Spiral sieve with buffering type feeding channel

Abstract

The invention discloses a spiral sieve with a buffering type feeding channel. The spiral sieve comprises a machine body and the feeding channel. The machine body is composed of three sections of unitsthe same in structure, and the three sections of units are arranged in a ladder-like manner and include the first unit, the second unit and the third unit from top to bottom in sequence. Each unit comprises a supporting frame and a sieve box. A material inlet is formed in the upper end of the first unit, the upper end of the material inlet is connected with a feeding barrel, and the feeding channel is vertically arranged in the feeding barrel and is spirally arranged. The lower end of the feeding channel is provided with a guide-out port, the guide-out port is correspondingly formed over thesieve box in the first unit, a plurality of electric heating pipes are evenly arranged on the inner wall of the feeding barrel and connected with a heater through wires, and the heater is arranged onthe outer side of the feeding barrel. By means of the above manner, the spiral sieve can reduce the material feeding speed, and spiral shaft abrasion caused when materials collide with the sieve faceis prevented.

Description

technical field [0001] The invention relates to the field of screw screens, in particular to a screw screen with a buffer feeding channel. Background technique [0002] Spiral screen is mainly used in coal mining enterprises, coal preparation plants and power plants for screening and grading dry and wet coal. It can not only show high efficiency in screening dry materials, but more importantly, it can screen wet sticky materials, especially There is no blocking of the sieve hole when the fine-grained wet sticky material is present, and the screen penetration rate is high. It is currently a novel equipment in my country to solve the problem of wet sticky coal that cannot be graded smoothly. The traditional spiral screen feeds the material through the feeding trough, lacks buffer protection, and the material falls The high-speed impact on the screen surface will easily cause the wear of the screw shaft and affect the service life of the machine. Contents of the invention [0...

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Problems solved by technology

[0002] Spiral screen is mainly used in coal mining enterprises, coal preparation plants and power plants for screening and grading dry and wet coal. It can not only show high efficiency in screening dry materials, but more importantly, it can screen wet sticky materials, especially There is no blocking of the sieve hole when the fine-grained wet sticky material is present, and the screen penetration rate is high. It is currently a novel equipment in my country to solve the problem of wet sticky coal that cannot be graded smoothly. The traditional spiral screen feeds the material through the feeding trough, lacks buffer protection, and the material falls High-speed impact on the screen surface will easily lead to wear of the screw shaft and affect the service life of the machine

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