Polyurethane screen production waste gas treatment device

Abstract

The utility model relates to the technical field of polyurethane screen production waste gas treatment, and discloses a polyurethane screen production waste gas treatment device which comprises a spraying tank, a filter box and a photolysis tank, a water spraying assembly is arranged in the spraying tank, a fixing assembly is arranged at the front end of the filter box, the left end of the spraying tank is communicated with a gas inlet pipe, and the right end of the spraying tank is communicated with a gas outlet pipe. The bottom of the air inlet pipe communicates with a slag discharging pipe, and the inner wall of the air inlet pipe is fixedly connected with a filter screen. Water is sprayed out through the atomizing nozzles communicated with the inner wall of the annular pipe to form water mist, the water mist is in contact with water-soluble substances in waste gas, then part of harmful substances in the waste gas are taken away, and when the filter screen needs to be cleaned, the electromagnetic valve is started to enable the flushing pipe to be communicated with the annular pipe, so that the filter screen is cleaned. And a water source in the annular pipe is conveyed into the flushing pipe and sprayed out through the flushing spray head to clean the filter screen, cleaned impurities are discharged through the slag discharging pipe, the filter screen does not need to be manually cleaned, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane screen production waste gas treatment technology, and in particular to a polyurethane screen production waste gas treatment device. Background Technology

[0002] Polyurethane wire mesh has the characteristics of beautiful appearance, bright color, light weight, high mechanical strength, heat insulation, sound insulation, corrosion resistance and excellent weather resistance. However, the production process of polyurethane screens will generate waste gas, so waste gas purification treatment is required.

[0003] Traditional exhaust gas treatment devices typically install filters at the air inlet pipe to filter larger particles. However, with long-term use, the filters are easily clogged by particles. Since the filters are located inside the air inlet pipe, subsequent cleaning and maintenance are quite troublesome. Therefore, we propose an exhaust gas treatment device for polyurethane screen production. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a polyurethane screen production waste gas treatment device.

[0005] This utility model is achieved using the following technical solution: a polyurethane screen production waste gas treatment device, comprising a spray tank, a filter box, and a photolysis tank. The spray tank is equipped with a water spray assembly inside. The filter box has a fixing assembly at its front end. An air inlet pipe is connected to the left end of the spray tank, and a slag discharge pipe is connected to the bottom of the air inlet pipe. A filter screen is fixedly connected to the inner wall of the air inlet pipe. A drain pipe is connected to the bottom of the spray tank. A first connecting pipe is connected to the top of the spray tank. A fan is connected to the end of the first connecting pipe furthest from the spray tank. The bottom of the fan is connected to the top of the filter box. A limiting frame is fixedly connected to the front end of the filter box. An activated carbon mesh plate is slidably connected to the inner wall of the filter box. A sealing strip is fixedly connected to the inner wall of the limiting frame. A fixing plate is fixedly connected to the front end of the activated carbon mesh plate. A second connecting pipe is connected to the inner wall of the filter box. The end of the second connecting pipe furthest from the filter box is connected to the photolysis tank. Several ultraviolet lamps are fixedly connected to the top of the inner wall of the photolysis tank.

[0006] The water spray assembly includes a water inlet pipe, one end of which extends into the interior of the spray tank and is connected to an annular pipe. Several atomizing nozzles are fixedly connected inside the annular pipe. A rinsing pipe is connected to the bottom of the annular pipe. A solenoid valve is connected to the inner wall of the rinsing pipe. A rinsing nozzle is connected to the bottom of the rinsing pipe.

[0007] The above technical solution connects the inlet pipe to an external water pump, which draws water and delivers it to the inside of the inlet pipe. The water is then transported to the inside of the annular pipe, where it is sprayed out through several atomizing nozzles connected to the inner wall of the annular pipe, forming a water mist that comes into contact with water-soluble substances in the exhaust gas, thereby carrying away some of the harmful substances in the exhaust gas.

[0008] As a further improvement to the above solution, the surface of the annular tube is fixedly connected to the inner wall of the spray tank, and the rinsing nozzle is located on the left side of the filter screen.

