PARTICLE BLOWER Russian patent published in 2021 - IPC B24B57/04 B24B19/00 B24C7/00 B24C9/00 

FIELD: drive mechanisms.

SUBSTANCE: invention relates to a drive for moving a controlled element between the first and second controlled positions, it can be used in a particle blower. The drive case forms the first inner chamber, which contains the first sidewall. The first piston of the drive contains the first side and the second side. The first piston is located in the first inner chamber and is movable between the first position and the second position. The first piston engages hermetically with the first sidewall to form the first chamber on the first side of the first piston and the second chamber on the second side of the first piston. The second inner chamber of the drive contains the second sidewall. The second piston of the drive contains the first side and the second side, is located in the second inner chamber and is movable between the third position and the fourth position. The second piston engages hermetically with the second sidewall to form the third chamber on the first side of the second piston and the fourth chamber on the second side of the second piston. The second piston is made with the possibility of not engaging with the first piston when the second piston is located in the third position. The second piston is made with the possibility of moving the first piston to the second position when moving the second piston from the third position to the fourth position. The drive contains one elastic element located in the fourth chamber and made with the possibility of elastic movement of the second piston to the fourth position.

EFFECT: implementation of the drive allows controlling the abrasive feed rate and the size of the cryogenic abrasive, in particular the fluid.

8 cl, 25 dwg, 43 ex