CN220550104U - Heater for glass substrate shaping furnace - Google Patents

Abstract

The present disclosure relates to a heater for a glass substrate shaping furnace, the heater includes insulating brick and bear the silicon carbide rod on the insulating brick, and the silicon carbide rod is constructed to U type structure, and includes: the heating section is positioned at the converging tip part of the overflow brick and horizontally extends along the direction vertical to the converging tip; and a side section extending from both ends of the heating section toward a direction away from the confluence point. The heating section of the U-shaped structure horizontally extends along the direction perpendicular to the converging tip so as to heat the converging tip in a high power mode, thereby greatly reducing the generation of cool glass at the converging tip and improving the melting efficiency of the cool glass and the yield of the glass substrate. Meanwhile, the risk of damage to workers and equipment caused by heating of the confluence point by the heating wire in the related technology is effectively avoided, the high-temperature flushing frequency of the equipment is reduced, the technical requirements on the workers when the heater is replaced and installed are reduced, and the installation efficiency of the heater is improved.

Description

Heater for glass substrate shaping furnace

Technical Field

The present disclosure relates to the technical field of glass substrate manufacturing, and in particular, to a heater for a glass substrate shaping furnace.

Background

In the shaping production of high temperature glass liquid, when glass liquid flows through the sharp tip that converges of muffle overflow brick, need draw limit machine clamp glass to begin the guide plate production, here overflow condition and the effect of converging of glass liquid are the important factor that can normal stable production, and can cause huge influence to follow-up quality regulation degree of difficulty.

In the related art, a heater is required to be arranged at the sharp corner of the overflow brick so as to avoid cold glass generated at the position of the confluence point and the position close to the confluence point, and the confluence effect of glass liquid is affected. At present, a heater arranged at the position corresponding to the confluence point generally adopts 2 groups of heating wires to control and heat glass liquid in an upper layer and a lower layer, and the total power of the heater cannot exceed 3.5kW due to space limitation of a muffle furnace. When the heater in the muffle furnace works abnormally, when the cooled glass needs to be washed at high temperature, the power of 3.5KW is difficult to reach the heating requirement of the heater, and the heating wire is heated easily in a high-temperature environment, so that the heater can pop up the mullite groove and be fused with the short circuit of the furnace wall, and the service life of the heater is shortened. Meanwhile, the cool glass oozing out of the muffle furnace is easy to accumulate at the edge of the heater, and when the muffle furnace or the overflow brick is in maintenance demand, potential safety hazards exist in personnel and equipment in the operation process, so that the maintenance difficulty of the muffle furnace and the overflow brick is increased.

Disclosure of Invention

An object of the present disclosure is to provide a heater for a glass substrate shaping furnace, which can solve, at least in part, technical problems existing in the related art.

In order to achieve the above object, the present disclosure provides a heater for a glass substrate shaping furnace, the heater including a heat insulating brick and a silicon carbide rod carried on the heat insulating brick, the silicon carbide rod being constructed in a U-shaped structure, and comprising:

the heating section is positioned at the confluence tip part of the overflow brick and horizontally extends along the direction perpendicular to the confluence tip; and

and a side section extending from both ends of the heating section in a direction away from the confluence point.

Optionally, the insulating brick includes along overflow brick height direction interval sets up roof and diapire, the silicon carbide rod is born at least partially on the diapire, the roof with be formed with between the diapire be used for partly holding the cavity of silicon carbide rod.

Optionally, a first avoidance portion is formed on a side of the bottom wall, which is close to the overflow brick, an inner contour of the first avoidance portion is configured into a shape like a Chinese character 'ji' with an opening facing the converging tip, the converging tip portion extends into the shape like a Chinese character 'ji', and the shape like a Chinese character 'ji' can enable the heating section to be at most partially exposed.

Optionally, a second avoidance portion that is avoided downwards is formed at a position of the bottom wall corresponding to the heating section.

Optionally, the top wall is recessed toward a direction away from the converging tip through a side close to the converging tip so as to form a third avoidance portion, and the third avoidance portion is configured so that at least part of the side section is exposed.

Optionally, the roof be located third dodges portion department lid and is equipped with the heat preservation apron, the heat preservation apron is close to the one side of converging the point is formed with fourth dodges portion, fourth dodges portion structure for the opening orientation converging the second few style of calligraphy structures of point.

Optionally, the side section is partially extended out of the insulating brick towards a direction away from the overflow brick, and the heater further comprises a jointing clamp arranged on the side section and used for being connected with an external wiring.

