System for cleaning drainage pipes in movable equipment

Details System for cleaning drainage pipes in movable equipment System for cleaning drainage pipes in movable equipment

2005-01-04

2005-01-04

Barr, Michael (Department: 1746)

Cleaning and liquid contact with solids

Apparatus

For work having hollows or passages

C134S16600C, C134S104400, C134S109000, C134S16900A

Reexamination Certificate

active

06837254

ABSTRACT:
A system is provided which is capable of cleaning a drainage pipe in a short time for removal of scale without detaching the drainage pipe from movable equipment. The system comprises: a reservoir tank containing a cleaning liquid; a feed pipe connecting the reservoir tank and a downstream side of the drainage pipe of the movable equipment and including feed pump means for feeding the cleaning liquid to the downstream side of the drainage pipe from the reservoir tank; a suction pipe connecting an upstream side of the drainage pipe and the reservoir tank; and vacuum pump means for sucking gas from the reservoir tank; wherein the suction pipe is provided with gas separation means for separating gas from gas, liquid and solid sucked from the drainage pipe; wherein a gas suction pipe for feeding the separated gas back into the reservoir tank is connected parallel to the suction pipe between the gas separation means and the reservoir tank.

REFERENCES:
patent: 5873944 (1999-02-01), Lien et al.
patent: 6001189 (1999-12-01), Rolfson
patent: 6484736 (2002-11-01), Kanda et al.
patent: 6533871 (2003-03-01), Zahuranec et al.
patent: 6-58435 (1994-08-01), None
patent: 2717627 (1997-11-01), None
patent: 11-285675 (1999-10-01), None

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