KR200285893Y1 - Glass furnace - Google Patents

Abstract

The present invention relates to a glass melting furnace having a melter that heats a solid glass raw material to form a liquid molten glass, wherein the bottom surface of the melter is formed from a corner region where both side surfaces of the melter and the bottom surface are in contact with each other. It characterized in that the inclined surface is inclined downward to the center region of the bottom surface along the traveling direction of the. Thereby, it can prevent that the heterogeneous glass contained in the bottom layer of a melter is provided to the shaping | molding apparatus which is a post process.

Description

Glass Melting Furnace {GLASS FURNACE}

The present invention relates to a glass melting furnace, and more particularly, to a glass melting furnace having an improved structure of a bottom surface of a melter.

The glass melting furnace has a melter for melting a solid glass raw material, a refiner for clarifying the molten glass in the melter, and a glass supply unit for supplying the molten glass to a molding apparatus.

The melter has a duct shape consisting of a top wall, a bottom wall and a side wall to form a receiving space for the molten glass melted by the burner. The upper wall, the bottom wall and the side wall are each formed of a firebrick having excellent thermal conductivity. Among these, the upper wall is arcuate for temperature management in the melter.

Such a melter forms a molten glass of a liquid by heating a solid glass raw material and provides it to a molding apparatus through a glass supply unit, so that a glass product can be mass produced by the molding apparatus.

However, in such a conventional glass melting furnace, there is a problem in that the heterogeneous glass generated in the upper wall and the sidewall structure of the melter and contained in the molten glass is relatively easily supplied to the molding apparatus, thereby degrading the quality of the glass product to be molded.

That is, a typical melter upper wall is formed of a refractory brick incorporating silica. The molten glass in the melter maintains a relatively high temperature, and as time passes, the upper wall of the melter naturally erodes and flows down to the refractory brick of the side wall. Erosion reaction will generate foreign substances. Such foreign matter sinks to the bottom layer of the molten glass due to its high density and viscosity, and forms foreign glass.

However, there is no conventional means for preventing the flow of the heterogeneous glass contained in the bottom layer of the molten glass, so that the problem of deteriorating the quality of the glass product is that the heterogeneous glass is easily supplied to the molding apparatus through the glass supply unit. have.

Accordingly, it is an object of the present invention to provide a glass melting furnace that can prevent foreign glass contained in the bottom layer of a melter from being provided to a molding apparatus which is a post-process.

Another object of the present invention is to provide a glass melting furnace that can improve the quality of the glass product produced by preventing the dissimilar glass contained in the bottom layer of the melter to be provided to the molding apparatus, which is a post-process. .

1 is a schematic plan view of a glass melting furnace according to a first embodiment of the present invention,

FIG. 2 is a schematic cross-sectional view of the melter shown in FIG. 1;

3 is a cross-sectional view taken along line III-III of FIG. 2;

4 is a schematic longitudinal cross-sectional view of a melter according to a second embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

12: refiner 14: glass supply unit

18: forming apparatus 20: burner

30 melter 33 bottom wall

33a, 33b: slope 34: depression

36: drain hole 38: cover block

40: Actuator

The object is, according to the present invention, in the glass melting furnace having a melter for heating the solid glass raw material to form a liquid molten glass, the bottom surface of the melter in the corner region where both sides and the bottom surface of the melter contact each other It is achieved by the glass melting furnace, characterized in that the inclined surface inclined downward from each other to the central region of the bottom surface from the direction of the molten glass from.

Here, it is more preferable for the recessed portion recessed from the bottom surface to be formed in at least a portion of the central region of the bottom surface where the inclined surfaces abut each other to prevent the flow of heterogeneous glass.

If further through the bottom wall of the melter to provide a drain hole exposed to the outside to communicate with the depression can provide an additional effect of discharging the foreign glass to the outside.

The cover block may further include a cover block for opening and closing the opening of the drain hole, and a cover block driver for driving the cover block and a control unit for activating and deactivating the cover block driver by a predetermined condition may be further provided. .

Hereinafter, with reference to the accompanying drawings will be described in detail for each embodiment of the present invention and the same reference numerals are assigned to the same configuration.

For example, a glass melting furnace for molding a glass product, such as a cathode ray tube, as shown in Figure 1, a melter 30 to form a liquid molten glass by receiving and heating a solid glass raw material, and impurities in the molten glass Bottleneck for homogenizing the molten glass by interfacing between the refiner 12 and the melter 30 and the refiner 12 to clarify or remove the molten glass by cooling the molten glass in the melter 30 to a predetermined temperature. A glass supply unit 14 which is disposed in communication with the connecting portion 10 and the refiner 12 to heat, cool, and stir the molten glass to a glass state suitable for molding operation conditions is provided to the glass product forming apparatus 18. Have

The glass supply unit 14 is combined with the refiner 12 to form a flow path of the clarified molten glass, and a certain amount of molten glass (referred to as a glass gob) coupled to an end of the feeder 16. It has a bowl 17 for providing to the molding apparatus 18.

A plurality of heating ports 19 are formed at both sides of the melter 30 at intervals along the longitudinal direction of the melter 30. Each heating port 19 is provided with a burner 20 for heating the solid glass raw material introduced into the melter 30 through the raw material supply unit 15. When the burner 20 is ignited at both sides of the melter 30, a pair of heat storage chambers 22 are provided to supply combustion air to the burner 20 or to discharge waste gas generated in the melter 30 to the outside. It is prepared.

