Filter for air pollution control

Abstract

The application relates to the filter field and particularly relates to a filter for air pollution treatment. The filter comprises a shell, a triggering assembly, a filtering mechanism and a central controller; the shell comprises a cylinder, an air inlet pipe communicated with the upper part of the cylinder, a collecting cylinder arranged at the bottom of the cylinder and an air outlet pipe penetratingly arranged at the top of the cylinder; the triggering assembly comprises a side shell communicated with the outer periphery of the cylinder, a push plate rotationally arranged at the top of the side shell, a support arranged in the side shell and a pressure sensor arranged on the support; the filtering mechanism comprises a filtering cylinder assembly, a guide vane assembly one arranged at the outer periphery of the top of the filtering cylinder assembly, a cleaning assembly arranged on the filtering cylinder assembly and a guide vane assembly two arranged at the outer periphery of the cleaning assembly; the central controller is in communication connection with the pressure sensor and is in control connection with the cleaning assembly. The filter can automatically clean the filtering cylinder assembly when the filtering performance and the filtering efficiency are reduced to a predetermined degree, the filter function is prevented from being lost, and the service life of the filtering cylinder assembly is prolonged.

Description

Technical Field

[0001] This invention relates to the field of filters, and in particular to a filter for air pollution control. Background Technology

[0002] Human production activities release pollutants into the atmosphere. Filters can be used to remove these pollutants, thus controlling air pollution. Existing filters generally use filter screens or cartridges to intercept dust particles in the atmosphere. However, after prolonged use, dust accumulates on the surface of the filter, gradually reducing its filtration performance and efficiency. Before regular replacement, the filter may have already lost its filtering function; furthermore, the lifespan of the filter is also relatively short. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the background technology by proposing a filter for air pollution control that can automatically clean the filter cartridge assembly when the filtration performance and filtration efficiency decrease to a predetermined level, preventing the filter cartridge assembly from losing its filtration function and extending the service life of the filter cartridge assembly.

[0004] The present invention provides a filter for air pollution control, comprising a housing, a triggering component, a filtration mechanism, and a central controller. The housing includes a cylindrical body, an inlet pipe connected to the upper part of the cylindrical body, a collection cylinder disposed at the bottom of the cylindrical body, and an outlet pipe installed through the top of the cylindrical body. The triggering component includes a side shell connected to the outer periphery of the cylindrical body, a push plate rotatably mounted on the top of the side shell, a bracket disposed inside the side shell, and a pressure sensor disposed on the bracket. The filtration mechanism includes a filter cylinder assembly, a first guide vane assembly disposed on the outer periphery of the top of the filter cylinder assembly, a cleaning component disposed on the filter cylinder assembly, and a second guide vane assembly disposed on the outer periphery of the cleaning component. The second guide vane assembly is located below the first guide vane assembly and is higher than the height of the collection cylinder. The central controller is communicatively connected to the pressure sensor and control-connected to the cleaning component. As dust gradually accumulates on the outer periphery of the filter cylinder assembly, the air pressure in the area between the housing and the filter cylinder assembly gradually increases, and the push plate gradually rotates towards the side where the pressure sensor is located. When the push plate presses against the pressure sensor, the central controller controls the cleaning component to clean the dust accumulated on the outer periphery of the filter cylinder assembly.

[0005] Preferably, the bracket is provided with an arc-shaped guide cylinder, and an arc-shaped slide rod is slidably provided on the guide cylinder. Both the guide cylinder and the slide rod are distributed around the rotation center axis of the push plate. A spring is connected between the bracket and the slide rod. The spring is located inside the guide cylinder, and the outer end of the slide rod is connected to the push plate.

[0006] Preferably, the filter cartridge assembly includes a fixed plate, a filter cartridge, and a bottom ring connected sequentially from top to bottom. The cross-section of the filter cartridge is distributed in an annular pleated shape, and filter holes are evenly distributed on the filter cartridge. The filter cartridge gradually tapers from top to bottom. The fixed plate is located at the bottom of the air outlet pipe. The fixed plate has evenly distributed air vents on the part located inside the air outlet pipe in the projection direction. The guide vane assembly is located on the outer circumferential surface of the fixed plate. The filter cartridge is made of metal, such as stainless steel.

