CN214457586U

CN214457586U - Glass kiln structure

Info

Publication number: CN214457586U
Application number: CN202120132452.0U
Authority: CN
Inventors: 廖衍馀
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-10-22
Anticipated expiration: 2031-01-18

Abstract

The utility model provides a glass kiln structure relates to glass kiln design technical field. A glass kiln structure comprises a kiln body, wherein a kiln chamber is formed in the kiln body, a front retaining wall and a kiln ridge are arranged in the kiln chamber at intervals, and the front retaining wall and the kiln ridge divide the kiln body into a first melting tank and a third melting tank in sequence; a second melting tank is limited between the front retaining wall and the kiln bank; the retaining wall and the bottom surface of the kiln chamber are limited to form a front flow liquid hole, and the front flow liquid hole is communicated with the first melting tank and the second melting tank; the highest point of the kiln bank is lower than the height of the retaining wall, and the bottom surface of the third melting tank is lower than the bottom surface of the first melting tank. The glass melting efficiency of the glass kiln is increased while the quality of the glass liquid is ensured, and the glass melting furnace has the obvious effects of greatly reducing the unit consumption of the glass liquid and saving energy.

Description

Glass kiln structure

Technical Field

The utility model relates to a glass kiln makes technical field, particularly, relates to a glass kiln structure.

Background

The manufacturing of the glass needs a reasonable formula and a reasonable melting temperature, more importantly, the melting of the glass is a very complicated process, the mixture of various granular glass raw materials in the formula is changed into a complicated molten substance, namely molten glass, and the melting of the glass is closely related to the quality of the molten glass. To obtain high-quality glass, firstly, high-quality glass is melted without stones, stripes and bubbles, which is also a problem to be solved in the glass melting process, and the key to solve the problem is the process of melting the glass solution in each stage in a glass kiln.

In the high-temperature reaction process for changing various granular glass raw material mixtures from a solid state to an ideal glass liquid state, the glass furnace is roughly divided into five stages: silicate formation, glass formation, clarification, homogenization and cooling. The characteristics of each of the five stages are mutually closely related and mutually influenced, and the five stages are simultaneously or alternately carried out in the actual melting process, so that the melting process is finished according to the characteristics of the melting process system and the structure of the glass kiln. Conventional glass furnace construction can cause streaking and blister defects. In addition, the melting rate of a common glass kiln is low, the unit consumption of glass liquid is increased, and huge energy waste is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a glass kiln structure, can its quality that can make glass more guarantee, the possibility of the defect of the stripe that has eliminated the appearance and bubble. Meanwhile, the melting efficiency of the glass kiln is increased, the melting rate can be improved by more than 40%, and the more obvious effect is that the unit consumption of glass liquid is greatly reduced and the energy is saved.

The embodiment of the utility model is realized like this:

the embodiment of the application provides a glass kiln structure, which comprises a furnace body, wherein a furnace chamber is arranged in the furnace body, a retaining wall and a kiln ridge are arranged in the furnace chamber at intervals, and the furnace chamber is sequentially divided into a first reaction tank and a third reaction tank by the retaining wall and the kiln ridge; a second reaction tank is limited between the retaining wall and the kiln bank; the retaining wall and the bottom surface of the furnace chamber define a front flow liquid hole, and two ends of the front flow liquid hole are respectively communicated with the first reaction tank and the second counter tank; the highest point of the kiln bank is lower than the height of the retaining wall, and the bottom surface of the third reaction tank is lower than the bottom surface of the first reaction tank.

In some embodiments of the present invention, the lateral wall of the furnace body is provided with a rear throat, and the inlet end of the rear throat is communicated with the third reaction tank.

The utility model discloses an in some embodiments, the exit end of above-mentioned back flow liquid hole is vertical to be provided with the runner, goes up runner and back flow liquid hole intercommunication.

In some embodiments of the present invention, the inner wall of the furnace chamber is provided with an electric melting layer.

