CN113415977A - Protection device, heating furnace and deformation prevention method - Google Patents
Protection device, heating furnace and deformation prevention method Download PDFInfo
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- CN113415977A CN113415977A CN202110547724.8A CN202110547724A CN113415977A CN 113415977 A CN113415977 A CN 113415977A CN 202110547724 A CN202110547724 A CN 202110547724A CN 113415977 A CN113415977 A CN 113415977A
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- overflow
- pushing
- overflow brick
- brick
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to the technical field of glass production equipment, in particular to a protection device, a heating furnace and an anti-deformation method. The protection device comprises a detection unit, a control unit and push units (1) which are arranged in pairs, the push units in pairs are kept at intervals and are respectively arranged on two opposite sides of the overflow brick (8) in the width direction, each push unit comprises a push part (2), and the push units in pairs can respectively abut against and tightly push two sides of the overflow brick through the push parts so as to clamp the overflow brick together; the control unit is respectively electrically connected with the detection unit and the paired ejection units and can control the paired ejection units (1) to clamp the overflow bricks in real time through the ejection parts according to the ejection situation of each ejection part and the overflow bricks detected by the detection unit. The protection device controls the paired pushing tops to clamp the overflow bricks in real time through the control unit according to the tight pushing conditions of each pushing top and the overflow bricks detected by the detection unit, and creep deformation of the overflow bricks is favorably slowed down.
Description
Technical Field
The invention relates to the technical field of glass production equipment, in particular to a protection device, a heating furnace and an anti-deformation method.
Background
At present, the photoelectric glass substrate mainly adopts two production modes of an overflow downdraw method and a float method. The specific process for producing the photoelectric glass substrate by adopting the overflow downdraw method comprises the following steps: and (3) enabling molten glass to flow into the overflow brick, slowly overflowing from the brick edges on two sides of the overflow brick to form two-sided glass flow, converging the two-sided glass flow into a piece of glass when the two-sided glass flow flows to the brick tip of the overflow brick, and pulling the glass into a plate through a traction roller so as to obtain the photoelectric glass substrate. The width of the photoelectric glass substrate is mainly determined by the length of the overflow brick, and the longer the overflow brick is, the wider the photoelectric glass substrate is. In order to ensure that the molten glass can flow smoothly in the overflow bricks, the overflow bricks need to be placed in a muffle furnace and heated to a high temperature of 1300 ℃.
However, the overflow brick is easy to creep and deform, the size precision of the overflow brick is changed, the flowing distribution of molten glass in the overflow brick is directly influenced, the thickness of a produced glass substrate is not uniform, and in addition, the overflow brick can even break due to serious deformation, so that the production is stopped, and the production cost is high.
Disclosure of Invention
In view of the above, the invention provides a protection device, a heating furnace and an anti-deformation method, so as to solve the problem that the photoelectric glass substrate in the prior art cannot be produced smoothly due to easy creep deformation of an overflow brick.
In order to achieve the above object, an aspect of the present invention provides a protection device for preventing an overflow brick from being deformed, the protection device including a detection unit, a control unit, and a pair of pushing units, wherein: the paired pushing units are kept at intervals and are respectively arranged on two opposite sides of the overflow brick in the width direction, each pushing unit comprises a pushing part, and the paired pushing units can respectively abut against and tightly push two sides of the overflow brick through the pushing parts so as to clamp the overflow brick together; the detection unit can detect the tight jacking condition between each push top and the overflow brick; the control unit is respectively and electrically connected with the detection unit and the paired ejection units, and the control unit can control the paired ejection units to clamp the overflow bricks through the ejection parts according to the ejection situation detected by the detection unit.
Optionally, the detection unit includes a pressure detector, and the pressure detector can detect the pressure applied by the push top to the overflow brick and can feed back the detected pressure information to the control unit.
Optionally, the control unit is configured to:
comparing the pressure value detected by the pressure detector with a preset range; and
when the pressure value is smaller than the preset range, the push top is controlled to move towards the overflow brick to tightly push the overflow brick, and when the pressure value is larger than the preset range, the push top is controlled to move away from the overflow brick to loosen the overflow brick.
Optionally, the pushing unit comprises a pushing body, and the pushing body is configured to enable the pushing part to perform telescopic motion between the pushing body and the overflow brick, so that the pushing part can push or release the overflow brick tightly.
