This machine is suitable for coarse crushing of various chemical, pharmaceutical, rubber, food and other tough and hard materials, such as various medicinal materials, rubber, plastics, chemical materials, etc. It is also suitable for the processing of fiber materials in In the crushing process of chemical, pharmaceutical, rubber, food and other industries, due to the influence of different original shapes of materials, many materials cannot complete the whole process of crushing at one time, and often need to go through coarse crushing, fine crushing, ultra-fine crushing and other processes. According to this situation, we have comprehensively analyzed various raw materials and characteristics and the existing crushing equipment, and carefully developed the KLD type coarse crusher. The machine has the advantages of simple structure, small and reasonable, convenient operation, low power consumption, good crushing effect and uniform particle size. This Rulverizer is a vertical coarse pulverizer, and adopts multi-knife pulverization, which has the advantages of balanced operation, low vibration, cross shearing knife, good design effect, low energy consumption, low noise and high output.