A plate and frame air filter

Abstract

This utility model discloses a plate and frame air filter in the field of filters, comprising a housing with a sealed chamber, and air inlets and outlets communicating with the chamber on both sides of the housing. Several filter components are spaced apart along the airflow direction inside the housing and fixed by slots on the inner wall of the housing. Each filter component consists of two hinged folded panels. Mounting grooves are opened on opposite ends of the panels, in which two mesh sheets and a filter layer are installed. Air holes communicating with the mounting grooves are opened on the other ends of the panels. The housing consists of a top cover and a bottom cover. A longitudinal sliding groove is provided circumferentially on the inner wall of the bottom cover, and a locking hole is opened at the end. A corresponding locking strip is provided on the top cover, the protrusion of which can slide into the sliding groove and cooperate with the locking hole for fixation. This filter, through the sliding locking structure of the top cover and bottom cover, allows for convenient disassembly and assembly of the housing, facilitating the replacement and maintenance of the filter components. The hinged design of the filter components allows for quick replacement of the internal mesh sheets and filter layers, improving the filtration effect, and combining the advantages of compact structure and convenient maintenance.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically a plate and frame air filter. Background Technology

[0002] Air filtration equipment is widely used in modern industrial production and civilian environments, especially plate and frame air filters. Due to their compact structure and stable filtration efficiency, they play a crucial role in air conditioning systems, cleanrooms, and industrial waste gas treatment. As air quality requirements continue to increase, higher standards are being set for the filtration effect, ease of maintenance, and structural stability of air filters.

[0003] Currently, traditional plate and frame air filters face several pressing issues in practical use. Firstly, the assembly and disassembly design of the housing is inadequate, often relying on bolts or snap-fit ​​connections. These methods are prone to bolt loosening and snap-fit ​​wear after prolonged use, leading to decreased housing sealing performance. This not only affects filtration efficiency but also increases maintenance difficulty and cost. Replacing internal filter components is time-consuming due to the cumbersome disassembly process, reducing equipment efficiency. Secondly, the structural design of the filter components also has limitations. Traditional filter components are mostly fixed structures, making filter layer and mesh replacement inconvenient. Once the filter layer fails, the entire filter component often needs to be replaced, increasing operating costs. Furthermore, the fixed structure is ill-suited to different filtration scenarios, failing to flexibly adjust the filter layer material and thickness according to actual filtration requirements. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a plate and frame air filter, which can effectively solve the technical problem that current air filters are inconvenient to maintain.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A plate and frame air filter includes a housing with a sealed chamber. An air inlet and an exhaust port communicating with the chamber are respectively opened on both sides of the housing. A plurality of filter components are provided inside the housing and spaced apart along the direction from the air inlet to the exhaust port. The filter components are fixed by a slot on the inner wall of the housing.

[0007] The filter assembly consists of two panels, two mesh sheets, and a filter layer. The two panels are hinged to achieve folding, and mounting grooves are provided on the opposite end faces of the two panels. The mesh sheets and the filter layer are installed together in the mounting grooves, and the filter layer is located between the two mesh sheets.

[0008] Both panels have air holes on their opposite ends that communicate with the corresponding mounting slots.

[0009] The housing consists of an upper cover and a lower cover. The inner wall of the lower cover is provided with several longitudinally arranged sliding grooves. The end of each sliding groove is provided with a locking hole that communicates with the outside of the lower cover. The upper cover is provided with a locking strip that slides in the sliding groove at a corresponding position. One end of the locking strip is provided with a protrusion that cooperates with the locking hole to achieve fixation.

[0010] Furthermore, the slot body includes an upper slot provided on the inner wall of the upper cover and a lower slot provided on the inner wall of the bottom shell, and the positions and number of the upper slot and the lower slot are corresponding.

[0011] Furthermore, one end of the two panels is hinged together by a hinge, with both ends of the hinge being embedded and installed on one side of the corresponding panel.

