Post-processing device and purification method for printing and dyeing waste gas

Abstract

The present invention discloses a post-processing device and purification method for printing and dyeing waste gas, and the present invention relates to the field of waste gas treatment technology. The post-processing device and purification method for printing and dyeing waste gas, through the arrangement of a cleaning component and a scraper component, can drive a large gear and a transmission shaft to operate simultaneously through the operation of the transmission component during equipment maintenance, so that the filler plate can rotate through the cooperation of an annular frame fixedly installed on the outside and an annular slide groove. During the rotation, several filter screen frames on the outside can fit together with cleaning brushes installed on the top surfaces of several fixed plates to scrape and brush off residual debris. At the same time, when the large gear drives the cleaning rod to operate through the transmission shaft, it can simultaneously drive the cleaning scraper to rotate on the top surface of the filter plate to perform cleaning operations until the scraped debris falls into the corresponding collection box along the notch, ensuring the purification method of the equipment while improving the convenience of equipment maintenance and cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a post-processing device and a purification method for printing and dyeing waste gas. Background Art

[0002] With the continuous improvement of my country's economic level, waste gas treatment has become an important environmental protection investment project in my country's environmental protection field. The printing and dyeing industry often generates a large amount of waste gas during production. The traditional adsorption method usually involves chemically reacting the waste gas with the reaction solution to decompose and adsorb the pollutants contained in the waste gas. For example, the method and device for pretreatment of waste gas generated by printing and dyeing wastewater with the publication number "CN103691286A" mainly uses fillers and reaction liquids to make the waste gas undergo physical and chemical reactions. Although it can achieve a certain purification effect, the recovery of fillers and reaction liquids during the treatment process will cause debris and particles in the waste gas to remain inside the equipment, affecting the purification effect. At the same time, it is necessary to maintain components such as the filter when replacing the fillers, resulting in poor equipment convenience and maintenance performance. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides a post-processing device and purification method for printing and dyeing waste gas, which solves the problems of poor maintenance convenience and residual impurity particles that easily affect the purification of waste gas.

[0004] To achieve the above purpose, the present invention is implemented through the following technical solutions: a post-processing device for printing and dyeing waste gas, including a tank body, an exhaust gas inlet is opened at the lower side of the tank body, a liquid storage tank and a pump body are fixedly installed on the side of the tank body, an exhaust pipe is fixedly installed on the top surface of the tank body, a filling tray is provided inside the tank body, a plurality of filter racks are fixedly installed inside the filling tray, a cleaning component is provided on the outside of the filling tray, and the cleaning component includes an outer disc rack and a bottom disc rack, the bottom disc rack is fixedly installed inside the tank body, and both sides of the top surface of the outer disc rack are fixed. A positioning piece is fixedly installed, and the positioning pieces on both sides are fixedly installed on both sides of the interior of the tank body respectively, annular slide grooves are provided on the inner sides of the outer disc frame and the chassis frame, an annular frame is fixedly installed on the outer side of the filling disc, and is rotatably installed on the inside of the outer disc frame and the chassis frame through the annular frame, a number of drainage ports are symmetrically provided on the inside of the outer disc frame, a number of the drainage ports are fixedly installed with fixing plates, a number of the fixing plates are fixedly installed on the top surfaces of the fixing plates, a transmission assembly for driving is provided at the bottom of the filling disc, and a collecting assembly is provided at the bottom of the chassis frame.

[0005] Preferably, the transmission assembly includes a large gear, which is fixedly mounted on the bottom of the filler tray, and a transmission shaft is fixedly mounted on the bottom of the large gear. A small gear assembly is provided at the bottom of the chassis frame, and the small gear assembly and the large gear are meshed with each other. A drive motor is fixedly mounted on the inner side of the tank body, and a drive track for transmission is rotatably connected between the output end of the drive motor and the small gear assembly.

[0006] Preferably, the chassis frame is conical in shape, and a distance is left between the inner side of the chassis frame and the filling plate. Several cleaning brushes are installed to fit together with the outer sides of several filter frames installed inside the filling plate. A sealing gasket is fixedly installed between the annular frame fixedly installed on the outside of the filling plate and the annular slide groove. The outer disc frame fits together with the chassis frame through the cooperation of the positioning pieces on both sides of the top surface.

