High-temperature-resistant film-coated composite filter bag

Abstract

The utility model discloses a high temperature resistant film composite filter bag, which relates to the technical field of filter bags and comprises a filter bag base body, the filter bag base body is mounted on the inner side of a mounting plate, high temperature resistant layers are coated on the inner side and the outer side of the filter bag base body, and a wear resistant layer is arranged on the inner layer of the high temperature resistant layer on the inner side. A waterproof and oil-proof layer is arranged on the outer layer of the high-temperature-resistant layer on the outer side, an anti-static layer is arranged on the outer layer of the waterproof and oil-proof layer, and the anti-static layer is sleeved with a flame-retardant layer. The high-temperature-resistant layer is arranged, the inner layer and the outer layer of the filter bag base body are coated with the polytetrafluoroethylene material, the filter bag coated with the polytetrafluoroethylene film can intercept micron-sized fine dust, has a good filtering effect and still keeps certain air permeability, so that the filter bag can keep low pressure difference in the filtering process, and the filtering effect is good. The polytetrafluoroethylene also has excellent high temperature resistance and chemical stability, so that the filter bag is not easy to age and deform in a long-term use process, and the service life of the filter bag is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of filter bags, in particular to a high-temperature resistant film-coated composite filter bag. Background Art

[0002] A filter bag is a filtering device specifically used for filtering solid particles, liquid suspensions, etc. It is usually in the shape of a bag and is made of fiber materials. It is widely used in chemical, pharmaceutical, food and other industries, such as water treatment, petroleum, chemical, ink, coating, pharmaceutical, food, beverage, metal processing and other fields. With the rapid development of society, industrialization has received more attention, the application fields of filter bags are becoming more and more extensive, and the working environment of filter bags is also more diverse. This requires filter bags to adapt to more harsh environments. There are many modern industries that require filter bags to have high-temperature resistance. Therefore, based on this situation, a high-temperature resistant film-coated composite filter bag is proposed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a high-temperature resistant film-coated composite filter bag to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A high-temperature resistant film-coated composite filter bag, including a filter bag matrix, the filter bag matrix is installed inside the mounting plate, high-temperature resistant layers are coated on both the inner and outer sides of the filter bag matrix, a wear-resistant layer is provided on the inner layer of the high-temperature resistant layer on the inner side, a waterproof and oil-proof layer is provided on the outer layer of the high-temperature resistant layer on the outer side, an antistatic layer is provided on the outer layer of the waterproof and oil-proof layer, and a flame-retardant layer is sleeved on the outer layer of the antistatic layer.

[0005] Preferably, the filter bag matrix is made of nylon material.

[0006] Preferably, the high-temperature resistant layer is coated on the inner and outer layers of the filter bag matrix using polytetrafluoroethylene material.

[0007] Preferably, the waterproof and oil-proof layer is coated on the surface of the high-temperature resistant layer on the outer layer using a PVC coating.

[0008] Preferably, the antistatic layer is coated on the outer side of the waterproof and oil-proof layer using a conductive material.

[0009] Preferably, the flame-retardant layer is made of aramid fiber and is separately provided and sleeved on the outer layer of the antistatic layer.

[0010] Preferably, the wear-resistant layer is coated using PU material.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. A high-temperature resistant film-coated composite filter bag provided by the present utility model is provided with a high-temperature resistant layer. Polytetrafluoroethylene material is coated on the inner and outer layers of the filter bag matrix. The filter bag with polytetrafluoroethylene film coating can intercept fine dust at the micron level, has a good filtering effect, and still maintains a certain air permeability, enabling the filter bag to maintain a low pressure difference during the filtering process. Polytetrafluoroethylene also has excellent high-temperature resistance and chemical stability, making the filter bag not easy to age and deform during long-term use, and extending the service life of the filter bag.

[0013] 2. A high-temperature resistant film-coated composite filter bag provided by the present utility model is provided with a flame retardant layer. The flame retardant layer made of aramid fiber is separately arranged and sleeved on the outer layer of the antistatic layer. Aramid fiber is a synthetic fiber with high strength, high modulus, and high-temperature resistance, and has excellent flame retardant performance. And setting the flame retardant layer in the form of an independent sleeve can flexibly replace the flame retardant layer without affecting the filter bag itself. If the flame retardant layer is damaged, it can be repaired or replaced separately, reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a high-temperature resistant film-coated composite filter bag of the present utility model;

[0015] Figure 2 It is a top view sectional view of a high-temperature resistant film-coated composite filter bag of the present utility model.

[0016] In the figure: 1. Filter bag matrix; 2. Mounting plate; 3. High-temperature resistant layer; 4. Waterproof and oil-proof layer; 5. Antistatic layer; 6. Flame retardant layer; 7. Wear-resistant layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0018] To further understand the content of the present utility model, the present utility model will be described in detail in conjunction with the accompanying drawings.

