CN211352482U - Silicon carbide spiral heating pipe and heating device for overflow downdraw method - Google Patents
Silicon carbide spiral heating pipe and heating device for overflow downdraw method Download PDFInfo
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- CN211352482U CN211352482U CN201922488451.5U CN201922488451U CN211352482U CN 211352482 U CN211352482 U CN 211352482U CN 201922488451 U CN201922488451 U CN 201922488451U CN 211352482 U CN211352482 U CN 211352482U
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- silicon carbide
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Abstract
The utility model discloses a silicon carbide spiral heating pipe and a heating device for an overflow downward pulling method, which comprises a silicon carbide spiral heating rod, an insulating sleeve and a soaking body sleeve; the silicon carbide spiral heating rod penetrates through the through hole to be deep into the soaking body sleeve, and the top of the soaking body sleeve is sealed by the silicon carbide spiral heating rod and the insulating sleeve; the bottom of the soaking body sleeve is provided with a discharge hole. Can form SiO2The silicon carbide is discharged in time to heat the damaged and broken silicon carbide spiralThe device can be taken out and replaced more conveniently. Thereby ensuring the qualified temperature field around the overflow brick and the qualified overflow quality.
Description
Technical Field
The utility model belongs to the glass manufacturing field relates to a carborundum spiral heating pipe and be used for heating device of the excessive flow-down pulling method.
Background
The overflow downward pulling method is seriously dependent on the accurate control of the size of an overflow groove and a space temperature field in the production process, but in the using process of equipment, a heating pipe works in a high-temperature environment, and a silicon carbide spiral heater and a silicon carbide soaking body sleeve are subjected to oxidation reaction to generate SiO in a high-temperature oxidation atmosphere in the high-temperature environment2，SiO2The heater is easy to be retained in the sleeve, difficult to be taken out in the replacement process, and has a larger probability of secondary fracture in the taking-out process, so that the replacement difficulty of the silicon carbide spiral heater is very high, and in an extreme case, the fractured part of the heater body cannot be taken out, and a new silicon carbide spiral heater cannot be installed. Resulting in a reduction in the quality of the overflow. The service life of part of the heaters is difficult to reach the full-life working condition of the whole equipment, the temperature field in the production process is in a state difficult to control, and finally the manufacturing cost of the product is seriously increased or the design requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a carborundum spiral heating pipe and be used for heating device of excessive downward pulling method, can be with the SiO that generates2And the silicon carbide spiral heater is timely discharged, so that the damaged and fractured silicon carbide spiral heater can be conveniently taken out and replaced. Thereby ensuring the qualified temperature field around the overflow brick and the qualified overflow quality.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a silicon carbide spiral heating pipe comprises a silicon carbide spiral heating rod, an insulating sleeve and a soaking body sleeve;
the silicon carbide spiral heating rod penetrates through the through hole to be deep into the soaking body sleeve, and the top of the soaking body sleeve is sealed by the silicon carbide spiral heating rod and the insulating sleeve; the bottom of the soaking body sleeve is provided with a discharge hole.
Preferably, the bottom of the silicon carbide spiral heating rod is arranged in a gap with the bottom of the soaking body sleeve.
Preferably, the diameter of the discharge hole is more than or equal to 5 mm.
Furthermore, the diameter of the discharge hole is less than or equal to 80 percent of the diameter of the silicon carbide spiral heater.
Preferably, the top of the insulator sleeve and the top of the heat spreader sleeve both extend radially outward.
A heating device for an overflow downdraw method comprises an overflow brick, wherein a plurality of silicon carbide spiral heating pipes are adopted and vertically arranged around the overflow brick.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a heating pipe, even take place oxidation reaction and generate SiO through being provided with the discharge hole bottom the soaking body sleeve pipe2And the silicon carbide spiral heater can be timely and automatically discharged, so that the damaged and fractured silicon carbide spiral heater can be conveniently taken out and replaced, and a qualified temperature field and qualified overflow quality of the overflow brick are ensured.
Furthermore, the clearance between the bottom of the silicon carbide spiral heating rod and the bottom of the soaking body sleeve is arranged, so that SiO between the bottom of the silicon carbide spiral heating rod and the bottom of the soaking body sleeve can be prevented2The contact occurs.
Further, the diameter of the discharge hole does not exceed 80% of the diameter of the silicon carbide spiral heater, and the broken silicon carbide spiral heating rod can be prevented from falling out of the discharge hole.
Furthermore, the tops of the insulating sleeve and the soaking body sleeve extend outwards in the radial direction, and are conveniently fixed on the insulating layer.
According to the heating device disclosed by the invention, the silicon carbide spiral heating pipe is vertically arranged around the overflow brick, so that the generated SiO can be generated2Timely and automatic discharge is realized, so that the damaged and fractured silicon carbide spiral heater can be conveniently taken out and replaced, and the qualified temperature field and the qualified overflow quality of the periphery of the overflow brick are ensured.
