Flat-groove snap-fit ​​plate air filter

The flat-groove snap-fit ​​structure and combined snap-fit ​​components solve the problem of inconvenient installation of plate air filters, enabling quick fixing and disassembly, and improving installation efficiency and sealing performance.

CN224422264UActive Publication Date: 2026-06-30ZHENGZHOU KEJING ENVIRONMENTAL ENG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHENGZHOU KEJING ENVIRONMENTAL ENG CO LTD
Filing Date
2025-07-21
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing plate air filters require tightening multiple bolts during installation and removal, which is inconvenient, especially in confined spaces, and affects installation efficiency.

Method used

The filter body adopts a flat-groove snap-fit ​​structure, which uses a combination of slider, insert rod, spring and push plate to achieve quick fixing and disassembly. Combined with U-shaped plate and connecting components, it improves sealing and stability.

Benefits of technology

It simplifies the installation and disassembly process of the filter, improves the convenience of operation and the scope of application, and enhances the sealing and connection stability between the U-shaped plate and the filter body.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a plate air filter with a flat groove snap-fit ​​positioning system, specifically relating to the field of plate air filter technology. It includes a filter body and two pressure plates, with the bottom ends of both pressure plates fixedly connected to the filter body. A U-shaped plate is movably arranged on the outer side of the filter body, and a fixing plate is fixedly connected to one side of the U-shaped plate. A connecting frame is movably arranged on the outer side of one of the pressure plates, with the bottom end of the connecting frame fixedly connected to the U-shaped plate. A snap-fit ​​component is provided on the connecting frame. This utility model uses two push plates that move in opposite directions, causing two sliders to slide on slide rods. The sliders compress two springs, inserting the filter body into the U-shaped plate. Releasing the two push plates causes the two springs to rebound, moving the two sliders and two insert rods towards each other, thus fixing one side of the filter body. The flat groove snap-fit ​​structure is simple to operate and facilitates the installation and disassembly of the filter body.
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Description

Technical Field

[0001] This utility model relates to the field of plate air filter technology, and more specifically, to a plate air filter with flat groove snap-fit ​​positioning. Background Technology

[0002] Panel air filters are a common type of filtration device in air filtration systems. They are typically panel-shaped and mainly consist of filter materials (such as non-woven fabric, fiberglass, activated carbon, etc.), frames (made of metal, plastic, or wood, etc.), and necessary fixing components. Their core function is to purify the air by intercepting and adsorbing suspended particulate matter, dust, and impurities in the air through the filter materials. They are widely used in air conditioning and ventilation systems, industrial production environments, laboratories, hospitals, and other places that require air quality control.

[0003] A search revealed that Chinese patent CN222677528U discloses a plate-type air filter, including a frame, a mesh frame fixedly installed at the bottom inside the frame, and a lower mesh frame fixedly installed at the bottom inside the frame. Several equally spaced winding frames are fixedly connected to the opposite sides of the mesh frame and the lower mesh frame. A three-dimensional mesh is provided inside the frame. The soft three-dimensional mesh is fixed by the mesh frame and the lower mesh frame. The three-dimensional mesh has a continuous W-shaped structure. Compared with the traditional method of covering the surface of the three-dimensional mesh with a galvanized mesh, it has lower resistance and reduces the structural resistance of the product.

[0004] When using the above-mentioned plate air filter, it is installed and fixed by the mounting frame in conjunction with the positioning structure of the air purifier. However, when installing the filter body, multiple bolts need to be tightened in sequence. At the same time, when the installation space is small, the operation of tools is inconvenient, which further prolongs the installation time and makes it inconvenient to install and disassemble the filter body. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a plate air filter with flat groove snap-fit ​​positioning, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plate-type air filter with a flat groove snap-fit ​​positioning, comprising a filter body and two pressure plates, wherein the bottom ends of the two pressure plates are fixedly connected to the filter body, a U-shaped plate is movably arranged on the outer side of the filter body, a fixing plate is fixedly connected to one side of the U-shaped plate, a connecting frame is movably arranged on the outer side of one of the pressure plates, and the bottom end of the connecting frame is fixedly connected to the U-shaped plate, a snap-fit ​​assembly is provided on the connecting frame, the snap-fit ​​assembly includes a slide rod, two sliders, two insert rods, two springs, a limiting ring and two push plates, both ends of the slide rod are fixedly connected to the connecting frame, both sliders are movably sleeved on the slide rod, one end of each of the two insert rods extends into the interior of one of the pressure plates, and the opposite ends of the two insert rods are respectively fixedly connected to the two sliders.

[0007] Furthermore, the front and rear ends of the two springs are respectively fixedly connected to the two sliders and the limiting ring, and both springs are movably sleeved on the slide rod, while the limiting ring is fixedly sleeved on the slide rod.

[0008] Furthermore, the two push plates are fixedly connected to the two sliders on opposite sides, and the tops of the two push plates penetrate the connecting frame.

[0009] As can be seen, the above technical solution facilitates the horizontal movement of the slider.

