A dielectric barrier discharge deodorization waste gas purification system

Abstract

The present invention discloses a dielectric barrier discharge deodorization waste gas purification system, which comprises: a casing, on one side of which there is an air inlet, and a blower duct is fixedly sealed outside the air inlet; a uniform air cavity, horizontally distributed below the interior of the casing, and there is a vertically distributed inner channel on one side of the casing close to the air inlet, and the lower part of the inner channel is communicated with the uniform air cavity; purification chambers, which are multiple and circumferentially distributed; purification units, which are arranged in one-to-one correspondence with the respective purification chambers, the purification units are vertically installed in the respective purification chambers, and exhaust outer pipes are connected above the purification units; a main pipe, horizontally fixed above the casing, one end of the main pipe is connected with a blower, and the upper ends of the respective exhaust outer pipes are communicated with the main pipe; in the present invention, the purification unit adopts a plurality of radially adjustable and circumferentially distributed dielectric tubes, which is convenient for adjusting the discharge gap, so as to perform configuration optimization according to the actual waste gas treatment requirements and improve the purification effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of exhaust gas pollutant evacuation, and specifically relates to a dielectric barrier discharge deodorization exhaust gas purification system. Background Art

[0002] Dielectric barrier discharge is a form of non-equilibrium plasma discharge, which is widely used in fields such as air purification and exhaust gas treatment. Its working principle is to apply a high-frequency alternating voltage between two electrodes. When the voltage exceeds the breakdown threshold, tiny local discharge channels are generated in the gas gap between the dielectric surface and the electrode, forming a low-temperature plasma. This plasma contains a large number of high-energy electrons, active free radicals, excited molecules, etc., which can chemically react with the pollutants in the exhaust gas, thereby achieving decomposition and purification.

[0003] In the prior art, for example, in the invention patent with the publication number CN109731447A, multiple dielectric barrier tubes are arranged in the lower frame box body, and the outside of the dielectric barrier tubes is wrapped with a metal mesh high-voltage electrode. Therefore, when the exhaust gas passes through, it has a large discharge area, thus adapting to the purification of large-volume exhaust gas. However, in specific use, due to the fixed directions of the exhaust gas inlet and outlet, most of the dielectric barrier tubes at the air inlet are more likely to have pollutant deposition on their surfaces, reducing the discharge efficiency of the dielectric barrier tubes and directly affecting the overall exhaust gas purification effect. At the same time, the distance between each dielectric barrier tube cannot be adjusted, and it cannot adapt to the treatment of exhaust gas with different concentrations of pollution. Therefore, it is necessary to provide a dielectric barrier discharge deodorization exhaust gas purification system to solve the problems proposed in the above background art. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solution: A dielectric barrier discharge deodorization exhaust gas purification system, which includes:

[0005] A machine shell, on one side of which there is an air inlet, and a blower duct is hermetically fixed outside the air inlet. The blower duct sends industrial exhaust gas into the machine shell through the air inlet;

[0006] A uniform air cavity, horizontally distributed below the interior of the machine shell. There is a vertically distributed inner channel on one side of the machine shell near the air inlet, and the lower part of the inner channel is connected to the uniform air cavity;

[0007] A uniform air disk, rotatably connected above the interior of the uniform air cavity. A plurality of uniform air holes are opened in the uniform air disk;

[0008] Purification chambers, which are multiple and distributed in a circular pattern. Each purification chamber is vertically arranged in the machine shell and is located above the uniform air cavity;

[0009] Purification units, which are provided in one-to-one correspondence with the respective purification bins. The purification units are vertically installed in the respective purification bins, and exhaust outer pipes are connected above each of the purification units;

[0010] Main pipe, horizontally fixed above the casing. One end of the main pipe is connected to a blower, the upper ends of the respective exhaust outer pipes are communicated with the main pipe, and the other end of the main pipe is hermetically communicated with an outer collection bin;

[0011] The purification unit includes:

