CN111359302A - A sewage pretreatment equipment for pipe flow power generation - Google Patents

Abstract

The invention discloses a sewage pretreatment device for pipe flow power generation, which comprises an overflow type multi-stage filtering water collecting tank annular inclined plate contact enhanced sedimentation water chamber, and N annular inclined plates connected with corresponding overflow pipes are in contact with each other. Strengthened sedimentation water chamber, magnetic suction sealing water plug drainer, and the drainage port at the bottom of the magnetic suction sealing water plug drainer is connected to the suction acceleration pipeline. The invention can be built in various high-rise buildings to realize the filtration, sedimentation, transfer and acceleration of domestic sewage, and generate electricity through the attached turbine accessory module, can effectively collect and utilize the hydraulic potential energy of the high-level water body, and make it Play considerable economic value. After the sewage is filtered and settled, it is sprayed out through the drain to reach the suction acceleration pipeline, and then the potential energy of the water flow itself is used to achieve the purpose of power generation pretreatment that the pipeline flow is fully accelerated.

Description

A sewage pretreatment equipment for pipe flow power generation

technical field

The invention relates to a sewage pretreatment device for pipe flow power generation, belonging to the technical field of water treatment devices.

Background technique

Some scholars pointed out: So far, only 13.6% of the world's hydropower potential has been developed. In 1982, the United States announced a new small hydroelectric power generation device, which is a floating structure, which has an air chamber and a ballast chamber, a DC diffuser, a water turbine and a generator installed in the cavity. The whole device is installed on the overflow channel (the discharge hole of the overflow dam, the sluice, the channel, etc.) for power generation. Japan's Koshin Electric Co., Ltd. has developed an ultra-small kilogram-level runoff hydroelectric power generation device, which can be used as a power source for general households or fish farms in the mountains, and helps factories to achieve energy saving by using wastewater to generate electricity. 10 ~ 20kW class-based. On this basis, some scholars have developed 0.5kW and 1kW products, both of which are composed of permanent magnet generators, battery packs, and control devices with inverters, and only need a water volume of more than 2L/s. The Ministry of Economy, Trade and Industry of Japan conducts a basic survey on the potential power generation capacity of industrial water. Utilizing industrial water pipelines to supply water to various enterprises from upstream reservoirs and other facilities through pipelines is expected to be a potential energy source of hydropower, but the current situation is almost unutilized.

In China, such as the siphonic hydroelectric power generation device proposed by Wen Changming et al. (Patent No.: CN209067405U), the siphonic hydroelectric power generation system proposed by Xie Xiuzhong (patent No.: CN107435611A), and the siphonic hydropower generation system of Gaoba Hydropower Station proposed by Zhu Anxin (Patent No.: CN107435611A) Patent No.: CN106836155A) and a siphon power generation system proposed by Kou Xianwei et al. (Patent No.: CN206092277U), the scheme mainly includes a high dam reservoir, a siphon pipe, a main flow pipe, an axial flow generator, an impulse hydroelectric generator and a deep well pump , which utilizes the pressure difference between the water pressure of the Gaoba reservoir and the water outlet of the siphon water outlet pipe to quickly suck the water from the reservoir into the siphon pipe, and then flows into the main flow pipe. There are multiple axial flow generators installed on the main flow pipe. The axial flow generators are arranged in a stepped arrangement. The bottom end of the main flow pipe is installed with an impact type hydroelectric generator, which converts the kinetic energy of the reservoir elevation water into electric energy and realizes siphoning. hydroelectric power generation. The pipelines in the scheme can be expected to be large diameter pipelines, which require a large body of water. In addition, the use of multi-stage axial flow generators will increase water resistance and increase flow velocity losses along the way, which exposes the limitations of wanting to achieve power generation through multi-stage utilization. In addition, a sewage siphon power generation device (patent number: CN104251180A) proposed by Ma Guoguo et al. directly utilizes the water flow of sewage flowing in the siphon tube to lubricate the inner bearing device with clean water as the breakthrough point. Considering the sewage siphon power generation device Plastic protective layer on metal surfaces in contact with sewage, but it does not specifically consider the complexity of water bodies. The relevant theories for sewage filtration and sedimentation have been mentioned in the prior art, but the structure design in the prior art is too complicated, which is inconvenient to design, manufacture and put into use, and the overly dense structure makes logistical maintenance difficult. In addition, in the existing tube flow acceleration technology, there is the air column method with built-in spiral ribs, and there is also the common water jet method. In the water jet principle, the initial velocity of the water flow plays a crucial role, and the tube flow with a relatively small initial velocity will be difficult to accelerate the water flow by the water jet method. Therefore, it is very necessary to design a device suitable for generating electricity in such situations, which has a convenient and orderly internal structure and can reduce maintenance difficulties.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is that the existing sewage pretreatment equipment is not adaptable in many occasions, and the logistical maintenance is too frequent.

