FLUID COUPLING FOR VACUUM DISCHARGE SYSTEMS Russian patent published in 1998 - IPC

FIELD: chemical industry; storage and discharge of harmful chemical substances. SUBSTANCE: fluid coupling has discharge unit secured on cylindrical container for liquid, and head for mating with discharge unit provided with pneumatic valve to regulate air getting into container and hydraulic valve to regulate liquid getting out of container. Head of fluid coupling is hermetically sealed with hydraulic valve and opens the valve. Discharge unit and head of coupling are provided with special connecting members which come into engagement at relative mated motion of discharge unit and coupling head. The latter is provided with part for engagement with hydraulic valve of discharge unit at its opening. Discharge unit and connecting members are installed for relative displacement between coupling head and discharge unit to provided mated engagement and opening of hydraulic valve to prevent opening of hydraulic valve in discharge unit without mated engagement between coupling head and discharge unit. EFFECT: improved storage of aggressive matter. 8 cl, 4 dwg