Waste gas filtering treatment device and method for incinerator

Abstract

The invention relates to the technical field of waste gas treatment, in particular to a waste gas filtering treatment device and method for an incinerator. The waste gas filtering treatment device for the incinerator comprises a waste gas filtering outer shell, a spraying dust removal assembly, a filtering assembly, a linkage assembly, a cleaning assembly and a scraping assembly, the waste gas filtering outer shell comprises an outer shell body, a waste gas inlet pipe and a waste gas outlet pipe, and waste gas of water mist sprayed out of a dust removal spray head passes through a filtering circular plate; the waste gas passing through the multiple filtering holes in the filtering circular plate is purified, the induced draft fan is started to enable the purified waste gas to flow into the exhaust pipe through the gas outlet pipe to be exhausted, and therefore the effect of filtering the waste gas of the incinerator is achieved, and the waste gas can be further filtered through the multiple filtering holes in the filtering circular plate; and dust and particulate matter in the waste gas can be intercepted, and residual dust and particulate matter in the waste gas can be prevented from passing through.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and particularly relates to an exhaust gas filtration and treatment device and a treatment method for an incinerator. Background Art

[0002] An incinerator is a device used to treat waste, which converts waste into ash, gas and waste heat through high-temperature combustion. Incinerators are usually used to treat various types of waste such as municipal waste, industrial waste, medical waste and biomass. In order to reduce the impact of waste smoke on the environment, incinerators are usually equipped with waste gas treatment devices to purify and treat pollutants in the waste gas. At present, the filter components in the waste gas treatment device are prone to accumulate dust and particulate matter during long-term use, resulting in a decrease in filtration efficiency. Summary of the Invention

[0003] Based on this, it is necessary to provide an exhaust gas filtration and treatment device and a treatment method for an incinerator to solve at least one of the technical problems mentioned in the above background art.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An exhaust gas filtration and treatment device for an incinerator includes an exhaust gas filtration outer shell, a spray dust removal component, a filter component, a linkage component, a cleaning component and a scraping component. The exhaust gas filtration outer shell includes a shell body, an exhaust gas inlet pipe and an outlet pipe. An outer shell inner cavity is formed in the shell body. An air inlet hole is formed in the side wall of the shell body, and the air inlet hole is communicated with the outer shell inner cavity. The exhaust gas inlet pipe is fixedly installed on the side wall of the shell body and is communicated with the air inlet hole. An air outlet hole is formed in the side wall of the shell body away from the exhaust gas inlet pipe, and the air outlet hole is communicated with the outer shell inner cavity. The outlet pipe is fixedly installed on the side wall of the shell body away from the exhaust gas inlet pipe and is communicated with the air outlet hole. The spray dust removal component is fixedly installed on the top of the shell body. Part of the filter component is installed in the shell body, and the other part is installed on the outer side wall of the shell body on the side away from the exhaust gas inlet pipe. The linkage component is installed on one side wall of the outer shell inner cavity, and the linkage component is located on the side of the filter component close to the exhaust gas inlet pipe. The cleaning component is fixedly installed at the bottom of the outer shell inner cavity, and the scraping component is fixedly installed on the linkage component.

[0006] Preferably, a sewage drainage groove is formed at the bottom of the shell body, and the sewage drainage groove is communicated with the outer shell inner cavity. A sewage drain pipe is fixedly installed at the bottom of the sewage drainage groove. A filter installation plate is fixedly installed on the side wall of the outer shell inner cavity. A circular filter installation cavity is formed in the middle of the filter installation plate. Two vertical limit plates are fixedly installed on the side wall of the filter installation plate away from the outlet pipe, and the two vertical limit plates are symmetrically arranged. A limit ring is fixedly installed on the side wall of the filter installation cavity away from the exhaust gas inlet pipe.

[0007] Preferably, the spray dust removal assembly includes a dust removal water tank and a plurality of dust removal nozzles. The dust removal water tank is fixedly installed at the top of the outer shell, and the plurality of dust removal nozzles are fixedly installed at the bottom of the dust removal water tank. The bottom of the dust removal nozzles penetrates through the top wall of the outer shell and extends into the inner cavity of the outer shell.

[0008] Preferably, the filtering assembly includes a driving motor, a driving connecting column, a driving connecting rod, two driving rotating plates, a plurality of lateral resisting springs, a filtering circular plate and a missing gear. The driving motor is fixedly installed on the outer side wall of the outer shell on the side away from the waste gas inlet pipe, and the driving motor penetrates through the side wall of the outer shell and extends into the inner cavity of the outer shell. The driving connecting column is fixedly installed on the output shaft of the driving motor, and the driving connecting column is located in the inner cavity of the outer shell. The driving connecting rod is fixedly installed at the end of the driving connecting column away from the driving motor, and the end of the driving connecting rod away from the driving motor extends through the filtering installation cavity. The two driving rotating plates are fixedly installed on the outer side wall of the driving connecting rod. The plurality of lateral resisting springs are circularly arrayed on the side wall of the limiting ring away from the driving motor. The filtering circular plate is fixedly installed at the end of the plurality of lateral resisting springs away from the limiting ring, and the side wall of the filtering circular plate is slidably arranged on the side wall of the filtering installation cavity. A clamping sliding groove is formed in the middle of the filtering circular plate. The filtering circular plate is provided with a plurality of filtering holes penetrating through both side walls. The filtering circular plate is slidably arranged on the driving connecting rod and the two driving rotating plates through the clamping sliding groove, and the side wall of the filtering circular plate away from the driving motor abuts against the two vertical limiting plates. The missing gear is fixedly installed at the end of the driving connecting rod away from the driving connecting column.

[0009] Preferably, the linkage assembly includes a square support cylinder, a linkage return spring, a square anti - detachment block, a square connecting rod, a linkage abutting block and a linkage rack. The square support cylinder is fixedly installed on one side wall of the inner cavity of the outer shell. One end of the linkage return spring is fixedly installed on the inner side wall of the square support cylinder away from the outer shell, and the linkage return spring is located inside the square support cylinder. The square anti - detachment block is fixedly installed at the other end of the linkage return spring, and the square anti - detachment block is slidably arranged on the inner side wall of the square support cylinder. A reciprocating telescopic groove is formed in the side wall of the square support cylinder away from the outer shell. One end of the square connecting rod is fixedly installed on the square anti - detachment block, and the other end passes through the reciprocating telescopic groove and extends to the outside of the square support cylinder, and the square connecting rod is slidably arranged in the reciprocating telescopic groove. The linkage abutting block is fixedly installed at the end of the square connecting rod away from the square anti - detachment block. The linkage rack is fixedly installed on the side wall of the linkage abutting block away from the square connecting rod, and the linkage rack meshes with the missing gear. The bottom surface of the linkage rack is at the same height as the bottom surface of the linkage abutting block.

