Exhaust gas treatment device based on synergistic effect of low-temperature plasma and catalyst

Abstract

This invention relates to the technical field of atmospheric control and air treatment, and discloses a waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst. The device includes a waste gas treatment unit, which sequentially passes waste gas through a plasma ionization zone and a catalytic zone. The plasma ionization zone ionizes the waste gas, while the catalytic zone further oxidizes or decomposes any incompletely degraded intermediate products after passing through the plasma zone. An outlet end is provided on the waste gas treatment unit, and an outlet unit is located at the outlet end. A film-breaking unit, during the waste gas treatment process, drives a permanent magnet ball to rotate, causing the permanent magnet ball to intermittently approach or move away from a spring, thus causing the spring to vibrate and preventing the formation of a gas film on the inner wall of the inlet end, thereby avoiding changes in the inlet end pipe diameter.

Description

Technical Field

[0001] This invention relates to the technical field of atmospheric control and air treatment, specifically to a waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst. Background Technology

[0002] Low-temperature plasma waste gas treatment technology utilizes high-voltage discharge to generate high-energy electrons and free radicals, which break down VOCs, odorous and harmful gas molecules in waste gas at room temperature, converting them into harmless substances such as carbon dioxide and water. It features rapid reaction, low energy consumption, and wide applicability, and is commonly used for the purification and treatment of low-concentration organic waste gas and odors.

[0003] For example, Chinese patent application CN203816479U discloses a low-temperature plasma exhaust gas treatment device, which includes a housing. The bottom of the side wall of the housing is provided with a detachable liquid collection tank. The bottom of the housing is provided with an air inlet and the top of the housing is provided with an air outlet. The air inlet and the air outlet are connected by a duct. The duct is provided with a first high-pressure flushing device, a low-temperature plasma module, an activated carbon filter, a second high-pressure flushing device, and a baffle plate arranged from top to bottom.

[0004] However, existing low-temperature plasma exhaust gas treatment devices still have some problems. Near the inner wall of the inlet pipe, the airflow is affected by the viscous resistance of the wall, forming a slow-flowing boundary layer with weak airflow disturbance. Gas molecules easily accumulate on the wall and form a continuous and stable gas film. At the same time, water vapor, condensate, and charged particles generated by plasma in the exhaust gas continuously adhere to the inner wall of the inlet under adsorption and electrostatic effects, forming a gas film that is not easy to dissipate on its own together with the boundary layer gas. After the gas film is formed, a stable coating layer is formed on the inner wall of the inlet, making it easier for dust and charged particles in the exhaust gas to adhere and deposit on the pipe wall. Long-term accumulation will cause local narrowing of the pipe diameter, increase the airflow resistance, and affect the uniformity of air intake. At the same time, the gas film will block the transmission of disturbance between the airflow and the pipe wall, reducing the efficiency of subsequent plasma ionization and catalytic reaction. When the attached pollutant film layer falls off, it may also enter the ionization zone with the airflow, causing electrode contamination or internal blockage of the equipment.

[0005] Therefore, ensuring that the exhaust gas can smoothly enter the low-temperature plasma exhaust gas treatment process is a problem that needs to be solved. Summary of the Invention

[0006] This invention provides a waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst to solve the above-mentioned problems existing in the prior art.

[0007] A waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst includes:

[0008] The waste gas treatment device passes the waste gas sequentially through a plasma ionization zone and a catalytic zone. The waste gas is ionized by the plasma ionization zone, and the intermediate products that are not completely degraded after passing through the plasma zone are oxidized or decomposed by the catalytic zone.

[0009] An outlet end is provided on the waste gas treatment device, and an outlet unit is located on the outlet end;

[0010] An air inlet end, connected to the exhaust gas treatment device, and a membrane breaking unit located on the air inlet end;

[0011] Springs are evenly distributed in the upper half of the air intake end and located on the inner wall of the air intake end;

[0012] The membrane breaking unit includes a movable component that is detachably installed on the air inlet end, and a membrane breaking component connected to the movable component;

[0013] The membrane-breaking assembly is used to attract the spring sheet, enabling the spring sheet to vibrate;

[0014] One end of the spring is fixed to the air inlet, and the other end is a free end that extends towards the exhaust gas. A gap is reserved between the spring and the inner wall of the air inlet.

[0015] Furthermore, the moving component includes a mounting rod inserted into the exhaust gas treatment device, a forward seat slidably connected to the mounting rod, a fixed seat disposed on the mounting rod, a rotary motor located in the fixed seat, an adjustment part connected to the output end of the rotary motor, and an execution part abutting against the adjustment part and connected to the mounting rod.

