PTFE needled felt with drainage structure

Abstract

The utility model relates to the technical field of PTFE needled felts, and discloses a PTFE needled felt with a drainage structure, a plurality of drainage grooves are formed in the inner side of a needled filter bag, a groove is annularly formed in the bottom end of the needled filter bag, a plurality of through holes are formed in the groove, and the drainage grooves are communicated with the drainage grooves. According to the needle-punched filter bag, when accumulated liquid exists in the drainage groove, the accumulated liquid slides down along the side end of the drainage groove, the accumulated liquid is discharged from each through hole, when accumulated liquid exists at the bottom end in the needle-punched filter bag, the accumulated liquid flows into the groove along the side end of the protrusion and then flows out from each through hole, and due to the arrangement of the absorbent cotton, the drained accumulated liquid can be partially absorbed conveniently; according to the PTFE needled felt filter bag, the through holes are filled with the accumulated liquid, so that the accumulated liquid is prevented from being blocked by excessive accumulated liquid to influence the discharge effect of the accumulated liquid, and the residual accumulated liquid can be continuously discharged from the through holes, so that the accumulated liquid in the PTFE needled felt filter bag can be conveniently discharged, the filtering effect of the needled filter bag is prevented from being influenced due to accumulation of the accumulated liquid in the filter bag, and the needled filter bag is prevented from being corroded and damaged due to the fact that the accumulated liquid is not discharged for a long time.

Description

Technical Field

[0001] This utility model relates to the field of PTFE needle-punched felt technology, specifically to a PTFE needle-punched felt with a drainage structure. Background Technology

[0002] PTFE needle-punched felt is a felt-like material made of polytetrafluoroethylene (PTFE), possessing excellent corrosion resistance, heat resistance, oil resistance, stain resistance, abrasion resistance, and a low coefficient of friction. PTFE needle-punched felt is widely used in various fields such as dust removal, air purification, and liquid filtration due to its outstanding chemical stability, high-temperature resistance, and low coefficient of friction.

[0003] However, existing PTFE needle-punched felt filter bags have poor hydrophilicity, which leads to liquid accumulation on the surface of the filtered air after prolonged use due to high humidity. This affects the filtration effect of the needle-punched felt filter bags, and if the accumulated liquid is not drained for a long time, it will also cause corrosion and damage to the needle-punched felt filter bags. Therefore, a PTFE needle-punched felt with a drainage structure is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a PTFE needle-punched felt with a drainage structure, which solves the problem that existing PTFE needle-punched felt filter bags, due to their poor hydrophilicity, are prone to accumulating liquid on their surface after prolonged use due to high humidity in the filtered air, thus affecting the filtration effect of the needle-punched felt filter bag. Furthermore, if the accumulated liquid is not drained for a long time, it will also cause corrosion and damage to the needle-punched felt filter bag.

[0005] This utility model provides the following technical solution: a PTFE needle-punched felt with a drainage structure, including a needle-punched filter bag, wherein a plurality of drainage grooves are opened on the inner side of the needle-punched filter bag, and a groove is opened in an annular shape at the bottom end of the needle-punched filter bag, wherein a plurality of through holes are opened inside the groove.

[0006] As a preferred embodiment of the above technical solution, the needle-punched filter bag includes a base fabric, both ends of which are fixedly connected with PTFE needle-punched felt layers, and each set of PTFE needle-punched felt layers has antistatic fiber filaments embedded at the end away from the base fabric.

[0007] As a preferred embodiment of the above technical solution, the antistatic fibers are arranged in a crisscross pattern.

[0008] As a preferred embodiment of the above technical solution, each of the drainage channels is opened at an angle, and each drainage channel has a corresponding through hole below it.

[0009] As a preferred embodiment of the above technical solution, the bottom end of the needle-punched filter bag is provided with a protrusion.

[0010] As a preferred embodiment of the above technical solution, each of the through holes is equipped with absorbent cotton.

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

[0012] Because the drainage channels of this invention are angled, when there is liquid in the drainage channels, it will slide down along the side of the channels. Since each drainage channel corresponds to a through hole, the liquid can be easily discharged from each through hole. Because the bottom of the needle-punched filter bag has a protrusion, when there is liquid inside the bottom of the needle-punched filter bag, it will flow along the protruding side into the groove, and then flow out from each through hole. The absorbent cotton facilitates the absorption of some of the drained liquid. The absorbent cotton is relatively thin, and although it expands to some extent after absorbing water, it will not affect the drainage of the through holes. After the absorbent cotton partially absorbs the liquid, it prevents excessive liquid from clogging the through holes and affecting the drainage effect. The remaining liquid will continue to drain from the through holes. Therefore, through the above structural design, it is easy to drain the liquid inside the PTFE needle-punched felt filter bag, preventing the liquid from accumulating inside the filter bag and affecting the filtration effect of the needle-punched filter bag, and preventing corrosion damage to the needle-punched filter bag due to prolonged lack of drainage. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a PTFE needle-punched felt with a drainage structure;

[0014] Figure 2 This is a schematic diagram of the exploded structure of a PTFE needle-punched felt with a drainage structure.

