Drying and degassing unit for printing machines

Abstract

The invention provides a drying and degassing unit for printing machines. The unit includes a paper conveying roller and a heating tube, the paper conveying roller is composed of a roller body and two roller shafts installed on the both ends of the roller body respectively, and the roller body and the roller shafts all penetrate along an axis, wherein the two roller shafts are internally and fixedly provided with a third bearing and a fourth bearing respectively; the heating tube comprises a tube body and conducting rods installed on the both ends of the tube body respectively, the tube body is located inside the roller body, and the two conducting rods penetrate through the roller shafts and are fixed by the third bearing or the fourth bearing respectively; a rack is further provided with a degassing box positioned above the paper conveying roller, and the upper wall of the degassing box is provided with a gas introducing pipe, and the degassing box is communicated with an aspirator pump through the gas introducing pipe; a drying device is ingeniously installed inside the paper conveying roller, and constant-temperature heating supply is utilized to make the heat be evenly distributed, so that electric consumption can be reduced, drying processes of printing ink is more stable, and fast volatilization of organic components in the printing ink due to high temperature is reduced; additionally, waste gas produced during the drying processes is absorbed, filtered and then exhausted to the exterior to reduce pollution and protect environment.

Description

technical field [0001] The invention relates to the field of printing machines, in particular to a drying and degassing unit for printing machines. Background technique [0002] Printing presses have been developing very fast since their inception, and have their own printing equipment in different fields. At present, most printing machines use ink to print patterns. On paper printed matter, due to the weak absorption of printed matter, if the printed ink pattern is not dried in time, it is easy to paste after touching it, causing unnecessary losses. And affect the work quality and efficiency; [0003] Most of the existing drying devices use direct high-temperature drying for the ink drying part, and it is always maintained in a high-temperature exothermic state, which consumes a lot of power, and it is easy to cause rapid and large-scale volatilization of organic components in the ink under high temperature conditions. Form waste gas, which is discharged into the atmosphe...

AI Technical Summary

Problems solved by technology

At present, most printing machines use ink to print patterns. On paper printed matter, due to the weak absorption of printed matter, if the printed ink pattern is not dried in time, it is easy to paste after touching it, causing unnecessary losses. And affect the quality and efficiency of work;

[0003] Most of the existing drying devices use direct high-temperature drying for the ink drying part, and it is always maintained in a high-temperature exothermic state, which consumes a lot of power, and it is easy to cause rapid and large-scale volatilization of organic components in the ink under high temperature conditions. Exhaust gas is formed and discharged into the atmosphere to pollute the environment

Images