Anti-static dust removal filter bag

Abstract

The utility model provides an anti -static dust -removing filter bag, and the filter bag is made of filter material, and the two opposite surfaces of filter material form the dust -facing surface and the clean gas surface respectively, and the filter material includes metal wire, first fibre layer, base cloth, second fibre layer from the dust -facing surface to the clean gas surface in proper order, and a plurality of metal wires are evenly distributed on the first fibre layer along the longitudinal direction of the dust -facing surface of filter bag, the material of metal wire is one of stainless steel, copper, copper alloy, aluminium, aluminium alloy, nickel, nickel alloy, titanium, titanium alloy and iron chromium aluminium alloy, the filter bag of the utility model has the direct effect of conductive metal between filter material and dust, and the metal wire of different material and quantity can be replaced at any time according to the required conductive quantity, and the utility model has more excellent conductive effect.

Description

Technical Field

[0001] This utility model relates to the field of filter materials, and more specifically to an antistatic dust removal filter bag. Background Technology

[0002] Electrostatic sparks are the leading cause of fires and explosions in baghouse dust collectors. Filter bags are mostly insulators, as are dust particles. However, static electricity is generated through friction between the filter media and the dust / airflow. If the filter media lacks conductivity, this static electricity cannot be eliminated promptly, leading to anything from filter bag damage and failure to, in severe cases, fires or even explosions, compromising safe production. Therefore, it is essential to study the electrostatic properties of the filter media during the use of baghouse dust collectors to reduce the generation of electrostatic sparks and ensure safe operation.

[0003] Currently, there are two main methods for incorporating conductive fibers into antistatic filter media: one is to add conductive yarn to the base fabric; the other is to add conductive fibers to the fiber layer. Adding conductive yarn to the base fabric, however, only provides conductivity within the base fabric and is generally insufficient for applications requiring high conductivity. Adding conductive fibers to the fiber layer, on the other hand, may result in uneven distribution of the conductive fibers, affecting conductivity.

[0004] In view of this, the designer has deeply conceived and actively researched and improved the design of the above-mentioned antistatic filter material, which has many shortcomings and inconveniences caused by the imperfections in its structural design, and developed this creation. Utility Model Content

[0005] The purpose of this invention is to provide a novel antistatic dust removal filter bag in which conductive metal acts directly between the filter material and the dust, thereby achieving a superior conductivity effect.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] An antistatic dust removal filter bag is made of filter material. The two opposite sides of the filter material form a dust-facing surface and a clean air surface, respectively. The filter material includes, from the dust-facing surface to the clean air surface, the following components in sequence: metal wires, a first fiber layer, a base fabric, and a second fiber layer. Multiple metal wires are evenly distributed longitudinally on the first fiber layer along the dust-facing surface of the filter bag.

[0008] Furthermore, the metal wire is made of one of the following materials: stainless steel, copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or iron-chromium-aluminum alloy.

[0009] Furthermore, the diameter of the metal wire is 0.1mm-0.5mm, and the horizontal spacing between adjacent metal wires is 1cm-5cm.

[0010] Furthermore, the fiber materials of the first fiber layer and the second fiber layer are one or more blends of polyester fiber, homopolymer polyacrylonitrile fiber, polyphenylene sulfide fiber, aromatic polyamide fiber, aramid fiber, polyimide fiber, polytetrafluoroethylene fiber, polyaryloxadiazole fiber, glass fiber, or basalt fiber.

[0011] Furthermore, the basis weight of the first and second fiber layers is 150 g / m². 2 -350g / m 2 .

[0012] Furthermore, the first fiber layer and the second fiber layer are made of the same material.

[0013] Furthermore, the base fabric is made of one or more of the following materials: polyester fiber, homopolymer polyacrylonitrile fiber, polyphenylene sulfide fiber, aromatic polyamide fiber, aramid fiber, polyimide fiber, polytetrafluoroethylene fiber, polyarylate fiber, glass fiber, or basalt fiber.