[0007] Preferably, the cleaning assembly includes a bottom cylinder at the bottom of the bottom ring, a motor on a fixed plate, a rotating rod vertically positioned at the bottom of the motor, a bidirectional lead screw slidably engaged on the outer circumference of the rotating rod, a lead screw nut on the bottom cylinder and threadedly connected to the bidirectional lead screw, a rotating cylinder at the top of the bidirectional lead screw, and a rubber ring on the inner circumference of the bottom cylinder. Air jet holes are evenly distributed on the upper outer circumference of the rotating cylinder, and the outer circumference of the rotating cylinder is slidably sealed to the rubber ring. The rotating cylinder penetrates the bottom ring downwards, and a second guide vane assembly is positioned on the outer circumference of the bottom cylinder.

[0008] Preferably, multiple sets of striking components are arranged side by side along the vertical direction on the outer periphery of the rotating drum. The striking components include a fixed ring set on the outer periphery of the rotating drum, a striking rod rotatably set on the fixed ring via a rotating shaft, and a torsion spring sleeved on the outer periphery of the rotating shaft and connected at both ends to the fixed ring and the striking rod, respectively. Slots can be provided on both the fixed ring and the striking rod, and the two ends of the torsion spring are inserted into the slots at the two locations, respectively.

[0009] Preferably, a rubber ring one is provided on the outer circumference of the bottom cylinder, a rubber ring two is provided at the bottom of the cylinder, the middle of the collecting cylinder is vertically through and has an annular receiving cavity, the top of the receiving cavity is open, and the top of the collecting cylinder abuts against the rubber ring one and the rubber ring two. It also includes a spare cylinder with the same structure as the collection cylinder, as well as a switching component for switching the positions of the spare cylinder and the collection cylinder.

[0010] Preferably, the switching assembly includes a mounting frame and a support frame mounted on the cylinder, a spiral plate mounted on the support frame, a guide plate rotatably mounted on the top of the spiral plate via a second rotating shaft, a torsion spring II sleeved on the outer circumference of the second rotating shaft and connected at both ends to the spiral plate and the guide plate respectively, a rotating frame mounted on the collection cylinder and the spare cylinder respectively, a top frame mounted on the cylinder, and a telescopic mechanism vertically mounted on the top frame. The rotating frame is damped and rotated at the bottom of the telescopic mechanism. The spiral plate is distributed around the central axis of the rotating frame, and the number of spiral turns of the spiral plate is less than half a turn. The mounting frame has a vertical channel, and the guide plate is inclinedly overlapped on the inner side of the vertical channel.

[0011] Preferably, the mounting bracket has a first vertical plate and a second vertical plate, the bottom end of the second vertical plate is lower than the bottom end of the first vertical plate, a guide plate overlaps the side of the second vertical plate, and a gap is formed between the guide plate and the bottom end of the first vertical plate.

[0012] Preferably, the mounting frame is provided with a connecting frame, a cover plate is rotatably mounted on the connecting frame, and a stop is provided at the lower part of the connecting frame to limit the rotation range of the cover plate.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention can be used for the treatment of air pollution. When the filtration performance and filtration efficiency of the filter cartridge assembly are reduced to a predetermined level, the pressure sensor is automatically triggered to send a signal to the central controller. The central controller controls the cleaning component to automatically clean the filter cartridge assembly, remove the dust on the filter cartridge assembly, and finally collect it in the collection cylinder, preventing the filter cartridge assembly from losing its filtration function and extending the service life of the filter cartridge assembly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 for Figure 1 Structural sectional view; Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 for Figure 2 Enlarged view of the structure at point B; Figure 5 for Figure 2 Enlarged view of the structure at point C; Figure 6 This is a partial exploded view of an embodiment of the present invention; Figure 7 This is a partial structural cross-sectional view of an embodiment of the present invention after the addition of a utility cylinder and a switching assembly; Figure 8 for Figure 7 Enlarged view of the structure at point D.

