A waste gas treatment device for fireproof coating production

Abstract

The application discloses a kind of waste gas treatment devices for fireproof paint production, it is related to waste gas treatment technical field, including: processing jar, the surface of processing jar is connected with exhaust fan, the inside of processing jar is provided with spraying device, hollow pipe is fixedly installed in the bottom of the inner wall of processing jar, the surface of hollow pipe is opened with drain, the inside of hollow pipe is provided with double-shaft motor, the bottom output end of double-shaft motor is fixedly installed with U-shaped plate, the bottom of processing jar is fixedly installed with discharge pipe, the bottom of U-shaped plate is fixedly installed with fixed plate, the bottom of fixed plate is fixedly installed with rotary plate, the surface of rotary plate is fixedly installed with fixed block, the surface of fixed block, far from rotary plate, is fixedly installed with arc-shaped plate, the top output end of double-shaft motor is slidably installed with sliding plate, can effectively prevent resin colloid from condensation in drain, affect waste water removal.

Description

Technical Field

[0001] This invention belongs to the field of waste gas treatment, specifically relating to a waste gas treatment device for the production of fire-retardant coatings. Background Technology

[0002] This equipment is a complete set of environmental protection equipment specifically designed for the collection and purification of waste gas from water-based fire-retardant coating workshops. The waste gas will produce resin colloids after treatment.

[0003] Patent publication number CN221432611U relates to a waste gas treatment device for paint production, belonging to the field of waste gas treatment technology for paint production, aiming to solve the problem of waste gas generated during the production process of paint equipment. The key technical points are: a waste gas treatment device for paint production includes a stirring assembly, a treatment cylinder outside the stirring assembly, the treatment cylinder having an annular treatment chamber and an exhaust chamber, the stirring assembly located inside the exhaust chamber, an air vent on the top surface of the exhaust chamber communicating with the treatment chamber, a treatment assembly fixedly connected to the inner peripheral wall of the treatment chamber, and an air outlet assembly detachably connected to the inner peripheral wall of the exhaust chamber, the air outlet of the air outlet assembly communicating with the exhaust chamber and discharging air vertically, and a negative pressure assembly detachably connected to the outer peripheral wall of the treatment cylinder communicating with the treatment chamber, the gas in the exhaust chamber flowing through the treatment assembly and then flowing to the negative pressure assembly, the air outlet assembly and the negative pressure assembly controlling the gas flow, and the treatment assembly treating the waste gas.

[0004] In the prior art, a negative pressure component that communicates with the treatment chamber is detachably connected to the outer peripheral wall of the treatment cylinder. The gas in the exhaust chamber flows through the treatment component and then flows to the negative pressure component. The air outlet component and the negative pressure component control the gas flow. The treatment component treats the exhaust gas. However, when the exhaust gas is continuously introduced into the treatment tank, a large amount of foam is generated. The foam contains a large amount of resin colloid, which can easily cause the drain outlet to be blocked. At the same time, when draining, the air inlet is continuously opened, which will cause the exhaust gas to be discharged from the drain outlet along with the wastewater, resulting in the drain pipe being filled with a large amount of toxic exhaust gas. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this disclosure provides a waste gas treatment device for fire-retardant coating production. According to a first aspect of the present disclosure, a waste gas treatment device for fire-retardant coating production is provided, comprising: a treatment tank, an exhaust fan connected to the surface of the treatment tank, a spraying device disposed inside the treatment tank, a hollow tube fixedly installed at the bottom of the inner wall of the treatment tank, a drain port opened on the surface of the hollow tube, a dual-shaft motor disposed inside the hollow tube, a U-shaped plate fixedly installed at the bottom output end of the dual-shaft motor, a discharge pipe fixedly installed at the bottom of the treatment tank, a fixing plate fixedly installed at the bottom of the U-shaped plate, and a rotating plate fixedly installed at the bottom of the fixing plate. A fixing block is fixedly installed on the surface of the rotating plate. The treatment tank is equipped with A and B agent dosing devices. An arc-shaped plate is fixedly installed on the side of the fixing block away from the rotating plate. A sliding plate is slidably installed on the top output end of the dual-axis motor. A sliding circular plate is fixedly installed on the top of the sliding plate. An inclined slider is fixedly installed on the outer wall of the hollow tube. A groove is opened on the inner wall of the sliding circular plate. A long plate is fixedly installed on the bottom of the sliding circular plate. A scraper is fixedly installed on the bottom of the long plate. When the exhaust fan stops introducing exhaust gas, the dual-axis motor rotates in reverse, which will drive the U-shaped plate to rotate in reverse.

