Automatic cleaning centrifugal blower

Abstract

The invention relates to the technical field of air blowers, and discloses an automatic cleaning centrifugal air blower which comprises a centrifugal air blower body, an air inlet and an air outlet are formed in the centrifugal air blower body, a filtering device is arranged at the air inlet in a communicating mode, and a rotating ring is rotationally installed in the air inlet; the interior of the rotating ring is fixedly connected with a rotating disc through a plurality of connecting frames, and the rotating disc and the rotating ring are both hollow. A dynamic filtering system is constructed by adopting multiple layers of dust filtering belts made of hydrophilic fiber materials, a continuous water film is formed by utilizing a capillarity phenomenon, the contact probability is increased by combining flexible antennas, small-particle dust in airflow is efficiently captured through surface tension, adhesive force and an inertial collision effect, the filtering precision is remarkably improved, and the dust removal efficiency is improved. The rotating disc and the rotating ring drive the dust filtering belt to revolve through impeller power and a speed reducer, the driving roller is driven to rotate through gear ring gear transmission to form a dynamic cleaning path, and continuous dust removal is achieved in cooperation with scraper stripping and centrifugal drainage.

Description

Technical Field

[0001] The invention relates to the technical field of blowers, in particular to an automatic cleaning centrifugal blower. Background Art

[0002] A centrifugal blower is a mechanical device that uses centrifugal force to transport gas. It primarily consists of an impeller, casing, air inlet, and outlet. During operation, the motor drives the impeller to rotate at high speed, creating centrifugal force that accelerates the gas and propels it along the impeller's radius. The gas is collected in the casing and discharged through the outlet, while negative pressure is created at the inlet, continuously drawing in new gas. Centrifugal blowers offer advantages such as high flow, stable pressure, smooth operation, low noise, and easy maintenance. They are widely used in a wide range of fields, including metallurgy, chemical engineering, power generation, sewage treatment, and environmental protection.

[0003] Chinese patent CN220929700U discloses an air suspension centrifugal blower that is easy to clean. The air suspension centrifugal blower that is easy to clean includes a housing, an inner wall of the housing is provided with a filter screen, a cleaning mechanism is provided on one side of the housing, and a centrifugal blower body is provided inside the housing. The cleaning mechanism includes an electric cylinder provided on one side of the housing, a piston rod of the electric cylinder is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a mounting plate, and a scraper is provided on the inner wall of the mounting plate. The cleaning mechanism also includes a limiting hole opened in the inner wall of the scraper, the inner wall of the limiting hole is clamped to the limiting rod, and one end of the limiting rod passes through the top of the mounting plate and is fixedly connected to a connecting block. The air suspension centrifugal blower that is easy to clean provided by this solution solves the problem that some existing air suspension centrifugal blowers do not have the function of automatically cleaning the filter screen, resulting in the need for personnel to remove the filter screen each time it is cleaned, which increases the workload of personnel.

[0004] As shown in the above patent, the existing centrifugal blower generally only filters the incoming air through the filter provided at the air inlet. Due to the limitation of the aperture of the filter, some small particles of dust can still enter the centrifugal blower, and it is difficult to achieve a good filtering effect for small particles of dust; and when cleaning the filter, the impurities attached to the filter are generally scraped off by a scraper to achieve the cleaning of the filter. However, this cleaning method has obvious limitations. During the long-term operation of the filter, some impurities will be embedded deep in the filter mesh. Simply using a scraper for cleaning is not only difficult to effectively remove the blockage in the mesh, but during the process of the scraper applying pressure, the impurities on the surface of the filter are further pressed into the mesh, resulting in aggravated blockage of the filter mesh, reducing the cleaning efficiency and filtering performance of the filter, and affecting the overall operation effect of the centrifugal blower.

