Sine wave-shaped fold type filter cotton

Abstract

The utility model relates to the technical field of respirator protective articles, in particular to sine wave-shaped fold type filter cotton which comprises filter cotton which is divided into a first primary filter layer, a second primary filter layer, a medium-efficiency filter layer and a high-efficiency filter layer. The filter cotton is specifically arranged to be of a sine-wave-shaped fold type structure, and a filter cotton forming sealing edge is arranged on the outer side of the sine-wave-shaped fold type structure. According to the utility model, the sine wave-shaped fold type filter cotton is arranged, and the sine wave-shaped fold type filter cotton has a larger effective filtering area, so that the filtering efficiency is improved, and compared with plane type filter cotton, more filtering materials can be accommodated in the same space, so that the filtering surface area is increased, and the filtering efficiency is improved; moreover, the sine wave-shaped fold type filter cotton is large in filter area and low in blocking speed, so that the service life of the filter cotton can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of respirator protective equipment, in particular to a sinusoidal wave pleated filter cotton. Background Art

[0002] Filter cotton is a kind of filter element used in respiratory protective equipment. The working principle of filter cotton is mainly to intercept impurities, dust, bacteria and other particles in the air through its special material and structure, thereby purifying the air. Based on the common structure filter cotton on the current market, the filtration area is limited by the area of ​​the filter cotton bin, the ductility is poor, it is easy to deform, the dust holding capacity is small, and the service life is short.

[0003] Therefore, those skilled in the art provide a sinusoidal wave pleated filter cotton to solve the problems raised in the above background technology. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a sinusoidal wave pleated filter cotton, including filter cotton, the filter cotton is divided into a primary filter layer 1, a primary filter layer 2, a medium filter layer and a high efficiency filter layer;

[0005] The filter cotton is specifically configured as a sinusoidal wave pleated structure, and a filter cotton forming edge sealing is configured on the outer side of the sinusoidal wave pleated structure.

[0006] Preferably: the primary filter layer 1 is the first layer, which is composed of SSS-grade polypropylene spunbond non-woven fabric, and the bottom of the primary filter layer 1 is the primary filter layer 2, which is composed of electrostatic nanofiber cloth. The bottom of the primary filter layer 2 is the third layer and the fourth layer, which are respectively set as the medium-efficiency filter layer and the high-efficiency filter layer. The medium-efficiency filter layer is set to be composed of melt-blown activated carbon cloth, and the high-efficiency filter layer is set to be composed of electret melt-blown cloth. The electrostatic nanofiber cloth is a material formed by combining nanofibers and non-woven fabrics by electrostatic spinning. The medium-efficiency filter layer, the melt-blown activated carbon cloth can be selected to be 50-150 grams.

[0007] Preferably: the meltblown activated carbon cloth is a material combining meltblown non-woven fabric and activated carbon powder, the high-efficiency filter layer is also the core filter layer, the electret meltblown cloth can be selected to be 70-100 grams, and its filtration efficiency can reach 99.9%, which is much higher than that of ordinary meltblown cloth. It is an ultra-fine electrostatic fiber cloth with a fiber diameter of 1 to 5 microns.

[0008] Technical effects and advantages of the utility model:

[0009] 1. The utility model provides a sinusoidal wave pleated filter cotton. Since the sinusoidal wave pleated filter cotton has a larger effective filtering area, the filtering efficiency is improved. Compared with the flat filter cotton, more filter materials can be accommodated in the same space, thereby increasing the filtering surface area and improving the filtering efficiency. In addition, the sinusoidal wave pleated filter cotton has a larger filtering area and a slower clogging speed, so the service life of the filter cotton can be extended.

[0010] 2. The utility model can increase the filter surface area and reduce the resistance of the filter cotton by setting the sinusoidal wave pleated filter cotton design. Compared with the flat filter cotton, the sinusoidal wave pleated filter cotton has a smaller pressure drop, which can reduce the resistance of the fluid passing through the filter cotton, thereby reducing energy consumption and operating costs.

[0011] 3. The utility model has a practical structure, strong tensile strength and ductility, and can expand the surface area of ​​the filter cotton, increase the filtering efficiency, and can accommodate more pollutants, thereby extending the service life of the filter cotton and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a sinusoidal pleated filter cotton provided in the embodiment of the present application. Figure 1 ;

[0013] Figure 2 It is a structural schematic diagram of the sine wave pleated structure of the filter cotton and the filter cotton forming and sealing edge in a sine wave pleated filter cotton provided in an embodiment of the present application.

