CN114477720A - Molten glass stirring barrel and molten glass discharging method - Google Patents
Molten glass stirring barrel and molten glass discharging method Download PDFInfo
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- CN114477720A CN114477720A CN202210135583.3A CN202210135583A CN114477720A CN 114477720 A CN114477720 A CN 114477720A CN 202210135583 A CN202210135583 A CN 202210135583A CN 114477720 A CN114477720 A CN 114477720A
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- 238000003756 stirring Methods 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000007599 discharging Methods 0.000 title claims description 120
- 239000006060 molten glass Substances 0.000 title claims description 66
- 238000010438 heat treatment Methods 0.000 claims abstract description 101
- 239000011521 glass Substances 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 230000000903 blocking effect Effects 0.000 claims description 31
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 18
- 230000007423 decrease Effects 0.000 abstract 1
- 238000004031 devitrification Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000002425 crystallisation Methods 0.000 description 6
- 230000008025 crystallization Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000005352 clarification Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/01—Means for taking-off charges of molten glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/02—Forehearths, i.e. feeder channels
- C03B7/06—Means for thermal conditioning or controlling the temperature of the glass
- C03B7/07—Electric means
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
The utility model relates to a glass liquid agitator and glass liquid unloading method, this glass liquid agitator includes the stirring barrel body, let out material pipe and heating device, the stirring barrel body is used for holding glass liquid, and be formed with feed inlet and discharge gate on the stirring barrel body, the one end of letting out the material pipe communicates with the inside of stirring barrel body, the other end of letting out the material pipe is the drain hole, it has first section and second section to let out the material pipe, first section is located between second section and the stirring barrel body, heating device is used for heating first section and second section, and can heat first section and second section to different temperatures. So, reduce the difference in temperature of letting out material pipe and stirring barrel body through the heating for let out material pipe can rapid heating up when needs, shorten the blowdown time. Simultaneously, with first section and second section heating to different temperatures, can avoid high temperature to subtract the life who decreases the discharge pipe when maintaining reasonable difference in temperature. In addition, the fluidity of the glass liquid in the stirring barrel is increased, the devitrification of the glass liquid is avoided, and the product quality is improved.
Description
Technical Field
The disclosure relates to the technical field of glass production and manufacturing, in particular to a molten glass stirring barrel and a molten glass discharging method.
Background
In the manufacturing process of the substrate glass, the batch is melted into molten glass in a kiln process, the molten glass enters a platinum channel for clarification and adjustment, and the molten glass enters a forming process after being adjusted to be manufactured into the substrate glass or semi-finished products in other shapes. In the production process, the conditions such as molding process putty can take place for the production line, leads to the glass liquid can't continue to flow to the molding process, at this moment need carry out emergent blowdown, causes bigger loss because of the trouble for avoiding simultaneously, requires that the blowdown is accomplished in the short time. The emergency discharging is usually completed in a stirring barrel of a platinum channel, and a special discharging pipe is arranged on the stirring barrel.
At present glass liquid blowdown in-process, because the difference in temperature of agitator and blowdown pipe is great, thereby the glass liquid of agitator bottom can solidify and block up the blowdown pipe, increases the time of blowdown, simultaneously, also can cause the glass liquid of agitator bottom to take place the crystallization, influences product quality.
Disclosure of Invention
The purpose of the disclosure is to provide a molten glass stirring barrel and a molten glass discharging method, which can shorten the discharging time of molten glass.
In order to achieve the above object, according to one aspect of the present disclosure, there is provided a molten glass stirring barrel comprising:
the stirring barrel body is used for containing glass liquid, and a feeding hole and a discharging hole are formed in the stirring barrel body;
one end of the discharging pipe is communicated with the inside of the stirring barrel body, the other end of the discharging pipe is a discharging port, the discharging pipe is provided with a first section and a second section, and the first section is located between the second section and the stirring barrel body; and
a heating device for heating the first and second sections and capable of heating the first and second sections to different temperatures.
Optionally, the heating device comprises a first electrode, a second electrode and a third electrode;
one end of the first electrode is in conductive connection with one end of the first section close to the stirring barrel body, and the other end of the first electrode is used for being connected with a first power supply;
one end of the second electrode is in conductive connection with one end of the second section far away from the stirring barrel body, and the other end of the second electrode is used for being connected with a second power supply;
one end of the third electrode is in conductive connection with the joint of the first section and the second section, and the other end of the third electrode is used for being connected with the first power supply and the second power supply.
