A VOCs waste gas treatment device

Abstract

The present invention belongs to the technical field of waste gas treatment, and particularly relates to a VOCs waste gas treatment device, which includes an adsorption tank. A switching groove is provided in the middle of the installation column. The other end of the switching groove is connected and installed with a desorption input pipe. Two blocking blocks are symmetrically installed axially inside the switching groove. First rotating shafts are symmetrically rotatably installed inside the switching groove. The first rotating shafts are fixedly installed with baffle plates. An L-shaped arc plate is slidably connected to the installation column. A chute is provided in the installation column. A spring is installed between the chute and the L-shaped arc plate. Partition plates are installed at both the upper and lower ends of the installation column. One-way ventilation grooves are provided in the installation column. The present invention can preliminarily purify high-concentration VOCs gas through a photocatalyst, and then carry out an adsorption reaction with an activated carbon plate, which can better adsorb VOCs gas and improve the treatment effect. At the same time, the output direction of the desorbed gas and the waste gas can be switched through the output end switching component, so that the waste gas is input downward and the desorbed gas is input upward, which is convenient for practical application.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste gas treatment, and particularly relates to a VOCs waste gas treatment device. Background Art

[0002] VOCs in the general sense refers to volatile organic compounds. According to the definition of the World Health Organization, compounds with boiling points between 50°C and 260°C under normal pressure of 101.32 kPa, that is, existing in the form of gas at normal temperature; but the definition in the sense of environmental protection refers to a class of active volatile organic compounds, that is, those volatile organic compounds that will cause harm.

[0003] The volatilization of VOCs will cause air pollution in the atmosphere and indoor air, participate in the formation of ozone and fine particulate matter, harm the ecosystem, and may have an adverse impact on human health at the same time. Therefore, it is necessary to treat and recover VOCs gas. In the existing treatment of VOCs gas, the activated carbon adsorption method is usually used for adsorption treatment. However, the activated carbon method is suitable for treating waste gas with low concentration and large air volume. When the waste gas concentration is high, the adsorption material needs to be replaced frequently, and the treatment cost is high. At the same time, there is also the situation of incomplete adsorption, so it needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a VOCs waste gas treatment device for solving the problems existing in the background art.

[0005] To achieve the above technical purpose, the technical solution adopted by the present invention is as follows:

[0006] A VOCs waste gas treatment device includes an adsorption tank, a pressurizing device, a zeolite rotor and a rectification device. The pressurizing device is connected to the zeolite rotor, the zeolite rotor is connected to the adsorption tank, and the output end of the adsorption tank is connected to the rectification device.

[0007] A water outlet is installed at the lower end of the adsorption tank, and a water blocking component is installed at the water outlet. An exhaust gas input pipe is installed in the center of the adsorption tank and is connected to the output end of the zeolite rotor. An output end switching component is installed in the center of the adsorption tank.

[0008] The output end switching component includes a mounting column fixedly installed on the adsorption tank. A switching groove communicating with the exhaust gas input pipe is opened in the middle of the mounting column. The other end of the switching groove is communicated and installed with a desorption input pipe. Two blocking blocks are installed axially symmetrically inside the switching groove. A first rotating shaft is symmetrically rotatably installed inside the switching groove. A baffle is fixedly installed on the first rotating shaft. An L-shaped arc plate is slidably connected to the mounting column. A chute matching the L-shaped arc plate is opened on the mounting column. A spring is installed between the chute and the L-shaped arc plate. Partition plates are installed at both the upper and lower ends of the mounting column. A one-way ventilation groove is opened on the mounting column between the baffle and the L-shaped arc plate.

[0009] A one-way blocking member jointly and drivingly connected to the two baffles. A conveying pipeline is provided on the inner wall of the adsorption tank. An activated carbon plate is installed at the upper end of the upper partition plate, a catalyst carrier plate is installed at the lower end of the lower partition plate, and an ultraviolet tube is installed at the lower part of the adsorption tank.

[0010] The one-way blocking member includes a guide plate fixedly installed inside the switching groove. Sliding plates are symmetrically and slidably connected inside the guide plate. The two sliding plates extend out of the guide plate and abut against the baffle. The sliding plates are fixedly installed with first springs.

