A rubber production waste gas treatment device and working method thereof

Abstract

The present invention relates to the technical field of waste gas treatment, and in particular to a rubber production waste gas treatment device and a working method thereof, comprising a tower body, wherein an air inlet pipe is installed through the bottom side wall of the tower body, an air distribution plate is installed on the air inlet pipe, an exhaust pipe is installed on the top side of the tower body, a liquid return pipe is connected to the bottom side wall of the tower body, and the liquid return pipe is connected to a liquid tank, and a liquid pump is installed on the liquid tank; the spacing between two packing racks is adjusted by a first motor, that is, when the exhaust gas flow velocity increases, the spacing between the two packing racks increases to reduce the pressure drop, and when the exhaust gas flow velocity decreases, the spacing between the two packing racks automatically decreases to increase the gas-liquid contact area and automatically adjust the spacing according to the air flow velocity, in a low flow velocity scene, a small spacing packing layer is selected to improve the absorption efficiency, and in a high flow velocity scene, a large spacing packing layer is selected to reduce the pressure drop and energy consumption, thereby improving the performance of the spray tower, reducing energy consumption, and extending the life of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a rubber production waste gas treatment device and a working method thereof. Background Art

[0002] A large amount of waste gas is generated during the rubber production process. Treating rubber waste gas can reduce air pollution, reduce greenhouse gas emissions, protect the ecological environment, ensure employee health, improve the working environment, and recycle resources.

[0003] When the exhaust gas is treated through an absorption tower, when the spacing between the packing layers is small, the air flow channel becomes narrower, and the resistance when the exhaust gas passes through increases, resulting in an increase in pressure drop. When the spacing between the packing layers is large, the air flow channel becomes wider, and the resistance when the exhaust gas passes through decreases, and the pressure drop decreases. Under a fixed spacing, the gas-liquid contact efficiency between the exhaust gas and the absorbent is different at different flow rates; in a spray tower, the upper and lower parts of the packing are usually used to different degrees. The upper packing is mainly used for liquid dispersion, and the lower packing may be less efficient due to liquid accumulation. The upper packing is easily contaminated by particulate matter in the exhaust gas, and the lower packing is easily affected by impurities in the liquid. The upper packing may be worn due to airflow impact, and the lower packing may be damaged due to liquid corrosion, resulting in inconsistent usage and wear of the upper and lower packings. Summary of the invention

[0004] The problem solved by the present invention is to provide a rubber production waste gas treatment device and a working method thereof, which solves the problem that when the waste gas is treated through an absorption tower, when the spacing between packing layers is small, the air flow channel becomes narrower, the resistance increases when the waste gas passes through, resulting in an increase in pressure drop, and when the spacing between packing layers is large, the air flow channel becomes wider, the resistance decreases when the waste gas passes through, and the pressure drop decreases. Under a fixed spacing, the gas-liquid contact efficiency between the waste gas and the absorbent at different flow rates is different; in a spray tower, the upper and lower parts of the packing are usually used to different degrees, the upper packing is mainly used for liquid dispersion, and the lower packing may be less efficient due to liquid accumulation, the upper packing is easily contaminated by particulate matter in the waste gas, and the lower packing is easily affected by impurities in the liquid, the upper packing may be worn due to air flow impact, and the lower packing may be damaged due to liquid corrosion, resulting in technical problems such as inconsistent use and wear of the upper and lower packings.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A rubber production waste gas treatment device comprises a tower body, wherein an air inlet pipe is installed through the bottom side wall of the tower body, an air distribution plate is installed on the air inlet pipe, an exhaust pipe is installed on the top side of the tower body, a liquid return pipe is connected to the bottom side wall of the tower body, and the liquid return pipe is connected to a liquid tank, a liquid pump is installed on the liquid tank, a liquid infusion pipe is installed on the liquid pump, a spray plate is installed at the end of the liquid infusion pipe located in the tower body, an annular seat is installed at the center of the tower body, stuffing racks are slidably installed at both ends of the annular seat, and stuffing is filled inside the stuffing rack, an airflow sensor is installed inside the tower body, side seats are symmetrically installed on both sides of the tower body, a lifting seat is slidably installed in the side seat, and both sides of the stuffing rack are connected to the lifting seat through a damping shaft.

