Composite screen cloth capable of improving dust holding capacity and filter

Abstract

The invention provides composite screen cloth capable of improving dust holding capacity and a filter, the composite screen cloth comprises a plurality of material layers formed by ultrasonic welding and compounding, and the material layers comprise an extrusion molding screen layer, a first anti-sticking cotton layer, a PET acupuncture cotton layer, a melt-blowing material layer and a second anti-sticking cotton layer in sequence in the filtering direction. According to the composite screen cloth, through accurate design and compounding of multiple layers of materials, the filtering precision of 30 microns can be achieved, impurities and particulate matter in fuel oil can be effectively filtered out, and normal operation of a fuel oil pump system is ensured. The filtering precision not only can meet the requirement of primary filtering of a traditional fuel pump, but also can continuously keep a high filtering effect under different working conditions.

Description

Technical Field

[0001] The present invention belongs to the technical field of filtration, and particularly relates to a composite mesh cloth and a filter capable of improving dust holding capacity. Background Art

[0002] In the modern automotive industry, the performance of the primary filter media for fuel pumps plays a crucial role in fuel filtration efficiency and system lifespan. The filtration materials in the prior art usually suffer from problems such as uneven thickness, insufficient filtration accuracy, or poor durability, and cannot meet the requirements of efficient filtration and long-term use.

[0003] Therefore, developing a composite mesh cloth with high precision, high strength, and good comprehensive performance has become an important research direction in the industry. Summary of the Invention

[0004] The purpose of the present invention is to provide a composite mesh cloth and a filter capable of improving dust holding capacity, which can improve filtration performance and mechanical properties.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A composite mesh cloth capable of improving dust holding capacity, comprising a plurality of material layers compounded by ultrasonic welding. The material layers are, in the filtration direction, an extruded mesh layer, a first anti-sticking cotton layer, a PET needle-punched cotton layer, a melt-blown material layer, and a second anti-sticking cotton layer in sequence.

[0006] Further, the specification of the extruded mesh layer is NO2015_60PA-NAT@44.5”; 1000’, and its thickness is 0.02 mm.

[0007] Further, the thickness of the PET needle-punched cotton layer is 1.42 mm and the grammage is 200 g / m 2 .

[0008] Further, the specification of the melt-blown material layer is PP PCN05040C50 / T, its thickness is 0.47 mm, and its fiber diameter is from 1 μm to 5 μm.

[0009] Further, the specifications of both the first anti-sticking cotton layer and the second anti-sticking cotton layer are PP SLS-PP25, and their thicknesses are both 0.16 mm.

[0010] Further, the diameter of the welding points of the ultrasonic welding is 1.4 mm, the thickness is 0.2 mm, and the point spacing is 15.5 mm.

[0011] The present invention also provides a filter, comprising a body and a filter mesh cloth disposed on the body. The filter mesh cloth is the above-mentioned composite mesh cloth capable of improving dust holding capacity.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. The composite mesh of the present invention can achieve a filtration accuracy of 30 μm through precise design and the combination of multiple layers of materials. It can effectively filter impurities and particulate matter in fuel, ensuring the normal operation of the fuel pump system. This filtration accuracy not only meets the requirements of the primary filtration of traditional fuel pumps but also maintains a high filtration effect under different working conditions.

[0013] 2. The present invention uses a multi-layer composite material (including extruded mesh, anti-sticking cotton, PET needle-punched cotton, and melt-blown material). Each layer of the material has high strength, pressure resistance, and abrasion resistance, thus greatly improving the compressive and tensile strength and service life of the mesh. Even during long-term use, the composite mesh can maintain a stable structure and performance, reducing the need for frequent filter material replacement and lowering maintenance costs.

[0014] 3. The composite mesh of the present invention has good high-temperature resistance and corrosion resistance, adapting to the temperature and chemical media in different working environments. For example, the first layer of extruded mesh uses high-temperature-resistant polyamide material, which can withstand the challenge of high-temperature fuel and avoid material aging and performance degradation caused by high temperature.

[0015] 4. The present invention combines 5 layers of materials through ultrasonic welding technology. The diameter, thickness, and spacing of the welding points are precisely designed to ensure the structural stability and firm interlayer bonding of the composite mesh. Ultrasonic welding avoids problems such as adhesive shedding and suture breakage that may occur in traditional bonding or stitching technologies, improving the stability and service life of the filter material.

[0016] 5. In addition to being widely used in the primary filtration of fuel pumps, the composite mesh of the present invention can also be applied to multiple fields such as liquid filtration, air purification, and industrial dust removal. Its multi-layer structure and high-efficiency filtration performance enable it to adapt to different types of liquid or gas filtration requirements, having strong market competitiveness.

