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Nozzle-for-abrasive-cleaning-or-cutting

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Nozzle for abrasive cleaning or cutting

Details

Inventors: Dale, Brian D.;
Assignee:
Primary Examiner: Kisliuk; Bruce M.
Assistant Examiner: Reichenbach; Bryan
Attorney, Agent or Firm: Sowell; John B.

A mixing nozzle for producing a high velocity jet of airborne abrasive slurry comprising a cylindrical air passage of a length at least 2.5 times its diameter, a concentric circular chamber surrounding the cylindrical air passage and having a tangential entry for the abrasive slurry, and a nozzle portion having a region tapering from the diameter of the concentric circular chamber to a cylindrical region. The diameter of the cylindrical region should have a diameter lying between 1.2 and 3.0 times that of the air passage and a length at least six times its diameter. The air passage and the concentric chamber with its tangential entry is preferably formed as a replacement insert made from a wear resistant material.

DETAILED DESCRIPTION It is an object of the present invention to provide a novel mixing nozzle for reducing the amount of airborne dust employed in cleaning or cutting nozzles.
It is another principal of the present object of the present invention to provide a novel mixing nozzle which is capable of providing a uniformly-mixed well-directed jet abrasive slurry for cleaning or cutting purposes.
It is another principal object of the present object of the present invention to provide a nozzle insert which easily removed and replaced as the principal wearing element in a novel cleaning or cutting nozzle.
In accordance with these and other objects of the present invention, there is provided a nozzle system having a cylindrical shape mixing section, a cylindrical shaped insert which fits within the mixing section, an outlet nozzle portion which holds the insert in the cylindrical shaped mixing section and an air hose adapter which couples to the inlet of the mixing section for introducing a high velocity jet of air into the insert so as to mix and blend with a slurry of abrasive material introduced into an annular cavity of the cylindrical insert and to propel the mixture from the outlet nozzle.

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