A painting plant exhaust gas treatment device

Abstract

The application discloses a kind of coating workshop waste gas treatment devices of waste gas treatment technical field, including box, the box front end is equipped with air inlet, the box rear end is equipped with exhaust port, the box inside is inclinedly provided with two limit frame, two the limit frame inside are respectively slidably provided with the inner frame that several activated carbon blocks are embedded in, by turnover mechanism, the limit frame position close to air inlet and exhaust port can be periodically exchanged, since activated carbon block close to air inlet adsorbs impurity fast, saturation degree is high, and activated carbon block close to exhaust port relatively less adsorbs impurity, position exchanges after can let different position activated carbon block adsorbs the amount of impurity gradually neutralizes balance, avoid the problem that the operation and maintenance cost increases or waste gas treatment effect is influenced in traditional technology due to activated carbon plate adsorption saturation degree difference, significantly prolongs the overall use cycle of activated carbon block.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a waste gas treatment device for a painting workshop. Background Technology

[0002] The industry commonly uses activated carbon adsorption filtration technology to remove large molecular particles from the exhaust gas in the spraying workshop. The specific method is to pass the exhaust gas into the activated carbon adsorption box, and the exhaust gas is purified by the adsorption effect of the multi-layer activated carbon plates in the box.

[0003] In the existing technology, in order to facilitate the disassembly and replacement of activated carbon, the activated carbon layer is usually installed in the adsorption box in a horizontal manner. Since the air inlet and outlet of the adsorption box are generally set in a horizontal position, the exhaust gas flows in the horizontal direction after entering the box. The contact area between the exhaust gas and the activated carbon plate is far less than that when it is placed vertically, which leads to a significant reduction in the adsorption efficiency of activated carbon for large molecular particles in the exhaust gas.

[0004] Furthermore, there are significant differences in the amount of impurities adsorbed by the activated carbon plates at different locations inside the adsorption chamber. After the exhaust gas enters the chamber through the inlet, it first comes into contact with the activated carbon plates closest to the inlet. Most of the large molecular particles in the exhaust gas are adsorbed and trapped by these activated carbon plates, and the amount of impurities adsorbed by the activated carbon plates subsequently decreases. The activated carbon plates near the inlet become saturated much faster than those near the exhaust outlet. If the adsorption saturation of the activated carbon plates at the inlet end is used as the standard to determine the cleaning or replacement cycle, it will result in too short a cleaning interval, increasing operation and maintenance costs and workload. If the activated carbon plates at the exhaust end are used as the standard, the activated carbon plates at the inlet end will become saturated due to untimely cleaning, failing to effectively perform their purification function, thus affecting the overall exhaust gas treatment effect of the adsorption chamber.

[0005] Based on this, the present invention designs a waste gas treatment device for a painting workshop to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a waste gas treatment device for painting workshops to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a waste gas treatment device for a painting workshop, comprising a housing, an air inlet at the front end of the housing, an exhaust outlet at the rear end of the housing, two limiting frames inclinedly arranged inside the housing, and an inner frame containing a plurality of activated carbon blocks slidably arranged inside each of the two limiting frames, and further comprising:

[0008] The flipping mechanism includes a first docking shaft fixed to the top two side walls of the limiting frame, and a second docking shaft fixedly connected to the bottom two side walls of the limiting frame. An upper transmission belt for moving the first docking shaft is rotatably installed inside the top of the air inlet, and a lower transmission belt for moving the second docking shaft is rotatably installed inside the bottom of the air inlet. A limiting component is also provided inside the air inlet. The limiting component is used to flip the two limiting frames by an angle so that they do not interfere with each other when sliding inside the air inlet.

[0009] As a further embodiment of the present invention, the limiting component includes a slide rail fixed inside the air inlet for sliding docking with the docking shaft, a limiting rod fixedly connected inside the air inlet at the top of the slide rail, a telescopic block slidably provided at the front end of the limiting rod, a reset spring fixedly connected inside the air inlet for resetting the telescopic block, and a paddle fixedly connected on the upper transmission belt for moving the docking shaft.

