Comprehensive purification control device for atmospheric environment

Abstract

The invention provides an atmospheric environment comprehensive purification control device, and relates to the field of atmospheric environment governance. The outer side face of the air suction cylinder is rotationally connected with a rotating cylinder and welded with a filtering cylinder. An exhaust pipe is welded to the outer side face of the filtering cylinder, the left end of the exhaust pipe is connected with a gas conveying pipe through a bolt, a water pump machine is installed on the outer side face of the filtering cylinder, a water conveying hose is installed on the water pump machine, and a water spraying pipe is installed at the other end of the water conveying hose; a driving gear is mounted on a motor shaft of the lifting motor; through the arrangement of a rotary drum, a lifting frame, a water spraying pipe and a high-pressure spray head, all-directional automatic cleaning of the filter screen plate in the filter equipment is realized under the condition of not depending on disassembly of parts; the problems that in traditional air filtering and purifying equipment, a filter screen needs to be independently disassembled and cleaned, a large amount of disassembly and assembly operation time is consumed, and dust on the filter screen is scattered and diffused in the disassembly and assembly cleaning process are solved.

Description

Technical Field

[0001] This invention belongs to the field of atmospheric environmental governance, and more specifically, it relates to a comprehensive atmospheric environmental purification and control device. Background Technology

[0002] Atmospheric environmental governance refers to a series of systematic air pollution control measures taken to improve air quality, prevent and control air pollution, and protect the ecological environment and human health. This work can reduce air pollutant emissions, mitigate atmospheric environmental risks, and promote the sustainable development of atmospheric ecosystems.

[0003] Currently, in atmospheric environmental governance, to effectively prevent gaseous dust pollutants emitted from factories from being directly released into the atmosphere, it is usually necessary to install gas filtration and purification equipment at the end of the dust gas emission outlet to intercept and filter the gaseous dust emitted by the factory. However, during the process of intercepting dust particles in the gas filtration and purification equipment, dust particles will accumulate on the filter screen, causing the air-permeable mesh of the filter screen to become clogged, reducing the air permeability and filtration efficiency of the emitted gas. Therefore, it is necessary to remove the filter screen cylinder from the gas filtration and purification equipment separately for manual cleaning. It can be seen that the separate disassembly and cleaning operation of the filter screen cylinder in traditional gas filtration and purification equipment not only consumes a lot of disassembly and assembly time and reduces the working efficiency of the gas filtration and purification equipment, but also easily causes dust to scatter and spread on the filter screen during the disassembly process, which has an adverse effect on the respiratory health of the operators. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an integrated atmospheric environment purification and control device to solve the problems of traditional air filtration and purification equipment where the filter screen needs to be disassembled and cleaned separately, which consumes a lot of time in disassembly and assembly operations, as well as the scattering and diffusion of dust on the filter screen during disassembly and assembly cleaning.

[0005] This invention provides a comprehensive atmospheric environment purification and control device, including a frame; a base plate is welded to the bottom of the frame, a ring frame is welded to the top of the frame, a filter cylinder is welded to the inner side of the ring frame, a support plate is welded to the outer side of the frame, and a control unit is mounted on the front side of the support plate; it also includes an air intake cylinder, a sealing column, and a purification device; a dust filter frame is welded to the outer side of the air intake cylinder, a filter screen is mounted on the outer side of the dust filter frame, a rotating cylinder is rotatably connected to the outer side of the air intake cylinder, and a fan motor is mounted on the upper side of the air intake cylinder, with the fan motor shaft... A rotating column is installed on the top, and a filter cylinder is welded to the outer side of the air intake cylinder; an exhaust pipe is welded to the outer side of the filter cylinder, and an air supply pipe is bolted to the left end of the exhaust pipe; a water pump is installed on the outer side of the filter cylinder, and a water supply hose is installed at the outlet of the water pump; a water spray pipe is installed at the other end of the water supply hose; a lifting frame is installed on the outer side of the water spray pipe; a lifting motor is installed on the upper side of the filter cylinder, and a drive gear is installed on the motor shaft of the lifting motor; a cover is welded to the lower side of the sealing column, and a handrail is welded to the outer side of the cover.

