A dry shotcrete spray gun with functions of intelligent positioning, pressure control and mixing

Abstract

The invention relates to a dry-sprayed concrete spray gun with functions of intelligent positioning, pressure control and stirring, and belongs to the technical field of concrete spraying tools. The feed pipe, quick-setting agent ring, pressure water ring, mixing chamber and discharge pipe are set in sequence and there is a shell on the outside. There are threads inside the stirring chamber, and there are fixed gears meshing with the transmission gear outside. The transmission gear is driven by a motor, and the shell There are multiple radar transceivers on it, and multiple radar transceivers are connected with the computer radar distance analysis system and the compressed air pressure control system for real-time data transmission. The invention avoids the generation of dust, avoids the waste of concrete, ensures the strength of the concrete, makes the concrete adhere firmly and is not easy to drop.

Description

technical field [0001] The invention relates to a dry-sprayed concrete spray gun with functions of intelligent positioning, pressure control and stirring, and belongs to the technical field of concrete spraying tools. Background technique [0002] Concrete spray gun is a device that uses compressed air to spray concrete onto the working surface. It is often used to pour thin-walled structures such as tunnel linings, walls, and ceilings, especially the lining of air-film buildings or other structures and the protective layer of steel structures. . At present, sprayed concrete is mainly divided into dry spraying and wet spraying: [0003] Existing concrete dry spraying machine is during operation, although the operation operation such as mixing, transporting and spraying with concrete dry mixture is simple and because the concrete mixture of its spraying is dry, the dismounting and cleaning of dry spraying machine and The treatment of pipe plugging is more convenient, but it...

AI Technical Summary

Problems solved by technology

[0004] 1. When the traditional dry spray gun is in use, the dry concrete material is driven by compressed air, and it is only sprayed out after a short contact with the water at the nozzle of the spray gun. The contact time between the water added at the nozzle and the concrete is very short. The speed is too fast to fully mix with water, and the water pressure is lower than the wind pressure, so that the concrete cannot be fully wetted effectively, and the sealing structure is unreasonable, so the dry material will be scattered during the spraying concrete process, resulting in a large amount of dust;

[0005] 2. Use powdered quick-setting agent, which is artificially added, which is neither uniform nor continuous. At the same time, the most effective wall-hanging range for concrete spraying is about 1m-1.2m. As a result, the speed at which the end of the concrete hits the wall is too small, the impact force is not enough, and it falls off directly; the shorter spraying distance will cause the concrete to hit the wall too fast, the impact force is too large, and a large amount of concrete will rebound and splash, wasting concrete;

[0006] 3. The dispersal of cement dust and the waste of rebound materials change the mix ratio of concrete materials and reduce the strength of concrete;

[0007] 4. The concrete material is easy to enter between the rubber friction plate and the steel lining plate, which increases the wear of the rubber friction plate and the steel lining plate, and increases the cost of accessories

[0009] 1. The concrete material sprayed by the wet spraying machine is wet, and the transportation of wet concrete material is more troublesome than dry concrete material, and excess wet concrete is easy to cause waste;

[0010] 2. Use liquid accelerator, the price of liquid accelerator is twice that of powder accelerator, which increases the construction cost;

[0011] 3. Since the wet concrete is sprayed, it must be cleaned with water after each sprayed concrete operation, which is troublesome to use;

[0012] 4. The sealing of the jet machine is not good, the air leakage is serious, it is easy to block the pipe, and it is not easy to dredge;

[0013] 5. The concrete material is easy to enter between the rubber friction board and the steel lining board, which increases the wear of the rubber friction board and the steel lining board, and increases the cost of accessories

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