CN110282436A - A kind of positive Pressure Transportation System - Google Patents

Abstract

The invention discloses a positive pressure conveying system, which comprises a tank car, a first-level silo, and a screw feeder. The first-level silo dust removal system, the first-level silo is equipped with a vulcanization device, the buffer silo is installed under the first-level silo, and the first-level silo discharge is set between the first-level silo and the buffer silo. Valve, the screw feeder is connected with an air storage tank, the air storage tank is connected with a cold dryer, the cold dryer is connected with a buffer storage bin through a pipeline, and the buffer storage bin is fed through a secondary storage bin The pipes are respectively connected with a number of secondary silos, and the several secondary silos are connected with a cyclone separation system through pipelines, and the cyclone separation system is connected with a bag dust removal system. The present invention adopts high-density high-pressure plug-flow conveying, and consumes less compressed air to convey more materials.

Description

A positive pressure delivery system

technical field

The invention relates to the technical field of material conveying, in particular to a positive pressure conveying system.

Background technique

Baking soda, namely sodium bicarbonate (Sodium Bicarbonate), commonly known as "baking soda", "soda powder", "heavy cao", white fine crystals, the solubility in water is less than sodium carbonate. It is an industrial chemical and may be toxic. The solid begins to decompose gradually above 50°C to form sodium carbonate, carbon dioxide and water, and completely decomposes at 440°C. Sodium bicarbonate is an acid salt formed by neutralizing a strong base and a weak acid. It is weakly alkaline when dissolved in water. This characteristic allows it to be used as a leavening agent in food preparation. Sodium bicarbonate will leave sodium carbonate after the action, and if used too much, the finished product will have an alkaline taste.

The traditional conveying device for particles like baking soda has low conveying efficiency and can only convey to a single silo.

Contents of the invention

The purpose of the present invention is to provide a positive pressure delivery system to solve the problems in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions: a positive pressure conveying system, including a tank car, a primary silo, and a screw feeder, the tank car is connected to the primary silo through a primary feed pipe, A first-level silo dust removal system is installed on the top of the first-level silo, a vulcanization device is installed on the first-level silo, and a buffer silo is installed below the first-level silo. There is a primary silo discharge valve between them, the screw feeder is connected with an air storage tank, and the air storage tank is connected with a cold dryer, and the cold dryer is connected with the buffer storage bin through a pipeline, and the pipeline Located at the buffer silo, it is divided into three pipelines: a pressurized pipeline, a vulcanized pipeline and a conveying pipeline. The pressurized pipeline is equipped with a pneumatic ball valve, a pressure transmitter and a pneumatic diaphragm valve. Both the vulcanized pipeline and the conveying pipeline are Pneumatic ball valves, proportional regulating valves and pneumatic diaphragm valves are installed. The buffer silos are respectively connected to several secondary silos through secondary silo feeding pipes, and several secondary silos are connected to cyclone separation systems through pipelines. The cyclone separation system is connected with a bag dust removal system.

Preferably, the primary feed pipe extends to the upper part inside the primary silo, and the top of the primary silo is provided with a respirator and an inlet hole for the primary silo.

Preferably, a pressure transmitter is installed on one side of the top of the buffer silo, and an air inlet of the buffer silo is opened on the other side of the top of the buffer silo.

Preferably, the pressurization pipeline, the vulcanization pipeline and the delivery pipeline are arranged sequentially from top to bottom, and the delivery pipeline is connected to the feeding pipe of the secondary silo.

Preferably, the primary silo is installed on the primary silo platform, the secondary silo is installed on the secondary silo platform, and a weighing module is arranged between the secondary silo and the secondary silo platform .

Preferably, a switching valve for the secondary conveying pipe is installed on the feeding pipe corresponding to each of the secondary silos, and a screw feeder is correspondingly arranged below each of the secondary silos.

Preferably, both the primary silo dedusting system and the bag dedusting system are provided with a pulse blowback system.

Preferably, a precision filter is installed on the pipeline between the air storage tank and the cold dryer, and a precision filter is installed on the pipeline between the cold dryer and the buffer storage bin.

Compared with prior art, the beneficial effect of the present invention is:

1. High-pressure compressed air is used for conveying, and the material is cut into a column flow by compressed air in the pipeline, with high material-air ratio and high conveying efficiency;

2. Using the control principle of the centralized feeding system, one pump bin corresponds to multiple receiving points (multiple secondary bins), and one pipeline can realize multi-bin delivery.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic structural view of the upper part of the primary silo of the present invention.

