A purification system for an exhaust treatment device

Abstract

The utility model provides a purification system for waste gas treatment device, include: filler mechanism, including rotation setting a plurality of filler frame, vertical through connection a plurality of filler frame's pivot, connect pivot and be driven rotation's passive rotation mechanism of waste gas, every filler frame is separated and is formed a plurality of filler area by a plurality of circumferential interval distribution's isolator, a plurality of isolator along the reverse spiral extension of pivot rotation direction and through be equipped with a plurality of the ventilation hole of adjacent filler area's intercommunication, be filled with a plurality of filler piece in the filler area, spraying mechanism includes a plurality of spraying piece respectively corresponding a plurality of filler frame top and be used for spraying washing liquid. So that washing liquid can be affected by centrifugal force and slowly flow from inside to outside along the gap between filler piece after spraying to filler frame, waste gas is pushed by isolator reversely and can flow reversely with washing liquid, to prolong gas-liquid contact time, improve pollutant absorption effect.

Description

Technical Field

[0001] This utility model relates to the field of purification systems, specifically a purification system for waste gas treatment devices. Background Technology

[0002] Waste gas treatment devices are mainly used to purify pollutants emitted during industrial production, especially acidic or alkaline waste gases. Currently, most common waste gas treatment devices adopt a spray tower structure: waste gas enters from the bottom of the tower and flows upward through the packing layer in the middle. At the same time, washing liquid is sprayed down from the top by a spraying mechanism, and comes into counter-current contact with the rising waste gas in the packing layer, thereby removing pollutants. Finally, the purified gas is discharged from the top of the tower.

[0003] In the aforementioned waste gas treatment device, the packing layer and the spraying mechanism together form a purification system. However, existing packing layers and spraying mechanisms are typically fixed structures, resulting in a relatively simple flow path for the spray liquid, making it difficult to evenly wet all the packing material within the packing layer. Some packing material fails to form an effective water film due to prolonged lack of coverage by the washing liquid, thus reducing its purification effect. Simultaneously, after entering the packing layer, the waste gas tends to rise along a fixed path, causing most of the waste gas to only contact the water film in localized areas. This results in insufficient effective contact area and reaction time between the gas and liquid phases, thereby affecting the overall waste gas purification efficiency.

[0004] The research objective of this utility model is to design a purification system for waste gas treatment devices to address the problems existing in the prior art. Utility Model Content

[0005] This invention provides a purification system for a waste gas treatment device, which can effectively solve the above-mentioned problems.

[0006] This utility model is implemented as follows:

[0007] A purification system for an exhaust gas treatment device, disposed within a corresponding tower, the purification system comprising:

[0008] The packing mechanism includes several packing frames that are rotatably arranged and used for the vertical flow of exhaust gas, a rotating shaft that vertically connects the several packing frames, and a passive rotating mechanism that connects to the rotating shaft and is driven to rotate by the exhaust gas. Each packing frame is divided into several packing areas by several circumferentially spaced isolation members. The several isolation members extend in a reverse spiral along the rotation direction of the rotating shaft and are provided with several vent holes that connect adjacent packing areas. Several packing elements are filled in the packing areas.

[0009] The spraying mechanism includes several spraying elements corresponding to the top of several packing frames and used for spraying washing liquid; the exhaust gas drives the passive rotating mechanism and the rotating shaft to rotate and drives several packing frames to rotate, and the washing liquid in several packing areas moves outward and is decelerated by the reverse spiral obstruction of several isolation elements.

[0010] Furthermore, the packing frame includes an annular plate and a perforated plate disposed at the upper and lower ends of the annular plate. The inner and outer ends of adjacent isolation members correspond to each other radially along the packing frame. A plurality of isolation members are driven by a vibration driving device to vibrate periodically. When the washing liquid is sprayed and the plurality of packing frames rotate, the plurality of isolation members vibrate periodically to prevent the formation of a water film at the plurality of vent holes.

[0011] Furthermore, the isolation component includes an inner plate that is vertically arranged and extends laterally in a spiral manner, and an outer plate that is spaced apart on both sides of the inner plate in the lateral direction. The inner plate is provided with a plurality of vent pipes that pass through the two outer plates at both ends in the lateral direction. A vibration damping layer is filled between the inner plate and the plurality of vent pipes and the two outer plates. The inner plate is driven by the vibration driving device to vibrate periodically.

