Multi-link paint waste gas purification device for paint spray booth

Abstract

The invention relates to the technical field of paint waste gas purification, and discloses a paint spray booth multi-link paint waste gas purification device which comprises a purification box, a plurality of UV lamp tubes are installed in the purification box, and the outer surfaces of two supporting shafts in each set are fixedly sleeved with a first partition plate and a second partition plate correspondingly. A rack is fixedly connected to the outer surface of the top of the supporting frame, a motor is fixedly installed on the outer surface of the top of the fixing frame, and the outer surfaces of the two rotating shafts in each set are fixedly sleeved with a first half gear and a second half gear correspondingly. A motor drives a rotating shaft to rotate, a first half gear, a second half gear and a rack are matched, so that a connecting rod moves, a rotating rod is driven to push an extension rod, the extension rod drives a first partition plate and a second partition plate to rotate around a supporting shaft, the flowing direction of waste gas is changed through the first partition plate and the second partition plate, and the contact time of the waste gas and a UV lamp tube is prolonged; therefore, the waste gas can be further in full contact with the UV lamp tube for full cracking reaction.

Description

Technical Field

[0001] The invention relates to the technical field of paint waste gas purification, and in particular to a multi-link paint waste gas purification device for a paint spraying room. Background Art

[0002] Paint can bring color to objects and improve the beauty of various objects. It can also protect the surface of objects. Therefore, many objects will be painted after production. However, a large amount of waste gas is usually generated during the production and spraying process of paint, including dust, toluene, methanol, xylene and other toxic and harmful gases. If the waste gas is directly discharged into the air, it will cause environmental pollution and endanger people's health.

[0003] In the prior art, waste gas photolysis technology has gradually begun to be used, but most of the existing devices directly pass the waste gas into the reaction pipe and photolyze the waste gas through UV lamps. However, when this method is used to treat some waste gases with higher concentrations, the waste gas is not in sufficient contact with the UV lamps, which can easily lead to insufficient purification, prolong the waste gas decomposition time, and make the waste gas decomposition effect poor. Therefore, a multi-link paint waste gas purification device for a paint spray room is proposed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a multi-link paint exhaust gas purification device for a paint spraying room to solve the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-link paint exhaust gas purification device for a paint spraying room, comprising a purification box, a plurality of UV lamps are installed inside the purification box, a plurality of groups of support shafts are rotatably connected inside the purification box, each group of the support shafts is two, each group of the two support shafts are respectively located on the left and right sides of the purification box, the outer surfaces of each group of the two support shafts are respectively fixedly sleeved with a first partition and a second partition, the top outer surfaces of the first partition and the second partition are both fixedly connected with an extension rod, the outer surface of the extension rod is rotatably connected with a rotating rod, the other end of the rotating rod is rotatably connected with a connecting rod, the top outer surface of the connecting rod is fixedly connected with a support frame, the top outer surface of the support frame is fixedly connected with a rack, the top outer surface of the purification box is fixedly connected with a fixing frame, the bottom outer surface of the fixing frame is rotatably connected with a plurality of groups of rotating shafts, each group of the rotating shafts is two, a motor is fixedly installed on the top outer surface of the fixing frame, the output end of the motor is fixedly connected to the outer surface of one of the rotating shafts, and the outer surfaces of each group of the two rotating shafts are respectively fixedly sleeved with a first half gear and a second half gear.

[0006] As a further explanation of the present invention, a filter cartridge is fixedly connected to the front outer surface of the purification box, a fixing ring is provided inside the filter cartridge, a filter plate is installed inside the fixing ring, a cleaning shaft is rotatably passed through the center of the filter plate, a cleaning brush is fixedly sleeved on the outer surface of the cleaning shaft, and the cleaning brush is movably fitted to the outer surface of the filter plate.