[0011] Round grooves communicating with the one-way ventilation grooves are provided inside the partition plates. Round holes communicating with the round grooves are provided on both sides of the two partition plates away from each other. The upper round groove communicates with the conveying pipeline.

[0012] The water blocking assembly includes a water blocking block matching the water outlet. An installation groove is provided inside the water blocking block. A second spring is installed on the lower side of the installation groove. A sealing block is hermetically and slidably connected to the lower end of the second spring. The sealing block is made of buoyant material. One-way water inlet channels are provided on the left and right sides of the water blocking block. A communication groove communicating front and back is provided at the lower end of the sealing block. One-way water outlet channels communicating with the communication groove are provided on the front and back sides of the water blocking block. A waterproof telescopic cylinder is installed at the lower end of the water blocking block.

[0013] Inclined surfaces are provided on the left and right sides of the sealing block.

[0014] A transmission shaft is rotatably installed inside the switching groove. A transmission plate matching the switching groove is installed on the side of the transmission shaft. A speed reduction assembly is installed at the output end of the transmission shaft. The output end of the speed reduction assembly is drivingly connected to a rotating column. The catalyst carrier plate is installed on the periphery of the rotating column.

[0015] The speed reduction assembly includes a first gear fixedly installed on the transmission shaft. The first gear is rotatably installed on the installation column. A toothed ring is rotatably installed on the lower partition plate. A second gear meshing with the toothed ring and the first gear is rotatably installed at the lower end of the installation column. A water isolation plate is fixedly installed between the lower end of the toothed ring and the rotating column.

[0016] The catalyst carrier plate includes a spiral plate fixedly installed on the rotating column. A hollow groove is provided in the middle of the spiral plate. Ventilation holes are provided through the spiral plate. Catalyst particles are filled in the hollow groove. The ultraviolet tube is matched with the spiral plate.

[0017] The present invention can preliminarily purify high-concentration VOCs gas through a photocatalyst, thereby reducing the concentration of the high-concentration VOCs gas. Then, through an adsorption reaction with an activated carbon plate, it can better adsorb the VOCs gas and improve the treatment effect. At the same time, it can also switch the output directions of the desorbed gas and the waste gas through an output end switching component, so that the waste gas is input downward and the desorbed gas is input upward, facilitating practical applications. Brief Description of the Drawings

[0018] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0019] Figure 1 is a schematic structural diagram of a VOCs waste gas treatment device of the present invention;

[0020] Figure 2 is a schematic structural diagram of the adsorption tank of the present invention;

[0021] Figure 3 is a schematic first sectional structure diagram of the adsorption tank of the present invention;

[0022] Figure 4 is a schematic second sectional structure diagram of the adsorption tank of the present invention;

[0023] Figure 5 is Figure 4 an enlarged structural diagram of part A in

[0024] Figure 6 is a schematic third sectional structure diagram of the adsorption tank of the present invention;

[0025] Figure 7 is Figure 6 an enlarged structural diagram of part B in

[0026] Figure 8 is Figure 6 an enlarged structural diagram of part C in

[0027] Figure 9 is a schematic fourth sectional structure diagram of the adsorption tank of the present invention;

[0028] Figure 10 is Figure 9 an enlarged structural diagram of part D in

[0029] Figure 11 is a schematic fifth sectional structure diagram of the adsorption tank of the present invention;

[0030] Figure 12 is Figure 11 an enlarged structural diagram of part E in

[0031] The main element symbols are explained as follows:

[0032] Adsorption tank 1, pressurizing device 11, zeolite rotor 12, rectification device 13, waste gas input pipe 14, desorption input pipe 15, blocking block 16, guide plate 17, sliding plate 18, first spring 19, mounting post 2, conveying pipeline 20, switching groove 21, first rotating shaft 22, baffle 23, L-shaped arc plate 24, spring 25, partition plate 26, one-way ventilation groove 27, activated carbon plate 28, catalyst carrier plate 29, ultraviolet light tube 30, water blocking block 31, second spring 32, sealing block 33, one-way water inlet channel 34, communication groove 35, one-way water outlet channel 36, round hole 37, transmission shaft 40, transmission plate 41, rotating column 42, first gear 43, tooth ring 44, second gear 45, water separation plate 46, spiral plate 50. Detailed implementation mode

[0033] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to the drawings and embodiments.

