CN115947532A - Conveying system in float glass sheet preparation process - Google Patents
Conveying system in float glass sheet preparation process Download PDFInfo
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- CN115947532A CN115947532A CN202211051380.2A CN202211051380A CN115947532A CN 115947532 A CN115947532 A CN 115947532A CN 202211051380 A CN202211051380 A CN 202211051380A CN 115947532 A CN115947532 A CN 115947532A
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- glass sheet
- air
- gas
- annealing furnace
- annealing
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- 239000005329 float glass Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000011521 glass Substances 0.000 claims abstract description 50
- 238000000137 annealing Methods 0.000 claims abstract description 44
- 238000005188 flotation Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 54
- 238000007664 blowing Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 239000002918 waste heat Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims 2
- 238000006748 scratching Methods 0.000 abstract description 9
- 230000002393 scratching effect Effects 0.000 abstract description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 239000006060 molten glass Substances 0.000 description 4
- 239000005357 flat glass Substances 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000006124 Pilkington process Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The utility model provides a transmission system in float glass sheet preparation process, it includes air supporting device and carry over pinch rolls strutting arrangement, wherein, air supporting device locates in the annealing stove that is used for preparing float glass sheet, and the gas that blows off through air supporting device makes between glass sheet and the air supporting device form a space, and this space forms the support to glass sheet. The traction roller supporting devices comprise two groups, the two groups of traction roller supporting devices are oppositely arranged on two sides of the annealing furnace, and the traction roller supporting devices on two sides support and pull two sides of the glass sheet through rollers arranged in the annealing furnace and enable the glass sheet to move forwards. The invention avoids or reduces the occurrence rate of scratching accidents of the float glass sheet through the arrangement of the air flotation device.
Description
Technical Field
The disclosure relates to the technical field of float glass sheet preparation, in particular to a transmission system in a float glass sheet preparation process.
Background
The forming process for float glass production is carried out in a tin bath into which protective gases (N2 and H2) are introduced. The molten glass continuously flows into the tank furnace and floats on the surface of molten tin with high relative density, and under the action of gravity and surface tension, the molten glass is spread and flattened on the surface of the molten tin to form a transition roller table with flat upper and lower surfaces, and after the molten glass is hardened and cooled, the molten glass is guided to the transition roller table. The rollers of the roller table rotate to pull the glass sheet strip out of the tin bath and enter an annealing furnace or an annealing kiln, and the flat glass product is obtained after annealing and cutting.
Along with the increase of cover plate glass generation, the size of the corresponding glass plate is also continuously increased, in the production process of large-size ultra-thin float glass, the glass plate enters an annealing furnace (or an annealing kiln) through a transition roller after leaving a tin bath, the two devices in the text refer to the same device and have the same meaning), the area of the annealing furnace produced by the float process is large, the productivity of the glass plate produced by the float process is high, the plate width is large, the glass plate is supported and pulled by hundreds of groups of traction roller rollers in long-time annealing, the traction roller rollers are mostly made of high-temperature-resistant rubber, after the glass plate is broken, tiny glass scraps can be attached to the surfaces of the traction roller, and the traction roller rotating after the normal production is recovered can contact with the glass plate surface to cause scratching and find a specific position causing scratching.
Disclosure of Invention
One technical problem to be solved by the present disclosure is: the conveying system in the float glass sheet preparation process is used for reducing the occurrence rate of scratching unqualified products of finished sheet glass in the float glass sheet preparation process.
In order to solve the above technical problem, an embodiment of the present disclosure provides a conveying system in a float glass sheet manufacturing process, including: an air floating device and a traction roller supporting device, wherein,
the air floatation device is arranged in an annealing furnace for preparing a float glass sheet, and a space is formed between the glass sheet and the air floatation device by the air blown out of the air floatation device and forms a support for the glass sheet;
the traction roller supporting devices comprise two groups, the two groups of traction roller supporting devices are oppositely arranged on two sides of the annealing furnace, and the traction roller supporting devices support and pull the glass sheets to move through rollers arranged in the annealing furnace.
In some embodiments, the air floatation device includes a base platform, a gas conduit, and a first control unit, wherein,
the base station is arranged in the annealing furnace, and the upper surface of the base station is provided with a plurality of air blowing holes which are arranged at intervals;
one end of the gas pipeline is communicated with an external gas supply system, and the other end of the gas pipeline is communicated with the lower part of the base platform;
the first control unit controls the temperature and pressure of the gas blown out from the gas blowing holes.