[0005] Therefore, it is necessary to provide a kind of automatic cleaning centrifugal blower to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a self-cleaning centrifugal blower, which uses a multi-layer dust filter belt made of hydrophilic fiber material to construct a dynamic filtration system, and efficiently captures small particles of dust in the airflow through surface tension, adhesion and inertial collision effects, thereby significantly improving the filtration accuracy.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: an automatic cleaning centrifugal blower, comprising a centrifugal blower body, an air inlet and an air outlet provided on the centrifugal blower body, a filter device connected to the air inlet, a rotating ring rotatably installed inside the air inlet, a rotating disk fixedly connected to the interior of the rotating ring through a plurality of connecting frames, the rotating disk and the rotating ring are both hollow, the axis position of the rotating disk is fixedly connected to a first connecting shaft for driving the rotating disk to rotate, a plurality of dust filter components are provided between the rotating disk and the rotating ring, and the dust filter components The invention comprises an active roller rotatably mounted inside a rotating ring, a driven roller rotatably mounted inside a rotating disk, and a plurality of dust filter belts, the dust filter belts are collectively mounted on the active roller and the driven roller, a gear ring is fixedly mounted inside the air inlet, the end of the active roller extends out of the rotating ring and is fixedly mounted with a gear meshing with the gear ring, a water inlet is connected to the side of the rotating disk away from the first connecting shaft, a water injection pipe is fixedly mounted inside the air inlet, the water injection pipe passes through the outer wall of the air inlet, a drainage assembly is arranged in the air inlet, a plurality of scrapers are fixedly mounted on the inner wall of the rotating ring, and the scrapers are pressed on the dust filter belt.

[0008] The present invention is further configured as follows: the drainage assembly includes a drainage ring, which is fixedly installed inside the air inlet, and the drainage ring is sleeved on the rotating ring, and the drainage ring and the rotating ring rotate in cooperation, and the outer wall of the rotating ring is provided with a plurality of drainage holes, the drainage holes are connected to the inner cavity of the drainage ring, and the bottom of the drainage ring is connected and provided with a drainage outlet.

[0009] The present invention is further configured as follows: the filtering device includes two elastic support rings, a cylindrical elastic filter screen fixedly installed between the two elastic support rings, a first adjustment component for adjusting the distance between the two elastic support rings, and a second adjustment component for adjusting the diameter of the elastic support rings; the filtering device is provided with a dust collection box for collecting cleaned impurities; the cylindrical elastic filter screen includes multiple strands of radial elastic wires and multiple strands of circumferential elastic wires, the circumferential elastic wires surround the radial elastic wires, and the radial elastic wires and the circumferential elastic wires are vertically cross-woven.

[0010] The present invention is further configured as follows: the first adjustment assembly includes a first support plate, a second support plate and an electric push rod, the first support plate and the second support plate are respectively arranged on both sides of the cylindrical elastic filter screen, one elastic support ring is arranged on the first support plate, and the other elastic support ring is arranged on the second support plate, the electric push rod is fixedly mounted on the first support plate, and the output end of the electric push rod is transmission-connected to the second support plate; The cam is secured to the chassis and has a first end in contact with the second support frame, and the second end is secured to the chassis with a first end in contact with the first support frame.

[0011] The present invention is further configured as follows: a plurality of rope grooves are provided on the first support disk, and the plurality of rope grooves are distributed in a circular array with the axis of the first support disk as the array center, one end of the rope groove is connected to the end of the first slide groove away from the axis of the first support disk, and the other end of the rope groove is located in the middle of the first support disk on one side close to the second support disk, the output of the electric push rod is fixedly installed with a drive disk, and the end of the first traction rope away from the first slider passes through the rope groove and is fixedly connected to the drive disk.

[0012] The present invention is further configured as follows: a connecting port is fixedly provided on one side of the second support plate close to the air inlet, a connecting hole connected to the connecting port is opened at the axis center of the second support plate, the connecting port is connected to the air inlet, an installation box is provided on the connecting port, the dust collection box is slidably installed in the installation box, and a ventilation hole connected to the connecting port is provided through the installation box.

[0013] The present invention is further configured as follows: a connecting plate is fixedly installed in the communicating hole, and the output end of the electric push rod is fixedly connected to the connecting plate.

