Roll crusher in the gravel mining industry applications are more prominent, and its comparison with jaw crusher for crushing of hard stone effect is particularly significant. Roll crusher can be divided into single and double roll crusher roller crusher according to the roller quantity . Here KEFID application engineers more frequent double roll crusher for you to explain in detail how it works and comprehensive technical structure .

Double roll crusher , the crusher unit is a pair of cylindrical rollers , they are parallel to each other horizontally mounted on the frame , the front roller and a rear roller for opposite rotation. Material added to the feed tank , at the fall of the roller , the lower roller is drawn into the surface of the frictional force between the rolls by pressing the roller and grinding. Crushed material is rotated downward unloading roller launch off . So , roll crusher is continuous , and the role of mandatory discharge of crushed material is not caused by the wet sticky jam .

Double roll crusher crushing force of its powerful analysis from the structure . Roller mounted on a welded frame ; installed in the roll axis roll core and set in on the roller sleeve roll core components. By using the tension between the two ring cone bolt tensioning roller sleeve sleeve so that the roll core. When the surface of the roller sleeve work wear , easy to replace them . Shaft mounted in the front roll roller bearings, bearing fixed on the rack. The roller bearing is mounted in the rack rails can be moved back and forth on the rail. This bearing with strong spring-loaded in the top seat. When two hard rolls debris falls , the spring is compressed a predetermined distance after the roller makes it difficult to move debris falling under spring tension and then resumed to its original position . Spring pressure adjustment nuts available . Between the bearing and the top seat placed replaceable pads, you can adjust the distance between the two rollers of different thickness by replacing the gasket.

The main advantage of the roll crusher is: simple structure , the body is not high , compact, lightweight , low cost , reliable, easy to adjust the crushing ratio , can be crushed sticky and wet materials. The main disadvantages are: low production capacity required to feed the material to a uniform continuous total length of the roller , otherwise uneven wear of the rollers , and the resulting particle size is not uniform and frequent repairs.