Composite primary cotton filter

Abstract

The utility model provides a compound type primary efficiency cotton filter, a filter element comprises a nano coating and a primary efficiency static cotton layer, the primary efficiency static cotton layer and the nano coating are sequentially arranged in a filter frame from an air inlet end to an air outlet end, and the primary efficiency static cotton layer is connected with the nano coating through spraying. Dust particles are not prone to permeating a medium through viscous treatment, diffusion is reduced, meanwhile, performance is stable through adhesion of the nano coating, the toughness of the filter element is improved, the thickness ratio of the primary electrostatic cotton layer to the nano coating is one of 12: 1 or 15: 1, the filtering area is increased, damage of dust to primary electrostatic cotton is reduced, the reject ratio is reduced, and the service life of the filter element is prolonged. The dust holding capacity and the moisture resistance of the primary electrostatic cotton layer are higher, so that the service life of the filter element is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of air purification equipment technology, and more specifically, to a composite primary cotton filter. Background Technology

[0002] Air filter cotton is widely used in industries such as precision electronics, optical electronics, biopharmaceuticals, food production, and air cooling. This is because many industrial production processes must be carried out in relatively clean spaces, such as surface treatment, painting, and spraying. These process environments require flowing air but cannot contain dust. Therefore, filter cotton is needed to filter out the dust and allow only clean air to circulate in a relatively enclosed space to meet the needs of production operations.

[0003] The closest existing technology is disclosed in CN214437487U, which discloses a robust plate filter that includes a plate frame, a connecting frame inside the plate frame, an outer side wall of the connecting frame being detachably connected to the inner side wall of the plate frame, two layers of wire mesh inside the connecting frame, and filter cotton between the two layers of wire mesh.

[0004] The existing filters have a short service life and require frequent replacement. For example: (1) Under the rated air volume, the service life is 1-2 months; (2) When the resistance of the filter cotton reaches more than 200Pa, the filter cotton must be replaced; (3) If the dust concentration in the environment is high, the rated service life of 1-2 months will be reduced further.

[0005] In view of this, the present invention proposes a composite primary cotton filter with a long service life and high structural strength. Utility Model Content

[0006] The purpose of this invention is to provide a composite primary cotton filter with a long service life and high structural strength.

[0007] A composite primary cotton filter includes a filter frame 1 and a filter element 2. The filter frame 1 contains the filter element 2. The filter element 2 includes a nano-coating 3 and a primary electrostatic cotton layer 4. The primary electrostatic cotton layer 4 and the nano-coating 3 are sequentially arranged from the air inlet to the air outlet within the filter frame 1. The primary electrostatic cotton layer 4 is used for initial filtration of incoming air particles, and the nano-coating 3 is used for secondary filtration of dust particles to prevent dust diffusion. The primary electrostatic cotton layer 4 and the nano-coating 3 are connected by spraying. The thickness ratio between the primary electrostatic cotton layer 4 and the nano-coating 3 is one of 12:1 or 15:1.

[0008] Furthermore, the thickness of the primary electrostatic cotton layer 4 is 2.6mm-2.8mm.

[0009] Furthermore, the thickness of the nano-coating 3 is 0.2 mm.

[0010] Furthermore, the thickness of filter element 2 is 2.8mm-3mm, which increases the filtration area, reduces the damage of dust to the primary electrostatic cotton, reduces the defect rate, and thus extends the service life.

[0011] In some embodiments, the nano-coating 3 material is an electrospun material.

[0012] In some embodiments, the material of the primary electrostatic cotton layer 4 is spray-bonded cotton material.

[0013] In some embodiments, an auxiliary adhesive layer is provided between the nano-coating 3 and the primary electrostatic cotton layer 4, and the auxiliary adhesive layer is made of adhesive material.

[0014] In some embodiments, the filter frame 1 is also provided with a protective mesh 5 at both the air inlet and air outlet ends to prevent impurities from entering the filter element 2 and to strengthen the structural strength of the filter frame 1.

[0015] In some embodiments, the filter element 2 has a V-shaped structure, which is formed by integral folding, and the filter element 2 is placed parallel inside the filter frame 1.

