A new air filter element

Abstract

This invention relates to the field of air filter technology and proposes a novel air filter, comprising two sealing caps and filter media, as well as an upper housing, an opening and closing component, an outer protective mesh, a rotating mechanism, a self-cleaning mechanism, and a dust collection box. One of the sealing caps is fixedly equipped with an installation ring, the upper housing is equipped with an installation component, the opening and closing component is located on the upper housing, and the outer protective mesh is detachably mounted on the upper housing. The sealing caps and filter media are both located inside the outer protective mesh. The rotating mechanism is located on the upper housing. The self-cleaning mechanism is used to open the filter media and scrape its surface. The self-cleaning mechanism includes an opening component and a scraping component. The dust collection box is detachably located on the side of the outer protective mesh away from the upper housing. This technical solution addresses the problem in existing technologies where pulse backflushing mechanisms are used for self-cleaning of filter elements, which easily leads to secondary dispersion of captured particles and dust embedding in the filter media, increasing cleaning difficulty.

Description

Technical Field

[0001] This invention relates to the field of air filter technology, and more specifically, to a novel air filter. Background Technology

[0002] Air filters are the core purification components in the intake systems of various power equipment. Their function is to effectively intercept dust, particulate matter, and various suspended impurities in the intake air, protecting core components such as cylinders, pistons, and impellers from particulate wear and extending the service life of the equipment.

[0003] The filter element uses a pleated filter bed to increase the filtration area. In recent years, self-cleaning air filters have achieved automatic cleaning of the filter element through pulse backflushing technology. Although the existing pulse backflushing system of self-cleaning filter elements can clean the surface of the filter material without disassembling the machine, the direction of the backflushing airflow is often opposite to the air intake direction of the filter element itself, which can easily cause secondary dispersion of already captured particles. Under the action of backflushing, dust can easily embed into the root of the pleats on the surface of the filter element, causing deep blockage and increasing the difficulty of cleaning. Summary of the Invention

[0004] This invention proposes a novel air filter element to solve the problem that the existing technology uses a pulse backflushing mechanism to achieve self-cleaning of the filter element, which easily causes secondary release of captured particles and makes dust embedded in the filter material, increasing the difficulty of cleaning.

[0005] The technical solution of the present invention is as follows: A novel air filter element includes two sealing caps and filter media folded between the two sealing caps, and further includes: An upper housing, wherein a mounting ring is fixedly disposed on one of the sealing covers, and the upper housing is provided with a mounting member for limiting the position of the mounting ring, the mounting member comprising: The upper housing has multiple locking grooves, and the locking block is disposed inside the locking grooves by a telescopic rod and a locking spring. The mounting ring has an annular groove that matches the locking block, and the mounting ring also has a mounting groove that matches the mounting ring. When the mounting ring is installed inside the mounting groove, the locking block is located inside the annular groove. An opening / closing element is provided on the upper housing, which has an air outlet. The opening / closing element is disposed on the upper housing and is used to open and close the air outlet. The opening / closing element includes: The opening and closing plate has a guide groove on the upper housing, and the opening and closing plate is slidably disposed inside the guide groove. There is sliding damping between the opening and closing plate and the guide groove. An outer protective mesh is detachably mounted on the upper housing, and the sealing cover and the filter material are both located inside the outer protective mesh. A rotating mechanism, disposed on the upper housing, is used to drive the mounting ring and the sealing cover to rotate. The rotating mechanism includes: A drive roller, which is rotatably mounted on the upper housing; An anti-slip pad is fixedly fitted onto the outside of the drive roller, and the anti-slip pad abuts against the inner sidewall of the mounting ring; The self-cleaning mechanism is used to expand the filter media and scrape the surface of the filter media. The self-cleaning mechanism includes an expanding component and a scraping component. The opening component is movably disposed on the sealing cover for opening up the pleats of the filter material. The opening component includes: A movable frame, which is movably mounted on the sealing cover; A support rod, which is bent, is fixedly mounted on the movable frame and can be inserted into the gaps between the pleats of the filter material and lift the pleats. The scraping assembly is disposed on the spreading assembly and is used for directional cleaning of the filter material surface. The scraping assembly includes: An elastic scraper blade is movably mounted on the movable frame. The elastic scraper blade moves along the axial direction of the filter material and is bent. A cleaning brush is fixedly disposed outside the elastic scraper, and the cleaning brush is in contact with the spread surface of the filter material; A dust collection box is detachably mounted on the side of the outer protective mesh away from the upper housing. The dust collection box is filled with a sponge, and a dust collection funnel is fixedly mounted on the dust collection box, with the dust collection funnel located below the scraping assembly.

