CN113800747B - Municipal sludge coupling granulation system and use method thereof - Google Patents

Abstract

The invention relates to the technical field of sludge treatment, in particular to a municipal sludge coupling granulation system and a method for using the same; the invention comprises a screening component, a transfer component, a drying component and a granulating component arranged in sequence, and the screening component includes A vibrating screen, a cover plate arranged at the opening at the top of the vibrating screen, a sieve plate arranged inside the vibrating screen, and a shock absorbing assembly arranged on each support foot at the bottom of the vibrating screen, the cover plate is provided with a plate on the plate near the input end of the vibrating screen There is a feeding port, and the output end of the vibrating screen is respectively provided with an upper discharge pipe at the upper end of the sieve plate and a lower discharge pipe at the lower end of the sieve plate. The drying component and the low-temperature drying component, and the granulation component includes a stirring bin, a preheating bin, a roasting bin, a cooling bin and a cyclone which are arranged in sequence; the present invention can effectively solve the problems of poor environmental protection and poor granulation effect in the prior art. good and high maintenance costs.

Description

A municipal sludge coupling granulation system and using method thereof

technical field

The invention relates to the technical field of sludge treatment, in particular to a municipal sludge coupling granulation system and a method for using the same.

Background technique

The water content of sewage sludge is still as high as 70% to 80% after mechanical dehydration, and it is usually necessary to granulate and dry the sludge before incineration. The traditional sludge treatment method is to dry first and then hard granulate, that is, first use drying equipment to reduce the water content of the sludge, and then proceed to the next step of granulation. At present, the more common drying equipment is the rotary cylinder hot air dryer. The drying process is that the wet sludge is directly added from the higher end, and the heat carrier enters the cylinder from the lower end. With the rotation of the cylinder, the sludge is subjected to gravity The action travels to the lower end and gradually dries out by absorbing the heat of the heat carrier.

In the patent document with the application number: CN201720623695.8, a sludge granulation and drying system is disclosed, which includes a sludge storage bin, a hard foreign matter removal device, a granulator, a disc dryer, a waste gas heat recovery condensation system, a high pressure Electrostatic deodorization device, hydraulic semi-dry sludge silo and hot water tank, in which the sludge storage silo transports the sludge to the hard foreign matter removal device to separate the large particles of impurities in it, and the remaining sludge is directly transported to granulation The granulator is granulated, and the disc dryer is located below the granulator. The granulated sludge is output from the granulator and then transported to the disc dryer for drying; the granulator, the disc dryer and the waste gas The heat recovery condensing system forms an exhaust gas circulation system. The exhaust gas heat recovery condensing system is also connected to a high-voltage electrostatic deodorization device. The disc dryer is also connected to the hydraulic semi-dry sludge bin. connect. The utility model has high drying efficiency, can automatically sort foreign objects, and has a high degree of automation.

However, it still has the following shortcomings in the process of practical application:

First, the environmental protection is not good, because the sludge is usually rich in various harmful substances. If the sludge is not effectively disinfected before granulation, the finished sludge granules will be released to the outside world when they are actually used. Harmful substances, thereby polluting the environment and even endangering human health.

Second, the granulation effect is not good, because the drying efficiency of the device in the above-mentioned comparative documents is low when the sludge is dried, and the water content in the dried sludge is still high.

Third, the maintenance cost is high, because the wet sludge will adhere to the inner wall surface of the device, or even dry on the inner wall surface of the device, so the user needs to clean the inner wall surface of the device regularly.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the shortcomings existing in the prior art and to solve the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the present invention adopts the following technical scheme: a municipal sludge coupling granulation system, comprising a screening component, a transfer component, a drying component and a granulating component arranged in sequence;

The screening assembly includes a vibrating screen, a cover plate disposed at the top opening of the vibrating screen, a screen plate disposed inside the vibrating screen, and a shock absorbing assembly disposed on each support foot at the bottom of the vibrating screen, and the cover plate is close to the vibrating screen. A feeding port is opened on the plate surface at the input end, and the output end of the vibrating screen is respectively provided with an upper discharge pipe at the upper end of the sieve plate and a lower discharge pipe at the lower end of the sieve plate. The coefficient is adjustable;

The transfer assembly includes a receiving box and a first screw auger, the inlet at the top of the receiving box is detachably and sealed fixedly connected to the lower discharge pipe, and the outlet near the bottom of the receiving box is connected with the first feeding pipe through the first feeding pipe. The feeding port of the first screw auger is detachable and sealed fixed connection, the receiving box is also provided with a transmission component matched with the vibrating screen, and the first screw auger is also provided with a disinfection component;

The drying component includes an electro-osmosis drying component and a low-temperature drying component arranged in sequence;

The granulation assembly includes a stirring bin, a preheating bin, a roasting bin, a cooling bin and a cyclone which are arranged in sequence.

Further, a group of first pulse valves are provided on the side walls at both ends of the vibrating screen, and the first pulse valves at both ends of the vibrating screen are distributed in a staggered manner;

The side walls at both ends of the vibrating screen are also symmetrically provided with a set of limiting bodies, the limiting bodies are all provided with limiting holes whose central axis is perpendicular to the ground, and the limiting holes are pierced with matching limiters. Position rods, the bottoms of the limit rods are all fixed on the ground;

The shock absorbing assembly includes an upper mounting plate, a lower mounting plate and a shock absorbing cylinder, a group of shock absorbing cylinders in a parallel relationship are symmetrically arranged on the lower mounting plate, and each shock absorbing cylinder on the lower mounting plate A group of shock-absorbing cylinders with the same number are connected in series on the upper parts, and the shock-absorbing cylinders at the uppermost end are all fixedly connected with the upper mounting plate;

The transmission assembly includes a transmission rod, a buffer spring and a mounting seat, the top of the receiving box is fixedly connected to the bottom of the vibrating screen through a set of transmission rods, and a set of the bottom of the receiving box and the top of the mounting seat pass through. The shock-absorbing spring is connected, and the mounting seat is arranged and fixed on the ground.

Further, the upper cover and the lower cover of the shock absorber are connected by a bellows pipe, and the middle part of the upper end face of the lower cover is recessed inwardly with a column groove, and a column groove is fixed in the column groove. The supporting column matched with it, the middle part of the top surface of the supporting column is recessed inwardly with a telescopic groove, the bottom wall of the telescopic groove is recessed inwardly with a stroke groove, and the notch of the telescopic groove is in the The projection on the bottom wall of the travel groove is in the middle of the bottom wall of the travel groove, the size of the notch of the telescopic groove is smaller than the size of the bottom wall of the travel groove, the telescopic groove is slidably connected to the telescopic column matched with it, and the The top end is fixed in the middle of the lower end of the upper cylinder cover, the outer ends of the support column and the telescopic column are also provided with a shock-absorbing spring coaxial with them, and the two ends of the shock-absorbing spring are respectively fixed with the upper and lower cylinder covers. , both ends of the travel groove along the travel direction are provided with clamping blocks, the top of the clamping blocks are provided with grooves that match the telescopic columns, and the bottom of the clamping blocks are provided with first screws. and the thread directions inside the two first screw grooves are opposite, the lower cylinder cover and the support column both have shaft grooves that are coaxial and matched with the first screw grooves, and the adjusting rod is movably connected to the in the shaft groove, and the middle part of the adjusting rod is provided with threads which are respectively matched with the two first screw grooves;

The inside of the receiving box is in the shape of a slope with a low output end and a high input end.

Further, the end of the adjusting rod at the outer end of the shock-absorbing cylinder is provided with a hand wheel, and the lower end cover and the side wall of the support column are also provided with a rod slot that is coaxial and conducts the stroke groove. A display rod made of piezochromic material is arranged in the groove, and the rod body of the display rod inside the stroke groove is pressed by two clamping blocks inside the stroke groove.

Further, the sterilization assembly includes an air storage cylinder, an air guide tube arranged on the air storage cylinder and a first solenoid valve arranged on the air guide tube, and the other end of the air guide tube is arranged at the input end of the first spiral auger. on the tube body.

