A treatment device for VOC waste gas

Abstract

The present application relates to the field of waste gas treatment equipment, and in particular to a treatment equipment for VOC waste gas, including a spray tower and an adsorption box, a gas transmission pipe is connected between the top side of the spray tower and one side of the adsorption box, an exhaust pipe is fixedly installed on the side of the adsorption box away from the spray tower, an adsorption box is arranged inside the adsorption box, the adsorption box is provided with a plurality of first air holes for VOC waste gas to pass through, an activated carbon layer is arranged inside the adsorption box, a take-in and put-out port for the adsorption box to be placed is opened on one side of the adsorption box, a cover plate is fixedly installed on the side of the adsorption box facing the outside of the adsorption box, and is characterized in that: a first sealing ring is fixedly installed along the edge of the take-in and put-out port on the side of the adsorption box close to the cover plate, a plurality of rotating tubes are arranged on the peripheral side of the cover plate, the rotating tube is rotatably plugged into the side of the adsorption box close to the cover plate, a limit block is fixedly installed on the rotating tube, and the limit block is used to press against the side of the cover plate away from the adsorption box. The present application has the effect of reducing the time for replacing the activated carbon layer.

Description

Technical Field

[0001] The present application relates to the field of waste gas treatment equipment, and in particular to a treatment equipment for VOC waste gas. Background Art

[0002] VOC is the abbreviation of volatile organic compounds. VOC waste gas refers to waste gas containing volatile organic compounds. The solvents or additives used in the production process of foam boards may produce VOC waste gas. VOC waste gas will pollute the air and affect human health, so VOC waste gas needs to be treated before discharge.

[0003] At present, the related art discloses a treatment device for VOC waste gas, including a spray tower and an adsorption box, and a gas pipeline is connected between the top side of the spray tower and one side of the adsorption box. An exhaust pipe is fixedly installed on the side of the adsorption box away from the spray tower. An adsorption box is arranged inside the adsorption box, and the adsorption box is provided with a plurality of air holes for the exhaust gas to pass through, and an activated carbon layer is arranged inside the adsorption box. A take-in and put-out port for the adsorption box to be placed is arranged on one side of the adsorption box, and a cover plate is fixedly installed on the side of the adsorption box facing the outside of the adsorption box, and a sealing ring and a plurality of screws are fixedly installed along the edge of the take-in and put-out port on the side of the adsorption box close to the cover plate, and nuts are matched with the screws. The cover plate is provided with a mounting hole for the screw to pass through. After the exhaust gas is sent to the spray tower for preliminary treatment, the VOC exhaust gas enters the interior of the adsorption box from the gas pipeline, absorbs VOC through the activated carbon layer, thereby reducing the VOC content in the VOC exhaust gas, so that the VOC exhaust gas meets the emission standards. After that, the VOC exhaust gas that meets the emission standards is discharged from the exhaust pipe. When the activated carbon layer needs to be replaced, the nut is removed from the screw rod, and then the adsorption box is taken out from the access port for replacement. After the activated carbon layer inside the adsorption box is replaced, the adsorption box is put back into the adsorption box from the access port. After the adsorption box enters the adsorption box, the nut is screwed into the screw rod, and the nut presses the cover plate against the adsorption box.

[0004] In the above-mentioned related technologies, the size of the cover plate is large, and the number of nuts and screws required to press the cover plate is large. At the same time, the number of turns required to screw the nut in or out of the screw is large, thereby increasing the time required to replace the activated carbon layer. Summary of the invention

[0005] In order to reduce the time for replacing the activated carbon layer, the present application provides a treatment device for VOC waste gas.

[0006] The present application provides a VOC waste gas treatment device, which adopts the following technical solution:

[0007] A treatment device for VOC waste gas, comprising a spray tower and an adsorption box, wherein an air supply pipe is connected between the top side of the spray tower and one side of the adsorption box, an exhaust pipe is fixedly installed on the side of the adsorption box away from the spray tower, an adsorption box is arranged inside the adsorption box, the adsorption box is provided with a plurality of first air holes for VOC waste gas to pass through, an activated carbon layer is arranged inside the adsorption box, a receiving and releasing port for the adsorption box to be placed is opened on one side of the adsorption box, a cover plate is fixedly installed on the side of the adsorption box facing the outside of the adsorption box, a first sealing ring is fixedly installed on the side of the adsorption box close to the cover plate along the edge of the receiving and releasing port, a plurality of rotating tubes are arranged on the peripheral side of the cover plate, the rotating tubes are rotatably inserted into the side of the adsorption box close to the cover plate, a limiting block is fixedly installed on the rotating tube, and the limiting block is used to tightly abut against the side of the cover plate away from the adsorption box.

