VOCs treatment equipment and method for pharmaceutical and chemical production

Abstract

The invention relates to the technical field of VOCs treatment, in particular to VOCs treatment equipment and method for pharmaceutical and chemical production. According to the technical scheme, the spiral alternate material changing device is arranged between a tower body and a center cylinder and comprises a spiral installation structure fixed to the tower body and the center cylinder and a spiral material containing structure capable of moving in the spiral installation structure. According to the device, the utilization rate of the filler can be greatly improved in a mode of replacing the filler positions with different distribution heights, the device is simple in structure and convenient to operate, the filler replacement operation can be quickly completed, and new filler does not need to be refilled on a small scale, so that the time for culturing the biological membrane is saved, and the operation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of VOCs treatment, and in particular to a VOCs treatment device and method for pharmaceutical and chemical production. Background Art

[0002] A variety of VOCs are produced during the pharmaceutical and chemical production process. These compounds not only pollute the environment, but may also be harmful to human health. There are many existing ways to deal with VOCs. The most common ones are: There are many end-of-pipe treatment technologies for VOCs pollution from industrial sources, which are mainly divided into two categories: recovery technology and destruction technology. Recovery technologies include adsorption technology, absorption technology, condensation technology, membrane separation technology, etc.; destruction technologies mainly include thermal combustion technology, catalytic combustion technology, photocatalytic degradation technology, low-temperature plasma technology, and biodegradation technology.

[0003] In biodegradation technology, biological scrubbers are often used, which are composed of packing layers and spray systems. During use, the waste gas enters through the bottom of the tower, passes through each packing layer for treatment, and finally is discharged from the top of the tower. This operation mode will result in that in long-term use, because the gas enters from the bottom of the tower, the gas first contacts the packing at the bottom of the tower, then the packing in the middle of the tower, and finally the packing at the top of the tower. Therefore, the packing at the bottom will have a thicker biofilm and a higher gas-liquid mass transfer rate than the packing in the middle and top. After long-term use, the packing at the bottom will first have blockage and scaling problems compared to the packing in the middle and top. At this time, the packing needs to be replaced.

[0004] The existing replacement method is to open the tower body, remove all the fillers at once, and then fill the tower with new fillers. However, this often results in the replacement of the middle and top fillers that can still be used, thus wasting resources, and the new fillers need a period of time to grow biofilm before they can be used, thus wasting time. Summary of the invention

[0005] The purpose of the present invention is to address the problems existing in the background technology and to propose a VOCs treatment device and method for pharmaceutical and chemical production.

[0006] The technical solution of the present invention is: a VOCs treatment device for pharmaceutical and chemical production, comprising a tower body and a central tube installed therein, the top of the tower body is an air outlet, the bottom is an air inlet, a spiral alternating material replacement device is arranged between the tower body and the central tube, the spiral alternating material replacement device comprises a spiral mounting structure fixed on the tower body and the central tube, and also comprises a spiral material containing structure movable in the spiral mounting structure;

[0007] The spiral mounting structure comprises two spiral mounting arms respectively fixed on the tower body and the central tube, a spiral mounting groove is provided in the spiral mounting arms, the spiral material holding structure comprises two spiral rubber arms respectively inserted in the spiral mounting grooves on both sides, and also comprises a spiral air-permeable pad fixed between the two spiral rubber arms, a filler is laid on the spiral air-permeable pad, the filler is a light-weight filler, an inlet of the spiral material holding structure is provided at the top of the spiral mounting structure passing through the tower body, and an outlet of the spiral material holding structure is provided at the bottom of the spiral mounting structure passing through the tower body, after long-term use, the filler on the spiral air-permeable pad is located at the top, middle and bottom of the tower body to form a new material area, a second-new material area and an old material area respectively;

[0008] A spiral movable groove is also provided in the spiral mounting arm, a rope cavity is provided in the spiral rubber arm, a traction rope is fixedly installed in the rope cavity, the length of the traction rope exposed outside the rope cavity is greater than the length of the spiral mounting groove, a movable block is movable in the spiral movable groove, and a fixing hole is provided in the fixing hole for connecting the traction rope.

[0009] Preferably, a material shaking device is provided between the spiral mounting structure and the spiral material holding structure, the material shaking device comprises a spiral plate fixed between two spiral mounting arms, a plurality of first protrusions are evenly distributed on the spiral plate in the old material area, the material shaking device also comprises a spiral rubber plate fixed between two spiral rubber arms, a plurality of second protrusions which are evenly distributed on the spiral rubber plate and are compatible with the first protrusions.