[0006] Optionally, a first spring is provided between the dual-axis motor and the sliding plate. The sliding plate is reset by the elastic force of the first spring itself. The scraper contacts the surface of the arc-shaped plate. The inside of the treatment tank is provided with a collection device and a dosing device for collecting foam.

[0007] Optionally, the collection device includes a circular ring plate, an L-shaped sliding plate, a connecting pipe, a collection frame, and a sealing baffle. The circular ring plate is fixedly installed on the inner wall of the treatment tank, and the L-shaped sliding plate is slidably installed on the inner wall of the treatment tank. One end of the connecting pipe is connected to the treatment tank, and the other end of the connecting pipe is connected to the collection frame. The sealing baffle is fixedly installed at the bottom of the L-shaped sliding plate. When the sealing baffle is reset, it will disengage from the seal on the connecting pipe. At the same time, when the sliding circular plate is reset, it will contact the circular ring plate, separating the wastewater into two layers. The wastewater containing a large amount of foam at the top will be discharged into the collection frame through the connecting pipe, and the wastewater at the bottom will be discharged through the drain outlet.

[0008] Optionally, a sealing plate is fixedly installed on the top of the L-shaped sliding plate, and an L-shaped tube is fixedly installed on the surface of the sealing plate. When the sliding plate moves downward and then opens for drainage, the unsupported L-shaped sliding plate moves downward, which will drive the sealing plate and the L-shaped tube to move downward.

[0009] Optionally, a second spring is provided between the L-shaped sliding plate and the treatment tank. The L-shaped sliding plate is reset by the elastic force of the second spring. The sealing baffle contacts the inner wall of the treatment tank, and the L-shaped sliding plate contacts the surface of the sealing sliding plate.

[0010] Optionally, the dosing device includes a dosing box, a short plate, a feeding pipe, a sliding rod, and a sealing plug. The dosing box is fixedly installed on the surface of the treatment tank, and an inlet hole is opened at the bottom of the dosing box. The short plate is fixedly installed on the surface of the L-shaped sliding plate, and the feeding pipe is fixedly installed at the bottom of the dosing box, with an outlet hole at the bottom of the feeding pipe. The sliding rod slides through the surface of the feeding pipe, and the sealing plug is fixedly installed on the surface of the sliding rod. When the sliding rod moves upward, it will cause the sealing plug to move upward, and the upward movement of the sealing plug will open the outlet hole. Subsequently, the pH adjuster inside the feeding pipe will slowly drip into the treatment tank through the outlet hole without causing a violent reaction.

[0011] Optionally, a connecting rod is fixedly installed on the top of the sealing slide plate, and a sealing ring is rotatably installed on the bottom of the spray device. The sealing ring is used to block the spray nozzle of the spray device. An inclined plate is fixedly installed on the bottom of the sealing ring. When the L-shaped slide plate loses its compression, it will drive the sealing slide plate and the connecting rod to reset. When the connecting rod resets, it will lose its compression on the inclined plate. When the sealing ring resets, it will reseal the spray device.

[0012] Optionally, a No. 3 spring is provided between the sliding rod and the feeding pipe, and the sliding rod is reset by the elastic force of the No. 3 spring itself. A No. 1 torsion spring is provided between the spraying device and the sealing ring, and the sealing ring is reset by the elastic force of the No. 1 torsion spring itself.

