Glass vacuum furnace with heating assembly

Abstract

The utility model discloses a glass vacuum furnace with a heating assembly, and relates to the technical field of vacuum furnaces. Comprising a heat preservation furnace body, a smelting furnace is arranged in the heat preservation furnace body, an electromagnetic coil for heating is arranged below the smelting furnace, and a control device for controlling the electromagnetic coil to ascend and descend is arranged on the outer side of the heat preservation furnace body; and a through hole is formed in the bottom of the smelting furnace. Compared with a traditional glass vacuum furnace, through the arrangement of the heat preservation furnace body, the smelting furnace, the control device and the like, in the using process of the glass vacuum furnace, the annular grooves are formed in the smelting furnace, the copper pipe is fixed to the inner wall of each annular groove, the heat conduction efficiency is improved, and heating is more uniform. The copper pipes are communicated with each other to form a complete heating system, and the heat conduction bulges communicated with the copper pipes are arranged in the smelting furnace, so that the heat dissipation area can be increased, the heating efficiency is further improved, and the flowing of glass liquid is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum furnaces, in particular to a glass vacuum furnace with a heating component. Background Art

[0002] A uniform heating device for a vacuum furnace with the authorization announcement number CN210237703U discloses that a plurality of armored heating wires and a plurality of protective gas nozzles are installed on the inner side of the insulation cylinder, the plurality of armored heating wires and the plurality of protective gas nozzles are staggered, and two symmetrically arranged support components are arranged on the inner side of the insulation cylinder, and the support components include a sleeve column welded on the inner side of the insulation cylinder, and a mounting hole is arranged on the top of the sleeve column, and a sliding column is movably installed in the mounting hole. The utility model has a reasonable design, and when in use, the height of the ceramic strip can be adjusted at any time according to the thickness of the workpiece, so that workpieces of different thicknesses can be close to the center of the insulation cylinder, so that the surface of the workpiece is heated evenly, and the processing quality of the workpiece is improved.

[0003] The above device can make the vacuum furnace heated evenly, but it is not suitable for processing glass and other materials that are liquid after melting. During the processing, the internal support components will affect the flow of the liquid, making it inconvenient to unload. In view of this situation, the utility model proposes a new solution. Utility Model Content

[0004] The utility model aims to provide a glass vacuum furnace with a heating component to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a glass vacuum furnace with a heating component, comprising an insulating furnace body, a melting furnace is arranged inside the insulating furnace body, a heating electromagnetic coil is arranged below the melting furnace, and a control device for controlling the lifting of the electromagnetic coil is arranged outside the insulating furnace body; a through hole is opened at the bottom of the melting furnace, a connecting shaft is fixedly connected to the inner wall of the through hole, the connecting shaft passes through the insulating furnace body and is arranged outside the insulating furnace body, the connecting shaft is rotatably connected to the insulating furnace body, and a driving member is arranged outside the insulating furnace body for braking the connecting shaft to drive the melting furnace to perform unloading action.

[0006] Preferably, two induction rods are fixedly connected to the bottom of the furnace, the induction rods extend upward to the inside of the furnace, and the induction rods located inside the furnace are wrapped by ceramics, and the axes of the induction rods and the electromagnetic coil are coaxial.

[0007] Preferably, the control device comprises a track fixed to the outside of the heat preservation furnace body, a slider is slidably connected to the middle of the track, a threaded rod is rotatably connected between the top and bottom of the track, and the threaded rod is screwed to the slider; a power supply module for supplying energy to the electromagnetic coil is fixed to one side of the slider, wherein a motor for driving the threaded rod is also installed on the top of the track;

[0008] A slide groove is provided on one side of the heat preservation furnace body, and one end of the electromagnetic coil passes through the slide groove and is connected to the power supply module.

[0009] Preferably, the melting furnace is a fully ceramic furnace body, a plurality of annular grooves are provided in the melting furnace, a copper tube is fixed to the inner wall of each annular groove, each copper tube is interconnected and one of the copper tubes is connected to the induction rod, and a heat-conducting protrusion connected to the copper tube is also provided in the melting furnace.

[0010] Preferably, a feed pipe is provided on the top of the insulation furnace body, the feed pipe is directly opposite to the top of the melting furnace, and a discharge plate for discharging is also provided on one side of the insulation furnace body.