[0012] Furthermore, the vibration driving device includes a vibration tube disposed within the rotating shaft and corresponding to the isolator, a cam rotatably disposed within the vibration tube, and a rotation driving device for driving the cam to rotate. The inner ends of several inner plates extend through the rotating shaft and are connected to the vibration tube. The damping layer is made of a flexible material and includes a sheet-like portion spaced between the inner plate and the outer plate, and an annular portion spaced between the outer periphery of both ends of the vent pipe and the outer plate.

[0013] Furthermore, the inner diameter of the vent holes of each of the isolation components gradually increases and the density gradually decreases from the inside to the outside. The spray component includes a spray pipe and a plurality of spray heads that are connected to the spray pipe and used to spray washing liquid downward to cover the corresponding packing frame. The density of the plurality of spray heads gradually decreases from the inside to the outside.

[0014] Furthermore, the plurality of packing elements include a plurality of first packings disposed on the outer periphery of each of the packing areas, a plurality of second packings disposed on the inner side of the plurality of first packings, and the plurality of first packings are configured as multi-faceted hollow spheres with a plurality of through holes for vibration damping.

[0015] Furthermore, the passive rotation mechanism includes an impeller driven by exhaust gas and a speed-increasing gearbox that links the impeller and the shaft. The speed-increasing gearbox includes a large gear and a small gear that mesh vertically and are respectively connected to the impeller and the shaft.

[0016] Furthermore, the number of the packing frame and the spraying component is set to two. The upper end of the spraying component on the upper side is horizontally spaced with a demisting component for demisting. The upper end of the rotating shaft is rotatably connected to the middle of the demisting component.

[0017] The beneficial effects of this utility model are:

[0018] 1. By rotating the packing frame and setting several isolation components in a reverse spiral configuration, the washing liquid sprayed into the packing frame can continuously flow from the inside to the outside along the gaps between the packing components under the action of centrifugal force. The flow speed is slowed down by the isolation components, so that the washing liquid in each packing area continuously flows slowly from the inside to the outside through several packing components. This improves the uniformity of the distribution of the washing liquid in the packing frame and increases the probability that the surface of several packing components is completely covered with a water film. As a result, after the exhaust gas enters the packing frame upward, it can ensure that there are no dead corners in the gas-liquid contact. Furthermore, the exhaust gas is pushed in the opposite direction by the isolation components and passes through several vent holes on them, allowing it to flow in the opposite direction to the washing liquid, thereby prolonging the gas-liquid contact time and improving the pollutant absorption effect. Based on this, through the setting of the rotating shaft and passive rotation mechanism, several packing frames can be driven to rotate by the exhaust gas, and the rotation speed varies with the exhaust gas flow rate. This allows the packing frame rotation speed to increase when the exhaust gas flow rate is large, thereby increasing the flow speed of the washing liquid from the inside to the outside, so as to flush and carry the waste liquid on the surface of the packing to the inner wall of the tower. The wall flow effect is used to make the waste liquid flow down the inner wall of the tower quickly and form a new water film on the surface of the packing. This avoids the situation where the surface of the packing is covered by a large amount of pollutants and cannot form a new water film. When the exhaust gas flow rate is small, the rotation speed of the packing frame decreases, which can also fully ensure the pollutant purification effect. This makes the rotation of the packing frame both energy-saving and adaptively adjustable with changes in the exhaust gas flow rate.

[0019] 2. By radially corresponding the inner and outer ends of adjacent isolation components, the isolation components can effectively guide and decelerate the centrifugal outward movement of the washing liquid in the packing area in a reverse spiral, improving the stability and reliability of the isolation components in guiding the washing liquid. Furthermore, by adding a vibration drive device, when the washing liquid is sprayed and several packing frames rotate, several isolation components periodically vibrate to prevent the formation of water films at several vent holes. This avoids the formation of water films at several vent holes on several isolation components after being covered by the detergent spray, which would obstruct the flow of exhaust gas and ensure the stability of smooth flow of exhaust gas within the packing frames.

