Gang control type finished product crushing and screening machine

The utility model discloses a gang control type finished product crushing and screening machine which comprises a feeding mechanism and a screening mechanism. The feeding mechanism comprises a feeding hopper and a feeding hopper fixing rack. A feeding opening is formed in the bottom end of the feeding hopper, the feeding opening is provided with a feeding switch, and the screening mechanism is arranged below the feeding hopper. The feeding switch is a first electromagnetic valve, a pressure sensor is arranged below a primary filter sieve, and the first electromagnetic valve and the pressure sensor are both connected with a PLC. When it is detected that the weight of a material borne on the primary filter sieve reaches a threshold value, the switching value of the first electromagnetic valve can be adjusted through the PLC. According to the gang control type finished product crushing and screening machine, gang control over the electromagnetic valve and the primary filter sieve is achieved, the feeding adjustability of the feeding hopper is achieved, the efficiency is high, three levels of particles can be separated according to sizes through the simple structure, the screening effect is good, the maintenance cost of equipment is low, operation is convenient, the using requirement of customers is met, and application and popularization in the industry can be facilitated.