The continuous weighing mixer can be controlled by instruments and touch screens. It is supplied by multiple silos and is used for professional production of weighing and batching equipment for continuous conveying, measurement and automatic batching of powdered and granular materials (such as refractory raw materials, cement, fly ash and coal powder, etc.). The weighing and feeding system is composed of a hopper scale, a feeding screw conveyor, a discharging screw, a computerized Weighing system, a small (micro) material feeding device, etc. Weighing and measurement is carried out by several raw material conveying screws to convey the raw materials into the weighing scale in the set sequence. Each raw material is conveyed in sequence according to the weight set in the automatic control system. When the weight of material A is reached, the weighing instrument directly controls the start and stop of the screw of material A, and then starts the conveying screw of material B. When the weight of material B is reached, the screw of material B is closed and the screw of material C is started. This sequential conveying ensures the accuracy of measurement to a large extent. After the raw material counterweight measurement is completed, all the raw materials are conveyed to the bucket elevator by the discharge screw of the weighing scale. At the same time, the bucket elevator is started to send the raw materials to the mixing bin located on the main machine. At this point, the counterweight work of the raw materials is completed.

The hopper scale body is an integral flow hopper. The integral type hopper can ensure that when the discharge port is opened, each particle of the material in the hopper starts to move, flowing in the order that the material entering the storage bin first is discharged first. There are no dead corners in the hopper, the discharge is uniform, and the bulk density of the discharged material is stable, eliminating the uneven distribution, interruption, pulsation and spurting of the material. The pressure on any horizontal cross-section inside the hopper is relatively uniform, and the segregation of the material can be kept to a minimum. It is a flow pattern for the flow of bulk solid materials with predictive properties. For the adhesion of CaCO3 materials, the bridging performance is relatively strong. The discharge port of the auxiliary material scale hopper is equipped with a flow-assisting air cushion plate (a closed cavity covered with a micro-porous air hole plate). After compressed air is introduced, the powder material is suspended on the air cushion and remains in a fluidized state all the time, which can effectively prevent the powder material from arching. Its application adopts rubber patches or Teflon coating.

Automatically detect the operation status of all motors during the production process and various types of switches in the production process. Check the on-off status of the valve, detect the weight information of each weighing and packaging machine during the production process, and check the display, record and cumulative production volume during the production process.

The control function (the entire system realizes three-level control), PLC automatic control and keyboard and mouse control on the PC screen. Once the computer malfunctions, it is necessary to ensure that the PLC maintains production for a period of time until the computer eliminates the fault.