Waste gas purification treatment device for spray booth

Abstract

The waste gas purification treatment device comprises a supporting shell, one end of the supporting shell is provided with an air inlet, a flow guide cavity is formed in the position, close to the air inlet, in the supporting shell, and two sets of air outlet cavities communicated with the flow guide cavity are horizontally formed in the supporting shell; an adjustable sealing plate and a detachable activated carbon adsorption screen plate are sealed in the air outlet cavity; a pressure difference sensor and an alarm are installed at the position, located above the air outlet cavity, of the top of the supporting shell, a controller is further arranged at the top of one side of the supporting shell, and the pressure difference sensor, the alarm and the controller are electrically connected. The utility model belongs to the technical field of waste gas purification of a spray booth, and particularly relates to a waste gas purification treatment device for a spray booth.

Description

Technical Field

[0001] This utility model belongs to the field of exhaust gas purification technology for paint booths, specifically referring to an exhaust gas purification and treatment device for paint booths. Background Technology

[0002] Waste gas is generated during spray painting and baking processes. The common treatment method is activated carbon adsorption, which utilizes the porous structure of activated carbon to adsorb pollutants in the waste gas, thereby purifying it. However, this traditional treatment method has obvious drawbacks.

[0003] As the adsorption process continues, the activated carbon adsorption mesh will gradually become saturated, and its adsorption capacity will decrease significantly. If it is not replaced in time after becoming saturated, the purification effect of the exhaust gas will be greatly reduced, resulting in pollutants being directly emitted into the environment and causing pollution to the atmospheric environment.

[0004] However, in practice, due to the lack of an effective monitoring and alerting mechanism, staff often cannot accurately determine the saturation state of the activated carbon adsorption mesh, and therefore cannot replace it in a timely manner. Furthermore, the entire waste gas purification process must be interrupted when replacing the activated carbon adsorption mesh, meaning that the waste gas cannot be effectively purified during the replacement period, significantly reducing the working efficiency of the paint spraying booth. Utility Model Content

[0005] In view of the above situation and to overcome the shortcomings of the existing technology, this utility model provides a waste gas purification and treatment device for spray painting booths, which effectively solves the problems of lacking an effective monitoring and reminder mechanism and interrupting the waste gas purification and treatment process when replacing the carbon adsorption screen.

[0006] To achieve the above functions, the technical solution adopted by this utility model is as follows: a waste gas purification and treatment device for a spray painting booth, including a supporting shell, an air inlet at one end of the supporting shell, a guide cavity near the air inlet inside the supporting shell, two sets of air outlet chambers connected to the guide cavity horizontally arranged inside the supporting shell, and an adjustable sealing plate and a detachable activated carbon adsorption mesh plate sealed inside the air outlet chamber.

[0007] Differential pressure sensors and alarms are installed on the top of the support housing above the air outlet chamber. A controller is also installed on the top of one side of the support housing. The differential pressure sensors, alarms and controllers are electrically connected. The high-pressure interface of the differential pressure sensor is connected to the top of the air outlet chamber on the side of the activated carbon adsorption mesh plate in the air inlet direction, and the low-pressure interface is connected to the top of the air outlet chamber on the other side of the activated carbon adsorption mesh plate. The sensor monitors the resistance change of the activated carbon adsorption mesh plate in real time to determine the saturation state and triggers the alarm to remind the staff to replace the activated carbon adsorption mesh plate and perform other operations.

[0008] Preferably, a U-shaped connecting frame is fixedly connected to the top of the sealing plate, a rack is provided on the top and bottom surfaces of the connecting frame, an mounting plate is fixedly fixed on the top surface of the support housing, a motor is fixedly mounted on the mounting plate, a gear is fixedly connected to the output end of the motor, and the gear and rack are meshed.

[0009] Preferably, the motor is a servo motor, and the motor and the controller are electrically connected.

[0010] Preferably, the flow guiding cavity has a conical structure.

[0011] Preferably, a connecting plate is fixed to the top of the activated carbon adsorption mesh plate, and a fixing post is horizontally inserted through the connecting plate and fixed to the outer side of the supporting shell. The fixing post is provided with a U-shaped groove, and a through hole is provided at the connection between the groove and the outer side of the fixing post. A limiting post is inserted through the through hole, and one end of the limiting post is a sleeve block that abuts against the inner side of the groove. The other end of the limiting post extends to the outer side of the fixing post and is pressed against the outer side of the connecting plate.