[0008] By adopting the above technical solution, when the activated carbon layer needs to be replaced, the limit block is rotated to allow the limit block to loosen the cover plate, and then the adsorption box is pulled out from the inside of the adsorption box through the cover plate, so as to facilitate the replacement of the activated carbon layer. After the activated carbon layer inside the adsorption box is replaced, the adsorption box is placed into the adsorption box from the access port. Then press the cover plate close to the adsorption box, and rotate the limit block to press the cover plate. When each limit block is located on the side of the cover plate away from the adsorption box and is pressed, the cover plate is loosened, and the first sealing ring drives the cover plate and the pressing block to press against each other. Compared with screwing the nut in or out of the screw to press the cover plate, the number of turns of the limit block is less, thereby reducing the time for replacing the activated carbon layer.

[0009] Optionally, there are multiple adsorption boxes, and the multiple adsorption boxes are spaced apart in the height direction, and the first air vents are located at the top and bottom sides of the adsorption box. A support plate is provided on the bottom side of each adsorption box, and the support plate is provided with multiple second air vents for VOC waste gas to pass through. The support plate is fixedly installed on the inner wall of the adsorption box, and the multiple support plates divide the interior of the adsorption box into multiple waste gas channels, one end of the waste gas channel faces the gas supply pipe, and the other end of the waste gas channel faces the exhaust pipe. Shielding plates are alternately provided at both ends of the multiple waste gas channels from top to bottom, and the shielding plates are fixedly installed on the support plate and the inner wall of the adsorption box, and the shielding plates are against the side walls of the adsorption box.

[0010] By adopting the above technical solution, the VOC waste gas will first enter one waste gas channel by alternately blocking the two ends of the waste gas channel from top to bottom through the shielding plate. Then the VOC waste gas is blocked by the shielding plate, and the VOC waste gas diffuses upward and downward, so that the VOC waste gas flows to other waste gas channels, and the activated carbon adsorption layer adsorbs the VOC in the VOC waste gas, and then the VOC waste gas is discharged from the exhaust pipe. When the VOC waste gas flows to other waste gas channels, the VOC waste gas will diffuse and pass through the activated carbon layer, so that the activated carbon layer is fully in contact with the VOC waste gas, thereby improving the filtering effect of the activated carbon layer on the VOC waste gas.

[0011] Optionally, a limit plate is fixedly installed on the inner wall of the adsorption box on the side away from the cover plate, and the limit plate is abutted against the top side of the adsorption box. A second sealing ring is embedded on the top surface of the support plate, and the first air hole and the second air hole are both located in the area enclosed by the second sealing ring.

[0012] By adopting the above technical solution, the limiting plate limits the adsorption box, so that the adsorption box can be pressed against the second sealing ring. The second sealing ring plays a sealing role, thereby reducing the situation where VOC waste gas passes through the gap between the adsorption box and the support plate and enters the exhaust pipe.

[0013] Optionally, the first sealing ring is a hollow structure, and the first sealing ring is equipped with an inflation and deflation component, and the inflation and deflation component is used to inflate and deflate the first sealing ring.

[0014] By adopting the above technical solution, when the limit block is rotated to press the cover plate, or when the limit block is rotated to loosen the cover plate, the inflation and deflation assembly releases the gas in the first sealing ring, thereby loosening the cover plate and the limit block, thereby facilitating the rotation of the limit block.

[0015] Optionally, the inflation and deflation assembly includes multiple first airbags and a pressure block, the first airbag is fixedly mounted on a side of the first sealing ring close to the adsorption box, the adsorption box is provided with multiple grooves on a side close to the cover plate, and a sealing block is detachably installed at the notch of the groove, the sealing block is provided with a through hole for the first airbag and the rotating tube to pass through, the rotating tube sleeve is provided with two limiting rings, the two limiting rings are clamped on the sealing block, the pressure block is installed on the tube body of the rotating tube, the pressure block is located inside the groove, and the rotation of the rotating tube drives the pressure block to squeeze the first airbag.

[0016] By adopting the above technical solution, when the limit block is rotated to press the cover plate, the rotating tube drives the pressing block to squeeze the first airbag, so that the gas inside the first airbag enters the first sealing ring. After the first sealing ring expands, it blocks the gap between the cover plate and the adsorption box, thereby reducing the leakage of VOC waste gas from the access port. As each limit block presses the cover plate, the more gas is inside the first sealing ring, the greater the pressure of the first sealing ring on the cover plate. The pressure of the first sealing ring on the cover plate increases with the number of limit blocks pressing the cover plate, thereby reducing the influence of the first sealing ring on the rotation of the limit block after it presses against the cover plate.

[0017] When the rotation limit block loosens the cover plate, the rotation tube drives the pressing block to loosen the first airbag, so that the gas inside the sealing ring enters the first airbag, and the pressing force between the first sealing ring and the cover plate is reduced. As the number of limit blocks that loosen the cover plate increases, the pressing force between the first sealing ring and the cover plate gradually decreases, so that the resistance to the rotation limit block gradually decreases.

[0018] Optionally, the pressure block is fixedly installed with a sliding sleeve, and the sliding sleeve is slidingly sleeved on a rotating tube. The inner wall of the sliding sleeve is key-connected to the tube body of the rotating tube. A first anti-rotation block is fixedly installed on the end of the sliding sleeve away from the limit block. A rotating groove for the first anti-rotation block to pass through is provided at the bottom of the groove. A second anti-rotation block is fixedly installed at the bottom of the rotating groove. The first anti-rotation block and the second anti-rotation block abut against each other to limit the rotation of the sliding sleeve.