[0014] The present invention is further configured as follows: the telescopic support rod includes a first connecting rod, a second connecting rod and a tension spring, two first connecting rods are provided, and the two first connecting rods are fixedly connected to the first slider and the second slider respectively, the first connecting rod is hollow, and the two ends of the second connecting rod respectively extend into the interior of the two first connecting rods, and the first connecting rod and the second connecting rod are slidably matched, and both ends of the second connecting rod are elastically connected to the two first connecting rods through a tension spring.

[0015] The present invention is further configured as follows: both sides of the dust box are opened, an inclined baffle is fixedly provided at the opening on one side of the dust box away from the centrifugal blower body, and an intercepting filter is fixedly provided at the opening on the side of the dust box close to the centrifugal blower body.

[0016] The present invention is further configured as follows: a second traction rope is fixedly connected to the top of the dust collecting box, the top of the second traction rope passes through the top wall of the mounting box and is fixedly connected to the first support plate, a support rod is fixedly installed on the side of the second support plate away from the first support plate, a guide ring is fixedly installed on the support rod, and the second traction rope passes through the guide ring.

[0017] In summary, the present invention has the following beneficial effects: 1. This invention uses a multi-layer dust filter belt made of hydrophilic fiber material to construct a dynamic filtration system. It uses capillary action to form a continuous water film and combines flexible tentacles to increase contact probability. Through surface tension, adhesion, and inertial collision effects, it efficiently captures small dust particles in the airflow, significantly improving filtration accuracy. The rotating disk and rotating ring are driven by the impeller power through the reducer to drive the dust filter belt to rotate. The ring gear drives the active roller to rotate to form a dynamic cleaning path. The scraper peeling and centrifugal drainage are combined to achieve continuous dust removal. 2. The present invention effectively solves the problem of cleaning the existing centrifugal blower filter by setting a filtering device. Its cylindrical elastic filter is cross-woven with high elastic modulus fibers, and is matched with a first adjusting component and a second adjusting component, which can flexibly adjust the mesh area. When the filter is blocked, the first adjusting component and the second adjusting component work together to stretch the radial elastic wire and the circumferential elastic wire to expand the mesh, allowing impurities blocked inside the mesh to enter the cylindrical elastic filter and be collected by the dust box, effectively avoiding the disadvantage of scraper cleaning that presses impurities into the mesh, greatly improving the filter cleaning efficiency, ensuring stable filtering performance, reducing the impact of filter blockage on the overall operation of the centrifugal blower, reducing maintenance costs, and extending the service life of the equipment. The centrifugal blower body does not need to be shut down during cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a partial cross-sectional structural schematic diagram of the centrifugal blower body of the present invention; Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A; Figure 4 Schematic diagram of the three-dimensional structure of the rotating ring, rotating disk and dust filter assembly of the present invention; Figure 5 Schematic diagram of the side cross-sectional structure of the rotating ring, rotating disk and dust filter assembly of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at point B; Figure 7 It is a structural schematic diagram of the filtering device of the present invention; Figure 8 for Figure 7 Schematic diagram of the enlarged structure at C; Figure 9 This is a schematic diagram of the structure of the filtering device of the present invention after removing the cylindrical elastic filter screen; Figure 10 It is a structural schematic diagram of the first support plate and the electric push rod of the present invention; Figure 11 for Figure 5 A schematic diagram of the enlarged structure at point B; Figure 12 is a schematic structural diagram of the second support plate of the present invention; Figure 13 is a schematic cross-sectional view of the telescopic support rod of the present invention; Figure 14 This is a schematic structural diagram of the second traction rope, the mounting box, and the dust collection box of the present invention; Figure 15 It is a structural schematic diagram of the dust collecting box of the present invention.

