Products 
 Roll crusher have two kinds of Double Roll Crusher and Four Roll Crusher, Double Roll Crusher mechanical spring-loaded, the device according to the crushing of material properties and requirements were equipped with coarse teeth roll or Roll, Roll crusher by two Double Roll Crusher combination; Roll crusher for coal, metallurgy, mining, chemicals, building materials and other industries, as well as a large coal mine or coal preparation plant raw coal containing waste rock broken; Roll crusher capacity limit from the fluid coupling connected between the motor and reducer, to prevent power overload, sensor overload protection, safe and reliable. Roll spacing hydraulic adjustment of the toothed roller bearings centralized lubrication. The optimized tooth design, select the broken pull shear, high efficiency and low consumption, the particles evenly. 

 Performance characteristics 
 Screening and crushing the dual function 
 Materials First two teeth roller fixed installation, their relative motion as a rotation of the grid screen to meet the size requirements for initial screening by the Roll or Roll liner clearance to leave out, thus avoiding that part of the material after roller The tooth is then broken, not only reduces the material had broken rate and energy consumption, reduced the time of roll teeth broken and extended service life. At the same time Roll Differential opposite operation, with the shear and tensile cracking effect. The movement of the roller gear also makes the material broken after the forced discharge, is not easy to produce congestion, and thus suitable for sticky material containing higher moisture content in the material. 
 Two teeth and roll non-round, non-engagement, non-constant operation 
 This feature greatly increase the shear of the mineral aggregate crushing effect, reduce the clogging of the toothed roll crusher at home and abroad exist. 

 3 double overload protection 
 Impact force constant filling fluid coupling on the one hand absorbed broken the machine running smoothly, the other hand, the whole play a security role, once inside the device stuck or overloaded, the fluid coupling is automatically cut off power transmission, the motor idling, the motor and the large and small Roll play a protective role; the aircraft is equipped with a movable jaw buffer device, Roll crushing force overload will force compression spring radial horizontal relocation to increase tooth the gap between the roller and the jaw plate, Roll and jaw body has protective effects. 
 4 assembly is flexible, easy maintenance 
 Roll the shaft assembly broken ring gear, the toothed ring inlaid teeth and bolted. When the crushing process sets of teeth wear reaches a certain level of individual replacement, fast, thus reducing downtime, reducing production costs. 
 Reasonable structure, long life 
 Reduce the number of broken roller teeth using a special spiral arrangement, both for materials that meet the size requirements of the discharge, and Roll at the same time force the roller gear conducive to crushing the bulk material. Roll with the liner and the dual role of the jaw body broken material, reduce tooth workload, and improve crushing efficiency and extend the machine usage time. 
 Roll Suimei equipment, high efficiency, long life, sealed, low noise, over material broken small granularity of the material is relatively uniform. 

 Working principle 
 On both sides of the crusher Roll crusher driven by a single or multiple motor pulley Roll do opposite rotation, in line with the material of the roll gap of two teeth down automatically by the combination of broken material larger than the Roll on Roll ( split, twist, fold, strike) so as to achieve the desired particle size requirements. www.yhzg.org