Optionally, the pushing part is a screw, the pushing unit includes a guide member having a screw hole, the pushing body is configured to drive the screw to perform rotary telescopic motion, and the guide member is screwed to the screw through the screw hole and can guide the screw to perform telescopic motion along the length direction of the screw.
Alternatively, the screws of the pair of the ejector units are arranged opposite to each other and in line.
Optionally, the guard comprises a pair of top members spaced apart and disposed on either side of the overflow brick, each top pushing portion being configured to push against the overflow brick via the corresponding top member.
The invention also provides a heating furnace, which comprises the protection device and comprises a furnace body, wherein the furnace body is provided with a heating cavity so as to be capable of accommodating and heating the overflow bricks, the pushing unit is arranged on the furnace body, and the pushing part can extend into the heating cavity so as to push the overflow bricks tightly.
The third aspect of the present invention provides a deformation preventing method for preventing deformation of an overflow brick by the protecting device, the deformation preventing method comprising:
a. detecting the tight jacking condition between each pushing top and the overflow bricks through the detection unit;
b. and the control unit controls the paired pushing units to clamp the overflow bricks through the pushing parts according to the pushing condition detected by the detection unit.
Optionally, in step a, the detection unit detects a pressure applied by the pushing part to the overflow brick, and in step b, the control unit can control the pushing part according to a comparison result between a pressure value detected by the detection unit and a preset range, wherein: when the pressure value is lower than the preset range, the pushing top is controlled to move towards the overflow brick so as to tightly push the overflow brick; and when the pressure value is higher than the preset range, the pushing top is controlled to move away from the overflow brick so as to loosen the overflow brick.
Through the technical scheme, protector supports and pushes up the both sides of tight overflow brick through the top of pushing away of mated top pushing unit, press from both sides tight overflow brick jointly, and control mated top pushing unit through the tight condition in top between every top pushing portion that the control unit detected and the overflow brick according to the detecting element and press from both sides tight overflow brick in real time through the top pushing portion, so that the overflow brick can keep pressing from both sides tight state through mated pushing unit, be favorable to slowing down the creep deformation of overflow brick, the deformation degree that has showing and reduced overflow brick, the protection demand of overflow brick has been satisfied, the life of overflow brick has been prolonged greatly.
Drawings
FIG. 1 is a schematic structural view of a heating furnace according to the present invention;
fig. 2 is a left side view of the heating furnace shown in fig. 1.
Description of the reference numerals
1. A pushing unit; 2. pushing the top; 3. a mounting frame; 4. a guide member; 5. pushing the main body; 6. a furnace body; 7. a heating cavity; 8. an overflow brick; 9. and a top fastening piece.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Research shows that the overflow brick is usually made of special ceramic high-temperature resistant materials, and creep deformation can occur under the high-temperature condition of a heating furnace (such as a muffle furnace and the like) for a long time, so that the middle part of the brick body of the overflow brick can slowly sink, and the middle part of the brick body is continuously narrowed (namely, the middle part of the brick body is continuously narrowed in the width direction of the brick body); and the longer the brick body is, the larger the deformation is generated, and the more the brick body sinks. As the size of the overflow brick changes due to the creep deformation, the flow distribution of the molten glass in the overflow brick is directly affected, and the thickness of the produced glass substrate is not uniform.
In order to solve the above problems, a first aspect of the present invention provides a protection device, as shown in fig. 1 and 2, for preventing deformation of an overflow brick 8, the protection device comprising a detection unit, a control unit and a pair of pushing units 1, wherein: the paired pushing units 1 are kept at intervals and are respectively arranged at two opposite sides of the overflow brick 8 in the width direction, each pushing unit 1 comprises a pushing part 2, and the paired pushing units 1 can respectively abut against and tightly push two sides of the overflow brick 8 through the pushing parts 2 so as to jointly clamp the overflow brick 8; the detection unit can detect the tight jacking condition between each push top part 2 and the overflow bricks 8; the control unit is respectively electrically connected with the detection unit and the paired ejection units 1, and the control unit can control the paired ejection units 1 to clamp the overflow bricks 8 in real time through the ejection parts 2 according to the ejection situation detected by the detection unit.
Through the technical scheme, protector supports and pushes up the both sides of tight overflow brick 8 through the top of pushing away 2 of paired top pushing unit 1 (for example, a pair of), press from both sides tight overflow brick 8 jointly, and through the tight condition in top between every top of pushing away 2 and the overflow brick 8 that the control unit detected according to the detecting element control paired top pushing unit 1 through top of pushing away 2 real-time tight overflow brick 8, so that overflow brick 8 can keep in the clamping state through paired top of pushing away 1, be favorable to slowing down the creep deformation of overflow brick 8, the deformation degree that has significantly reduced overflow brick 8, the protection demand of overflow brick 8 has been satisfied, the life of overflow brick 8 has been prolonged greatly.