[0012] Furthermore, one of the panels has an annular groove distributed around the mounting groove, and a sealing strip is provided in the annular groove to achieve a sealing contact with the other panel.

[0013] Furthermore, adjacent filter layers are made of different filter materials.

[0014] Furthermore, the mesh is a stainless steel perforated mesh or a metal woven mesh.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The plate and frame air filter provided by this utility model has an upper cover and a bottom shell connected by a structure that slides and locks together, so that the shell can be easily assembled and disassembled, which helps to replace and maintain the filter components inside the shell; the filter components have a hinged structure, which helps to quickly replace the mesh and filter layer clamped inside, and facilitates overall maintenance to improve the filtration effect. 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 This is a schematic diagram of the bottom shell connecting to the filter assembly in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the bottom shell in an embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the filter assembly structure according to an embodiment of the present invention;

[0021] Figure 5 This is an exploded view of the internal structure of the filter assembly in an embodiment of this utility model;

[0022] Figure 6 This is a schematic diagram of the upper cover structure of an embodiment of the present utility model;

[0023] Numbering on the map:

[0024] 1-Housing housing, 2-Filter assembly;

[0025] 11-Top cover, 12-Bottom shell;

[0026] 21-Panel, 22-Mesh, 23-Filter layer, 24-Hinge, 25-Sealing strip;

[0027] 111-Card strip, 112-Protrusion, 113-Upper card slot;

[0028] 121-Air inlet, 122-Exhaust outlet, 123-Slide groove, 124-Locking hole, 125-Lower slot;

[0029] 211-Mounting groove, 212-Air hole, 213-Annular groove. Detailed Implementation

[0030] 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.

[0031] like Figure 1-6 As shown, this utility model provides a plate and frame air filter, the core of which lies in the design of the housing 1 and the installation method of the filter assembly 2. The housing 1 is composed of an upper cover 11 and a bottom shell 12, and forms a sealed chamber inside. This split structure facilitates installation and maintenance.

[0032] The inner wall of the bottom shell 12 is provided with several longitudinally arranged sliding grooves 123. The end of each sliding groove 123 is provided with a locking hole 124 that communicates with the outside of the bottom shell 12. The top cover 11 is provided with a retaining strip 111 that slides within the sliding groove 123. One end of the retaining strip 111 is provided with a protrusion 112. When the retaining strip 111 slides along the sliding groove 123 to the end, the protrusion 112 engages with the locking hole 124 to achieve a fixed connection between the top cover 11 and the bottom shell 12. This connection method is simple in structure and easy to disassemble.

[0033] The housing contains several filter components 2 spaced apart along the direction from the air inlet 121 to the exhaust outlet 122. The filter components 2 are fixed by slots on the inner wall of the housing 1. The slots include an upper slot 113 on the inner wall of the upper cover 11 and a lower slot 125 on the inner wall of the bottom shell 12. The positions and number of the upper slot 113 and the lower slot 125 correspond to each other. The upper and lower ends of the filter components 2 are respectively embedded in the upper slot 113 and the lower slot 125, thereby achieving stable installation.

[0034] The filter assembly 2 consists of two panels 21, two mesh sheets 22, and a filter layer 23. One end of the two panels 21 is hinged by a hinge 24, and the two ends of the hinge 24 are respectively embedded and installed on one side of the corresponding panel 21, so that the two panels 21 can be folded. This design facilitates the installation and replacement of the mesh sheets 22 and the filter layer 23 in the filter assembly 2.

[0035] Mounting grooves 211 are provided on the opposite end faces of the two panels 21. The mesh 22 and filter layer 23 are installed together within the mounting grooves 211, with the filter layer 23 positioned between the two mesh pieces 22. The mesh 22 serves to support and protect the filter layer 23. In this embodiment, the mesh 22 is a stainless steel perforated mesh; however, other materials such as metal woven mesh can also be used depending on actual needs. Air holes 212, communicating with the corresponding mounting grooves 211, are provided on the opposite end faces of the two panels 21. Air enters the mounting grooves 211 through the air holes 212, is filtered by the filter layer 23, and then exits through the air holes 212 on the other side.

