CN213061211U - Long fiber multifilament longitude and latitude weight flat ridge filter cloth and corresponding high-precision filter press - Google Patents

Abstract

The utility model discloses a long fiber multifilament longitude and latitude weight flat ridge filter cloth and a corresponding high precision filter press; the filter cloth comprises warp and weft, and the key point of the innovative scheme is that; the warp is 1000D long fiber polypropylene multifilament, and the warp density is 256 yarns/10 cm; the weft is 1200D untwisted long fiber polypropylene multifilament, and the weft density is 128 pieces/10 cm; the weaving mode is 1/1 longitude and latitude weight average, and one longitude and latitude circulation arrangement mode is as follows: two warps float on the cloth cover and two wefts float under the cloth cover at one interweaving point, namely the two warps are positioned on the upper layer of the wefts and the two warps are positioned on the lower layer of the wefts, so that the filter cloth has good trapping, permeating, regenerating, physical and chemical properties and mechanical properties; solves the technical problems of low strength of the short fiber multifilament filter cloth, poor permeability of the plain filter cloth and the like. The high-precision filter press meets the requirements of large-scale, high-efficiency and fine filtration of modern chemical engineering and food suspension, and improves the service life and production efficiency of the filter cloth.

Description

Long fiber multifilament longitude and latitude weight flat ridge filter cloth and corresponding high-precision filter press

Technical Field

The utility model belongs to the technical field of high accuracy pressure filter (patent classification number B01D 25/12), a multifilament rib filter cloth (patent classification number B01D 39/08) is related to.

Background

The filter press is a pressurized filtering device with multiple filtering chambers operated intermittently; a high-precision filter press capable of filtering out 10-20 mu m fine particles mainly comprises a frame, a pressing mechanism, a high-precision filtering mechanism (including filter cloth), a pulling plate mechanism, a cloth washing mechanism, a hydraulic driving mechanism, a PLC program control system and the like, and is suitable for solid-liquid separation of suspensions in chemical industry and food industry.

An industrial filter cloth, which is a core element of a filter press and is woven by warps (lines parallel to a cloth edge) and wefts (lines perpendicular to the cloth edge); the knitting method (weave structure) includes: plain weave, heavy flat rib weave, twill weave and satin weave, and non-woven needle punching forming; the varieties of warp and weft are: monofilament (a filament), multifilament (a filament woven by a plurality of fibers), and split film (a net filament formed by stretching and splitting a film, commonly called a film filament); the multifilament is selected from the group consisting of long fiber, short fiber multifilament, and plied yarn (a yarn obtained by twisting two or more single yarns); the warp and weft are mostly made of synthetic fiber polypropylene, terylene, chinlon and the like; 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 performance of the filter cloth (including trapping, penetration, regeneration, physical and chemical properties and mechanical properties) determines the precision and filtration rate of solid-liquid separation, and also directly affects the production capacity and power consumption of the filtration equipment.

The existing filter cloth for chemical industry and food has the following defects: 1. and (3) yarn variety aspect: the monofilament filter cloth has poor trapping capacity and low filtering precision; the short fiber multifilament has poor mechanical property, low strength, short service life of filter cloth, frequent replacement and reduced production efficiency; 2. the aspect of the weaving mode is as follows: the plain filter cloth has poor permeability, low air permeability, slow filtration speed, large porosity of the twill filter cloth and low filtration precision; can not meet the requirements of modern large-scale chemical industry and food suspension on high quality (high filtration precision) and high efficiency (high filtration speed) filtration.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defect of current chemical industry and filter cloth for food, solving the poor filter fineness of corresponding monofilament filter cloth entrapment ability and hang down, short-staple multifilament filter cloth intensity low-life is short, the poor filter speed of plain weave filter cloth permeability waits technical problem slowly, through the pilot test that relapses, provides a long fiber multifilament longitude and latitude weight flat arris line filter cloth and corresponding high accuracy pressure filter. Warp and weft yarn weight balancing-refers to a ribbed fabric formed by increasing weave points in the warp and weft directions on the basis of plain weave.