Fig. 3 is a schematic structural view of the buffer storage bin of the present invention.

Fig. 4 is a schematic diagram of the connection structure of the screw feeder, the air storage tank, the cold dryer and the precision filter of the present invention.

Fig. 5 is a structural schematic diagram of the cyclone separation system and the bag dust removal system of the present invention.

In the figure: 1. Tank car; 2. Primary feeding pipe; 3. Primary silo inlet; 4. Primary silo dust removal system; 5. Respirator; 6. Primary silo; 7. Primary material silo platform; 8. vulcanization device; 9. primary silo discharge valve; 10. pressure transmitter; 11. buffer silo; 12. buffer silo air inlet; 13. secondary silo feeding pipe; 14 1. Secondary conveying material pipe switching valve; 15. Weighing module; 16. Secondary silo platform; 17. Secondary silo; 18. Pneumatic ball valve; 19. Proportional regulating valve; 20. Pneumatic diaphragm valve; 21. Spiral Feeder; 22. Screw feeder; 23. Air storage tank; 24. Dryer; 25. Precision filter; 26. Cyclone separation system; 27. Bag dust removal system.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1-5, in the embodiment of the present invention, a kind of positive pressure conveying system comprises tank car 1, primary silo 6, screw feeder 22 and control system, and tank car 1 passes primary feed pipe 2 and The first-level silo 6 is connected, the top of the first-level silo 6 is equipped with a first-level silo dedusting system 4, the first-level silo 6 is equipped with a vulcanization device 8, and the bottom of the first-level silo 6 is installed with a buffer silo 11, and the first-level material A primary silo discharge valve 9 is arranged between the bin 6 and the buffer bin 11, the screw feeder 22 is connected with an air storage tank 23, and the air storage tank 23 is connected with a cold dryer 24, and the cold dryer 24 passes through the pipeline It is connected to the buffer silo 11, and the pipeline is located at the buffer silo 11. It is divided into three pipelines: a pressurized pipeline, a vulcanized pipeline and a delivery pipeline. A pneumatic ball valve 18, a pressure transmitter 10 and a pneumatic diaphragm valve 20 are installed on the pressurized pipeline. , Pneumatic ball valves 18, proportional regulating valves 19 and pneumatic diaphragm valves 20 are installed on the vulcanization pipeline and the delivery pipeline, and the buffer silo 11 is respectively connected with several secondary silos 17 through the secondary silo feed pipe 13, and several secondary silos. The bins 17 are all connected to the cyclone separation system 26 through pipelines, and the cyclone separation system 26 is connected to the bag dust removal system 27. The primary feeding pipe 2 extends to the upper part of the primary silo 6, and the top of the primary silo 6 is provided with a respirator. 5 and the inlet hole 3 of the primary silo, a pressure transmitter 10 is installed on one side of the top of the buffer silo 11, and the other side of the top of the buffer silo 11 is provided with a buffer silo air inlet 12, a pressurized pipeline, a vulcanization pipeline and The conveying pipelines are arranged sequentially from top to bottom, and the conveying pipelines are connected with the feed pipe 13 of the secondary silo, the primary silo 6 is installed on the primary silo platform 7, and the secondary silo 17 is installed on the secondary silo platform 16 A weighing module 15 is arranged between the secondary silo 17 and the secondary silo platform 16, and a secondary conveying material switching valve 14 is installed on the secondary silo feed pipe 13 corresponding to each secondary silo 17 Each secondary silo 17 is provided with a screw feeder 21 correspondingly, the primary silo dust removal system 4 and the bag dust removal system 27 are equipped with a pulse blowback system, an air storage tank 23 and a cold dryer 24 A precision filter 25 is installed on the pipeline between them, and a precision filter 25 is installed on the pipeline between the cold dryer 24 and the buffer storage bin 11; the control system of this application has two working modes: automatic and manual on the spot. The mode is the regular operation mode; in the local mode, the operator manually operates each device through the button set on the local box; in the automatic operation, the operator can operate through the PLC control cabinet, and the system automatically operates and operates according to the pre-programmed program. Stop the equipment so that the entire conveying system runs automatically according to the program. When the conditions are not met or the selected equipment fails, the cause of the failure will be displayed on the simulation screen, and the program will enter the protection or interlock state to ensure the safe operation of the equipment. In the local mode, the operator manually operates each single device and valve through the button set on the local box. This mode is generally used for debugging and maintenance; each production line is controlled by a set of PLC, and this part adopts programmable As the main control machine, the controller directly controls and coordinates the normal work of each conveying system (including monitoring the pulse dust collector on the top of the silo and the material level signal of the powder silo), and has an analog panel to display the operating conditions of each equipment. The gas source pressure on the gas point is used for monitoring; each production line is controlled by a set of PLC, and this part uses a programmable controller as the main control machine to directly control and coordinate each conveying system (including the pulse dust collector on the top of the monitoring warehouse) , powder storehouse material level signal) to work normally, with an analog panel to display the operating conditions of each equipment, monitor the air source pressure on each air point, and use digital display instruments to display the working pressure of the warehouse pump, Air source pressure, etc., to monitor the operation of the warehouse pump; to send out sound and light alarms for various abnormal conditions during operation; to remind the operator to pay attention; when the alarm is issued, the corresponding display lights are on and flashing; the buzzer sends out an alarm sound.

