The dog food screening machine is a special equipment produced by Dayong Vibration Equipment Company for the sorting of dog food. The working principle is that the vibrating screen uses a vertical motor as the excitation source. The upper and lower ends of the motor are equipped with eccentric blocks, which convert the rotary motion of the motor into horizontal, vertical and inclined three-dimensional motion, and then transmit the motion to the material on the screen surface. Adjusting the phase angle of the upper and lower ends can change the movement track of the material on the screen surface. achieve the effect of sieving.