Sampling test method and sampling device for the whole cut rate and broken cut rate of cut tobacco after wind conveying

Abstract

The invention provides sampling test methods for the whole cut rate and the broken cut rate of cut tobacco obtained after air conveying and a sampling device and relates to the technical field of sampling test of the whole cut rate and the broken cut rate of the cut tobacco. The sampling device for testing the whole cut rate and the broken cut rate of the cut tobacco obtained after air conveying comprises a cigarette making machine cut tobacco sampling device and an air return pipe tobacco powder metering device. The cigarette making machine cut tobacco sampling device comprises an opaque shielding part inserted into a cigarette making machine material bin to shield a high-material photoelectric switch, and a sampling bag used for stretching into the cigarette making machine material bin to collect the cut tobacco. The air return pipe tobacco powder metering device comprises a controller, a powder concentration meter and an air speed flow meter, wherein the powder concentration meter and the air speed flow meter are installed on an air return pipeline. The sampling test method for the whole cut rate of the cut tobacco obtained after air conveying and the sampling test method for the broken cut rate of the cut tobacco obtained after air conveying are both achieved based on the sampling device, the sampling test methods for the whole cut rate and the broken cut rate of the cut tobacco obtained after air conveying both include the steps of cut tobacco sampling, air return pipe tobacco powder metering data reading and recording, and calculating of the whole cut rate of the cut tobacco obtained after air conveying.

Description

technical field [0001] The invention relates to the technical field of sampling and testing the whole cut rate and broken cut rate of shredded tobacco, in particular to a sampling and testing method and a sampling device for the straight cut and broken cut ratio of cut tobacco after being fed by wind. Background technique [0002] At present, most of the cigarette making machines in domestic cigarette factories adopt wind power wire feeding system, which generally includes cigarette making machine, wire feeding machine, wire feeding pipe, dust removal pipe, wind balance equipment, fan, dust removal equipment, etc. The wind wire feeding system adopts the negative pressure dilute phase suction method. The design wind speed of the cut tobacco conveying pipeline is 18m / s. Due to the air leakage at the pipe connection, the suction hopper of the cigarette machine and the fluctuation of the system air volume, the actual wind speed can generally be controlled at 14- 22m / s range. Wi...

AI Technical Summary

Problems solved by technology

Tobacco whole rate and shredded cut rate test after air-feeding usually takes samples from the shredded tobacco in the suction hopper. However, at present, the industry ignores the inside of the suction hopper when testing the whole and shredded tobacco rate after wind-feeding. The problem of incomplete sampling of shredded tobacco. The main reasons for the incomplete sampling of shredded tobacco in the suction hopper are: 1) There is no professional tool for sampling the cut tobacco in the suction hopper. In fact, the problem of under-taking or missing sampling is common; 2) Leakage in the return air duct The running smoke is not considered; due to incomplete sampling, it will inevitably lead to certain deviations in the final test results

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