A high flux pleated security filter cartridge

Abstract

The application belongs to the technical field of filter elements, and discloses a high-flux folded security filter element, which comprises a folded filter element, a sealing plate, a mounting ring and an inlet pipe. A plurality of first inner plates are circumferentially and spacedly arranged near the central opening of the mounting ring, and a plurality of first outer plates are circumferentially and spacedly arranged away from the central opening. A plurality of second inner plates are circumferentially and spacedly arranged near the center of the sealing plate, and a plurality of second outer plates are circumferentially and spacedly arranged away from the center. The two sides of the first inner plate are respectively axially and slidably connected with the adjacent second inner plate, and the two sides of the first outer plate are respectively axially and slidably connected with the adjacent second outer plate. The axial sliding connection of the first inner plate with the second inner plate and the axial sliding connection of the first outer plate with the second outer plate realize dynamic adjustment of the filtering area of the filter element. When the flow rate is low, the sealing plate is close to the mounting ring, the folded filter element has dense wrinkles, and the filtering effect is good. When the flow rate is high, the fluid pressure drives the sealing plate and the mounting ring to be axially separated, the wrinkles are unfolded to expand the channel and reduce the pressure, and the filtering efficiency is ensured.

Description

Technical Field

[0001] This utility model relates to the field of filter element technology, and in particular to a high-throughput pleated security filter element. Background Technology

[0002] The filter element is the heart of a filter, as the name suggests. The filter element, and the core principle of a filter, is to purify raw materials and facilitate their reuse. Filter elements are commonly used in oil filtration, water filtration, and air filtration. They remove small amounts of impurities from the filter medium, protecting the equipment and ensuring air cleanliness. When fluid passes through a filter element with a certain precision, impurities are blocked, while clean fluid flows out. A pleated filter element is a microporous pleated filter element, primarily made of materials such as stainless steel wire mesh, sintered mesh, polypropylene, polytetrafluoroethylene, polyethersulfone, and nylon.

[0003] Currently, the pleat density of traditional pleated filter cartridges is completely fixed and cannot be adjusted. When encountering high flow conditions, if the pleat density is already high, it will inevitably create a severe pressure drop resistance, which will not only significantly weaken the filtration power, but also cause the filtration efficiency to drop precipitously. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a high-throughput pleated security filter element.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-throughput pleated security filter element, comprising a pleated filter element, wherein a sealing plate and an mounting ring are respectively provided at both ends of the pleated filter element, an inlet pipe is provided on the side of the mounting ring away from the pleated filter element, a plurality of first inner plates are circumferentially spaced near the central opening of the mounting ring, and a plurality of first outer plates are circumferentially spaced away from the central opening, wherein a plurality of second inner plates are circumferentially spaced near the center of the sealing plate, and a plurality of second outer plates are circumferentially spaced away from the center, wherein the two sides of the first inner plates are respectively axially slidingly engaged with the adjacent second inner plates, and the two sides of the first outer plates are respectively axially slidingly engaged with the adjacent second outer plates, wherein a plurality of flow holes are provided on the first inner plates, second inner plates, first outer plates, and second outer plates.

[0006] By adopting the above technical solution, and setting up a pleated filter element, sealing plate, and mounting ring, with the axial sliding fit between the first inner plate and the second inner plate, and between the first outer plate and the second outer plate, dynamic adjustment of the filter element's filtration area is achieved. At low flow rates, the sealing plate's proximity to the mounting ring makes the pleats of the pleated filter element dense, resulting in good filtration. At high flow rates, the fluid pressure inside the pleated filter element increases, pushing the sealing plate and mounting ring to separate axially, causing the pleats of the pleated filter element to unfold, expanding the channels, reducing pressure drop, and ensuring filtration efficiency. The flow holes ensure uniform fluid flow.

[0007] Furthermore, a first inner ring is provided on the upper part of several first inner plates, and a second inner ring is provided on the lower part of several second inner plates.

