Concrete injection system and control method thereof

Abstract

The invention provides a concrete injection system and a control method thereof. The concrete injection system comprises a concrete pump, a compressed air pump, a plurality of additive control units,an information control system and a rebound rate detection system. Each additive control unit comprises an additive pump, a control device and a flow mixing device. The control method includes the following steps of firstly, setting a parameter value in the information control system; secondly, starting pumping, conveying additives to the corresponding flow mixing devices, making concrete sequentially pass through all the flow mixing devices to be mixed with the additives, and controlling the initial flow rate and mixing time of the additives by the control devices according to an instructionof the information control system; thirdly, injecting the concrete; and fourthly, detecting the rebound rate data of the concrete and feeding back the data by the rebound rate detection system, and ifthe information control system judges that the current data is not up to standard, sending additive adjusting instructions to the control devices, and executing the process repeatedly until the datais up to standard. By means of the concrete injection system and the control method thereof, online optimization of proportions of concrete mix is realized, and construction cost is reduced.

Description

Technical field [0001] The invention relates to the technical field of concrete wet spraying equipment, in particular to a concrete spraying system and a control method thereof. Background technique [0002] Shotcrete is a kind of concrete formed by mixing cementitious materials, coarse and fine aggregates, admixtures and other materials in a certain proportion and then sending them to the spraying equipment. With the help of compressed air or other power, it is sprayed to the sprayed surface at high speed. According to the difference between the mixing method and the pressure conveying method, the construction process of sprayed concrete can be divided into dry spraying and wet spraying. The former has problems such as large dust and poor concrete homogeneity, and has been gradually eliminated. In the spraying process, it has the advantages of relatively little dust and easy control of the quality of wet sprayed concrete. It has become the main construction method of sprayed con...

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Problems solved by technology

[0006] Limited by the structure of the existing wet spraying trolley, the current spraying method cannot optimize the concrete mix ratio in real time. Therefore, when the test spraying is carried out to obtain the best spraying effect and the minimum rebound rate, or the actual construction is blocked When there is a problem with tube or high springback rate, it usually requires multiple manual re-batching, transporting materials repeatedly, and repeating the operation process, which causes a lot of material waste and time consumption

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