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

A technology for powdery materials and control methods, applied in measuring devices, weighing equipment for continuous material flow, weighing, etc., can solve the problems of reducing the measurement accuracy of the sensor, increasing the range of the sensor, and the pneumatic gate valve is not tightly closed.

Active Publication Date: 2011-09-14
HENAN FENGBO AUTOMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 bin is high. During the measurement stage of the weightlessness method, the pressure in the fly ash bin directly presses on the pneumatic gate valve on the weightlessness scale, which will cause the pneumatic gate valve to be closed tightly, and the fly ash will flow freely. into the weighing chamber, which seriously affects the measurement accuracy

Method used

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

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Embodiment Construction

[0023] The embodiment of the powder material continuous metering control method based on the principle of weight loss of the present invention, the method relates to a weight loss scale device, the weight loss scale device includes a feed bin and a weighing bin connected from top to bottom through a feeding channel, the feed bin and the weighing bin A buffer bin is installed in series on the conveying channel between the heavy bins, and an upper pneumatic gate valve, a buffer bin and a weighing bin are installed on the feeding channel between the material bin and the buffer bin to control the on-off of the conveying channel. A lower pneumatic gate valve for controlling the on-off of the section of the conveying passage is provided on the conveying passage between them. The method includes the following steps:

[0024] 1) The upper pneumatic gate valve is opened, and the powdery material flows from the silo into the buffer silo;

[0025] 2) When the material in the buffer bin r...

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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...

Claims

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Application Information

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IPC IPC(8): G01G11/00G01G13/20
Inventor 杨德柱李维庆李文星林勇军韩华
Owner HENAN FENGBO AUTOMATION CO LTD
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