[0016] Furthermore, the adjustment unit includes a cam sleeved on the output end of the rotary motor, two drive wheels that circumferentially abut against the cam, and a third swing arm connected to the drive wheels;

[0017] The third swing arm is movably connected to the actuator;

[0018] The cam includes a first circular profile and a second circular profile, the radius of the second circular profile being smaller than the radius of the first circular profile; the first circular profile and the second circular profile are concentrically arranged and connected by at least one smooth transition curve to form a continuous closed non-circular profile.

[0019] The outer peripheral surface of the non-circular contour includes a protruding section extending from the first circular contour and a concave section extending from the second circular contour, which are used to achieve periodic contact and gap changes during rotation; by moving the drive wheel on the outer peripheral surface of the first circular contour, the forward seat moves on the mounting rod without driving the actuator.

[0020] Furthermore, the actuator includes a first swing arm disposed at the output end of the rotary motor, a second swing arm for connecting the first swing arm and the forward seat, a drive shaft disposed on the third swing arm, and a clamping arm connected to the drive shaft and disposed on the mounting rod.

[0021] A reset torsion spring is provided between the clamping arm and the mounting rod.

[0022] Furthermore, the membrane breaking assembly includes a mounting bracket fixedly connected to the forward seat, and at least three membrane breaking structures disposed on the mounting bracket;

[0023] Three membrane-breaking structures form an inverted U-shaped area, which is positioned at the air intake end;

[0024] One of the membrane-breaking structures is perpendicular to the length of the other two membrane-breaking structures, forming the top of the inverted U-shaped region;

[0025] The membrane-breaking structure is used to attract the spring sheet on the air intake end, and as the moving component works, the position of the membrane-breaking structure in the axial direction of the air intake end changes, thereby changing the magnitude of the magnetic force, changing the vibration amplitude of the spring sheet, and breaking the air film on the inner wall of the air intake end.

[0026] Furthermore, the membrane breaking structure includes at least two pillars disposed on the mounting frame, a mounting block sleeved on the pillars, a pushing part disposed on one of the mounting blocks, and a rotating part connected to the other mounting block;

[0027] The propulsion part abuts against the rotating part.

[0028] Furthermore, the propulsion unit includes a connecting seat disposed on the mounting block, a delivery pipe connected to the connecting seat, an air pump connected to one end of the delivery pipe, a propulsion member located in the connecting seat, a propulsion rod connected to the propulsion member, a shift fork disposed on the propulsion rod, and a propulsion seat abutting against the shift fork;

[0029] The shift fork is U-shaped, and the push seat has an annular groove around its circumference for placing the shift fork.

[0030] The connecting seat is provided with a T-shaped chamber;

[0031] The connecting seat includes a limiting frame disposed in the T-shaped chamber, an adjusting rod passing through the limiting frame, a sealing piston connected to one end of the adjusting rod, a support seat sleeved on the adjusting rod, and a return spring for connecting the support seat and the limiting frame.

[0032] The adjusting rod is connected to the push rod.

[0033] Furthermore, the rotating part includes a rotating motor fixedly mounted on the mounting block, a rotating shaft for connecting the two mounting blocks and disposed at the output end of the rotating motor, a limiting seat and a fixing frame respectively disposed on the rotating shaft, a connecting rod movably connected to the fixing frame, and a permanent magnet ball disposed on the connecting rod; the propulsion seat is sleeved on the rotating shaft;

[0034] The connecting rod is L-shaped, with its shorter end abutting against the propulsion seat.

[0035] Furthermore, the air outlet unit includes a variable diameter pipe connected to the air outlet end, a tapered pipe located at the center of the variable diameter pipe, and a flow divider plate sleeved on the tapered pipe and connected to the inner wall of the variable diameter pipe.

[0036] The reducing tube and the tapered tube are arranged in an intersecting manner, with the end face of the tapered tube having the largest diameter being closer to the end face of the reducing tube having the smallest diameter relative to the end face of the tapered tube having the smallest diameter.

[0037] The inner wall of the tapered tube is coated with an antistatic and wear-resistant coating.

[0038] The flow divider plate is provided with multiple air outlets, and a gas space is formed between the flow divider plate, the inner wall of the variable diameter pipe and the outer wall of the tapered pipe. The gas space is connected to the gas input pump through a pipe.

[0039] Furthermore, the air outlet unit also includes a sealing assembly disposed on the variable diameter pipe. The sealing assembly includes a locking motor disposed on the variable diameter pipe, a plurality of flip plates movably disposed on the variable diameter pipe, and a transfer frame disposed between adjacent flip plates.

[0040] The locking motor is connected to one of the flip plates.