In some embodiments of the present invention, a filling layer is disposed between the electric melting layer and the inner wall of the furnace chamber.

In some embodiments of the present invention, the bottom of the furnace body is provided with a cement layer, and a thermal insulation layer is provided between the filling layer and the fixing layer.

In some embodiments of the present invention, a plurality of temperature measuring holes are disposed at intervals on the furnace body.

In some embodiments of the present invention, a support is disposed at the bottom of the furnace body.

In some embodiments of the present invention, the level of the top of the retaining wall is higher than the level of the top of the upper runner.

In some embodiments of the present invention, the furnace body is provided with a charging opening, and the charging opening is covered with a door body.

Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:

the embodiment of the application provides a glass kiln structure, which comprises a furnace body, wherein a furnace chamber is arranged in the furnace body, a retaining wall and a kiln ridge are arranged in the furnace chamber at intervals, and the furnace chamber is sequentially divided into a first reaction tank and a third reaction tank by the retaining wall and the kiln ridge; a second reaction tank is limited between the retaining wall and the kiln bank; the retaining wall and the bottom surface of the furnace chamber define a front flow liquid hole, and two ends of the front flow liquid hole are respectively communicated with the first reaction tank and the second counter tank; the highest point of the kiln bank is lower than the height of the retaining wall, and the bottom surface of the third reaction tank is lower than the bottom surface of the first reaction tank. Different reaction temperatures can be provided in different reaction tanks in the furnace chamber of the furnace body so as to provide melting temperatures of different temperatures. The design of the retaining wall can effectively prevent glass particles from directly entering the second reaction tank, so that the glass solution in the clarification stage is doped with the particles. The weir design separates the second reaction tank from the third reaction tank to provide sufficient reaction time for the second reaction tank, and simultaneously provides higher temperature for eliminating the ripples and the inhomogeneities of the glass. The front flow cave is designed to introduce various molten granular glass raw material mixtures into the second reaction tank for sufficient reaction. The highest point of the kiln bank is lower than the height of the retaining wall, so that the glass liquid in the second reaction tank can directly flow into the third reaction tank. The height of the bottom surface of the third reaction tank is lower than that of the bottom surface of the first reaction tank, so that the deep pool design increases the dispersion and convection on the surface of the melt and increases the density of the molten glass to reduce the surface tension, and the possibility of generating stripes and bubbles on the glass product can be greatly reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of the embodiment of the present invention;

fig. 3 is a partial enlarged view of a portion B according to an embodiment of the present invention.

Icon: 1-a filling layer; 2-an electrofusion layer; 3-a first reaction tank; 4-retaining wall; 5-a second reaction tank; 6-front flow liquid hole; 7-a feed inlet; 8-temperature measuring holes; 9-a third reaction tank; 10-upper flow channel; 11-rear fluid hole; 12-weir; 13-a thermally insulating layer; 14-cement layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation to the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal" and "vertical" do not require that the components be absolutely horizontal, but may be slightly inclined, if present. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

Referring to fig. 1, fig. 1 is a cross-sectional view of an embodiment of the present invention, and the embodiment provides a glass furnace kiln structure, including a furnace body, a furnace chamber is disposed in the furnace body, a retaining wall 4 and a weir 12 are disposed at intervals in the furnace chamber, and the furnace chamber is sequentially divided into a first reaction tank 3 and a third reaction tank 9 by the retaining wall 4 and the weir 12; a second reaction tank 5 is limited and formed between the retaining wall 4 and the kiln ridge 12; the retaining wall 4 and the bottom surface of the furnace chamber define a front flow liquid hole 6, and two ends of the front flow liquid hole 6 are respectively communicated with the first reaction tank 3 and the second reverse tank; the highest point of the kiln bank 12 is lower than the height of the retaining wall 4, and the bottom surface of the third reaction tank 9 is lower than the bottom surface of the first reaction tank 3.