[0012] An upper disc seat and a lower disc seat, which are distributed vertically with the same center. A high-voltage electrode is fixedly centered between the upper disc seat and the lower disc seat, and the high-voltage electrode is externally connected to a high-voltage power supply;

[0013] Dielectric tubes, circumferentially distributed around the high-voltage electrode. The upper and lower ends of each dielectric tube are respectively connected to the upper disc seat and the lower disc seat;

[0014] An upper exhaust seat, fixed above the upper disc seat. The upper exhaust seat is connected to the upper ends of the respective dielectric tubes. An air hole is provided on one side of the upper exhaust seat, and the exhaust outer pipe is hermetically connected to the air hole;

[0015] Soft electrodes are arranged in each of the dielectric tubes. The soft electrodes are externally connected to a control power supply, and the dielectric tubes are all arranged to be radially slidably adjusted below the upper disc seat so that each purification unit can flexibly adjust the discharge based on the industrial waste gas pollution concentration.

[0016] Further, as a preference, the dielectric tube includes a connecting shaft. There are two connecting shafts symmetrically distributed up and down. An inner tube is coaxially arranged between the two connecting shafts. The two ends of the inner tube are respectively fixed to the connecting shafts. A filter tube is slidably connected to the outside of the inner tube, and compression springs are arranged between the filter tube and the upper and lower connecting shafts;

[0017] The center of the soft electrode is connected between the connecting shafts, and a dielectric layer is arranged outside the soft electrode;

[0018] A fiber woven bag is sleeved outside the filter tube.

[0019] Further, as a preference, a rotating shaft tube rotates in the center of the upper disc seat, and an annular cavity is provided in the upper disc seat. The rotating shaft tube is hermetically connected in the annular cavity, and a plurality of through holes are provided on the side wall of the rotating shaft tube;

[0020] A plurality of straight guide grooves extending radially are provided on the circumferential lower end surface of the upper disc seat. A joint tube is slidably connected in the straight guide grooves, and the lower ends of the joint tubes are hermetically and rotatably connected to the dielectric tubes;

[0021] Below the ring cavity, there are multiple conduction ports distributed. Each of the section pipes is respectively connected to the corresponding conduction port through a corrugated pipe. A central pipe is vertically connected inside the upper exhaust seat. The lower end of the central pipe is communicated with the rotating shaft pipe, and there are multiple side holes on the side wall of the central pipe;

[0022] Below the upper disc seat, there is a shaft disc rotatably connected. The shaft disc is fixed to the rotating shaft pipe, and there are several inclined guide holes distributed on the shaft disc. The section pipes are all inserted into the inclined guide holes, and the cross-section of the inclined guide holes is in an arc structure.

[0023] Further, as a preference, a gear is sleeved on the central pipe, and a straight tooth plate is slidably connected to the upper disc seat. The straight tooth plate is meshed and driven with the gear. A propulsion cylinder is connected to the upper disc seat, and one end of the propulsion cylinder is connected to the straight tooth plate;

[0024] During the telescopic propulsion process of the propulsion cylinder, the central pipe is driven to rotate through the straight tooth plate. During the synchronous rotation of the shaft disc and the central pipe, each medium pipe is pushed to slide along the straight guide groove through the inclined guide holes.

[0025] Further, as a preference, straight guide grooves corresponding to the upper disc seat are opened in the lower disc seat. A positioning shaft is slidably connected in the straight guide grooves. A runner is rotatably connected to the center above the positioning shaft. The lower end of the medium pipe is connected to the runner;

[0026] A driving wheel is rotatably connected to the center in the lower disc seat. The driving wheel is connected and driven to each runner through multiple transmission belts.

[0027] Further, as a preference, multiple positioning plates are fixed in the lower disc seat. A moving plate is slidably connected to each positioning plate. A tensioning wheel is rotatably installed on each moving plate. The tensioning wheels are all in contact with the transmission belt;

[0028] A top support spring is arranged between the moving plate and the positioning plate. Under the action of the elastic force, the tensioning wheel on the moving plate always provides a tensioning effect on the transmission belt.

