An anti-jamming grate sieve

Abstract

The invention relates to material screening equipment, in particular to anti-jamming grate-bar slide screen which is used for separating a coarse material from a fine material. The slide screen comprises a screen plate, wherein the screen plate is mounted on an external fixture and inclined to the horizontal plane in a material slipping direction; one end of the screen plate is positioned below the feed opening; discharge openings are formed in the other end of the screen plate; a plurality of grooves with are formed in the screen plate in the material slipping direction, one end of each groove is open; grate bars are formed between adjacent grooves; the open ends of the grooves are the discharge openings of the screen plate; the widths of the shadows, on the horizontal plane, of the grooves gradually increase in the material slipping direction; the widths, on the cross sections of the screen plate in the thickness direction of the screen plate, of the grooves gradually increase from the top down; the ends, below the feed opening, of the grate bars are wider than those, at the discharge openings, of the grate bars; and the upper parts of the grate bars are wider than the lower parts of the grate bars in the thickness direction of the grate bars. The slide screen is free from a material-jamming phenomenon, has the advantages of great load-bearing capacity, abrasion resistance, simplicity in maintenance, space saving, no electricity consumption and high use value, can feed materials in categories, and realizes the close-range combination of the equipment.

Description

technical field [0001] The invention relates to material screening equipment, in particular to an anti-jamming grate sieve, which is used for screening materials with coarse and fine materials. Background technique [0002] Existing screening equipment mainly adopts the mode of vibrating screen, and the downward sliding and screening of materials mainly rely on the strong vibration of vibration source, which impels the coarse material and fine material particles of the screened material to produce segregation; as published by China Construction Industry Publication No. ISBN7-80090-342-7 / TH·12, Chapter 2 of Chapter 4 of "Crushing Engineering and Equipment", published by China Press in November 1994, and published on May 2, 2012, with publication number 102430517A, The Chinese invention patent "a vibrating sieve" with application number 201110410605.4. The sieves used in the above-mentioned screening equipment are vibrating screens of different shapes or structures and equidi...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of the above-mentioned vibrating screens and equidistant grate screens, such as severe material jamming and large space occupation, the object of the present invention is to provide an anti-jamming grate screen

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