[0019] In the figure: 1. Centrifugal blower body; 101. Air inlet; 102. Air outlet; 103. Drain outlet; 2. Filter device; 3. First support plate; 301. First chute; 302. Rope groove; 4. Second support plate; 401. Second chute; 402. Connecting hole; 5. First slider; 6. Second slider; 7. Telescopic support rod; 701. First connecting rod; 702. Second connecting rod; 703. Tension spring; 8. Cylindrical elastic filter; 801. Radial elastic wire; 802. Circumferential elastic wire; 9. Elastic support ring; 10. Electric push rod; 11. Connecting plate; 12. Drive Disc; 13. First traction rope; 14. Connecting port; 15. Mounting box; 1501. Ventilation hole; 16. Dust collecting box; 17. Intercepting filter; 18. Oblique baffle; 19. Closing plate; 20. Second traction rope; 21. Guide ring; 22. Support rod; 23. Rotating ring; 2301. Drain hole; 24. Rotating disc; 25. Connecting frame; 26. Active roller; 27. Driven roller; 28. Dust filter belt; 29. ​​Gear; 30. Gear ring; 31. Water inlet; 32. Water injection pipe; 33. First connecting shaft; 34. Reducer; 35. Second connecting shaft; 36. Drain ring; 37. Scraper. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] See also Figures 1 to 6In an embodiment of the present invention, an automatic cleaning centrifugal blower includes a centrifugal blower body 1, an air inlet 101 and an air outlet 102 are provided on the centrifugal blower body 1, a filter device 2 is connected to the air inlet 101, a rotating ring 23 is rotatably installed inside the air inlet 101, and a rotating disk 24 is fixedly connected to the interior of the rotating ring 23 through a plurality of connecting frames 25, the rotating disk 24 and the rotating ring 23 are both hollow, and the axis position of the rotating disk 24 is fixedly connected to a first connecting shaft 33 for driving the rotating disk 24 to rotate, and the end of the first connecting shaft 33 is passed through A second connecting shaft 35 is connected through a reducer 34, and the reducer 34 is fixedly connected to the inner wall of the air inlet 101. The end of the second connecting shaft 35 is fixedly connected to the impeller in the centrifugal blower body 1, so that when the impeller rotates, it can drive the second connecting shaft 35 to rotate. When the second connecting shaft 35 rotates, the first connecting shaft 33 is driven to rotate at a lower speed through the reducer 34, thereby driving the rotating disk 24 to rotate. A plurality of dust filter components are arranged between the rotating disk 24 and the rotating ring 23, and the dust filter components include an active roller 26 rotatably mounted inside the rotating ring 23, a rotating roller 26 rotatably mounted inside the rotating disk 24, and a rotating roller 26 rotatably mounted inside the rotating disk 24. The driven roller 27 and multiple dust filter belts 28 are mounted on the active roller 26 and the driven roller 27. There is a gap between the dust filter belts 28. The dust filter belts 28 are made of hydrophilic fiber materials, such as modified polyester fiber, polyacrylonitrile fiber, etc. There are a large number of micropores or fiber gaps inside the dust filter belt 28, which quickly absorb water through capillary phenomena to form a continuous water film attached to the surface of the dust filter belt 28. The surface of the dust filter belt 28 is provided with flexible tentacles protruding outward to increase the probability of contact with dust. A gear ring 30 is fixedly installed inside the air inlet 101. The end of the active roller 26 A rotating ring 23 is extended and fixedly mounted with a gear 29 meshing with a ring gear 30. A water inlet 31 is provided on the side of the rotating disk 24 away from the first connecting shaft 33. A water injection pipe 32 is fixedly installed inside the air inlet 101. The water injection pipe 32 passes through the outer wall of the air inlet 101. The water injection pipe 32 is connected to the water inlet 31, and the water injection pipe 32 and the water inlet 31 are rotatably matched and a rotational sealing treatment is performed at the rotating connection. A drainage assembly is provided in the air inlet 101. A plurality of scrapers 37 are fixedly mounted on the inner wall of the rotating ring 23. The scrapers 37 are pressed on the dust filter belt 28. The drainage assembly includes a drainage ring 36, which is fixedly installed inside the air inlet 101. The drainage ring 36 is sleeved on the rotating ring 23, and the drainage ring 36 rotates with the rotating ring 23. The outer wall of the rotating ring 23 is provided with a plurality of drainage holes 2301, and the drainage holes 2301 are connected to the inner cavity of the drainage ring 36. The bottom of the drainage ring 36 is connected to the drainage port 103.

