阅读说明：本技术 一种玻璃窑炉无回流无维护流液洞 (Non-return non-maintenance throat of glass kiln ) 是由 孙新奉 孙波 于 2021-09-18 设计创作，主要内容包括：本发明公开了一种玻璃窑炉无回流无维护流液洞,包括依次连结的玻璃窑炉熔化部、玻璃窑炉无回流无维护流液洞与玻璃窑炉成型部；所述的玻璃窑炉无回流无维护流液洞内设置有金属内衬；还包括第一玻璃窑炉无回流无维护流液洞附件、第二玻璃窑炉无回流无维护流液洞附件、第三玻璃窑炉无回流无维护流液洞附件、玻璃窑炉无回流无维护流液洞防堵系统。本发明具有如下优点：使流液洞截面缩小,大幅提高玻璃液流速,杜绝玻璃液回流,降低能耗。能减少投资,节能降耗,且整过窑期无需维护,省心省力,适用于所有流液洞玻璃窑炉。因流液洞寿命的大幅提高,能提高窑炉寿命,提高窑炉周期生产率。(The invention discloses a backflow-free and maintenance-free throat of a glass kiln, which comprises a glass kiln melting part, a backflow-free and maintenance-free throat of the glass kiln and a glass kiln forming part which are sequentially connected; a metal lining is arranged in the non-backflow and non-maintenance throat of the glass kiln; the anti-blocking system also comprises a backflow-free and maintenance-free throat accessory of the first glass kiln, a backflow-free and maintenance-free throat accessory of the second glass kiln, a backflow-free and maintenance-free throat accessory of the third glass kiln and a backflow-free and maintenance-free throat anti-blocking system of the glass kiln. The invention has the following advantages: the cross section of the liquid flow hole is reduced, the flow velocity of the molten glass is greatly improved, the backflow of the molten glass is avoided, and the energy consumption is reduced. The method has the advantages of reducing investment, saving energy, reducing consumption, having no need of maintenance in the whole kiln period, saving labor and labor, and being suitable for all throat glass kilns. The service life of the throat is greatly prolonged, so that the service life of the kiln can be prolonged, and the periodic productivity of the kiln can be improved.)

1. A backflow-free and maintenance-free throat of a glass kiln is characterized by comprising a glass kiln melting part (1), a backflow-free and maintenance-free throat of the glass kiln (3) and a glass kiln forming part (2) which are sequentially connected; a metal lining (4) is arranged in the non-backflow and non-maintenance throat (3) of the glass kiln; the anti-blocking system also comprises a backflow-free and maintenance-free throat accessory (5) of the first glass kiln, a backflow-free and maintenance-free throat accessory (6) of the second glass kiln, a backflow-free and maintenance-free throat accessory (7) of the third glass kiln and a backflow-free and maintenance-free throat anti-blocking system (8) of the glass kiln.

2. The non-return and non-maintenance throat of a glass kiln according to claim 1, wherein the connection structure of the melting part (1) of the glass kiln, the forming part (2) of the glass kiln and the non-return and non-maintenance throat (3) of the glass kiln is one of horizontal type, sunken type, upper table type, inclined type, sunken inclined type and upper table inclined type.

3. The non-return and non-maintenance throat of a glass kiln as defined in claim 1, wherein the non-return and non-maintenance throat (3) of the glass kiln adopts a connection structure of a brick structure and a metal structure.

4. The non-return and non-maintenance throat of a glass kiln as claimed in claim 3, characterized in that the joining structure of the brick structure and the metal structure of the non-return and non-maintenance throat (3) of the glass kiln is of a mosaic type.

5. The non-return and non-maintenance throat of a glass kiln as defined in claim 3, wherein a metal guard plate is arranged on the liquid surface of the non-return and non-maintenance throat (3) of the glass kiln, and a metal sealing plate is arranged on the liquid surface of the non-return and non-maintenance throat (3) of the glass kiln.

6. The glass kiln no-backflow no-maintenance throat according to claim 3, characterized in that the connection mode of the metal lining (4) of the glass kiln no-backflow no-maintenance throat (3) and the metal accessories is one or more of welding, clamping and bolts.

7. The non-return and non-maintenance throat of a glass kiln as defined in claim 1, wherein the non-return and non-maintenance throat anti-blocking system (8) is an electrical heating system.

Technical Field

The invention relates to the field of glass manufacturing, kiln major and kiln throat technology, in particular to a non-backflow and non-maintenance throat of a glass kiln.

