MACHINE FOR MAKING BLANKS OF LIGHT GUIDES Russian patent published in 1995 - IPC

FIELD: equipment for glass treatment. SUBSTANCE: machine has reactor with sucking-out branch and burners for producing porous blank, furnace for vitrification porous blank into transparent one, unit for automatic preparing vapor-gas mixtures, gas units and mechanism for rotating and moving blanks. Machine is provided with system for automatic sustaining absolute pressure in the reactor. The machine is made in form of differential manometer, inside which pressure converter is built. Membrane drive of the machine has rod, onto which shutter is mounted. The shutter cam move in suck-in branch pipe of the reactor. System for automatic keeping absolute pressure in the reactor has reference pressure set-point device, which is made in form of pressure-tight siphon, which is connected with unit for adjusting reference pressure. One measuring cavity of differential manometer communicates with the reactor, and the other one with reference pressure set-point device. Pressure converter is connected with membrane drive. Machine may be provided with thermostat, inside which the reference pressure set-point device is mounted. EFFECT: improved quality of production. 2 cl, 11 dwg