[0022] When the impeller in the centrifugal blower body 1 rotates, the impeller drives the second connecting shaft 35 to rotate. When the second connecting shaft 35 rotates, it drives the first connecting shaft 33 to rotate at a lower speed through the reducer 34, thereby driving the rotating disk 24 to rotate. When the rotating disk 24 rotates, it drives the rotating ring 23 to rotate through the connecting frame 25, thereby driving multiple dust filter components to rotate, so that the dust filter belt 28 rotates along with the rotating disk 24 and the rotating ring 23, thereby increasing the contact probability of the dust filter belt 28 with small particles of dust in the air. At the same time, water is intermittently injected into the rotating disk 24 through the water injection pipe 32 and the water inlet 31, and the water adheres to the dust filter belt 28. The dust filter belt 28 is made of hydrophilic fiber material. This ensures that the dust filter belt 28 always remains moist, and captures dust in the airflow through surface tension, adhesion, and inertial collision. At the same time, when the rotating ring 23 rotates, since the gear ring 30 remains fixed, the gear 29 moves in a circular trajectory, and the gear 29 itself rotates, thereby driving the active roller 26 to rotate, thereby driving the dust filter belt 28 to rotate, so that the dust attached to the dust filter belt 28 is transferred to the inside of the rotating ring 23, and the scraper 37 is used to scrape off the water attached to the dust filter belt 28, so that the dust falls off along with the water flow, and is thrown into the drainage ring 36 through the drainage hole 2301 under the action of the centrifugal force when the rotating ring 23 rotates, and is finally discharged through the drainage port 103.

[0023] See also Figure 1 and Figures 7 to 13In an embodiment of the present invention, the filter device 2 includes two elastic support rings 9, a cylindrical elastic filter screen 8 fixedly installed between the two elastic support rings 9, a first adjusting component for adjusting the distance between the two elastic support rings 9, and a second adjusting component for adjusting the diameter of the elastic support ring 9. The filter device 2 is provided with a dust collecting box 16 for collecting cleaned impurities; the cylindrical elastic filter screen 8 includes multiple strands of radial elastic wires 801 and multiple strands of circumferential elastic wires 802. The radial elastic wires 801 and the circumferential elastic wires 802 are both made of elastic fibers with a high elastic modulus, such as polyurethane, silicone rubber fiber or rubber-based composite materials. The circumferential elastic wires 802 surround the radial elastic wires 801, and the radial elastic wires 801 and the circumferential elastic wires 802 are vertically cross-woven to form a three-dimensional elastic grid. The elastic modulus can be adjusted by the first adjusting component. The spacing between the elastic support rings 9 is adjusted, and then the radial elastic wire 801 is stretched to change the longitudinal density of the grid. The diameter of the elastic support ring 9 can be adjusted by the second adjusting component, and then the circumferential elastic wire 802 is stretched to adjust the area of ​​the mesh. When the centrifugal blower body 1 is working, the gas entering through the air inlet 101 is first filtered by the filter device 2. When the cylindrical elastic filter screen 8 is seriously clogged, the distance between the two elastic support rings 9 is adjusted by the first adjusting component, so that the two elastic support rings 9 are separated from each other, and the diameter of the elastic support ring 9 is adjusted by the second adjusting component, so that the diameter of the elastic support ring 9 is increased, and then the circumferential elastic wire 802 is stretched, so that the area of ​​the mesh on the cylindrical elastic filter screen 8 is increased, so that impurities clogged in the mesh can enter the interior of the cylindrical elastic filter screen 8 and be collected by the dust box 16. The present invention effectively solves the problem of cleaning the existing centrifugal blower filter through the setting of the filtering device 2. Its cylindrical elastic filter 8 is cross-woven with high elastic modulus fibers, and is matched with the first adjusting component and the second adjusting component, which can flexibly adjust the mesh area. When the filter is blocked, the first adjusting component and the second adjusting component work together to stretch the radial elastic wire 801 and the circumferential elastic wire 802, expand the mesh, and allow impurities blocked inside the mesh to enter the cylindrical elastic filter 8 and be collected by the dust box 16, effectively avoiding the disadvantage of scraper cleaning that presses impurities into the mesh, greatly improving the filter cleaning efficiency, ensuring stable filtering performance, reducing the impact of filter blockage on the overall operation of the centrifugal blower, reducing maintenance costs, and extending the service life of the equipment. The centrifugal blower body 1 does not need to be shut down during cleaning.