The utility model provides an innovation technical scheme that prior art problem adopted is: a long fiber multifilament longitude and latitude heavy flat ridge filter cloth (hereinafter referred to as multifilament ridge filter cloth) is woven by warps and wefts; the main points of the overall technical scheme are as follows: compared with the prior art, the innovative overall structure has the prominent substantive characteristics that: the existing plain weaving mode is replaced by a warp-weft heavy flat rib weaving mode, the porosity is larger than that of a flat rib, and the permeability and the filtering speed of the filter cloth are improved; the preferable yarn varieties are as follows: long fiber multifilament to ensure the trapping performance and filtering precision of the filter cloth, improve the strength of the filter cloth and prolong the service life; polypropylene fiber materials are preferably selected to ensure the permeation, regeneration and physical and chemical properties of the filter cloth; therefore, the technical problems of poor trapping capability, low filtration precision, low strength, short service life, poor permeability of plain filter cloth, low filtration speed and the like of the conventional filter cloth for chemical industry and food are solved.

The specific design scheme of the compound membrane double-wire filter cloth is as follows: flattening multifilament warp and weft to form ribbed filter cloth; the multifilament warp is 1000D long fiber polypropylene multifilament, and the warp density is 256 yarns/10 cm; the multifilament weft is 1200D untwisted filament polypropylene multifilament, and the weft density is 128 threads/10 cm; the weaving mode of the warp and weft weight plain rib is 1/1 warp and weft weight plain mode, namely, a circulating arrangement mode of warps and wefts is as follows: one interweaving point has two warps floating on the cloth surface and two wefts floating under the cloth surface, i.e. the two warps are on the upper layer of the wefts and the two warps are on the lower layer of the wefts, and the cloth surface has prismatic grains. The multifilament rib filter cloth has good trapping, permeation, physical and chemical properties and mechanical properties, and meets the requirements of large-scale and high-efficiency fine filtration of modern chemical engineering and food suspension.

The utility model also provides a high-precision filter press, which uses the long fiber multifilament longitude and latitude weight flat ridge filter cloth; the filter press mainly comprises a frame, a pressing mechanism, a high-precision filtering mechanism (comprising filter cloth), a plate pulling mechanism, a cloth washing mechanism, a hydraulic driving mechanism, a PLC program control system and the like; the filter plates are arranged on a cross beam of the filter press and are pressed tightly by a pressing mechanism, and the concave parts of the adjacent filter plates which clamp the multifilament rib filter cloth form a high-precision filter mechanism.

The utility model provides a long fiber multifilament longitude and latitude weight flat ridge filter cloth and corresponding high accuracy pressure filter, the remarkable progress is that the multifilament ridge filter cloth has good catching, infiltration, regeneration, physicochemical and mechanical properties; the beneficial effects are that: 1. the long fiber multifilament warp and weft ensure the trapping performance and the filtering precision of the filter cloth, improve the strength of the filter cloth and prolong the service life of the filter cloth; 2. the warp-weft plain-rib weaving mode improves the permeability and the filtering speed of the filter cloth, improves the filtering effect and the production efficiency of the filter press, and meets the requirements of large-scale, high-efficiency and fine filtering of modern chemical engineering and food suspension.

Drawings

FIG. 1 is a schematic diagram of a long fiber multifilament warp-weft heavy flat rib filter cloth pattern.

Fig. 2 is a schematic view of the texture structure of the long fiber multifilament warp-weft heavy flat-edged filter cloth of the present invention.

Reference numerals: 1- -warp, 2- -weft, 11- -warp on top and 12- -warp on bottom.

Detailed Description

The technical solution in the embodiment of the present invention will be described below with reference to the drawings in the embodiment of the long fiber multifilament warp-weft weight flat rib filter cloth and the corresponding high-precision filter press, and the described embodiment is only a preferred embodiment of the present invention, not a complete embodiment. Based on the embodiments of the present invention, all other embodiments without inventive idea made by those skilled in the art, such as the filter cloth with the same multifilament variety and the same weaving manner and different materials, all belong to the protection scope of the present invention.