[0007] As a further explanation of the present invention, the rear side of the purification box is fixedly connected to a connecting pipe, the other end of the connecting pipe is fixedly connected to a water washing box, a one-way valve is installed inside the connecting pipe with the flow direction of the connecting pipe toward the inside of the water washing box, a stirring shaft is rotatably penetrated through the top outer surface of the water washing box, and a stirring blade is fixedly sleeved on the outer surface of the stirring shaft.

[0008] As a further illustration of the present invention, the gap between the first partition and the left side of the purification box is larger than the gap between the first partition and the right side of the purification box, and the gap between the second partition and the right side of the purification box is larger than the gap between the second partition and the left side of the purification box.

[0009] As a further explanation of the present invention, the outer surfaces of the plurality of rotating shafts are fixedly sleeved with synchronous pulleys, and a synchronous transmission belt is wound and meshed between the plurality of synchronous pulleys.

[0010] As a further explanation of the present invention, a plurality of arc-shaped slide grooves are provided on the top outer surface of the purification box, and a plurality of the extension rods are respectively slidably connected to the inside of the plurality of arc-shaped slide grooves.

[0011] As a further illustration of the present invention, when the first half gear is engaged with the rack, the second half gear is disengaged from the rack, and when the second half gear is engaged with the rack, the first half gear is disengaged from the rack.

[0012] As a further explanation of the present invention, an accordion cover is installed on the top outer surface of the purification box outside the arc-shaped slide groove, and the extension rod passes through the outer surface of the accordion cover.

[0013] As a further explanation of the present invention, the outer surface of one of the several rotating shafts and the outer surface of the transmission shaft are both fixedly sleeved with a first sprocket, a first chain is wound and meshed between the two first sprockets, the outer surface of the transmission shaft is fixedly sleeved with a driving bevel gear, the outer surface of the cleaning shaft is fixedly sleeved with a driven bevel gear, and the driving bevel gear is movably meshed with the outer surface of the driven bevel gear.

[0014] As a further description of the present invention, the outer surface of one of the plurality of rotating shafts and the outer surface of the stirring shaft are both fixedly sleeved with a second sprocket, and a second chain is wound and meshed between the outer surfaces of two of the second sprockets.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In a multi-link paint exhaust gas purification device for a paint spraying room provided by the present invention, a motor drives a rotating shaft to rotate, and cooperates with a synchronous pulley and a synchronous transmission belt to make multiple rotating shafts rotate, cooperates with a first half gear, a second half gear and a rack to move the connecting rod, and drives the rotating rod to push the extension rod, so that the extension rod drives the first partition and the second partition to rotate around the support shaft, and changes the flow direction of the exhaust gas through the first partition and the second partition, increases the contact time of the exhaust gas with the UV lamp, so that the exhaust gas can further fully contact with the UV lamp to perform a sufficient cracking reaction.

[0017] 2. In a multi-link paint exhaust gas purification device for a paint spraying room provided by the present invention, the exhaust gas is preliminarily filtered through a filter plate to prevent impurities in the exhaust gas from adhering to the UV lamp tube. When the rotating shaft rotates, the first sprocket on it is driven to rotate, and the transmission shaft is rotated in conjunction with the first chain. The cleaning shaft is coordinated with the active bevel gear and the driven bevel gear to drive the cleaning brush to clean the surface of the filter plate, thereby preventing the filter plate from being blocked due to long-term use, thereby eliminating the need to frequently disassemble the filter plate.

[0018] 3. In a multi-link paint waste gas purification device for a paint spraying room provided by the present invention, the waste gas is cracked and purified in the purification box and then enters the water washing box. When the rotating shaft rotates, the second sprocket on it is driven to rotate, and the stirring shaft is rotated in conjunction with the second chain, driving the stirring blades to stir the water washing liquid, thereby increasing the contact area between the waste gas and the water washing liquid, and then the waste gas is discharged into the atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the top view and cross-sectional structure of the purification box and its related structures of the present invention;

[0021] Figure 3 It is a schematic diagram of a top view and cross-sectional structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the left side cross-sectional structure of the present invention;

[0023] Figure 5 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0024] Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0025] Figure 7 This is a schematic diagram of the internal structure of the filter cartridge of the present invention;

[0026] Figure 8It is a schematic diagram of the internal structure of the water washing box of the present invention.

