Abstract: A part of an outer wall composing a clean box 2 becomes a component of a particle processing apparatus, a processing chamber 31 and the clean box 2 are integrated, the entire apparatus can be made compact, and in accordance with such compactness, even when a shaft sealing means 6 and an oil sealing means 323 are disposed in proximity to each other, reliable shaft sealing performance is secured, whereby a shaft sealing structure enabling processing of fine particles by high speed rotation is provided. Furthermore, integration of setting means for components accompanied with assembly and disassembly of the processing chamber is achieved, the entire assembling structure is simplified and the assembly work is made easier, whereby a particle processing apparatus the assembly and disassembly of which accompanied with cleaning work can be easily carried out in a short time without loss of productive efficiency.

Abstract: A part of an outer wall composing a clean box 2 becomes a component of a particle processing apparatus, a processing chamber 31 and the clean box 2 are integrated, the entire apparatus can be made compact, and in accordance with such compactness, even when a shaft sealing means 6 and an oil sealing means 323 are disposed in proximity to each other, reliable shaft sealing performance is secured, whereby a shaft sealing structure enabling processing of fine particles by high speed rotation is provided.

Abstract: A crushing and particle sizing apparatus for granular material in which the particle size can be controlled without the use of a screen or similar apparatus. A gap region is formed as a particle size adjusting region which allows particles suited to the gap setting to pass. Particles not suited to the gap setting are brought into rotational contact with a rotating body and crushed to the suited gap setting.