[0008] By adopting the above technical solution, a first inner ring and a second inner ring are set up. The setting of the first inner ring and the second inner ring connects the dispersed first inner plate and the second inner plate into a whole, ensuring that the first inner plate and the second inner plate slide synchronously in the axial direction, avoiding uneven fluid channels caused by the offset of a single first inner ring or the second inner ring, and enhancing the overall integrity of the inner plate structure.

[0009] Furthermore, a compression spring is provided between the first inner ring and the second inner ring, with the upper end of the compression spring connected to the first inner ring and the lower end connected to the second inner ring.

[0010] By adopting the above technical solution and setting a compression spring, the spring force and fluid pressure feedback are used to cause the first inner plate and the second inner plate to move axially closer when the flow rate is low, so that the pleats of the pleated filter element are densely compressed and the filtration effect is good. When the flow rate is high, the fluid pressure overcomes the spring force and pushes the first inner plate and the second inner plate to separate axially, the fluid channel is increased, the pressure drop is reduced, and adaptive adjustment is achieved, and pressure fluctuations can be buffered.

[0011] Furthermore, the outer wall of the first inner ring slides in contact with the surfaces of several second inner plates, and the outer wall of the second inner ring slides in contact with the surfaces of several first inner plates.

[0012] Furthermore, a first outer ring is provided in the middle of several first outer plates, and a second outer ring is provided in the lower part of several second outer plates.

[0013] By adopting the above technical solution, a first outer ring and a second outer ring are set up. The first and second outer rings integrate the dispersed first and second outer plates, avoiding uneven fluid distribution in the edge area due to the displacement of the first or second outer plate. This enhances the support of the outer plates for the edges of the pleated filter element and improves the overall impact resistance of the filter element. Furthermore, when the sealing plate moves away from the mounting ring to a preset position under high flow conditions, the second outer ring contacts and limits the second outer ring, preventing further displacement and thus controlling the maximum movement distance of the sealing plate within a safe range. This avoids the risk of structural failure such as wrinkling and tearing of the pleated filter element due to excessive movement of the sealing plate at high flow rates.

[0014] Furthermore, the inner wall of the first outer ring slides in contact with the surfaces of several second outer plates, and the inner wall of the second outer ring slides in contact with the surfaces of several first outer plates.

[0015] Furthermore, a limit ring is provided on the inner wall of the mounting ring.

[0016] In summary, this utility model has the following beneficial effects: In this application, the pleated filter element, sealing plate, and mounting ring are configured, and the axial sliding fit between the first inner plate and the second inner plate, and between the first outer plate and the second outer plate, achieves dynamic adjustment of the filter element's filtration area. At low flow rates, the sealing plate's proximity to the mounting ring makes the pleats of the pleated filter element dense, resulting in good filtration. At high flow rates, the fluid pressure inside the pleated filter element increases, pushing the sealing plate and mounting ring to separate axially, causing the pleats of the pleated filter element to unfold, expanding the channels, reducing pressure drop, and ensuring filtration efficiency. The flow holes ensure uniform fluid flow. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 A sectional view;

[0019] Figure 3 This is a structural schematic diagram of the mounting ring, the first inner plate, and the first outer plate according to an embodiment of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the sealing plate, the second inner plate, and the second outer plate in an embodiment of this utility model.

[0021] In the diagram: 10. Folded filter element; 20. Sealing plate; 21. Second inner plate; 22. Second outer plate; 23. Second inner ring; 24. Second outer ring; 30. Mounting ring; 31. Inlet pipe; 32. First inner plate; 33. First outer plate; 34. First inner ring; 35. First outer ring; 36. Limiting ring; 40. Flow hole; 50. Compression spring. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] like Figure 1-4 As shown in the illustration, this application discloses a high-throughput pleated security filter element, including a pleated filter element 10, a sealing plate 20, and a mounting ring 30. The pleated filter element 10 is generally corrugated tubular. The sealing plate 20 and the mounting ring 30 are respectively fixedly disposed at both ends of the pleated filter element 10. An inlet pipe 31 is provided on the side of the mounting ring 30 away from the pleated filter element 10, and the inlet pipe 31 is concentrically arranged with the mounting ring 30. Under pressure, the fluid uniformly permeates through the pleated filter element 10. After the filtration process that traps impurities, the clean fluid exits from the outside of the pleated filter element 10, completing the filtration.

