Control of wet abrasive blasters
AssigneeGraco Fluid Handling (B) Inc.
InventorJohn McIntyre
Life of this patent
Estimating the term…
Abstract
An incoming water control for use in a wet abrasive blasting system includes an incoming water supply with a pressure of between 1 psi and 200 psi, a pressure reducing valve for reducing the pressure of the incoming water supply, and an air over water pneumatic piston style water pump that incorporates check valves. The pump receives water having a water pressure of less than 20 psi from the pressure reducing valve and the pump delivers water to a blast pot pressure vessel of the wet abrasive blasting system to pressurize the blast pot pressure vessel filled with water and abrasive.
Claims6
An incoming water control for use in a wet abrasive blasting system that includes a blast pot pressure vessel for containing water and abrasive, a hose that connects an outlet of the blast pot pressure vessel to a mixing point at which water abrasive mixture is mixed with compressed air, and a blast nozzle from which an air water abrasive mixture is delivered, the water control comprising:
- an incoming water supply that delivers water with a pressure of between 1 psi and 200 psi;
- a pressure reducing valve for reducing the pressure of water from the incoming water supply;
- and
- an air overwater pneumatic piston style water pump incorporating check valves that receive water having a water pressure of less than 20 psi from the pressure reducing valve and delivers water to the blast pot pressure vessel to pressurize the blast pot pressure vessel filled with water and abrasive.
A wet abrasive blasting system comprising:
- a blast pot pressure vessel for containing water and abrasive;
- an incoming water supply that delivers water with an pressure between 1 psi and 200 psi;
- a pressure reducing valve for reducing the pressure of water from the incoming water supply;
- an air over water pneumatic piston style pump incorporating check valves that receives water having a water pressure of less than 20 psi from the pressure reducing valve and delivers water to the blast pot pressure vessel to pressurize the blast pot pressure vessel;
- a mixing point at which a water abrasive mixture from the blast pot pressure vessel is mixed with compressed air;
- and
- a blast nozzle from which an air water abrasive mixture produced by the mixing chamber is delivered.
Dependencies are inferred from the claim text.