[0009] The above technical solution uses a solenoid valve to open and close the flushing pipe. When the flushing pipe is open, water from inside the annular pipe enters the flushing pipe and is sprayed out through the flushing nozzle to flush the filter screen, removing impurities attached to the inner wall of the filter screen, preventing the filter screen from clogging, and ensuring the filtration effect of the filter screen.

[0010] As a further improvement to the above solution, the top of the photolysis tank is connected to an exhaust pipe, and valves are fixedly installed on the inner walls of the slag discharge pipe, the drain pipe, and the exhaust pipe.

[0011] With the above technical solution, the filtered exhaust gas can be discharged to the outside through the exhaust pipe, the air inlet pipe is wavy to prevent the rinsing water from being discharged through the left side of the air inlet pipe, the slag discharge pipe is located at the lowest position of the air inlet pipe so that the rinsing water and impurities can be discharged through the slag discharge pipe, and the spray water inside the spray tank can be discharged to the outside through the drain pipe.

[0012] As a further improvement to the above solution, the fixing component includes a fixing column, one end of which is fixedly connected to a mounting plate, the inner wall of which is threadedly connected to a threaded rod, one end of which passes through the mounting plate and is rotatably connected to a pressure plate, and the front end of the pressure plate is fixedly connected to a limit rod.

[0013] With the above technical solution, by rotating the threaded rod, the threaded rod drives the pressure plate to move backward, thus eliminating the squeezing of the fixed plate. By rotating the fixed column, the mounting plate is rotated to one side. At this time, the activated carbon mesh plate can be easily slid out using the handle on the fixed plate, making it convenient for subsequent replacement or cleaning.

[0014] As a further improvement to the above solution, the end of the fixed column away from the mounting plate is rotatably connected to the inner wall of the filter box.

[0015] With the above technical solution, since the fixed column is rotatably connected to the inner wall of the filter box, the fixed column can rotate to drive the mounting plate to rotate, thus avoiding obstruction when disassembling the activated carbon mesh plate.

[0016] As a further improvement to the above solution, the rear end of the pressure plate contacts the front end of the fixing plate, and the rear end of the fixing plate contacts the surface of the sealing strip.

[0017] Through the above technical solution, by rotating the threaded rod, the threaded rod pushes the pressure plate forward, and the pressure plate squeezes the fixed plate. At the same time, the fixed plate squeezes the sealing strip, ensuring the sealing effect of the filter box and preventing exhaust gas leakage. It also improves the disassembly and assembly efficiency of the activated carbon mesh plate. Moreover, the pressure plate is I-shaped, which squeezes both ends of the fixed plate, thereby ensuring the fixing effect. Furthermore, due to the friction generated by the pressure plate squeezing the fixed plate, the fixed column will not rotate.

[0018] As a further improvement to the above solution, the surface of the limiting rod is slidably connected to the inner wall of the mounting plate, and there are two limiting rods, which are symmetrically distributed with the mounting plate as the center.

[0019] The above technical solution uses a limiting rod to limit the pressure plate, preventing it from shifting during movement and ensuring its stability.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This invention features a spray assembly that uses several atomizing nozzles connected to the inner wall of an annular pipe to spray water, forming a water mist. This mist comes into contact with water-soluble substances in the exhaust gas, thereby carrying away some of the harmful substances. When the filter needs cleaning, a solenoid valve is activated to connect the flushing pipe to the annular pipe. Water from inside the annular pipe is then delivered to the flushing pipe and sprayed out through the flushing nozzles to clean the filter. The cleaned impurities are discharged through the slag discharge pipe. This eliminates the need for manual cleaning of the filter, improving its practicality.

