HEPA (High Efficiency Particulate Air) microfiltration filter

Abstract

The utility model discloses an HEPA (High Efficiency Particulate Air) efficient microfiltration filter which comprises a filter frame, a mounting plate is fixedly arranged on one side of the filter frame, an air inlet pipeline is mounted on the mounting plate, a fan is arranged on the inner side of the air inlet pipeline, a mesh plate is fixedly arranged on one side of the mounting plate, and an output shaft of the fan penetrates through the mesh plate and is fixedly provided with a mounting block; a supporting rod is fixedly arranged on the mounting block, bristles used for cleaning the surface of the mesh plate are arranged on the supporting rod, an HEPA filter screen is arranged on the inner side of the filter frame, a notch used for mounting the HEPA filter screen is formed in the upper end of the filter frame, and the upper end of the HEPA filter screen extends out of the notch and is provided with a mounting assembly connected with the filter frame. Large-particle dust in air is filtered through the mesh plate, the filtered large-particle dust part can be attached to the surface of the mesh plate, the mounting block and the supporting rod are driven to rotate through the output shaft of the fan, the surface of the mesh plate is cleaned through the multiple sets of bristles, and the mesh plate is prevented from being blocked as much as possible.

Description

Technical Field

[0001] The utility model belongs to the technical field of HEPA filters, and particularly relates to a HEPA high-efficiency microfiltration filter. Background Art

[0002] A HEPA filter is a common air filter used to purify air and remove tiny particulate matter therein. It is a sealed filter that can capture at least 99.97% of the particulate matter with a diameter of 0.3 microns in the air. The HEPA filter adopts a special fiber structure, usually made of glass fiber or synthetic fiber. This structure can form a mesh-like filter layer, and physically filter particulate matter such as microparticles, dust, pollen, bacteria, and viruses in the air. Since the filter layer is very dense, it can block larger particulate matter and provide a large surface area, enabling the air to better contact the filter layer when passing through, thereby achieving an efficient filtering effect.

[0003] At present, some HEPA filters on the market mostly only have the function of air filtration and do not have the function of removing and collecting large particulate dust. As a result, when too much large particulate dust accumulates on the surface of the HEPA filter screen, it is easy to cause its blockage, which will hinder the normal flow of air and reduce the ventilation effect of the filter screen, thereby reducing the overall filtration efficiency. Content of the Utility Model

[0004] Aiming at the problem that when too much large particulate dust accumulates on the surface of some HEPA filters on the market, it is easy to cause their blockage, which will hinder the normal flow of air and reduce the ventilation effect of the filter screen, thereby reducing the overall filtration efficiency, the utility model provides a HEPA high-efficiency microfiltration filter.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a HEPA high-efficiency microfiltration filter, including a filter frame, one side of the filter frame is fixedly provided with a mounting plate, an air inlet pipe is installed on the mounting plate, a fan is arranged inside the air inlet pipe, a perforated plate is fixedly provided on one side of the mounting plate, the output shaft of the fan penetrates through the perforated plate and is fixedly provided with a mounting block, a support rod is fixedly provided on the mounting block, and a brush for cleaning the surface of the perforated plate is arranged on the support rod. A HEPA filter screen is arranged inside the filter frame, a notch for installing the HEPA filter screen is opened at the upper end of the filter frame, and the upper end of the HEPA filter screen extends out of the notch and is provided with a mounting component connected to the filter frame.

[0006] Preferably, a bolt is penetrated through the mounting block, and a threaded hole adapted to the bolt is opened on the output shaft of the fan.

[0007] Preferably, a plurality of groups of bristles are provided, and the plurality of groups of bristles are evenly distributed on the support rod.

[0008] Preferably, the mounting assembly includes a first magnet and a second magnet. The first magnet is fixedly arranged on the HEPA filter net, and the second magnet is fixedly arranged on the top of the filter frame. The first magnet and the second magnet are magnetically fixed.

[0009] Preferably, a sealing plate is arranged at the upper end of the HEPA filter net, and the sealing plate is adapted to the notch.

