Controlled deflection roll with controlled temperature

Claim 2

A controlled deflection roll comprising in combination, a stationary shaft means adapted to be supported at its ends, a roll shell rotatably positioned surrounding the shaft means having an outer surface for engaging an external load on a working side of the shell and having a finished inner surface, bearing means between the shaft and each end of the roll shell locating the shell ends relative to the shaft, fluid support means between the shaft and the shell transmitting the force from said load on the working side of the shell to the shaft so that the shell is substantially uniformly supported along its length and having fluid in heat transmitting relationship with the internal surface of the roll shell, a heat exchanger means located within the roll shell connected to said supply means for controlling the temperature of said fluid so that the temperature of the outer surface of the roll shell is controlled, said heat exchanger being supplied with a heat exchange fluid for carrying away the heat from said heat transmitting fluid with the heat exchange fluid having a lower viscosity than said heat transmitting fluid, a first pumping means for said heat transmitting fluid, and a second pumping means for said heat exchange fluid with the second pumping means having higher capacity than said first pumping means for a higher flow of heat exchange fluid.

Claim 3

A controlled deflection roll comprising in combination, a stationary shaft means adapted to be supported at its ends, a roll shell rotatably positioned surrounding the shaft means with an outer surface for engaging an external load on a working side of the shell and with a finished inner surface, bearing means between the shaft and each end of the roll shell positively locating the shell ends relative to the shaft, fluid support means between the shaft and the shell transmitting the force from said external load on the shell to the shaft so that the shell is substantially uniformly supported along its length, said fluid support means including, a slipper bearing shoe means supportingly positioned along the length of the shell facing the inner surface of said roll shell, a piston and cylinder means mounted on the shaft means and supporting said shoe means about a pivotal axis parallel to the axis of the roll shell, means supplying support fluid under pressure to the piston and cylinder means so that the working load on the shell is transferred to the shaft, supply means for supplying a lubricating and heat transfer fluid to the inner surface of the roll shell for forming a lubricating film between the shoe means and iNner surface of the roll shell, a heat exchanger connected to said supply means for controlling the temperature of the heat transfer fluid so that the temperature of the outer surface of the roll shell is controlled, said heat exchanger being supported on the shaft within the shell, said heat exchanger including a heat exchange fluid supply means externally of the shaft with connecting lines leading along the shaft to said heat exchanger, a first pump for said supply means, a second pump for the heat exchange fluid to control the temperature of said heat transfer fluid, an open sump supported on the shaft positioned for collecting excess heat transfer fluid which does not pass between the shoe means and the inner surface of the shell, and means for maintaining a constant level of fluid in the sump, said first pump positioned to receive heat transfer fluid from said sump for pumping it to said heat exchanger.

Claim 4

A controlled deflection roll comprising in combination, a stationary shaft means adapted to be supported at its ends, a roll shell rotatably positioned surrounding the shaft means with an outer surface for engaging an external load on a working side of the shell and with a finished inner surface, bearing means between the shaft and each end of the roll shell positively locating the shell ends relative to the shaft, fluid support means between the shaft and the shell transmitting the force from said external load on the shell to the shaft so that the shell is substantially uniformly supported along its length, said fluid support means including, a slipper bearing shoe means supportingly positioned along the length of the shell facing the inner surface of said roll shell, a piston and cylinder means mounted on the shaft means and supporting said shoe means about a pivotal axis parallel to the axis of the roll shell, means supplying support fluid under pressure to the piston and cylinder means so that the working load on the shell is transferred to the shaft, supply means for supplying a lubricating and heat transfer fluid to the inner surface of the roll shell for forming a lubricating film between the shoe means and iNner surface of the roll shell, a heat exchanger connected to said supply means for controlling the temperature of the heat transfer fluid so that the temperature of the outer surface of the roll shell is controlled, said heat exchanger being supported on the shaft within the shell, said heat exchanger including a heat exchange fluid supply means externally of the shaft with connecting lines leading along the shaft to said heat exchanger, a first pump for said supply means, a second pump for the heat exchange fluid to control the temperature of said heat transfer fluid, an open sump supported on the shaft positioned for collecting excess heat transfer fluid which does not pass between the shoe means and the inner surface of the shell, and means for maintaining a constant level of fluid in the sump, said first pump positioned to receive heat transfer fluid from said sump for pumping it to said heat exchanger.

