Paint mist treatment and purification device and method for painting workshop

Abstract

The invention relates to the field of paint mist treatment and purification, and discloses a spraying workshop paint mist treatment and purification device and a method thereof.The spraying workshop paint mist treatment and purification device comprises a water filtering part and a collecting part, the collecting part is movably connected to one end of the water filtering part, and a cleaning part is arranged in the water filtering part; a flow guide part is fixedly mounted on one side edge of the upper part of the water filtering part; the water filtering part is used for receiving and filtering the discharged paint mist and driving the cleaning part to clean paint slag filtered in the water filtering part; through cooperative operation of the water filtering component, the collecting component, the cleaning component and the flow guiding component, paint mist water can be filtered in time, the paint slag can be automatically cleaned, and the paint slag cleaning device is high in practicability, convenient to use and high in practicability. The continuous and normal operation of the paint mist treatment and purification device in the painting workshop is ensured, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The present invention relates to the field of paint mist treatment and purification, and in particular to a paint mist treatment and purification device for a spraying workshop and a method thereof. Background Art In modern industrial spraying production, the treatment of paint mist generated in the spraying workshop is crucial. Currently, using a water curtain cabinet to collect excess paint mist during the spraying process is a relatively common and mature treatment method.

[0002] It uses water curtain to intercept and absorb paint mist, which can effectively reduce the spread of paint mist in the workshop and ensure the safety of the working environment and the health of workers.

[0003] However, existing paint mist water curtain cabinets have significant technical shortcomings in actual operation. While they can effectively filter paint mist and intercept it to form paint residue, they lack a functional module to automatically remove the filtered paint residue. As production continues, paint residue continues to accumulate inside the water curtain cabinet, causing the cabinet's filtration performance to decline and affecting the paint mist treatment effect. To maintain normal equipment operation and treatment efficiency, workers still need to spend a lot of time and energy cleaning up paint residue after a day of high-intensity work. This not only increases labor intensity but also reduces work efficiency. There is also the potential risk of shortening the equipment's service life due to untimely cleaning. This has become a key issue hindering the efficient production and intelligent development of spray painting workshops. Summary of the Invention

[0004] The purpose of the present invention is to provide a paint mist treatment and purification device and method for a spraying workshop to solve the following technical problems: Currently, when spraying workshops mostly use water curtain cabinets to treat paint mist, the paint residue cannot be automatically removed and needs to be cleaned manually after get off work, which affects efficiency.

[0005] The object of the present invention can be achieved by the following technical solution: A paint mist treatment and purification device for a spray painting workshop, comprising: a water filter component and a collection component, the collection component being movably connected to one end of the water filter component, a cleaning component being provided inside the water filter component, and a flow guide component being fixedly installed on one side of the upper portion of the water filter component; The water filter component is used to receive and filter the discharged paint mist water, and drive the cleaning component to clean the paint residue filtered inside the water filter component; The collecting component is used to collect the paint residue scraped out by the cleaning component and can scrape off the paint residue on the surface of the cleaning component; The cleaning component is used to clean the paint residue filtered inside the water filtering component and clean the inner surface of the water filtering component at the same time; the diversion component is used to divert and transport the paint water.

[0006] As a preferred solution of the present invention: the water filtering component includes a water tank, a wedge-shaped water filter plate is obliquely arranged inside the water tank, a water supply interface is provided at the top middle portion of one side of the water tank, the bottom end of the water supply interface is symmetrically fixedly connected to a water pipe plugged into the inside of the water tank, the upper parts of both ends of the wedge-shaped water filter plate are rotatably clamped with a transmission shaft, a driving motor is fixedly installed on the top side of one end of the water tank, the bottom end of the driving motor and the outer surface of one end of the transmission shaft are fixedly installed with a bevel gear, a control box is fixedly installed on one end face of the water tank, a transmission belt is sleeved on the outer surface of the transmission shaft, a water filter chamber is provided inside the water tank, the inner bottom end of the water filter chamber is provided with grooves, and the inner surfaces of both sides of the wedge-shaped water filter plate are provided with transmission tooth grooves.