Further, the electro-osmotic drying assembly includes a drying box, an anode plate, a cathode plate and an electro-hydraulic rod, the cathode plate is horizontally and fixedly arranged inside the drying box, and the anode plate is horizontally movably arranged in the drying box. Inside, and the anode plate is driven by a group of electro-hydraulic rods symmetrically arranged on the inner top wall of the drying box, the input end of the drying box and the output end of the first screw auger are detachable and sealed through the second feeding pipe. connection, the second feeding pipe is provided with a second solenoid valve, the output end of the drying box is provided with a third feeding pipe, when the electro-hydraulic rod is fully retracted, the nozzle of the output end of the second feeding pipe is at It is located between the anode plate and the cathode plate in the vertical direction, the inner tube wall of the lower end of the third feeding tube is flush with the plate surface of the cathode plate, and the drying box is provided with a filter on the side walls on both sides of the feeding direction. The filter plate is densely covered with filter holes of micron level or below, the outer side wall of the drying box is also provided with a first sealing cover matched with the filter plate, the upper and lower ends of the first sealing cover are There are exhaust pipes and drain pipes respectively;

The low-temperature drying assembly includes a second auger, a third auger, a condenser, an evaporator, a cooling unit and a compressor, and the second and third augers are inclined relative to the ground. The input end of the upper end of the second auger is detachable and sealed fixed connection with the third feeding pipe, the output end of the lower end of the second auger and the input end of the lower end of the third auger pass through the fourth auger. The feeding pipe is detachably and sealedly connected, the output end of the upper end of the third spiral auger and the third feeding pipe are detachably and sealedly connected through a fifth feeding pipe, and the fifth feeding pipe is provided with a third feeding pipe. Solenoid valve, the output end of the condenser is provided with a hot air output pipe, the end of the hot air output pipe is branched with two branch pipes, and the two branch pipes at the end of the hot air output pipe are respectively arranged at the output end of the second spiral auger , the output end of the third spiral auger, the input end of the evaporator is provided with a cold air recovery pipe, the end of the cold air recovery pipe is branched with two branch pipes, and the two branch pipes at the end of the cold air recovery pipe are respectively arranged in The input end of the second auger, the input end of the third auger, a cold air pipe is arranged between the output end of the evaporator and the input end of the compressor, the input end of the condenser and the output end of the compressor There is a hot gas pipe between them, and the hot gas pipe is also branched with a cooling pipe and a heating pipe. A heat exchange pipe is also arranged between the output end and the output end of the evaporator, and a drain pipe is also arranged at the output end of the evaporator;

The fourth feeding pipe and the fifth feeding pipe are both provided with grid plates;

One-way valves are arranged on the heat exchange tubes, cooling tubes and heating tubes.

Further, a discharge assembly and a cleaning assembly are also provided on one side of the input end of the drying box;

The unloading assembly includes a push plate, a first screw and a drive motor. The box body on one side of the input end of the drying box is provided with a through slot matched with the cathode plate, and the slot at the outer end of the through slot is sealed and fixed. There is a second sealing cover, the push plate is movably arranged inside the second sealing cover, the first screw is screwed into the second screw groove on the push plate, and the outer end of the first screw passes through the second sealing cover The cover is connected to the drive motor at the outer end of the second sealing cover, the length and width of the push plate surface are larger than the length and width of the cathode plate surface, and the lower end plate surface of the push plate is connected to the upper end plate surface of the cathode plate. coplanar;

The cleaning assembly includes a water storage tank, an air filter, a delivery pump and a second pulse valve, and a set of second pulse valves are symmetrically arranged on the box body on one side of the input end of the drying box. The conveying pipe is connected with the output end of the conveying pump, the input end of the conveying pump is provided with a three-way pipe, the two branch pipes of the three-way pipe are respectively connected with the water storage tank and the air filter, and the two The branch pipes are all provided with fourth solenoid valves.

Further, the third feeding pipe is also provided with a valve assembly and a blanking assembly;

The valve assembly includes a guide rail plate, a second screw, a rotating motor and a baffle plate, two guide rail plates are symmetrically arranged on the outer wall of one side of the output end of the drying box, and the guide rail rods are rotatably connected to the vertical ground. The second screw, the second screw is driven and rotated by the corresponding rotating motor, the baffles are provided with protruding bodies at both ends, and the protruding bodies are screwed with the corresponding screw rods, and the baffles pass through the baffles. Connected to the plate groove at the upper end of the third feeding tube, when the protruding body is in contact with the lower end of the guide rail plate, the baffle completely blocks the third feeding tube, and when the protruding body is in contact with the upper end of the guide rail plate When the third feeding pipe is completely connected and the plate body at the lower end of the baffle plate is still in the plate groove;

The unloading assembly includes a transverse arm arranged inside the tube body at the end of the third feeding pipe, an auger shaft rotatably connected to the transverse arm, and a servo motor arranged on the outer wall of the third feeding pipe, and the central axis of the auger shaft is vertical. On the ground and the conveying direction is downward, the outer wall of one end of the third feeding pipe is also provided with a first rectangular groove, and the transverse arm is also provided with a second rectangular groove in communication with the first rectangular groove. A driven gear is provided at the middle end of the dragon shaft in the second rectangular groove, and the driven gear is connected with the driving gear on the output shaft of the servo motor through a chain synchronous transmission.

Further, the top of the stirring bin is detachably and sealedly connected to the output end of the third spiral auger through the sixth feeding pipe, and the sixth feeding pipe is provided with a fifth solenoid valve, and the stirring The top of the silo is also provided with a feeding pipe, the outer and inner side walls of the stirring silo are respectively provided with a first ring body and a second ring body at the same height, and a group of electromagnets are symmetrically embedded on the first ring body. , a star-shaped bracket is connected coaxially on the second ring body, and the middle part of the lower end of the star-shaped bracket is provided with a stirring shaft coaxial with it, and blades are evenly distributed on the stirring shaft. A group of iron blocks are embedded symmetrically inside the star-shaped bracket and the second ring body; the stirring bin, the first ring body, the second ring body, the star-shaped bracket, the stirring shaft and the blades are all made of non-magnetic metal materials , the bottom of the stirring bin is also provided with a seventh feeding pipe, and the seventh feeding pipe is provided with a sixth solenoid valve.

A method for using a municipal sludge coupling granulation system, comprising the following steps:

In step (1), the user calculates the damping coefficient (that is, the equivalent stiffness coefficient of the equivalent spring) required by the shock absorber component according to the knowledge of the series and parallel of the springs, and then the user adjusts the corresponding adjustment rod, so that each damping The damping coefficients of the shock components are all equal to the required damping coefficients. During this process, the user judges whether the telescopic column inside the corresponding shock absorber is fixed by observing the color of the display rod, and removes the sludge from the cover plate. The material port is poured into the vibrating screen to sieve the sludge and the solid impurities mixed in it. During this process, the first pulse valve will continuously spray a pulsed water flow to wash away the sludge on the inner wall of the vibrating screen. ;

In step (2), the sludge screened by the vibrating screen is discharged into the receiving box, and the receiving box is kept vibrating synchronously with the vibrating screen through the transmission assembly, so as to facilitate the discharge of the sludge inside the first spiral auger;

In step (3), the first screw auger sends the sludge into the drying box through the second feeding pipe. During this process, the first solenoid valve on the air guide pipe is opened and the sterilizing gas in the gas storage cylinder is evenly fed into the first In a spiral auger, so that the sludge in the first spiral auger is sterilized;

Step (4), first connect the anode plate and the cathode plate to the anode and cathode ends of the DC voltage stabilizer, and then the anode plate in the drying box squeezes the sludge on the cathode plate under the drive of the electro-hydraulic rod. and electrification, so that the sludge is dehydrated under the action of electroosmosis;

Step (5), in the above step (4), the sewage and waste gas discharged from the sludge under the dual action of electro-osmosis and extrusion are respectively discharged to the designated recovery and treatment device through the drain pipe and the exhaust pipe;

Step (6), immediately after the above step (4), when the sludge in the drying box is dehydrated, the valve assembly on the third feeding pipe is opened, and the push plate will dehydrate the sludge under the cooperation of the driving motor and the screw. Push in the third feeding pipe. During this process, the second pulse valve will continuously spray clean pulsed airflow into the drying box under the drive of the transfer pump, so as to remove the sludge blocks attached to the anode and cathode plates. Blow off, and then the push plate is completely received into the second sealing cover under the cooperation of the driving motor and the screw, and then the valve assembly is closed, and then the second pulse valve is driven by the transfer pump to continuously spray clean pulse water flow inside the drying box, Thereby cleaning the surface of the anode plate and the cathode plate;

Step (7), the servo motor drives the auger shaft to rotate to send the sludge in the third feeding pipe into the second screw auger;

