Material test-based constant belt weigher quantification accuracy detecting method and device

Abstract

The invention relates to a material test-based constant belt weigher quantification accuracy detecting method and device and belongs to the measurement technical field. According to the material test-based constant belt weigher quantification accuracy detecting method and device, a control weighing apparatus is arranged at the conveying tail end of a constant belt weigher to be measured; the weighing apparatus is used for carrying out accumulative weighing on a material conveyed by the constant belt weigher to be measured, wherein the constant belt weigher to be measured achieves a set flow rate; the actual instantaneous flow rate of the constant belt weigher to be measured is calculated according to the accumulative weighing load-bearing result of the control weighing apparatus; the actual instantaneous flow rate is compared with the set flow rate; and a comparison result is the quantification accuracy of the constant belt weigher to be measured. The control weighing apparatus hopper scale is designed according to an after-the-event load bearing principle; the control weighing apparatus hopper scale is located below the constant belt weigher to be measured; intermediate links between the control weighing apparatus hopper scale and the constant belt weigher to be measured are few, and therefore, leakage loss in a material transfer process can be decreased, and test precision can be improved. The detecting device of the invention has the advantages of simplicity, effectiveness, high reliability, simple and convenient detection process, easiness in calculation, and can quantitatively measure the accuracy of the constant belt weigher to be measured.

Description

technical field [0001] The invention relates to a quantitative accuracy detection method and device of a quantitative belt scale based on a material test, and belongs to the technical field of measurement. Background technique [0002] At present, electronic belt scales include metering belt scales and quantitative belt scales. The quantitative belt scale is a complete model that dynamically adjusts the conveying capacity of the passing bulk materials according to the expected value of the instantaneous load set in advance, and the set value is the target. Belt scales. The weight of the material is not consistent during the weighing process, and the conveyor belt is not a rigid body, so its dynamic measurement performance is inseparable from the performance of the conveyor and its belt. Now the recognized test method for the accuracy of the belt scale is the material test, and the material test is the belt. The material that the scale is expected to weigh is a test of the c...

AI Technical Summary

Problems solved by technology

[0003] The material test is to weigh the material on the belt scale again by a non-automatic static weighing instrument (control weighing instrument) with higher accuracy, so as to achieve the purpose of calibration by comparing the results of the belt scale and the control weighing instrument, as a non-automatic static weighing instrument for the control weighing instrument The scale can be installed separately (offline calibration method) or installed together with the belt scale (online calibration method). The offline method is more time-consuming and less reliable than the online method, but the online method requires a larger investment

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