Spray gun for concrete wet spraying machine

Abstract

The invention relates to the field of wet spraying machine equipment, and discloses a spray gun for a concrete wet spraying machine. The spray gun comprises a flow mixer pipe, an annular pipe, a compressed air joint and a nozzle; the outer surface of the flow mixer pipe is fixedly sleeved with the annular pipe, the compressed air joint is fixedly mounted at the top of the annular pipe, and the nozzle is fixedly mounted on the side surface of the flow mixer pipe; and the top and the bottom of the inner side of the annular pipe are fixedly sleeved with fixing pipes, one ends of the two fixing pipes extend into the flow mixer pipe and are fixedly sleeved with a flow guide block, and the flow guide block communicates with inner cavities of the fixing pipes and an inner cavity of the annular pipe. According to the spray gun for the concrete wet spraying machine, through the design of the flow guide block and an exhaust plate in the flow mixer pipe, compressed air which is sprayed out of exhaust holes in the exhaust plate and contains an accelerating agent can completely act on concrete in the nozzle, and it is guaranteed that the accelerating agent and the concrete are evenly mixed, sothat the accelerating effect of the sprayed concrete is improved, and the rebound rate of the concrete is effectively reduced.

Description

technical field [0001] The invention relates to the field of wet spraying machine equipment, in particular to a spray gun for a concrete wet spraying machine. Background technique [0002] Wet spraying machine is the main machine tool for anchor spraying support with good comprehensive performance such as reducing dust, reducing rebound and saving materials at home and abroad. At present, it is mainly used in mines, culverts, building foundation pit support, river slope protection and other projects. It is mainly divided into drag-type hand-held rotor hand-held wet sprayer and pumping hand-held wet sprayer with large boom. Among them, the spray gun is an important component of the wet sprayer to spray concrete. [0003] The working principle of existing concrete wet spraying machine spray gun is as follows: (reference image 3 , where f represents the direction of compressed air power, and F represents the direction of concrete power): Concrete is conveyed into 1 through the...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a spray gun for concrete wet spraying machine, which has the advantages of low concrete spray rebound and high spray quality, and solves the technical problems mentioned in the background technology

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