[0007] As a preferred solution of the present invention: the collecting component includes a slag collecting box, a sealing plate is rotatably installed on the rear end face of the slag collecting box, a positioning bracket is inserted into the top of the slag collecting box and above the sealing plate, and the outer surfaces of both ends of the positioning bracket are solidly sleeved with a first traction spring, and a scraping plate is rotatably installed at one end of the interior of the slag collecting box away from the sealing plate, a limiting strip is provided inside the slag collecting box and above the scraping plate, and the bottom surfaces of both ends of the scraping plate are fixedly connected to a second traction spring, and a wedge-shaped opening is provided on the front end face of the slag collecting box.

[0008] As a preferred solution of the present invention: the cleaning component includes a slag cleaning plate, the top of the slag cleaning plate is symmetrically provided with a clamping groove, the inner bottom surface of the clamping groove is provided with a threaded hole, and the bottom sides of the side of the slag cleaning plate are symmetrically rotated and clamped with a cleaning shaft, the top end of the cleaning shaft is fixedly installed with a transmission gear, and the top end of the slag cleaning plate is rotatably connected to a water blocking slide.

[0009] As a preferred solution of the present invention: the flow guide component includes a water guide frame, water baffles are evenly arranged inside the water guide frame, and a drainage outlet is opened on the bottom side of the water guide frame.

[0010] As a preferred solution of the present invention: the water supply interface is aligned with the groove through the water pipe at the bottom, the driving motor is meshed with one end of the transmission shaft through a bevel gear, the outer surface of the transmission belt is connected with a fastening screw, the slag cleaning plate is fastened to the fastening screw on the outer surface of the transmission belt through a threaded hole, the bottom of the slag cleaning plate is movable and slidingly abuts against the inner surface of the wedge-shaped water filter plate, the cleaning shaft is meshed with the transmission tooth groove on the inner surface of the wedge-shaped water filter plate through a transmission gear, the slag cleaning plate is slidably engaged with the drain outlet through a water blocking slide, the connection points of the outer surface of the water blocking slide and the slag cleaning plate are seven to three, and the side close to the cleaning shaft is shorter.

[0011] As a preferred solution of the present invention: the drain outlet at the bottom end of the guide component is arranged parallel to the conveyor belt, and the height of the drain outlet is flush with the middle position between the conveyor belts, the slag collecting box is aligned with one end of the wedge-shaped water filter plate through the wedge-shaped opening, the outer surface of the slag cleaning plate is movably abutted against the side bottom of the scraper plate on one side away from the cleaning shaft, the bottom of both ends of the positioning bracket passes through the top of the slag collecting box and is plugged into the sealing plate, the cleaning shaft contacts the surface of the wedge-shaped water filter plate on the side of the slag cleaning plate, and magnetic plates are provided on both sides of the front end face of the slag collecting box near the wedge-shaped opening.

[0012] A method for treating and purifying a paint mist in a spray painting workshop, comprising: Step 1: Install the purification device at the rear bottom of the paint mist water curtain cabinet in the spraying workshop, and discharge the paint mist water extracted by the water curtain cabinet into the wedge-shaped water filter plate through the guide component; Step 2: Control the drive motor to drive the cleaning component to slide inside the wedge-shaped water filter plate through the transmission shaft and the transmission belt to scrape off the paint residue filtered by the wedge-shaped water filter plate. The wedge-shaped water filter plate itself is in an inclined state, which can prevent unfiltered paint from overflowing into the collection component. Step 3: The cleaning component will transport the paint residue to the inside of the collection component for collection. At the same time, the slag cleaning plate will drive the cleaning shaft to clean the surface of the wedge-shaped water filter plate to ensure normal filtration inside the wedge-shaped water filter plate. When the slag cleaning plate moves, it drives the water blocking slide to slide outside the drain outlet, thereby intercepting water at the scraping position of the slag cleaning plate.

