Sub-efficient air filter for clean laboratory

Abstract

The utility model discloses a sub-efficient air filter for a clean laboratory, which relates to the technical field of air filters and comprises a shell, a front filter part is mounted at the air inlet end of the shell, and a secondary filter part is arranged in the middle of the shell; the front filter part comprises a filter bag mounted at the opening end of the shell and a fixing part for fixing the opening end of the shell and the filter bag; according to the air purifier, the front filtering part and the secondary filtering part are arranged on the shell, the front filtering part is installed at the air inlet end of the shell for air filtering, the secondary filtering part is used for filtering air filtered by the front filtering part, the cleanliness of air filtering is improved, and the problem that large-particle dust is accumulated when a single-layer filtering part is adopted is solved; the front filter frame comprises a filter bag which is fixedly mounted at the opening end of the shell through a fixing piece, and the filter bag is used for increasing the contact area with air, so that the time of blocking the filter bag by dust is prolonged during use, and the service life of the sub-high-efficiency air filter is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to a sub-high efficiency air filter for a clean laboratory. Background Art

[0002] An air filter is a device that captures dust from a gas-solid two-phase flow through the action of a porous filter material and purifies the gas. It purifies the air with a low dust content and sends it into the room to ensure the process requirements of a clean room and the air cleanliness in a general air-conditioned room. It is commonly used in clean laboratories to provide a clean environment for the laboratory.

[0003] Since the clean laboratory has relatively high requirements for the air environment, a single-layer air filter screen with relatively small pores is often used to filter the air. However, this type is prone to blockage at the air inlet end of the filter screen due to dust filtration, reducing the service life of the filter screen. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides the following technical solution: a sub-high efficiency air filter for a clean laboratory, including a housing, a pre-filter is installed at the air inlet end of the housing, and a secondary filter is arranged in the middle of the housing;

[0005] The pre-filter includes a filter bag installed at the opening end of the housing and a fixing member that fixes the opening end of the housing to the filter bag;

[0006] The secondary filter includes a filter screen inserted into a filter window opened in the middle of the housing. A filter screen ring is adhered to the outer edge of the filter screen. A support plate is adhered and fixed to the upper end of the filter screen ring. A handle is integrally formed on the upper surface of the support plate. A support ring is also adhered and fixed in the middle of the housing, and the support ring is located on both sides of the filter screen;

[0007] Blowers that blow air towards the air outlet end of the housing are arranged on both sides of the filter screen.

[0008] As an improvement of the above technical solution, the fixing member includes a support rod welded to the mouth end of the housing for supporting the filter bag, and a pressure limiting ring sleeved on the opening end of the housing. The pressure limiting ring also sleeves the opening end of the filter bag.

[0009] As an improvement of the above technical solution, the cross-section of the pressure limiting ring is a "U" - shaped structure, and a magnet that is fixed to the housing by magnetic force is adhered inside the pressure limiting ring.

[0010] As an improvement of the above technical solution, several support rods are evenly distributed at equal intervals.

[0011] As an improvement of the above technical solution, an end plate is welded to the end of the housing. Bolt holes for installation on the wall are opened on the end plate, and a protective net is arranged in the middle of the end plate.

[0012] As an improvement of the above technical solution, two blowers are provided on both sides of the filter net, and the two blowers are taken as a group. One group of blowers is installed in the shell between the filter net and the end plate, and the other group of blowers is installed in the shell between the filter net and the filter bag.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. Through the pre-filtering element and the secondary filtering element arranged in the shell, the pre-filtering element is installed at the air inlet end of the shell for air filtration, and the secondary filtering element is used for filtering the air filtered by the pre-filtering element, which improves the cleanliness of air filtration and avoids the problem of large particle dust accumulation caused by using a single-layer filtering element; the pre-filtering frame includes a filter bag fixedly installed at the opening end of the shell through a fixing member, and the filter bag is used to increase the contact area with air. During use, the time for dust to block the filter bag is prolonged, and the service life of the sub-high efficiency air filter is increased. The secondary filtering element includes a filter net, a support ring, a filter mesh ring, a support plate and a handle. The support ring adhesively fixed in the middle of the shell is used to support the filter net. The filter net increases the stability of its own structure through the filter mesh ring adhesively fixed on the outer edge. At the same time, a support plate is adhesively fixed to the upper end of the filter mesh ring, and a handle is integrally formed on the upper surface of the support plate, which is convenient to pull out the filter net from the filter window of the shell through the handle to achieve the purpose of replacing the filter net. The blowers installed on both sides of the filter net facilitate the air inside the shell to be discharged from the air outlet end under the action of the blowers, so as to facilitate the cooperation of the filter bag and the filter net to filter the air.