[0007] Preferably, the positioning member includes a positioning block, the positioning block is fixedly mounted on the inner side of the tank body, a support spring is fixedly mounted on the bottom of the positioning block, a connecting rod is fixedly mounted on the other end of the support spring, and the connecting rod is fixedly mounted on one side of the top surface of the outer disc frame and fixedly connected.

[0008] Preferably, a water-passing tray is fixedly mounted on the top surface of the outer tray frame, and the water-passing tray and the pump body mounted on the outside of the tank body are communicated with each other through a hose.

[0009] Preferably, the collection assembly includes a recovery rack, a positioning plate is fixedly installed on the bottom of the recovery rack, and is fixedly installed inside the tank body through the positioning plate, an annular baffle is fixedly installed between the top surface of the recovery rack and the chassis frame, a water spray plate is fixedly installed on the bottom of the positioning plate, a recovery pipe is fixedly installed inside the positioning plate, slots are opened on both sides of the inside of the annular baffle, a filter plate is fixedly installed inside the slot, and a scraper assembly is provided on the top surface of the filter plate.

[0010] Preferably, the scraper assembly includes a cleaning rod, which is rotatably mounted inside the annular baffle, and the end of the cleaning rod is fixedly connected to the end of the transmission shaft, and the other end of the cleaning rod is fixedly mounted with a cleaning scraper, which is rotatably mounted on the top surface of the filter plate through the cooperation of the cleaning rod and fits with its top surface.

[0011] Preferably, the slots on both sides of the annular retaining frame are through-opened, and collection boxes are inserted into the outer sides of the slots. Sealing gaskets are provided between the collection boxes and the inner walls of the slots, and the installation position of the collection boxes remains flush with the filter plate.

[0012] The present invention also discloses a waste gas purification method of a post-processing device for printing and dyeing waste gas, which specifically comprises the following steps:

[0013] S1. Exhaust gas introduction: First, the exhaust gas is introduced into the tank body through the exhaust gas inlet, and the introduced exhaust gas can move upward. Then, the cleaning liquid is sprayed out through the operation of the water spray disc. During the process of contact with the exhaust gas, the particulate matter inside the exhaust gas is adsorbed. The exhaust gas after the cleaning liquid can continue to contact the chassis frame upward, and then enter the filler disc through the discharge port opened at the bottom thereof to react with the filler inside the filler disc. At the same time, by opening the pump body, the reaction liquid inside the liquid storage tank is filled into the water pass disc, so that the reaction liquid is evenly sprayed inside the filler disc to contact the filler, so that the exhaust gas is fully in contact with the filler containing the reaction liquid, and the pollutants inside the filler are desorbed through reaction and absorption. The gas after the reaction with the filler can be discharged through the exhaust pipe;

[0014] S2. Liquid recovery: After the reaction liquid is introduced into the filling tray through the water-passing tray, as the exhaust gas is continuously purified and the reaction liquid is continuously introduced, the overflowed reaction liquid can pass through the filter rack and flow downward along the several drainage ports provided in the chassis frame until it passes through the annular baffle and flows into the recovery rack. After being filtered by the filter plate, it flows back into the liquid storage tank through the recovery pipe to achieve filtration and recovery of the reaction liquid.

[0015] S3. Cleaning: After the equipment has been used for a cycle, debris carried by the flow of the reaction liquid will remain in the filter frame inside the filler tray and the inside of the filter plate. During cleaning, the operation of the drive motor can drive the large gear to run through the cooperation of the drive crawler and the small gear assembly at its end. The large gear at the bottom of the filler tray makes the filler tray rotate inside the outer disc frame and the chassis frame through the cooperation of the annular frame fixed on the outside and the annular slide. During the rotation, several filter frames installed on the outside can fit together with the cleaning brushes installed on the top surfaces of several fixed plates, thereby brushing off the debris remaining inside the filter frame. At the same time, when the large gear at the bottom of the filler tray runs, it can also drive the cleaning rod installed in rotation inside the annular retaining frame to run. The rotation of the cleaning rod can drive the cleaning scraper fixed at its end to rotate on the top surface of the filter plate, scraping off the impurities accumulated on its surface, so that it falls along the slot until it falls into the corresponding collection box.