[0010] Preferably, a handle is fixedly arranged at the top end of the HEPA filter net.

[0011] Preferably, an activated carbon filter net and a dust-proof net are arranged inside the filter frame, and the activated carbon filter net is located between the HEPA filter net and the dust-proof net.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The large-particle dust in the air is filtered by the mesh plate. Some of the filtered large-particle dust will adhere to the surface of the mesh plate. The output shaft of the fan drives the mounting block and the support rod to rotate, and the surface of the mesh plate is cleaned by a plurality of groups of bristles, so as to avoid the blockage of the mesh plate as much as possible.

[0014] 2. By arranging the first magnet and the second magnet, when the HEPA filter net needs to be replaced, the handle is pulled upward to separate the first magnet from the second magnet, thereby driving the HEPA filter net to move upward, and then the HEPA filter net is taken out for replacement, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0016] Figure 2 is a schematic cross-sectional structural diagram of the whole of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the HEPA filter net of the present utility model;

[0018] Figure 4 is the present utility model Figure 2 The enlarged structural diagram at A in.

[0019] In the figure: 1. Filter frame; 2. Mounting plate; 3. Air inlet duct; 4. Fan; 5. Mesh plate; 6. Mounting block; 7. Support rod; 8. Bristles; 9. HEPA filter net; 10. Notch; 11. Bolt; 12. First magnet; 13. Second magnet; 14. Sealing plate; 15. Handle; 16. Activated carbon filter net; 17. Dust-proof net. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Refer to Figures 1-4 , a HEPA high-efficiency microfiltration filter, including a filter frame 1. One side of the filter frame 1 is fixedly provided with a mounting plate 2. An air inlet pipe 3 is installed on the mounting plate 2. A fan 4 is arranged inside the air inlet pipe 3. One side of the mounting plate 2 is fixedly provided with a perforated plate 5. The output shaft of the fan 4 penetrates through the perforated plate 5 and is fixedly provided with a mounting block 6. A support rod 7 is fixedly provided on the mounting block 6. A brush 8 for cleaning the surface of the perforated plate 5 is arranged on the support rod 7. There are multiple groups of brushes 8, and the multiple groups of brushes 8 are evenly distributed on the support rod 7. The multiple groups of brushes 8 are in contact with the surface of the perforated plate 5.

[0022] Specifically, after the air is introduced into the air inlet pipe 3 by the fan 4, the air will contact the perforated plate 5. The large-particle dust in the air is filtered through the perforated plate 5. Part of the filtered large-particle dust will adhere to the surface of the perforated plate 5. The output shaft of the fan 4 drives the mounting block 6 and the support rod 7 to rotate, and the surface of the perforated plate 5 is cleaned by multiple groups of brushes 8 to avoid blockage of the perforated plate 5 as much as possible.

[0023] Furthermore, a HEPA filter screen 9 is arranged inside the filter frame 1. A notch 10 for installing the HEPA filter screen 9 is opened at the upper end of the filter frame 1. The upper end of the HEPA filter screen 9 extends out of the notch 10 and is provided with a mounting component connected to the filter frame 1. The mounting component includes a first magnet 12 and a second magnet 13. The first magnet 12 is fixedly provided on the HEPA filter screen 9, and the second magnet 13 is fixedly provided on the top of the filter frame 1. The first magnet 12 and the second magnet 13 are magnetically fixed.

[0024] Among them, a sealing plate 14 is arranged at the upper end of the HEPA filter screen 9. The sealing plate 14 is adapted to the notch 10 to seal the connection between the HEPA filter screen 9 and the notch 10. A handle 15 is fixedly provided at the top of the HEPA filter screen 9.

[0025] Specifically, the air entering the air inlet pipe 3 continues to flow and is filtered through the HEPA filter screen 9. The HEPA filter screen 9 has a high-efficiency and microfiltration effect. When the HEPA filter screen 9 needs to be replaced, pull up the handle 15 to separate the first magnet 12 from the second magnet 13, thereby driving the HEPA filter screen 9 to move upward, and then take out the HEPA filter screen 9 for replacement.