[0007] Preferably, conical surfaces are respectively provided at both ends of the annular seat, sliding grooves are symmetrically provided on both sides of the annular seat, the lifting seat is lifted and lowered along the sliding grooves, and a sealing gasket is provided on the contact side between the lifting seat and the sliding grooves.

[0008] Preferably, a first motor is installed on the top of the side seat, and a threaded rod is installed on the output end of the first motor located inside the side seat. The thread directions of the two ends of the threaded rod are opposite, and the threaded rod is respectively threadedly connected to the lifting seats of the two filling racks.

[0009] Preferably, a transmission box is installed on the outer side of one of the side seats, sleeve shafts are installed with bearings at both ends of the transmission box, a synchronous wheel is installed on the outer side of the sleeve shaft, and the two synchronous wheels are connected by a synchronous belt transmission.

[0010] Preferably, a worm is installed in the internal bearing of the lifting seat, a worm wheel is installed at the end of the damping shaft located in the lifting seat, and the worm wheel is meshed with the worm, and a multi-sided plug hole is opened at the end of the worm.

[0011] Preferably, a driven tooth is installed on the outer side of the sleeve shaft, a support frame is installed on one of the side seats, a second motor is installed on the support frame, a driving tooth is installed on the output end of the second motor, and the driving tooth is meshed with the driven tooth.

[0012] Preferably, a polygonal rotating shaft is slidably installed in the sleeve shaft, guide rods are symmetrically installed on the transmission box, and a connecting plate is slidably installed on the guide rods, and rotating drums are rotatably installed on bearings at both ends of the connecting plate, and the rotating drum is elastically connected to the guide rods.

[0013] Preferably, a spring is installed in the rotating drum, and the spring is connected to the end of the polygonal rotating shaft.

[0014] Preferably, a pneumatic cylinder is installed at the center of the connecting plate, and the telescopic end of the pneumatic cylinder passes through the connecting plate and is connected to the transmission box.

[0015] A working method of a rubber production waste gas treatment device, the specific operating steps of the working method are as follows:

[0016] Step 1: The waste gas generated during the rubber production process enters the tower body through the air inlet pipe and the air distribution plate. At this time, the liquid pump works to transport the liquid absorbent in the liquid tank to the spray plate through the liquid delivery pipe. The spray plate evenly sprays it on the packing rack. The waste gas fully contacts the liquid absorbent in the packing to remove the acidic or alkaline gas in the rubber production waste gas;

[0017] Step 2: According to the change of the exhaust gas flow velocity in the tower body, the threaded rod is driven to rotate by the first motor, and then the threaded lifting seat is driven to move in the side seat and the slide slot to adjust the distance between the two packing racks. That is, when the exhaust gas flow velocity increases, the distance between the two packing racks increases to reduce the pressure drop. When the exhaust gas flow velocity decreases, the distance between the two packing racks automatically decreases to increase the gas-liquid contact area.

[0018] Step 3: The two filling racks move to the end of the side seat. At this time, the filling rack is separated from the annular seat. At this time, the polygonal socket of the worm corresponds to the polygonal rotating shaft. The pneumatic cylinder drives the connecting plate to move, and the connecting plate drives the rotating drum and the polygonal rotating shaft to move until the end of the polygonal rotating shaft contacts the end of the worm. At this time, the spring is compressed, and the second motor drives the active gear to rotate, thereby driving the meshing driven gear to rotate. The driven gear drives the sleeve shaft and the synchronous wheel to rotate, and the two sleeve shafts and the two polygonal rotating shafts are rotated by the synchronous belt. When the polygonal rotating shaft matches the polygonal socket, the spring returns to its original state and pushes the polygonal rotating shaft to move and insert into the polygonal socket. The second motor continues to work to realize the rotation of the worm, and drives the damping shaft and the filling rack to rotate through the meshing worm wheel, and rotates the filling rack 180° to realize the flipping of the filling rack. Then the pneumatic cylinder contracts until the polygonal rotating shaft is separated from the polygonal socket, and the filling rack descends into the annular seat to complete the up and down replacement operation of the filling inside the filling rack.