[0022] This invention utilizes a fixing component, a limiting frame, a sealing strip, and a fixing plate. Specifically, when the activated carbon mesh needs to be disassembled, rotating the threaded rod causes the pressure plate to move backward, releasing the pressure on the fixing plate. Rotating the fixing column then rotates the mounting plate to one side, allowing the activated carbon mesh to be easily slid out using the handle on the fixing plate for subsequent replacement or cleaning. For installation, the activated carbon mesh is slid into the filter box, the fixing column is rotated, causing the mounting plate to rotate, and then the threaded rod is rotated, pushing the pressure plate forward. The pressure plate presses against the fixing plate, and simultaneously, the fixing plate presses against the sealing strip, ensuring the filter box's sealing effect, preventing exhaust gas leakage, and improving the efficiency of assembling and disassembling the activated carbon mesh. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic cross-sectional view of the present invention.

[0025] Figure 3 This is a schematic diagram of the water spray assembly and air inlet pipe structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the exploded structure of the filter box of this utility model;

[0027] Figure 5 This is a side view of the structure of this utility model.

[0028] Explanation of key symbols:

[0029] 1. Spray tank; 2. Filter box; 3. Photolysis tank; 4. Water spray assembly; 401. Water inlet pipe; 402. Annular pipe; 403. Atomizing nozzle; 404. Flushing pipe; 405. Solenoid valve; 406. Flushing nozzle; 5. Fixing assembly; 501. Fixing column; 502. Mounting plate; 503. Threaded rod; 504. Pressure plate; 505. Limiting rod; 6. Air inlet pipe; 7. Slag discharge pipe; 8. Filter screen; 9. Drain pipe; 10. First connecting pipe; 11. Fan; 12. Limiting frame; 13. Activated carbon mesh plate; 14. Sealing strip; 15. Fixing plate; 16. Second connecting pipe; 17. Ultraviolet lamp tube. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] Example:

[0032] Please combine Figure 1-5This embodiment of a polyurethane screen production waste gas treatment device includes a spray tank 1, a filter box 2, and a photolysis tank 3. The spray tank 1 is equipped with a water spray assembly 4. The filter box 2 has a fixing assembly 5 at its front end. An air inlet pipe 6 is connected to the left end of the spray tank 1, and a slag discharge pipe 7 is connected to the bottom of the air inlet pipe 6. A filter screen 8 is fixedly connected to the inner wall of the air inlet pipe 6. A drain pipe 9 is connected to the bottom of the spray tank 1, and a first connecting pipe 10 is connected to the top of the spray tank 1. The end of the first connecting pipe 10 furthest from the spray tank 1 is connected to… There is a fan 11, the bottom of which is connected to the top of the filter box 2. A limit frame 12 is fixedly connected to the front end of the filter box 2. An activated carbon mesh plate 13 is slidably connected to the inner wall of the filter box 2. A sealing strip 14 is fixedly connected to the inner wall of the limit frame 12. A fixing plate 15 is fixedly connected to the front end of the activated carbon mesh plate 13. A second connecting pipe 16 is connected to the inner wall of the filter box 2. The end of the second connecting pipe 16 away from the filter box 2 is connected to the photolysis tank 3. Several ultraviolet lamps 17 are fixedly connected to the top of the inner wall of the photolysis tank 3.

[0033] The water spray assembly 4 includes a water inlet pipe 401, one end of which extends into the interior of the spray tank 1 and is connected to an annular pipe 402. Several atomizing nozzles 403 are fixedly connected inside the annular pipe 402. A flushing pipe 404 is connected to the bottom of the annular pipe 402, and a solenoid valve 405 is connected to the inner wall of the flushing pipe 404. A flushing nozzle 406 is connected to the bottom of the flushing pipe 404. Larger particles in the exhaust gas are filtered through a filter screen 8 inside the air inlet pipe 6, facilitating subsequent exhaust gas treatment. Water is drawn by an external water pump and transported to the annular pipe through the water inlet pipe 401. Inside 402, several atomizing nozzles 403 connected to the inner wall of the annular pipe 402 spray water to form a water mist, which comes into contact with water-soluble substances in the exhaust gas, thereby carrying away some of the harmful substances in the exhaust gas. When it is necessary to clean the filter screen 8, the solenoid valve 405 is activated to connect the flushing pipe 404 with the annular pipe 402. The water source inside the annular pipe 402 is delivered to the inside of the flushing pipe 404 and sprayed out through the flushing nozzles 406 to clean the filter screen 8. The cleaned impurities are discharged through the slag discharge pipe 7. There is no need for manual cleaning of the filter screen 8, which improves its practicality.

