Self-cleaning snap-on filter cartridge

Abstract

This application relates to the field of filter technology, and in particular to a self-cleaning snap-on filter element, including an end cap ring, a bottom plate, a filter assembly, and a cleaning component. The filter assembly includes connecting rods, a supporting metal mesh, and a filter layer. The connecting rods are disposed between the end cap ring and the bottom plate, with their length direction parallel to the axis of the end cap ring. Multiple connecting rods are evenly arranged circumferentially along the axis of the end cap ring. The supporting metal mesh is detachably disposed between two adjacent connecting rods. The filter layer is disposed between two adjacent connecting rods, and a connecting member is provided between the filter layer and the connecting rod for connection. The cleaning component includes a slider slidably disposed on the connecting rod, which slides along the length direction of the connecting rod. A cleaning plate is disposed between the sliders on two adjacent connecting rods for cleaning dust from the surface of the filter layer. A driving component is provided on the connecting rod to drive the slider to slide. This application has the effect of reducing the difficulty and cost of cleaning air filters.

Description

Technical Field

[0001] This application relates to the field of filter technology, and in particular to a self-cleaning snap-on filter. Background Technology

[0002] A filter element is a core component used to filter impurities, particulate matter, microorganisms, etc., from fluids (liquids or gases). It typically consists of a filter medium and a support structure, and can be classified into air filters, water filters, oil filters, etc., depending on the application. They are widely used in mining equipment, automotive air purifiers, chemical equipment, household water purifiers, medical equipment, and other fields.

[0003] Air filters primarily filter impurities and particulate matter from the air to improve air quality. However, as the filter is used for a longer period, a layer of dust will gradually accumulate on its outer surface. This dust will affect airflow, reducing the airflow efficiency of the filter and consequently decreasing its air purification effectiveness. It will also increase the load on the exhaust fan, thus requiring the filter to be cleaned.

[0004] Traditional cleaning methods involve disassembling the air filter and cleaning it with a high-pressure air gun or a brush. However, in actual use, especially in construction equipment in mines, the air contains a high amount of dust, so the air filter needs to be cleaned frequently. Since mines are located in the field, they do not have the conditions to use high-pressure air guns and their supporting equipment, so it is not possible to use high-pressure air guns to clean the air filter. Cleaning with a brush is also time-consuming and laborious for workers, which has its shortcomings. Summary of the Invention

[0005] To address the issue of time-consuming and laborious cleaning of traditional air filters, this application provides a self-cleaning snap-on filter.

[0006] The self-cleaning snap-on filter element provided in this application adopts the following technical solution: A self-cleaning snap-on filter element includes an end cap ring, a bottom plate, a filter assembly, and a cleaning component. The filter assembly includes a connecting rod, a supporting metal mesh, and a filter layer. The connecting rod is disposed between the end cap ring and the bottom plate, and its length direction is parallel to the axis of the end cap ring. Multiple connecting rods are evenly arranged circumferentially along the axis of the end cap ring. The supporting metal mesh is detachably disposed between two adjacent connecting rods. The filter layer is disposed between two adjacent connecting rods. A connecting component is provided between the filter layer and the connecting rod for connection. The filter layer is located on the side of the supporting metal mesh facing away from the axis of the end cap ring. The cleaning component includes a slider slidably disposed on the connecting rod. The slider slides along the length direction of the connecting rod. A cleaning plate is disposed between the sliders on two adjacent connecting rods. The cleaning plate is used to clean dust from the surface of the filter layer. The filter layer is located between the cleaning plate and the supporting metal mesh. A driving component is provided on the connecting rod to drive the slider to slide.

[0007] Optionally, the driving component includes an intermediate frame, a connecting rod disposed on the intermediate frame, a shaft slidably disposed on the intermediate frame, a carriage disposed at the top of the shaft, a guide groove for the carriage to slide on the connecting rod, a gravity block disposed at the bottom of the shaft, the intermediate frame being located between the carriage and the gravity block, an inner reversing wheel and an outer reversing wheel rotatably disposed at the end of the connecting rod, the connecting rod being located between the inner reversing wheel and the outer reversing wheel, a pull rope being wound together on the inner reversing wheel and the outer reversing wheel at both ends of the connecting rod, a wire hole for the pull rope to pass through being opened between opposite sides of the connecting rod, and the slider and the carriage being disposed on the pull rope.