[0019] By adopting the above technical solution, when the rotating tube belt pressing block squeezes the first airbag, the first airbag exerts a reaction force on the pressing block, so that the sliding sleeve drives the first anti-rotation block to press against the second anti-rotation block. When the first anti-rotation block presses against the second anti-rotation block, the rotation resistance of the sliding sleeve increases, thereby increasing the rotation resistance of the rotating tube. By increasing the rotation resistance of the rotating tube, the automatic rotation of the pressing block after being squeezed by the first airbag is reduced, so that the pressing block releases the first airbag.

[0020] Optionally, a key block is fixedly installed on the inner wall of the sliding sleeve, and the tube body of the rotating tube is provided with a key opening for the key block to slide. When the key block slides to the end of the key opening away from the limit block, the first anti-rotation block abuts against the second anti-rotation block, and a pull block is provided at the end of the rotating tube close to the limit block. A pull rope is provided inside the rotating tube, and the pull rope is connected between the pull block and the key block.

[0021] By adopting the above technical solution, when it is necessary to rotate the limit block away from the cover plate, the pull block is pulled, and the pull block drives the sliding sleeve away from the second anti-rotation block through the key block, so that the first anti-rotation block and the second anti-rotation block are separated. The first anti-rotation block and the second anti-rotation block are separated, thereby reducing the rotation resistance of the sliding sleeve, thereby facilitating the rotation of the limit block away from the cover plate.

[0022] Optionally, a plurality of first clamping blocks are fixedly installed on one side of the first anti-rotation block close to the second anti-rotation block, and a plurality of second clamping blocks are fixedly installed on one side of the second anti-rotation block close to the first anti-rotation block. The first clamping blocks and the second clamping blocks are both arranged around the central axis of the rotating tube, and the space between two adjacent first clamping blocks is for the second clamping blocks to enter, and the space between two adjacent second clamping blocks is for the first clamping blocks to enter.

[0023] By adopting the above technical solution, after the first anti-rotation block and the second anti-rotation block abut against each other, the first clamping block and the second clamping block are plugged into each other, thereby facilitating increasing the rotation resistance of the rotating tube and further reducing the occurrence of anti-rotation of the rotating tube.

[0024] Optionally, when the rotating tube drives the pressing block to squeeze the first airbag, the side where the first clamping block and the second clamping block squeeze each other is tilted to move the first clamping block out from between two adjacent second clamping blocks.

[0025] By adopting the above technical solution, when the limit block is rotated to the side of the cover plate away from the adsorption box, the first card block is guided by the inclined side where the first card block and the second card block abut against each other, so that the first card block is pulled out from between two adjacent second card blocks. In the process of rotating the limit block to the side of the cover plate away from the adsorption box, the first card block is repeatedly inserted and pulled out from between two adjacent second card blocks, so that it is convenient to rotate the limit block to the side of the cover plate away from the adsorption box.

[0026] Optionally, the inflation and deflation assembly includes a second airbag, a driving rod and a pressure plate. A placement groove for placing the second airbag is opened on the side of the adsorption box close to the cover plate. The driving rod is threaded through the cover plate. The end of the driving rod close to the second airbag is rotatably inserted into the pressure plate, and the pressure plate is slidably inserted into the placement groove.

[0027] By adopting the above technical solution, the driving rod is rotated, and the driving rod drives the pressure plate to squeeze or release the second airbag, so that the gas inside the second airbag enters and exits the first sealing ring, thereby facilitating the inflation and deflation of the first sealing ring.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] When replacing the activated carbon layer, the adsorption box needs to be taken out from the adsorption box for replacement, and then the adsorption box is placed into the adsorption box from the access port. When taking out and placing the adsorption box, each limit block needs to be turned to press or loosen the cover plate. Compared with screwing the nut into the screw rod and letting the nut press or loosen the cover plate, the number of turns required to press the cover plate by turning each limit block is less, thereby reducing the time for replacing the activated carbon layer;

[0030] When the limit block is rotated to press the cover plate, the press block presses the first airbag, and the air inside the first airbag enters the first sealing ring. The first sealing ring expands and presses the cover plate, thereby reducing the leakage of VOC gas from the access port. At the same time, the pressing force of the first sealing ring on the cover plate increases with the increase in the number of limit blocks pressing the cover plate, that is, most of the limit blocks are subject to little resistance from the cover plate when rotating, thereby facilitating the rotation of the limit block to press the cover plate;

[0031] When the rotating limit block loosens the cover plate, the pressure block loosens the first airbag, and the air inside the first sealing ring enters the first airbag. The first sealing ring loosens the cover plate, and the pressing force of the first sealing ring on the cover plate decreases as the number of limit blocks that loosen the cover plate increases. That is, after some of the limit blocks are rotated to loosen the cover plate, the resistance of other limit blocks to the cover plate when they rotate is small, thereby facilitating the rotating limit block to loosen the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0033] Figure 2 This is a schematic diagram of the structure of the adsorption box in Example 1 of the present application;

