CN118615809A - Plastic processing waste gas purifier - Google Patents

Abstract

The invention belongs to the technical field of plastic processing, in particular to a plastic processing waste gas purifier which comprises a purifying tower, wherein an output end of a cylinder is rotationally connected with a pushing plate, and a filter screen is fixedly connected to the lower side of the pushing plate; according to the invention, the air cylinder is started to enable the pushing plate to pass through the spray frame to move downwards to squeeze water in the purifying tower, so that water in the purifying tower flows to the upper side of the pushing plate from the water outlet pipe through the filter screen, dust particles and the like are compacted at the bottom of the purifying tower by the pushing plate, so that dust in the purifying tower can be separated from the water in the continuous spraying process, dust particles attached to the inner wall of the purifying tower are removed, dust accumulation on the inner wall of the purifying tower is prevented from preferentially adsorbing dust in waste gas, the efficiency of removing dust in the waste gas is improved, dust in the purifying waste gas and dust separation from waste water are carried out in the purifying tower, waste water is not required to be separated from the dust again after the waste water is discharged out of the purifying tower, and the efficiency of waste gas generated by plastic processing is improved.

Description

A plastic processing waste gas purifier

Technical Field

The invention belongs to the technical field of plastic processing, in particular to a waste gas purifier for plastic processing.

Background Art

Plastic processing refers to various processes that convert synthetic resins or plastics into plastic products. Plastic processing generally includes plastic batching, molding, machining, joining, modification and assembly. Volatile organic compounds, formaldehyde and other harmful waste gases are often produced during plastic processing. These waste gases must be effectively purified and controlled before they can be discharged. Dust removal towers, adsorption equipment and biological filtration are usually used to purify the waste gases.

A patent with publication number CN213853742U discloses a waste gas purification device for plastic product processing, including a filter box, a spray device fixedly installed on the right side of the water tank; at the same time, the second motor drives the rotating shaft to drive the first bevel gear to rotate, and then the first bevel gear drives the second bevel gear to rotate, thereby driving the fan blades to rotate to accelerate the flow of waste gas, and then passes through two layers of activated carbon filters to adsorb and purify the waste gas, and then flows into the liquid at the bottom of the purification box for purification again, and then flows out from the discharge pipe after purification, thereby reducing the harm of waste gas to operators.

In the above scheme, when purifying dust in the exhaust gas through the spray tower, the spray tower only removes the dust in the exhaust gas, and the wastewater after dust reduction needs to be separated from the dust by filtering equipment. The efficiency of the exhaust gas purification process is low, and dust mixed with water mist will remain on the inner wall of the spray tower, resulting in the problem of dust accumulation on the inner wall of the spray tower for a long time, which reduces the efficiency of the spray tower in purifying dust in the exhaust gas.

To this end, the present invention provides a plastic processing waste gas purifier.

Summary of the invention

In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

The technical solution adopted by the present invention to solve its technical problems is: a plastic processing waste gas purifier described in the present invention comprises a purification tower, a spray rack is fixedly connected in the purification tower, an air inlet pipe is fixedly connected to one side of the purification tower, an air outlet pipe is fixedly connected to the other side of the purification tower, a cylinder is fixedly connected to the upper side of the purification tower, a push plate is rotatably connected to the output end of the cylinder, a filter is fixedly connected to the lower side of the push plate, an outlet pipe is fixedly connected to one side of the push plate, a plurality of openings are provided on the push plate, the spray rack can slide in the push plate through the plurality of openings, a first motor is fixedly connected to the lower side of the purification tower, a dust removal device is provided at the output end of the first motor, the dust removal device comprises a first dust removal fan fixedly connected to the output end of the first motor, a dust removal port matching the first dust removal fan is provided at the lower side of the purification tower, a plurality of adsorption boxes are provided on one side of the purification tower, and the air outlet pipe is connected to the plurality of adsorption boxes through a pipeline.