[0010] Preferably, a reel box is fixedly installed at the bottom of the tower body, a reel rack of a reeling spiral material holding structure is installed in the reel box, a feeding device is also installed in the reel box, and a storage box is fixedly installed at the bottom of the tower body, a reel shaft for reeling spiral material holding structure is rotatably installed in the storage box.

[0011] Preferably, the winding rack includes a chassis rotatably mounted on the bottom of the unwinding box, and a support column fixed on the chassis, the bottom of the storage box is fixed and connected to a discharge port, a motor for driving the winding shaft is fixed in the storage box, and the spiral rubber arm is provided with a plurality of grooves on one side close to the spiral movable groove.

[0012] Preferably, the feeding device includes an entrance and exit opened between the unwinding box and the tower body, and a discharge hopper fixed on the entrance and exit, the discharge hopper is provided with a feeding channel with a discharge port located in the entrance and exit, a first guide roller is rotatably installed in the entrance and exit, a mounting frame is fixedly installed on the unwinding box, and a second guide roller is rotatably installed on the mounting frame, and the spiral material holding structure enters into the spiral mounting structure from between the first guide roller and the second guide roller.

[0013] Preferably, a spiral water pipe is fixedly installed in the central tube, and a plurality of water outlets are provided on the spiral water pipe above the spiral air-permeable pad. A water pipe having one end connected to the spiral water pipe is also fixed in the central tube. A water tank is fixedly installed at the bottom of the tower body, and a water pump is provided in the water tank. The other end of the water pipe is fixed to and connected with the water outlet end of the water pump.

[0014] A method for treating VOCs in pharmaceutical and chemical production, comprising the following steps:

[0015] S1: Fix the traction ropes on both sides of the spiral rubber arm in the two fixing holes respectively, and then put the two moving blocks through the entrance and exit respectively into the spiral moving groove at the entrance of the spiral material holding structure. The two moving blocks will slide down from the spiral moving grooves on both sides. The moving blocks drive the traction ropes to move from the top of the spiral installation groove to the bottom of the spiral installation groove, and then discharge from the spiral installation groove to the exit of the spiral material holding structure;

[0016] S2: Pull the two moving blocks at the outlet of the spiral material holding structure, manually remove the spiral material holding structure from the winding frame, pass the spiral material holding structure through the inlet and outlet, insert the spiral rubber arm into the spiral installation slot and move inside it, then pull the traction rope at one end and rotate the winding frame at one end to put the spiral material holding structure into the tower body, and the spiral material holding structure will enter the tower body from between the first guide roller and the second guide roller;

[0017] S3: Fillers are input into the discharge hopper, and the fillers are output from the feeding channel to the moving spiral air-permeable pad. As the material is continuously fed into the discharge hopper, the spiral air-permeable pad entering the tower body through the inlet and outlet is evenly covered with fillers;

[0018] S4: As the traction rope is continuously pulled and the winding frame is continuously rotated, the spiral material holding structure is put into the tower body, and the spiral material holding structure will be completely installed between the two spiral installation arms. Then, the pulling of the cutting groove and the rotation of the winding frame are stopped, and the traction rope is removed from the fixing hole. The two ends of the traction rope are respectively fixed to the two ends of the winding shaft, that is, the spiral material holding structure is installed.

[0019] S5: Start the water pump in the water tank to deliver water to the water delivery pipe, so that the water is discharged from the water outlet through the spiral water pipe to the fillers of each layer, and the waste gas is input into the air inlet through the air inlet pipe. The waste gas passes through the spiral air pads of each layer, and the microorganisms on the fillers capture and degrade VOCs. Finally, the treated waste gas is discharged through the air outlet pipe, and the waste gas treatment is completed;

[0020] S6: After the equipment has been used for a long time, the spiral air pads at the top, middle and bottom of the tower body form new material areas, second-new material areas and old material areas respectively, and the fillers need to be replaced;

[0021] S7: Start the motor in the storage box to drive the reel to rotate, so that the traction ropes fixed at both ends of the reel are reeled in, which will pull the spiral rubber arm out of the spiral installation groove, so that the spiral air pad is pulled out, so that the spiral rubber arm and the spiral air pad are reeled onto the reel, and the filler on the spiral air pad falls into the discharge port during the reeling process and is discharged;

[0022] S8: With the continuous rotation of the reel, the fillers in the old material area are discharged, and the fillers in the secondary material area have a suitable biofilm thickness due to long-term use. With the continuous movement of the spiral material holding structure, the fillers in the secondary material area enter the bottom of the tower body to form usable fillers, and the fillers in the new material area will enter the middle part of the tower body to form a new secondary material area. The spiral air permeable pad that enters later is fed through the feeding device to form a new new material area, and the filler replacement is completed.

