Detection control device and method for fineness modulus

Abstract

The invention discloses a detection control device and method for a fineness modulus. A sampling device, drying equipment, a NO.2 vibration sieve, an automatic weighing device and a packaging mechanism connected through a material shunting device are arranged on the material outlet of the fineness modulus regulation and control device of a sand making production line, wherein the sampling device,the drying equipment, the NO.2 vibration sieve and the automatic weighing device are connected in sequence; in addition, the above equipment is connected with a PLC (Programmable Logic Controller) control system; the sampling device carries out sampling; samples enter and leave the drying equipment to be quickly dried; the NO.2 vibration sieve carries out sieving grading; the automatic weighing device weighs each grade of sand materials; the PLC control system carries out analysis comparison; finally, a comparison result is fed back to the fineness modulus regulation and control device to carry out real-time detection, regulation and control, and in addition, a detection sample is packaged and archived through the packaging mechanism. According to the detection control device, automatic detection can be realized, flexibility is high, the fineness modulus of a finished sand product can be monitored, regulated and controlled in real time, regulation and control accuracy is high, productquality stability is guaranteed, and the quality and the production efficiency of the product are improved.

Description

technical field [0001] The invention relates to a fineness modulus detection and control device and method, and belongs to the technical field of sand production equipment. Background technique [0002] The fineness modulus is an index that characterizes the degree of fineness and type of sand particle size. The larger the fineness modulus, the coarser the sand. The stability of the fineness modulus of machine-made sand determines the quality stability of concrete. The fineness modulus is related to the sieve percentage of the sand distribution at each stage, that is, it is related to the mass ratio of the sand distribution at each stage. In the traditional machine-made sand production system, it can only be trial-produced by adjusting the screen size and material ratio in general. The sand pile sampling method is used to judge the gradation of the machine-made sand. The sand pile sampling inspection is usually carried out by manual sampling in the finished product silo, and...

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Problems solved by technology

The fineness modulus is related to the sieve percentage of the sand distribution at each stage, that is, it is related to the mass ratio of the sand distribution at each stage. In the traditional machine-made sand production system, it can only be trial-produced by adjusting the screen size and material ratio in general. The sand pile sampling method is used to judge the gradation of the machine-made sand. The sand pile sampling inspection is usually carried out by manual sampling in the finished product silo, and is obtained by drying, screening and calculation in the laboratory, which cannot give timely feedback on the fineness model of the sand. The quality parameters of the machine-made sand cannot be accurately controlled. Since the fineness modulus of the machine-made sand cannot be detected online and automatically adjusted and controlled, concrete production enterprises often need to change the formula and test, which not only increases the labor intensity of the staff, but also takes time. It is laborious, and the stability of the concrete cannot be guaranteed, so that there are great safety hazards in the engineering construction.

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