Self-cleaning solid-liquid separation device

Abstract

The invention discloses a self-cleaning solid-liquid separation device. The self-cleaning solid-liquid separation device comprises a base, a blowdown tank and a support shell, wherein the blowdown tank is fixed to the top end of the base through second supporting legs; the support shell is fixed to the top end face of the base through first supporting legs; a screen drum is arranged in the support shell; a rotating shaft is arranged in the screen drum; a large diameter end of the rotating shaft is fixedly connected with a transmission shaft; an extrusion spiral fin matched with the screen drum is arranged on the rotating shaft in a sleeving manner; a substrate is arranged on the left side of the top end of the base; a motor is fixedly connected on the substrate; a first driving wheel and a second driving wheel are arranged on a motor shaft of the motor in a sleeving manner; a drainage pipe is connected at the bottom of the right side end of the support shell in a penetrating manner; a washing shaft is arranged at the bottom of an inner cavity of the support shell; and a fur brush matched with the screen drum is arranged at the other side end of the washing shaft in a sleeving manner. According to the self-cleaning solid-liquid separation device, sieve holes are of cone-shaped structures, extruded sludge can hardly block the sieve holes during the extrusion process, the washing shaft rotates at a high speed under the driving of the motor, the fur brush is driven to clean the sieve holes, and the sieve holes can be effectively prevented from being blocked.

Description

technical field [0001] The invention relates to the technical field of sludge treatment equipment, in particular to a self-cleaning solid-liquid separation equipment. Background technique [0002] Sewage treatment plants produce a large amount of sludge every day, and if the sludge is not treated properly, it will cause secondary pollution. The general treatment process is: pre-dehydration-drying dehydration-incineration, wherein the pre-dehydration is to dehydrate the sludge with a water content of more than 90% to a water content of less than 50%. The pre-dehydration method generally uses a filter press for press dehydration, and also uses a variable-pitch screw shaft for press dehydration. When using a filter press for dehydration, it works intermittently. When the filtered sludge filter cake reaches a certain thickness, it needs to be shut down for cleaning. Low moisture content, uneven moisture content, the screw shaft press dehydration equipment is a continuous dehydr...

AI Technical Summary

Problems solved by technology

The pre-dehydration method generally uses a filter press for press dehydration, and also uses a variable-pitch screw shaft for press dehydration. When using a filter press for dehydration, it works intermittently. When the filtered sludge filter cake reaches a certain thickness, it needs to be shut down for cleaning. Low moisture content, uneven moisture content, the screw shaft press dehydration equipment is a continuous dehydration method, but the holes of the sieve plate are easily blocked, which reduces the dehydration efficiency; if the holes of the sieve plate are washed with clean water under high pressure, a large amount of water resources will be wasted, and the rain is becoming more and more serious The problem of lack of water resources in the

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