As shown in FIGS. 2 and 3, the melter 30 includes an upper wall 31, a bottom wall 33, and a side wall 32 to form a receiving space for the molten glass melted by the burner 20. It has a duct shape. The upper wall 31, the bottom wall 33 and the side wall 32 are each made of a firebrick having excellent thermal conductivity.

The upper wall 31 is made almost arcuate for temperature management in the melter 30. That is, the upper wall 31 of the melter 30 has an arcuate shape so that the flames of the burner 20 spraying from the upper both sides of the melter 30 to the center region of the melter 30 can be concentrated in the center.

The side wall 32 is disposed perpendicular to both sides of the upper wall 31, and the bottom wall 33 is formed at the bottom of the side wall 32 to form a substantially flat surface to form a bottom surface of the melter 30. have. Since the bottom wall 33 is a portion where the molten glass is in direct contact with each other, the bottom wall 33 is made thicker than the top wall 31 and the side wall 32.

Predetermined inclined surfaces 33a and 33b are formed on the bottom surface of the melter 30. The inclined surfaces 33a and 33b are formed to be inclined downward from both corner regions where both side surfaces and the bottom surface of the melter 30 are in contact with each other. Thus, the inclined surfaces 33a and 33b are formed in pairs opposed to each other in the central region along the traveling direction of the molten glass.

In the center region of the bottom surface, that is, the portion where the pair of inclined surfaces 33a and 33b abut each other, a depression 34 is formed which is recessed downward over at least a portion with respect to the traveling direction of the molten glass. The depression 34 may be formed on the bottom wall 33 of the melter 30 by drilling or discharging.

Thus, when the upper wall 31 of the melter 30 containing the silica component is naturally eroded and eroded with the refractory brick of the side wall 32 to generate a foreign matter, the foreign matter flows along the side wall 32 to melt the melter ( 30) to the bottom surface. At this time, since the inclined surfaces 33a and 33b are formed on the bottom surface of the melter 30, the foreign matter is guided by the inclined surfaces 33a and 33b, and the center region of the bottom surface, that is, the pair of inclined surfaces 33a and 33b. After heading to the mutually abutting portion, it is interposed in the depression 34 (see arrows "A" and "B" in FIG. 3).

As such, the foreign matter interposed in the depression 34 sinks in the depression 34 due to its density and viscosity, and thus is not easily flown, so that it is suppressed from being provided to the molding apparatus 18 which is a post-process. Therefore, the quality of the glass product mass-produced can be prevented from falling.

At this time, when a large amount of foreign matter accumulated in the depression 34 formed on the bottom surface of the melter 30, it is necessary to discharge it to the outside. Thus, a drain hole 36 penetrating the bottom wall 33 of the melter 30 is provided, and the drain hole 36 is communicated with the depression 34.

Meanwhile, as shown in FIG. 4, which shows another embodiment of the present invention, after the cover block 38 is provided in the drain hole 36, the opening of the drain hole 36 may be selectively opened and closed. At this time, opening and closing of the drain hole 36 by the cover block 38 includes a cover block driver for driving the cover block 38 and a control unit (not shown) for activating and deactivating the cover block driver under predetermined conditions. Can be made by. The predetermined condition may include both a condition of selectively opening the drain hole 36 based on the pressure change in the melter 30, or a condition of continuously opening the drain hole 36 at a predetermined time period. .

The cover block driving part includes a cylinder body 40a coupled to a fixing member 41 fixed to a support frame 60 provided below the bottom wall 33 of the melter 30, and an end region of the cylinder body 40a. The actuator 40 is adopted as an actuator 40 having a cylinder rod 40b that is extended and shortened in length and has one end coupled to the cover block 38. Thus, when the controller operates the actuator 40 according to a predetermined condition, the cover block 38 may open and close the opening of the drain hole 36. Here, a guide part (not shown) for guiding the movement of the cover block 38 may be further provided for the smooth movement of the cover block 38.

As described above, in the present invention, the inclined surfaces 33a and 33b are formed on the bottom surface of the melter 30 and the depressions 34 are provided in the central region of the inclined surfaces 33a and 33b, thereby providing the bottom layer of the melter 30. It is possible to prevent the contained heterogeneous glass from being provided to the forming apparatus 18 which is a post process.

In addition, by selectively discharging the heterogeneous glass accumulated in the depression 34 to the outside of the melter 30 through the drain hole 36 to prevent deterioration of the quality of the glass product produced in the molding apparatus 18, which is a post-process. can do.

As described above, according to the present invention, there is provided a glass melting furnace which can prevent the foreign glass contained in the bottom layer of the melter from being provided to the molding apparatus which is a post-process.

In addition, there is provided a glass melting furnace to improve the quality of the glass product produced by preventing the dissimilar glass contained in the bottom layer of the melter to the outside to be provided to the molding apparatus is a post-process.

Claims (5)

A glass melting furnace having a melter that heats a solid glass raw material to form a liquid molten glass, The bottom surface of the melter is characterized in that the inclined surface is inclined downwardly opposite to the center region of the bottom surface in the direction of the molten glass from the corner region where both sides and the bottom surface of the melter contact each other Glass melting furnace. The method of claim 1, And a depression recessed from the bottom surface is formed in a central region of the bottom surface where the inclined surfaces abut each other. The method of claim 2, And the depression is in communication with a drain hole passing through the bottom wall of the melter and exposed to the outside. The method of claim 3, And a cover block for opening and closing the opening of the drain hole. The method of claim 4, wherein A cover block driver for driving the cover block; And a control unit for activating and deactivating the cover block driving unit under a predetermined condition.