Preferably, the spray rack is arranged in a circular array, and a plurality of closing devices are provided in the push plate on one side of the spray rack, the closing device includes a closing block slidably connected to one side of the push plate, two fixing rods are fixedly connected to one side of the push plate, both of the fixing rods are slidably connected to the closing block, a second spring is sleeved on the two fixing rods, one end of the two second springs is fixedly connected to the push plate, and the other end of the two second springs is fixedly connected to the closing block, and one side of the closing block is arranged in an arc shape.

Preferably, a second dust removal fan is slidably connected to the upper side of the first dust removal fan, a plurality of fixed columns are fixedly connected inside the second dust removal fan, a plurality of fixed columns are sleeved with a first spring, one end of a plurality of the first springs are fixedly connected to the second dust removal fan, and the other end of a plurality of the first springs are fixedly connected to the first dust removal fan.

Preferably, a reflux pipe is fixedly connected to the lower side of the purification tower, a one-way valve is fixedly connected inside the reflux pipe, and the reflux pipe is connected to the water outlet pipe through a pipeline.

Preferably, a scraper is fixedly connected to the output end of the cylinder, and the scraper is slidably connected to the push plate. A threaded groove is provided on the inner wall of the purification tower, and a slider is fixedly connected to one side of the push plate, and the slider can slide in the threaded groove.

Preferably, the multiple adsorption boxes are fixedly connected by an adsorption tube, the two adsorption tubes located on both sides of the adsorption box are connected by a conversion tube, three-way valves are provided at the connections between the multiple adsorption tubes and the conversion tubes, activated carbon cabinets are provided in the multiple adsorption boxes, threaded tubes are fixedly connected on both sides of the multiple activated carbon cabinets, one side of the multiple adsorption tubes is rotatably connected with a ring, and the multiple rings are threadedly connected to the threaded pipe.

Preferably, a disassembly device is provided on both sides of the plurality of adsorption boxes, the disassembly device comprises a worm rotatably connected in the adsorption box, a worm wheel rotatably connected in one side of the adsorption box, the worm is meshingly connected with the worm wheel, and the worm wheel is slidably connected with the ring.

Preferably, one side of each of the adsorption boxes is rotatably connected to a cabinet door, and one side of each of the cabinet doors is provided with a handle. The two worm gears in the same adsorption box are connected via a transmission belt, and one end of the worm gear close to the handle extends to the outside of the adsorption box and is fixed with a hexagonal bolt.

Preferably, a second motor is fixedly connected to one side of each of the adsorption boxes, a threaded rod is fixedly connected to the output end of each of the second motors, a clamping plate is slidably connected to the lower side of each of the adsorption boxes, each of the clamping plates is threadedly connected to the threaded rod, and each of the clamping plates is clamped to the activated carbon cabinet.

Preferably, two fixed plates are fixedly connected in each of the plurality of adsorption boxes, and a plurality of rollers are rotatably connected between the two fixed plates and the adsorption boxes, and the plurality of activated carbon cabinets can slide on the rollers.

The beneficial effects of the present invention are as follows:

1. The plastic processing waste gas purifier described in the present invention starts the cylinder to make the push plate pass through the spray frame and move downward to squeeze the water in the purification tower, so that the water in the purification tower flows from the water outlet pipe to the upper side of the push plate through the filter screen, so that the dust particles and the like are compacted by the push plate at the bottom of the purification tower, and then the first motor is started to rotate the first dust removal fan to push the dust at the bottom of the purification tower out of the dust removal port, so that the dust in the purification tower can be separated from the water during the continuous spraying process, and the dust particles attached to the inner wall of the purification tower can be removed, so as to prevent the dust from accumulating on the inner wall of the purification tower, and preferentially adsorb the dust in the exhaust gas, thereby improving the efficiency of removing the dust in the exhaust gas, and purifying the dust in the exhaust gas and separating the dust from the wastewater are all carried out in the purification tower, without the need to separate the wastewater from the dust again after discharging the wastewater from the purification tower, thereby improving the efficiency of purifying the exhaust gas generated by plastic processing.