[0019] The beneficial effects of the present invention are as follows: the spacing between the two packing racks is adjusted by the first motor, that is, when the exhaust gas flow velocity increases, the spacing between the two packing racks increases, reducing the pressure drop; when the exhaust gas flow velocity decreases, the spacing between the two packing racks automatically decreases, increasing the gas-liquid contact area; the spacing is automatically adjusted according to the flow velocity; in low flow velocity scenarios, a small spacing packing layer is selected to improve the absorption efficiency; in high flow velocity scenarios, a large spacing packing layer is selected to reduce the pressure drop and energy consumption, thereby improving the performance of the spray tower, reducing energy consumption, and extending the life of the equipment;

[0020] The packing rack is moved out of the annular seat by the first motor, and the polygonal socket of the worm is matched with the polygonal shaft, the polygonal shaft is moved by the operation of the pneumatic cylinder, the polygonal shaft is contacted with the worm by the spring, and the polygonal shaft is rotated by the operation of the second motor. After the polygonal shaft is matched with the polygonal socket, the polygonal shaft and the worm are connected under the action of the spring, and the worm is continued to be driven to rotate. The damping shaft and the packing rack are driven to rotate by the meshing worm gear, and the packing rack is rotated 180 degrees to realize the turning over of the packing rack, and the up and down replacement operation of the packing inside the packing rack is completed, thereby extending the service life of the packing, improving the uniformity of the packing use, and reducing local blockage or pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the first installation structure of the packing rack of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the annular seat of the present invention;

[0025] Figure 5 This is a schematic diagram of a second installation structure of a packing rack according to the present invention;

[0026] Figure 6 For the present invention Figure 5 A partial enlarged view of the middle A area;

[0027] Figure 7 It is a cross-sectional view of the side seat and the transmission box of the present invention.

[0028] Legend:

[0029] 1. Tower body; 2. Air inlet pipe; 3. Air distribution plate; 4. Liquid return pipe; 5. Liquid tank; 6. Liquid pump; 7. Liquid infusion pipe; 8. Spray plate; 9. Ring seat; 10. Slide; 11. Filling rack; 12. Side seat; 13. First motor; 14. Threaded rod; 15. Lifting seat; 16. Damping shaft; 17. Transmission box; 18. Sleeve shaft; 19. Synchronous wheel; 20. Multilateral shaft; 21. Worm; 22. Multilateral socket; 23. Worm wheel; 24. Driven gear; 25. Support frame; 26. Second motor; 27. Driving gear; 28. Rotating drum; 29. ​​Spring; 30. Connecting plate; 31. Pneumatic cylinder; 32. Guide rod. DETAILED DESCRIPTION

[0030] 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.

[0031] Specific examples are given below.

[0032] See also Figure 1 to Figure 7 A rubber production waste gas treatment device comprises a tower body 1, an air inlet pipe 2 is installed through the bottom side wall of the tower body 1, an air distribution plate 3 is installed on the air inlet pipe 2, an exhaust pipe is installed on the top side of the tower body 1, a liquid return pipe 4 is connected to the bottom side wall of the tower body 1, and the liquid return pipe 4 is connected to a liquid tank 5, a liquid pump 6 is installed on the liquid tank 5, a liquid delivery pipe 7 is installed on the liquid pump 6, and a spray plate 8 is installed at the end of the liquid delivery pipe 7 in the tower body 1. The waste gas generated in the rubber production process enters the tower body 1 through the air inlet pipe 2 and the air distribution plate 3. At this time, the liquid pump 6 works to transport the liquid absorbent in the liquid tank 5 to the spray plate 8 through the liquid delivery pipe 7, and the liquid is evenly sprayed on the filler frame 11 through the spray plate 8. The waste gas is fully in contact with the liquid absorbent in the filler to remove the acidic or alkaline gas in the rubber production waste gas;