[0017] 6. The composite mesh of the present invention simplifies the production process by using ultrasonic welding technology to efficiently combine multiple layers of materials. The production process is stable and has high production efficiency. Compared with traditional filter materials, the composite mesh of the present invention has a lower production cost, is suitable for large-scale production, and meets the market demand for high-cost-effective filter materials.

[0018] 7. All kinds of materials used in the present invention are environmentally friendly materials, such as polyamide, polypropylene, and PET, etc., meeting international environmental protection standards. Moreover, the composite mesh does not produce harmful substances during use, meeting the increasingly strict environmental protection requirements of the automotive industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment 1: As Figure 1 shown, this embodiment provides a composite mesh fabric capable of improving dust holding capacity, including a plurality of material layers compounded by ultrasonic welding. The material layers are, in the filtration direction, an extruded mesh layer 1, a first anti-sticking cotton layer 2, a PET needled cotton layer 3, a meltblown material layer 4, and a second anti-sticking cotton layer 5 in sequence.

[0022] As a preferred example, the specification of the extruded mesh layer 1 is NO2015_60PA-NAT@44.5”; 1000’, and its thickness is 0.02 mm. The extruded mesh layer 1 has high-temperature resistance and can improve the service performance of the composite mesh fabric in a high-temperature environment.

[0023] As a preferred example, the thickness of the PET needled cotton layer 3 is 1.42 mm and the grammage is 200 g / m 2 . The PET needled cotton layer 3 can enhance the strength and durability of the mesh fabric.

[0024] As a preferred example, the specification of the meltblown material layer 4 is PP PCN05040C50 / T, its thickness is 0.47 mm, and its fiber diameter is from 1 μm to 5 μm. The meltblown material layer 4 can further improve the balance between filtration accuracy and resistance performance.

[0025] As a preferred example, the specifications of both the first anti-sticking cotton layer 2 and the second anti-sticking cotton layer 5 are PP SLS-PP25, and their thicknesses are both 0.16 mm.

[0026] As a preferred example, the diameter of the welding point of the ultrasonic welding is 1.4 mm, the thickness is 0.2 mm, and the point spacing is 15.5 mm.

[0027] The composite mesh fabric (weight 420 +25 g / m 2 , thickness 2.9 +0.25 mm) in this embodiment has the following advantages compared with the prior art after two tests:

[0028] It can be seen that the composite mesh fabric in the present invention has improved filtration efficiency and dust holding capacity compared with the existing mesh fabric.

[0029] Embodiment 2: The present invention also provides a filter, which includes a body and a filter mesh disposed on the body, and the filter mesh is a composite mesh capable of improving dust holding capacity as described above.

[0030] Those parts not detailed in the present invention are all well-known technologies to those skilled in the art.

[0031] It should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A composite mesh fabric capable of improving dust holding capacity, characterized in that: It includes several material layers formed by ultrasonic welding. The material layers are, in the filtration direction, an extruded mesh layer (1), a first anti-sticking cotton layer (2), a PET needle-punched cotton layer (3), a melt-blown material layer (4), and a second anti-sticking cotton layer (5) in sequence.

2. The composite mesh fabric capable of improving dust holding capacity according to claim 1, characterized in that: The specification of the extruded mesh layer (1) is NO2015_60PA-NAT@44.5”;1000’, and its thickness is 0.02 mm.

3. The composite mesh fabric capable of improving dust holding capacity according to claim 1, wherein: The thickness of the PET needled cotton layer (3) is 1.42 mm and the grammage is 200 g / m 2 .

4. The composite mesh fabric capable of improving dust holding capacity according to claim 1, characterized in that: The specification of the melt-blown material layer (4) is PP PCN05040C50 / T, its thickness is 0.47 mm, and its fiber diameter is 1 μm to 5 μm.

5. The composite mesh fabric capable of improving dust holding capacity according to claim 1, wherein: The specifications of the first anti-sticking cotton layer (2) and the second anti-sticking cotton layer (5) are both PP SLS-PP25, and their thicknesses are both 0.16 mm.

6. The composite mesh fabric capable of improving dust holding capacity according to claim 1, wherein: The diameter of the welding point of the ultrasonic welding is 1.4 mm, the thickness is 0.2 mm, and the point spacing is 15.5 mm.

7. A filter, comprising a body and a filter mesh cloth disposed on the body, characterized in that: The filter mesh cloth is a composite mesh cloth capable of improving dust holding capacity according to any one of claims 1 to 6.

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