Polyurethane screen production waste gas treatment device

Abstract

The utility model relates to the technical field of polyurethane screen mesh production, and discloses a polyurethane screen mesh production waste gas treatment device which comprises a plurality of shower tanks, an adsorption tank, a chemical pool and a photolysis box, the adjacent shower tanks are sequentially connected through communicating pipes, and the shower tanks, the adsorption tank, the chemical pool and the photolysis box are sequentially connected through communicating pipes. The lower portion of any shower tank is connected with an air inlet pipe, nozzles in multiple directions are arranged in the shower tanks, a plurality of detachable adsorption plates are arranged in the adsorption tanks, the upper portions of the photolysis boxes are connected with the same main pipe through air guide pipes, the main pipe is communicated with the communicating pipe, and the lower portions of the photolysis boxes are connected with air outlet pipes. And the air guide pipe and the air outlet pipe are connected with valves. The utility model has the advantages that the multi-barrel shower is not easy to block, the treatment effect is good, the photolysis part is alternately carried out, and the photolysis effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane screen production, in particular to a polyurethane screen production waste gas treatment device. Background Art

[0002] The causes of waste gas generation during the production of polyurethane screens include gas release from chemical reactions, solvent volatilization, pyrolysis reactions, mechanical operations, and volatilization of raw materials. These factors lead to the release of volatile organic compounds and other gases, and measures need to be taken to control and treat waste gas emissions.

[0003] At present, the commonly used method for treating waste gas is filtration combined with photolysis technology. In the filtration stage, a shower method is usually used to remove harmful substances that are easily soluble in water. A common practice is to use a single-tube multi-layer shower structure for treatment. However, due to the rapid movement of gas in the pipeline, even if a multi-layer shower structure is set up, it is still difficult to effectively remove soluble impurities. Similarly, in the photolysis stage, single-tube photolysis cannot achieve rotating photolysis. Photolysis while the gas enters the photolysis tube is easy to lead to insufficient photolysis and unsatisfactory treatment effect. In addition, in the activated carbon filtration stage, activated carbon tends to accumulate more impurities that are insoluble in water, resulting in ventilation difficulties. Therefore, the existing treatment methods still have room for improvement in improving waste gas treatment efficiency and avoiding accumulation problems. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a polyurethane screen production waste gas treatment device which has multiple shower barrels, is not easy to be blocked, has good treatment effect, and has photolysis parts rotatingly carried out and has good photolysis effect.

[0005] In order to solve the above-mentioned technical problems, the technical solution proposed in the utility model is: a polyurethane screen production waste gas treatment device, including a shower tank, an adsorption tank, a chemical pool and a photolysis box, wherein the shower tank is provided in plurality, and adjacent shower tanks, shower tanks, adsorption tanks, chemical pools and photolysis boxes are connected in sequence through connecting pipes, an air inlet pipe is connected below any shower tank, nozzles in multiple directions are provided in the shower tank, a number of detachable adsorption plates are provided in the adsorption tank, and a plurality of photolysis boxes are provided, and a same main pipe is connected above the photolysis boxes through an air guide pipe, and the main pipe is connected to the connecting pipe, an air outlet pipe is connected below the photolysis box, and valves are connected to the air guide pipe and the air outlet pipe.

[0006] Furthermore, an annular tube is connected to the inner wall of the shower tank, the nozzle is fixed on the inner side of the annular tube, and the nozzles are respectively arranged obliquely upward and obliquely downward. A water pipe is connected to one side of the annular tube, and the other end of the water pipe extends out of the shower tank and is connected to the same water inlet pipe. A water outlet pipe is connected below the shower tank.

[0007] Based on the above characteristics, the nozzle is set obliquely upward and downward to clean the gas in a larger range with good treatment effect. The outlet pipe facilitates the discharge of waste water in the shower tank to avoid excessive accumulation of waste water affecting the treatment effect of exhaust gas.

[0008] Furthermore, the upper and lower ends of the adsorption tank are respectively connected with a matching air extraction pump and an air extraction fan, and the air extraction pump and the air extraction fan are connected to the end of the connecting pipe.

[0009] Based on the above characteristics, the exhaust pump and the exhaust fan can promote the rapid and directional flow of exhaust gas, which is beneficial to improving the processing efficiency of the device.

[0010] Furthermore, a plurality of adsorption racks are slidingly provided in the adsorption tank, the adsorption plate is clamped on the adsorption rack, a handle is provided on one side of the adsorption rack extending out from the adsorption tank, a cleaning brush is provided above each adsorption plate in the adsorption tank, the cleaning brush is driven by a screw drive fixed on the adsorption tank, and a dust hopper is connected to the bottom of the adsorption tank.