[0019] Combined with Figure 1 - Figure 2 , a high-temperature resistant film-coated composite filter bag of the present utility model includes a filter bag matrix 1. The filter bag matrix 1 is installed inside the mounting plate 2. High-temperature resistant layers 3 are coated on both the inner and outer sides of the filter bag matrix 1. A wear-resistant layer 7 is provided inside the high-temperature resistant layer 3 on the inner side, and a waterproof and oil-proof layer 4 is provided outside the high-temperature resistant layer 3 on the outer side. An antistatic layer 5 is provided outside the waterproof and oil-proof layer 4, and a flame retardant layer 6 is sleeved outside the antistatic layer 5.

[0020] Specifically, the installation plate 2 is used to install the filter bag substrate 1, reducing the disassembly and installation steps during the use of the filter bag, thereby improving the work efficiency of disassembly, installation, maintenance, and repair. Through a special process, the surface of the filter bag is coated with a film, further enhancing the high-temperature resistance performance and filtration effect of the filter bag. The service life of the filter bag is significantly extended, reducing the replacement frequency and maintenance cost.

[0021] Combined Figure 2 , the filter bag substrate 1 is made of nylon material. The nylon material has excellent toughness, enabling the filter bag to maintain stable filtration performance during long-term use, with a relatively long service life, reducing the frequency and cost of replacing the filter bag.

[0022] The high-temperature resistant layer 3 is coated on the inner and outer layers of the filter bag substrate 1 with polytetrafluoroethylene material. The filter bag with a polytetrafluoroethylene coating can intercept fine dust at the micron level, having a good filtration effect, and excellent high-temperature resistance and chemical stability, making the filter bag not easily age or deform during long-term use, extending the service life of the filter bag. Although the PTFE coating has excellent filtration performance, it still maintains a certain air permeability, enabling the filter bag to maintain a relatively low pressure difference during the filtration process.

[0023] Combined Figure 2 , the waterproof and oil-proof layer 4 is coated on the surface of the outer high-temperature resistant layer 3 with a PVC coating. The PVC coating has good waterproof and oil-proof performance, effectively preventing the penetration of moisture and oil. At the same time, the PVC coating also has a certain temperature resistance and chemical corrosion resistance.

[0024] The antistatic layer 5 is coated on the outside of the waterproof and oil-proof layer 4 with a conductive material. The conductive coating can be coated on the surface of the filter bag to form a conductive layer to achieve antistatic performance. The accumulation of static charges on the surface of the filter bag may cause spark discharge, which may trigger a fire or explosion. The antistatic layer 5 can effectively reduce the accumulation of static charges on the surface of the filter bag, improving work safety, and can effectively reduce the adhesion of dust on the surface of the filter bag, thereby improving the dust removal efficiency.

[0025] The flame retardant layer 6 is made of aramid fiber. The flame retardant layer 6 is separately set and sleeved on the outer layer of the antistatic layer 5. Aramid fiber is a synthetic fiber with high strength, high modulus, and high temperature resistance, having excellent flame retardant performance. And setting the flame retardant layer 6 in an independent sleeved form can flexibly replace the flame retardant layer 6 without affecting the filter bag itself. If the flame retardant layer 6 is damaged, it can be repaired or replaced separately, reducing the maintenance cost.

[0026] The wear-resistant layer 7 is coated with a PU material. The wear-resistant layer 7 is coated on the inner layer of the inner high-temperature resistant layer 3, that is, the filtration side, which can effectively improve the performance and life of the filter bag. The PU coating can provide good wear resistance and impact resistance, effectively improving the wear resistance of the filter bag.

[0027] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant film-coated composite filter bag, comprising a filter bag substrate (1), characterized in that: The filter bag base (1) is mounted on the inner side of the mounting plate (2); the inner and outer sides of the filter bag base (1) are coated with a high temperature resistant layer (3); the inner layer of the high temperature resistant layer (3) on the inner side is provided with a wear-resistant layer (7); the outer layer of the high temperature resistant layer (3) on the outer side is provided with a waterproof and oil-proof layer (4); the outer layer of the waterproof and oil-proof layer (4) is provided with an antistatic layer (5); and the outer layer of the antistatic layer (5) is provided with a flame retardant layer (6).

2. The high temperature resistant film-coated composite filter bag according to claim 1, characterized in that: The filter bag base (1) is made of nylon material.

3. The high temperature resistant film-coated composite filter bag according to claim 1, characterized in that: The high temperature resistant layer (3) is made of polytetrafluoroethylene material and is coated on the inner and outer layers of the filter bag substrate (1).

4. The high temperature resistant film-coated composite filter bag according to claim 1, characterized in that: The waterproof and oil-proof layer (4) is coated on the surface of the outer high-temperature resistant layer (3) using PVC.

5. The high temperature resistant film-coated composite filter bag according to claim 1, characterized in that: The antistatic layer (5) is coated on the outer side of the waterproof and oil-proof layer (4) using a conductive material.

6. The high temperature resistant film-coated composite filter bag according to claim 1, characterized in that: The flame retardant layer (6) is made of aramid fiber, and the flame retardant layer (6) is separately arranged and sleeved on the outer layer of the antistatic layer (5).

7. The high temperature resistant film-coated composite filter bag according to claim 1, characterized in that: The wear-resistant layer (7) is coated with PU material.

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