Double Roll Crusher for Hardness Material

Crusher refers to the crushing machinery whose discharge size greater than three millimeters is more than 50% of total discharge material, and the double roll crusher is one kind of crusher. Double roll crusher is formed with press and adjust device, roller bearing, roller support bearing, as well as drive devices with characteristics of reliable work, easy to be maintenance, low operating costs, large crushing ratio, uniform particle size product, simple structure, etc.
    Double roll crusher is one kind of crusher which bites material to crushing area with its surface friction   to crush by squeezing or splitting. When double roll crusher is in work or the crushing ratio needs to be increased, teeth or grooves will be often made on the roll surface to increase the splitting effect. Roll crusher can be usually divided into single roll , double roll and multi-roll crusher according to the number of roller, and it is mainly used for crushing brittle mines and rocks with medium or lower rigidity like coal , limestone , cement clinker and feldspar, it is also widely used in the cement, chemical , electric power, metallurgy, building materials , refractory and other industries to crush medium hardness materials, such as limestone, coke, coal and so on.
    Wedge or gasket adjusting device are equipped between the two rollers of crusher, and the top of the wedge device is equipped with the adjustment bolt, so when adjustment bolt pulls up the wedge, the wedge will move the roof roller away from the fixed wheel, that is, the gap between the two rollers becomes larger, and the discharging size becomes larger; while when the wedge falls down, the rollers decrease the gap between the two rollers under the compression from the spring, and the discharging size becomes smaller. The gaskets device is adjusted by changing the quantity or thickness of the gasket material particle size, when gasket increases, the gap between the two rollers becomes larger; and when gasket...