Metering pump

Details Metering pump Metering pump

1987-08-25

1988-10-11

Croyle, Carlton R.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417374, 417413, 92 98R, F04B 4304

Patent

active

047767715

ABSTRACT:
A self-aspirating and self-bleeding metering pump comprises a metering chamber having an inlet connected with a predelivery chamber and an outlet connected with a metering point. The predelivery chamber is connected with a metering agent tank through a suction conduit comprising a suction valve and a return conduit comprising a head valve. Furthermore, a diaphragm for predelivering into the predelivery chamber is provided. A metering section of the diaphragm cooperates with the metering chamber for performing the metering stroke and comprises a separate drive serving this purpose. In this manner dynamically stressed sealing members are avoided, whereby the self-aspirating and self-bleeding metering pump is resistent also to the metering of aggressive media.

REFERENCES:
patent: 1860283 (1932-05-01), Gulick
patent: 1926074 (1933-09-01), Warnke
patent: 2289215 (1942-06-01), Lotz
patent: 4086036 (1978-04-01), Hagen et al.
patent: 4523902 (1985-06-01), Wally

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