Rotary media valve
OwnerJames Shankinventor
Life of this patent
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Abstract
A blast cleaning apparatus containing a rotary media valve with a rotor, which contains depressions on the surface thereof, delivers blast media from a supply vessel into a pressurized gas stream upstream of a nozzle for blast cleaning. As the rotor revolves, the depressions align with the supply vessel where the particulate blast media cascades into the depressions. The media is transported from the supply vessel to the pressurized gas stream as the rotor spins.
Claims27
An apparatus for blast cleaning, comprising:
- a vessel means for containing a quantity of particulate abrasive blasting medium;
- a source of pressurized gas;
- a gas conveying line being in fluid communication with said source of pressurized gas;
- a rotary media valve for feeding said blasting medium from said vessel to a location of said gas conveying line to form a mixture of blasting medium and pressurized gas;
- a blast nozzle at the end of said conveying line and downstream of said location.
A method for blast cleaning, comprising:
- providing a quantity of blasting medium within a vessel;
- feeding said blasting medium from said vessel, through a rotary media valve into pressurized gas to form a blast steam;
- discharging said blast stream through a nozzle placed downstream of where said blasting medium is fed into said source of pressurized gas.
The method for blast cleaning of claim 20 wherein the blasting medium comprises sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate, sodium sesquicarbonate, sodium chloride, sodium sulfate or mixture thereof.
The method for blast cleaning of claim 23 wherein said blasting medium to pressurized gas weight ratio is about 0.1 to 0.4.
Dependencies are inferred from the claim text.