Screw type solid-liquid separator

Abstract

The invention relates to the solid-liquid separating technology, particularly belonging to a filtering device of environmental protection sewage field. The invention more particularly discloses a screw type solid-liquid separator which comprises a fixed ring, a movable ring and a spiral shaft, wherein the spiral shaft is provided with the fixed ring and the movable ring which are arranged in a staggered way along the radial direction; the movable ring is connected with a guide rod which is connected with a connecting rod; the two ends of the spiral shaft are provided with eccentric sections; the connecting rod is sheathed and connected with the eccentric sections; the spiral shaft drives the eccentric sections to rotate so as to further drive the connecting rod to make eccentric motion; and the guide rod is driven to make linear motion in a guide rail by the eccentric motion of the connecting rod, so that the movable ring is driven to move. The motion of the movable ring of a filtering body is realized by the eccentric motion of the connecting rod and the guide rod driven by the eccentric sections, so that the problem of abrasion between the movable ring and a spiral shaft blade can be fundamentally solved, and the durability and the practicability of the separator can be greatly improved. The screw type solid-liquid separator is applicable to large, medium and small-sized sewage treatment plants.

Description

Technical field [0001] The invention relates to a solid-liquid separation technology, in particular to a filter device in the field of environmentally friendly sewage. Background technique [0002] Chinese invention patent CN2762865Y discloses a laminated spiral filter on March 8, 2006. It includes a spiral shaft. A plurality of circulating laminations are sheathed outside the diameter of the blade of the spiral shaft. The multiple circulating laminations are formed by a fixed ring. , Moving ring, adjusting block, the arrangement of multiple circulating laminations is arranged between every two fixed rings, there is an adjusting block and a moving ring, the inner diameter of the fixed ring is larger than the outer diameter of the blade of the screw shaft, and the inner diameter of the moving ring is smaller than the screw shaft The outer diameter of the blade, the inner diameter of the moving ring is covered with notches larger than the outer diameter of the screw shaft blade, th...

AI Technical Summary

Problems solved by technology

[0004] 1. The inner diameter of the moving ring is smaller than the outer diameter of the screw shaft blades, and the moving ring always rubs against the screw shaft blades, especially under the action of strong sludge internal pressure during dehydration, this friction is like a file, constantly filing, greatly reducing the durability and usefulness of the unit

[0005] 2. Since the blades of the screw shaft are always against a point on the inner diameter of the moving ring for circular motion, the two not only bear a considerable friction force, but also the moving ring also bears a considerable deformation force. Therefore, it cannot be applied to large and medium-sized specifications. Sewage treatment plant

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