| 摘要 |
PURPOSE: A recovering device of forced element particles for a short blasting is provided to simplify the structure and to reduce the production cost by using an air rocket nozzle having a venturi nozzle as a suction force generator. CONSTITUTION: An extended diameter portion having a suction pipe portion is connected with a secondary suction pipe(21). A shrunken diameter pipe is integrally connected with the lower part of the extended diameter portion. An air supply pipe(18) to be connected with an air supply line(22) of a compressor is inserted into the extended diameter portion. An air rocket nozzle(13) to be connected with a venturi nozzle(19) downward is connected with the end of the air supply pipe. Thereby, the structure is simplified.
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