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2.2 Hydraulic End
2.2.1 Structure
The hydraulic end of the hydraulic diaphragm metering pump comprises medium chamber, diaphragm,
hydraulic system and hydraulic oil tank, among which the medium chamber is composed of cylinder head, inlet
and outlet valves, and inlet and outlet pipes and flanges, and the hydraulic system is composed of cylinder block,
hydraulic cylinder, plunger, seal and “three-valve” system(limit-refilling valve, deflation valve and safety
valve).
The structures of hydraulic ends for the single diaphragm metering pump shows in Figure 3
Figure 3 Hydraulic end structure for single diaphragm metering pump
The structures of hydraulic ends for the double diaphragm metering pump shows in Figure 4
