U-shaped cavity rotor type concrete spraying machine for dry spraying and wet spraying

Abstract

The invention discloses a U-shaped cavity rotor type concrete spraying machine for dry spraying and wet spraying. The concrete spraying machine comprises a storage unit, wherein the storage unit is connected with a charging unit; a spraying unit is arranged at a lower part of the charging unit; a U-shaped cavity is formed in the spraying unit and is rotatably connected with a discharging unit; the discharging unit is provided with a liquid accelerating agent supply pump. The concrete spraying machine has the advantages that the structure is simple; during dry spraying, powder accelerating agents are quantitatively added to a powder accelerating agent stock bin above a charging machine, the powder accelerating agents and concrete mixes are transported to a sprayer for watering together, and a mixture is sprayed to a sprayed surface; during wet spraying, liquid accelerating agents are mixed with wet concrete at the sprayer via a supply pump, the mixture is sprayed to the sprayed surface, thus dry spraying and wet spraying are realized, and the problems of a lot of dust and large rebound quantity of dry spraying concrete can be effectively solved; meanwhile the problems of complex wet spraying process, difficulty in washing and high possibility of plugging can be solved.

Description

technical field [0001] The invention relates to a U-shaped cavity rotor type wet and dry dual-purpose concrete sprayer. Background technique [0002] Shotcrete is often used to pour thin-walled structures such as tunnel linings, walls, and ceilings, or linings of other structures, as well as protective layers of steel structures. Sand, gravel, water and admixtures are sprayed through pipes at high speed to the surface to be sprayed and solidified and hardened. [0003] At present, dry injection is used, and its working process is: the material rotates at a certain speed with the rotor in the material cup, and under the action of pressure and air injection, the material is transported to the nozzle, and sprayed out by adding water at the nozzle. According to the mechanical structure, the dry spraying machine mainly includes tank type, screw type, rotor type and turntable type. With wet spraying, the working process is: after the material is mixed with water in a certain pro...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the main purpose of the present invention is to provide a U-shaped cavity rotor type wet and dry dual-purpose concrete sprayer, which can effectively solve the problems of large dust and large rebound of dry sprayed concrete; at the same time, it can solve the problem of complicated wet spraying process , Difficult to clean and easy to clog

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