In step (8), the second auger and the third auger are activated, so that the sludge is circulated in the second auger and the third auger. During this process, the fifth solenoid valve on the sixth feeding pipe In the closed state, and during this process, the third solenoid valve on the fifth feed pipe is open, and during this process, the condenser, evaporator, cooling unit and compressor are all activated, allowing the condenser to operate against the pollution. The moving direction of the mud conveys dry high-temperature hot air, and then the moisture-saturated low-temperature hot air is recycled to the evaporator, and then the evaporator dries the moisture-saturated low-temperature hot air and inputs it to the compressor, and the compressor outputs the dry high-temperature hot air to the condenser. ;

Step (9), in the above step (8), the water dried by the evaporator from the water-saturated low-temperature hot air is discharged to the designated recovery and treatment device through the drain pipe, and the cooling unit is used for the heat dissipation of the compressor;

Step (10), when the sludge is dried in the low temperature drying assembly, the fifth solenoid valve on the sixth feeding pipe is opened, and the third solenoid valve on the fifth feeding pipe is closed, so that the dried sludge is passed through the first feeding pipe. Six feeding pipes are discharged into the mixing bin;

In step (11), the user injects the additive into the stirring bin through the feeding pipe, and then starts the electromagnets on the first ring body in turn to drive the stirring shaft to rotate, so as to mix the sludge and the additive in the stirring bin evenly. After completion, let the sludge age in the mixing bin;

In step (12), the sixth solenoid valve on the seventh feeding pipe is opened, so that the aged sludge enters the preheating chamber for drying and preheating. It is worth noting that the aged sludge will be stored in the preheating chamber. Sludge balls that are squeezed one by one;

In step (13), the preheated sludge roasting bin is roasted at high temperature, so that the sludge balls become ceramic balls;

Step (14), sending the calcined ceramic balls into a cooling bin for cooling;

In step (15), the cooled ceramic balls are sent to a cyclone for separation, so as to obtain non-toxic ceramic balls and ceramic sand of a specified size.

Compared with the prior art, the advantages and positive effects of the present invention are,

1. In the present invention, a drying assembly of a transfer assembly is added, wherein the transfer assembly includes a receiving box and a first screw auger, the inlet at the top of the receiving box is connected with the lower discharge pipe, and the outlet of the receiving box near the bottom passes through the first feeding pipe It is connected with the feeding port of the first screw auger, the receiving box is also provided with a transmission component matched with the vibrating screen, the first screw auger is also provided with a disinfection component, and the drying component includes an electro-osmosis drying component and a low temperature drying component arranged in sequence. The drying assembly, the sterilizing assembly includes an air storage cylinder, an air guide tube arranged on the air storage cylinder and a first solenoid valve arranged on the air guide tube, the other end of the air guide tube is arranged on the pipe body at the input end of the first spiral auger, and the electric The osmotic drying assembly includes a drying box, an anode plate, a cathode plate and an electro-hydraulic rod. The cathode plate is fixedly arranged inside the drying box horizontally, the anode plate is movably arranged horizontally inside the drying box, and the anode plate is symmetrically arranged in the drying box. Driven by a set of electro-hydraulic rods on the inner top wall, the input end of the drying box and the output end of the first screw auger are detachably and sealedly connected through a second feeding pipe, which is provided with a second solenoid valve to dry The output end of the box is provided with a third feeding pipe. The drying box is provided with filter plates on both sides of the drying box in the feeding direction. The filter plates are densely covered with filter holes of micron level or below. There is a first sealing cover matched with the filter plate, and the upper and lower ends of the first sealing cover are respectively provided with an exhaust pipe and a drainage pipe.

In this way, when the sludge is transported in the first auger, the gas storage cylinder will evenly release the pre-existing sterilizing gas into the first auger, and due to the working characteristics of the first auger, the sludge will There is also a certain turning movement in the screw auger, so that the sludge and the disinfection gas can be fully mixed, and the work of the first screw auger can also effectively prevent the disinfection gas from escaping from the first feeding pipe to the receiving box and the vibrating screen. , which improves the safety of users; the sludge then enters the drying box from the first auger for electro-osmotic dehydration treatment, during which the current on the anode and cathode plates flows through the sludge and achieves ohmic heating In addition, the "electroporation" effect can also be produced during the ohmic heating process, which will lead to the rupture of the cell membrane of the microorganism, the leakage of the cell contents and the cell death, thereby causing the cell death; in the present invention, by using The three methods of disinfection gas, ohmic heating and electroporation effect are deeply coupled, so as to achieve full disinfection and sterilization of sludge, and ensure that the produced sludge balls are clean and non-toxic. The effect of effectively improving the environmental protection in practical application of the present invention is achieved.

2. In the present invention, by adding a drying component and a granulating component, the drying component includes an electro-osmosis drying component and a low-temperature drying component arranged in sequence, and the electro-osmotic drying component includes a drying box, an anode plate, a cathode plate and an electro-hydraulic rod, and the low-temperature drying component. It includes the second auger, the third auger, condenser, evaporator, cooling unit and compressor, and the granulation assembly includes a stirring chamber, a preheating chamber, a roasting chamber, a cooling chamber and a cyclone which are arranged in sequence. .

In this way, the sludge can be subjected to primary dehydration and drying through the electro-osmosis drying component, and then the sludge can be subjected to secondary dehydration and drying through the low-temperature drying component, so as to obtain the sludge with low water content (less than or equal to 10%~50% adjustable); then The dried sludge is stirred, mixed and aged with additives in the stirring bin, then granulated and preheated in the preheating bin, then fired in the roasting bin, and then fired into the shaped ceramic balls in the cooling bin. After cooling, the ceramic balls and the ceramic sand are separated by a cyclone. The effect of effectively improving the granulation ability of the present invention is achieved.

3. In the present invention, a first pulse valve and a second pulse valve are respectively provided on the vibrating screen and the drying box, and the second pulse valve is connected with the output end of the transfer pump through a conveying pipe, and the input end of the conveying pump is provided with a three-way pipe , the two branches of the three-way pipe are respectively connected to the water storage tank and the air filter, and the two branches of the three-way pipe are provided with a fourth solenoid valve, and the receiving box is designed to keep vibrating synchronously with the vibrating screen through the transmission assembly.

In this way, the pulsed water flow can be continuously sprayed through the first pulse valve, so as to wash away the sludge on the inner wall of the vibrating screen; the receiving box can keep vibrating through the transmission component (at the same time, it cooperates with the water flow discharged from the vibrating screen), so that the sludge cannot adhere to the vibrating screen. In the process of discharging the sludge out of the drying box by the unloading assembly, the second pulse valve will continuously spray clean pulsed airflow into the drying box under the drive of the conveying pump, so as to adhere to the anode plate and the inside of the drying box. The sludge block on the cathode plate is blown off, and when the sludge in the drying box is completely discharged, that is, the valve assembly is closed, the second pulse valve continuously sprays clean pulsed water flow inside the drying box under the drive of the transfer pump, so as to prevent the anode The plate surface of the plate and the cathode plate are cleaned. The effect of effectively reducing the maintenance cost of the product of the present invention is achieved.

Description of drawings

Fig. 1 is the direct view under the first angle of view of the present invention;

Fig. 2 is the direct view of the screening assembly under the second angle of view of the present invention;

3 is an exploded view of the damping assembly from a third perspective of the present invention;

FIG. 4 is an exploded view of the shock-absorbing cylinder from a fourth angle of view of the present invention;

5 is an intuitive view of the support column and the lower cylinder cover when the support column and the lower cylinder cover are separated from the clamping block and the adjusting rod after the first partial cross-sectional view of the present invention;

Fig. 6 is the intuitive view of the support column and the lower cylinder cover after the second partial cross-section from the sixth perspective of the present invention;

FIG. 7 is an intuitive view of the transport assembly from a seventh perspective of the present invention;

FIG. 8 is an intuitive view of the receiving box after a partial cross-section under the eighth angle of view of the present invention;

9 is a direct view of the electroosmotic drying assembly from a ninth perspective of the present invention;

10 is a partial exploded view of the electroosmotic drying assembly from a tenth perspective of the present invention;

11 is an intuitive view of the drying box after being partially cut away from the unloading assembly from an eleventh angle of view of the present invention;

Fig. 12 is an intuitive view of the third feeding pipe when it is separated from the valve assembly after being partially cut away from the twelfth perspective of the present invention;

13 is an intuitive view of the blanking assembly after the cross arm is partially cut away from the thirteenth perspective of the present invention;

