CN216726200U

CN216726200U - Sea-island superfine fiber needling filter cloth

Info

Publication number: CN216726200U
Application number: CN202123408099.3U
Authority: CN
Inventors: 刘金林
Original assignee: Fushun Yuefeng Industrial Filter Cloth Factory
Current assignee: Fushun Yuefeng Industrial Filter Cloth Factory
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-14
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses sea island superfine fiber needled filter cloth, which comprises: the first filter layer, the reinforcing base cloth layer and the second filter layer; a reinforcing base cloth layer is arranged at the bottom of the first filtering layer, and a second filtering layer is arranged at the bottom of the reinforcing base cloth layer; the first filter layer and the second filter layer are sea-island superfine fiber fabric layers, and the second filter layer is a high-strength low-elongation polyester filament fabric layer; the filter cloth processed by the needle punching method and the fixed weight method, after fiber opening and sizing, has good dimensional stability, higher filtering precision and longer service life than the traditional chemical fiber filter cloth, and can meet the filtering and separating requirements of a dark flow plate-and-frame filter press and a product with high filtering precision.

Description

Sea-island superfine fiber needling filter cloth

Technical Field

The utility model relates to the technical field of filter cloth, in particular to sea-island superfine fiber acupuncture filter cloth. Is suitable for the field of filtering and separating superfine materials and dust to replace cotton cloth, filter paper and various chemical fiber filter cloths.

Background

The existing filter cloth is mainly made of cotton cloth, filter paper and various chemical fiber filter cloth as filter media, wherein the cotton cloth is made by the traditional textile technology, and the filter paper is made by the paper making method. The cotton cloth is cellulose fiber, and can expand when meeting water, so that the pores among the fibers of the filter cloth are smaller, and the filter cloth has the advantages of high filtering precision, low price and the like. But the defects are that the cotton cloth has poor dimensional stability and serious shrinkage deformation after washing, and the cotton cloth can not be arranged in alignment with the filter plate holes and is scrapped after being washed 2 to 3 times under a common machine. The service life is only 2 to 3 months. The filter paper has the advantages of high filtering precision, low strength, easy tearing and damage in the using process, about 10 days of service life, frequent replacement of the filter paper, more replacement personnel, low production efficiency of equipment, high labor intensity of workers and high comprehensive cost.

The conventional chemical fiber filter cloth generally has low filtering precision and cannot be applied to the field with high filtering precision requirement.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model discloses sea-island superfine fiber acupuncture filter cloth, which comprises: the first filter layer, the reinforcing base cloth layer and the second filter layer;

a reinforcing base cloth layer is arranged at the bottom of the first filtering layer, and a second filtering layer is arranged at the bottom of the reinforcing base cloth layer;

the first filter layer and the second filter layer are sea-island superfine fiber fabric layers or polyester-nylon composite filament fiber fabric layers, and the reinforcing base fabric layer is a high-strength low-elongation polyester filament fabric layer.

Preferably, the first filter layer and the second filter layer are woven into a net structure through a needle punching method and a weight fixing method.

Preferably, the total needling density of the first and second filter layers is 500-.

Preferably, the reinforcing base cloth layer accounts for 15-20% of the filter cloth by weight.

The utility model has the following beneficial effects: the finished product of the fiber-opening and sizing filter cloth is processed by a needle punching method and a fixed weight method, has good dimensional stability, higher filtering precision and longer service life (6-12 months) than the traditional chemical fiber filter cloth, can be suitable for various plate-and-frame filter presses, centrifuges and other filter equipment, and is used in the field of filtering and separating with high filtering precision requirements.

Drawings

FIG. 1 is a schematic structural diagram of a sea-island microfiber needle-punched filter cloth according to the present invention.

The attached drawings are as follows:

1. a first filter layer; 2. a reinforcing base cloth layer; 3. a second filter layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, there is provided a sea-island microfiber needle-punched filter cloth according to an embodiment of the present invention, comprising: a first filter layer 1, a reinforcing base fabric layer 2 and a second filter layer 3;

the bottom of the first filter layer 1 is provided with a reinforcing base cloth layer 2, and the bottom of the reinforcing base cloth layer 2 is provided with a second filter layer 3;

the first filter layer 1 and the second filter layer 3 are sea-island superfine fiber fabric layers or polyester-nylon composite filament fiber fabric layers, and the reinforcing base fabric layer 2 is a high-strength low-elongation polyester filament fabric layer.