[0015] Reference numerals: 1. Cylinder; 2. Inlet pipe; 3. Outlet pipe; 4. Fixing plate; 401. Vent hole; 41. Blade one; 5. Filter cartridge; 6. Bottom ring; 7. Bottom cylinder; 71. Blade two; 72. Rubber ring; 8. Motor; 9. Rotating rod; 10. Double-acting lead screw; 11. Lead screw nut; 12. Rotating cylinder; 121. Air jet hole; 13. Fixing ring; 14. Knob; 15. Rotating shaft one; 16. Torsion spring one; 17. Side shell; 18. Push plate; 1 9. Bracket; 20. Pressure sensor; 211. Guide cylinder; 212. Slide rod; 22. Collection cylinder; 221. Spare cylinder; 231. Rubber ring one; 232. Rubber ring two; 24. Mounting bracket; 241. Vertical channel; 25. Support frame; 26. Spiral plate; 27. Guide plate; 271. Rotating shaft two; 272. Torsion spring two; 28. Top frame; 29. ​​Telescopic mechanism; 30. Rotating frame; 31. Connecting frame; 32. Cover plate; 33. Stop. Detailed Implementation

[0016] Example 1: As Figures 1-6As shown in the figure, the filter for air pollution control proposed in this embodiment includes a housing, a triggering component, a filtering mechanism, and a central controller.

[0017] The outer casing includes a cylinder 1, an air inlet pipe 2 connected to the upper part of the cylinder 1, a collection cylinder 22 located at the bottom of the cylinder 1, and an air outlet pipe 3 installed through the top of the cylinder 1. The upper part of the cylinder 1 is conical, gradually expanding from top to bottom. The air inlet pipe 2 is horizontally oriented towards the inner side of the upper part of the cylinder 1 and is eccentrically distributed relative to the central axis of the cylinder 1, thereby blowing the gas to be filtered to the inner side of the upper part of the cylinder 1, and the gas flows spirally downward along the inner side of the conical shape. The collection cylinder 22 is specifically detachably connected to the bottom of the cylinder 1. For example, an internal thread is provided on the inner circumferential surface of the collection cylinder 22, and a matching external thread is provided on the outer circumferential surface of the cylinder 1. The collection cylinder 22 can be installed or removed through the threaded connection. After removal, the collection cylinder 22 can be cleaned to remove the dust collected inside.

[0018] like Figure 2 and Figure 3 As shown, the triggering assembly includes a side shell 17 connected to the outer periphery of the cylinder 1, a push plate 18 rotatably mounted on the top of the side shell 17, a bracket 19 disposed inside the side shell 17, and a pressure sensor 20 disposed on the bracket 19. The side shell 17 is inclined downwards, making it difficult for dust to remain on the inside. The side shell 17 has an arc-shaped surface distributed around the rotational axis of the push plate 18, and the outer end of the push plate 18 contacts the arc-shaped surface. When no air is supplied to the cylinder 1, the push plate 18 hangs down naturally. When air is supplied to the cylinder 1, the air pressure in the area between the outer shell and the filter mechanism increases, and the gas pushes the push plate 18 towards the pressure sensor 20. An arc-shaped guide cylinder 211 is disposed on the bracket 19, and an arc-shaped slide rod 212 is slidably disposed on the guide cylinder 211. Both the guide cylinder 211 and the slide rod 212 are distributed around the rotational axis of the push plate 18. A spring connects the bracket 19 and the slide rod 212. The spring is located inside the guide cylinder 211, and the outer end of the slide rod 212 is connected to the push plate 18. By setting the spring, the rotation of the push plate 18 and the slide rod 212 can be buffered.

