CN210419707U - Anti-crystallization device for TFT-LCD glass production - Google Patents
Anti-crystallization device for TFT-LCD glass production Download PDFInfo
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- CN210419707U CN210419707U CN201921492971.7U CN201921492971U CN210419707U CN 210419707 U CN210419707 U CN 210419707U CN 201921492971 U CN201921492971 U CN 201921492971U CN 210419707 U CN210419707 U CN 210419707U
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Abstract
The utility model discloses a crystallization prevention device for TFT-LCD glass production, which comprises a high-frequency alternating magnetic field generator arranged on the upper part of a cover plate brick of a mixing tank, wherein the high-frequency alternating magnetic field generator is connected with a high-frequency magnetic field heating control system, the high-frequency magnetic field heating control system controls the high-frequency alternating magnetic field generator, and the high-frequency magnetic field heating control system is connected with commercial power; the glass liquid volatile substances are continuously heated by the platinum stirring rod to keep the glass liquid volatile substances in a gaseous state and escape from the gap of the cover plate brick, so that the devitrification condition is avoided.
Description
Technical Field
The field relates to the technical field of TFT-LCD glass production, in particular to a platinum stirring rod high-frequency magnetic field heating anti-crystallization device for TFT-LCD glass production.
Background
The TFT-LCD glass substrate is used for a display panel, has high requirements on the quality of the glass substrate, and does not have visible requirements on bubbles, stones and stripes. The TFT-LCD glass substrate is alkali-free borosilicate glass, and a platinum channel and a platinum stirring device are required to be added in the production process. And (4) feeding the molten glass into a platinum stirring barrel, and stirring and homogenizing by using a platinum stirring rod. A certain gap exists between the platinum stirring rod and the stirring barrel cover plate brick and the heat insulation cotton, a certain pressure difference exists in the gap, glass liquid volatile matters and platinum steam can escape from the gap, and crystallization is formed due to condensation when the temperature is gradually reduced in the air flow rising process. When crystallization is gathered to a certain degree, the crystallization object can drop into the stirring barrel under the action of gravity and external force of the rotation of the stirring rod, and the dropping object can form defects of bubbles, stones, stripes and the like in the glass liquid, so that the quality of the glass substrate is influenced.
At present, the device is generally adopted to clean the platinum stirring rod to prevent the crystallization from dropping into a platinum stirring barrel and influence the glass quality. Patent No. CN 107021604a of patent (1) uses a steel brush to rub a stirring rod, clean and separate crystals, and uses a dust suction device to suck the separated crystals away. However, in this apparatus, the devitrification cannot be completely cleaned, and in the cleaning process, the devitrification substances easily fall into the stirring barrel, which causes defects to the glass substrate; (2) patent No. CN 207793028U, adopts a heating cavity arranged on the cover plate brick, and the volatile substance of the stirring rod is kept in gaseous state by the heating cavity and is discharged by a suction device. On one hand, in order to avoid friction between the stirring rod and the cover plate brick and generate falling objects to the stirring barrel to influence the quality of glass, a gap is left between the stirring rod and the cover plate brick. However, in the process of air suction, the device accelerates the flow of peripheral gas, and cold air outside the stirring barrel enters the stirring barrel from a gap between the cover plate brick and the stirring rod, so that the temperature and pressure in the stirring barrel fluctuate. The production process of the glass substrate requires a constant temperature and pressure environment, and if fluctuation exists, the quality of the product is affected. On the other hand, the heating flange is easy to deform under the high-temperature condition for a long time, and can block the platinum stirring rod, so that the normal work is influenced, and the purpose of stirring and homogenizing the glass metal cannot be achieved. Therefore, it is important to solve such problems.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a TFT-LCD glass production is with preventing crystallization device constitutes through being provided with a set of high frequency alternating magnetic field heating device, install on the apron brick, encircle the platinum stirring rod, when glass liquid volatile substance and platinum steam among the platinum agitator escaped to the position of platinum stirring rod and apron brick, the platinum stirring rod continues to heat glass liquid volatile substance, make them keep the gaseous state, and escape from the apron brick space, the emergence of the condition of devitrification has been avoided.
In order to realize the technical scheme, the utility model provides a TFT-LCD glass production is with preventing crystallization device, including installing the high frequency alternating magnetic field generator on the apron brick upper portion of agitator, high frequency alternating magnetic field generator is connected with high frequency magnetic field heating control system, by high frequency magnetic field heating control system controls high frequency alternating magnetic field generator, high frequency magnetic field heating control system inserts the commercial power.
The further improvement lies in that: the high-frequency alternating magnetic field generators are arranged in a group and are arranged on the upper part of the cover plate brick through stirring rod supports and fixing supports; the stirring rod is a platinum stirring rod.
The further improvement lies in that: the high-frequency magnetic field heating control system is composed of an industrial personal computer, a PLC and a frequency converter, wherein the industrial personal computer sends out an instruction to the frequency converter through the PLC, and the frequency converter sends out high-frequency alternating current to the high-frequency alternating magnetic field generator so as to change a magnetic field.
The further improvement lies in that: and a gap is reserved between the stirring rod and the cover plate brick of the stirring barrel.
