Heated controlled deflection roll
AssigneeEscher Wyss Limited
InventorsAlfred Christ, Rolf Lehmann
Life of this patent
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Abstract
A controlled deflection roll is disclosed comprising a stationary support and a rotatable hydraulically supported roll shell. There is also provided heating of the hydraulic liquid which is infed to the controlled deflection roll by a pump device. The pressure line of the pump device is connected by means of a heat exchanger with a return flow line. Connected after the heat exchanger is a cooling device having a temperature regulator. In the pressure line there is arranged following the heat exchanger a heating device. The return flow line is connected by means of an overflow valve with a container for hydraulic medium which is fed to a heating device for the controlled deflection roll.
Claims10
A heated controlled deflection roll comprising:
- a stationary support;
- a rotatable roll shell;
- means for mounting said rotatable roll shell to be rotatable about said stationary support;
- at least one pressure element for supporting the roll shell;
- a pump device;
- pressure line means for connecting the pump device with the pressure element for the infeed of a hydraulic pressurized fluid medium to the pressure element for supporting the roll shell;
- return flow line means for the fluid medium connected between the controlled deflection roll and said pump device;
- heat exchanger means for operatively connecting said return flow line means with said pressure line means and for transmitting heat from the return flow line means to the pressure line means;
- and
- cooler means arranged in the return flow line means after the heat exchanger means.
Dependencies are inferred from the claim text.