Filtering bag with film coated with FMT needled felt

Abstract

The utility model discloses a film-coated fluorine mets needled felt filter bag, which comprises a base cloth, a support mechanism and a protection mechanism, a fluorine mets needled felt layer is arranged outside the base cloth, a film-coated layer is covered outside the fluorine mets needled felt layer, a folding mechanism is arranged outside the base cloth and the film-coated layer, and the folding mechanism is arranged outside the base cloth and the film-coated layer. The folding mechanism comprises a first elastic supporting frame, and the surface of the first elastic supporting frame is fixedly connected with a first fixing plate. Through the arrangement of the supporting mechanism and the matching of the first elastic supporting frame, the first fixing plate, the first fixing hole, the second elastic supporting frame, the second fixing plate and the second fixing hole, the problem that a traditional filter bag is difficult to fold is solved, an operator can flexibly fold the filter bag into a proper size according to actual requirements, and the filter bag is convenient to use. The storage space requirement is lowered, the filter bags can be fixed through bolts after being folded, the filter bags are stacked in order, surface abrasion of the filter bags is reduced, the filter bags are convenient to take and use, and the time cost for overhauling production line equipment and replacing the filter bags is reduced.

Description

Technical Field

[0001] This utility model relates to the field of filter bag technology, specifically to a membrane-coated fluoropolymer needle-punched felt filter bag. Background Technology

[0002] A filter bag is a bag-shaped container used for filtration, usually made of fibrous materials. It is mainly used in industrial and environmental protection fields for gas or liquid filtration to remove solid particles, impurities, or harmful substances. In industrial dust removal systems, when dust-laden gas passes through a filter bag, the dust is trapped on the surface of the filter bag, while the clean gas is discharged through the filter bag, thus achieving gas-solid separation and purifying the air. In liquid filtration scenarios, such as sewage treatment and chemical liquid purification, filter bags can intercept solid particles in the liquid, purifying the liquid to meet subsequent process requirements or emission standards.

[0003] In industrial settings with high dust emissions, such as steel smelting, cement production, and waste incineration, membrane-coated fluoropolymer needle-punched felt filter bags have become core components of dust removal systems due to their high-temperature resistance, corrosion resistance, and high-efficiency filtration performance. However, most filter bags currently suffer from two major drawbacks in practical applications: First, traditional filter bags lack a folding and storage design, occupying a large space during storage, and disorderly stacking can easily lead to wear on the filter bag surface membrane and wrinkles in the needle-punched felt layer, directly affecting filtration efficiency and service life; second, irregular stacking also causes inconvenience in retrieval, increases the time cost of equipment maintenance and filter bag replacement, and thus affects the continuous and stable operation of the production line, resulting in poor practicality. Therefore, to solve the above problems, a membrane-coated fluoropolymer needle-punched felt filter bag is proposed. Utility Model Content

[0004] The present invention mainly addresses the technical problems existing in the prior art by providing a membrane-coated fluoropolymer needle-punched felt filter bag.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a membrane-coated fluoropolymer needle-punched felt filter bag, comprising a base fabric, a support mechanism, and a protective mechanism. A fluoropolymer needle-punched felt layer is disposed on the outside of the base fabric, and a membrane layer is disposed on the outside of the fluoropolymer needle-punched felt layer. A stacking mechanism is disposed on the outside of the base fabric and the membrane layer. The stacking mechanism includes a first elastic support frame, a first fixing plate fixedly connected to the surface of the first elastic support frame, and a first fixing hole formed on the surface of the first fixing plate. A second elastic support frame is fixedly connected to the surface of the membrane layer, and a second fixing plate is fixedly connected to the surface of the second elastic support frame. A second fixing hole is formed on the surface of the second fixing plate. The first fixing hole on the first fixing plate and the second fixing hole on the second fixing plate are vertically aligned, and the first fixing plate and the second fixing plate can be fixed together by bolts passing through the first fixing hole and the second fixing hole.

[0006] Preferably, the first fixing plate and the second fixing plate are arranged in a mirror image opposite each other, the second elastic support frame is fixedly connected to the lower end of the coating layer, a plurality of first fixing plates are fixed on the first elastic support frame, and a plurality of second fixing plates are also fixed on the second elastic support frame.

[0007] Preferably, the first elastic support frame has a fixing groove inside, and a first elastic retaining ring is fixedly connected inside the fixing groove. Through the setting of the elastic retaining ring and the first elastic support frame, the bag opening of the filter bag can be supported.

