Drying heat exchange system for water-based ink printing

Abstract

The invention relates to a drying heat exchange system for water-based ink printing, and aims at providing a drying heat exchange system which is good in heat exchange effect and large in heat transfer temperature difference and achieves circulating backheating. The drying heat exchange system comprises a drying air box and a heat exchanger. A medium wave ultraviolet lamp tube is mounted in the drying air box, and mounted on a lamp tube rotator. A glass jalousie is arranged on the front portion of the drying air box, the downstream portion of the heat exchanger is connected with a heat exchange pump, and the heat exchanger and the heat exchange pump are connected through a heat circulating pipe. Two heat exchange areas are arranged in the drying heat exchange system, microwave heating is compounded with heat exchange tube heating, ripples are arranged in a heat exchange tube, heat and mass transfer disturbance is enlarged, heat and mass transfer is benefited, the heat exchange efficiency is improved, and fluid is subjected to circulating heating many times in the heat exchanger. Impurities in air are effectively filtered out, medium wave ultraviolet irradiation is used in the air box, and the situation that the heating temperature of heating materials is too high during shutdown, and consequently the printing materials are baked off is avoided.

Description

technical field [0001] The invention relates to the technical field of ink drying and heat supply, in particular to a water-based ink printing drying heat exchange system. Background technique [0002] At present, in the semi-open air duct drying box of a general gravure printing machine, after the hot air blows through the printed product, it still carries a large amount of heat, but most drying systems only recover a small part of the exhaust gas, while the rest of the exhaust gas carrying most of the heat It is directly discharged into the environment, making the power consumption of the drying box huge. If the closed air duct drying box is used to completely recover the exhaust gas, the solvent concentration in the hot air will be greatly increased, which will inhibit the volatilization of the solvent in the ink layer of the printed matter, deteriorate the drying effect, and cause the risk of explosion. For the use of water-based ink gravure printing machines, the volat...

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Problems solved by technology

[0003] In addition, in the prior art, the gravure printing machine drying scheme based on the heat pump does not recover the sensible heat and latent heat in the air discharged from the air outlet of the drying box, resulting in heat emission and increased energy consumption

[0004] The general dry heat exchange system is similar to the traditional heat exchanger, the heat exchange efficiency is low, and the heat transfer is one-time. It is equipped with a circular heat transfer structure, resulting in most of the heat in the thermal fluid passing through the heat exchanger being lost as waste heat. ; The exported heat after heat exchange in the drying heat exchange system is not provided with a circulation heat recovery structure between the drying heat exchange system, resulting in poor heat transfer effect and low heat utilization rate of the general drying heat exchange system

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