塑料粉碎机筛网采用双轴或单轴低速转动，利用刀盘对物料进行切、割、撕、拉。直连蜗轮蜗杆减速电机，直接安装在破碎机主动轴上，通过齿轮变速传至动轴，使主动轴的动刀与壳体上的静止刀盘形成相对运动。主动轴上的螺旋齿刀盘交错排列，使物料进入后，同时受到挤、撕、剪的作用，从而使物料得到破碎。

Claw knife type plastic crusher screen adopts double axis or single axis at low speed, using cutter head to cut, cut, tear and pull material. Directly connected worm gear and worm reducer motor is directly installed on the driving shaft of the crusher and transmitted to the moving shaft through the gear speed change, so that the moving cutter of the driving shaft and the static cutter head on the shell form a relative movement. The spiral tooth cutter disc on the drive shaft is staggered, so that the material enters, and is squeezed, torn and shears at the same time, so that the material is broken.

由于所需断碎的铁滤网物料大多脆硬，因此破碎机内片，小齿轮，筛网、刀片同等机件，必须是用耐磨损的坚硬材料合金钢制成。在主轴上装有飞轮，以使主轴在破碎塑料时具有较大的扭矩。利用高速旋转的叶轮将长的塑料搅撕折断，高速旋转的主轴上串联着多片圆钢板，圆板联着主轴旋转。圆板四周都装有4~6个用锰钢铸成的小形齿轮。小齿轮在自己的小轴上自由地转动。长而乱成团的塑料从顶口进入机内，被高速转动的钢板上齿轮绞动，撕打成小碎块，由底部的筛孔流出筛孔大小可根据塑料要求的断碎颗粒大小而选定。

Because most of the broken iron filter material is brittle and hard, the crusher inner piece, pinion, screen mesh, blade and other parts must be made of wear-resistant hard material alloy steel. The flywheel is installed on the spindle to make the spindle have greater torque when breaking plastic. The long plastic is torn and broken by a high-speed rotating impeller. A number of circular steel plates are connected in series on the high-speed rotating spindle, and the circular plate is connected with the spindle to rotate. Four to six small cogs made of manganese steel are installed on all sides of the circular plate. The pinion turns freely on its own little shaft. Long and disordered plastic from the top mouth into the machine, is twisted by the high-speed rotating steel plate gear, torn into small pieces, from the bottom of the sieve hole out of the sieve size can be selected according to the plastic requirements of the size of broken particles.