[0014] Furthermore, the base fabric has a basis weight of 80 g / m². 2 -450g / m 2 .

[0015] Furthermore, the filter bag includes a bag head, a bag body, and a bag bottom. The filter media in the bag head and bag bottom do not have metal wires, while the metal wires in the bag body are longitudinally and evenly distributed on the first fiber layer and located between the bag head and bag tail.

[0016] Furthermore, the metal wire and the first fiber layer constitute the dust-receiving surface layer, and the second fiber layer constitutes the air-purifying surface layer. The metal wire is sewn and fixed onto the first fiber layer by PTFE sewing thread.

[0017] With the above structure, the filter bag of this utility model adds a certain amount of conductive metal wires to the dust-facing surface during bag making, so that the conductive metal wires act directly between the filter material and the dust. Different materials and quantities of metal wires can be replaced at any time according to the required conductivity to achieve the best conductivity effect. In addition, the filter bag of this utility model has high overall mechanical strength, long service life, uniform conductivity, and good antistatic properties. It is suitable for textile filter materials of all materials, the preparation method is simple, the materials are readily available, and it is suitable for widespread application. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the layer structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model (top view of the dust-facing side).

[0020] Label Explanation:

[0021] 1. Metal wire; 21. First fiber layer; 22. Second limiting layer;

[0022] 3. Base fabric; A. Bag head; B. Bag body; C. Bag tail. Detailed Implementation

[0023] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0024] Combination Figure 1 , Figure 2 As shown, this utility model discloses an antistatic dust collector filter bag. The filter bag is made of filter material, with two opposite surfaces forming a dust-facing surface and a clean air surface, respectively. The filter material, from the dust-facing surface to the clean air surface, sequentially includes metal wires 1, a first fiber layer 21, a base fabric 3, and a second fiber layer 22. Multiple metal wires 1 are evenly distributed longitudinally along the dust-facing surface of the filter bag on the first fiber layer 21, and can be evenly spaced throughout the entire first fiber layer 21. The metal wires 1 and the first fiber layer 21 constitute the dust-facing surface layer, and the second fiber layer 22 constitutes the clean air surface layer. Multiple metal wires 1 can be sewn and fixed to the first fiber layer 21 using PTFE sewing thread, forming a conductive layer on the first fiber layer 21. This conductive layer can be configured with different materials and quantities of metal wires according to the required conductivity, resulting in superior conductivity.

[0025] Specifically, the material of metal wire 1 can be one of stainless steel, copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or iron-chromium-aluminum alloy. The diameter of metal wire 1 is 0.1mm-0.5mm, and the horizontal spacing between adjacent metal wires 1 is 1cm-5cm.

[0026] The fiber materials of the first fiber layer 21 and the second fiber layer 21 may be one or more of the following: polyester (PE) fiber, homopolymer acrylonitrile (DT) fiber, polyphenylene sulfide (PPS) fiber, aromatic polyamide (MX) fiber, aramid sulfone (PSA) fiber, polyimide (PI) fiber, polytetrafluoroethylene (PTFE) fiber, polyarylene diazole (POD) fiber, glass (GL) fiber, or basalt (BAS) fiber.

[0027] The materials of the first fiber layer 21 and the second fiber layer 22 can be the same or different. The basis weight of the first fiber layer 21 and the second fiber layer 22 can be 150 g / m². 2 -350g / m 2 .

[0028] The base fabric 3 can be made of one or more of the following: polyester (PE) fiber, homopolymer acrylonitrile (DT) fiber, polyphenylene sulfide (PPS) fiber, aromatic polyamide (MX) fiber, aramid sulfone (PSA) fiber, polyimide (PI) fiber, polytetrafluoroethylene (PTFE) fiber, poly(aryloxadiazole) (POD) fiber, glass (GL) fiber, or basalt (BAS) fiber, or a blend of two or more of them, and the basis weight of the base fabric 3 is 80 g / m². 2 -450g / m 2 .

