Continuous measuring electronic belt scale

Abstract

The invention relates to a continuous measuring electronic belt scale which comprises a belt conveyer, a weight measuring sensor, a filling funnel, a feeding device, a feeding speed control unit and a control instrument, wherein the belt conveyer consists of a rack, a speed reducer, a material scraping plate, a driving roller, a conveying belt, a support roller, a belt blocking wheel and a driven roller, the belt conveyer is arranged on the weight measuring sensor wholly, materials to be weighed is fed by the feeding device and are sent to the conveying belt by the filling funnel, the control instrument collects signals input by the weight measuring sensor, the input signals are estimated by a central processing unit and a control program, estimating results are fed back to the feeding speed control unit to change feeding speed of the feeding device so as to realize stable flow of materials on the belt conveyer and meet requirements on continuous measuring and burdening, and the control instrument can be connected with an upper computer, and integrally controls a plurality of continuous measuring electronic belt scales to form a complete burdening system. In the continuous measuring electronic belt scale, a system model is easy, the measuring accuracy is high, the structure is simple and compact so that the scale is convenient to expand, the generality of components and parts is strong so that the scale is convenient to maintain, and the reliability of devices is high so that the scale can be suitable for special environments with a large amount of dust, high humidity and corrosion of weak acid and weak base.

Description

1. Technical field [0001] The invention relates to an electronic belt scale for continuous measurement. 2. Background technology [0002] As a representative of continuous metering electronic belt scales, suspension electronic belt scales, lever electronic belt scales and nuclear belt scales have been widely used in various industries at home and abroad, basically representing the current state of this technology. [0003] A method and equipment are provided in ZL98801869.1. There is a weighing unit behind the feeding funnel of the conveyor belt to measure the empty belt load of the return journey, and there is a weighing unit before the feeding funnel along the running direction of the conveyor belt to measure The load of the belt after the material is loaded, and it also has a device to measure the speed V of the conveyor belt. Based on this principle, the equipment has the functions of zero point correction and continuous weighing. [0004] This method is essentially an ...

AI Technical Summary

Problems solved by technology

Although the cross-sectional shape of the measured material is a regular rectangle or trapezoid to reduce the measurement deviation caused by the cross-sectional shape, the physical and chemical properties of some materials are not always the same in the actual use process, such as when the moisture in the material changes, When the particle size increases and the dust in the air changes, the cumulative factor B will deviate from the value obtained by the original calibration, which will have a greater impact on the measurement accuracy

[0007] The common disadvantage of the above two continuous metering electronic belt scales is that the weight of the material is not measured by directly loading it on the load cell

There is an indirect relationship between the actual weight of the material and the measured value of the sensor, and the measurement error caused by the interference in the transmission process cannot be avoided by the system itself.

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