Crusher is often to do work under the condition of heavy load and in the bad environment of dusty, in order to guarantee safety and reliability of the crusher in the process of operation, crusher must meet the following requirements:
(1) The drive device, inlet and outlet of crusher must have safety device;
(2) The crusher must have reliable dustproof device and dust removal device;
(3) The crusher shall have a simple and effective insurance device;
(4) The structure of the crusher ensures all of worn parts should be replaced quickly and easily, especially the crushing parts. The number of these parts should be less, the weight of each component is not too big, and its shape should be easy to manufacture and maintain;
(5) The crusher should have one device that quick and easy to change the crushing ratio, namely adjusting device of outlet;
(6) The largest diameter of feed opening should be smaller than the width of the feed opening by 10-20%. The feeding and discharging should be continuous.