BLASTER Russian patent published in 2012 - IPC F04F5/02 

FIELD: machine building.

SUBSTANCE: proposed blaster comprise case with intake and mixing chambers, active and passive media feed branch pipes and diffuser, active nozzle arranged in said case and having tapered section of intake chamber side, throttling needle to regulate active medium flow rate arranged inside active nozzle jacket with three centering ribs, and with opening made in central rib to receive toothed roll, to interact drive made up of worm or toothed pair arranged in said jacket to allow needle reciprocation in active nozzle. Note here that jacket central rib is configured to locate plane, on the left of active medium motion direction, is arranged at 6-7° to throttling needle axis while that on the right, is located at 26-28° throttling needle lengthwise axis in horizontal plane.

EFFECT: higher reliability.

2 cl, 4 dwg