Patent ID: 6905085

Claim:
A particle processing apparatus comprising a particle processing chamber disposed inside a clean box and a drive mechanism including a drive rotary body disposed outside the clean box via an outer wall composing the clean box, said drive rotary body connected to a rotor provided inside the processing chamber, characterized in that the clean box is attached to a base on which the drive mechanism is installed, a sealing means fitted to the outer wall at a fitting portion of the rotary body so that sealing performance inside and outside the box is maintained from the outside of the outer wall, and the processing chamber provided in close contact with the outer wall via a casing disposed inside the clean box so as to be integrated with the clean box and the sealing means, and structured so as to be disassembled inside the box, the apparatus further comprising, a sealing gas circulating path for supply and exhaust of a sealing gas is formed between opposing surfaces of the sealing means and the processing chamber, the circulating path is formed as a shaft sealing means for restraining particles to be processed by the rotor from entering the drive mechanism side, and the sealing means is commonly used as a component of the shaft sealing means.