FIG. 14 is a direct view of the low-temperature drying assembly from the fourteenth angle of view of the present invention;

Fig. 15 is an intuitive view of the fourth feeding pipe after a partial cross-section from the fifteenth angle of view of the present invention;

Figure 16 is an intuitive view of the stirring bin after a partial cross-section from the sixteenth perspective of the present invention;

17 is an intuitive view of the star-shaped bracket after being partially cut away from the seventeenth angle of view of the present invention;

Fig. 18 is an enlarged view of A region in Fig. 2;

Figure 19 is an enlarged view of region B in Figure 10;

Figure 20 is an enlarged view of the C region in Figure 12;

Figure 21 is an enlarged view of the D region in Figure 12;

The symbols in the figure represent: 1-vibrating screen; 2-cover plate; 3-sieve plate; 4-feed port; 5-upper discharge pipe; 6-lower discharge pipe; A screw auger; 9- the first feeding pipe; 10- agitating bin; 11- preheating bin; 12- roasting bin; 13- cooling bin; 14- cyclone separator; 15- first pulse valve; 16- limit body; 17-limiting hole; 18-limiting rod; 19-upper mounting plate; 20-lower mounting plate; 21-damping cylinder; 22-transmission rod; 23-cushioning spring; 24-mounting seat; 25- Upper cylinder cover; 26-lower cylinder cover; 27-bellows; 28-column groove; 29-support column; 30-expansion groove; 31-stroke groove; 32-expandable column; 33-shock spring; 34-clamping Block; 35-groove; 36-first screw groove; 37-shaft groove; 38-adjusting rod; 39-handwheel; 40-rod groove; 41-display rod; -First solenoid valve; 45-Drying box; 46-Anode plate; 47-Cathode plate; 48-Electro-hydraulic rod; 49-Second feeding pipe; 50-Second solenoid valve; 51-Third feeding pipe; 52- filter plate; 53-filter hole; 54-first sealing cover; 55-exhaust pipe; 56-drain pipe; 57-second spiral auger; 58-third spiral auger; 59-condenser; 60-evaporation 61-cooling unit; 62-grid plate; 63-compressor; 64-fourth feeding pipe; 65-fifth feeding pipe; 66-third solenoid valve; 67-hot air output pipe; 68-cold air recovery pipe; 69-cold air pipe; 70-hot air pipe; 71-cooling pipe; 72-heating pipe; 73-heat exchange pipe; 74-discharge pipe; 75-check valve; 76-push plate; 77-first screw; 78 -Drive motor; 79-Second sealing cover; 80-Second screw groove; 81-Water storage tank; 82-Air filter; 83-Transport pump; 84-Second pulse valve; Pipe; 87- Fourth solenoid valve; 88- Guide rail plate; 89- Second screw; 90- Rotary motor; 91- Baffle plate; 92- Protruding body; 93- Plate groove; Shaft; 96-servo motor; 97-first rectangular slot; 98-second rectangular slot; 99-driven gear; 100-drive gear; 101-chain; 102-sixth feeding pipe; 103-fifth solenoid valve; 104-feeding pipe; 105-first ring body; 106-second ring body; 107-electromagnet; 108-star bracket; 109-stirring shaft; 110-blade; 111-iron block; ; 113-sixth solenoid valve.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments may be combined with each other in the case of no conflict.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention, however, the present invention may also be implemented in other ways than those described herein, and therefore, the present invention is not limited to the specific embodiments disclosed in the following description. limit.

A municipal sludge coupled granulation system in this embodiment, referring to Figures 1-21, includes a screening component, a transfer component, a drying component and a granulation component arranged in sequence.

The screening assembly includes a vibrating screen 1, a cover plate 2 arranged at the top opening of the vibrating screen 1, a sieve plate 3 arranged inside the vibrating screen 1, and a shock absorbing assembly arranged on each support foot at the bottom of the vibrating screen 1. The cover plate 2 A feeding port 4 is opened on the plate surface near the input end of the vibrating screen 1, and the output end of the vibrating screen 1 is respectively provided with an upper discharge pipe 5 at the upper end of the sieve plate 3 and a lower discharge pipe 6 at the lower end of the sieve plate 3. (In this way, the large solid impurities in the sludge can be screened out through the vibrating screen 1 and discharged from the upper discharge pipe 5), and the damping coefficient of the shock absorption component is adjustable.

This is because when the vibrating screen 1 screens the sludge, the user needs to select the appropriate working mode according to the properties of the sludge (water content, impurities, sludge type, etc.), so as to improve the efficiency of the screening work, but the vibrating screen 1 The vibration amplitude of its body will be different under different working modes, so a shock absorption component is needed to satisfy the vibration screen 1 with the best shock absorption effect in different working modes (the existing vibration screen 1 adopts the The stiffness coefficient of the damping spring 33 is fixed, that is, the damping coefficient is fixed).

The side walls at both ends of the vibrating screen 1 are provided with a set of first pulse valves 15 (for the convenience of description in this embodiment, the number of the first pulse valves 15 is 17), and the first pulse valves at both ends of the vibrating screen 1 15 are distributed in a staggered manner, which can ensure that the injection area of the first pulse valve 15 has an effective full coverage effect on the inner wall of the vibrating screen 1 .

The side walls at both ends of the vibrating screen 1 are also symmetrically provided with a set of limiting bodies 16 , the limiting bodies 16 are all provided with limiting holes 17 whose central axis is perpendicular to the ground, and the limiting holes 17 are all pierced with matching limiting holes 17 . The bottom of the rod 18 and the limit rod 18 are fixed on the ground; this can ensure that the vibrating screen 1 can only vibrate in the vertical direction, but cannot vibrate in the horizontal direction, thereby improving the stability of the vibrating screen 1 when working.

The damping assembly includes an upper mounting plate 19, a lower mounting plate 20 and a damping cylinder 21. In this embodiment, for the convenience of description, two sets of damping cylinders 21 in parallel relationship are symmetrically arranged on the lower mounting plate 20, and Each damping cylinder 21 on the lower mounting plate 20 is connected in series with two damping cylinders 21 of the same number, and the damping cylinders 21 at the uppermost end are all fixedly connected to the upper mounting plate 19 .

The upper cylinder cover 25 and the lower cylinder cover 26 of the shock-absorbing cylinder 21 are connected by a bellows 27, and a column groove 28 is recessed inwardly in the middle of the upper end surface of the lower cylinder cover 26, and a matching column groove 28 is fixed in the column groove 28. The support column 29, the middle part of the top surface of the support column 29 is recessed inwardly with a telescopic groove 30, the bottom wall of the telescopic groove 30 is recessed inwardly with a stroke groove 31, and the notch of the telescopic groove 30 is in the stroke groove 31. The projection on the bottom wall is in the middle of the bottom wall of the travel groove 31, the size of the notch of the telescopic groove 30 is smaller than that of the bottom wall of the travel groove 31, the telescopic column 32 is slidably connected to the telescopic groove 30, and the top of the telescopic column 32 is fixed In the middle of the lower end of the upper cylinder cover 25, the outer ends of the support column 29 and the telescopic column 32 are also provided with a shock-absorbing spring 33 coaxial with them. Fixing, both ends of the stroke groove 31 along the stroke direction are provided with clamping blocks 34, the top of the clamping blocks 34 is provided with grooves 35 that match the telescopic column 32, and the bottom of the clamping blocks 34 is provided with a first The screw grooves 36, and the thread directions inside the two first screw grooves 36 are opposite, the lower cylinder cover 26 and the support column 29 both have shaft grooves 37 that are coaxial and matched with the first screw grooves 36. It is connected to the shaft groove 37 , and the middle part of the adjusting rod 38 is provided with threads which are respectively matched with the two first screw grooves 36 .

The physical knowledge about series and parallel of springs is applied here: when two springs are connected in series, the equivalent stiffness coefficient of the equivalent spring formed in series is equal to the product of the respective stiffness coefficients of the two springs divided by the respective stiffness coefficients of the two springs. The quotient of the sum of the stiffness coefficients; when two springs are connected in parallel, the equivalent stiffness coefficient of the parallel equivalent spring is equal to the sum of the respective stiffness coefficients of the two springs.

It is worth noting that, in the present invention, the number of shock-absorbing springs 33 in each shock-absorbing cylinder 21 in the shock-absorbing assembly may be the same or different, but in actual production, the shock-absorbing cylinder 21 must be damped The stiffness coefficient of the spring 33 is clearly marked on the surface of the damping cylinder 21 .