[0012] Preferably, two sets of horizontal limiting rods are also fixed on the inner side of the groove. The end of the limiting rod away from the inner wall of the groove passes through the sleeve block and slides relative to it. A spring is provided on the outer side of the limiting rod. One end of the spring is fixed on the inner side of the groove, and the other end of the spring is fixed on the outer side of the sleeve block.

[0013] Preferably, the connecting plate is further provided with a second through hole for the fixing post to pass through.

[0014] The beneficial effects achieved by adopting the above-described structure are as follows:

[0015] 1. By setting up two sets of air outlet chambers and corresponding activated carbon adsorption plates, the adsorption plates can be used alternately. When one set of adsorption plates needs to be replaced, the other set can be switched to continue the exhaust gas purification work, effectively avoiding the interruption of purification caused by the replacement of adsorption plates, ensuring the continuity of exhaust gas purification work in the spray painting booth, greatly improving the overall work efficiency, enabling the spray painting operation to be carried out continuously and stably, and reducing production delays and economic losses caused by downtime.

[0016] 2. Differential pressure sensors are installed on both sides of the activated carbon adsorption mesh before and after the gas outlet chamber to monitor the adsorption status of the activated carbon adsorption mesh in real time. As pollutants accumulate on the activated carbon during the adsorption process, the pressure difference before and after the adsorption mesh will gradually change. When the pressure difference reaches the set saturation threshold, the system automatically activates the alarm to promptly remind staff that the activated carbon adsorption mesh is close to saturation and needs to be replaced. This precise monitoring and reminder mechanism effectively solves the problem of purification failure caused by the inability to promptly know the saturation status of the adsorption mesh in traditional treatment methods, ensuring that the waste gas purification effect is always in good condition, reducing pollutant emissions, and meeting environmental protection requirements.

[0017] 3. Both sets of activated carbon adsorption screens in the exhaust chambers are designed to be detachable, allowing for quick and convenient replacement by operators. Simultaneously, the adjustable sealing plate ensures that exhaust gas passes only through the active adsorption screen when switching exhaust chambers, further improving the reliability and stability of the device. This design not only reduces the workload of operators but also shortens the time required for adsorption screen replacement, contributing to improved overall operating efficiency of the paint spraying booth. Attached Figure Description

[0018] Figure 1 This utility model presents a schematic diagram of the overall structure of a waste gas purification and treatment device for a spray painting booth. Figure 1 ;

[0019] Figure 2 This utility model presents a schematic diagram of the overall structure of a waste gas purification and treatment device for a spray painting booth. Figure 2 ;

[0020] Figure 3 A cross-sectional view of a waste gas purification and treatment device for a spray painting booth proposed in this utility model. Figure 1 ;

[0021] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0022] Figure 5 A cross-sectional view of a waste gas purification and treatment device for a spray painting booth proposed in this utility model. Figure 2 ;

[0023] Figure 6 This is a side view of a waste gas purification and treatment device for a spray painting booth proposed in this utility model;

[0024] Figure 7 for Figure 6 A magnified view of a section at point B.

[0025] The components are as follows: 1. Support shell, 2. Air inlet, 3. Flow guide cavity, 4. Air outlet, 5. Activated carbon adsorption mesh, 6. Differential pressure sensor, 7. Alarm, 8. Controller, 9. Connecting frame, 10. Rack, 11. Mounting plate, 12. Motor, 13. Gear, 14. Connecting plate, 15. Fixing column, 16. Groove, 17. Perforation 1, 18. Limiting column, 19. Sleeve block, 20. Limiting rod, 21. Spring, 22. Perforation 2, 23. Sealing plate. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-7 As shown, the present invention proposes a waste gas purification and treatment device for a spray painting booth, including a support shell 1, an air inlet 2 at one end of the support shell 1, a guide cavity 3 near the air inlet 2 inside the support shell 1, the guide cavity 3 having a conical structure to facilitate gas diffusion, and two sets of air outlet cavities 4 horizontally arranged inside the support shell 1 and connected to the guide cavity 3, the air outlet cavities 4 being sealed with an adjustable sealing plate 23 and a detachable activated carbon adsorption mesh plate 5;