In order to solve the above-mentioned technical problems, the technical scheme of the present invention is realized as follows:

A sewage pretreatment device for pipe flow power generation, characterized in that it includes:

The overflow-type multi-stage filtering water collecting tank is composed of water inlet area, water collection area and sludge area in order from top to bottom. There is a filter cover between the water inlet area and the water collection area, and the water collection area and the sludge area are provided with a filter cover. There is a sewage separation disc between them, a sewage outlet is arranged at the bottom of the sludge area, and a decontamination sealing cover is arranged at the end of the sewage outlet; a guide tube is arranged in the sludge area, and the upper end of the guide tube passes through the sewage separation disc. It is connected with one port of the N-pass pipe, the guide pipe is provided with a filter element, and the other ports of the N-pass pipe are respectively connected with an overflow pipe, and the outlet end of the overflow pipe is exposed from the overflow multi-stage filtering water collecting tank;

N ring-shaped inclined plates connected to the corresponding overflow pipes are in contact with the intensified settling water chamber, and there are water injection pipes inside the annular inclined plates in contact with the intensified settling water chambers. Exposed, the lower end extends to the lower part of the annular inclined plate contacting the intensified sedimentation water chamber and is fixed by the baffle plate and the annular inclined plate in contact with the inner wall of the intensified sedimentation water chamber; the upper part of the annular inclined plate contacting the intensified sedimentation water chamber is provided with at least one water outlet , the water inlet at the upper end of the water injection pipe is connected with the overflow pipe; the bottom of the annular inclined plate contacts the reinforced sedimentation water chamber, and there is a sewage outlet, and the end of the sewage outlet is provided with a sewage end cover; the annular inclined plate contacts the middle of the enhanced sedimentation water chamber An annular inclined plate is provided, and the annular inclined plate is fixed to the inner wall of the reinforced settlement water by contacting the annular inclined plate with the annular suspension;

Magnetic suction type sealing water plug drainer, the middle part of the magnetic suction type sealing water plug drainer is provided with a water inlet of the drainer, all the water outlets of the annular inclined plate contacting the reinforced sedimentation water chamber are connected with the water inlet of the drainer; The top of the water plug drainer is provided with a dust-proof box cover. The dust-proof box cover is connected to the bottom water-sealing plug through two thin guide rods. The bottom of the water-sealing plug is embedded with small iron blocks, which are fixed by tightening screw caps. At the bottom of the water sealing plug, the bottom of the magnetic suction sealing water plug drainer is provided with a water outlet, the outer edge of the water outlet is sleeved with a magnet ring matched with the small iron block; the water outlet is connected to the suction acceleration pipeline.

Preferably, the top of the overflow multi-stage filtering water collecting tank is provided with a box cover; the bottom is conical.

Preferably, the filter cover is provided with permeable holes that are densely distributed at the bottom and the top, and the edges of the filter cover are overlapped and embedded on the inner side wall of the water collecting area through flanges; the N-pass pipe is connected to the filter cover through a cleaning rod.

Preferably, the filter tube is provided with a two-stage conical filter element.

Preferably, the pore size of the holes on the dirt-repellent disc is smaller than the pore size of the holes on the filter cover.

Preferably, the top of the annular inclined plate contacting the enhanced sedimentation water chamber is provided with a large sealing end cover; the lower part is hemispherical; the outlet of the annular inclined plate contacting the enhanced sedimentation water chamber is connected to an elbow joint.

