Vacuum valve control device and vacuum valve

Details Vacuum valve control device and vacuum valve Vacuum valve control device and vacuum valve

1994-06-07

1997-04-01

Walton, George L.

Fluid handling

Diverse fluid containing pressure systems

Main line flow displaces additive from shunt reservoir

4323, 1372361, 137393, 137396, 137403, 141 65, 141198, 406 14, 406192, E03F 100, B65G 5300, F16K 31126

Patent

active

056157010

ABSTRACT:
A vacuum control valve controls the removal of sewage or other liquid removed from a tank by a vacuum discharge pipe. The control valve uses the amount of liquid in the tank, the atmospheric pressure, and the vacuum pressure of the vacuum discharge pipe to open or close a pipe communicating section which attaches the vacuum discharge pipe to a suction pipe disposed within the tank. When the pipe communicating section is opened, the liquid is removed from the tank via the suction pipe and the vacuum discharge pipe. When the tank is emptied, a damping diaphragm allows for decompression of pressure around its peripheral portion to prevent excessive suction. An opening time adjusting valve automatically self-adjusts to control the time period for a single suction activity based on the vacuum pressure inside the vacuum discharge pipe.

REFERENCES:
patent: 3763862 (1973-10-01), Spieth
patent: 4251048 (1981-02-01), Aurell
patent: 5069243 (1991-12-01), Foreman
patent: 5078174 (1992-01-01), Grooms et al.

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