[0015] 2. Through the fixing member composed of a support rod, a pressure limiting ring and a magnet, the support rod welded at the opening end of the shell is used to support the filter bag, and the pressure limiting ring is sleeved on the opening ends of the shell and the filter bag, so that the shell and the filter bag are fixed through the pressure limiting ring. The pressure limiting ring with a "U"-shaped cross-section is convenient for the magnet to be adhesively fixed inside the pressure limiting ring, so that the pressure limiting ring is magnetically fixed to the shell through the magnet, realizing the purpose of fixing the filter bag by installing the pressure limiting ring at the end of the shell. Description of the Drawings

[0016] Figure 1 is a three-dimensional structure diagram of the utility model;

[0017] Figure 2 is a part structure diagram of the utility model;

[0018] Figure 3 is a sectional structure diagram of the utility model;

[0019] Figure 4 is Figure 3 the enlarged structure diagram at A in

[0020] Reference numerals: 1, housing; 2, support rod; 3, filter bag; 4, pressure limiting ring; 5, magnet; 6, support ring; 7, filter mesh ring; 8, support plate; 9, handle; 10, fan; 11, end plate; 12, protective net; 13, filter net. Detailed implementation mode

[0021] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] Please refer to Figures 1-4 , the present utility model provides a technical solution: a sub-high efficiency air filter for a clean laboratory, including a housing 1, a pre-filtering member is installed at the air inlet end of the housing 1, and a secondary filtering member is arranged in the middle of the housing 1; through the pre-filtering member and the secondary filtering member provided by the housing 1, the pre-filtering member is installed at the air inlet end of the housing 1 for air filtration, and the secondary filtering member is used for filtering the air after being filtered by the pre-filtering member, providing the cleanliness of air filtration and avoiding the problem of large particle dust accumulation when using a single-layer filtering member.

[0023] The pre-filtering member includes a filter bag 3 installed at the opening end of the housing 1 and a fixing member for fixing the filter bag 3 at the opening end of the housing 1; and the pre-filtering frame includes a filter bag 3 fixedly installed at the opening end of the housing 1 through a fixing member, and the filter bag 3 is used to increase the area of contact with air. During use, the time for dust to block the filter bag 3 is prolonged, and the service life of the sub-high efficiency air filter is increased.

[0024] The secondary filtering member includes a filter net 13 inserted into the filtering window opened in the middle of the housing 1. A filter mesh ring 7 is adhered to the outer edge of the filter net 13. A support plate 8 is fixedly adhered to the upper end of the filter mesh ring 7. A handle 9 is integrally formed on the upper surface of the support plate 8. A support ring 6 is also fixedly adhered to the middle of the housing 1, and the support ring 6 is located on both sides of the filter net 13; and the secondary filtering member includes a filter net 13, a support ring 6, a filter mesh ring 7, a support plate 8 and a handle 9. The support ring 6 fixedly adhered to the middle of the housing 1 is used to support the filter net 13. The filter net 13 increases the stability of its own structure through the filter mesh ring 7 adhered to the outer edge. At the same time, the upper end of the filter mesh ring 7 is adhered with a support plate 8, and a handle 9 is integrally formed on the upper surface of the support plate 8, which is convenient to pull out the filter net 13 from the filtering window of the housing 1 through the handle 9 to achieve the purpose of replacing the filter net 13.

[0025] Fans 10 for blowing air towards the air outlet end of the housing 1 are arranged on both sides of the filter net 13. The fans 10 installed on both sides of the filter net 13 facilitate the air inside the housing 1 to be discharged from the air outlet end under the action of the fans 10, so as to facilitate the cooperation of the filter bag 3 and the filter net 13 to filter the air.