The working principle of the present invention is: using compressed air as the power source, by intermittently opening and closing the pump chamber, a section of material and a section of compressed air are formed in the pipeline. The air static pressure difference forms a propulsion force, so that the material is continuously discharged to the corresponding silo.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. A positive pressure conveying system, comprising a tank car (1), a primary silo (6), and a screw feeder (22), characterized in that: the tank car (1) passes through the primary feeding pipe (2 ) is connected to the first-level silo (6), the top of the first-level silo (6) is equipped with a first-level silo dust removal system (4), and the first-level silo (6) is equipped with a vulcanization device (8), A buffer silo (11) is installed under the primary silo (6), and a primary silo discharge valve (9) is arranged between the primary silo (6) and the buffer silo (11). The screw feeder (22) is connected with an air storage tank (23), the air storage tank (23) is connected with a cold dryer (24), and the cold dryer (24) is (11) connection, the pipeline is located at the buffer silo (11) and is divided into three pipelines: a pressurized pipeline, a vulcanized pipeline and a delivery pipeline, and a pneumatic ball valve (18) and a pressure transmitter are installed on the pressurized pipeline (10) and a pneumatic diaphragm valve (20), the vulcanization pipeline and the delivery pipeline are equipped with a pneumatic ball valve (18), a proportional regulating valve (19) and a pneumatic diaphragm valve (20), and the buffer storage bin (11) A number of secondary silos (17) are respectively connected through the secondary silo feeding pipes (13), and several of the secondary silos (17) are connected with a cyclone separation system (26) through pipelines, and the cyclone separation system (26) Connect with bag dust removal system (27) on. 2. A positive pressure conveying system according to claim 1, characterized in that: the primary feeding pipe (2) extends to the upper part inside the primary silo (6), and the primary silo (6) ) is provided with a respirator (5) and a primary silo inlet hole (3) on the top. 3. A positive pressure conveying system according to claim 1, characterized in that: a pressure transmitter (10) is installed on one side of the top of the buffer silo (11), and a pressure transmitter (10) is installed on the top of the buffer silo (11). The air inlet (12) of the buffer bin is provided on the side. 4. A positive pressure conveying system according to claim 1, characterized in that: the pressurized pipeline, the vulcanized pipeline and the conveying pipeline are sequentially arranged from top to bottom, and the conveying pipeline and the feeding pipe of the secondary silo ( 13) Connect. 5. A positive pressure conveying system according to claim 1, characterized in that: the primary silo (6) is installed on the primary silo platform (7), and the secondary silo (17) It is installed on the secondary silo platform (16), and a weighing module (15) is arranged between the secondary silo (17) and the secondary silo platform (16). 6. A positive pressure conveying system according to claim 5, characterized in that: each secondary silo (17) corresponding to the secondary silo feeding pipe (13) is equipped with a secondary conveying material A pipe switching valve (14), and a screw feeder (21) is correspondingly arranged below each of the secondary silos (17). 7. A positive pressure conveying system according to claim 1, characterized in that: the primary silo dedusting system (4) and the bag dedusting system (27) are equipped with a pulse blowback system.