[0010] Preferably, the cleaning component includes a cleaning support plate and a cleaning block. The cleaning support plate is fixedly installed at the bottom of the inner cavity of the housing. The bottom of the linkage rack slides and abuts against the top of the cleaning support plate. The cleaning block is fixedly installed on a side wall of the cleaning support plate away from the exhaust gas inlet pipe, and the side wall of the cleaning block away from the cleaning support plate abuts against the filter circular plate. The cleaning block is used to clean the filter circular plate. Two symmetrical cleaning inclined surfaces are formed on the side wall of the cleaning block facing the filter circular plate, and the distance between the two cleaning inclined surfaces gradually increases in the direction of the cleaning support plate.

[0011] Preferably, the scraping component includes a moving scraping block, a cleaning air bag and a cleaning scraper. The moving scraping block is fixedly installed at the bottom of the linkage abutting block near the filter circular plate. A dust collection cavity penetrating the bottom is formed inside the moving scraping block. A wedge-shaped groove is formed on a side wall of the moving scraping block facing the cleaning block, and the wedge-shaped groove communicates with the dust collection cavity. A first guiding inclined surface is formed on a side wall of the dust collection cavity away from the wedge-shaped groove, and the distance between the first guiding inclined surface and the wedge-shaped groove gradually increases in the vertically downward direction. A second guiding inclined surface is formed on the side wall of the moving scraping block away from the cleaning block, and the distance between the second guiding inclined surface and the cleaning block gradually decreases in the vertically downward direction. The cleaning air bag is fixedly installed at the top of the linkage abutting block near the filter circular plate. An air bag through groove penetrating to the inside of the cleaning air bag is formed at the bottom of the cleaning air bag. A linkage through groove penetrating to the bottom is formed at the top of the linkage abutting block near the filter circular plate, and the linkage through groove communicates with the air bag through groove. A scraping block through groove is formed at the top of the moving scraping block, and the bottom of the scraping block through groove communicates with the dust collection cavity, and the top of the scraping block through groove communicates with the linkage through groove. The cleaning scraper is rotatably installed at the bottom of the moving scraping block, and the cleaning scraper is located on a side wall of the moving scraping block near the cleaning block. The cleaning scraper is located on one side of the sewage drainage groove.

[0012] Preferably, a circular ring boss protrudes from a side wall of the filter circular plate away from the driving motor. Two symmetrical abutting inclined surfaces are formed at one end of the linkage abutting block facing the filter circular plate, and the distance between the two abutting inclined surfaces gradually decreases in the direction of the filter circular plate. An induced draft fan is fixedly installed at one end of the air outlet pipe away from the housing shell, and an exhaust pipe is installed at the top of the induced draft fan.

[0013] Preferably, a plurality of flipping abutting blocks are rotatably installed at the bottom of a side wall of the filter mounting plate away from the driving motor through torsion springs. A through groove is formed at one end of the cleaning scraper close to the filter mounting plate.

[0014] The present invention also provides a method for filtering and treating exhaust gas for an incinerator, which is applied to the exhaust gas filtering and treating device for an incinerator as described above, and includes the following steps:

[0015] Step 1: Connect the exhaust gas generated in the incinerator to the exhaust gas inlet pipe through a pipeline, and discharge the exhaust gas into the inner cavity of the housing through the exhaust gas inlet pipe;

[0016] Step 2: Use several dust removal nozzles to spray the water in the dust removal water tank downward, so that the water is mixed and precipitated with the incoming waste gas, and then use the filter circular plate to filter the waste gas again. Start the induced draft fan to extract the filtered gas from the inner cavity of the housing;

[0017] Step 3: Start the drive motor to rotate the filter circular plate. The cleaning block fits against the filter circular plate to wipe and clean the rotating filter circular plate;

[0018] Step 4: When the drive motor starts, the missing gear rotates. The rotation of the missing gear drives the linkage rack to reciprocate. The reciprocating movement of the linkage rack drives the moving scraping block to reciprocate to clean the cleaning block;

[0019] Step 5: The reciprocating movement of the moving scraping block drives the cleaning scraper to reciprocate, scraping the dust and particulate matter at the bottom of the inner cavity of the housing into the sewage drainage groove for discharge.

[0020] The beneficial effects of the present invention compared with the prior art are as follows:

[0021] 1. The waste gas sprayed with water mist by the dust removal nozzles passes through the filter circular plate again. The waste gas after passing through several filter holes on the filter circular plate is purified. Start the induced draft fan to make the purified waste gas flow through the outlet pipe to the exhaust pipe for discharge, thereby achieving the effect of filtering and treating the waste gas of the incinerator. The several filter holes on the filter circular plate can further filter the waste gas, and can also intercept the dust and particulate matter in the waste gas, preventing the residual dust and particulate matter in the waste gas from passing through.

[0022] 2. The rotation of the filter circular plate can contact the water in the inner cavity of the housing, so that the water takes away the dust and particulate matter attached to the side wall of the filter circular plate far from the outlet pipe, achieving a cleaning effect. During the rotation of the filter circular plate, the side wall of the cleaning block far from the cleaning support plate fits against the filter circular plate to wipe and clean the filter circular plate, thereby improving the cleaning effect of the filter circular plate, preventing dust and particulate matter from accumulating on the filter circular plate all the time and blocking the filter holes, resulting in a reduction in the filtering effect. By cleaning the filter circular plate in time, the filtering effect is improved and the filtering efficiency is increased.

[0023] 3. The moving scraping block can clean the cleaning block, preventing a large amount of dust and particulate matter from accumulating on the cleaning block after long-term use without cleaning, affecting the cleaning effect of the cleaning block, and thus affecting the filtering effect of the filter circular plate.

