CN210699194U

CN210699194U - PTFE tectorial membrane filter cloth

Info

Publication number: CN210699194U
Application number: CN201920671420.0U
Authority: CN
Inventors: 李士亮
Original assignee: Jiangsu Kanglongdi Ultra Clean Technology Co ltd
Current assignee: Jiangsu Kanglongdi Ultra Clean Technology Co ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-06-09
Anticipated expiration: 2029-05-10

Abstract

The utility model provides a PTFE tectorial membrane filter cloth is interweaved by warp and weft and forms, a serial communication port, the filter cloth that warp and weft woven about the terminal surface be provided with PMMA fibrous layer and PTFE micropore rete from inside to outside respectively, the edge of PTFE micropore rete and PMMA fibrous layer is connected through making up with the edge of filter cloth. The utility model provides a PTFE tectorial membrane filter cloth surface is PTFE micropore rete of straining, has increased its surface smoothness and filtration efficiency, can prevent simultaneously that the suspended solid on filter cloth surface from piling up, has antistatic effect moreover for dust, ash are difficult for being stained with and attach at filter bag top layer or inlayer, avoid causing potential safety hazards such as explosion characteristic dust explosion.

Description

PTFE tectorial membrane filter cloth

Technical Field

The utility model relates to a filter material technical field, concretely relates to PTFE tectorial membrane filter cloth.

Background

With the rapid development of modern industrial processes of countries in the world, environmental problems are increasingly highlighted. In the production process of the industries such as chemical industry, electric power, steel, metallurgy, waste incineration and the like, a large amount of high-temperature smoke dust can be generated, and the environment is seriously polluted. Aiming at high-temperature smoke dust generated in industrial production, emission control measures are established in all countries in the world. In the comprehensive emission standard of atmospheric pollutants established in 1996 (GB 16297-The outlet concentration of (A) is strictly limited to 50-100mg/m³. In recent years, the requirement of China on the emission of atmospheric pollutants is getting stricter. Currently, the ministry of environmental protection in China requires that the emission concentration of waste gas and dust of each industrial and mining enterprise is less than 30mg/m³And in some places even as low as 10mg/m³. This places very stringent requirements on the filtration accuracy of the filter material.

In order to meet the requirement, for the bag type dust collector, a method of performing surface film coating treatment on the filter cloth is mostly adopted at present, and a PTFE film is coated on the surface of the filter cloth, so that the filtering precision of the filter material is improved. After the filter cloth is coated with the membrane, the filtering efficiency and the filtering precision can be greatly improved. PTFE is a low surface energy substance, and can increase the hydrophobicity of the filter material when being coated on the surface of the filter material. In the high-humidity flue gas filtration, especially for the filtration working condition with large moisture content, the problem of bag pasting of the filter bag can be greatly reduced, and the running resistance and the filtration energy consumption are reduced. But the PTFE membrane is very thin (< 10 mu m), so the mechanical property is poor. If the film covering process is unreasonable, the film covering process is easy to damage, thereby affecting the filtering precision and the service life of the film.

Disclosure of Invention

The utility model aims at solving the problems of poor mechanical property, poor dust removal effect, short service life and low precision existing in the prior art and providing a PTFE tectorial membrane filter cloth.

The technical scheme of the utility model is realized like this:

the technical scheme 1: the PTFE (polytetrafluoroethylene) coated filter cloth is formed by interweaving warp and weft, a PMMA (polymethyl methacrylate) fiber layer and a PTFE (polytetrafluoroethylene) microporous membrane layer are respectively arranged on the upper end face and the lower end face of the filter cloth woven by the warp and the weft from inside to outside, and the edges of the PTFE microporous membrane layer and the PMMA fiber layer are connected with the edge of the filter cloth through sewing.

The technical scheme 2 is as follows: on the basis of the technical scheme 1, the pore diameter of the PTFE microporous membrane is further improved to be between 0.1 and 0.5 nm.

Technical scheme 3: on the basis of the technical scheme 1, the warp yarns are made of glass fibers.

The technical scheme 4 is as follows: on the basis of the technical scheme 1, the novel fabric is further improved in the following way, wherein the weft is polypropylene long fiber multifilament.

The technical scheme 5 is as follows: on the basis of the technical scheme 1, the PMMA fiber layer is further improved to be 0.1-0.3mm thick.

The technical scheme 6 is as follows: on the basis of the technical scheme 1, the filter cloth is further improved as follows, and the thickness of the filter cloth is 1-2 mm.

The technical scheme 7 is as follows: on the basis of the technical scheme 1, the PTFE microporous membrane layer is further improved to be 10-20 μm thick.

