High-efficiency filter for air pollution control

Abstract

The invention relates to the technical field of air pollution treatment, in particular to an efficient filter for air pollution treatment, which comprises a waste gas supply pipe and an equipment base, the waste gas supply pipe is positioned above the equipment base, a central column is fixed at the axis of the equipment base, and the upper end of the central column is coaxially fixed with the lower end of the waste gas supply pipe; a plurality of waste gas treatment structures are mounted at the upper end of the equipment base. After the air permeability is reduced along with the increase of dust attached to the inner wall of the filter cartridge, the air pressure disc gradually moves upwards under the pushing of air pressure, and the air pressure disc gradually moves upwards along with the increase of the filtering time of the filter cartridge; the horizontal end of the bent shifting rod is in contact with the inclined face of the inclined face push plate in a sliding mode to drive the air pressure disc to move downwards to scrape the inner wall of the filter cartridge, so that dust falls into the bent pipe through the dust outlet pipe, the cleaned dust is separated from the outer vertical pipe, and waste gas is filled into the filter cartridge to be filtered and cannot be mixed with originally filtered dust.

Description

Technical Field

[0001] The present invention relates to the technical field of air pollution control, and more particularly to an efficient filter for air pollution control. Background Art

[0002] Air pollution also refers to air contamination, which is mainly caused by human factors and natural factors. To prevent air pollution from affecting people's production and life and to protect the ecological environment, a filtering device for air pollution control is needed to treat air pollution.

[0003] Chinese Patent Publication No. CN220443413U discloses an efficient filter for air pollution control, including a filter box body. In the inner cavity of the filter box body, a first filter screen and a second filter screen are symmetrically installed. On the side surfaces of the first filter screen and the second filter screen facing the air inlet pipe, elastic impact dust removal components capable of applying force to strike the filter screen surface are installed. On the inner walls of the detachable top cover, two cleaning brushes capable of lifting and cleaning the dust on the surfaces of the first filter screen and the second filter screen after striking the dust on the filter screen surfaces are symmetrically installed through lifting components. This efficient filter for air pollution control can not only clean the dust on the filter screen surface, but also has a structure for striking the filter screen, which can strike and drop the stubbornly accumulated dust attached to the filter screen due to the vibration force, thereby improving the cleaning effect and the air filtration efficiency. The above related technologies have the following defects: In the prior art, in order to prevent the dust generated during filtration from adhering to the surface of the filtration structure for a long time, a movable cleaning structure is used to clean the dust attached to the surface of the filtration structure. However, when the existing filtration structure is cleaned, waste gas is also introduced. In this way, the cleaned dust is still in the space where the waste gas is filled, and the dust will adhere to the surface of the filtration structure again following the waste gas. As time goes by, the speed of dust accumulation on the surface of the filtration structure will become faster and faster, and then the cleaning structure cannot clean in time. For this reason, an efficient filter for air pollution control is proposed. Summary of the Invention

[0004] In order to timely separate the dust cleaned from the surface of the filtration structure from the interior of the device and effectively prevent the cleaned dust from reciprocally mixing into the waste gas, the present invention provides an efficient filter for air pollution control.

[0005] An efficient filter for air pollution control provided by the present invention adopts the following technical solutions: It includes an exhaust gas supply pipe and a device base. The exhaust gas supply pipe is located above the device base. A central column is fixed at the axis of the device base, and the upper end of the central column is coaxially fixed with the lower end of the exhaust gas supply pipe. A plurality of exhaust gas treatment structures are installed at the upper end of the device base.