[0008] Optionally, multiple sliders are evenly arranged on the connecting rod.

[0009] By adopting the above technical solution, when maintenance personnel remove the filter element for cleaning, they pull the shaft, which causes the slide and gravity block to rise synchronously. Simultaneously, the slide moves the pull rope. Under the reversing action of the inner and outer reversing wheels, the pull rope located outside the connecting rod drives multiple sliders to slide downwards synchronously. These sliders, in turn, move the cleaning plates downwards synchronously. During the movement of the cleaning plates, the supporting metal mesh consistently supports the inner side of the filter layer, while the multiple cleaning plates constrain and restrict the outer side of the filter layer, thus allowing the cleaning plates to... The system effectively removes dust adhering to the filter layer surface. Afterward, the maintenance personnel release the shaft, and under the gravity of the slide and the weight block, the slide moves downward and eventually impacts the intermediate frame. The intermediate frame vibrates and transmits the vibration to the filter layer, causing the dust adhering to the filter layer to be shaken off. The pull rope then drives the cleaning plate upward to reset via the slider. Finally, the maintenance personnel can complete the cleaning operation of the filter layer by repeatedly pulling the shaft, which greatly improves the cleaning efficiency of the filter element and enables the filter element to have a self-cleaning effect even in complex field working environments.

[0010] Optionally, a sealing ring is provided on the wire hole of the connecting rod, and the sealing ring is sleeved on the pull rope.

[0011] By adopting the above technical solution, the possibility of dust spreading through the wire hole is reduced.

[0012] Optionally, the cleaning plate includes a scraper and a brush plate, the brush plate is provided with bristles that abut against the surface of the filter layer, the scraper is attached to the surface of the filter layer, and the slider is disposed at both ends of the scraper.

[0013] By adopting the above technical solution, as the slider drives the scraper to slide vertically downward, the scraper will first scrape off the dust attached to the surface of the filter layer, while the bristles on the brush plate will sweep the surface of the filter layer. During the vertical reciprocating sliding of the slider, the bristles on the brush plate will continuously sweep the surface of the filter layer, thereby cleaning the dust attached to the surface of the filter layer. With the combined action of multiple brush plates, the cleaning time of the filter layer is greatly reduced.

[0014] Optionally, the connector includes connecting skirts disposed on both sides of the connecting rod along its length, and the side edges of the filter layer are sewn onto the connecting skirts.

[0015] By adopting the above technical solution and using a sewing method, the difficulty of connecting the filter layer and the connecting skirt is reduced, while ensuring the stability of the connection.

[0016] Optionally, both the end cap ring and the bottom plate are provided with receiving grooves, the end of the connecting rod is inserted into the receiving groove, the top and bottom of the filter layer are located in the receiving groove, and the receiving groove is filled with adhesive.

[0017] By adopting the above technical solution, the adhesive can greatly reduce the assembly cost and difficulty of the filter element. At the same time, the cooperation between the receiving groove and the adhesive can effectively ensure the sealing performance of the receiving groove after bonding.

[0018] Optionally, the end cap ring is provided with a plurality of lugs on both the outer and inner circumferential sides, and the lugs on the outer circumferential side and the lugs on the inner circumferential side of the end cap ring are arranged alternately.

[0019] By adopting the above technical solutions, the installation difficulty and cost of filter elements have been reduced.

[0020] Optionally, slots are provided on both sides of the connecting rod along its length, and the side of the supporting metal mesh is inserted into the slots.