[0020] 3. By dividing the isolation component into an inner plate and an outer plate, the vent pipes forming the vent holes are placed on the inner plate. With the addition of a vibration damping layer, the vibration of the vibration drive device can be accurately transmitted through the inner plate to several vent pipes to vibrate and break up the water film formed in the vent holes. The vibration transmitted towards the outer plate is weakened by the vibration damping layer. Thus, on the basis of removing the water film in the vent holes by vibration, the outer plate is also damped to prevent the vibration from being transmitted to several packing components in the packing area, causing damage to the packing components or the water film on them to fall off. This can simultaneously ensure the stability of the smooth flow of exhaust gas in the packing frame and the stability of the water film on the surface of the packing components.

[0021] 4. By connecting the vibrating tube to the inner ends of several inner plates, the installation stability of the vibrating tube is improved, so that the eccentric rotation of the cam can stably drive the vibrating tube to vibrate, thereby driving several inner plates to vibrate stably. In addition, the vibration between the inner and outer plates is weakened not only by the plate-shaped part, but also by the setting of the annular part to weaken the vibration transmission between the vent pipe and the outer plate. Furthermore, the flexible annular part provides the vent pipe with a certain vibration space and flexible buffer, avoiding the vent pipe from being damaged or broken due to vibration.

[0022] 5. By using a layout with denser vent holes on the inside and sparser vent holes on the outside, and smaller vent holes on the inside and larger vent holes on the outside, as well as a layout with denser vent holes on the inside and sparser vent holes on the outside of the spray head, the washing liquid is concentrated and sprayed onto the inside of the packing frame. The smaller vent holes on the inside of the packing frame allow the washing liquid to be guided outward in a reverse spiral motion, improving the outward guiding effect of the washing liquid from the inside of the packing frame. In the area where the washing liquid flows to the outside of the packing frame and is fully dispersed, larger and sparser vent holes are set on the packing components to improve the efficiency of exhaust gas flow. This allows the exhaust gas to enter the packing frame upward, not only being pushed by the packing components and flowing in the opposite direction to the washing liquid, but also having a tendency to flow from the inside to the outside along the gaps between the packing components due to the change in the layout of the vent holes on the packing components, further extending the gas-liquid contact time.

[0023] 6. By setting up the gearbox, the rotational speed of the packing frame can be amplified even when the impeller rotates at low speed, ensuring the stability of the packing frame rotational speed and ensuring the gas-liquid contact effect.

[0024] 7. By setting a vibration-damping first packing material on the outer periphery of the second packing material, when the isolation element vibrates to remove the water film in the vent, the energy can be dissipated by several first packing materials in contact with the isolation element, so as to avoid the complete detachment of its own water film and loss of exhaust gas purification function, and to prevent the vibration of the isolation element from continuing to be transmitted to the second packing material and causing the water film on the surface of the second packing material to detach. Under the premise of ensuring that the water film in the vent is broken, the stability of the water film on the surface of the packing material is ensured, thereby ensuring the exhaust gas purification effect. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the waste gas treatment device.

[0026] Figure 2 This is a partial cross-sectional view of the waste gas treatment device.

[0027] Figure 3 This is a schematic diagram of the structure of the filler frame after the upper perforated plate has been removed.

[0028] Figure 4 This is a schematic diagram of the isolation component and the vibrating tube.

[0029] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0030] Figure 6 This is a schematic diagram of the inner panel structure.

[0031] Figure 7 This is a cross-sectional structural diagram of the rotating shaft, vibrating tube, and vibration drive device.

[0032] Figure 8 A top view of the packing frame after removing the upper and lower perforated plates. Detailed Implementation

[0033] Example 1

[0034] Reference Figure 1-7 As shown, a purification system for an exhaust gas treatment device is disclosed. The exhaust gas treatment device includes a tower body 1 and the purification system disposed within the tower body 1. The tower body 1 includes an outlet 11 and an inlet 12 distributed vertically. The inlet 12 is used to input exhaust gas.