[0006] To enable the movement of the elastic scraping blade, a drive screw is rotatably mounted on the moving frame, and a drive block is slidably mounted on the moving frame. The drive block and the drive screw are threadedly connected, and the elastic scraping blade is mounted on the drive block and moves with the drive block.

[0007] To facilitate the replacement of the scraping assembly and reduce dust accumulation, the elastic scraping blade is fixedly connected to a disassembly frame, which is detachably mounted on the drive block by bolts.

[0008] To better collect dust, a scraper is provided on the outside of the sealing cover at the bottom, and the scraper contacts the top of the dust collection box.

[0009] The working principle and beneficial effects of this invention are as follows: 1. In this invention, the filter material is rotated by a rotating mechanism, and the corresponding pleats are rotated to the self-cleaning mechanism. The pleats are opened by moving the opening component to the root of the filter material pleats. The dust inside the opened pleats can be scraped off from top to bottom by the scraping component. The dust is cleaned mechanically, avoiding the secondary dispersion of captured particles caused by the reverse airflow of traditional pulse back-blowing technology. The scraped dust falls into the dust collection box through the dust collection funnel and is absorbed by the sponge, further reducing the dispersion of dust.

[0010] 2. In this invention, the scraping component rises when the spreading component moves away from the filter material, and descends when the spreading component moves closer to the filter material and opens up the pleats. This achieves directional cleaning of dust on the surface of the filter material, making it easier for dust to be collected into the dust collection box. The elastic scraping blade and cleaning brush can be replaced by bolts, preventing dust from accumulating between the cleaning brushes during long-term scraping operations and ensuring the scraping effect of the cleaning brush.

[0011] 3. In this invention, the mounting ring and the upper housing are connected by the mounting component, and the air outlet is opened and closed by the opening and closing plate. During normal air filtration, the opening and closing plate remains open to allow airflow to pass normally. When the air filter element is disassembled and repaired, the closing plate closes the air outlet to prevent external pollutants from entering the filter element from the air outlet side and causing pollution to the filter element. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of the present invention; Figure 3 This is a schematic diagram of the structure of the mounting ring, upper housing, and opening / closing element of the present invention; Figure 4 This is a schematic diagram of the self-cleaning mechanism and the unfolded filter material of the present invention; Figure 5 This is a schematic diagram of the self-cleaning mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the dust collection box, sponge, dust collection funnel, box cover and placement tray of the present invention; Figure 7 For the present invention Figure 2 A magnified schematic diagram of the local structure at point A; Figure 8 For the present invention Figure 2 A magnified schematic diagram of the local structure at point B; Figure 9 For the present invention Figure 3 A magnified schematic diagram of the structure at point C.

[0014] In the picture: 1. Sealing cap; 2. Filter media; 3. Mounting ring; 4. Upper shell; 5. Outer protective mesh; 6. Dust collection box; 7. Sponge; 8. Dust collection funnel; 9. Box cover; 10. Placement tray; 11. Connector; 12. Connecting seat; 13. Scraper; 101. Locking block; 102. Clamping spring; 201. Opening and closing plate; 301. Drive roller; 302. Motor 1; 303. Anti-slip mat; 401. Moving frame; 402. Electric cylinder; 403. Spreading rod; 501. Flexible scraper blade; 502. Sweeping brush; 503. Drive screw; 504. Motor II; 505. Drive block; 506. Assembly / disassembly frame. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0016] like Figures 1 to 2 As shown, this embodiment proposes a novel air filter element, including two sealing caps 1 and a filter material 2 folded between the two sealing caps 1. The folded filter material 2 is installed between the two sealing caps 1. The filter material 2 can be made of resin-treated microporous filter paper or soft, porous, sponge-like polyurethane. It also includes an upper shell 4, opening and closing parts, an outer protective net 5, a rotating mechanism, a self-cleaning mechanism, and a dust collection box 6.