[0026] Specifically, the fixing member includes a support rod 2 welded to the mouth end of the housing 1 for supporting the filter bag 3, and a pressure limiting ring 4 sleeved on the opening end of the housing 1. The pressure limiting ring 4 is also sleeved on the opening end of the filter bag 3. The cross section of the pressure limiting ring 4 is a "U" - shaped structure, and a magnet 5 magnetically fixed to the housing 1 is adhered inside the pressure limiting ring 4. A number of support rods 2 are evenly distributed.

[0027] In this embodiment, through the fixing member composed of the support rod 2, the pressure limiting ring 4 and the magnet 5, the support rod 2 welded to the opening end of the housing 1 is used to support the filter bag 3, and the pressure limiting ring 4 is sleeved on the opening ends of the housing 1 and the filter bag 3, so that the housing 1 and the filter bag 3 are fixed through the pressure limiting ring 4. The pressure limiting ring 4 with a cross - section of "U" - shaped structure facilitates the adhesion and fixation of the magnet 5 inside the pressure limiting ring 4, so that the pressure limiting ring 4 can be magnetically fixed to the housing 1 through the magnet 5, achieving the purpose of fixing the filter bag 3 by installing the pressure limiting ring 4 at the end of the housing 1.

[0028] Specifically, an end plate 11 is welded to the end of the housing 1. Bolt holes for installation on the wall are provided on the end plate 11, and a protective net 12 is arranged in the middle of the end plate 11.

[0029] In this embodiment, through the end plate 11 welded to the end of the housing 1, it is convenient for the sub - high - efficiency air filter to be fixed on the wall through the bolt holes provided on the surface of the end plate 11, and the protective net 12 arranged in the middle of the end plate 11 is used to protect the inside of the housing 1, increasing the safety of using the sub - high - efficiency air filter.

[0030] Specifically, two blowers 10 are provided on both sides of the filter net 13, and the two blowers 10 are taken as a group. One group of blowers 10 is installed in the housing 1 between the filter net 13 and the end plate 11, and the other group of blowers 10 is installed in the housing 1 between the filter net 13 and the filter bag 3.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. A sub-high efficiency air filter for a clean laboratory, comprising a housing (1), characterized in that: A pre-filter is installed at the air inlet end of the housing (1), and a secondary filter is provided in the middle of the housing (1). The pre-filter includes a filter bag (3) installed at the open end of the housing (1) and a fixing member for fixing the open end of the housing (1) to the filter bag (3). The secondary filter includes a filter net (13) inserted into a filter window opened in the middle of the housing (1). A filter net ring (7) is adhered to the outer edge of the filter net (13). A support plate (8) is adhered and fixed to the upper end of the filter net ring (7). A handle (9) is integrally formed on the upper surface of the support plate (8). A support ring (6) is also adhered and fixed in the middle of the housing (1), and the support ring (6) is located on both sides of the filter net (13). Blowers (10) for blowing air towards the air outlet end of the housing (1) are provided on both sides of the filter net (13).

2. The sub-high efficiency air filter for a clean laboratory according to claim 1, wherein: The fixing member includes a support rod (2) welded to the mouth-end of the housing (1) for supporting the filter bag (3) and a pressure-limiting ring (4) sleeved on the open end of the housing (1). The pressure-limiting ring (4) is also sleeved on the open end of the filter bag (3).

3. The sub-high efficiency air filter for a clean laboratory according to claim 2, wherein: The cross-section of the pressure-limiting ring (4) is a "U" - shaped structure, and a magnet (5) magnetically fixed to the housing (1) is adhered inside the pressure-limiting ring (4).

4. The sub-high efficiency air filter for a clean laboratory according to claim 2, characterized in that: A number of the support rods (2) are equally spaced.

5. The sub-high efficiency air filter for a clean laboratory according to claim 1, characterized in that: An end plate (11) is welded to the end of the housing (1). Bolt holes for mounting on a wall are provided in the end plate (11), and a protective net (12) is provided in the middle of the end plate (11).

6. The sub-high efficiency air filter for a clean laboratory according to claim 5, wherein: Two blowers (10) are provided on each side of the filter net (13), and the two blowers (10) form a group. One group of blowers (10) is installed in the housing (1) between the filter net (13) and the end plate (11), and the other group of blowers (10) is installed in the housing (1) between the filter net (13) and the filter bag (3).

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