[0013] This invention provides a waste gas treatment device for fire-retardant coating production. It has the following beneficial effects: 1. This invention utilizes a dual-axis motor to rotate a U-shaped plate, which blocks the drain outlet to prevent incoming waste gas from being directly discharged through it, thus avoiding the dispersion of waste gas throughout the factory area and causing severe respiratory irritation to workers. After a certain period of time, the exhaust fan stops introducing waste gas, while another exhaust fan introduces the waste gas into another treatment tank for processing. This avoids a large amount of waste gas continuously flowing into one treatment tank, which would generate a lot of foam and affect waste gas treatment. When the exhaust fan stops introducing waste gas, the dual-axis motor rotates in the opposite direction, causing the U-shaped plate to rotate in the opposite direction. The reverse rotation of the U-shaped plate opens the drain outlet, allowing the treated wastewater to be discharged for subsequent processing. By intermittently treating the waste gas, time is given for foam to dissipate, thus improving the waste gas treatment effect.

[0014] 2. This invention utilizes a rotating plate to break up the resin colloid inside the discharge pipe, preventing it from solidifying and clogging the pipe and hindering wastewater discharge. Simultaneously, the dual-axis motor rotates the fixed block and the arc-shaped plate, which in turn blocks the discharge port, preventing resin colloid from blocking it and affecting wastewater discharge. The rotating plate effectively prevents resin colloid from solidifying at the discharge port, thus preventing wastewater discharge. Furthermore, the upward movement of the sliding circular plate moves the long plate and scraper upwards. When drainage begins, the scraper's reset pushes away the resin colloid above the arc-shaped plate, improving drainage efficiency.

[0015] 3. In this invention, the sealing baffle resets and disengages from the connecting pipe, while the sliding circular plate resets and contacts the circular ring plate, separating the wastewater into two layers. The upper layer, containing a large amount of foam, is discharged into the collection frame through the connecting pipe, while the lower layer is discharged through the drain outlet. This prevents the viscous colloids carried by the foam from clogging the drain outlet and affecting the drainage effect. Through layered treatment, the wastewater treatment is improved. The L-shaped exhaust port faces downward to prevent liquid from entering the L-shaped pipe during spraying and affecting normal exhaust. The sealing plate seals the exhaust fan pipe to prevent exhaust gas from continuously entering during drainage and causing exhaust gas to be discharged from the drain outlet along with the wastewater, thus affecting the exhaust gas treatment effect.

[0016] 4. In this invention, the upward movement of the sliding rod causes the sealing plug to move upward, opening the liquid outlet. Subsequently, the pH adjuster inside the feeding pipe will slowly drip into the treatment tank through the liquid outlet without causing a violent reaction. The pH adjuster regulates the wastewater, preventing excessively alkaline water from accelerating the fermentation of organic matter, breeding anaerobic bacteria, and producing a pungent odor. By stabilizing the neutral environment, the reproduction of microorganisms can be slowed down, while also improving the protection of the treatment tank and preventing alkaline water from slowly corroding the treatment tank.

[0017] 5. This invention seals the inlet hole by moving the sliding rod upwards, preventing pH adjuster from entering the feeding pipe through the inlet hole and then being discharged through the outlet hole when the outlet hole is open, thus avoiding a large amount of pH adjuster being discharged at once and wasting resources. Simultaneously, the sliding of the inclined plate away from the connecting rod causes the sealing ring to rotate, opening the spray device. When the sliding plate resets and opens the drainage, the sealing ring resets and re-seals the spray device, preventing viscous colloids in the water vapor rising from the treatment tank from entering the spray device and clogging it, thus affecting the spraying effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of this application; Figure 2 This is a structural schematic diagram of the overall cross-section provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the processing tank and sealing slide provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the sealing slide plate and L-shaped tube provided in the embodiments of this application; Figure 5 This is a structural schematic diagram of the cross-section of a hollow tube provided in an embodiment of this application; Figure 6 This is a structural schematic diagram of the cross-section of the sliding circular plate provided in an embodiment of this application; Figure 7 This is a structural schematic diagram of the cross-section of the feeding pipe provided in an embodiment of this application.