[0023] Compared with the existing technology, the beneficial effects of the present invention are as follows: this scheme fills the filler on the spiral material holding structure through the setting of the spiral alternating material replacement device, and the spiral material holding structure is movably installed in the spiral mounting structure. After long-term use, the top, middle and bottom of the tower body are respectively divided into a new material area, a second-new material area and an old material area. By moving the spiral material holding structure in the spiral mounting structure, the filler in the old material area will be discharged. At this time, the filler in the second-new material area has a suitable biofilm thickness due to long-term use, and new usable filler is formed by moving. Therefore, by replacing the filler position at different distribution heights, the utilization rate of the filler can be greatly improved. In addition, the structure is simple and the operation is convenient. The filler replacement operation can be completed quickly, and there is no need to refill new filler on a large scale. Therefore, the time for maintaining the vehicle biofilm is saved and the operation efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the tower body of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the spiral alternating material replacing device of the present invention;

[0027] Figure 4 for Figure 3 Schematic diagram of the main structure;

[0028] Figure 5 It is a structural schematic diagram of the material shaking device of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the spiral installation structure of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the spiral material holding structure of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the spiral material holding structure of the present invention being installed in the spiral installation structure;

[0032] Fig. 9 It is a schematic diagram of the internal structure of the unwinding box of the present invention.

[0033] Figure numerals: 1, tower body; 2, water tank; 3, air inlet pipe; 4, air outlet pipe; 5, central tube; 6, spiral installation structure; 7, spiral material holding structure; 8, material shaking device; 9, unwinding box; 31, air inlet; 41, air outlet; 51, water pipe; 52, spiral water pipe; 53, water outlet head; 61, spiral installation arm; 62, spiral installation slot; 63, spiral moving slot; 64, moving block; 65, fixing hole; 71, spiral rubber arm; 72, spiral air-permeable pad; 73, cutting groove; 74, traction rope; 75, rope cavity; 81, spiral plate; 82, first protrusion; 83, spiral rubber plate; 84, second protrusion; 91, chassis; 92, support column; 93, entrance and exit; 94, discharge hopper; 95, feeding channel; 96, first guide roller; 97, second guide roller; 98, mounting frame; 100, storage box; 200, take-up reel; 300, discharge port. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Refer to the attached Figure 1-Figure 9 , a VOCs treatment device for pharmaceutical and chemical production, comprising a tower body 1 and a central tube 5 installed therein, the top of the tower body 1 is an air outlet 41, the bottom is an air inlet 31, a spiral alternating material replacement device is provided between the tower body 1 and the central tube 5, the spiral alternating material replacement device comprises a spiral mounting structure 6 fixed on the tower body 1 and the central tube 5, and also comprises a spiral material holding structure 7 movable in the spiral mounting structure 6;

[0036] The spiral mounting structure 6 includes two spiral mounting arms 61 respectively fixed on the tower body 1 and the central tube 5, and a spiral mounting groove 62 is provided in the spiral mounting arm 61. The spiral material holding structure 7 includes two spiral rubber arms 71 respectively inserted into the spiral mounting grooves 62 on both sides, and also includes a spiral air-permeable pad 72 fixed between the two spiral rubber arms 71. Fillers are laid on the spiral air-permeable pad 72, and the fillers are light-weight fillers. The spiral mounting structure 6 passes through the top of the tower body 1 and is provided with an inlet of the spiral material holding structure 7. The spiral mounting structure 6 passes through the bottom of the tower body 1 and is provided with an outlet of the spiral material holding structure 7. After long-term use, the fillers on the spiral air-permeable pad 72 are located at the top, middle and bottom of the tower body 1 to form a new material area, a second-new material area and an old material area, respectively.

