CN111928658A

CN111928658A - High-temperature furnace for simulating electrode erosion experiment

Info

Publication number: CN111928658A
Application number: CN202010820081.5A
Authority: CN
Inventors: 舒众众; 张晓东; 张叶; 冯冠奇; 陈习旬; 刘伟超; 王先辉
Original assignee: Bengbu Zhongguangdian Technology Co Ltd
Current assignee: Bengbu Zhongguangdian Technology Co Ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2020-11-13

Abstract

The invention discloses a high-temperature furnace for simulating electrode erosion experiments, which comprises a hearth, wherein a base is arranged at the bottom of the hearth, a cover plate is arranged at the upper end of the hearth, a bottom plate is connected to the periphery of the lower end of the base through fixing columns, a lifting frame is connected to the middle parts of the base and the bottom plate, an overlapped tower type lifting seat for placing a crucible is arranged on the lifting frame, a vertical cooling device for placing an electrode is arranged in the lifting seat, an upright column is arranged above the hearth, a stirrer is arranged on the upright column, and the stirrer on the stirrer is communicated with the interior of the hearth through a through hole in the middle of the cover plate. The device has the advantages of reasonable structure and high safety, can be quickly lifted, can conveniently stir or feed test materials, can conveniently carry out erosion experiments on the electrodes in the heating and melting process of the molten glass, can well simulate the problems of stock melting and erosion of the electrodes in the production and test process of glass substrates, is favorable for matching and selecting production electrodes, and reduces loss.

Description

High-temperature furnace for simulating electrode erosion experiment

The technical field is as follows:

the invention relates to the technical field of glass substrate smelting furnaces, in particular to a high-temperature furnace for simulating electrode erosion experiments.

Background art:

at present of the rapid development of the liquid crystal display device industry, a production line can be simulated, a glass substrate material side test can be carried out, a substrate glass material side and heating electrode matching selectivity test and the like can be carried out, and a device capable of meeting the test requirements is urgently needed. The high-temperature furnace commonly used in the market generally only controls the furnace body to rapidly heat up, but has little function shortage when needing to treat test materials or carrying out other experiments.

The invention content is as follows:

the invention aims to overcome the defects in the prior art and provides a high-temperature furnace for a simulated electrode erosion experiment.

The application provides the following technical scheme:

a high-temperature furnace for simulating electrode erosion experiments comprises a base, wherein a hearth is arranged on a bottom plate, a cover plate is arranged on the hearth, a stirrer is arranged on a rack above the cover plate, and the stirrer leads to the inside of the hearth through a through hole in the cover plate; there is the bottom plate at the base lower extreme through fixed column connection all around, the base is connected with the crane with the middle part of bottom plate, is equipped with the lift seat on the crane, has placed crucible, its characterized in that on the lift seat: the lifting seat is provided with a placing hole, and the lower end of the lifting seat is connected with an electrode cooling and pushing device correspondingly matched with the placing hole through a flange.

On the basis of the technical scheme, the following further technical scheme can be provided:

and holes distributed corresponding to the placing holes are arranged at the bottom of the crucible.

Electrode cooling pusher include the electrode pole, the cover is equipped with the sealed sleeve pipe in bottom on the electrode pole middle part, is equipped with the end cap that high temperature thermal insulation material made in sleeve pipe upper end, the intercommunication has inlet tube and outlet pipe on the sleeve pipe, still wears to be equipped with on the sleeve pipe and corresponds complex thermocouple with the electrode pole, is fixed with the circular telegram buckle on the electrode pole of sleeve pipe bottom one side.

And the lifting frames on the upper side and the lower side of the lifting seat are respectively provided with a stopper correspondingly matched with the lifting seat.

And the through hole is provided with a correspondingly matched fire-resistant sealing plug.

The invention has the advantages that:

the device has the advantages of reasonable structure and high safety, can be quickly lifted, can conveniently stir or feed test materials, can conveniently carry out erosion experiments on the electrodes in the heating and melting process of the molten glass, can well simulate the problems of stock melting and erosion of the electrodes in the production and test process of glass substrates, is favorable for matching and selecting production electrodes, and reduces loss.