[0016] The beneficial effects of this utility model are as follows: This utility model proposes a composite primary cotton filter. The filter element 2 includes a nano-coating 3 and a primary electrostatic cotton layer 4. The primary electrostatic cotton layer 4 and the nano-coating 3 are sequentially arranged from the air inlet to the air outlet inside the filter frame 1. The primary electrostatic cotton layer 4 and the nano-coating 3 are connected by spraying. The adhesive treatment makes it difficult for dust particles to penetrate the medium and reduces diffusion. At the same time, the adhesion of the nano-coating makes the performance stable and improves the toughness of the filter element. The thickness ratio between the primary electrostatic cotton layer 4 and the nano-coating 3 is one of 12:1 or 15:1, which increases the filtration area, reduces the destructive effect of dust on the primary electrostatic cotton, reduces the defect rate, and makes the primary electrostatic cotton layer 4 have a larger dust holding capacity and moisture resistance, thereby extending the service life of the filter element. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a filter mounting frame structure according to the present application.

[0018] Figure 2 This is a front view of a filter mounting frame structure according to this application.

[0019] Figure 3 This is a cross-sectional view of a filter mounting frame structure according to this application.

[0020] Figure 4 This is a schematic diagram of the filter element connection structure of a filter mounting frame structure according to this application.

[0021] Description of main component symbols

[0022] Filter frame 1, filter element 2, nano coating 3, primary electrostatic cotton layer 4, protective mesh 5.

[0023] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0024] The following embodiments are described to aid in understanding this application. These embodiments are not, and should not be, construed in any way as limiting the scope of protection of this application.

[0025] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as individual functional units (which may include subunits), but those skilled in the art will recognize that various components or portions thereof may be divided into individual components or may be integrated together (including integrated within a single system or component).

[0026] Furthermore, the connection between components or systems is not intended to be limited to a direct connection; on the contrary, data between these components may be modified, reformatted, or otherwise altered by intermediate components. Additionally, other or fewer connections may be used. It should also be noted that the terms "connection," "link," or "input" should be understood to include direct connections, indirect connections via one or more intermediate devices, and wireless connections. Example 1:

[0027] like Figure 1 The diagram shown is a structural schematic of a filter mounting frame structure according to this application; as shown Figure 2 The image shown is a front view of a filter mounting frame structure according to this application; as shown... Figure 3 The image shown is a cross-sectional view of a filter mounting frame structure according to this application; as shown... Figure 4 The diagram shown is a schematic diagram of the filter element connection structure of a filter mounting frame structure according to this application.

[0028] A composite primary cotton filter includes a filter frame 1 and a filter element 2. The filter frame 1 contains the filter element 2. The filter element 2 includes a nano-coating 3 and a primary electrostatic cotton layer 4. The primary electrostatic cotton layer 4 and the nano-coating 3 are sequentially arranged from the air inlet to the air outlet within the filter frame 1. The primary electrostatic cotton layer 4 is used for initial filtration of incoming air particles, and the nano-coating 3 is used for secondary filtration of dust particles to prevent dust diffusion. The primary electrostatic cotton layer 4 and the nano-coating 3 are connected by spraying. The thickness ratio between the primary electrostatic cotton layer 4 and the nano-coating 3 is one of 12:1 or 15:1.

[0029] The thickness of the primary electrostatic cotton layer 4 is 2.6mm-2.8mm.

[0030] The thickness of the nano-coating 3 is 0.2 mm.

[0031] The thickness of filter element 2 is 2.8mm-3mm, which increases the filtration area, reduces the damage of dust to the primary electrostatic cotton, reduces the defect rate, and thus extends the service life.

[0032] The nano-coating 3 material is an electrospun material.

[0033] The material of the primary electrostatic cotton layer 4 is spray-bonded cotton material.

[0034] An auxiliary adhesive layer is provided between the nano-coating 3 and the primary electrostatic cotton layer 4. The auxiliary adhesive layer is made of adhesive material.

[0035] The filter frame 1 is also equipped with a protective mesh 5 at both the air inlet and air outlet ends to prevent impurities from entering the filter element 2 and to strengthen the structural strength of the filter frame 1.

[0036] The filter element 2 has a V-shaped structure, which is formed by folding an integral piece. The filter element 2 is placed parallel inside the filter frame 1.

[0037] Without the nano-coating 3, the filter cartridge test data are shown in Table 1 below:

[0038]

[0039] The filter efficiency is 3.92% when the filtered gas particle size is 0.3 μm, 5.18% when the filtered gas particle size is 0.5 μm, 9.77% when the filtered gas particle size is 1.0 μm, 15.50% when the filtered gas particle size is 3.0 μm, 72.04% when the filtered gas particle size is 5.0 μm, and 80.63% when the filtered gas particle size is 10.0 μm.