[0035] The purification system includes:

[0036] The packing mechanism 2 includes a plurality of packing frames 21 rotatably arranged for vertical flow of exhaust gas, a rotating shaft 23 vertically connecting the plurality of packing frames 21, and a passive rotating mechanism 24 connected to the rotating shaft 23 and driven to rotate by the exhaust gas. Each packing frame 21 is divided into a plurality of packing zones 211 by a plurality of circumferentially spaced isolators 22. The plurality of isolators 22 extend in the opposite spiral direction along the rotation direction of the rotating shaft 23 and are provided with a plurality of vent holes 2212 communicating with adjacent packing zones 211. The packing zones 211 are filled with a plurality of packing elements 212. Specifically, the plurality of packing frames 21 are vertically spaced between the outlet 11 and the inlet 12.

[0037] The spraying mechanism 3 includes several spraying elements that correspond to the top of several packing frames 21 and are used to spray washing liquid; the exhaust gas drives the passive rotation mechanism 24 and the rotating shaft 23 to rotate and drive several packing frames 21 to rotate, and the washing liquid in several packing areas 211 moves outward and is slowed down by the reverse spiral obstruction of several isolation elements 22.

[0038] The mass transfer process between the washing liquid and the exhaust gas: Soluble pollutants in the exhaust gas (such as acidic gas H2SO4 and alkaline gas NH3) come into contact with the washing liquid on the surface of the packing components and are absorbed or transformed through physical dissolution or chemical reactions (such as acid-base neutralization). For example, acidic exhaust gas reacts with alkaline washing liquid (NaOH) to form salts, which are discharged with the wastewater.

[0039] The above structure, by rotating the packing frame 21 and arranging the several isolation members 22 in a reverse spiral configuration, allows the washing liquid sprayed into the packing frame 21 to flow continuously from the inside to the outside along the gaps between the packing members under the action of centrifugal force. The flow speed is slowed down by the isolation members 22, so that the washing liquid in each packing area 211 continuously flows slowly from the inside to the outside through the several packing members 212. This improves the uniformity of the distribution of the washing liquid in the packing frame 21 and increases the probability that the surface of the several packing members 212 is completely covered with a water film. As a result, after the exhaust gas enters the packing frame 21 upward, it can ensure that there are no dead corners in the gas-liquid contact. Furthermore, the exhaust gas is pushed in the opposite direction by the isolation members 22 and passes through the several vent holes 2212 on them, allowing it to flow in the opposite direction to the washing liquid, thereby prolonging the gas-liquid contact time and improving the pollutant absorption effect. Based on this, through the setting of the rotating shaft 23 and the passive rotating mechanism 24, several packing frames 21 can be driven to rotate by the exhaust gas, and the rotation speed changes with the exhaust gas flow rate. Thus, when the exhaust gas flow rate is large, the rotation speed of the packing frame 21 increases, thereby increasing the flow speed of the washing liquid from the inside to the outside, so as to flush and carry away the waste liquid on the surface of the packing 212 to the inner wall of the tower body 1. The wall flow effect is used to make the waste liquid flow down the inner wall of the tower body 1 quickly and form a new water film on the surface of the packing 212. This avoids the situation where the surface of the packing 212 is covered by a large amount of pollutants and cannot form a new water film. When the exhaust gas flow rate is small, the rotation speed of the packing frame 21 decreases, which can also fully ensure the pollutant purification effect. This makes the rotation of the packing frame 21 both energy-saving and adaptively adjustable with the change of exhaust gas flow rate.

[0040] To ensure the smooth and stable flow of exhaust gas within the packing frame 21, the packing frame 21 includes an annular plate 213 and perforated plates 214 located at the upper and lower ends of the annular plate 213. The inner and outer ends of adjacent isolation members 22 correspond radially to each other along the packing frame 21, and several isolation members 22 are driven by a vibration driving device 4 to vibrate periodically. This structure, through the radial correspondence of the inner and outer ends of adjacent isolation members 22, allows the isolation members 22 to fully facilitate the centrifugal outward movement of the washing liquid within the packing zone 211. The reverse spiral guide deceleration improves the stability and reliability of the isolation member 22 in guiding the washing liquid. Furthermore, with the addition of the vibration drive device 4, when the washing liquid is sprayed and the packing frames 21 rotate, the isolation members 22 periodically vibrate to prevent the formation of water film at the vent holes 2212. This avoids the formation of water film at the vent holes 2212 on the isolation members 22 after being covered by the detergent spray, thus preventing obstruction of the flow of exhaust gas and ensuring the stability of the smooth flow of exhaust gas within the packing frame 21.

