Solid-liquid separation device

Abstract

The invention discloses a solid-liquid separation device, and relates to the technical field of solid-liquid separation. The solid-liquid separation device comprises fixed rings, floating rings, screw conveyors, a driving device and a filter cartridge; the filter cartridge comprises a plurality of fixed rings arranged at intervals in the axis direction and the floating rings arranged in gaps among the fixed rings; the screw conveyors are sleeved with the fixed rings and the floating rings; lead screw bearings and spiral blades arranged on the peripheries of the lead screw bearings are arranged in the screw conveyors; each lead screw bearing is provided with a conical part extending from the base end to the other end, a cylindrical part formed at the other end of the conical part and a miniature cylindrical part formed by extending from the base end of the conical part to one end; the conical parts arranged in the fixed rings and the floating rings form a concentration region; the cylindrical parts arranged in the fixed rings and the floating rings form a dehydration region; and in a barrel-shaped body formed by the fixed rings and the floating rings, by configuring the screws conveyor with the conical parts and the cylindrical parts, the liquid rate in solid can be reduced, and the solid removal rate can be improved.

Description

Technical field [0001] The present invention relates to the field of solid-liquid separation techniques, and more particularly to a solid-liquid separation device. Background technique [0002] Since the food processing drainage, wastewater treatment plant or the pig farm is discharged, the wastewater, which contains cutting oil, refinery, electroplating waste liquid, ink wastewater, pigment waste, coating waste liquid, etc. Solids and liquids for vegetable waste and fruit skin, food residue, etc. are usually isolated using solid-liquid separation equipment, and solid-liquid separation equipment is also widely used in municipal sewage treatment projects and petrochemical, light industry, chemical fiber, paper, Among the water treatment systems such as pharmaceutical, leather and other industrial industries, CN202020215637.3 discloses a solid-liquid separation device for livestock and poultry stains, replacing a conventional filter cloth and centrifugal filtration mode in a unique...

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Problems solved by technology

[0002] For a long time, organic sludge such as food processing drainage, wastewater from sewage treatment plants or pig farms, cutting oil containing cutting chips, oil refineries, electroplating waste liquid, ink waste water, pigment waste liquid, paint waste liquid and other inorganic sludge , or vegetable waste, fruit peels, food residues, etc. are usually separated by solid-liquid separation equipment. Solid-liquid separation equipment is also widely used in municipal sewage treatment projects and petrochemical, light industry, chemical fiber, paper, In the water treatment system of industrial industries such as pharmaceuticals and leather, CN202020215637.3 discloses a solid-liquid separation device for livestock and poultry manure, which replaces the traditional filter cloth and centrifugal filtration methods with a unique and subtle filter pattern. The filter cloth of the traditional screw extrusion dehydrator is replaced by the mutual cooperation of the movable ring and the fixed ring, which effectively avoids the problem of clogging, but there are many problems. The volume of the final solid to be processed becomes larger, which makes handling and handling extremely difficult, and greatly increases the cost of handling and handling. Therefore, in the field of solid-liquid separation equipment, it is an urgent task for those skilled in the art to reduce the liquid content in solids. The technical problem to be solved, in addition, if the solid content in the liquid after solid-liquid separation is high, the solid content needs to be removed from the liquid when processing the liquid, which is time-consuming and labor-intensive, and when in use, the gap between the fixed rings will move The ring is easily detached from the fixed ring, which affects the use of the whole. Therefore, it is a technical problem to be solved urgently by those skilled in the art to avoid the solid from being mixed in the liquid, to improve the solid removal rate, and to prevent the floating ring from being separated from the fixed ring.

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