Hose diaphragm pump for supplying fluid, has transducer drive for operating pressure transducer that is connected with annular space under formation of closed pressure space, where drive is designed as hydraulic piston drive

摘要

The pump has a pressure transducer drive for operating a pressure transducer (58) that is connected with an annular space (14, 15) under formation of a closed pressure space (67) filled with a fluid. Motor valve drive devices (20, 21, 22) are designed for control opening and closing of a suction valve (16) and a pressure control valve (18). The suction valve is closed and the pressure control valve is opened during the compression of a hose diaphragm (10, 11), where the pressure transducer drive is designed as a hydraulic piston drive.