[0017] One of the sealing caps 1 is fixedly equipped with a mounting ring 3, and the upper housing 4 is equipped with a mounting component for limiting the position of the mounting ring 3, such as... Figure 3 and Figure 9As shown, the mounting component includes a locking block 101, which is spherical. The upper housing 4 has multiple locking grooves. The locking block 101 is set inside the locking grooves by a telescopic rod and a locking spring 102. The mounting ring 3 has an annular groove that matches the locking block 101 and an mounting groove that matches the mounting ring 3. When the mounting ring 3 is installed inside the mounting groove, the locking block 101 is located inside the annular groove. When the mounting ring 3 is inserted into the mounting groove, the edge of the mounting ring 3 can push the locking block 101 into the locking groove. When the mounting ring 3 is installed in place, that is, when the mounting ring 3 is pressed against the inner wall of the mounting groove, the locking block 101 is pushed into the annular groove under the action of the locking spring 102 to limit the mounting ring 3. The filter material 2 and the sealing cover 1 are installed on the upper housing 4. The filter fan is installed above the upper housing 4. The airflow enters the inner side through the outer side of the filter material 2 and is discharged above the center of the filter material 2. The upper housing 4 protects the top of the filter material 2, that is, the air outlet side.

[0018] An air outlet is provided on the upper housing 4, and an opening and closing element is provided on the upper housing 4 for opening and closing the air outlet, such as... Figures 1 to 3 As shown, the opening and closing component includes an opening and closing plate 201. A guide groove is provided on the upper housing 4. The opening and closing plate 201 is slidably disposed inside the guide groove. There is sliding damping between the opening and closing plate 201 and the guide groove. A damping pad is fixedly connected to the outer side of the opening and closing plate 201. The damping pad is in close contact with the inner wall of the guide groove. The filter material 2 blocks and filters dust particles in the airflow. The filtered clean airflow is discharged through the air outlet. The air outlet can be opened and closed by sliding the opening and closing plate 201. During the operation of the filter, the opening and closing plate 201 is in the open state to allow the airflow to pass normally. When maintenance is required, the opening and closing plate 201 is closed to prevent external pollutants from entering the center of the filter material 2 through the air outlet and contaminating the air outlet side of the filter material 2, thus reducing the difficulty of subsequent cleaning. The opening and closing plate 201 is provided with anti-slip texture to facilitate pushing the opening and closing plate 201.

[0019] The outer protective mesh 5 is detachably mounted on the upper housing 4 by bolts. The sealing cover 1 and the filter material 2 are both located inside the outer protective mesh 5. The outer protective mesh 5 provides a layer of protection for the outside of the filter material 2, preventing large foreign objects from entering the filter material 2 under the action of airflow and causing blockage and damage to the filter material 2. It can also prevent the filter material 2 from deforming and failing due to external impact. An inner protective mesh is set between the two sealing covers 1, which can support the filter material 2 and ensure the stability between the two sealing covers 1.

[0020] The rotating mechanism is mounted on the upper housing 4 and is used to drive the mounting ring 3 and the sealing cover 1 to rotate, such as Figure 3 and Figure 9As shown, the rotating mechanism includes a drive roller 301 and an anti-slip pad 303. The drive roller 301 is rotatably mounted on the upper housing 4. A motor 302 is mounted on the upper housing 4. The drive roller 301 is fixedly mounted on the output end of the motor 302. The anti-slip pad 303 is fixedly fitted on the outside of the drive roller 301. The anti-slip pad 303 abuts against the inner wall of the mounting ring 3. The motor 302 can drive the drive roller 301 to rotate, thereby driving the mounting ring 3 to rotate, which in turn drives the filter media 2 to rotate. The pleats of the filter media 2 are rotated sequentially to the self-cleaning mechanism for cleaning. The motor 302 is a stepper motor. The angle of a single rotation matches the pleat spacing of the filter media 2, enabling precise sequential cleaning of multiple pleats. Through the cooperation of the annular groove and the locking block 101, the mounting ring 3 can be limited while rotating.

