Hydraulically driven hazardous material pump comprises pump, motor for pump drive, transport frame for pump, suction conduit for sucking material to pump and pressure conduit for delivery of material from pump.

摘要

The transport frame (23) with the pump (20) is movable relatively to the motor (10) and is not firmly connected to it. The pump is connected to the motor by a hydraulic feed conduit (31) from the motor to the pump and a hydraulic return conduit (32) from the pump to the motor. On or close to the pump is a cut-off device (33) in the hydraulic feed conduit or the hydraulic return conduit. Adjacent to the rotor is a by-pass conduit (34) from the hydraulic feed conduit to the hydraulic return conduit.