| 摘要 |
PROBLEM TO BE SOLVED: To provide a projection material mixing injection device that can easily control projection material weight compared with air weight and that also has a simple structure to reduce spare parts for wear. SOLUTION: The basic body has a vertical projection material supply tube on the top, a compressed-air conduit, whose pointy end is inserted into the tapered slant part of the body, on the back of the body, and an injection nozzle fit in the front side. A secondary air suction port is provided at the side of the projection material supply tube, an inclined import that approaches inside of the body as it goes forward is provided in the body connected with the lower end of the projection material supply tube, and the back end of the injection nozzle is provided on the slant inner face of the injection nozzle as it goes forward.
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