[0029] Further, as a preference, a piston is slidably and sealingly arranged in the connecting shaft located below in the medium pipe. The upper end of the piston is fixed to the filter pipe in the medium pipe through a support rod. An air hole is opened at the lower end of the connecting shaft, and an air pipe is vertically inserted into the positioning shaft. One end of the air pipe is hermetically communicated with the connecting shaft through the air hole.

[0030] Further, as a preference, several fixing holes are distributed on the inner pipe in the medium pipe, and the arrangement spacing of the fixing holes above the middle of the inner pipe is twice that of the fixing holes below the middle of it;

[0031] Above the middle of the filter tube in the medium tube, there are several filter holes distributed. During the up-and-down sliding adjustment of the filter tube, different filter holes are respectively docked with the fixed holes.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0033] In the present invention, industrial waste gas can enter the air distribution cavity in the casing and uniformly flow into each purification chamber when passing through the air distribution plate in the air distribution cavity, so as to ensure the efficient treatment of industrial waste gas by the purification unit. Among them, the purification unit adopts a plurality of medium tubes distributed in a circle, and each medium tube slides and adjusts radially along the upper disc seat to change the distance between the medium tube and the high-voltage electrode, so as to optimize the configuration according to the actual waste gas treatment requirements and improve the purification effect. Among them, a soft electrode is arranged in each medium tube to further ensure the uniformity and stability of the internal discharge of the medium tube, so as to form a more uniform plasma region and improve the purification effect. Description of the Drawings

[0034] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 is a schematic diagram of the structure of the purification unit in the present invention;

[0036] Figure 3 is a schematic diagram of the structural distribution of the soft electrode and the high-voltage electrode in the present invention;

[0037] Figure 4 is a partial upper-end structure schematic diagram of the medium tube in the present invention;

[0038] Figure 5 is a schematic diagram of the structure of the upper disc seat in the present invention;

[0039] Figure 6 is a schematic diagram of the structure of the shaft disc in the present invention;

[0040] Figure 7 is a schematic diagram of the structure of the straight tooth plate and the propulsion cylinder in the present invention;

[0041] Figure 8 is a schematic diagram of the internal structure of the lower disc seat in the present invention;

[0042] Figure 9 is a partial lower-end structure schematic diagram of the medium tube in the present invention;

[0043] In the figure: 1. Machine housing; 11. Air supply duct; 12. Exhaust outer pipe; 13. Inner channel; 14. Purification chamber; 15. Main pipe; 2. Air distribution chamber; 21. Air distribution plate; 3. Purification unit; 31. High-voltage electrode; 32. Upper exhaust seat; 33. Air holes; 34. Central pipe; 35. Gear; 36. Straight tooth plate; 37. Propulsion cylinder; 4. Upper disc seat; 41. Rotating shaft pipe; 42. Annular cavity; 43. Straight guide groove; 44. Section pipe; 45. Bellows; 46. Axial disc; 47. Oblique guide hole; 5. Lower disc seat; 51. Runner; 52. Driving wheel; 53. Positioning plate; 54. Tensioning wheel; 55. Positioning shaft; 56. Air pipe; 57. Air holes; 6. Medium pipe; 61. Soft electrode; 62. Connecting shaft; 63. Inner pipe; 64. Filter pipe; 65. Medium layer; 66. Piston. Detailed implementation mode

[0044] Please refer to Figures 1-9 , in the embodiment of the present invention, a dielectric barrier discharge deodorization waste gas purification system includes:

[0045] Machine housing 1, on one side of which there is an air inlet, and an air supply duct 11 is fixedly sealed outside the air inlet. The air supply duct sends industrial waste gas into the machine housing 1 through the air inlet;

[0046] Air distribution chamber 2, horizontally distributed below the interior of the machine housing 1. On one side of the machine housing 1 close to the air inlet, there is a vertically distributed inner channel 13, and the lower part of the inner channel 13 is connected to the air distribution chamber 2;

