High pressure resistant air filter element

Abstract

The utility model relates to a kind of high-pressure-resistant air filter element, including filter core main body, outer skeleton, inner skeleton, bottom support and end cap, the filter core main body is set between outer skeleton and inner skeleton, and the inside of filter core main body and the outer wall of inner skeleton are attached contact, the outside of the filter core main body is provided with multiple fixed rings of shaping distribution along its axial direction, and multiple fixed rings of shaping are all clamped into outer skeleton, so that the filter core main body is fixed its position and form by outer skeleton and inner skeleton. Through the cooperation between outer skeleton and inner skeleton and filter core main body, the cylindrical form of filter core main body can be stably maintained for filtering air, in addition, outer skeleton and inner skeleton can also stably maintain their own form to reduce deformation, so that the overall air filter can withstand higher air pressure for air filtration use, reducing damage between the structures of air filter.

Description

Technical Field

[0001] This utility model relates to the field of air filter technology, specifically a high-pressure resistant air filter. Background Technology

[0002] Pleated filter cartridges can be made from spunbond polyester, PTFE membrane, or other ultra-fine fiber layer filter media through a filter media folding process. Pleated filter cartridges can increase the filtration area, thus they are widely used in air filter cartridges.

[0003] Common pleated filter cartridges, typically arranged in a cylindrical shape, contain a cylindrical mesh with multiple holes inside. Several annular retaining bands are also present on the outside of the cartridge to maintain its cylindrical shape. However, during air filtration, pleated filter cartridges are prone to deformation and even breakage due to the high pressure of the filtered gas, ultimately affecting the filtration efficiency and lifespan of the air filter. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This invention provides a high-pressure resistant air filter element, which solves the problem that existing pleated filter elements are easily deformed or even damaged by the high pressure of the filtered gas, ultimately affecting the filtration effect and service life of the air filter element.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure resistant air filter element, comprising a filter element body, an outer frame, an inner frame, a base, and an end cap. The base and end cap each have two coaxially distributed slots on their opposing sides. The two ends of the outer frame are respectively inserted into the outer slots on the base and end cap, and the two ends of the inner frame are respectively inserted into the inner slots on the base and end cap. The filter element body is disposed between the outer and inner frames, with the inner side of the filter element body in close contact with the outer wall of the inner frame. The outer side of the filter element body is provided with multiple axially distributed shaping and fixing rings, all of which are engaged in the outer frame, thus fixing the position and shape of the filter element body through the outer and inner frames.

[0008] Preferably, the outer frame includes end rings at both ends of the whole, a middle ring in the middle of the whole, and multiple reinforcing ribs. The end rings and the middle ring are connected and fixed by a number of reinforcing ribs that are equally spaced along the radial direction of the end rings. Each reinforcing rib has a number of grooves that mate with the shaping and fixing rings. The depth of the grooves and the height interval between adjacent grooves are adapted to the width of the shaping and fixing rings and the height interval between adjacent shaping and fixing rings, respectively. A number of protrusions are equally spaced along the radial direction on the outer wall of the middle ring.

[0009] In a further preferred embodiment, the inner skeleton comprises a porous cylinder, on the inner wall of which multiple radial and axial protrusions are formed. Adjacent radial or axial protrusions are separated by holes on the surface of the porous cylinder. The multiple radial and axial protrusions are interconnected to form a mesh structure on the inner wall of the porous cylinder. The inner skeleton is symmetrically divided into two modules with its center in the vertical plane. The two modules constituting the inner skeleton are in contact with each other on opposite sides and form a cylindrical shape. The two modules constituting the inner skeleton are welded and fixed together as a single structure.

[0010] (III) Beneficial Effects

[0011] Compared with the prior art, this utility model provides a high-pressure resistant air filter element, which has the following beneficial effects:

[0012] In this invention, the outer and inner frames are coordinated with the filter body to stably maintain the cylindrical shape of the filter body for air filtration. In addition, the outer and inner frames themselves can also stably maintain their own shape to reduce deformation, enabling the air filter to withstand higher air pressure for air filtration and reducing damage between the various structures of the air filter. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of a high-pressure resistant air filter element according to the implementation plan;

[0014] Figure 2 for Figure 1 A schematic diagram of the structure of a medium-pressure resistant air filter element after disassembly;

[0015] Figure 3 This is a structural diagram of the external framework according to the implementation plan;

[0016] Figure 4 This is a structural diagram of the internal framework according to the implementation plan.

[0017] In the diagram: 10. Filter element body; 11. Shaping and fixing ring; 20. Outer skeleton; 21. End ring; 22. Middle ring; 23. Reinforcing rib; 24. Groove; 25. Protrusion; 30. Inner skeleton; 31. Porous cylinder; 32. Radial protrusion; 33. Axial protrusion; 40. Base support; 50. End cap. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 and Figure 2 A high-pressure resistant air filter element includes a filter element body 10, an outer frame 20, an inner frame 30, a base 40, and an end cap 50. The base 40 and the end cap 50 each have two coaxially distributed slots on their opposing sides for assembly with the outer frame 20 and the inner frame 30. During assembly, both ends of the outer frame 20 are inserted into the outer slots on the base 40 and the end cap 50, respectively, while both ends of the inner frame 30 are inserted into the inner slots on the base 40 and the end cap 50, respectively. During assembly, the filter element body 10 is positioned between the outer frame 20 and the inner frame 30, and after assembly, the inner side of the filter element body 10 is in close contact with the outer wall of the inner frame 30. Multiple axially distributed shaping and fixing rings 11 on the outer side of the filter element body 10 can be engaged with the outer frame 20, thereby using the outer frame 20 and the inner frame 30 to fix the filter element body 10 and maintain its cylindrical shape. The bottom of the base 40 is closed, and the top of the end cap 50 has an opening, so that the air to be filtered is introduced into the outside of the filter body 10 and filtered through the filter body 10, and the filtered air can be discharged from the opening at the top of the end cap 50.

