CN203922969U - A kind of glass-melting furnace - Google Patents

Abstract

The utility model discloses a kind of glass-melting furnace, comprise the thermal insulation layer that surrounds whole smelting furnace, described smelting furnace comprises melting area, clarification homogenization zone and cooling zone; The furnace wall of described melting area and clarification homogenization zone is provided with zone of heating; In zone of heating, be covered with nichrome wire; Melting area is connected with opening for feed; Cooling zone is connected with discharge port; Between melting area and clarification homogenization zone, be provided with the first divider wall; The first divider wall is provided with the first fluid hole; Between clarification homogenization zone and cooling zone, be provided with the second divider wall; The second divider wall bottom is provided with the second fluid hole; Clarification top, homogenization zone is provided with air outlet; In cooling zone, be longitudinally provided with some baffle plates.The glass-melting furnace that the utility model provides, adopts electric energy melting, reduced energy dissipation, and melt homogeneity is good, can realize serialization and produce.

Description

a glass melting furnace

technical field

The utility model relates to a melting furnace, in particular to a glass melting furnace.

Background technique

Glass melting refers to the process of heating and melting qualified batch materials at high temperature to form transparent, pure, uniform and suitable for forming glass liquid. The melting of glass includes a series of physical and chemical phenomena and reactions; as a result of these phenomena and reactions, various batch materials become complex melts, namely molten glass. The glass melting process can be roughly divided into five stages: the formation of silicate → the formation of molten glass → the clarification of molten glass → the homogenization of molten glass → the cooling of molten glass. After the glass melt formation stage is over, the whole melt contains many bubbles (among which the diameter is less than 0.3 mm called small bubbles), continue to heat, reduce the viscosity, and remove visible gas inclusions from the glass melt, called glass melt The clarification of glass is an important stage in the glass melting process. In actual production, it is necessary to try to increase the clarification temperature to reduce the viscosity of the glass liquid and promote the rapid removal of air bubbles. The cooling of the molten glass is the final stage of the melting process, and its purpose is to increase the viscosity of the molten glass to the range required for molding. The cooling of the molten glass must be uniform, and the result of homogenization must not be damaged. Generally, natural cooling is adopted, mainly relying on the uniform heat radiation from the glass liquid surface and the pool wall and bottom to the outside for cooling.

Most of the glass powder melting furnaces currently in use use coal or gas lamps as fuel for heating, which leads to serious energy waste and pollution problems. The setting of the glass powder melting furnace basically adopts the method of starting the melt port drainage at the bottom of the furnace. The molten body and the raw materials to be melted are mixed together, resulting in low quality glass products; , resulting in an extended operating process time.

Contents of the invention

The purpose of the utility model is to provide a glass melting furnace which adopts electric energy melting, has good melt uniformity and can be produced continuously.

The utility model solves the defects of the existing glass melting furnaces such as large energy waste, poor continuous productivity, poor uniformity of glass melt, and low quality of glass products.

The technical solution adopted by the utility model to solve the technical problem is: a glass melting furnace, including an insulating layer surrounding the entire melting furnace, the melting furnace includes a melting zone, a clarification homogenization zone and a cooling zone; the melting zone and the clarification homogenization zone A heating layer is provided on the furnace wall; the heating layer is covered with electric heating wires; the melting zone is connected to the feed port; the cooling zone is connected to the discharge port; the melting zone is connected to the clarification and homogenization zone A first partition wall is provided between them; several first flow holes are evenly opened on the first partition wall; a second partition wall is provided between the clarification and homogenization zone and the cooling zone; A second flow hole is provided at the bottom of the partition wall; an air outlet is provided at the top of the clarification and homogenization zone; several baffles are longitudinally provided in the cooling zone.

The number of baffles in the cooling zone is three, which are the first baffle, the second baffle and the third baffle in turn; the bottom of the first baffle is connected to the furnace body, and the top is a melt flow channel; The top of the second baffle is connected to the furnace body, and the bottom is a melt flow channel; the bottom of the third baffle is connected to the furnace body, and the top is a melt flow channel. The molten glass flows along the curve of the baffle, and the temperature of the molten glass is reduced through heat exchange with the baffle during the flow process; the number and height of the baffles can be adjusted according to the temperature of the molten glass during discharge.

There are three first liquid flow holes; the height of the first liquid flow holes is 15-20 cm. The design of the first flow hole can generate a certain turbulent flow when the molten glass flows through, which is helpful for the escape and homogenization of bubbles.

The height of the second liquid flow hole is 20-25 cm.

Temperature measuring thermocouples are installed on the side wall and bottom of the melting zone.

The side wall and bottom of the clarification and homogenization zone are provided with temperature measuring thermocouples.

Temperature-measuring thermocouples are arranged on both sides of the discharge port.

The temperature of the heating layer in the clarification and homogenization zone is higher than the temperature of the heating layer in the melting zone.