[0041] Beneficial Effects: This invention discloses a waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst. In order to ensure that the waste gas can smoothly enter the low-temperature plasma waste gas treatment process, the device is equipped with a film-breaking unit. Through the film-breaking unit, during the waste gas treatment process, it can drive the permanent magnet ball to rotate, so that the permanent magnet ball can intermittently approach or move away from the spring, thereby causing the spring to vibrate and preventing the formation of a gas film on the inner wall of the air inlet, thus causing a change in the diameter of the air inlet pipe. At the same time, during this process, the position of the permanent magnet ball in the axial direction of the air inlet and the shortest distance between it and the axial tangent of the air inlet can also be adjusted, thereby changing the vibration frequency of the spring and better breaking the gas film on the inner wall of the air inlet. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst of the present invention;

[0043] Figure 2 This is a schematic diagram of the moving component structure of the present invention;

[0044] Figure 3 This is a schematic diagram of the cam structure of the present invention;

[0045] Figure 4 This is a schematic diagram of the membrane breaking component structure of the present invention;

[0046] Figure 5 This is a schematic diagram of the rotating part structure of the present invention;

[0047] Figure 6 This is a schematic diagram of the propulsion section structure of the present invention;

[0048] Figure 7 This is a schematic diagram of the fixing frame structure of the present invention;

[0049] Figure 8 This is a schematic diagram of the connector structure of the present invention;

[0050] Figure 9 This is a schematic diagram of the air outlet unit structure of the present invention;

[0051] Figure 10 This is a schematic diagram of the sealing assembly structure of the present invention.

[0052] Reference numerals: 1. Exhaust gas treatment device; 2. Exhaust end; 3. Exhaust unit; 31. Reducer; 32. Conical tube; 33. Diverter plate; 34. Locking motor; 35. Transfer frame; 36. Tilting plate; 4. Inlet; 5. Film breaking unit; 51. Moving component; 511. Mounting rod; 512. Fixed seat; 513. Rotary motor; 514. Adjustment part; 515. Drive shaft; 516. Clamping arm; 517. First swing arm; 518. Second swing arm; 519. Forward seat; 5110. Cam; 5111. Drive wheel; 5112. Third swing arm; 52. Membrane breaking assembly; 521. Mounting bracket; 522. Support column; 523. Mounting block; 524. Propulsion unit; 5241. Conveying pipe; 5242. Connecting seat; 5243. Propulsion rod; 5244. Fork; 5245. Propulsion seat; 5246. Sealing piston; 5247. Limiting bracket; 5248. Return spring; 5249. Support seat; 52410. Adjusting rod; 525. Rotating part; 5251. Rotating motor; 5252. Rotating shaft; 5253. Limiting seat; 5254. Fixing bracket; 5255. Connecting rod; 5256. Permanent magnet ball. Detailed Implementation

[0053] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0054] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0055] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0056] This invention discloses a waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst, with reference to... Figures 1-10 ,include:

[0057] The waste gas treatment device 1 passes the waste gas sequentially through a plasma ionization zone and a catalytic zone. The plasma ionization zone ionizes the waste gas, while the catalytic zone further oxidizes or decomposes any intermediate products that are not completely degraded after passing through the plasma zone. The device includes an outlet end 2, an outlet unit 3, and an inlet end 4 connected to the waste gas treatment device 1. A membrane breaking unit 5 is located on the inlet end 4. A spring is evenly distributed in the upper half of the inlet end 4 and located on its inner wall. The membrane breaking unit 5 includes a movable component 51 detachably mounted on the inlet end 4 and a membrane breaking component 52 connected to the movable component 51. The membrane breaking component 52 attracts the spring, causing it to vibrate. One end of the spring is fixed to the inlet end 4, and the other end is free and extends towards the waste gas. A gap is provided between the spring and the inner wall of the inlet end 4.

[0058] After the exhaust gas enters the device through the inlet end 4, it first passes through the membrane breaking unit 5 of the inlet end 4 in cooperation with the spring sheet to break the gas film on the inner wall of the inlet, ensuring that the exhaust gas enters the exhaust gas treatment device 1 evenly. After entering, the exhaust gas flows through the plasma ionization zone and the catalytic zone in sequence. The plasma ionization zone ionizes the exhaust gas to generate active species, which initially degrades the pollutants in the exhaust gas. The catalytic zone further oxidizes or decomposes the intermediate products that are not completely degraded after ionization, so as to achieve deep treatment of pollutants. The treated clean gas is stably discharged through the outlet unit 3 of the outlet end 2.

[0059] The synergistic effect of plasma and catalyst makes up for the shortcomings of single plasma degradation efficiency and easy generation of by-products, while reducing the energy consumption of single catalytic reaction and significantly improving the degradation efficiency of waste gas. It can improve the degradation efficiency of pollutants such as VOCs to a higher level and avoid secondary pollution.