[0010] Furthermore, two locking blocks are fixedly connected to one side of the connecting frame, and the outer sides of both locking blocks extend into one of the pressure plates.

[0011] As can be seen, in the above technical solution, both card blocks are inserted into the pressure plate, which can improve the stability between the connecting frame and the pressure plate.

[0012] Furthermore, a first gasket is fixedly bonded to the inside of the U-shaped plate, and the inner side of the first gasket is in contact with the filter body.

[0013] It can be seen that the above technical solution aims to improve the sealing between the U-shaped plate and the filter body.

[0014] Furthermore, the U-shaped plate is provided with a connecting assembly, which includes a connecting plate, a locking bolt, a limiting plate, and a second washer, and the number of connecting assemblies is two.

[0015] Furthermore, one end of the limiting plate passes through the connecting plate and the U-shaped plate, and the limiting plate, the connecting plate, and the U-shaped plate are fixed together by locking bolts. The front side of the second gasket is fixedly connected to the connecting plate, and the rear side of the second gasket is in contact with the filter body.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. This utility model uses two push plates that move in opposite directions to drive two sliders to slide on the slide rod. The sliders drive two springs to compress, and then the filter body is inserted into the U-shaped plate. When the two push plates are released, the two springs rebound and drive the two sliders and two insert rods to move towards each other, so that the two insert rods move into the interior of the pressure plate. This allows one side of the filter body to be fixed, and the other side of the filter body to be fixed in the same way. The flat groove snap-on structure is simple to operate and convenient for installing and disassembling the filter body.

[0018] 2. This utility model improves the sealing between the U-shaped plate and the filter body by using the first gasket. When different lengths of filter bodies need to be installed, the corresponding length of the connecting plate is selected according to the requirements. The connecting plate is placed between the two U-shaped plates, and then the limiting plate is inserted into the connecting plate and the U-shaped plate. The limiting plate can improve the stability between the connecting plate and the U-shaped plate. Finally, the connecting plate is fixed to the U-shaped plate by the locking bolt. The other connecting plate is installed in the same way. The structure is simple and has a wide range of applications. Attached Figure Description

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the U-shaped plate and the connecting frame of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection component structure of this utility model;

[0023] Figure 4 This is a cross-sectional view of the connecting frame and a schematic diagram of the snap-fit ​​assembly structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the snap-fit ​​assembly structure of this utility model.

[0025] In the diagram: 1. Filter body; 2. U-shaped plate; 3. Fixing plate; 4. Pressure plate; 5. Connecting frame; 6. Snap-fit ​​assembly; 7. First gasket; 8. Connecting assembly; 9. Locking block; 601. Slide rod; 602. Slider; 603. Insert rod; 604. Spring; 605. Limiting ring; 606. Push plate; 801. Connecting plate; 802. Locking bolt; 803. Limiting plate; 804. Second gasket. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Refer to the instruction manual appendix Figure 1-5 The flat-groove snap-fit ​​plate air filter of this embodiment includes a filter body 1 and two pressure plates 4. The bottom ends of the two pressure plates 4 are fixedly connected to the filter body 1. A U-shaped plate 2 is movably arranged on the outer side of the filter body 1. A fixing plate 3 is fixedly connected to one side of the U-shaped plate 2. A connecting frame 5 is movably arranged on the outer side of one of the pressure plates 4. The bottom end of the connecting frame 5 is fixedly connected to the U-shaped plate 2. A snap-fit ​​assembly 6 is provided on the connecting frame 5. The snap-fit ​​assembly 6 includes a slide rod 601, two sliders 602, two insert rods 603, two springs 604, a limiting ring 605, and two push plates 606. The front and rear ends of the slide rod 601 are fixedly connected to the connecting frame 5. The two sliders 602 are movably sleeved on the slide rod 601. The opposite ends of the two insert rods 603 extend into the interior of one of the pressure plates 4. The opposite ends of the two insert rods 603 are fixedly connected to the two sliders 602 respectively.

[0028] Furthermore, the front and rear ends of the two springs 604 are fixedly connected to the two sliders 602 and the limiting ring 605 respectively, and the two springs 604 are movably sleeved on the slide rod 601, the limiting ring 605 is fixedly sleeved on the slide rod 601, the opposite sides of the two push plates 606 are fixedly connected to the two sliders 602 respectively, and the top of the two push plates 606 penetrates the connecting frame 5. Two locking blocks 9 are fixedly connected to one side of the connecting frame 5, and the outer sides of the two locking blocks 9 extend into one of the pressure plates 4.

[0029] Furthermore, a first gasket 7 is fixedly bonded to the inside of the U-shaped plate 2, and the inner side of the first gasket 7 is in contact with the filter body 1. A connecting assembly 8 is provided on the U-shaped plate 2. The connecting assembly 8 includes a connecting plate 801, a locking bolt 802, a limiting plate 803, and a second gasket 804. There are two connecting assemblies 8. One end of the limiting plate 803 passes through the connecting plate 801 and the U-shaped plate 2, and the limiting plate 803, the connecting plate 801, and the U-shaped plate 2 are fixed together by the locking bolt 802. The front side of the second gasket 804 is fixedly connected to the connecting plate 801, and the rear side of the second gasket 804 is in contact with the filter body 1.