Example 1

A long fiber multifilament longitude and latitude weight flat rib filter cloth (hereinafter referred to as multifilament rib filter cloth) is composed of multifilament warps 1 and wefts 2 which are flattened into rib filter cloth; the main points of the overall implementation scheme of the innovation are as follows: the existing plain weave mode is innovated to a warp-weft heavy flat rib weave mode, the porosity is larger than that of a flat rib, and the permeability and the filtering speed of plain filter cloth are improved; the preferable yarn varieties are as follows: long fiber multifilament to ensure the trapping performance and filtering precision of the filter cloth, improve the strength of the filter cloth and prolong the service life; the polypropylene fiber material is preferably selected to ensure the permeation, regeneration and physical and chemical properties of the filter cloth. Specific embodiments are described in detail below:

the multifilament warp 1 is 1000D long fiber polypropylene multifilament, and the warp density is 256 yarns/10 cm; the multifilament is a filament formed by a plurality of fibers, has strong trapping capacity and is suitable for filtering small-particle materials; the long fiber multifilament has good mechanical property, can bear higher tensile force, and has long service life.

The multifilament weft 2 is 1200D untwisted filament polypropylene multifilament, and the weft density is 128 threads/10 cm; the multifilament is a yarn formed by a plurality of fibers, namely a non-twisted tow formed by combining filaments spun by a porous spinneret plate, and the non-twisted cloth is soft, has strong trapping capacity and is suitable for filtering small-particle materials; the long fiber multifilament has good mechanical property, can bear higher tensile force, and has long service life.

The polypropylene fiber material is polypropylene multifilament and has light weight (0.91 g/cm)³) The composite material has good permeability and regeneration performance, good physical and chemical properties, wear resistance and corrosion resistance, and strong mechanical properties (short fiber is 4-6 g/denier, and long fiber is 5-8 g/denier).

The weaving mode of the warp and weft weight plain weave is 1/1 (based on plain weave, the weave points are increased in the warp and weft direction), namely, a circulation arrangement mode of the warp 1 and the weft 2 is as follows: one interweaving point has two warps floating on the cloth surface and two wefts floating under the cloth surface, namely two warps 1 are positioned on the upper layer (the upper layer 11) of the weft 2, two warps 1 are positioned on the lower layer (the lower layer 12) of the weft 2, and prismatic grains are arranged on the cloth surface. The warp and weft plain-rib filter cloth has higher porosity than plain threads so as to improve the permeability and the filtering speed of the plain filter cloth.

The weaving equipment used was: the Jingjin environmental protection stockcompany is the biggest filter cloth weaving business in the world at present, uses the heavy rapier weaving machine of denier P1, can change the variety fast, and superstrong beating-up force makes the fabric compactness high, and is easy and simple to handle, and production efficiency is high. The developed untwisted multifilament rib filter cloth is smooth, thick and soft in surface after high-temperature shaping and pricking.

The long fiber multifilament longitude and latitude weight flat ridge filter cloth provided by the utility model has good trapping, penetration, regeneration, physical and chemical properties and mechanical properties after repeated tests; the technical problems that the existing chemical and food filter cloth has poor trapping capability and low filtering precision, short-staple multifilament filter cloth has low strength and short service life, plain filter cloth has poor permeability and low filtering speed and the like are solved; the filter cloth has the advantages of ensuring the trapping performance and the filtering precision of the filter cloth, enhancing the strength of the filter cloth, prolonging the service life of the filter cloth, improving the permeability of plain filter cloth, improving the filtering speed and the production efficiency and obtaining remarkable technical effects in the chemical industry and the food industry.

Example 2

A high-precision filter press uses the long fiber multifilament longitude and latitude weight flat ridge filter cloth; the filter press is an automatic filter press which is integrated mechanically, electrically and hydraulically and intelligently controlled by a PLC (programmable logic controller); the device mainly comprises a frame, a pressing mechanism, a high-precision filtering mechanism (comprising filter cloth), a pulling plate mechanism, a cloth washing mechanism, a hydraulic driving mechanism, a PLC program control system and the like; is suitable for large-scale and high-efficiency fine solid-liquid separation of suspensions in modern chemical and food industries. The utility model discloses technical part common with prior art according to the current standard of china' van-type pressure filter and plate and frame pressure filter part 1: type and basic parameters section 2: technical Condition section 3: filter plate (JB/T4333-2013).

