Inside the machine, the grinding rotor consisting of 56 blades is rotated at high speed on the bearing seat of the left and right end cover, which causes the solid material particles to be squeezed, torn and collided between the tooth lining plate of the inner cavity and the blade. Shearing and other mechanisms, so as to achieve the purpose of comminution. At the same time, the high speed rotation of the large and small impellers at the two ends of the rotor, through the eddy current effect of the cavity form between the inlet and the outlet, makes the comminuted particles smoothly inlet (large gap) to small clearance (small clearance), and realize comminution and thinning. In order to limit the excessive temperature in the cavity, improve the comminution efficiency, prevent the particle sticking cavity, the stick knife, the tooth block, the agglomeration, in the cavity surface 4 By forcing the water cooling with the water jacket of the wide cavity, the temperature in the cavity can be controlled to a lower limit.