[0041] To improve the stability of the packing component 212, the isolation component 22 includes an inner plate 221 that is vertically arranged and extends laterally in a spiral manner, and an outer plate 222 that is spaced apart on both sides of the inner plate 221. The inner plate 221 is provided with a plurality of vent pipes 2211 that pass through the two outer plates 222 at both ends. A vibration damping layer 223 is filled between the inner plate 221 and the plurality of vent pipes 2211 and the two outer plates 222. The inner plate 221 is driven by the vibration driving device 4 to vibrate periodically. Specifically, the plurality of vent pipes 2211 and the inner plate 221 are integrally formed. The above structure divides the isolation member 22 into an inner plate 221 and an outer plate 222. The ventilation pipe 2211 forming the ventilation hole 2212 is set on the inner plate 221. With the addition of the vibration damping layer 223, the vibration of the vibration driving device 4 can be accurately transmitted through the inner plate 221 to several ventilation pipes 2211 to vibrate and break the water film formed in the ventilation hole 2212. The vibration transmitted towards the outer plate 222 is damped by the vibration damping layer 223. Thus, on the basis of removing the water film in the ventilation hole 2212 by vibration, the outer plate 222 is damped to avoid the vibration being transmitted to several packing members 212 in the packing area 211, which would cause damage to the packing members 212 or the water film on them to fall off. This can simultaneously ensure the stability of the smooth flow of exhaust gas in the packing frame 21 and the stability of the water film on the surface of the packing members 212.

[0042] To improve the driving stability of the vibration drive device 4, the vibration drive device 4 includes a vibration tube 41 disposed within the rotating shaft 23 and corresponding to the isolation member 22, a cam 42 rotatably disposed within the vibration tube 41, and a rotation drive device 43 for driving the cam 42 to rotate. The inner ends of several inner plates 221 extend into the rotating shaft 23 and are connected to the vibration tube 41. The damping layer 223 is made of a flexible material and includes a sheet-like portion 2231 spaced between the inner plate 221 and the outer plate 222 and an annular portion 2232 spaced between the outer periphery of both ends of the vent pipe 2211 and the outer plate 222. Specifically, the damping layer 223 can be made of a flexible damping material such as rubber. Specifically, the number of protrusions 42 is set to several. In other embodiments, multiple vibration drive devices 4 can be disposed within the vibration tube 41. The above structure connects the vibrating tube 41 to the inner ends of several inner plates 221, which improves the installation stability of the vibrating tube 41. This allows the eccentric rotation of the cam 42 to stably drive the vibrating tube 41 to vibrate, thereby driving the several inner plates 221 to vibrate stably. In addition, the vibration between the inner plate 221 and the outer plate 222 is weakened not only by the plate-shaped part 2231, but also by the setting of the annular part 2232 to weaken the vibration transmission between the vent pipe 2211 and the outer plate 222. Furthermore, the flexible annular part 2232 provides the vent pipe 2211 with a certain vibration space and flexible buffer, preventing the vent pipe 2211 from being damaged or broken due to vibration.

[0043] To improve the stability of the outward flow of liquid, the inner diameter of the vent holes 2212 of each of the isolation components 22 gradually increases and the density gradually decreases from the inside to the outside. The spray component includes a spray pipe 31 and a plurality of spray heads 32 that are connected to the spray pipe 31 and used to spray washing liquid downward to cover the corresponding packing frame 21. The density of the plurality of spray heads 32 gradually decreases from the inside to the outside. The above structure, through the dense inner and sparse outer arrangement of the vent holes 2212 and the dense inner and sparse outer arrangement of the spray head 32, allows the washing liquid to be concentrated and sprayed onto the middle side of the packing frame 21. The small inner vent holes 2212 can be fully guided outward in a reverse spiral, improving the effect of guiding the washing liquid outward from the middle side of the inner end of the isolation plate. In the area where the washing liquid flows to the outside of the packing frame 21 and is fully dispersed, larger and sparser vent holes 2212 are set on the isolation member 22 to improve the efficiency of exhaust gas flow. This allows the exhaust gas to enter the packing frame 21 upward, not only being pushed by the isolation member 22 and flowing in the opposite direction to the washing liquid, but also having a tendency to flow from the inside to the outside along the gaps between the packing members due to the change in the arrangement of the vent holes 2212 of the isolation member 22, further extending the gas-liquid contact time.