[0024] In this embodiment, preferably, the first adjustment component includes a first support plate 3, a second support plate 4 and an electric push rod 10. The first support plate 3 provides a support base on one side for the entire first adjustment component. Its shape is usually disc-shaped, and the material can be selected from metal or alloy materials with certain strength and stability to ensure that it can withstand the corresponding force without deformation during the adjustment process. The second support plate 4 cooperates with the first support plate 3 and acts together on the cylindrical elastic filter screen 8. Its material and shape are similar to those of the first support plate 3. The two together constitute the support frame of the first adjustment component. The first support plate 3 and the second support plate 4 are respectively arranged on both sides of the cylindrical elastic filter screen 8, one elastic support ring 9 is arranged on the first support plate 3, and the other elastic support ring 9 is arranged on the second support plate 4. The electric push rod 10 is fixedly mounted on the first support plate 3, and the output end of the electric push rod 10 is transmission-connected to the second support plate 4. The extension and retraction of the output end of the electric push rod 10 can drive the first support plate 3 to move, thereby driving the first support plate 3 The elastic support ring 9 moves, thereby adjusting the distance between the two elastic support rings 9; the second adjusting component includes a first slider 5, a second slider 6, a telescopic support rod 7 and a first traction rope 13, and the first support plate 3 is provided with a plurality of first slide grooves 301 on one side close to the second support plate 4, and the plurality of first slide grooves 301 are distributed in a ring array with the axis line of the first support plate 3 as the array center, and the first slider 5 is slidably installed in the plurality of first slide grooves 301, and the second support plate 4 is provided with a plurality of second slide grooves 401 on one side close to the first support plate 3, and the plurality of second slide grooves 401 are distributed in a ring array with the axis line of the second support plate 4 as the array center. The second slider 6 is slidably installed in the plurality of second slide grooves 401, and the relatively arranged first slider 5 and the second slider 6 are connected by an elastic support rod 22, and the plurality of first sliders 5 are fixedly connected to one of the elastic support rings 9, and the plurality of second sliders 6 are fixedly connected to the other elastic support ring 9, and the plurality of first slide grooves 301 are provided with a first traction rope 13 for driving the first slider 5 to move;The first support disk 3 is provided with a plurality of rope grooves 302, which are distributed in a circular array with the axis of the first support disk 3 as the array center. One end of the rope groove 302 is connected to the end of the first slide 301 away from the axis of the first support disk 3, and the other end of the rope groove 302 is located in the middle of the first support disk 3, close to the side of the second support disk 4. The output of the electric push rod 10 is fixedly installed with a drive disk 12, and the end of the first traction rope 13 away from the first slider 5 passes through the rope groove 302 and is fixedly connected to the drive disk 12. When the output end of the electric push rod 10 is extended, The distance between the drive disc 12 and the first support disc 3 gradually increases, causing the end of the first traction rope 13 closest to the drive disc 12 to gradually extend from the rope groove 302. This causes the first traction rope 13 to pull the first slider 5 in a direction away from the axis of the first support disc 3, thereby pulling the elastic support ring 9 to expand, increasing the diameter of the elastic support ring 9, thereby achieving adjustment of the diameter of the elastic support ring 9. By cooperating with the first traction rope 13, the diameter of the two elastic support rings 9 can be automatically driven to increase when the two elastic support rings 9 are relatively far apart, and the transmission synchronization is good.

[0025] In this embodiment, preferably, a connecting port 14 is fixedly provided on one side of the second support plate 4 close to the air inlet 101, and a connecting hole 402 connected to the connecting port 14 is opened at the axis center of the second support plate 4, the connecting port 14 is connected to the air inlet 101, and a mounting box 15 is provided on the connecting port 14, the dust collecting box 16 is slidably installed in the mounting box 15, and a ventilation hole 1501 connected to the connecting port 14 is penetrated on the mounting box 15; the external air enters the connecting port 14 through the connecting hole 402 after being filtered by the cylindrical elastic filter screen 8, and then enters the centrifugal blower body 1 through the air inlet 101; a connecting plate 11 is fixedly installed in the connecting hole 402, and the output end of the electric push rod 10 is fixedly connected to the connecting plate 11, so as to realize the extension and retraction of the output end of the electric push rod 10 to adjust the distance between the first support plate 3 and the support plate.