[0047] Air distribution plate 21, rotatably connected above the interior of the air distribution chamber 2, and a plurality of air distribution holes are opened in the air distribution plate 21;

[0048] Purification chambers 14, a plurality of which are circumferentially distributed. Each purification chamber 14 is vertically arranged in the machine housing 1 and is located above the air distribution chamber 2; when the industrial waste gas flows upward through each air distribution hole, it can evenly flow into each purification chamber 14, so as to ensure the consistency of industrial waste gas treatment in each purification chamber 14 and improve the waste gas purification effect;

[0049] Purification units 3, which are arranged in one-to-one correspondence with each purification chamber 14. The purification units 3 are vertically installed in each purification chamber 14, and exhaust outer pipes 12 are connected above each purification unit 3; the industrial waste gas can flow out through the exhaust outer pipes 12;

[0050] Main pipe 15, horizontally fixed above the machine housing 1. One end of the main pipe 15 is connected to a blower, the upper ends of each exhaust outer pipe 12 are connected to the main pipe 15, and the other end of the main pipe 15 is hermetically connected to an external collection chamber (not shown in the figure);

[0051] The purification unit 3 includes:

[0052] The upper disc base 4 and the lower disc base 5 are vertically distributed concentrically. A high-voltage electrode 31 is fixedly centered between the upper disc base 4 and the lower disc base 5, and the high-voltage electrode 31 is externally connected to a high-voltage power supply;

[0053] The dielectric tubes 6 are circumferentially distributed around the high-voltage electrode 31. The upper and lower ends of each dielectric tube 6 are respectively connected to the upper disc base 4 and the lower disc base 5; a discharge gap is formed between the dielectric tube 6 and the high-voltage electrode 31. When a high voltage is applied to the high-voltage electrode 31, a strong electric field will be generated in the discharge gap between the dielectric tube 6 and the high-voltage electrode 31, causing air or gas molecules to ionize, forming a plasma region. The high-energy electrons, free radicals and other active particles in the plasma can react with the pollutants in the waste gas and decompose them into harmless substances. For example, organic compounds can be oxidized into carbon dioxide and water.

[0054] The upper exhaust air base 32 is fixed above the upper disc base 4. The upper exhaust air base 32 is connected to the upper ends of each dielectric tube 6. A ventilation hole 33 is opened on one side of the upper exhaust air base 32, and the exhaust outer tube 12 is hermetically connected to the ventilation hole 33;

[0055] Soft electrodes 61 are arranged in each dielectric tube 6, and the soft electrodes 61 are externally connected to a control power supply. When industrial waste gas is guided around the soft electrodes 61, it can be more evenly distributed near the soft electrodes 61, and the industrial waste gas is further purified and decomposed in the dielectric tube 6, enhancing the reliability and robustness of the system; and the dielectric tubes 6 are all arranged under the upper disc base 4 in a radially slidable and adjustable manner, so that each purification unit 3 can flexibly adjust the discharge based on the industrial waste gas pollution concentration. Among them, a smaller distance between the dielectric tube 6 and the high-voltage electrode 31 can increase the discharge intensity and is suitable for high-concentration pollutants; while a larger distance between the dielectric tube 6 and the high-voltage electrode 31 is suitable for the treatment scenario of lower-concentration industrial waste gas.

[0056] In this embodiment, the dielectric tube 6 includes connecting shafts 62. There are two connecting shafts 62 that are symmetrically distributed up and down. An inner tube 63 is coaxially arranged between the two connecting shafts 62. The two ends of the inner tube 63 are respectively fixed to the connecting shafts 62. A filter tube 64 is slidably connected outside the inner tube 63, and compression springs are arranged between the filter tube 64 and the upper and lower connecting shafts 62;

[0057] The center of the soft electrode 61 is connected between the connecting shafts 62, and a dielectric layer 65 is arranged outside the soft electrode 61;

[0058] A fiber woven bag is sleeved outside the filter tube 64. After the industrial waste gas passes through the discharge gap between the dielectric tube 6 and the high-voltage electrode 31 (during this process, the particulate matter and larger molecular pollutants in the waste gas start to be preliminarily ionized under the action of the strong electric field), it can enter the dielectric tube 6 through the fiber woven bag outside the filter tube 64 (preliminary filtration is carried out through the fiber woven bag outside the filter tube 64, and the fiber woven bag can effectively intercept larger particulate matter and some harmful substances to ensure that the waste gas entering the dielectric tube 6 is purer). The soft electrode 61 used inside the dielectric tube 6 helps to form a more uniform plasma region, improve the purification effect, and promote the effective adsorption and decomposition of pollutants.