[0033] An annular seat 9 is installed at the center of the tower body 1, and packing racks 11 are slidably installed at both ends of the annular seat 9, and packing is filled inside the packing racks 11. An airflow sensor is installed inside the tower body 1, and side seats 12 are symmetrically installed on both sides of the tower body 1. A lifting seat 15 is slidably installed in the side seat 12, and the two sides of the filling rack 11 are connected to the lifting seat 15 through a damping shaft 16. Conical surfaces are respectively provided at both ends of the annular seat 9, and slide grooves 10 are symmetrically provided on both sides of the annular seat 9. The lifting seat 15 rises and falls along the slide groove 10, and a sealing gasket is provided on the contact side between the lifting seat 15 and the slide groove 10. A first motor 13 is installed on the top of the side seat 12, and a threaded rod 14 is installed in the output end of the first motor 13 in the side seat 12, and the thread directions of the two ends of the threaded rod 14 are opposite, and the threaded rod 14 is respectively connected to the side of the side seat 12. The lifting seats 15 of the two filling frames 11 are threadedly connected, a transmission box 17 is installed on the outside of one of the side seats 12, and sleeve shafts 18 are installed on bearings at both ends of the transmission box 17. A synchronous wheel 19 is installed on the outside of the sleeve shaft 18, and the two synchronous wheels 19 are connected through synchronous belt transmission. A worm 21 is installed on the internal bearing of the lifting seat 15, and a worm wheel 23 is installed at the end of the damping shaft 16 located in the lifting seat 15, and the worm wheel 23 is meshed with the worm 21. A multi-sided jack 22 is provided at the end of the worm 21, and a driven tooth 24 is installed on the outside of the sleeve shaft 18. A support frame 25 is installed on one of the side seats 12, and a second motor 26 is installed on the support frame 25. A driving tooth 27 is installed at the output end of the second motor 26, and the driving tooth 27 is meshed with the driven tooth 24. A polygonal shaft 20 is slidably installed, a guide rod 32 is symmetrically installed on the transmission box 17, and a connecting plate 30 is slidably installed on the guide rod 32. A rotating cylinder 28 is rotatably installed on both ends of the connecting plate 30, and the rotating cylinder 28 is elastically connected to the guide rod 32. A spring 29 is installed in the rotating cylinder 28, and the spring 29 is connected to the end of the polygonal shaft 20. A pneumatic cylinder 31 is installed at the center of the connecting plate 30, and the telescopic end of the pneumatic cylinder 31 penetrates the connecting plate 30 and is connected to the transmission box 17. According to the change of the exhaust gas flow speed in the tower body 1, the threaded rod 14 is driven to rotate through the first motor 13, and then the threaded lifting seat 15 is driven to move in the side seat 12 and the slide groove 10 to adjust the distance between the two filling frames 11, that is, when the exhaust gas flow speed increases, the distance between the two filling frames 11 Increase, reduce pressure drop, when the exhaust gas flow speed decreases, the distance between the two filling frames 11 automatically decreases, increase the gas-liquid contact area, the two filling frames 11 move to the end of the side seat 12, at this time the filling frame 11 is separated from the annular seat 9, at this time the polygonal jack 22 of the worm 21 corresponds to the polygonal shaft 20, the pneumatic cylinder 31 works to drive the connecting plate 30 to move, the connecting plate 30 drives the rotating drum 28 and the polygonal shaft 20 to move, until the end of the polygonal shaft 20 contacts the end of the worm 21, and at this time the spring 29 is compressed, the second motor 26 works to drive the active tooth 27 to rotate, and then drives the meshing driven tooth 24 to rotate, the driven tooth 24 drives the sleeve shaft 18 and the synchronous wheel 19 to rotate, and the two sleeve shafts 18 and the two polygonal shafts 20 rotate through the synchronous belt,When the polygonal shaft 20 matches the polygonal socket 22, the spring 29 returns to its original state, pushing the polygonal shaft 20 to move and insert into the polygonal socket 22. The second motor 26 continues to work to rotate the worm 21, and the meshing worm gear 23 drives the damping shaft 16 and the packing rack 11 to rotate, rotating the packing rack 11 by 180° to turn over the packing rack 11. Then, the pneumatic cylinder 31 contracts until the polygonal shaft 20 is separated from the polygonal socket 22, and the packing rack 11 descends into the annular seat 9, completing the up and down displacement operation of the packing inside the packing rack 11.