2. The plastic processing waste gas purifier described in the present invention rotates the ring to move the adsorption tube toward the direction of the threaded tube, so that the threaded tube and the adsorption tube are sealed and connected, and the flow of waste gas in multiple adsorption boxes is controlled by a three-way valve. When the activated carbon cabinet in one of the adsorption boxes is replaced, the three-way valve is controlled so that the waste gas no longer flows into the activated carbon cabinet but flows into another activated carbon cabinet through the conversion tube. Therefore, the waste gas can be continuously adsorbed and purified when the activated carbon cabinet in the adsorption box is replaced.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic diagram of the cross-sectional structure of a purification tower according to the present invention;

3 is a schematic cross-sectional structure diagram of a push plate of the present invention;

FIG4 is a schematic cross-sectional structure diagram of a second dust removal fan of the present invention;

FIG5 is a schematic diagram of the cross-sectional structure of the adsorption box of the present invention;

FIG6 is a schematic diagram of the structure of the fixing plate of the present invention;

7 is a schematic diagram of the structure of the threaded pipe of the present invention;

FIG8 is a schematic diagram of the cross-sectional structure of the sleeve ring of the present invention;

In the figure: 1, purification tower; 2, air inlet pipe; 3, reflux pipe; 4, air outlet pipe; 5, three-way valve; 6, conversion pipe; 7, water outlet pipe; 8, cylinder; 9, push plate; 10, adsorption box; 11, filter screen; 12, spray rack; 13, scraper; 14, threaded groove; 15, first motor; 16, first dust removal fan; 17, second dust removal fan; 18, slider; 19, handle; 20, fixed column; 21, first spring; 22, fixed rod; 23, second spring; 24, closing block; 25, activated carbon cabinet; 26, adsorption tube; 27, worm; 28, worm wheel; 30, transmission belt; 31, second motor; 32, threaded rod; 34, roller; 35, fixed plate; 36, card plate; 37, collar; 38, threaded pipe.

DETAILED DESCRIPTION

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

Embodiment 1: As shown in Figures 1 to 4, a plastic processing waste gas purifier described in an embodiment of the present invention includes a purification tower 1, a spray rack 12 is fixedly connected to the purification tower 1, an air inlet pipe 2 is fixedly connected to one side of the purification tower 1, and an air outlet pipe 4 is fixedly connected to the other side of the purification tower 1. A cylinder 8 is fixedly connected to the upper side of the purification tower 1, and a push plate 9 is rotatably connected to the output end of the cylinder 8. A filter screen 11 is fixedly connected to the lower side of the push plate 9, and a water outlet pipe 7 is fixedly connected to one side of the push plate 9. The push plate 9 is provided with a plurality of openings, and the spray rack 12 can slide in the push plate 9 through the plurality of openings. A first motor 15 is fixedly connected to the lower side of the purification tower 1, and a dust removal device is provided at the output end of the first motor 15. The dust removal device includes a first dust removal fan 16 fixedly connected to the output end of the first motor 15, and a dust removal port matching the first dust removal fan 16 is provided at the lower side of the purification tower 1. A plurality of adsorption boxes 10 are provided on one side of the purification tower 1, and the air outlet pipe 4 is connected to the plurality of adsorption boxes 10 through a pipeline.

Specifically, at present, when purifying the waste gas generated during plastic processing, the waste gas is passed into a spray tower and sprayed with water mist. The water mist and the dust particles in the waste gas are mixed and fall down and discharged from the spray tower through the water outlet at the bottom of the spray tower. The dust and wastewater are separated and processed by separation and filtration equipment to complete the dust removal of the waste gas. The waste gas after spraying is passed into an activated carbon adsorption equipment, and the harmful substances and organic matter in the waste gas are adsorbed by multiple activated carbon adsorption equipment. Finally, the adsorbed waste gas is passed into subsequent purification equipment for purification. When the dust in the waste gas is purified by the spray tower, the spray tower only removes the dust in the waste gas, and the wastewater after the dust is settled needs to be separated from the dust and wastewater by a filtering equipment. The efficiency of the waste gas purification process is low, and the dust mixed with water mist will remain on the inner wall of the spray tower, resulting in the problem of dust accumulation on the inner wall of the spray tower for a long time, which reduces the efficiency of the spray tower in purifying the dust in the waste gas.

