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US 6,250,136 B1Granted
Molten glass viscosity and/or level meter
OwnerVirgilio dos Reis Cardoso Igrejainventor
Life of this patent
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OwnerVirgilio dos Reis Cardoso Igrejainventor
Estimating the term…
A device for the on-line measurement of viscosity and/or level of molten glass, converting the values of these variables into proportional electrical signals. The device comprises one sensor head connected to an electronic control unit and to a data processing unit. The sensor head comprises a fixed metallic core with external fins for air cooling, laid across by two vertical parallel shafts designed for torsional vibration to which are fixed, at the lower extremities, refractory rods partially coated with platinum and, at the upper extremities, the rotors of the two electrical motors which can produce torsional vibration of the vertical shafts. To each shaft are fixed two discs, connected mechanically to the fixed core by three fine rods disposed at 120° angles around the shaft. In operation, the sensor head is installed on a rigid structure fixed over the channel where the molten glass flows, with both rods partially immersed into the melt in order to be protected by the platinum coatings.
A device for the on-line measurement of viscosity of molten glass comprising a sensor head formed by a fixed metallic core with external fins for air cooling, laid across by two vertical parallel shafts designed for torsional vibration, to which are fixed, at the lower slotted ends, two refractory rods partially coated with platinum and, at the upper slotted ends, the rotors of two motors fixed to a base designed for the torsional vibration of the vertical shafts, the crossing of the core by each of the shafts being done by a torque tube in such a way that a mechanical sealing is formed between its lower end at which is fixed one refractory rod by a fast collar and the upper end at which is fixed by other fast collar the rotor of each motor, each shaft being mechanically connected to two metallic discs, one at the upper end the other at the lower end, each of these discs being mechanically connected to the core by three fine rods disposed 120° around that central shaft.
Dependencies are inferred from the claim text.