[0011] Based on the above features, the adsorption frame can slide out of the adsorption tank, and the adsorption plate can be removed from the adsorption frame, which is convenient for quick disassembly of the adsorption plate for cleaning. At the same time, the cleaning brush can clean the adsorption plate during its operation, effectively avoiding its blockage and ensuring a continuous good adsorption effect. The dust hopper can collect the dust falling on the adsorption plate for easy disposal.

[0012] Furthermore, an ultraviolet lamp is provided in the photolysis box.

[0013] Based on the above characteristics, ultraviolet lamps can effectively photolyze waste gas.

[0014] Compared with the prior art, the utility model has the following advantages: the device includes multiple shower tanks, which can ensure that the waste gas is fully exposed to the treatment liquid and improve the treatment efficiency. The nozzles are arranged in different directions, which helps to make the waste gas contact the treatment liquid evenly and achieve a good treatment effect. The adsorption plate in the adsorption tank is detachable, which makes it easy to clean and replace the adsorption material. In addition, the cleaning brush is fixed on the adsorption tank, and the adsorption plate can be cleaned regularly through the screw drive, which effectively avoids the blockage of the adsorption plate, ensures the long-term stable operation of the equipment and a good adsorption treatment effect. There are multiple photolysis boxes, and the switch is controlled by a valve, which can be used in rotation, and the photolysis time of the waste gas in the photolysis box can be controlled, which helps to improve the photolysis effect and achieve a thorough treatment of the waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is the front view of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the annular tube part of the utility model;

[0018] Figure 4 It is a schematic diagram of the internal structure of the adsorption tank of the utility model.

[0019] As shown in the figure: 1. Shower tank; 2. Adsorption tank; 3. Chemical pool; 4. Photolysis box; 5. Connecting pipe; 6. Air inlet pipe; 7. Nozzle; 8. Adsorption plate; 9. Air guide pipe; 10. Main pipe; 11. Air outlet pipe; 12. Valve; 13. Ring pipe; 14. Water guide pipe; 15. Water inlet pipe; 16. Water outlet pipe; 17. Vacuum pump; 18. Exhaust fan; 19. Adsorption rack; 20. Handle; 21. Cleaning brush; 22. Screw drive; 23. Dust hopper. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Combined with Figure 1 , Attachment Figure 2 A polyurethane screen production waste gas treatment device includes a shower tank 1, an adsorption tank 2, a chemical pool 3 and a photolysis box 4. The shower tank 1 is provided with multiple, and adjacent shower tanks 1, shower tanks 1, adsorption tanks 2, chemical pools 3, and photolysis boxes 4 are connected in sequence through connecting pipes 5. The upper and lower ends of the adsorption tank 2 are respectively connected with matching vacuum pumps 17 and vacuum fans 18, and the vacuum pumps 17 and vacuum fans 18 are connected to the ends of the connecting pipe 5. The vacuum pumps 17 and vacuum fans 18 can promote rapid and directional circulation of waste gas, which is beneficial to improving the treatment efficiency of the device.

[0022] Combined with Figure 2 , Attachment Figure 3 An air inlet pipe 6 is connected to the bottom of any shower tank 1, and nozzles 7 in multiple directions are arranged in the shower tank 1. An annular tube 13 is connected to the inner wall of the shower tank 1. The nozzle 7 is fixedly arranged on the inner side of the annular tube 13. The nozzles 7 are arranged obliquely upward and downward respectively. A water guide pipe 14 is connected to one side of the annular tube 13. The other end of the water guide pipe 14 extends out of the shower tank 1 and is connected to the same water inlet pipe 15. A water outlet pipe 16 is connected to the bottom of the shower tank 1. The nozzles 7 are arranged obliquely upward and downward to clean the gas in a larger range, and the treatment effect is good. The water outlet pipe 16 facilitates the discharge of waste water in the shower tank 1 to avoid excessive accumulation of waste water affecting the treatment effect of waste gas.

[0023] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 4The adsorption tank 2 is provided with a plurality of detachable adsorption plates 8, and a plurality of adsorption racks 19 are slidably provided in the adsorption tank 2. The adsorption plate 8 is snap-connected to the adsorption rack 19, and a handle 20 is provided on one side of the adsorption rack 19 extending out of the adsorption tank 2 and connected to the adsorption tank 2. A cleaning brush 21 is provided above each adsorption plate 19 in the adsorption tank 2, and the cleaning brush 21 is driven by a screw driver 22 fixed to the adsorption tank 2. A dust collecting hopper 23 is connected to the lower part of the adsorption tank 2. The adsorption rack 19 can slide out of the adsorption tank 2, and the adsorption plate 8 can be removed from the adsorption rack 19, so that the adsorption plate 8 can be quickly disassembled for cleaning. At the same time, the cleaning brush 21 can clean the adsorption plate 8 during its working process, effectively avoiding its clogging and ensuring a continuous and good adsorption effect. The dust collecting hopper 23 can collect dust falling on the adsorption plate 8 for convenient processing.