[0034] The spacing between the two packing racks 11 is adjusted by the first motor 13, that is, when the exhaust gas flow velocity increases, the spacing between the two packing racks 11 increases to reduce the pressure drop. When the exhaust gas flow velocity decreases, the spacing between the two packing racks 11 automatically decreases to increase the gas-liquid contact area. The spacing is automatically adjusted according to the flow velocity. In low flow velocity scenarios, a small spacing packing layer is selected to improve the absorption efficiency. In high flow velocity scenarios, a large spacing packing layer is selected to reduce the pressure drop and energy consumption, thereby improving the performance of the spray tower, reducing energy consumption, and extending the life of the equipment.

[0035] The filling rack 11 is moved out of the annular seat 9 by the first motor 13, and the polygonal socket 22 of the worm 21 is matched with the polygonal shaft 20, the polygonal shaft 20 is moved by the operation of the pneumatic cylinder 31, the contact between the polygonal shaft 20 and the worm 21 is achieved by the spring 29, and the rotation of the polygonal shaft 20 is achieved by the operation of the second motor 26. After the polygonal shaft 20 is matched with the polygonal socket 22, the polygonal shaft 20 and the worm 21 are connected under the action of the spring 29, and the worm 21 can continue to be driven to rotate, and the damping shaft 16 and the filling rack 11 are driven to rotate by the meshing worm gear 23, and the filling rack 11 is rotated 180° to realize the turning over of the filling rack 11, and complete the up and down transposition operation of the filling inside the filling rack 11, thereby extending the service life of the filling, improving the uniformity of the filling use, and reducing local blockage or pollution.

[0036] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rubber production waste gas treatment device, characterized in that: The tower body (1) comprises an air inlet pipe (2) penetrating through the bottom side wall of the tower body (1), an air distribution plate (3) being installed on the air inlet pipe (2), an exhaust pipe being installed on the top side of the tower body (1), a liquid return pipe (4) being connected to the bottom side wall of the tower body (1), and the liquid return pipe (4) being connected to a liquid tank (5), a liquid pump (6) being installed on the liquid tank (5), a liquid delivery pipe (7) being installed on the liquid pump (6), and a spray nozzle being installed at the end of the liquid delivery pipe (7) being located inside the tower body (1). A shower tray (8), an annular seat (9) is installed at the center of the tower body (1), a stuffing rack (11) is slidably installed at both ends of the annular seat (9), and the stuffing rack (11) is filled with stuffing, an airflow sensor is installed inside the tower body (1), side seats (12) are symmetrically installed on both sides of the tower body (1), a lifting seat (15) is slidably installed in the side seat (12), and both sides of the stuffing rack (11) are connected to the lifting seat (15) through a damping shaft (16); Conical surfaces are respectively provided at both ends of the annular seat (9), and slide grooves (10) are symmetrically provided on both sides of the annular seat (9). The lifting seat (15) is lifted and lowered along the slide grooves (10), and a sealing gasket is provided on the contact side between the lifting seat (15) and the slide grooves (10). A first motor (13) is installed on the top of the side seat (12), and a threaded rod (14) is installed in the output end of the first motor (13) located in the side seat (12), and the thread directions of the two ends of the threaded rod (14) are opposite, and the threaded rod (14) is respectively threadedly connected to the lifting seats (15) of the two filling frames (11); A worm (21) is installed in the internal bearing of the lifting seat (15), a worm wheel (23) is installed at the end of the damping shaft (16) located in the lifting seat (15), and the worm wheel (23) is meshed with the worm (21), and a multi-sided plug hole (22) is provided at the end of the worm (21).