[0044] To increase the rotational speed of the packing frame 21, an air inlet 12, with its inner end smaller than its outer end, is provided transversely through the side wall of the tower body 1. The passive rotation mechanism 24 includes an impeller 241 located at the inner end of the air inlet 12 and a speed-increasing gearbox 242 that links the impeller 241 and the rotating shaft 23. The speed-increasing gearbox 242 includes a large gear 2421 and a small gear 2422 that mesh vertically and are respectively connected to the impeller 241 and the rotating shaft 23. Thus, by setting up the gearbox, the rotational speed of the packing frame 21 can be amplified even when the impeller 241 rotates at a low speed, ensuring the stability of the rotation of the packing frame 21 and ensuring the gas-liquid contact effect.

[0045] To improve the utilization rate of the washing liquid, a waste liquid zone 13 is set at the bottom of the tower body 1. An overflow tank 5 with an overflow port corresponding to the waste liquid zone 13 and an overflow discharge pipe 51 connected to the overflow tank 5 are provided outside the tower body 1. A filter tank 6 with its inlet end connected to the waste liquid zone 13 and used for filtering pollutants is also provided outside the tower body 1. A circulation pump 61 and a circulation pipe 62 connect the outlet end of the filter tank 6 and the inlet end of the spray element. Thus, the washing liquid filtered by the filter tank 6 can be recirculated back to the spray element, improving the utilization rate of the washing liquid. Furthermore, the overflow tank 5 and overflow discharge pipe 51 allow for timely discharge when a malfunction causes the water level in the waste liquid zone 13 to rise continuously, preventing waste liquid or washing liquid from entering the exhaust gas pipeline through the air inlet 12 and damaging the fan, thereby improving the safety of the purification system used in the exhaust gas treatment device.

[0046] To improve the cleanliness of the purified exhaust gas, two packing frames 21 and two spray elements are provided. A demister 7 is laterally spaced between the upper spray element and the outlet 11 for demisting. The upper end of the rotating shaft 23 is rotatably connected to the middle of the demister 7. Specifically, the demister 7 can be a baffle plate or a wire mesh demister. Thus, by adding the demister 7, the waste liquid droplets carried by the purified exhaust gas can be intercepted by the demister 7 as it flows upward to the outlet 11 for discharge, thereby improving the cleanliness of the purified gas and preventing secondary pollution.

[0047] Example 2

[0048] refer to Figure 8 The difference between this embodiment and Embodiment 1 is that:

[0049] Instead of using a complex vibration reduction structure, vibration reduction is achieved directly by changing the shape of the packing. The packing components 212 include a number of first packings 2121 filled on the outer periphery of each packing area 211 and a number of second packings 2122 filled on the inner side of the number of first packings 2121. The number of first packings 2121 are multi-faceted hollow spheres with a number of through holes for vibration reduction. Specifically, the second packings 2122 can also be multi-faceted hollow spheres, or they can be other types of packings such as Pall rings. The above structure provides vibration-damping first packing 2121 around the outer periphery of the second packing 2122. When the isolation member 22 vibrates to remove the water film in the vent 2212, the energy is dissipated by the vibration of the first packing 2121 in contact with the isolation member 22, so as to avoid the complete detachment of its own water film and loss of exhaust gas purification function, and to prevent the vibration of the isolation member 22 from continuing to be transmitted to the second packing 2122 and causing the water film on the surface of the second packing 2122 to detach. Under the premise of ensuring that the water film in the vent 2212 can be broken, the stability of the water film on the surface of the packing member 212 is ensured, thereby ensuring the exhaust gas purification effect.