Optionally, the molten glass stirring barrel further comprises a blocking structure detachably mounted at the discharge port.
Optionally, an alumina fabric for contacting with the molten glass at the discharge opening is arranged on the blocking structure.
Optionally, the blocking structure is made of insulating bricks.
Optionally, the molten glass stirring barrel further comprises a flame heater, and the flame heater is used for heating the discharge opening.
Optionally, the molten glass stirring barrel further comprises a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the first temperature sensor is used for detecting the temperature value of the stirring barrel body, the second temperature sensor is used for detecting the temperature value of the first section, and the third temperature sensor is used for detecting the temperature value of the second section.
According to another aspect of the present disclosure, the present disclosure also provides a molten glass draining method, the method comprising:
under the stirring working condition, the first section is heated to a first preset temperature through the heating device, and the second section is heated to a second preset temperature, wherein the first preset temperature and the second preset temperature are both smaller than the temperature of the stirring barrel body, and the first preset temperature is greater than the second preset temperature;
under the working condition of discharging, the first section and the second section are both heated to a third preset temperature through the heating device, wherein the third preset temperature is greater than the first preset temperature and the second preset temperature.
Optionally, the molten glass stirring barrel further comprises a fired heater and a blocking structure detachably mounted at the discharge port, and the method further comprises: and under the working condition of discharging, the blocking structure is detached, and the discharging port is heated by the flame heater.
Optionally, the heating both the first section and the second section to a third preset temperature by the heating device includes:
heating both the first section and the second section to the third preset temperature by the heating device at a heating rate of 20-40 ℃/hour.
Optionally, the difference between the temperature of the stirring barrel body and the first preset temperature is 30-80 ℃, and the difference between the first preset temperature and the second preset temperature is 20-50 ℃.
By the technical scheme, when the discharging operation is not needed, the discharging pipe can be heated by the heating device, the temperature difference between the discharging pipe and the stirring barrel body is reduced, and the discharging pipe is preheated; when the material is required to be discharged, the temperature of the discharging pipe can be continuously raised through the heating device, so that the molten glass can flow out of the discharging pipe, and the purpose of shortening the discharging time is achieved. In addition, the temperature difference between the discharging pipe and the stirring barrel body is reduced, so that the temperature and the flowability of the glass liquid in the stirring barrel body are increased, the crystallization of the glass liquid at the position is avoided, and the product quality is improved. In addition, because be in the high temperature state for a long time or heat factors such as the ground sustainedly and all can reduce the life of discharging pipe, consequently, heat first section and second section to different temperatures, can improve the mobility of the glass liquid that discharging pipe is close to the stirring barrel body on the one hand, the glass liquid of being convenient for flows, on the other hand makes the temperature of discharging pipe reduce to the drain hole by the one end that first section is close to the stirring barrel gradually, so, can guarantee that the drain time is short enough while, prolong the life of discharging pipe as far as possible.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic diagram of a molten glass stirring barrel according to an embodiment of the disclosure;
FIG. 2 is a schematic diagram of a molten glass mixing tank according to another embodiment of the present disclosure;
FIG. 3 is a partially enlarged schematic view of a discharging tube of a molten glass stirring barrel provided by an embodiment of the disclosure, wherein a heating electrode is shown;
FIG. 4 is a schematic illustration of steps of a method for discharging molten glass according to one embodiment of the present disclosure;
fig. 5 is a schematic step diagram of a molten glass discharging method according to another embodiment of the present disclosure.
Description of the reference numerals
1-stirring barrel body; 11-a feed inlet; 12-a discharge hole; 2-discharging pipe; 21-first stage; 22-a second section; 23-a discharge port; 3-a heating device; 31-a first electrode; 32-a second electrode; 33-a third electrode; 34-a first power supply; 35-a second power supply; 4-a blocking structure; 41-a body portion; 42-convex.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, unless otherwise specified, directional terms such as "upper, lower, left and right" are generally defined with reference to the drawing plane directions of the corresponding drawings. "inner and outer" refer to the inner and outer of the profile of the respective component.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
According to an aspect of the present disclosure, as shown in fig. 1 to 3, the present disclosure provides a molten glass agitator, including an agitator body 1, a drain pipe 2 and a heating device 3, the agitator body 1 is used for accommodating molten glass, and a feed inlet 11 and a discharge outlet 12 are formed on the agitator body 1, one end of the drain pipe 2 is communicated with the inside of the agitator body 1, the other end of the drain pipe 2 is a drain outlet 23, the drain pipe 2 has a first section 21 and a second section 22, the first section 21 is located between the second section 22 and the agitator body 1, the heating device 3 is used for heating the first section 21 and the second section 22, and can heat the first section 21 and the second section 22 to different temperatures.