[0034] Figure 3 yes Figure 2 Sectional view at AA;

[0035] Figure 4 yes Figure 2 Cross-sectional view at BB;

[0036] Figure 5 is an exploded view between the adsorption box and the support plate of Example 1 of the present application;

[0037] Figure 6 This is an exploded view between the first sealing ring and the adsorption box in Example 1 of the present application;

[0038] Figure 7 yes Figure 4 A magnified view at point A;

[0039] Figure 8 yes Figure 1 Enlarged view at B;

[0040] Fig. 9 is an exploded view between the rotating tube and the blocking plate of Example 1 of the present application;

[0041] Fig.10 is a schematic structural diagram of an adsorption box according to Example 2 of the present application;

[0042] Fig.11 yes Fig.10 Enlarged view at C.

[0043] Explanation of reference numerals: 1, spray tower; 2, adsorption box; 3, air pipe; 4, exhaust pipe; 5, adsorption box; 6, activated carbon layer; 7, first air hole; 8, second air hole; 9, support plate; 10, shielding plate; 11, exhaust gas channel; 12, first sealing ring; 13, second sealing ring; 14, limit plate; 15, access port; 16, cover plate; 17, rotating tube; 18, limit block; 19, air guide tube; 20, charging and discharging group Parts; 201, first airbag; 202, pressure block; 203, second airbag; 204, drive rod; 205, pressure plate; 21, groove; 22, blocking block; 23, through hole; 24, limiting ring; 25, sliding sleeve; 26, key block; 27, key mouth; 28, first anti-rotation block; 29, second anti-rotation block; 30, rotating groove; 31, pull block; 32, pull rope; 33, first clamping block; 34, second clamping block; 35, placement groove. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-11 This application is described in further detail. Example 1

[0045] The embodiment of the present application discloses a treatment device for VOC waste gas.

[0046] Reference Figure 1 , a treatment device for VOC waste gas, including a spray tower 1 and an adsorption box 2. A gas pipe 3 is fixedly connected between the top side of the spray tower 1 and one side of the adsorption box 2. The VOC waste gas is passed into the spray tower 1, and the spray tower 1 sprays adsorption liquid to perform preliminary treatment on the VOC waste gas. Then the VOC waste gas enters the adsorption box 2 from the gas pipe 3.

[0047] Reference Figure 1 An exhaust pipe 4 is fixedly installed on the side of the adsorption box 2 away from the spray tower 1. After the VOC waste gas is further treated inside the adsorption box 2 to reduce the VOC content, the VOC waste gas meets the emission standards and is then discharged from the exhaust pipe 4.

[0048] Reference Figure 2 , Figure 3 A plurality of adsorption boxes 5 are arranged inside the adsorption box 2, and an activated carbon layer 6 is arranged inside the adsorption box 5. The adsorption box 5 is provided with a plurality of first air holes 7. The VOC waste gas enters the adsorption box 5 from the first air holes 7, and then the VOC waste gas contacts the activated carbon layer 6, and the activated carbon layer 6 adsorbs the VOC, thereby reducing the VOC content in the VOC waste gas.

[0049] In another embodiment, a plurality of adsorption boxes 5 are arranged at intervals along the direction from the gas supply pipe 3 to the exhaust pipe 4 , and the first air holes 7 are opened on both sides of the adsorption box 5 close to the gas supply pipe 3 and the exhaust pipe 4 .

[0050] Reference Figure 4 In the embodiment of the present application, a plurality of adsorption boxes 5 are arranged at intervals from top to bottom. The first air holes 7 are provided on the top and bottom sides of the adsorption box 5. A support plate 9 is provided on the bottom side of each adsorption box 5, and the support plate 9 is fixedly mounted on the inner wall of the adsorption box 2. The support plate 9 is provided with a plurality of second air holes 8 for the VOC waste gas to pass through.

[0051] Reference Figure 3 , Figure 5 The support plate 9 is fixedly mounted on the inner wall of the adsorption box 2, and the plurality of support plates 9 divide the interior of the adsorption box 2 into a plurality of exhaust gas channels 11 from bottom to top. One end of the exhaust gas channel 11 faces the gas delivery pipe 3, and the other end of the exhaust gas channel 11 faces the exhaust pipe 4. Shielding plates 10 are alternately arranged at both ends of the plurality of exhaust gas channels 11 from top to bottom, and the shielding plates 10 are fixedly mounted on the support plate 9 and the inner wall of the adsorption box 2, and the shielding plates 10 are abutted against the side wall of the adsorption box 5.

[0052] After the VOC waste gas enters one waste gas channel 11, it is blocked by the shielding plate 10, and the VOC waste gas diffuses upward and downward and enters other waste gas channels 11 from the second air permeable hole 8. When the VOC waste gas diffuses into other waste gas channels 11, the activated carbon adsorption layer adsorbs the VOC in the VOC waste gas. The VOC waste gas diffuses and passes through the activated carbon layer 6, so that the activated carbon layer 6 is fully in contact with the VOC waste gas, thereby improving the filtering effect of the activated carbon layer 6 on the VOC waste gas.