[0021] In summary, this application includes at least one of the following beneficial technical effects: When maintenance personnel remove the filter element for cleaning, they pull the shaft, which causes the slide and gravity block to rise synchronously. Simultaneously, the slide moves the pull rope. Under the reversing action of the inner and outer reversing wheels, the pull rope located outside the connecting rod drives multiple sliders to slide downwards synchronously. These sliders, in turn, move the cleaning plate downwards. During the movement of the cleaning plate, the supporting metal mesh consistently supports the inner side of the filter layer, while the multiple cleaning plates constrain and restrict the outer side of the filter layer. This allows the cleaning plate to stably remove dust adhering to the filter layer surface. Afterwards, the maintenance personnel release the shaft. Under the weight of the slide and gravity block, the slide moves downwards and eventually impacts the intermediate frame. Vibration is generated on the intermediate frame and transmitted to the filter layer, causing the dust to be shaken off. The pull rope then drives the cleaning plate upwards to reset via the sliders. Finally, the maintenance personnel can complete the cleaning of the filter layer by repeatedly pulling the shaft, greatly improving the cleaning efficiency of the filter element and enabling it to self-clean even in complex outdoor working environments. As the slider moves the scraper vertically downwards, the scraper first removes the dust adhering to the filter layer surface, while the bristles on the brush plate sweep the surface of the filter layer. During the vertical reciprocating movement of the slider, the bristles on the brush plate continuously sweep the surface of the filter layer, thereby cleaning the dust adhering to the filter layer surface. With the combined action of multiple brush plates, the cleaning time of the filter layer is greatly reduced. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0023] Figure 2 This is a cross-sectional view used in the embodiments of this application to illustrate the positional relationship between the filter layer, connecting rod and supporting metal mesh.

[0024] Figure 3 This is a cross-sectional view used in the embodiments of this application to illustrate the positional relationship between the shaft, connecting rod, and gravity block.

[0025] Explanation of reference numerals in the attached drawings: 1. End cap ring; 2. Bottom end plate; 3. Filter assembly; 31. Connecting rod; 32. Supporting metal mesh; 33. Filter layer; 34. Connecting skirt; 4. Cleaning component; 41. Slider; 42. Cleaning plate; 421. Scraper; 422. Brush plate; 423. Brush bristles; 43. Drive component; 431. Intermediate frame; 432. Shaft; 433. Slide; 434. Guide groove; 435. Gravity block; 436. Inner reversing wheel; 437. Outer reversing wheel; 438. Pull rope; 439. Wire hole; 5. Sealing ring; 6. Receiving groove; 7. Lug; 8. Slot; 9. Sealing ring; 10. Guide post. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0027] This application discloses a self-cleaning snap-on filter element.

[0028] Reference Figure 1 , Figure 2 and Figure 3 A self-cleaning snap-on filter element includes an end cap ring 1, a bottom plate 2, a filter assembly 3, and a cleaning component 4. The end cap ring 1 has multiple lugs 7 integrally formed on both the outer and inner circumferential sides. The lugs 7 on the outer circumferential side and the lugs 7 on the inner circumferential side of the end cap ring 1 are arranged alternately. A sealing ring 9 is arranged on the top of the end cap ring 1.

[0029] Reference Figure 1 and Figure 2 The filter assembly 3 includes a connecting rod 31, a supporting metal mesh 32, and a filter layer 33. The filter layer 33 can be made of non-woven fabric and is folded into a continuous Z-shaped structure. The connecting rod 31 is arranged between the end cap ring 1 and the bottom plate 2. The length direction of the connecting rod 31 is parallel to the axial direction of the end cap ring 1. Three connecting rods 31 are evenly arranged circumferentially along the axial direction of the end cap ring 1.

[0030] Reference Figure 1 and Figure 2 The supporting metal mesh 32 is detachably arranged between two adjacent connecting rods 31. The connecting rods 31 have slots 8 on both sides along their length, and the side of the supporting metal mesh 32 is inserted into the slots 8.

[0031] Reference Figure 1 and Figure 2The filter layer 33 is arranged between two adjacent connecting rods 31. A connector is arranged between the filter layer 33 and the connecting rod 31 for connection. The connector includes a connecting skirt 34 bonded to both sides of the connecting rod 31 in the length direction. The side of the filter layer 33 is sewn onto the connecting skirt 34.

[0032] Reference Figure 1 , Figure 2 and Figure 3 Both the end cap ring 1 and the bottom plate 2 are provided with receiving grooves 6. The end of the connecting rod 31 is inserted into the receiving groove 6. The top and bottom of the filter layer 33 are located in the receiving groove 6. The receiving groove 6 is filled with adhesive.