[0019] like Figure 2 and Figure 6As shown, the filtration mechanism includes a filter cartridge assembly, a first guide vane assembly disposed on the outer periphery of the top of the filter cartridge assembly, a cleaning assembly disposed on the filter cartridge assembly, and a second guide vane assembly disposed on the outer periphery of the cleaning assembly. The second guide vane assembly is located below the first guide vane assembly and above the height of the collection cylinder 22. The first guide vane assembly includes multiple blades 41 evenly distributed around the filter cartridge assembly. The second guide vane assembly includes multiple blades 71 evenly distributed around the filter cartridge assembly. Both blades 41 and 71 are inclined and in the same direction. The effective filtration area of ​​the filter cartridge assembly is located vertically between the first and second guide vane assemblies. When the gas to be filtered enters the cylinder 1 from the inlet pipe 2, it is first spirally guided by the first guide vane assembly, making it easier for the gas to flow to different positions on the outer periphery of the filter cartridge assembly for filtration. The filtered gas enters the inner side of the filter cartridge assembly and is discharged upward through the outlet pipe 3. The filtered dust passes through the airflow guide vane assembly 2 with the airflow and falls into the collection cylinder 22. The multiple inclined blades 71 in the guide vane assembly 2 can prevent the dust from flowing back upward.

[0020] like Figures 4-6 As shown, the filter cartridge assembly includes a fixed plate 4, a filter cartridge 5, and a bottom ring 6 connected sequentially from top to bottom. The filter cartridge 5 has a cross-section with annular pleats. The bottom ring 6 has evenly distributed toothed grooves on its outer circumference. The outer edge of the top of the toothed grooves connects with the pleated part at the bottom end of the filter cartridge 5. This prevents dust removed from the filter cartridge 5 from easily remaining on the bottom ring 6. If the bottom ring 6 protrudes outward relative to the bottom end of the filter cartridge 5, dust is more likely to remain at the protruding part. The filter cartridge 5 has evenly distributed filter holes, and the filter cartridge 5 gradually tapers from top to bottom. After being filtered by the filter cartridge 5, dust is less likely to remain on the outer circumference of the filter cartridge 5, and it is also easier for dust to fall off the outer circumference of the filter cartridge 5 when cleaned by the cleaning component. The fixed plate 4 is located at the bottom of the air outlet pipe 3. The fixed plate 4 has evenly distributed vent holes 401 on its inner side in the projection direction of the air outlet pipe 3. The gas filtered by the filter cartridge assembly continues to flow upward through the vent holes 401 and is discharged through the air outlet pipe 3. The guide vane assembly is set on the outer circumference of the fixed plate 4, and the filter cartridge 5 is made of metal, such as stainless steel, which is not easy to rust.

[0021] The cleaning assembly includes a base cylinder 7 located at the bottom of the base ring 6, a motor 8 mounted on the fixed plate 4, a rotating rod 9 vertically mounted at the bottom of the motor 8, a double-acting screw 10 slidably engaged on the outer circumference of the rotating rod 9, a screw nut 11 mounted on the base cylinder 7 and threadedly connected to the double-acting screw 10, a rotating cylinder 12 located at the top of the double-acting screw 10, and a rubber ring 72 located on the inner circumference of the base cylinder 7. The rubber ring 72 prevents air leakage between the rotating cylinder 12 and the base cylinder 7. The rotating rod 9 has a boss on its outer circumference, and the double-acting screw 10 has a slide for the rotating rod 9 to slide. The slide includes an outwardly protruding locking channel, and the boss is slidably engaged at the locking channel. The double-acting screw 10 has two raceways, a first raceway and a second raceway, which are coaxially distributed and have opposite helical directions. The top ends of the first raceway and the second raceway are connected, and their bottom ends are also connected. Air jet holes 121 are evenly distributed on the upper outer circumference of the rotating drum 12. The outer circumferential surface of the rotating drum 12 is slidably sealed to the rubber ring 72. The rotating drum 12 passes through the bottom ring 6 downwards. The guide vane assembly 2 is set on the outer circumferential surface of the bottom drum 7.