[0019] Figure label: 1. Processing tank; 2. Exhaust fan; 3. Spraying device; 4. Hollow pipe; 5. Drain outlet; 6. Dual-shaft motor; 7. U-shaped plate; 8. Discharge pipe; 9. Fixed plate; 10. Rotating plate; 11. Fixed block; 12. Arc plate; 13. Sliding plate; 14. Sliding circular plate; 15. Inclined slider; 16. Long plate; 17. Scraper; 181. Circular plate; 182. L-shaped sliding plate; 183. Connecting pipe; 184. Collection frame; 185. Sealing baffle; 186. Sealing sliding plate; 187. L-shaped pipe; 191. Dosing box; 192. Short plate; 193. Feeding pipe; 194. Sliding rod; 195. Sealing plug; 196. Connecting rod; 197. Inclined plate; 198. Sealing ring. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0021] Please see Figure 1 - Figure 7One embodiment of the present invention includes: a processing tank 1, a fan 2 connected to the surface of the processing tank 1, a spraying device 3 installed inside the processing tank 1, a hollow tube 4 fixedly installed at the bottom of the inner wall of the processing tank 1, a drain port 5 opened on the surface of the hollow tube 4, a dual-axis motor 6 installed inside the hollow tube 4, a U-shaped plate 7 fixedly installed at the bottom output end of the dual-axis motor 6, a discharge pipe 8 fixedly installed at the bottom of the processing tank 1, a fixing plate 9 fixedly installed at the bottom of the U-shaped plate 7, a rotating plate 10 fixedly installed at the bottom of the fixing plate 9, and a fixing block 11 fixedly installed on the surface of the rotating plate 10. A and B are provided inside the processing tank 1. The agent dosing device has an arc-shaped plate 12 fixedly installed on the side of the fixed block 11 away from the rotating plate 10. A sliding plate 13 is slidably installed on the top output end of the dual-axis motor 6. A sliding circular plate 14 is fixedly installed on the top of the sliding plate 13. An inclined slider 15 is fixedly installed on the outer wall of the hollow tube 4. A groove is opened on the inner wall of the sliding circular plate 14. A long plate 16 is fixedly installed at the bottom of the sliding circular plate 14. A scraper 17 is fixedly installed at the bottom of the long plate 16. When the U-shaped plate 7 rotates in the opposite direction, it will open the drain port 5 to discharge the treated wastewater for subsequent treatment. By intermittently treating the waste gas, time for foam elimination is given, thereby improving the waste gas treatment effect.

[0022] A first spring is provided between the dual-axis motor 6 and the sliding plate 13. The sliding plate 13 is reset by the elastic force of the first spring itself. The scraper 17 contacts the surface of the arc plate 12. The treatment tank 1 is equipped with a collection device and a dosing device for collecting foam.

[0023] In this embodiment, during operation: the exhaust gas generated during the production of fire-retardant coatings is introduced into the treatment tank 1 by the exhaust fan 2, and then the fine powder is captured by the spray device 3 through water washing, cooling and dehumidification. When the exhaust fan 2 starts, the dual-shaft motor 6 starts synchronously. The rotation of the dual-shaft motor 6 drives the U-shaped plate 7 to rotate 90 degrees. The rotation of the U-shaped plate 7 blocks the drain port 5, preventing the exhaust gas from being directly discharged through the drain port 5, which would cause the exhaust gas to diffuse in the factory area and cause severe respiratory irritation to workers. After the exhaust gas has been introduced for a certain period of time, the exhaust fan 2... The system will stop introducing exhaust gas, and simultaneously, another exhaust fan 2 will introduce the exhaust gas into another treatment tank 1 for processing. This prevents a large amount of exhaust gas from continuously flowing into one treatment tank 1, which would cause excessive foaming and affect exhaust gas treatment. When exhaust fan 2 stops introducing exhaust gas, the dual-shaft motor 6 will rotate in reverse, causing the U-shaped plate 7 to rotate in reverse. The reverse rotation of the U-shaped plate 7 will open the drain port 5, draining the treated wastewater for subsequent processing. By intermittently treating the exhaust gas, time is given for foam to dissipate, improving the exhaust gas treatment effect. When the U-shaped plate 7 rotates, it drives the fixed plate 9 to rotate, which in turn drives the rotating plate 10 to rotate. The rotating plate 10 breaks up the resin colloid inside the discharge pipe 8, preventing it from solidifying and clogging the pipe and hindering wastewater discharge. Simultaneously, the dual-axis motor 6 rotates, driving the fixed block 11 and the arc-shaped plate 12 to rotate. The arc-shaped plate 12 blocks the drain outlet 5, preventing the resin colloid from clogging it and affecting wastewater discharge. This process is achieved through the rotating plate 10. The shielding effectively prevents the resin colloid from condensing at the drain outlet 5, thus affecting wastewater discharge. At the same time, the rotation of the dual-axis motor 6 drives the sliding plate 13 and the sliding circular plate 14 to rotate. The rotation of the sliding circular plate 14 drives the chute to rotate. The rotation of the chute is blocked by the inclined slider 15, causing the sliding circular plate 14 to move upward during rotation. The upward movement of the sliding circular plate 14 drives the long plate 16 and the scraper 17 to move upward. When drainage begins, the scraper 17 resets and pushes away the resin colloid above the arc plate 12, improving drainage efficiency.

