A compression device for a high efficiency particulate air filter

Abstract

The utility model discloses a kind of compression devices of high-efficiency air filter, including the sealing baffle installed on the box and the two mounting plates installed on the box, mounting frame is arranged between the two mounting plates, four sliding rods are slidably installed on mounting frame, one end of four sliding rods close to sealing baffle is installed with same compression frame, the mutual cooperation of the structure such as the compression frame, threaded rod and mounting frame provided, so that when high-efficiency air filter is compressed and fixed, only need to rotate threaded rod, the connection frame can be driven by screwing in relation to make compression frame away from mounting frame and compress high-efficiency air filter on sealing baffle, greatly shorten the working time of replacing air filter, by the setting of compression frame, the pressure of high-efficiency air filter when compression frame contacts with high-efficiency air filter can be more uniform, and by the setting of four sliding rods, the moving direction of compression frame can be guided, and the moving process of compression frame is more stable.

Description

Technical Field

[0001] This utility model relates to the field of air purification equipment technology, specifically to a pressing device for a high-efficiency air filter. Background Technology

[0002] High-efficiency particulate air (HEPA) filters are primarily used to capture particulate dust and various suspended solids larger than 0.5 μm. HEPA filters are widely used in cleanrooms in industries such as optoelectronics, LCD manufacturing, biopharmaceuticals, precision instruments, beverage and food processing, and PCB printing. HEPA filters are key general-purpose equipment for air handling in cleanrooms and biosafety laboratories. Air in biosafety laboratories must be filtered before being discharged outdoors. External air in cleanrooms must also be filtered before being introduced. If filters are not installed reliably, contaminated air may be directly discharged or enter through leaks, endangering environmental safety or affecting indoor cleanliness.

[0003] Conventional HEPA filter installation involves attaching a foam sealing strip to the sealing side of the housing, embedding it into the sealing frame, and then installing the HEPA filter using a pressure plate. After pre-tightening the bolts, pressure is applied to press the pressure plate and the HEPA filter firmly into the sealing frame of the housing. This installation method requires manual bolt tightening, making it difficult to ensure uniform stress at the tightening points. After installation, the HEPA filter is prone to stress deformation, often resulting in leaks. Furthermore, manual operation requires tightening each bolt individually and repeatedly adjusting the pre-tightening force. Especially when personnel replace the HEPA filter, the prolonged contact with contaminated material significantly increases the risk of infection and misoperation, posing a substantial safety hazard. Therefore, the installation, disassembly, and maintenance of HEPA filters are inconvenient. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a pressing device for a high-efficiency air filter, thus solving the aforementioned technical problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pressing device for a high-efficiency air filter, comprising a sealing frame mounted on a housing and two mounting plates mounted on the housing, a mounting bracket provided between the two mounting plates, four sliding rods slidably mounted on the mounting bracket, a common pressure frame mounted on one end of each of the four sliding rods near the sealing frame, a threaded rod rotatably mounted on the pressure frame, a threaded hole provided on the mounting bracket, the threaded rod being threadedly connected to the mounting bracket through the threaded hole, a handle rotatably mounted on the mounting bracket, a rotating groove provided on the threaded rod, and a handle rotatably mounted within the rotating groove.

[0008] Preferably, each of the four sliding rods is fitted with a return spring, one end of which abuts against the mounting bracket and the other end of which abuts against the pressure frame.

[0009] Preferably, the mounting bracket has an H-shaped cross-section.

[0010] Preferably, the mounting bracket is welded between two mounting plates.

[0011] Preferably, a stop is welded to the top of each of the four sliding rods.

[0012] Preferably, the pressure frame is U-shaped, and a rubber pad is provided on the side of the pressure frame near the high-efficiency air filter.

[0013] Compared with the prior art, this utility model provides a pressing device for a high-efficiency air filter, which has the following advantages: Through the cooperation of a pressing frame, threaded rod, and mounting bracket, this utility model allows for pressing and fixing of the high-efficiency air filter simply by rotating the threaded rod. The threaded connection causes the connecting bracket to move the pressing frame away from the mounting bracket, pressing the high-efficiency air filter against the sealing baffle, greatly shortening the working time for replacing the air filter. The pressing frame design ensures more uniform pressure on the high-efficiency air filter when in contact with it. Furthermore, the four sliding rods guide the movement of the pressing frame, making its movement more stable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the sliding rod and pressure frame of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the threaded rod and pressure frame of this utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the connecting frame, threaded rod, and pressure frame of this utility model.