[0022] When motor 8 is running, it drives rotor 9 to rotate, which in turn drives double-acting lead screw 10 to rotate. Double-acting lead screw 10 moves downwards spirally on lead screw nut 11 via a raceway. Rotary cylinder 12 moves downwards spirally with double-acting lead screw 10, and the space between rotary cylinder 12 and bottom cylinder 7 gradually shrinks. Gas gradually exits from the inside to the outside, i.e., it is ejected outwards through jet nozzle 121 and onto filter cartridge 5, blowing away dust adhering to the filter holes of filter cartridge 5. The direction of air jet dust removal is a spiral from top to bottom, and the effective area can effectively cover all filter holes of filter cartridge 5. After air jet dust removal is completed, motor 8 continues to drive rotor 9 to rotate, and double-acting lead screw 10 moves upwards spirally on lead screw nut 11 via another raceway. Rotary cylinder 12 moves upwards spirally with double-acting lead screw 10, and gas inside filter cartridge 5 gradually enters the inside of rotary cylinder 12 through jet nozzle 121 until rotary cylinder 12 moves to its initial position.

[0023] like Figure 2 , Figure 5 and Figure 6As shown, multiple sets of striking components are arranged side by side in the vertical direction on the outer periphery of the rotating cylinder 12. The striking components include a fixing ring 13 set on the outer periphery of the rotating cylinder 12, a striking rod 14 rotatably mounted on the fixing ring 13 via a rotating shaft 15, and a torsion spring 16 sleeved on the outer periphery of the rotating shaft 15 and connected at both ends to the fixing ring 13 and the striking rod 14 respectively. The outer end of the striking rod 14 abuts against the inner periphery of the filter cylinder 5. For the installation of the torsion spring 16, slots can be provided on both the fixing ring 13 and the striking rod 14, and the two ends of the torsion spring 16 can be inserted into the slots at the two locations respectively. Because the filter cartridge 5 has a pleated structure, as the striking assembly moves spirally with the rotating drum 12, the striking rod 14 can pass through different pleated sections in sequence, striking different heights on the inner side of the filter cartridge 5. The further down the striking rod 14 moves, the greater the degree of torsion of the torsion spring 16, but the striking rod 14 can still strike the filter cartridge 5, shaking off the dust adhering to the outer circumference of the filter cartridge 5, thus providing auxiliary dust removal on top of the dust removal by the gas jet nozzle 121. Because the output end of the motor 8 always drives the rotating rod 9 to rotate in the same direction during the spiral descent and spiral ascent of the rotating drum 12, the rotating drum 12 always rotates in one direction in the projection direction, and the striking rod 14 also always rotates in one direction in the projection direction, there will be no jamming between the striking rod 14 and the filter cartridge 5.

[0024] The central controller is mounted on the cylinder 1 and is communicatively connected to the pressure sensor 20 and controlled by the cleaning assembly. A communication module is installed on the filter, allowing users to remotely send control signals, which are then transmitted to the central controller for remote control of the filter. As dust gradually accumulates on the outer periphery of the filter cartridge assembly, the filter holes at different locations on the filter cartridge 5 become increasingly clogged. With continued input of the gas to be filtered, the difficulty of passing the gas through the filter holes gradually increases, leading to a gradual increase in air pressure between the outer shell and the filter cartridge assembly. This pressure increases the pressure on the push plate 18, which rotates towards the side where the pressure sensor 20 is located. When the push plate 18 presses against the pressure sensor 20, it indicates that the filter holes on the filter cartridge 5 are clogged to the point where cleaning is necessary. The pressure sensor 20 sends a signal to the central controller, which then controls the cleaning assembly to remove the dust adhering to the outer periphery of the filter cartridge assembly. During each cleaning process, the rotating cylinder 12 performs at least one spiral downward and one spiral upward stroke. After the dust on the surface of filter cartridge 5 is cleaned, the gas can be filtered normally through filter cartridge 5. The air pressure inside the filter decreases, and push plate 18 rotates in the opposite direction, disengaging from pressure sensor 20.