The utility model has the advantages that: the PTFE tectorial membrane filter cloth surface that the utility model provides is PTFE micropore filter membrane layer, has increased its surface smoothness and filtration efficiency, can prevent the suspended solid of filter cloth surface from piling up simultaneously, and have antistatic effect moreover, make dust, dust be difficult for being stained with and attach at filter bag top layer or inlayer, avoid causing potential safety hazards such as blasting characteristic dust explosion;

the utility model discloses be equipped with the PMMA fibrous layer, make it have good chemical stability and weatherability, prolong the life and the use accuracy of acupuncture felt.

The present invention will be further explained with reference to the drawings and examples.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural view of the present invention;

1. warp threads; 2. a weft; a PMMA fiber layer; and 4. a PTFE microporous filter membrane layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The PTFE (polytetrafluoroethylene) coated filter cloth is formed by interweaving warp 1 and weft 2, a PMMA (polymethyl methacrylate) fiber layer 3 and a PTFE (polytetrafluoroethylene) microporous membrane layer 4 are respectively arranged on the upper end face and the lower end face of the filter cloth woven by the warp 1 and the weft 2 from inside to outside, and the edges of the PTFE microporous membrane layer 3 and the PMMA fiber layer 4 are connected with the edge of the filter cloth through sewing. The warp 1 is glass fiber. The weft 2 is polypropylene filament multifilament. The thickness of the filter cloth is 1 mm.

The pore diameter of the PTFE microporous membrane 4 is between 0.1 nm. The thickness of the PTFE microporous membrane layer 4 is 10 μm.

The thickness of the PMMA fibre layer 3 is 0.1 mm.

Example 2

The PTFE (polytetrafluoroethylene) coated filter cloth is formed by interweaving warp 1 and weft 2, a PMMA (polymethyl methacrylate) fiber layer 3 and a PTFE (polytetrafluoroethylene) microporous membrane layer 4 are respectively arranged on the upper end face and the lower end face of the filter cloth woven by the warp 1 and the weft 2 from inside to outside, and the edges of the PTFE microporous membrane layer 3 and the PMMA fiber layer 4 are connected with the edge of the filter cloth through sewing. The warp 1 is glass fiber. The weft 2 is polypropylene filament multifilament. The thickness of the filter cloth is 2 mm.

The pore diameter of the PTFE microporous membrane 4 is between 0.5 nm. The thickness of the PTFE microporous membrane layer 4 is 20 μm.

The thickness of the PMMA fibre layer 3 is 0.3 mm.

Example 3

The PTFE (polytetrafluoroethylene) coated filter cloth is formed by interweaving warp 1 and weft 2, a PMMA (polymethyl methacrylate) fiber layer 3 and a PTFE (polytetrafluoroethylene) microporous membrane layer 4 are respectively arranged on the upper end face and the lower end face of the filter cloth woven by the warp 1 and the weft 2 from inside to outside, and the edges of the PTFE microporous membrane layer 3 and the PMMA fiber layer 4 are connected with the edge of the filter cloth through sewing. The warp 1 is glass fiber. The weft 2 is polypropylene filament multifilament. The thickness of the filter cloth is 1.5 mm.

The pore diameter of the PTFE microporous membrane 4 is between 0.3 nm. The thickness of the PTFE microporous membrane layer 4 is 15 μm.

The thickness of the PMMA fibre layer 3 is 0.2 mm.

The filter cloth can resist the waste gas environment with the pH value of 1-13, and the use temperature can reach 250 ℃; the micro-dust capturing effect is good, the capturing rate of PM2.5 in industrial dust can reach 100%, and haze can be effectively prevented; warp strength is more than or equal to 2200N/5 x 20cm, weft strength is more than or equal to 2200N/5 x 20cm, warp elongation at break is less than or equal to 12%, weft elongation at break is less than or equal to 10%, and air permeability is 15-20m³/m²Min, the service life can reach 5 years.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The PTFE coated filter cloth is formed by interweaving warp and weft, and is characterized in that a PMMA fiber layer and a PTFE microporous membrane layer are arranged on the upper end face and the lower end face of the filter cloth woven by the warp and the weft from inside to outside respectively, the edges of the PTFE microporous membrane layer and the PMMA fiber layer are connected with the edge of the filter cloth through sewing, the warp is glass fiber, and the weft is polypropylene long-fiber multifilament.

2. A PTFE coated filter cloth according to claim 1, wherein the pore size of the PTFE microporous membrane is between 0.1 and 0.5 nm.

3. A PTFE coated filter cloth according to claim 1, wherein the PMMA fiber layer has a thickness of 0.1-0.3 mm.

4. A PTFE coated filter cloth according to claim 1, having a thickness of 1-2 mm.

5. A PTFE coated filter cloth according to claim 1, wherein the PTFE microporous membrane layer has a thickness of 10-20 μm.