When stirring staving 1 normally works and the production line need not to carry out the blowdown operation, can heat the blowdown pipe 2 through heating device 3, reduce the difference in temperature between blowdown pipe 2 and stirring staving 1, realize preheating to blowdown pipe 2. When production line trouble, when needing to carry out the blowdown to the glass liquid in the stirring barrel body 1, can heat up to the blowdown pipe 2 through heating device 3, heat the blowdown pipe 2 to the melting temperature of glass liquid rapidly, make the glass liquid in the blowdown pipe 2 become mobile state, flow out the blowdown pipe 2 from the drain hole 23.
Because heating device 3 can heat first section 21 and second section 22 to different temperatures, when stirring barrel body 1 need not to carry out the blowdown operation, heating device 3 can make the temperature of first section 21 be higher than the temperature of second section 22, thereby improve the temperature that is close to the glass liquid of stirring barrel body 1 in the blowdown pipe 2 on the one hand, and then improve the mobility of the glass liquid that the blowdown pipe 2 is close to stirring barrel body 1, on the other hand avoids the whole high temperature state that is in of blowdown pipe 2 always, prolong the life of blowdown pipe 2.
Through the technical scheme, when the discharging operation is not needed, the discharging pipe 2 can be heated through the heating device 3, the temperature difference between the discharging pipe 2 and the stirring barrel body 1 is reduced, and the discharging pipe 2 is preheated; when the material discharging is needed, the temperature of the material discharging pipe 2 can be continuously raised through the heating device 3, so that the glass liquid can flow out of the material discharging pipe 2, and the purpose of shortening the material discharging time is achieved. In addition, the temperature difference between the discharging pipe 2 and the stirring barrel body 1 is reduced, so that the temperature and the flowability of the glass liquid in the stirring barrel body 1 are increased, the crystallization of the glass liquid at the position is avoided, and the product quality is improved. In addition, because the long-term high temperature state or the continuous heating that is in all can reduce the life of discharging pipe 2, consequently, heat first section 21 and second section 22 to different temperatures, can improve the mobility of discharging pipe 2 near the glass liquid of agitator 1 on the one hand, the glass liquid of being convenient for flows, on the other hand makes the temperature of discharging pipe 2 reduce to discharge opening 23 by first section 21 one end that is close to the agitator gradually, so, can guarantee when the blowdown time is short enough, prolong the life of discharging pipe 2 as far as possible.
In order to heat the first segment 21 and the second segment 22 to different temperatures, as an embodiment of the present disclosure, as shown in fig. 1, the heating device 3 includes a first electrode 31, a second electrode 32, and a third electrode 33, one end of the first electrode 31 is electrically connected to one end of the first segment 21 close to the stirring barrel body 1, the other end of the first electrode 31 is used for connecting a first power supply 34, one end of the second electrode 32 is electrically connected to one end of the second segment 22 far from the stirring barrel body 1, the other end of the second electrode 32 is used for connecting a second power supply 35, one end of the third electrode 33 is electrically connected to a connection portion of the first segment 21 and the second segment 22, and the other end of the third electrode 33 is used for connecting the first power supply 34 and the second power supply 35. Different electrodes are connected to the first section 21 and the second section 22, so that the first section 21 and the second section 22 form different loops with different electrodes, the effect of respectively adjusting the temperature of the first section 21 and the temperature of the second section 22 can be realized, and the temperature of each section of the discharging pipe 2 can be flexibly controlled according to the requirement.
Here, it should be noted that the present disclosure does not limit the structure of the heating device 3, for example, the heating device 3 may also use a heating wire to heat the discharging pipe 2 through heat radiation heat transfer, or use a coil to generate an alternating magnetic field, and heat the discharging pipe 2 through eddy current heating, and the above heating method may reduce the impact on the discharging pipe material caused by direct heating through the current discharging pipe 2, and prolong the service life of the discharging pipe 2.
In order to prevent the molten glass in the discharging pipe 2 from flowing out when the molten glass stirring barrel works normally, optionally, the molten glass stirring barrel further comprises a blocking structure 4 detachably installed at the discharging port 23.