[0025] This embodiment can be used for the treatment of air pollution. When the filtration performance and filtration efficiency of the filter cartridge assembly decrease to a predetermined level, the pressure sensor 20 is automatically triggered to send a signal to the central controller. The central controller then controls the cleaning component to automatically clean the filter cartridge assembly. Through the combined dust removal of air jet dust removal and knocking vibration dust removal, the dust on the filter cartridge 5 can be cleaned off and discharged from the filter holes, and finally collected in the collection cylinder 22. This prevents the filter cartridge 5 in the filter cartridge assembly from losing its filtration function and can extend the service life of the filter cartridge assembly.

[0026] Example 2: Figures 1-8 As shown, this embodiment of the air pollution control filter, compared to Embodiment 1, includes a spare cylinder 221 with the same structure as the collection cylinder 22, and a switching component for switching the positions of the spare cylinder 221 and the collection cylinder 22. For the collection cylinder 22 and the spare cylinder 221, one cylinder is positioned for dust collection, while the other cylinder serves as a spare. The user remotely sends a control signal, and the switching component automatically switches the positions of the two cylinders via a central controller.

[0027] Additionally, a rubber ring 231 is provided on the outer circumference of the bottom cylinder 7, and a rubber ring 232 is provided at the bottom of the cylinder body 1. The collecting cylinder 22 has a vertically penetrating middle section with an annular receiving cavity, the top of which is open. The top of the collecting cylinder 22 abuts against the rubber rings 231 and 232, at which point the collecting cylinder 22 is in a dust-collecting state. When the spare cylinder 221 is switched with the collecting cylinder 22, the top of the spare cylinder 221 abuts against the rubber rings 231 and 232 and is in a dust-collecting state.

[0028] like Figure 7 and Figure 8 As shown, the switching assembly includes a mounting frame 24 and a support frame 25 mounted on the cylinder 1, a spiral plate 26 mounted on the support frame 25, a guide plate 27 rotatably mounted on the top of the spiral plate 26 via a second rotating shaft 271, a torsion spring 272 sleeved on the outer circumference of the second rotating shaft 271 and connected at both ends to the spiral plate 26 and the guide plate 27 respectively, a rotating frame 30 mounted at both ends on the collection cylinder 22 and the spare cylinder 221 respectively, a top frame 28 mounted on the cylinder 1, and a telescopic mechanism 29 vertically mounted on the top frame 28. The rotating frame 30 includes a vertical cylindrical part and two horizontal bars symmetrically connected on both sides of the cylindrical part. The telescopic mechanism 29 is an electric push rod or a cylinder. The rotating frame 30 is damped and rotated at the bottom end of the telescopic mechanism 29. The spiral plate 26 is distributed around the central axis of the rotating frame 30, and the number of spiral turns of the spiral plate 26 is less than half a turn. The mounting frame 24 has a vertical channel 241, and the guide plate 27 is inclinedly overlapped on the inner side of the vertical channel 241.

