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A powder metering system and its control method

A control method and metering system technology, applied in the direction of mixing operation control, chemical instruments and methods, and mixing operation control devices, can solve the problems of inaccurate dynamic metering, unstable discharge flow, and accelerated outflow of powder materials, etc., and achieve reduction The effects of impact, stable and uniform discharge, and stable discharge flow

Active Publication Date: 2021-10-15
德通智能科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The decrement weighing method is widely used in the cement metering system of the stabilized soil plant mixing equipment. In the actual use process, it has the advantages of high batching accuracy and less environmental interference; It will form a certain impact force on the bottom of the weighing bin. If the discharge device still maintains the speed of normal operation, it will cause the powder to flow out at an accelerated rate, resulting in excessive flow, inaccurate dynamic measurement, large fluctuations in ingredients, and unstable discharge flow. and other phenomena, which affect product quality; therefore, in order to solve the above problems, a powder metering system and control method are needed

Method used

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  • A powder metering system and its control method
  • A powder metering system and its control method

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Embodiment 1

[0022] Such as figure 1 As shown, a powder metering system includes a control system 1: used to receive instructions and data, and generate control signals according to the instructions and data to control the feed device 3, the discharge device 4, the load cell 5, etc. operation, the control system 1 can adopt a PLC controller;

[0023] Weighing bin 2: used to store powder;

[0024] Feeding device 3: feed the powder;

[0025] Discharge device 4: discharge and convey the powder;

[0026] Load cell 5: measure the weighing bin and the powder in the weighing bin;

[0027] The discharging device 4 is electrically connected to the frequency converter 6 , and the feeding device 3 , the load cell 5 and the frequency converter 6 are all electrically connected to the control system 1 .

[0028] Both the feeding device 3 and the discharging device 4 are screw conveyors.

[0029] Such as figure 2 As shown, a control method for a powder metering system. When discharging, according ...

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Abstract

The invention discloses a powder metering system and a control method thereof. The metering coefficients are sequentially assigned to the control system by combining the set weight values ​​when the metering coefficients are recorded in a database, and the control system multiplies the corresponding metering coefficients by the corresponding metering coefficients. The output frequency of the frequency converter of the discharging device is used as the current output frequency to adjust the output frequency, and the output frequency of the frequency converter of the discharging device is corrected in real time to change the output of powder, ensure the stability of powder output, and reduce the damage caused by feeding. Impact, reduce measurement error, more accurate measurement.

Description

technical field [0001] The invention relates to the technical field of powder metering, in particular to a powder metering system and a control method thereof. Background technique [0002] Stabilized soil plant mixing equipment is a mixing unit specially used for mixing various stable mixtures with hydraulic materials as binders. It is widely used in the construction of base and subbase of high-grade highways and urban roads. The decrement weighing method is widely used in the cement metering system of the stabilized soil plant mixing equipment. In the actual use process, it has the advantages of high batching accuracy and less environmental interference; It will form a certain impact force on the bottom of the weighing bin. If the discharge device still maintains the speed of normal operation, it will cause the powder to flow out at an accelerated rate, resulting in excessive flow, inaccurate dynamic measurement, large fluctuations in ingredients, and unstable discharge fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28C7/04B28C7/06
CPCB28C7/0418B28C7/044B28C7/06
Inventor 张良奇李冠峰李晓军黄凯强李鹏
Owner 德通智能科技股份有限公司
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