[0060] Meanwhile, the four-film-breaking structure at the air inlet end, in conjunction with the spring sheet, solves the problem of uneven waste gas distribution caused by the gas film on the inner wall of the air inlet during waste gas transportation, ensuring that the waste gas is in full contact with the plasma and catalyst, further improving the degradation effect; and the gap reserved between the spring sheet and the inner wall of the air inlet end 4 not only ensures the effectiveness of the spring sheet vibration in breaking the gas film, but also avoids the wear caused by the friction between the spring sheet and the inner wall, extending the service life of the component.

[0061] The moving component 51 includes a mounting rod 511 inserted into the exhaust gas treatment device 1, a forward seat 519 slidably connected to the mounting rod 511, a fixed seat 512 disposed on the mounting rod 511, a rotary motor 513 located in the fixed seat 512, an adjustment part 514 connected to the output end of the rotary motor 513, and an execution part abutting against the adjustment part 514 and connected to the mounting rod 511;

[0062] When it is necessary to adjust the position of the membrane breaking assembly 52 to change its attraction to the spring, the rotary motor 513 starts to work. The operation of the rotary motor 513 drives the adjustment part 514 to move. The moving adjustment part 514 causes the actuator to move on the mounting rod 511, changing the position of the forward seat 519, thereby adjusting the position of the permanent magnet ball 5256. By making the forward seat 519 slide along the mounting rod 511, the membrane breaking assembly 52 can be flexibly adjusted in the axial direction of the air inlet end 4 to adapt to the membrane breaking requirements under different working conditions.

[0063] The adjusting part 514 includes a cam 5110 sleeved on the output end of the rotary motor 513, two drive wheels 5111 circumferentially abutting against the cam 5110, and a third swing arm 5112 connected to the drive wheels 5111; the third swing arm 5112 is movably connected to the actuator; the cam 5110 includes a first circular profile and a second circular profile, the radius of the second circular profile being smaller than the radius of the first circular profile; the first circular profile and the second circular profile are concentrically arranged and connected by at least one smooth transition curve to form a continuous closed non-circular profile; the outer peripheral surface of the non-circular profile includes a protruding section extending from the first circular profile and a concave section extending from the second circular profile, used to achieve periodic contact and gap changes during rotation; by moving the drive wheels 5111 on the outer peripheral surface of the first circular profile, the forward seat 519 moves on the mounting rod 511 without driving the actuator;

[0064] When the adjustment unit 514 starts working, the rotary motor 513 can drive the two cams 5110 to move. At this time, the drive wheel 5111 tends to move from the second circular contour to the first circular contour. By changing the straight distance between the two drive wheels 5111, the clamping arm 516 can complete the clamping and limiting work on the outer wall of the air inlet 4. When the drive wheel 5111 moves backward in the circumference of the first circular contour, even if the cam 5110 continues to rotate, as long as the drive wheel 5111 abuts against the circumference of the first circular contour, the distance between the two clamping arms 516 remains constant, and the forward seat 519 can still move on the mounting rod 511.

[0065] The cam 5110 adopts a non-circular contour design. Through the periodic switching of the convex section and the concave section, the periodic displacement of the drive wheel 5111 is realized, which in turn drives the film breaking component 52 to periodically adjust its position, so that the vibration amplitude of the spring plate presents a periodic change, improving the gas film breaking effect and avoiding incomplete gas film breaking caused by a single vibration amplitude. In this process, the film breaking component 52 is set on the waste gas treatment device 1 through the set mounting rod 511. If the air intake volume of the air intake end 4 is too large, causing the air intake end 4 to vibrate, the film breaking unit 5 can be set in the axial direction of the air intake end 4 through the set clamping arm 516.

[0066] The actuator includes a first swing arm 517 disposed at the output end of the rotary motor 513, a second swing arm 518 for connecting the first swing arm 517 and the forward seat 519, a drive shaft 515 disposed on the third swing arm 5112, and a clamping arm 516 connected to the drive shaft 515 and disposed on the mounting rod 511; a return torsion spring is provided between the clamping arm 516 and the mounting rod 511; when the rotary motor 513 starts working, the moving rotary motor 513 can drive the first swing arm 517 to move, and then the moving first swing arm 517 can drive the second swing arm 518 to move, and the moving second swing arm 518 can drive the forward seat 519 to move, changing the position of the film breaking assembly 52; through the provided torsion spring, it is ensured that the drive wheel 5111 can be in abutting state with the cam 5110, ensuring the normal operation of the device, preventing the forward seat 519 from sliding when the film breaking assembly 52 is working, and improving the working stability of the film breaking assembly 52.

[0067] The membrane breaking assembly 52 includes a mounting bracket 521 fixedly connected to the forward seat 519, and at least three membrane breaking structures disposed on the mounting bracket 521. The three membrane breaking structures form an inverted U-shaped area, which is engaged on the air inlet end 4. The length direction of one membrane breaking structure is perpendicular to the length direction of the other two membrane breaking structures, serving as the top of the inverted U-shaped area. The membrane breaking structure is used to attract the spring sheet on the air inlet end 4, and as the moving assembly 51 operates, it changes the position of the membrane breaking structure in the axial direction of the air inlet end 4, thereby changing the magnitude of the magnetic force, changing the vibration amplitude of the spring sheet, and breaking the air film on the inner wall of the air inlet end 4.

