Sludge extractor

Details Sludge extractor Sludge extractor

2007-09-25

2007-09-25

Cecil, Terry K. (Department: 1723)

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Discharge of treated material

C210S117000, C210S416100

Reexamination Certificate

active

10490781

ABSTRACT:
A sludge extractor with a receiving tank, on which a suction connection for a suction element, which draws in a sludge-containing liquid, and a discharge connection for discharge element, which discharges the sludge-containing liquid, are mounted, and with a motor for driving a suction device in such a way that a negative pressure is created in the receiving tank, which negative pressure keeps a vacuum valve on the discharge element closed, is characterized in that the negative pressure acting on the vacuum valve is lower than the pressure which acts on the vacuum valve as a result of the sludge-containing liquid when a predetermined fill level is reached by the sludge-containing liquid in the receiving tank.

REFERENCES:
patent: 3138873 (1964-06-01), Bishop
patent: 5618410 (1997-04-01), Wallace et al.
patent: 199 42 187 (2001-03-01), None
patent: 2 673 861 (1992-09-01), None

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