Calibration device and calibration method for cut tobacco mass flow belt weigher

Abstract

The invention discloses a cut tobacco mass flow belt weigher calibration device and method, and the device comprises a pipeline fastening ring, a flow balance valve, a complete machine support, a flexible connection pipe, a fixed hinge, a gradual expansion cavity, a horizontal air distribution plate, a free flow cavity, a Laval nozzle, a display control screen, a connection line, an actuator, and a lifting adjustment structure. The device comprises a pneumatic executing structure, a spraying component supporting rod, a lifting platform and a compressed air inlet connecting end. Through the calibration device for the tobacco shred mass flow belt weigher, the tobacco shred mass flow belt weigher in the tobacco shred making workshop of a cigarette enterprise can be checked frequently. The calibration method of the cut tobacco mass flow belt weigher fills the blank of simulating the calibration method of the cut tobacco mass flow belt weigher through a numerical method, and has the advantages that additional standard weights or material objects are not needed, the calibration convenience of the cut tobacco mass flow belt weigher is good, the calibration time is short, the manpower consumption is small, the result is reliable, and the interference of human factors of an operator is small.

Description

technical field [0001] The invention relates to the technical field of tobacco technological process detection, in particular to a calibrating device and a calibrating method of a tobacco mass flow belt scale. Background technique [0002] During the working process of the belt scale, various factors will cause the zero point and range of the belt scale to drift to varying degrees. For example: the conveyor belt sticks to the material, the tension change or deviation of the conveyor belt, the shortening or elongation of the conveyor belt caused by the temperature change, etc. In order to ensure the accuracy of the measurement of the belt scale, it needs to be calibrated regularly. [0003] For the special material of cut tobacco, according to the requirements of the State Tobacco Monopoly Administration on the cigarette process specification, the measurement and calibration methods of the electronic belt scale are divided into two types: one is the simulated load method, an...

AI Technical Summary

Problems solved by technology

At the same time, the placement process inevitably introduces errors caused by human factors. For example, when the standard weight is placed, the lifting action of the standard weight will affect the scale frame of the auxiliary belt scale and cause errors.

Therefore, the simulated load method requires a certain amount of manpower consumption, and some errors may also be introduced during the operation of on-site personnel.

However, the physical material feeding method is more cumbersome in the operation process. It is necessary to statically weigh the tobacco materials involved in the calibration, and the labor load is very heavy for handling and weighing.

However, during the feeding process, the physical properties of the shredded tobacco (cut tobacco structure, moisture content) will change, which is not conducive to the reuse of shredded tobacco.

In addition, the introduction of the measurement error of the static hopper scale of the weighing hopper also increases the calibration error of the material passing method

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