[0018] The components include: 1. Sealing frame; 2. High-efficiency air filter; 3. Mounting plate; 4. Mounting bracket; 5. Pressure frame; 6. Sliding rod; 7. Stop block; 8. Return spring; 9. Connecting bracket; 10. Threaded rod; 11. Handle; 12. Rotating groove; 13. Threaded hole; 14. Rubber pad; 15. Rotating hole; 16. Limiting protrusion. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figure 1-4 A pressing device for a high-efficiency air filter 2 includes a sealing frame 1 installed on a housing and two mounting plates 3 installed on the housing. A mounting bracket 4 is provided between the two mounting plates 3. Four sliding rods 6 are slidably installed on the mounting bracket 4. The same pressure frame 5 is installed on one end of the four sliding rods near the sealing frame 1. A threaded rod 10 is rotatably installed on the pressure frame 5. A threaded hole 13 is provided on the mounting bracket 4. The threaded rod 10 is threadedly connected to the mounting bracket 4 through the threaded hole 13. A rotating groove 12 is provided on the threaded rod 10. A handle 11 is rotatably installed in the rotating groove 12.

[0023] By cooperating with the pressure frame 5, threaded rod 10, and mounting bracket 4, when pressing and fixing the high-efficiency air filter 2, simply rotating the threaded rod 10 allows the connecting bracket 9 to move the pressure frame 5 away from the mounting bracket 4 through the threaded screwing relationship, thus pressing the high-efficiency air filter 2 against the sealing baffle. This greatly shortens the working time for replacing the air filter. The pressure frame 5 ensures more uniform pressure on the high-efficiency air filter 2 when in contact with it. Furthermore, the four sliding rods 6 guide the movement of the pressure frame 5, making its movement more stable.

[0024] Specifically, in this embodiment, each of the four sliding rods 6 is fitted with a return spring 8. One end of the return spring 8 abuts against the mounting bracket 4, and the other end of the return spring 8 abuts against the pressure frame 5.

[0025] The reset spring 8 provides improved self-locking between the threaded rod 10 and the mounting bracket 4, preventing the threaded rod 10 from shaking due to vibration and thus affecting the pressure of the pressure frame 5 on the high-efficiency air filter 2.

[0026] Specifically, in this embodiment, the cross-section of the mounting bracket 4 is H-shaped.

[0027] Specifically, in this embodiment, the mounting bracket 4 is welded between two mounting plates 3. By welding it to the two mounting plates 3, the overall structural stability of the mounting bracket 4 can be ensured.

[0028] Specifically, in this embodiment, a stop block 7 is welded to the top of each of the four sliding rods 6.

[0029] By setting the stop 7, the range of movement of the sliding rod 6 can be guaranteed, so that the sliding rod 6 will not detach from the mounting bracket 4.

[0030] Specifically, in this embodiment, the pressure frame 5 is U-shaped, and a rubber pad 14 is provided on the side of the pressure frame 5 near the high-efficiency air filter 2, which can further reduce the damage caused by the pressure frame 5 to the high-efficiency air filter 2.

[0031] Specifically, in this embodiment, the connecting frame 9 is provided with a rotating hole 15, and a limiting protrusion 16 is provided at one end of the threaded rod 10 near the connecting frame 9. The limiting protrusion 16 is rotatably installed in the rotating hole 15. Through the limiting protrusion 16 and the rotating hole 15, the threaded rod 10 can rotate in the rotating hole 15.

[0032] 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 pressing device for a high-efficiency air filter, comprising a sealing frame mounted on a housing and two mounting plates mounted on the housing, characterized in that: A mounting bracket is provided between the two mounting plates. Four sliding rods are slidably mounted on the mounting bracket. The same pressure frame is installed on one end of the four sliding rods near the sealing frame. A threaded rod is rotatably mounted on the pressure frame. The mounting bracket has a threaded hole. The threaded rod is threadedly connected to the mounting bracket through the threaded hole. A handle is rotatably mounted on the mounting bracket. A rotating groove is provided on the threaded rod. The handle is rotatably mounted in the rotating groove.

2. The pressing device for a high-efficiency air filter according to claim 1, characterized in that: Each of the four sliding rods is fitted with a return spring, one end of which abuts against the mounting bracket and the other end of which abuts against the pressure frame.

3. The pressing device for a high-efficiency air filter according to claim 1, characterized in that: The mounting bracket has an H-shaped cross-section.

4. The pressing device for a high-efficiency air filter according to claim 1, characterized in that: The mounting bracket is welded between the two mounting plates.

5. The pressing device for a high-efficiency air filter according to claim 1, characterized in that: Each of the four sliding rods has a stop welded to its top.

6. The pressing device for a high-efficiency air filter according to claim 1, characterized in that: The pressure frame is U-shaped, and a rubber pad is provided on the side of the pressure frame near the high-efficiency air filter.

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