Wet type high-pressure hydraulic spraying device

Abstract

The invention discloses a wet type high-pressure hydraulic spraying device. With the wet type high-pressure hydraulic spraying device, the resilience quantity and the dust quantity of sprayed concrete can be effectively reduced, the working environment is improved, and the construction time and cost are reduced. The wet type high-pressure hydraulic spraying device comprises a feeding mechanism, a transporting mechanism, a coagulation accelerator supply machine, a power mechanism and a traveling mechanism, wherein the feeding mechanism, the transporting mechanism, the coagulation accelerator supply machine and the power mechanism are arranged on the traveling mechanism, the feeding mechanism and the transporting mechanism are connected, and the power mechanism and the feeding mechanism are connected. During operation, concrete aggregate enters the feeding mechanism for full mixing, then enters the transporting mechanism and is sent to a nozzle by pressing. A liquid coagulation accelerator is supplied by the coagulation accelerator supply machine and is pumped to a screw rod, the screw rod is connected with a high-pressure water pipe so that the coagulation accelerator is mixed with water, and the mixture is then sent to the nozzle via the high-pressure water pipe. In the nozzle, the concrete aggregate, the water and the coagulation accelerator are fully mixed and sprayed to the surface to be sprayed, and the concrete spraying process is completed.

Description

technical field [0001] The invention relates to a wet high-pressure hydraulic spraying device, in particular to a spraying device in which a liquid quick-setting agent is added in a dry mixing method. Background technique [0002] Concrete spraying machine is a kind of construction equipment widely used in engineering construction. It uses compressed air or other power to transport the mixture in a certain proportion through the pipeline and spray it on the sprayed surface at high speed to solidify and harden, so as to form the concrete support layer. Shotcrete technology has the advantages of simple process, low construction cost and wide adaptability, and has played an important role in various construction fields. [0003] At present, there are mainly two methods of preparing sprayed concrete, namely dry-mix spraying and wet-mix spraying. The dry-mix shotcrete is to deliver the dry mix (cement, aggregate and powder quick-setting agent) to the nozzle with the help of a j...

AI Technical Summary

Problems solved by technology

But there are also many inherent defects: ①Due to the addition of powdery accelerator, the dust is relatively large and the amount of rebound is large during construction, resulting in a large loss of aggregate and affecting the working environment; ②During mixing, the powder The shape accelerator is not sufficiently uniform, so the amount of accelerator is not easy to control, and the amount of accelerator has a significant impact on the performance of shotcrete in all aspects; ③The actual water-cement ratio is not easy to accurately control, Affect the quality of shotcrete

Similarly, it also has many deficiencies: ①The wet shotcrete construction process is more complicated than the dry shotcrete process, and the materials need to be used together, otherwise they will deteriorate rapidly and cannot be used and will be wasted; ②Poor adaptability to wet or water-bearing strata; ③Mechanical The equipment is complicated and huge, and the maintenance cost is high. It is very inconvenient to use for construction in areas that are difficult to enter and exit, and it lacks flexibility for projects with a small amount of use.

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