[0027] In the figure: 1, purification box; 2, support shaft; 3, first partition; 4, second partition; 5, extension rod; 6, rotating rod; 7, connecting rod; 8, support frame; 9, rack; 10, fixed frame; 11, motor; 12, rotating shaft; 13, first half gear; 14, second half gear; 15, filter cartridge; 16, fixing ring; 17, filter plate; 18, cleaning shaft; 19, transmission shaft; 20, active bevel gear; 21, driven bevel gear; 22, washing box; 23, stirring shaft; 24, stirring blade; 25, synchronous pulley; 26, synchronous transmission belt; 27, first chain; 28, second sprocket; 29, second chain; 30, accordion cover; 31, first sprocket. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] Please refer to Figure 1-Figure 6The present invention provides a technical solution: a multi-link paint exhaust gas purification device for a paint spraying room, comprising a purification box 1, a plurality of UV lamps are installed inside the purification box 1, a plurality of groups of support shafts 2 are rotatably connected inside the purification box 1, each group of support shafts 2 is two, each group of two support shafts 2 are respectively located on the left and right sides of the purification box 1, and the outer surfaces of each group of two support shafts 2 are respectively fixedly sleeved with a first partition plate 3 and a second partition plate 4, the top outer surfaces of the first partition plate 3 and the second partition plate 4 are fixedly connected with an extension rod 5, the outer surface of the extension rod 5 is rotatably connected with a rotating rod 6, the other end of the rotating rod 6 is rotatably connected with a connecting rod 7, and the top outer surface of the connecting rod 7 is fixed A support frame 8 is connected, and a rack 9 is fixedly connected to the top outer surface of the support frame 8. A fixing frame 10 is fixedly connected to the top outer surface of the purification box 1. A plurality of sets of rotating shafts 12 are rotatably connected to the bottom outer surface of the fixing frame 10, and each set of rotating shafts 12 is two. A motor 11 is fixedly installed on the top outer surface of the fixing frame 10, and the output end of the motor 11 is fixedly connected to the outer surface of one of the rotating shafts 12. The outer surfaces of each set of two rotating shafts 12 are respectively fixedly sleeved with a first half gear 13 and a second half gear 14. Specifically, the exhaust gas is passed into the purification box 1, and the exhaust gas is irradiated by a UV lamp to perform photolysis purification. The exhaust gas is formed along the first partition plate 3 and the second partition plate 4. The channel moves, changes the flow direction of the exhaust gas, prolongs the time the exhaust gas stays in the purification chamber, and makes the photolysis reaction purification more sufficient. According to the concentration of the exhaust gas, the motor 11 is turned on, and the motor 11 drives the rotating shaft 12 of its output shaft to rotate. When the multiple rotating shafts 12 rotate, they respectively drive the multiple first half gears 13 and the second half gears 14 to rotate. When the first half gear 13 is engaged with the rack 9, the second half gear 14 is disengaged from the rack 9, and the first half gear 13 drives the rack 9 to move. When the first half gear 13 is disengaged from the rack 9, the second half gear 14 is engaged with the rack 9, and the second half gear 14 drives the rack 9 to move to the other side, thereby While driving the rotating shaft 12 to rotate, 11 drives the rack 9 to move back and forth. When the rack 9 moves, it drives the support frame 8 to move, so that the corresponding connecting rod 7 moves. When the connecting rod 7 moves, it drives the rotating rod 6, so that the angle of the rotating rod 6 changes. The rotating rod 6 drives the extension rod 5 to move, and the extension rod 5 drives the ends of the first partition 3 and the second partition 4 to move, so that the first partition 3 and the second partition 4 rotate around the support shaft 2, changing the inclination angle of the first partition 3 and the second partition 4. At the same time, when the first partition 3 and the second partition 4 rotate, a certain wind force is generated, so that the exhaust gas can further fully contact with the UV lamp tube to carry out a sufficient cracking reaction.