[0016] Preferably, during the cleaning process of the cleaning assembly, the debris brushed off can fall downward into the collection tray through the cooperation of the annular baffle, and avoid falling into the recovery rack.

[0017] Beneficial effects

[0018] The present invention provides a post-processing device and purification method for printing and dyeing waste gas. Compared with the existing technology, it has the following beneficial effects:

[0019] (1) The post-processing device and purification method of the printing and dyeing waste gas, through the arrangement of the cleaning component and the scraper component, when the equipment needs maintenance, the operation of the transmission component can drive the large gear and the transmission shaft at the bottom thereof to operate, so that the filler plate can be rotated through the cooperation of the annular frame fixedly installed on the outside and the annular slide. During the rotation, several filter frames on the outside thereof can fit together with the cleaning brushes installed on the top surface of several fixed plates to scrape and brush off the residual debris. At the same time, when the large gear drives the cleaning rod to operate through the transmission shaft, it can also drive the cleaning scraper to rotate on the top surface of the filter plate to perform cleaning operations until the scraped debris falls into the corresponding collection box along the slot, ensuring the purification method of the equipment while improving the convenience of maintenance and cleaning of the equipment.

[0020] (2) The post-processing device and purification method of the printing and dyeing waste gas is provided with an annular baffle. When the cleaning component is in the process of cleaning, the brushed debris can fall down to the inside of the collection tray through the cooperation of the annular baffle, and avoid falling into the inside of the recovery rack. Therefore, the annular baffle can achieve a blocking effect by filtering with the filter plate, and avoid the debris from falling into the inside of the recovery rack and affecting the subsequent recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Schematic diagram of cross-section structure;

[0023] Figure 3 This is a schematic diagram of the enlarged structure of point A of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the collection component of the present invention;

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of cross-section structure;

[0026] Figure 6 This is a schematic diagram of the enlarged structure of point B of the present invention;

[0027] Figure 7 This is a schematic diagram of the cleaning component structure of the present invention;

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of cross-section structure;

[0029] Figure 9 This is a schematic diagram of the enlarged structure of point C of the present invention;

[0030] Figure 10It is a schematic cross-sectional view of the outer chassis frame and the chassis frame of the present invention.

[0031] In the figure: 1. tank body; 101. liquid storage tank; 102. pump body; 103. exhaust pipe; 104. sealing door; 2. collecting tray; 3. recovery rack; 301. positioning plate; 302. recovery pipe; 303. annular baffle; 304. water spray tray; 305. cleaning rod; 3051. cleaning scraper; 306. filter plate; 307. notch; 308. collecting box; 4. outer disc rack; 401. chassis rack; 402. drain port; 403. annular chute; 404. fixing plate; 405. cleaning brush; 5. positioning block; 501. support spring; 502. connecting rod; 6. water tray; 7. stuffing tray; 701. filter rack; 8. drive motor; 801. drive track; 9. small gear assembly; 10. large gear; 11. transmission shaft. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-10 The present invention provides two technical solutions, specifically including the following embodiments:

[0034] Example 1:

[0035] A post-processing device for printing and dyeing waste gas, comprising a tank body 1, an exhaust gas inlet is provided at the lower side of the tank body 1, a liquid storage tank 101 and a pump body 102 are fixedly installed on the side of the tank body 1, an exhaust pipe 103 is fixedly installed on the top surface of the tank body 1, a top cover is provided on the top surface of the tank body 1 for filling and maintenance operations, the top cover and the tank body 1 are connected as a whole by a threaded manner, a filling tray 7 is provided inside the tank body 1, a plurality of filter frames 701 are fixedly installed inside the filling tray 7, a cleaning assembly is provided on the outside of the filling tray 7, and the cleaning assembly includes an outer tray frame 4 and a bottom tray frame 40 1, the chassis frame 401 is fixedly installed inside the tank body 1, and positioning pieces are fixedly installed on both sides of the top surface of the outer frame 4, and the positioning pieces on both sides are fixedly installed on both sides of the inside of the tank body 1, and an annular slide 403 is provided on the inner side of the outer frame 4 and the chassis frame 401. The outer side of the filling plate 7 is fixedly installed with an annular frame, and is rotatably installed inside the outer frame 4 and the chassis frame 401 through the annular frame. Several drainage ports 402 are symmetrically opened inside the outer frame 4, and the interiors of the several drainage ports 402 are fixedly installed with fixed plates 404. The top surfaces of the several fixed plates 404 are fixed with a plurality of fixed plates 404. A cleaning brush 405 is fixedly installed, a transmission assembly for driving is provided at the bottom of the filling tray 7, a collecting assembly is provided at the bottom of the chassis frame 401, the transmission assembly includes a large gear 10, the large gear 10 is fixedly installed at the bottom of the filling tray 7, and a transmission shaft 11 is fixedly installed at the bottom thereof, a small gear assembly 9 is provided at the bottom of the chassis frame 401, the small gear assembly 9 is composed of a small gear and a transmission roller, the end of the transmission roller is connected to the driving crawler 801, and is used to drive the small gear that meshes with the large gear 10 to run, and the small gear assembly 9 and the large gear 10 mesh with each other, the tank A driving motor 8 is fixedly installed on the inner side of the body 1, and a driving track 801 for transmission is rotatably connected between the output end of the driving motor 8 and the pinion assembly 9. The chassis frame 401 is conical in shape, and a distance is left between the inner side of the chassis frame 401 and the filling tray 7. Several cleaning brushes 405 are installed to fit together with the outer sides of several filter frames 701 installed inside the filling tray 7, and a sealing gasket is fixedly installed between the annular frame fixedly installed on the outside of the filling tray 7 and the annular slide groove 403. The outer disc frame 4 fits together with the chassis frame 401 through the cooperation of the positioning pieces on both sides of the top surface.

[0036] In the embodiment of the present invention, the positioning member includes a positioning block 5, which is fixedly installed on the inner side of the tank body 1, and a supporting spring 501 is fixedly installed on the bottom of the positioning block 5, and a connecting rod 502 is fixedly installed on the other end of the supporting spring 501, and the connecting rod 502 is fixedly installed on one side of the top surface of the outer disc frame 4 and fixedly connected, and a water-passing tray 6 is fixedly installed on the top surface of the outer disc frame 4, and the water-passing tray 6 and the pump body 102 installed on the outside of the tank body 1 are connected to each other through a hose, and the collecting assembly includes a recovery rack 3, and a positioning plate 301 is fixedly installed on the bottom of the recovery rack 3, and is fixedly installed on the inside of the tank body 1 through the positioning plate 301, and an annular retaining frame 303 is fixedly installed between the top surface of the recovery rack 3 and the chassis frame 401, and a water spraying tray 304 is fixedly installed on the bottom of the positioning plate 301, and a recovery pipe 302 is fixedly installed inside the positioning plate 301. The cleaning rod 305 is fixedly mounted on the inner side of the baffle 303, and the cleaning rod 305 is fixedly mounted on the inner side of the baffle 303. The cleaning rod 305 is fixedly connected to the end of the transmission shaft 11, and the cleaning scraper 3051 is fixedly mounted on the other end of the cleaning rod 305. The cleaning scraper 3051 is rotatably mounted on the top surface of the filter plate 306 through the cooperation of the cleaning rod 305 and fits with the top surface of the filter plate 306. The cleaning rod 305 is fixedly mounted on the inner side of the baffle 303, and the cleaning scraper 3051 is fixedly mounted on the top surface of the filter plate 306 through the cooperation of the cleaning rod 305. The cleaning scraper 3051 is rotated and fitted with the top surface of the filter plate 306. The cleaning rod 305 is fixedly mounted on the inner side of the baffle 303, and the cleaning scraper 3051 is fixedly mounted on the top surface of the filter plate 306 and fits with the top surface of the filter plate 306. The cleaning rod 305 is fixedly mounted on the inner side of the baffle 303, and the cleaning scraper 3051 is fixedly mounted on the top surface of the filter plate 306 through the cooperation of the cleaning rod 305. The cleaning scraper 3051 is rotated and fits with the top surface of the filter plate 306. The cleaning scrapers 307 on both sides of the inner side of the annular baffle 303 are through-opened, and the outer sides of the cleaning rod 307 are inserted with collection boxes 308. Sealing gaskets are provided between the collection box 308 and the inner wall of the cleaning rod 307. The installation position of the collection box 308 is flush with the filter plate 306.