[0034] The surface of the annular pipe 402 is fixedly connected to the inner wall of the spray tank 1, and the rinsing nozzle 406 is located on the left side of the filter screen 8.

[0035] The top of the photolysis tank 3 is connected to an exhaust pipe, and valves are fixedly installed on the inner walls of the slag discharge pipe 7, the drain pipe 9, and the exhaust pipe.

[0036] The fixing component 5 includes a fixing post 501, one end of which is fixedly connected to a mounting plate 502. A threaded rod 503 is threadedly connected to the inner wall of the mounting plate 502. One end of the threaded rod 503 passes through the mounting plate 502 and is rotatably connected to a pressure plate 504. A limit rod 505 is fixedly connected to the front end of the pressure plate 504. When it is necessary to remove the activated carbon mesh plate 13, by rotating the threaded rod 503, the threaded rod 503 drives the pressure plate 504 to move backward, releasing the pressure on the fixing plate 15. By rotating the fixing post 501, the mounting plate 502 is rotated to one side. At this time, the activated carbon mesh plate 13 can be easily slid out using the handle on the fixing plate 15, making it convenient for subsequent replacement or cleaning.

[0037] The end of the fixed column 501 away from the mounting plate 502 is rotatably connected to the inner wall of the filter box 2.

[0038] The rear end of the pressure plate 504 contacts the front end of the fixing plate 15, and the rear end of the fixing plate 15 contacts the surface of the sealing strip 14. The pressure plate 504 squeezes the fixing plate 15, and at the same time the fixing plate 15 squeezes the sealing strip 14, ensuring the sealing effect of the filter box 2 and preventing exhaust gas leakage.

[0039] The surface of the limiting rod 505 is slidably connected to the inner wall of the mounting plate 502. There are two limiting rods 505, which are symmetrically distributed with the mounting plate 502 as the center.

[0040] The implementation principle of the polyurethane screen production waste gas treatment device in this application embodiment is as follows: During use, the water inlet pipe 401 is connected to an external water pump, and the air inlet pipe 6 is connected to an external waste gas pipeline, allowing the waste gas to enter the interior of the spray tank 1 through the air inlet pipe 6. Larger particles in the waste gas are filtered by the filter screen 8 inside the air inlet pipe 6, facilitating subsequent waste gas treatment. Water is drawn by the external water pump and transported through the water inlet pipe 401 to the interior of the annular pipe 402. The water is sprayed out through several atomizing nozzles 403 connected to the inner wall of the annular pipe 402, forming a water mist that interacts with the waste gas. The filter screen 8 comes into contact with water-soluble substances, thereby carrying away some harmful substances in the exhaust gas. When cleaning the filter screen 8 is required, the solenoid valve 405 is activated, connecting the flushing pipe 404 to the annular pipe 402. Water from inside the annular pipe 402 is delivered to the interior of the flushing pipe 404 and sprayed out through the flushing nozzle 406 to clean the filter screen 8. The cleaned impurities are discharged through the slag discharge pipe 7. No manual cleaning of the filter screen 8 is required, improving its practicality. The blower 11 is activated, and the blower 11 sends the exhaust gas treated by spraying inside the spray tank 1 into the filter box 2 through the first connecting pipe 10. In the filter box 2, multiple activated carbon mesh plates 13 adsorb and filter the exhaust gas. After filtration, the exhaust gas enters the photolysis tank 3 through the second connecting pipe 16. The ultraviolet light irradiated by several ultraviolet lamps 17 can decompose and purify the remaining organic matter in the exhaust gas. When it is necessary to remove the activated carbon mesh plates 13, the threaded rod 503 is rotated, which drives the pressure plate 504 to move backward, releasing the pressure on the fixing plate 15. The fixing column 501 is rotated, which drives the mounting plate 502 to rotate to one side. At this time, the fixed plate 15 is exposed to the ultraviolet light. The activated carbon mesh plate 13 can be easily slid out using the handle, facilitating its replacement or cleaning later. When installing the activated carbon mesh plate 13, slide it into the interior of the filter box 2, rotate the fixing column 501 to rotate the mounting plate 502, and then rotate the threaded rod 503. The threaded rod 503 pushes the pressure plate 504 forward, which in turn presses the fixing plate 15 against the sealing strip 14, ensuring the sealing effect of the filter box 2, preventing exhaust gas leakage, and improving the efficiency of disassembly and assembly of the activated carbon mesh plate 13.