[0053] Reference Figure 5 , Figure 6 The top surface of the support plate 9 is embedded with a second sealing ring 13, and the first air hole 7 and the second air hole 8 are both located in the area where the second sealing ring 13 is located. The second sealing ring 13 is used to block the VOC waste gas, thereby reducing the leakage of the gap between the adsorption box 5 and the support plate 9. The inner wall of the adsorption box 2 is fixedly installed with a limit plate 14, which presses the top side of the adsorption box 5, thereby reducing the second sealing ring 13 from lifting the adsorption box 5.

[0054] Reference Figure 4 , Figure 6 A plurality of access openings 15 are provided on one side of the adsorption box 2 away from the limiting plate 14, and the access openings 15 are aligned with the adsorption boxes 5 one by one. A cover plate 16 is fixedly installed on the side of the adsorption box 5 facing the outside of the adsorption box 2. The access openings 15 facilitate placing the adsorption box 5 into the adsorption box 2 or taking the adsorption box 5 out of the adsorption box 2.

[0055] Reference Figure 6 , Figure 7A first sealing ring 12 is fixedly installed on one side of the adsorption box 2 near the cover plate 16 along the edge of the access port 15. The first sealing ring 12 blocks the gap between the cover plate 16 and the adsorption box 2, thereby reducing the leakage of VOC waste gas from the gap between the cover plate 16 and the adsorption box 2 after the VOC waste gas leaks from the access port 15.

[0056] Reference Figure 7 , Figure 8 , a plurality of rotating tubes 17 are arranged around the cover plate 16, and the rotating tubes 17 are rotatably plugged into the side of the adsorption box 2 close to the cover plate 16, and a limiting block 18 is fixedly installed on the end of the rotating tube 17 away from the adsorption box 2. The limiting block 18 is rotated to move to the side of the cover plate 16 away from the adsorption box 2, and the limiting block 18 squeezes the cover plate 16, so that the cover plate 16 presses the first sealing ring 12, thereby improving the sealing effect. The limiting block 18 is rotated away from the cover plate 16, and the limiting block 18 loosens the cover plate 16, so that it is convenient to take the adsorption box 5 out of the adsorption box 2 through the cover plate 16.

[0057] Reference Figure 6 , Figure 7 The first sealing ring 12 and the second sealing ring 13 are both hollow structures, and an air guide tube 19 is connected between the first sealing ring 12 and the second sealing ring 13. The first sealing ring 12 is provided with an air charging and discharging component 20, which is used to charge and discharge the first sealing ring 12 and the second sealing ring 13.

[0058] Before the adsorption box 5 is placed into the adsorption box 2 from the access port 15, the gas-inflating and gas-deflating assembly 20 releases the gas in the first sealing ring 12 and the second sealing ring 13, thereby reducing the resistance of the adsorption box 5 to the first sealing ring 12 and the second sealing ring 13 when the adsorption box 5 is placed into the adsorption box 2. After that, after each stop block 18 is pressed against the cover plate 16, the gas-inflating and gas-deflating assembly 20 inflates the first sealing ring 12 and the second sealing ring 13, thereby expanding the first sealing ring 12 and the second sealing ring 13 to achieve a good sealing effect.

[0059] Reference Figure 7 Each rotating tube 17 corresponds to an air-inflating and air-deflating assembly 20 , and the air-inflating and air-deflating assembly 20 includes a first air bag 201 and a pressing block 202 . The first air bag 201 is fixedly connected to a side of the first sealing ring 12 close to the adsorption box 2 .

[0060] Reference Figure 7 , Figure 8A plurality of grooves 21 are provided on one side of the adsorption box 2 close to the cover plate 16, and the grooves 21 are arranged one by one corresponding to the rotating tubes 17. A blocking block 22 is provided at the notch of the groove 21, and the blocking block 22 is bolted to the notch of the groove 21, so as to facilitate the removal of the blocking block 22. The blocking block 22 is provided with a through hole 23 for the first airbag 201 and the rotating tube 17 to pass through, and the rotating tube 17 is sleeved with two limiting rings 24, and the two limiting rings 24 are clamped on the blocking block 22, so as to realize the rotating tube 17 to be rotated and plugged into the adsorption box 2.

[0061] The pressing block 202 is located inside the groove 21. The pressing block 202 is fixedly mounted with a sliding sleeve 25, and the sliding sleeve 25 is slidably sleeved on the rotating tube 17. A key block 26 is fixedly mounted on the inner wall of the sliding sleeve 25, and the tube body of the rotating tube 17 is provided with a key opening 27 for the sliding of the key block 26. The key block 26 cooperates with the key opening 27, so that the sliding sleeve 25 can slide on the rotating tube 17, and the sliding sleeve 25 rotates with the rotating tube 17.