[0030] The first gasket 7 improves the sealing between the U-shaped plate 2 and the filter body 1. When different lengths of filter bodies 1 need to be installed, the corresponding length of the connecting plate 801 is selected according to the requirements. The connecting plate 801 is placed between the two U-shaped plates 2, and then the limiting plate 803 is inserted into the connecting plate 801 and the U-shaped plate 2. The limiting plate 803 improves the stability between the connecting plate 801 and the U-shaped plate 2. Finally, the connecting plate 801 is fixed to the U-shaped plate 2 by the locking bolt 802. The other connecting plate 801 is installed in the same way. The structure is simple and has a wide range of applications. At the same time, the second gasket 804 improves the sealing between the connecting plate 801 and the filter body 1.

[0031] The usage method of this embodiment is as follows:

[0032] In use, the fixing plate 3 is installed inside the air purifier using fixing bolts, thus fixing the U-shaped plate 2 to the air purifier. Then, the two push plates 606 are moved in opposite directions, causing the two sliders 602 to slide on the slide rod 601, which in turn causes the two insert rods 603 to move into the interior of the connecting frame 5. At the same time, the sliders 602 drive the two springs 604 to compress, and then the filter body 1 is inserted into the U-shaped plate 2, with the pressure plate 4 in contact with the U-shaped plate 2, thus limiting the position of the filter body 1. At the same time, the two locking blocks 9 are inserted into the pressure plate 4, which can improve the stability between the connecting frame 5 and the pressure plate 4. When the two push plates 606 are released, the two springs 604 rebound, causing the two sliders 602 and the two insert rods 603 to move towards each other, and causing the two insert rods 603 to move into the interior of the pressure plate 4, thus fixing one side of the filter body 1. Similarly, the other side of the filter body 1 is fixed. The flat groove snap-fit ​​structure is simple to operate and convenient for installing and disassembling the filter body 1.

[0033] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plate-type air filter with a flat groove snap-fit ​​positioning, comprising a filter body (1) and two pressure plates (4), wherein the bottom ends of the two pressure plates (4) are fixedly connected to the filter body (1), characterized in that: A U-shaped plate (2) is movably provided on the outer side of the filter body (1). A fixing plate (3) is fixedly connected to one side of the U-shaped plate (2). A connecting frame (5) is movably provided on the outer side of one of the pressure plates (4). The bottom end of the connecting frame (5) is fixedly connected to the U-shaped plate (2). A snap-fit ​​assembly (6) is provided on the connecting frame (5). The snap-fit ​​assembly (6) includes a slide rod (601), two sliders (602), two insert rods (603), two springs (604), a limiting ring (605), and two push plates (606). The front and rear ends of the slide rod (601) are fixedly connected to the connecting frame (5). The two sliders (602) are movably sleeved on the slide rod (601). The opposite ends of the two insert rods (603) extend into the interior of one of the pressure plates (4). The opposite ends of the two insert rods (603) are fixedly connected to the two sliders (602) respectively.

2. The plate air filter with flat groove snap-fit ​​positioning according to claim 1, characterized in that: The front and rear ends of the two springs (604) are fixedly connected to the two sliders (602) and the limiting ring (605) respectively, and the two springs (604) are movably sleeved on the slide rod (601), and the limiting ring (605) is fixedly sleeved on the slide rod (601).

3. The plate air filter with flat groove snap-fit ​​positioning according to claim 1, characterized in that: The two push plates (606) are fixedly connected to the two sliders (602) on opposite sides, and the top of the two push plates (606) passes through the connecting frame (5).

4. The plate air filter with flat groove snap-fit ​​positioning according to claim 1, characterized in that: Two locking blocks (9) are fixedly connected to one side of the connecting frame (5), and the outer sides of the two locking blocks (9) extend into one of the pressure plates (4).

5. The plate air filter with flat groove snap-fit ​​positioning according to claim 1, characterized in that: The U-shaped plate (2) has a first gasket (7) fixedly bonded inside, and the inner side of the first gasket (7) is in contact with the filter body (1).

6. The plate air filter with flat groove snap-fit ​​positioning according to claim 1, characterized in that: The U-shaped plate (2) is provided with a connecting component (8), which includes a connecting plate (801), a locking bolt (802), a limiting plate (803), and a second gasket (804), and the number of connecting components (8) is two.

7. The plate air filter with flat groove snap-fit ​​positioning according to claim 6, characterized in that: One end of the limiting plate (803) passes through the connecting plate (801) and the U-shaped plate (2), and the limiting plate (803), the connecting plate (801) and the U-shaped plate (2) are fixed together by locking bolts (802). The front side of the second gasket (804) is fixedly connected to the connecting plate (801), and the rear side of the second gasket (804) is in contact with the filter body (1).