[0031] In this embodiment, the gap between the first partition 3 and the left side of the purification box 1 is larger than the gap between the first partition 3 and the right side of the purification box 1, and the gap between the second partition 4 and the right side of the purification box 1 is larger than the gap between the second partition 4 and the left side of the purification box 1. Specifically, the gaps between the multiple first partitions 3 and the second partitions 4 and the purification box 1 form a serpentine shape, which changes the flow direction of the exhaust gas and increases the contact time between the exhaust gas and the UV lamp.

[0032] In this embodiment, the outer surfaces of several rotating shafts 12 are fixedly sleeved with synchronous pulleys 25, and a synchronous transmission belt 26 is wound and meshed between the several synchronous pulleys 25. Specifically, when the rotating shaft 12 rotates, the synchronous pulleys 25 thereon are driven to rotate, and under the action of the synchronous transmission belt 26, the other synchronous pulleys 25 are rotated, so that multiple rotating shafts 12 rotate at the same time.

[0033] In this embodiment, a plurality of arc-shaped slide grooves are provided on the top outer surface of the purification box 1, and a plurality of extension rods 5 are respectively slidably connected to the inside of the plurality of arc-shaped slide grooves. Specifically, the arc-shaped slide grooves provide space for the movement of the extension rods 5.

[0034] In this embodiment, when the first half gear 13 is engaged with the rack 9, the second half gear 14 is disengaged from the rack 9, and when the second half gear 14 is engaged with the rack 9, the first half gear 13 is disengaged from the rack 9. Specifically, when the first half gear 13 is engaged with the rack 9, the second half gear 14 is disengaged from the rack 9, and the first half gear 13 drives the rack 9 to move. When the first half gear 13 is disengaged from the rack 9, the second half gear 14 is engaged with the rack 9, and the second half gear 14 drives the rack 9 to move to the other side, thereby driving the rack 9 to move back and forth while the motor 11 drives the rotating shaft 12 to rotate.

[0035] In this embodiment, an accordion cover 30 is installed on the top outer surface of the purification box 1 outside the arc-shaped slide groove, and the extension rod 5 passes through the outer surface of the accordion cover 30. Specifically, the arc-shaped slide groove is in a sealed state through the accordion cover 30 to prevent exhaust gas from leaking from the arc-shaped slide groove without affecting the movement of the extension rod 5.

[0036] In the specific implementation process,

[0037] Embodiment 2:

[0038] Please refer to Figure 1 and Figure 7The present invention provides a technical solution: a filter cartridge 15 is fixedly connected to the outer surface of the front side of the purification box 1, a fixing ring 16 is arranged inside the filter cartridge 15, a filter plate 17 is installed inside the fixing ring 16, a cleaning shaft 18 is rotatably penetrated at the center of the filter plate 17, a cleaning brush is fixedly sleeved on the outer surface of the cleaning shaft 18, and the cleaning brush is movably fitted with the outer surface of the filter plate 17. Specifically, the exhaust gas is filtered by the filter plate 17 in the filter cartridge 15 to prevent impurities in the exhaust gas from remaining on the surface of the UV lamp tube, and the cleaning brush is driven to rotate when the cleaning shaft 18 rotates, so that the cleaning shaft 18 rotates, and the cleaning shaft 18 drives the cleaning brush to rotate, and the impurities adhered to the surface of the filter plate 17 are cleaned, so as to avoid blockage caused by long-term use of the filter plate 17, thereby eliminating the need to frequently disassemble the filter plate 17.