In some embodiments, the air floatation device further comprises an air pressure box, and the air pressure box is arranged between the base platform and the gas pipeline; the wind pressure box is communicated with the lower part of the base platform and the gas pipeline.
In some embodiments, the wind pressure boxes comprise a plurality of wind pressure boxes which are arranged on one side or two sides of the base platform at intervals.
In some embodiments, the gas pipeline is provided with a gas separating valve, and the supply of different gases can be realized through the gas separating valve.
In some embodiments, the different types of gases include compressed cooling air and kiln waste heat air.
In some embodiments, the first control unit comprises a programmable logic controller, an industrial personal computer, or a programmable logic controller industrial personal computer.
In some embodiments, the pull roll supporting device comprises a plurality of pull roll supporting devices which are arranged at intervals on two sides of the annealing furnace.
In some embodiments, the rollers at the ends of the pull roll support are provided in one or more numbers; the traction roller supporting device comprises a servo motor, and the servo motor is controlled by a programmable logic controller, an industrial personal computer or a programmable logic controller industrial personal computer.
In some embodiments, the annealing furnace further comprises a treatment port, wherein the treatment port is arranged at the position close to the traction roller supporting device on the two sides of the annealing furnace; the disposal port may be opened or closed.
Through the technical scheme, the conveying system in the float glass sheet preparation process has the following advantages:
1. according to the invention, the air floatation device is used as a transmission system for supporting the annealing of the glass sheet, so that the incidence rate of scratching unqualified products of the subsequently prepared glass sheet caused by the broken glass sheet residue left on the surface of the idler wheel of the traction roller is greatly reduced.
2. According to the invention, the treatment opening can be closed during working through the arrangement of the openable treatment opening, and the treatment opening can be opened after the prepared glass is broken, so that glass fragments remained on the surface of the base station or the surface of the roller of the traction roller supporting device are cleaned, and the treatment can also reduce the scratching accidents on the surface of the finished glass. In addition, the disposal openings may also be used to dispose of other problems or conditions within the annealing furnace.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a conveyor system in a float glass sheet manufacturing process according to an embodiment of the disclosure. Description of reference numerals: 10. an annealing furnace; 20. a base station; 21. a gas blowing hole; 30. a treatment port; 40. a pull roll support device; 41. a roller; 50. a gas conduit; 60. and (4) an air pressure box.
Detailed Description
Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are included to illustrate the principles of the disclosure, but are not intended to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but include all technical solutions falling within the scope of the claims.
These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
It is noted that in the description of the present disclosure, unless otherwise indicated, "a plurality" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship merely to facilitate the description of the disclosure and to simplify the description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and therefore should not be construed as limiting the disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
Moreover, the use of "first," "second," and similar terms in this disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but within the tolerance of the error. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered.
It should also be noted that, in the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood as appropriate to one of ordinary skill in the art. When a particular device is described as being between a first device and a second device, intervening devices may or may not be present between the particular device and the first device or the second device.
All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
The annealing furnace, the annealing kiln or the annealing device in the application refer to the same thing, have the same meaning, and are chambers with an annealing function.
As shown in fig. 1, a conveying system in a float glass sheet manufacturing process, comprising: an air flotation device and a pull roll support device 40.
Wherein, the air flotation device is arranged in the annealing furnace 10 for preparing the float glass sheet, and the air blown by the air flotation device forms a space between the glass sheet and the air flotation device, and the space forms a support for the glass sheet.
As shown in fig. 1, in one embodiment, the air floating device comprises a base 20, a gas pipeline 50 and a first control unit, wherein the base 20 is arranged in the annealing furnace 10, the upper surface of the base 20 is provided with a plurality of gas blowing holes 21 which are arranged at intervals, and the support of the glass sheet in a suspended state can be realized through the gas blown from the gas blowing holes 21.
One end of the gas pipeline 50 is communicated with an external gas supply system, the other end of the gas pipeline is communicated with the lower part of the base station 20, gas supplied by the external gas supply system is transmitted to the lower part of the base station 20 through the gas pipeline 50, and then the gas is blown out through the gas blowing holes 21 during work, and wind pressure is formed to realize that the support glass sheet is in a suspension state. The external gas supply system is a relative concept herein referring to the exterior with respect to the gas duct 50.
The first control unit controls the temperature and pressure of the gas blown out from the gas blowing holes 21.