Different reaction temperatures can be provided in different reaction tanks in the furnace chamber of the furnace body so as to provide melting temperatures of different temperatures. In the first reaction tank 3, the composition of each particulate glass raw material mixture undergoes a series of physical and chemical changes during heating, the main solid phase reaction ends and most of the gaseous products escape from the glass raw material mixture. When this stage is completed the glass raw material mixture becomes an opaque agglomerate consisting of silicate and silica, which state is advanced from the furnace charging port 7 to the next stage of the furnace. The opaque frit begins to melt when it is continuously heated, and the eutectic opaque frit begins to melt first, and the mutual melting of silicate and the remaining silica occurs while melting, and the opaque frit becomes transparent by the end of this period, and there is substantially no unreacted glass raw material mixture particles, which are already molten glass. However, these glass melts still contain a very small amount of particles of the raw material mixture, i.e., stones, and a large amount of bubbles, and are also not uniform in chemical composition and properties, and have many streaks. The stones, bubbles and stripes need to be eliminated as much as possible in the glass kiln. Therefore, the novel glass kiln of the design is additionally provided with the front flow liquid hole 6, and the completely melted glass liquid basically without stones can pass through the front flow liquid hole 6 and enter the third reaction tank 9 by utilizing the specific gravity relation of the glass liquid as much as possible.

Further, in the second reaction tank 5, since a large amount of gases are evolved due to decomposition of components of the glass raw material mixture, volatilization of volatile components, and the like during silicate formation and glass formation, a considerable portion of the gases are not completely escaped from the molten glass until the completion of the glass formation process, and they remain in the molten glass in the form of bubbles. The molten glass enters a third stage of fining stage to create conditions in the furnace to eliminate visible bubbles in the molten glass. Generally, the way to eliminate the visible bubbles in the molten glass in the kiln is as follows: 1. properly raising the temperature to reduce the viscosity of the molten glass; 2. properly prolonging the residence time and the flowing distance of the molten glass in the clarification stage; 3. the increase of the radius of the bubbles according to the Stokes' law leads the volume of the bubbles to increase and accelerate the rise, and the bubbles float out of the surface of the molten glass and are broken and disappear. The above 2 nd and 3 rd points are implemented by relying on the structure of the glass furnace, and here the utility model discloses a glass furnace structure forces the glass liquid to flow from bottom to top in this third stage of glass clarification, adds and has promoted the height of the weir 12 to reach the final purpose of eliminating the visible bubbles in the glass liquid in the furnace simultaneously.

Further, in the third reaction tank 9, that is, the homogenization stage of the glass, the homogenization is to eliminate streaks and other inhomogeneities in the molten glass so that the respective portions of the molten glass are made to be uniform in chemical composition as intended. And the streak is a linear transparent inclusion with a chemical composition different from that of the transparent inclusion attached to the molten glass main body. The homogenization process of the molten glass mainly comprises the steps of causing molecular diffusion movement by concentration difference in molten glass melt, and transferring a part with more components in the molten glass to other components with less components so as to achieve the homogenization of the molten glass. The physical property difference of each part of the glass liquid is utilized to cause particle exchange phenomenon in mutual contact, the density of the glass liquid is increased to reduce the surface tension, and the glass liquid with higher density is easy to diffuse on the surface of the melt and gradually sinks to be mixed with the lower layer of the glass liquid to achieve the homogenization of the glass liquid. The temperature difference of the glass liquid exists at different positions to form convection of the glass liquid, the flow of the glass liquid is generated, and the flowing glass liquid causes the diffusion of the glass liquid, so that the aim of homogenizing the glass liquid is fulfilled. In the present embodiment, the glass furnace structure adopts a deep pool design in the fourth stage homogenization area of the molten glass to increase the dispersion and convection on the surface of the melt and increase the density of the molten glass to reduce the surface tension, and then the molten glass enters the next stage after passing through the rear throat 11 and flowing from the upper channel.