The end of the adjusting rod 38 at the outer end of the shock-absorbing cylinder 21 is provided with a hand wheel 39, so that the user can rotate the corresponding adjusting rod 38 through the hand-wheel 39, so that the corresponding shock-absorbing cylinder 21 can be withdrawn from the shock-absorbing work, that is, the The damping cylinder 21 cannot expand and contract, that is, the damping spring 33 inside the damping cylinder 21 cannot expand and contract.

The lower end cover and the side wall of the support column 29 are also provided with rod grooves 41 that are coaxial and conduct the stroke groove 31. The rod groove 41 is provided with a display rod 41 made of piezochromic material, and the display rod 41 is in the stroke groove 31. The inner rod body is squeezed by the two clamping blocks 34 inside the stroke groove 31 , so that the user can judge whether the clamping blocks 34 clamp and fix the corresponding telescopic column 32 by displaying the color of the rod 41 .

In this embodiment, the discoloration rule of the display rod 41 is: as the pressure increases, the color of the display rod 41 deepens.

The transfer assembly includes a receiving box 7 and a first screw auger 8. The inlet at the top of the receiving box 7 and the lower discharge pipe 6 are detachably and sealed fixedly connected, and the outlet of the receiving box 7 near the bottom is connected to the first feeding pipe 9 through the The feeding port 4 of the first screw auger 8 is detachably and sealed in a fixed connection, the receiving box 7 is also provided with a transmission component matched with the vibrating screen 1, and the first screw auger 8 is also provided with a disinfection component.

The transmission assembly includes a transmission rod 22, a buffer spring 23 and a mounting seat 24. The top of the receiving box 7 is fixedly connected to the bottom of the vibrating screen 1 through a set of transmission rods 22, and the bottom of the receiving box 7 and the top of the mounting seat 24 pass through. A set of buffer springs 23 are connected, and the mounting seat 24 is arranged and fixed on the ground; the interior of the receiving box 7 is in the shape of a slope with a low output end and a high input end.

In this way, the receiving box 7 and the vibrating screen 1 can be kept vibrating synchronously through the transmission assembly, so that the sludge in the receiving box 7 can be easily discharged into the first screw auger 8 .

The sterilization assembly includes an air storage cylinder 42, an air guide tube 43 arranged on the air storage cylinder 42 and a first solenoid valve 44 arranged on the air guide tube 43. The other end of the air guide tube 43 is set at the input end of the first spiral auger 8. body.

Among them, the gas storage cylinder 42 is pre-stored with a sterilizing gas, so that when the sludge is transported in the first screw auger 8, the gas storage cylinder 42 will release the disinfection gas evenly to the inside of the first screw auger 8, so that the sludge can be preliminarily disinfect.

The drying assembly includes an electro-osmosis drying assembly and a low-temperature drying assembly arranged in sequence.

Because the sludge has a high water content when it is discharged from the transfer component, if the traditional heating and drying method is directly used, it will not only cause the process to take a long time, but also cause negative effects such as high energy consumption.

Among them, the electro-osmosis dehydration and drying technology organically combines the solid-liquid separation technology and the physical and chemical treatment technology of the electrochemical properties of the sludge itself, and uses "electricity" for dehydration. It has many characteristics that many dewatering treatment technologies do not have. It can reduce the moisture content of activated excess sludge to below 60%, which is difficult to achieve by other mechanical dewatering methods. The dewatering effect of biochemical sludge is particularly obvious. In addition, the electro-osmotic dehydration and drying technology has the advantages of high dehydration efficiency, large system operation flexibility, many subsequent resource disposal methods for dewatered cement cake, and low operating cost (electro-osmotic dehydration uses "electricity" in the dehydration process, but due to dehydration. Good efficiency, high comprehensive economic benefits of sludge disposal. Only 70 to 80 kWh is consumed per ton of sludge dewatering (80% moisture content is reduced to 55%), the useless power consumption generated by electrolytic heat is less than 1%, and the amount of flushing water is less than 1t /h, the compressed air volume is 0.2m3/h, which greatly saves energy.), good independence, safety and environmental protection and so on.

Among them, the low-temperature drying technology is to granulate or cool the sludge with a moisture content below 85%, and then blow dry hot air (temperature 75°C) against the direction of the sludge movement at the end of the sludge transfer. After the water absorbs heat, it is continuously vaporized, and a large amount of saturated water vapor is generated and brought to the starting point of sludge transfer. The water vapor is collected and discharged by condensation and dehumidification; at this time, the water vapor with lower saturation is heated to 75°C through the condenser 59, and becomes dry and high-temperature hot air, and the end point of sludge transmission is moved against the sludge. The dry hot air is blown in the direction to enter the periodic cycle, so as to achieve the purpose of sludge drying and dehydration (the final water content in the sludge is 10%~50%, and the specific water content can be adjusted). This method has the advantages of high energy efficiency (4.2 kg of water can be removed per kWh of electricity), no waste gas and waste water discharge during the sludge drying process, safety, high efficiency and stability of automatic dust removal.

The electroosmotic drying assembly includes a drying box 45, an anode plate 46, a cathode plate 47 and an electro-hydraulic rod 48. The cathode plate 47 is horizontally fixed inside the drying box 45, and the anode plate 46 is horizontally movably arranged inside the drying box 45. And the anode plate 46 is driven by three electro-hydraulic rods 48 symmetrically arranged on the inner top wall of the drying box 45. The input end of the drying box 45 and the output end of the first screw auger 8 are detachable and sealed through the second feeding pipe 49. The second feeding pipe 49 is provided with a second solenoid valve 50, and the output end of the drying box 45 is provided with a third feeding pipe 51. When the electro-hydraulic rod 48 is fully retracted, the nozzle of the output end of the second feeding pipe 49 is in the vertical direction. The upper part is located between the anode plate 46 and the cathode plate 47, the inner wall of the lower end of the third feeding pipe 51 is flush with the plate surface of the cathode plate 47, and the drying box 45 is provided with filter plates on the side walls on both sides in the feeding direction. 52, the filter plate 52 is densely covered with micron-level filter holes 53, and the outer side wall of the drying box 45 is also provided with a first sealing cover 54 that cooperates with the filter plate 52, and the upper and lower ends of the first sealing cover 54 are respectively provided with There are exhaust pipes 55 and drain pipes 56 .

In this way, the sludge in the drying box 45 can be dehydrated and dried through the cooperation of the cathode plate 47 and the anode plate 46, and at the same time, with the cooperation of the electro-hydraulic rod 48, the anode plate 46 and the cathode plate 47 can also dehydrate the sludge in the drying box 45. The mud is dewatered by mechanical extrusion; thus, the dewatering capacity of the drying box 45 is further improved.

It is worth noting that: the input end side of the drying box 45 is also provided with a discharging component and a cleaning component; the third feeding pipe 51 is also provided with a valve component and a discharging component.

The unloading assembly includes a push plate 76, a first screw 77 and a drive motor 78. The box body on one side of the input end of the drying box 45 is provided with a through groove that cooperates with the cathode plate 47, and the groove at the outer end of the through groove is sealed and fixed with The second sealing cover 79, the push plate 76 is movably arranged inside the second sealing cover 79, the first screw 77 is screwed into the second screw groove 80 on the push plate 76, and the outer end of the first screw 77 passes through the second sealing cover The cover 79 is connected to the drive motor 78 at the outer end of the second sealing cover 79. The length and width of the plate surface of the push plate 76 are both greater than the length and width of the plate surface of the cathode plate 47, and the lower end plate surface of the push plate 76 is in contact with the cathode plate 47. The upper plate surface is coplanar.

In this way, when the sludge in the drying box 45 is dehydrated and dried, the driving motor 78 pushes the sludge in the drying box 45 into the third feeding pipe 51 through the screw driving the push plate 76, and is discharged into the second feeding pipe 51 through the third feeding pipe 51. Spiral auger 57 (at this time, the valve assembly on the third feeding pipe 51 is in an open state).

The cleaning assembly includes a water storage tank 81, an air filter 82, a delivery pump 83 and a second pulse valve 84. A set of second pulse valves 84 are symmetrically arranged on the box body on the input side of the drying box 45. The second pulse valve 84 The delivery pipe 85 is connected to the output end of the delivery pump 83, the input end of the delivery pump 83 is provided with a tee pipe 86, and the two branch pipes of the tee pipe 86 are respectively connected to the water storage tank 81 and the air filter 82, and the tee pipe 86 A fourth solenoid valve 87 is provided on both of the branch pipes.

