| 摘要 |
The present invention is a micro-abrasive blasting device ( 75 ) constructed from a disposable pipette structure ( 80 ) comprising a delivery conduit ( 30 ) extending from a delivery conduit inlet ( 35 ) through a tapered section ( 33 ) to form a delivery conduit outlet ( 37 ) and a inlet port ( 27 ); contiguous pipette structure ( 80 ) expands from inlet port ( 27 ) to form a hollow bulb mixing chamber ( 23 ) and then narrows to form a discharge port ( 29 ) section; a discharge conduit ( 10 ) is in fluid communications with discharge port ( 29 ) and extends from a discharge conduit inlet ( 12 ) internal to mixing chamber ( 23 ) to a discharge conduit outlet ( 14 ) external to mixing chamber ( 23 ); a particulate matter ( 50 ) is disposed within mixing chamber wall ( 25 ); discharge conduit inlet ( 12 ) abuts inlet port ( 27 ) preventing particulate matter ( 50 ) from exiting mixing chamber 23 . A separation gap ( 45 ) between the delivery conduit outlet ( 37 ) and discharge conduit inlet ( 12 ) is created as discharge conduit ( 10 ) is displaced so discharge conduit inlet ( 12 ) no longer abuts inlet port ( 27 ); As pressurized-gas is supplied to micro-abrasive blasting device ( 75 ) through the delivery conduit inlet ( 35 ), the pressurized-gas flows through the delivery conduit ( 30 ) and out of the inlet port ( 27 ), into mixing chamber ( 23 ). As flow is initiated, particulate matter ( 50 ) instantaneously mixes with the gas-steam within hollow resilient bulb mixing chamber ( 23 ) and the powder-gas mixture flows through discharge conduit ( 10 ) to strike target surface ( 40 ).
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