Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1994-11-21
1996-08-27
Warden, Jill
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
134 2212, 134 33, 134153, 134166C, 134169C, 134170, B08B 902
Patent
active
055497594
DESCRIPTION:
BRIEF SUMMARY
The subject invention concerns a method and an apparatus for cleaning elongate objects, such as tubes, preferably metal tubes.
Following manufacture and severing of tubes to the desired lengths, 2-6 meters, for instance, the tubes must be cleaned before use to remove dirt, such as oil and grease. Generally, the tubes are immerged into hot cleaning baths or apparatuses known as trichloroethylene apparatuses. These methods are inconvenient, time-consuming and do not produce the desired result, particularly as regards removal of chips, grindings and so called rolling dust. Trichloroethylene apparatuses cause other problems as well, especially to the environment, and are becoming obsolete.
In other cases goods of elongate shape are cleaned lengthwise, in tunnel cleaners. From the point of view of washing efficiency such cleaners are satisfactory but they require considerable floor space and their capacity is comparatively low. This cleaning method does not either lend itself to internal cleaning of the tubes.
Mechanical cutting of the elongate objects normally precedes the cleaning thereof. The rapid development of automatic cutting machines in later years has increased the demands for cleaning installations having higher capacities than those afforded by the methods outlined above.
The purpose of the invention is to suggest a method and an apparatus allowing efficient, rapid and space-saving cleaning of elongate objects as described above.
With respect to the method according to which the elongate objects are introduced into a cleaning apparatus, are cleaned by a cleaning liquid contained in said apparatus and are subsequently removed from the apparatus, this purpose is achieved by advancing the elongate objects transversely inside the cleaning apparatus while flushing them internally and externally with the cleaning liquid.
With respect to the cleaning apparatus having an inlet for introducing the dirty elongate objects thereinto, a container holding the liquid for cleaning the elongate objects, and an outlet for removal of the elongate objects after cleaning thereof, the same purpose is achieved by means of a conveyer advancing the elongate objects transversely from the inlet situated on one of the lengthwise side walls of the apparatus to the outlet at the opposite lengthwise side wall thereof, and a cleaning zone including a flushing unit which flushes the cleaning liquid at a high pressure and in a large flow about and through the elongate objects during at least a part of their advancement from the apparatus inlet to the outlet.
The invention will be described in closer detail in the following with reference to the accompanying drawing figures illustrating a presently preferred embodiment of the cleaning apparatus and wherein,
BRIEF DESCRIPTION OF THE FIGURES
FIG. 1 illustrates the apparatus schematically in a perspective view obliquely from above, certain parts having been cut away in order to illustrate components behind,
FIG. 2 is a longitudinal sectional view through the apparatus in FIG. 1,
FIG. 3 is a transverse sectional view through a part of the apparatus along line III--III of FIG. 2, end
FIG. 4 likewise is a transverse sectional view through the apparatus, in this case along line IV--IV of FIG. 2.
The cleaning apparatus illustrated in the drawings and designated generally by reference 1; is an elongate frame construction erected from frame profile members 2 and covering sheet-metal plates 3 not described herein in detail, and comprising a bottom 4, a top wall 5, front and rear side walls 6 and 7 and end walls 8.
The interior of the apparatus 1 contains a preferably heat-insulated container 9 holding a cleaning fluid 11 which reaches up to a level 10, said cleaning fluid containing water and a detergent, such as 2% of a neutral detergent comprising corrosion inhibiting agents.
A conveyor, designated as a whole by numeral reference 12, is placed inside the container 9 so as to be housed entirely above the cleaning fluid level 10 vertically. In accordance with the embodiment illustrated, the
REFERENCES:
patent: 3103939 (1963-09-01), Brockmann et al.
patent: 3106731 (1963-10-01), Garriott
patent: 3490468 (1967-04-01), Donato
patent: 4116716 (1978-09-01), Itoh et al.
patent: 4152173 (1979-05-01), Jackson et al.
patent: 4887624 (1989-12-01), Eggers
Chaudhry Saeed
Niagara Tube Washing Systems AB
Warden Jill
LandOfFree
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