Powder filter element with multi-layer structure

Abstract

The utility model discloses a powder filter element with a multilayer structure, which belongs to the field of filter elements and mainly comprises two end covers and a filter body positioned between the two end covers, the filter body adopts a double-layer design, the inner layer is a polyester fiber filter layer, the outer layer is a metal net filter layer, and the inner layer and the outer layer act synergistically, so that the dust filtering capacity is remarkably enhanced. Protruding parts are arranged on the inner side of the end cover and provided with an inner annular groove and an outer annular groove respectively so that the polyester fiber filtering layer and the metal net filtering layer can be accurately positioned and inserted in a sealed mode, and filtering efficiency and sealing performance are guaranteed. Besides, the end covers are fixed through a plurality of connecting rods, positioning slots are formed in the peripheries of the connecting rods, and detachable connection is realized through locking pieces, so that not only is the stability of the filter element structure ensured, but also later disassembly and maintenance are facilitated. The mounting chucks are further arranged at the two ends of the filter element, the unique design of the mounting chucks facilitates quick mounting and positioning of the filter element on the filtering equipment, and the limiting parts further enhance the mounting stability. The powder filter element disclosed by the utility model is compact in structure, efficient in filtering and convenient and fast to maintain.

Description

Technical Field

[0001] This utility model relates to the field of filter element technology, specifically to a multi-layer powder filter element. Background Technology

[0002] In current industrial production and air purification fields, powder filter cartridges, as key filtration components, directly affect filtration efficiency, equipment operational stability, and ease of maintenance. However, existing powder filter cartridge technology suffers from the following problems:

[0003] First, traditional powder filter cartridges have a simple filtration structure, often relying on only a single layer of filter material to intercept dust. This results in limited filtration efficiency, making it difficult to effectively remove fine dust particles from the air, thus affecting the quality of the filtered air and increasing the difficulty and cost of subsequent treatment.

[0004] Secondly, the existing filter element structure is not robust enough. The connection between the end cap and the filter body is often not tight enough, making it prone to loosening or deformation under high pressure or long-term operation, which in turn affects the overall performance and lifespan of the filter element. This structural instability not only reduces the reliability of the filter element but may also damage the filtration equipment.

[0005] Finally, the installation and maintenance process of existing filter elements is cumbersome and lacks convenient design. Filter element installation typically requires complex tools and steps, while disassembly and replacement are time-consuming and labor-intensive, significantly reducing equipment maintenance efficiency and increasing downtime and maintenance costs. Utility Model Content

[0006] In order to overcome the shortcomings of existing technical solutions, this utility model provides a multi-layer powder filter element, which can effectively solve the technical problems of poor filtration effect, unstable structure and inconvenient installation and maintenance of current powder filter elements.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A multi-layer powder filter element includes two end caps and a filter body. The filter body is disposed between the two end caps and clamped and fixed. The filter body includes a polyester fiber filter layer and a metal mesh filter layer. The polyester fiber filter layer is disposed inside the metal mesh filter layer.

[0009] Both of the two end caps have protrusions on their opposite sides. The protrusions are provided with an inner annular groove for positioning the insertion of the polyester fiber filter layer and an outer annular groove for positioning the insertion of the metal mesh filter layer. Both the inner and outer annular grooves are provided with sealing strips that seal with the corresponding filter layers.

[0010] Several connecting rods are also inserted on the opposite side of the two end caps. The connecting rods are distributed around the metal mesh filter layer and fixed by the positioning slots preset on the end caps. Several locking holes that communicate with the corresponding positioning slots are opened on the opposite side of the two end caps. Locking parts that lock with the connecting rods can be detachably installed in the locking holes.

[0011] The outer sides of the two end caps are provided with mounting clips for rotational installation. The mounting clips are composed of an extension and a fixing part. One end of the fixing part is connected to the outer side of the end cap through the extension. The other end of the fixing part extends in the same direction and forms the same arc as the end cap. The inner side of the fixing part is provided with a protruding limiting part.

[0012] Furthermore, the polyester fiber filter layer and the metal mesh filter layer are coaxially arranged and spaced apart.

[0013] Furthermore, the polyester fiber filter layer has inner snap-fit ​​parts that are inserted into the corresponding inner annular grooves for fixing at both ends, and the shape of the inner snap-fit ​​parts matches the shape of the inner annular grooves; the metal mesh filter layer has outer snap-fit ​​parts that are inserted into the corresponding outer annular grooves for fixing at both ends, and the shape of the outer snap-fit ​​parts matches the shape of the outer annular grooves.