[0029] When the telescopic mechanism 29 extends, the rotating frame 30 first moves downward along the vertical channel 241. The rotating frame 30 drives the collecting cylinder 22 and the spare cylinder 221 to move downward simultaneously. When the rotating frame 30 moves to the guide plate 27, the collecting cylinder 22 disengages from the bottom cylinder 7. As the telescopic mechanism 29 continues to extend, the rotating frame 30 slides onto the spiral plate 26 under the guidance of the guide plate 27 and slides on the spiral plate 26. When the telescopic mechanism 29 extends to its full extent, the rotating frame 30 rotates 180°, thus changing the distribution of the collecting cylinder 22 and the spare cylinder 221. Because the damping rotation of the rotating frame 30 is set at the bottom of the telescopic mechanism 29, the rotating frame 30 will not continue to rotate to a position exceeding 180° due to inertia after the telescopic mechanism 29 extends to its full extent. Next, the telescopic mechanism 29 retracts, and the rotating frame 30, collecting cylinder 22, and spare cylinder 221 move vertically upward. Under the guidance of the vertical channel 241, the rotating frame 30 continues to move upward. During the upward movement, it pushes open the guide plate 27, and the second torsion spring 272 is twisted. After the rotating frame 30 disengages from the guide plate 27, the guide plate 27 reverses and resets under the action of the second torsion spring 272, and abuts against the inner wall of the vertical channel 241 again. After the telescopic mechanism 29 retracts to its final position, the top of the spare cylinder 221 abuts against the first rubber ring 231 and the second rubber ring 232, thus completing the switching between the collecting cylinder 22 and the spare cylinder 221. The user can then clean the dust inside the collecting cylinder 22. During the above switching process, the rotating frame 30 needs to be vertically guided by the vertical channel 241 so that the collecting cylinder 22 moves vertically downward from the outer periphery of the bottom cylinder 7 before the rotating frame 30 is rotated to avoid the bottom cylinder 7 interfering with the switching process. The above-described switching process between the collection cylinder 22 and the spare cylinder 221 is automated and highly efficient. Similarly, when the spare cylinder 221 needs to be switched out, the collection cylinder 22, after being cleaned of dust, is switched to a position abutting against rubber rings 231 and 232 for dust collection.

[0030] like Figure 8 As shown, the mounting frame 24 has a first vertical plate and a second vertical plate. The bottom end of the second vertical plate is lower than the bottom end of the first vertical plate. The guide plate 27 overlaps the side of the second vertical plate, and a notch is formed between the guide plate 27 and the bottom end of the first vertical plate. When the rotating frame 30 moves down, it can move from the guide plate 27 to the spiral plate 26, and the first vertical plate will not interfere with the movement process.

[0031] like Figure 7As shown, a connecting frame 31 is provided on the mounting bracket 24, and a cover plate 32 is rotatably mounted on the connecting frame 31. A baffle 33 is provided at the lower part of the connecting frame 31 to limit the rotation range of the cover plate 32. When the collecting cylinder 22 is switched from below the cylinder body 1 to the position of the previously used spare cylinder 221, the cover plate 32 covers the collecting cylinder 22. Before the user cleans the dust inside the collecting cylinder 22, the cover plate 32 covers it to prevent the dust inside the collecting cylinder 22 from escaping. When the user cleans the dust inside the collecting cylinder 22, the cover plate 32 is opened upwards to directly clean the dust collected inside the collecting cylinder 22. After cleaning, the cover plate 32 is lowered and rotated downwards. The baffle 33 limits the rotation position, allowing the cover plate 32 to rotate downwards to a horizontal position.