[0013] Beneficial effects of the present invention: The present invention adds an automatic paint residue scooping function module at the bottom of the back of the paint mist water curtain cabinet, which has significant advantages over traditional water curtain cabinets. During the paint mist filtration process, this function can automatically and timely scoop out the intercepted paint residue, preventing the paint residue from accumulating in the cabinet, effectively maintaining the stable and efficient filtration performance of the water curtain cabinet, and continuously ensuring a good paint mist treatment effect. This greatly reduces the labor intensity of the staff, eliminating the need to spend a lot of time and energy cleaning paint residue after high-intensity work, improving work efficiency, and at the same time reducing the adverse effects of untimely cleaning on the service life of the equipment, providing strong support for the efficient production and intelligent development of the spray workshop; The present invention can filter paint mist water in a timely manner and automatically clean paint residue through the coordinated operation of the water filtering component, the collecting component, the cleaning component and the guide component, thereby ensuring the continuous and normal operation of the paint mist treatment and purification device in the spraying workshop and reducing the labor intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the front main body of the paint mist treatment and purification device; Figure 2 This is a schematic diagram of the rear structure of the paint mist treatment and purification device; Figure 3 This is a schematic diagram of the front-end structure of the water filtration component; Figure 4 It is a schematic diagram of the cutaway structure of the rear end of the water filtration component; Figure 5 This is a schematic diagram of the expanded structure of the rear end of the collecting component; Figure 6 This is a schematic diagram of the expanded structure of the front end of the collecting component; Figure 7 Schematic diagram of the cleaning component structure; Figure 8 Schematic diagram of the flow guide component structure.

[0016] Description of the drawings: 1. Water filtering component; 2. Collecting component; 3. Cleaning component; 4. Guide component; 11. Water supply interface; 12. Transmission shaft; 13. Control box; 14. Bevel gear; 15. Drive motor; 16. Water tank; 17. Wedge-shaped water filter plate; 18. Conveyor belt; 19. Water guide pipe; 110. Groove; 111. Water filter chamber; 112. Transmission tooth groove; 21. Slag collecting box; 22. Sealing plate; 23. First traction spring; 24. Positioning bracket; 25. Slag scraper; 26. Limiting strip; 27. Second traction spring; 28. Wedge-shaped mouth; 31. Water blocking slide; 32. Slag cleaning plate; 33. Threaded hole; 34. Snap-in groove; 35. Transmission gear; 36. Cleaning shaft; 41. Water barrier; 42. Water guide frame; 43. Drain outlet. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] See also Figures 1-8 As shown, the present invention is a paint mist treatment and purification device for a spraying workshop, comprising: a water filter component 1 and a collection component 2, the collection component 2 being movably connected to one end of the water filter component 1, a cleaning component 3 being provided inside the water filter component 1, and a flow guide component 4 being fixedly installed on one side of the upper portion of the water filter component 1; The water filter component 1 is used to receive and filter the discharged paint mist water, and drive the cleaning component 3 to clean the paint residue filtered inside the water filter component 1; The collecting component 2 is used to collect the paint residue scraped by the cleaning component 3 and can scrape off the paint residue on the surface of the cleaning component 3; The cleaning component 3 is used to clean the paint residue filtered inside the water filtering component 1 and clean the inner surface of the water filtering component 1; the guide component 4 is used to guide and transport the paint water.

[0019] The water filtering component 1 includes a water tank 16, a wedge-shaped water filter plate 17 is obliquely arranged inside the water tank 16, a water supply interface 11 is provided at the top middle part of one side of the water tank 16, and the bottom end of the water supply interface 11 is symmetrically fixedly connected to a water pipe 19 plugged into the inside of the water tank 16, and the upper parts of both ends of the wedge-shaped water filter plate 17 are rotatably clamped with a transmission shaft 12, a driving motor 15 is fixedly mounted on the top side of one end of the water tank 16, and a bevel gear 14 is fixedly mounted on the bottom end of the driving motor 15 and the outer surface of one end of the transmission shaft 12, a control box 13 is fixedly mounted on one end face of the water tank 16, and a transmission belt 18 is sleeved on the outer surface of the transmission shaft 12, a water filter chamber 111 is provided inside the water tank 16, and a groove 110 is opened on the inner bottom end of the water filter chamber 111, and a transmission tooth groove 112 is opened on the inner surface of both sides of the wedge-shaped water filter plate 17.

