Air blast blowdown silencer system for blast pot
OwnerPhuong Taylor Nguyeninventor
Life of this patent
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Abstract
The blowdown silencing system includes an initial restrictor in communication with a blast pot vessel for controlling the flow of pressurized air from the vessel into a first expansion chamber. The outlet of the first expansion chamber is in communication with a reducer. The reducer outlet is in communication with a shut-off valve, which may be manually controlled or automatic. The shut-off valve may be upstream or downstream of the reducer. The outlet of the reducer/shut-off valve is introduced into a muffler system which includes an exhaust path and a deflector for absorbing and/or deflecting abrasive particles which may be evacuated from the blast pot vessel during blowdown.
Claims16
A two stage silencer system for reducing noise during blowdown operation of a blast pot vessel used in abrasive blasting operations, the system comprising:
- a. A first expansion chamber in communication with a blowdown outlet port of the vessel;
- b. A second expansion chamber in communication with and downstream of the first expansion chamber, the second expansion chamber further including:
- i. A sound absorbing material;
- ii. An outlet redirecting airflow in a direction different from the direction of airflow in passing through the blowdown outlet port of the vessel;
- c. A shut-off valve positioned downstream of the first expansion chamber and upstream of the second expansion chamber;
- and
- d. A restrictor upstream of the first expansion chamber for controlling the flow of air from the blowdown outlet port of the vessel, wherein both the restrictor and the first expansion chamber are of a generally cylindrical cross-section and wherein the inner diameter of the first expansion chamber is approximately two and one half times the inner diameter of the restrictor.
Dependencies are inferred from the claim text.