DRYING CYLINDER WITH ELECTRIC HEATING Russian patent published in 2001 - IPC

FIELD: device for heating the surface of a rotating cylinder, used for drying of a wet cloth of material (paper, fabric). SUBSTANCE: drying cylinder 1 is positioned on fixed hollow shaft 2 secured on frames 10. Covers 3,4 are attached to the ends of cylinder 1. Fixed on shaft 2 with the aid of spokes 7 in radius of the inner surface of cylinder 1 are frameworks accommodating the stator windings of motor 5 and sections of resistors 8. The windings of motor 5 and the sections of resistors 8 are connected to terminal box 9 by means of a cable passing through the hollow shaft. The advantage of the given system is the possibility of off-line control of the speed and heating of each cylinder separately without combining them in groups by the drive, which provides for observance of a high operating procedure of drying of a wet cloth of material. Besides, the entire heat released in the motor windings and resistor sections accomplishes a useful work in cylinder heating. The motor windings and resistor sections are placed in a sealed barrel of the cylinder so that they are protected against moisture and dust at drying of a wet cloth of material. EFFECT: enhanced efficiency of drying. 3 dwg