[0008] Preferably, the support mechanism includes a first opening groove, a second elastic retaining ring is fixedly connected inside the first opening groove, the inner surface of the base fabric is provided with a second opening groove, and a third elastic retaining ring is fixedly connected inside the second opening groove. The cooperation of the first elastic retaining ring and the second elastic retaining ring can open up the inside of the filter bag.

[0009] Preferably, the first groove is located at the lower end of the base fabric, the second groove is located in the middle of the base fabric, the first elastic retaining ring supports the bottom of the filter bag, and the second elastic retaining ring supports the middle of the filter bag.

[0010] Preferably, the protective mechanism includes a first rubber ring, which is fixedly connected to the outside of the coating layer. The surface of the first rubber ring is provided with a first anti-slip groove. A second rubber ring is fixedly connected to the lower side of the coating layer. The lower surface of the second rubber ring is provided with a second anti-slip groove. The first rubber ring is fixed at the lower end of the coating layer. Both the first anti-slip groove on the first rubber ring and the second anti-slip groove on the second rubber ring are provided with a plurality of grooves.

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

[0012] 1. This utility model solves the problem of traditional filter bags being difficult to fold by setting up a support mechanism and cooperating with a first elastic support frame, a first fixing plate, a first fixing hole, a second elastic support frame, a second fixing plate, and a second fixing hole. Operators can flexibly fold the filter bags into appropriate sizes according to actual needs, which not only reduces the storage space requirement, but also allows the filter bags to be fixed with bolts after folding, making the filter bags stacked neatly, reducing wear on the filter bag surface, making them easy to take out, and reducing the time cost of production line equipment maintenance and filter bag replacement. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the first overall structure of this utility model from the front view;

[0015] Figure 2 This is a schematic diagram of the second overall structure of this utility model from the front view;

[0016] Figure 3 This is a structural schematic diagram of the present invention from a top cross-sectional view;

[0017] Figure 4 This is a structural schematic diagram of the front cross-section of this utility model.

[0018] In the diagram: 1. Base fabric; 2. Fluoromethasone needle-punched felt layer; 3. Coating layer; 4. First elastic support frame; 5. First fixing plate; 6. First fixing hole; 7. Second elastic support frame; 8. Second fixing plate; 9. Second fixing hole; 10. Fixing groove; 11. First elastic retaining ring; 12. First opening groove; 13. Second elastic retaining ring; 14. Second opening groove; 15. Third elastic retaining ring; 16. First rubber ring; 17. First anti-slip groove; 18. Second rubber ring; 19. Second anti-slip groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4A membrane-coated fluoropolymer needle-punched felt filter bag includes a base fabric 1, a support mechanism, and a protective mechanism. A fluoropolymer needle-punched felt layer 2 is disposed on the outside of the base fabric 1, and a membrane layer 3 is disposed on the outside of the fluoropolymer needle-punched felt layer 2. A folding mechanism is disposed on the outside of the base fabric 1 and the membrane layer 3. The folding mechanism includes a first elastic support frame 4, a first fixing plate 5 fixedly connected to the surface of the first elastic support frame 4, and a first fixing hole 6 formed on the surface of the first fixing plate 5. A second elastic support frame 7 is fixedly connected to the surface of the membrane layer 3, and a second fixing plate 8 is fixedly connected to the surface of the second elastic support frame 7. A second fixing hole 9 is formed on the surface of the second fixing plate 8. The first fixing plate 5 and the second fixing plate 8 are arranged in an upward direction. The bottom mirror image is set up oppositely. The second elastic support frame 7 is fixedly connected to the lower end of the coating layer 3. The first elastic support frame 4 has a fixing groove 10 inside, and the first elastic retaining ring 11 is fixedly connected inside the fixing groove 10. Through the cooperation of the first elastic support frame 4, the first fixing plate 5, the first fixing hole 6, the second elastic support frame 7, the second fixing plate 8, and the second fixing hole 9, the problem of traditional filter bags being difficult to fold is solved. Operators can flexibly fold the filter bags into appropriate sizes according to actual needs, which not only reduces the storage space requirement, but also allows the filter bags to be fixed with bolts after folding, making the filter bags stacked neatly, reducing wear on the surface of the filter bags, making them easy to take out, and reducing the time cost of production line equipment maintenance and filter bag replacement.

[0021] In one aspect of this embodiment, the second elastic retaining ring 13 in the first slot 12, the third elastic retaining ring 15 in the second slot 14 inside the base fabric 1, and the first elastic retaining ring 11 in the first elastic support frame 4 work together to support the bottom, middle and mouth of the filter bag respectively during the use of the filter bag. This support structure can effectively prevent the filter bag from collapsing and deforming under the pressure of dust-laden gas, ensure that the filter bag maintains a good filtration shape, ensure stable filtration area, improve filtration efficiency and filter bag service life.