[0039] In the present embodiment, the outer surface of one of the several rotating shafts 12 and the outer surface of the transmission shaft 19 are fixedly sleeved with a first sprocket 31, and a first chain 27 is wound and meshed between the two first sprockets 31. The outer surface of the transmission shaft 19 is fixedly sleeved with a driving bevel gear 20, and the outer surface of the cleaning shaft 18 is fixedly sleeved with a driven bevel gear 21. The driving bevel gear 20 is movably meshed with the outer surface of the driven bevel gear 21. Specifically, when the rotating shaft 12 rotates, it drives the first sprocket 31 thereon to rotate, and drives another first sprocket 31 to rotate under the action of the first chain 27, thereby rotating the transmission shaft 19, and the rotation of the transmission shaft 19 drives the driving bevel gear 20 to rotate, and the driving bevel gear 20 drives the driven bevel gear 21 to rotate, so that the cleaning shaft 18 rotates.

[0040] In the specific implementation process, before the exhaust gas enters the purification box 1, the exhaust gas passes through the filter cartridge 15, and the exhaust gas is filtered by the filter plate 17 in the filter cartridge 15 to prevent impurities in the exhaust gas from remaining on the surface of the UV lamp tube. When the rotating shaft 12 rotates, it drives the first sprocket 31 thereon to rotate, and drives another first sprocket 31 to rotate under the action of the first chain 27, so that the transmission shaft 19 rotates, and the rotation of the transmission shaft 19 drives the active bevel gear 20 to rotate, and the active bevel gear 20 drives the driven bevel gear 21 to rotate, so that the cleaning shaft 18 rotates, and the cleaning shaft 18 drives the cleaning brush to rotate, and the impurities adhered to the surface of the filter plate 17 are cleaned to avoid clogging of the filter plate 17 due to long-term use, so that there is no need to frequently disassemble the filter plate 17.

[0041] Embodiment 3:

[0042] Please refer to Figure 1 and Figure 8The present invention provides a technical solution: in this embodiment, a connecting pipe is fixedly connected to the rear side of the purification box 1, and the other end of the connecting pipe is fixedly connected to the water washing box 22. A one-way valve is installed inside the connecting pipe with the flow direction of the connecting pipe toward the inside of the water washing box 22. A stirring shaft 23 is rotatably penetrated through the top outer surface of the water washing box 22, and a stirring blade 24 is fixedly sleeved on the outer surface of the stirring shaft 23. Specifically, after the exhaust gas passes through the purification box 1, it enters the water washing box 22 for water washing. When the stirring shaft 23 rotates, it drives the stirring blade 24 to rotate, stirring the washing liquid, so that the exhaust gas is fully in contact with the washing liquid, and the one-way valve is used to prevent the water flow in the washing box 22 from flowing back to the purification box 1.

[0043] In this embodiment, the outer surface of one of the several rotating shafts 12 and the outer surface of the stirring shaft 23 are fixedly sleeved with a second sprocket 28, and a second chain 29 is meshed and wound between the outer surfaces of the two second sprockets 28. Specifically, when the rotating shaft 12 rotates, the second sprocket 28 thereon is driven to rotate, and under the action of the second chain 29, the other second sprocket 28 is driven to rotate, thereby causing the stirring shaft 23 to rotate.

[0044] In the specific implementation process, after the exhaust gas passes through the purification box 1, it enters the water washing box 22 for water washing. When the rotating shaft 12 rotates, it drives the second sprocket 28 thereon to rotate, and under the action of the second chain 29, it drives another second sprocket 28 to rotate, thereby causing the stirring shaft 23 to rotate, and the stirring shaft 23 drives the stirring blades 24 to rotate, stirring the washing liquid in the washing box 22, increasing the contact area between the exhaust gas and the washing liquid, and then discharging the exhaust gas into the atmosphere.

