Squirrel-cage vibration-free sizing screen

Abstract

The invention provides a squirrel-cage vibration-free sizing screen, belonging to a physical sorted sizing screen. The vibration-free sizing screen comprises a rack, a plurality of rolling cages and a power transmission device; wherein, the cages are arranged on the rack side by side; the base of the rack forms an included angle with the plane; the power transmission device is connected with one end of the cage. In the vibration-free sizing screen, a plurality of rolling cages are successively arranged on the rack side by side, gaps are left between rolling cages, eligible crushed coal is selected into minus sieve coal bunker when raw coal passes through the rolling cages, and the larger coal and waste rock are sent to the next working procedure. The sizing process is vibration-free with higher efficiency. The vibration-free sizing screen in the invention has the advantages of light self weight, good permeability, high rate through screen, high efficacy and good sizing capability; due to the chain wheel design, the screen also avoids the phenomena of elastic slide and slipping, has accurate transmission ratio and strong overload capability and is easy to change grate bars; the screen also can save energy greatly with low noise and small environmental pollution, reduces harmfulness on human body and provides an ideal working environment for personnel.

Description

technical field [0001] The invention relates to a grading sieve for physically sorting gangue or lump coal in lumpy raw coal, in particular to a squirrel-cage non-vibration grading sieve. Background technique [0002] At present, in coal mine washing plants, the sieves used generally use the working principle of centrifugal force. The motor makes the eccentric block and eccentric shaft of the oscillator rotate at a high degree through the coupling, and the centrifugal force generated by the circular track of the rotating eccentric block makes the screen box produce a certain amplitude. During the sieving process, the particles smaller than the sieve hole pass through the sieve, and the particles larger than the sieve hole are filtered to the next level of sorting equipment. During the sorting process, since the bottom of the sieve is always in a vibrating state, there is a lot of noise, the power of the equipment is large, and the energy consumption is high. In addition, th...

AI Technical Summary

Problems solved by technology

During the sorting process, since the bottom of the sieve is always in a vibrating state, there is a lot of noise, the power of the equipment is large, and the energy consumption is high

In addition, this kind of equipment is bulky, the installation and replacement of the sieve is very cumbersome, the labor intensity of the workers is high, the maintenance is difficult, and the sieve penetration effect is poor.

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