Diffuser system for abrasive blaster
OwnerPhhoung Taylor Nguyeninventor
Life of this patent
Estimating the term…
Abstract
A shutdown system for a media blast system includes a normally closed diverter path which remains closed to air flow during operation of the blast system. During shutdown, the air flow to the metering valve is shut off, shutting off the system. At the same time, the diverter path is opened, relieving pressure in the supply line by permitting pressurized air and abrasive in the supply line to back flow through the diverter from which it is exhausted, almost instantaneously shutting off flow through the nozzle. A diffuser system is included for receiving and exhausting residual abrasive media and for reducing the noise level of the exhausted air.
Claims13
A diverter/diffuser system for a media blasting system of the type having an air operated media metering valve for releasing a mixture of pressurized air and media through a downstream nozzle, the diverter/diffuser system comprising:
- a. A diverter pressure line connected to the metering valve and the diverter/diffuser system;
- b. A diverter switch for opening and closing air and abrasive flow to the diverter/diffuser system, wherein the switch is normally in the closed position during operation and is opened during shutdown mode;
- c. A diffuser for receiving the air and abrasive flowing through the diverter system and expanding and exhausting it from the system.
A diffuser for use in connection with a blast system for diffusing exhausted air and abrasive during shutdown, the diffuser comprising:
- a. A lower intake chamber for receiving air and abrasive flow from the diverter;
- b. An upper expansion chamber;
- c. A restrictor plate between the lower intake chamber and the upper expansion chamber;
- d. The upper expansion chamber further including an exhaust port for releasing air and abrasive from the system.
Dependencies are inferred from the claim text.