The automatic mixer communicates with PLC through serial port. According to the actual process of dosage process in the form of dynamic screen to reflect the feeding, dosage, feeding and related equipment operating status, operation when there is an overrun fault, alarm prompts, and start the alarm (sound, light) alarm, or shutdown, or change the warehouse, according to the operating data to make the state of the control analysis, with a different color bar graph to reflect the system's dynamic dosage process. According to the operation data, it can give the ratio or feeding quantity, and truly reflect the dosage status. Batching also has other functions, such as shift report, daily report, monthly report, annual report and other functions. It provides convenient management.

Weighing and mixing machine contains weighing instrument, weighing module, frequency converter and field control box. And leave the communication interface with the upper computer. The material is conveyed into the mixer. The weight signal is sent to the weighing instrument. Weighing instrument will load the weight signal through the operation and processing of the material weight, respectively, in the weighing instrument display. Weighing instrument and frequency converter control the screw conveyor speed to form a closed loop control. The built-in intelligent software regulator of the weighing instrument can set high, medium and low feeding to ensure the accuracy of dosage. The output of three sets of signals is used to control the frequency converter, which in turn controls the feeding speed of the screw feeder, thus achieving the purpose of accurate dosage. The weighing meter can set the feeding quantity manually or set the proportion through the two-way communication between computer and meter.

Weighing mixer consists of two parts: hardware and software. Hardware part is mainly composed of mixing tank body, mixing tank cover, agitator, load-bearing weighing module, weighing instrument, transmission device, shaft sealing device and other programmable controllers, the upper industrial control computer system, etc.; according to the actual situation of the process, the two raw materials in the two raw materials before the delivery of the computer matching, according to the operator set the ratio of the two raw materials (i.e., the percentage) on the touch screen, the computer will automatically calculate the operating According to the proportion (i.e. 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 signals sensed by the two kinds of electronic scales, the computer will analyze the calculation at any time and control the adjusting speed so as to achieve the set proportion.

When the weighing and loading system feeds and weighs, due to the influence of the dropout, when the feeding is stopped, there is still a part of the material falling into the hopper scale in the air in a free-fall manner. In order to ensure the dosage accuracy, it is necessary to design a control algorithm for the termination of the feeding advance, to control the termination of the feeding advance, in order to minimize the impact of the fall on the dosage accuracy, so that the actual dosage value is kept within the error range. The algorithm takes advantage of the fact that the dosage production process is characterized by repeated weighing, and the results of the current weighing are used to correct the termination feed advance for the next dosage. After a limited number of trial dosages, it is possible to keep the static weighing value of the dosed material within the margin of error.

The design of the weighing and mixing machine is centered on the computer, and the operation process is also centered on the computer, and the process of feeding, temperature control, and discharging are all carried out by the sequential instructions issued by the computer. Each step of the operation process is carried out through the computer prompts and manual confirmation, the operation of the site with the computer system to carry out. Except for the operations that require manual cooperation, all other processes are automatically controlled by the computer system. The discharge rate of the weighing system affects the temperature of the mixing kettle and is controlled by detecting and regulating the flow rate. The control program automatically changes the feed flow rate according to the internal temperature rise rate to ensure that the internal temperature does not exceed the required range. At the same time, the jacket flow can be adjusted to stabilize the temperature in the dosing kettle.

The feeding system mixes different kinds of raw materials proportionally according to the pre-determined formula. It adopts microcomputer control technology and is mainly composed of pulverizer, elevator, fan, feeder and distributor. The dosing part includes silo, feeder, electronic scale and mixer. The main function of the dosing part is to put all kinds of different raw materials into the respective hopper after the feeding equipment, and then feed into the weighing hopper according to the given proportion of the formula and weigh, and then send it into the mixing machine for a certain period of time for stirring, and then mix evenly into the finished product.

The weighing mixer adopts automatic control to realize the automatic control and supervision of raw material feeding, weighing and metering, vacuum feeding, dispersion and mixing, etc. The dispersion time and cylinder number can be selected and adjusted on the computer according to the production requirements, and the opening and closing of the motor equipment and the opening and closing of the feed valve in the process are controlled by the computer. Automatic filling line is adopted for filtration and packaging of finished products, and the palletizing process is robot palletizing.

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

Dust-free weighing and feeding system is composed of mechanical weighing frame, feeding mechanism, stainless steel weighing module, speed sensor, weighing instrument, driving part, frequency converter, control cabinet and other main components, which is a production measurement equipment for manipulating feeding, dynamic measurement and continuous transportation of powdery materials. According to the pre-determined quality ratio, the weighing system is a balanced weighing system for dosage and measurement of several substances in the weighed material. Weighing system is divided into single tube single layer and double tube double layer, single tube single layer together with the completion of measurement and transportation, double tube double layer structure, the upper layer of the completion of flow stabilization and transportation, the grass-roots level of the completion of measurement and transportation, flow stabilization effect is better and save space.