[0011] Preferably, a cooling port is provided below the heat-insulating furnace body, paddles are rotatably connected between the inner walls on both sides of the cooling port, and a driving source for driving the paddles is also installed on one side of the cooling port at the bottom of the heat-insulating furnace body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The glass vacuum furnace with heating components is provided with a heat-insulating furnace body, a melting furnace and a control device. Compared with the traditional glass vacuum furnace, during use, the device has multiple annular grooves arranged inside the melting furnace, and a copper tube is fixed on the inner wall of each annular groove, which improves the heat conduction efficiency and makes the heating more uniform. The copper tubes are interconnected to form a complete heating system, and the melting furnace is provided with heat-conducting protrusions connected to the copper tubes. These protrusions can increase the heat distribution area, further improve the heating efficiency, and will not affect the flow of glass liquid.

[0014] At the same time, a ceramic-wrapped induction rod is fixedly connected to the bottom of the insulation furnace body to protect the induction rod from working normally in a high temperature environment and avoid direct contact with the glass raw materials, ensuring the stability and safety of heating. Compared with traditional devices, this glass vacuum furnace with a heating component has higher heating efficiency, better heating uniformity, easier operation and control, and can improve product processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a glass vacuum furnace of the utility model;

[0016] Figure 2 It is a schematic diagram of the furnace structure of a glass vacuum furnace with a heating component of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a control device for a glass vacuum furnace with a heating component according to the utility model;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of a glass vacuum furnace with a heating component of the utility model;

[0019] Figure 5 The utility model is a schematic structural diagram of the bottom perspective of the glass vacuum furnace with a heating component.

[0020] Figure 6 It is a schematic diagram of the bottom structure of the heating component of the glass vacuum furnace of the utility model.

[0021] In the figure: 1. Insulating furnace body; 2. Furnace; 3. Feed pipe; 4. Discharge plate; 5. Cooling port; 6. Connecting shaft; 7. Electromagnetic coil; 8. Track; 9. Slider; 10. Power supply module; 11. Threaded rod; 12. Motor; 13. Through hole; 14. Ring groove; 15. Heat-conducting protrusion; 16. Slide; 17. Induction rod; 18. Paddle; 19. Driving source. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] During the melting process of quartz glass, as the melting temperature increases and the melting time increases, the viscosity of the glass liquid gradually decreases. The gas and liquid inclusions, structural water, and hydroxyl groups remaining in the high-purity quartz sand powder slowly form tiny bubbles during the melting process and gradually grow larger, and finally escape from the glass liquid. Since the melting process is accompanied by the volatilization of SiO2, the melting time and melting temperature need to be controlled to a certain extent to reduce the loss of raw materials. In addition, the glass liquid still has a certain viscosity at high temperatures. Some tiny bubbles are difficult to overcome the viscosity resistance of the glass liquid. They will remain or dissolve in the transparent glass liquid in the later stage of homogenization, and finally exist in the form of hydroxyl groups in quartz glass products. High temperature and high vacuum are usually used to remove hydroxyl groups.

[0024] like Figure 1 - Figure 5As shown, the utility model provides a technical solution: a glass vacuum furnace with a heating component, including a heat-insulating furnace body 1, a furnace 2 is arranged inside the heat-insulating furnace body 1, and the furnace 2 adopts a full ceramic furnace body design to ensure stability and durability under high temperature. A plurality of annular grooves 14 are opened inside the furnace 2, and a copper tube is fixed on the inner wall of each annular groove 14. This design can improve the heat conduction efficiency and make the heating more uniform. Each copper tube is interconnected to form a complete heating system, one of which is connected to the induction rod 17. After the induction rod 17 is heated by the electromagnetic coil 7, the heat can be quickly conducted to accelerate the melting of the glass in the furnace. The furnace 2 is also provided with heat-conducting protrusions 15 connected to the copper tubes. These protrusions can increase the heat distribution area and further improve the heating efficiency.

[0025] A feeding pipe 3 is arranged on the top of the insulation furnace body 1, and the feeding pipe 3 is directly opposite to the top of the melting furnace 2, which is convenient for adding glass raw materials. A unloading plate 4 is also arranged on one side of the insulation furnace body 1 for taking out the finished glass liquid. A through hole 13 is opened at the bottom of the melting furnace 2, and a connecting shaft 6 is fixed on the inner wall of the through hole 13. A driving member is arranged outside the insulation furnace body 1 for braking the connecting shaft 6 to drive the melting furnace 2 to perform unloading action. The driving member can be an engine, etc.

[0026] Two induction rods 17 are fixedly connected to the bottom of the furnace 2. The induction rods 17 extend upward to the inside of the furnace 2. The induction rods 17 located inside the furnace 2 are wrapped by ceramics. This design can protect the induction rods 17 from working normally in a high temperature environment and avoid direct contact with the glass raw materials, thereby ensuring the stability and safety of heating. The axes of the induction rods 17 and the electromagnetic coil 7 are on the same axis. This design can ensure that the magnetic field generated by the electromagnetic coil 7 is in the same direction as the axis of the induction rod 17, thereby further improving the heating efficiency.

