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Weighing check method for belt weighers

A calibration method and belt scale technology, applied in the field of electronic calibration, can solve problems such as production interruption

Inactive Publication Date: 2018-06-29
GUANGZHOU DEV GRP CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This physical verification method separates the verification method from production activities, and production is interrupted during the verification process, which has a great impact on the entire production process

Method used

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  • Weighing check method for belt weighers
  • Weighing check method for belt weighers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A weighing verification method of a belt scale, such as figure 1 shown, including steps:

[0019] S1. Belt scale zero point calibration or hopper scale calibration;

[0020] The steps of zero-point verification of the belt scale include: pre-setting the quality Z of the standard empty belt scale, and the straight line is y=Z; the belt scale runs stably for 30 minutes under the condition of no load; records the change of the quality of the empty belt scale with time, and depicts Zero-point drift curve; compare the straight line with the zero-point drift curve, count the number of times N that the zero-point drift curve crosses the described zero-point curve, if N>0, then record the empty belt scale quality data every 3 minutes, the data Sum denoted as ∑Z i , calculate and obtain the deviation error of the mass of the empty belt scale: K=(∑Z i / N-Z) / Z×100%, the belt scale corrects the range calibration number E of the belt scale according to the deviation error K, obta...

Embodiment 2

[0029] A kind of belt scale measurement verification device, such as figure 2 As shown, the belt conveyor 1 is connected to the coal plow 2, the coal plow 2 is connected to the coal crusher 3, the coal crusher 3 is connected to the hopper scale 4, the discharge port of the hopper scale 5 is connected to the feeding belt conveyor 6, and the hopper scale 5 is connected to the Feeding belt conveyor 6 is all positioned at belt scale 7 tops, and described belt scale 7 is communicated with feed bin belt conveyor 8, and feed bin belt conveyor 8 is connected with feed bin 9. The belt conveyor 1 is used to transport coal, and the coal plow 2 unloads the coal on the belt conveyor 1, and imports it into the coal crusher 3, and after processing it into fine coal, it enters the hopper scale 4 for weighing, and the weighed The fine coal is transported by the feeding belt conveyor 6 and then weighed in the belt scale 7, and the data of the two is compared, and the belt scale 7 is checked. T...

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Abstract

The invention discloses a weighing check method for belt weighers, which comprises the following steps: the zero point check of a belt weigher or the calibration of a hopper weigher is carried out; abelt conveyer is switched on, and the coulter of a coal plough drops; after coal completely gets into the hopper weigher, the hopper weigher stops feeding and records the weight of the coal in the hopper weigher; the feed valve of the hopper weigher is opened, and a vibrating feeder is started; the weight of the coal on the belt weigher is recorded; the weight of the coal on the hopper weigher iscompared with the weight of the coal on the belt weigher, the relative error between both is recorded as delta, delta is equal to (M1-M2) / M1*100 percent, wherein M1 is the coal weight recorded by thehopper weigher, and M2 is the coal weight recorded by the belt weigher; if the relative error delta is less than or equal to plus or minus 0.5 percent, then the normal weighing activity of the belt weigher is resumed; and if the relative error Delta is greater than plus or minus 0.5 percent, then the interval value of the belt weigher is adjusted. The advantage of the technical solution is that the weighing check method can quickly switch production and check and can check the belt weigher at any time.

Description

technical field [0001] The invention relates to the field of electronic verification, in particular to a weighing verification method of a belt scale. Background technique [0002] The belt scale is an important measurement tool for the coal transportation terminal. The belt scale is a dynamic scale. It needs to be re-calibrated due to the change of the belt tension, the change of the shape and position error of the mechanical part, and the change of environmental factors during a period of operation. Its weighing accuracy not only depends on the quality of each part of the belt scale itself, but also is related to changes in external factors such as the working condition of the belt conveyor, the characteristics of coal, and environmental conditions. After a period of use, under the joint action of itself and external factors, the error will exceed the allowable range, so that it cannot meet the requirements of use, so the belt scale must be calibrated regularly. [0003] ...

Claims

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Application Information

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IPC IPC(8): G01G23/01
CPCG01G23/012
Inventor 张春光何楚峰欧阳兴东郭杜演常飞超黄开萍
Owner GUANGZHOU DEV GRP CO LTD
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