[0024] 4. By inertia and vibration, the dust and particulate matter attached to the filter circular plate are shaken off, further improving the filtering efficiency on the filter circular plate, and can also shake off some of the water in the filter holes to prevent the water from blocking the filter holes and affecting the filtering effect. Description of the Drawings

[0025] Figure 1Structural schematic diagram of an embodiment of the present invention;

[0026] Figure 2 Internal structural schematic diagram of an embodiment of the present invention;

[0027] Figure 3 Structural schematic diagram of a filtering component of an embodiment of the present invention;

[0028] Figure 4 Structural schematic diagram of the filtering component of an embodiment of the present invention from another angle;

[0029] Figure 5 Structural schematic diagram of a linkage component and a cleaning component of an embodiment of the present invention;

[0030] Figure 6 Cross-sectional structural schematic diagram of a linkage component and a cleaning component of an embodiment of the present invention;

[0031] Figure 7 Structural schematic diagram of a scraping component and a linkage abutting block of an embodiment of the present invention;

[0032] Figure 8 Cross-sectional structural schematic diagram of a scraping component and a linkage abutting block of an embodiment of the present invention;

[0033] Figure 9 is Figure 3 Partial enlarged view of position A in

[0034] In the figure: 10, waste gas filtration housing; 20, spray dust removal component; 30, filtering component; 40, linkage component; 50, cleaning component; 60, scraping component; 11, housing shell; 12, waste gas inlet pipe; 13, outlet pipe; 111, housing inner cavity; 112, sewage drainage tank; 113, sewage drain pipe; 114, filter mounting plate; 115, filter mounting cavity; 116, vertical limiting plate; 117, limiting ring; 21, dust removal water tank; 22, dust removal nozzle; 31, driving motor; 32, driving connection column; 33, driving connecting rod; 34, driving rotating plate; 35, lateral abutting spring; 36, filtering circular plate; 37, missing gear; 361, engaging chute; 41, square support cylinder; 42, linkage return spring; 43, square anti-disengagement block; 44, square connecting rod; 45, linkage abutting block; 46, linkage rack; 411, reciprocating telescopic groove; 51, cleaning support plate; 52, cleaning block; 521, cleaning inclined surface; 61, moving scraping block; 62, cleaning airbag; 63, cleaning scraper; 611, dust collection cavity; 612, wedge-shaped groove; 613, first guiding inclined surface; 614, second guiding inclined surface; 362, circular ring boss; 451, abutting inclined surface; 14, induced draft fan; 15, exhaust pipe; 118, flipping abutting block; 631, through groove; 363, filtering hole. Detailed implementation mode

[0035] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] Please refer to Figures 1 to 9 , the present invention provides an exhaust gas filtration and treatment device for an incinerator, which includes an exhaust gas filtration outer shell 10, a spray dust removal assembly 20, a filtration assembly 30, a linkage assembly 40, a cleaning assembly 50 and a scraping assembly 60. The exhaust gas filtration outer shell 10 includes a shell housing 11, an exhaust gas inlet pipe 12 and an outlet pipe 13. An outer shell inner cavity 111 is provided in the shell housing 11. An air inlet hole is provided on the side wall of the shell housing 11, and the air inlet hole is communicated with the outer shell inner cavity 111. The exhaust gas inlet pipe 12 is fixedly installed on the side wall of the shell housing 11, and the exhaust gas inlet pipe 12 is communicated with the air inlet hole. An air outlet hole is provided on the side wall of the shell housing 11 away from the exhaust gas inlet pipe 12, and the air outlet hole is communicated with the outer shell inner cavity 111. The outlet pipe 13 is fixedly installed on the side wall of the shell housing 11 away from the exhaust gas inlet pipe 12, and the outlet pipe 13 is communicated with the air outlet hole. The spray dust removal assembly 20 is fixedly installed on the top of the shell housing 11. Part of the filtration assembly 30 is installed in the shell housing 11, and the other part is installed on the outer side wall of the shell housing 11 on the side away from the exhaust gas inlet pipe 12. The linkage assembly 40 is installed on one side wall of the outer shell inner cavity 111, and the linkage assembly 40 is located on the side of the filtration assembly 30 close to the exhaust gas inlet pipe 12. The cleaning assembly 50 is fixedly installed at the bottom of the outer shell inner cavity 111. The scraping assembly 60 is fixedly installed on the linkage assembly 40.

[0039] A sewage drainage groove 112 is formed at the bottom of the outer shell 11, and the sewage drainage groove 112 communicates with the inner cavity 111 of the outer shell. A sewage drain pipe 113 is fixedly installed at the bottom of the sewage drainage groove 112. A filter mounting plate 114 is fixedly installed on the side wall of the inner cavity 111 of the outer shell. A circular filter mounting cavity 115 is formed in the middle of the filter mounting plate 114. Two vertical limiting plates 116 are fixedly installed on the side wall of the filter mounting plate 114 away from the air outlet pipe 13, and the two vertical limiting plates 116 are symmetrically arranged. A limiting ring 117 is fixedly installed on the side wall of the filter mounting cavity 115 away from the waste gas inlet pipe 12.

[0040] The spray dust removal assembly 20 includes a dust removal water tank 21 and a plurality of dust removal nozzles 22. The dust removal water tank 21 is fixedly installed on the top of the outer shell 11. The plurality of dust removal nozzles 22 are fixedly installed at the bottom of the dust removal water tank 21, and the bottom of the dust removal nozzle 22 penetrates through the top wall of the outer shell 11 and extends into the inner cavity 111 of the outer shell.

[0041] The filter assembly 30 includes a driving motor 31, a driving connecting column 32, a driving connecting rod 33, two driving rotating plates 34, a plurality of transverse abutting springs 35, a filter circular plate 36 and a missing gear 37. The driving motor 31 is fixedly installed on the outer side wall of the outer shell 11 away from the waste gas inlet pipe 12, and the driving motor 31 penetrates through the side wall of the outer shell 11 and extends into the inner cavity 111 of the outer shell. The driving connecting column 32 is fixedly installed on the output shaft of the driving motor 31, and the driving connecting column 32 is located in the inner cavity 111 of the outer shell. The driving connecting rod 33 is fixedly installed at one end of the driving connecting column 32 away from the driving motor 31, and one end of the driving connecting rod 33 away from the driving motor 31 extends through the filter mounting cavity 115. The two driving rotating plates 34 are fixedly installed on the outer side wall of the driving connecting rod 33. The plurality of transverse abutting springs 35 are circularly arrayed and installed on the side wall of the limiting ring 117 away from the driving motor 31. The filter circular plate 36 is fixedly installed at one end of the plurality of transverse abutting springs 35 away from the limiting ring 117, and the side wall of the filter circular plate 36 is slidably arranged on the side wall of the filter mounting cavity 115. A clamping chute 361 is formed in the middle of the filter circular plate 36. A plurality of filter holes 363 penetrating through both side walls are formed in the filter circular plate 36. The filter circular plate 36 is slidably arranged on the driving connecting rod 33 and the two driving rotating plates 34 through the clamping chute 361, and the side wall of the filter circular plate 36 away from the driving motor 31 abuts against the two vertical limiting plates 116. The missing gear 37 is fixedly installed at one end of the driving connecting rod 33 away from the driving connecting column 32.

