Vacuum valve controller for vacuum sewer system

Details Vacuum valve controller for vacuum sewer system Vacuum valve controller for vacuum sewer system

1995-04-06

1996-12-31

Michalsky, Gerald A.

Fluid handling

Diverse fluid containing pressure systems

Main line flow displaces additive from shunt reservoir

1372361, 137396, 137403, 137907, E03C 112

Patent

active

055884580

ABSTRACT:
A vacuum valve controller for a vacuum sewer system including a suction pipe (12) which is communicated with a vacuum system (15) by opening a vacuum valve (14), and which is cut off from the vacuum system by closing the vacuum valve (14) is disclosed. Soil water in a soil water basin (10) is sucked through the suction pipe (12) and sent to a predetermined place by opening the vacuum valve (14). The vacuum valve controller is provided with a control device (20) which closes the vacuum valve (14) by detecting that the suction pipe has begun to suck air from a change of the pressure difference between two points (16 and 17) in the suction pipe (12) which are different in height from each other, which provide a vacuum valve controller for a vacuum sewer system, which is simple in structure, easy to maintain and capable of stable operation.

REFERENCES:
patent: 3774637 (1973-11-01), Weber et al.
patent: 3777778 (1973-12-01), Janu
patent: 4373837 (1983-02-01), Lin et al.
patent: 4373838 (1983-02-01), Foreman et al.
patent: 4603709 (1986-08-01), Huisma
patent: 4691731 (1987-09-01), Grooms et al.
patent: 5069243 (1991-12-01), Foreman
patent: 5114280 (1992-05-01), Ushitora et al.

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