[0006] Furthermore, the purification device includes a placement cylinder, a purification shell, an exhaust shell, activated carbon blocks, and a sealing gasket; the top of the purification shell is connected to a gas supply pipe by bolts, the bottom of the purification shell is screwed to an exhaust shell, a sealing gasket is adhered to the upper side of the exhaust shell, and a placement cylinder is welded to the inner side of the exhaust shell; the placement cylinder is a cylindrical structure with an open upper side, the bottom of the cylinder structure of the placement cylinder is densely covered with a large number of vertically penetrating vent holes, and activated carbon blocks are placed on the inner side of the cylinder structure of the placement cylinder.

[0007] Furthermore, the lifting frame is a cylindrical structure with an opening on the lower side. The upper side of the cylindrical structure of the lifting frame is provided with a through threaded hole. The outer side of the lifting frame is provided with two sets of cuboid protrusions near the top. The cuboid protrusions of the lifting frame are embedded in two sets of long grooves on the inner side of the filter cylinder. A sealing sleeve is adhered to the outer side of the lifting frame near the bottom.

[0008] Furthermore, the outer side of the rotating drum near the bottom is provided with a ring plate structure, and the outer side of the ring plate structure of the rotating drum is surrounded by an external tooth structure. The drive gear is meshed with the external tooth structure of the ring plate of the rotating drum. The outer side of the rotating drum is provided with a threaded structure, and the threaded structure on the outer side of the rotating drum is meshed with the threaded through hole of the lifting frame.

[0009] Furthermore, the inner side of the filter cylinder is provided with two sets of elongated grooves near the top, and the inner side of the filter cylinder is a concentrically inclined conical structure near the bottom. The bottom of the conical structure is provided with a through hole that runs vertically through the top and bottom, and the inner side of the through hole of the filter cylinder is provided with threads.

[0010] Furthermore, the number of water spray pipes is three sets, and the water spray pipes are arranged at equal intervals from top to bottom. Each set of water spray pipes is a circular hollow tube structure. Ten sets of high-pressure nozzles are installed on the inner side of the circular hollow tube structure of the water spray pipe. The high-pressure nozzles are distributed in a ring array around the central axis of the water spray pipe.

[0011] Furthermore, six sets of fan discs are welded to the outer side of the rotating column. The six sets of fan discs are arranged at equal intervals from top to bottom and are distributed inside the air intake cylinder.

[0012] Furthermore, the dust filter rack is a cylindrical structure that runs vertically through the body. The outer side of the dust filter rack is provided with four sets of rectangular through slots that run vertically through the body. A filter screen is installed on the inner side of the rectangular through slots of the dust filter rack. The inner side of the dust filter rack near the bottom is a conical structure that slopes inward.

[0013] Furthermore, the outer side of the air intake cylinder is provided with eight sets of elongated through grooves near the bottom. The elongated through grooves are arranged in a circular array around the vertical central axis of the air intake cylinder. The eight sets of elongated through grooves of the air intake cylinder are horizontally opposite to the filter screen plate. A circular through hole is provided at the center of the lower side of the air intake cylinder.

[0014] Furthermore, the cover is a circular cover structure with an opening on the upper side. The inner wall of the circular cover structure is provided with a threaded structure. The threaded structure of the cover is engaged with the threaded structure on the outer side of the filter cylinder. A sealing ring is bonded to the inner side of the cover structure. A sealing post is welded to the center of the inner side of the cover structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, the screw transmission structure between the rotating drum and the lifting frame drives three sets of annular water spray pipes to rise and fall along the inner wall of the filter cylinder. Ten sets of high-pressure nozzles are arranged in a ring array to wash the filter screen on the outer side of the dust filter frame. This eliminates the traditional operation mode of air filtration and purification equipment, which requires the filter screen to be removed from the purification equipment for cleaning. It realizes all-round automated cleaning of the filter screen in the filtration equipment, solves the problem of time-consuming and laborious filter screen disassembly, and allows the filter screen to be cleaned without relying on component disassembly, greatly simplifying the filter screen cleaning process.

[0016] 2. In this invention, the adsorption effect of the activated carbon blocks inside the placement cylinder and the interception of the filter screen form a complementary and synergistic purification system. The filter screen intercepts larger dust particles, while the activated carbon blocks perform deep treatment on the remaining small pollutants and odors, thereby improving the purification efficiency of air pollutants. This effectively avoids the limitation of the filter screen interception purification method in being unable to purify odors, ensuring that the purified gas is cleaner. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the right-side view structure of the present invention.