As an embodiment provided by the present disclosure, as shown in fig. 2, the blocking structure 4 is located outside the discharging pipe 2 and blocks the discharging opening 23, so as to block the molten glass at the discharging opening 23 in the discharging pipe 2. When the discharging operation is needed, the blocking structure 4 can be detached from the discharging opening 23, so that the molten glass can flow out of the discharging pipe 2.
As another embodiment provided by the present disclosure, as shown in fig. 1, the blocking structure 4 may include a main body portion 41 and a protrusion 42 formed on the main body portion 41, the main body portion 41 is located at an outer side of the discharging pipe 2, and the protrusion 42 is inserted into the discharging pipe 2 from the discharging opening 23. The bulge 42 can be matched with the inner wall of the discharge pipe 2 to seal the glass liquid in the discharge pipe 2, and the bulge 42 is adopted to seal the discharge pipe 2 to increase the tightness degree of the combination of the sealing structure 4 and the discharge pipe 2, so that a better sealing effect is achieved.
Alternatively, the depth of the protrusion 42 inserted into the discharging pipe 2 from the discharging opening 23 may be 10mm to 30 mm. The insertion depth of 10mm-30mm can ensure the plugging effect, and simultaneously avoid the situation that the bulge 42 is too long and is broken when the plugging structure 4 is removed, thereby reducing the inconvenience brought to the material discharge work.
Here, it should be noted that the material of the blocking structure 4 is not limited in the present disclosure, for example, the blocking structure 4 may be made of lightweight insulating bricks. At present, the drain port 23 generally adopts the water-cooling plate to cool the glass liquid, and the adoption of the water-cooling plate to cool the glass liquid can cause the glass liquid at the drain port 23 to be generally in a solid state, if the material needs to be drained, the solid glass at the position needs to be melted and removed at first, the difficulty and the time of the material drainage are increased, the plugging structure made of the insulating brick can reduce the heat loss of the glass liquid at the drain port 23, the fluidity of the glass liquid can be ensured by matching with the heating device 3, and the material drainage time is shortened.
In order to prevent the molten glass from attaching to the blocking structure 4, cause the blocking structure 4 to adhere to the drain port 23, as an embodiment of the present disclosure, the blocking structure 4 is further provided with an alumina fabric for contacting with the molten glass at the drain port 23, the alumina fabric is adopted to isolate the molten glass at the blocking structure 4 and the drain port 23, so that when the blocking structure 4 is removed, the molten glass cannot adhere between the blocking structure 4 and the drain pipe 2, which causes difficulty in removing the blocking structure 4, and meanwhile, the alumina fabric can also fill a gap between the blocking structure 4 and the drain port 23, so that the blocking effect is better. In addition, the temperature of the molten glass is generally higher, and the high-temperature resistant effect of the alumina fabric is good, so that the alumina fabric is suitable for isolating the blocking structure 4 and the discharge pipe 2.
In order to heat the molten glass at the discharging port 23 to a liquid state as soon as possible and avoid the molten glass from being solidified at the discharging port 23, as an embodiment of the present disclosure, the molten glass stirring barrel further includes a flame heater, the flame heater is used for heating the discharging port 23, when the discharging operation is required, on one hand, the heating device 3 is used for heating the discharging pipe 2 to melt the molten glass in the pipe, on the other hand, the flame heater is used for heating the discharging port 23 to accelerate the melting speed of the part of molten glass, because the discharging port 23 is farthest away from the stirring barrel body 1, the temperature of the molten glass at the position is the lowest compared with other molten glass in the discharging pipe 2, the temperature of the molten glass at the position can be quickly raised by the heating of the flame heater, thereby preventing the discharging difficulty caused by the blocking of the discharging port 23, and simultaneously, the instantaneous heat of the flame heater is large, the direction is more concentrated, and the heating effect is good.
Optionally, the flame heater can adopt a mixed gas of hydrogen and oxygen or natural gas as a heating flame gas source, and the mixed gas of hydrogen and oxygen is used as a common heating flame gas source in the production process of the glass plate, so that the glass plate heating device has the advantages of low cost, high heat and the like, and is suitable for being used as a gas source of the flame heater.