[0041] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A device for treating waste gas from polyurethane screen production, characterized in that, The system includes a spray tank (1), a filter box (2), and a photolysis tank (3). The spray tank (1) is equipped with a water spray assembly (4). The filter box (2) has a fixing assembly (5) at its front end. An air inlet pipe (6) is connected to the left end of the spray tank (1). A slag discharge pipe (7) is connected to the bottom of the air inlet pipe (6). A filter screen (8) is fixedly connected to the inner wall of the air inlet pipe (6). A drain pipe (9) is connected to the bottom of the spray tank (1). A first connecting pipe (10) is connected to the top of the spray tank (1). A fan (11) is connected to the end of the first connecting pipe (10) furthest from the spray tank (1). The bottom of the fan (11) is connected to the top of the filter box (2). The front end of the filter box (2) is fixedly connected to the limiting frame (12). The inner wall of the filter box (2) is slidably connected to the activated carbon mesh plate (13). The inner wall of the limiting frame (12) is fixedly connected to the sealing strip (14). The front end of the activated carbon mesh plate (13) is fixedly connected to the fixing plate (15). The inner wall of the filter box (2) is connected to the second connecting pipe (16). The end of the second connecting pipe (16) away from the filter box (2) is connected to the photolysis tank (3). The top of the inner wall of the photolysis tank (3) is fixedly connected to several ultraviolet lamp tubes (17). The water spray assembly (4) includes a water inlet pipe (401), one end of which extends into the interior of the spray tank (1) and is connected to an annular pipe (402). Several atomizing nozzles (403) are fixedly connected inside the annular pipe (402). A flushing pipe (404) is connected to the bottom of the annular pipe (402). A solenoid valve (405) is connected to the inner wall of the flushing pipe (404). A flushing nozzle (406) is connected to the bottom of the flushing pipe (404).

2. The polyurethane screen production waste gas treatment device as described in claim 1, characterized in that: The surface of the annular tube (402) is fixedly connected to the inner wall of the spray tank (1), and the flushing nozzle (406) is located to the left of the filter screen (8).

3. The polyurethane screen production waste gas treatment device as described in claim 1, characterized in that: The top of the photolysis tank (3) is connected to an exhaust pipe, and valves are fixedly installed on the inner walls of the slag discharge pipe (7), the drain pipe (9) and the exhaust pipe.

4. The polyurethane screen production waste gas treatment device as described in claim 1, characterized in that: The fixing component (5) includes a fixing post (501), one end of which is fixedly connected to a mounting plate (502). The inner wall of the mounting plate (502) is threadedly connected to a threaded rod (503). One end of the threaded rod (503) passes through the mounting plate (502) and is rotatably connected to a pressure plate (504). The front end of the pressure plate (504) is fixedly connected to a limit rod (505).

5. The polyurethane screen production waste gas treatment device as described in claim 4, characterized in that: The end of the fixed column (501) away from the mounting plate (502) is rotatably connected to the inner wall of the filter box (2).

6. The polyurethane screen production waste gas treatment device as described in claim 4, characterized in that: The rear end of the pressure plate (504) contacts the front end of the fixing plate (15), and the rear end of the fixing plate (15) contacts the surface of the sealing strip (14).

7. The polyurethane screen production waste gas treatment device as described in claim 4, characterized in that: The surface of the limiting rod (505) is slidably connected to the inner wall of the mounting plate (502). There are two limiting rods (505), which are symmetrically distributed with the mounting plate (502) as the center.

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