[0021] The self-cleaning mechanism is used to expand the filter media 2 and scrape its surface. The self-cleaning mechanism includes an expanding component and a scraping component. The expanding component is movably mounted on the sealing cover 1 and is used to expand the pleats of the filter media 2. Figure 4 , Figure 5 and Figure 8 As shown, the expansion assembly includes a movable frame 401 and an expansion rod 403. The movable frame 401 is movably mounted on the sealing cover 1, and an electric cylinder 402 is mounted on the sealing cover 1. The movable frame 401 is fixedly mounted on the output end of the electric cylinder 402. The expansion rod 403 is bent and fixedly mounted on the movable frame 401. The expansion rod 403 can be inserted into the pleats of the filter media 2 and lift the pleats. During the rotation of the mounting ring 3 and the filter media 2, the expansion rod 403 moves away from the filter media 2 to avoid obstructing its rotation. When the filter media 2 rotates at a specific angle, the pleats and the expansion rod... When position 403 is aligned, the electric cylinder 402 can drive the moving frame 401 to approach the filter media 2, insert the spreading rod 403 into the pleats of the filter media 2 and spread the pleats open at a certain angle. The scraping component moves downward to scrape the dust on the surface of the filter media 2 to the bottom for collection. The bending position of the spreading rod 403 near the filter media 2 is the tip, which can be inserted into the pleats of the filter media 2. The angle of spreading of the spreading rod 403 is less than the bending limit of the filter media 2 to avoid damaging the filter media 2. When the next pleat is spread, the pleats on the front side automatically reset, ensuring the normal filtration function and structural stability of the filter media 2.

[0022] The scraping assembly is mounted on the expansion assembly and is used for directional cleaning of the surface of filter media 2, such as... Figure 4 , Figure 5 and Figure 7As shown, the scraping assembly includes an elastic scraper blade 501 and a cleaning brush 502. The elastic scraper blade 501 is movably mounted on a movable frame 401 and moves along the axial direction of the filter media 2. To enable the movement of the elastic scraper blade 501, a drive screw 503 is rotatably mounted on the movable frame 401. A second motor 504 is mounted on the movable frame 401, and the output shafts of the drive screw 503 and the second motor 504 are connected by a transmission mechanism. The transmission method can use a sprocket chain or a pulley. A drive block 505 is slidably mounted on the movable frame 401. The drive block 505 and the drive screw 503 are threadedly connected. A telescopic tube is provided between the drive block 505 and the movable frame 401, with the drive screw 503 located inside the telescopic tube to reduce the impact of dust on the threaded fit between the drive screw 503 and the drive block 505. An elastic scraper 501 is mounted on the drive block 505 and moves with it. A disassembly / assembly bracket 506 is fixedly connected to the elastic scraper 501. 506 is detachably mounted on the drive block 505 by bolts. The elastic scraper 501 is bent, and the cleaning brush 502 is fixedly mounted on the outside of the elastic scraper 501. The cleaning brush 502 is in contact with the surface of the spread filter media 2. The drive screw 503 can be rotated by the motor 504, thereby driving the drive block 505 to rise and fall along the moving frame 401, and driving the elastic scraper 501 and the cleaning brush 502 to rise and fall. When the spreading rod 403 spreads open the folds of the filter media 2, the drive block... When the filter media 2 is at its highest position, the cleaning brush 502 moves from top to bottom to sweep the dust on the surface of the filter media 2 downwards. After the cleaning brush 502 descends to the lowest position of the filter media 2, the electric cylinder 402 drives the moving frame 401 away from the filter media 2, so that the support rod 403 and the cleaning brush 502 move out of the folds of the filter media 2. Then, the motor 504 drives the drive block 505 and the cleaning brush 502 to rise and return to their original positions, preparing for the next cleaning inside the folds of the filter media 2.