[0032] This embodiment can switch the positions of the collection cylinder 22 and the spare cylinder 221 via a switching component, allowing the cylinder that has collected dust to be moved out and the clean cylinder to the dust collection position. The dust in the moved-out cylinder can then be cleaned out on-site at the user's convenience.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A filter for air pollution control, characterized in that, include: The outer casing includes a cylinder, an air inlet pipe connected to the upper part of the cylinder, a collection cylinder disposed at the bottom of the cylinder, and an air outlet pipe installed through the top of the cylinder. The triggering assembly includes a side shell connected to the outer periphery of the cylinder, a push plate rotatably mounted on the side shell at the top, a bracket disposed inside the side shell, and a pressure sensor disposed on the bracket; The filtration mechanism includes a filter cartridge assembly, a first guide vane assembly disposed on the outer periphery of the top of the filter cartridge assembly, a cleaning assembly disposed on the filter cartridge assembly, and a second guide vane assembly disposed on the outer periphery of the cleaning assembly. The second guide vane assembly is located below the first guide vane assembly and is higher than the height of the collection cartridge. The central controller communicates with the pressure sensor and controls the cleaning component. As dust gradually accumulates on the outer periphery of the filter cartridge assembly, the air pressure in the area between the outer shell and the filter cartridge assembly gradually increases, and the push plate gradually rotates towards the side where the pressure sensor is located. When the push plate presses on the pressure sensor, the central controller controls the cleaning component to clean the dust accumulated on the outer periphery of the filter cartridge assembly. The filter cartridge assembly includes a fixed plate, a filter cartridge, and a bottom ring connected sequentially from top to bottom. The cross-section of the filter cartridge is distributed in an annular pleated shape, and filter holes are evenly distributed on the filter cartridge. The filter cartridge gradually shrinks from top to bottom. The fixed plate is set at the bottom of the air outlet pipe. The fixed plate has evenly distributed air vents on the part of the part of the fixed plate located inside the air outlet pipe in the projection direction. The guide vane assembly is set on the outer circumferential surface of the fixed plate. The cleaning assembly includes a bottom cylinder at the bottom of the bottom ring, a motor on a fixed plate, a rotating rod vertically at the bottom of the motor, a double-acting screw slidably locked on the outer circumference of the rotating rod, a screw nut on the bottom cylinder and threadedly connected to the double-acting screw, a rotating cylinder at the top of the double-acting screw, and a rubber ring on the inner circumference of the bottom cylinder. Air jet holes are evenly distributed on the upper outer circumference of the rotating cylinder. The outer circumference of the rotating cylinder is slidably sealed to the rubber ring. The rotating cylinder penetrates the bottom ring downwards. A second guide vane assembly is set on the outer circumference of the bottom cylinder. Multiple sets of striking components are arranged side by side along the vertical direction on the outer periphery of the rotating drum. The striking components include a fixed ring set on the outer periphery of the rotating drum, a striking rod rotatably mounted on the fixed ring via a rotating shaft, and a torsion spring sleeved on the outer periphery of the rotating shaft and connected at both ends to the fixed ring and the striking rod, respectively.

2. The filter for air pollution control according to claim 1, characterized in that, The bracket is equipped with an arc-shaped guide cylinder, and an arc-shaped slide rod is slidably mounted on the guide cylinder. Both the guide cylinder and the slide rod are distributed around the rotation center axis of the push plate. A spring connects the bracket and the slide rod, with the spring located inside the guide cylinder and the outer end of the slide rod connected to the push plate.

3. The filter for air pollution control according to claim 1, characterized in that, A rubber ring 1 is provided on the outer circumference of the bottom cylinder, a rubber ring 2 is provided at the bottom of the cylinder, the middle of the collecting cylinder is vertically connected and has an annular storage cavity, the top of the storage cavity is open, and the top of the collecting cylinder abuts against the rubber ring 1 and the rubber ring 2. It also includes a spare cylinder with the same structure as the collection cylinder, as well as a switching component for switching the positions of the spare cylinder and the collection cylinder.

4. A filter for air pollution control according to claim 3, characterized in that, The switching assembly includes a mounting frame and a support frame mounted on the cylinder, a spiral plate mounted on the support frame, a guide plate rotated on the top of the spiral plate via a second rotating shaft, a torsion spring mounted on the outer circumference of the second rotating shaft and connected at both ends to the spiral plate and the guide plate respectively, a rotating frame mounted on the collection cylinder and the spare cylinder respectively, a top frame mounted on the cylinder, and a telescopic mechanism vertically mounted on the top frame. The rotating frame is damped and rotated at the bottom of the telescopic mechanism. The spiral plates are distributed around the central axis of the rotating frame. The mounting frame has a vertical channel, and the guide plate is inclined and overlaps the inner side of the vertical channel.

5. A filter for air pollution control according to claim 4, characterized in that, The mounting bracket has a first vertical plate and a second vertical plate. The bottom end of the second vertical plate is lower than the bottom end of the first vertical plate. A guide plate overlaps the side of the second vertical plate, and a gap is formed between the guide plate and the bottom end of the first vertical plate.

6. A filter for air pollution control according to claim 4, characterized in that, The mounting frame is equipped with a connecting frame, and a cover plate is rotatably mounted on the connecting frame. A stop is provided at the bottom of the connecting frame to limit the rotation range of the cover plate.

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