[0050] It should be noted that this embodiment is implemented in the same way as embodiment one in terms of principle and technical effect. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in embodiment one.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A purification system for exhaust gas treatment devices, provided in a corresponding tower body (1), characterized in that, The purification system comprises: The filler mechanism (2) comprises a plurality of filler frames (21) arranged in rotation and used for up and down flow of waste gas, a rotating shaft (23) vertically penetrating and connecting the plurality of filler frames (21), a passive rotating mechanism (24) connected with the rotating shaft (23) and driven to rotate by the waste gas, each of the filler frames (21) is separated into a plurality of filler areas (211) by a plurality of circumferentially spaced and distributed partitioning pieces (22), the plurality of partitioning pieces (22) extend in a reverse spiral along the rotating direction of the rotating shaft (23) and are provided with a plurality of air holes (2212) penetrating and connecting adjacent filler areas (211), and the filler areas (211) are filled with a plurality of filler pieces (212); The spraying mechanism (3) comprises a plurality of spraying pieces corresponding to the plurality of filler frames (21) above and used for spraying washing liquid, the passive rotating mechanism (24) and the rotating shaft (23) are driven to rotate by the waste gas and drive the plurality of filler frames (21) to rotate, the washing liquid in the plurality of filler areas (211) moves outward and is slowed down by the reverse spiral resistance of the plurality of partitioning pieces (22).

2. A purification system for an exhaust treatment device as recited in claim 1, wherein, The filler frame (21) comprises an annular plate (213) and a hollow plate (214) arranged at the upper and lower ends of the annular plate (213), the inner ends and the outer ends of adjacent partitioning pieces (22) correspond to each other in the radial direction of the filler frame (21), and the plurality of partitioning pieces (22) are periodically vibrated by a vibration driving device (4); when the washing liquid is sprayed and the plurality of filler frames (21) rotate, the plurality of partitioning pieces (22) are periodically vibrated to prevent the formation of a water film at the plurality of air holes (2212).

3. A purification system for an exhaust treatment device as recited in claim 2, wherein, The partitioning piece (22) comprises an inner plate (221) arranged vertically and extending in a lateral spiral, an outer plate (222) arranged at the lateral two sides of the inner plate (221) and spaced apart, a plurality of air pipes (2211) penetrating the inner plate (221) laterally and penetrating both the outer plates (222) at both ends, and a damping layer (223) filled between the inner plate (221), the plurality of air pipes (2211) and the two outer plates (222), the inner plate (221) is periodically vibrated by the vibration driving device (4).

4. A purification system for an exhaust treatment device as recited in claim 3, wherein, The vibration driving device (4) comprises a vibration pipe (41) arranged in the rotating shaft (23) and corresponding to the partitioning piece (22), a cam (42) arranged in rotation in the vibration pipe (41), and a rotating driving device (43) used for driving the cam (42) to rotate, the inner ends of the plurality of inner plates (221) penetrate into the rotating shaft (23) and are connected with the vibration pipe (41), the damping layer (223) is made of flexible material and comprises a sheet-shaped part (2231) arranged between the inner plate (221) and the outer plate (222) and an annular part (2232) arranged annularly between the outer periphery of both ends of the air pipe (2211) and the outer plate (222).

5. A purification system for an exhaust treatment device as recited in claim 1, wherein, The air vent holes (2212) of each of the partitions (22) gradually increase in inner diameter and decrease in density from inside to outside, the spraying member comprises a spraying pipeline (31) and a plurality of spraying heads (32) connected to the spraying pipeline (31) and used for spraying downwardly to cover the corresponding filler frame (21).

6. A purification system for an exhaust treatment device as recited in claim 1, wherein, The filler members (212) comprise a plurality of first fillers (2121) arranged outside each of the filler areas (211) and a plurality of second fillers (2122) arranged inside the first fillers (2121), and the first fillers (2121) are hollow multi-faceted balls provided with a plurality of through holes and used for damping.

7. A purification system for an exhaust treatment device as recited in claim 1, wherein, The passive rotating mechanism (24) comprises an impeller (241) driven by exhaust gas, a speed increasing gear box (242) connected to the impeller (241) and the rotating shaft (23), and a large gear (2421) and a small gear (2422) vertically engaged and respectively connected to the impeller (241) and the rotating shaft (23) in the speed increasing gear box (242).

8. A purification system for an exhaust treatment device as recited in claim 1, wherein, The number of the filler frames (21) and the spraying members is both two, the upper spraying member is transversely provided with a demisting member (7) used for demisting at the upper end, and the rotating shaft (23) is rotatably connected to the middle part of the demisting member (7).

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