Preferably, the larger the radius of the annular inclined plate contacting the annular inclined plate in the intensified sedimentation water chamber, the larger the inclination angle of the annular inclined plate from the radius.

Preferably, the thin guide rod is connected to the water sealing plug through a limit nut.

Preferably, the suction acceleration pipeline includes an acceleration nozzle, a negative pressure pipe and a spiral rib pipeline that are connected in sequence, and the drain port of the magnetically closed water plug drainer is communicated with the acceleration nozzle through a siphon pipeline; the negative pressure pipe is connected to the acceleration nozzle. A suction hole is provided at one end of the nozzle connection.

Compared with the prior art, the beneficial effect of the present invention is that: the equipment of the present invention can be constructed in various high-rise buildings to realize the filtration, sedimentation, transfer and acceleration of rain/sewage, and conduct the filtering, sedimentation, transfer and acceleration of rainwater/sewage through the connected turbine unit module. Power generation can effectively collect and utilize the hydraulic potential energy of high-level water bodies, and make it exert considerable economic value. After the sewage is filtered and settled, it is sprayed out through the drain to reach the suction acceleration pipeline, and then the potential energy of the water flow itself is used to achieve the purpose of power generation pretreatment that the pipeline flow is fully accelerated.

Description of drawings

1 is a schematic structural diagram of a sewage pretreatment device for pipe flow power generation provided by an embodiment;

Fig. 2 is the top view of the sewage pretreatment equipment for pipe flow power generation provided by the embodiment;

Fig. 3 is the schematic diagram of overflow type multi-stage filtration water collecting tank and annular inclined plate contact strengthening type settling water chamber;

Fig. 4 is the structural representation of overflow multistage filtering water collecting tank;

Fig. 5 is the structural representation of N-pass pipe;

6 is a partial cross-sectional view of a guide tube;

Fig. 7 is the structure schematic diagram of annular inclined plate contact strengthening type settling water chamber;

Fig. 8 is the structural representation of annular inclined plate;

Figure 9 is a schematic structural diagram of an annular swash plate and an annular suspension;

FIG. 10 is a schematic structural diagram of a magnetic suction-type sealing water plug drainer;

Fig. 11 is the perspective view of the magnetic suction type sealing water plug drainer;

Figure 12 is a partial cross-sectional view of the magnetically engaging water-sealing plug drainer;

13 is a schematic structural diagram of the suction acceleration pipeline;

Fig. 14 is a partial cross-sectional view of the suction acceleration line.

Detailed ways

In order to make the present invention more obvious and comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

Example

As shown in FIG. 1, it is a sewage pretreatment equipment for pipe flow power generation provided by the present invention. Combined sealing water plug drainer 3, suction acceleration pipeline 4.

As shown in Figures 3 and 4, the overflow multi-stage filtering water collecting tank 1 is provided with a water inlet at the top, and four five-way water outlets are arranged in the middle. The overflow multi-stage filtration water collecting tank 1 is provided with, from top to bottom, a filter cover 7, a cleaning rod 6, a five-way pipe 8, a guide pipe 9, an overflow pipe 10, a contamination disc 11, and a conical filter. Core 12; on the outside: a box cover 5 is provided above, and a decontamination sealing cover 13 is provided below. When the sewage is continuously injected from the water inlet pipe on the tank cover, the water flow first reaches the central area of the filter cover 7, and the water body contains hair, clothing cotton fibers, etc., which are easy to form large dirt groups, and the central area of the filter cover 7 No water-permeable hole structure, the water flow will flow downward from the water-permeable holes on the conical slope of the filter cover 7 . A contamination disc 11 is also installed on the guide tube 9 below the filter cover 7 , and the contamination disc 11 should have a smaller hole structure than the water permeable holes on the filter cover 7 . A part of the floating objects remaining in the water flow will be blocked on the dirt-repellent disc 11 .