[0006] The waste gas treatment structure includes a bottom strip frame, a U-shaped ventilation plate, and a square block. The bottom strip frame is connected to the equipment base. The U-shaped ventilation plate is fixedly installed inside the bottom strip frame. The square block is slidably inserted into the U-shaped opening of the U-shaped ventilation plate. The U-shaped ventilation plate is connected and installed to the circumferential side of the waste gas supply pipe. Air supply grooves are provided on the inner walls of the two sides of the U-shaped ventilation plate. Ventilation holes are provided on the contact surfaces of the square block and the U-shaped ventilation plate. An outer vertical pipe is fixedly penetrated through the upper surface of the square block. An air supply groove is provided at one end of the outer vertical pipe located inside the square block. A filter cylinder is coaxially arranged inside the outer vertical pipe. The lower end of the filter cylinder is fixedly inserted into the outer vertical pipe. The filter cylinder is located above the air supply groove. An exhaust groove is provided on the circumferential side of the outer vertical pipe above the lower end of the filter cylinder. A synchronous moving ring is slidably inserted between the outer vertical pipe and the filter cylinder. A pressure plate is slidably inserted into the filter cylinder. A through frame slidably penetrates through the upper end of the outer vertical pipe. Both the synchronous moving ring and the pressure plate are fixed to the lower end of the through frame. The lower end of the outer vertical pipe slidably penetrates through the inner bottom wall of the bottom strip frame. A dust outlet pipe is slidably inserted into the inner bottom wall of the outer vertical pipe. A bent pipe is fixed to the bottom surface of the outer vertical pipe. An inner plug column is fixed inside the bent pipe. The upper end of the inner plug column is slidably inserted and matched with the lower end of the dust outlet pipe. The lower end of the bent pipe slidably penetrates through the upper surface of the bent pipe. A double-bent rod frame is damped and slidably penetrated through the bottom surface of the bent pipe. The upper end of the double-bent rod frame is fixed to the lower end of the dust outlet pipe. A damping structure is installed at one end of the through frame located outside the outer vertical pipe. The other end of the damping structure is fixed to the square block. Inner frame vertical rods are provided on both sides of the outer vertical pipe. The lower ends of the inner frame vertical rods are fixed to the lower ends of the double-bent rod frame. A bent lever is slidably inserted into the inner frame vertical rods. The upper end of the bent lever is fixed to the through frame. A force-receiving lever frame is provided on the side of the damping structure away from the waste gas supply pipe. One end of the force-receiving lever frame away from the damping structure is bent upward. An inclined surface push plate is provided on the side of the bent lever close to the waste gas supply pipe. The inclined surface push plate is fixed to the bottom strip frame. The outer vertical pipe and the bottom strip frame are elastically connected at one end close to the waste gas supply pipe.

[0007] A power twisting structure is installed at the upper end of the equipment base. A variable-diameter rod is installed on the power twisting structure. The variable-diameter rod is located above the force-receiving lever frame.

[0008] Optionally, the bottom surface of the pressure plate is flush with the bottom surface of the synchronous moving ring. Two air-blocking plates are fixed to the side of the square block away from the waste gas supply pipe. The air-blocking plates are in sliding contact with the U-shaped inner walls of the U-shaped ventilation plate.

[0009] Optionally, the lower end of the bent lever is horizontal. The side of the inclined surface push plate away from the waste gas supply pipe is an inclined surface. The distance between the upper end of the inclined surface push plate and the waste gas supply pipe is greater than the distance between the lower end of the inclined surface push plate and the waste gas supply pipe.

[0010] Optionally, the distance between the upper surface of the pressure plate and the inner bottom wall of the outer vertical pipe is greater than the distance between the upper surface of the horizontal end of the bent lever and the inner top wall of the inner frame vertical rod. The difference in distance between the upper surface of the pressure plate and the inner bottom wall of the outer vertical pipe and the upper surface of the horizontal end of the bent lever and the inner top wall of the inner frame vertical rod is greater than the distance between the upper surface of the force-receiving lever frame and the bottom surface of the variable-diameter rod.

[0011] Optionally, the damping structure includes a damping vertical plate and an elastic clamping plate. One side of the damping vertical plate close to the outer vertical pipe is a grooved structure with multiple upper and lower double inclined planes. One end of the elastic clamping plate is fixed to the through-frame, and the other end of the elastic clamping plate is located inside a grooved structure of the damping vertical plate. The damping vertical plate is connected to the square block.

[0012] Optionally, the power twisting structure includes a twisting ring, a driving gear, and a power motor. The driving gear is fixed to the output end of the power motor, and the power motor is fixed to the equipment base. The twisting ring is rotatably sleeved on the upper end of the equipment base. The outer ring surface of the twisting ring meshes with the driving gear. The distances between the two ends of the variable-diameter rod and the waste gas supply pipe are different. The end of the variable-diameter rod with the farthest distance from the waste gas supply pipe is fixed to the outer ring surface of the twisting ring.

[0013] Optionally, a collection ring is arranged above the equipment base. The collection ring is coaxially fixed on the outer surface of the central column. The lower end of the elbow pipe is slidably sleeved with a dust inlet hopper. The lower end of the dust inlet hopper is connected and installed with the upper surface of the collection ring. A dust discharge pipe is connected and installed at the bottom surface of the collection ring. The lower end of the collection ring is in an eccentric cone shape.

[0014] Optionally, the upper end of the inner plug column is conical, the upper end of the dust outlet pipe is in a conical concave shape, and the outer ring side of the upper end of the dust outlet pipe is arranged as a cylindrical structure matching the inner wall of the outer vertical pipe.

[0015] Optionally, a stabilizing sleeve frame is damping slidably sleeved on the outer surface of the inner frame vertical rod, and the stabilizing sleeve frame is fixed to the outer surface of the elbow pipe.