Claim 5

A controlled deflection roll comprising in combination, a stationary shaft means adapted to be supported at its ends, a roll shell rotatably positioned surrounding the shaft means having an outer surface for engaging an external load on a working side of the shell and having a finished inner surface, bearing means between the shaft and each end of the roll shell locating the shell ends relative to the shaft, fluid support means between the shaft and the shell transmitting the force from said load on the working side of the shell to the shaft so that the shell is substantially uniformly supported along its length and having fluid in heat transmitting relationship with the internal surface of the roll shell, supply means supplying said heat transmitting fluid to the inner surface of the roll shell, and a heat exchanger means located within the roll shell connected to said supply means for controlling the temperature of said fluid so that the temperature of the outer surface of the roll shell is controlled, said heat exchanger being supported on the shaft within said roll shell, said supply means including a hydraulic pump driven by a hydraulic motor and the discharge from the motor being delivered to the end bearings, said supply means transferring said heat transfer fluid to said bearing means with the fluid subsequently flowing to the inner surface of the roll shell.

Claim 6

A controlled deflection roll comprising in combination, a stationary shaft means adapted to be supported at its ends, a roll shell rotatably positioned surrounding the shaft means having an outer surface for engaging an external load on a working side of the shell and having a finished inner surface, bearing means between the shaft and each end of the roll shell locating the shell ends relative to the shaft, fluid support means between the shaft and the shell transmitting the force from said load on the working side of the shell to the shaft so that the shell is substantially uniformly supported along its length and having fluid in heat transmitting relationship with the internal surface of the roll shell, supply means supplying said heat transmitting fluid to the inner surface of the roll shell, and a heat exchanger means located within the roll shell connected to said supply means for controlling the temperature of said fluid so that the temperature of the outer surface of the roll shell is controlled, said heat exchanger being supported on the shaft within said roll shell, said supply means including a hydraulic pump driven by a hydraulic motor and the discharge from the motor being delivered to the end bearings, said supply means transferring said heat transfer fluid to said bearing means with the fluid subsequently flowing to the inner surface of the roll shell.

Claim 7

A controlled deflection roll comprising in combination, a stationary shaft means adapted to be supported at its ends, a roll shell rotatably positioned surrounding the shaft means having an outer surface for engaging an external load on a working side of the shell and having a finished inner surface, bearing means between the shaft and each end of the roll shell locating the shell ends relative to the shaft, fluid support means between the shaft and shell transmitting the force from said load on the working side of the shell to the shaft so that the shell is substantially uniformly supported along its length and having fluid in heat transmitting relationship with the internal surface of the roll shell, supply means supplying said heat transmitting fluid to the inner surface of the roll shell, and a heat exchanger means located within the roll shell connected to said supply means for controlling the temperature of said fluid so that the temperature of the outer surface of the roll shell is controlled, said heat exchanger being supplied with a heat exchange fluid for carrying away the heat from said heat transmitting fluid with the heat exchange fluid having a lower viscosity than said heat transmitting fluid, said heat exchange fluid having a higher specific heat than said heat transmitting fluid.

Claim 8

A controlled deflection roll comprising in combination, a stationary shaft means adapted to be supported at its ends, a roll shell rotatably positioned surrounding the shaft means having an outer surface for engaging an external load on a working side of the shell and having a finished inner surface, bearing means between the shaft and each end of the roll shell locating the shell ends relative to the shaft, fluid support means between the shaft and shell transmitting the force from said load on the working side of the shell to the shaft so that the shell is substantially uniformly supported along its length and having fluid in heat transmitting relationship with the internal surface of the roll shell, supply means supplying said heat transmitting fluid to the inner surface of the roll shell, and a heat exchanger means located within the roll shell connected to said supply means for controlling the temperature of said fluid so that the temperature of the outer surface of the roll shell is controlled, said heat exchanger being supplied with a heat exchange fluid for carrying away the heat from said heat transmitting fluid with the heat exchange fluid having a lower viscosity than said heat transmitting fluid, said heat exchange fluid having a higher specific heat than said heat transmitting fluid.