Water screen for blast media dust containment
AssigneeChurch & Dwight Co., Inc.
InventorJames D. Shank, Jr.
Life of this patent
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Abstract
A dust containment system for removing dust from the environment of a workpiece which is being blast cleaned comprises a water screen including a downwardly flowing curtain of water placed in the path of deflected blast media from the workpiece, a rearward wall spaced from the water screen and also in the path of the deflected stream of blast media and means to remove the blast media from the space between the water screen and the rearward wall.
Claims25
A dust containment system for use in a blast cleaning process comprises:
- a water screen including a means to form a water curtain positioned in the path of a deflected particulate-containing blast media stream, a rearward wall spaced from said water screen and in the path of the deflected blast media which passes through said water screen, and means for removing particulates from said space between said water screen and said rearward wall.
A process for removing coatings or other contaminants from a solid surface comprises contacting said surface with a highly pressurized stream comprising a fluid carrier and a particulate abrasive, removing the dust caused by said abrasive contacting said solid surface by passing the stream of pressurized fluid and particulate abrasive deflected from said surface into contact with a dust containment system comprising a water screen including a downwardly flowing water curtain in the path of said deflected stream, a rearward wall spaced from said water screen and in the path of said deflected stream which initially passes through said water curtain, and removing said particulates from the space between said water screen and said rearward wall.
Dependencies are inferred from the claim text.