[0010] The inner sidewall of the air inlet is fixedly connected to a slide rail two. A cam for rolling contact with the slide rail two is rotatably connected to the docking shaft two. A clamping block for holding the docking shaft two is fixedly connected to the lower transmission belt. A rotating shaft is rotatably connected to one side of the bottom of the slide rail two. A torsion spring for resetting is fixedly connected to the center of rotation of the rotating shaft.

[0011] As a further embodiment of the present invention, a sealing plate is abutted on one side of the inner frame, a fixing frame is fixedly connected to one side of the sealing plate, a screw is fixedly connected to the fixing frame, one end of the screw passes through the sealing plate and is disposed outside the sealing plate, a threaded sleeve is slidably connected inside the sealing plate and screwed to the outside of the screw, a slot is provided on the side wall of the inner frame for docking with the threaded sleeve, a docking block is slidably connected inside the slot, a strong spring for resetting the docking block is fixedly connected inside the inner frame, locking rods are slidably connected inside both sides of the slot, a wedge block is fixedly connected to one side of the docking block, and the wedge block fits against the locking rod.

[0012] As a further embodiment of the present invention, a protruding plate is fixedly connected to the top of the limiting rod, and a slot for docking with the protruding plate is provided on the docking shaft.

[0013] As a further embodiment of the present invention, a fixed frame symmetrical to the direction of the limiting frame is fixedly connected inside the air inlet, and a plurality of activated carbon blocks are installed inside the fixed frame.

[0014] As a further embodiment of the present invention, baffles for restricting the flow of exhaust gas are fixedly connected to both the upper and lower sides of the air inlet.

[0015] As a further embodiment of the present invention, the interior of the limiting frame can be completely fitted with the outer wall of the inner frame, and the bottom of the inner frame is fixedly connected with a roller for rolling contact with the limiting frame.

[0016] As a further embodiment of the present invention, a connecting groove for docking with the sealing plate is provided on the side wall of the box.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This device places activated carbon blocks within an inclined limiting frame, changing the traditional method of placing activated carbon plates horizontally. When the exhaust gas flows within the chamber, the contact area with the inclined activated carbon blocks is significantly increased, allowing for more thorough contact with large molecular particles in the exhaust gas. This greatly improves the adsorption and filtration effect on impurities in the exhaust gas, effectively solving the problem of low adsorption efficiency caused by insufficient contact between exhaust gas and activated carbon plates in traditional technologies.

[0019] 2. The position of the limiting frame near the air inlet and the exhaust outlet can be swapped periodically by the flipping mechanism. Since the activated carbon block near the air inlet adsorbs impurities faster and has a higher saturation, while the activated carbon block near the exhaust outlet adsorbs relatively fewer impurities, the swapping of positions allows the amount of impurities adsorbed by the activated carbon blocks in different positions to gradually neutralize and balance. This avoids the problem of increased operation and maintenance costs or affected waste gas treatment effect caused by the difference in the adsorption saturation of activated carbon plates in traditional technology, and significantly extends the overall service life of the activated carbon block. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a cross-sectional view of the inside of the enclosure;

[0022] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the limiting frame structure;

[0024] Figure 5 This is a schematic diagram of the exploded structure of the limiting frame, inner frame, and activated carbon block.

[0025] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the box;

[0026] Figure 7 for Figure 6 Enlarged structural diagram at point B;

[0027] Figure 8 for Figure 6 Enlarged structural diagram at point C;

[0028] Figure 9 This is a sectional view of the inner frame side;

[0029] Figure 10 for Figure 9 Enlarged structural diagram at point D;

[0030] Figure 11 Here is a schematic diagram of the sealing plate structure:

[0031] Figure 12 This is a schematic diagram of the limiting frame in the flipped state inside the box.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Housing; 2. Air inlet; 3. Exhaust outlet; 4. Limiting frame; 5. Inner frame; 6. Activated carbon block; 7. Connecting shaft one; 8. Connecting shaft two; 9. Upper transmission belt; 10. Fixing frame; 11. Slide rail one; 12. Lower transmission belt; 13. Rotating shaft; 14. Pulley block; 15. Limiting rod; 16. Telescopic block; 17. Return spring; 18. Slide rail two; 19. Baffle; 20. Clamping block; 21. Cam; 22. Fixing bracket; 23. Screw; 24. Sealing plate; 25. Threaded sleeve; 26. Locking rod; 27. Groove; 28. Connecting block. Detailed Implementation

