Accelerating agent quantitatively-adding dry-wet dual purpose concrete spraying machine

Abstract

The invention discloses an accelerating agent quantitatively-adding dry-wet dual purpose concrete spraying machine. The accelerating agent quantitatively-adding dry-wet dual purpose concrete spraying machine is characterized by comprising a concrete mix conveying system, a spraying system used for spraying a concrete mix and a liquid state accelerating agent supply system, wherein the tail end of the concrete mix conveying system is arranged above the spraying system, and the liquid state accelerating agent supply system is arranged at one side of the spraying system. The concrete mix conveying system, the spraying system and the liquid state accelerating agent supply system are all arranged on a base plate, and the concrete mix conveying system is obliquely upward arranged. The accelerating agent quantitatively-adding dry-wet dual purpose concrete spraying machine has the advantages that concrete materials are conveyed through chained driving and driven components, the sealing area is reduced, and the weight is lowered; through the vertical arrangement of a driving chain wheel and a driven chain wheel, the operation of the spraying machine is convenient to observe, and the spraying machine is convenient to repair; through secondary ensealing a discharge port of a discharge pipe, it is guaranteed that the concrete mix are blown to the discharge port smoothly; through the cyclic utilization of wind exhausted from a tailing fluid director into a gas-tight chamber, the discharge of concrete mix is facilitated.

Description

technical field [0001] The invention relates to a mechanical device for spraying concrete, in particular to a wet and dry concrete spraying machine with quantitative addition of accelerator. Background technique [0002] Dry (tidal) spraying machine is mainly used for dry spraying or tidal spraying, and is widely used in jetting support of underground mine roadway engineering at home and abroad. The working principle of the dry (tide) jetting machine is: the material rotates with the rotor at a certain speed in the material cup, under the action of pressure and air jet, the material is transported to the nozzle, and sprayed out by adding water at the nozzle. According to the mechanical structure, the dry (tide) spray machine mainly includes tank type, screw type, rotor type and turntable type. The structure of the tank-type dry spraying machine is simple and easy to maintain, but it is relatively bulky; the screw-type spraying machine has a small volume and low feeding heig...

AI Technical Summary

Problems solved by technology

During the spraying process, a large amount of dust and rebound are generated, which seriously pollutes the environment, wastes concrete materials, and endangers the physical and mental health of construction workers.

The strength loss of shotcrete is serious in the later stage, and the support strength is insufficient, which may easily cause landslides and bring hidden dangers to construction safety

The existing wet spraying process is immature, the supporting equipment is complicated, the cost is high, the pipes are prone to blockage, cleaning is difficult, and the construction progress is seriously affected; there are few wet and dry concrete spraying machines, and the on-site working conditions are very complicated, so it is necessary to use When there is only a wet concrete sprayer when there is a dry concrete sprayer, it needs to be dispatched from other places, causing construction delays, or replacing it with other machines, which can easily lead to low final accuracy

In addition, the jet machine needs to use a large wind pressure to blow the concrete material. The blowing of the concrete material by wind in one direction requires a large power. At the same time, this wind pressure cannot be recycled, and the utilization rate is low. Low

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