Uniform mixing type concrete injection device

Abstract

The invention proposes a uniformly mixed concrete spraying device, comprising a hard material delivery pipe, an elbow, a material delivery hose, a spray head, an accelerator tube and a mixing joint, a material delivery hard pipe, an elbow, a material delivery hose and a spray The heads are connected in sequence, the elbow is provided with a first air inlet, the first air inlet is used to blow the concrete coming in from the elbow and then sent to the spray head, and the mixing joint is provided with a connected second air inlet , Accelerator inlet and discharge port, the two ends of the accelerator tube are respectively connected with the discharge port and the injection head, and the second air inlet is used to blow the accelerator from the accelerator inlet and then send it to the Into the spray head and mix with the blown concrete. The first air inlet and the second air inlet of the present invention blow off the concrete and the quick-setting agent, and then send them to the spray head for uniform mixing. The concrete sprayed on the facility has the same setting speed, no cracks, and no drop. , there is no potential safety hazard, the amount of accelerator is small, and the cost is low.

Description

technical field [0001] The invention relates to a concrete spraying device, in particular to a uniformly mixed concrete spraying device. Background technique [0002] In recent years, in order to adapt to economic development, the country has continuously increased its investment in infrastructure such as roads, bridges, and tunnels. During road construction, especially in places with complex terrain, it is necessary to do a lot of temporary protection or initial support when building tunnels. Protective spraying is an essential process. In the current construction, the spraying of the initial support of the tunnel is mainly done by automatic spraying machine or manual spraying. The spray head is sprayed by an automatic spraying machine or manually controlled by the spray head. In order to make the concrete sprayed on the facility set quickly, the accelerator must be added automatically or manually when the spray head is sprayed out. However, when the existing accelerator ...

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Problems solved by technology

[0003] The invention proposes a uniformly mixed concrete spraying device, which solves the problem of uneven mixing between the accelerator and concrete in the existing spraying device, which affects the quality and service life of the sprayed concrete facilities, causes potential safety hazards in the facilities, and reduces the construction cost. also high defect

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