The weighing and feeding device, considering that most of the batching processes adopt the mode of multiple production lines in one location, has adopted a multi-channel Weighing system of "one machine for multiple feedings". Among them, the quantitative pre-feeding device is shared as one set, and the quantitative feeding device is designed for multiple channels. The quantitative feeding device mainly consists of a controllable feeding component, a weighing bin, a weighing module, a quantitative Feeder and a support frame, which serves the purpose of pre-feeding and stabilizing the flow. The micro quantitative feeding device mainly consists of a separated quantitative bin, a negative pressure suction type micro rotor feeding equipment, and a impeller pneumatic auxiliary jet cleaning device, achieving the function of stable quantitative feeding. The pneumatic suction conveying device is composed of a pneumatic suction pump and a discharge spray-blowing assist device, which is responsible for forcefully and thoroughly blowing the materials to the designated process pipeline. All links of the entire system equipment are fully sealed, ensuring that there is no dust flying when the powder passes through, making the on-site use clean and environmentally friendly.

During the operation of the Batching system, based on the characteristics of the micro-powder materials, it is necessary to ensure that the material pressure at the outlet of the weighing feeding bin remains stable. The material surface height and internal material flow of the weighing bin are effectively controlled. A controllable impeller feeder and pneumatic gate valve are selected as the pre-feeding equipment of the weighing bin, installed above it. Their function is to reasonably control the material surface height of the weighing bin. Control the operation of the quantitative feeder as needed to ensure the smooth and stable flow of micro-powder materials, and roughly adjust the flow rate to enable the materials to stably enter the micro-rotor quantitative feeding device. The weighing system controls the rotational speed of the micro rotor based on the comparison result between the instantaneous flow value of the micro rotor feeding equipment and the set value, ensuring that the instantaneous value always tracks the set value, thereby achieving accurate measurement and stable control of the micro powder.

The powder materials are smoothly fed into the weighing feeding bin through the feeding device. The stable pre-feeding is maintained by the operation of the quantitative feeder. According to the need, they are filled into the sector of the micro rotor feeding equipment. The variable frequency speed regulation motor transmits power to the micro rotor feeding equipment through the reducer and the main shaft, driving the micro rotor to rotate. As the micro rotor rotates, when the powd-filled sector reaches the discharge port, it falls into the wind-powered suction pump and, driven by the conveyed air, quickly reaches the lower-level process equipment. Meanwhile, based on the weight loss signals collected from the weighing bin, the feeding is corrected online in stages. The auxiliary cleaning device also starts working simultaneously to assist in cleaning the materials in the discharge sector, ensuring the completeness of the discharge.