[0059] As a preferred embodiment, a rotating shaft tube 41 rotates in the center of the upper disc seat 4, and an annular cavity 42 is provided in the upper disc seat 4. The rotating shaft tube 41 is hermetically connected in the annular cavity 42, and a plurality of through holes are provided on the side wall of the rotating shaft tube 41;

[0060] A plurality of straight guide grooves 43 extending radially are provided on the circumferential surface of the lower end face of the upper disc seat 4. A joint tube 44 is slidably connected in the straight guide groove 43, and the lower ends of the joint tubes 44 are hermetically and rotatably connected to the dielectric tube 6;

[0061] A plurality of conduction ports are distributed below the annular cavity 42. Each joint tube 44 is correspondingly connected to the conduction port through a corrugated tube 45, so that the industrial waste gas in each dielectric tube 6 can enter the annular cavity 42 through the joint tube 44, and then enter the rotating shaft tube 41 through the through holes on the rotating shaft tube 41; A central tube 34 is vertically connected in the upper exhaust seat 32, and the lower end of the central tube 34 is connected to the rotating shaft tube 41. A plurality of side holes are provided on the side wall of the central tube 34; The industrial waste gas entering the rotating shaft tube 41 can flow into the upper exhaust seat 32 through the central tube 34, and then be discharged through the air holes 33 on the upper exhaust seat 32;

[0062] A shaft disc 46 is rotatably connected below the upper disc seat 4. The shaft disc 46 is fixed to the rotating shaft tube 41, and a plurality of inclined guide holes 47 are distributed on the shaft disc 46. The joint tubes 44 are all inserted into the inclined guide holes 47, and the cross section of the inclined guide holes 47 is in an arc structure.

[0063] In this embodiment, a gear 35 is sleeved on the central tube 34, and a straight tooth plate 36 is slidably connected to the upper disc seat 4. The straight tooth plate 36 is meshed with the gear 35 for transmission. A propulsion cylinder 37 is connected to the upper disc seat 4, and one end of the propulsion cylinder 37 is connected to the straight tooth plate 36;

[0064] During the telescopic propulsion process of the propulsion cylinder 37, the central tube 34 is driven to rotate by the straight tooth plate 36. During the synchronous rotation of the shaft disc 46 and the central tube 34, the medium tubes 6 are pushed to slide along the straight guide grooves 43 through the inclined guide holes 47, so as to effectively adjust the distribution distance between the medium tubes 6 and the high-voltage electrode 31.

[0065] In this embodiment, straight guide grooves corresponding to the upper disc seat 4 are provided in the lower disc seat 5. A positioning shaft 55 is slidably connected in the straight guide grooves. A runner 51 is rotatably connected to the center above the positioning shaft 55. The lower end of the medium tube 6 is connected to the runner 51.

[0066] A driving wheel 52 is rotatably connected to the center in the lower disc seat 5. The driving wheel 52 is connected and driven to each runner 51 through a plurality of transmission belts, so that the medium tubes 6 continuously rotate under the driving action of the driving wheel 52 during the industrial waste gas purification treatment, ensuring that the industrial waste gas fully flows through the circumferential side walls of the medium tubes 6, and avoiding the problems of local overload or insufficient treatment of the medium tubes 6, resulting in local pollutant accumulation.

[0067] In this embodiment, a plurality of positioning plates 53 are fixed in the lower disc seat 5. Moving plates are slidably connected to each of the positioning plates 53. Tension wheels 54 are rotatably installed on each of the moving plates. The tension wheels 54 are all in abutting contact with the transmission belts.