[0042] The linkage component 40 includes a square support cylinder 41, a linkage return spring 42, a square anti - detachment block 43, a square connecting rod 44, a linkage abutting block 45 and a linkage rack 46. The square support cylinder 41 is fixedly installed on a side wall of the inner cavity 111 of the housing. One end of the linkage return spring 42 is fixedly installed on the inner side wall of the square support cylinder 41 away from the housing shell 11, and the linkage return spring 42 is located inside the square support cylinder 41. The square anti - detachment block 43 is fixedly installed on the other end of the linkage return spring 42, and the square anti - detachment block 43 is slidably arranged on the inner side wall of the square support cylinder 41. A reciprocating telescopic groove 411 is formed on the side wall of the square support cylinder 41 away from the housing shell 11. One end of the square connecting rod 44 is fixedly installed on the square anti - detachment block 43, and the other end passes through the reciprocating telescopic groove 411 and extends to the outside of the square support cylinder 41. The square connecting rod 44 is slidably arranged in the reciprocating telescopic groove 411. The linkage abutting block 45 is fixedly installed at the end of the square connecting rod 44 away from the square anti - detachment block 43. The linkage rack 46 is fixedly installed on a side wall of the linkage abutting block 45 away from the square connecting rod 44, and the linkage rack 46 meshes with the missing gear 37. The bottom surface of the linkage rack 46 is at the same height as the bottom surface of the linkage abutting block 45.

[0043] The cleaning component 50 includes a cleaning support plate 51 and a cleaning block 52. The cleaning support plate 51 is fixedly installed at the bottom of the inner cavity 111 of the housing. The bottom of the linkage rack 46 slides and abuts against the top of the cleaning support plate 51. The cleaning block 52 is fixedly installed on a side wall of the cleaning support plate 51 away from the exhaust gas inlet pipe 12, and the side wall of the cleaning block 52 away from the cleaning support plate 51 abuts against the filter circular plate 36. The cleaning block 52 is used to clean the filter circular plate 36. Two symmetric cleaning inclined surfaces 521 are formed on the side wall of the cleaning block 52 facing the filter circular plate 36. The distance between the two cleaning inclined surfaces 521 gradually increases in the direction of the cleaning support plate 51.

[0044] The scraping assembly 60 includes a moving scraping block 61, a cleaning airbag 62 and a cleaning scraper 63. The moving scraping block 61 is fixedly installed at the bottom of one end of the linkage abutting block 45 close to the filter circular plate 36. A dust collection chamber 611 penetrating the bottom is formed inside the moving scraping block 61. A wedge-shaped groove 612 is formed on one side wall of the moving scraping block 61 facing the cleaning block 52, and the wedge-shaped groove 612 communicates with the dust collection chamber 611. A first guiding inclined surface 613 is formed on one side wall of the dust collection chamber 611 away from the wedge-shaped groove 612. The distance between the first guiding inclined surface 613 and the wedge-shaped groove 612 gradually increases in the vertically downward direction. A second guiding inclined surface 614 is formed on the side wall of the moving scraping block 61 away from the cleaning block 52. The distance between the second guiding inclined surface 614 and the cleaning block 52 gradually decreases in the vertically downward direction. The cleaning airbag 62 is fixedly installed at the top of one end of the linkage abutting block 45 close to the filter circular plate 36. An airbag through groove penetrating to the inside of the cleaning airbag 62 is formed at the bottom of the cleaning airbag 62. A linkage through groove penetrating to the bottom is formed at the top of one end of the linkage abutting block 45 close to the filter circular plate 36, and the linkage through groove communicates with the airbag through groove. A scraping block through groove is formed at the top of the moving scraping block 61, and the bottom of the scraping block through groove communicates with the dust collection chamber 611, and the top of the scraping block through groove communicates with the linkage through groove. The cleaning scraper 63 is rotatably installed at the bottom of the moving scraping block 61, and the cleaning scraper 63 is located on one side wall of the moving scraping block 61 close to the cleaning block 52. The cleaning scraper 63 is located on one side of the sewage drainage groove 112.

[0045] A circular ring boss 362 protrudes from one side wall of the filter circular plate 36 away from the driving motor 31. Two symmetric abutting inclined surfaces 451 are formed at one end of the linkage abutting block 45 facing the filter circular plate 36, and the distance between the two abutting inclined surfaces 451 gradually decreases in the direction of the filter circular plate 36. One end of the air outlet pipe 13 away from the outer shell 11 is fixedly installed with an induced draft fan 14, and an exhaust pipe 15 is installed at the top of the induced draft fan 14.

[0046] A plurality of flipping abutting blocks 118 are rotatably installed at the bottom of one side wall of the filter mounting plate 114 away from the driving motor 31 through torsion springs. A through groove 631 is formed at one end of the cleaning scraper 63 close to the filter mounting plate 114.

[0047] For example, the present invention further provides a method for filtering and treating waste gas for an incinerator, which is applied to the waste gas filtering and treating device for an incinerator as described above, and includes the following steps:

[0048] Step 1: Connect the waste gas generated in the incinerator to the waste gas inlet pipe 12 through a pipeline, and discharge the waste gas into the inner cavity 111 of the outer shell through the waste gas inlet pipe 12;

[0049] Step 2: Use a number of dust removal nozzles 22 to spray the water in the dust removal water tank 21 downward, so that the water is mixed and precipitated with the incoming waste gas, and then use the filter circular plate 36 to filter the waste gas again. Start the induced draft fan 14 to extract the filtered gas from the inner cavity 111 of the housing;

[0050] Step 3: Start the drive motor 31 to rotate the filter circular plate 36, and the cleaning block 52 fits against the filter circular plate 36 to wipe and clean the rotating filter circular plate 36;

[0051] Step 4: Start the drive motor 31 to rotate the missing gear 37. The rotation of the missing gear 37 drives the linkage rack 46 to reciprocate. The reciprocating movement of the linkage rack 46 drives the moving scraping block 61 to reciprocate to clean the cleaning block 52;

[0052] Step 5: The reciprocating movement of the moving scraping block 61 drives the cleaning scraper 63 to reciprocate, scraping the dust and particulate matter at the bottom of the inner cavity 111 of the housing into the sewage drainage groove 112 and discharging it.