In this way, when the push plate 76 pushes out the sludge in the drying box 45, the second pulse valve 84 will continuously spray clean pulsed airflow into the drying box 45 under the driving of the conveying pump 83, so as to remove the sludge in the drying box 45. The sludge blocks on the anode plate 46 and the cathode plate 47 are blown off, so that these sludge blocks also enter the third feeding pipe 51, when the push plate 76 is fully retracted into the second sealing cover 79, the valve assembly is closed, and then the second Driven by the delivery pump 83 , the pulse valve 84 continuously sprays clean pulsed water flow from the inside of the drying box 45 , so as to clean the surfaces of the anode plate 46 and the cathode plate 47 .

The valve assembly includes a guide rail plate 88, a second screw 89, a rotary motor 90 and a baffle plate 91. Two guide rail plates 88 are symmetrically arranged on the outer wall on one side of the output end of the drying box 45. The second screw 89, the second screw 89 is driven and rotated by the corresponding rotating motor 90, the baffle 91 is provided with protruding bodies 92 at both ends, the protruding bodies 92 are screwed with the corresponding screw rods, and the baffle 91 is threaded through In the plate groove 93 at the upper end of the third feeding tube 51, when the protruding body 92 is in contact with the lower end of the guide rail plate 88, the baffle 91 completely blocks the third feeding tube 51. When in contact, the third feeding pipe 51 is completely connected and the plate body at the lower end of the baffle plate 91 is still in the plate groove 93 .

The blanking assembly includes a transverse arm 94 arranged inside the pipe body at the end of the third feeding pipe 51, a auger shaft 95 rotatably connected to the transverse arm 94, and a servo motor 96 arranged on the outer wall of the third feeding pipe 51, and the auger shaft 95 The central axis is perpendicular to the ground and the conveying direction is downward. The outer wall of one end of the third feeding pipe 51 is also provided with a first rectangular groove 97 , and the transverse arm 94 is also provided with a second rectangular groove 98 that communicates with the first rectangular groove 97 . The end of the auger shaft 95 in the second rectangular groove 98 is provided with a driven gear 99 .

In this way, the servo motor 96 can drive the auger shaft 95 to rotate through the chain 101 , so as to discharge all the sludge in the third feeding pipe 51 into the second auger 57 .

The low-temperature drying assembly includes a second screw auger 57, a third screw auger 58, a condenser 59, an evaporator 60, a cooling unit 61 and a compressor 63. Both the second screw auger 57 and the third screw auger 58 are opposite to the ground. In an inclined shape, the input end of the upper end of the second screw auger 57 is detachably connected to the third feeding pipe 51 in a sealed and fixed connection, and the output end of the lower end of the second screw auger 57 and the input end of the lower end of the third screw auger 58 are connected. The fourth feeding pipe 64 is detachably and sealingly connected, and the output end of the upper end of the third spiral auger 58 and the third feeding pipe 51 are detachably and sealingly connected by the fifth feeding pipe 65, and the fifth feeding pipe 65 There is a third solenoid valve 66 on it, a hot air output pipe 67 is provided at the output end of the condenser 59, and two branch pipes are branched at the end of the hot air output pipe 67, and the two branch pipes at the end of the hot air output pipe 67 are respectively arranged in the second spiral stranded pipe. The output end of the dragon 57, the output end of the third spiral auger 58, and the input end of the evaporator 60 are provided with a cold air recovery pipe 68. The branch pipes are respectively arranged at the input end of the second spiral auger 57 and the input end of the third spiral auger 58. A cold air pipe 69 is arranged between the output end of the evaporator 60 and the input end of the compressor 63, and the input end of the condenser 59 is provided. A hot air pipe 70 is provided between the output end of the compressor 63, and the hot air pipe 70 is also branched with a cooling pipe 71 and a heating pipe 72. The other ends of the cooling pipe 71 and the heating pipe 72 are respectively arranged on the cooling unit 61. A heat exchange pipe 73 is also provided between the output end of the condenser 59 and the output end of the evaporator 60, and the output end of the evaporator 60 is also provided with a drain pipe 74, a heat exchange pipe 73, a cooling pipe 71 and the heating pipe 72 are provided with a one-way valve 75 .

The fourth feeding pipe 64 and the fifth feeding pipe 65 are provided with grid plates 62, so that the sludge in low temperature drying can be squeezed into strips or granules, thereby ensuring that the contact surface area between the sludge and the hot air is increased.

The second auger 57 and the third auger 58 are connected end-to-end, together with the unique gas circulation channel between the condenser 59, the evaporator 60, the cooling unit 61 and the compressor 63, so that the The sludge is continuously dried at low temperature inside the second auger 57 and the third auger 58 .

The granulation assembly includes a stirring bin 10 , a preheating bin 11 , a roasting bin 12 , a cooling bin 13 and a cyclone 14 which are arranged in sequence.

The top of the stirring bin 10 is detachably and sealedly connected to the output end of the third spiral auger 58 through the sixth feeding pipe 102. The sixth feeding pipe 102 is provided with a fifth solenoid valve 103, and the top of the stirring bin 10 is also connected. A feeding pipe 104 is provided, and the outer and inner side walls of the stirring bin 10 are respectively provided with a first ring body 105 and a second ring body 106 at the same height. A star-shaped bracket 108 is coaxially connected to the second ring body 106 for rotation. The middle of the lower end of the star-shaped bracket 108 is provided with a stirring shaft 109 coaxial with it. The stirring shaft 109 has blades 110 evenly distributed. Three iron blocks 111 are embedded symmetrically with the second ring body 106 (the number of iron blocks 111 is equal to the number of the connecting arms of the star bracket 108 ); the stirring bin 10 , the first ring body 105 , the second ring body 106 , the star The type bracket 108 , the stirring shaft 109 and the blade 110 are all made of non-magnetic metal materials. The bottom of the stirring bin 10 is also provided with a seventh feeding pipe 112 , and the seventh feeding pipe 112 is provided with a sixth solenoid valve 113 .

The specific process for the electromagnet 107 to drive the stirring shaft 109 to rotate is as follows: the electromagnets 107 on the first ring body 105 are energized and de-energized in turn, thereby forming a rotating magnetic field. At this time, the iron blocks 111 inside the star are rotated by the receiver displacement due to the action of the magnetic field.

A method for using a municipal sludge coupling granulation system, comprising the following steps:

In step (1), the user calculates the damping coefficient (that is, the equivalent stiffness coefficient of the equivalent spring) required by the shock absorber assembly according to the knowledge of the series and parallel of the springs, and then the user adjusts the corresponding adjustment rod 38 so that each The damping coefficients of the shock-absorbing components are all equal to the required damping coefficients. During this process, the user judges whether the telescopic column 32 corresponding to the shock-absorbing cylinder 21 is fixed by observing the color of the display rod 41, and removes the sludge from the cover. The feeding port 4 on the plate 2 is poured into the vibrating screen 1, so as to screen the sludge and the solid impurities mixed therein. The sludge on the inner wall of the vibrating screen 1 is washed away.

In step (2), the sludge screened by the vibrating screen 1 is discharged into the receiving box 7, and the receiving box 7 keeps vibrating synchronously with the vibrating screen 1 through the transmission assembly, so as to facilitate the discharge of the sludge inside it into the first screw auger 8 .

In step (3), the first screw auger 8 sends the sludge into the drying box 45 through the second feeding pipe 49. During this process, the first solenoid valve 44 on the air guide pipe 43 is opened and the The sterilizing gas is uniformly input into the first auger 8, so that the sludge in the first auger 8 is sterilized.

Step (4), first connect the anode plate 46 and the cathode plate 47 to the anode and cathode ends of the DC voltage stabilizer, and then the anode plate 46 in the drying box 45 is driven by the electro-hydraulic rod 48 to the cathode plate 47. The sludge is squeezed and energized, so that the sludge is dehydrated under the action of electroosmosis.

Step (5), in the above step (4), the sewage and waste gas discharged by the sludge under the dual action of electro-osmosis and extrusion are respectively discharged to the designated recovery and treatment device through the drain pipe 56 and the exhaust pipe 55 .