[0019] Figure 3 This is a front view structural diagram of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure from a bottom view of the present invention.

[0021] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 6 This is the invention Figure 5 Enlarged structural diagram of part A in the middle.

[0023] Figure 7 This is the invention Figure 5 Enlarged structural diagram of part B in the middle.

[0024] Figure 8 This is the invention Figure 5 Enlarged structural diagram of part C in the middle.

[0025] Figure 9 This is the invention Figure 5 Enlarged structural diagram of part D in the middle.

[0026] Figure 10 This is a schematic diagram of the purification device structure of the present invention.

[0027] Figure 11 This is a cross-sectional structural diagram of the purification device of the present invention.

[0028] Figure label: 1. Base plate; 2. Erecting the frame; 3. Frame; 4. Water pump; 5. Water delivery hose; 6. Water spray pipe; 7. Spray nozzle; 8. Lifting frame; 9. Drive gear; 10. Lifting motor; 11. Rotating drum; 12. Filter tank; 13. Air suction pump; 14. Fan motor; 15. Rotating column; 16. Fan plate; 17. Dust filter rack; 18. Filter screen; 19. Sealing column; 20. Cap; 21. Sealing ring; 22. Gas pipeline; 23. Purification device; 2301. Placement cylinder; 2302. Purification shell; 2303. Exhaust shell; 2304. Activated carbon block; 2305. Sealing gasket; 24. Exhaust pipe; 25. Sealing sleeve; 26. Control unit; 27. Support plate; 28. Handrails. Detailed Implementation

[0029] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0030] like Figures 1-11 As shown, the present invention provides an integrated atmospheric environment purification and control device, including a frame 2; a base plate 1 is welded to the bottom end of the frame 2, a ring frame 3 is welded to the top end of the frame 2, a filter cylinder 12 is welded to the inner side of the ring frame 3, a support plate 27 is welded to the outer side of the frame 2, and a control unit 26 is installed on the front side of the support plate 27; it also includes an air intake cylinder 13, a sealing column 19, and a purification device 23; a dust filter frame 17 is welded to the outer side of the air intake cylinder 13, a filter screen plate 18 is installed on the outer side of the dust filter frame 17, a rotating cylinder 11 is rotatably connected to the outer side of the air intake cylinder 13, and a fan motor 14 is installed on the upper side of the air intake cylinder 13. A rotating column 15 is mounted on the shaft, and a filter cylinder 12 is welded to the outer side of the air intake cylinder 13; an exhaust pipe 24 is welded to the outer side of the filter cylinder 12, and an air supply pipe 22 is bolted to the left end of the exhaust pipe 24; a water pump 4 is mounted on the outer side of the filter cylinder 12, and a water supply hose 5 is installed at the outlet of the water pump 4; a water spray pipe 6 is installed at the other end of the water supply hose 5; a lifting frame 8 is mounted on the outer side of the water spray pipe 6; a lifting motor 10 is mounted on the upper side of the filter cylinder 12, and a drive gear 9 is mounted on the motor shaft of the lifting motor 10; a cover 20 is welded to the lower side of the sealing column 19, and a handrail 28 is welded to the outer side of the cover 20.

[0031] In this embodiment of the invention, the purification device 23 includes a placement cylinder 2301, a purification shell 2302, an exhaust shell 2303, an activated carbon block 2304, and a sealing gasket 2305. A gas supply pipe 22 is bolted to the top of the purification shell 2302, and the exhaust shell 2303 is screwed to the bottom of the purification shell 2302. A sealing gasket 2305 is adhered to the upper side of the exhaust shell 2303, and the placement cylinder 2301 is welded to the inner side of the exhaust shell 2303. The placement cylinder 2301 is a cylindrical structure with an open upper side. The bottom of the cylinder structure of the placement cylinder 2301 is densely covered with numerous vertically penetrating ventilation holes. Activated carbon blocks 2304 are placed on the inner side of the cylinder structure 1. Due to the extremely rich pore structure of the activated carbon blocks 2304, they can efficiently adsorb various pollutants in the gas. When the dust-laden gas emitted from the factory enters the purification shell 2302 through the gas transmission pipe 22, the gas flows downward and comes into contact with the activated carbon blocks 2304 placed in the placement cylinder 2301. Dust particles, harmful gas molecules, etc. in the gas will be adsorbed by the pores of the activated carbon blocks 2304, achieving deep purification of the air. The purified air is discharged to the outside through the vent holes at the bottom of the placement cylinder 2301 and the exhaust shell 2303.

