Dynamic regulating system of mix proportion of concrete mixing plant

Abstract

The invention provides a dynamic regulating system of the mix proportion of a concrete mixing plant. The dynamic regulating system comprises a sensor measurement system, a signal transmitting system, a central control system and a data storage system. The system is used for detecting the aggregate water content on line via a water content sensor installed on the inner wall of a stock bin or below a material outlet, and transmitting the water content information collected automatically to the central control system of the concrete mixing plant in real time; concrete mix proportion parameters can be amended automatically by the system according to the operational rule of increasing the aggregate and reducing mixing water, and the amount of concrete aggregate blended materials and the amount of mixing water blended materials can be regulated simultaneously so as to guarantee the uniformity and stability of concrete quality; the whole dynamic regulation process can be completed within seconds without affecting the production efficiency, so that the system can be widely applied to the concrete mixing plant in the field of civil engineering, not only can improve the automation degree of the mixing plant and improve the production quality of concrete, but also can reduce the working intensity of operators and reduce the personnel configuration, thereby lowering the cost greatly.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a dynamic adjustment system for the mixing ratio of a concrete mixing plant. Background technique [0002] There are inherent characteristics in the concrete production and manufacturing process: first, there are many factors and links that affect the quality, and there are many random factors, so it is difficult to keep the quality of concrete under effective control; second, there is a lack of effective methods and means for prior control of concrete quality , Quality inspection and acceptance lag, basically tantamount to "disposal after the event", and losses are often unavoidable when problems are found. [0003] Among many external factors, the fluctuation of the moisture content of the aggregate has the most significant impact on the quality of concrete, which is determined by the characteristics of the aggregate, which is obtained locally, produced in the open ai...

AI Technical Summary

Problems solved by technology

At this stage, the moisture content of aggregates is usually determined by regular sampling and drying. There is a prominent problem of long test time, which cannot meet the requirements of adjusting the water consumption of concrete at any time, let alone realize intelligentization.

However, in order to meet the needs of engineering construction, many units often adopt the simplest and most economical method, that is, artificially adjust the water consumption, and adjust the water consumption of concrete by 10kg / m 3 、20kg / m 3 Even 30kg / m 3 As a result, the water-binder ratio, mortar volume, mortar volume, etc. of the produced concrete will change significantly, resulting in the actual mix ratio of concrete seriously deviating from the target mix ratio, which will eventually lead to unpredictable potential quality problems

[0004] Therefore, in view of the frequent fluctuation of concrete quality caused by the change of aggregate water content, the lag of raw material test results and the problems of "yin and yang mix ratio" and "online deployment" in concrete quality management, as well as the existing industrial control management system of the mixing plant Without the disadvantages of prior control, the establishment of a dynamic adjustment system for concrete mix ratio based on online monitoring of aggregate moisture content can realize the convenience and scientificity of the adjustment of mix ratio parameters, and ensure the homogeneity and stability of concrete production quality. Lay the foundation for automated production management of concrete mixing plants

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