In this embodiment, when purifying waste gas generated during plastic processing, the waste gas after plastic processing is introduced into the purification tower 1 through the air inlet pipe 2, and the water mist is sprayed by the spray rack 12 to mix with dust and other particles in the waste gas and fall into the bottom of the purification tower 1. The waste gas after spraying flows through the outlet pipe 4 and the pipeline to multiple adsorption boxes 10 for adsorption purification. After the purification tower 1 sprays and purifies for a period of time, the cylinder 8 is started to make the push plate 9 pass through the spray rack 12 and move downward to squeeze the water in the purification tower 1, so that the water in the purification tower 1 flows from the water outlet pipe 7 to the upper side of the push plate 9 through the filter screen 11, so that the dust particles are compacted by the push plate 9 in the purification tower. At the bottom of the purification tower 1, the first motor 15 is started to rotate the first dust removal fan 16 to push the dust at the bottom of the purification tower 1 out of the dust removal port, so that the dust in the purification tower 1 can be separated from the water during continuous spraying, and the dust particles attached to the inner wall of the purification tower 1 are removed to prevent dust accumulation on the inner wall of the purification tower 1. The dust in the exhaust gas is preferentially adsorbed, thereby improving the efficiency of removing dust from the exhaust gas. The dust in the exhaust gas is purified and the dust is separated from the wastewater in the purification tower 1. There is no need to separate the wastewater from the dust again after discharging the wastewater from the purification tower 1, thereby improving the efficiency of purifying the waste gas generated by plastic processing.

As shown in Figure 3, the spray rack 12 is arranged in a circular array, and a plurality of closing devices are provided in the push plate 9 on one side of the spray rack 12. The closing device includes a closing block 24 slidably connected to one side of the push plate 9. Two fixing rods 22 are fixedly connected to one side of the push plate 9. The two fixing rods 22 are slidably connected to the closing block 24. The two fixing rods 22 are sleeved with a second spring 23. One end of the two second springs 23 is fixed to the push plate 9, and the other end of the two second springs 23 is fixed to the closing block 24. One side of the closing block 24 is arranged in an arc shape.

Specifically, when spraying exhaust gas, water mist is sprayed through multiple spray heads on the spray frame 12. The initial position of the push plate 9 is shown in Figure 3, so that the spray frame 12 is located in the push plate 9. At this time, the closing block 24 is in an open state and compresses the second spring 23 through the fixed rod 22. When the push plate 9 moves downward to squeeze the water in the purification tower 1, the second spring 23 restores its deformation and generates elastic force to make the closing block 24 slide in the push plate 9 to close the opening, so that the push plate 9 can squeeze the wastewater in the purification tower 1, and make the wastewater flow out from the outlet pipe 7 through the filter screen 11, so that the push plate 9 can better separate the dust particles from the wastewater.

As shown in Figure 4, the second dust removal fan 17 is slidably connected to the upper side of the first dust removal fan 16, and a plurality of fixed columns 20 are fixedly connected inside the second dust removal fan 17. The plurality of fixed columns 20 are all sleeved with first springs 21, and one end of the plurality of first springs 21 is fixedly connected to the second dust removal fan 17, and the other end of the plurality of first springs 21 is fixedly connected to the first dust removal fan 16.

Specifically, when the dust particles are discharged from the purification tower 1, when the pushing plate 9 squeezes the water in the purification tower 1 to the bottom, the distance that the pushing plate 9 can push is different according to the amount of dust in the purification tower 1. The pushing plate 9 presses the second dust removal fan 17 to move downward, and the second dust removal fan 17 compresses the first spring 21 through the fixed column 20, so that the dust particles and the wastewater can be fully separated. Then the first motor 15 is started to make the first dust removal fan 16 rotate with the second dust removal fan 17. While the second dust removal fan 17 scrapes the dust particles at the bottom of the purification tower 1, the dust particles on the filter screen 11 can also be scraped out of the purification tower 1.