[0068] By causing the membrane-breaking structure to attract the spring sheet on the air inlet 4, as the moving component 51 drives the forward seat 519 to move, the position of the membrane-breaking structure in the axial direction of the air inlet 4 changes, thereby changing the magnitude of the magnetic force of the membrane-breaking structure on the spring sheet, and causing the vibration amplitude of the spring sheet to change accordingly. Through the different amplitude vibrations of the spring sheet, the air film on the inner wall of the air inlet 4 is completely broken. The three membrane-breaking structures arranged in an inverted U-shape can completely wrap around the air inlet 4, uniformly attracting the spring sheet in the upper half of the air inlet 4, ensuring that all spring sheets can vibrate, and avoiding air film residue caused by the lack of vibration of some spring sheets.

[0069] The membrane-breaking structure includes at least two support columns 522 mounted on the mounting frame 521, mounting blocks 523 sleeved on the support columns 522, a propulsion part 524 mounted on one of the mounting blocks 523, and a rotating part 525 connected to the other mounting block 523; the propulsion part 524 abuts against the rotating part 525; the propulsion part 524 includes a connecting seat 5242 mounted on the mounting block 523, a delivery pipe 5241 connected to the connecting seat 5242, an air pump connected to one end of the delivery pipe 5241, a propulsion member located within the connecting seat 5242, a propulsion rod 5243 connected to the propulsion member, and a shift fork 5244 mounted on the propulsion rod 5243. The system includes a pusher seat 5245 that abuts against the shift fork 5244; the shift fork 5244 is U-shaped, and the pusher seat 5245 has an annular groove on its circumference for placing the shift fork 5244; the connecting seat 5242 has a T-shaped chamber; the connecting seat 5242 includes a limiting frame 5247 disposed in the chamber, an adjusting rod 52410 passing through the limiting frame 5247, a sealing piston 5246 connected to one end of the adjusting rod 52410, a support seat 5249 sleeved on the adjusting rod 52410, and a return spring 5248 for connecting the support seat 5249 and the limiting frame 5247; the adjusting rod 52410 is connected to the pusher rod 5243;

[0070] When it is necessary to change the distance between the permanent magnet ball 5256 and the outer wall of the air inlet 4, the air pump starts to work, so that the gas can push the sealing piston 5246 to move. The moving sealing piston 5246 can drive the adjusting rod 52410 to move, which in turn drives the push rod 5243 to move. Then the moving push rod 5243 can drive the shift fork 5244 to move. The moving shift fork 5244 can apply a thrust along its axial direction to the push seat 5245. Since the push seat 5245 abuts against the shorter end of the connecting rod 5255, the position between the two permanent magnet balls 5256 can be changed, so that they can move closer to or away from the outer wall of the air inlet 4. By changing the distance between the permanent magnet ball 5256 and the spring, the magnetic force on the spring is changed. During the rotation or translation of the permanent magnet ball 5256, the change in the direction and magnitude of the magnetic force causes the spring to vibrate, thus completing the work of breaking the air film.

[0071] The propulsion unit 524 and the rotating unit 525 are linked together, which can realize dual adjustment of the magnitude and direction of the attraction force, making the vibration of the spring more flexible and avoiding incomplete gas film rupture caused by vibration in a single direction and a single amplitude. At the same time, the combination of the two can control the distance between the rotating unit 525 and the spring, avoiding deformation of the spring due to excessive magnetic force or insufficient vibration amplitude due to insufficient magnetic force, thereby improving the stability and reliability of gas film rupture.

[0072] The rotating part 525 includes a rotating motor 5251 fixedly mounted on the mounting block 523, a rotating shaft 5252 for connecting the two mounting blocks 523 and disposed at the output end of the rotating motor 5251, a limiting seat 5253 and a fixing frame 5254 respectively disposed on the rotating shaft 5252, a connecting rod 5255 movably connected to the fixing frame 5254, and a permanent magnet ball 5256 disposed on the connecting rod 5255; the pushing seat 5245 is sleeved on the rotating shaft 5252; the connecting rod 5255 is L-shaped, and its shorter end abuts against the pushing seat 5245;

[0073] When the permanent magnet ball 5256 needs to rotate, the rotating motor 5251 starts to work. The rotating motor 5251 can drive the rotating shaft 5252 to rotate, which in turn drives the fixed frame 5254 to rotate. Through the connecting rod 5255, the permanent magnet ball 5256 is driven to rotate, changing the distance between it and the outer wall of the air inlet 4, thereby changing its attraction to the spring sheet.