[0029] like Figure 1 , 2 As shown in Figures 3 and 5, a differential pressure sensor 6 and an alarm 7 are installed on the top of the support housing 1 above the air outlet chamber 4. A controller 8 is also installed on the top of one side of the support housing 1. The differential pressure sensor 6, the alarm 7 and the controller 8 are electrically connected. The high-pressure interface of the differential pressure sensor 6 is connected to the top of the air outlet chamber 4 on the side of the activated carbon adsorption mesh plate 5 in the air inlet direction, and the low-pressure interface is connected to the top of the air outlet chamber 4 on the other side of the activated carbon adsorption mesh plate 5. This allows for real-time monitoring of the resistance changes of the activated carbon adsorption mesh plate 5. When the activated carbon adsorption mesh plate 5 becomes saturated or blocked, causing the pressure difference to exceed the set threshold, the controller 8 triggers the alarm 7 to remind the staff to replace the activated carbon adsorption mesh plate and perform other operations.

[0030] like Figure 4As shown, a U-shaped connecting frame 9 is fixedly connected to the top of the sealing plate 23. A rack 10 is provided on the top and bottom surfaces of the connecting frame 9. An mounting plate 11 is fixedly fixed on the top surface of the support housing 1. A motor 12 is fixedly mounted on the mounting plate 11. A gear 13 is fixedly connected to the output end of the motor 12. The gear 13 and the rack 10 are meshed. The motor 12 drives the gear 13 to rotate. The gear 13 drives the rack 10 and the connecting frame 9 to move. The connecting frame 9 drives the sealing plate 23 to move. The sealing plate 23 seals and opens the exhaust chamber 4, which facilitates switching the exhaust chamber 4 and ensures that the exhaust gas only passes through the working adsorption screen. The motor 12 is a servo motor 12. The motor 12 and the controller 8 are electrically connected. The controller 8 drives the motor 12 to rotate, which drives the sealing plate 23 to switch the exhaust chamber 4.

[0031] like Figure 7 As shown, a connecting plate 14 is fixed to the top of the activated carbon adsorption mesh plate 5. A fixing post 15 is horizontally inserted through the connecting plate 14 and fixed to the outer side of the supporting shell 1. The connecting plate 14 is also provided with a second through hole 22 for the fixing post 15 to pass through. The fixing post 15 is provided with a U-shaped groove 16. A first through hole 17 is provided at the connection between the groove 16 and the outer side of the fixing post 15. A limiting post 18 is inserted into the first through hole 17. One end of the limiting post 18 is abutted against a sleeve block 19 on the inner side of the groove 16. The other end of the limiting post 18 extends to the outer side of the fixing post 15 and is pressed against the connecting plate 14. On the outer side of the connecting plate 14, the connecting plate 14 is limited. Two sets of horizontal limiting rods 20 are also fixed on the inner side of the groove 16. The end of the limiting rod 20 away from the inner wall of the groove 16 passes through the sleeve block 19 and slides relative to it. A spring 21 is provided on the outer sleeve of the limiting rod 20. One end of the spring 21 is fixed on the inner side of the groove 16, and the other end of the spring 21 is fixed on the outer side of the sleeve block 19. Pressing the limiting post 18 causes the sleeve block 19 to move relative to the limiting groove. The spring 21 is compressed, and the limiting post 18 is moved into the through hole 17. The connecting plate 14 can then be taken out.

[0032] In practical use, the exhaust gas generated by the spray painting booth enters the guide cavity 3 through the air inlet 2, and then passes through one of the sets of exhaust cavities 4. When the exhaust gas passes through the activated carbon adsorption mesh plate 5 in the exhaust cavity 4, the pollutants in it are adsorbed by the activated carbon, and the purified gas is discharged from the outlet of the exhaust cavity 4.