As shown in FIG. 2 , a reflux pipe 3 is fixedly connected to the lower side of the purification tower 1 , a one-way valve is fixedly connected inside the reflux pipe 3 , and the reflux pipe 3 is connected to the water outlet pipe 7 through a pipeline.

Specifically, when the cylinder 8 moves the push plate 9 upward, due to the sealed sliding between the push plate 9 and the inner wall of the purification tower 1, the space below the push plate 9 will have negative pressure, causing the one-way valve in the reflux pipe 3 to open, so that the waste water on the upper side of the push plate 9 will be sucked back into the purification tower 1 through the outlet pipe 7 and the reflux pipe 3.

As shown in FIG2 , a scraper 13 is fixedly connected to the output end of the cylinder 8 , and the scraper 13 is slidably connected to the push plate 9 . A threaded groove 14 is provided on the inner wall of the purification tower 1 , and a slider 18 is fixedly connected to one side of the push plate 9 , and the slider 18 can slide in the threaded groove 14 .

Specifically, when the push plate 9 moves upward, the push plate 9 moves downward while sliding the slider 18 in the thread groove 14. The slider 18 slides in the thread groove 14 to rotate the push plate 9, and the dust particles on the upper surface of the push plate 9 can be scraped off by the scraper 13.

Embodiment 2: As shown in FIG. 5 to FIG. 8 , compared with Embodiment 1, another embodiment of the present invention is:

The multiple adsorption boxes 10 are fixedly connected by adsorption tubes 26, and the two adsorption tubes 26 located on both sides of the adsorption box 10 are connected by a conversion tube 6. Three-way valves 5 are provided at the connection between the multiple adsorption tubes 26 and the conversion tube 6. Activated carbon cabinets 25 are provided in the multiple adsorption boxes 10, and threaded tubes 38 are fixedly connected to both sides of the multiple activated carbon cabinets 25. One side of the multiple adsorption tubes 26 is rotatably connected to a ring 37, and the multiple rings 37 are threadedly connected to the threaded tube 38.

Specifically, when the exhaust gas is adsorbed and purified by the activated carbon cabinets 25 in a plurality of adsorption boxes 10, the collar 37 is rotated to move the collar 37 with the adsorption tube 26 toward the direction of the threaded tube 38, so that the threaded tube 38 and the adsorption tube 26 are sealed and connected, and the flow of the exhaust gas in the plurality of adsorption boxes 10 is controlled by the three-way valve 5. When the activated carbon cabinet 25 in one of the adsorption boxes 10 is replaced, the three-way valve 5 is controlled so that the exhaust gas no longer flows into the activated carbon cabinet 25 but flows into another activated carbon cabinet 25 through the conversion tube 6. This means that the exhaust gas can continue to be adsorbed and purified when the activated carbon cabinet 25 in the adsorption box 10 is replaced.

As shown in Figure 5, disassembly devices are provided on both sides of multiple adsorption boxes 10, and the disassembly devices include a worm 27 rotatably connected to the adsorption box 10, and a worm wheel 28 rotatably connected to one side of the adsorption box 10, the worm 27 is meshingly connected to the worm wheel 28, and the worm wheel 28 is slidably connected to the ring 37.

Specifically, when replacing the activated carbon cabinet 25 in the adsorption box 10, the worm 27 is rotated to make the worm wheel 28 drive the ring 37 to rotate, so that the ring 37 is unscrewed from the threaded tube 38 to disconnect the activated carbon cabinet 25 from the adsorption tube 26, and the activated carbon cabinet 25 can be taken out of the adsorption box 10 for replacement.

As shown in Figure 6, one side of multiple adsorption boxes 10 is rotatably connected to a cabinet door, and one side of multiple cabinet doors is provided with a handle 19. The two worm gears 27 located in the same adsorption box 10 are connected through a transmission belt 30, and one end of the worm gear 27 close to the handle 19 extends to the outside of the adsorption box 10 and is fixed with a hexagonal bolt.

