The crusher is a machine that pulverizes large-size solid raw materials to the required size. According to the size of the crushed material or the crushed material, the crusher can be divided into coarse crusher, crusher, and ultrafine crusher. There are four types of external forces applied to the solid during the crushing process: shearing, impact, rolling and grinding. Shearing is mainly used in coarse crushing (crushing) and crushing operations, suitable for the crushing or crushing of tough or fibrous materials and bulk materials; impact is mainly used in crushing operations, suitable for the crushing of brittle materials; rolling Mainly used in high-fine grinding (ultra-fine grinding) operations, suitable for ultra-fine grinding operations for most materials; grinding is mainly used for ultra-fine grinding or super-large grinding equipment, suitable for further grinding operations after grinding operations. The feedstock corn is discharged from the bottom of the silo through an electric valve, conveyed to the crushing workshop by conveyor, and conveyed to the bucket scale by bucket elevator, then to remove impurities in the corn by sieve and stone removal machine. After cleaning, the corn goes into the buffer bin, and then through the iron removal variable frequency feeder to feed into the crusher uniformly. The corn is hit by hammer at a high speed, and qualified powder material enters into the negative pressure bin. The dust in the system is inhaled to the bag filter through a fan. The recovered dust returns to the negative pressure bin, and the clean air is discharged to the outdoor. In addition, the negative pressure bin is equipped with a material level detection alarm, the fan is equipped with a silencer. The whole system operates under the micro negative pressure, with low power consumption and no dust spillover in the working environment. The crushed powder is conveyed to the mixing system by the screw conveyor at the bottom of the negative pressure bin. The mixing system is controlled by computer and the ratio of powder material and water is controlled automatically.