[0036] To improve the sealing performance of the filter assembly 2, one panel 21 has an annular groove 213 distributed around the mounting groove 211. A sealing strip 25 is provided in the annular groove 213. When the two panels 21 are folded and closed, the sealing strip 25 makes a sealing contact with the other panel 21 to prevent unfiltered air from leaking from the gap between the panels 21.

[0037] The two adjacent filter layers 23 are made of different filter materials. This arrangement can achieve multi-stage filtration and improve the filtration effect. For example, the filter layer 23 near the air inlet 121 can use a material with lower filtration precision but higher dust holding capacity to filter larger particulate impurities; while the filter layer 23 near the exhaust port 122 can use a material with higher filtration precision to filter smaller particles and harmful gases.

[0038] In use, when air enters the chamber of the housing 1 through the air inlet 121, it passes through each filter assembly 2 in sequence. The air first enters the mounting slot 211 through the air holes 212 on the panel 21, and is filtered by the filter layer 23 between the two mesh panels 22, removing impurities, dust, harmful gases, etc. Then it is discharged through the air holes 212 on the other panel 21, and finally flows out from the exhaust port 122, thus obtaining purified air. Furthermore, since the filter assembly 2 can be hinged and folded, when the filter layer 23 needs to be replaced, simply open the top cover 11, remove the filter assembly 2 from the slot, and then fold the panel 21 to easily replace the filter layer 23 and mesh panels 22, making maintenance very convenient.

[0039] Compared with traditional technologies, the plate and frame air filter provided by this technical solution has an upper cover 1 and a bottom shell 2 connected by a structure that slides and locks together, so that the shell 1 can be easily assembled and disassembled, which helps to replace and maintain the filter components 2 inside the shell 1; the filter components 2 have a hinged structure, which helps to quickly replace the mesh 22 and filter layer 23 clamped inside, which facilitates overall maintenance and improves the filtration effect.

[0040] 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 plate and frame air filter, comprising a housing with a sealed chamber, wherein an air inlet and an exhaust port communicating with the chamber are respectively opened on both sides of the housing, characterized in that: The housing is provided with a plurality of filter components spaced apart along the direction from the air inlet to the air outlet, and the filter components are fixed by a slot on the inner wall of the housing. The filter assembly consists of two panels, two mesh sheets, and a filter layer. The two panels are hinged to achieve folding, and mounting grooves are provided on the opposite end faces of the two panels. The mesh sheets and the filter layer are installed together in the mounting grooves, and the filter layer is located between the two mesh sheets. Both panels have air holes on their opposite ends that communicate with the corresponding mounting slots. The housing consists of an upper cover and a lower cover. The inner wall of the lower cover is provided with several longitudinally arranged sliding grooves. The end of each sliding groove is provided with a locking hole that communicates with the outside of the lower cover. The upper cover is provided with a locking strip that slides in the sliding groove at a corresponding position. One end of the locking strip is provided with a protrusion that cooperates with the locking hole to achieve fixation.

2. A plate and frame air filter according to claim 1, characterized in that: The slot body includes an upper slot on the inner wall of the upper cover and a lower slot on the inner wall of the bottom shell, and the positions and number of the upper and lower slots are corresponding.

3. A plate and frame air filter according to claim 1, characterized in that: The two panels are hinged at one end by a hinge, with the two ends of the hinge respectively embedded and installed on one side of the corresponding panel.

4. A plate and frame air filter according to claim 3, characterized in that: One of the panels has an annular groove distributed around the mounting groove, and a sealing strip is provided in the annular groove to achieve a sealing contact with the other panel.

5. A plate and frame air filter according to any one of claims 1-4, characterized in that: The two adjacent filter layers are made of different filter materials.

6. A plate and frame air filter according to any one of claims 1-4, characterized in that: The mesh is made of stainless steel perforated mesh or metal woven mesh.

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