[0034] Please see Figure 1-12 This invention provides a technical solution: a waste gas treatment device for a painting workshop, comprising a housing 1, an air inlet 2 at the front end of the housing 1, an exhaust outlet 3 at the rear end of the housing 1, two limiting frames 4 inclinedly arranged inside the housing 1, and an inner frame 5 containing a plurality of activated carbon blocks 6 slidably arranged inside each of the two limiting frames 4, and further comprising:

[0035] The flipping mechanism includes a first docking shaft 7 fixed to the top two side walls of the limiting frame 4, and a second docking shaft 8 fixedly connected to the bottom two side walls of the limiting frame 4. An upper transmission belt 9 for actuating the first docking shaft 7 is rotatably arranged inside the top of the air inlet 2, and a lower transmission belt 12 for actuating the second docking shaft 8 is rotatably arranged inside the bottom of the air inlet 2. A limiting component is also provided inside the air inlet 2, which is used to flip the two limiting frames 4 by an angle so that they do not interfere with each other when sliding inside the air inlet 2.

[0036] See Figures 1-2 , Figure 6 Two limiting frames 4 are placed inside the box 1 at a certain angle. The exhaust gas enters the box 1 from the air inlet 2, and after being filtered and adsorbed by the activated carbon block 6, it is discharged from the exhaust port 3. Compared with the horizontally placed limiting frames 4 in the traditional method, the activated carbon block 6 has a larger contact surface with the flowing exhaust gas, thus fully filtering the exhaust gas.

[0037] by Figure 2As shown, the upper transmission belt 9 rotates counterclockwise, which, together with the lower transmission belt 12 rotating clockwise, pushes the limiting frame 4 to swap positions inside the housing 1. Under the action of the flipping mechanism, the two limiting frames 4 flip towards different positions simultaneously during the displacement process, so that the two limiting frames 4 do not interfere with each other until their positions are swapped. The purpose of this is to swap the limiting frame 4 located on the side of the air inlet 2 with the limiting frame 4 located on the side of the exhaust outlet 3, because the surface of the limiting frame 4 near the air inlet 2 has much more impurities adsorbed than the limiting frame 4 near the exhaust outlet 3. By swapping their positions, the amount of impurities adsorbed on the surface of the limiting frames 4 in different positions is neutralized and balanced, which can extend the service life of the limiting frame 4 inside the housing 1.

[0038] As a further embodiment of the present invention, the limiting component includes a slide rail 11 fixed inside the air inlet 2 for sliding docking with the docking shaft 7. A limiting rod 15 is fixedly connected inside the air inlet 2 at the top of the slide rail 11. A telescopic block 16 is slidably provided at the front end of the limiting rod 15. A reset spring 17 for resetting the telescopic block 16 is fixedly connected inside the air inlet 2. A paddle block 14 for moving the docking shaft 7 is fixedly connected on the upper transmission belt 9.

[0039] The inner sidewall of the air inlet 2 is fixedly connected to a slide rail 2 18. A cam 21 for rolling contact with the slide rail 2 18 is rotatably connected to the docking shaft 2 8. A clamping block 20 for clamping the docking shaft 2 8 is fixedly connected to the lower transmission belt 12. A rotating shaft 13 is rotatably connected to one side of the bottom of the slide rail 2 18. A torsion spring for resetting is fixedly connected at the rotation center of the rotating shaft 13.