[0062] When the rotation limit block 18 presses the cover plate 16, the limit block 18 drives the pressing block 202 to rotate through the rotating tube 17, and the pressing block 202 squeezes the first airbag 201, so that the gas inside the first airbag 201 enters the first sealing ring 12 and the second sealing ring 13. When the limit block 18 releases the cover plate 16, the pressing block 202 releases the first airbag 201, so that the gas inside the first sealing ring 12 and the second sealing ring 13 returns to the first airbag 201, thereby facilitating the inflation and deflation of the first sealing ring 12 and the second sealing ring 13.

[0063] Reference Figure 7 , Fig. 9 The first anti-rotation block 28 is fixedly installed at one end of the sliding sleeve 25 away from the limit block 18, and a rotation groove 30 for the first anti-rotation block 28 to pass through is provided at the bottom of the groove 21, and a second anti-rotation block 29 is fixedly installed at the bottom of the rotation groove 30. When the pressing block 202 squeezes the first airbag 201, the first airbag 201 applies a reaction force to the pressing block 202, and the pressing block 202 drives the sliding sleeve 25 to slide toward the second anti-rotation block 29, so that the first anti-rotation block 28 is tightly pressed against the second anti-rotation block 29. The rotation resistance of the sliding sleeve 25 is increased by the first anti-rotation block 28 and the second anti-rotation block 29 being tightly pressed against each other, thereby reducing the situation where the reaction force applied by the first airbag 201 drives the sliding sleeve 25 to rotate, thereby reducing the situation where the limit block 18 automatically loosens the cover plate 16.

[0064] Reference Figure 7 , Fig. 9A pull block 31 is provided at one end of the rotating tube 17 near the limit block 18, and a pull rope 32 is provided inside the rotating tube 17. The pull rope 32 is fixedly connected between the pull block 31 and the key block 26. When it is necessary to rotate the limit block 18 to loosen the cover plate 16, the pull block 31 is pulled, and the pull block 31 pulls the key block 26 through the pull rope 32, so that the sliding sleeve 25 moves away from the second anti-rotation block 29, thereby facilitating the separation of the first anti-rotation block 28 and the second anti-rotation block 29. After the first anti-rotation block 28 and the second anti-rotation block 29 are separated from each other, the rotation resistance of the sliding sleeve 25 is reduced, thereby facilitating the rotation of the limit block 18 to loosen the cover plate 16.

[0065] Reference Figure 7 , Fig. 9 A plurality of first clamping blocks 33 are fixedly installed on one side of the first anti-rotation block 28 close to the second anti-rotation block 29, and a plurality of second clamping blocks 34 are fixedly installed on one side of the second anti-rotation block 29 close to the first anti-rotation block 28. The first clamping blocks 33 and the second clamping blocks 34 are both arranged around the central axis of the rotating tube 17. The space between two adjacent first clamping blocks 33 is for the second clamping blocks 34 to enter, and the space between two adjacent second clamping blocks 34 is for the first clamping blocks 33 to enter.

[0066] When the rotating tube 17 drives the pressing block 202 to squeeze the first airbag 201, if the first clamping block 33 is aligned with the space between two adjacent second clamping blocks 34, the first clamping block 33 will be inserted between the two adjacent second clamping blocks 34. If the rotating tube 17 is driven to rotate, the pressing block 202 will further squeeze the first airbag 201, and one side of the first clamping block 33 and one side of the second clamping block 34 will squeeze each other. The side where the first clamping block 33 and the second clamping block 34 squeeze each other is inclined, so as to guide the first clamping block 33 to be pulled out from between the two adjacent second clamping blocks 34.

[0067] If the reaction force of the first airbag 201 drives the pressing block 202 to rotate and the pressing block 202 releases the first airbag 201, the other side of the first clamping block 33 and the other side of the second clamping block 34 will squeeze each other. The other side of the first clamping block 33 and the other side of the second clamping block 34 will be engaged with each other, thereby limiting the rotation of the pressing block 202, thereby reducing the possibility that the pressing block 202 rotates and releases the first airbag 201 under the reaction force of the first airbag 201.

[0068] The implementation principle of a treatment device for VOC waste gas in an embodiment of the present application is as follows: when the activated carbon layer 6 needs to be replaced, the pull block 31 is pulled, and the pull block 31 drives the sliding sleeve 25 away from the second anti-rotation block 29 through the pull rope 32 and the key block 26, so that the first anti-rotation block 28 and the second anti-rotation block 29 are separated, and the first clamping block 33 is pulled out from between the two adjacent second clamping blocks 34. Then, the limit block 18 is rotated to loosen the cover plate 16. The limit block 18 drives the pressing block 202 to loosen the first airbag 201 through the rotating tube 17 and the sliding sleeve 25, and the gas inside the first sealing ring 12 and the second sealing ring 13 enters the first airbag 201, thereby reducing the pressing force of the first sealing ring 12 on the cover plate 16 and the pressing force of the second sealing ring 13 on the adsorption box 5.

[0069] As the number of the limit blocks 18 for releasing the cover plate 16 increases, the number of the pressing blocks 202 for releasing the first airbag 201 also increases, so that the pressing force of the first sealing ring 12 on the cover plate 16 and the pressing force of the second sealing ring 13 on the adsorption box 5 gradually decrease. That is, the resistance to rotating the limit block 18 to release the cover plate 16 decreases as time goes on, so it is convenient to rotate the limit block 18 to release the cover plate 16.

