MUD PUMP WITH DELIVERY CYLINDERS, TWO-CYLINDER CONCRETE PUMP IN PARTICULAR Russian patent published in 1999 - IPC

FIELD: forming continuous flow of concrete. SUBSTANCE: system of connections makes it possible to facilitate operation of drive of respective delivery cylinder in proportion with amount of thick mass taken by compensating cylinder and to retard change-over of control damper in such way that one of dampers belongs to each delivery cylinder on both sides of inlet hole of control damper whose size corresponds to ares between holes of delivery cylinders; when control damper is in midposition, hole of delivery cylinders is shielded by plates of damper and inlet hole in control damper is shielded over area between delivery cylinders for partial stroke of piston of delivery cylinder compacting the concrete being sucked. Inlet hole of control damper is closed by surface between holes of delivery cylinders. EFFECT: continuous facilitated operation of respective delivery cylinder of pump. 15 cl, 6 dwg