[0034] Embodiment 1: As Figure 1-12 shown, a VOCs waste gas treatment device of the present invention includes an adsorption tank 1, a pressurizing device 11, a zeolite rotor 12 and a rectification device 13. The pressurizing device 11 is connected to the zeolite rotor 12, the zeolite rotor 12 is connected to the adsorption tank 1, and the output end of the adsorption tank 1 is connected to the rectification device 13.

[0035] A water outlet is installed at the lower end of the adsorption tank 1, and a water blocking component is installed at the water outlet. An exhaust gas input pipe 14 is installed in the center of the adsorption tank 1 and is connected to the output end of the zeolite rotor 12. An output end switching component is installed in the center of the adsorption tank 1.

[0036] The output end switching component includes a mounting post 2 fixedly installed on the adsorption tank 1. A switching groove 21 communicating with the exhaust gas input pipe 14 is opened in the middle of the mounting post 2. The other end of the switching groove 21 is connected to a desorption input pipe 15. Two blocking blocks 16 are installed axially symmetrically inside the switching groove 21. First rotating shafts 22 are symmetrically rotatably installed inside the switching groove 21. Baffles 23 are fixedly installed on the first rotating shafts 22. An L-shaped arc plate 24 is slidably connected to the mounting post 2. A sliding groove matching the L-shaped arc plate 24 is opened in the mounting post 2. A spring 25 is installed between the sliding groove and the L-shaped arc plate 24. Partition plates 26 are installed at both the upper and lower ends of the mounting post 2. A one-way ventilation groove 27 located between the baffle 23 and the L-shaped arc plate 24 is opened in the mounting post 2.

[0037] A one-way blocking member jointly driven by the two baffles 23. A conveying pipeline 20 is opened on the inner wall of the adsorption tank 1. An activated carbon plate 28 is installed at the upper end of the upper partition plate 26, and a catalyst carrier plate 29 is installed at the lower end of the lower partition plate 26. An ultraviolet light tube 30 is installed at the lower part of the adsorption tank 1.

[0038] When treating and recovering VOCs waste gas, the waste gas is first pretreated, including filtration and cooling, and then enters the zeolite rotor 12 through a pipeline for concentration. The temperature of the concentrated gas becomes higher, and then after condensation, it is pressurized by a pressurizing device 11 and then introduced into the air collecting box. After being distributed by the air collecting box, it enters several working adsorption tanks for adsorption and purification; two partition plates 26 divide the adsorption tank 1 into an upper low-concentration adsorption space, that is, an activated carbon adsorption space, and a lower high-concentration adsorption space, that is, a photocatalyst adsorption space; in this way, the high-concentration VOCs waste gas is preferentially introduced into the lower photocatalyst adsorption space for adsorption, and then when the conveying pressure drops, the waste gas is squeezed through the conveying pipeline 20 and enters the upper activated carbon adsorption space for adsorption. This can avoid the situation that the activated carbon plate directly contacts the high-concentration waste gas and causes incomplete adsorption, and at the same time, it can also improve the adsorption effect of the waste gas through the cooperation of the photocatalyst and the activated carbon.

[0039] When the pretreated waste gas enters the switching groove 21 inside the adsorption tank 1 through the waste gas input pipe 14, due to the blockage of the blocking block 16, the baffle 23 can only rotate unidirectionally, that is, overcome the spring 25 to rotate to connect the waste gas input pipe 14 with the switching groove 21. Then, through the transmission of the baffle 23, a one-way blocking part is connected to limit the rotation of the baffle 23 on the other side. Thus, after the waste gas enters the switching groove 21, it enters the lower part of the adsorption tank 1 from the one-way ventilation groove 27 on the same side and reacts with the catalyst carrier plate 29. When continuously inputting waste gas into the lower part of the adsorption tank 1, the waste gas passing through the catalyst carrier plate 29 will be squeezed through the inside of the conveying pipeline 20 and then conveyed upward, so that the preliminarily adsorbed waste gas enters the lower side of the activated carbon plate 28 in the upper part of the adsorption tank 1. Then, the preliminarily adsorbed low-concentration waste gas is adsorbed through the upward activated carbon plate 28, and after adsorption, it is discharged from the exhaust port at the upper end of the adsorption tank 1. When the catalyst carrier plate 29 works, the ultraviolet light tube 30 needs to be turned on for irradiation, so that the catalyst absorbs light energy, the electron valence band transitions to the conduction band, forming electron-hole pairs, and reacting with VOCs molecules;