[0074] By adjusting the distance between the permanent magnet ball 5256 and the spring piece by moving the propulsion seat 5245, the magnetic force can be precisely controlled, thereby precisely adjusting the vibration amplitude of the spring piece to adapt to the needs of breaking up air films of different thicknesses. The rotating part 525 and the propulsion part 524 work together to achieve dual adjustment of the angle and distance of the permanent magnet ball 5256, making the spring piece vibration more flexible and precise, and further improving the efficiency of breaking up air films.

[0075] The gas outlet unit 3 includes a variable diameter pipe 31 connected to the gas outlet end 2, a tapered pipe 32 located at the center of the variable diameter pipe 31, and a flow divider 33 sleeved on the tapered pipe 32 and connected to the inner wall of the variable diameter pipe 31; wherein the variable diameter pipe 31 and the tapered pipe 32 are arranged intersectingly, and the end face with the largest diameter of the tapered pipe 32 is closer to the smallest end face of the variable diameter pipe 31 than the end face with the smallest diameter; the inner wall of the tapered pipe 32 is coated with an antistatic and wear-resistant coating; the flow divider 33 is provided with multiple gas outlet holes, and a gas space is formed between the flow divider 33, the inner wall of the variable diameter pipe 31, and the outer wall of the tapered pipe 32, and the space is connected to a gas input pump through a pipe; the gas outlet unit 3 also includes a sealing assembly disposed on the variable diameter pipe 31, the sealing assembly including a locking motor 34 disposed on the variable diameter pipe 31, multiple flip plates 36 movably disposed on the variable diameter pipe 31, and a transfer frame 35 disposed between adjacent flip plates 36; the locking motor 34 is connected to one of the flip plates 36.

[0076] During the gas discharge process, the gas passes sequentially through the reducer 31 and the cone 32, and is discharged from the reducer 31. During this process, some of the discharged gas is recovered by the gas input pump and reinjected into the gas space. Through the outlet holes on the diverter plate 33, a stable gas curtain is formed on the inner wall of the reducer 31, thus isolating the charged gas from the inner wall of the reducer 31. Then, the locking motor 34 starts working, which drives the connected tilting plate 36 to move. With the cooperation of the tilting plate 36 and the transfer frame 35, the remaining tilting plate 36 is tilted, thus completing the gas discharge and waste gas treatment. This prevents charged ions from adhering to the inner wall of the reducer 31 due to electrostatic adsorption, reducing electrostatic accumulation and adsorption of charged ions, and preventing adhesion to the inner wall. It also prevents the gas film from detaching and flowing back down the inner wall of the cone 32 when the equipment stops or the airflow fluctuates, re-entering the plasma zone and catalytic zone, causing electrode contamination.

[0077] The tapered tube 32 and the variable diameter tube 31 are designed to achieve initial deceleration and flow guidance of the charged gas. The tapered tube 32 forms a guide channel through its variable diameter structure, which guides the charged gas after initial flow guidance by the variable diameter tube 31 to flow smoothly along the inner wall of the tapered tube 32. This avoids the formation of eddies or stagnation of the airflow in the variable diameter tube 31, thereby reducing the probability of contact between the charged gas and the inner wall of the variable diameter tube 31 from the source.

[0078] In a further embodiment, the steps for dividing the upper and lower half of the air intake end 4 are as follows: first, a dividing surface horizontal to the ground is used to divide the air intake end 4 into two regions along the radial direction of the air intake end 4, wherein the region closer to the ground is the lower half and the other is the upper half; the exhaust gas direction is the direction of the center of the air intake end 4.

[0079] Working principle description: After the exhaust gas enters the device through the inlet end 4, it first passes through the membrane breaking unit 5 of the inlet end 4 in cooperation with the spring sheet to break the gas film on the inner wall of the inlet, ensuring that the exhaust gas enters the exhaust gas treatment device 1 evenly; after entering, the exhaust gas flows through the plasma ionization zone and the catalytic zone in sequence. The plasma ionization zone ionizes the exhaust gas to generate active species, which initially degrades the pollutants in the exhaust gas. The catalytic zone further oxidizes or decomposes the intermediate products that are not completely degraded after ionization, realizing the deep treatment of pollutants; the treated clean gas is stably discharged through the outlet unit 3 of the outlet end 2.

[0080] When the membrane breaking operation is required, the rotary motor 513 starts to rotate. The operation of the rotary motor 513 drives the adjustment part 514 to move. The moving adjustment part 514 causes the actuator to move on the mounting rod 511, changing the position of the forward seat 519, thereby adjusting the position of the permanent magnet ball 5256.