As shown in fig. 1, in an embodiment of the present invention, the air floating device further includes an air pressure tank 60, and the air pressure tank 60 is disposed between the base 20 and the air duct 50. The air pressure box 60 communicates with the lower portion of the base 20 and the air duct 50. In one embodiment, the wind pressure box 60 comprises a plurality of wind pressure boxes 60, and the wind pressure boxes 60 are arranged at intervals on one side or two sides of the base 20.
As shown in fig. 1, the gas pipeline 50 is provided with a gas separating valve, through which different kinds of gas can be supplied. In one embodiment, the different types of gases include compressed cooling air and kiln waste heat air. Therefore, the air inlet of the air pipeline 50 can be switched, and the switching of compressed cooling air or kiln waste heat air is realized. Compressed cooling air or kiln waste heat air is conveyed through a gas pipeline 50, a gas path gas distribution valve (electromagnetic valve) is controlled to be opened and closed by a PLC, an industrial personal computer or the PLC and the industrial personal computer, and air with different temperatures is conveyed to different annealing areas.
In one embodiment, the first control unit includes a Programmable Logic Controller (PLC), an industrial personal computer, or a Programmable Logic Controller (PLC) industrial personal computer.
As shown in FIG. 1, the pull roll supporting means 40 comprises two sets, two sets of pull roll supporting means 40 are oppositely disposed at both sides of the lehr 10, and the pull roll supporting means 40 support and/or pull the glass sheet to move by means of rollers 41 disposed in the lehr 10. In one embodiment, each set of pull roll supports 40 comprises a plurality of pull roll supports 40 spaced on either side of the lehr 10.
As shown in fig. 1, the rollers 41 at the end of each pull roll supporting device 40 are provided in one or more. The carry over pinch rolls support device 40 includes a servo motor controlled by a Programmable Logic Controller (PLC), an industrial personal computer, or a Programmable Logic Controller (PLC).
According to the invention, the surface of the glass sheet is supported by the air flotation device, and the traction roller supporting devices 40 at two ends of the annealing furnace 10 support and pull the glass sheet, so that the glass sheet in the annealing process is in a suspension state, and the occurrence rate of scratching unqualified products caused by the broken glass sheet residue left on the surface of the traction roller in the prior art is greatly reduced. The annealing curve in the annealing furnace 10 is from high to bottom, and simultaneously, the temperature of the air blown out from the air hole 21 of the base 20 is lower than that of the air blown out from the other side, so that a compressive stress is formed on the tin surface of the glass sheet, the middle of the glass sheet is arched, and the scratching risk is avoided.
As shown in FIG. 1, another embodiment of the present invention is a transfer system further comprising a disposal opening 30, wherein the disposal opening 30 is provided at both sides of the annealing furnace 10 near the pull roll supporting means 40. The disposal port 30 may be opened or closed, and the disposal port 30 may be opened to dispose of problems or conditions within the annealing furnace. The treatment opening 30 is closed during work, the treatment opening 30 is opened after the prepared glass is broken, and the glass fragments remained on the surface of the base table 20 or the surface of the roller 41 of the traction roller supporting device are cleaned, so that the scraping and scratching accidents on the surface of the finished glass are reduced.
The working principle or the flow of the invention is as follows:
the middle part of the glass plate is supported by cooling air blown out from the air blowing holes 21 on the surface of the base 20 in the annealing furnace 10 and by waste heat recovery air, and the two sides of the glass plate are driven and supported by the traction roller supporting devices, so that the effect of preventing the middle area of the glass plate from being scratched is achieved. Wherein the gas pipeline 50 is connected with the wind pressure box 60 below the base 20, the wind pressure box 60 can be decomposed into a plurality of independent units according to the actual production requirements, or a plurality of wind pressure boxes 60 are arranged, the purpose of which is to accurately control the wind pressure so as to influence the outlet temperature. Meanwhile, the annealing temperatures of different areas are controlled by a PLC industrial personal computer to open and close an electromagnetic valve (gas distributing valve) on the gas pipeline 50 so as to control the temperature in the annealing furnace.
The two sides of the glass plate are supported by the traction roller supporting device in a driving way, and the middle part of the glass plate is supported by the air blown out from the air blowing holes 21. The roller 41 (roller head) of the driving traction roller supporting device 40 is convenient to replace, the roller 41 of the driving traction roller can use multiple heads or single heads according to actual production requirements, and the disposal opening can be opened to clean glass scraps on the base station 20 and the roller 41 when the glass plate is broken or damaged. The servo motor that every drive carry over pinch rolls strutting arrangement 40 is connected all is controlled by the PLC industrial computer, if servo motor breaks down, PLC reports to the police, detects maintainer and independently maintains or change.