Further, the detection unit comprises a pressure detector, and the pressure detector can detect the pressure applied by the push top part 2 to the overflow brick 8 and can feed back the detected pressure information to the control unit; through adopting pressure detector as detecting element, can acquire the pressure that ejection portion 2 applyed to overflow brick 8 in real time to the control unit controls mated ejection unit 1 and presss from both sides tight overflow brick 8 through ejection portion 2 in real time according to the pressure value that pressure detector detected, regulates and control more swiftly.
Further, the control unit is configured to: comparing the pressure value detected by the pressure detector with a preset range; the pressure value is less than during the predetermined range, control 2 orientation of top of pushing away overflow brick 8 remove with the top tight overflow brick 8 the pressure value is greater than during the predetermined range, control top of pushing away 2 keeps away from overflow brick 8 removes in order to loosen overflow brick 8 to the control unit control overflow brick 8 can receive pushing part 2 to apply the pressure that is in the predetermined range all the time, thereby realized that the mated top of pushing away unit 1 of protector control is exerted quantization adjustable clamping effect to overflow brick 8, guaranteed that overflow brick 8 can be in the more stable clamping state of atress. The control unit may be in various forms, for example, may be a PLC control system, etc.
Research shows that as the service time of the overflow bricks 8 increases, the middle parts of the brick bodies of the overflow bricks 8 sink slowly and become narrow continuously, and the deformation process of the overflow bricks 8 can be divided into two stages, for example, a first stage in which the deformation of the overflow bricks 8 is light and a second stage in which the deformation of the overflow bricks 8 is severe. In order to reasonably protect the overflow bricks 8 against different deformation degrees, the preset range comprises a first preset range suitable for the first stage and a second preset range suitable for the second stage, wherein the first preset range can be x +/-0.4 kN (wherein the value range of x can be 6.5-8.5 kN), and the second preset range can be y +/-0.4 kN (wherein the value range of y can be 6.2-8.2 kN), so that the protection device reasonably controls the paired ejection units 1 to apply a proper clamping effect on the overflow bricks 8 according to the specific deformation degree of the overflow bricks 8, the creep deformation characteristics of the overflow bricks 8 are better met, the overflow bricks 8 can be always in an optimal clamping state, the creep deformation of the overflow bricks 8 is further slowed down, and the service life of the overflow bricks 8 is remarkably prolonged. Wherein, during the use of the overflow bricks 8, the first stage and the second stage can be set in any form, for example, the first stage can be the first year of the use of the overflow bricks 8, and the second stage can be the second year of the use of the overflow bricks 8.
Generally, the creep deformation rate of the overflow bricks is about the same when the overflow bricks are of the same material and dimensional specifications. In order to simplify the overall structure of the protection device, the control unit of the protection device can also control the ejection parts 2 of the pairs of ejection units 1 to eject the overflow bricks according to different preset ranges according to time (for example, the protection device can design the first stage and the second stage according to time), instead of the pressure control mode adopted by the protection device through the arrangement of the pressure detector. At this time, the guard device may be provided in various forms, for example, the control unit of the guard device may be designed with a timing function, or alternatively, the guard device may be additionally provided with a timer which can perform timing and which is electrically connected with the control unit and can feed back the timing result to the control unit.
Further, the ejection unit 1 comprises an ejection main body 5, the ejection main body 5 is arranged to enable the ejection part 2 to stretch and retract between the ejection main body 5 and the overflow brick 8, so that the ejection part 2 can be tightly ejected or the overflow brick 8 can be loosened, the ejection part 2 can be tightly ejected or the overflow brick 8 can be loosened in a stretching and retracting manner, and the operation is more convenient.
According to a specific embodiment of the present invention, the protection device may be configured as a part of a heating furnace, specifically, the heating furnace includes a furnace body 6, the furnace body 6 has a heating cavity 7 to accommodate and heat the overflow bricks 8, the pair of pushing bodies 5 of the pushing unit 1 may be located outside the furnace body 6 and respectively disposed at two opposite sides of the furnace body 6, the two opposite sides of the furnace body 6 are respectively provided with a plurality of mounting holes, each pushing portion 2 is configured to be inserted into the heating cavity 7 from the corresponding mounting hole and tightly push the overflow bricks 8, the pushing unit is used to tightly push or release the overflow bricks 8 in a telescopic motion manner, only the pushing portion 2 is required to be inserted into the heating cavity 7 of the heating furnace, so as to reduce the mounting space required by the pushing unit, and the design is more reasonable. Further, the ejector main body 5 can be assembled outside the furnace body 6 by adopting the mounting frame 3; the mounting frame 3 may be in various forms, for example, a plate or other irregularly shaped support structure.
