SU1222638A1 - Method of producing plates from glass - Google Patents

Description

The invention relates to industrial construction materials, 8 particularly to glass, and can be applied in the production of soluble sodium silicate, widely used in folk farms to produce so-called liquid glass, which is an aqueous solution of sodium silicate.

The purpose of the invention is to increase productivity.

The method of manufacturing plates of liquid glass is carried out by means of an apparatus comprising tray 1 for supplying glass mass 2 to molding, rolling shafts 3 and 4, tray 5 for collecting water, umbrella 6 for removing steam and a net conveyor 7 of final cooling, means 8 for feeding water from above to the bottom roll shaft, which is made with a cavity 9j filled with water 10. The shaft shell 11 is provided with holes 12 and 13 of different diameters for water to enter the section 14 formed by the blades 15 and 16 mounted on the shaft shell 4. Openings 12 and 13 different di meters are arranged such that each section with a diameter Malm openings is surrounded on all sides by sections with a larger diameter holes, since the openings in the sections arranged in a staggered order, are equal.

The glass mass flows down the inclined chute 1 in one or several streams and enters the gap between the rolling rolls 3 and 4, which convert it into a tape and simultaneously form pieces of silicate-lump forming the tape, corresponding to sections 14 of the lower roll.

Thus, in the first stage of forming, the lower shaft section captures the glass melt that flows into the section. The upper shaft 3 produces the final loading of the glass mass in section 14, compacted in them the glass mass. At the same time, due to the water coming from the cavity 9 of the shaft 4, a steam cushion is formed, which seeks to throw the glass mass out of the section and the shaft held in it. Z. Due to the different direction of these two effects, the glass mass is additionally compacted. In view of the fact that shafts 3 and 4 are installed with small

If the gap is between them, then between the parts of the glass melt enclosed in the sections of the lower shaft, clamps (not shown) are formed corresponding to the blades 15 and 16 of the shell 11 and interconnecting the glass melt in the sections. The destruction of these clips occurs due to the pressure gradient of the steam cushion in sections 14, created by the unequal supply of water to the sections through the holes 12 and 13 in the shell 11. Due to this, the pushing effect experienced by the glass mass from the steam cushion will be different in each section that It predetermines a different consolidation of the glass melt in the adjacent sections, i.e. their shift relative to each other and the collapse of the clamp, as the most thinned sections of the tape, and having as a result of this small strength.

The process described is aggravated by the different degrees of cooling of the adjacent sections, which also contributes to the separation of the pieces from one another.

Thus, in the zone of impact on the glass melt of the upper shaft, the processes of forming and cooling the ribbon of glass almost end. It is completely obvious that due to the technical perfection of the proposed technology, the processes of forming and cooling the plates in this case are carried out simultaneously. Cooling the glass melt with water-cooled rolling shafts at the top and bottom and additional cooling of its steam cushion promotes rapid formation on the tiles, i.e. pieces of silicate lumps, superficial crust of hardened (hardened material, the thickness of which depends on the speed of rolling, the amount of water supplied to vaporization, the size of sections, etc. Because of the possibility of self-heating of the pieces after they are separated from one another, it is advisable to cool them through 8, the action of water from above. After this operative, the plates are unloaded from the shaft section under the action of their weight and fed to the conveyor 7 of the final cooling.

Removal of the vapor formed during the molding process is performed by means of a hood 6.

31

Dp increase the efficiency of the processes of forming and cooling over the lower rolling shaft can be installed several upper water-cooled rollers smaller than that of the lower, diameter.

Can be used in the invention instead of air or gas. In this case, the lower shaft is made water-cooled. and equipped with means for supplying cold air to the section at different pressures.

However, the most effective is the option of supplying water to the sections of the lower shaft as a source of a formaculate, carrier and cooling cushion tile.

226384

The use of the invention in the glass industry makes it possible to significantly increase the productivity of plants for the production of plates of 5 soluble sodium silicate. The increase in productivity is provided primarily by increasing the intensity of the processes of forming and cooling the silicate tile.

The proposed technology for the manufacture of plates of liquid glass eliminates the possibility of sticking during the molding of glass to the molds or sections, which guarantees their high reliability.

Claims (1)

METHOD FOR PRODUCING PLATES FROM GLASS by supplying glass melt with one or several streams for molding, rolling glass melt into a strip with its simultaneous separation into plates, separating plates from each other and unloading them, characterized in that, in order to increase productivity, the plates are molded on steam pillow, and their separation from each other ** is produced by creating a vapor pressure gradient on adjacent plates.