[0014] Furthermore, threaded grooves are provided at both ends of the connecting rod along the axial direction, and one end of the locking member passes through the locking hole and locks with the threaded groove.

[0015] Furthermore, one of the end caps has a central hole in the middle that communicates with the interior of the polyester fiber filter layer.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The powder filter element provided by this utility model adopts a two-layer filter structure of polyester fiber filter layer and metal mesh filter layer for filtration, which improves the filtration effect and can effectively remove dust from the air. The two end caps are firmly connected together by the cooperation of connecting rod and locking part, forming an integral structure with the filter body, which improves the overall stability and reliability. The design of the mounting clip makes it easy to install the filter element on the filtration equipment, while the detachable design of the locking part makes the removal and replacement of the filter element more convenient and quick, improving the maintenance efficiency of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is an exploded view of the overall structure assembly of an embodiment of this utility model;

[0020] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged schematic diagram of section A in the middle;

[0021] Figure 4 This is an exploded view of the assembly of the end cap and sealing strip according to an embodiment of the present invention;

[0022] Numbering on the map:

[0023] 1-End cap, 2-Filter body, 3-Sealing strip, 4-Connecting rod, 5-Locking component, 6-Mounting clip;

[0024] 101-Protrusion, 102-Inner annular groove, 103-Outer annular groove, 104-Positioning slot, 105-Locking hole, 106-Center hole;

[0025] 201-Polyester fiber filter layer, 202-Metal mesh filter layer, 203-Inner snap-fit ​​part, 204-Outer snap-fit ​​part;

[0026] 401 - Threaded groove;

[0027] 601-Extension part, 602-Fixing part, 603-Limiting part. Detailed Implementation

[0028] 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.

[0029] like Figure 1-4 As shown, this utility model provides a multi-layer powder filter element, which mainly includes two end caps 1 and a filter body 2. The filter body 2 is disposed between the two end caps 1 and is clamped and fixed by the two end caps 1.

[0030] The filter body 2 includes a polyester fiber filter layer 201 and a metal mesh filter layer 202. The polyester fiber filter layer 201 is disposed inside the metal mesh filter layer 202, and the polyester fiber filter layer 201 and the metal mesh filter layer 202 are coaxially arranged and spaced apart. This two-layer filter structure can fully utilize the filtration characteristics of the polyester fiber and the metal mesh, improving the filtration effect. During filtration, dusty gas enters from the outside of the filter body 2 and exits from the inside for filtration. The metal mesh filter layer 202 can perform preliminary filtration of dust, removing larger dust particles; the polyester fiber filter layer 201 can further filter finer dust particles, improving the filtration accuracy.

[0031] The polyester fiber filter layer 201 has inner snap-fit ​​portions 203 at both ends, which are inserted into the corresponding inner annular grooves 102 for fixation. The shape of the inner snap-fit ​​portions 203 matches the shape of the inner annular grooves 102. The metal mesh filter layer 202 has outer snap-fit ​​portions 204 at both ends, which are inserted into the corresponding outer annular grooves 103 for fixation. The shape of the outer snap-fit ​​portions 204 matches the shape of the outer annular grooves 103. This snap-fit ​​structure can firmly fix the polyester fiber filter layer 201 and the metal mesh filter layer 202 to the end cap 1, preventing displacement or loosening during use.

[0032] To better connect the polyester fiber filter layer 201 and the metal mesh filter layer 202, each of the two end caps 1 has a protrusion 101 on its opposite side. The protrusion 101 has an inner annular groove 102 for positioning the insertion of the polyester fiber filter layer 201 and an outer annular groove 103 for positioning the insertion of the metal mesh filter layer 202. Both the inner and outer annular grooves 102 and 103 are equipped with sealing strips 3 that seal with the corresponding filter layers. The sealing strips 3 can be made of elastic materials such as rubber, effectively preventing dust leakage from the gap between the filter layer and the end cap 1, thus improving the sealing performance of the filter element.

[0033] Several connecting rods 4 are inserted into the opposite side of the two end caps 1. The connecting rods 4 are distributed around the periphery of the metal mesh filter layer 202 and are fixed by the positioning slots 104 preset in the end caps 1. Threaded grooves 401 are formed at both ends of the connecting rods 4 along the axial direction. Several locking holes 105 are formed on the opposite side of the two end caps 1, which communicate with the corresponding positioning slots 104. Locking elements 5 that lock with the connecting rods 4 are detachably installed in the locking holes 105. One end of the locking element 5 passes through the locking hole 105 and locks with the threaded groove 401. Through the cooperation of the connecting rods 4 and the locking elements 5, the two end caps 1 can be firmly connected together to form an integral structure, improving the stability and reliability of the filter element. When it is necessary to disassemble the filter element, simply remove the locking elements 5 from the locking holes 105 to separate the two end caps 1, facilitating the replacement or maintenance of the filter body 2.

