OPTIMAL HYDRAULIC INSULATION OF SHUT-OFF MEMBER OF MIXING UNIT IN DEVICES USED FOR CONTROL OF WATER FLOW RATE AND TEMPERATURE Russian patent published in 1999 - IPC

FIELD: domestic plumbing facilities; supply of water and control of its flow rate and temperature by means of mixing cocks and cocks with shower hoses fitted with valve-type or lever-tyre sprayers in bathrooms, shower stands, kitchen side. SUBSTANCE: lever-type cock has body with inlet passages for supply of cold and hot water, outlet passage, chamber and seat, discharge, cover, mixing unit with inlet and outlet passages; mixing unit is provided with shut-off member made in form of engageable movable and fixed disks; cock includes also noise absorber, control handle with two degrees of freedom, guide of mixing unit engageable with control handle by means of toothed control rod and three circular rubber gaskets. Cock is also provided with two bearing washers and setting shaped plate. One bearing washer is located under movable disk and is insulated by additional rubber gasket. Other bearing respective passages in body with respective passages in mixing unit. Setting shaped plate is located under fixed disk of shut-off member. Bearing washer is mounted in seat of body on adhesive; this washer is secured by means of screws and is locked by means of two pins together with shaped plate. Three circular rubber gaskets used for sealing the disk are received by holes of setting shaped plate and are secured by means of protective rings located in them. metal bearing washers have flat dull surfaces to ensure optimal hydraulic insulation when engageable with rubber gaskets. Movable and fixed disks of shut-off member are made from ceramic; they have flat dull surfaces to ensure optimal hydraulic insulation when engageable with rubber gaskets. Mixing unit is located in zone of connection of cover and body. Discharge is made as separate part fitted on body. EFFECT: enhanced reliability of cock; increased service life; improved service properties. 2 cl, 6 dwg