[0037] The embodiment of the present invention further discloses a waste gas purification method of a post-processing device for printing and dyeing waste gas, which specifically includes the following steps:

[0038] S1. Exhaust gas introduction: First, the exhaust gas is introduced into the tank body 1 through the exhaust gas inlet, and the introduced exhaust gas can move upward. Then, the cleaning liquid is sprayed out through the operation of the water spray disc 304. During the process of contact with the exhaust gas, the particulate matter inside the exhaust gas is adsorbed. The exhaust gas after the cleaning liquid can continue to contact the chassis frame 401 upward, and then enter the filling disc 7 through the discharge port 402 opened at the bottom thereof to react with the filler inside the filling disc 7. At the same time, by opening the pump body 102, the reaction liquid inside the liquid storage tank 101 is filled into the water pass disc 6, so that the reaction liquid is evenly sprayed inside the filling disc 7 to contact the filler, so that the exhaust gas is fully in contact with the filler containing the reaction liquid, and the pollutants inside the filler are desorbed through reaction and absorption. The gas after the reaction with the filler can be discharged through the exhaust pipe 103;

[0039] S2. Liquid Recovery: After the reaction liquid is introduced into the filling tray 7 through the water-passing tray 6, as the exhaust gas is continuously purified and the reaction liquid is continuously introduced, the overflowed reaction liquid can pass through the filter frame 701 and flow downward along the plurality of drain ports 402 provided in the chassis frame 401 until it passes through the annular baffle 303 and flows into the recovery frame 3. After being filtered by the filter plate 306, the reaction liquid flows back into the liquid storage tank 101 through the recovery pipe 302 to achieve filtration and recovery of the reaction liquid.

[0040] S3, cleaning: After the equipment has been used for a cycle, the filter frame 701 inside the filling tray 7 and the filter plate 306 will have debris left over from the flow of the reaction liquid. During cleaning, the driving motor 8 can drive the large gear 10 to run through the cooperation of the driving crawler 801 at its end and the small gear assembly 9. The large gear 10 at the bottom of the filling tray 7 is operated to make the filling tray 7 rotate inside the outer disc frame 4 and the chassis frame 401 through the cooperation of the annular frame fixed on the outside and the annular chute 403. During the rotation, several filter frames 701 installed on the outside can cooperate with several cleaning frames installed on the top surface of the fixed plate 404. The brushes 405 fit together to brush off the debris remaining inside the filter frame 701. At the same time, when the large gear 10 at the bottom of the filling plate 7 runs, it can simultaneously drive the cleaning rod 305 installed in rotation inside the annular retaining frame 303 to run. The rotation of the cleaning rod 305 can drive the cleaning scraper 3051 fixed at its end to rotate on the top surface of the filter plate 306, scraping off the impurities accumulated on its surface, so that they fall along the slot 307 until they fall into the corresponding collection box 308. During the cleaning process of the cleaning component, the brushed debris can fall downward into the collection plate 2 through the cooperation of the annular retaining frame 303, avoiding falling into the recovery rack 3.

[0041] Example 2:

[0042] Based on Example 1, different from Example 1, a sealing door 104 is rotatably installed on the side of the tank body 1, and the opening position of the sealing door 104 is kept flush with the installation position of the filling tray 7, which is convenient for filling and manual cleaning operations. The outer side of the sealing door 104 and the tank body 1 remain sealed when closed, effectively avoiding leakage of exhaust gas.