[0033] During normal operation, two sets of differential pressure sensors 6 monitor the pressure difference across the activated carbon adsorption mesh 5 in real time and transmit the data to the controller 8. When one set of activated carbon adsorption mesh 5 reaches saturation, the pressure difference across it gradually increases. When the pressure difference reaches a preset saturation threshold, the controller 8 receives a signal from the differential pressure sensor 6 and immediately activates the alarm 7 to remind staff to replace the activated carbon adsorption mesh 5. Simultaneously, the controller 8 drives the motor 12, which in turn drives the gear 13 to rotate. The moving rack 10 and connecting frame 9 move, and the connecting frame 9 drives the sealing plate 23 to move, blocking the saturated exhaust chamber 4. At the same time, another set of exhaust chambers 4 is opened, so that the exhaust gas enters the new exhaust chamber 4 for purification. In the blocked exhaust chamber 4, the staff can easily remove the saturated activated carbon adsorption screen 5 and replace it with a new adsorption screen for subsequent alternating use. Throughout the process, the alternating operation of the two sets of exhaust chambers 4 ensures the continuity of exhaust gas purification and effectively improves the working efficiency and exhaust gas purification effect of the spray painting booth.

[0034] When disassembling the activated carbon adsorption mesh plate 5, the squeezing limit post 18 causes the sleeve block 19 to move relative to the limit groove, the spring 21 is compressed, the limit post 18 is moved into the perforation 17, and the connecting plate 14 and the activated carbon adsorption mesh plate 5 can be taken out together.

[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A waste gas purification and treatment device for a spray painting booth, characterized in that: Includes a support housing (1), one end of which is provided with an air inlet (2), and a flow guide cavity (3) is provided inside the support housing (1) near the air inlet (2). Two sets of air outlet cavities (4) connected to the flow guide cavity (3) are horizontally provided inside the support housing (1). An adjustable sealing plate (23) and a detachable activated carbon adsorption mesh plate (5) are sealed inside the air outlet cavities (4). A differential pressure sensor (6) and an alarm (7) are installed on the top of the support housing (1) above the air outlet chamber (4). A controller (8) is also provided on the top of one side of the support housing (1). The differential pressure sensor (6), the alarm (7) and the controller (8) are electrically connected. The high-pressure interface of the differential pressure sensor (6) is connected to the top of the air outlet chamber (4) on the side of the activated carbon adsorption mesh plate (5) in the air inlet direction, and the low-pressure interface is connected to the top of the air outlet chamber (4) on the other side of the activated carbon adsorption mesh plate (5). The sensor monitors the resistance change of the activated carbon adsorption mesh plate (5) in real time to determine the saturation state and triggers the alarm (7) to remind the staff to replace the activated carbon adsorption mesh plate (5) and perform other operations.

2. The waste gas purification treatment device for a spray booth according to claim 1, characterized by: A U-shaped connecting frame (9) is fixedly connected to the top of the sealing plate (23). A rack (10) is provided on the top bottom surface of the connecting frame (9). An mounting plate (11) is fixedly fixed on the top surface of the support housing (1). A motor (12) is fixedly installed on the mounting plate (11). A gear (13) is fixedly connected to the output end of the motor (12). The gear (13) and the rack (10) are meshed.

3. The exhaust gas purification and treatment device for a spray painting booth according to claim 2, characterized in that: The motor (12) is a servo motor (12), and the motor (12) is electrically connected to the controller (8).

4. The waste gas purification treatment device for a spray booth according to claim 1, characterized by: The flow guide cavity (3) has a conical structure.

5. The waste gas purification treatment device for a spray booth according to claim 1, characterized by: A connecting plate (14) is fixed to the top of the activated carbon adsorption mesh plate (5). A fixing column (15) is horizontally inserted through the connecting plate (14) and fixed to the outer side of the supporting shell (1). A U-shaped groove (16) is provided on the fixing column (15). A through hole (17) is provided at the connection between the groove (16) and the outer side of the fixing column (15). A limiting column (18) is inserted through the through hole (17). One end of the limiting column (18) is abutted against the sleeve block (19) on the inner side of the groove (16). The other end of the limiting column (18) extends to the outer side of the fixing column (15) and is pressed against the outer side of the connecting plate (14).

6. The exhaust gas purification device for a spray booth according to claim 5, wherein: Two sets of horizontal limiting rods (20) are also fixed on the inner side of the groove (16). The end of the limiting rod (20) away from the inner wall of the groove (16) passes through the sleeve block (19) and slides relative to it. The limiting rod (20) is covered with a spring (21). One end of the spring (21) is fixed on the inner side of the groove (16), and the other end of the spring (21) is fixed on the outer side of the sleeve block (19).

7. The exhaust gas purification and treatment device for a spray painting booth according to claim 5, characterized in that: The connecting plate (14) is also provided with a through hole (22) for the fixing post (15) to pass through.

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