Accurate hydraulic classifier

Abstract

The invention relates to an accurate hydraulic classifier which comprises a classifying chamber. A bottom plate of the classifying chamber is an inclined plate. The inclined plate inclines upwards in the material advancing direction. Filtering plates are mounted at the connection parts, with discharging pipes, of the bottom plate, and shield connection ports, with the discharging pipes, of the bottom plate. The filtering plates are made of mesh materials. The sizes of meshes in the filtering plates are gradually reduced in the material advancing direction. The filtering plates are driven by driving machines to rotate freely around self rotating shafts. The rotating shafts of the filtering plates are mounted on the bottom plate. The filtering plates are parallel to the bottom plate. A water inlet net is mounted in the inner cavity of the classifying chamber. Spray holes are formed in all nodes of the water inlet net upwards vertically. The water inlet net communicates with a water inlet pipe. The accurate hydraulic classifier can be used for accurately classifying settling materials, so that the uniformity of particles in return sand is effectively improved, subsequent operation is facilitated, and besides, the blocking possibility of a discharge opening is reduced.

Description

technical field [0001] The invention relates to an industrial grading device, in particular to a hydraulic classifier. Background technique [0002] At present, the principles of the industrial hydraulic classifiers used in the market are all based on the principles of fluid mechanics. According to the different particle sizes and specific gravity of solid particles, under the action of external forces, their sedimentation speeds in the liquid are different, so as to realize the material Separated according to particle size and specific gravity, fine-grained or small specific-gravity solid particles are suspended in the liquid and become overflow, coarse-grained or large-specific solid particles settle at the bottom of the tank, and are discharged along the sand discharge device to realize continuous separation of materials A kind of grading equipment; in many beneficiation operations, hydraulic grading plays an important role; [0003] However, due to the instability of ...

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Problems solved by technology

[0003] However, due to the instability of the rising water flow, the shape of the material particles, the state of fluid movement and other factors, the current hydraulic classifier cannot accurately classify the material particles during the working process, which makes the reaction from the discharge port The sand material is mixed in thickness, which affects the follow-up operation; at the same time, the mixed particles are easy to block the discharge port, which will shorten the service life of the classifier

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