HIGH-PRESSURE DISTRIBUTING COCK Russian patent published in 2000 - IPC

FIELD: mechanical engineering. SUBSTANCE: high-pressure distributing cock is intended for distribution of passing liquid at high pressure in cocks used in different branches of national economy. Cock has body with outlet radial branch pipes and outlet drain branch pipe, cover and flange with inlet axial delivery branch pipe and with cylindrical rotary distributor with central inlet delivery hole and radial outlet hole positioned coaxially in body. Radial outlet hole is arranged coaxially with radial outlet delivery and drain holes of body. Distributor is provided with shaft fitted with control handle and passing through cover with sealing element. Sleeve with radial holes is fixed additionally between body and distributor. Radial holes are aligned with holes of outlet radial delivery branch pipes and outlet radial drain branch pipe. Distributor is provided with compensation cavities communicating with its central delivery hole. These cavities are made on cylindrical surface of distributor on side opposite to its radial outlet hole. Distributor has cylindrical projections on side of flange and cover. Cavity of central inlet delivery hole of distributor communicates with cavity formed by end face of distributor cylindrical projection on side of flange and by flange. It also communicates with circular zone through delivery channels. Circular zone is formed by cylindrical projection end face on side of cover and by cover itself. Circular zones between internal surface of body and cylindrical projection on flange side and between distributor shaft and external surface of cylindrical projection on side of cover communicate with cavity of outlet radial drain branch pipe by means of channels. Distributor cross-sectional area is equal to sum of cross-sectional area of cylindrical projection on flange side and cross-sectional area of cylindrical projection on side of cover. Radial outlet hole of cylindrical rotary distributor is made in the form of elliptical-section diffuser with this section area equal to summary area of sections of distributor compensation cavities. EFFECT: extended service life. 7 cl, 8 dwg