[0016] In summary, the present invention includes the following beneficial technical effects: The present invention is provided with components such as an air pressure plate, a force-bearing lever frame, a dust outlet pipe and an inner blocking column. In the initial state, the inner blocking column blocks the dust outlet pipe located at the bottom, and the exhaust gas enters the bottom of the air pressure plate inside the filter cartridge through the ventilation groove. Then the gas passes through the filter cartridge at the position below the air pressure plate, and the dust is filtered and blocked inside the filter cartridge. As the dust attached to the inner wall of the filter cartridge increases and the air permeability decreases, the air pressure plate gradually moves upward under the push of the air pressure, allowing the exhaust gas to pass through the newly leaked part of the filter cartridge from the bottom of the air pressure plate. As the filtration time of the filter cartridge increases, the air pressure plate gradually moves upward, and when the air pressure plate drives the bent lever through the penetration frame to apply a thrust to the inner top wall of the inner frame upright rod, the inner frame upright rod moves upward, the dust outlet pipe follows the inner frame upright rod to move upward and break away from the blockage of the inner blocking column, driving the force-bearing lever frame to move upward. When the upper end of the rod frame and the reducing rod are located in the same plane, the reducing rod rotates by applying a thrust to the force-bearing lever frame, which can push the block to move backward relative to the bottom bar frame, stop supplying air to the block, and the horizontal end of the bent lever slides in contact with the inclined surface of the inclined push plate to drive the through-frame and the air pressure plate to move downward. When the air pressure plate moves downward, it scrapes the inner wall of the filter cartridge, causing dust to fall into the bent pipe through the dust outlet pipe, so that the cleaned dust is separated from the outer vertical pipe. When the bent lever moves to the lowest part of the inclined push plate, the bent lever applies a thrust to the inner bottom wall of the inner frame vertical rod, driving the dust outlet pipe and the force-bearing lever frame downward. After the force-bearing lever frame is disengaged from the reducing rod, the outer vertical pipe is reset under the elastic connection with the bottom bar frame, and the exhaust gas filled into the filter cartridge for filtration will not be mixed with the originally filtered dust. The present invention sets a synchronous moving ring, which moves synchronously with the air pressure plate through a frame. The moving ring prevents the filtered exhaust gas from entering the outer riser and the filter cartridge, and then flowing through the outside of the filter cartridge to the part above the air pressure plate inside the filter cartridge, thereby affecting the upward movement of the air pressure plate.

[0017] The present invention arranges an air blocking plate. When the block moves backward to misalign the vent hole and the air supply groove, the block drives the air blocking plate to block the air supply groove provided on the surface of the U-shaped vent plate, thereby effectively preventing the exhaust gas from leaking to the outside before filtering.

[0018] The present invention provides a collecting ring and a dust inlet hopper. When the bent pipe moves with the block, the lower end of the bent pipe slides on the upper end of the dust inlet hopper. The dust falling into the bent pipe enters the collecting ring through the dust inlet hopper and is then discharged from the dust exhaust pipe at the lower end of the collecting ring, thereby facilitating the centralized collection of the discharged dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 is a schematic diagram of a top view structure in an embodiment of the present invention; Figure 3 is a schematic diagram of the structure of the connection between the torsion ring and the equipment base in an embodiment of the present invention; Figure 4 It is a schematic diagram of the position of the force-receiving lever frame and the variable-diameter rod in the embodiment of the present invention; Figure 5 It is a schematic structural diagram of the connection between the U-shaped ventilation plate and the waste gas supply pipe in the embodiment of the present invention; Figure 6 It is a schematic structural diagram of the connection between the through-frame and the outer vertical pipe in the embodiment of the present invention; Figure 7 It is a schematic structural diagram of the connection between the air pressure plate and the filter cartridge in the embodiment of the present invention; Figure 8 It is in the embodiment of the present invention Figure 6 The enlarged schematic diagram of the structure at A; Figure 9 It is a schematic side view of a part of the structure in the embodiment of the present invention.

[0020] Reference numerals: 1. Waste gas supply pipe; 2. Central column; 3. Equipment base; 4. Waste gas treatment structure; 41. Bottom strip frame; 42. U-shaped ventilation plate; 43. Square block; 44. Air supply groove; 45. Outer vertical pipe; 46. Ventilation groove; 47. Filter cartridge; 48. Exhaust groove; 49. Synchronous moving ring; 410. Air pressure plate; 411. Through-frame; 412. Dust outlet pipe; 413. Elbow pipe; 414. Inner plug column; 415. Double-bent rod frame; 416. Damping structure; 4161. Damping vertical plate; 4162. Elastic clamping plate; 417. Inner frame vertical rod; 418. Bent lever; 419. Force-receiving lever frame; 420. Inclined plane push plate; 421. Ventilation hole; 5. Power twisting structure; 51. Twisting ring; 52. Power motor; 53. Driving gear; 6. Variable-diameter rod; 7. Air-blocking plate; 8. Collection ring; 9. Stable sleeve frame; 10. Dust discharge pipe; 11. Dust inlet hopper. Detailed implementation manners

[0021] The following further elaborates on the present invention in conjunction with the attached Figures 1 - 9 drawings.

