RU173711U1 - BURBOTER FOR BURNING OF GLASS MASS - Google Patents

Abstract

The utility model relates to the field of glass melting and is used in the cooking of optical laser phosphate glasses at the stage of clarification of glass. The bubbler for drilling glass contains a tube for supplying compressed gas, passing into a hollow cylindrical disk with holes on the upper and lower surfaces. Several branches with hollow disks at their ends and with holes on the upper and lower surfaces of the disks extend obliquely downward from the tube, with the disks aligned with the tube. The number and area of holes on the upper surface of the disks is greater than the number and area of holes on the lower surface of the disks. Disks made at different levels are located in the annular space around the central disk and do not overlap each other. The bubbler is made of dispersively hardened platinum inside and of platinum with a purity of 99.9% - outside. The technical result is an increase in the efficiency of bubbling: accelerating the homogenization and dehydration of glass melt, the possibility of multiple use of the bubbler.

Description

The utility model relates to the field of glass melting and is used for cooking optical laser phosphate glasses at the stage of clarification of glass.

A device for the homogenization of glass according to ed. testimonial. SU 715509, publ. 02/15/1980, IPC С03В 5/18, containing a vessel with an agitator in the form of a hollow shaft with blades and nozzles in the lower part, a heating system and a source of compressed gas. The device is equipped with a pneumatic pulsator connected by a pipe to a hollow shaft and a source of compressed gas. Due to the limited number of nozzles for the release of compressed gas, bubbling will be ineffective and the bubbler will not fulfill the task.

The prior art design of a bubbler with simultaneous mixing of the molten glass melt according to Japanese patent No. JP S6121922, publ. 01/30/1986, IPC С03В 5/18, С03В 5/187, С03В 5/193. The bubbler is a tube with a helical blade and a hollow cylindrical disk at its end. Around the perimeter and on the back surface of the hollow disk are openings for the passage of gas. The manufacture of a bubbler of the claimed design is possible from a thermally stable metal, for example platinum or alloys based on it. Glass melt drilling will be quite intense, however, the need to rotate the bubbler while supplying compressed gas to it will complicate the design of the bubbler.

The closest technical solution to the proposed utility model is a sparging device for dewatering glass according to patent RU 2596836 C1, publ. 09/10/2016, IPC С03В 5/193, used in the cooking of laser glasses activated by rare-earth ions and demonstrating luminescence in the infrared region of the spectrum. This bubbler contains a tube passing into a hollow body made in the form of a truncated cone. The smaller base of the cone is facing the tube, and the larger base is made in the form of an annular platform, turning into a tapering part of the base with a bottom, with holes made around the entire perimeter of the annular platform. The number and size of holes on the annular platform are made in accordance with the specific use of the composition and volume of the molten glass. The bubbler is made of siliceous ceramics based on glassy silicon dioxide. The bubbler has a limited number of openings for the exit of compressed gas concentrated in a limited annular space, so it is not efficient enough. In addition, it is made of an unstable, almost one-time use of ceramic material, which, in turn, with strong corrosion can produce ceramic inclusions in the molten glass. Also, the location of the holes on the annular platform, during drilling, creates jet streams in the molten glass, which leads to the emergence of forces biasing the bubbler to one side of the crucible, therefore, the uniformity of the molten glass drilling in the crucible volume is violated. For these reasons, the bubbler will not complete the task.

The objective of the utility model is to increase the efficiency of bubbling: accelerating the homogenization and dehydration of glass melt, the possibility of reuse of the bubbler.

The technical result due to the task is achieved by the fact that in the bubbler for glass melt drilling, containing a tube for supplying compressed gas, passing into a hollow body with openings for the exit of compressed gas, in contrast to the known, the hollow body is made in the form of a cylindrical disk with holes on the upper and lower surfaces, several branches with hollow disks at their ends and with holes on the upper and lower surfaces of the disks extend obliquely downward from the pipe, the disks being aligned with the tube.

Due to the multiple increase in the number of openings for the exit of compressed gas (for example, oxygen) and the arrangement of hollow disks with these openings at several, for example, three levels and throughout the annular space around the gas supply tube, the intensity of glass melting increases significantly and its homogenization, clarification and dehydration are accelerated .

The utility model is illustrated by drawings, where:

Figure 1 - General view;

Figure 2 is a top view.

The glass bubbler (Fig. 1, 2) contains a tube 1 for supplying compressed gas, passing into the hollow body in the form of a cylindrical disk 2 with holes 3 on the upper and lower surfaces for the exit of compressed gas. Several branches 4 with hollow disks 5 at their ends and with holes 3 on the upper and lower surfaces of disks 5 extend obliquely downward from the tube, with the disks 5 being aligned with the tube 1. The hollow disks 5 are located at different levels. The number and area of holes 3 on the upper surface is greater than the number and area of holes 3 on the lower surface of the disks (at least 450 holes with a diameter of 0.5 mm on the upper and no more than 10 holes with a diameter of 0.5 mm on the lower surfaces of the disks). In this case, the disks 5 on the branches 4 are located in the annular space around the central disk 2 and do not overlap each other. At each level, three disks 5 are made at an angle of 120 ° to each other and with a level shift of 60 °. To increase the mechanical strength of the bubbler, it is made of dispersively hardened platinum inside and from platinum with a purity of 99.9% - outside.

The device operates similarly to the prototype. Namely: the bubbler is suspended above a crucible with molten glass. A hose for supplying compressed gas is connected to the bubbler. The bubbler is gradually lowered into the molten glass to the operating position with the help of a regulatory body, the compressed gas (in particular, oxygen) is fed into the bubbler with a certain flow rate, while compressed gas begins to escape through the openings on the surfaces of the hollow disks, forming gas bubbles in the molten glass.

The process of bubbling glass continues for several hours. At the same time, the process of mixing (homogenization) and dehydration of the glass melt occurs simultaneously. At the end of the bubbling process, the bubbler is removed from the glass melt upward.

The bubbler of the proposed design is more effective than bubbling through a conventional tube and is industrially applicable. The time of homogenization and clarification of glass is reduced from 13-15 hours to 8-10 hours.

Claims (5)

1. A bubbler for glass-melt drilling, containing a tube for supplying compressed gas, passing into a hollow body with openings for the exit of compressed gas, characterized in that the hollow body is made in the form of a cylindrical disk with holes on the upper and lower surfaces, slightly sloping downwardly from the tube branches with hollow disks at their ends and with holes on the upper and lower surfaces of the disks, the disks being aligned with the tube. 2. A bubbler for drilling glass melt according to claim 1, characterized in that the number and area of holes on the upper surface is greater than the number and area of holes on the lower surface of the disks. 3. A bubbler for drilling glass melt according to claim 1, characterized in that the hollow disks are located at different levels. 4. A bubbler for glass melt drilling according to claim 1, characterized in that the disks on the branches are located in the annular space around the central disk and do not overlap each other. 5. A bubbler for glass melt drilling according to claim 1, characterized in that it is made of dispersively hardened platinum inside and of platinum with a purity of 99.9% - outside.

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