Slurry pump for generating a continuous thick material flow and method for operating a sludge pump for generating a continuous thick material flow

摘要

Thick-matter pump for producing a continuous thick-matter flow, with at least two pump units (1, 2) alternating in pumping and suction operation, a suction line (4) with a boost pressure device (3) acting separately from the pumping units with a delivery cylinder having a piston (14) active effecting a thick matter compression, a delivery line (5) and a switching device (7) for switching between the pump units (1, 2), wherein in a first operating state by the switching means (7) at least a first pump unit (1) in pumping operation with the delivery line (5) and at least one second pump unit (2) is connected in suction operation to the suction line (4), characterized in that in a second operating state by the switching device (7) at least one first pump unit (1) in suction with the delivery line (5 ) and at least one second pump unit (2) is connected in pumping operation with the suction line (4) and the drawer pressure device (3) is ineffective, wherein the boost pressure device (3) is ineffective connected by connection to a reservoir (9), the boost pressure device (3) by opening a gate valve (8) with a reservoir (9) is connected, and the piston (14) of the delivery cylinder of the boost pressure device (3) whose output end (18) keeps closed.