[0022] The embodiment of the present invention discloses an efficient filter for air pollution control. As Figures 1 - 9 shown, it includes a waste gas supply pipe 1 and an equipment base 3. The waste gas supply pipe 1 is connected to a waste gas providing device. The waste gas supply pipe 1 is located above the equipment base 3. A central column 2 is fixed at the axis of the equipment base 3. The upper end of the central column 2 is coaxially fixed to the lower end of the waste gas supply pipe 1. A plurality of waste gas treatment structures 4 are installed at the upper end of the equipment base 3, and the plurality of waste gas treatment structures 4 enhance the filtering effect.

[0023] The waste gas treatment structure 4 includes a bottom strip frame 41, a U-shaped ventilation plate 42 and a square block 43. The bottom strip frame 41 is connected to the equipment base 3. The U-shaped ventilation plate 42 is fixedly installed inside the bottom strip frame 41. The square block 43 is slidably inserted into the U-shaped opening of the U-shaped ventilation plate 42. The U-shaped ventilation plate 42 is connected and installed to the circumferential side surface of the waste gas supply pipe 1. Air supply grooves 44 are formed on the inner walls of both sides of the U-shaped ventilation plate 42. Ventilation holes 421 are formed on the contact surfaces of the square block 43 and the U-shaped ventilation plate 42. An outer riser pipe 45 fixedly penetrates through the upper surface of the square block 43. An air supply groove 46 is formed at one end of the outer riser pipe 45 located inside the square block 43. The waste gas supply pipe 1 fills the outer riser pipe 45 with waste gas through the air supply groove 44 formed on the surface of the U-shaped ventilation plate 42, the ventilation holes 421 on the surface of the square block 43, and the air supply groove 46 formed on the outer riser pipe 45.

[0024] A filter cartridge 47 is coaxially arranged inside the outer riser pipe 45. The lower end of the filter cartridge 47 is fixedly inserted into the outer riser pipe 45. The filter cartridge 47 is located above the air supply groove 46. An exhaust groove 48 is formed on the circumferential side surface of the outer riser pipe 45 above the lower end of the filter cartridge 47. A synchronous moving ring 49 is slidably inserted between the outer riser pipe 45 and the filter cartridge 47. A pressure plate 410 is slidably inserted into the filter cartridge 47. A through frame 411 slidably penetrates through the upper end of the outer riser pipe 45. Both the synchronous moving ring 49 and the pressure plate 410 are fixed to the lower end of the through frame 411. The bottom surface of the pressure plate 410 is flush with the bottom surface of the synchronous moving ring 49. The synchronous moving ring 49 moves synchronously with the pressure plate 410 to prevent the filtered waste gas from flowing above the pressure plate 410 through the filter cartridge 47 when the filtered waste gas enters between the outer riser pipe 45 and the filter cartridge 47, which may affect the upward movement of the pressure plate 410. Two air blocking plates 7 are fixed to one side of the square block 43 away from the waste gas supply pipe 1. The air blocking plates 7 are in sliding contact with the U-shaped inner wall of the U-shaped ventilation plate 42. When the square block 43 moves backward, it drives the air blocking plates 7 to block the air supply grooves 44 to prevent the unfiltered waste gas from being discharged to the outside. The lower end of the outer riser pipe 45 slidably penetrates through the inner bottom wall of the bottom strip frame 41. A dust outlet pipe 412 is slidably inserted into the inner bottom wall of the outer riser pipe 45.