[0081] When the adjustment unit 514 starts working, the rotary motor 513 drives the two cams 5110 to move. At this time, the drive wheel 5111 tends to move from the second circular contour to the first circular contour. By changing the linear distance between the two drive wheels 5111, the clamping arm 516 can complete the clamping and limiting work on the outer wall of the air inlet 4. When the drive wheel 5111 moves circumferentially behind the first circular contour, even if the cam 5110 continues to rotate, as long as the drive wheel 5111 abuts against the circumferential of the first circular contour, the two clamping arms will remain in contact. The distance between 516 remains constant, while the forward seat 519 can still move on the mounting rod 511; when the rotary motor 513 starts working, the moving rotary motor 513 can drive the first swing arm 517 to move, and then the moving first swing arm 517 can drive the second swing arm 518 to move, and then the moving second swing arm 518 can drive the forward seat 519 to move, changing the position of the membrane breaking assembly 52; through the torsion spring, it is ensured that the drive wheel 5111 can be in contact with the cam 5110;

[0082] When it is necessary to change the distance between the permanent magnet ball 5256 and the outer wall of the air inlet 4, the air pump starts working, which allows the gas to push the sealing piston 5246 to move. The moving sealing piston 5246 can drive the adjusting rod 52410 to move, which in turn drives the push rod 5243 to move. Then, the moving push rod 5243 can drive the shift fork 5244 to move. The moving shift fork 5244 can apply a thrust along its axial direction to the push seat 5245. Because the push seat 5245 and the connecting rod 5 The shorter end of 255 abuts against the air inlet 4, thereby changing the position between the two permanent magnet balls 5256 so that they can move closer to or further away from the outer wall of the air inlet 4. When the permanent magnet balls 5256 need to rotate, the rotating motor 5251 starts to work. The rotating motor 5251 can drive the rotating shaft 5252 to rotate, thereby driving the fixed frame 5254 to rotate. Through the connecting rod 5255, the permanent magnet balls 5256 are driven to rotate, changing the distance between them and the outer wall of the air inlet 4, thereby changing their attraction to the spring sheet.

[0083] During the gas discharge process, the gas passes through the reducer 31 and the cone 32 in sequence, and is discharged from the reducer 31. During this process, part of the discharged gas is recovered by the gas input pump and injected back into the gas space. Through the gas outlet on the diverter plate 33, a stable air curtain is formed on the inner wall of the reducer 31, which can isolate the charged gas from the inner wall of the reducer 31. Then, the locking motor 34 starts to work, which can drive the connected tilting plate 36 to move. With the cooperation of the tilting plate 36 and the transfer frame 35, the remaining tilting plate 36 can be tilted, thereby completing the gas discharge and waste gas treatment.

[0084] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst, characterized in that, include: The waste gas treatment device (1) allows the waste gas to pass through the plasma ionization zone and the catalytic zone in sequence. The waste gas is ionized by the plasma ionization zone and the intermediate products that are not completely degraded after passing through the plasma zone are oxidized or decomposed by the catalytic zone. The exhaust end (2) is provided on the exhaust gas treatment device (1), and the exhaust unit (3) is located on the exhaust end (2). The air inlet (4) is connected to the exhaust gas treatment device (1), and the membrane breaking unit (5) is located on the air inlet (4). Springs are evenly distributed in the upper half of the air intake end (4) and located on the inner wall of the air intake end (4); The membrane breaking unit (5) includes a movable component (51) that is detachably installed on the air inlet (4), and a membrane breaking component (52) connected to the movable component (51). The membrane breaking assembly (52) is used to attract the spring sheet, so that the spring sheet can vibrate; One end of the spring is fixed to the air inlet (4), and the other end is a free end that extends toward the exhaust gas direction. A gap is reserved between the spring and the inner wall of the air inlet (4).

2. The waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst according to claim 1, characterized in that: The moving component (51) includes a mounting rod (511) inserted into the exhaust gas treatment device (1), a forward seat (519) slidably connected to the mounting rod (511), a fixed seat (512) disposed on the mounting rod (511), a rotary motor (513) located in the fixed seat (512), an adjustment part (514) connected to the output end of the rotary motor (513), and an execution part abutting against the adjustment part (514) and connected to the mounting rod (511).

3. The waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst according to claim 2, characterized in that: The adjustment unit (514) includes a cam (5110) sleeved on the output end of the rotary motor (513), two drive wheels (5111) that circumferentially abut against the cam (5110), and a third swing arm (5112) connected to the drive wheels (5111). The third swing arm (5112) is movably connected to the actuator; The cam (5110) includes a first circular profile and a second circular profile, the radius of the second circular profile being smaller than the radius of the first circular profile; the first circular profile and the second circular profile are concentrically arranged and connected by at least one smooth transition curve to form a continuous closed non-circular profile. The outer peripheral surface of the non-circular contour includes a protruding section extending from the first circular contour and a concave section extending from the second circular contour, which are used to achieve periodic contact and gap changes during rotation; by moving the drive wheel (5111) on the outer peripheral surface of the first circular contour, the forward seat (519) moves on the mounting rod (511) without driving the actuator.

