The mixing system adopts human-computer interaction and management functions, with the ability to process information in Chinese, and adopts Chinese prompts in the menu mode. The operator can select and perform various operations by function Casgood or cursor movement. The system provides a fixed recipe library. There are as many as 100 kinds of formulas. The operator can query, modify or assign a working formula to the stored formula, or temporarily input and erase a formula. The system has dynamic display and printing functions. In the process of dosage, the computer can display the dosage control flow chart on the CRT screen and indicate dynamically with the cursor, which can display the title and dosage weight at the same time, etc., so that the operator can understand the dosage situation at a glance. The printer can print in Chinese. The system can provide various production information reports to the production management department.

The weighing and mixing system collects the weighing signals of each dosage scale in real time, can automatically tare, automatically calibrate zero and automatically correct the error, and selects and controls the dosage according to the specified formula ratio and relevant algorithms, and judges at any time and sends out the switching signals to the corresponding feeder, electronic weighing door, and mixing machine door. In the process of dosage, it is an important guarantee for safe production to detect the operation status of controlled equipment and find out the problems in time. The system can dynamically detect the status of drive motor, travel switch and other equipments of each feeder and electronic weighing gate, and alarm immediately once errors and failures are found.

The weighing and dropping system realizes the process control of batching. According to the need of batching, various control function program modules and control subroutines are designed in the control software. It mainly includes "control system state initialization", "automatic work control", "manual work control", "automatic batching", "state test", "fault detection" and so on. The dosing control software follows the automatic control and manual control modes. In order to improve the performance of the batching control system, improve the accuracy and speed of the batching system, and ensure the reliable operation of the control system, effective measures are taken.

In the batching control field environment, the analog signal of the weighing module is transmitted by shielding and hardware filtering, and the digital signal after A/D conversion is filtered and processed by software, so that the high precision weighing value can be obtained. In the process of system batching, the control can automatically detect the failure of the switch of the weighing door and the mixing door and the failure of the feeder. It is obtained by detecting the status signal of the feedback stroke switch. When a fault or error is detected, the fault location is displayed on the CRT screen.

The mixing dosing system outputs a certain number of square wave pulses through PLC programming to control the Angle of the stepper machine and then control the dosing feed of the servo mechanism. The loop pulse distributor distributes the control pulses output by the programmable controller to the corresponding winding according to the power sequence of the stepper motor. The pulse distribution of the stepper motor controlled by PLC can be realized by software such as batching, capping, sealing, palletizing, weighing equipment and corresponding conveying.

The automatic batching system is used as a central control area to complete the whole process of weighing and feeding. Before the equipment is equipped, the staff will open the switch, and the PLC central control area will send a signal to start the corresponding solenoid valve to inject the material into the reactor. At the same time, the weighing module will start to work. When the amount of the reaction tank is increased to the equivalent of the weight set by the quantitative setting reference, the central control area receives the action signal of the weighing module, and immediately closes the solenoid valve for adding materials and stops adding materials.

When the powder dosage system is refilled in the specified amount, the valve is closed to stop the addition of liquid, the stirring switch is activated, and the metering and dosage control starts to automatically add the material to the reaction tank according to the non-linear speed required by the dosage process, and then it flows from the silo to the dosage tank with the inlet pneumatic valve open, and the pump stops when all the material in the silo has flowed into the stirring tank. The weighing module monitors the flow rate of the solution injected into the dosing tank in real time and transmits the measured pulse range to the PLC, which calculates the weight of the solution and transmits the data of the total injected capacity to the host computer.

The automatic batching system is used as a central control area to complete the whole process of weighing and feeding. Before the equipment is equipped, the staff will open the switch, and the PLC central control area will send a signal to start the corresponding solenoid valve to inject the material into the reactor. At the same time, the weighing module will start to work. When the amount of the reaction tank is increased to the equivalent of the weight set by the quantitative setting reference, the central control area receives the action signal of the weighing module, and immediately closes the solenoid valve for adding materials and stops adding materials.

The pneumatic mixing system feeds the material into the weighing bucket according to the specified proportion of the formula, and weighs it, and then sends it to the mixing machine for a certain time to stir and evenly mix into the finished product. All kinds of fixed formulations are input into the computer in advance, and the computer controls the feeding, weighing and mixing according to the proportion of the formula, and detects the signal of the weighing module in real time, makes a judgment, and issues orders to the executive mechanism of the batching, so as to realize the batching automation. The entire production system is equipped with manual control auxiliary mechanism, which can be controlled according to automatic or manual operation.