Specifically, the hexagonal bolt on one side is rotated to make the two worms 27 rotate simultaneously through the transmission belt 30, and the threaded pipes 38 on both sides of the activated carbon cabinet 25 are disassembled simultaneously.

As shown in Figure 6, a second motor 31 is fixedly connected to one side of the multiple adsorption boxes 10, and a threaded rod 32 is fixedly connected to the output end of the multiple second motors 31. A clamping plate 36 is slidably connected to the lower side of the multiple adsorption boxes 10, and the multiple clamping plates 36 are threadedly connected to the threaded rod 32, and the multiple clamping plates 36 are clamped to the activated carbon cabinet 25.

Specifically, when the activated carbon cabinet 25 is replaced, the second motor 31 is started to rotate the threaded rod 32 to slide the clamping plate 36 in the adsorption box 10, and the clamping plate 36 moves to move the activated carbon cabinet 25 in the adsorption box 10 for replacement.

As shown in FIG. 6 , two fixing plates 35 are fixedly connected to the adsorption boxes 10 . A plurality of rollers 34 are rotatably connected between the two fixing plates 35 and the adsorption boxes 10 . The plurality of activated carbon cabinets 25 can slide on the rollers 34 .

Specifically, when the activated carbon cabinet 25 is moved and replaced in the adsorption box 10, the activated carbon cabinet 25 will slide on multiple rollers 34, so that the activated carbon cabinet 25 can be moved faster in the adsorption box 10 for replacement, and a block is also provided at one end of the fixed plate 35, so that the clamping plate 36 can move the activated carbon cabinet 25 to a suitable position so that the threaded tube 38 can be connected to the adsorption tube 26.

Working principle: when purifying the waste gas generated during plastic processing, the waste gas after plastic processing is introduced into the purification tower 1 through the air inlet pipe 2, and the water mist is sprayed through the spray rack 12 to mix with the dust and other particles in the waste gas and fall into the bottom of the purification tower 1. The waste gas after spraying flows through the outlet pipe 4 and the pipeline to multiple adsorption boxes 10 for adsorption purification. After the purification tower 1 sprays and purifies for a period of time, the cylinder 8 is started to make the push plate 9 pass through the spray rack 12 and move downward to squeeze the water in the purification tower 1, so that the water in the purification tower 1 flows from the water outlet pipe 7 to the upper side of the push plate 9 through the filter screen 11, so that the dust particles are compacted by the push plate 9 at the bottom of the purification tower 1, and then the first motor 15 is started to make the first dust removal fan 16 rotate to push the dust at the bottom of the purification tower 1 out of the dust removal port, so that the dust in the purification tower 1 can be separated from the water during the continuous spraying process, and the dust particles attached to the inner wall of the purification tower 1 can be removed;

When spraying the exhaust gas, water mist is sprayed through the multiple spray heads on the spray frame 12. The initial position of the push plate 9 is shown in Figure 3, so that the spray frame 12 is located in the push plate 9. At this time, the closing block 24 is in the open state and the second spring 23 is compressed by the fixing rod 22. When the push plate 9 moves downward to squeeze the water in the purification tower 1, the second spring 23 restores its deformation and generates elastic force to make the closing block 24 slide and close the opening in the push plate 9, so that the push plate 9 can squeeze the waste water in the purification tower 1, and make the waste water flow out of the water outlet pipe 7 through the filter screen 11, so that the push plate 9 can better separate the dust particles from the waste water; when the dust particles are discharged from the purification tower 1, when the push plate 9 squeezes the water in the purification tower 1 to the bottom, the distance that the push plate 9 can push is different according to the amount of dust in the purification tower 1. The push plate 9 presses the second dust removal fan 17 to move downward, and The second dust removal fan 17 compresses the first spring 21 through the fixed column 20, so that the dust particles and the wastewater can be fully separated, and then the first motor 15 is started to make the first dust removal fan 16 rotate with the second dust removal fan 17. While the second dust removal fan 17 scrapes the dust particles at the bottom of the purification tower 1, the dust particles on the filter screen 11 can also be scraped out of the purification tower 1; when the cylinder 8 moves the push plate 9 upward, due to the sealing and sliding between the push plate 9 and the inner wall of the purification tower 1, the space under the push plate 9 will have a negative pressure to open the one-way valve in the return pipe 3, so that the wastewater on the upper side of the push plate 9 will be sucked back into the purification tower 1 through the outlet pipe 7 and the return pipe 3; the push plate 9 moves downward while sliding with the slider 18 in the thread groove 14, and the slider 18 slides in the thread groove 14 to rotate the push plate 9, so that the dust particles on the upper surface of the push plate 9 can be scraped off by the scraper 13;