[0033] Reference Figure 1 , Figure 2 and Figure 3 The filter layer 33 is located on the side of the supporting metal mesh 32 facing away from the axis of the end cap ring 1. The cleaning component 4 includes a plurality of sliders 41 slidably arranged on the connecting rod 31. The sliders 41 slide along the length direction of the connecting rod 31. The plurality of sliders 41 are evenly distributed on the connecting rod 31. A cleaning plate 42 is arranged between the opposing sliders 41 on two adjacent connecting rods 31.

[0034] Reference Figure 1 , Figure 2 and Figure 3 The cleaning plate 42 includes a scraper 421 and a brush 422. Both the scraper 421 and the brush 422 are made of plastic. The scraper 421 has an arc-shaped toothed structure. Each tooth on the scraper 421 is located in the pleats of the filter layer 33. The brush 422 is attached to the scraper 421. Brush bristles 423 are attached to the brush 422. The brush bristles 423 abut against the surface of the filter layer 33. The scraper 421 is attached to the surface of the filter layer 33. The slider 41 is bolted to both ends of the scraper 421.

[0035] The supporting metal mesh 32 and scraper 421 confine the filter layer 33 between the end cap ring 1 and the bottom plate 2. When the filter element is in operation, outside air flows into the interior of the filter element through the supporting metal mesh 32 via the filter layer 33, and the filter layer 33 filters the air that flows through it.

[0036] Reference Figure 1 , Figure 2 and Figure 3 The cleaning plate 42 is used to clean the dust on the surface of the filter layer 33. The filter layer 33 is located between the cleaning plate 42 and the supporting metal mesh 32. The connecting rod 31 is provided with a driving component 43 for the sliding of the slider 41.

[0037] Reference Figure 1 , Figure 2 and Figure 3The driving component 43 includes an intermediate frame 431 that is generally triangular in shape. Three connecting rods 31 are all bolted to the intermediate frame 431. A shaft 432 is vertically slidably connected to the intermediate frame 431. A slide 433 with a triangular cross-section is bolted to the top of the shaft 432. A guide groove 434 for the slide 433 to slide is provided on the connecting rod 31. A guide post 10 is bolted in the guide groove 434 of the connecting rod 31. The slide 433 is slidably sleeved on the guide post 10. A gravity block 435 is welded to the bottom of the shaft 432. The intermediate frame 431 is located between the slide 433 and the gravity block 435.

[0038] Reference Figure 1 and Figure 3 The end of the connecting rod 31 is rotatably connected to the inner reversing wheel 436 and the outer reversing wheel 437. The connecting rod 31 is located between the inner reversing wheel 436 and the outer reversing wheel 437. A pull rope 438 is wound on the inner reversing wheel 436 and the outer reversing wheel 437 at both ends of the connecting rod 31. The pull rope 438 can be a thin steel wire rope in the prior art.

[0039] Reference Figure 1 and Figure 3 A wire hole 439 is provided between the two opposite sides of the connecting rod 31 for the pull rope 438 to pass through. A sealing ring 5 is arranged on the wire hole 439 of the connecting rod 31. The sealing ring 5 can be made of rubber material. The sealing ring 5 is sleeved on the pull rope 438. The slider 41 and the slide 433 are both attached to the pull rope 438.

[0040] After the maintenance personnel disassembled the filter element, they pulled the shaft 432 upward. The shaft 432 caused the slide 433 and the gravity block 435 to rise synchronously. The slide 433 caused the connected pull rope 438 to rise synchronously. Under the reversing action of the inner reversing wheel 436 and the outer reversing wheel 437, the pull rope 438 on the outside of the connecting rod 31 caused the slider 41 to move vertically downward. The slider 41 caused the scraper 421 to move downward synchronously.