[0053] In an embodiment, the operator connects the waste gas generated in the incinerator to the waste gas inlet pipe 12 through a pipeline, and discharges the waste gas into the inner cavity 111 of the housing through the waste gas inlet pipe 12. After the waste gas enters the inner cavity 111 of the housing, a number of dust removal nozzles 22 spray the water in the dust removal water tank 21 downward, so that the water mist at the spraying position is mixed with the incoming waste gas, so that the particulate matter in the waste gas contacts the water mist, humidifying the particulate matter in the waste gas. Under the continuous impact of the water mist sprayed by a number of dust removal nozzles 22, the humidified water mist will fall downward to the bottom of the inner cavity 111 of the housing, and then flow into the sewage drain pipe 113 through the sewage drainage groove 112. The operator can connect the sewage drain pipe 113 to the sewage purification equipment, and then connect the water purified by the sewage purification equipment to the dust removal water tank 21, so that the water can circulate reciprocally to prevent waste of water resources. The waste gas passing through the water mist sprayed by the dust removal nozzles 22 is then passed through the filter circular plate 36, and the waste gas after passing through a number of filter holes 363 on the filter circular plate 36 is purified. Start the induced draft fan 14 to make the purified waste gas flow through the outlet pipe 13 into the exhaust pipe 15 and discharge it, so as to achieve the effect of filtering and treating the waste gas of the incinerator.

[0054] A number of filter holes 363 on the filter disk 36 can further filter the waste gas, and can also intercept the dust and particulate matter in the waste gas, preventing the remaining dust and particulate matter in the waste gas from passing through. If the dust and particulate matter that have not been washed down by the water mist are not intercepted and discharged, they are likely to pollute the air. However, through the interception of the filter disk 36, the dust in the waste gas cannot pass through the filter disk 36, and the dust and particulate matter are blocked on the side of the filter disk 36 away from the air outlet pipe 13. During use, due to long-term use, a large amount of dust is likely to accumulate on the side of the filter disk 36 away from the air outlet pipe 13, thus affecting the filtering effect of the filter disk 36. Start the drive motor 31, the drive motor 31 drives the drive connecting column 32 to rotate, the drive connecting column 32 drives the drive connecting rod 33 to rotate, the drive connecting rod 33 drives the two drive rotating plates 34 to rotate, and the drive connecting rod 33 and the two drive rotating plates 34 drive the filter disk 36 to rotate through the engaging chute 361. The rotation of the filter disk 36 can contact the water in the inner cavity 111 of the housing, so that the water can take away the dust and particulate matter attached to the side wall of the filter disk 36 away from the air outlet pipe 13, achieving a cleaning effect. A drain valve is provided in the sewage drain pipe 113. The operator first closes the drain valve, and then opens the drain valve when the water level in the inner cavity 111 of the housing is at the top surface of the cleaning block 52. Moreover, the drainage speed of the drain valve is the same as the total water outlet speed of a number of dust removal nozzles 22, so that the liquid level in the inner cavity 111 of the housing can always be kept near the top surface position of the cleaning block 52. The cleaning block 52 is made of materials such as sponge or cloth. During the rotation of the filter disk 36, the side wall of the cleaning block 52 away from the cleaning support plate 51 fits against the filter disk 36 to wipe and clean the filter disk 36, thereby improving the cleaning effect of the filter disk 36, preventing dust and particulate matter from continuously accumulating on the filter disk 36 and blocking the filter holes 363, resulting in a reduction in the filtering effect. By cleaning the filter disk 36 in a timely manner, the filtering effect is improved and the filtering efficiency is increased.

[0055] In one embodiment, the driving motor 31 rotates to drive the driving connecting column 32 to rotate. The driving connecting column 32 drives the driving connecting rod 33 to rotate. The driving connecting rod 33 drives the missing gear 37 to rotate. The missing gear 37 drives the linkage rack 46 engaged therewith to move away from the square support cylinder 41. The linkage rack 46 drives the linkage abutting block 45 to move away from the square support cylinder 41. The linkage abutting block 45 drives the square connecting rod 44 and the moving scraping block 61 to move. The movement of the square connecting rod 44 drives the square anti-disengagement block 43 to move. The movement of the square anti-disengagement block 43 compresses the linkage return spring 42. The movement of the moving scraping block 61 can move towards the cleaning block 52 and squeeze the cleaning block 52, so that the moving scraping block 61 scrapes off the dust and particulate matter attached to the cleaning block 52 through the wedge-shaped groove 612. The cleaning inclined surface 521 makes it easier for the moving scraping block 61 to clean the cleaning block 52. Two symmetrically arranged scraping inclined surfaces are formed on both side walls of the wedge-shaped groove 612. The distance between the two scraping inclined surfaces gradually increases towards the cleaning block 52, that is, the outer opening wall of the wedge-shaped groove 612 is larger than the inner opening wall, so that dust and particulate matter are more likely to pass through the wedge-shaped groove 612 from the outside. The dust and particulate matter enter the dust collection cavity 611 through the wedge-shaped groove 612. And during the process of the moving scraping block 61 moving towards the cleaning block 52, the dust and particulate matter entering the dust collection cavity 611 will move downward under the guidance of the second guiding inclined surface 614 and be discharged from the bottom of the dust collection cavity 611 and accumulate at the bottom of the inner cavity 111 of the housing, so that the dust and particulate matter are more likely to be discharged through the sewage drainage groove 112. When the moving scraping block 61 moves to the maximum distance, the missing gear 37 is no longer engaged with the linkage rack 46. The linkage return spring 42 releases its elastic force to drive the square anti-disengagement block 43 to move back. The square anti-disengagement block 43 drives the square connecting rod 44 to move back. The square connecting rod 44 drives the linkage abutting block 45 to move back. The linkage abutting block 45 drives the linkage rack 46 and the moving scraping block 61 to move back. When the moving scraping block 61 moves back, the first guiding inclined surface 613 will scrape off the dust and particulate matter from the cleaning block 52 again, and the scraped dust and particulate matter can be guided downward to the bottom of the inner cavity 111 of the housing through the first guiding inclined surface 613. The cleaning block 52 can be cleaned by the moving scraping block 61, preventing a large amount of dust and particulate matter from accumulating on the cleaning block 52 due to long-term use without cleaning, which affects the cleaning effect of the cleaning block 52 and thus affects the filtering effect of the filtering circular plate 36.