[0070] After each stop block 18 releases the cover plate 16, the adsorption box 5 is pulled out of the adsorption box 2 through the cover plate 16, so as to facilitate the replacement of the activated carbon layer 6 inside the adsorption box 5. After the activated carbon layer 6 is replaced, the adsorption box 5 is placed into the adsorption box 2 from the access port 15. When the adsorption box 5 is placed in or taken out of the adsorption box 2, since there is less gas inside the second sealing ring 13, the pressing force between the second sealing ring 13 and the adsorption box 5 is small, so that it is convenient to take the adsorption box 5 out of or put it in the adsorption box 2, and at the same time, the friction between the adsorption box 5 and the second sealing ring 13 is reduced, and the damage of the second sealing ring 13 occurs.

[0071] After the adsorption box 5 is placed in the adsorption box 2, the limit block 18 is rotated to press the cover plate 16. The limit block 18 drives the pressing block 202 to squeeze the first airbag 201 through the rotating tube 17 and the sliding sleeve 25, and the gas inside the first airbag 201 enters the first sealing ring 12 and the second sealing ring 13, so that the first sealing ring 12 expands and presses against the cover plate 16, and the second sealing ring 13 expands and presses against the bottom side of the adsorption box 5, thereby achieving a good sealing effect.

[0072] As the number of the limit blocks 18 pressing the cover plate 16 increases, the number of the pressing blocks 202 pressing the first airbag 201 also increases, so that the pressing force of the first sealing ring 12 on the cover plate 16 and the pressing force of the second sealing ring 13 on the adsorption box 5 gradually increase. That is, when the limit blocks 18 are just started to be rotated to press the cover plate 16, the resistance of rotating the limit blocks 18 to press the cover plate 16 is small, so it is convenient to rotate the limit blocks 18 to press the cover plate 16.

[0073] Compared with tightening the cover plate 16 by screwing a nut into a screw, the limit block 18 of the present application rotates fewer times, thereby making it easier to take out the adsorption box 5 and replace the activated carbon. Example 2

[0074] The embodiment of the present application discloses a treatment device for VOC waste gas.

[0075] Reference Fig.10 , Fig.11 The difference between the VOC waste gas treatment device of the embodiment of the present application and the embodiment 1 is that the gas charging and discharging assembly 20 includes a second airbag 203, a driving rod 204 and a pressing plate 205. A placement groove 35 for placing the second airbag 203 is provided on the side of the adsorption box 2 close to the cover plate 16. The driving rod 204 is threaded through the cover plate 16, and the end of the driving rod 204 close to the second airbag 203 is rotatably plugged into the pressing plate 205, and the pressing plate 205 is slidably arranged in the placement groove 35.

[0076] The implementation principle of a VOC waste gas treatment device in an embodiment of the present application is as follows: when each limit block 18 rotates to the side of the cover plate 16 away from the adsorption box 2, the driving rod 204 is rotated, and the driving rod 204 drives the pressure plate 205 to squeeze the second airbag 203, and the pore gas inside the second airbag 203 enters the first sealing ring 12 and the second sealing ring 13, thereby facilitating the inflation of the first sealing ring 12 and the second sealing ring 13.

[0077] When the driving rod 204 drives the pressing plate 205 away from the second airbag 203, the gas inside the first sealing ring 12 and the second sealing ring 13 returns to the second airbag 203, so as to facilitate the deflation of the first sealing ring 12 and the second sealing ring 13. After the first sealing ring 12 and the second sealing ring 13 are deflated, the stopper 18 is rotated away from the cover plate 16, so as to facilitate the removal of the adsorption box 5 from the adsorption box 2 and the replacement of the activated carbon layer 6.