In FIG. 5 , the threads on the lower part of the cleaning rod 6 are respectively connected with the hollow structures of the bosses of the filter cover 7 and the five-way pipe 8, and the overflow pipe 10 is installed in the four water outlets in the middle of the overflow multi-stage filtering water collecting tank 1, And one end is connected with the five-way pipe 8, and the other end is connected with the quick connector. When it is necessary to clean the overflow multi-stage filter water collecting tank 1, just unscrew the thread between the overflow pipe 10 and the five-way pipe 8, and the cleaning rod 6 can clean the overflow multi-stage filtering water collecting tank 1. All parts are taken out, and then the decontamination sealing cover 13 is opened to remove the dirt accumulated at the bottom of the overflow multi-stage filter water collecting tank 1, which has the effect of quick and convenient maintenance.

In FIG. 6 , the outer ends of the diversion pipe 9 are respectively matched and connected with the contamination disc 11 and the water inlet of the five-way pipe 8 , and the contamination disc 11 and the water inlet of the five-way pipe 8 are mutually limiting. Inside the guide tube 9, a two-stage conical filter core 12 is embedded, which is essentially a conical cone with a simple structure and open at both ends. However, this structure can effectively reduce the moving speed of the floating objects in the water body, thereby achieving The function of collecting flotage and sedimentation filtration. When the water flows through the contamination disc 11 and falls to the bottom of the overflow multi-stage filtering water collecting tank 1, the water level will continue to increase. The water level in the guide pipe 9 rises with the rise of the upper water surface, until the upper water surface is submerged in the five-way pipe, the water flow in the guide pipe 9 enters the five-way pipe and flows to the four outlets, and is injected into the annular inclined pipe through the overflow pipe 10. The plate is in contact with the intensified settling water chamber 2 .

As shown in Figure 3 and Figure 7, the water flows through the quick connector and contacts the water injection pipe 15 of the enhanced sedimentation water chamber 2 through the annular inclined plate and firstly collects at the bottom of the sedimentation water chamber. The outside of the annular inclined plate contacting the reinforced settling water chamber 2 is equipped with a large sealing end cover 14, an elbow joint 20 and a sewage end cover 19, and a baffle plate 18, a water injection pipe 15, an annular suspension 16 and three types are installed inside. Different types of annular inclined plates 17. Due to the distribution of the flow velocity, the water flowing out of the water injection pipe 15 will cause a dynamic fluid environment in which the fluid moves downward in a certain central area, while the fluid surges upward at the edge. At this time, since the baffle plate 18 has water permeable holes in a certain regular distribution, the speed of the water flow will be reduced. When the water flow gradually rises and enters the area shown in Figure 8, it will pass through the annular inclined plate 17 whose cross section is parallel to the upper end and the cross section is inclined and enlarged. heavy and eventually fall.

Referring to FIG. 9 again, the baffle plate 18 and the annular suspension 16 are both screwed to the lower and middle parts of the water injection pipe 15, and the radius and the inclination angle of the annular inclined plate 17 are also continuously increased to exert the effect of gradually increasing the flow cross section. effect. Due to the negative pressure generated by the water injection of the water injection pipe 15, the water body in the central area of the upper part of the baffle plate will have a tendency to pass through the water permeable hole in the central area of the baffle plate and fall to the bottom of the annular inclined plate to contact the bottom of the enhanced sedimentation chamber 2. Therefore, the dynamic sedimentation function of the water body can be accomplished through the above-mentioned annular inclined plate contacting the internal structure of the enhanced sedimentation water chamber 2 . Gradually, after a period of use, the flocculated sediment falling on the bottom of the closed water chamber can be discharged by simply opening the discharge end cover 19 . Finally, the water diffused from the annular inclined plate 17 flows through the hose connected by the elbow joint 20 and merges into the magnetic suction type sealing water plug drainer 3 .