[0040] See Figures 2-8 When the upper drive belt 9 rotates counterclockwise, it pushes the docking shaft 7 to slide along the limiting rod 15 via the lever 14; during this process, the lower drive belt 12 rotates clockwise, pushing the docking shaft 8 upward through the inclined surface inside the clamping block 20, gradually disengaging from the clamping block 20, so that only the top of the limiting frame 4 is restricted to the upper drive belt 9 and the limiting rod 15 by the docking shaft 7, and moves along the slide rail 18 as pushed by the lever 14. Figure 12 The flipping of E shown, and the gradual pushing of the toggle 14, causes the limiting frame 4 to gradually slide along the slide rail 18. Figure 12 At position F, after the lever 14 rotates for one cycle, the limiting frame 4 moves from the end of the air inlet 2 to the position shown by the limiting frame 4 at the end of the exhaust port 3, and the docking shaft 2 8 re-enters the clamping block 20.

[0041] The above process involves the limiting frame 4 at the air inlet 2 moving to the exhaust outlet 3. Simultaneously, the limiting frame 4 at the exhaust outlet 3 rotates with the upper transmission belt 9, causing the top docking shaft 7 to rotate to the top of 11 and disengage from the contact block 14. Meanwhile, the bottom docking shaft 8 is lifted up as the clamping block 20 slides. However, due to the limiting of the bottom of the slide rail 18 (which can only rotate downwards) on the docking shaft 8, it cannot disengage from the clamping block 20. Thus, it slides synchronously with the rotation of the clamping block 20, causing the bottom of the limiting frame 4 at the exhaust outlet 3 to... The second connecting shaft 8 slides horizontally, while the first connecting shaft 7 slides along the first slide rail 11. When the second connecting shaft 8 slides to the end of the air inlet 2, the first connecting shaft 7 slides along the first slide rail 11 to the top and contacts the bottom inclined surface of the telescopic block 16. As the second connecting shaft 8 slides, the first connecting shaft 7 gradually pushes the telescopic block 16 along the first slide rail 11 to compress the return spring 17. After the return spring 17 pushes the telescopic block 16 to reset, the first connecting shaft 7 moves to the top of the telescopic block 16, thus completing the position cycle of the limit frame 4 at the air inlet 2 and the exhaust port 3.

[0042] It should be noted that, see Figure 4 The lengths of docking shaft 1 7 and docking shaft 2 8 are different. The sliding docking position of docking shaft 1 7 with slide rail 1 11 is different from the sliding docking position of docking shaft 2 8 with slide rail 2 18. That is, slide rail 1 11 and slide rail 2 18 are not on the same vertical plane. In this way, the limiting frame 4 at the end of the air inlet 2 will not interfere with the sliding of the limiting frame 4 at the end of the exhaust outlet 3 during the sliding process.

[0043] As a further embodiment of the present invention, a sealing plate 24 is connected to one side of the inner frame 5, and a fixing frame 22 is fixedly connected to one side of the sealing plate 24. A screw 23 is fixedly connected to the fixing frame 22. One end of the screw 23 passes through the sealing plate 24 and is disposed outside the sealing plate 24. A threaded sleeve 25 is slidably connected inside the sealing plate 24 and is helically sleeved outside the screw 23. A groove 27 for docking with the threaded sleeve 25 is provided on the side wall of the inner frame 5. A docking block 28 is slidably connected inside the groove 27. A strong spring for resetting the docking block 28 is fixedly connected inside the inner frame 5. Locking rods 26 are slidably connected inside both sides of the groove 27. A wedge block is fixedly connected to one side of the docking block 28. The wedge block fits against the locking rod 26.

[0044] See Figures 9-11Connect the threaded sleeve 25 to the slot 27, and the sealing plate 24 to the side wall of the inner frame 5. Rotate the threaded sleeve 25 and gradually slide it into the slot 27 along the screw 23, pushing the docking block 28 to slide. The docking block 28 then pushes the locking rods 26 on both sides to slide into the slot 27, squeezing the side wall of the threaded sleeve 25 and fixing it inside the slot 27. This will fix the inner frame 5 and the fixing frame 22 into a whole. The inner frame 5 can be removed from the limiting frame 4 through the fixing frame 22. However, when the limiting frame 4 is displaced inside the air inlet 2, first rotate the threaded sleeve 25 to disengage it from the slot 27. After the position of the limiting frame 4 is reversed, rotate the threaded sleeve 25 again to connect it with the inner frame 5.

