High-precision temperature control heating roller

Abstract

The invention provides a high-precision temperature control heating roller. The high-precision temperature control heating roller comprises a heating roller body, a roller surface, roller shoulders, aheat superconducting cylinder, a heat conducting oil cavity, a radiation heater and a heat radiation coating, wherein the radiation heater is located in the center of the roller body, the radiation heater is wrapped by the heat radiation coating, the heat superconducting cylinder is arranged on the outer layer of the heat radiation coating, the heat conducting oil cavity is formed between the heat superconducting cylinder and the heating roller body, and the surface of the heating roller body is provided with the roller surface. According to the high-precision temperature control heating roller, the dynamic radiation heater is adopted as a heat source, the temperature is rapidly homogenized through the heat superconductor cylinder, and then heat is transferred to the roller surface of theheating roller body through heat conduction of the low-specific-heat conduction oil, so that the purpose of improving the temperature uniformity of the roller surface is achieved.

Description

technical field [0001] The invention relates to the field of rollers, in particular to a high-precision temperature-controlled heating roller. Background technique [0002] In the processing of polymer materials, rolls are often used in many equipment, such as double-roll mills, multi-roll calenders, roll stretching machines, casting machines, compound machines, etc. Traditional roller heating methods include electric heating and oil heating. Electric heating mostly adopts a heating tube structure, and several heating tubes are evenly arranged in the inner cavity of the roller, and the temperature of the roller surface is controlled by means of the diffusion and transfer of heat generated by the heating tubes. This results in a larger circumferential temperature difference on the roll surface. Another widely used heating method is oil heating. The oil heating process is to set a relatively uniform heat conduction oil flow channel in the inner cavity of the roller. The stru...

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Problems solved by technology

However, this process also has discontinuity in the distribution of heat transfer oil channels, which leads to the existence of temperature differences on the roller surface.

There are also new technical solutions that use radiation heating to improve the discontinuous distribution of heat sources in the traditional electric heating and oil heating processes, but the heat transfer effect at both ends of the radiation tube will be significantly weakened in the radiation heating process, resulting in obvious temperature difference

The inhomogeneity of the surface temperature of the roller directly affects the stability of the processing of the polymer material product and the inhomogeneity of the isotropic properties, which affects the use of the product. Therefore, it is necessary to develop a high-precision temperature-controlled roller with a very uniform temperature on the roller surface.

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