4. The waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst according to claim 3, characterized in that: The actuator includes a first swing arm (517) disposed at the output end of the rotary motor (513), a second swing arm (518) for connecting the first swing arm (517) and the forward seat (519), a drive shaft (515) disposed on the third swing arm (5112), and a clamping arm (516) connected to the drive shaft (515) and disposed on the mounting rod (511). A reset torsion spring is provided between the clamping arm (516) and the mounting rod (511).

5. The waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst according to claim 4, characterized in that: The membrane breaking assembly (52) includes a mounting bracket (521) fixedly connected to the forward seat (519), and at least three membrane breaking structures disposed on the mounting bracket (521); The three membrane-breaking structures form an inverted U-shaped area, which is stuck on the air intake end (4); One of the membrane-breaking structures is perpendicular to the length of the other two membrane-breaking structures, forming the top of the inverted U-shaped region; The membrane breaking structure is used to attract the spring sheet on the air inlet (4) and, with the operation of the moving component (51), change the position of the membrane breaking structure in the axial direction of the air inlet (4), thereby changing the magnitude of the magnetic force, changing the vibration amplitude of the spring sheet, and breaking the air film on the inner wall of the air inlet (4).

6. The waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst according to claim 5, characterized in that: The membrane breaking structure includes at least two support columns (522) disposed on the mounting frame (521), a mounting block (523) sleeved on the support column (522), a pushing part (524) disposed on one of the mounting blocks (523), and a rotating part (525) connected to the other mounting block (523). The propulsion part (524) abuts against the rotating part (525).

7. The waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst according to claim 6, characterized in that: The propulsion unit (524) includes a connecting seat (5242) disposed on the mounting block (523), a delivery pipe (5241) connected to the connecting seat (5242), an air pump connected to one end of the delivery pipe (5241), a propulsion member located in the connecting seat (5242), a propulsion rod (5243) connected to the propulsion member, a shift fork (5244) disposed on the propulsion rod (5243), and a propulsion seat (5245) abutting against the shift fork (5244). The shift fork (5244) is U-shaped, and the push seat (5245) is provided with an annular groove on the circumferential side for placing the shift fork (5244); The connecting seat (5242) is provided with a T-shaped chamber; The connecting seat (5242) includes a limiting frame (5247) disposed in the T-shaped chamber, an adjusting rod (52410) passing through the limiting frame (5247), a sealing piston (5246) connected to one end of the adjusting rod (52410), a support seat (5249) sleeved on the adjusting rod (52410), and a return spring (5248) for connecting the support seat (5249) and the limiting frame (5247). The adjusting rod (52410) is connected to the push rod (5243).

8. The waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst according to claim 7, characterized in that: The rotating part (525) includes a rotating motor (5251) fixedly mounted on the mounting block (523), a rotating shaft (5252) for connecting the two mounting blocks (523) and disposed at the output end of the rotating motor (5251), a limiting seat (5253) and a fixing frame (5254) respectively disposed on the rotating shaft (5252), a connecting rod (5255) movably connected to the fixing frame (5254), and a permanent magnet ball (5256) disposed on the connecting rod (5255); the push seat (5245) is sleeved on the rotating shaft (5252); The connecting rod (5255) is L-shaped, with its shorter end abutting against the propulsion seat (5245).

9. The waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst according to claim 8, characterized in that: The air outlet unit (3) includes a variable diameter pipe (31) connected to the air outlet end (2), a cone pipe (32) located at the center of the variable diameter pipe (31), and a flow divider (33) sleeved on the cone pipe (32) and connected to the inner wall of the variable diameter pipe (31). The reducing pipe (31) and the tapered pipe (32) are arranged in a cross manner, and the end face of the tapered pipe (32) with the largest diameter is closer to the end face of the reducing pipe (31) with the smallest diameter relative to the end face of the tapered pipe (32). The inner wall of the tapered tube (32) is coated with an antistatic and wear-resistant coating; The flow divider (33) is provided with multiple air outlets. A gas space is formed between the flow divider (33), the inner wall of the variable diameter pipe (31), and the outer wall of the tapered pipe (32). The gas space is connected to the gas input pump through a pipe.

10. The waste gas treatment device based on the synergistic effect of low-temperature plasma and catalyst according to claim 9, characterized in that: The air outlet unit (3) also includes a sealing assembly disposed on the variable diameter pipe (31). The sealing assembly includes a locking motor (34) disposed on the variable diameter pipe (31), a plurality of flip plates (36) movably disposed on the variable diameter pipe (31), and a transfer frame (35) disposed between adjacent flip plates (36). The locking motor (34) is connected to one of the flip plates (36).

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