[0023] The dust collection box 6 is detachably mounted on the side of the outer protective mesh 5 away from the upper housing 4 by bolts, such as... Figure 6As shown, a sponge 7 is installed inside the dust collection box 6, and a dust collection funnel 8 is fixedly installed on the dust collection box 6. The dust collection funnel 8 is located below the scraping assembly. The top opening of the dust collection funnel 8 is larger, and the bottom opening is smaller, so that the scraped dust can be concentrated and slide into the dust collection box 6 and reduce the dust from escaping outward. The sponge 7 inside the dust collection box 6 is filled with water and can absorb dust. A box cover 9 is threaded to the bottom of the dust collection box 6. A placement tray 10 is rotatably connected inside the box cover 9. The sponge 7 is installed on the placement tray 10. A polygonal connector 11 is fixedly connected to the top of the placement tray 10, and a connecting seat 12 is fixedly connected to the bottom of the sealing cover 1 located at the bottom. The dust collection box 6 has a through hole for the connecting seat 12 to pass through. The connecting seat 12 has a slot that matches the connector 11. The cover 9 can be unscrewed to replace the sponge 7 or clean the dust inside the dust collection box 6. When the cover 9 is installed, the connector 11 can be inserted into the slot. When the installation ring 3 rotates the filter material 2 and the sealing cover 1, the placement plate 10 and the sponge 7 can be rotated, so that different positions of the sponge 7 can be rotated to the bottom of the dust collection funnel 8, which can adsorb more dust. The dust collection box 6 has a water inlet, and a cover is sealed at the water inlet. The cover can be opened periodically to add water to the inside of the sponge 7 to ensure the dust collection effect of the sponge 7.

[0024] To better collect dust, a scraper 13 is provided on the outside of the sealing cover 1 at the bottom. The scraper 13 contacts the top of the dust collection box 6. When the drive roller 301 drives the filter material 2 to rotate, the sealing cover 1 can drive the scraper 13 to rotate, collecting the floating dust attached to the top of the dust collection box 6 into the dust collection funnel 8 and falling into the dust collection box 6 for collection, reducing the risk of dust being raised again in the filter element.

[0025] The working principle or usage process of this new type of air filter is as follows: the folded filter material 2 is installed between two sealing covers 1, the installation ring 3 is inserted into the installation groove, the installation ring 3 is limited by the locking block 101, the outer protective mesh 5 is installed on the upper housing 4 by bolts, the dust collection box 6 is installed on the outer protective mesh 5 by bolts, the filter element is installed inside the filter, the fan is located above the upper housing 4, the opening and closing plate 201 opens the air outlet, and under the action of the fan, the airflow passes through the outer protective mesh 5 and enters the filter material 2. After being filtered by the filter material 2, it is discharged through the center of the filter material 2 and the air outlet. During the filtration process, motor 302 drives drive roller 301 to rotate, thereby rotating mounting ring 3, sealing cover 1 and filter media 2. The pleats of filter media 2 rotate sequentially to the positions corresponding to the self-cleaning mechanism. Electric cylinder 402 drives moving frame 401 to approach filter media 2. Spreading rod 403 is inserted into the pleats of filter media 2 to open them. Elastic scraper 501 enters the pleats of filter media 2 along with moving frame 401 and spreading rod 403. Initially, elastic scraper 501 is at its highest position. Motor 504 drives drive block 505 to descend. Sweeping brush 502 scrapes dust from top to bottom. The dust falls into dust collection box 6 through dust collection funnel 8 and is absorbed by sponge 7. Electric cylinder 402 drives moving frame 401 away from filter media 2, so that the self-cleaning mechanism moves out of the pleats of filter media 2. Filter media 2 continues to rotate. Drive block 505 drives elastic scraper 501 to rise to its original position to prepare for the next cleaning. The sealing cover 1 rotates the placement tray 10 and the sponge 7, allowing the sponge 7 to evenly absorb dust at different positions. The dust collection box 6 can be cleaned out or the sponge 7 can be replaced by periodically unscrewing the box cover 9. When replacing or repairing the filter element, the air outlet is closed by the opening and closing plate 201 to seal the air outlet side of the filter material 2, preventing external pollutants from entering.

