The distributed Batching system is a production batching machine used in industry for different powder or liquid main and auxiliary materials to automatically and precisely formula. It is usually composed of a Weighing system, control instruments, PLC system and upper computer, etc. Three Weighing modules installed at the bottom of the reaction vessel transmit the weight signal of the vessel body to the junction box. The junction box connects the weight signals output by the weighing modules in parallel to the weighing terminal or weighing controller. The weighing terminal or weight transmitter processes the weight signals into corresponding weight data. The weighing terminal usually provides certain input and output control functions for the on-site actuator, while the weighing controller generally provides weight data and other information to the upper-level feeding system in a specific form. The fully automatic weighing and distribution function of powder materials, granular materials, oil materials and other materials is mainly applicable to the production of large and small material formulas Intelligent storage of production formulas, real-time access to production formulas, and storage of production data, etc., facilitate product quality traceability.

The control system of the distributed batching machine integrates relay control, computer control and PLC control. As the core component of the control system, the PLC controller processes the input information according to the preset program. Strain transmitters and temperature transmitters collect and adjust the signals from the load cell and temperature sensor, and input them into the PLC controller in real time. The switch signals from the limit switches and the contacts of each primary circuit component are directly input into the PLC. These input signal quantities are processed by the PLC according to the control logic program and then output to control the on-off of the primary circuit of the actuator or device, thereby achieving the control purpose. The central management computer realizes functions such as printing production reports, fault alarm, status monitoring, setting data management, and manual operation. Through serial port communication, the computer sends keyboard control instructions, mix ratio setting values, temperature setting values, weighing drop compensation values, timer setting values, etc. to the PLC.

To achieve the required measurement accuracy, there are mainly two methods for the measurement of heat aggregates: primary weighing and secondary weighing. One-time weighing: The opening degree of the silo door remains constant. When the aggregate reaches a certain value, the silo door will close in advance under the control of the PLC (drop compensation). This technology has been successfully applied in the type of distributed batching machine, and the batching accuracy has been well controlled. The second weighing is divided into the first rough weighing and the second precise weighing. During the rough weighing, depending on the size of the set values of each silo, the silo door is relatively large, and 70%(adjustable) of the set values of the aggregates in each silo is weighed quickly. For the remaining 30%, the silo door is closed slightly for the second precise weighing. When measuring, the weights should be accumulated according to the preset gradation, and the measurement sequence should be from large particles to fine particles in sequence.

When the batching machine starts and its initial state is normal, it will automatically start the exhaust fan, blower, drying drum, etc. in the order of starting load from large to small. When the batching machine stops and the exhaust temperature meets the requirements, each moving mechanism shall be stopped in sequence according to the reverse start-up order and the delay value set by the timer.

When the batching machine starts production, the visual control process of ignition must ensure the heating temperature of the particles. After pressing the ignition button, the control system automatically detects the ignition status and the temperature of the exhaust port, and determines the feeding time of the particles. When the temperature at the exhaust port reaches the preset feeding temperature, the granular Feeder starts to work, feeding the material to the conveying flat screw, and then the material is conveyed to the drying drum through the inclined screw for heating.