[0026] In addition, bolts 11 are provided through the mounting block 6, and screw holes matching the bolts 11 are provided on the output shaft of the fan 4. The bolts 11 facilitate installation, disassembly and cleaning of the mounting block 6 and the support rod 7.

[0027] In addition, an activated carbon filter 16 and a dustproof net 17 are arranged on the inner side of the filter frame 1. The activated carbon filter 16 is located between the HEPA filter 9 and the dustproof net 17. The activated carbon filter 16 removes odors in the air, and the dustproof net 17 provides dust protection.

[0028] The operating principle of the utility model is now described as follows: after the air is introduced into the air inlet duct 3 by the fan 4, the air will contact the mesh plate 5, and the large dust particles in the air will be filtered by the mesh plate 5. The filtered large dust particles will adhere to the surface of the mesh plate 5, and the mounting block 6 and the support rod 7 are driven to rotate by the output shaft of the fan 4, and the surface of the mesh plate 5 is cleaned by multiple groups of bristles 8 to avoid the mesh plate 5 from being blocked as much as possible. The air entering the air inlet duct 3 continues to flow, and is filtered by the HEPA filter 9, and the odor in the air is removed by the activated carbon filter 16, and dust protection is performed by the dustproof net 17;

[0029] When the HEPA filter 9 needs to be replaced, the handle 15 is pulled upward to separate the first magnet 12 from the second magnet 13, thereby driving the HEPA filter 9 to move upward, and then the HEPA filter 9 is taken out for replacement.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A HEPA high efficiency microfiltration filter, comprising a filter frame (1), characterized in that: A mounting plate (2) is fixedly arranged on one side of the filter frame (1), an air inlet duct (3) is mounted on the mounting plate (2), a fan (4) is arranged inside the air inlet duct (3), a mesh plate (5) is fixedly arranged on one side of the mounting plate (2), an output shaft of the fan (4) passes through the mesh plate (5) and a mounting block (6) is fixedly arranged on the mounting block (6), a support rod (7) is fixedly arranged on the mounting block (6), a brush (8) for cleaning the surface of the mesh plate (5) is arranged on the support rod (7), a HEPA filter (9) is arranged inside the filter frame (1), a notch (10) for mounting the HEPA filter (9) is provided at the upper end of the filter frame (1), the upper end of the HEPA filter (9) extends out of the notch (10) and is provided with a mounting component connected to the filter frame (1).

2. A HEPA high efficiency microfiltration filter according to claim 1, characterized in that: The mounting block (6) is provided with a bolt (11) penetrating therethrough, and the output shaft of the fan (4) is provided with a screw hole matched with the bolt (11).

3. A HEPA high efficiency microfiltration filter according to claim 1, characterized in that: The bristles (8) are arranged in multiple groups, and the multiple groups of bristles (8) are evenly distributed on the support rod (7).

4. A HEPA high efficiency microfiltration filter according to claim 1, characterized in that: The mounting assembly comprises a first magnet (12) and a second magnet (13), wherein the first magnet (12) is fixedly arranged on the HEPA filter (9), and the second magnet (13) is fixedly arranged on the top of the filter frame (1), and the first magnet (12) and the second magnet (13) are fixedly arranged by magnetic attraction.

5. A HEPA high efficiency microfiltration filter according to claim 1, characterized in that: A sealing plate (14) is provided at the upper end of the HEPA filter (9), and the sealing plate (14) is adapted to the notch (10).

6. A HEPA high efficiency microfiltration filter according to claim 1, characterized in that: A handle (15) is fixedly provided on the top of the HEPA filter (9).

7. A HEPA high efficiency microfiltration filter according to claim 1, characterized in that: An activated carbon filter (16) and a dustproof net (17) are arranged inside the filter frame (1), and the activated carbon filter (16) is located between the HEPA filter (9) and the dustproof net (17).

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