[0026] In this embodiment, preferably, the telescopic support rod 7 includes a first connecting rod 701, a second connecting rod 702 and a tension spring 703. Two first connecting rods 701 are provided, and the two first connecting rods 701 are fixedly connected to the first slider 5 and the second slider 6 respectively. The first connecting rod 701 is hollow, and the two ends of the second connecting rod 702 extend into the interior of the two first connecting rods 701 respectively, and the first connecting rod 701 and the second connecting rod 702 slide together, and the two ends of the second connecting rod 702 are elastically connected to the two first connecting rods 701 through the tension spring 703; through the setting of the telescopic support rod 7, the relatively arranged first slider 5 and the second slider 6 can move synchronously, thereby driving the two elastic support rings 9 to expand synchronously, and through the sliding cooperation of the first connecting rod 701 and the second connecting rod 702, the telescopic support rod 7 will not affect the relative movement of the first support plate 3 and the second support plate 4.

[0027] See also Figure 7 、 Figure 14 and Figure 15In the embodiment of the present invention, both sides of the dust box 16 are opened. An inclined baffle 18 is fixedly provided at the opening of the dust box 16 away from the centrifugal blower body 1. An interception filter 17 is fixedly provided at the opening of the dust box 16 close to the centrifugal blower body 1. The aperture of the interception filter 17 is smaller than the aperture of the cylindrical elastic filter 8 in the natural state. The setting of the inclined baffle 18 can block the impurities entering the dust box 16 and prevent the impurities from flowing back into the interior of the cylindrical elastic filter 8; the bottom end of the dust box 16 is detachably installed with a sealing plate 19, which is detachable. The detachable connection can be achieved by bolt connection, snap connection and other methods, and the impurities in the dust box 16 can be cleaned by removing the sealing plate 19; the top of the dust box 16 is fixedly connected to the second traction rope 20, the top of the second traction rope 20 passes through the top wall of the installation box 15 and is fixedly connected to the first support plate 3, and the second support plate 4 is fixedly installed with a support rod 22 on the side away from the first support plate 3, and a guide ring 21 is fixedly installed on the support rod 22, and the second traction rope 20 passes through the guide ring 21, and the movement of the second traction rope 20 can be guided by the guide ring 21; when the first support plate 4 is in the air, the second traction rope 20 is pulled out of the air. When the support plate 3 moves in the direction away from the second support plate 4, the cylindrical elastic filter 8 expands under the adjustment of the first adjustment component and the second adjustment component, so that the mesh area of ​​the cylindrical elastic filter 8 increases. At this time, the negative pressure generated by the centrifugal blower body 1 when working will draw the impurities blocked on the cylindrical elastic filter 8 into the installation box 15. In addition, since the first support plate 3 moves in the direction away from the second support plate 4, the second traction rope 20 pulls the dust box 16 to move upward, thereby causing the airflow entering the air inlet 101 to enter the dust box 16 first, and pass through the interception inside the dust box 16. The filter screen 17 intercepts the cleaned impurities, thereby collecting the cleaned dust. After cleaning is completed, as the first support plate 3 is reset, the dust box 16 moves downward and resets under its own gravity. A spring can be provided at the top of the dust box 16 to assist in resetting the dust box 16; the up and down movement of the dust box 16 is driven by the power of the movement of the first support plate 3, and there is no need to set other driving elements, which reduces the cost of the equipment and improves synchronization, so that when the cylindrical elastic filter screen 8 is cleaned, the dust box 16 can automatically move to the air flow to collect the cleaned impurities.

[0028] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. An automatic cleaning centrifugal blower, comprising a centrifugal blower body, wherein the centrifugal blower body is provided with an air inlet and an air outlet, wherein the air inlet is connected to a filter device, wherein: The transmission mechanism that this filter assembly is used for isolating is arranged on the circumference of the dust collecting box, and this filter is fixed on the circumference of the dust collecting box, and this filter is installed on the circumference of the dust collecting box.

