Cleaning and liquid contact with solids – Processes – Paints – varnishes – lacquers – or enamels – removal
Patent
1995-10-20
1998-03-10
El-Arini, Zeinab
Cleaning and liquid contact with solids
Processes
Paints, varnishes, lacquers, or enamels, removal
134 40, 134 42, 134 34, B08B 302
Patent
active
057256802
ABSTRACT:
A first method for cleaning and stripping a surface employs, a high pressure fluid blaster including a rotating nozzle which has a plurality of separate fluid jet orifices. The fluid jet orifices are geometrically configured such that rotation of the nozzle in a single direction, i.e. clockwise, results in the desired metal cleaning or stripping. The plurality of jets are divided into two or more sets, each set having at least one jet therein, with the jets in each set oriented at a different angle from the jets in the other sets. This configuration will produce tubular streams of fluid as the nozzle rotates such that the streams first converge, then intersect, and finally diverge. As the jet streams are applied to a surface after the streams have diverged, they score the surface with concentric circular grooves due to the force of the high pressure fluid. Importantly, the force of the high pressure fluid does not just score the surface with these concentric circles, but the areas between these concentric circles are also blasted clean due to tangential fluid forces.
A second method of the present invention is substantially identical to the first method except that the different jet sets are all aligned at substantially the same angle from the central axis of the nozzle such that the fluid streams emanating from the jet sets only diverge, and never converge or intersect.
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NLB Corp.; 1989; Spin-Nozzle brochure (Model No. SRH 20-77) no month available.
El-Arini Zeinab
O'Connor Christensen
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