[0037] During the long-term use of the tower body 1, since the tower body 1 takes in air from the bottom, the gas first contacts the bottom filler of the tower body 1, then the middle filler, and finally the top filler. Therefore, compared with the fillers in the middle and top, the filler at the bottom will have a thicker biofilm and a higher gas-liquid mass transfer rate. After long-term use, the filler at the bottom will become thicker due to the above advantages, and the biofilm will be overgrown due to the rich water and nutrients. Therefore, compared with the fillers in the middle and top, the filler at the bottom will first have blockage and scaling problems. Therefore, the distinction between the biofilm thickness and the blockage and agglomeration problems is based on the origin of the division of the new material area, the second-new material area and the old material area in this scheme.

[0038] In this solution, the spiral air-permeable pad 72 is made of non-woven fabric material, and the spiral air-permeable pad 72 is formed by folding and sewing multiple layers of non-woven fabric.

[0039] A spiral movable groove 63 is also provided in the spiral mounting arm 61, a rope cavity 75 is provided in the spiral rubber arm 71, a traction rope 74 is fixedly installed in the rope cavity 75, the length of the traction rope 74 exposed outside the rope cavity 75 is greater than the length of the spiral mounting groove 62, a movable block 64 is movable in the spiral movable groove 63, and a fixing hole 65 is provided for connecting the traction rope 74.

[0040] Fix the traction rope 74 in the fixing hole 65, and then put the moving block 64 into the spiral moving groove 63 and let it slide down, so that the traction rope 74 moves from the top of the spiral installation groove 62 to the bottom thereof, and then the spiral rubber arm 71 can be installed by pulling the traction rope 74. It should be noted that the groove walls of the moving groove 63 and the spiral installation groove 62 are smooth enough, and lubricating oil can be used to improve lubricity during use;

[0041] After long-term use, the filler in the old material area needs to be replaced, and at this time the filler in the secondary material area has a suitable biofilm thickness due to long-term use, so the traction rope 74 is pulled again to pull the spiral rubber arm 71 out of the spiral mounting groove 62, so that the spiral air permeable pad 72 in the old material area is discharged from the tower body 1, and the bottom of the mobile tower body 1 in the secondary material area becomes a usable old material area.

[0042] Therefore, by replacing the positions of fillers with different distribution heights, the utilization rate of the fillers can be greatly improved, and the structure is simple, the operation is convenient, and the replacement operation of the fillers can be completed quickly.

[0043] In this embodiment, a material shaking device 8 is provided between the spiral mounting structure 6 and the spiral material holding structure 7. The material shaking device 8 includes a spiral plate 81 fixed between two spiral mounting arms 61, and a plurality of first protrusions 82 are evenly distributed on the spiral plate 81 in the old material area. The material shaking device 8 also includes a spiral rubber plate 83 fixed between two spiral rubber arms 71, and a plurality of second protrusions 84 that are adapted to the first protrusions 82 are evenly distributed on the spiral rubber plate 83.

[0044] The middle part of the spiral air-permeable pad 72 can be supported by the spiral rubber plate 83 after filling, and when the new material area moves to the old material area at the bottom of the tower body 1, the second protrusion 84 will continuously collide with the first protrusion 82, causing the spiral air-permeable pad 72 to shake, so that the filler in the new material area can be shaken, and the slightly agglomerated filler can be loosened again, so that it can be better used.

[0045] In this embodiment, the filler may be organic filler such as sawdust and rice husk, or plastic filler or fiber filler, but it must be in granular form.

[0046] In addition, if Figure 1 As shown, a reel box 9 is fixedly installed at the bottom of the tower body 1, and a reeling frame for reeling in a spiral material holding structure 7 is installed in the reeling box 9, and a feeding device is also installed in the reeling box 9. A storage box 100 is fixedly installed at the bottom of the tower body 1, and a reeling shaft 200 for reeling in the spiral material holding structure 7 is rotatably installed in the storage box 100. The reeling frame includes a chassis 91 rotatably installed at the bottom of the reel box 9, and a support column 92 fixed on the chassis 91. A discharge port 300 is fixed at the bottom of the storage box 100 and is connected to the storage box 100. A motor for driving the reeling shaft 200 is fixed in the storage box 100, and a plurality of cutting grooves 73 are opened on the spiral rubber arm 71 near the spiral movable groove 63.