[0024] Please see Figure 1 - Figure 7 Based on the above embodiments, in another embodiment of the present invention, the collection device includes a circular ring plate 181, an L-shaped sliding plate 182, a connecting pipe 183, a collection frame 184, and a sealing baffle 185. The circular ring plate 181 is fixedly installed on the inner wall of the treatment tank 1, the L-shaped sliding plate 182 is slidably installed on the inner wall of the treatment tank 1, one end of the connecting pipe 183 is connected to the treatment tank 1, and the other end of the connecting pipe 183 is connected to the collection frame 184. The sealing baffle 185 is fixedly installed at the bottom of the L-shaped sliding plate 182 to prevent the viscous colloid carried by the foam from blocking the drain outlet 5 when it is discharged with the wastewater, thus affecting the drainage effect. Through stratified treatment, the treatment of wastewater is improved.

[0025] A sealing plate 186 is fixedly installed on the top of the L-shaped sliding plate 182. An L-shaped pipe 187 is fixedly installed on the surface of the sealing plate 186. The sealing plate 186 seals the exhaust fan 2 pipe to prevent exhaust gas from continuously entering during drainage, causing the exhaust gas to be discharged from the drain port 5 along with the wastewater, thus affecting the exhaust gas treatment effect.

[0026] A second spring is provided between the L-shaped slide plate 182 and the treatment tank 1. The L-shaped slide plate 182 is reset by the elastic force of the second spring itself, the sealing baffle 185 contacts the inner wall of the treatment tank 1, and the L-shaped slide plate 182 contacts the surface of the sealing slide plate 186.

[0027] In this embodiment, during operation: the upward movement of the sliding circular plate 14 pushes the L-shaped slide plate 182 upward, which in turn moves the sealing baffle 185 upward, sealing the connecting pipe 183. Then, when the wastewater is level with the sliding circular plate 14, the reverse rotation of the dual-axis motor 6 resets the sliding circular plate 14. The downward movement of the sliding circular plate 14 disengages from the support of the L-shaped slide plate 182, and the elastic force of the second spring causes the L-shaped slide plate 182 and the sealing baffle 185 to reset. The reset of the sealing baffle 185 disengages from the seal on the connecting pipe 183. Simultaneously, the reset sliding circular plate 14 contacts the annular plate 181, separating the wastewater into two layers. The upper layer, containing a large amount of foam, is discharged into the collection frame 184 through the connecting pipe 183, while the lower layer is discharged through the drain port 5, preventing... When the viscous colloid carried by the foam is discharged with the wastewater, it blocks the drain outlet 5, affecting the drainage effect. Through stratified treatment, the wastewater treatment is improved. At the same time, when the L-shaped slide plate 182 moves upward, it will drive the sealing slide plate 186 to move upward. When the sealing slide plate 186 moves upward, it will coincide with the exhaust fan 2 pipe. Then the exhaust gas will be discharged through the L-shaped pipe 187. The exhaust port of the L-shaped pipe 187 faces downward to prevent liquid from entering the L-shaped pipe 187 during spraying and affecting normal exhaust. At the same time, when the sliding circular plate 14 moves downward and then opens the drainage, the unsupported L-shaped slide plate 182 moves downward, which will drive the sealing slide plate 186 and the L-shaped pipe 187 to move downward. The sealing slide plate 186 seals the exhaust fan 2 pipe to prevent exhaust gas from continuously entering during drainage, causing the exhaust gas to be discharged from the drain outlet 5 with the wastewater, which would affect the exhaust gas treatment effect.