The beneficial effects of the utility model are: compared with the prior art, in the glass melting furnace provided by the utility model, the furnace body is divided into a melting zone, a clarification and homogenization zone and a cooling zone, and the melting zone and the clarification and homogenization zone adopt different heating temperatures And the design of the first flow hole makes the glass melt fully clarified and homogenized; the baffle plate is used in the cooling zone to make the melt curve flow, so that the cooling is uniform and stable, and finally a high-quality glass melt is obtained. In addition, the glass melting furnace provided by the utility model is heated by electric energy, which reduces energy waste; the entire glass melting process can be continuously carried out, which is beneficial to continuous production.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figure 1, a kind of glass melting furnace comprises the insulation layer 1 that surrounds the whole melting furnace, and the melting furnace includes a melting zone 15, a clarification and homogenization zone 12 and a cooling zone 9; The furnace wall is provided with a heating layer 2; the heating layer 2 is covered with electric heating wires 3; the melting zone 15 is connected to the feed port 17; the cooling zone 9 is connected to the discharge port 8; the melting A first separation wall 13 is provided between the zone 15 and the clarification and homogenization zone 12; three first liquid flow holes 14 are evenly opened on the first separation wall 13; the height of the first liquid flow holes 14 is 15 to 20 cm , the preferred height in the present embodiment is 18cm. A second separation wall 10 is provided between the clarification homogenization zone 12 and the cooling zone 9; a second liquid flow hole 11 is provided at the bottom of the second separation wall 10; the height of the second liquid flow hole 11 is It is 20～25cm, and the preferred height in the present embodiment is 22cm. The top of the clarification and homogenization zone 12 is provided with an air outlet 4 . Three baffles are longitudinally arranged in the cooling zone 9, which are the first baffle 5, the second baffle 6 and the third baffle 7 in sequence; the bottom of the first baffle is connected to the furnace body, and the top is the melt Flow channel; the top of the second baffle is connected with the furnace body, and the bottom is a melt flow channel; the bottom of the third baffle is connected with the furnace body, and the top is a melt flow channel. Temperature-measuring thermocouples 16 are installed on the side walls and bottom of the melting zone 15 and clarification and homogenization zone 12, and temperature-measuring thermocouples are also installed on both sides of the discharge port 8. The temperature of the heating layer in the clarification and homogenization zone 12 is higher than the temperature of the heating layer in the melting zone 15 .

When working, the glass raw material to be melted is put into the melting furnace from the feed port 17, and the glass raw material is heated and melted in the melting zone 15 to form a translucent molten glass; the molten glass flows into the clarification and homogenization zone through the first flow hole 14 12. The temperature in the clarification and homogenization zone 12 is higher than that in the melting zone 15, which is conducive to the escape of bubbles in the molten glass, and is also conducive to more uniform and consistent components of the molten glass. The air outlet 4 on the top is conducive to the discharge of bubbles and volatile Material; the design of the first liquid flow hole 14 can make the glass liquid flow through to produce a certain turbulent flow, which helps the bubbles to escape and homogenize; the glass liquid after clarification and homogenization is basically transparent, and passes through the second flow liquid The hole 11 flows into the cooling zone 9, and a baffle is set in the cooling zone 9, so that the molten glass flows along the curve of the baffle. According to the liquid temperature, adjust the number and height of the baffles. Both the melting zone 15 and the clarifying and homogenizing zone 12 are provided with thermocouples 16 to detect the temperature in each zone. The discharge port 8 is also provided with a thermocouple for detecting the discharge temperature.

And in the production process, when the melt flows from the melting zone to the rear, it can continue to feed and realize continuous production.

Claims (8)

1. a glass-melting furnace, comprises the thermal insulation layer that surrounds whole smelting furnace, it is characterized in that described smelting furnace comprises melting area, clarification homogenization zone and cooling zone; The furnace wall of described melting area and clarification homogenization zone is provided with zone of heating; In described zone of heating, be covered with nichrome wire; Described melting area is connected with opening for feed; Described cooling zone is connected with discharge port; Between described melting area and clarification homogenization zone, be provided with the first divider wall; On the first described divider wall, evenly offer several the first fluid holes; Between described clarification homogenization zone and cooling zone, be provided with the second divider wall; The second described divider wall bottom is provided with the second fluid hole; The top of described clarification homogenization zone is provided with air outlet; In described cooling zone, be longitudinally provided with some baffle plates.

2. a kind of glass-melting furnace as claimed in claim 1, is characterized in that the baffle plate number in described cooling zone is three, is followed successively by the first baffle plate, second baffle and the 3rd baffle plate; The bottom of described the first baffle plate is connected with body of heater, and top is melt flow channel; The top of described second baffle is connected with body of heater, and bottom is melt flow channel; The bottom of described the 3rd baffle plate is connected with body of heater, and top is melt flow channel.

3. a kind of glass-melting furnace as claimed in claim 1, is characterized in that the first described fluid hole has three; The height of described the first fluid hole is 15～20cm.

4. a kind of glass-melting furnace as claimed in claim 1, is characterized in that the height of the second described fluid hole is 20～25cm.

5. a kind of glass-melting furnace as claimed in claim 1, is characterized in that the sidewall of described melting area and bottom are provided with temperature thermocouple.

6. a kind of glass-melting furnace as claimed in claim 1, is characterized in that sidewall and the bottom of described clarification homogenization zone is provided with temperature thermocouple.

7. a kind of glass-melting furnace as claimed in claim 1, is characterized in that described discharge port both sides are provided with temperature thermocouple.

8. a kind of glass-melting furnace as claimed in claim 1, is characterized in that the temperature of zone of heating in described clarification homogenization zone is higher than the temperature of zone of heating in described melting area.