Multilayer clarifying thickener

Abstract

The invention discloses a multilayer clarifying thickener. The multilayer clarifying thickener comprises a top frame guiderail, the middle of the top frame guardrail is provided with a drive mechanism, the drive mechanism is fixed on a drive shaft, the drive shaft is equipped with a clarifying barrel, a horizontal fixed mount is welded at the periphery of the clarifying barrel outward horizontally, and a plurality of cofferdams are vertically disposed on the horizontal fixed mount. The bottom of the multilayer clarifying thickener includes a long rake arm set at the left and right and a shortrake arm set at the front and back, both the long rake arm and short rake arm consist of horizontal channel steel and a plurality of scraper plates welded to the bottom of the channel steel, and two adjacent rake arms are connected through horizontal cables. According to the design, through filtration of the multiple layers of cofferdams and horizontal filtering dams, fluctuation of liquid at theupper part of a concentration tank can be effectively avoided, and settlement of fine particles can be promoted. A stereoscopically connected rake frame component can be formed at the bottom, and precipitates can be swept to the middle of the clarifying tank effectively, therefore the thickener provided by the invention is an ideal multilayer clarifying thickener.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to a multi-layer clarification thickener specially used for thickening and cleaning sludge at the bottom of a clarification tank. Background technique [0002] As we all know, the concentrator is a kind of equipment that separates the solid-liquid mixture by gravity sedimentation. It is widely used in chemical industry, metallurgy, papermaking, pharmaceutical, sewage treatment and other fields. [0003] A conventional thickener is composed of a thickening tank, a bridge, a clarifier, a transmission device, a main shaft and a rake frame. Its working principle is: the slurry material that needs to be concentrated is poured into the concentration tank through the clarification tank, the transmission device installed on the bridge frame drives the rake frame to rotate through the central shaft, and the concentrated material is scraped into the cent...

AI Technical Summary

Problems solved by technology

[0004] Because the slurry material contains a large number of fine particles, when the slurry is injected into the thickening tank or the rake is rotated, it will cause disturbance of the upper liquid in the thickening tank, so that these fine particles cannot settle and are discharged through the overflow tank with the clarified liquid, which causes clarification. The solid content of the liquid is high. If it is discharged directly, it will pollute the surrounding environment. If it is recycled, these particles will enter the slurry pump and accelerate the wear of the pump.

[0005] Furthermore, the existing rake frames are divided into double rake frame structure and four rake frame structure. High cost and troublesome to make

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