[0078] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A treatment device for VOC waste gas, comprising a spray tower (1) and an adsorption box (2), wherein a gas transmission pipe (3) is connected between the top side of the spray tower (1) and one side of the adsorption box (2), an exhaust pipe (4) is fixedly installed on the side of the adsorption box (2) away from the spray tower (1), an adsorption box (5) is arranged inside the adsorption box (2), the adsorption box (5) is provided with a plurality of first air holes (7) for VOC waste gas to pass through, an activated carbon layer (6) is arranged inside the adsorption box (5), a side of the adsorption box (2) is provided with a take-in and put-out port (15) for the adsorption box (5) to be placed, and a cover plate (16) is fixedly installed on the side of the adsorption box (5) facing the outside of the adsorption box (2), characterized in that: A first sealing ring (12) is fixedly mounted on a side of the adsorption box (2) close to the cover plate (16) along the edge of the access opening (15); a plurality of rotating tubes (17) are arranged around the cover plate (16); the rotating tubes (17) are rotatably plugged into a side of the adsorption box (2) close to the cover plate (16); a limiting block (18) is fixedly mounted on the rotating tube (17); the limiting block (18) is used to abut against a side of the cover plate (16) away from the adsorption box (5); The first sealing ring (12) is a hollow structure, and the first sealing ring (12) is equipped with an inflation and deflation assembly (20), and the inflation and deflation assembly (20) is used to inflate and deflate the first sealing ring (12); The inflation and deflation assembly (20) comprises a plurality of first airbags (201) and a pressing block (202); the first airbags (201) are fixedly mounted on a side of the first sealing ring (12) close to the adsorption box (2); a plurality of grooves (21) are provided on a side of the adsorption box (2) close to the cover plate (16); a blocking block (22) is detachably mounted at the notch of the groove (21); the blocking block (22) is provided with a through hole (23) for the first airbags (201) and the rotating tube (17) to pass through; the rotating tube (17) is sleeved with two limiting rings (24); the two limiting rings (24) are clamped on the blocking block (22); the pressing block (202) is mounted on the body of the rotating tube (17); the pressing block (202) is located inside the groove (21); the rotating tube (17) rotates to drive the pressing block (202) to squeeze the first airbags (201); The pressing block (202) is fixedly mounted with a sliding sleeve (25), the sliding sleeve (25) is slidingly mounted on the rotating tube (17), the inner wall of the sliding sleeve (25) is key-connected to the tube body of the rotating tube (17), a first anti-rotation block (28) is fixedly mounted on one end of the sliding sleeve (25) away from the limiting block (18), a rotating groove (30) for the first anti-rotation block (28) to pass through is formed at the bottom of the groove (21), a second anti-rotation block (29) is fixedly mounted at the bottom of the rotating groove (30), the first anti-rotation block (28) and the second anti-rotation block (29) abut against each other to limit the rotation of the sliding sleeve (25).

2. The VOC waste gas treatment device according to claim 1, characterized in that: There are a plurality of adsorption boxes (5), and the plurality of adsorption boxes (5) are arranged at intervals in the height direction. The first air holes (7) are located at the top and bottom sides of the adsorption box (5). A support plate (9) is provided on the bottom side of each adsorption box (5). The support plate (9) is provided with a plurality of second air holes (8) for VOC waste gas to pass through. The support plate (9) is fixedly mounted on the inner wall of the adsorption box (2). The plurality of support plates (9) divide the interior of the adsorption box (2) into a plurality of waste gas channels (11). One end of the waste gas channel (11) faces the gas supply pipe (3), and the other end of the waste gas channel (11) faces the exhaust pipe (4). Shielding plates (10) are alternately provided at both ends of the plurality of waste gas channels (11) from top to bottom. The shielding plates (10) are fixedly mounted on the support plate (9) and the inner wall of the adsorption box (2). The shielding plates (10) are in contact with the side walls of the adsorption box (5).

3. The VOC waste gas treatment device according to claim 2, characterized in that: A limit plate (14) is fixedly mounted on the inner wall of the adsorption box (2) on a side away from the cover plate (16), the limit plate (14) abuts against the top side of the adsorption box (5), a second sealing ring (13) is embedded on the top surface of the support plate (9), and the first air hole (7) and the second air hole (8) are both located in the area enclosed by the second sealing ring (13).

4. The VOC waste gas treatment device according to claim 1, characterized in that: A key block (26) is fixedly mounted on the inner wall of the sliding sleeve (25); a key opening (27) is provided on the body of the rotating tube (17) for the key block (26) to slide; when the key block (26) slides to the end of the key opening (27) away from the limit block (18), the first anti-rotation block (28) abuts against the second anti-rotation block (29); a pull block (31) is provided at one end of the rotating tube (17) close to the limit block (18); a pull rope (32) is provided inside the rotating tube (17); the pull rope (32) is connected between the pull block (31) and the key block (26).

5. The VOC waste gas treatment device according to claim 4, characterized in that: A plurality of first clamping blocks (33) are fixedly mounted on one side of the first anti-rotation block (28) close to the second anti-rotation block (29), and a plurality of second clamping blocks (34) are fixedly mounted on one side of the second anti-rotation block (29) close to the first anti-rotation block (28). The first clamping blocks (33) and the second clamping blocks (34) are both arranged around the central axis of the rotating tube (17), and the second clamping blocks (34) can enter into a space between two adjacent first clamping blocks (33), and the first clamping blocks (33) can enter into a space between two adjacent second clamping blocks (34).

6. The VOC waste gas treatment device according to claim 5, characterized in that: When the rotating tube (17) drives the pressing block (202) to squeeze the first airbag (201), the side where the first clamping block (33) and the second clamping block (34) are pressed against each other is tilted to move the first clamping block (33) out from between two adjacent second clamping blocks (34).

7. The VOC waste gas treatment device according to claim 1, characterized in that: The inflation and deflation assembly (20) comprises a second airbag (203), a driving rod (204) and a pressure plate (205); a placement groove (35) for placing the second airbag (203) is provided on a side of the adsorption box (2) close to the cover plate (16); the driving rod (204) is threadedly passed through the cover plate (16); one end of the driving rod (204) close to the second airbag (203) is rotatably plugged into the pressure plate (205); and the pressure plate (205) is slidably inserted into the placement groove (35).

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