[0032] In this embodiment of the invention, the lifting frame 8 is a cylindrical structure with an opening on the lower side. The center of the upper side of the cylindrical structure of the lifting frame 8 is provided with a through-hole threaded hole. The outer side of the lifting frame 8 is provided with two sets of cuboid protrusions near the top. The cuboid protrusions of the lifting frame 8 are embedded in two sets of elongated grooves on the inner side of the filter cylinder 12. The groove wall of the elongated groove of the filter cylinder 12 is rotated and limited by the cuboid protrusions of the lifting frame 8, so as to avoid the thread contact friction between the thread on the outer side of the rotating cylinder 11 and the thread on the inner side of the threaded through-hole of the lifting frame 8 causing the lifting frame 8 to rotate horizontally, and ensure that the lifting frame 8 moves vertically and stably along the elongated groove of the filter cylinder 12. A sealing sleeve 25 is adhered to the outer side of the lifting frame 8 near the bottom.

[0033] In this embodiment of the invention, a ring plate structure is provided on the outer side of the rotating drum 11 near the bottom end. An external tooth structure is provided around the outer side of the ring plate structure of the rotating drum 11. The drive gear 9 is meshed with the external tooth structure of the ring plate of the rotating drum 11. A threaded structure is provided on the outer side of the rotating drum 11. The threaded structure on the outer side of the rotating drum 11 is meshed with the threaded through hole of the lifting frame 8. During the process of the lifting motor 10 driving the drive gear 9 to rotate, the drive gear 9 drives the rotating drum 11 to rotate on the outer side of the air intake 13. The rotating drum 11 then drives the meshed lifting frame 8 to move vertically up and down, so that the lifting frame 8 drives the water spray pipe 6 to move to the horizontal relative position of the filter screen plate 18, so that the water spray pipe 6 moves and washes the filter screen plate 18, completing the automatic cleaning of the filter screen plate 18 in the filter cylinder 12.

[0034] In this embodiment of the invention, the inner side of the filter cylinder 12 is provided with two sets of elongated grooves near the top. The inner side of the filter cylinder 12 is a concentrically inclined conical structure near the bottom. The bottom of the conical structure is provided with a through hole that runs vertically through the filter cylinder. When the dust particles are washed off through the conical structure at the bottom of the inner side of the filter cylinder 12, they flow into the through hole of the filter cylinder 12 by gravity along the conical structure of the filter cylinder 12. This ensures that the dust particles are completely discharged from the through hole of the filter cylinder 12 with the water flow, and avoids the accumulation of dust particles at the bottom of the filter cylinder 12. The inner side of the through hole of the filter cylinder 12 is provided with threads.

[0035] In this embodiment of the invention, there are three sets of water spray pipes 6, which are arranged at equal intervals from top to bottom. Each set of water spray pipes 6 is a circular hollow tube structure. Ten sets of high-pressure nozzles 7 are installed on the inner side of the circular hollow tube structure of the water spray pipe 6. The high-pressure nozzles 7 are arranged in a circular array around the central axis of the water spray pipe 6. The three sets of water spray pipes 6 perform high-pressure circumferential rinsing on the filter screen 18 installed on the outer side of the dust filter rack 17 from different heights, avoiding blind spots in the rinsing of the filter screen 18. The high-pressure water flow has a strong impact force and can easily wash away the stubborn dust on the filter screen 18, thereby thoroughly cleaning the inner filter screen 18 in a short time, reducing the need for manual cleaning and improving the cleaning efficiency of the filter screen 18.

[0036] In this embodiment of the invention, six sets of fan discs 16 are welded to the outer side of the rotating column 15. The six sets of fan discs 16 are arranged at equal intervals from top to bottom and are distributed inside the air intake cylinder 13. When the rotating column 15 drives the fan discs 16 to rotate, each set of fan discs 16 can generate a suction effect on the air layer by layer, so that a continuous airflow channel from top to bottom is formed inside the air intake cylinder 13, which effectively avoids airflow turbulence or local vacuum phenomenon, and greatly improves the suction capacity of the air intake cylinder 13 for polluting dust gas. Even in an environment where the airflow of polluting dust gas is weak, the air intake cylinder 13 can ensure a stable air intake volume.