[0015] Figure 3 This is a schematic cross-sectional view of a PTFE needle-punched felt with a drainage structure.

[0016] Figure 4 for Figure 3 A magnified schematic diagram of part A in the diagram.

[0017] In the diagram: 1. Needle-punched filter bag; 2. Base fabric; 3. PTFE needle-punched felt layer; 4. Antistatic fiber filaments; 5. Drainage groove; 6. Protrusion; 7. Groove; 8. Through hole; 9. Absorbent cotton. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] like Figures 1-4As shown, this utility model provides a technical solution: a PTFE needle-punched felt with a drainage structure, including a needle-punched filter bag 1. The inner side of the needle-punched filter bag 1 has several drainage grooves 5, each of which is inclined. A groove 7 is annularly formed at the bottom end of the needle-punched filter bag 1, and a protrusion 6 is provided at the bottom end. Several through holes 8 are formed inside the groove 7, with each drainage groove 5 corresponding to a through hole 8. Absorbent cotton 9 is installed inside each through hole 8. Because the drainage grooves 5 are inclined, when there is accumulated liquid in the drainage grooves 5 on the inner wall of the needle-punched filter bag 1, it will slide down along the side end of the drainage groove 5. Since each drainage groove 5 corresponds to a through hole 8, the accumulated liquid can easily drain out from each through hole 8. Because the bottom end of the needle-punched filter bag 1 has a protrusion 6, when the needle-punched filter bag 1 is needle-punched... When there is liquid accumulation at the bottom of the filter bag 1, it will flow along the side of the protrusion 6 into the groove 7, and then flow out from each through hole 8. Due to the design of the absorbent cotton 9, it is easy to absorb part of the liquid that flows down. The absorbent cotton 9 is relatively thin. Although it expands to a certain extent after absorbing water, it will not affect the drainage of water through the through holes 8. After the absorbent cotton 9 partially absorbs the liquid, it avoids excessive liquid accumulation that clogs the through holes 8 and affects the drainage effect. The remaining liquid will continue to be discharged from the through holes 8, and the water absorbed in the absorbent cotton 9 will continue to drip down. The absorbent cotton 9 can be reused after drying. Therefore, through the above structure, it is easy to drain the liquid inside the PTFE needle-punched felt filter bag, avoiding the impact of liquid accumulation on the filtration effect of the needle-punched filter bag 1, and avoiding corrosion damage to the needle-punched filter bag 1 due to the liquid not being discharged for a long time.

[0020] As one implementation method in this embodiment, such as Figure 2 As shown, the needle-punched filter bag 1 includes a base fabric 2, with PTFE needle-punched felt layers 3 fixedly connected to both ends of the base fabric 2. Each group of PTFE needle-punched felt layers 3 has antistatic fiber filaments 4 embedded at the end away from the base fabric 2. Several antistatic fiber filaments 4 are arranged in a crisscross pattern. By setting the antistatic fiber filaments 4, the antistatic effect of the filter bag made of PTFE needle-punched felt is improved, which can effectively prevent the accumulation and discharge of static electricity.

[0021] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A PTFE needle-punched felt with a drainage structure, comprising a needle-punched filter bag (1), characterized in that: The needle-punched filter bag (1) has several drainage grooves (5) on its inner side, and a groove (7) is formed around the bottom of the needle-punched filter bag (1). The groove (7) has several through holes (8) inside.

2. The PTFE needle-punched felt with a drainage structure according to claim 1, characterized in that: The needle-punched filter bag (1) includes a base fabric (2), both ends of which are fixedly connected with PTFE needle-punched felt layers (3), and each set of PTFE needle-punched felt layers (3) has antistatic fiber filaments (4) embedded at the end away from the base fabric (2).

3. The PTFE needle-punched felt with a drainage structure according to claim 2, characterized in that: Several antistatic fiber filaments (4) are arranged in a crisscross pattern.

4. The PTFE needle-punched felt with a drainage structure according to claim 1, characterized in that: Each of the drainage channels (5) is opened at an angle, and each drainage channel (5) corresponds to a through hole (8) below it.

5. A PTFE needle-punched felt with a drainage structure according to claim 1, characterized in that: The bottom end of the needle-punched filter bag (1) has a protrusion (6).

6. The PTFE needle-punched felt with a drainage structure according to claim 1, characterized in that: Each of the through holes (8) is fitted with absorbent cotton (9).

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