VACUUM VALVE WITH DESTRUCTIBLE MEMBRANE Russian patent published in 2020 - IPC F16K17/16 F16K17/40 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, namely: to vacuum blasting and ventilation equipment of metal blasting chambers. Vacuum valve containing flange with membrane attached to it by means of annular clamp, body with stepped grooves having thrusts. Nut unites and fixes a flange and the casing. Movable branch pipe with knife aligned therewith with annular cutting edge is moved and fixed inside housing with stepped slots by means of bushings with through holes. Circular cutting edge has a groove in its lower part.

EFFECT: valve design allows to use membranes of different thickness, to replace them quickly during operation, does not require their preliminary molding, ensures guaranteed membrane cutting and prevents ingress of cut part of membrane into ventilation system.

3 cl, 2 dwg