As shown in Figure 2, Figure 10, Figure 11, all the annular inclined plates contact the water outlet of the enhanced sedimentation water chamber 2 (in this embodiment, four annular inclined plates contact the enhanced sedimentation water chamber 2, and each annular inclined plate The water outlet of the reinforced sedimentation water chamber 2) is connected with a water stop valve, and the two water stop valves are a group, which is connected to one of the two water inlets of the magnetic suction sealing water plug drainer 3 through a three-way connection. A dust-proof box cover 21 is installed on the upper part of the magnetic suction type sealing water plug drainer 3, and the dust-proof box cover 21 is provided with two smooth through holes for the reciprocating movement of the thin guide rod 23, and the lower end of the thin guide rod 23 passes through Water sealing plugs 25 are installed and fixed on the two limit nuts 24 , and the water flow (in the direction of the arrow in FIG. 2 ) flows to the water inlet 22 of the drain through the pipeline. Because the lower end of the water sealing plug 25 is installed with a small iron block 26 through the set screw cap 27, a magnet ring 28 is provided above the outer end of the drain outlet and the siphon pipe 29 as shown in Figure 12. When the amount of water in the drain is very small, due to the action of gravity, the water sealing plug 25 together with the thin guide rod 23 will fall to the lowest position and block the water outlet. And due to the action of the magnetic force, the suction force of the water sealing plug 25 is the largest when it is in the water sealing position. When the water level gradually rises, although the water sealing plug will be affected by buoyancy, the buoyancy is not enough to offset the resultant force of each component's own gravity and magnetic attraction force. Both the thin guide rod 23 and the water sealing plug 25 are made of buoyant materials, and the raised water surface height will increase the buoyancy of the buoyancy components (thin guide rod and water sealing plug, etc.), when the water surface rises to the design water level, The upward buoyancy force will be greater than the downward resultant force, thereby overcoming the attraction force of the magnet ring 28 and causing the water sealing plug 25 to rise rapidly along the through hole with the thin guide rod 23 . At this time, because there is a siphon pipe 29 at the lower end as shown in Figure 1, a certain siphon pressure difference will be formed with the upper water surface inside the drain, and the siphon pressure difference will push the water body to discharge quickly. Because the farther the small iron block 26 is from the magnet ring 28, the magnetic attraction force decreases sharply, so the water will not be re-sealed. The buoyancy part gradually descends with the water surface, and when the water body is nearly empty, it seals the water outlet again. After that, the above rules are repeated.

As shown in Figure 13 and Figure 14, the pipe flow ejected through the siphon pipeline 29 enters the suction acceleration pipeline 4 after a falling distance. The suction acceleration pipeline 4 includes: the acceleration nozzle 30, the negative pressure tube 31 and the spiral The rib pipeline 32 is provided with a suction hole 33 on the negative pressure pipe, and the acceleration nozzle 30 has a nozzle with a narrowed cross-section, which can accelerate the pipe flow by utilizing the continuity condition of the fluid. The negative pressure pipe 31 is connected to the lower end of the acceleration nozzle 30, but includes the nozzle, and its structure is shown in FIG. 14 . The accelerated pipe flow will generate a negative pressure area in the area above the nozzle of the negative pressure pipe 31 that is lower than the external atmospheric pressure, so as to utilize this effect to continuously inhale air from the suction holes. The air sucked into the pipe flow will further form air bubbles, which will be entrained in the water flow and fall together. The lower end of the negative pressure pipe 31 in the figure is also provided with a spiral rib pipe 32, the function of which is to generate a centrifugal effect of rotating and falling. In this way, the principle of water jet can be combined with the spiral rib pipeline in the prior art, so that the air bubbles in the pipeline flow are separated under the action of rotating centrifugal force, and a more stable air column is formed in the pipeline, so as to achieve a more effective fall Acceleration function.

Based on the above, the present invention solves the problems of difficult power generation and treatment of domestic sewage, unclear equipment manufacturing model and frequent logistical maintenance by designing the water channels and pipelines of the sewage pretreatment equipment to be assembled and convenient.

Claims (9)

1. A sewage pretreatment apparatus for pipe flow power generation, comprising:

the overflow type multi-stage filtering water collecting tank (1) is internally provided with a water inlet area, a water collecting area and a sludge area from top to bottom in sequence, a filtering cover (7) is arranged between the water inlet area and the water collecting area, a dirt separating disc (11) is arranged between the water collecting area and the sludge area, the bottom of the sludge area is provided with a sewage draining outlet, and the end part of the sewage draining outlet is provided with a dirt removing sealing cover (13); a flow guide pipe (9) is arranged in the sludge area, the upper end of the flow guide pipe (9) penetrates through a sewage isolation disc (11) to be communicated with one port of the N through pipe, a filter element (12) is arranged in the flow guide pipe (9), other ports of the N through pipe are respectively connected with an overflow pipe (10), and the outlet end of the overflow pipe (10) is exposed out of the overflow type multi-stage filtering water collection tank (1);

