High-efficiency helical material pushing apparatus of horizontal helical centrifuge

Abstract

An obstruction preventing device of a horizontal spiral centrifuge comprises a feed tube, a main shaft and a frame. The feed tube is fixed on the frame and is mounted in the inner pore of the feeding terminal of the main shaft by an obstruction preventing sleeve. The inner pore of the obstruction preventing sleeve is a screw pore, and the right end thereof is provided with a flare shape. Since the feed tube is fixed on the frame and is mounted in the inner pore of the main shaft by an obstruction preventing sleeve, the solid-liquid mixture in the feeding chamber permeates into the space between the feed tube and the obstruction preventing sleeve during operation, the obstruction preventing sleeve spin with the main shaft to push the solid-liquid mixture permeating into the space between the feed tube and the obstruction preventing sleeve into the feeding chamber, so that permeation of the solid-liquid mixture into the space between the feed tube and the obstruction preventing sleeve is prevented effectively, friction of solid particle in the solid-liquid mixture to the feed tube is reduced, and obstruction between the feed tube and the main shaft is removed. In practical validation, during the centrifuge operation, it is provided with smoothly feeding, without obstruction, and the feed tube is not easily worn.

Description

technical field [0001] The invention relates to a decanter centrifuge, in particular to a screw pusher of the decanter centrifuge. Background technique [0002] Decanter centrifuge is a fully enclosed equipment capable of continuous solid-liquid separation. Compared with plate-and-frame filter press and belt filter press, it has the advantages of small footprint, low capital construction cost, large processing capacity, and high separation efficiency. The effect is good, there is no need to wash with water during work, it can realize clean processing, and it is easy to operate. Decanter centrifuges include casing, bearing housing, differential, drum, screw pusher, feed pipe, screw pusher is composed of main shaft and screw pusher, it is a good static and dynamic balance And its outer circular surface is equipped with a high-precision shaft-shaped part of the spiral piece, and one end of the main shaft is provided with a shaft hole for the feeding pipe to enter, and the lead...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing screw pushers are all composed of a main shaft and a screw pushing piece, and the screw pushing piece is fixed on the outer surface of the main shaft with leads, and in the settlement zone, the outer circle of the screw pushing piece is the same, and the drying In the area, the screw pushing tablets are distributed in a conical shape. When the solid-liquid mixture is pressed into the space between the screw pushing tablets in the settling area from the discharge port, due to the high-speed rotation of the screw pusher, under the action of centrifugal force, the solid In the separation of liquid, the solid is distributed on the outer edge of the screw pusher, and gradually advances to the drying area under the rotation of the screw pusher, and finally pushes out from the solid phase port; while the liquid moves along the inner circle of the screw pusher. It flows to the liquid phase outlet at the leftmost end of the settling area. Since the screw pusher is a continuous strip, the solid phase is concentrated at the outer end of the screw pusher, which is not conducive to the flow separation of the liquid phase, so the solid-liquid separation is not complete. If To achieve a higher separation effect, it is necessary to further increase the speed of the screw pusher, which not only consumes more energy, but also improves the machining accuracy of the screw pusher, which is a common technology in existing decanter centrifuges problem

Images