Further, top of pushing away 2 is the screw rod, top of pushing away unit 1 is including the guide 4 that has the screw, top of pushing away main part 5 sets up to driving the screw rod carries out rotation type concertina movement, guide 4 passes through the screw spiro union in the screw rod and can guide the screw rod is followed the length direction of screw rod carries out concertina movement, prevents that overflow brick 8 from taking place the skew because of mated top of pushing away unit 1's screw rod when flexible, misplacing the condition such as shift each other and shifting to in mated screw rod can be all the time to two particular position application of force of overflow brick 8, thereby guaranteed that protector can press from both sides overflow brick 8 more steadily.
It is worth mentioning that the pushing body 5 can be provided in various forms, for example, the pushing body 5 can be a telescopic motor to facilitate the above-mentioned telescopic movement of the pushing part 2; preferably, the pushing body 5 can also be provided with a telescopic rotating motor (for example, a servo motor with adjustable rotation speed) to drive the pushing top part 2 to perform the above-mentioned rotary telescopic motion.
Further, the screw rods of the pushing unit 1 in pair are opposite to each other and arranged in a collinear manner, so that the paired screw rods can apply force to two specific relative positions of the overflow brick 8 all the time, the overflow brick 8 is guaranteed to be stressed and kept static all the time under the clamping action of the protection device, and smooth production of the photoelectric glass substrate is facilitated.
Further, the protection device comprises a pair of top members 9, the top members 9 are spaced and respectively arranged on two sides of the overflow brick 8, each top pushing portion 2 is arranged to push the overflow brick 8 tightly through the corresponding top members 9, so that the top pushing portion 2 applies pressure to each position on the corresponding side of the overflow brick 8 more uniformly through the corresponding top members 9, the overflow brick 8 is guaranteed to be always kept static under the clamping effect of the protection device, and smooth production of the photoelectric glass substrate is facilitated.
In a second aspect of the present invention, there is provided a heating furnace, as shown in fig. 1 and 2, comprising the protection device, wherein the heating furnace comprises a furnace body 6, the furnace body 6 is provided with a heating cavity 7 to be capable of accommodating and heating the overflow bricks 8, the ejection unit 1 is installed on the furnace body 6, and the ejection part 2 can extend into the heating cavity 7 to tightly eject the overflow bricks 8.
Through the technical scheme, the heating furnace can support and push up the both sides of tight overflow brick 8 through the top-pushing portion 2 of the mated top-pushing unit 1 of protector, press from both sides tight overflow brick 8 jointly, and through the tight condition in top between every top-pushing portion 2 that the control unit detected and the overflow brick 8 according to the detecting element, control mated top-pushing unit 1 and press from both sides tight overflow brick 8 through top-pushing portion 2 in real time, so that overflow brick 8 can keep in the tight state of clamp through mated top-pushing unit 1, be favorable to slowing down the creep deformation of overflow brick 8, the deformation degree of overflow brick 8 has been significantly reduced, the protection demand of overflow brick 8 has been satisfied, the life of overflow brick 8 has been prolonged greatly.
