Filter stick suction resistance on-line measuring device

Abstract

The invention relates to a filter stick suction resistance on-line measuring device which comprises a control system, an air channel system, a differential pressure transmitter, a vacuum flow sucker and a suction resistance measuring mechanism, wherein the suction resistance measuring mechanism is composed of a measuring head and an auxiliary cylinder; the measuring head is fixed in the falling position of the filter stick; the center of the measuring head and the falling center of the filter stick are positioned on one straight line; the measuring head is composed of a measuring seat and a measuring tube fixed in the measuring seat; the measuring seat is provided with a through hole which is connected with an air channel; the measuring tube is a hollow cylinder of which the inner wall is sheathed with a latex sleeve; the measuring tube is provided with a latex sleeve air inlet; the auxiliary cylinder is arranged below the measuring head and composed of two single-acting cylinders which are combined together; and an oscillating cylinder drives the whole auxiliary cylinder to rotate and reset. The invention has the advantages of reasonable design, simple operation, stable and reliable operation, high precision for measuring suction resistance differential pressure, and accurate measured data, and can realize real-time detection, analysis and control.

Description

technical field [0001] The invention relates to an online testing device for a filter stick, in particular to an online measuring device for the suction resistance of a filter stick. Background technique [0002] The detection of filter rod draw resistance is an important detection link in the production process of filter rods, which is directly related to the inner quality of cigarettes. The draw resistance of cigarettes and the pressure drop of filter rods will affect the taste of cigarettes, the amount of smoke released such as tar, and the difficulty of smoking cigarettes. At present, GBT / 18767-2002 "Standard Conditions and Measurement of Tobacco and Tobacco Products Cigarette Draw Resistance and Filter Rod Pressure Drop" (IS06565:1999, IDT) is usually used when measuring cigarette draw resistance and filter rod pressure drop. It is based on the standard suction resistance or pressure drop of the filter rod. [0003] At present, the quality control of cigarette filter ...

AI Technical Summary

Problems solved by technology

However, most of the current measuring heads are of an integral structure. During the measurement, the rotating cylinder drives the measuring head to rotate in place. After the filter rod is measured, it needs to rotate 180° during the falling process. The action stroke is long and the positioning accuracy is poor. In the measuring device After returning to the original position, the center of the measuring tube and the center of the drop of the filter rod are likely to deviate, resulting in easy bruises when the filter rod falls, which affects the accuracy of the measurement data

Moreover, the design of the mechanical structure of the measuring head is not perfect, and the sealing performance is not good, which not only affects the accuracy of the detection data, but also relatively troublesome for safety maintenance

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