[0047] After the traction rope 74 passes through the spiral mounting groove 62, the traction rope 74 is manually pulled and the winding frame is manually rotated, so that the winding on the spiral material holding structure 7 is unwound and enters the spiral mounting structure 6 for installation. After the spiral material holding structure 7 is installed, the traction rope 74 is removed from the fixing hole 65 and fixed on the winding shaft 200. When the old material area is replaced, the winding shaft 200 is driven by a motor, which enables the traction rope 74 to pull the spiral rubber arm 71 to move. As the spiral material holding structure 7 is continuously wound up, the filler on the spiral air permeable pad 72 will fall into the discharge port 300 for discharge, and by opening the cutting groove 73, the spiral rubber arm 71 can be deformed smoothly, which is convenient for winding and entering the spiral mounting structure 6.

[0048] It should also be noted that the feeding device includes an entrance and exit 93 opened between the unwinding box 9 and the tower body 1, and a discharge hopper 94 fixed on the entrance and exit 93, the discharge hopper 94 is provided with a feeding channel 95 with a discharge port located in the entrance and exit 93, a first guide roller 96 is rotatably installed in the entrance and exit 93, a mounting frame 98 is fixedly installed on the unwinding box 9, and a second guide roller 97 is rotatably installed on the mounting frame 98, and the spiral material holding structure 7 enters into the spiral mounting structure 6 from between the first guide roller 96 and the second guide roller 97.

[0049] When the spiral material holding structure 7 wound on the winding frame enters into the spiral mounting structure 6 , the filler will automatically fall onto the spiral air-permeable pad 72 and enter into the spiral mounting structure 6 by feeding the material into the discharge hopper 94 .

[0050] In addition, a spiral water pipe 52 is fixedly installed in the central tube 5, and a plurality of water outlets 53 are provided on the spiral water pipe 52, which are located above the spiral air-permeable pad 72. A water pipe 51, one end of which is connected to the spiral water pipe 52, is also fixed in the central tube 5. A water tank 2 is fixedly installed at the bottom of the tower body 1, and a water pump is provided in the water tank 2. The other end of the water pipe 51 is fixed and connected to the water outlet end of the water pump. When the water pump is started to supply water to the water pipe 51, water will be discharged from the water outlet 53 to supply water to the filler.

[0051] The present invention also discloses a method for treating VOCs in pharmaceutical and chemical production, comprising the following steps:

[0052] S1: Fix the traction ropes 74 on both sides of the spiral rubber arm 71 in the two fixing holes 65 respectively, and then put the two moving blocks 64 through the entrance and exit 93 and into the spiral moving groove 63 at the entrance of the spiral material holding structure 7 respectively. The two moving blocks 64 will slide down from the spiral moving groove 63 on both sides, and the moving blocks 64 drive the traction rope 74 to move from the top of the spiral installation groove 62 to the bottom thereof, and then be discharged from the spiral installation groove 62 to the exit of the spiral material holding structure 7;

[0053] S2: Pull the two moving blocks 64 located at the exit of the spiral material holding structure 7, and manually remove the spiral material holding structure 7 from the winding frame, and pass the spiral material holding structure 7 through the entrance and exit 93, so that the spiral rubber arm 71 is inserted into the spiral installation groove 62 and moves therein, and then pull the traction rope 74 at one end and rotate the winding frame at one end to put the spiral material holding structure 7 into the tower body 1, and the spiral material holding structure 7 will enter the tower body 1 from between the first guide roller 96 and the second guide roller 97;

[0054] S3: Fillers are input into the discharge hopper 94, and the fillers are output from the feeding channel 95 to the moving spiral air-permeable pad 72. As the materials are continuously fed into the discharge hopper 94, the spiral air-permeable pad 72 entering the tower body 1 through the inlet and outlet 93 is evenly covered with fillers;

[0055] S4: As the traction rope 74 is continuously pulled and the winding frame is continuously rotated to put the spiral material holding structure 7 into the tower body 1, the spiral material holding structure 7 will be completely installed between the two spiral installation arms 61, and then the pulling of the cutting groove 73 and the rotation of the winding frame are stopped, and the traction rope 74 is removed from the fixing hole 65, and the two ends of the traction rope 74 are respectively fixed to the two ends of the winding shaft 200, that is, the spiral material holding structure 7 is installed;

