A multi-layer composite filtration structure

Abstract

The utility model relates to air paint mist particle filtering technical field, concretely is a kind of multilayer composite filter structure, including the surface filter cotton layer, intermediate glass fiber layer and bottom layer fine filter cotton layer that are sequentially laminated, and surface filter cotton layer is the three-dimensional rhombic grid structure filter cotton of press moulding, intermediate glass fiber layer is the glass fiber cotton of three-dimensional network structure, and bottom layer fine filter cotton layer is G2 grade filter cotton.The multilayer composite filter structure effectively solves the problem that dust-containing air filtration faces in paint spraying industry by its unique laminated design and material selection, improves filtering efficiency, increases dust capacity, prolongs replacement cycle, reduces operating cost, meets actual production demand.

Description

Technical Field

[0001] This utility model relates to the field of air paint mist particle filtration technology, specifically to a multi-layer composite filtration structure. Background Technology

[0002] In the spray painting industry, a large amount of dusty air, containing paint mist particles of varying sizes, is generated during the spraying process. If these paint mist particles are released directly into the environment without effective treatment, they will not only pollute the atmosphere but also harm the health of operators. Furthermore, dusty air in the spray painting workshop environment can affect the quality of the spraying, leading to surface defects and reducing the product yield. Therefore, effective filtration of dusty air in the spray painting industry is crucial.

[0003] Currently, ordinary filter materials used for dusty air filtration in the painting industry have many problems. On the one hand, these materials have low efficiency in capturing paint mist particles in the air. During the spraying process, paint mist particles have a wide range of sizes, from large to fine particles, and ordinary filter materials often cannot effectively intercept particles of different sizes, causing some paint mist particles to penetrate the filter material and failing to achieve the desired filtration effect.

[0004] On the other hand, the dust holding capacity of a single filter is relatively small. Ordinary filter media are prone to clogging the air pores on the surface during use. Once the air pores are clogged, the internal filter media cannot function fully, causing the filter to lose its filtering capacity before reaching its theoretical dust holding capacity, resulting in waste during use.

[0005] Furthermore, existing filters have short replacement cycles and high operating costs. Due to their low filtration efficiency and small dust holding capacity, filters need to be replaced frequently, which not only increases the workload of equipment maintenance but also raises filtration costs, including the purchase cost of the filters themselves as well as the labor and time costs incurred during the replacement process.

[0006] In summary, existing dust-laden air filtration technologies in the painting industry are insufficient to meet actual production needs. There is an urgent need for a new filtration structure that can improve filtration efficiency, increase dust capacity, extend replacement cycles, and reduce operating costs to solve the current challenges faced by the painting industry in dust-laden air filtration. Utility Model Content

[0007] To address the aforementioned issues, this invention provides a multi-layer composite filter structure. Through its unique layered design and material selection, this multi-layer composite filter structure effectively solves the problems faced by the painting industry in filtering dusty air, improves filtration efficiency, increases dust holding capacity, extends replacement cycle, reduces operating costs, and meets actual production needs.

[0008] The technical solution of this utility model is as follows:

[0009] A multi-layer composite filter structure includes a surface filter cotton layer, a middle fiberglass layer and a bottom fine filter cotton layer stacked sequentially; the surface filter cotton layer is a three-dimensional diamond-shaped mesh structure filter cotton formed by compression molding, the middle fiberglass layer is a three-dimensional mesh structure fiberglass cotton, and the bottom fine filter cotton layer is G2 grade filter cotton.

[0010] The surface filter cotton layer has a weight of 350g / ㎡ and a thickness of 20-25mm.

[0011] The three-dimensional diamond-shaped grid structure of the surface filter cotton layer is formed by die-cutting, creating a space within the grid that can accommodate the deposition of paint mist particles.

[0012] The weight of the intermediate fiberglass layer is 180g / ㎡, and the thickness is 40-70mm.

[0013] The fiberglass layer in the middle has a gradient increasing density from the air inlet to the air outlet.

[0014] The surface filter layer, the middle fiberglass layer, and the bottom fine filter layer are fixed together by adhesive overheating and rolling or by quilting.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model discloses a multi-layer composite filter structure that improves filtration efficiency. The surface filter layer uses a three-dimensional diamond-shaped mesh filter cotton formed by compression molding. The mesh is formed by die-cutting, creating a space within the mesh that can accommodate paint mist particles, which helps to capture and retain larger paint mist particles, thus improving the filtration efficiency for large paint mist particles. The middle fiberglass layer is a three-dimensional mesh fiberglass cotton, and the fiberglass density increases in a gradient from the air inlet to the air outlet. This allows paint mist particles of different sizes to be effectively intercepted by fiberglass of different densities when air passes through, improving the capture efficiency for paint mist particles of different sizes. The bottom fine filter cotton layer uses G2 grade filter cotton, further ensuring the filtration effect on fine paint mist particles, thereby improving the overall filtration efficiency.

[0017] 2. The present invention discloses a multi-layer composite filter structure, which increases the dust holding capacity. The three-dimensional rhomboid mesh structure of the surface filter cotton layer, the three-dimensional mesh structure of the middle glass fiber layer, and the gradient increase in glass fiber density all provide more deposition space for paint mist particles, thereby increasing the dust holding capacity of the filter. This allows the filter to distribute paint mist particles more evenly during use, reducing the risk of local blockage and further extending the service life of the filter.

[0018] 3. The present invention discloses a multi-layer composite filter structure that extends the replacement cycle. Due to the improved filtration efficiency and increased dust holding capacity, the filter can maintain its filtration performance for a longer period of time during use, thereby extending the replacement cycle; reducing the frequency of filter replacement, reducing the workload of equipment maintenance, and improving production efficiency.