[0041] As the cleaning plate 42 slides downward, the supporting metal mesh 32 always supports the inner side of the filter layer 33, while the multiple scrapers 421 constrain and restrict the outer side of the filter layer 33. The scrapers 421 scrape off the debris attached to the filter layer 33, while the bristles 423 on the brush plate 422 brush off the dust remaining on the filter layer 33 during the vertical sliding process. The multiple brush plates 422 shorten the distance that the bristles 423 need to brush in a single stroke, and at the same time reduce the distance that the shaft 432 moves in a single stroke.

[0042] When the slide 433 moves to its highest point, the maintenance personnel release the shaft 432. Under the combined gravity of the slide 433, shaft 432, and gravity block 435, the slide 433 moves downward and eventually impacts the intermediate frame 431. The intermediate frame 431 will vibrate and transmit the vibration to the filter layer 33 through the connecting rod 31, causing the filter layer 33 to vibrate as well. The vibration will shake off the dust attached to the filter layer 33.

[0043] The pull rope 438 will drive the cleaning plate 42 to slide upward and reset via the slider 41. The slider 41 will drive the bristles 423 on the brush plate 422 to brush the filter layer 33 again. Finally, the maintenance personnel will repeatedly pull and release the shaft 432 multiple times, so that the bristles 423 on the brush plate 422 can repeatedly brush the filter layer 33, thereby improving the cleaning efficiency of the filter element and enabling the filter element to have a high self-cleaning effect even in complex working environments.

[0044] The implementation principle of a self-cleaning snap-on filter element in this application embodiment is as follows: the supporting metal mesh 32 and the scraper 421 restrict the filter layer 33 between the end cap ring 1 and the bottom plate 2. The multiple spaced scrapers 421 can keep the filter layer 33 in a stable structure. When the filter element is in operation, the outside air flows into the interior of the filter element through the filter layer 33 and the supporting metal mesh 32, and the filter layer 33 filters the air that flows through.

[0045] After the maintenance personnel disassemble the filter element, they pull the shaft 432 upward from the end cap ring 1. The shaft 432 drives the slide 433 and the gravity block 435 to rise synchronously. The slide 433 drives the pull rope 438 connected to it to rise synchronously. Under the reversing action of the inner reversing wheel 436 and the outer reversing wheel 437, the pull rope 438 on the outside of the connecting rod 31 will drive the slider 41 to move vertically downward synchronously. The slider 41 will drive the scraper 421 to move downward synchronously.

[0046] As the cleaning plate 42 slides downward, the supporting metal mesh 32 always supports the inner side of the filter layer 33, while the multiple spaced scrapers 421 still constrain and restrict the outer side of the filter layer 33. As the scrapers 421 slide downward, they scrape off the dust and other debris attached to the surface of the filter layer 33.

[0047] As the brush bristles 423 slide vertically downward along the brush plate 422, they brush off the dust remaining on the filter layer 33. At the same time, the multiple brush plates 422 shorten the distance that the brush bristles 423 need to brush in a single stroke along the length of the connecting rod 31, and also reduce the distance that the shaft 432 moves in a single stroke. This greatly reduces the maximum length that maintenance personnel can pull the shaft 432 in a single stroke, so that the shaft 432 can always be accommodated inside the filter element.

[0048] When the slide 433 moves to its highest point, the maintenance personnel release the shaft 432. Under the combined gravity of the slide 433, shaft 432, and gravity block 435, the slide 433 moves downward and eventually impacts the intermediate frame 431. The intermediate frame 431 will vibrate and transmit the vibration to the filter layer 33 through the connecting rod 31, causing the filter layer 33 to vibrate as well. The vibration will shake off the dust attached to the filter layer 33.