[0068] A top support spring is arranged between the moving plate and the positioning plate 53. Under the action of elastic force, the tension wheels 54 on the moving plate always provide a tensioning effect on the transmission belts.

[0069] As a preferred embodiment, a piston 66 is slidably and sealingly arranged in the connecting shaft 62 located below in the medium tube 6. The upper end of the piston 66 is fixed to the filter tube 64 in the medium tube 6 through a support rod. An air hole 57 is opened at the lower end of the connecting shaft 62, and an air pipe 56 is vertically inserted through the positioning shaft 55. One end of the air pipe 56 is sealingly communicated with the connecting shaft 62 through the air hole 57, so as to axially displace and adjust the filter tube 64 by the piston 66 through the airflow adjustment effect.

[0070] In this embodiment, a number of fixing holes are distributed on the inner tube 63 in the medium tube 6, and the arrangement spacing of the fixing holes above the middle of the inner tube 63 is twice that of the fixing holes below the middle of it.

[0071] A number of filter holes are distributed above the middle of the filter tube 64 in the medium tube 6. During the up-and-down sliding adjustment of the filter tube 64, different filter holes are respectively docked with the fixed holes. It should be noted that the lower end of the middle part of the filter tube 64 adopts a mesh tube structure, while the upper end of the middle part of the filter tube 64 adopts a porous tube structure, so that the lower end of the filter tube 64 is always docked with the fixed hole of the medium tube 6 during the axial adjustment of the filter tube 64, and the upper end of the filter tube 64 is respectively docked with each fixed hole at different axial displacements. On the one hand, it can effectively control the ventilation path between different medium tubes 6, which avoids the decline of the purification effect caused by excessive load on a certain medium tube 6; on the other hand, it can effectively change the ventilation efficiency of the industrial waste gas in each medium tube 6 and dynamically adjust according to the changes in the waste gas composition and treatment requirements, ensuring the flexibility and adaptability of the system.

[0072] The above-mentioned is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A dielectric barrier discharge deodorization waste gas purification system, characterized in that: Comprising: A casing, with an air inlet opened on one side, and an air supply duct is fixedly sealed outside the air inlet; An air distribution cavity, horizontally distributed below the interior of the casing. On one side of the casing near the air inlet, there is a vertically distributed inner channel, and the lower part of the inner channel is connected to the air distribution cavity; An air equalizing disc, rotatably connected above the interior of the air distribution cavity, and a plurality of air equalizing holes are opened in the air equalizing disc; Purification bins, a plurality of which are circumferentially distributed. Each purification bin is vertically arranged in the casing and located above the air distribution cavity; Purification units, arranged in one-to-one correspondence with each purification bin. The purification units are vertically installed in each purification bin, and exhaust air outer pipes are connected above each purification unit; A main pipe, horizontally fixed above the casing. One end of the main pipe is connected to an air blower, the upper ends of each exhaust air outer pipe are connected to the main pipe, and the other end of the main pipe is hermetically connected to an external collection bin; The purification unit includes: An upper disc seat and a lower disc seat, vertically distributed concentrically. A high-voltage electrode is fixedly centered between the upper disc seat and the lower disc seat, and the high-voltage electrode is externally connected to a high-voltage power supply; Dielectric tubes, circumferentially distributed around the high-voltage electrode. The upper and lower ends of each dielectric tube are respectively connected to the upper disc seat and the lower disc seat; An upper exhaust air seat, fixed above the upper disc seat. The upper exhaust air seat is connected to the upper ends of each dielectric tube, and an air hole is opened on one side of the upper exhaust air seat. The exhaust air outer pipe is hermetically connected to the air hole; A soft electrode is arranged inside the dielectric tube, the soft electrode is externally connected to a control power supply, and the dielectric tube is arranged below the upper disc seat in a radially slidable and adjustable manner; A rotating shaft tube rotates in the center of the upper disc seat. There is an annular cavity in the upper disc seat, the rotating shaft tube is hermetically connected in the annular cavity, and a plurality of through holes are opened on the side wall of the rotating shaft tube; A plurality of straight guide grooves extending radially are opened on the circumferential end face of the lower end of the upper disc seat. A joint tube is slidably connected in the straight guide grooves, and the lower ends of the joint tubes are hermetically and rotatably connected to the dielectric tubes; A plurality of conduction ports are distributed below the annular cavity. Each joint tube is respectively connected to the corresponding conduction port through a corrugated pipe. A central tube is vertically connected in the upper exhaust air seat, the lower end of the central tube is connected to the rotating shaft tube, and a plurality of side holes are arranged on the side wall of the central tube; Straight guide grooves corresponding to the upper disc seat are opened in the lower disc seat. A positioning shaft is slidably connected in the straight guide grooves, a rotating wheel is rotatably connected to the center above the positioning shaft, and the lower end of the dielectric tube is connected to the rotating wheel; A driving wheel is rotatably connected to the center of the lower disc seat, and the driving wheel is connected and driven to each rotating wheel through a plurality of transmission belts; The dielectric tube includes a connecting shaft, and there are two connecting shafts symmetrically distributed up and down. An inner tube is coaxially arranged between the two connecting shafts, and the two ends of the inner tube are respectively fixed to the connecting shafts. A filter tube is slidably connected outside the inner tube, and compression springs are arranged between the filter tube and the upper and lower connecting shafts; The center of the soft electrode is connected between the connecting shafts, and a dielectric layer is arranged outside the soft electrode; A fiber woven bag is sleeved outside the filter tube.