[0037] In this embodiment of the invention, the dust filter rack 17 is a cylindrical structure that runs vertically through the body. The outer side of the dust filter rack 17 is provided with four sets of rectangular through slots that run internally and externally through the body. A filter screen plate 18 is installed on the inner side of the rectangular through slots of the dust filter rack 17. The filter screen plate 18 filters and separates the dust-laden gas drawn into the dust filter rack 17. Dust particles are trapped inside the dust filter rack 17, and dust-free gas passes through the filter screen plate 18 and flows into the inner side of the filter cylinder 12, thus completing the dust filtration work. The inner side of the dust filter rack 17 near the bottom is a conical structure that is inclined inwards. This prevents the dust filtered by the filter screen plate 18 from accumulating inside the dust filter rack 17 during the cleaning and discharge process, ensuring that the dust is completely discharged from the dust filter rack 17 along the conical structure that is inclined inwards.

[0038] In this embodiment of the invention, eight sets of elongated slots are provided on the outer side of the air intake cylinder 13 near the bottom. The elongated slots are arranged in a circular array around the vertical central axis of the air intake cylinder 13. The eight sets of elongated slots of the air intake cylinder 13 are horizontally opposite to the filter screen 18. The circular array of elongated slots of the air intake cylinder 13 achieves 360-degree air intake without dead angles, which greatly improves the air intake coverage of the air intake cylinder 13 in the dust filter frame 17. After the dust-laden air enters the dust filter frame 17 from the elongated slots, it is directly blown horizontally towards the filter screen 18, ensuring that all four sets of filter screens 18 can play a uniform filtering role. This avoids the situation where the filter screen 18 is overloaded locally due to airflow deviation, resulting in uneven filtering effect. A circular through hole is provided at the center of the lower side of the air intake cylinder 13.

[0039] In this embodiment of the invention, the cover 20 is a circular cover structure with an opening on the upper side. The inner wall of the circular cover structure of the cover 20 is provided with a threaded structure. The threaded structure of the cover 20 is engaged with the threaded structure on the outer side of the filter cylinder 12. When it is necessary to clean the dust and other debris accumulated inside the filter cylinder 12 and the dust filter frame 17, the cover 20 can be easily removed because the cover 20 is connected to the filter cylinder 12 by threads, so that the through hole at the bottom of the filter cylinder 12 and the bottom of the dust filter frame 17 are completely open, which facilitates the smooth discharge of debris. A sealing ring 21 is bonded to the inner side of the cover structure of the cover 20, and a sealing post 19 is welded to the center of the inner side of the cover structure of the cover 20 to prevent unfiltered air from mixing into the purified airflow and ensure the stability of the purification effect.

[0040] Specific usage and functions of this invention: In the process of filtering and purifying dusty air, the controller 26 starts the fan motor 14 via a wire. The fan motor 14 drives the fan disc 16, which is welded to the outer side of the rotating column 15, to rotate at high speed. The fan disc 16 agitates the air in the suction cylinder 13, causing the dusty air to pass through the long groove of the suction cylinder 13 from top to bottom and be blown into the dust filter frame 17. The dusty air is blown towards the filter screen 18, which intercepts the dust particles in the air. The air then passes through the filter screen 18 and enters the filter cylinder 12, and is then discharged into the purification shell 2302 through the exhaust pipe 24 and the air supply pipe 22. Inside cylinder 2301, the activated carbon block 2304 placed inside adsorbs and purifies the dust-collected air, removing odors. The dust-collected air then passes through the vent hole at the bottom of cylinder 2301 and is discharged from the bottom of exhaust shell 2303. If it is necessary to remove dust particles accumulated in the dust filter rack 17, manually rotate the handle 28. The handle 28 drives the cover 20 to rotate. Since the inner thread of the cover 20 is engaged with the outer thread of the filter cylinder 12, the cover 20 rotates downward until it disengages from the vent hole at the bottom of the filter cylinder 12. The sealing column 19 disengages from the bottom opening of the dust filter frame 17. Dust particles accumulated inside the dust filter frame 17 are discharged downwards along the conical structure of the dust filter frame 17 by gravity and exit the bottom through-hole of the filter cylinder 12. If cleaning of the filter screen 18 is required, the control unit 26 starts the lifting motor 10 via a wire. The lifting motor 10 drives the drive gear 9 to rotate. Since the drive gear 9 is meshed with the external gear structure of the rotating cylinder 11, the drive gear 9 drives the rotating cylinder 11 to rotate. Since the outer side of the rotating cylinder 11 is threadedly connected to the threaded through-hole at the center of the upper side of the lifting frame 8, the rotating cylinder 11 drives the lifting frame 8 to rotate along the... The long groove of the filter cylinder 12 moves downward until the lifting frame 8 moves the water spray pipe 6 to a horizontal height position relative to the filter screen plate 18. Then, the external water pipe is connected to the water inlet of the water pump 4. The water pump 4 pumps the water from the external water pipe to the water delivery hose 5. The water is then transported through the water delivery hose 5 to the water spray pipe 6. Finally, it is sprayed onto the filter screen plate 18 through the high-pressure nozzle 7 for high-pressure rinsing. The high-pressure water removes the dust adhering to the filter screen plate 18. The dust is discharged from the dust filter 17 and the filter cylinder 12 through the bottom opening of the dust filter frame 17 and the bottom through hole of the filter cylinder 12, thus completing the cleaning of the filter screen plate 18.