Step (6), immediately following the above step (4), when the sludge in the drying box 45 is dehydrated, the valve assembly on the third feeding pipe 51 is opened, and the push plate 76 will dewater under the cooperation of the driving motor 78 and the screw. The sludge is pushed into the third feeding pipe 51. During this process, the second pulse valve 84 will continuously spray clean pulsed airflow to the inside of the drying box 45 under the driving of the transfer pump 83, so as to adhere to the anode plate. 46 and the sludge on the cathode plate 47 are blown off, and then the push plate 76 is completely received in the second sealing cover 79 under the cooperation of the driving motor 78 and the screw, then the valve assembly is closed, and then the second pulse valve 84 is in the delivery pump 83. Under the driving of the drying box 45, clean pulsed water flow is continuously sprayed inside, so as to clean the plate surfaces of the anode plate 46 and the cathode plate 47.

In step (7), the servo motor 96 drives the auger shaft 95 to rotate to feed the sludge in the third feeding pipe 51 into the second auger 57 .

In step (8), the second auger 57 and the third auger 58 are activated, so that the sludge circulates in the second auger 57 and the third auger 58. During this process, the sixth feeding pipe 102 The fifth solenoid valve 103 is in a closed state, and during this process, the third solenoid valve 66 on the fifth feeding pipe 65 is in an open state, and during this process, the condenser 59, the evaporator 60, the cooling unit 61 and the compressor 63 are all started, so that the condenser 59 can transport the dry high-temperature hot air against the moving direction of the sludge, and then the moisture-saturated low-temperature hot air is recycled to the evaporator 60, and then the evaporator 60 dries the moisture-saturated low-temperature hot air and inputs it into the evaporator 60. To the compressor 63 , the compressor 63 outputs the dry high-temperature hot air to the condenser 59 .

Step (9), in the above step (8), the water dried by the evaporator 60 from the water-saturated low-temperature hot air is discharged to the designated recovery and treatment device through the liquid discharge pipe 74, and the cooling unit 61 is used for the compressor 63. heat dissipation.

In step (10), after the sludge is dried in the low-temperature drying assembly, the fifth solenoid valve 103 on the sixth feeding pipe 102 is opened, and the third solenoid valve 66 on the fifth feeding pipe 65 is closed, so that the dried The sludge is discharged into the mixing bin 10 through the sixth feeding pipe 102 .

In step (11), the user injects additives into the stirring bin 10 through the feeding pipe 104, and then starts the electromagnets 107 on the first ring body 105 in turn, thereby driving the stirring shaft 109 to rotate, thereby removing the sludge in the stirring bin 10. Mix evenly with additives, and let the sludge age in the mixing bin 10 after mixing.

In step (12), the sixth solenoid valve 113 on the seventh feeding pipe 112 is opened, so that the aged sludge enters the preheating bin 11 for drying and preheating. It is worth noting that the aged sludge will The preheating chamber 11 is squeezed into sludge balls one by one.

In step (13), the preheated sludge roasting bin 12 is roasted at high temperature, so that the sludge balls become ceramic balls.

In step (14), the fired ceramic balls are sent to the cooling bin 13 for cooling.

In step (15), the cooled ceramic balls are sent to the cyclone separator 14 for separation, so as to obtain non-toxic ceramic balls and ceramic sand of a specified size.

The screening, drying, disinfection and granulation processes of the sludge in the present invention are all isolated from the external environment, thereby further improving the safety and environmental protection of the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications to equivalent changes. The embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solutions of the present invention without departing from the content of the technical solutions of the present invention.

Claims (7)

1. The utility model provides a mud coupling granulation system is used in municipal administration which characterized in that: comprises a screening component, a transferring component, a drying component and a granulating component which are arranged in sequence;

the screening assembly comprises a vibrating screen (1), a cover plate (2) arranged at an opening at the top end of the vibrating screen (1), a screen plate (3) arranged inside the vibrating screen (1) and damping assemblies arranged on supporting feet at the bottom of the vibrating screen (1), wherein a plate surface of the cover plate (2) close to the input end of the vibrating screen (1) is provided with a feeding port (4), the output end of the vibrating screen (1) is respectively provided with an upper discharging pipe (5) at the upper end of the screen plate (3) and a lower discharging pipe (6) at the lower end of the screen plate (3), and the damping coefficient of the damping assemblies is adjustable;

the transfer assembly comprises a receiving box (7) and a first spiral packing auger (8), an inlet at the top of the receiving box (7) is detachably and hermetically fixedly connected with a lower discharging pipe (6), an outlet of the receiving box (7) close to the bottom of the receiving box is detachably and hermetically fixedly connected with a feeding hole (4) of the first spiral packing auger (8) through a first feeding pipe (9), a transmission assembly matched with the vibrating screen (1) is further arranged on the receiving box (7), and a disinfection assembly is further arranged on the first spiral packing auger (8);

the drying component comprises an electroosmosis drying component and a low-temperature drying component which are sequentially arranged;

the granulating component comprises a stirring bin (10), a preheating bin (11), a roasting bin (12), a cooling bin (13) and a cyclone separator (14) which are arranged in sequence;

a group of first pulse valves (15) are arranged on the side walls of the two ends of the vibrating screen (1), and the first pulse valves (15) at the two ends of the vibrating screen (1) are distributed in a staggered manner;

the disinfection component comprises an air storage cylinder (42), an air guide pipe (43) arranged on the air storage cylinder (42) and a first electromagnetic valve (44) arranged on the air guide pipe (43), wherein the other end of the air guide pipe (43) is arranged on a pipe body at the input end of the first spiral auger (8);

the electroosmosis drying component comprises a drying box (45), an anode plate (46), a cathode plate (47) and an electric hydraulic rod (48), wherein the cathode plate (47) is horizontally and fixedly arranged inside the drying box (45), the anode plate (46) is horizontally and movably arranged inside the drying box (45), the anode plate (46) is driven by a group of electric hydraulic rods (48) symmetrically arranged on the top wall inside the drying box (45), the input end of the drying box (45) is detachably and hermetically connected with the output end of a first spiral packing auger (8) through a second feeding pipe (49), a second electromagnetic valve (50) is arranged on the second feeding pipe (49), a third feeding pipe (51) is arranged at the output end of the drying box (45), and when the electric hydraulic rod (48) is completely contracted, the pipe orifice of the output end of the second feeding pipe (49) is vertically positioned between the anode plate (46) and the cathode plate (47), the inner pipe wall at the lower end of the third feeding pipe (51) is flush with the plate surface of the cathode plate (47), filter plates (52) are arranged on the side walls of the drying box (45) on two sides in the feeding direction, micron-sized or below filter holes (53) are densely distributed in the filter plates (52), a first sealing cover (54) matched with the filter plates (52) is further arranged on the outer side wall of the drying box (45), and an exhaust pipe (55) and a drain pipe (56) are respectively arranged at the upper end and the lower end of the first sealing cover (54);

the low-temperature drying component comprises a second spiral auger (57), a third spiral auger (58), a condenser (59), an evaporator (60), a cooling unit (61) and a compressor (63), wherein the second spiral auger (57) and the third spiral auger (58) are inclined relative to the ground, the input end of the upper end of the second spiral auger (57) is detachably and hermetically connected with a third feeding pipe (51), the output end of the lower end of the second spiral auger (57) is detachably and hermetically connected with the input end of the lower end of the third spiral auger (58) through a fourth feeding pipe (64), the output end of the upper end of the third spiral auger (58) is detachably and hermetically connected with the third feeding pipe (51) through a fifth feeding pipe (65), a third electromagnetic valve (66) is arranged on the fifth feeding pipe (65), and a hot air output pipe (67) is arranged at the output end of the condenser (59), the terminal branch of hot-blast output tube (67) has two branch pipes, and two branch pipes at the end of hot-blast output tube (67) set up the output at second spiral auger (57), the output of third spiral auger (58) respectively, the input of evaporimeter (60) is equipped with cold wind recovery tube (68), the terminal branch of cold wind recovery tube (68) has two branch pipes, and two branch pipes at the end of cold wind recovery tube (68) set up the input at second spiral auger (57), the input of third spiral auger (58) respectively, be equipped with cold air pipe (69) between the output of evaporimeter (60) and compressor (63) input, be equipped with steam pipe (70) between the input of condenser (59) and the output of compressor (63), still branch has cooling tube (71) and heating pipe (72) on hot steam pipe (70), the other ends of the cooling pipe (71) and the heating pipe (72) are respectively arranged at a cold air output end and a hot air input end of the cooling unit (61), a heat exchange pipe (73) is arranged between the output end of the condenser (59) and the output end of the evaporator (60), and a liquid discharge pipe (74) is arranged at the output end of the evaporator (60);

grid plates (62) are arranged in the fourth feeding pipe (64) and the fifth feeding pipe (65);

the heat exchange pipe (73), the cooling pipe (71) and the heating pipe (72) are all provided with one-way valves (75);

the cleaning assembly comprises a water storage tank (81), an air filter (82), a delivery pump (83) and second pulse valves (84), a group of second pulse valves (84) are further symmetrically arranged on the box body on one side of the input end of the drying box (45), the second pulse valves (84) are connected with the output end of the delivery pump (83) through delivery pipes (85), a three-way pipe (86) is arranged at the input end of the delivery pump (83), two branch pipes of the three-way pipe (86) are respectively connected with the water storage tank (81) and the air filter (82), and fourth electromagnetic valves (87) are arranged on the two branch pipes of the three-way pipe (86).