[0025] A bent pipe 413 is fixed to the bottom surface of the outer riser 45. Above the equipment base 3, a collection ring 8 is provided. The collection ring 8 is coaxially fixed to the outer surface of the central column 2. The lower end of the bent pipe 413 is slidably sleeved with a dust inlet hopper 11. The lower end of the dust inlet hopper 11 is connected and installed with the upper surface of the collection ring 8. A dust discharge pipe 10 is connected and installed to the bottom surface of the collection ring 8. The lower end of the collection ring 8 is in an eccentric cone shape. Dust falling from the lower ends of different bent pipes 413 all falls into the collection ring 8 through the corresponding dust inlet hoppers 11. Then, under the action of the cone at the bottom surface of the collection ring 8, the dust slides out from the dust discharge pipe 10 as a whole through the bottom surface of the collection ring 8. An inner plug column 414 is fixed inside the bent pipe 413. The upper end of the inner plug column 414 is slidably inserted and fitted with the lower end of the dust outlet pipe 412. The lower end of the bent pipe 413 slidably penetrates through the upper surface of the bent pipe 413. When the dust outlet pipe 412 is at the lowest position, the inner plug column 414 plugs the lower end of the dust outlet pipe 412 to prevent unfiltered waste gas from entering the bent pipe 413. The upper end of the inner plug column 414 is conical, and the upper end of the dust outlet pipe 412 is in a conical concave shape. The outer ring side of the upper end of the dust outlet pipe 412 is set as a cylindrical structure that matches the inner wall of the outer riser 45. A double-bent rod frame 415 is slidably penetrated through the bottom surface of the bent pipe 413 in a damped manner. The upper end of the double-bent rod frame 415 is fixed to the lower end of the dust outlet pipe 412.

[0026] A damping structure 416 is installed at one end of the outer vertical pipe 45 outside the threading frame 411. The other end of the damping structure 416 is fixed to the square block 43. Inner frame vertical rods 417 are arranged on both sides of the outer vertical pipe 45. The lower ends of the inner frame vertical rods 417 are fixed to the lower ends of the double-bent rod frames 415. A stable sleeve frame 9 is damping-slidingly sleeved on the outer surface of the inner frame vertical rod 417. The stable sleeve frame 9 is fixed to the outer surface of the bent pipe 413. The stable sleeve frame 9 improves the stability of the inner frame vertical rod 417 when it moves. A bent lever 418 is slidably inserted into the inner frame vertical rod 417. The upper end of the bent lever 418 is fixed to the threading frame 411. When the bent lever 418 does not exert a thrust on the inner frame vertical rod 417, the damping connection between the double-bent rod frame 415 and the bent pipe 413 prevents the double-bent rod frame 415 from moving. A force-receiving lever frame 419 is arranged on the side of the damping structure 416 away from the exhaust gas supply pipe 1. One end of the force-receiving lever frame 419 away from the damping structure 416 is bent upward. The damping structure 416 includes a damping vertical plate 4161 and an elastic clamping plate 4162. The surface of the damping vertical plate 4161 close to the outer vertical pipe 45 is a grooved structure with multiple upper and lower double inclined planes. One end of the elastic clamping plate 4162 is fixed to the threading frame 411. The other end of the elastic clamping plate 4162 is located inside a grooved structure of the damping vertical plate 4161. The damping vertical plate 4161 is connected to the square block 43. The elastic clamping plate 4162 generates resistance to the movement of the threading frame 411 and the air pressure plate 410 by being stuck inside the grooved structure of the damping vertical plate 4161. When enough dust adheres to the part of the filter cartridge 47 below the air pressure plate 410 and the air pressure received below the air pressure plate 410 increases to a certain extent, the air pressure plate 410 drives the elastic clamping plate 4162 to elastically deform and be misaligned with the grooved structure of the damping vertical plate 4161 it cooperates with through the threading frame 411. After the air pressure plate 410 moves upward under the air pressure, it drives the elastic clamping plate 4162 to cooperate with the grooved structure adjacent above the damping vertical plate 4161, preventing the air pressure plate 410 from continuously moving upward when being pushed by the air pressure, and ensuring that the air pressure plate 410 can move upward only after enough dust adheres to the inner wall of the filter cartridge 47.