[0029] Combination Figure 2 As shown, the filter bag may include a bag head A, a bag body B, and a bag bottom C. The filter media in the bag head A, bag body B, and bag bottom C may not have metal wires. The metal wires 1 in the bag body B are evenly distributed longitudinally on the first fiber layer 21 and located between the bag head A and the bag bottom C. The metal wires 1 may be evenly distributed on the circumferential surface of the bag body.

[0030] After adopting the above solution, the present invention has the following effects:

[0031] 1. Because conductive metal wires are installed on the dust-facing surface of the filter bag, there are approximately 10 metal wires per cubic centimeter. 22 With a free electron count far exceeding that of other materials, and the metal wire acting directly between the filter bag and the dust, static electricity can be quickly discharged, preventing its accumulation on the filter bag surface. Therefore, the filter bag of this invention has excellent and uniform conductivity, resulting in superior antistatic performance.

[0032] 2. Since this utility model is applicable to textile filter materials of all materials, the filter bag of this utility model is suitable for low temperature and high temperature dust removal fields.

[0033] 3. Because the layer structure of this utility model is simple, the preparation method is simple, the materials are readily available, and it is suitable for widespread application.

[0034] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. An antistatic dust collector filter bag, wherein the filter bag is made of filter material, and the two opposite surfaces of the filter material respectively form a dust-attracting surface and a clean air surface, characterized in that: The filter media consists of, from the dust-facing side to the clean air-facing side, the following components in sequence: metal wires, a first fiber layer, a base fabric, and a second fiber layer. Multiple metal wires are evenly distributed longitudinally along the dust-facing side of the filter bag on the first fiber layer.

2. The antistatic dust removal filter bag as described in claim 1, characterized in that: The metal wire is made of one of the following materials: stainless steel, copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or iron-chromium-aluminum alloy.

3. The antistatic dust removal filter bag as described in claim 1 or 2, characterized in that: The diameter of the metal wire is 0.1mm-0.5mm, and the horizontal spacing between adjacent metal wires is 1cm-5cm.

4. The antistatic dust removal filter bag as described in claim 1, characterized in that: The first and second fiber layers are made of one of the following materials: polyester fiber, homopolymer acrylonitrile fiber, polyphenylene sulfide fiber, aromatic polyamide fiber, aramid fiber, polyimide fiber, polytetrafluoroethylene fiber, polyarylate fiber, glass fiber, or basalt fiber.

5. The antistatic dust removal filter bag as described in claim 1, characterized in that: The basis weight of the first and second fiber layers is 150 g / m². 2 -350g / m 2 .

6. An antistatic dust removal filter bag as described in claim 1, 4, or 5, characterized in that: The first and second fiber layers are made of the same material.

7. The antistatic dust removal filter bag as described in claim 1, characterized in that: The base fabric is made of one of the following materials: polyester fiber, homopolymer polyacrylonitrile fiber, polyphenylene sulfide fiber, aromatic polyamide fiber, aramid fiber, polyimide fiber, polytetrafluoroethylene fiber, polyarylate fiber, glass fiber, or basalt fiber.

8. An antistatic dust removal filter bag as described in claim 1 or 7, characterized in that: The base fabric has a basis weight of 80 g / m². 2 -450g / m 2 .

9. An antistatic dust removal filter bag as described in claim 1 or 2, characterized in that: The filter bag includes a bag head, a bag body, and a bag bottom. The filter media in the bag head and bag bottom do not have metal wires, while the metal wires in the bag body are evenly distributed longitudinally on the first fiber layer and located between the bag head and bag tail.

10. An antistatic dust removal filter bag as described in claim 1 or 2, characterized in that: The metal wire and the first fiber layer constitute the dust-receiving surface layer, and the second fiber layer constitutes the air-purifying surface layer. The metal wire is sewn and fixed to the first fiber layer by PTFE sewing thread.

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