[0020] The collecting component 2 includes a slag collecting box 21, and a sealing plate 22 is rotatably installed on the rear end face of the slag collecting box 21. A positioning bracket 24 is inserted at the top of the slag collecting box 21 and above the sealing plate 22. The outer surfaces of both ends of the positioning bracket 24 are solidly sleeved with a first traction spring 23. A scraping plate 25 is rotatably installed at one end of the interior of the slag collecting box 21 away from the sealing plate 22. A limiting bar 26 is provided inside the slag collecting box 21 and above the scraping plate 25. The bottom surfaces of both ends of the scraping plate 25 are fixedly connected with a second traction spring 27. A wedge-shaped opening 28 is provided on the front end face of the slag collecting box 21.

[0021] The cleaning component 3 includes a slag cleaning plate 32, the top of which is symmetrically provided with a snap-in groove 34, the inner bottom surface of which is provided with a threaded hole 33, and the bottom sides of the side surfaces of the slag cleaning plate 32 are symmetrically rotated and snap-in with a cleaning shaft 36, the top end of the cleaning shaft 36 is fixedly installed with a transmission gear 35, and the top end of the slag cleaning plate 32 is rotatably connected to a water-blocking slide bar 31.

[0022] The flow guide component 4 includes a water guide frame 42 , the interior of which is evenly provided with water baffles 41 , and a drainage port 43 is provided on the bottom side of the water guide frame 42 .

[0023] The water delivery interface 11 is aligned with the groove 110 through the water pipe 19 at the bottom, and can extract the filtered water inside the water filter chamber 111 for recycling under the action of an external water pump. The driving motor 15 is meshed with one end of the transmission shaft 12 through the bevel gear 14, so as to control the rotation of the transmission shaft 12. The outer surface of the transmission belt 18 is connected with a fastening screw, and the slag cleaning plate 32 is fastened to the fastening screw on the outer surface of the transmission belt 18 through the threaded hole 33, which can ensure the stability of the connection between the slag cleaning plate 32 and the transmission belt 18. The bottom of the slag cleaning plate 32 is movably in sliding contact with the inner surface of the wedge-shaped water filter plate 17, which can When the slag cleaning plate 32 slides, the paint residue on the surface of the wedge-shaped water filter plate 17 is scraped off. The cleaning shaft 36 is meshed with the transmission tooth groove 112 on the inner surface of the wedge-shaped water filter plate 17 through the transmission gear 35, and can drive the cleaning shaft 36 to rotate when the slag cleaning plate 32 slides to clean the wedge-shaped water filter plate 17. The slag cleaning plate 32 is slidably engaged with the drain outlet 43 through the water blocking slide 31, and can block the drain outlet 43 corresponding to the position where the slag cleaning plate 32 moves. The connection points between the outer surface of the water blocking slide 31 and the slag cleaning plate 32 are seven to three, and the side close to the cleaning shaft 36 is shorter to prevent water from scouring the scraping surface of the slag cleaning plate 32.

[0024] The drain outlet 43 at the bottom end of the guide component 4 is arranged parallel to the conveyor belt 18, so that the water blocking slide 31 can be driven by the slag cleaning plate 32 to slide back and forth normally, and the height of the drain outlet 43 is flush with the middle position between the conveyor belts 18, which can ensure that when the slag cleaning plate 32 slides, the water blocking slide 31 will not slide deviatingly. The slag collecting box 21 is aligned with one end of the wedge-shaped water filter plate 17 through the wedge-shaped opening 28, so as to facilitate receiving the paint residue scraped by the slag cleaning plate 32. The outer surface of the slag cleaning plate 32 is away from the cleaning shaft 36 and is movably abutted against the side bottom of the scraper plate 25, which can automatically remove the paint residue adhering to the surface of the slag cleaning plate 32 and position it. The bottoms of both ends of the insertion bracket 24 pass through the top of the slag box 21 and are plugged into the sealing plate 22, which can play a positioning role in the sealing plate 22, ensuring that the sealing plate 22 seals the paint residue inside the slag box 21. The cleaning shaft 36 contacts the surface of the wedge-shaped water filter plate 17 on the side of the cleaning plate 32, and can clean the filter holes on the surface of the wedge-shaped water filter plate 17 when the cleaning shaft 36 rotates, ensuring the normal filtering function of the wedge-shaped water filter plate 17. Magnetic plates are provided on both sides of the front end surface of the slag box 21 near the wedge-shaped opening 28, which can make the slag box 21 and the end of the water tank 16 adsorbed, and at the same time facilitate the movement of the slag box 21 to clean the paint residue inside.

