Online tobacco shred blending proportion nondestructive testing device and method based on laser technology

Abstract

The embodiment of the invention provides an on-line tobacco shred proportion blending nondestructive testing device and method based on the laser technology, and the method comprises the steps: detecting the space of a belt conveyor and the sectional area of a material through a laser radar, and determining the proportion of the tobacco shred according to the linear speed of a conveying belt of the belt conveyor detected by a speed measuring device; respectively calculating the volume flow before and after tobacco shred blending; the mass of the blending material and the instantaneous mass flow of each blending component are detected through an electronic belt scale, and the bulk density and the instantaneous blending proportion of the tobacco shreds before and after blending are calculated by combining the volume flow before and after blending of the tobacco shreds; and according to the instantaneous blending proportion, analyzing and calculating a proportion variable coefficient and a blending precision value in the blending process, and adjusting the blending process according to a calculation result. According to the method, the instantaneous blending precision of the blended tobacco particle material is detected, and the process quality control level in the tobacco blending process is improved.

Description

technical field [0001] This document relates to the technical field of tobacco processing equipment, in particular to a non-destructive testing device and method for online cut tobacco blending ratio based on laser technology. Background technique [0002] In the shredding production process of cigarette industrial enterprises, the smallest particle unit after the tobacco material is processed is the filamentary raw material. , recycled shredded tobacco (the last four are blending materials), etc. are proportioned and blended according to the product design requirements of the enterprise. According to the technical specification and quality requirements, the proportioning precision of the blending of cut tobacco is not more than 1.0%, so that the proportion of cut tobacco after mixing is accurate and uniform. According to the different production organization methods, there are two main processing methods: proportional blending or total blending. Among them, the process pri...

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Problems solved by technology

[0003] Under the trend that the quality requirements of the silk making process are becoming more and more refined, precise, and precise, electronic belt scales are only used as the only component measurement monitoring and control equipment in the shredded tobacco blending process, which is increasingly unable to adapt to the new process control requirements.

From the perspective of equipment use function: the measurement accuracy of electronic belt scales is easily affected by factors such as uneven distribution and discontinuity of real materials, and it is necessary to regularly check the rotation of the weighing idler. The electronic belt scale needs to consume a large amount of shredded tobacco during the actual calibration process, resulting The consumption of cigarette processing raw materials increases; from the perspective of process quality control: when the quantitative output volume of the blended materials is small and the blending ratio is low (less than 10%), it is easy to cause blockage, and the low belt speed of the electronic belt scale will cause blending. The continuity is poor, the continuity of the material output is poor, the distribution is uneven, the mixing degree of the tobacco material particles is low, and the mixing uniformity of the shredded tobacco after blending is not up to the standard; when the quantitative output volume of the blended material is large, the blending ratio is high (higher than 30%), it is easy to cause blockage at the blanking place, resulting in material interruption during shutdown and discontinuous distribution of blended materials, so that the leaf shreds in part of the flow range are not blended with other granular materials, and even to dredge the blockage problem. The start-stop equipment makes the instantaneous blending progress too large

In addition, other blended granular materials are required to have a fluffy structure and light weight. Discontinuous material flow conditions such as intermittent and piled up during blanking will affect the process quality indicators such as blending accuracy, blending uniformity, and tobacco filling value. , as well as the subsequent processing of flavoring, mixing, storage, and transportation.

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