[0040] When the activated carbon plate 28 is saturated with adsorption, it is necessary to desorb and regenerate the activated carbon plate 28. At this time, the desorbed gas enters the switching groove 21 through the desorption input pipe. Similarly, when the desorbed gas enters the switching groove 21, it will drive the L-shaped arc plate 24 to overcome the spring 25 to rotate, and at the same time, limit the baffle 23 on the other side through the one-way blocking part. In this way, the one-way ventilation groove 27 on the same side will be exposed, and then the desorbed gas can only be output upward through the one-way ventilation groove 27 on this side. In this way, the desorbed gas directly contacts the activated carbon plate 28, reacts, and then is discharged upward.

[0041] After the adsorption is completed, opening the water blocking component can discharge the solution generated inside the adsorption tank 1;

[0042] The present invention can initially purify high-concentration VOCs gas through a photocatalyst, thereby reducing the concentration of the high-concentration VOCs gas. Then, through an adsorption reaction with an activated carbon plate, it can better adsorb the VOCs gas and improve the treatment effect. At the same time, it can also switch the output directions of the desorbed gas and the waste gas through an output terminal switching component, so that the waste gas is input downward and the desorbed gas is input upward, facilitating practical applications.

[0043] The one-way blocking member includes a guide plate 17 fixedly installed inside the switching groove 21. Two sliding plates 18 are symmetrically and slidably connected inside the guide plate 17. The two sliding plates 18 extend out of the guide plate 17 and abut against the baffle plate 23. A first spring 19 is fixedly installed on the sliding plate 18.

[0044] In the initial state, the first spring 19 causes the sliding plate 18 to extend outwards and abut against the baffle plate 23. The baffle plate 23 is kept stable under the restriction of the spring 25 and the blocking block 16, and divides the switching groove 21. When the L-shaped arc plate 24 on one side rotates against the spring 25, it will drive the sliding plate 18 on that side to move inwards against the first spring 19 until the sliding plate 18 on that side abuts against the sliding plate 18 on the other side, that is, the sliding plate 18 on the other side cannot slide under the abutment of the sliding plate 18 on that side. In this way, the baffle plate 23 on the other side cannot rotate. After the gas on that side enters the switching groove 21, it is guided by the guide plate 17, passes through the sliding plate 18 on the other side, and finally is output from the one-way ventilation groove 27 on that side. When the gas output is completed, the L-shaped arc plate 24 will return to the initial state under the restoring force of the spring 25, and at the same time, the sliding plate 18 will also return to the initial state and abut against the baffle plate 23 under the restoring force of the first spring 19.

[0045] Embodiment 2: On the basis of Embodiment 1, a further improvement is made. The water blocking component includes a water blocking block 31 that matches the water outlet. An installation groove is opened inside the water blocking block 31. A second spring 32 is installed below the installation groove. The lower end of the second spring 32 is hermetically and slidably connected to a sealing block 33. The sealing block 33 is made of a buoyant material. One-way water inlet channels 34 are opened on the left and right sides of the water blocking block 31. A communication groove 35 that communicates front and back is opened at the lower end of the sealing block 33. One-way water outlet channels 36 that communicate with the communication groove 35 are opened on the front and back sides of the water blocking block 31. A waterproof telescopic cylinder is installed at the lower end of the water blocking block 31.