Preferably, the first filter layer 1 and the second filter layer 3 are woven into a net structure by a needle punching method and a weight fixing method.

Preferably, the total needling density of the first filter layer 1 and the second filter layer 3 is 500-.

As a preferable scheme, furthermore, the reinforcing base cloth layer 2 accounts for 15-20% of the filter cloth by weight.

According to the technical scheme, the sea-island ultrafine fiber needled filter cloth provided by the embodiment of the application is of a three-layer sheet structure and comprises a first filter layer 1, a second filter layer 3 and a reinforcing base cloth layer 2, the reinforcing base cloth layer 2 is arranged between the first filter layer 1 and the second filter layer 3, the first filter layer 1 and the second filter layer 3 are sea-island ultrafine fiber cloth layers or polyester-nylon composite fiber cloth layers, the sea-island fibers or the polyester-nylon composite fiber cloth layers are directional and in a fiber bundle shape during processing, needling, alkali decrement fiber opening, heat setting and surface treatment are carried out after full opening, a net structure is formed by a needling method and a dead weight method, the needling method is carried out by adopting an opener of a card needle beater to carry out primary opening treatment, adopting a double-cylinder machine to carry out fine opening treatment, and carrying out two procedures of coarse opening and fine opening, then, the fabric enters a carding machine to be carded into a net-shaped structure by adopting a common constant weight method, and is simultaneously fed into a needle machine with the high-strength low-elongation polyester filament fabric of the reinforcing base fabric layer 2 for needle punching, a 42# triangular needle is adopted as a needle, the total needle punching density is 500 plus 1000 needles/square centimeter, so that a product can reach certain compactness, fibers cannot be excessively damaged, burrs are cut off after needle punching processing, and the product enters an overflow cylinder for alkali reduction and fiber splitting, and an alkali reduction process is carried out: the concentration of caustic soda is 8-10g/L, the temperature is 110 ℃, and the time is 50 minutes. After opening, the fiber thickness is reduced from the original 3D to 0.07D, and the degree of the superfine fiber is achieved. And (4) after fiber opening, setting in a heat setting machine at 180 ℃ for 3 minutes. The tentering width is adjusted according to 2 percent of pre-shrinking and then is subjected to heat setting, so that the filter cloth can be ensured not to deform when used below 130 ℃, and singeing and press polishing treatment are performed after the heat setting, wherein singeing is to heat the surface of the filter cloth through flame to enable fibers floating on the surface to be heated, melted and retracted to enable pores on the surface of the filter cloth to be smaller, so that the filtering precision is improved. The calendering is that the filter cloth passes through two high-temperature round rollers with smooth surfaces, so that the filter cloth forms a smooth surface under the extrusion and high-temperature effects of the round rollers, smooth cake removal in use is facilitated, and further the filter cloth is processed, the dosage of sea-island superfine fibers or polyester-polyamide composite filament fibers of the processed first filter layer 1 and the second filter layer 3 is 200-350 g per square meter, the weight of the base cloth layer 2 per square meter is 90-130 g, the weight of the processed filter cloth per unit area is 500-800 g/square meter, the processed filter cloth has higher stability, and the calendering is suitable for the use requirements of different equipment and ensures that enough fine fibers play a role in the intercepting and filtering process.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An island superfine fiber needle filter cloth is characterized by comprising: a first filter layer (1), a reinforcing base fabric layer (2) and a second filter layer (3);

the bottom of the first filter layer (1) is provided with a reinforcing base cloth layer (2), and the bottom of the reinforcing base cloth layer (2) is provided with a second filter layer (3);

the first filter layer (1) and the second filter layer (3) are sea-island superfine fiber fabric layers or polyester-nylon composite filament fiber fabric layers, and the reinforcing base fabric layer (2) is a high-strength low-elongation polyester filament fabric layer.

2. The sea-island ultrafine fiber needle-punched filter cloth according to claim 1, wherein the first filter layer (1) and the second filter layer (3) are woven into a net structure by a needle-punching method and a weight fixing method.

3. The sea-island ultrafine fiber needle-punched filter cloth as claimed in claim 2, wherein the total needle-punched density of the first filter layer (1) and the second filter layer (3) is 500 and 1000 needles/cm.

4. The sea-island ultrafine fiber needle-punched filter cloth according to claim 1, wherein the reinforcing base cloth layer (2) accounts for 15-20% by weight of the filter cloth.