| 摘要 |
FIELD: machine building. ^ SUBSTANCE: proposed automatic switch consists of three-way body, two flanges, shut-off assembly, shut-off assembly drive axle, O-rings and three inlet and outlet branch pipes. Shut-off assembly consists of shutter, rocker and two membrane assembly. Said shutter is made up of cylinder with O-rings at its end faces fitted on switching shaft fitted in seats of said membrane assembly. Rocker axle is press-fitted perpendicular to switching shaft in horizontal plane at gave valve center. Rocker axle consisting of top and bottom wedge levers jointed together by axle. Bottom wedge levers is made up of single support with tapered base, through opening for shutter passage and rocker axle opening. Top wedge lever consists of wedge-like top support and guide with spring arranged there between. Said rocker top and bottom wedge levers have their tapered supports and bases thrusting against switch body cutouts. Every membrane unit consists of membrane case with holes and switching shaft seat, and membrane proper. The latter is tightly pressed against membrane case by thread joint. ^ EFFECT: higher safety. ^ 3 dwg |