[0056] S5: Start the water pump in the water tank 2 to deliver water to the water delivery pipe 51, so that the water is discharged from the water outlet 53 to the fillers of each layer through the spiral water pipe 52, and the waste gas is input into the air inlet 31 through the air inlet pipe 3. The waste gas passes through the spiral air-permeable pads 72 of each layer, and the microorganisms on the fillers capture and degrade VOCs. Finally, the treated waste gas is discharged through the air outlet pipe 4, and the waste gas treatment is completed;

[0057] S6: After the equipment has been used for a long time, the spiral air-permeable pad 72 is located at the top, middle and bottom of the tower body 1 to form a new material area, a second-new material area and an old material area, respectively, and the filler needs to be replaced;

[0058] S7: Start the motor in the storage box 100 to drive the reel 200 to rotate, so that the traction rope 74 fixed at both ends of the reel 200 is reeled up to pull the spiral rubber arm 71 out of the spiral installation slot 62, so that the spiral air pad 72 is pulled out, so that the spiral rubber arm 71 and the spiral air pad 72 are reeled onto the reel 200, and the filler on the spiral air pad 72 falls into the discharge port 300 during the reeling process and is discharged;

[0059] S8: With the continuous rotation of the winding shaft 200, the fillers in the old material area are discharged, and the fillers in the secondary new material area have a suitable biofilm thickness due to long-term use. With the continuous movement of the spiral material holding structure 7, the fillers in the secondary new material area enter the bottom of the tower body 1 to form usable fillers, and the fillers in the new material area will enter the middle part of the tower body 1 to form a new secondary new material area. The spiral air permeable pad 72 that enters later is fed through the feeding device to form a new new material area, and the replacement of the fillers is completed.

[0060] The above description is only a preferred specific implementation manner 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 scheme and inventive concept 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 VOCs treatment equipment for pharmaceutical and chemical production, characterized in that: It includes a tower body and a central tube installed therein, the top of the tower body is an air outlet, the bottom is an air inlet, a spiral alternating material replacing device is arranged between the tower body and the central tube, the spiral alternating material replacing device includes a spiral mounting structure fixed on the tower body and the central tube, and also includes a spiral material containing structure movable in the spiral mounting structure; The spiral mounting structure comprises two spiral mounting arms respectively fixed on the tower body and the central tube, a spiral mounting groove is provided in the spiral mounting arms, the spiral material holding structure comprises two spiral rubber arms respectively inserted in the spiral mounting grooves on both sides, and also comprises a spiral air-permeable pad fixed between the two spiral rubber arms, a filler is laid on the spiral air-permeable pad, the filler is a light-weight filler, an inlet of the spiral material holding structure is provided at the top of the spiral mounting structure passing through the tower body, and an outlet of the spiral material holding structure is provided at the bottom of the spiral mounting structure passing through the tower body, after long-term use, the filler on the spiral air-permeable pad is located at the top, middle and bottom of the tower body to form a new material area, a second-new material area and an old material area respectively; A spiral movable groove is also provided in the spiral mounting arm, a rope cavity is provided in the spiral rubber arm, a traction rope is fixedly installed in the rope cavity, the length of the traction rope exposed outside the rope cavity is greater than the length of the spiral mounting groove, a movable block is movable in the spiral movable groove, and a fixing hole is provided in the fixing hole for connecting the traction rope.

2. A VOCs treatment equipment for pharmaceutical and chemical production according to claim 1, characterized in that: A material shaking device is provided between the spiral mounting structure and the spiral material holding structure, the material shaking device comprises a spiral plate fixed between two spiral mounting arms, a plurality of first protrusions are evenly distributed on the spiral plate in the old material area, the material shaking device also comprises a spiral rubber plate fixed between two spiral rubber arms, a plurality of second protrusions which are evenly distributed on the spiral rubber plate and are adapted to the first protrusions.

3. A VOCs treatment equipment for pharmaceutical and chemical production according to claim 1, characterized in that: A reel box is fixedly installed at the bottom of the tower body, and a reel rack with a reeling spiral material holding structure is installed in the reel box. A feeding device is also installed in the reel box. A storage box is fixedly installed at the bottom of the tower body, and a reel shaft for reeling the spiral material holding structure is rotatably installed in the storage box.

4. A VOCs treatment device for pharmaceutical and chemical production according to claim 3, characterized in that: The winding rack includes a chassis rotatably mounted at the bottom of the unwinding box, and a support column fixed on the chassis. The bottom of the storage box is fixed and connected to a discharge port. A motor for driving the winding shaft is fixed in the storage box. The spiral rubber arm is provided with a plurality of grooves on one side close to the spiral movable groove.