[0056] In one embodiment, during the movement of the linkage abutting block 45, the linkage abutting block 45 can abut against the circular ring boss 362 through the abutting inclined surface 451, so that the circular ring boss 362 moves away from the exhaust gas inlet pipe 12. The circular ring boss 362 drives the filter circular plate 36 to slide away from the exhaust gas inlet pipe 12 on the driving connecting rod 33 and the two driving rotating plates 34 through the engaging sliding groove 361. The filter circular plate 36 can compress a plurality of transverse abutting springs 35. When the linkage abutting block 45 moves to the maximum distance, the plurality of transverse abutting springs 35 are compressed to the maximum extent. Subsequently, the linkage abutting block 45 moves in a reset manner to release the plurality of transverse abutting springs 35. The plurality of transverse abutting springs 35 generate elastic force to push the filter circular plate 36 to move in a reset manner until it abuts against the two vertical limiting plates 116 and stops. The dust and particulate matter attached to the filter circular plate 36 are thrown off by inertia and vibration, further improving the filtering efficiency on the filter circular plate 36, and can also eject some moisture in the filter holes 363 to prevent the water from blocking the filter holes 363 and affecting the filtering effect.

[0057] In another embodiment, the liquid level in the inner cavity 111 of the housing is higher than the cleaning airbag 62. During the process of the linkage abutting block 45 abutting against the circular ring boss 362, the driving rotating plate 34 can rotate and squeeze the cleaning airbag 62, so that the liquid in the cleaning airbag 62 flows downward. The dust and particulate matter in the dust collection cavity 611 are carried downward by the liquid flow, improving the downward discharge efficiency of the dust and particulate matter in the dust collection cavity 611 and preventing the dust and particulate matter from accumulating in the dust collection cavity 611 in large quantities.

[0058] In another embodiment, during the movement of the moving scraping block 61, the cleaning scraping plate 63 will be driven to move. When the cleaning scraping plate 63 moves away from the sewage drainage groove 112, the cleaning scraping plate 63 will sequentially abut against a plurality of flipping abutting blocks 118. Since the flipping abutting blocks 118 have flipped to the maximum distance under the action of the torsion springs, the flipping abutting blocks 118 cannot further flip away from the cleaning scraping plate 63, so that the cleaning scraping plate 63 flips towards the sewage drainage groove 112. The inclined flipping of the cleaning scraping plate 63 can make the dust and particulate matter flowing down in the dust collection cavity 611 move obliquely towards the sewage drainage groove 112 for a certain distance. When the moving scraping block 61 moves in a reset manner, it can drive the cleaning scraping plate 63 to move towards the sewage drainage groove 112. When the cleaning scraping plate 63 moves to abut against the flipping abutting block 118, the flipping abutting block 118 can be flipped. The cleaning scraping plate 63 passes over the flipped flipping abutting block 118 through the through groove 631. When the cleaning scraping plate 63 moves towards the sewage drainage groove 112, it can scrape the dust and particulate matter at the bottom of the inner cavity 111 of the housing into the sewage drainage groove 112, improving the discharge efficiency of the dust and particulate matter.

[0059] During installation, the exhaust gas inlet pipe 12 is fixedly installed on the side wall of the outer shell 11, the outlet pipe 13 is fixedly installed on the side wall of the outer shell 11 away from the exhaust gas inlet pipe 12, the dust removal water tank 21 is fixedly installed on the top of the outer shell 11, several dust removal nozzles 22 are fixedly installed on the bottom of the dust removal water tank 21, the driving motor 31 is fixedly installed on the outer side wall of the outer shell 11 on the side away from the exhaust gas inlet pipe 12, the driving connecting column 32 is fixedly installed on the output shaft of the driving motor 31, the driving connecting rod 33 is fixedly installed at one end of the driving connecting column 32 away from the driving motor 31, two driving rotating plates 34 are fixedly installed on the outer side wall of the driving connecting rod 33, several transverse abutting springs 35 are circularly arrayed and installed on the side wall of the limiting ring 117 away from the driving motor 31, the filtering circular plate 36 is fixedly installed at one end of several transverse abutting springs 35 away from the limiting ring 117, and the missing gear 37 is fixedly installed at one end of the driving connecting rod 33 away from the driving connecting column 32.

[0060] The square support cylinder 41 is fixedly installed on one side wall of the inner cavity 111 of the outer shell. One end of the linkage return spring 42 is fixedly installed on the inner side wall of the square support cylinder 41 at the end away from the outer shell 11. The square anti - detachment block 43 is fixedly installed at the other end of the linkage return spring 42. A reciprocating telescopic groove 411 is opened on the side wall of the square support cylinder 41 at the end away from the outer shell 11. The linkage abutting block 45 is fixedly installed at one end of the square connecting rod 44 away from the square anti - detachment block 43. The linkage rack 46 is fixedly installed on one side wall of the linkage abutting block 45 away from the square connecting rod 44. The cleaning support plate 51 is fixedly installed at the bottom of the inner cavity 111 of the outer shell. The cleaning block 52 is fixedly installed on one side wall of the cleaning support plate 51 away from the exhaust gas inlet pipe 12. The moving scraping block 61 is fixedly installed at the bottom of the linkage abutting block 45 near the filtering circular plate 36. The cleaning air bag 62 is fixedly installed at the top of the linkage abutting block 45 near the filtering circular plate 36.

[0061] Beneficial effects: 1. The exhaust gas sprayed with water mist by the dust removal nozzles 22 passes through the filtering circular plate 36, and the exhaust gas after passing through several filtering holes 363 on the filtering circular plate 36 is purified. Starting the induced draft fan 14 enables the purified exhaust gas to flow through the outlet pipe 13 into the exhaust pipe 15 and be discharged, thereby achieving the effect of filtering and treating the exhaust gas of the incinerator. The several filtering holes 363 on the filtering circular plate 36 can further filter the exhaust gas, and can also intercept the dust and particulate matter in the exhaust gas, preventing the residual dust and particulate matter in the exhaust gas from passing through.