The third aspect of the present invention also provides a deformation preventing method for preventing deformation of the overflow bricks 8 by the protecting device, the deformation preventing method comprising:
a. detecting the tight jacking condition between each push top part 2 and the overflow bricks 8 through the detection unit; further, the detection unit can be a pressure detector so as to detect the pressure applied by the ejection part 2 to the overflow brick 8;
b. controlling the paired pushing units 1 to clamp the overflow bricks 8 in real time through the pushing parts 2 according to the pushing situation detected by the detection unit; further, the control unit can control according to the pressure value that pressure detector detected and preset scope comparison result, wherein: when the pressure value is lower than the preset range, controlling the ejection part 2 to move towards the overflow brick 8 so as to tightly eject the overflow brick 8; and when the pressure value is higher than the preset range, controlling the ejection top 2 to move away from the overflow brick 8 so as to loosen the overflow brick 8.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications may be made to the technical solution of the invention, and in order to avoid unnecessary repetition, various possible combinations of the invention will not be described further. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A protection device, characterized in that, for preventing overflow bricks (8) from deforming, the protection device comprises a detection unit, a control unit and a pair of push units (1), wherein:
the paired pushing units (1) are kept at intervals and are respectively arranged on two opposite sides of the overflow brick (8) in the width direction, each pushing unit (1) comprises a pushing part (2), and the paired pushing units (1) can respectively abut against and tightly push two sides of the overflow brick (8) through the pushing parts (2) so as to clamp the overflow brick (8) together;
the detection unit can detect the tight jacking condition between each push top part (2) and the overflow bricks (8);
the control unit is respectively and electrically connected with the detection unit and the paired ejection units (1), and the control unit can control the paired ejection units (1) to clamp the overflow bricks (8) in real time through the ejection parts (2) according to the ejection situation detected by the detection unit.
2. Protection device according to claim 1, characterized in that said detection unit comprises a pressure probe able to detect the amount of pressure exerted by said push top (2) on said overflow brick (8) and to feed back the detected pressure information to said control unit.
3. The shielding device of claim 2, wherein the control unit is configured to:
comparing the pressure value detected by the pressure detector with a preset range; and
when the pressure value is smaller than the preset range, the push top part (2) is controlled to move towards the overflow brick (8) to tightly push against the overflow brick (8), and when the pressure value is larger than the preset range, the push top part (2) is controlled to move away from the overflow brick (8) to loosen the overflow brick (8).
4. Guard device according to any one of claims 1-3, characterized in that the ejector unit (1) comprises an ejector body (5), which ejector body (5) is arranged to enable a telescopic movement of the ejector part (2) between the ejector body (5) and the overflow brick (8) so that the ejector part (2) can push up or release the overflow brick (8).
5. The protection device according to claim 4, characterized in that the ejector part (2) is a screw, the ejector unit (1) comprises a guide (4) having a threaded hole, the ejector body (5) is arranged to be able to bring the screw into a rotary telescopic motion, the guide (4) is screwed to the screw through the threaded hole and is able to guide the screw into a telescopic motion in the length direction of the screw.
6. Guard according to claim 5, characterized in that the screws of the pairs of ejector units (1) are arranged opposite each other and in line.
7. Guard device according to claim 1, characterized in that it comprises a pair of top members (9), a pair of top members (9) being spaced apart and arranged on each side of the overflow brick (8), each top pushing portion (2) being arranged to push against the overflow brick (8) by means of the respective top member (9).
8. A heating furnace, characterized in that it comprises a shielding device according to any one of claims 1 to 7, said heating furnace comprising a furnace body (6), said furnace body (6) having a heating chamber (7) to be able to receive and heat said overflow bricks (8), said ejection unit (1) being mounted to said furnace body (6) and said ejection portion (2) being able to extend into said heating chamber (7) to eject said overflow bricks (8).
9. A method for preventing deformation of an overflow brick (8) by the protection device according to any one of claims 1 to 7, comprising:
a. detecting the tight jacking condition between each push top part (2) and the overflow bricks (8) through the detection unit;
b. the control unit controls the paired pushing units (1) to clamp the overflow bricks (8) in real time through the pushing parts (2) according to the pushing condition detected by the detection unit.
10. The deformation prevention method according to claim 9, wherein in step a, the magnitude of the pressure applied by the ejection part (2) to the overflow brick (8) is detected by the detection unit, and in step b, the control unit is capable of controlling according to the comparison result of the pressure value detected by the detection unit and a preset range, wherein: when the pressure value is lower than the preset range, the ejection part (2) is controlled to move towards the overflow brick (8) so as to tightly eject the overflow brick (8); when the pressure value is higher than the preset range, the push top part (2) is controlled to move away from the overflow brick (8) so as to loosen the overflow brick (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110547724.8A CN113415977B (en) | 2021-05-19 | 2021-05-19 | Protective device, heating furnace and deformation prevention method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110547724.8A CN113415977B (en) | 2021-05-19 | 2021-05-19 | Protective device, heating furnace and deformation prevention method |
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| CN113415977A true CN113415977A (en) | 2021-09-21 |
| CN113415977B CN113415977B (en) | 2023-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114634293A (en) * | 2022-02-21 | 2022-06-17 | 河北光兴半导体技术有限公司 | Overflow brick mounting device and using method thereof |
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| CN113415977B (en) | 2023-06-09 |
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