Optionally, as an embodiment of the present disclosure, the molten glass stirring barrel further includes a first temperature sensor, a second temperature sensor and a third temperature sensor, the first temperature sensor is used to detect a temperature value of the stirring barrel body 1, the second temperature sensor is used to detect a temperature value of the first section 21, and the third temperature sensor is used to detect a temperature value of the second section 22. In order to control the temperature difference between the stirring barrel and the discharging pipe 2, the first temperature sensor is used for detecting the temperature of the stirring barrel body 1, the second temperature sensor is used for detecting the temperature of the first section 21, and the third temperature sensor is used for detecting the temperature of the second section 22, so that the heating device 3 can heat the discharging pipe 2 according to the result obtained by the detection of the temperature sensors, and the temperature of the discharging pipe 2 is controlled. The temperature sensor is matched with the heating device 3, so that the temperature of the stirring barrel body 1, the temperature of the first section 21 and the temperature of the second section 22 can be ensured to be within a proper temperature range, and the service life of the discharging pipe 2 is prolonged.
According to another aspect of the present disclosure, as shown in fig. 4, the present disclosure further provides a molten glass discharging method applied to the molten glass stirring barrel, the method including:
step S41: under the stirring working condition, the first section 21 is heated to a first preset temperature through the heating device 3, and the second section 22 is heated to a second preset temperature, wherein the first preset temperature and the second preset temperature are both smaller than the temperature of the stirring barrel body 1, and the first preset temperature is greater than the second preset temperature;
step S42: under the blowdown operating condition, the first section 21 and the second section 22 are both heated to a third preset temperature by the heating device 3, wherein the third preset temperature is greater than the first preset temperature and the second preset temperature.
It can be understood that under the stirring operating mode, through heating device 3 with first section 21 heating to first preset temperature to heat second section 22 to the second preset temperature, thereby preheat blow down pipe 2 in advance before carrying out the blow down to the glass liquid, to blow down pipe 2's heating time when shortening follow-up blow down.
Through above-mentioned technical scheme, under the stirring operating mode, can heat the discharge pipe 2 through heating device 3, reduce the difference in temperature between discharge pipe 2 and the stirring barrel body 1 for under the discharge operating mode, promptly, when needing to carry out the blowdown to the glass liquid in the glass liquid agitator, heating device 3 heats the time of discharge pipe 2 and shortens greatly, has accelerated the speed of blowdown work. And, because the erosion of high temperature glass liquid and the current impact of electrode heating all can reduce the life of discharging pipe 2, and make stirring barrel body 1, first section 21, second section 22 be in by high to low ladder temperature state, can reduce first preset temperature and second preset temperature as far as possible under the prerequisite of the reasonable difference in temperature of guaranteeing stirring barrel body and discharging pipe to prolong the life of discharging pipe 2, reduction in production cost.
Here, it should be noted that the present disclosure does not limit the heating method for maintaining the preset temperature of the heating device 3, and specifically, in step S41, the heating device 3 may stop heating after heating the first segment 21 to the first preset temperature and heating the second segment 22 to the second preset temperature, and restart heating after the temperature of the first segment 21 is lower than the first preset temperature and the temperature of the second segment 22 is lower than the second preset temperature; alternatively, the heating device 3 may be in operation at all times to maintain the temperatures of the first section 21 and the second section 22 at the first preset temperature and the second preset temperature, respectively. Similarly, in step S42, the heating device 3 may operate all the time to maintain the temperature of the blowdown pipe 2 at the third preset temperature, or may stop heating the blowdown pipe 2 after heating the temperature of the blowdown pipe 2 to the third preset temperature, and start heating after the temperature of the blowdown pipe 2 is reduced to be lower than the third preset temperature.
Optionally, the difference between the temperature of the stirring barrel body 1 and the first preset temperature may be 30 ℃ to 80 ℃, the difference between the first preset temperature and the second preset temperature may be 20 ℃ to 50 ℃, and the temperature difference can prolong the service life of the discharging pipe 2 while ensuring that the temperature difference between the discharging pipe 2 and the stirring barrel body 1 is within a reasonable range.
Further, the difference between the temperature of the stirring barrel body 1 and the first preset temperature can be 50-70 ℃. The difference between the first preset temperature and the second preset temperature can also be 30-40 ℃.
