Heating device and heating method for glycerol in forming production of filter rod

Abstract

The invention relates to a heating device and method for glycerol in the forming production of a filter rod. The heating device comprises one or more glycerol heating tanks; all the glycerol heating tanks are sequentially communicated through an intermediate oil path; an oil outlet pipeline is arranged on the last glycerol heating tank; an atomizing spray nozzle is arranged at the tail end of the oil outlet pipeline; an oil outlet temperature detector and a heater are arranged in positions, close to the atomizing spray nozzle, on the oil outlet pipeline. According to the heating device and method, disclosed by the invention, the glycerol can be heated in a graded manner and the temperature of the glycerol can be stably controlled; thus the effects that atomized particles of the glycerol are uniform and the glycerol is uniformly applied are achieved; further, the hardness and pressure drop index of the filter rod are kept stable and the quality of the filter rod is greatly improved.

Description

technical field [0001] The invention relates to the field of tobacco processing, in particular to a heating device and a heating method for glycerin in filter rod molding production. Background technique [0002] At present, in the filter rod forming process of the tobacco industry, the application of glycerol triacetate (referred to as glycerin) is an important production link in the filter rod processing process, and is the key to obtain stable quality of the filter rod. The commonly used molding equipment in the domestic tobacco industry includes KDF2, KDF3, KDF4 molding equipment, etc. The commonly used glycerin application methods are brush rotary spin coating and nozzle atomization. Glycerin is applied to the tow after opening. Applied on the filament bundle, this method is mainly used on the KDF4 forming machine. The characteristic of this method is to use the nozzle to mix the air of a certain pressure and the glycerin of a certain temperature to produce completely a...

AI Technical Summary

Problems solved by technology

[0004] 1) During the production of filter rods, the ambient temperature of the workshop is generally controlled at (26±2)°C, and the temperature of glycerin in the glycerin box is also around 26°C at this time. The rheological properties of glycerin at this temperature are poor. After melting, the particles are relatively uneven, there is uneven spraying of glycerin, and it is difficult to control the amount of application, which may easily cause problems such as "karst caves" in the filter rod and dry sticks caused by improper application of glycerin, and the stability of hardness and pressure drop indicators is poor.

[0005] 2) The rheology of glycerin at room temperature is poor, resulting in blockage of the atomizing nozzle or unsmooth spraying, which seriously affects the uniformity and stability of glycerin application, and produces more waste filter rods, causing greater losses to the enterprise

Images