[0025] A method for treating and purifying a paint mist in a spray painting workshop, comprising: Step 1: Install the purification device at the rear bottom of the paint mist water curtain cabinet in the spraying workshop, and discharge the paint mist water extracted by the water curtain cabinet into the wedge-shaped water filter plate 17 through the guide component 4; Step 2: Control the drive motor 15 to drive the cleaning component 3 to slide inside the wedge-shaped water filter plate 17 through the transmission shaft 12 and the conveyor belt 18 to scrape off the paint residue filtered by the wedge-shaped water filter plate 17. The wedge-shaped water filter plate 17 itself is in an inclined state, which can prevent unfiltered paint from overflowing into the collection component 2. Step three, the cleaning component 3 will transport the paint residue to the inside of the collecting component 2 for collection. At the same time, the slag cleaning plate 32 will drive the cleaning shaft 36 to clean the surface of the wedge-shaped water filter plate 17 to ensure normal filtration inside the wedge-shaped water filter plate 17. When the slag cleaning plate 32 moves, it drives the water blocking slide 31 to slide outside the drain outlet 43, thereby intercepting water at the scraping position of the slag cleaning plate 32.

[0026] The working principle of the present invention is as follows: first, the purification device is connected to the corresponding bottom of the rear of the paint mist water curtain cabinet in the spraying workshop, and the paint mist water extracted by the water curtain cabinet is discharged into the wedge-shaped water filter plate 17 through the guide component 4. The wedge-shaped water filter plate 17 will filter the paint residue therein. Since the wedge-shaped water filter plate 17 is in an inclined state inside the water tank 16, the paint water discharged through the drain port 43 will not overflow into the interior of the collecting component 2. Moreover, after the wedge-shaped water filter plate 17 filters the paint water for a long time, it is necessary to clean the paint residue inside the wedge-shaped water filter plate 17. First, start the drive motor 15 to run, and drive the transmission shaft 12 to rotate through the bevel gear 14 at the bottom. At the same time, the transmission shaft 12 will drive the slag cleaning plate 32 connected to the outer surface to slide inside the wedge-shaped water filter plate 17 through the transmission belt 18 on the outer surface. Since the outer periphery of the bottom of the slag cleaning plate 32 is adapted to abut against the inner surface of the wedge-shaped water filter plate 17 When the slag cleaning plate 32 is separated from the scraper plate 25, the second traction spring 27 pulls the limit bar 26 to reset and vibrate and deflect downward, ensuring that the paint residue falls off; Among them, when the slag cleaning plate 32 slides inside the wedge-shaped water filter plate 17, the transmission gear 35 at one end of the cleaning shaft 36 is meshed with the transmission tooth groove 112 on the surface of the wedge-shaped water filter plate 17. When the slag cleaning plate 32 moves inside the wedge-shaped water filter plate 17, it will drive the cleaning shaft 36 to rotate synchronously, thereby cleaning the inner surface of the wedge-shaped water filter plate 17 to ensure normal filtration inside the wedge-shaped water filter plate 17. Moreover, when the slag cleaning plate 32 moves, it will drive the water blocking slide 31 to slide outside the drain port 43, thereby intercepting water at the scraping position of the slag cleaning plate 32. Due to the water blocking slide on the side of the forward direction of the slag cleaning plate 32 The end of the strip 31 can be used to cut off the water flow in the forward direction of the slag cleaning plate 32 with the long end of the water blocking slide 31, thereby preventing the water flow from impacting the paint residue scraped off by the slag cleaning plate 32, and when the slag cleaning plate 32 follows the deflection of the conveyor belt 18, since the water blocking slide 31 is at the center position of the conveyor belt 18, when the slag cleaning plate 32 deflects at the end of the conveyor belt 18, the connection point between the slag cleaning plate 32 and the water blocking slide 31 will be coaxial with the transmission shaft 12, so that when the slag cleaning plate 32 is flipped upward and reset, it will drive the water blocking slide 31 to slide in the opposite direction at the end of the drain outlet 43 until the slag cleaning plate 32 is flipped downward again and The wedge-shaped water filter plate 17 is internally adapted to abut against the paint residue inside the wedge-shaped water filter plate 17, and the paint residue inside the wedge-shaped water filter plate 17 is cleaned cyclically. The water-blocking plates 41 are evenly arranged inside the water guide frame 42, so that the paint water can be evenly discharged through the drain port 43 without being affected by the inclined drain port 43, thereby preventing most of the water from being discharged through the bottom end of the drain port 43. After the interior of the slag box 21 is full of paint residue, the slag box 21 can be pulled to separate from one end face of the water tank 16. At the same time, when it is necessary to clean the paint residue inside the slag box 21, the positioning bracket 24 can be pulled up so that the bottom ends of the positioning bracket 24 are aligned with the sealing plate 22. Separate the top, then pull the sealing plate 22 to flip over, and then remove the paint residue inside the slag box 21, and then align the magnetic plate at the end of the slag box 21 with the end of the water tank 16, so that the end of the slag box 21 is attracted and connected to the end of the water tank 16, and at the same time ensure that the wedge-shaped mouth 28 is aligned with the end of the wedge-shaped water filter plate 17. Through the coordinated operation of the water filtering component 1, the collecting component 2, the cleaning component 3 and the guide component 4, the paint mist water can be filtered in time, and the paint residue can be automatically cleaned, thereby ensuring the continuous and normal operation of the paint mist treatment and purification device in the spray workshop and reducing the labor intensity of the staff.