Optionally, the insulating brick includes corresponding the heating section is close to the first heat preservation portion that the overflow brick set up, and connect the second heat preservation portion of first heat preservation portion be in deviating from overflow brick one side, first heat preservation portion is made by mullite material.

Optionally, the heater further comprises a connection assembly for detachably connecting the first insulation part and the second insulation part.

Optionally, the heater further comprises a fixing plate, wherein the fixing plate is attached between the insulating brick and two opposite side surfaces of the furnace wall of the shaping furnace, so that the insulating brick is fixed on the shaping furnace, and a through hole for the side section to extend out is formed in the fixing plate.

Through above-mentioned technical scheme, when using the heater that this disclosure provided, with the insulating brick setting in glass substrate design stove, the silicon carbide rod setting that will be constructed to U type structure bears on the insulating brick for the heating section of U type structure is along the direction horizontal extension that the perpendicular to converged the point, so as to can carry out high-power heating to converged the point, thereby reduced the production of converging sharp department cool glass greatly, improved cool glass's melting efficiency and glass substrate's yields. Meanwhile, the risk of damage to workers and equipment caused by heating of the confluence point by the heating wire in the related technology is effectively avoided, the high-temperature flushing frequency of the equipment is reduced, the technical requirements on the workers when the heater is replaced and installed are reduced, and the installation efficiency of the heater is improved.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

fig. 1 is a sectional view showing a use state of a heater for a glass substrate shaping furnace according to an exemplary embodiment of the present disclosure;

fig. 2 is a sectional view showing a use state of a heater for a glass substrate shaping furnace according to another exemplary embodiment of the present disclosure;

fig. 3 is a partial schematic view of a heater for a glass substrate shaping furnace according to an exemplary embodiment of the present disclosure.

Description of the reference numerals

100-silicon carbide rod; 110-a heating section; 120-side sections; 200-insulating bricks; 201-a first heat retaining portion; 202-a second heat preservation part; 203-a third insulation part; 210-a cavity; 220-top wall; 221-a third avoidance portion; 222-a first card slot; 230-a bottom wall; 231-a first avoidance portion; 232-a second avoidance portion; 300-heat preservation cover plate; 310-fourth avoidance portion; 410-a jointing clamp; 411-first bolt; 420-aluminizing layer; 500-a connection assembly; 510-a second bolt; 520-lock nut; 530-a second card slot; 600-fixing plate; 610-vias; 620-an insulating plate; 700-overflow bricks; 710—confluence point.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In the present disclosure, unless otherwise indicated, terms of orientation such as "inner" and "outer" are used with respect to the outline of the corresponding component itself; the azimuth words such as "up", "down", "top", "bottom", "horizontal" and "vertical" are defined based on the usage habit of the heater provided by the present disclosure, specifically, referring to the directions of the drawing plane shown in fig. 1 and 2, the sides pointed by the Z arrows are the upper and the top, and vice versa, and in addition, the Z direction refers to the height direction of the insulating brick, the X direction refers to the width direction of the insulating brick, and the Y direction refers to the length direction of the insulating brick; the X and Y directions refer to the horizontal direction, and the Z direction refers to the vertical direction. The terms such as "first," "second," and the like, as used in this disclosure, are used for distinguishing one element from another and not necessarily for order or importance. Furthermore, the following description, when taken in conjunction with the accompanying drawings, like reference numerals designate the same or similar elements in different drawings.

Referring to fig. 1-3, the present disclosure provides a heater for a glass substrate shaping furnace, which may include a silicon carbide rod 100 and a insulating brick 200. The silicon carbide rod 100 may be carried on the insulating brick 200, so that the silicon carbide rod 100 installed in the glass substrate shaping furnace through the insulating brick 200 is configured into a U-shaped structure, the U-shaped structure may include a heating section 110 and a side section 120, specifically, one side of the U-shaped structure opposite to the opening may be formed into the heating section 110, and two sides of the opening may be formed into the side section 120. The heating section 110 may be located at the end of the confluence tip 710 of the overflow brick 700 to heat the end of the confluence tip 710, thereby avoiding the generation of cool glass or melting cool glass, in the present disclosure, the heating section 110 may extend horizontally along a direction perpendicular to the confluence tip 710, so as to effectively increase the heating area of the silicon carbide rod 100 to the end of the confluence tip 710, thereby increasing the baking effect of the heater to the confluence tip 710 and increasing the melting efficiency of cool glass. The side sections 120 may extend from two ends of the heating section 110 toward a direction away from the confluence point 710, i.e., Y-direction, so as to stably support the silicon carbide rod 100 on the insulating brick 200, thereby improving the stability of installation of the silicon carbide rod 100 and reducing the difficulty of installation of the heating portion (i.e., the silicon carbide rod 100) of the heater. According to the embodiment provided by the disclosure, the furnace wall of the glass substrate shaping furnace can be provided with the slot extending along the Y direction for the heat insulation brick 200 to pass through, and the distance between the heater and the overflow brick 700 can be integrally adjusted according to the heating requirement of the overflow brick 700 by moving the heat insulation brick 200 along the slot, so that the position of the heating section 110 is controlled. Through the arrangement of the slots, the heater is wholly detachable in a plugging manner.

