CN218636831U

CN218636831U - Special filter cloth for nickel-cobalt filtering industry of filter press

Info

Publication number: CN218636831U
Application number: CN202222541592.0U
Authority: CN
Inventors: 张磊; 王训强; 车治勇
Original assignee: Jingjin Equipment Co Ltd
Current assignee: Jingjin Equipment Co Ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-03-17
Anticipated expiration: 2032-09-26

Abstract

The utility model discloses a special filter cloth for a filter press for filtering nickel and cobalt, which is woven by warps and wefts; the main points of the overall technical scheme are as follows: the existing polypropylene filament is changed into polypropylene multifilament and polypropylene staple fiber, so that ultrafine material particles can be intercepted, the filter cloth is compact, the unloading speed is high, and the service life is long; the existing weaving mode is four-upper four-lower oblique-grain weaving, the surface of the filter cloth is smoother after high-temperature shaping and calendering, and the air permeability is 0.5L/m ² About S, the filter is specially used for filtering extremely fine particles of materials in the nickel-cobalt industry and the like.

Description

Special filter cloth for nickel-cobalt filtering industry of filter press

Technical Field

The utility model belongs to the technical field of the industry is weaved, a filter cloth that two fabric tissue of polypropylene fibre multifilament, polypropylene fibre short fiber combine is related to.

Background

The filter press is a universal solid-liquid separation device and is widely applied to the industries of chemical industry, metallurgy, pharmacy, dye, food, brewing, ceramics and environmental protection. The filter cloth is a component of the filter press, and mainly has the functions of solid-liquid separation, solid-gas separation, and the performance of the filter cloth and the capability of realizing the solid-liquid separation under the conditions of no blockage and no damage, and directly influences the filtering effect of the filter press. The filter cloth is installed on the filter plate of pressure filter, and the cladding is in the filter plate both sides, and the filter cloth is compressed tightly to the filter plate frame during operation, forms airtight filter chamber between two adjacent filter cloths, and the material gets into the filter chamber through the pressure of charge pump, and the filter cloth holds back granule wherein and forms the filter cake, and filtrating is discharged by the pipeline through the filter plate goes out the liquid hole to realize solid-liquid separation's purpose.

Industrial filter cloth, which is both a filter medium and a seal of an adjacent filter plate, is a core element of a filter press and is woven from warp yarns (threads parallel to the selvedge) and weft yarns (threads perpendicular to the selvedge). The filter cloth has different tissue structures, yarn varieties and materials, so that the performance is different, and the filter cloth is suitable for solid-liquid separation of different suspensions through intermediate tests. The silk thread material of filter cloth is mostly polypropylene fibre, dacron, polyamide fibre etc. and polypropylene fibre infiltration, regeneration performance are better, and polypropylene fibre has simple production technology, and the product is cheap, and intensity is high, relative density light advantage such as, is the fourth main variety of synthetic fiber, is the lightest fibre among the common chemical fiber. The polypropylene fibers are in the forms of long fibers, short fibers, bristles, split fibers, hollow fibers, profiled fibers, various composite fibers, nonwoven fabrics and the like. The main application is to manufacture carpet, decorative cloth, furniture cloth, various ropes, strips, fishing nets, oil absorption felts, building reinforcing materials, packaging materials and industrial cloth, such as filter cloth, bag cloth and the like, and the filter cloth is mainly woven by polypropylene fibers and is specially used for a filter press to filter various materials.

The existing filter cloth has the following defects: the fracture strength is low, the discharging is difficult, the corrosion is not resistant, the filter cloth gap is large, the tiny material particles can not be intercepted, the filtering effect of the filter press is seriously influenced, and the economic benefit of enterprises is not favorably improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defect of current nickel cobalt trade filter cloth, solving corresponding technical problem, providing a novel special filter cloth of nickel cobalt trade.

The utility model provides an innovation technical scheme that prior art problem adopted is: a special filter cloth for nickel-cobalt industry is woven by warps and wefts; the main points of the overall technical scheme are as follows: the existing polypropylene filament is changed into polypropylene multifilament and polypropylene staple fiber so as to achieve the purposes of intercepting extremely fine material particles and easily discharging cakes; the weaving mode is improved to fourThe four-lower-twill weaving mode expands the use performance of the filter cloth, so that the warp tightness deviation of the front and back sides of the fabric is small, the cloth surface of a finished product is smooth and smooth, the strength is increased, and the service life is prolonged; the surface of the filter cloth is smoother after high-temperature shaping and calendaring, and the air permeability is 0.5L/m ² about/S, is specially used for filtering in the nickel and cobalt industry, and completely replaces the prior polypropylene filament filter cloth.