Referring to fig. 2, in some embodiments of the present invention, the retaining wall 4 is designed to effectively prevent glass particles from directly entering the second reaction tank 5, so that the glass solution in the fining stage is doped with particles. The above-mentioned weir 12 design separates the second reaction tank 5 from the third reaction tank 9, providing sufficient reaction time for the second reaction tank 5, while the third reaction tank 9 provides higher temperature in order to eliminate the waviness and inhomogeneity of the glass. The forerunner cave 6 is designed to introduce various molten granular glass raw material mixtures into the second reaction tank 5 to fully react in the second reaction tank 5. The highest point of the kiln bank 12 is lower than the height of the retaining wall 4, which is beneficial to the direct flow of the glass liquid in the second reaction tank 5 into the third reaction tank 9. The height of the bottom surface of the third reaction tank 9 is lower than that of the first reaction tank 3, so that the deep pool design increases the dispersion and convection on the surface of the melt and increases the density of the molten glass to reduce the surface tension.

In some embodiments of this embodiment, the side wall of the furnace body is provided with a rear throat 11, and the inlet end of the rear throat 11 is communicated with the third reaction tank 9. The design of the back flow cavity 11 can make the liquid entering the third reaction tank 9 directly flow into the next stage after the sufficient reaction in the third reaction tank 9.

In some embodiments of the present embodiment, the outlet end of the rear flow hole 11 is vertically provided with an upper flow channel 10, and the upper flow channel 10 is communicated with the rear flow hole 11. After the glass liquid passes through the rear flow hole 11, the glass liquid directly enters the upper flow channel 10 to enter the next stage of glass preparation, and the temperature of the glass liquid can be slowly reduced by the glass liquid entering the upper flow channel 10.

In some embodiments of this embodiment, the inner wall of the furnace chamber is provided with an electrofusion layer 2. In different reaction tanks, proper temperature needs to be provided or formed glass cannot be prepared, and the temperature needed by molten glass needs to be reached to achieve the purpose of eliminating defects.

Further, in this embodiment, choose the mode of electric smelting to heat glass liquid for use, the required temperature of liquid can be fast riseed to the mode of electric heating to the control temperature that can be quick is high or low, can be great practice thrift the energy consumption.

Further, in this embodiment, the material of the electrofused layer 2 may be an electrofused brick, which is a refractory product with a zirconia content of 33% to 45% prepared by using industrial alumina powder and selected zircon sand as raw materials. The fused brick is mainly used as a refractory material for high-temperature and scouring-resistant kilns such as a tank furnace in the glass industry, a glass electric kiln, a slideway in the steel industry, a kiln in the sodium silicate industry and the like.

In some embodiments of the present embodiment, a filling layer 1 is disposed between the electrofusion layer 2 and an inner wall of the furnace chamber. The arrangement of the filling layer 1 can effectively isolate the heat exchange between the outside of the furnace body and the glass liquid in the furnace cavity, and reduce the heat loss.

In some embodiments of the present embodiment, a cement layer 14 is disposed at the bottom of the furnace body, and a heat insulation layer 13 is disposed between the filling layer 1 and the cement layer 14. The heat insulation layer 13 can effectively reduce heat loss so as to prevent excessive heat exchange with the outside and the need of continuously increasing the temperature of the reaction tank.

Further, in this embodiment, the material of the thermal insulation layer 13 may be light clay brick, which is also called clay thermal insulation brick. Generally refers to a light refractory material made of refractory clay and having an alumina content of 30% to 46%. The refractoriness of the brick is not much different from that of the common clay brick with the same components. Many air holes, and the performances of compressive strength, slag resistance, corrosion resistance and the like are greatly reduced. The porous material is formed by pouring plastic pug or slurry and adding inflammable matter, gas generating method and foaming method. Mainly used for the thermal insulation layer 13 in the industrial kiln. The maximum using temperature is 1200-1500 ℃.

In some embodiments of this embodiment, a plurality of temperature measuring holes 8 are spaced on the furnace body. The temperature of each reaction tank must be strictly controlled, and once the temperature of each reaction tank is too high or too low, the glass product is not formed, so that strict temperature supervision of the molten glass at each stage is required. The corresponding reaction tank is provided with the corresponding temperature measuring hole 8, which is beneficial to the accurate measurement of the temperature.

