CN-121992554-A - Complete set of monofilament lining cloth, multifilament filter cloth and corresponding membrane filter press for sewage

Abstract

The invention discloses a complete set of monofilament lining cloth, multifilament filter cloth and a corresponding membrane filter press for sewage, which has the main points that the monofilament lining cloth is polypropylene monofilaments, warp and weft are all 0.5mm thick monofilaments, the radial and weft densities are 65 pieces/10 cm, a weaving method of upper and lower plain weave is adopted, the multifilament is 500 denier (145T/S) polypropylene multifilament, the warp density is 256 pieces/10 cm, the weft density is 145 pieces/10 cm, the cloth surface adopts two upper and lower twill structures, the two filter cloth is used in a complete set, compared with the surface of a filter plate, the lining cloth is arranged on the lower multifilament filter cloth, and the membrane filter press for sewage is used for the complete set of filter cloth, so that the filtering speed of the filter press is improved, the service life of the filter cloth is prolonged, the filter cloth is not adhered to the filter plate chord any more, and cake removal and unloading are easy.

Inventors

• WANG XUNQIANG
• WANG RUIFENG
• LI RU
• LI NING
• WANG JING

Assignees

• 景津装备股份有限公司

Dates

Publication Date

20260508

Application Date

20260311

Claims (2)

1. 1. A complete set of monofilament lining cloth and multifilament filter cloth comprises warps and wefts, and is characterized in that the monofilament lining cloth is formed by interweaving warps and wefts in a changing mode, the warps are 0.5mm thick polypropylene monofilaments, the warp density is 65 pieces/10 cm, the wefts are 0.5mm thick polypropylene monofilaments, the weft density is 65 pieces/10 cm, the weave structure of the filter cloth is that a weaving method of upper and lower plain weave is adopted, namely, one circulation arrangement mode of the warps and the wefts is that the warps are located at the upper layer 1 weft of the wefts, the warps are located at the lower layer 1 weft of the wefts, the warp density is 256 pieces/10 cm, the warps are 500 denier twist 145T/S polypropylene multifilament, the weft density is 145 pieces/10 cm, the weave structure of the filter cloth is that the cloth surface adopts a two-up and two-down weave, namely, one circulation arrangement mode of the warps and the wefts is that the warps are located at the upper layer 2 weft of the wefts, the wefts are located at the lower layer 2 weft of the wefts, and the air permeability is 5326-39L/26-L/39-160/L/160/L.
2. 2. A membrane filter press for sewage mainly comprises a frame, a hydraulic pressing mechanism, a squeezing filter mechanism, a complete set of filter cloth, a pulling plate mechanism, a cloth washing mechanism, a vibrating mechanism, a liquid receiving and turning plate mechanism and a PLC program control system, wherein a plurality of membrane filter plates and box filter plates are arranged at intervals to form a filter chamber of the squeezing filter mechanism.

Description

Complete set of monofilament lining cloth, multifilament filter cloth and corresponding membrane filter press for sewage Technical Field The invention belongs to the technical field of membrane filter presses, and relates to a complete set of precision filter cloth. Background The filter press is a pressurized filtration device with a plurality of filter chambers intermittently operated; A membrane filter press is a filter press which consists of a plurality of membrane filter plates and box plates which are alternately arranged to form a filter chamber, and is used for primary low-pressure static filtration, secondary high-pressure bulge membrane filter plates and extrusion filter cake dehydration, and the membrane filter press for sewage is widely applied to the sludge dehydration treatment of industries such as urban domestic sewage, printing and dyeing, papermaking, food processing, petrochemical industry and the like at present, is a special precise membrane filter press, and mainly consists of a frame, a hydraulic pressing mechanism, a squeezing and filtering mechanism, a plate pulling mechanism, a cloth washing mechanism, a vibrating mechanism, a liquid receiving turning plate mechanism and a PLC program control system, and is suitable for solid-liquid separation in the sewage industry. The industrial filter cloth is a filter medium and a sealing gasket of an adjacent filter plate, is a core filter element of a filter press and is formed by weaving warp yarns (threads parallel to cloth edges) and weft yarns (threads perpendicular to the cloth edges), wherein the weaving method (weave structure) comprises plain weave, twill weave and satin weave, non-woven needling molding is carried out, the varieties of the warp yarns and the weft yarns comprise monofilaments (one silk) and multifilaments (one silk is woven by a plurality of fibers), the varieties of the multifilaments comprise long-fiber multifilaments, short-fiber multifilaments and ply yarns (strands formed by twisting two or more single yarns), the materials of the warp yarns and the weft yarns are mainly synthetic fiber polypropylene fibers, polyester fibers, chinlon fibers and the like, and the weave structure and the yarn varieties of the filter cloth are different in performances and are suitable for solid-liquid separation of different suspensions through intermediate tests. The properties of the filter cloth (including trapping, permeation, regeneration, breaking strength and mechanical properties) determine the accuracy and filtration rate of solid-liquid separation, and also directly influence the production capacity and power consumption of the filtration equipment. The existing filter cloth used in the filter press sewage industry has the following defects that 1, in order to ensure the permeation and mechanical properties of the filter cloth, a polypropylene multifilament twill filter cloth is commonly used, but the filtering speed is low, and the service life is short, 2, the existing filter cloth tissue structure (weaving mode) enables the filter cloth to permeate and regenerate, the filter cloth is extruded and is often closely attached to a filter plate string, so that cake unloading is difficult, the production efficiency is seriously affected, and 3, the filter cloth used in the existing filter press sewage industry cannot meet the requirements of high-efficiency and large-scale filtration in the modern sewage industry, and is a technical problem which is long desired to be solved but is not successful all the time. Disclosure of Invention The invention aims to overcome the defect that filter cloth is used in the sewage industry of the existing filter press, solve the technical problems that the polypropylene multifilament twill filter cloth has poor trapping, penetrating and regenerating performances and cannot meet the high-efficiency and large-scale filtration in the sewage industry, and provide a complete set of monofilament lining cloth, multifilament filter cloth and a corresponding membrane filter press for sewage, namely, two kinds of cloth are covered on a filter plate at the same time, the polypropylene multifilament lining cloth is attached to the surface of the filter plate, and the polypropylene multifilament filter cloth is used for the outer layer. The invention solves the problems in the prior art by adopting an innovative technical scheme that 1, single sewage industry filter cloth with diaphragm filter plates and box filter plates of a diaphragm filter press is used in a matched mode, namely, a complete set of monofilament lining cloth and multifilament composite filter cloth is innovated, and the complete set of monofilament lining cloth and multifilament composite filter cloth are respectively used in a matched mode with the complete set of diaphragm filter plates and box filter plates, so that the complete set of monofilament lining cloth and multifilament composite filter cloth has good trapping, penetratin