2. A rubber production waste gas treatment device according to claim 1, characterized in that: A transmission box (17) is installed on the outside of one of the side seats (12), sleeve shafts (18) are installed on bearings at both ends of the transmission box (17), a synchronous wheel (19) is installed on the outside of the sleeve shaft (18), and the two synchronous wheels (19) are connected by a synchronous belt transmission.

3. A rubber production waste gas treatment device according to claim 2, characterized in that: A driven tooth (24) is installed on the outer side of the sleeve shaft (18), a support frame (25) is installed on one of the side seats (12), a second motor (26) is installed on the support frame (25), a driving tooth (27) is installed on the output end of the second motor (26), and the driving tooth (27) is meshed with the driven tooth (24).

4. A rubber production waste gas treatment device according to claim 3, characterized in that: A polygonal rotating shaft (20) is slidably mounted in the sleeve shaft (18), a guide rod (32) is symmetrically mounted on the transmission box (17), and a connecting plate (30) is slidably mounted on the guide rod (32), a rotating drum (28) is rotatably mounted on bearings at both ends of the connecting plate (30), and the rotating drum (28) is elastically connected to the guide rod (32).

5. A rubber production waste gas treatment device according to claim 4, characterized in that: A spring (29) is installed in the rotating drum (28), and the spring (29) is connected to the end of the polygonal rotating shaft (20).

6. A rubber production waste gas treatment device according to claim 5, characterized in that: A pneumatic cylinder (31) is installed at the center of the connecting plate (30), and the telescopic end of the pneumatic cylinder (31) penetrates the connecting plate (30) and is connected to the transmission box (17).

7. The working method of a rubber production waste gas treatment device according to claim 6, characterized in that: The specific steps of this working method are as follows: Step 1: the waste gas generated in the rubber production process enters the tower body (1) through the air inlet pipe (2) and the air distribution plate (3), and at this time the liquid pump (6) works to transport the liquid absorbent in the liquid tank (5) to the spray plate (8) through the liquid delivery pipe (7), and the liquid absorbent is evenly sprayed on the packing frame (11) through the spray plate (8). The waste gas is fully in contact with the liquid absorbent in the packing, and the acidic or alkaline gas in the waste gas produced by the rubber production is removed; Step 2: according to the change of the exhaust gas flow velocity in the tower body (1), the first motor (13) is operated to drive the threaded rod (14) to rotate, thereby driving the threaded lifting seat (15) to move in the side seat (12) and the slide groove (10), and adjusting the distance between the two filling frames (11), that is, when the exhaust gas flow velocity increases, the distance between the two filling frames (11) increases to reduce the pressure drop, and when the exhaust gas flow velocity decreases, the distance between the two filling frames (11) automatically decreases to increase the gas-liquid contact area; Step 3: The two filling racks (11) move to the end of the side seat (12), at which time the filling rack (11) is separated from the annular seat (9), and the polygonal socket (22) of the worm (21) corresponds to the polygonal shaft (20), and the pneumatic cylinder (31) drives the connecting plate (30) to move, and the connecting plate (30) drives the rotating drum (28) and the polygonal shaft (20) to move until the end of the polygonal shaft (20) contacts the end of the worm (21), and at this time the spring (29) is compressed, and the second motor (26) drives the driving tooth (27) to rotate, and then drives the meshing driven tooth (24) to rotate, and the driven tooth (24) drives the sleeve shaft (18) and the synchronous wheel (19) to rotate, and the two are realized through the synchronous belt. The sleeve shaft (18) and the two polygonal shafts (20) rotate. When the polygonal shaft (20) matches the polygonal insertion hole (22), the spring (29) returns to its original state, pushing the polygonal shaft (20) to move and insert into the polygonal insertion hole (22). The second motor (26) continues to work to realize the rotation of the worm (21). The meshing worm gear (23) drives the damping shaft (16) and the packing rack (11) to rotate, and the packing rack (11) is rotated 180 degrees to realize the turning over of the packing rack (11). Then the pneumatic cylinder (31) contracts until the polygonal shaft (20) is separated from the polygonal insertion hole (22), and the packing rack (11) descends into the annular seat (9), completing the up and down displacement operation of the packing inside the packing rack (11).

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