[0020] See Figure 3The outer frame 20 includes end rings 21 located at both ends of the whole, a middle ring 22 located in the middle of the whole, and multiple reinforcing ribs 23. The end rings 21 and the middle rings 22 are connected and fixed together by several reinforcing ribs 23 that are radially and equally spaced along the end rings 21. Each reinforcing rib 23 has several grooves 24 that mate with the shaping and fixing rings 11. The depth of the grooves 24 and the height interval between adjacent grooves 24 can be adapted to the width of the shaping and fixing rings 11 and the height interval between adjacent shaping and fixing rings 11, respectively. This allows the multiple shaping and fixing rings 11 provided on the outer side of the filter element body 10 to be inserted into the grooves 24 on the reinforcing ribs 23, and the grooves 24 are used to limit and fix the shaping and fixing rings 11 and the filter element body. A number of protrusions 25 are formed at equal intervals along the radial direction on the outer wall of the central ring 22. The protrusions 25 can enhance the strength of the central ring 22 and reduce its deformation. The grooves 24 spaced apart on the reinforcing ribs 23 can also reduce the bending deformation of the reinforcing ribs 23.

[0021] See Figure 4 The inner skeleton 30 includes a porous cylindrical body 31. Multiple radial protrusions 32 and axial protrusions 33 are formed on the inner wall of the porous cylindrical body 31. Adjacent radial protrusions 32 or adjacent axial protrusions 33 are separated by holes on the surface of the porous cylindrical body 31 to prevent the radial and axial protrusions 32 and 33 from affecting the airflow through the holes in the inner skeleton 30. The multiple radial and axial protrusions 32 and 33 interweave to form a mesh structure on the inner wall of the porous cylindrical body 31, which can enhance the mechanical strength of the porous cylindrical body 31 and reduce its deformation under external forces. The inner skeleton 30 can be divided into two modules symmetrical about its center vertical plane. The two modules constituting the inner skeleton 30 have the same shape and can be manufactured using an integral molding process. The inner skeleton 30 can be integrally formed by welding the two modules together in a cylindrical shape, with them facing each other. By cooperating with the outer frame 20 and inner frame 30 and the filter body 10, the cylindrical shape of the filter body 10 can be stably maintained for filtering air. In addition, the outer frame 20 and inner frame 30 can also stably maintain their own shape to reduce deformation, so that the air filter as a whole can withstand higher air pressure for air filtration and reduce damage between the various structures of the air filter.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure resistant air filter element, comprising a filter element body (10), a base (40), and an end cap (50), characterized in that, It also includes an outer frame (20) and an inner frame (30). The base (40) and the end cap (50) each have two coaxially distributed slots on their opposite sides. The two ends of the outer frame (20) are respectively inserted into the outer slots on the base (40) and the end cap (50). The two ends of the inner frame (30) are respectively inserted into the inner slots on the base (40) and the end cap (50). The filter element body (10) is disposed between the outer frame (20) and the inner frame (30), and the inner side of the filter element body (10) is in close contact with the outer wall of the inner frame (30). The outer side of the filter element body (10) is provided with a plurality of shaping and fixing rings (11) distributed along its axial direction, and the plurality of shaping and fixing rings (11) are all inserted into the outer frame (20), so that the filter element body (10) is fixed in position and shape by the outer frame (20) and the inner frame (30).

2. The high-pressure resistant air filter element according to claim 1, characterized in that: The outer frame (20) includes end rings (21) located at both ends of the whole, a middle ring (22) located in the middle of the whole, and multiple reinforcing ribs (23). The end rings (21) and the middle rings (22) are connected and fixed by several reinforcing ribs (23) that are equally spaced radially along the end rings (21). Each reinforcing rib (23) has several grooves (24) that cooperate with the shaping and fixing rings (11).

3. The high-pressure resistant air filter element according to claim 2, characterized in that: The depth of the groove (24) and the height interval between adjacent grooves (24) are adapted to the width of the shaping and fixing ring (11) and the height interval between adjacent shaping and fixing rings (11), respectively.

4. A high-pressure resistant air filter element according to claim 2 or 3, characterized in that: Several protrusions (25) are formed on the outer wall of the central ring (22) at equal intervals along its radial direction.

5. The high-pressure resistant air filter element according to claim 1, characterized in that: The inner skeleton (30) includes a porous cylinder (31), on the inner wall of which are formed multiple radial protrusions (32) and axial protrusions (33). Adjacent radial protrusions (32) or adjacent axial protrusions (33) are separated by holes on the surface of the porous cylinder (31). The multiple radial protrusions (32) and axial protrusions (33) are interconnected to form a mesh structure on the inner wall of the porous cylinder (31).

6. The high-pressure resistant air filter element according to claim 1, characterized in that: The inner frame (30) is symmetrically divided into two modules on the vertical plane where its center is located. The two modules constituting the inner frame (30) are in contact with each other on opposite sides and form a cylindrical shape. The two modules constituting the inner frame (30) are welded and fixed together as an integral structure.

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