The hydraulically driven diaphragm metering pump

摘要

Membrane hydraulically driven metering pump comprising a drive mechanism housing with a membrane separator drive and pump chambers and a perforated wall separating the chamber displacer from the driving chamber forming surface of the membrane at the end of the induction stroke of the annular chamber, the capacity of the storage actuating fluid defined filter therein and a safety valve, a spring loaded differential makeup valve with shut-off, the slide valve and the make-up cavities hydraulically bound thereto permanently with the chamber of the displacer, the annular chamber and the storage capacity of the actuating fluid in the channel that connects the storage capacitance of the actuating fluid cavity with make-up, a check valve, characterized in that the storage capacity of the actuating fluid is at atmospheric pressure.