the water injection pipes (15) are arranged in the annular inclined plate contact strengthened settling water chambers (2), the upper ends of the water injection pipes (15) are exposed out of the tops of the annular inclined plate contact strengthened settling water chambers (2), and the lower ends of the water injection pipes extend to the lower portions of the annular inclined plate contact strengthened settling water chambers (2) and are fixed with the inner walls of the annular inclined plate contact strengthened settling water chambers (2) through flow baffles (18); the upper part of the annular sloping plate contact reinforced settling water chamber (2) is provided with at least one water outlet, and a water inlet at the upper end of the water injection pipe (15) is communicated with the overflow pipe (10); the bottom of the annular sloping plate contact reinforced settling water chamber (2) is provided with a sewage draining outlet, and the end part of the sewage draining outlet is provided with a sewage draining end cover (19); the middle part of the annular sloping plate contact strengthened settling water chamber (2) is provided with an annular sloping plate (17), and the annular sloping plate (17) is fixed with the inner wall of the annular sloping plate contact strengthened settling water chamber (2) through an annular suspension (16);

the magnetic suction type water sealing plug drainer (3) is characterized in that the middle of the magnetic suction type water sealing plug drainer (3) is provided with a drainer water inlet (22), and the water outlets of all annular inclined plates in contact with the intensified settling water chamber (2) are communicated with the drainer water inlet (22); the top of the magnetic attraction type water sealing plug drainer (3) is provided with a dustproof box cover (21), the dustproof box cover (21) is connected with a water sealing plug (25) at the bottom through two thin guide rods (23), the bottom of the water sealing plug (25) is embedded with a small iron block (26), the small iron block (26) is fixed at the bottom of the water sealing plug (25) through a fastening screw cover (27), the bottom of the magnetic attraction type water sealing plug drainer (3) is provided with a water outlet, and the outer edge of the water outlet is sleeved with a magnet ring (28) matched with the small iron block (26); the water outlet is connected with an air suction acceleration pipeline (4).

2. The sewage pretreatment apparatus for pipe flow power generation according to claim 1, wherein a tank cover (5) is provided on the top of the overflow type multistage filtering header tank (1); the bottom is conical.

3. The sewage pretreatment apparatus for pipe flow power generation according to claim 1, wherein the filter cover (7) is provided with water permeable holes distributed densely at the lower part and the edge thereof is overlapped on the inner side wall of the water collection area by a flange; the N through pipe is connected with a filter cover (7) through a cleaning rod (6).

4. The apparatus for pretreating sewage for pipe flow power generation according to claim 1, wherein a two-stage conical filter element is provided in the filter pipe (12).

5. Sewage pretreatment apparatus for pipe flow power generation according to claim 1, characterized in that the aperture of the holes of the dirt-separating disc (11) is smaller than the aperture of the holes of the filter housing (7).

6. The sewage pretreatment apparatus for pipe flow power generation according to claim 1, wherein a large end sealing cover (14) is provided on the top of the annular inclined plate contact enhanced settling water chamber (2); the lower part is hemispherical; the water outlet of the annular sloping plate contact reinforced settling water chamber (2) is connected with a bent pipe joint (20).

7. The sewage pretreatment apparatus for pipe flow power generation according to claim 1, wherein the larger the radius of the annular inclined plate (17) in the contact enhanced settling water chamber (2) is, the larger the inclination angle thereof from the radius is.

8. The sewage pretreatment apparatus for pipe flow power generation according to claim 1, wherein the thin guide rod (23) is connected to the water sealing plug (25) through a limit nut (24).

9. The sewage pretreatment apparatus for pipe flow power generation according to claim 1, wherein the suction acceleration pipe (4) comprises an acceleration nozzle (30), a negative pressure pipe (31) and a spiral rib pipe (32) which are connected in sequence, and a water outlet of the magnetic suction type water-sealing plug drainer (3) is communicated with the acceleration nozzle (30) through a siphon pipe (29); one end of the negative pressure pipe (31) connected with the accelerating nozzle (30) is provided with an air suction hole (33).

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