1. In the lower part of the hopper containing a piece of the gate or barrier, by adjusting the opening of the gate or barrier can control the amount of feed. By controlling the amount of feed, can improve operational efficiency and smash quality and avoid overload. 2. General Lumber mill has two different aperture, three screens (wood mill with an aperture of 1.2mm and 3.5mm screen), replace the use of different pore size screen, available in different crushed granularity. When installing the screen, depending on the rotation direction of the rotor, the correct choice of lap joints screen mode, so that the inner side of the interface in the same direction of rotation, in order to avoid blocking material; if mesh sieve tapered orifice at the end due There are usually a few glitches, in order to facilitate the material should be loaded macroporous end outward. 3. Equipped with air pump timber crushed when granularity of adjustment, but also with the size of the damper control.