[0045] As a further embodiment of the present invention, a protruding plate is fixedly connected to the top of the limiting rod 15, and a slot for docking with the protruding plate is provided on the docking shaft 7. The docking of the protruding plate with the slot makes the docking shaft 7 more stable when sliding along the limiting rod 15.

[0046] As a further embodiment of the present invention, a fixed frame 10 symmetrical to the limiting frame 4 is fixedly connected inside the air inlet 2. Several activated carbon blocks 6 are installed inside the fixed frame 10. The fixed frame 10 enhances the filtration effect inside the box 1. The activated carbon blocks 6 inside the fixed frame 10 installed in the middle section of the box 1 have a smaller filtration difference compared to the activated carbon blocks 6 at both ends, and there is no need to change their positions.

[0047] As a further embodiment of the present invention, baffles 19 for restricting the flow of exhaust gas are fixedly connected to the upper and lower sides of the air inlet 2.

[0048] See Figure 2 The baffle 19 restricts the flow of exhaust gas from the inside of the box 1 on the upper and lower sides of the limiting frame 4, thereby enhancing the filtration effect of the exhaust gas.

[0049] As a further embodiment of the present invention, the inner side of the limiting frame 4 can be completely fitted with the outer wall of the inner frame 5, and the bottom of the inner frame 5 is fixedly connected with a roller for rolling contact with the limiting frame 4. The roller makes the friction of the inner frame 5 when sliding displacement inside the limiting frame 4 smaller, which makes it easier to load and unload the inner frame 5 from the limiting frame 4.

[0050] As a further embodiment of the present invention, a connecting groove is provided on the side wall of the housing 1 for docking with the sealing plate 24. The connecting groove allows the sealing plate 24 to be restricted to the surface of the housing 1 after docking with the housing 1. When the threaded sleeve 25 disengages from the groove 27, the sealing plate 24 can still be located on the surface of the housing 1.

[0051] Working principle: Two limiting frames 4 are placed inside the housing 1 at a certain angle. Exhaust gas enters the housing 1 through the air inlet 2, is filtered and adsorbed by the activated carbon block 6, and is discharged from the exhaust port 3.

[0052] When the positions of the limiting frame 4 are reversed, the upper transmission belt 9 rotates counterclockwise, pushing the docking shaft 7 along the limiting rod 15 via the lever 14; during this process, the lower transmission belt 12 rotates clockwise, pushing the docking shaft 8 upward through the inclined surface inside the clamping block 20, gradually disengaging from the clamping block 20, so that only the top of the limiting frame 4 is restricted inside the upper transmission belt 9 and the limiting rod 15 by the docking shaft 7, and moves along the slide rail 18 as pushed by the lever 14. Figure 12 The flipping of E shown, and the gradual pushing of the toggle 14, causes the limiting frame 4 to gradually slide along the slide rail 18. Figure 12 At position F, after the lever 14 rotates for one cycle, the limiting frame 4 moves from the end of the air inlet 2 to the position shown by the limiting frame 4 at the end of the exhaust port 3, and the docking shaft 2 8 re-enters the clamping block 20.

[0053] At the same time, the limiting frame 4 at the exhaust port 3 rotates with the upper transmission belt 9, and the top docking shaft 7 rotates to the top of 11 and disengages from the contact with the lever block 14. Meanwhile, the bottom docking shaft 8 is lifted up as the clamp block 20 slides. However, due to the limitation of the bottom of the slide rail 18, which can only rotate downwards, the docking shaft 8 cannot be disengaged from the inside of the clamp block 20. Thus, it slides synchronously with the rotation of the clamp block 20, causing the bottom docking shaft 8 at the limit frame 4 at the exhaust port 3 to slide horizontally, while the docking shaft 7 slides along the slide rail 11. When the docking shaft 8 slides to the air inlet 2, the docking shaft 7 slides along the slide rail 11 to the top and contacts the bottom inclined surface of the telescopic block 16. As the docking shaft 8 slides, the docking shaft 7 gradually pushes the telescopic block 16 along the slide rail 11 to compress the return spring 17. After the return spring 17 pushes the telescopic block 16 to reset, the docking shaft 7 moves to the top of the telescopic block 16, thus completing the position cycle of the limiting frame 4 at the air inlet 2 and the exhaust port 3.