[0027] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A paint mist treatment and purification device for a spray painting workshop, comprising: A water filter component (1) and a collecting component (2), wherein the collecting component (2) is movably connected to one end of the water filter component (1), and is characterized in that a cleaning component (3) is provided inside the water filter component (1), and a flow guide component (4) is fixedly installed on one side of the upper portion of the water filter component (1); The water filter component (1) is used to receive and filter the discharged paint mist water, and drive the cleaning component (3) to clean the paint residue filtered inside the water filter component (1); The collecting component (2) is used to collect the paint residue scraped out by the cleaning component (3), and is capable of scraping off the paint residue on the surface of the cleaning component (3); The cleaning component (3) is used to clean the paint residue filtered inside the water filter component (1) and simultaneously clean the inner surface of the water filter component (1); the flow guide component (4) is used to guide and transport the paint water.

2. A paint mist treatment and purification device for a spray painting workshop according to claim 1, characterized in that: The water filter component (1) includes a water tank (16), a wedge-shaped water filter plate (17) is obliquely provided inside the water tank (16), a water supply interface (11) is provided at the top of the middle portion of one side of the water tank (16), a water pipe (19) plugged into the inside of the water tank (16) is symmetrically fixedly connected to the bottom end of the water supply interface (11), a transmission shaft (12) is rotatably clamped at the upper portion of both ends of the wedge-shaped water filter plate (17), and a drive motor (15) is fixedly installed on the side of the top end of one end of the water tank (16); A bevel gear (14) is fixedly mounted on the bottom end of the drive motor (15) and the outer surface of one end of the transmission shaft (12); a control box (13) is fixedly mounted on one end surface of the water tank (16); a transmission belt (18) is sleeved on the outer surface of the transmission shaft (12); a water filter chamber (111) is provided inside the water tank (16); grooves (110) are provided at opposite bottom ends of the inner portion of the water filter chamber (111); and transmission tooth grooves (112) are provided on the inner surfaces of both sides of the wedge-shaped water filter plate (17).

3. A paint mist treatment and purification device for a spray painting workshop according to claim 2, characterized in that: The collecting component (2) includes a slag collecting box (21), a sealing plate (22) is rotatably mounted on the rear end face of the slag collecting box (21), a positioning bracket (24) is plugged into the top of the slag collecting box (21) and located above the sealing plate (22), and first traction springs (23) are solidly sleeved on the outer surfaces of both ends of the positioning bracket (24), a scraping plate (25) is rotatably mounted on one end of the interior of the slag collecting box (21) away from the sealing plate (22), a limiting strip (26) is provided in the interior of the slag collecting box (21) and located above the scraping plate (25), and second traction springs (27) are fixedly connected to the bottom surfaces of both ends of the scraping plate (25), and a wedge-shaped opening (28) is provided on the front end face of the slag collecting box (21).