When the exhaust gas is adsorbed and purified by the activated carbon cabinets 25 in the multiple adsorption boxes 10, the ring 37 is rotated to make the ring 37 move with the adsorption tube 26 toward the direction of the threaded tube 38, so that the threaded tube 38 and the adsorption tube 26 are sealed and connected, and the flow of the exhaust gas in the multiple adsorption boxes 10 is controlled by the three-way valve 5. When the activated carbon cabinet 25 in one of the adsorption boxes 10 is replaced, the three-way valve 5 is controlled so that the exhaust gas no longer flows into the activated carbon cabinet 25 but flows into another activated carbon cabinet 25 through the conversion tube 6, so that the exhaust gas can be continuously adsorbed and purified when the activated carbon cabinet 25 in the adsorption box 10 is replaced; when the activated carbon cabinet 25 in the adsorption box 10 is replaced, the worm 27 is rotated to make the worm wheel 28 drive the ring 37 to rotate, so that the ring 37 is screwed out of the threaded tube 38 to remove the activated carbon. The activated carbon cabinet 25 is disconnected from the adsorption tube 26, and the activated carbon cabinet 25 can be taken out of the adsorption box 10 for replacement; the hexagonal bolt on one side is rotated to make the two worms 27 rotate simultaneously through the transmission belt 30, and the threaded tubes 38 on both sides of the activated carbon cabinet 25 are disassembled simultaneously; when replacing the activated carbon cabinet 25, the second motor 31 is started to make the threaded rod 32 rotate and drive the card plate 36 to slide in the adsorption box 10, and the card plate 36 moves and drives the activated carbon cabinet 25 to move in the adsorption box 10 for replacement; the activated carbon cabinet 25 will slide on multiple rollers 34, so that the activated carbon cabinet 25 can be moved faster in the adsorption box 10 for replacement, and a stopper is also provided at one end of the fixed plate 35, so that the card plate 36 can move the activated carbon cabinet 25 to a suitable position so that the threaded tube 38 can be connected to the adsorption tube 26.

The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims (10)