[0024] Specifically, the mounting ring 30 has several first inner plates 32 spaced circumferentially near its central opening and several first outer plates 33 spaced circumferentially away from its central opening. The sealing plate 20 has several second inner plates 21 spaced circumferentially near its center and several second outer plates 22 spaced circumferentially away from its center. The two sides of the first inner plates 32 slide axially with the adjacent second inner plates 21, and the two sides of the first outer plates 33 slide axially with the adjacent second outer plates 22. The folded filter element 10 is located between the first inner plates 32 and 21 and the first outer plates 33 and 22. Several flow holes 40 are provided on the first inner plates 32, 21, 33, and 22. The axial sliding fit between the first inner plates 32 and 21, and between the first outer plates 33 and 22, enables dynamic adjustment of the filter element's filtration area. At low flow rates, the sealing plate 20, located near the mounting ring 30, makes the pleats of the pleated filter element 10 dense, resulting in good filtration. At high flow rates, the fluid pressure inside the pleated filter element 10 increases, pushing the sealing plate 20 and mounting ring 30 to separate axially. The pleats of the pleated filter element 10 then unfold, expanding the channels and reducing pressure drop, thus ensuring filtration efficiency. The flow hole 40 ensures uniform fluid flow. A limit ring 36 is provided on the inner wall of the mounting ring 30.

[0025] In the configuration, a first inner ring 34 is shared on the upper part of several first inner plates 32, and a second inner ring 23 is shared on the lower part of several second inner plates 21. Both the first inner ring 34 and the second inner ring 23 are concentrically arranged with the mounting ring 30. The first inner ring 34 is fixedly connected to the side of the first inner plate 32 near the center line of the mounting ring 30, and the second inner ring 23 is fixedly connected to the side of the second inner plate 21 near the center line of the mounting ring 30. The arrangement of the first inner ring 34 and the second inner ring 23 connects the dispersed first inner plates 32 and second inner plates 21 into a whole, ensuring that the first inner plates 32 and second inner plates 21 slide axially synchronously. This avoids uneven fluid channels caused by the misalignment of a single first inner ring 34 or second inner ring 23, enhancing the overall structural integrity of the inner plates. The outer wall of the first inner ring 34 slides in contact with the surface of several second inner plates 21, and the outer wall of the second inner ring 23 slides in contact with the surface of several first inner plates 32. To ensure smooth, uninterrupted sliding, the strength between the first inner plate 32, the second inner plate 21, and the first inner ring 34 and the second inner ring 23 is enhanced, improving the structure's resistance to deformation. A compression spring 50 is installed between the first inner ring 34 and the second inner ring 23, with its upper end connected to the first inner ring 34 and its lower end connected to the second inner ring 23. Utilizing the feedback between the spring force and fluid pressure, at low flow rates, the spring contracts, causing the first inner plate 32 and the second inner plate 21 to move axially closer together, resulting in dense compression of the pleats of the pleated filter element 10 and good filtration effect. At high flow rates, the fluid pressure overcomes the spring force, pushing the first inner plate 32 and the second inner plate 21 to separate axially, increasing the fluid channel, reducing pressure drop, achieving adaptive adjustment, and buffering pressure fluctuations.