2. A dielectric barrier discharge deodorization waste gas purification system according to claim 1, characterized in that: A shaft disc is rotatably connected below the upper disc seat. The shaft disc is fixed to the rotating shaft tube, and a plurality of inclined guide holes are distributed on the shaft disc. The joint tubes are all inserted through the inclined guide holes, and the cross section of the inclined guide holes is in an arc structure.

3. A dielectric barrier discharge deodorization waste gas purification system according to claim 2, characterized in that: A gear is sleeved on the central tube, and a straight tooth plate is slidably connected to the upper disc seat. The straight tooth plate is meshed and driven with the gear, and a propulsion cylinder is connected to the upper disc seat. One end of the propulsion cylinder is connected to the straight tooth plate; During the telescopic propulsion process of the propulsion cylinder, the central tube is driven to rotate through the straight tooth plate, and the shaft disc rotates synchronously with the central tube. Through the inclined guide holes, each medium tube is pushed to slide along the straight guide groove.

4. A dielectric barrier discharge deodorization waste gas purification system according to claim 1, characterized in that: A plurality of positioning plates are fixed in the lower disc seat. A movable plate is slidably connected to each positioning plate. A tension wheel is rotatably installed on each movable plate, and the tension wheels are in abutting contact with the transmission belt. A top support spring is arranged between the movable plate and the positioning plate. Under the action of elastic force, the top support spring drives the tension wheels on the movable plate to always provide a tensioning effect on the transmission belt.

5. A dielectric barrier discharge deodorization waste gas purification system according to claim 1, characterized in that: A piston is slidably and sealingly arranged in the connecting shaft located at the lower part of the medium tube. The upper end of the piston is fixed to the filter tube in the medium tube through a support rod. An air hole is opened at the lower end of the connecting shaft, and a trachea is vertically inserted into the positioning shaft. One end of the trachea is sealingly communicated with the connecting shaft through the air hole.

6. A dielectric barrier discharge deodorization waste gas purification system according to claim 5, characterized in that: A number of fixing holes are distributed on the inner tube in the medium tube, and the arrangement spacing of the fixing holes above the middle of the inner tube is twice that of the fixing holes below the middle of the inner tube. A number of filter holes are distributed above the middle of the filter tube in the medium tube. During the up and down sliding adjustment of the filter tube, different filter holes are respectively docked with the fixing holes.

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