[0019] 4. The multi-layer composite filter structure disclosed in this utility model reduces operating costs and extends the replacement cycle, directly reducing the purchase cost of filters by reducing the number of filter replacements. At the same time, it reduces labor and time costs during the replacement process, further reducing operating costs. It also improves filtration efficiency, reduces coating quality problems and product defects caused by incomplete filtration, thereby improving the product qualification rate and indirectly reducing production costs. Attached Figure Description

[0020] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0021] In the attached diagram:

[0022] Figure 1 This is a front view of a multi-layer composite filter structure according to an embodiment of the present invention;

[0023] Figure 2 This is a left view of a multilayer composite filter structure according to an embodiment of the present invention;

[0024] Figure 3 This is a right view of a multilayer composite filter structure according to an embodiment of the present invention;

[0025] The components represented by the various reference numerals in the diagram are:

[0026] This utility model comprises: 1. a surface filter cotton layer, 2. a middle fiberglass layer, and 3. a bottom fine filter cotton layer. Detailed Implementation

[0027] like Figures 1 to 3 As shown, the multi-layer composite filter structure consists of a surface filter cotton layer 1, a middle glass fiber layer 2, and a bottom fine filter cotton layer 3, which are stacked in sequence.

[0028] The surface filter layer 1 is a three-dimensional diamond-shaped mesh filter cotton with a compression molding process, a basis weight of 350g / ㎡, and a thickness of 20-25mm. This three-dimensional diamond-shaped mesh structure is formed by die-cutting, creating a space within the mesh that can accommodate the deposition of paint mist particles. When dust-laden airflow enters, due to the three-dimensional structure of the diamond mesh, the paint mist particles slide down along the inner wall of the mesh and deposit at the bottom of the space after colliding with the filter cotton surface, achieving efficient interception and further increasing the dust holding effect. At the same time, due to the large internal space of the mesh, even if there is viscous paint mist adhering to the surface, it can still enter the interior through the large gaps without affecting the subsequent filtration effect.

[0029] The middle fiberglass layer 2 is a three-dimensional mesh structure of fiberglass wool with a basis weight of 180g / ㎡ and a thickness of 40-70mm. The fiberglass density increases in a gradient from the air inlet to the air outlet, making the particles more evenly distributed within the layer. The three-dimensional mesh structure formed between the fiberglass filaments can effectively intercept medium-sized paint mist particles.

[0030] The bottom fine filter layer 3 is a G2 grade filter, which is mainly used for deep filtration of fine particles that the first two layers failed to intercept. As the last line of defense, this layer can ensure that the entire filter can effectively filter dusty air and meet the strict air quality requirements of high-end application scenarios such as automotive painting.

[0031] The surface filter cotton layer 1, the middle glass fiber layer 2, and the bottom fine filter cotton layer 3 are fixed together by a special adhesive through overheating and rolling or quilting process to ensure a tight connection between the layers and form a stable overall filtration structure; the special adhesive can be EVA pressure-sensitive hot melt adhesive.

[0032] This multi-layer composite filter structure employs a step-by-step filtration method, making full use of each layer of the filter media. When dust-laden air enters the filter structure, it first passes through the surface filter cotton layer 1, where larger paint mist particles are intercepted by the three-dimensional diamond-shaped mesh structure and deposited at the bottom of the mesh space. Next, medium-sized paint mist particles are intercepted by the three-dimensional mesh structure of the middle fiberglass layer 2. Finally, fine particles are intercepted by the bottom fine filter cotton layer 3. Through the synergistic effect of each layer, filtration is achieved layer by layer from large particles to fine particles, realizing precise interception of paint mist particles in dust-laden air, increasing dust holding capacity, extending service life, and reducing production costs.

[0033] This multi-layer composite filter structure meets the requirements of complex airflow systems and can satisfy filtration needs in different environments. At the same time, it effectively saves energy, and while adapting to different environments, it ensures the adsorption capacity of paint mist particles in the air, resulting in a more significant filtration effect, extending the filter replacement cycle, increasing the service life of individual filters, reducing replacement frequency, and lowering production and operating costs.

Claims

1. A multi-layer composite filter structure, characterized in that, It includes a surface filter cotton layer (1), a middle glass fiber layer (2) and a bottom fine filter cotton layer (3) stacked in sequence; the surface filter cotton layer (1) is a three-dimensional diamond-shaped mesh structure filter cotton formed by compression molding, the middle glass fiber layer (2) is a three-dimensional mesh structure glass fiber cotton, and the bottom fine filter cotton layer (3) is a G2 grade filter cotton.

2. The multi-layer composite filter structure according to claim 1, characterized in that, The surface filter cotton layer (1) has a weight of 350g / ㎡ and a thickness of 20-25mm.

3. A multi-layer composite filter structure according to claim 1 or 2, characterized in that, The three-dimensional rhomboid mesh structure of the surface filter cotton layer (1) is formed by die-cutting process, and a space that can accommodate paint mist particles is formed inside the mesh.

4. The multi-layer composite filter structure according to claim 1, characterized in that, The intermediate fiberglass layer (2) has a basis weight of 180g / ㎡ and a thickness of 40-70mm.

5. A multi-layer composite filter structure according to claim 1 or 4, characterized in that, The intermediate fiberglass layer (2) has a gradient increasing fiberglass density from the air inlet to the air outlet.

6. The multi-layer composite filter structure according to claim 1, characterized in that, The surface filter cotton layer (1), the middle glass fiber layer (2) and the bottom fine filter cotton layer (3) are fixed together by adhesive overheating and rolling or by quilting process.

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