Environment-friendly efficient heat transfer drying drum

Abstract

The invention discloses an environment-friendly efficient heat transfer drying drum comprising a mandrel, an outer drum, an electrically conductive sliding ring and a plurality of heat transfer pipes.The outer drum comprises a drum section I and round seal plates I. The mandrel is arranged horizontally and penetrates through the round seal plates I at the two ends and is in seal connection with the round seal plates I fixedly, and a closed cavity is formed. The left end of the mandrel is sleeved with the electrically conductive sliding ring. The heat transfer pipes are parallel to the centeraxis of the mandrel and penetrate through the round seal plates I at the two ends and are in seal connection with the round seal plates I fixedly. Electric heaters are arranged in the heat transfer pipes and are electrically connected with the electrically conductive sliding ring. The outer walls of the heat transfer pipes are provided with spiral grooves. According to the further improvement, theouter wall of the drum section I is provided with a polyetheretherketone coating; the heat transfer pipes are evenly distributed on the circumference with the center axis of the mandrel as the centeraxis; a liner is arranged in the closed cavity; the round seal plates I are provided with temperature measurement installing pipes; and temperature measurement thermocouples are arranged in the temperature measurement installing pipes. The environment-friendly efficient heat transfer drying drum is resistant to adhesion and corrosion, high in thermal efficiency, significant in energy saving effect, friendly to environment, free of pollution and high in control precision.

Description

technical field [0001] The invention relates to a heating and drying equipment for textile printing and dyeing and non-woven industries, in particular to an electrically heated heat transfer drying cylinder. Background technique [0002] Drying cylinder is one of the important parts of printing and dyeing machinery. The heat medium commonly used in traditional drying cylinders is heat transfer oil or steam. During the rotation of the drying cylinder, the outer wall of the cylinder exchanges heat with the cloth to be dried in contact with it. The heat exchange is reliable. Has been widely used. However, there are still some problems in the practical process of traditional technology. First, steam drying needs to be equipped with a steam boiler, and oil heating and drying needs to be equipped with a thermal oil boiler. The exhaust gas generated during boiler heating is easy to pollute the atmospheric environment; The efficiency of the method is low, the heat loss is large, th...

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Problems solved by technology

However, there are still some problems in the practical process of traditional technology. First, steam drying needs to be equipped with a steam boiler, and oil heating and drying needs to be equipped with a thermal oil boiler. The exhaust gas generated during boiler heating is easy to pollute the atmospheric environment; The efficiency of the method is low, the heat loss is large, the energy consumption is large, the steam cannot be recycled, and the cost is relatively high

Chinese Patent Publication No. 105986385A discloses an environmentally friendly and efficient heat transfer dryer, which uses electric heating instead of steam heating and oil heating, has high thermal efficiency, no pollutants, and reduces input and use costs. However, from the perspective of energy saving, this The thermal efficiency of the electric heating dryer still needs to be further improved

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