[0027] A beveled push plate 420 is arranged on one side of the bent lever 418 close to the exhaust gas supply pipe 1. The beveled push plate 420 is fixed to the bottom strip frame 41. The outer vertical pipe 45 is elastically connected to one end of the bottom strip frame 41 close to the exhaust gas supply pipe 1. The lower end of the bent lever 418 is horizontal. The side of the beveled push plate 420 away from the exhaust gas supply pipe 1 is an inclined surface. The distance between the upper end of the beveled push plate 420 and the exhaust gas supply pipe 1 is greater than the distance between the lower end of the beveled push plate 420 and the exhaust gas supply pipe 1. The distance between the upper surface of the air pressure disc 410 and the inner bottom wall of the outer vertical pipe 45 is greater than the distance between the upper surface of the horizontal end of the bent lever 418 and the inner top wall of the inner frame vertical rod 417. The distance difference between the upper surface of the air pressure disc 410 and the inner bottom wall of the outer vertical pipe 45 and the distance between the upper surface of the horizontal end of the bent lever 418 and the inner top wall of the inner frame vertical rod 417 is greater than the distance between the upper surface of the force-receiving lever frame 419 and the bottom surface of the variable-diameter rod 6. When the air pressure disc 410 drives the through-frame 411 to move a certain height, the bent lever 418 is driven by the through-frame 411 to apply a thrust to the inner top wall of the inner frame vertical rod 417, and the dust outlet pipe 412 moves upward with the inner frame vertical rod 417 to break away from the blockage of the inner plug column 414. When the upper end of the force-receiving lever frame 419 and the variable-diameter rod 6 are in the same plane, when the variable-diameter rod 6 rotates, a thrust is applied to the force-receiving lever frame 419, which can push the square block 43 to move backward relative to the bottom strip frame 41, and stop supplying gas to the square block 43. The horizontal end of the force-receiving lever frame 419 drives the through-frame 411 and the air pressure disc 410 to move downward by contacting and sliding on the inclined surface of the beveled push plate 420. When the air pressure disc 410 moves downward, it scrapes the inner wall of the filter cartridge 47, so that the dust falls into the elbow pipe 413 through the dust outlet pipe 412, and the cleaned dust is separated from the outer vertical pipe 45. When the bent lever 418 moves to the lowest position of the beveled push plate 420, the bent lever 418 applies a thrust to the inner bottom wall of the inner frame vertical rod 417, driving the dust outlet pipe 412 and the force-receiving lever frame 419 downward. After the force-receiving lever frame 419 is separated from the variable-diameter rod 6, the outer vertical pipe 45 returns to its original position under the elastic connection with the bottom strip frame 41.

[0028] A power twisting structure 5 is installed at the upper end of the equipment base 3. The power twisting structure 5 is provided with a variable-diameter rod 6. The variable-diameter rod 6 is located above the force-receiving lever frame 419. The power twisting structure 5 includes a torsion ring 51, a driving gear 53 and a power motor 52. The driving gear 53 is fixed to the output end of the power motor 52. The power motor 52 is fixed to the equipment base 3. The torsion ring 51 is rotatably sleeved on the upper end of the equipment base 3. The outer ring surface of the torsion ring 51 is engaged with the driving gear 53. The distances between the two ends of the variable-diameter rod 6 and the exhaust gas supply pipe 1 are different. The end of the variable-diameter rod 6 with the farthest distance from the exhaust gas supply pipe 1 is fixed to the outer ring surface of the torsion ring 51. The power motor 52 drives the variable-diameter rod 6 to rotate around the equipment base 3 through the engagement of the driving gear 53 and the torsion ring 51.

[0029] The working principle is as follows: in the initial state, the inner blocking column 414 blocks the dust outlet pipe 412 at the bottom, and the exhaust gas supply pipe 1 fills the U-shaped ventilation plate 42 connected thereto with exhaust gas. The outer vertical pipe 45 is elastically connected to the bottom bar frame 41, driving the ventilation hole 421 of the block 43 to communicate with the air supply groove 44, and the exhaust gas enters the bottom of the air pressure plate 410 inside the filter cartridge 47 through the ventilation groove 46, and then the gas passes through the filter cartridge 47 at the bottom of the air pressure plate 410, and the dust is filtered and blocked inside the filter cartridge 47. As the dust attached to the inner wall of the filter cartridge 47 increases and the air permeability decreases, the air pressure plate 410 gradually moves upward under the push of the air pressure, and the elastic clamping plate 4162 is clamped inside the groove structure of the damping vertical plate 4161 , which creates resistance to the movement of the through-frame 411 and the air pressure plate 410. When there is enough dust attached to the part of the filter cartridge 47 located below the air pressure plate 410, the air pressure below the air pressure plate 410 increases to a certain extent, and the air pressure plate 410 drives the elastic clamping plate 4162 to elastically deform and misalign with the groove structure of the matched damping vertical plate 4161 through the through-frame 411. After the air pressure plate 410 moves upward under the air pressure, it drives the elastic clamping plate 4162 to cooperate with the adjacent groove structure above the damping vertical plate 4161, so that the exhaust gas from the filter cartridge 47 newly leaked from the bottom of the air pressure plate 410 passes through, and the filtered gas is discharged from the exhaust groove 48 at the lower end of the outer vertical pipe 45. When the air pressure plate 410 drives the through-frame 411 to move upward under the air pressure, it drives the elastic clamping plate 4162 to cooperate with the adjacent groove structure above the damping vertical plate 4161, so that the exhaust gas from the filter cartridge 47 newly leaked from the bottom of the air pressure plate 410 passes through, and the filtered gas is discharged from the exhaust groove 48 at the lower end of the outer vertical pipe 45. After moving to a certain height, the bending lever 418 is driven by the through-frame 411 to apply a thrust to the inner top wall of the inner frame upright 417, so that the inner frame upright 417 moves upward, and the dust outlet pipe 412 follows the inner frame upright 417 to move upward and break away from the blockage of the inner blocking column 414, driving the upper end of the force-bearing lever frame 419 to be in the same plane with the diameter-changing rod 6. When the diameter-changing rod 6 rotates, the force-bearing lever frame 419 is applied with a thrust, so that the block 43 can be pushed to move backward relative to the bottom bar frame 41, and the air supply to the block 43 is stopped. The horizontal end of the force-bearing lever frame 419 slides in contact with the inclined surface of the inclined push plate 420, driving the through-frame 411 and the air pressure plate 410 to move downward. When the air pressure plate 410 moves downward, the filter The inner wall of the cylinder 47 is scraped to make the dust fall into the bent pipe 413 through the dust outlet pipe 412, so that the cleaned dust is separated from the outer vertical pipe 45. When the bent lever 418 moves to the lowest position of the inclined push plate 420, the bent lever 418 applies a thrust to the inner bottom wall of the inner frame vertical rod 417, thereby driving the dust outlet pipe 412 and the force-bearing lever frame 419 downward. After the force-bearing lever frame 419 is separated from the reducing rod 6, the outer vertical pipe 45 is reset under the elastic connection with the bottom bar frame 41, and the inner blocking column 414 re-blocks the lower end of the dust outlet pipe 412. The dust falling into the bent pipe 413 enters the collecting ring 8 through the dust inlet hopper 11, and is then discharged from the dust exhaust pipe 10 at the lower end of the collecting ring 8, so as to facilitate the centralized collection of the discharged dust.

