| 摘要 |
PURPOSE: A shotcrete spray nozzle device is provided to improve the construction efficiency of shotcrete by reducing the rebound rate of the shotcrete. CONSTITUTION: A shotcrete spray nozzle device(1) comprises a nozzle head(10), a venture part(20), and a nozzle body(30). The nozzle head is connected to a spray pipe(2) for spraying concrete mortar and has a first hollow. The venturi part is connected to the top of the nozzle head and has a second hollow connected to the first hollow and multiple intake holes. The nozzle body is coupled to the outer circumference of the venturi part and supplies air to the venturi part.
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