[0034] The outer sides of the two end caps 1 are provided with mounting clips 6 for rotational installation. The mounting clips 6 consist of an extension 601 and a fixing part 602. One end of the fixing part 602 is connected to the outer side of the end cap 1 through the extension 601, and the other end of the fixing part 602 extends in the same direction and forms the same arc as the end cap 1. A protruding limiting part 603 is provided on the inner side of the fixing part 602. The design of the mounting clips 6 allows the filter element to be easily installed on the filtration equipment. By rotating the filter element, it can be quickly fixed in the equipment, while the limiting part 603 can prevent the filter element from rotating or loosening during use.

[0035] One of the end caps 1 has a central hole 106 in the middle that communicates with the interior of the polyester fiber filter layer 201. The central hole 106 can serve as an outlet for filtered air or as a positioning hole for connecting the filter element opening to other components, facilitating the installation and removal of the filter element.

[0036] When using this powder filter element, it is installed in the filtration equipment using the mounting clip 6. When dust-laden air enters the filter element, it first undergoes preliminary filtration through the metal mesh filter layer 202 to remove larger dust particles; then it undergoes further filtration through the polyester fiber filter layer 201 to remove finer dust particles. The filtered air is discharged from the filter element through the central hole 106. When the filter element needs to be replaced or maintained after a period of use, simply remove the locking piece 5 from the locking hole 105, separate the two end caps 1, remove the old filter element 2, install the new filter element 2, and then fix the two end caps 1 together with the locking piece 5 using the connecting rod 4 to complete the replacement or maintenance of the filter element.

[0037] Compared with traditional technologies, the powder filter element provided by this technical solution adopts a two-layer filtration structure of a polyester fiber filter layer 201 and a metal mesh filter layer 202 for filtration, which improves the filtration effect and can effectively remove dust from the air. The two end caps 1 are firmly connected together by the cooperation of the connecting rod 4 and the locking part 5, forming an integral structure with the filter element 2, which improves the overall stability and reliability. The design of the mounting clip 6 makes it easy to install the filter element on the filtration equipment, while the detachable design of the locking part 5 makes the removal and replacement of the filter element more convenient and quick, improving the maintenance efficiency of the equipment.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-layer powder filter element, comprising two end caps and a filter body, wherein the filter body is disposed between the two end caps and clamped and fixed, characterized in that: The filter body includes a polyester fiber filter layer and a metal mesh filter layer, wherein the polyester fiber filter layer is disposed inside the metal mesh filter layer; Both of the two end caps have protrusions on their opposite sides. The protrusions are provided with an inner annular groove for positioning the insertion of the polyester fiber filter layer and an outer annular groove for positioning the insertion of the metal mesh filter layer. Both the inner and outer annular grooves are provided with sealing strips that seal with the corresponding filter layers. Several connecting rods are also inserted on the opposite side of the two end caps. The connecting rods are distributed around the metal mesh filter layer and fixed by the positioning slots preset on the end caps. Several locking holes that communicate with the corresponding positioning slots are opened on the opposite side of the two end caps. Locking parts that lock with the connecting rods can be detachably installed in the locking holes. The outer sides of the two end caps are provided with mounting clips for rotational installation. The mounting clips are composed of an extension and a fixing part. One end of the fixing part is connected to the outer side of the end cap through the extension. The other end of the fixing part extends in the same direction and forms the same arc as the end cap. The inner side of the fixing part is provided with a protruding limiting part.

2. The multi-layer powder filter element according to claim 1, characterized in that: The polyester fiber filter layer and the metal mesh filter layer are coaxially arranged and spaced apart.

3. The multi-layer powder filter element according to claim 1, characterized in that: The polyester fiber filter layer has internal snap-fit ​​parts at both ends of the circumferential direction that are inserted into the corresponding inner annular groove for fixing, and the shape of the internal snap-fit ​​parts matches the inner annular groove. The metal mesh filter layer has external snap-fit ​​parts at both ends of its circumference that are inserted into the corresponding outer annular grooves for fixation, and the shape of the external snap-fit ​​parts matches that of the outer annular grooves.

4. The multi-layer powder filter element according to claim 1, characterized in that: The connecting rod has threaded grooves at both ends along the axial direction, and one end of the locking member passes through the locking hole and locks with the threaded groove.

5. A multi-layer powder filter element according to claim 1, characterized in that: One of the end caps has a central hole in the middle that communicates with the interior of the polyester fiber filter layer.

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