[0040] When nano-coating 3 is applied, the filter cartridge test data are shown in Table 2 below:

[0041]

[0042] The filter efficiency is 50.40% when the filtered gas particle size is 0.3 μm, 84.10% when the filtered gas particle size is 0.5 μm, 91.34% when the filtered gas particle size is 1.0 μm, 94.78% when the filtered gas particle size is 3.0 μm, 98.42% when the filtered gas particle size is 5.0 μm, and 99.08% when the filtered gas particle size is 10.0 μm.

[0043] A comparison of Tables 1 and 2 shows that after adding the nano-coating 3, the filtration efficiency increased from 3.92% to 50.40% for a gas particle size of 0.3 μm, from 5.18% to 84.10% for a gas particle size of 0.5 μm, from 9.77% to 91.34% for a gas particle size of 1.0 μm, and from 15.50% to 94.78% for a gas particle size of 3.0 μm. The filtration efficiency was significantly improved when the particle size was in the range of 0.3 μm to 3.0 μm. For a gas particle size of 5.0 μm, the filtration efficiency increased from 72.04% to 98.42%, and for a gas particle size of 10.0 μm, it increased from 80.63% to 99.08%, showing a moderate increase. All particle sizes significantly improved the filtration efficiency.

[0044] The beneficial effects of this utility model are as follows: This utility model proposes a composite primary cotton filter. The filter element 2 includes a nano-coating 3 and a primary electrostatic cotton layer 4. The primary electrostatic cotton layer 4 and the nano-coating 3 are sequentially arranged from the air inlet to the air outlet inside the filter frame 1. The primary electrostatic cotton layer 4 and the nano-coating 3 are connected by spraying. The adhesive treatment makes it difficult for dust particles to penetrate the medium and reduces diffusion. At the same time, the adhesion of the nano-coating makes the performance stable and improves the toughness of the filter element. The thickness ratio between the primary electrostatic cotton layer 4 and the nano-coating 3 is one of 12:1 or 15:1, which increases the filtration area, reduces the destructive effect of dust on the primary electrostatic cotton, reduces the defect rate, and makes the primary electrostatic cotton layer 4 have a larger dust holding capacity and moisture resistance, thereby extending the service life of the filter element.

[0045] Although this application discloses several aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art. Various modifications and improvements can be made without departing from the concept of this application, and these all fall within the scope of protection of this application. The various aspects and embodiments disclosed in this application are for illustrative purposes only and are not intended to limit this application. The actual scope of protection of this application is determined by the claims.

Claims

1. A composite primary cotton filter, comprising a filter frame (1) and a filter element (2), wherein the filter frame (1) contains the filter element (2), characterized in that: The filter element (2) includes a nano-coating (3) and a primary electrostatic cotton layer (4). The filter frame (1) is provided with a primary electrostatic cotton layer (4) and a nano-coating (3) in sequence from the air inlet to the air outlet. The primary electrostatic cotton layer (4) is used to perform initial filtration of airborne particles, and the nano-coating (3) is used to filter dust particles again to prevent dust diffusion. The primary electrostatic cotton layer (4) and the nano-coating (3) are connected by spraying. The thickness ratio between the primary electrostatic cotton layer (4) and the nano-coating (3) is one of 12:1 or 15:

1.

2. The composite primary cotton filter as described in claim 1, characterized in that: The thickness of the primary electrostatic cotton layer (4) is 2.6mm-2.8mm.

3. The composite primary cotton filter as described in claim 1, characterized in that: The thickness of the nano-coating (3) is 0.2 mm.

4. The composite primary cotton filter as described in claim 1, characterized in that: The thickness of the filter element (2) is 2.8mm-3mm.

5. The composite primary cotton filter as described in claim 1, characterized in that: The nano-coating (3) material is an electrospun material.

6. The composite primary cotton filter as described in claim 1, characterized in that: The material of the primary electrostatic cotton layer (4) is spray-bonded cotton material.

7. The composite primary cotton filter as described in claim 1, characterized in that: An auxiliary adhesive layer is provided between the nano-coating (3) and the primary electrostatic cotton layer (4), and the auxiliary adhesive layer is made of adhesive material.

8. The composite primary cotton filter as described in claim 1, characterized in that: The filter frame (1) is also equipped with a protective mesh (5) at both the air inlet and air outlet ends to prevent impurities from entering the filter element (2) and to strengthen the structural strength of the filter frame (1).

9. The composite primary cotton filter as described in claim 1, characterized in that: The filter element (2) has a V-shaped structure, which is formed by folding the filter element (2) into one piece. The filter element (2) is placed parallel inside the filter frame (1).

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