Description of the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of the electrode cooling and pushing device in fig. 1.

The specific implementation mode is as follows:

as shown in figures 1 and 2, the high-temperature furnace for simulating the electrode erosion experiment comprises a base 2, a hearth 1 is fixedly arranged on a bottom plate 2, and a hearth thermocouple 12 and a silicon-molybdenum rod heating element 11 are arranged in the hearth 1.

A cover plate 13 which is correspondingly matched with the upper opening end of the hearth 1 is arranged at the upper opening end of the hearth, a through hole 13a is arranged on the cover plate 13, and a fireproof sealing plug (not shown in the figure) which is correspondingly matched with the through hole 13a is arranged on the through hole 13 a. A stirrer 53 is provided on the frame 5 above the cover plate 13, and the stirrer 53 is inserted into the interior of the furnace 1 through the through hole 13a of the cover plate 13. A stirrer knob 52 for controlling the stirrer 53 to ascend and descend is further arranged at the joint of the stirrer 53 and the frame 5. At the knob 52. And a controller 51 which is matched with the hearth thermocouple 12 and the silicon-molybdenum rod heating element 11 in an electric signal control way is also arranged on the frame 5.

The lower end of the base 2 is connected with a bottom plate 7 through vertically distributed fixing columns 4, the middle parts of the base 2 and the bottom plate 7 are connected with a lifting frame 3, a lifting seat 33 for placing a crucible 36 is installed on the lifting frame 3, and the lifting seat 33 is an overlapped tower type lifting seat. An upper stopper 31 and a lower stopper 32 are respectively arranged at the upper end and the lower end of the lifting frame 3, and when the lifting seat 33 drives the crucible 36 to move to the inside of the hearth 1, the upper stopper 31 just limits the lifting seat 33. A lifting switch 6 which forms electric signal connection and matching with the lifting frame 3 is also arranged on the bottom plate 7.

The bottom of the crucible 36 is provided with a hole 36a, the lifting seat 33 is provided with a placing hole 34, and the lower end of the lifting seat 33 is provided with an electrode cooling and pushing device 35 correspondingly matched with the placing hole 34. The bottom surface of the lifting seat 33 is provided with a connecting flange 33a correspondingly matched with the electrode cooling and pushing device 35.

The electrode cooling and pushing device 35 includes an electrode rod 35a, a sleeve 35b having a sealed bottom is fitted over the middle of the electrode rod 35a, and a plug 35c made of a high-temperature heat insulating material is provided in an opening portion of the upper end of the sleeve 35 b. The upper end of the electrode rod 35a extends out of the plug 35c for a distance.

One side of the lower end of the sleeve 35b is communicated with a water inlet pipe 35d, and the other end is communicated with a water outlet pipe 35 e. So that the cooling water enters and exits the middle of the electrode rod 35a to cool down. A thermocouple 35f correspondingly matched with the electrode rod 35a is further arranged on the pipe wall of the middle lower part of the sleeve 35b in a penetrating way, and the temperature of the electrode rod 35a in the sleeve 35b is monitored through the thermocouple 35 f. An energizing buckle 35h is fixed to the electrode rod 35a on the bottom side of the sleeve 35 b. The thermocouple 35f is a digital display thermocouple. The hollow arrows in FIG. 1 indicate the flow direction of the cooling water

The working process is as follows:

(1) heating the hearth by a controller;

(2) weighing various powder materials according to the component proportion requirement of a glass frit side test, uniformly mixing the powder materials, placing the powder materials into a corundum crucible with a hole at the bottom, placing a glass substrate with the same component as the glass frit side at the bottom of the corundum crucible in advance, covering the reserved hole, and flattening the upper surface of the powder materials in the crucible;

(3) the overlapped tower type lifting seat 33 is lowered to the limiting position of the lower limiting stopper 32, the corundum crucible filled with uniformly mixed powder is firmly placed on the overlapped tower type lifting seat 33, the hole at the bottom of the corundum crucible is over against the cooling device placing hole 34 in the overlapped tower type lifting seat 33, and finally the overlapped tower type lifting seat 33 is raised to the upper limiting stopper 31 to enter the hearth 1;

