The Batching system consists of hardware and software. The hardware part mainly consists of the mixing tank, the mixing tank lid, the agitator, the weighing module, the weighing instrument, the transmission device, the shaft seal device, etc. The programmable controller and the upper industrial computer Weighing system are composed. The software part mainly includes the control algorithm of the programmable controller and the monitoring program of the upper industrial computer. In the industrial batching process, there are two common weighing methods, namely feed weighing and discharge weighing. At the beginning of weighing through the feeding equipment to the weighing hopper feed, stop feeding when the weighing value reaches the set value. Then open the gate and unload the material. When the feeding type weighing is used, due to the influence of the drop, when the feeding is stopped, some materials still fall into the weighing hopper in the air in a free fall. In order to ensure the batching accuracy, the lead amount of materials should be controlled to reduce the impact of the drop on the batching accuracy, so that the actual batching value is kept within the error range. This paper makes use of the characteristics of repeated weighing in the batching production process, and uses the results of the next weighing to correct the lead amount of the final feeding. After a limited number of trials, the static weighing value of the prepared material can be kept within the error range.

According to the actual situation of the process, before the two kinds of raw materials are matched by the computer, according to the ratio (that is, percentage) of the two kinds of raw materials set by the operator on the touch screen, the computer will automatically calculate the running speed, and then according to the weight signal induced by the two Electronic scales, the computer will control and adjust the speed through calculation and analysis at any time to achieve the set ratio requirements. Before operation, set the corresponding set value to automatically control the normal operation of the equipment, including PID adjustment; The parameters of instantaneous flow, daily, monthly and annual accumulation of the batching process are tested and monitored. In the entire production process, the PLC will weigh each raw material according to the plan, and the computer can carry out statistics and analysis of various data in the production process, and automatically generate daily and monthly reports including the formula and the amount of various materials, which will be conducive to modern management such as product cost accounting and quality analysis.