[0062] 2. The rotating filter disc 36 can come into contact with the water in the inner cavity 111 of the housing, so that the water can carry away the dust and particulate matter adhering to the side wall of the filter disc 36 away from the air outlet pipe 13, achieving a cleaning effect. During the rotation of the filter disc 36, the side wall of the cleaning block 52 away from the cleaning support plate 51 fits against the filter disc 36 to wipe and clean the filter disc 36, thereby improving the cleaning effect of the filter disc 36, preventing dust and particulate matter from continuously accumulating on the filter disc 36 and blocking the filter holes 363, resulting in a reduction in the filtering effect. By cleaning the filter disc 36 in a timely manner, the filtering effect is improved and the filtering efficiency is increased.

[0063] 3. By moving the scraping block 61, the cleaning block 52 can be cleaned, preventing a large amount of dust and particulate matter from accumulating on the cleaning block 52 due to long-term use without cleaning, which affects the cleaning effect of the cleaning block 52 and thus the filtering effect of the filter disc 36.

[0064] 4. By inertia and vibration, the dust and particulate matter adhering to the filter disc 36 are shaken off, further improving the filtering efficiency on the filter disc 36. It can also shake off some of the water in the filter holes 363 to prevent the water from blocking the filter holes 363 and affecting the filtering effect.

[0065] All possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0066] The above-described embodiments only represent several embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, multiple modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. An exhaust gas filtering and treating device for an incinerator, characterized in that: The invention comprises an exhaust gas filter housing (10), a spray dust removal component (20), a filter component (30), a linkage component (40), a cleaning component (50) and a scraping component (60); the exhaust gas filter housing (10) comprises a housing shell (11), an exhaust gas inlet pipe (12) and an exhaust gas outlet pipe (13); an outer housing shell (11) is provided with an inner housing cavity (111); an air inlet hole is provided on the side wall of the outer housing shell (11), and the air inlet hole is communicated with the inner housing cavity (111); the exhaust gas inlet pipe (12) is fixedly mounted on the side wall of the outer housing shell (11), and the exhaust gas inlet pipe (12) is communicated with the air inlet hole; an air outlet hole is provided on the side wall of the outer housing shell (11) away from the exhaust gas inlet pipe (12), and the air outlet hole is communicated with the inner housing cavity (111); The exhaust pipe (13) is fixedly mounted on a side wall of the outer shell (11) away from the exhaust gas inlet pipe (12), and the exhaust pipe (13) is communicated with the exhaust hole. The spray dust removal component (20) is fixedly mounted on the top of the outer shell (11). The filter component (30) is partially mounted in the outer shell (11), and the other part is mounted on the outer side wall of the outer shell (11) away from the exhaust gas inlet pipe (12). The linkage component (40) is mounted on a side wall of the inner cavity (111) of the outer shell, and the linkage component (40) is located on a side of the filter component (30) close to the exhaust gas inlet pipe (12). The cleaning component (50) is fixedly mounted on the bottom of the inner cavity (111) of the outer shell, and the scraping component (60) is fixedly mounted on the linkage component (40).

2. The exhaust gas filtering and treating device for an incinerator according to claim 1, characterized in that: A sewage drainage groove (112) is provided at the bottom of the outer shell (11), and the sewage drainage groove (112) is communicated with the inner cavity (111) of the outer shell; a sewage drainage pipe (113) is fixedly installed at the bottom of the sewage drainage groove (112); a filter mounting plate (114) is fixedly installed on the side wall of the inner cavity (111) of the outer shell; a circular filter mounting cavity (115) is provided in the middle of the filter mounting plate (114); two vertical limit plates (116) are fixedly installed on the side wall of the filter mounting plate (114) away from the exhaust pipe (13), and the two vertical limit plates (116) are symmetrically arranged; a limit ring (117) is fixedly installed on the side wall of the filter mounting cavity (115) away from the exhaust gas intake pipe (12).

3. The exhaust gas filtering and treating device for an incinerator according to claim 2, characterized in that: The spray dust removal assembly (20) comprises a dust removal water tank (21) and a plurality of dust removal nozzles (22); the dust removal water tank (21) is fixedly mounted on the top of the outer shell (11); the plurality of dust removal nozzles (22) are fixedly mounted on the bottom of the dust removal water tank (21); and the bottom of the dust removal nozzle (22) penetrates the top wall of the outer shell (11) and extends into the inner cavity (111) of the outer shell.

4. The exhaust gas filtering and treating device for an incinerator according to claim 3, characterized in that: The filter assembly (30) comprises a drive motor (31), a drive connecting column (32), a drive connecting rod (33), two drive rotating plates (34), a plurality of transverse holding springs (35), a filter circular plate (36) and a missing gear (37); the drive motor (31) is fixedly mounted on the outer wall of the outer shell (11) away from the exhaust gas intake pipe (12), and the drive motor (31) extends through the side wall of the outer shell (11) into the inner cavity (111) of the outer shell; the drive connecting column (32) is fixedly mounted on the output shaft of the drive motor (31), and the drive connecting column (32) is located in the inner cavity (111) of the outer shell; the drive connecting rod (33) is fixedly mounted on one end of the drive connecting column (32) away from the drive motor (31), and one end of the drive connecting rod (33) away from the drive motor (31) extends through the filter installation cavity (115); the two drive rotating plates (34) are fixedly mounted on the drive connecting column (32) On the outer wall of the rod (33), a plurality of transverse abutting springs (35) are installed in a circular array on the side wall of the limiting ring (117) away from the driving motor (31), and the filter circular plate (36) is fixedly installed on one end of the plurality of transverse abutting springs (35) away from the limiting ring (117), and the side wall of the filter circular plate (36) is slidably arranged on the side wall of the filter installation cavity (115), and a locking groove (361) is opened in the middle of the filter circular plate (36). The filter circular plate (36) is provided with a plurality of filter holes (363) penetrating through the two side walls. The filter circular plate (36) is slidably arranged on the drive connecting rod (33) and the two drive rotating plates (34) through the engaging sliding groove (361). A side wall of the filter circular plate (36) away from the drive motor (31) is abutted against two vertical limit plates (116). The missing gear (37) is fixedly mounted on one end of the drive connecting rod (33) away from the drive connecting column (32).