Through the above technical scheme, when the heater provided by the disclosure is used, the insulating brick 200 is arranged in the glass substrate shaping furnace, the silicon carbide rod 100 with the U-shaped structure is arranged and loaded on the insulating brick 200, and the heating section 110 with the U-shaped structure horizontally extends along the direction vertical to the confluence point 710, so that the confluence point 710 can be heated in a high power manner, thereby greatly reducing the generation of cold glass at the confluence point 710, and improving the melting efficiency of the cold glass and the yield of the glass substrate. Meanwhile, the risk of damage to workers and equipment caused by heating the confluence point 710 by adopting the heating wire in the related technology is effectively avoided, the high-temperature flushing frequency of the equipment is reduced, the technical requirements on the workers when the heater is replaced and installed are reduced, and the installation efficiency of the heater is improved.

Referring to fig. 1 and 2, insulating brick 200 may include a cavity 210 and a top wall 220 and a bottom wall 230. The top wall 220 and the bottom wall 230 may be disposed at intervals along the height direction of the overflow brick 700, and the silicon carbide rod 100 may be at least partially supported on the bottom wall 230, so that the silicon carbide rod 100 may not have a smaller baking area while ensuring the supporting stability of the silicon carbide rod 100. A cavity 210 for partially accommodating the silicon carbide rod 100 can be formed between the top wall 220 and the bottom wall 230, so that on one hand, the reliability of the installation position of the silicon carbide rod 100 is further improved, and on the other hand, a good heat insulation effect can be achieved on the silicon carbide rod 100. According to some embodiments provided by the present disclosure, the inner profile of the cavity 210 may be configured into a groove structure matched with the supported portion of the silicon carbide rod 100, so as to avoid the offset found in the use process of the silicon carbide rod 100, further ensure the stability of the installation position of the silicon carbide rod 100, increase the contact area between the insulating brick 200 and the supported portion of the silicon carbide rod 100, and further improve the ensuring effect on the silicon carbide rod 100 on the basis of not reducing the baking area of the silicon carbide rod 100.

Further, referring to fig. 1 and 2, a first avoidance portion 231 is formed on a side of the bottom wall 230, which is close to the overflow brick 700, an inner contour of the first avoidance portion 231 is configured into a shape like a Chinese character 'ji' with an opening facing the converging tip 710, and the converging tip 710 can partially extend into the shape like a Chinese character 'ji', so that the converging tip 710 can be closer to the heating section 110, and the insulating brick 200 at the first avoidance portion 231 can also perform a certain insulating function on the converging tip 710, thereby further avoiding the generation of cool glass. The several-shaped structure can make the heating section 110 at most partially exposed, so as to increase the baking area of the heating section 110 on the confluence tip 710 and improve the baking effect on the confluence tip 710.

Referring to fig. 2, a second avoidance portion 232 may be formed at a position of the bottom wall 230 corresponding to the heating section 110 to further increase the exposed portion of the silicon carbide rod 100 and expand the baking and heat insulation area of other positions of the overflow brick 700 such as the confluence point 710.

Referring to fig. 1 and 2, the top wall 220 is recessed toward a direction away from the confluence point 710 through a side near the confluence point 710 to form a third escape portion 221, and the third escape portion 221 is configured to enable at least a portion of the side section 120 to be exposed, thereby further increasing a baking area of the silicon carbide rod 100 while ensuring mounting stability of the silicon carbide rod 100. Meanwhile, as the side section 120 is partially exposed, the inner side walls of the side section 120, the third avoiding part 221 and the heating section 110 can form a glass liquid channel, so that part of cool glass on the overflow brick 700 can overflow according to a designed route and be cleaned manually, and the cool glass formed on the side surface of the overflow brick 700, which is close to the heater, is prevented from dripping on the heat-insulating brick 200 after being melted, so that the safety of the use process of the heater is improved, and the maintenance time of workers on the heater is shortened.

