METHOD OF HEATING A ROTATING DRYING THIN-WALL CYLINDER BY RADIATION FROM INSIDE, FOR EXAMPLE, FOR A SLASHING MACHINE

FIELD: pulp and paper industry.SUBSTANCE: invention relates to technology of cylinder (drum) drying of long-length thin-layer materials (TLM) used in textile industry; for paper and cardboard production; for curing conveyor, card and cord bands in rubber production, for heating and drying in production of film polymer (thermoplastic) materials. For example, artificial and synthetic leather. Materials which touch and (or) envelope heated rotating cylindrical surfaces of the drying cylinder during heating and/or drying. Method of heating a rotating drying thin-wall cylinder by radiation from inside, for example, for a slashing machine, in the metal thin-wall cylinder with two bottoms at the ends, directionally-focused radiation in a near infrared area of infrared reflector lamps is directed radially on the inner cylindrical surface of the cylinder, coated with heat-resistant absorbing black layer, arranging lamps inside the cylinder fixedly with the same gap relative to the cylindrical surface by three uniform rows in sliding pairs of straps, one of which is phasic and located further from the cylinder axis, and the other is neutral, located closer to this axis. Cylinder is made of duraluminium, a layer of aluminium oxide with thickness of 0.5 -0.75 mcm is made on its outer surface, phasic straps are made in the form of symmetrical axis of the reflector lamp of-shape in cross section of aluminium, surface of which, facing the cylinder inner surface, is being polished, edges of the reflector is placed closer to the irradiated surface, than to the lamp.EFFECT: invention simplifies the device of the drying cylinder, allows reducing power consumption for heating during drying and wear of surfaces rubbing during rotation of the cylinder.1 cl, 3 dwg Изобретение относится к технологии цилиндровой (барабанной) сушки длинномерных тонкослойных материалов (ДТМ) в производствах текстильной промышленности; бумаги и картона в бумажно-картонном производстве; для вулканизации транспортерных, кардных и кордных лент в резинотехническом производстве, для нагрева и сушки в процессах производства пленочных полимерных (термопластичных) материалов. Например, искусственных и синтетических кож. Тех материалов, которые в процессе нагрева и (или) сушки касаются и (или) охватывают нагретые вращающиеся цилиндрические поверхности сушильных цилиндров. В способе нагрева вращающегося тонкостенного сушильного цилиндра излучением изнутри, например, для шлихтовальной машины, в металлическом то