5. The exhaust gas filtering and treating device for an incinerator according to claim 4, characterized in that: The linkage assembly (40) comprises a square support tube (41), a linkage reset spring (42), a square stop block (43), a square connecting rod (44), a linkage abutment block (45) and a linkage rack (46); the square support tube (41) is fixedly mounted on a side wall of the inner cavity (111) of the shell; one end of the linkage reset spring (42) is fixedly mounted on the inner wall of the square support tube (41) away from the end of the shell shell (11); the linkage reset spring (42) is located in the square support tube (41); the square stop block (43) is fixedly mounted on the other end of the linkage reset spring (42); the square stop block (43) is slidably arranged on the inner wall of the square support tube (41); the square support tube (41) is away from the inner cavity (111) of the shell shell (11); A reciprocating telescopic groove (411) is provided on a side wall away from one end of the outer shell shell (11); one end of a square connecting rod (44) is fixedly mounted on a square anti-slip block (43); the other end passes through the reciprocating telescopic groove (411) and extends to the outside of the square supporting tube (41); the square connecting rod (44) is slidably arranged in the reciprocating telescopic groove (411); a linkage abutting block (45) is fixedly mounted on one end of the square connecting rod (44) away from the square anti-slip block (43); a linkage rack (46) is fixedly mounted on a side wall of the linkage abutting block (45) away from the square connecting rod (44); the linkage rack (46) is meshed with the missing gear (37); and the bottom surface of the linkage rack (46) is at the same height as the bottom surface of the linkage abutting block (45).

6. The exhaust gas filtering and treating device for an incinerator according to claim 5, characterized in that: The cleaning assembly (50) comprises a cleaning support plate (51) and a cleaning block (52); the cleaning support plate (51) is fixedly mounted on the bottom of the inner cavity (111) of the housing; the bottom of the linkage rack (46) is slidably pressed against the top of the cleaning support plate (51); the cleaning block (52) is fixedly mounted on a side wall of the cleaning support plate (51) away from the exhaust gas intake pipe (12); and the side wall of the cleaning block (52) away from the cleaning support plate (51) is pressed against the filter circular plate (36); the cleaning block (52) is used to clean the filter circular plate (36); two symmetrical cleaning inclined surfaces (521) are formed on the side wall of the cleaning block (52) facing the filter circular plate (36); and the distance between the two cleaning inclined surfaces (521) gradually increases toward the direction of the cleaning support plate (51).

7. The exhaust gas filtering and treating device for an incinerator according to claim 6, characterized in that: The scraping assembly (60) comprises a movable scraping block (61), a cleaning air bag (62) and a cleaning scraper (63). The movable scraping block (61) is fixedly mounted on the bottom of the linkage abutting block (45) near one end of the filtering circular plate (36). A dust collecting chamber (611) penetrating the bottom is provided inside the movable scraping block (61). A wedge-shaped groove (612) is provided on one side wall of the movable scraping block (61) facing the cleaning block (52), and the wedge-shaped groove (612) is communicated with the dust collecting chamber (611). A first guiding inclined surface (613) is formed on one side wall of the dust collecting chamber (611) away from the wedge-shaped groove (612), and the distance between the first guiding inclined surface (613) and the wedge-shaped groove (612) gradually increases in the vertical downward direction. A second guiding inclined surface (614) is formed on the side wall of the movable scraping block (61) away from the cleaning block (52), and the second guiding inclined surface (614) is in contact with the cleaning plate (52). The distance between the cleaning blocks (52) gradually decreases in the vertical downward direction. The cleaning air bag (62) is fixedly mounted on the top of the linkage abutting block (45) near one end of the filter disc (36). The bottom of the cleaning air bag (62) is provided with an air bag through groove penetrating to the inside of the cleaning air bag (62). The top of the linkage abutting block (45) near one end of the filter disc (36) is provided with a linkage through groove penetrating to the bottom, and the linkage through groove is communicated with the air bag through groove. The top of the movable scraper block (61) is provided with a scraper through groove, and the bottom of the scraper through groove is communicated with the dust collecting chamber (611), and the top of the scraper through groove is communicated with the linkage through groove. The cleaning scraper (63) is rotatably mounted on the bottom of the movable scraper block (61), and the cleaning scraper (63) is located on a side wall of the movable scraper block (61) near the cleaning block (52). The cleaning scraper (63) is located on one side of the sewage drainage groove (112).

8. The exhaust gas filtering and treating device for an incinerator according to claim 7, characterized in that: A circular boss (362) is convexly provided on a side wall of the filter disc (36) away from the drive motor (31); two symmetrical abutment slopes (451) are formed on one end of the linkage abutment block (45) facing the filter disc (36); and the distance between the two abutment slopes (451) gradually decreases toward the filter disc (36); an induced draft fan (14) is fixedly mounted on one end of the air outlet pipe (13) away from the outer shell (11); and an exhaust pipe (15) is mounted on the top of the induced draft fan (14).

9. The exhaust gas filtering and treating device for an incinerator according to claim 8, characterized in that: A plurality of flipping abutting blocks (118) are rotatably mounted on the bottom of a side wall of the filter mounting plate (114) away from the driving motor (31) via a torsion spring, and a passing groove (631) is formed at one end of the cleaning scraper (63) close to the filter mounting plate (114).

10. A method for filtering and treating waste gas from an incinerator, using the waste gas filtering and treating device for an incinerator as claimed in claim 9, characterized in that: The following steps are involved: Step 1: connecting the waste gas generated in the incinerator to the waste gas inlet pipe (12) through a pipeline, and discharging the waste gas into the inner cavity (111) of the shell through the waste gas inlet pipe (12); Step 2: using a plurality of dust removal nozzles (22) to spray water in the dust removal water tank (21) downwards, so that the water is mixed with the incoming exhaust gas and precipitated, and the exhaust gas is filtered again using a filter disc (36), and the induced draft fan (14) is started to extract the filtered gas from the inner cavity (111) of the housing; Step 3: Start the driving motor (31) to rotate the filter disc (36), and the cleaning block (52) is attached to the filter disc (36) to wipe and clean the rotating filter disc (36); Step 4: The driving motor (31) is started to rotate the missing gear (37), and the rotation of the missing gear (37) drives the linkage rack (46) to move back and forth, and the reciprocating movement of the linkage rack (46) drives the moving scraper block (61) to move back and forth to clean the cleaning block (52); Step 5: The scraping block (61) moves back and forth to drive the cleaning scraper (63) to move back and forth, scraping the dust and particles at the bottom of the inner cavity (111) of the shell into the sewage drainage groove (112) for discharge.

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