[0024] Combined with Figure 1 The photolysis box 4 is provided with a plurality of them. The upper part of the photolysis box 4 is connected with a common main pipe 10 through an air guide pipe 9. The main pipe 10 is connected with the connecting pipe 5. The lower part of the photolysis box 4 is connected with an air outlet pipe 11. The air guide pipe 9 and the air outlet pipe 11 are both connected with valves 12. The photolysis box 4 is provided with an ultraviolet lamp, which can effectively photolyze the waste gas.

[0025] The specific implementation mode of the utility model is as follows: the device is connected to an external power supply, exhaust gas is introduced through the air inlet pipe 6, and cleaning liquid is introduced into the water inlet pipe 15 at the same time. The cleaning liquid enters the annular pipe 13 through the water guide pipe 14, and then is sprayed out through the nozzle 7 to mix with the exhaust gas, so as to achieve the cleaning treatment of water-soluble impurities in the exhaust gas. The outlet pipe 16 is opened regularly to discharge the waste water, and the air pump 17 and the exhaust fan 18 are turned on. The exhaust gas is cleaned by each shower tank 1 in turn and then enters the adsorption tank 2 through the connecting pipe 5. After being adsorbed layer by layer by multiple adsorption plates 8, the exhaust gas enters the chemical pool 3, and the screw drive 22 is turned on at the same time to drive the cleaning brush 21 to move the adsorption plate 8. Cleaning, regularly take out the adsorption rack 19, remove the adsorption plate 8 for cleaning or replacement, the solid impurities falling from the adsorption plate 8 fall into the dust hopper 23, the dust hopper 23 can be cleaned regularly, the exhaust gas entering the chemical pool 3 is cleaned of harmful substances after chemical reaction, and finally the exhaust gas enters the main pipe 10, and the valves 12 on each air duct 9 are opened in turn, so that the exhaust gas enters the corresponding photolysis box 4 for photolysis, and then the valves 12 on the air outlet pipe 11 are opened in the same order, so that the photolyzed gas is discharged from the air outlet pipe 11, and the above operation is repeated, and the valves 12 on the air duct 9 are opened in turn to realize the rotation photolysis of the gas in the photolysis box 4.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A polyurethane screen production waste gas treatment device, comprising a shower tank (1), an adsorption tank (2), a chemical tank (3) and a photolysis box (4), characterized in that: There are multiple shower tanks (1), and adjacent shower tanks (1), shower tanks (1), adsorption tanks (2), chemical pools (3), and photolysis boxes (4) are connected in sequence through connecting pipes (5). An air inlet pipe (6) is connected below any shower tank (1). The shower tank (1) is provided with nozzles (7) in multiple directions. The adsorption tank (2) is provided with a plurality of detachable adsorption plates (8). There are multiple photolysis boxes (4). The photolysis boxes (4) are connected to the same main pipe (10) above through an air guide pipe (9). The main pipe (10) is connected to the connecting pipe (5). An air outlet pipe (11) is connected below the photolysis box (4). Valves (12) are connected to the air guide pipe (9) and the air outlet pipe (11).

2. A polyurethane screen production waste gas treatment device according to claim 1, characterized in that: An annular tube (13) is connected to the inner wall of the shower tank (1), the nozzle (7) is fixedly arranged inside the annular tube (13), and the nozzle (7) is arranged obliquely upward and obliquely downward respectively. A water guide pipe (14) is connected to one side of the annular tube (13), and the other end of the water guide pipe (14) extends out of the shower tank (1) and is connected to the same water inlet pipe (15). A water outlet pipe (16) is connected to the bottom of the shower tank (1).

3. A polyurethane screen production waste gas treatment device according to claim 1, characterized in that: The upper and lower ends of the adsorption tank (2) are respectively connected to a matching air extraction pump (17) and an air extraction fan (18), and the air extraction pump (17) and the air extraction fan (18) are connected to the end of the connecting pipe (5).

4. The polyurethane screen production waste gas treatment device according to claim 1, characterized in that: A plurality of adsorption racks (19) are slidably arranged in the adsorption tank (2), the adsorption plate (8) is snap-connected to the adsorption rack (19), one side of the adsorption rack (19) extends out of the adsorption tank (2) and is connected to a handle (20), a cleaning brush (21) is arranged above each adsorption plate (8) in the adsorption tank (2), the cleaning brush (21) is driven by a screw driver (22) fixed to the adsorption tank (2), and a dust collecting hopper (23) is connected to the lower side of the adsorption tank (2).

5. The polyurethane screen production waste gas treatment device according to claim 1, characterized in that: An ultraviolet lamp is arranged inside the photolysis box (4).

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