Referring to fig. 1 and 2, the top wall 220 at the third avoiding portion 221 may be covered with a heat insulation cover plate 300, so as to improve the heat insulation effect of silicon on the silicon carbide rod 100 and protect the silicon carbide rod 100 to a certain extent. According to some embodiments provided by the present disclosure, the insulating cover 300 may be formed of a silicon carbon plate, so that the insulating cover 300 can also play a role of heat conduction while ensuring an insulating effect on the silicon carbon rod 100, thereby being capable of baking the overflow brick 700 upward, melting cool glass and further avoiding the generation of cool glass. In the embodiment provided by the present disclosure, the third avoidance portion 221 may be formed with an extension portion protruding toward a direction close to the overflow brick 700 at both sides of the X direction, and a first clamping groove 222 may be formed on a top surface of the extension portion, and the first clamping groove 222 may be used to support the insulation cover 300 upward, so as to ensure stability of installation of the insulation cover 300. Meanwhile, in the Y direction and the Z direction, the width of the first clamping groove 222 may be matched with the width of the heat insulation cover plate 300, and the depth of the first clamping groove 222 may be matched with the thickness of the heat insulation cover plate 300, so that the first clamping groove 222 may have a good limiting effect on the heat insulation cover plate 300, thereby further improving the stability of the heat insulation cover plate 300 and improving the integrity of the heater. The side of the heat insulation cover plate 300, which is close to the confluence point 710, may be formed with a fourth avoidance portion 310, and the fourth avoidance portion 310 may be configured as a second rectangular structure with an opening facing the confluence point 710, so that the melted cool glass on the side surface of the overflow brick 700 may be avoided, and the safety of the heater in the use process may be improved.

Referring to fig. 1 and 2, the side section 120 partially protrudes from the insulating brick 200 in a direction away from the overflow brick 700, and the heater further includes a jointing clamp 410, and the jointing clamp 410 may be provided on the side section 120 (i.e., the portion of the side section 120 protruding from the insulating brick 200) for the jointing clamp 410 connected to an external wiring, so that the silicon carbide rod 100 can be heated after the jointing clamp 410 is energized. In the present disclosure, the jointing clamp 410 may be detachably sleeved on the side section 120 through the first bolt 411, so that the position of the jointing clamp 410 is conveniently adjusted by a worker while the connection effect is ensured, or the jointing clamp 410 and the side section 120 are conveniently overhauled and maintained by the worker. According to some embodiments provided by the present disclosure, an aluminized layer may be disposed on an outer peripheral wall of the side section 120 at the corresponding clip 410, and the aluminized layer may be an aluminized coating directly coated on an outer side wall of the side section 120, so that contact between the silicon carbide rod 100 and the clip 410 can be increased, resistance is reduced, and heating effect of the silicon carbide rod 100 is improved.

Referring to fig. 1 and 2, the insulating brick 200 may include a first insulating portion 201 and a second insulating portion 202. The first heat preservation portion 201 may be disposed near the overflow brick 700 corresponding to the heating section 110, and the second heat preservation portion 202 may be connected to a side of the first heat preservation portion 201 facing away from the overflow brick 700. According to some embodiments provided by the present disclosure, the first heat-preserving portion 201 may be made of mullite material, and the second heat-preserving portion 202 may be made of other heat-preserving materials with lower cost, for example, ceramic fiber materials, so that the production cost of the heat-preserving brick 200 can be reduced while the heat-preserving effect of the heat-preserving brick 200 on the heating section 110 is ensured. When the first, second, and third avoidance portions 231, 232, and 221 are formed on the insulating brick 200, the first, second, and third avoidance portions 231, 232, and 221 may be formed at the first insulating portion 201. According to some embodiments provided by the present disclosure, the insulating brick 200 may further include two third insulating parts 203 attached to both sides of the first insulating part 201 and the second insulating part 202 along the X direction, and the third insulating parts 203 may be formed of ceramic fiber boards, so that the insulating effect of the insulating brick 200 may be further improved.

