Automatic batching system is a complete set of automation equipment to realize dynamic weighing and batching control through electrical control management and visualization man-machine software configuration. The electrical control part of the system adopts Siemens PLC, which is programmed and controlled according to the production requirements; the software adopts man-machine configuration, which is used to control the weight and flow of the materials loaded into the weighing hopper through the monitoring system and the PLC program according to the technological requirements so as to realize accurate measurement and batching. The software adopts man-machine configuration. With strong stability and high cost performance, the system can provide accurate measurement data and control means for production control and management of various industrial sites.

The dosing system is composed of a touch screen as the HMI, a weighing meter, a temperature control meter, as well as a water filling control and a starch delivery control device. The system is also equipped with a number of pumps, shut-off valves, liquid level and material level sensors. Through the screen to monitor the deviation of the dosing process, and automatically according to the proportion of the formula to correct the back of the dosing ratio, in order to ensure the accuracy of the formula; can be realized with the user's production management system of data communication, through the parameter setting, automatically according to the production of orders to be produced to determine the control amount of the program can be automatically modify the formula can be to meet the dosage production line of the technological requirements. The batching system adopts touch screen as the human-machine interface, weighing instrument, temperature control instrument, water filling control and starch conveying control device. The system is also equipped with a number of pumps, shut-off valves, liquid level and material level sensors. Through the screen to monitor the deviation of the dosing process, and automatically according to the proportion of the formula to correct the proportion of the dosing of the back to ensure the accuracy of the formula; can be realized with the user's production management system of data communication, through the parameter setting, automatically according to the production of the order to be produced to determine the amount of control, the program can be automatically modify the formula can be to meet the dosage production line of the technological requirements. Feeding system is suitable for the site without continuous dosage requirements, can be batch dosage, batch allows the existence of a certain time interval, kettle weighing before and after the feeding of the two batch time interval of 3 ~ 5min, each batch of material from a variety of materials, materials accounted for the ratio of the requirements of the process over a period of time in a relatively fixed proportion of the composition of a single material requirements are not stringent, as long as the proportion of the composition of the material in the more batches to meet the process requirements. Requirements can be. Automatic feeding system due to material measurement, transportation, adding and other aspects of the time can be overlapped, in the control process can be used in parallel, in order to save feeding time, improve feeding speed. Various materials are stored in different silos, silo feeding is generally used in the form of electric vibration feeding, screw feeding or gate feeding. Measuring silo and equipped with pressure or weighing module for force and power conversion, the signal is amplified by the secondary instrumentation processing access to PLC or DCS to complete the measurement. In some applications with wide time requirements, a measuring trolley can be used for uniform measurement, measuring trolley running along the track, positioned in turn to the bin under the proportional material dosage, the dosage of various materials using the subtraction method of calculation. There is also a single fixed measuring bin way, the bins in a ring-like distribution around a measuring bin, the measurement of the material also uses the subtraction method, the material from the chute or conveyor in order to proportionally add to the measuring bin. The materials after dosing and metering are assembled, generally forming a layer or segment distribution, and then conveyed to the receiving port by the conveying equipment (such as screws or trolleys) to enter the next process, i.e., completing a batch of material dosing.

Weighing system with PLC as the control core, including the actuator, voice alarm, weighing instrument system and other parts, mainly control the elevator, classifier, crusher, feeder, screw, valve and other components. The operator station and engineer station are set up in the central control room and connected to the general control room for system monitoring and management of the whole plant. The weighing system is divided into operator stations and engineer stations, and is connected via Ethernet. The operator station is the same as the engineer station, with some limited functions.

The dosing system is usually used for batch mixing of more than two kinds of raw materials in proportion, and the program control makes the batch mixing do continuous action, so as to achieve the uniformity of the mixing ratio performance. The human-machine interface is used to input the corresponding proportioning parameters, and the signal of each sensor is transmitted to the weighing instrument through the weighing module, and then the signal is converted by the weighing instrument and connected to the central controller, which, in combination with the set formula and according to the real-time data of each weighing unit, controls the dosing time and amount of dosing of each kind of material, and all the raw materials enter into the horizontal mixing machine after the weighing is finished.

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 batching and weighing system is realized by using fuzzy adaptive PID control. The parameters of the controller are adjusted online to track the given input, accelerate the adaptive process and reduce the tracking error. Through the microcomputer to connect a number of weighing feeder, can be used for bin batching, at the same time batching materials can be up to 9 ~ 12, to carry out a variety of materials continuous batching, based on the structure of the bucket scale, can directly carry out the weight calibration, through the weighing hopper each moment test calculated the actual discharge amount, and then closed-loop adjustment, so as to achieve a higher control accuracy.

The standard loading device is evenly distributed in the carrier (tank), and is connected with the bottom plate and the special force frame, and is connected with the control system. The hydraulic pump synchronously inputs the pressure from the divider to the cylinder, and the control force of the weighing control system ensures the balanced loading of the force and maintains the stability of the loading. The weighing sensor is affected by the force and reads the data through the weighing display. In order to realize the consistency of standard load values given by multiple groups of standard loading device units, the measurement module is used to feed the signal to the single chip microcomputer in real time, and the multiple groups of standard loading device units work synchronously.

Batching system can realize measuring and proportioning conveying for many kinds of materials, featuring accurate measuring, fast speed, no abrasion to materials and high measuring precision. It is characterized by high degree of automation, simple operation, environmental protection, accurate feeding and high proportioning accuracy. Through the computer control center, the whole production process can be viewed, and the operation process can be effectively controlled, which can eliminate the errors that may be caused by human operation. ​