The high-precision filtering mechanism is a core component of a filter press and mainly comprises a head and tail anti-corrosion plate, a filter plate, multifilament rib filter cloth, a cloth clamping distributor, a hole end sealing ring, a filter plate supporting handle and other parts. The multifilament rib filter cloth is a key element of a filter mechanism, and is a filter medium and a sealing element of a sealing surface of a frame of an adjacent filter plate. Assembling the filter cloth and related parts: the filter plate comprises a filter plate, a cloth clamping distributor, a filter plate handle, a pressing mechanism, a hole end sealing ring, a filter plate handle, a filter press cross beam, a high-precision filtering mechanism and a high-precision filtering mechanism, wherein the hole end sealing ring is arranged in a sealing groove of each functional hole end of the filter plate, filter cloth is wrapped on two sides of the filter plate and fixed, the cloth clamping distributor is arranged on a feed hole of the filter plate and used for clamping the filter cloth on the two sides of the filter plate and penetrates through filter chambers on the two sides of.

The low-pressure static filtering process of the high-precision filter press comprises the following steps: the material is pressurized by a feeding pump and is shunted to a filter chamber (between two pieces of filter cloth) through a feeding main channel to carry out low-pressure static filtration, the filter cloth intercepts particles in the material to form a filter cake in the filter chamber, filtrate passes through the filter cloth and flows out from a liquid outlet main channel of the filter chamber (between the filter plate and the filter cloth), and the filter plate is pulled open to realize gravity cake discharge. The single complete operation cycle working process of the filter press comprises the following steps: compacting a filter plate, feeding and filtering, turning a plate to receive liquid, washing and purifying, back blowing materials, blow-drying and purifying, pulling the plate and discharging cakes, and cleaning filter cloth; through a PLC control system, single operation cycle is automatically completed by one key; the intermittent reciprocating circulation work realizes the solid-liquid separation of batch fine materials (chemical products and food suspension).

The utility model discloses high accuracy pressure filter, through the experiment repeatedly, beneficial effect has ensured the entrapment performance and the filter fineness of filter cloth, has improved the permeability and the filter speed of filter cloth, has improved the filter effect and the production efficiency of pressure filter, satisfies modern chemical industry and food suspension extensive, high-efficient meticulous filterable needs.

Claims (2)

1. A long fiber multifilament longitude and latitude weight flat ridge filter cloth comprises warps and wefts; the method is characterized in that: the warp yarns are 1000D long fiber polypropylene multifilament yarns, and the warp yarn density is 256 yarns/10 cm; the weft is 1200D untwisted long fiber polypropylene multifilament, and the weft density is 128 pieces/10 cm; the weaving mode of the warp and weft weight plain rib is 1/1 warp and weft weight plain mode, namely, a circulating arrangement mode of warps and wefts is as follows: one interweaving point has two warps floating on the cloth surface and two wefts floating under the cloth surface, i.e. the two warps are on the upper layer of the wefts and the two warps are on the lower layer of the wefts, and the cloth surface has prismatic grains.

2. A high-precision filter press comprises a frame, a pressing mechanism, a high-precision filtering mechanism, a plate pulling mechanism, a cloth washing mechanism, a hydraulic driving mechanism and a PLC (programmable logic controller) program control system, wherein the filtering mechanism comprises a filter plate and filter cloth; the long fiber multifilament warp-weft plain rib filter cloth is characterized by comprising the long fiber multifilament warp-weft plain rib filter cloth of claim 1; the filter plates are arranged and installed on a cross beam of the filter press, the filter plates are pressed tightly by a pressing mechanism, and the concave parts of the adjacent filter plates which clamp the long fiber multifilament longitude and latitude weight flat ridge filter cloth form a high-precision filter mechanism.

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