[0026] In a specific configuration, a first outer ring 35 is shared at the center of several first outer plates 33, and a second outer ring 24 is shared at the lower part of several second outer plates 22. Both the first outer ring 35 and the second outer ring 24 are concentrically arranged with the mounting ring 30. The first outer ring 35 is fixedly connected to the side of the first outer plate 33 furthest from the centerline of the mounting ring 30, and the second outer ring 24 is fixedly connected to the side of the second outer plate 22 furthest from the centerline of the mounting ring 30. The first outer ring 35 and the second outer ring 24 integrate the dispersed first outer plates 33 and second outer plates 22, preventing uneven fluid distribution at the edges due to the offset of the first outer plate 33 or the second outer plate 22, enhancing the support of the outer plates for the edges of the folded filter element 10, and improving the overall impact resistance of the filter element. Furthermore, when the sealing plate 20 moves away from the mounting ring 30 to a preset position under high flow conditions, the second outer ring 24 and the first outer ring 35 form a contact limit, preventing the second outer ring 24 from continuing to move, thereby controlling the maximum movement distance of the sealing plate 20 within a safe range. This avoids the risk of structural failure such as wrinkling and tearing of the pleated filter element 10 due to excessive movement of the sealing plate 20 during high flow rates. The inner wall of the first outer ring 35 slides with the surface of several second outer plates 22, and the inner wall of the second outer ring 24 slides with the surface of several first outer plates 33, ensuring smooth sliding without jamming, enhancing the strength between the first outer plate 33, the second outer plate 22 and the first outer ring 35, the second outer ring 24, and improving the structure's resistance to deformation.

[0027] The operating principle of a high-flow-rate pleated security filter element in this embodiment is as follows: During operation, fluid flows in from the inlet pipe 31 of the mounting ring 30 and enters the pleated filter element 10 evenly through the flow holes 40 on the first inner plate 32 and the second inner plate 21. At low flow rates, the compression spring 50 contracts, causing the sealing plate 20 to approach the mounting ring 30, resulting in denser pleats in the pleated filter element 10. At this time, the filtration area is relatively small, but the filtration effect is good. At high flow rates, the fluid pressure inside the pleated filter element 10 increases, overcoming the elasticity of the compression spring 50 and pushing the sealing plate 20 to separate axially from the mounting ring 30. The pleats of the pleated filter element 10 then unfold, expanding the fluid channel, reducing pressure drop, and ensuring filtration efficiency. The filtered fluid passes through the flow holes 40 on the first outer plate 33 and the second outer plate 22.

[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A high-flux pleated security filter element, comprising a pleated filter element (10), characterized in that: The folded filter element (10) is provided with a sealing plate (20) and an installation ring (30) at both ends. An inlet pipe (31) is provided on the side of the installation ring (30) away from the folded filter element (10). Several first inner plates (32) are arranged circumferentially at intervals near the central opening of the installation ring (30), and several first outer plates (33) are arranged circumferentially at intervals away from the central opening. Several second inner plates (21) are arranged circumferentially at intervals near the center of the sealing plate (20), and several second outer plates (22) are arranged circumferentially at intervals away from the center. The two sides of the first inner plate (32) are respectively slidably engaged with the adjacent second inner plate (21) along the axial direction. The two sides of the first outer plate (33) are respectively slidably engaged with the adjacent second outer plate (22) along the axial direction. Several flow holes (40) are opened on the first inner plate (32), the second inner plate (21), the first outer plate (33), and the second outer plate (22).

2. The high-flux pleated security filter element according to claim 1, characterized in that: A first inner ring (34) is provided on the upper part of several first inner plates (32), and a second inner ring (23) is provided on the lower part of several second inner plates (21).

3. The high-throughput pleated security filter element according to claim 2, characterized in that: A compression spring (50) is provided between the first inner ring (34) and the second inner ring (23). The upper end of the compression spring (50) is connected to the first inner ring (34), and the lower end is connected to the second inner ring (23).

4. A high-throughput pleated security filter element according to claim 2, characterized in that: The outer wall of the first inner ring (34) is in sliding engagement with the surfaces of several second inner plates (21), and the outer wall of the second inner ring (23) is in sliding engagement with the surfaces of several first inner plates (32).

5. A high-flux pleated security filter element according to claim 1, characterized in that: A first outer ring (35) is provided in the middle of several first outer plates (33), and a second outer ring (24) is provided in the lower part of several second outer plates (22).

6. A high-throughput pleated security filter element according to claim 5, characterized in that: The inner wall of the first outer ring (35) is in sliding fit with the surface of a plurality of second outer plates (22), and the inner wall of the second outer ring (24) is in sliding fit with the surface of a plurality of first outer plates (33).

7. A high-flux pleated security filter element according to claim 1, characterized in that: A limit ring (36) is provided on the inner wall of the mounting ring (30).

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