Cleaning and liquid contact with solids – Apparatus – Sequential work treating receptacles or stations with means...
Patent
1993-12-23
1995-05-23
Stinson, Frankie L.
Cleaning and liquid contact with solids
Apparatus
Sequential work treating receptacles or stations with means...
134111, 134132, 68242, B08B 302
Patent
active
054172314
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for degreasing objects.
From DE-A1 23 04 524 a drum washing apparatus intended for washing, rinsing and drying of metal objects is known. This apparatus consists of a long, inclined drum, which possibly is divided in several cascade-coupled drum sections, and which are provided with a single twisted spiral for moving objects. The objects are lead in in one end of the drum, conveyed through a washing zone, to which washing agent is supplied via a nozzle tube inside the washing zone, followed by a draining zone. Herefrom dirty washing agent is lead to a collecting container, where the washing agent possibly is cleaned and lead back to the supply container for reuse. The objects continue through a rinsing zone with a belonging draining zone, and the rinsing process may be completed by leading out the objects through a drying zone at the opposite end of the drum washing apparatus.
SUMMARY OF THE INVENTION
The invention has for its purpose to provide an apparatus of the type described in the introductory part, and which by simple provisions may appear as an extremely compact apparatus, which as an independent unit in particular is suitable for use at decentralized degreasing of objects.
The apparatus according to the invention is distinctive in that the drum consists of three concentric tubes in the form of said outer tube of perforated plates or netting, an inner tube and an inmost, central heating tube, through which hot air is lead to the inner tube via radial nozzle openings, that the drum between the outer and inner tube comprises a spiral member adapted to move the objects forward in the drum passing the washing and rinsing zones, and that the drum between the inner tube and the inmost heating tube comprises an inverted twisted, inner spiral, adapted to move the objects back through the drum, as the objects after the rinsing zone are lead from the outer perforated tube upwards and inwards into the inner tube.
By the placement of washing and rinsing zones immediate after each other, and because the drying zone is placed along the middle of the drum, that is along the inner, opposite twisted spiral, a simple and compact apparatus is primarily obtained, which furthermore has following advantages: operations, for instance directly at groups of lathe apparatuses, radial air nozzles in central heating tube, that is that washing and rinsing agents passing the objects hit the outer side of the inner tube and are heated, placed for object dimensions down to very small objects, perforated tube, so that the objects are effectively sluiced, drying process is obtained, environmental taxes--only 2.times.8 liters of washing and rinsing agents are used,
Appropriately the apparatus according to the invention is such provided that impellers for spraying washing and rinsing agents, respectively, are placed under the drum and at a side of separate supply container for washing and rinsing agents, that a sheet formed filter is arranged between the supply container and the drum, which filter the washing and rinsing agents have to pass, when lead back to the containers.
Preferably the apparatus is such provided that the sheet formed filter stretches from one supply roll at a rearside end of the apparatus to a spooling roll or mechanism at the opposite end of the apparatus, that is so that the filter sheet, which has been used between supply container and rinsing zone, subsequently may be reused between the supply containers and the washing zone.
In order to achieve best possible utilization of the hot drying air for heating of the washing and the rinsing agents, the apparatus preferably is such provided that the central heating tube is stationary, that is not rotating together with the drum, and that the radial nozzle openings for the hot drying air are placed in the lower side of the heating tube and preferably opposite the fan-shaped jets of washing or rinsing agents from the respective impellers.
And preferably the central heating tube is connected
REFERENCES:
patent: 710422 (1902-10-01), Butler et al.
patent: 794824 (1905-09-01), Baenen
patent: 1251073 (1917-12-01), Maloney
patent: 2089102 (1937-08-01), Savage
patent: 2612178 (1952-09-01), Skinner
patent: 2909872 (1959-10-01), Kearney et al.
patent: 3117031 (1964-01-01), Griffiths
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