Weightlessness-principle-based powdery material continuous metering control method and device thereof

Abstract

The invention discloses a weightlessness-principle-based powdery material continuous metering control method and a device thereof. The device relates to a weightlessness balance and comprises a storage bin and a weighing bin which are arranged from top to bottom and communicated by virtue of a material conveying channel, wherein the material conveying channel between the storage bin and the weighing bin is provided with an upper pneumatic gate valve and a lower pneumatic gate valve which are used for controlling make-break of the material conveying channel, the material conveying channel between the storage bin and the weighing bin is also provided with a surge bin in a serial connection manner, the upper pneumatic gate valve is arranged on the material conveying channel between the storage bin and the surge bin, and the lower pneumatic gate valve is arranged on the material conveying channel between the surge bin and the weighing bin. By controlling opening and closing of the upper pneumatic gate valve and the lower pneumatic gate valve, material flows into the weighing bin by virtue of the surge bin, the storage bin is prevented from directly impacting the weighing bin, and the influence on the measuring accuracy of a weighing sensor is avoided.

Description

technical field [0001] The invention relates to a loss-in-weight scale device for continuously and automatically measuring and feeding materials, in particular to a method for realizing continuous measurement control of powdery materials through the loss-in-weight scale device. Background technique [0002] In industrial production, there are many places that need to accurately measure and control powdery materials. Quantitative feeding control systems have been widely used in various industries such as cement, metallurgy, chemical industry, food, and grain. In the cement industry, a typical example is the batching and feeding of raw materials, raw meal, clinker, coal powder and other materials. Quantitative feeding is playing an increasingly important role in industrial production. Because of its wide application, it is of great practical significance to improve the accuracy of the feeding system and the stability of measurement. [0003] The metering devices used in the c...

AI Technical Summary

Problems solved by technology

The disadvantages are: 1. In the volumetric measurement stage, the material in the fly ash bin directly impacts the weighing bin, resulting in a large impact force in the weighing bin, increasing the measuring range of the sensor, and reducing the measurement accuracy of the sensor in disguise; 2. Due to the powder The pressure of the coal ash...

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