[0022] In one aspect of this embodiment, the first rubber ring 16 and the second rubber ring 18 are respectively fixed to the outer and lower sides of the membrane layer 3. The first anti-slip groove 17 and the second anti-slip groove 19 opened on their surfaces can provide good friction during the installation and handling of the filter bag, prevent the filter bag from slipping, and at the same time play a certain role in protecting the bottom of the membrane layer 3, avoiding the membrane layer 3 from being scratched and damaged during operation, further extending the service life of the filter bag, and solving the problem of surface wear of filter bags due to improper storage and operation in the prior art.

[0023] The working principle of this utility model is as follows: When the dust-laden gas enters the dust removal equipment and comes into contact with the membrane-coated fluoropolymer needle-punched felt filter bag, the dust particles in the gas are first blocked on the outer surface by the membrane layer 3. Since the membrane layer 3 is made of polytetrafluoroethylene (PTFE), its surface is smooth and its chemical properties are stable, making it difficult for dust to adhere and penetrate, forming only a dust layer on its surface. Some fine dust that is not intercepted by the membrane layer 3 will be further captured by the fluoropolymer needle-punched felt layer 2. This needle-punched felt layer is composed of interwoven fluoropolymer fibers, and its pore structure and large specific surface area can effectively adsorb dust. The clean gas after two layers of filtration is discharged through the base layer cloth 1, achieving gas-solid separation. When folding and storing, the filter bag is neatly stored using a folding mechanism. The operator bends the first elastic support frame 4 and the second elastic support frame 7 towards the middle. At this time, the first fixing plate 5 on the first elastic support frame 4 and the second fixing plate 8 on the second elastic support frame 7 are attached to each other and fixed by bolts passing through the first fixing hole 6 and the second fixing hole 9, so that the filter bag is folded into a regular shape, reducing the space occupied and avoiding the filter bags from squeezing each other, causing wear on the membrane layer 3 and wrinkles in the fluoromethol needle-punched felt layer 2.

[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A membrane-coated fluoropolymer needle-punched felt filter bag, comprising a base fabric (1), a support mechanism, and a protective mechanism, characterized in that: The base fabric (1) is provided with a fluoromethol needle-punched felt layer (2) on the outside, and a film layer (3) is provided on the outside of the fluoromethol needle-punched felt layer (2). A stacking mechanism is provided on the outside of the base fabric (1) and the film layer (3). The stacking mechanism includes a first elastic support frame (4). A first fixing plate (5) is fixedly connected to the surface of the first elastic support frame (4). A first fixing hole (6) is opened on the surface of the first fixing plate (5). A second elastic support frame (7) is fixedly connected to the surface of the film layer (3). A second fixing plate (8) is fixedly connected to the surface of the second elastic support frame (7). A second fixing hole (9) is opened on the surface of the second fixing plate (8).

2. The membrane-coated fluoropolymer needle-punched felt filter bag according to claim 1, characterized in that: The first fixing plate (5) and the second fixing plate (8) are arranged in a mirror image of each other, and the second elastic support frame (7) is fixedly connected to the lower end of the coating layer (3).

3. The membrane-coated fluoropolymer needle-punched felt filter bag according to claim 1, characterized in that: The first elastic support frame (4) has a fixing groove (10) inside, and a first elastic retaining ring (11) is fixedly connected inside the fixing groove (10).

4. The membrane-coated fluoropolymer needle-punched felt filter bag according to claim 1, characterized in that: The support mechanism includes a first slot (12), and a second elastic retaining ring (13) is fixedly connected inside the first slot (12). The inner surface of the base fabric (1) is provided with a second slot (14), and a third elastic retaining ring (15) is fixedly connected inside the second slot (14).

5. The membrane-coated fluoropolymer needle-punched felt filter bag according to claim 4, characterized in that: The first slot (12) is located at the lower end of the base fabric (1), and the second slot (14) is located at the middle of the base fabric (1).

6. The membrane-coated fluoropolymer needle-punched felt filter bag according to claim 1, characterized in that: The protective mechanism includes a first rubber ring (16), which is fixedly connected to the outside of the coating layer (3). A first anti-slip groove (17) is provided on the surface of the first rubber ring (16). A second rubber ring (18) is fixedly connected to the lower side of the coating layer (3). A second anti-slip groove (19) is provided on the lower surface of the second rubber ring (18).

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