[0045] Working principle: When the present invention is in use, the waste gas is passed into the purification box 1, and the waste gas is irradiated by the UV lamp to perform photolysis purification. The waste gas moves along the channel formed by the first partition plate 3 and the second partition plate 4, which changes the flow direction of the waste gas and prolongs the time for the waste gas to stay in the purification chamber, so that the photolysis reaction purification is more sufficient. According to the concentration of the waste gas, the motor 11 is turned on, and the motor 11 drives the rotating shaft 12 of its output shaft to rotate, and drives the synchronous belt wheel 25 thereon to rotate. Under the action of the synchronous transmission belt 26, multiple rotating shafts 12 rotate at the same time. When the multiple rotating shafts 12 rotate, they respectively drive multiple first half gears 13 and second half gears 14 to rotate. When the first half gear 13 is engaged with the rack 9, the second half gear 14 is disengaged from the rack 9, and the first half gear 13 drives the rack 9 to move, and the first half gear 1 3 is disengaged from the rack 9, the second half gear 14 is engaged with the rack 9, and the second half gear 14 drives the rack 9 to move to the other side, so that when the motor 11 drives the rotating shaft 12 to rotate, the rack 9 is driven to move back and forth. When the rack 9 moves, it drives the support frame 8 to move, so that the corresponding connecting rod 7 moves. When the connecting rod 7 moves, it drives the rotating rod 6, so that the angle of the rotating rod 6 changes, and the rotating rod 6 drives the extension rod 5 to move. The extension rod 5 drives the ends of the first partition 3 and the second partition 4 to move, so that the first partition 3 and the second partition 4 rotate around the support shaft 2, changing the inclination angle of the first partition 3 and the second partition 4. At the same time, the first partition 3 and the second partition 4 rotate while generating a certain wind force, so that the exhaust gas can further fully contact with the UV lamp tube to perform a sufficient cracking reaction.

[0046] Before the exhaust gas enters the purification box 1, the exhaust gas passes through the filter cartridge 15 and is filtered by the filter plate 17 in the filter cartridge 15 to prevent impurities in the exhaust gas from remaining on the surface of the UV lamp tube. When the rotating shaft 12 rotates, it drives the first sprocket 31 thereon to rotate, and drives another first sprocket 31 to rotate under the action of the first chain 27, so that the transmission shaft 19 rotates, and the rotation of the transmission shaft 19 drives the active bevel gear 20 to rotate, and the active bevel gear 20 drives the driven bevel gear 21 to rotate, so that the cleaning shaft 18 rotates, and the cleaning shaft 18 drives the cleaning brush to rotate, and the impurities adhered to the surface of the filter plate 17 are cleaned to avoid clogging of the filter plate 17 due to long-term use, so that there is no need to frequently disassemble the filter plate 17.

[0047] After the exhaust gas passes through the purification box 1, it enters the water washing box 22 for water washing. When the rotating shaft 12 rotates, it drives the second sprocket 28 thereon to rotate, and under the action of the second chain 29, it drives another second sprocket 28 to rotate, thereby causing the stirring shaft 23 to rotate. The stirring shaft 23 drives the stirring blade 24 to rotate, stirring the washing liquid in the washing box 22, increasing the contact area between the exhaust gas and the washing liquid, and then discharging the exhaust gas into the atmosphere.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-link paint waste gas purification device for a paint spraying room, comprising a purification box (1), characterized in that: A plurality of UV lamp tubes are installed inside the purification box (1), and a plurality of groups of support shafts (2) are rotatably connected inside the purification box (1), each group of the support shafts (2) comprises two, and each group of the two support shafts (2) are respectively located on the left and right sides of the purification box (1), and the outer surfaces of each group of the two support shafts (2) are respectively fixedly sleeved with a first partition plate (3) and a second partition plate (4), and the top outer surfaces of the first partition plate (3) and the second partition plate (4) are both fixedly connected with an extension rod (5), and the outer surface of the extension rod (5) is rotatably connected with a rotating rod (6), and the other end of the rotating rod (6) is rotatably connected with a connecting rod (7), and the connecting rod The top outer surface of the purification box (1) is fixedly connected to a support frame (8), the top outer surface of the support frame (8) is fixedly connected to a rack (9), the top outer surface of the purification box (1) is fixedly connected to a fixed frame (10), the bottom outer surface of the fixed frame (10) is rotatably connected to multiple groups of rotating shafts (12), each group of the rotating shafts (12) is two, a motor (11) is fixedly installed on the top outer surface of the fixed frame (10), the output end of the motor (11) is fixedly connected to the outer surface of one of the rotating shafts (12), and the outer surface of each group of two rotating shafts (12) is respectively fixedly sleeved with a first half gear (13) and a second half gear (14).