4. A paint mist treatment and purification device for a spray painting workshop according to claim 3, characterized in that: The cleaning component (3) includes a slag cleaning plate (32), the top of the slag cleaning plate (32) is symmetrically provided with a clamping groove (34), the inner bottom surface of the clamping groove (34) is provided with a threaded hole (33), and the bottom of the side of the slag cleaning plate (32) is symmetrically rotatably clamped with a cleaning shaft (36), one end of the top of the cleaning shaft (36) is fixedly installed with a transmission gear (35), and the top end of the slag cleaning plate (32) is rotatably connected to a water blocking slide (31).

5. The paint mist treatment and purification device for a spray painting workshop according to claim 4, characterized in that: The flow guide component (4) comprises a water guide frame (42), water baffles (41) are evenly arranged inside the water guide frame (42), and a drainage port (43) is provided on the bottom side of the water guide frame (42).

6. The paint mist treatment and purification device for a spray painting workshop according to claim 5, characterized in that: The water delivery interface (11) is aligned with the groove (110) through the water guide pipe (19) at the bottom, the driving motor (15) is meshed with one end of the transmission shaft (12) through the bevel gear (14), the outer surface of the transmission belt (18) is connected with a fastening screw, the slag cleaning plate (32) is fastened to the fastening screw on the outer surface of the transmission belt (18) through the threaded hole (33), the bottom of the slag cleaning plate (32) is movable and slidably abuts against the inner surface of the wedge-shaped water filter plate (17), the cleaning shaft (36) is meshed with the transmission tooth groove (112) on the inner surface of the wedge-shaped water filter plate (17) through the transmission gear (35), the slag cleaning plate (32) is slidably connected to the drain outlet (43) through the water blocking slide (31), the connection points of the outer surface of the water blocking slide (31) and the slag cleaning plate (32) are 7 to 3, and the side close to the cleaning shaft (36) is shorter.

7. The paint mist treatment and purification device for a spray painting workshop according to claim 6, characterized in that: The drainage port (43) at the bottom end of the flow guide component (4) is arranged parallel to the conveyor belt (18), and the height of the drainage port (43) is flush with the middle position between the conveyor belts (18). The slag collecting box (21) is aligned with one end of the wedge-shaped water filter plate (17) through the wedge-shaped opening (28). The outer surface of the slag cleaning plate (32) is movably abutted against the bottom of the side end of the scraper plate (25) on a side away from the cleaning shaft (36). The bottoms of both ends of the positioning bracket (24) pass through the top of the slag collecting box (21) and are plugged into the blocking plate (22). The cleaning shaft (36) contacts the surface of the wedge-shaped water filter plate (17) on the side of the slag cleaning plate (32). Magnetic plates are provided on both sides of the front end surface of the slag collecting box (21) close to the wedge-shaped opening (28).

8. A method for treating and purifying paint mist in a spray painting workshop, using the paint mist treatment and purification device of claim 7, characterized in that: include: Step 1: First, install the purification device at the rear bottom of the paint mist water curtain cabinet in the spraying workshop, and discharge the paint mist water extracted from the water curtain cabinet into the wedge-shaped water filter plate (17) through the guide component (4); Step 2: Control the driving motor (15) to drive the cleaning component (3) to slide inside the wedge-shaped water filter plate (17) through the transmission shaft (12) and the transmission belt (18), scraping off the paint residue filtered by the wedge-shaped water filter plate (17). The wedge-shaped water filter plate (17) itself is in an inclined state, which can prevent unfiltered paint from overflowing into the collection component (2); Step 3: The cleaning component (3) transports the paint residue to the inside of the collecting component (2) for collection. At the same time, the slag cleaning plate (32) drives the cleaning shaft (36) to clean the surface of the wedge-shaped water filter plate (17) to ensure normal filtration inside the wedge-shaped water filter plate (17). When the slag cleaning plate (32) moves, it drives the water blocking slide (31) to slide outside the drain outlet (43), thereby intercepting water at the scraping position of the slag cleaning plate (32).

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