[0046] In the initial state, the output end of the waterproof telescopic cylinder is flush with the installation groove. At this time, the waterproof telescopic cylinder will not affect the movement of the sealing block 33, and the sealing block 33 remains in contact with the bottom of the installation groove under the action of the second spring 32. When water is generated by the oxidation reaction of the catalyst and the waste gas, the aqueous solution will be stored in the lower part of the adsorption tank 1. Since the sealing block 33 is made of buoyant material and the aqueous solution will enter the installation groove through the one-way water inlet channel 34, when the water level of the aqueous solution gradually rises, it will drive the sealing block 33 to move upward under the action of buoyancy, overcoming the second spring 32, so that the aqueous solution enters the communication groove 35. As the aqueous solution gradually increases, when the sealing block 33 can no longer move upward, the aqueous solution will enter the one-way water outlet channel 36 from the communication groove 35 and be discharged, preventing the catalyst carrier plate 29 from being soaked by too much aqueous solution inside the adsorption tank 1;

[0047] When the activated carbon plate 28 is desorbed, organic solvents will be generated. At this time, the output end of the waterproof telescopic cylinder can be driven to move upward to abut against the sealing block 33, and the communication groove 35 is connected to the one-way water outlet channel 36, so that the organic solution can be directly discharged and input into the subsequent distillation equipment 13 for treatment.

[0048] The left and right sides of the sealing block 33 are provided with inclined surfaces. The inclined surfaces can enable the solution to better enter the installation groove.

[0049] A circular groove communicating with the one-way ventilation groove 27 is provided inside the partition plate 26. Circular holes 37 communicating with the circular groove are provided on both sides of the two partition plates 26 away from each other. The upper circular groove is communicated with the conveying pipe 20. When the gas enters the circular groove, it can be discharged from a number of circular holes 37, so that it can be evenly output downward or upward. When the organic solvents generated by desorption are collected in the upper circular groove, they will be conveyed downward from the conveying pipe 20 to the lower part of the adsorption tank 1 and finally discharged from the water blocking component.

[0050] A transmission shaft 40 is rotatably installed inside the switching groove 21. A transmission plate 41 matching the switching groove 21 is installed on the side of the transmission shaft 40. The output end of the transmission shaft 40 is provided with a speed reduction component. The output end of the speed reduction component is drivingly connected to a rotating column 42. The catalyst carrier plate 29 is installed on the periphery of the rotating column 42.

[0051] When the gas is conveyed in the switching groove 21, the gas will drive the transmission plate 41 to rotate, thereby driving the transmission shaft 40 to rotate, and decelerating through the speed reduction component. The speed reduction component can be a gear reducer, so that the transmission shaft 40 drives the rotating column 42 and the catalyst carrier plate 29 to rotate, which can improve the contact efficiency between the waste gas and the catalyst carrier plate 29, and thus improve the purification effect.

[0052] The deceleration assembly includes a first gear 43 fixedly installed on the transmission shaft 40. The first gear 43 is rotatably installed on the mounting post 2. A toothed ring 44 is rotatably installed on the lower partition plate 26. A second gear 45 that meshes with the toothed ring 44 and the first gear 43 is rotatably installed at the lower end of the mounting post 2. A water isolation plate 46 is fixedly installed between the lower end of the toothed ring 44 and the rotating column 42.

[0053] The transmission shaft 40 drives the first gear 43 to rotate, and then drives the second gear 45 to rotate through the first gear 43. Since the size of the second gear 45 is larger than that of the first gear 43, this process is a deceleration process. At the same time, when the second gear 45 rotates, it will drive the toothed ring 44 and the water isolation plate 46 to rotate. The cooperation between the size of the toothed ring 44 and the second gear 45 can also play a role in deceleration, so that the rotating column 42 slowly drives the catalyst carrier plate 29 to rotate.

[0054] The catalyst carrier plate 29 includes a spiral plate 50. The spiral plate 50 is fixedly installed on the rotating column 42. A hollow groove is formed in the middle of the spiral plate 50. Vent holes are formed through the spiral plate 50. Catalyst particles are filled in the hollow groove. The ultraviolet light tube 30 matches the spiral plate 50. The spiral catalyst carrier plate 29 can completely cover the path of the waste gas from top to bottom. At the same time, the rotating spiral plate 50 can improve the contact efficiency between the waste gas and it. The spiral ultraviolet light tube 30 can match the spiral plate 50, so that the irradiation range of the spiral plate 50 and the ultraviolet light tube 30 can also be improved during the rotation process.