(4) when the temperature of the hearth rises to 1200-1300 ℃, the refractory sealing plug 13 is taken down, the stirrer 53 is fixed, then the stirrer knob 52 is controlled to slowly descend, when the stirrer 53 slowly descends and does not contact the molten liquid in the corundum crucible 36, a negative value is displayed on the display screen of the controller, when the stirrer descends to just contact the liquid surface, a 0 is displayed on the display screen of the controller, at the moment, the stirrer 53 continuously descends to enable the display screen of the controller to display 1%, the stirring and feeding head is proved to be immersed in the middle position in the liquid, and at the moment, the stirrer 53 starts to stir;

(5) the electrode cooling protective sleeve device 35 is inserted into the cooling device placement hole 34 overlapping the inside of the tower type elevating base 33 such that the stopper 35c is flush with the bottom surface of the crucible 36, and then is fixedly attached by the attachment flange 33 a. Then, cooling water is introduced, when the temperature displayed by a display on the thermocouple 35f is too high and approaches the oxidation temperature of the electrode, the cooling water is proved to be incapable of quickly cooling the electrode, and the water inlet is also suitable for introducing liquid nitrogen to cool the electrode;

(6) according to the requirement of experiment holding time, the glass liquid is continuously stirred and heated, and meanwhile, the cooling water is kept to continuously protect the sleeve 35 b.

(7) After the temperature in the hearth 1 reaches the set high-temperature section and is insulated, the stirrer 53 is lifted, and the feeding head of the stirrer 53 is far away from the glass liquid level for 1-2 min, and then the stirrer is dismounted;

(8) slowly pulling out the electrode cooling protective sleeve device 35 through the cooling device placing hole 34 in the overlapped tower type lifting seat 33, blocking the placing hole 34 and the hole 36a in time, and then removing the glass liquid in the crucible;

(9) and taking out the electrode, weighing and observing, reflecting the erosion of different material prescriptions or different heat preservation times to the electrode through the loss amount of the electrode rod 35a before and after the experiment, and further selecting the electrode which is more matched with the material prescriptions.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A high-temperature furnace for simulating electrode erosion experiments comprises a base (2), wherein a hearth (1) is arranged on a bottom plate (2), a cover plate (13) is arranged on the hearth (1), a stirrer (53) is arranged on a frame above the cover plate (13), and the stirrer (53) is led into the hearth (1) through a through hole (13 a) in the cover plate (13); be connected with bottom plate (7) through fixed column (4) all around at base (2) lower extreme, base (2) are connected with crane (3) with the middle part of bottom plate (7), are equipped with lift seat (33) on crane (3), have placed crucible (36), its characterized in that on lift seat (33): a placing hole (34) is formed in the lifting seat (33), and an electrode cooling and pushing device (35) correspondingly matched with the placing hole (34) is arranged at the lower end of the lifting seat (33).

2. The high-temperature furnace for the simulation electrode erosion experiment as set forth in claim 1, wherein: holes (36 a) distributed corresponding to the placing holes (34) are arranged at the bottom of the crucible (36).

3. The high-temperature furnace for the simulation electrode erosion experiment as set forth in claim 1, wherein: electrode cooling pusher (35) include electrode pole (35 a), the cover is equipped with bottom sealing's sleeve pipe (35 b) on electrode pole (35 a) middle part, be equipped with end cap (35 c) that high temperature insulation material made in sleeve pipe (35 b) upper end, the intercommunication has inlet tube (35 d) and outlet pipe (35 e) on sleeve pipe (35 b), still wear to be equipped with on sleeve pipe (35 b) and correspond complex thermocouple (35 f) with electrode pole (35 a), be fixed with circular telegram buckle (35 h) on electrode pole (35 a) of sleeve pipe (35 b) bottom one side.

4. The high-temperature furnace for the simulation electrode erosion experiment as set forth in claim 1, wherein: the lifting frames (3) at the upper side and the lower side of the lifting seat (33) are respectively provided with a stopper (32) correspondingly matched with the lifting seat (33).

5. The high-temperature furnace for the simulation electrode erosion experiment as set forth in claim 1, wherein: and a correspondingly matched fire-resistant sealing plug is arranged on the through hole (13 a).