[0043] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A post-processing device for printing and dyeing waste gas, comprising a tank body (1), an exhaust gas inlet being provided at the lower side of the tank body (1), a liquid storage tank (101) and a pump body (102) being fixedly mounted on the side of the tank body (1), an exhaust pipe (103) being fixedly mounted on the top surface of the tank body (1), and a filling tray (7) being provided inside the tank body (1), characterized in that: Several filter screen frames (701) are fixedly installed inside the filling tray (7), and a cleaning component is provided on the outside of the filling tray (7); The cleaning component comprises an outer disc frame (4) and a chassis frame (401), the chassis frame (401) is fixedly mounted inside the tank body (1), positioning members are fixedly mounted on both sides of the top surface of the outer disc frame (4), and the positioning members on both sides are respectively fixedly mounted on both sides of the inside of the tank body (1), an annular slide groove (403) is provided on the inner sides of the outer disc frame (4) and the chassis frame (401), an annular frame is fixedly mounted on the outer side of the filling plate (7), and the filling plate (7) is rotatably mounted inside the outer disc frame (4) and the chassis frame (401), a plurality of drain ports (402) are symmetrically provided inside the outer disc frame (4), a plurality of fixed plates (404) are fixedly mounted inside the plurality of drain ports (402), a cleaning brush (405) is fixedly mounted on the top surfaces of the plurality of fixed plates (404), a transmission assembly for driving is provided at the bottom of the filling plate (7), and a collecting assembly is provided at the bottom of the chassis frame (401); The transmission assembly includes a large gear (10), the large gear (10) is fixedly mounted on the bottom of the filling plate (7), and a transmission shaft (11) is fixedly mounted on the bottom of the large gear (10), a small gear assembly (9) is provided at the bottom of the chassis frame (401), and the small gear assembly (9) and the large gear (10) are meshed with each other, a driving motor (8) is fixedly mounted on the inner side of the tank body (1), and a driving crawler (801) for transmission is rotatably connected between the output end of the driving motor (8) and the small gear assembly (9); The collecting assembly comprises a recovery rack (3), a positioning plate (301) is fixedly mounted on the bottom of the recovery rack (3), and the recovery rack is fixedly mounted inside the tank body (1) through the positioning plate (301), an annular retaining frame (303) is fixedly mounted between the top surface of the recovery rack (3) and the chassis frame (401), a water spraying disc (304) is fixedly mounted on the bottom of the positioning plate (301), a recovery pipe (302) is fixedly mounted inside the positioning plate (301), and two inner sides of the annular retaining frame (303) are fixedly mounted. A notch (307) is provided on the side, a filter plate (306) is fixedly installed inside the notch (307), a scraper assembly is provided on the top surface of the filter plate (306), the notches (307) provided on both sides of the inside of the annular retaining frame (303) are through-opened, and a collection box (308) is inserted into the outside of the notch (307), a sealing gasket is provided between the collection box (308) and the inner wall of the notch (307), and the installation position of the collection box (308) is kept flush with the filter plate (306); The scraper assembly includes a cleaning rod (305), the cleaning rod (305) is rotatably mounted inside the annular retaining frame (303), the end of the cleaning rod (305) is fixedly connected to the end of the transmission shaft (11), and the other end of the cleaning rod (305) is fixedly mounted with a cleaning scraper (3051), and the cleaning scraper (3051) is rotatably mounted on the top surface of the filter plate (306) through the cooperation with the cleaning rod (305) and is in contact with the top surface of the filter plate (306).

2. The post-processing device for printing and dyeing waste gas according to claim 1, characterized in that: The chassis frame (401) is conical in shape, and a distance is left between the inner side of the chassis frame (401) and the filling plate (7). A plurality of cleaning brushes (405) are installed so as to fit in with the outer sides of a plurality of filter frames (701) installed inside the filling plate (7). A sealing gasket is fixedly installed between the annular frame fixedly installed on the outer side of the filling plate (7) and the annular slide groove (403). The outer plate frame (4) fits in with the chassis frame (401) through the cooperation of positioning pieces on both sides of the top surface.