Referring to fig. 1 and 2, the heater further includes a connection assembly 500 for detachably connecting the first insulation part 201 and the second insulation part 202, so as to facilitate the repair and maintenance of the insulating brick 200 and the silicon carbide rod 100 by a worker. The connection assembly 500 may include a second bolt 510 and a lock nut 520 and a second clamping groove 530. The second clamping groove 530 may be formed on the first heat insulation portion 201, the first end of the second bolt 510 may extend into the second clamping groove 530 after passing through the second heat insulation portion 202 along the Y direction, the second end extends out of the second heat insulation portion 202, and the lock nut 520 may be screwed on the second end and attached to an end surface of the second heat insulation portion 202, thereby stably connecting the first heat insulation portion 201 and the second heat insulation portion 202. In the embodiment provided by the present disclosure, the second clamping groove 530 can also effectively space the second bolt 510 and the silicon carbide rod 100, avoiding the contact short circuit between the second bolt 510 and the silicon carbide rod 100.

Referring to fig. 1 to 3, the heater further includes a fixing plate 600, and the fixing plate 600 may be fitted between two opposite sides of the insulating brick 200 and the wall of the shaping furnace to fix the insulating brick 200 on the shaping furnace, and the fixing plate 600 is provided with a through hole 610 through which the side section 120 protrudes, so that the arrangement of the jointing clamp 410 can be facilitated when the jointing clamp 410 is provided on the side section 120. In the present disclosure, the inner diameter of the via hole 610 is larger than the outer diameter of the side section 120, thereby preventing the fixing plate 600 from contacting the silicon carbide rod 100 and preventing a short circuit from occurring. The side of the fixing plate 600, which is away from the insulating brick 200, may be provided with an insulating plate 620, and the side section 120 may pass through the insulating plate 620 along the Y direction, so as to further avoid electric shock accidents and improve the safety of the heater during use. When the heater has the second bolt 510, the second end of the second bolt 510 may pass through the insulating plate 620, and when the lock nut 520 is screwed to the second end, the side surface of the lock nut may be attached to the insulating plate 620, so as to mount the insulating plate 620 on the fixing plate 600, thereby ensuring the mounting stability of the insulating plate 620 and realizing the detachable connection between the insulating plate 620 and the fixing plate 600. According to some embodiments provided by the present disclosure, positioning holes corresponding to the positions may be formed on the furnace wall of the shaping furnace and the fixing plate 600, and positioning pins pass through the positioning holes to fix the heater.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (10)

1. The utility model provides a heater for glass substrate design stove, its characterized in that, the heater includes insulating brick and bears the silicon carbide rod on the insulating brick, the silicon carbide rod is constructed to U type structure, and includes:

the heating section is positioned at the confluence tip part of the overflow brick and horizontally extends along the direction perpendicular to the confluence tip; and

and a side section extending from both ends of the heating section in a direction away from the confluence point.

2. The heater of claim 1 wherein said insulating brick includes top and bottom walls spaced apart along the height of said overflow brick, said silicon carbide rod being at least partially carried on said bottom wall, a cavity being formed between said top and bottom walls for partially receiving said silicon carbide rod.

3. The heater of claim 2, wherein a first relief is formed in a side of the bottom wall adjacent the overflow brick, an inner contour of the first relief is configured as a figure-like structure opening toward the converging tip, the converging tip portion partially extends into the figure-like structure, and the figure-like structure enables the heating section to be at most partially exposed.

4. A heater according to claim 3, wherein the bottom wall is formed with a second escape portion that escapes downward at a position corresponding to the heating section.

5. A heater according to claim 3, wherein the top wall is recessed away from the converging point through a side thereof to form a third relief portion configured to enable at least partial exposure of the side section.

6. The heater of claim 5, wherein the top wall is covered with a thermal insulation cover plate at the third avoidance portion, a fourth avoidance portion is formed at one side of the thermal insulation cover plate, which is close to the converging tip, and the fourth avoidance portion is configured in a second inverted-V-shaped structure with an opening facing the converging tip.

7. The heater of claim 1 wherein said side sections extend partially beyond said insulating bricks in a direction away from said overflow bricks, said heater further comprising clamps disposed on said side sections for connection to external wiring.

8. The heater of claim 1, wherein the insulating brick comprises a first insulating part corresponding to the heating section and arranged close to the overflow brick, and a second insulating part connected to one side of the first insulating part, which is far away from the overflow brick, and the first insulating part is made of mullite material.

9. The heater of claim 8, further comprising a connection assembly for detachably connecting the first and second insulation portions.

10. The heater of claim 1, further comprising a fixing plate attached between the insulating brick and two opposite sides of the furnace wall of the shaping furnace to fix the insulating brick to the shaping furnace, wherein the fixing plate is provided with a via hole from which the side section extends.