[0026] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel air filter element, comprising two sealing caps (1) and filter material (2) folded between the two sealing caps (1), characterized in that, Also includes: The upper housing (4) has a mounting ring (3) fixedly provided on one of the sealing covers (1), and the upper housing (4) is provided with a mounting component for limiting the mounting ring (3); An opening and closing component is provided on the upper housing (4) for opening and closing the air outlet. The outer protective net (5) is detachably mounted on the upper housing (4), and the sealing cover (1) and the filter material (2) are both located inside the outer protective net (5); A rotating mechanism is provided on the upper housing (4) for driving the mounting ring (3) and the sealing cover (1) to rotate; The self-cleaning mechanism is used to open the filter material (2) and scrape the surface of the filter material (2). The self-cleaning mechanism includes an opening component and a scraping component. The expansion component is movably disposed on the sealing cover (1) and is used to expand the pleats of the filter material (2); The scraping component is disposed on the spreading component and is used to perform directional cleaning of the surface of the filter material (2); Dust collection box (6), the dust collection box (6) is detachably disposed on the side of the outer protective net (5) away from the upper shell (4), the interior of the dust collection box (6) is provided with sponge (7), and the dust collection funnel (8) is fixedly disposed on the dust collection box (6).

2. The novel air filter element according to claim 1, characterized in that, The mounting component includes: The upper housing (4) has multiple locking grooves, and the locking block (101) is set inside the locking grooves by a telescopic rod and a locking spring (102); The mounting ring (3) has an annular groove that matches the locking block (101), and the mounting ring (3) has an mounting groove that matches the mounting ring (3). When the mounting ring (3) is installed inside the mounting groove, the locking block (101) is located inside the annular groove.

3. The novel air filter element according to claim 1, characterized in that, The opening / closing element includes: The opening and closing plate (201) has a guide groove on the upper housing (4). The opening and closing plate (201) is slidably disposed inside the guide groove. There is sliding damping between the opening and closing plate (201) and the guide groove.

4. The novel air filter element according to claim 1, characterized in that, The rotating mechanism includes: A drive roller (301) is rotatably mounted on the upper housing (4); Anti-slip pad (303) is fixedly fitted on the outside of the drive roller (301), and the anti-slip pad (303) and the inner wall of the mounting ring (3) are pressed together.

5. A novel air filter element according to claim 1, characterized in that, The expanding component includes: A movable frame (401) is movably mounted on the sealing cover (1); The support rod (403) is bent and fixedly mounted on the movable frame (401). The support rod (403) can be inserted into the pleats of the filter material (2) and lift the pleats.

6. A novel air filter element according to claim 5, characterized in that, The scraping assembly includes: An elastic scraper (501) is movably mounted on the movable frame (401). The elastic scraper (501) moves along the axial direction of the filter material (2). The elastic scraper (501) is bent. A cleaning brush (502) is fixedly disposed outside the elastic scraper (501), and the cleaning brush (502) is in contact with the surface of the spread filter material (2).

7. A novel air filter element according to claim 6, characterized in that, A drive screw (503) is rotatably mounted on the movable frame (401), and a drive block (505) is slidably mounted on the movable frame (401). The drive block (505) and the drive screw (503) are threadedly connected. The elastic scraper (501) is mounted on the drive block (505) and moves with the drive block (505).

8. A novel air filter element according to claim 7, characterized in that, The elastic scraper (501) is fixedly connected to a disassembly frame (506), which is detachably mounted on the drive block (505) by bolts.

9. A novel air filter element according to claim 1, characterized in that, A scraper (13) is provided on the outside of the sealing cover (1) located at the bottom, and the scraper (13) is in contact with the top of the dust collection box (6).

10. A novel air filter element according to claim 1, characterized in that, The dust collection funnel (8) is located below the scraping assembly.

Images