2. The automatic cleaning centrifugal blower according to claim 1, characterized in that: The drainage assembly includes a drainage ring, which is fixedly installed inside the air inlet. The drainage ring is sleeved on the rotating ring, and the drainage ring and the rotating ring rotate in cooperation. The outer wall of the rotating ring is provided with a plurality of drainage holes, and the drainage holes are connected with the inner cavity of the drainage ring. The bottom of the drainage ring is connected and provided with a drainage outlet.

3. The automatic cleaning centrifugal blower according to claim 1, characterized in that: The filtering device includes two elastic support rings, a cylindrical elastic filter screen fixedly installed between the two elastic support rings, a first adjustment component for adjusting the distance between the two elastic support rings, and a second adjustment component for adjusting the diameter of the elastic support rings. The filtering device is provided with a dust collection box for collecting cleaned impurities; the cylindrical elastic filter screen includes multiple strands of radial elastic wires and multiple strands of circumferential elastic wires, the circumferential elastic wires surround the radial elastic wires, and the radial elastic wires and the circumferential elastic wires are vertically cross-woven.

4. The automatic cleaning centrifugal blower according to claim 3, characterized in that: The first adjustment assembly includes a first support plate, a second support plate and an electric push rod, wherein the first support plate and the second support plate are respectively arranged on both sides of the cylindrical elastic filter screen, wherein one elastic support ring is arranged on the first support plate, and the other elastic support ring is arranged on the second support plate, and the electric push rod is fixedly mounted on the first support plate, and the output end of the electric push rod is transmission-connected to the second support plate; The cam is secured to the chassis and has a first end in contact with the second support frame, and the second end is secured to the chassis with a first end in contact with the first support frame.

5. The automatic cleaning centrifugal blower according to claim 4, characterized in that: The first support disk is provided with a plurality of rope grooves, which are distributed in a circular array with the axis of the first support disk as the array center. One end of the rope groove is connected to the end of the first slide groove away from the axis of the first support disk, and the other end of the rope groove is located in the middle of the first support disk, close to the second support disk. The output of the electric push rod is fixedly installed with a drive disk, and the end of the first traction rope away from the first slider passes through the rope groove and is fixedly connected to the drive disk.

6. The automatic cleaning centrifugal blower according to claim 3, characterized in that: A connecting port is fixedly provided on one side of the second support plate close to the air inlet, a connecting hole connected to the connecting port is opened at the axis center of the second support plate, the connecting port is connected to the air inlet, an installation box is provided on the connecting port, the dust collection box is slidably installed in the installation box, and a ventilation hole connected to the connecting port is provided through the installation box.

7. The self-cleaning centrifugal blower according to claim 6, characterized in that: A connecting plate is fixedly installed in the communicating hole, and the output end of the electric push rod is fixedly connected to the connecting plate.

8. The self-cleaning centrifugal blower according to claim 4, characterized in that: The telescopic support rod includes a first connecting rod, a second connecting rod and a tension spring. Two first connecting rods are provided, and the two first connecting rods are fixedly connected to the first slider and the second slider respectively. The first connecting rod is hollow, and the two ends of the second connecting rod respectively extend into the interior of the two first connecting rods, and the first connecting rod and the second connecting rod are slidably matched. Both ends of the second connecting rod are elastically connected to the two first connecting rods through the tension spring.

9. The self-cleaning centrifugal blower according to claim 3, characterized in that: Both sides of the dust collecting box are opened. An inclined baffle is fixedly provided at the opening on one side of the dust collecting box away from the centrifugal blower body, and an intercepting filter is fixedly provided at the opening on the side of the dust collecting box close to the centrifugal blower body.

10. The self-cleaning centrifugal blower according to claim 9, characterized in that: A second traction rope is fixedly connected to the top of the dust collection box, and the top of the second traction rope passes through the top wall of the installation box and is fixedly connected to the first support plate. A support rod is fixedly installed on the side of the second support plate away from the first support plate, and a guide ring is fixedly installed on the support rod, and the second traction rope passes through the guide ring.

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