SZ series hydraulic crusher is based on the principle of hydraulic vortex, using a new designed rotor, and optimized the structure of the traditional hydraulic crusher. The geometric size of the rotor reduces the power consumption of the equipment, the optimized structure of the groove and flow resistance plate can fully mix the slurry, low input power can produce strong eddy flow, causing strong friction (non-mechanical force) between the fiber and fiber, thus ensuring the constant distribution efficiency, adjustable clearance between sieve plate and rotor, efficient distribution, low debris content, high fragmentation concentration, maximum concentration of 10% and small tank volume.