Patent ID: 7222505
Filing Date: 2007-05-29
Classification: D06B

Abstract:
1. Dying or bleaching apparatus for yarn wound on reels or similar packages, with a reduced soaking ratio, comprising a treatment boiler ( 15 ) closed on a base and equipped with a removable closing cover ( 11 ), said boiler ( 15 ) being equipped with entry and/or exit pipings ( 18 , 19 ) for a treatment liquid connected to a circulation pump ( 100 ) and with a heat exchange group comprising two heat exchange chambers ( 16 , 17 ), in said boiler ( 15 ) with a vertical axis being arranged a plurality of support shafts ( 13 ) with a parallel axis, upon each of which reels of yarn or similar packages ( 12 ) are slotted one on top of the other, said boiler ( 15 ) being externally cylinder-shaped and having an annular section and said support shafts ( 13 ) being removable and being each arranged circumferentially in housings ( 29 , 25 ′) formed near to said cover ( 11 ) and to said base, respectively, in which the radial thickness of said annular section is slightly greater than the maximum diameter of each of said reels or similar packages ( 12 ), said cover ( 11 ) being equipped with an inner circular edge ( 44 ″) and with an outer circular edge ( 45 ′) which, in the closing operation, abut against an inner edge ( 44 ) and an outer edge ( 45 ), respectively, of the boiler ( 15 ) said two heat exchange chambers ( 16 , 17 ) consisting of two annular interspaces disposed outside of the annular body of said boiler ( 15 ) and forming an inner heat exchange chamber ( 16 ) with a circular crown-shaped section, which carries out the heat exchange with liquid through part of the inner cylindrical surface of the boiler ( 15 ), and an outer heat exchange chamber ( 17 ) with a circular crown-shaped section, which carries out the heat exchange with the liquid through part of the outer cylindrical surface of the boiler ( 15 ).