[0014] In the figure: 1. Primary filter layer 1; 2. Primary filter layer 2; 3. Medium filter layer; 4. High efficiency filter layer; 11. Sine wave pleated structure of filter cotton; 12. Filter cotton molding and edge sealing. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0016] Example 1

[0017] See also Figures 1-2In this embodiment, a sinusoidal pleated filter cotton is provided, including filter cotton, which is divided into a primary filter layer 1, a primary filter layer 2, a medium-efficiency filter layer 3 and a high-efficiency filter layer 4, wherein the primary filter layer 1 is the first layer, which is composed of sss-grade polypropylene spunbond non-woven fabric, the bottom of the primary filter layer 1 is the primary filter layer 2, which is composed of electrostatic nanofiber cloth, the bottom of the primary filter layer 2 is the third layer and the fourth layer, which are respectively set as the medium-efficiency filter layer 3 and the high-efficiency filter layer 4, the medium-efficiency filter layer 3 is set as a melt-blown activated carbon cloth material, and the high-efficiency filter layer 4 is set as an electret melt-blown cloth material;

[0018] By setting all the primary filter layer 1, the primary filter layer 2, the medium filter layer 3 and the high efficiency filter layer 4, different filter materials are stacked and compounded together in layers, positioned in a forming mold, and punched, bonded and integrally formed by ultrasonic equipment;

[0019] The primary filter layer 1, the first layer can be selected from 15-30 grams of SSS-grade polypropylene spunbond non-woven fabric, and the second layer can be selected from 150-200 grams of electrostatic nanofiber cloth. Electrostatic nanofiber is a material formed by combining nanofiber and non-woven fabric by electrostatic spinning. It has good filtering properties, air permeability and dust holding capacity, and is waterproof, dustproof, oil-proof and wear-resistant. The two layers of filter materials are superimposed to form a primary filter layer to filter large particles of dust;

[0020] The filter cotton is specifically configured as a sinusoidal pleated structure 11, and a filter cotton forming sealing edge 12 is configured on the outer side of the sinusoidal pleated structure 11;

[0021] The medium-efficiency filter layer 3, the melt-blown activated carbon cloth can be selected to be 50-150 grams;

[0022] Melt-blown activated carbon cloth is a material that combines melt-blown non-woven fabric and activated carbon powder, contains a high proportion of activated carbon, and can effectively absorb toxic and harmful gases and odors in the air. The medium-efficiency filter layer 3 can select the corresponding protective filter medium according to the working environment and harmful gases;

[0023] The high-efficiency filter layer 4 is also the core filter layer. The electret melt-blown cloth can be selected to be 70-100 grams, and its filtration efficiency can reach 99.9%, which is much higher than that of ordinary melt-blown cloth. It is an ultra-fine electrostatic fiber cloth with a fiber diameter of 1 to 5 microns, many gaps, fluffy structure, good anti-wrinkle ability, and ultra-fine fibers with unique capillary structure to absorb fine particles;

[0024] When in use, the above-mentioned filter layers are arranged in order from low to high, stacked and compounded, and positioned in a mold (the inner cavity of the mold is a sine wave pleated structure). The filter cotton is punched and shaped by an ultrasonic forming machine. The overall structure of the sinusoidal wave pleated filter cotton is designed to be a sinusoidal wave pleated structure 11. The filter cotton filter layer is composed of multiple layers of different filter fiber materials stacked together, and it can be punched and shaped by a mold and an ultrasonic forming machine.

[0025] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A sinusoidal wave pleated filter cotton, comprising filter cotton, characterized in that: The filter cotton is divided into a primary filter layer 1 (1), a primary filter layer 2 (2), a medium filter layer (3) and a high efficiency filter layer (4); The filter cotton is specifically configured as a sinusoidal wave pleated structure (11), and a filter cotton forming sealing edge (12) is provided on the outer side of the sinusoidal wave pleated structure (11).

2. The sinusoidal wave pleated filter cotton according to claim 1, characterized in that: The primary filter layer 1 (1) is the first layer, which is made of SSS-grade polypropylene spunbond non-woven fabric. The bottom of the primary filter layer 1 (1) is the primary filter layer 2 (2), which is made of electrostatic nanofiber cloth.

3. The sinusoidal wave pleated filter cotton according to claim 2, characterized in that: The bottom of the primary filter layer 2 (2) is a third layer and a fourth layer which are respectively arranged as a medium-efficiency filter layer (3) and a high-efficiency filter layer (4); the medium-efficiency filter layer (3) is arranged to be composed of a melt-blown activated carbon cloth material, and the high-efficiency filter layer (4) is arranged to be composed of an electret melt-blown cloth material.

4. The sinusoidal wave pleated filter cotton according to claim 2, characterized in that: The electrostatic nanofiber cloth is a material formed by combining nanofibers and non-woven fabrics through an electrostatic spinning method.

5. The sinusoidal wave pleated filter cotton according to claim 3, characterized in that: The medium-efficiency filter layer (3) may be made of melt-blown activated carbon cloth weighing 50-150 grams.

6. The sinusoidal wave pleated filter cotton according to claim 1, characterized in that: The high-efficiency filter layer (4), which is also the core filter layer, can be made of 70-100 grams of electret meltblown cloth, and its filtration efficiency can reach 99.9%, which is much higher than that of ordinary meltblown cloth. It is an ultra-fine electrostatic fiber cloth with a fiber diameter of 1 to 5 microns.

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