Feed distributor acceleration cone for horizontal screw discharge decanter centrifuge

Abstract

The invention discloses an acceleration cone of a feed distributor of a horizontal spiral unloading sedimentation centrifuge. The discharge port and the drainage hole on the surface of the spiral core tube, the acceleration cone includes a vertebral body welded together with the spiral core tube, a distribution plate welded together with one end of the vertebral body, and the other end of the vertebral body is open. A number of anti-wear grooves are provided on the surface of the inner cavity of the vertebral body, two grooves are provided on the side of the distributing tray close to the inner cavity of the vertebral body, and an annular partition is arranged between the short axis of the spiral and the acceleration cone. The invention optimizes the design of the feed distributor of the horizontal spiral unloading sedimentation centrifuge, accelerates the rotation of the mixed material in advance, eliminates the turbulence of the liquid flow, reduces the friction between the mixed material and the discharge port, and reduces the friction between the mixed material and the outer wall of the spiral core tube. The wear of the pushing blades significantly improves the separation factor, extraction rate and safety factor of the horizontal screw discharge decanter centrifuge.

Description

technical field [0001] The invention relates to the field of centrifuges, in particular to an acceleration cone of a feed distributor of a horizontal spiral unloading settling centrifuge. Background technique [0002] Horizontal screw discharge decanter centrifuge (hereinafter referred to as decanter centrifuge) is mainly composed of drum body, differential gear and other components. The basic principle of its work is: when the material to be separated enters the separation area of ​​the centrifuge drum through the inner cavity of the screw through the feed pipe, a strong gravity acceleration (centrifugal force) is generated in the high-speed rotating drum, and the relative density of the material is reduced. Larger solid phase particles quickly settle to the inner wall of the drum. Due to the different speeds of the screw body and the drum body, there is a relative motion between the two (that is, the difference in speed). The phase particles are pushed to the slag outlet ...

AI Technical Summary

Problems solved by technology

After the material enters the spiral cavity through the feed pipe under the feed pressure, the liquid flow will be scattered disorderly after hitting the feed distributor, and will be discharged from the discharge port quickly. In addition, due to the presence of The acceleration process of the rotating line speed makes the material distribution uneven, the flow of the mixed liquid of the material is turbulent, etc., resulting in a large solid content in the separated clear liquid, increasing the wear of the spiral pusher blade, and many other problems.

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