The disposal port is in a closed state during normal production. And the valve is opened when abnormal, and the opening mode is not limited.
The annealing curve in the annealing furnace 10 is from high to bottom, and simultaneously, the temperature of the air blown out from the air blowing holes 21 on the surface of the base 20 is lower than that of the other surface of the glass plate, so that a compressive stress is formed on the tin surface of the glass plate, the middle of the glass plate is arched, and the means for preventing the glass plate from being scratched is strengthened. When the glass plate is broken, the side processing port 30 of the annealing furnace 10 is opened to check the surface of the base 20, thereby facilitating the cleaning.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict.
Claims (10)
1. A conveyor system in a float glass sheet manufacturing process, comprising:
the air flotation device is arranged in an annealing furnace for preparing a float glass sheet, and a space is formed between the glass sheet and the air flotation device by the air blown out by the air flotation device and forms a support for the glass sheet;
carry over pinch rolls strutting arrangement, carry over pinch rolls strutting arrangement includes two sets ofly, and two sets of carry over pinch rolls strutting arrangement locate the annealing stove both sides relatively, carry over pinch rolls strutting arrangement pulls the glass sheet removal through the gyro wheel support of locating in the annealing stove.
2. The transfer system of claim 1, wherein the air floatation device comprises a base station, a gas conduit, and a first control unit, wherein,
the base station is arranged in the annealing furnace, and the upper surface of the base station is provided with a plurality of air blowing holes which are arranged at intervals;
one end of the gas pipeline is communicated with an external gas supply system, and the other end of the gas pipeline is communicated with the lower part of the base station;
the first control unit controls the temperature and the pressure of the gas blown out from the gas blowing holes.
3. The transfer system of claim 2, wherein the air floatation device further comprises an air pressure tank disposed between the base platform and the air duct; the air pressure box is communicated with the lower part of the base platform and the gas pipeline.
4. The transmission system according to claim 3, wherein the wind pressure boxes comprise a plurality of wind pressure boxes, and the plurality of wind pressure boxes are arranged on one side or two sides of the base platform at intervals.
5. The transfer system according to claim 2, wherein the gas pipeline is provided with a gas separation valve, and the supply of different kinds of gas can be realized through the gas separation valve.
6. The transfer system of claim 5, wherein the different types of gases include compressed cooling air and kiln waste heat air.
7. The transmission system according to claim 2, wherein the first control unit comprises a programmable logic controller, an industrial personal computer, or a programmable logic controller industrial personal computer.
8. The transfer system of claim 1, wherein the pull roll support means comprises a plurality of support means spaced on either side of the lehr.
9. The transfer system according to claim 1 or 8, wherein the rollers at the ends of the pull roll support means are provided in one or more; the traction roller supporting device comprises a servo motor, and the servo motor is controlled by a programmable logic controller, an industrial personal computer or a programmable logic controller industrial personal computer.
10. The conveying system according to claim 1, further comprising a disposal port provided at both sides of the annealing furnace near the pull roll supporting means; the disposal port may be opened or closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211051380.2A CN115947532A (en) | 2022-08-30 | 2022-08-30 | Conveying system in float glass sheet preparation process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211051380.2A CN115947532A (en) | 2022-08-30 | 2022-08-30 | Conveying system in float glass sheet preparation process |
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| CN115947532A true CN115947532A (en) | 2023-04-11 |
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| CN110937783A (en) * | 2019-10-23 | 2020-03-31 | 北京玻锐特科技有限公司 | Former piece glass shaping manufacturing system of gas suspension method |
| CN211255684U (en) * | 2019-11-05 | 2020-08-14 | 中国建材国际工程集团有限公司 | Controllable air supporting of multizone temperature heats thin glass's device |
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-
2022
- 2022-08-30 CN CN202211051380.2A patent/CN115947532A/en active Pending
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| WO2006061244A1 (en) * | 2004-12-11 | 2006-06-15 | Schott Ag | Method and device for the contactless transport or storage of glass or vitroceramics |
| CN105859118A (en) * | 2016-03-30 | 2016-08-17 | 中国南玻集团股份有限公司 | Air floatation heating device for glass |
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