Drawings
FIG. 1 is a schematic structural view of a silicon carbide spiral heating pipe of the present invention;
FIG. 2 is a schematic side view of the heating device of the present invention;
fig. 3 is a schematic front view of the heating device of the present invention.
Wherein: 1-silicon carbide spiral heating rod; 2-an insulating sleeve; 3-soaking body casing; 4-an insulating layer; 5-overflow brick; 6-silicon carbide spiral heating pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, for silicon carbide spiral heating pipe 6 of the present invention, silicon carbide spiral heating pipe 6 includes silicon carbide spiral heating rod 1, insulating sleeve 2 and soaking body sleeve 3.
Insulating cover 2 sets up at soaking body sleeve pipe 3 top, and insulating cover 2 is provided with the through-hole, and carborundum spiral heating rod 1 passes the through-hole and goes deep into soaking body sleeve pipe 3, and carborundum spiral heating rod 1 bottom sets up with soaking body sleeve pipe 3 bottom clearance, can prevent the SiO of carborundum spiral heating rod 1 bottom and soaking body sleeve pipe 3 bottom2The contact occurs, the silicon carbide spiral heating rod 1 and the insulating sleeve 2 seal the top of the soaking body sleeve 3, and the heat is prevented from being discharged from the top of the soaking body sleeve 3.
The bottom of the soaking body sleeve 3 is provided with a discharge hole, the diameter of the discharge hole is more than or equal to 5mm, the diameter of the discharge hole is less than or equal to 80% of the diameter of the silicon carbide spiral heater, the broken silicon carbide spiral heating rod 1 can be prevented from falling out of the discharge hole, the glass production is influenced, and the broken silicon carbide spiral heater is prevented from being clamped at the discharge hole at the bottom of the soaking body sleeve 3.
The top parts of the insulating sleeve 2 and the soaking body sleeve 3 extend outwards in the radial direction, and are conveniently fixed on the heat insulating layer 4.
Referring to fig. 2 and 3, in order to provide a heating device for an overflow downdraw method, the heating device comprises an overflow brick 5, a silicon carbide spiral heating pipe 6 is vertically arranged around the overflow brick 5, so that the generated SiO can be generated2And the water is automatically discharged in time.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (6)
1. A silicon carbide spiral heating pipe is characterized by comprising a silicon carbide spiral heating rod (1), an insulating sleeve (2) and a soaking body sleeve (3);
the insulating sleeve (2) is arranged at the top of the soaking body sleeve (3), the insulating sleeve (2) is provided with a through hole, the silicon carbide spiral heating rod (1) penetrates through the through hole to be deep into the soaking body sleeve (3), and the silicon carbide spiral heating rod (1) and the insulating sleeve (2) seal the top of the soaking body sleeve (3); the bottom of the soaking body sleeve (3) is provided with a discharge hole.
2. The spiral heating tube of silicon carbide according to claim 1, wherein the bottom of the spiral heating rod of silicon carbide (1) is arranged in a gap with the bottom of the soaking body sleeve (3).
3. The spiral heating tube of claim 1, wherein the diameter of the discharge hole is greater than or equal to 5 mm.
4. The spiral heating tube of claim 3, wherein the diameter of the discharge hole is not more than 80% of the diameter of the spiral heater.
5. A spiral heating tube of silicon carbide according to claim 1, characterized in that the top of the insulating jacket (2) and the top of the soaking body jacket (3) are extended radially outwards.
6. A heating device for an overflow downdraw method, characterized by comprising an overflow brick (5) vertically mounted around the overflow brick (5) by a number of silicon carbide spiral heating tubes (6) according to any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488451.5U CN211352482U (en) | 2019-12-30 | 2019-12-30 | Silicon carbide spiral heating pipe and heating device for overflow downdraw method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488451.5U CN211352482U (en) | 2019-12-30 | 2019-12-30 | Silicon carbide spiral heating pipe and heating device for overflow downdraw method |
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| Publication Number | Publication Date |
|---|---|
| CN211352482U true CN211352482U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922488451.5U Active CN211352482U (en) | 2019-12-30 | 2019-12-30 | Silicon carbide spiral heating pipe and heating device for overflow downdraw method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654343A (en) * | 2021-06-30 | 2021-11-16 | 陕西彩虹工业智能科技有限公司 | Muffle furnace silicon carbide heating system for manufacturing flexible glass and muffle furnace |
-
2019
- 2019-12-30 CN CN201922488451.5U patent/CN211352482U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654343A (en) * | 2021-06-30 | 2021-11-16 | 陕西彩虹工业智能科技有限公司 | Muffle furnace silicon carbide heating system for manufacturing flexible glass and muffle furnace |
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