[0041] All the above components are installed, connected, or set up using common mechanical methods, such as welding, threaded connections, and screw connections. Furthermore, the specific structure, model, and coefficient indicators of all components are based on their own technologies; any method that achieves the desired beneficial effect can be implemented. The water pump 4, high-pressure nozzle 7, lifting motor 10, fan motor 14, activated carbon block 2304, and control unit 26 mentioned above are all common market components. Upon purchase and use, simply connect them according to the instruction manual provided; therefore, further details are omitted here.

[0042] The technical solutions of the present invention are not limited to the scope of the embodiments of the present invention, and the technical contents not described in detail in the present invention are all known technologies.

Claims

1. An atmospheric environment comprehensive purification control device, comprising a stand; a bottom plate is welded at the bottom end of the stand, a ring frame is welded at the top end of the stand, a filter cylinder is welded at the inner side of the ring frame, a support plate is welded at the outer side of the stand, and a control machine is installed at the front side of the support plate; characterized in that: The air suction cylinder is externally welded with a dust filter frame, the dust filter frame is externally provided with a filter screen, the air suction cylinder is externally rotatably connected with a rotating cylinder, the upper side of the air suction cylinder is provided with a fan motor, the motor shaft of the fan motor is provided with a rotating column, the outer side of the air suction cylinder is externally welded with a filter cylinder.

2. The atmospheric environment comprehensive purification control device according to claim 1, characterized in that: The purification device comprises a placing cylinder, a purification shell, an exhaust shell, activated carbon blocks and a sealing gasket.

3. The comprehensive air environment purification control device according to claim 1, characterized in that: The lifting frame is a cylindrical structure with an open lower side, and a through screw hole is arranged in the center of the upper side of the cylindrical structure of the lifting frame.

4. The comprehensive air environment purification control device according to claim 1, characterized in that: The outer side of the rotating cylinder is externally welded with six groups of fan discs, and the six groups of fan discs are arranged at equal intervals from top to bottom and are distributed in the interior of the air suction cylinder.

5. The device according to claim 1, wherein the device is characterized by: The dust filter frame is a through cylinder structure, and the outer side of the dust filter frame is provided with four groups of rectangular through grooves.

6. The device according to claim 1, wherein the device is characterized by: The dust filter frame is a through cylinder structure, and the outer side of the dust filter frame is provided with four groups of rectangular through grooves.

7. The device according to claim 1, wherein the device is characterized by: ​ 8. The device according to claim 1, wherein the device is characterized by: ​ 9. The device according to claim 1, wherein the device is characterized by: The outer side of the suction cylinder is provided with eight groups of long slot through grooves near the bottom end, which are arranged in a ring array around the vertical center axis of the suction cylinder, and the eight groups of long slot through grooves of the suction cylinder are horizontally opposite to the filter screen plate, and the center position of the lower side of the suction cylinder is provided with a circular through hole.

10. The device according to claim 1, wherein the device is characterized by: The cover is a circular cover body structure with an open upper side, the inner side wall of the circular cover body structure of the cover is provided with a threaded structure, the threaded structure of the cover is engaged and connected at the threaded structure of the outer side of the filter cylinder, a sealing ring is bonded on the inner side of the cover body structure of the cover, and a plugging column is welded at the center position of the inner side of the cover body structure.

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