Background

Glass products are not available in daily life, and various products made of glass are often used. Such as plate glass, electronic glass, glass fiber, daily glass and medicinal glass. The material has special physical and chemical properties, energy conservation, environmental protection, recycling and the like, and is widely applied in the world.

The glass kiln is a key device for glass production, and the throat of the glass kiln, which is the most key part of the glass kiln, is the throat where molten and clarified glass in the glass kiln flows to the working part.

The throat of the existing glass kiln is made of high-grade refractory materials. The quality, yield and production period of the product are seriously influenced by high-temperature erosion and stripping of the refractory materials. The section of the throat is too small due to the restriction of the flow velocity of the molten glass, and the section of the throat is gradually enlarged due to the erosion and peeling of the molten glass at high temperature, so that the flow velocity of the molten glass is reduced, and a large amount of backflow of the molten glass is caused, thereby increasing the energy consumption. In order to slow down the damage of the throat, a large-power cooling device is required to be arranged, so that the investment, the energy consumption and the production cost are increased. Therefore, a backflow-free and maintenance-free throat of a glass kiln is urgently needed at present.

Disclosure of Invention

The invention aims to solve the problems in the background technology and provide a backflow-free and maintenance-free throat of a glass kiln.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: a backflow-free and maintenance-free throat of a glass kiln comprises a melting part of the glass kiln, a backflow-free and maintenance-free throat of the glass kiln and a forming part of the glass kiln which are sequentially connected; a metal lining is arranged in the non-backflow and non-maintenance throat of the glass kiln; the anti-blocking system also comprises a backflow-free and maintenance-free throat accessory of the first glass kiln, a backflow-free and maintenance-free throat accessory of the second glass kiln, a backflow-free and maintenance-free throat accessory of the third glass kiln and a backflow-free and maintenance-free throat anti-blocking system of the glass kiln.

As a preferred scheme, the connection structure mode of the glass kiln melting part, the glass kiln forming part and the glass kiln backflow-free maintenance-free throat is one of horizontal type, sinking type, upper table type, inclined type, sinking inclined type and upper table inclined type.

As a preferred scheme, the backflow-free maintenance-free throat of the glass kiln adopts a connection structure of a brick structure and a metal structure.

As a preferred scheme, the connection structure of the brick structure and the metal structure of the backflow-free maintenance-free throat of the glass kiln is embedded.

As a preferred scheme, a metal protective plate is arranged on the liquid-facing surface of the non-backflow and non-maintenance throat of the glass kiln, and a metal sealing plate is arranged on the back liquid surface of the non-backflow and non-maintenance throat 3 of the glass kiln.

As a preferred scheme, the connection mode of the metal lining of the non-backflow and non-maintenance liquid flow hole of the glass kiln and the metal accessory is one or more of welding, clamping and bolts.

As a preferred scheme, the backflow-free maintenance-free throat anti-blocking system of the glass kiln is an electric heating system.

The invention has the following advantages: through the selection design of the lining material of the throat, the section of the throat can be reduced, the flow velocity of molten glass is greatly improved, the backflow of the molten glass is avoided, and the energy consumption is reduced. Because the selected material is not corroded by the high temperature of the glass liquid, the glass liquid is not polluted, the production can be stable, and the yield and the quality can be improved. Because the original cooling system is not needed, the investment can be reduced, the energy is saved, the consumption is reduced, the maintenance is not needed in the whole kiln period, the worry and the labor are saved, and the method is suitable for all the glass kilns with the throat. The service life of the throat is greatly prolonged, so that the service life of the kiln can be prolonged, and the periodic productivity of the kiln can be improved.

Drawings

FIG. 1 is a schematic structural view of a non-return and non-maintenance throat of a glass kiln according to the present invention.

Fig. 2 is a calculation formula of critical flow of a throat.

FIG. 3 is a formula for calculating the cross-sectional area of a throat.

FIG. 4 is a schematic diagram of the calculation of critical flow of a throat.

As shown in the figure: 1. the device comprises a glass kiln melting part, a glass kiln forming part, a glass kiln backflow-free and maintenance-free throat, a metal lining, a first glass kiln backflow-free and maintenance-free throat accessory, a second glass kiln backflow-free and maintenance-free throat accessory, a third glass kiln backflow-free and maintenance-free throat accessory, and a glass kiln backflow-free and maintenance-free throat anti-blocking system 8.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.

Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

With the attached drawings, the non-backflow and non-maintenance throat of the glass kiln comprises a glass kiln melting part 1, a non-backflow and non-maintenance throat 3 of the glass kiln and a glass kiln forming part 2 which are connected in sequence; a metal lining 4 is arranged in the non-backflow and non-maintenance throat 3 of the glass kiln; the system also comprises a backflow-free and maintenance-free throat accessory 5 of the first glass kiln, a backflow-free and maintenance-free throat accessory 6 of the second glass kiln, a backflow-free and maintenance-free throat accessory 7 of the third glass kiln and a backflow-free and maintenance-free throat anti-blocking system 8 of the glass kiln.

As a preferred embodiment of this embodiment, the joining structure of the glass furnace melting part 1, the glass furnace forming part 2 and the non-backflow and non-maintenance throat 3 is one of a horizontal type, a sinking type, a top table type, an inclined type, a sinking inclined type and a top table inclined type.

As a preferred embodiment of this embodiment, the backflow-free and maintenance-free throat 3 of the glass kiln is a connection structure of a brick structure and a metal structure.

As a preferred embodiment of this embodiment, the joining structure of the brick structure and the metal structure of the backflow-free and maintenance-free throat 3 of the glass kiln is a mosaic type.

As a preferred embodiment of this embodiment, the liquid-facing surface of the non-backflow and non-maintenance throat 3 of the glass kiln is provided with a metal protection plate, and the liquid-back surface of the non-backflow and non-maintenance throat 3 of the glass kiln is provided with a metal sealing plate.

As a preferred embodiment of this embodiment, the connection mode of the metal lining 4 of the non-backflow and non-maintenance throat 3 of the glass kiln and the metal accessories is one or more of welding, buckling and bolts.

As a preferred embodiment of this embodiment, the backflow-free and maintenance-free throat anti-blocking system 8 of the glass kiln is an electric heating system.

When the invention is implemented, different fluid cavity forms are selected according to the characteristics, the forming requirements and the economic conditions of various glass products: selecting different lining materials of the throat; selecting different connection modes: selecting the flow rate of the molten glass; selecting the cross section shape and area of the liquid flow hole; selecting or not selecting a kiln throat accessory and an anti-blocking system according to the material of the throat and the kiln structure; reasonable-designed throat structure.

The metal lining and the metal accessory of the backflow-free and maintenance-free throat are made of high-temperature metal materials, and the high-temperature metal materials can be one of platinum, rhodium, iridium, lanthanum, tungsten, molybdenum, tantalum, niobium and alloys thereof. The section of the liner of the backflow-free and maintenance-free throat is in any feasible geometric shape, and is provided with a supporting piece in a corresponding shape, and the section area of the liner of the backflow-free and maintenance-free throat is calculated according to the critical flow of the throat.

The principle of the invention is as follows: calculation of critical flow of fluid cavity

In order to better design the throat, and to find out the relationship between the discharge amount of the molten glass, the temperature of the molten glass, the height of the liquid level, the size of the throat and the critical flow of the throat, a mathematical model is established by related industry experts according to a graph (figure 4), and a calculation formula of the critical flow of the throat is derived through complicated derivation and calculation, as shown in figure 2.

In the design of the throat, as long as the height of the throat is in accordance with the formula (15) and the discharge amount of the glass liquid is in accordance with the formula (16), a reasonable backflow-free glass liquid throat can be obtained.

In the formula:

v-throat critical flow

g-acceleration of gravity

Rho 1-molten glass density of melting tank

Volume expansion coefficient of beta-glass liquid

Delta t-temperature difference between melting tank and working tank

h-height of throat

b-width of throat

Average viscosity of the glass liquid

L-fluid cavity length

However, in the actual design work of production units, part of parameters in the formula are difficult to obtain accurately, so that experts can perform rough calculation according to the flow rate of the molten glass, so that the calculation process is simplified, and the design application can be met.

In practice, the flow rate of the molten glass is determined according to the production equipment and the production scale, namely the discharge amount of the molten glass is known. The derivation and experience show that the flow velocity of the non-return glass throat is more than 18 m/h, so that the cross-sectional area of the throat can be simply calculated, and the height-width ratio of the throat can be determined according to professional routine.

The calculation formula of the cross section area of the fluid cavity is shown in figure 3:

in the formula:

a-cross sectional area of fluid flow hole

Q-glass flow rate

P-molten glass density

V-glass flow rate

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.