2. A multi-link paint exhaust gas purification device for a paint spraying room according to claim 1, characterized in that: The front outer surface of the purification box (1) is fixedly connected to a filter cartridge (15), a fixing ring (16) is arranged inside the filter cartridge (15), a filter plate (17) is installed inside the fixing ring (16), a cleaning shaft (18) is rotatably passed through the center of the filter plate (17), a cleaning brush is fixedly sleeved on the outer surface of the cleaning shaft (18), and the cleaning brush is movably fitted with the outer surface of the filter plate (17).

3. The multi-link paint exhaust gas purification device for a paint spraying room according to claim 1 is characterized in that: The rear side of the purification box (1) is fixedly connected to a connecting pipe, the other end of the connecting pipe is fixedly connected to a water washing box (22), a one-way valve is installed inside the connecting pipe so that the flow direction is from the connecting pipe to the inside of the water washing box (22), a stirring shaft (23) is rotatably penetrated through the top outer surface of the water washing box (22), and a stirring blade (24) is fixedly sleeved on the outer surface of the stirring shaft (23).

4. The multi-link paint exhaust gas purification device for a paint spraying room according to claim 1 is characterized in that: The gap between the first partition (3) and the left side of the purification box (1) is larger than the gap between the first partition (3) and the right side of the purification box (1), and the gap between the second partition (4) and the right side of the purification box (1) is larger than the gap between the second partition (4) and the left side of the purification box (1).

5. The multi-link paint exhaust gas purification device for a paint spraying room according to claim 1 is characterized in that: The outer surfaces of the plurality of rotating shafts (12) are fixedly sleeved with synchronous pulleys (25), and a synchronous transmission belt (26) is wound and meshed between the plurality of synchronous pulleys (25).

6. The multi-link paint exhaust gas purification device for a paint spraying room according to claim 1 is characterized by: The top outer surface of the purification box (1) is provided with a plurality of arc-shaped sliding grooves, and the plurality of extension rods (5) are respectively slidably connected to the inside of the plurality of arc-shaped sliding grooves.

7. The multi-link paint exhaust gas purification device for a paint spraying room according to claim 1 is characterized in that: When the first half gear (13) is meshed with the rack (9), the second half gear (14) is disengaged from the rack (9); when the second half gear (14) is meshed with the rack (9), the first half gear (13) is disengaged from the rack (9).

8. The multi-link paint exhaust gas purification device for a paint spraying room according to claim 1 is characterized by: An accordion cover (30) is installed on the top outer surface of the purification box (1) outside the arc-shaped slide groove, and the extension rod (5) passes through the outer surface of the accordion cover (30).

9. The multi-link paint exhaust gas purification device for a paint spraying room according to claim 2 is characterized by: The outer surface of one of the plurality of rotating shafts (12) and the outer surface of the transmission shaft (19) are both fixedly sleeved with a first sprocket (21), a first chain (27) is wound and meshed between the two first sprockets (21), the outer surface of the transmission shaft (19) is fixedly sleeved with a driving bevel gear (20), the outer surface of the cleaning shaft (18) is fixedly sleeved with a driven bevel gear (21), and the driving bevel gear (20) is movably meshed with the outer surface of the driven bevel gear (21).

10. The multi-link paint exhaust gas purification device for a paint spraying room according to claim 3, characterized in that: The outer surface of one of the plurality of rotating shafts (12) and the outer surface of the stirring shaft (23) are both fixedly sleeved with a second sprocket (28), and a second chain (29) is wound and meshed between the outer surfaces of two of the second sprockets (28).

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