Claims

1. A waste gas treatment device for a painting workshop, comprising a housing (1), wherein an air inlet (2) is provided at the front end of the housing (1) and an exhaust outlet (3) is provided at the rear end of the housing (1), characterized in that: The box body (1) is internally inclined with two limiting frames (4), and each of the two limiting frames (4) is internally slidably provided with an inner frame (5) containing a number of activated carbon blocks (6), and also includes: The flipping mechanism includes a first docking shaft (7) fixed to the top two side walls of the limiting frame (4), and a second docking shaft (8) fixedly connected to the bottom two side walls of the limiting frame (4). An upper transmission belt (9) for moving the first docking shaft (7) is rotatably provided inside the top of the air inlet (2), and a lower transmission belt (12) for moving the second docking shaft (8) is rotatably provided inside the bottom of the air inlet (2). A limiting component is also provided inside the air inlet (2). The limiting component is used to flip the two limiting frames (4) by an angle so that they do not interfere with each other when sliding inside the air inlet (2). The limiting assembly includes a slide rail (11) fixed inside the air inlet (2) for sliding docking with the docking shaft (7). A limiting rod (15) is fixedly connected inside the air inlet (2) at the top of the slide rail (11). A telescopic block (16) is slidably provided at the front end of the limiting rod (15). A reset spring (17) for resetting the telescopic block (16) is fixedly connected inside the air inlet (2). A paddle (14) for moving the docking shaft (7) is fixedly connected on the upper transmission belt (9). The air inlet (2) has a slide rail (18) fixedly connected to its inner side wall. A cam (21) for rolling contact with the slide rail (18) is rotatably connected to the docking shaft (8). A clamp (20) for holding the docking shaft (8) is fixedly connected to the lower transmission belt (12). A rotating shaft (13) is rotatably connected to one side of the bottom of the slide rail (18). A torsion spring for resetting is fixedly connected at the rotation center of the rotating shaft (13).

2. The waste gas treatment device for a painting workshop according to claim 1, characterized in that: One side of the inner frame (5) is connected to a sealing plate (24), and one side of the sealing plate (24) is fixedly connected to a fixing frame (22). A screw (23) is fixedly connected to the fixing frame (22). One end of the screw (23) passes through the sealing plate (24) and is located outside the sealing plate (24). A threaded sleeve (25) is slidably connected inside the sealing plate (24) and screwed around the outside of the screw (23). A slot (27) for docking with the threaded sleeve (25) is provided on the side wall of the inner frame (5). A docking block (28) is slidably connected inside the slot (27). A strong spring for resetting the docking block (28) is fixedly connected inside the inner frame (5). Locking rods (26) are slidably connected inside both sides of the slot (27). A wedge block is fixedly connected to one side of the docking block (28). The wedge block fits against the locking rod (26).

3. The waste gas treatment device for a painting workshop according to claim 1, characterized in that: The top end of the limiting rod (15) is fixedly connected to a protruding plate, and the docking shaft (7) is provided with a slot for docking with the protruding plate.

4. The waste gas treatment device for a painting workshop according to claim 1, characterized in that: The air inlet (2) is fixedly connected to a fixed frame (10) that is symmetrical to the direction of the limiting frame (4), and a number of activated carbon blocks (6) are installed inside the fixed frame (10).

5. The waste gas treatment device for a painting workshop according to claim 1, characterized in that: The air inlet (2) has baffles (19) fixedly connected to its upper and lower sides to restrict the flow of exhaust gas.

6. The waste gas treatment device for a painting workshop according to claim 1, characterized in that: The interior of the limiting frame (4) can be completely fitted with the outer wall of the inner frame (5), and the bottom of the inner frame (5) is fixedly connected with a roller for rolling docking with the limiting frame (4).

7. The waste gas treatment device for a painting workshop according to claim 2, characterized in that: The side wall of the box (1) is provided with a connecting groove for docking with the sealing plate (24).

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