2. The municipal sludge coupling granulation system according to claim 1, wherein a set of limiting bodies (16) are symmetrically arranged on the side walls of the two ends of the vibrating screen (1), limiting holes (17) with central axes vertical to the ground are formed in the limiting bodies (16), limiting rods (18) matched with the limiting holes (17) are connected in the limiting holes (17) in a penetrating manner, and the bottoms of the limiting rods (18) are fixed on the ground;

the shock absorption assembly comprises an upper mounting plate (19), a lower mounting plate (20) and shock absorption cylinders (21), wherein a group of shock absorption cylinders (21) which are in parallel relation are symmetrically arranged on the lower mounting plate (20), each shock absorption cylinder (21) on the lower mounting plate (20) is connected with a group of shock absorption cylinders (21) which are the same in number in series, and the shock absorption cylinder (21) at the uppermost end is fixedly connected with the upper mounting plate (19);

the transmission assembly comprises a transmission rod (22), a cushioning spring (23) and a mounting seat (24), the top of the bearing box (7) is fixedly connected with the bottom of the vibrating screen (1) through a group of transmission rod (22), the bottom of the bearing box (7) is connected with the top of the mounting seat (24) through a group of cushioning spring (23), and the mounting seat (24) is fixed on the ground.

3. The municipal sludge coupling granulation system according to claim 2, wherein the upper cylinder cover (25) and the lower cylinder cover (26) of the vibration-damping cylinder (21) are connected through a corrugated pipe (27), the middle of the upper end surface of the lower cylinder cover (26) is provided with a column groove (28) in an inward recessed manner, a supporting column (29) matched with the column groove (28) is fixed in the column groove (28), the middle of the top end surface of the supporting column (29) is provided with a telescopic groove (30) in an inward recessed manner, the bottom wall of the telescopic groove (30) is provided with a stroke groove (31) in an inward recessed manner, the projection of the notch of the telescopic groove (30) on the bottom wall of the stroke groove (31) is positioned in the middle of the bottom wall of the stroke groove (31), the size of the notch of the telescopic groove (30) is smaller than that of the bottom wall of the stroke groove (31), and the telescopic column (32) matched with the telescopic groove (30) is slidably connected in the telescopic groove (30), the top end of the telescopic column (32) is fixed in the middle of the lower end of the upper cylinder cover (25), the outer ends of the support column (29) and the telescopic column (32) are also provided with a damping spring (33) which is coaxial with the support column and the telescopic column, two ends of the damping spring (33) are respectively fixed with the upper cylinder cover (25) and the lower cylinder cover (26), the two ends of the inner part of the stroke groove (31) along the stroke direction are provided with clamping blocks (34), the top ends of the clamping blocks (34) are respectively provided with a groove (35) matched with the telescopic column (32), the bottoms of the clamping blocks (34) are respectively provided with a first screw groove (36), the thread directions in the two first screw grooves (36) are opposite, shaft grooves (37) which are coaxial and matched with the first screw grooves (36) penetrate through the lower cylinder cover (26) and the supporting column (29), the adjusting rod (38) is movably connected in the shaft grooves (37), the middle part of the adjusting rod (38) is provided with threads which are respectively matched with the two first screw grooves (36);

the interior of the receiving box (7) is in a slope shape with a low output end and a high input end.

4. The municipal sludge coupling granulation system according to claim 3, wherein hand wheels (39) are disposed at the ends of the adjusting rods (38) at the outer ends of the damper cylinders (21), rod grooves (40) which are coaxial and communicate with the stroke grooves (31) are further formed in the side walls of the lower end cover and the supporting columns (29), display rods (41) made of piezochromic materials are disposed in the rod grooves (40), and the rod bodies of the display rods (41) in the stroke grooves (31) are pressed by the two clamping blocks (34) in the stroke grooves (31).

5. The municipal sludge coupling granulation system according to claim 1, wherein a discharge assembly and a cleaning assembly are further provided on the input side of the drying box (45);

the subassembly of unloading includes push pedal (76), first screw rod (77) and driving motor (78), seted up on the box of drying cabinet (45) input one side with negative plate (47) complex logical groove, the notch department sealed of leading to the groove outer end is fixed with second sealed cowling (79), push pedal (76) activity sets up inside second sealed cowling (79), first screw rod (77) spiro union is in second spiral shell groove (80) on push pedal (76), the outer end of first screw rod (77) passes second sealed cowling (79) and is connected with driving motor (78) of second sealed cowling (79) outer end, the length and the width of push pedal (76) face all are greater than the length and the width of negative plate (47) face, and the lower extreme face of push pedal (76) and the upper end face coplane of negative plate (47).

6. The municipal sludge coupling granulation system according to claim 1, wherein the third feed pipe (51) is further provided with a valve assembly and a blanking assembly;

the valve component comprises a guide rail plate (88), a second screw rod (89), a rotating motor (90) and a baffle plate (91), wherein the two guide rail plates (88) are symmetrically arranged on the outer wall of one side of the output end of the drying box (45), the second screw rod (89) perpendicular to the ground is rotatably connected to the guide rail rod, the second screw rod (89) is driven to rotate by the corresponding rotating motor (90), bulges (92) are arranged at the two ends of the baffle plate (91), the bulges (92) are respectively in threaded connection with the corresponding screw rods, the baffle plate (91) is in a plate groove (93) in the upper end pipe body of the third feeding pipe (51) in a penetrating mode, when the bulges (92) are in contact with the lower end of the guide rail plate (88), the baffle plate (91) completely blocks the third feeding pipe (51), and when the bulges (92) are in contact with the upper end of the guide rail plate (88), the third feeding pipe (51) is completely conducted, and the plate body at the lower end of the baffle plate (91) is still in the plate groove (93) (ii) a

Unloading subassembly is including setting up xarm (94), the auger shaft (95) of rotation connection on xarm (94) and setting up servo motor (96) at third conveying pipe (51) outer wall inside third conveying pipe (51) terminal body, auger shaft (95) axis vertical ground and its direction of delivery are down, first rectangular channel (97) have still been seted up on the outer wall of third conveying pipe (51) one end, second rectangular channel (98) that switch on with first rectangular channel (97) have still been seted up on xarm (94), auger shaft (95) are equipped with driven gear (99) in second rectangular channel (98) middle-end, driven gear (99) are connected through chain (101) synchro-drive with servo motor (96) output epaxial driving gear (100).

7. The municipal sludge coupling granulation system according to claim 1, wherein the top of the stirring bin (10) is detachably and hermetically connected with the output end of the third screw auger (58) through a sixth feeding pipe (102), a fifth electromagnetic valve (103) is arranged on the sixth feeding pipe (102), a feeding pipe (104) is further arranged on the top of the stirring bin (10), a first ring body (105) and a second ring body (106) are respectively arranged on the outer side wall and the inner side wall of the stirring bin (10) at the same height, a group of electromagnets (107) are symmetrically embedded on the first ring body (105), a star-shaped support (108) is coaxially and rotatably connected on the second ring body (106), a stirring shaft (109) coaxial with the star-shaped support (108) is arranged in the middle of the lower end of the star-shaped support, and blades (110) are uniformly distributed on the stirring shaft (109), a group of iron blocks (111) are symmetrically embedded in the star-shaped support (108) and the second ring body (106); the stirring bin (10), the first ring body (105), the second ring body (106), the star-shaped support (108), the stirring shaft (109) and the blades (110) are all made of non-magnetic metal materials, a seventh feeding pipe (112) is further arranged at the bottom of the stirring bin (10), and a sixth electromagnetic valve (113) is arranged on the seventh feeding pipe (112).

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