1. A plastic processing waste gas purifier, characterized in that it comprises a purification tower (1), a spray rack (12) is fixedly connected inside the purification tower (1), an air inlet pipe (2) is fixedly connected to one side of the purification tower (1), an air outlet pipe (4) is fixedly connected to the other side of the purification tower (1), a cylinder (8) is fixedly connected to the upper side of the purification tower (1), a push plate (9) is rotatably connected to the output end of the cylinder (8), a filter screen (11) is fixedly connected to the lower side of the push plate (9), a water outlet pipe (7) is fixedly connected to one side of the push plate (9), and a plurality of openings are provided on the push plate (9) openings, the spray rack (12) can slide in the push plate (9) through the multiple openings, a first motor (15) is fixedly connected to the lower side of the purification tower (1), a dust removal device is provided at the output end of the first motor (15), the dust removal device includes a first dust removal fan (16) fixedly connected to the output end of the first motor (15), a dust removal port matching the first dust removal fan (16) is provided on the lower side of the purification tower (1), a plurality of adsorption boxes (10) are provided on one side of the purification tower (1), and the air outlet pipe (4) is connected to the plurality of adsorption boxes (10) through a pipeline. 2. A plastic processing waste gas purifier according to claim 1, characterized in that: the spray frame (12) is arranged in a circular array, and a plurality of closing devices are arranged in the push plate (9) on one side of the spray frame (12), and the closing device includes a closing block (24) slidably connected to one side of the push plate (9), and two fixing rods (22) are fixedly connected to one side of the push plate (9), and the two fixing rods (22) are both slidably connected to the closing block (24), and the two fixing rods (22) are sleeved with a second spring (23), one end of the two second springs (23) are fixedly connected to the push plate (9), and the other end of the two second springs (23) are fixedly connected to the closing block (24), and one side of the closing block (24) is arranged in an arc shape. 3. A plastic processing waste gas purifier according to claim 2, characterized in that: the first dust removal fan (16) is slidably connected to the upper side with the second dust removal fan (17), and a plurality of fixing columns (20) are fixedly connected inside the second dust removal fan (17), and a plurality of the fixing columns (20) are sleeved with a first spring (21), and one end of a plurality of the first springs (21) are fixedly connected to the second dust removal fan (17), and the other end of a plurality of the first springs (21) are fixedly connected to the first dust removal fan (16). 4. A plastic processing waste gas purifier according to claim 3, characterized in that: a return pipe (3) is fixedly connected to the lower side of the purification tower (1), a one-way valve is fixedly connected inside the return pipe (3), and the return pipe (3) is connected to the water outlet pipe (7) through a pipeline. 5. A plastic processing waste gas purifier according to claim 4, characterized in that: a scraper (13) is fixedly connected to the output end of the cylinder (8), and the scraper (13) is slidably connected to the push plate (9), and a threaded groove (14) is opened on the inner wall of the purification tower (1), and a slider (18) is fixedly connected to one side of the push plate (9), and the slider (18) can slide in the threaded groove (14). 6. A plastic processing waste gas purifier according to claim 1, characterized in that: a plurality of the adsorption boxes (10) are fixedly connected by an adsorption tube (26), two adsorption tubes (26) located on both sides of the adsorption box (10) are connected by a conversion tube (6), a three-way valve (5) is provided at the connection between the plurality of the adsorption tubes (26) and the conversion tube (6), an activated carbon cabinet (25) is provided in the plurality of the adsorption boxes (10), both sides of the plurality of the activated carbon cabinets (25) are fixedly connected with threaded tubes (38), one side of the plurality of the adsorption tubes (26) is rotatably connected with a collar (37), and the plurality of the collars (37) are threadedly connected to the threaded tube (38). 7. A plastic processing waste gas purifier according to claim 6, characterized in that: a plurality of adsorption boxes (10) are provided with disassembly devices on both sides, the disassembly devices include a worm (27) rotatably connected to the adsorption box (10), a worm wheel (28) rotatably connected to one side of the adsorption box (10), the worm (27) and the worm wheel (28) are meshingly connected, and the worm wheel (28) is slidably connected to the ring (37). 8. A plastic processing waste gas purifier according to claim 7, characterized in that: one side of the plurality of adsorption boxes (10) is rotatably connected to a cabinet door, one side of the plurality of cabinet doors is provided with a handle (19), and the two worm gears (27) located in the same adsorption box (10) are connected by a transmission belt (30), and one end of the worm gear (27) close to the handle (19) extends to the outside of the adsorption box (10) and is fixed with a hexagonal bolt. 9. A plastic processing waste gas purifier according to claim 8, characterized in that: a second motor (31) is fixedly connected to one side of a plurality of the adsorption boxes (10), a threaded rod (32) is fixedly connected to the output end of a plurality of the second motors (31), a clamping plate (36) is slidably connected to the lower side of a plurality of the adsorption boxes (10), a plurality of the clamping plates (36) are threadedly connected to the threaded rod (32), and a plurality of the clamping plates (36) are clamped to the activated carbon cabinet (25). 10. A plastic processing waste gas purifier according to claim 9, characterized in that: two fixing plates (35) are fixedly connected to the plurality of adsorption boxes (10), and a plurality of rollers (34) are rotatably connected between the two fixing plates (35) and the adsorption boxes (10), and the plurality of activated carbon cabinets (25) can slide on the rollers (34).