[0027] The control device includes a track 8 fixed to the outside of the heat preservation furnace body 1, and a slider 9 is slidably connected to the middle of the track 8. This design enables the electromagnetic coil 7 to move up and down along the track 8 outside the heat preservation furnace body 1. A threaded rod 11 is rotatably connected between the top and bottom of the track 8, and the threaded rod 11 is screwed to the slider 9. A power supply module 10 for supplying energy to the electromagnetic coil 7 is fixed to one side of the slider 9, wherein a motor 12 for driving the threaded rod 11 is also installed on the top of the track 8; this design can realize the precise lifting and lowering of the electromagnetic coil 7 and the automatic control of the power supply module 10.

[0028] A slide groove 16 is provided on one side of the heat preservation furnace body 1, and one end of the electromagnetic coil 7 passes through the slide groove 16 and is connected to the power supply module 10. This design enables the electromagnetic coil 7 to be stably connected to the power supply module 10, and is convenient for installation and maintenance.

[0029] A cooling port 5 is provided below the insulation furnace body 1, and paddles 18 are rotatably connected between the inner walls on both sides of the cooling port 5. This design can draw cold air into the cooling port 5 through the rotation of the paddles 18 to cool the insulation furnace body 1. A driving source 19 for driving the paddles 18 is also installed on one side of the cooling port 5 at the bottom of the insulation furnace body 1. This structural arrangement can quickly discharge the internal hot air when cooling is required in the furnace, thereby further accelerating the cooling speed of the furnace 2.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A glass vacuum furnace with a heating assembly, comprising a heat-insulating furnace body (1), characterized in that: A melting furnace (2) is arranged inside the insulation furnace body (1), a heating electromagnetic coil (7) is arranged below the melting furnace (2), and a control device for controlling the lifting of the electromagnetic coil (7) is arranged outside the insulation furnace body (1); a through hole (13) is opened at the bottom of the melting furnace (2), a connecting shaft (6) is fixedly connected to the inner wall of the through hole (13), the connecting shaft (6) passes through the insulation furnace body (1) and is arranged outside the insulation furnace body (1), the connecting shaft (6) is rotatably connected to the insulation furnace body (1), and a driving member is arranged outside the insulation furnace body (1) for braking the connecting shaft (6) to drive the melting furnace (2) to perform a discharge action; The melting furnace (2) is a fully ceramic furnace body, a plurality of annular grooves (14) are provided in the melting furnace (2), a copper tube is fixed to the inner wall of each annular groove (14), each copper tube is interconnected and one of the copper tubes is connected to the induction rod (17), and a heat-conducting protrusion (15) connected to the copper tube is also provided in the melting furnace (2); A cooling port (5) is provided below the heat-insulating furnace body (1), and paddles (18) are rotatably connected between the inner walls on both sides of the cooling port (5). A driving source (19) for driving the paddles (18) is also installed on one side of the bottom of the heat-insulating furnace body (1) located at the cooling port (5).

2. A glass vacuum furnace with a heating assembly according to claim 1, characterized in that: Two induction rods (17) are fixedly connected to the bottom of the furnace (2), and the induction rods (17) extend upward into the interior of the furnace (2). The induction rods (17) located inside the furnace (2) are wrapped by ceramics, and the axes of the induction rods (17) and the electromagnetic coil (7) are the same axis.

3. A glass vacuum furnace with a heating assembly according to claim 1, characterized in that: The control device comprises a track (8) fixed to the outside of the heat preservation furnace body (1), a slider (9) is slidably connected to the middle of the track (8), a threaded rod (11) is rotatably connected between the top and bottom of the track (8), and the threaded rod (11) is screwed to the slider (9); a power supply module (10) for supplying energy to the electromagnetic coil (7) is fixed to one side of the slider (9), wherein a motor (12) for driving the threaded rod (11) is also installed on the top of the track (8); A slide groove (16) is provided on one side of the heat-insulating furnace body (1), and one end of the electromagnetic coil (7) passes through the slide groove (16) and is connected to the power supply module (10).

4. A glass vacuum furnace with a heating assembly according to claim 1, characterized in that: A feed pipe (3) is arranged on the top of the heat-insulating furnace body (1), and the feed pipe (3) is directly opposite to the top of the melting furnace (2). A discharge plate (4) for discharge is also arranged on one side of the heat-insulating furnace body (1).

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