Sewage disposal system

Details Sewage disposal system Sewage disposal system

1976-05-12

1976-12-21

Adee, John

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Diverse sensing means

210109, 210152, 210533, 137396, C02C 100

Patent

active

039987361

ABSTRACT:
A sewage disposal system in which sewage is permitted to accumulate to a desired level in a sump or receptacle, following which it is evacuated from the receptacle through a discharge conduit, by means of a partial vacuum transmitted through the conduit from a central collection point. Disposed in the discharge conduit is a normally closed flow valve, the control of which is by means of a control valve. Negative pressure transmitted through the discharge conduit is utilized both for opening the flow valve and for maintaining it and the control valve opened until the sump is evacuated, at which time atmospheric pressure entering the discharge conduit from the sump acts upon the control valve to close the latter, which in turn shuts off the flow valve. Triggering of the flow valve to commence the evacuation operation may be performed either manually or automatically by means responsive to the rising liquid level within the sump.

REFERENCES:
patent: 2736337 (1956-02-01), Parks et al.
patent: 3536196 (1970-10-01), Zeff et al.
patent: 3537472 (1970-11-01), Yulio
patent: 3844946 (1974-10-01), Farrell, Jr.
patent: 3875051 (1975-04-01), Kovarik

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