US 11,548,115 B2 · Dry wet blast media blasting system

Abstract

A wet media blasting system with a water injection system that provides more uniform distribution of the water, air and media components for achieving better application of the mixture while minimizing the amount of water required to contain and minimize or eliminate airborne particulate matter such as dust produced during the blasting operation. By more thoroughly mixing the water into the abrasive/water mix, the amount of water required is reduced. The abrasive feed is placed and shaped to optimize spray coverage and minimize abrasive flow into injection space thus mitigating water nozzle clogs. The abrasive flow is shaped as it is released from the metering valve in order to tighten the abrasive flow before it enters into the blast air stream. The shaped and tightened abrasive flow is maintained at the lower portion of the blast air stream. This positions the abrasive flow in optimum placement for spray wetting the abrasive as it flows into and through the nozzle. This also mitigates nozzle clogging by directing most of the abrasive flow away from the water spray nozzle port.

Claims14

Dependent claims

A wet dry blast system comprising:

a source of pressurized air for providing a pressurized air flow;
a source of pressurized water for providing a pressurized water flow;
an abrasive media source to provide an abrasive media;
a water injection conduit configured to receive at least one of the pressurized air flow, the pressurized water flow, the abrasive media, and combinations thereof, to form a media mix therein;
a blast hose configured to convey the media mix received from the water injection conduit;
a blast nozzle coupled with the blast hose, and configured to release and deliver the media mix from the blast hose to a work surface;
and
a differential pressure gauge positioned between and in fluid communication with at least a portion of each of the pressurized water flow and the pressurized air flow in order to monitor the water pressure relative to the air pressure, and to provide an indication of a rate of the pressurized water flow.

5 more elements

Dependencies are inferred from the claim text.

Dry wet blast media blasting system

Life of this patent

Dry wet blast media blasting system

Life of this patent

Abstract

Claims14