Concrete mixing bunker as well as concrete wet-process injection system and method based on concrete mixing bunker

Abstract

The invention discloses a concrete mixing bunker as well as a concrete wet-process injection system and method based on the concrete mixing bunker. The concrete mixing bunker comprises a feeding pipe, wherein the feeding pipe is provided with a blending bunker, a water adding ring is connected to the feeding pipe and the front part of the blending bunker and connected with a water atomization chamber through a pipeline, and an inlet of the water atomization chamber is connected with a spherical nozzle; an air inlet of the spherical nozzle is connected with an air pipe, and a water inlet is connected with a water pipe; and a branch divided from an air pipe is connected to the feeding pipe behind the blending bunker. The injection system provided by the invention is additionally provided with the concrete mixing bunker for blending a moist concrete material into wet plastic material; and due to the adoption of the design of the mixing bunker, not only is a dry material wet spraying process realized, but also the problems of pipe blockage by concrete and discharge pulse can be avoided.

Description

technical field [0001] The invention belongs to the technical field of concrete spraying machines, and relates to the design of a concrete mixing bin, in particular to a concrete mixing bin and a concrete wet spraying system and method based thereon. Background technique [0002] Dry shotcrete is directly added to concrete and mixed dry materials in the shotcrete without adding water, so the construction site is dusty, which seriously endangers the health of workers. Since the water is added at the nozzle, not only the water-cement ratio of shotcrete is difficult to control, but also the cement hydration is not sufficient, resulting in large dispersion of shotcrete strength, large rebound, and serious waste. [0003] In tidal shotcrete, since the dry powder quick-setting agent is manually added into the dry spraying machine at the feed port of the dry spraying machine together with the mixture, the dry powder quick-setting agent cannot be added accurately. Moreover, when th...

AI Technical Summary

Problems solved by technology

[0002] Dry shotcrete is directly mixed with concrete and dry materials in the shotcrete without adding water, so the construction site is dusty, which seriously endangers the health of workers

Since water is added at the nozzle, not only the water-cement ratio of shotcrete is difficult to control, but also the cement hydration is not sufficient, resulting in large dispersion of shotcrete strength, large rebound, and serious waste

[0003] For tidal shotcrete, since the dry powder accelerator is manually added into the dry spray machine together with the mixture at the feed port of the dry spray machine, the dry powder accelerator cannot be added accurately

Moreover, when the amount of water added to the mixed tidal material is excessive, the mixture will condense and harden in the dry spraying machine and block the dry spraying machine or pipeline.

Compared with dry spraying, there are also fatal problems that are difficult to solve, such as large spray rebound and large intensity dispersion

[0004] The existing wet spraying method is difficult to implement and popularize, mainly because on the one hand, the spraying equipment is expensive, and on the other hand, the construction cost is too high. If the wet-mixed concrete material is not used in time, not only the amount of accelerator will be increased, but also it is difficult to ensure the strength of the sprayed concrete , a large waste of raw materials

[0005] Patent ZL200810130718.7 discloses a concrete dry material wet spraying machine. This model simply adds water to the delivery pipeline to achieve the effect of changing the dry material to wet material, without considering the change of the state of the concrete material from dry material to wet material. It will inevitably lead to concrete pipe blockage and discharge pulse, which will seriously affect the construction of sprayed concrete, and even lead to the failure of the wet spraying process.

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