5. The VOCs treatment equipment for pharmaceutical and chemical production according to claim 3 is characterized in that: The feeding device includes an entrance and exit opened between the unwinding box and the tower body, and a discharge hopper fixed on the entrance and exit, the discharge hopper is provided with a feeding channel with a discharge port located in the entrance and exit, a first guide roller is rotatably installed in the entrance and exit, a mounting frame is fixedly installed on the unwinding box, and a second guide roller is rotatably installed on the mounting frame, and the spiral material holding structure enters into the spiral mounting structure from between the first guide roller and the second guide roller.

6. The VOCs treatment equipment for pharmaceutical and chemical production according to claim 1, characterized in that: A spiral water pipe is fixedly installed in the central tube, and a plurality of water outlets are arranged on the spiral water pipe above the spiral air-permeable pad. A water pipe having one end connected to the spiral water pipe is also fixed in the central tube. A water tank is fixedly installed at the bottom of the tower body, and a water pump is arranged in the water tank. The other end of the water pipe is fixed to and connected to the water outlet end of the water pump.

7. A method for treating VOCs for pharmaceutical and chemical production, using a VOCs treatment device for pharmaceutical and chemical production as described in any one of claims 1 to 6, characterized in that: The following steps are involved: S1: Fix the traction ropes on both sides of the spiral rubber arm in the two fixing holes respectively, and then put the two moving blocks through the entrance and exit respectively into the spiral moving groove at the entrance of the spiral material holding structure. The two moving blocks will slide down from the spiral moving grooves on both sides. The moving blocks drive the traction ropes to move from the top of the spiral installation groove to the bottom of the spiral installation groove, and then discharge from the spiral installation groove to the exit of the spiral material holding structure; S2: Pull the two moving blocks at the outlet of the spiral material holding structure, manually remove the spiral material holding structure from the winding frame, pass the spiral material holding structure through the inlet and outlet, insert the spiral rubber arm into the spiral installation slot and move inside it, then pull the traction rope at one end and rotate the winding frame at one end to put the spiral material holding structure into the tower body, and the spiral material holding structure will enter the tower body from between the first guide roller and the second guide roller; S3: Fillers are input into the discharge hopper, and the fillers are output from the feeding channel to the moving spiral air-permeable pad. As the material is continuously fed into the discharge hopper, the spiral air-permeable pad entering the tower body through the inlet and outlet is evenly covered with fillers; S4: As the traction rope is continuously pulled and the winding frame is continuously rotated, the spiral material holding structure is put into the tower body, and the spiral material holding structure will be completely installed between the two spiral installation arms. Then, the pulling of the cutting groove and the rotation of the winding frame are stopped, and the traction rope is removed from the fixing hole. The two ends of the traction rope are respectively fixed to the two ends of the winding shaft, that is, the spiral material holding structure is installed. S5: Start the water pump in the water tank to deliver water to the water delivery pipe, so that the water is discharged from the water outlet through the spiral water pipe to the fillers of each layer, and the waste gas is input into the air inlet through the air inlet pipe. The waste gas passes through the spiral air pads of each layer, and the microorganisms on the fillers capture and degrade VOCs. Finally, the treated waste gas is discharged through the air outlet pipe, and the waste gas treatment is completed; S6: After the equipment has been used for a long time, the spiral air pads at the top, middle and bottom of the tower body form new material areas, second-new material areas and old material areas respectively, and the fillers need to be replaced; S7: Start the motor in the storage box to drive the reel to rotate, so that the traction ropes fixed at both ends of the reel are reeled in, which will pull the spiral rubber arm out of the spiral installation groove, so that the spiral air pad is pulled out, so that the spiral rubber arm and the spiral air pad are reeled onto the reel, and the filler on the spiral air pad falls into the discharge port during the reeling process and is discharged; S8: With the continuous rotation of the reel, the fillers in the old material area are discharged, and the fillers in the secondary material area have a suitable biofilm thickness due to long-term use. With the continuous movement of the spiral material holding structure, the fillers in the secondary material area enter the bottom of the tower body to form usable fillers, and the fillers in the new material area will enter the middle part of the tower body to form a new secondary material area. The spiral air permeable pad that enters later is fed through the feeding device to form a new new material area, and the filler replacement is completed.

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