A new type of hydraulic grading two-stage curved screen

Abstract

The invention discloses a novel hydraulic classification two-section sieve bend which comprises a sieve box. A feeding and distributing box is arranged on the upper portion of the sieve box. An arc sieve face is arranged inside the sieve box and divided into a first-section arc sieve face and a second-section arc sieve face from top to bottom. The upper end of the first-section arc sieve face is connected with a discharging port of the feeding and distributing box, a middle material collecting groove is formed between the lower end of the first-section arc sieve face and the upper end of the second-section arc sieve face, a conic porous sieve plate is arranged at the bottom of the middle material collecting groove, the lower side of the conic porous sieve plate is connected with a water flow supplementing pipe, and an underflow discharging valve is arranged in the center of the conic porous sieve plate. According to the novel hydraulic classification two-section sieve bend, the sieve face is divided into the upper section and the lower section, the middle material collecting groove is additionally formed between the two sections of sieve faces, and ascending water flow with a certain flow speed is supplied to the inner portion of the middle material collecting groove, so that the shortage that transportation is influenced due to the fact that material moisture rapidly permeates through a traditional sieve bend through cutting is overcome, remaining materials on the sieve face can be collected in time, the phenomenon of material accumulation is avoided, and the effective use rate of the sieve face is guaranteed.

Description

technical field [0001] The invention relates to the technical field of mineral processing equipment, in particular to a new two-stage screening device with large processing capacity, high screening efficiency, and relying on rising water flow to prevent material accumulation. Background technique [0002] The operation of dividing the mixture of different particle sizes into various particle size levels with a screen surface with holes is called screening. Screening operations are widely used in ore dressing, coal preparation, construction, chemical industry, light industry and other departments. According to the structure and motion of the screen surface, the commonly used screening machines at home and abroad can be divided into the following types: fixed screen, drum screen, vibrating screen, centrifugal screen, relaxation screen, etc. Among them, the curved screen is a kind of fixed screen, which has simple structure, easy installation, long service life, especially no ...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the invention is to overcome the problem of easy accumulation of materials existing in traditional curved screens, and provide a new type of screening device with large processing capacity, high screening efficiency, and relying on rising water flow to prevent material accumulation

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