Tobacco shred real-time monitoring method and device based on elbow dilute phase conveying high-speed imaging

Abstract

The invention relates to a tobacco shred real-time monitoring method and device based on elbow dilute phase conveying high-speed imaging. The method is realized through the following steps of connecting a transparent elbow with an elliptical cross section to a branch line of a tobacco shred conveying main pipeline, and connecting a vacuum dustproof fan into the other end of the transparent elbow, so that tobacco shreds reach a fluidization speed in the elbow for dilute-phase conveying, and wall-attached movement is generated under the action of centrifugal force; and arranging a high-speed imaging system at the outer side of the elbow to be used for obtaining a tobacco shred image attached to the wall of the transparent elbow, and obtaining tobacco shred size distribution and tobacco shred speed distribution finally after image processing. The device comprises an image acquisition system, a high-speed camera system, an image processing system, a tobacco shred recovery system and a PLC control system. The tobacco shred real-time monitoring method and device have the advantages that the tobacco shred real-time monitoring device is suitable for tobacco industry application scenes and can be connected into an actual pneumatic conveying pipeline in a conventional connection manner; and the tobacco shreds can be rapidly subjected to image acquisition, size and speed calculation and statistical analysis, and good real-time performance is achieved.

Description

technical field [0001] The invention belongs to the field of tobacco processing, in particular to a method and device for real-time monitoring of the size and speed of shredded tobacco based on high-speed imaging of dilute-phase pneumatic conveying in bent pipes. Background technique [0002] The shredded tobacco structure refers to the mass percentage of shredded tobacco in sections of different lengths to the total shredded tobacco. Different shredded tobacco sizes have obvious effects on the amount of shredded shredded tobacco at the end of the cigarette. The size difference of shredded tobacco not only affects the physical quality and smoking quality of the product, but also may affect the coiling process. Tobacco industry standard YC / T289-2009 stipulates a method for determining the structure of cut tobacco. This method uses 6 different sizes of screens and plane rotating eccentric detection sieve technology to obtain the mass proportion fraction of cut tobacco of diff...

AI Technical Summary

Problems solved by technology

Chinese patent CN106370546A provides a method and sampling device for sampling and testing the whole and broken tobacco ratio, which solves the problem of incomplete sampling during the detection of whole and broken tobacco, and makes the test results more accurate

However, the above method also has defects. Due to the need for manual sampling, it cannot be used for real-time monitoring of the continuous production process of shredded tobacco, and the efficiency is low.

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