VACUUM REGULATOR Russian patent published in 1995 - IPC

FIELD: agriculture. SUBSTANCE: vacuum regulator has housing 1 accommodating two different-pressure chambers 2 and 3 which have common wall made in form of flexible diaphragm-bellows 4 with vertical shutter 6 secured in center of diaphragm. Shutter is coated with low friction coefficient material. Made in base of shutter is triangular cutout with point moving along guide directed towards diaphragm. Shutter is installed for overlapping outlet branch pipe 13 arranged in chamber 2 inside air branch pipe 14 installed in horizontal plane with clearance relative to shutter; inlet hole of branch pipe 13 and outlet hole of branch pipe 14 are of shape identical to shape of shutter cutout, bases of holes being matched and arranged in parallel to base of cutout. Base of branch pipe 14 is elongated, extending to edge of base of branch pipe 13 connected by means of bypass channel 12 and gate 11 with rated vacuum chamber 3. Fitted inside chamber 3 opposite to support plate 5 rigidly secured to center of diaphragm and shutter is stop 7 secured in cover of vacuum regulator. Chamber 3 has checking device 9 and atmospheric air inlet device 10. EFFECT: enlarged operating capabilities. 5 dwg