[0049] At the same time, the pull rope 438 will drive the scraper 421 to slide upward and reset through the slider 41. The scraper 421 will drive the bristles 423 on the brush plate 422 to brush the surface of the filter layer 33 again. After that, the maintenance personnel will repeatedly pull and release the shaft 432 multiple times, so that the bristles 423 on the brush plate 422 can repeatedly brush the surface of the filter layer 33, thereby reducing the wind resistance of the filter element and improving the filtration effect of the filter element on the air. At the same time, the filter element can also have a strong self-cleaning function in complex working environments.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-cleaning snap-on filter element, characterized in that: The system includes an end cap ring (1), a bottom plate (2), a filter assembly (3), and a cleaning component (4). The filter assembly (3) includes a connecting rod (31), a supporting metal mesh (32), and a filter layer (33). The connecting rod (31) is disposed between the end cap ring (1) and the bottom plate (2). The length direction of the connecting rod (31) is parallel to the axial direction of the end cap ring (1). Multiple connecting rods (31) are evenly arranged circumferentially along the axial direction of the end cap ring (1). The supporting metal mesh (32) is detachably disposed between two adjacent connecting rods (31). The filter layer (33) is disposed between two adjacent connecting rods (31). The filter layer (33) and the connecting rod (31) are connected by a connecting rod (31). A connector for connection is provided between the filter layer (33) and the support metal mesh (32) on the side opposite to the axis of the end cap ring (1). The cleaning component (4) includes a slider (41) slidably disposed on the connecting rod (31). The slider (41) slides along the length direction of the connecting rod (31). A cleaning plate (42) is provided between the sliders (41) on two adjacent connecting rods (31). The cleaning plate (42) is used to clean the dust on the surface of the filter layer (33). The filter layer (33) is located between the cleaning plate (42) and the support metal mesh (32). A driving component (43) for driving the slider (41) to slide is provided on the connecting rod (31).

2. The self-cleaning snap-on filter element according to claim 1, characterized in that: The driving component (43) includes an intermediate frame (431), the connecting rod (31) is disposed on the intermediate frame (431), a shaft (432) is slidably disposed on the intermediate frame (431), a slide (433) is disposed at the top of the shaft (432), a guide groove (434) is provided on the connecting rod (31) for the slide (433) to slide, a gravity block (435) is disposed at the bottom of the shaft (432), the intermediate frame (431) is located between the slide (433) and the gravity block (435), and the connecting rod (31) is disposed on the intermediate frame (431) for the slide (433) to slide. 1) The end of the rod is rotatably provided with an inner reversing wheel (436) and an outer reversing wheel (437). The connecting rod (31) is located between the inner reversing wheel (436) and the outer reversing wheel (437). A pull rope (438) is wound on the inner reversing wheel (436) and the outer reversing wheel (437) at both ends of the connecting rod (31). A wire hole (439) is opened between the opposite sides of the connecting rod (31) for the pull rope (438) to pass through. The slider (41) and the carriage (433) are both set on the pull rope (438).

3. The self-cleaning snap-on filter element according to claim 2, characterized in that: Multiple sliders (41) are evenly arranged on the connecting rod (31).

4. A self-cleaning snap-on filter element according to claim 2, characterized in that: A sealing ring (5) is provided on the wire hole (439) of the connecting rod (31), and the sealing ring (5) is sleeved on the pull rope (438).

5. A self-cleaning snap-on filter element according to claim 1, characterized in that: The cleaning plate (42) includes a scraper (421) and a brush plate (422). The brush plate (422) is provided with bristles (423), which abut against the surface of the filter layer (33). The scraper (421) is attached to the surface of the filter layer (33), and the slider (41) is disposed at both ends of the scraper (421).

6. A self-cleaning snap-on filter element according to claim 1, characterized in that: The connector includes connecting skirts (34) disposed on both sides of the connecting rod (31) along its length, and the side of the filter layer (33) is sewn onto the connecting skirts (34).

7. A self-cleaning snap-on filter element according to claim 6, characterized in that: Both the end cap ring (1) and the bottom plate (2) are provided with receiving grooves (6), the end of the connecting rod (31) is inserted into the receiving groove (6), the top and bottom of the filter layer (33) are located in the receiving groove (6), and the receiving groove (6) is filled with adhesive.

8. A self-cleaning snap-on filter element according to claim 1, characterized in that: The end cap ring (1) is provided with a plurality of lugs (7) on both the outer and inner sides of the circumference. The lugs (7) on the outer side of the end cap ring (1) and the lugs (7) on the inner side of the circumference are arranged alternately.

9. A self-cleaning snap-on filter element according to claim 1, characterized in that: The connecting rod (31) has slots (8) on both sides along its length, and the side of the supporting metal mesh (32) is inserted into the slots (8).

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