Further, in this embodiment, an infrared thermometer can be selected for the temperature measuring hole 8, and in the glass industry, the molten glass is heated to a high temperature. An infrared thermometer was used to monitor the temperature in the furnace. The temperature of the molten glass is measured to determine the appropriate temperature of the furnace mouth. In glassware articles, the temperature of the molten glass is monitored at each stage of the process. An incorrect temperature or too rapid temperature change can cause uneven expansion or contraction, which can cause defects in the glass article. An infrared thermometer may be used to detect the temperature of the molten glass in the different reaction tanks.

In some embodiments of this embodiment, the bottom of the furnace body is provided with a support. The support supports the whole furnace body, so that the furnace body cannot be in direct contact with the ground. And the furnace body can be fixed at a required position, no abnormal movement occurs, and the installation is convenient.

In some embodiments of this embodiment, the level of the top of the retaining wall 4 is higher than the level of the top of the upper runner 10. The height of the retaining wall 4 is the theoretical maximum height of the molten glass flow, and the retaining wall mainly shields the solid-liquid mixed phase from directly entering the second reaction tank 5. In order that the molten glass in the upper run 10 can naturally flow into the next stage by a pressure difference generated by a height difference therebetween, the level of the upper run should be lower than the maximum level of the retaining wall 4. Further, the upper runner is too high, so that the molten glass cannot naturally flow into the next stage for manufacturing, and if the upper runner is too low, the slow cooling effect is not good for the next stage of molding.

In some embodiments of this embodiment, the furnace body is provided with a feed inlet 7, and the feed inlet 7 is covered with a door (not shown in the figure). The design of the charging opening 7 can be beneficial to the charging of materials, and the height of the charging opening 7 is higher than that of the kiln bank 12. The charging opening 7 is covered with a door body, and the door body is in seamless connection with the charging opening 7, otherwise, a large amount of heat loss can be caused. In addition, the height of the feeding port 7 is lower than that of the kiln bank 12, so that glass liquid at the opened door body directly flows out, and the high-temperature glass liquid directly scalds a human body to cause safety accidents.

When the furnace is used, a door body on a furnace body is opened, then various granular glass raw material mixture components are fed into a furnace cavity from a feeding port 7, the various components begin to be melted in a first reaction tank 3 along with the increase of temperature, the components are changed from a solid phase to a liquid phase, the melted liquid enters a second reaction tank 5 through a front flow liquid hole 6, a large number of bubbles exist in the glass liquid, the temperature is continuously raised, the volume of the bubbles in the glass liquid can be increased, the bubbles can be accelerated to rise and be removed, and when the liquid level of the glass liquid reaches the height of a weir 12, the bubbles in the glass liquid are known to be discharged. The molten glass in the second reaction tank 5 flows into the third reaction tank 9 after passing through the weir 12, enters the homogenization stage of the glass, eliminates stripes and other inhomogeneities, and the temperature of the third reaction tank 9 is slightly lower than that of the second reaction tank, so that the dispersion and convection on the surface of the melt and the density of the molten glass can be increased in the reaction tank to reduce the surface tension and remove defects. Then the fluid passing through the third reaction tank 9 directly flows into the rear throat 11, flows to the upper runner 10 through the rear throat 11, and the glass liquid completes the process of the furnace body.