[0055] The above embodiments only exemplarily illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A VOCs waste gas treatment device, comprising an adsorption tank, a pressurizing device, a zeolite rotor and a distillation device, wherein the pressurizing device is connected to the zeolite rotor, the zeolite rotor is connected to the adsorption tank, and the output end of the adsorption tank is connected to the distillation device, characterized in that: The lower end of the adsorption tank is provided with a water outlet, the water outlet is provided with a water blocking component, the center of the adsorption tank is provided with an exhaust gas input pipe connected to the output end of the zeolite wheel, and the center of the adsorption tank is provided with an output end switching component; The output end switching assembly includes a mounting column fixedly mounted on the adsorption tank, a switching slot connected to the exhaust gas input pipe is provided in the middle of the mounting column, a desorption input pipe is connected and installed at the other end of the switching slot, two blocking blocks are axially symmetrically installed inside the switching slot, a first rotating shaft is symmetrically rotated inside the switching slot, a baffle is fixedly installed on the first rotating shaft, an L-shaped arc plate is slidably connected to the mounting column, a sliding groove matching the L-shaped arc plate is provided on the mounting column, a spring is installed between the sliding groove and the L-shaped arc plate, partition plates are installed at both upper and lower ends of the mounting column, and a one-way ventilation groove is provided on the mounting column between the baffle and the L-shaped arc plate; The two baffles are connected to each other by transmission, a one-way blocking member, a delivery pipeline is provided on the inner wall of the adsorption tank, an activated carbon plate is installed on the upper end of the upper partition plate, a catalyst carrier plate is installed on the lower end of the lower partition plate, and an ultraviolet light tube is installed at the lower part of the adsorption tank; After the exhaust gas enters the switching tank, it enters the lower part of the adsorption tank from the one-way ventilation tank on the same side to react with the catalyst carrier plate. When the exhaust gas is continuously input into the lower part of the adsorption tank, the exhaust gas passing through the catalyst carrier plate will be squeezed through the inside of the conveying pipe and then conveyed upward, so that the initially adsorbed exhaust gas enters the lower side of the activated carbon plate at the upper part of the adsorption tank; A circular groove connected to the one-way ventilation groove is provided inside the partition plate, and circular holes connected to the circular groove are provided on the sides of the two partition plates away from each other, and the circular groove on the upper side is connected to the conveying pipeline.

2. A VOCs waste gas treatment device according to claim 1, characterized in that: The one-way blocking member includes a guide plate fixedly installed inside the switching slot, a slide plate is symmetrically slidably connected inside the guide plate, two slide plates extend out of the guide plate and abut against the baffle, and a first spring is fixedly installed on the slide plate.

3. A VOCs waste gas treatment device according to claim 1, characterized in that: The water blocking assembly includes a water blocking block matching the water outlet, an installation groove is provided inside the water blocking block, a second spring is installed on the lower side of the installation groove, a sealing block is sealingly and slidably connected to the lower end of the second spring, the sealing block is made of buoyancy material, one-way water inlet channels are provided on the left and right sides of the water blocking block, a connecting groove connected front and back is provided on the lower end of the sealing block, one-way water outlet channels connected to the connecting groove are provided on the front and back sides of the water blocking block, and a waterproof telescopic cylinder is installed on the lower end of the water blocking block.

4. A VOCs waste gas treatment device according to claim 3, characterized in that: The sealing block has inclined surfaces on the left and right sides.

5. A VOCs waste gas treatment device according to claim 4, characterized in that: A transmission shaft is rotatably installed inside the switching slot, a transmission plate matching the switching slot is installed on the side of the transmission shaft, a reduction assembly is installed on the output end of the transmission shaft, a rotating column is transmission-connected to the output end of the reduction assembly, and the catalyst carrier plate is installed on the peripheral side of the rotating column.

6. A VOCs waste gas treatment device according to claim 5, characterized in that: The reduction assembly includes a first gear fixedly mounted on the transmission shaft, the first gear is rotatably mounted on the mounting column, a gear ring is rotatably mounted on the lower partition plate, a second gear meshing with the gear ring and the first gear is rotatably mounted on the lower end of the mounting column, and a water-blocking plate is fixedly mounted between the lower end of the gear ring and the rotating column.

7. A VOCs waste gas treatment device according to claim 5, characterized in that: The catalyst carrier plate includes a spiral plate, which is fixedly mounted on a rotating column, a hollow groove is opened in the middle of the spiral plate, air holes are opened through the spiral plate, the hollow groove is filled with catalyst particles, and the ultraviolet light tube matches the spiral plate.

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