[0028] The dosing device includes a dosing box 191, a short plate 192, a feeding pipe 193, a sliding rod 194, and a sealing plug 195. The dosing box 191 is fixedly installed on the surface of the treatment tank 1, and an inlet hole is opened at the bottom of the dosing box 191. The short plate 192 is fixedly installed on the surface of the L-shaped sliding plate 182. The feeding pipe 193 is fixedly installed at the bottom of the dosing box 191, and an outlet hole is opened at the bottom of the feeding pipe 193. The sliding rod 194 slides through the surface of the feeding pipe 193, and the sealing plug 195 is fixedly installed on the surface of the sliding rod 194. The wastewater is adjusted by pH adjusting agent to prevent excessively alkaline water from accelerating the fermentation of organic matter, breeding anaerobic bacteria, and producing a pungent odor. A stable neutral environment can slow down the reproduction of microorganisms.

[0029] A connecting rod 196 is fixedly installed on the top of the sealing slide plate 186, and a sealing ring 198 is rotatably installed on the bottom of the spray device 3. The sealing ring 198 is used to block the spray nozzle of the spray device 3. An inclined plate 197 is fixedly installed on the bottom of the sealing ring 198 to prevent the viscous colloid in the water vapor inside the treatment tank 1 from entering the interior of the spray device 3 when the water vapor inside the treatment tank 1 rises, thus blocking the spray device 3 and affecting the spraying effect.

[0030] A No. 3 spring is installed between the sliding rod 194 and the feeding pipe 193. The sliding rod 194 is reset by the elastic force of the No. 3 spring. A No. 1 torsion spring is installed between the spray device 3 and the sealing ring 198. The sealing ring 198 is reset by the elastic force of the No. 1 torsion spring.

[0031] The upward movement of the L-shaped sliding plate 182 causes the short plate 192 to move upward, which in turn pushes the sliding rod 194 upward. The upward movement of the sliding rod 194 then causes the sealing plug 195 to move upward, opening the outlet. Subsequently, the pH adjuster inside the feeding pipe 193 slowly drips into the treatment tank 1 through the outlet without causing a violent reaction. The pH adjuster regulates the wastewater, preventing excessive alkalinity from accelerating organic matter fermentation, promoting anaerobic bacteria growth, and producing a pungent odor. Maintaining a stable neutral environment slows microbial growth and enhances the protection of the treatment tank 1, preventing the alkaline water from slowly corroding it. Simultaneously, the upward movement of the sliding rod 194 seals the inlet, preventing the pH adjuster inside the dosing tank 191 from entering the feeding pipe 193 through the inlet and then being discharged through the outlet, thus preventing a large amount of pH adjuster from being discharged at once. The regulator causes resource waste. At the same time, the upward movement of the sealing slide plate 186 will drive the connecting rod 196 to move upward. The upward movement of the connecting rod 196 will contact the inclined surface of the inclined plate 197. The connecting rod 196 will slide against the inclined plate 197 in a direction away from the connecting rod 196. The sliding of the inclined plate 197 in a direction away from the connecting rod 196 will drive the sealing ring 198 to rotate. The rotation of the sealing ring 198 will open the spray device 3. When the sliding circular plate 14 resets and opens the drainage, the L-shaped slide plate 182 loses its compression and will drive the sealing slide plate 186 and the connecting rod 196 to reset. The reset of the connecting rod 196 will lose its compression on the inclined plate 197. Subsequently, the elastic force of the first torsion spring will drive the sealing ring 198 to reset. The reset of the sealing ring 198 will reseal the spray device 3 to prevent the viscous colloid in the water vapor inside the treatment tank 1 from entering the spray device 3 when it floats upward, blocking the spray device 3 and affecting the spraying effect.

[0032] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and application concept of this application, should be included within the scope of protection of this application.