In summary, the embodiment of the present application provides a glass kiln structure, which includes a furnace body, wherein a furnace chamber is arranged in the furnace body, a retaining wall 4 and a kiln ridge 12 are arranged in the furnace chamber at intervals, and the furnace chamber is sequentially divided into a first reaction tank 3 and a third reaction tank 9 by the retaining wall 4 and the kiln ridge 12; a second reaction tank 5 is limited and formed between the retaining wall 4 and the kiln ridge 12; the retaining wall 4 and the bottom surface of the furnace chamber define a front flow liquid hole 6, and two ends of the front flow liquid hole 6 are respectively communicated with the first reaction tank 3 and the second reverse tank; the highest point of the kiln bank 12 is lower than the height of the retaining wall 4, and the bottom surface of the third reaction tank 9 is lower than the bottom surface of the first reaction tank 3. Different reaction temperatures can be provided in different reaction tanks in the furnace chamber of the furnace body so as to provide melting temperatures of different temperatures. The design of the retaining wall 4 can effectively prevent the glass particles from directly entering the second reaction tank 5, so that the glass solution in the clarification stage is doped with the particles. The above-mentioned weir 12 design separates the second reaction tank 5 from the third reaction tank 9, providing sufficient reaction time for the second reaction tank 5, while the third reaction tank 9 provides higher temperature in order to eliminate the waviness and inhomogeneity of the glass. The forerunner cave 6 is designed to introduce various molten granular glass raw material mixtures into the second reaction tank 5 to fully react in the second reaction tank 5. The highest point of the kiln bank 12 is lower than the height of the retaining wall 4, which is beneficial to the direct flow of the glass liquid in the second reaction tank 5 into the third reaction tank 9. The height of the bottom surface of the third reaction tank 9 is lower than that of the first reaction tank 3, so that the deep pool design increases the dispersion and convection on the surface of the melt and increases the density of the molten glass to reduce the surface tension. The utility model discloses a glass kiln structural design scheme has just further promoted traditional glass melting technology from theory to actual through novel kiln design, has increased the efficiency that the glass kiln melted when making the quality of glass liquid more guaranteed again to can improve the rate of fusion more than 40%, more obvious effect is great reduction the unit consumption of glass liquid, practiced thrift the energy. Therefore, the glass kiln structure of the utility model has the advantages of good melting quality, high melting rate and energy conservation.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The glass kiln structure is characterized by comprising a kiln body, wherein a kiln chamber is formed in the kiln body, a front retaining wall and a kiln ridge are arranged in the kiln chamber at intervals, and the kiln chamber is sequentially divided into a first melting tank and a third melting tank by the front retaining wall and the kiln ridge;

a second melting tank is limited between the front retaining wall and the kiln bank;

the retaining wall and the bottom surface of the kiln chamber define a front flow liquid hole, and two ends of the front flow liquid hole are respectively communicated with the first melting tank and the second melting tank;

the highest point height of the kiln bank is lower than the height of the retaining wall, and the bottom surface height of the third melting tank is lower than the bottom surface height of the second melting tank.

2. The glass kiln structure as defined in claim 1, wherein the kiln body includes a back wall that defines a back throat with a bottom surface of the third melting tank, an inlet end of the back throat communicating with the third melting tank.

3. The glass kiln structure as defined in claim 2, wherein the exit end of the back flow throat is vertically provided with an uptake, the uptake communicating with the back flow throat.

4. The glass kiln construction according to claim 1, characterized in that the inner wall of the kiln chamber is provided with an electrofusion layer.

5. The glass kiln structure as claimed in claim 4, wherein a cushion of clay bricks at the bottom of the kiln body is provided between the electrofusion layer and the inner wall of the kiln chamber.

6. The glass kiln structure as claimed in claim 5, wherein the bottom of the kiln body is provided with a heat insulation layer, a heat insulation layer is arranged between the clay brick cushion layer at the bottom of the kiln body and the heat insulation layer, and light clay bricks are arranged in the heat insulation layer.

7. The glass kiln structure of claim 1, wherein the kiln body is provided with a plurality of temperature measuring holes at intervals.

8. The glass kiln structure of claim 1, wherein a concrete frame is provided at the bottom of the kiln body.

9. The glass kiln structure of claim 3, wherein the level of the top of the front retaining wall is higher than the level of the top of the uptake.

10. The glass kiln structure as claimed in claim 1, wherein the kiln body is provided with a feed inlet, and the feed inlet is covered with a door body.