The specific design scheme of the special filter cloth for the nickel-cobalt industry is as follows: the polypropylene fiber composite yarn is formed by weaving polypropylene multifilament and polypropylene staple fiber, and the warp yarn is 500 denier twisted polypropylene multifilament with the density of 650 pieces/10 cm; the weft yarns are 18 pieces of 3 strands of short fibers and the density is 230 pieces/10 cm; the cloth cover weave uses four upper and four lower twills, namely, the warp yarn and the weft yarn of the upper layer weave are circularly arranged in a way that the warp yarn is positioned at the upper layer four picks of the weft yarn, and the warp yarn is positioned at the lower layer four picks of the weft yarn; the filter cloth woven by the yarns and the method has the air permeability of 0.5L/m ² about/S, can intercept very fine material granule, the filter cloth warp and weft fracture strength is high, and is tough closely knit, and the surface is more smooth after high temperature design calendering, and the discharge speed is fast, and is high temperature resistant, and corrosion resistance is stronger, generally promotes the life of filter cloth.

The utility model provides a pair of special filter cloth of nickel cobalt trade is filtered to pressure filter has closely knit tough, can intercept superfine material granule, unload fast, corrosion-resistant, advantage such as long service life, satisfies the production application of pressure filter solid-liquid separation in the nickel cobalt trade.

Drawings

Fig. 1 is a pattern and a pictogram of a special filter cloth pattern for the nickel cobalt filtering industry of the filter press.

Fig. 2 is the utility model relates to a special filter cloth line structure schematic diagram of nickel cobalt trade is filtered to pressure filter.

Reference numerals are as follows: 1- -the warp (warp), 2- -the weft (weft).

Detailed Description

The technical solution of the embodiment of the present invention is described below with reference to the attached drawings in an embodiment of the present invention, and the described embodiment is only a preferred embodiment of the present invention, not a whole embodiment. All other embodiments, which are not inventive, based on the embodiments of the present invention and are made by those skilled in the art belong to the protection scope of the present invention.

Example 1

A filter cloth special for a filter press in the nickel-cobalt filtering industry is woven by warps 1 and wefts 2; the main points of the overall implementation scheme of the innovation are as follows: the existing polypropylene filament is changed into polypropylene multifilament and polypropylene staple fiber, so as to achieve the advantages of capability of intercepting extremely fine material particles (compactness), high breaking strength (toughness), long service life, corrosion resistance and high temperature resistance; the existing weaving mode is improved into a twill weaving mode with four upper sides and four lower sides, so that the tightness deviation of warp yarns on the front side and the back side of the fabric is small, the polypropylene fibers have strong chemical corrosion resistance, and the polypropylene fibers have good acid and alkali resistance except concentrated nitric acid and concentrated caustic soda, so that the polypropylene fibers are suitable for being used as a filtering material. Specific embodiments are detailed below:

the warp 1 is polypropylene multifilament with 500 denier twisting and 650/10 cm density; the weft 2 is 18 pieces of 3 strands of short fibers, and the density of the short fibers is 230 pieces per 10 cm of polypropylene fiber short fibers; the filter cloth woven by the two yarns alternately has the advantages of corrosion resistance, high temperature resistance, high compactness, capability of intercepting superfine material particles, smooth cloth surface, high discharging speed and the like.

The twill weaving mode is four-up four-down weaving mode, namely a circulating arrangement mode of warps 1 and wefts 2 is as follows: the upper layer weave warp 1 and the weft 2 are circularly arranged in a way that the warp 1 is positioned at the upper layer four picks of the weft 2, and the warp 1 is positioned at the lower layer four picks of the weft 2; the air permeability of the filter cloth is 0.5L/m ² About S, the surface is smoother after high-temperature shaping and calendering, the compactness is increased, the breaking strength is increased, and the service life is prolonged.

The weaving equipment used was: the multi-denier P1 heavy rapier loom can change the variety rapidly, and the tightness of the fabric is extremely high due to the super-strong beating-up force, so that the operation is simple and convenient, and the production efficiency is high.

Claims

1. Nickel-cobalt filtering industry of filter pressThe special filter cloth comprises warp and weft; the method is characterized in that: the warp is polypropylene multifilament with 500 denier twisting and 650 density per 10 cm; the weft is 18 pieces of 3 strands of short fibers and polypropylene short fibers with the density of 230 pieces/10 cm; the cloth cover weave uses four upper and four lower twills, namely, the warp yarn of the upper layer weave and the weft yarn are circularly arranged in a mode that the warp yarn is positioned at the upper layer four wefts of the weft yarn, and the warp yarn is positioned at the lower layer four wefts of the weft yarn; the filter cloth woven by the yarns and the method has the air permeability of 0.5L/m ² /S。