3. The post-processing device for printing and dyeing waste gas according to claim 1, characterized in that: The positioning member includes a positioning block (5), the positioning block (5) is fixedly mounted on the inner side of the tank body (1), a support spring (501) is fixedly mounted on the bottom of the positioning block (5), a connecting rod (502) is fixedly mounted on the other end of the support spring (501), and the connecting rod (502) is fixedly mounted on one side of the top surface of the outer disc frame (4) and fixedly connected.

4. The post-processing device for printing and dyeing waste gas according to claim 3, characterized in that: A water-passing tray (6) is fixedly mounted on the top surface of the outer tray frame (4), and the water-passing tray (6) and a pump body (102) mounted outside the tank body (1) are connected to each other via a hose.

5. A method for purifying waste gas from a post-processing device for printing and dyeing waste gas, characterized in that: The post-processing device for printing and dyeing waste gas according to claim 4 specifically comprises the following steps: S1. Exhaust gas introduction: First, the exhaust gas is introduced into the tank body (1) through the exhaust gas inlet, and the introduced exhaust gas can move upward, and then the cleaning liquid is sprayed out by the operation of the water spray disc (304), so that the particulate matter inside the exhaust gas is adsorbed during the process of contact with the exhaust gas. The exhaust gas after the cleaning liquid can continue to contact the chassis frame (401) upward, and then enter the filling disc (7) through the discharge port (402) opened at the bottom thereof to react with the filling inside the filling disc. At the same time, by opening the pump body (102), the reaction liquid inside the liquid storage tank (101) is filled into the water pass disc (6), so that the reaction liquid is evenly sprayed inside the filling disc (7) to contact the filling, so that the exhaust gas is fully in contact with the filling containing the reaction liquid, and the pollutants inside the filling are desorbed through reaction and absorption. The gas after the reaction with the filling can be discharged through the exhaust pipe (103); S2, liquid recovery: After the reaction liquid is introduced into the filling disk (7) through the water-passing disk (6), as the waste gas is continuously purified and the reaction liquid is continuously introduced, the overflowed reaction liquid can pass through the filter frame (701) and flow downward along the plurality of drain ports (402) provided in the chassis frame (401), until it passes through the annular retaining frame (303) and flows into the recovery frame (3), and then is filtered through the filter screen (306) and flows back into the liquid storage tank (101) through the recovery pipe (302) to achieve filtration and recovery of the reaction liquid; S3. Cleaning: After the equipment has been used for a cycle, debris carried by the reaction liquid will remain inside the filter frame (701) and the filter plate (306) inside the filling plate (7). During cleaning, the driving motor (8) can drive the large gear (10) to run through the cooperation of the driving crawler (801) and the small gear assembly (9) at its end. The large gear (10) at the bottom of the filling plate (7) is operated to make the filling plate (7) rotate inside the outer plate frame (4) and the chassis frame (401) through the cooperation of the annular frame fixed on the outside and the annular chute (403). During the rotation, the outer plate frame (401) is fixed on the outside. The plurality of filter racks (701) can fit together with the cleaning brushes (405) installed on the top surfaces of the plurality of fixed plates (404), thereby brushing off the debris remaining inside the filter rack (701). At the same time, when the large gear (10) at the bottom of the filling plate (7) runs, it can simultaneously drive the cleaning rod (305) installed inside the annular retaining frame (303) to rotate. The rotation of the cleaning rod (305) can drive the cleaning scraper (3051) fixed at its end to rotate on the top surface of the filter plate (306), scraping off the impurities accumulated on the surface thereof, so that they fall along the notch until they fall into the corresponding collection box (308).

6. The waste gas purification method of the post-processing device for printing and dyeing waste gas according to claim 5, characterized in that: During the cleaning process of the cleaning assembly, debris brushed off can fall downward into the collection tray (2) through the cooperation of the annular retaining frame (303), and avoid falling into the recovery frame (3).

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