Plunger pump

Details Plunger pump Plunger pump

1991-03-20

1992-07-14

Bertsch, Richard A.

Pumps

With signal, indicator, or inspection means

92 865, F04B 2100, F01B 3100

Patent

active

051297906

ABSTRACT:
A plunger pump for supplying solution in accordance with an extrusion action of a plunger within a pump chamber. The plunger pump includes a cleaning chamber sealed by a seal member around and relative to the plunger, with a cleaning liquid inlet-side flow conduit and a cleaning liquid outlet-side flow conduit for communicating with the cleaning chamber, respectively. A mechanism isolates one of the inlet- and outlet-side flow conduits from the atmosphere and releases the other to an atmosphere under a condition where the cleaning liquid inlet- or outlet-side flow conduits are filled with the cleaning liquid. If the seal member in sliding contact with the plunger is degraded or aged, it is possible to observe a leakage of the liquid from the pump chamber along a sealing face between the seal member and the plunger.

REFERENCES:
patent: 2330781 (1943-09-01), Langmyhr et al.
patent: 3914752 (1975-10-01), Howard et al.
patent: 3943717 (1976-03-01), Schexnayder

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