[0030] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A high efficiency filter for air pollution control, comprising an exhaust gas supply pipe (1) and an equipment base (3), wherein the exhaust gas supply pipe (1) is located above the equipment base (3), and is characterized in that: A central column (2) is fixed at the axis of the equipment base (3); the upper end of the central column (2) is coaxially fixed to the lower end of the exhaust gas supply pipe (1); and a plurality of exhaust gas treatment structures (4) are installed at the upper end of the equipment base (3); The waste gas treatment structure (4) comprises a bottom bar frame (41), a U-shaped ventilation plate (42) and a block (43); the bottom bar frame (41) is connected to the equipment base (3); the U-shaped ventilation plate (42) is fixedly installed inside the bottom bar frame (41); the block (43) is slidably inserted into the U-shaped opening of the U-shaped ventilation plate (42); the U-shaped ventilation plate (42) is connected to the circumferential side of the waste gas supply pipe (1) and installed; the inner walls of both sides of the U-shaped U-shaped ventilation plate (42) are provided with air supply grooves (44); the contact surfaces of the block (43) and the U-shaped ventilation plate (42) are both provided with ventilation holes (421); an external vertical pipe (45) is fixedly penetrated through the upper surface of the block (43); one end of the external vertical pipe (45) located inside the block (43) is provided with a A vent groove (46) is coaxially arranged inside the external stand pipe (45) with a filter cartridge (47), the lower end of the filter cartridge (47) is fixedly inserted inside the external stand pipe (45), the filter cartridge (47) is located above the vent groove (46), and an exhaust groove (48) is provided on the circumferential side surface of the external stand pipe (45) above the lower end of the filter cartridge (47), a synchronous moving ring (49) is slidably inserted between the external stand pipe (45) and the filter cartridge (47), an air pressure plate (410) is slidably inserted inside the filter cartridge (47), a through frame (411) is slidably penetrated at the upper end of the external stand pipe (45), the synchronous moving ring (49) and the air pressure plate (410) are fixed to the lower end of the through frame (411), and the lower end of the external stand pipe (45) is slidably penetrated through the bottom bar frame (411) ) inner bottom wall, the inner bottom wall of the outer stand pipe (45) is slidably plugged with a dust outlet pipe (412), a bent pipe (413) is fixed on the bottom surface of the outer stand pipe (45), an inner blocking column (414) is fixed inside the bent pipe (413), the upper end of the inner blocking column (414) is slidably plugged on the lower end of the dust outlet pipe (412), the lower end of the bent pipe (413) slides through the upper surface of the bent pipe (413), a double bent rod frame (415) is damped and slidably penetrated on the bottom surface of the bent pipe (413), the upper end of the double bent rod frame (415) is fixed to the lower end of the dust outlet pipe (412), a damping structure (416) is installed on one end of the through frame (411) located outside the outer stand pipe (45), the other end of the damping structure (416) is fixed to the block (43), the outer stand pipe (45) Both sides are provided with inner frame uprights (417), the lower ends of the inner frame uprights (417) are fixed to the lower ends of the double bent rod frames (415), a bending lever (418) is slidably inserted inside the inner frame uprights (417), the upper ends of the bending lever (418) are fixed to the through-frame (411), a force lever frame (419) is provided on the side of the damping structure (416) away from the exhaust gas supply pipe (1), one end of the force lever frame (419) away from the damping structure (416) is bent upward, an inclined push plate (420) is provided on the side of the bending lever (418) close to the exhaust gas supply pipe (1), the inclined push plate (420) is fixed to the bottom bar frame (41), and the outer stand pipe (45) is elastically connected to one end of the bottom bar frame (41) close to the exhaust gas supply pipe (1); A power torsion structure (5) is installed at the upper end of the equipment base (3), and a diameter-changing rod (6) is installed on the power torsion structure (5), and the diameter-changing rod (6) is located above the force-bearing lever frame (419).