Claims

1. A waste gas treatment device for fire-retardant coating production, comprising: A treatment tank (1) is provided with an exhaust fan (2) connected to its surface and a spraying device (3) is provided inside the treatment tank (1). The tank is characterized by: A hollow tube (4) is fixedly installed at the bottom of the inner wall of the treatment tank (1). A drain port (5) is opened on the surface of the hollow tube (4). A dual-axis motor (6) is installed inside the hollow tube (4). A U-shaped plate (7) is fixedly installed at the bottom output end of the dual-axis motor (6). A discharge pipe (8) is fixedly installed at the bottom of the treatment tank (1). An A and B agent dosing device is installed inside the treatment tank (1). A fixing plate (9) is fixedly installed at the bottom of the U-shaped plate (7). A rotating plate (10) is fixedly installed at the bottom of the fixing plate (9). A fixing block (11) is fixedly installed on the surface of the tube (4). An arc plate (12) is fixedly installed on the side of the fixing block (11) away from the rotating plate (10). A sliding plate (13) is slidably installed on the top output end of the dual-axis motor (6). A sliding circular plate (14) is fixedly installed on the top of the sliding plate (13). An inclined slider (15) is fixedly installed on the outer wall of the hollow tube (4). A groove is opened on the inner wall of the sliding circular plate (14). A long plate (16) is fixedly installed on the bottom of the sliding circular plate (14). A scraper (17) is fixedly installed on the bottom of the long plate (16).

2. The waste gas treatment device for fire-retardant coating production according to claim 1, characterized in that, A first spring is provided between the dual-axis motor (6) and the sliding plate (13), the scraper (17) is in contact with the surface of the arc plate (12), and the processing tank (1) is provided with a collection device and a dosing device for collecting foam.

3. The waste gas treatment device for fire-retardant coating production according to claim 2, characterized in that, The collection device includes a circular ring plate (181), an L-shaped sliding plate (182), a connecting pipe (183), a collection frame (184), and a sealing baffle (185). The circular ring plate (181) is fixedly installed on the inner wall of the processing tank (1), the L-shaped sliding plate (182) is slidably installed on the inner wall of the processing tank (1), one end of the connecting pipe (183) is connected to the processing tank (1), the other end of the connecting pipe (183) is connected to the collection frame (184), and the sealing baffle (185) is fixedly installed at the bottom of the L-shaped sliding plate (182).

4. The waste gas treatment device for fire-retardant coating production according to claim 3, characterized in that, A sealing plate (186) is fixedly installed on the top of the L-shaped sliding plate (182), and an L-shaped tube (187) is fixedly installed on the surface of the sealing plate (186).

5. The waste gas treatment device for fire-retardant coating production according to claim 4, characterized in that, A second spring is provided between the L-shaped sliding plate (182) and the processing tank (1), the sealing baffle (185) contacts the inner wall of the processing tank (1), and the L-shaped sliding plate (182) contacts the surface of the sealing sliding plate (186).

6. The waste gas treatment device for fire-retardant coating production according to claim 5, characterized in that, The dosing device includes a dosing box (191), a short plate (192), a feeding pipe (193), a sliding rod (194), and a sealing plug (195). The dosing box (191) is fixedly installed on the surface of the treatment tank (1). The bottom of the dosing box (191) has a liquid inlet hole. The short plate (192) is fixedly installed on the surface of the L-shaped sliding plate (182). The feeding pipe (193) is fixedly installed on the bottom of the dosing box (191). The bottom of the feeding pipe (193) has a liquid outlet hole. The sliding rod (194) slides through the surface of the feeding pipe (193). The sealing plug (195) is fixedly installed on the surface of the sliding rod (194).

7. The waste gas treatment device for fire-retardant coating production according to claim 6, characterized in that, A connecting rod (196) is fixedly installed on the top of the sealing slide plate (186), and a sealing ring (198) is rotatably installed on the bottom of the spray device (3). The sealing ring (198) is used to block the spray nozzle of the spray device (3), and an inclined plate (197) is fixedly installed on the bottom of the sealing ring (198).

8. The waste gas treatment device for fire-retardant coating production according to claim 7, characterized in that, A No. 3 spring is provided between the sliding rod (194) and the feeding pipe (193), and a No. 1 torsion spring is provided between the spraying device (3) and the sealing ring (198).

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