The utility model has the advantages that: (1) the utility model prevents the platinum stirring rod from generating crystallization; (2) the utility model ensures that the temperature and the pressure in the platinum stirring barrel are constant; (3) the utility model discloses do not influence platinum stirring rod and normally work.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1-cover plate brick, 2-high frequency alternating magnetic field generator, 3-stirring rod, 4-commercial power, 5-stirring rod support, 6-fixed support, 7-industrial personal computer, 8-PLC and 9-frequency converter.
Detailed Description
In order to deepen the understanding of the present invention, the following embodiments will be combined to make the present invention do further details, and the present embodiment is only used for explaining the present invention, and does not constitute the limitation of the protection scope of the present invention.
According to fig. 1, this embodiment provides a TFT-LCD glass production is with preventing crystallization device, including installing the high frequency alternating magnetic field generator 2 on the apron brick 1 upper portion of agitator, high frequency alternating magnetic field generator 2 encircles around stirring rod 3, stirring rod 3 is located the middle part of apron brick 1, high frequency alternating magnetic field generator 2 is connected with high frequency magnetic field heating control system, by high frequency magnetic field heating control system control high frequency alternating magnetic field generator 2, high frequency magnetic field heating control system inserts commercial power 4. The high-frequency alternating magnetic field generators 2 are arranged in a group and are arranged on the upper part of the cover plate brick 1 through stirring rod brackets 5 and fixing brackets 6; the stirring rod 3 is a platinum stirring rod. The high-frequency magnetic field heating control system is composed of an industrial personal computer 7, a PLC8 and a frequency converter 9, wherein the industrial personal computer 7 gives an instruction to the frequency converter 9 through a PLC8, and then the frequency converter 9 sends out high-frequency alternating current to the high-frequency alternating magnetic field generator 2 so as to change a magnetic field. And a gap is reserved between the stirring rod 3 and the cover plate brick 1 of the stirring barrel.
By utilizing the electromagnetic induction phenomenon, when the 220V commercial power is accessed, the industrial personal computer 7 sends an instruction through the PLC, the frequency converter 9 sends out high-frequency alternating current, the high-frequency alternating magnetic field generator 2 generates a magnetic field with continuously changed direction, and according to the law of Faraday's electromagnetic induction, the conductor (platinum stirring rod) in the alternating magnetic field moves in an internal carrier manner, so that the conductor is heated, and the heating is realized. In the high temperature state, platinum is a conductor. The high-frequency alternating magnetic field generator 2 generates an alternating magnetic field, an induced eddy current is formed on the platinum stirring rod 3, the eddy current flows through the platinum stirring rod 3 to generate heat, and volatilized gas can be prevented from being condensed on the platinum stirring rod to form crystallization.
When glass liquid volatile matters and platinum steam in the platinum stirring barrel escape to the positions of the platinum stirring rod 3 and the cover plate brick 1, the platinum stirring rod 3 continuously heats the glass liquid volatile matters to keep the glass liquid volatile matters in a gaseous state and escape from a gap of the cover plate brick 1, so that the occurrence of a crystallization condition is avoided.
The platinum stirring rod 3 is continuously heated, so that the temperature and the pressure in the platinum stirring barrel can be kept constant. The process only heats the platinum stirring rod, the structure is simple, and no other object hinders the rotation of the platinum stirring rod in the heating process.
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 above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A crystallization prevention device for TFT-LCD glass production is characterized in that: including high-frequency alternating magnetic field generator (2) of installing apron brick (1) upper portion at the agitator, high-frequency alternating magnetic field generator (2) encircle around stirring rod (3), stirring rod (3) are located the middle part of apron brick (1), high-frequency alternating magnetic field generator (2) are connected with high-frequency magnetic field heating control system, by high-frequency magnetic field heating control system control high-frequency alternating magnetic field generator (2), high-frequency magnetic field heating control system inserts commercial power (4).
2. The devitrification prevention device for TFT-LCD glass production according to claim 1, wherein: the high-frequency alternating magnetic field generators (2) are arranged in a group and are arranged on the upper part of the cover plate brick (1) through stirring rod supports (5) and fixing supports (6); the stirring rod (3) is a platinum stirring rod.
3. The devitrification prevention device for TFT-LCD glass production according to claim 1, wherein: the high-frequency magnetic field heating control system is composed of an industrial personal computer (7), a PLC (8) and a frequency converter (9), wherein the industrial personal computer (7) gives an instruction to the frequency converter (9) through the PLC (8), and then the frequency converter (9) sends high-frequency alternating current to the high-frequency alternating magnetic field generator (2) so as to change a magnetic field.
4. The devitrification prevention device for TFT-LCD glass production according to claim 1, wherein: and a gap is reserved between the stirring rod (3) and the cover plate brick (1) of the stirring barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921492971.7U CN210419707U (en) | 2019-09-09 | 2019-09-09 | Anti-crystallization device for TFT-LCD glass production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921492971.7U CN210419707U (en) | 2019-09-09 | 2019-09-09 | Anti-crystallization device for TFT-LCD glass production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210419707U true CN210419707U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921492971.7U Active CN210419707U (en) | 2019-09-09 | 2019-09-09 | Anti-crystallization device for TFT-LCD glass production |
Country Status (1)
| Country | Link |
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| CN (1) | CN210419707U (en) |
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2019
- 2019-09-09 CN CN201921492971.7U patent/CN210419707U/en active Active
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