2. A high efficiency filter for air pollution control according to claim 1, characterized in that: The bottom surface of the air pressure plate (410) is flush with the bottom surface of the synchronous moving ring (49), and two air blocking plates (7) are fixed to a side of the block (43) away from the exhaust gas supply pipe (1), and the air blocking plates (7) are in sliding contact with the U-shaped inner wall of the U-shaped ventilation plate (42).

3. The high efficiency filter for air pollution control according to claim 1, characterized in that: The lower end of the bent push rod (418) is horizontal, the side of the inclined push plate (420) away from the exhaust gas supply pipe (1) is an inclined surface, and the distance between the upper end of the inclined push plate (420) and the exhaust gas supply pipe (1) is greater than the distance between the lower end of the inclined push plate (420) and the exhaust gas supply pipe (1).

4. A high efficiency filter for air pollution control according to claim 3, characterized in that: The distance between the upper surface of the air pressure plate (410) and the inner bottom wall of the outer vertical tube (45) is greater than the distance between the upper surface of the horizontal end of the bending lever (418) and the inner top wall of the inner frame vertical rod (417); the difference in distance between the upper surface of the air pressure plate (410) and the inner bottom wall of the outer vertical tube (45) and between the upper surface of the horizontal end of the bending lever (418) and the inner top wall of the inner frame vertical rod (417) is greater than the distance between the upper surface of the force lever frame (419) and the bottom surface of the reducer rod (6).

5. The high efficiency filter for air pollution control according to claim 1, characterized in that: The damping structure (416) comprises a damping vertical plate (4161) and an elastic clamping plate (4162); a surface of the damping vertical plate (4161) close to the outer vertical pipe (45) is a groove-shaped structure with multiple upper and lower double inclined surfaces; one end of the elastic clamping plate (4162) is fixed to the through-frame (411); the other end of the elastic clamping plate (4162) is located inside a groove-shaped structure of the damping vertical plate (4161); and the damping vertical plate (4161) is connected to the block (43).

6. The high efficiency filter for air pollution control according to claim 1, characterized in that: The power twisting structure (5) comprises a twisting ring (51), a driving gear (53) and a power motor (52); the driving gear (53) is fixed to the output end of the power motor (52); the power motor (52) is fixed to the equipment base (3); the twisting ring (51) is rotatably sleeved on the upper end of the equipment base (3); the outer annular surface of the twisting ring (51) is meshed with the driving gear (53); the two ends of the reducing rod (6) are at different distances from the exhaust gas supply pipe (1); the end of the reducing rod (6) that is the farthest from the exhaust gas supply pipe (1) is fixed to the outer annular surface of the twisting ring (51).

7. The high efficiency filter for air pollution control according to claim 1, characterized in that: A collecting ring (8) is arranged above the equipment base (3), and the collecting ring (8) is coaxially fixed to the outer surface of the central column (2). A dust inlet hopper (11) is slidably sleeved on the lower end of the bent pipe (413), and the lower end of the dust inlet hopper (11) is connected to and installed on the upper surface of the collecting ring (8). A dust exhaust pipe (10) is connected to and installed on the bottom surface of the collecting ring (8), and the lower end of the collecting ring (8) is in an eccentric cone shape.

8. The high efficiency filter for air pollution control according to claim 1, characterized in that: The upper end of the inner blocking column (414) is conical, the upper end of the dust outlet pipe (412) is conical and concave, and the outer ring side of the upper end of the dust outlet pipe (412) is arranged as a cylindrical structure that matches the inner wall of the outer stand pipe (45).

9. The high efficiency filter for air pollution control according to claim 1, characterized in that: The outer surface of the inner frame upright (417) is sleeved with a stabilizing sleeve (9) in a damping sliding manner, and the stabilizing sleeve (9) is fixed to the outer surface of the bent pipe (413).

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