In the prior art, before the glass liquid in the glass liquid stirring barrel needs to be discharged, the temperature difference between the stirring barrel body 1 and the discharging pipe 2 is about 150 ℃, the discharging time needs about 3.7 hours, and the crystallization defect rate is about 1.3%. The discharging is carried out by adopting the molten glass stirring barrel and the molten glass discharging method provided by the disclosure, the difference value between the temperature of the stirring barrel body 1 and the first preset temperature is controlled to be 30-80 ℃, the difference value between the first preset temperature and the second preset temperature is controlled to be 20-50 ℃, the discharging time can be shortened to 11 minutes, the crystallization defect rate is reduced to 0.7%, the discharging time is greatly shortened, and the crystallization defect rate is reduced. In the case where the heating device 3 includes the first electrode 31, the second electrode 32, and the third electrode 33, in step S41, the first electrode 31, the third electrode 33, and the first segment 21 form a loop, and the current passes through the first segment 21 while heating the first segment 21 to the first preset temperature; the second electrode 32, the third electrode 33 and the second segment 22 form a loop, the second segment 22 is heated to a second preset temperature while the current passes through the second segment 22, and the temperature of the first segment 21 and the second segment 22 can be controlled by controlling the magnitude of the current.
In step S42, under the discharging condition, the first electrode 31, the second electrode 32, and the third electrode 33 conduct the currents generated by the first power supply 34 and the second power supply 35 to the first section 21 and the second section 22 according to a third preset temperature, so that the first section 21 and the second section 22 of the discharging pipe 2 reach the third preset temperature, generally, the third preset temperature is the melting temperature of the molten glass, and the discharging pipe 2 reaching the third preset temperature guides the heat to the glass in the discharging pipe 2, so that the glass is melted into the molten glass and flows out of the discharging port 23 along with the molten glass in the stirring barrel 1.
Optionally, the molten glass stirring barrel further comprises a fired heater and a blocking structure 4 detachably mounted at the discharge port 23, and the method further comprises: under the working condition of discharging, the plugging structure 4 is detached, and the discharging port 23 is heated by the flame heater. Because the distance between the discharging port 23 and the stirring barrel body 1 is farthest, the difference of the temperature compared with the stirring barrel body 1 is also largest, so that the discharging port 23 is heated by using the flame heater as the auxiliary heating device 3, the glass melting time can be shortened, and the discharging speed can be accelerated.
In order to protect the bleed pipe 2 during the heating of the bleed pipe 2 to the third preset temperature, optionally, the heating of both the first section 21 and the second section 22 to the third preset temperature by the heating device 3 includes: the first section 21 and the second section 22 are both heated to a third preset temperature by the heating device 3 at a heating rate of 20-40 ℃/hour. Because the heating rate is positively correlated with the magnitude of the current between the electrode and the discharging pipe 2, and the larger the current is, the larger the impact on the material of the discharging pipe 2 is, the service life of the discharging pipe 2 is shortened, and under the heating rate, the discharging pipe 2 can be heated in the shortest time to reach the third preset temperature, the current impact on the discharging pipe 2 can be reduced to the greatest extent, and the service life of the discharging pipe 2 is prolonged.
In order to make the technical solutions provided by the present disclosure more clearly understood by those skilled in the art, embodiments of the present disclosure also provide another method for discharging glass, as shown in fig. 5, the method includes:
step S51, under the stirring working condition, heating the first section 21 to a first preset temperature through the heating device 3, and heating the second section 22 to a second preset temperature, wherein the first preset temperature and the second preset temperature are both smaller than the temperature of the stirring barrel body 1, and the first preset temperature is greater than the second preset temperature;
step S52, under the working condition of discharging, detaching the blocking structure 4, heating the discharging port 23 through the flame heater, and heating the first section 21 and the second section 22 to a third preset temperature through the heating device 3 at a heating rate of 20-40 ℃/hour, wherein the third preset temperature is higher than the first preset temperature and the second preset temperature.
It should be noted that, for the above method embodiment, for the sake of simplicity of description, it is described as a series of action combinations, but it should be understood by those skilled in the art that the present disclosure is not limited by the described action sequence, for example, after the heating device 3 is turned on to heat the first section 21 and the second section 22 at the third preset temperature, the blocking structure 4 may be detached, and the discharge port 23 may be heated by a flame heater.
Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required in order to implement the disclosure.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (11)
1. A molten glass stirring barrel is characterized by comprising:
the stirring barrel body (1) is used for containing glass liquid, and a feeding hole (11) and a discharging hole (12) are formed in the stirring barrel body (1);
the device comprises a discharging pipe (2), one end of the discharging pipe (2) is communicated with the inside of the stirring barrel body (1), the other end of the discharging pipe (2) is provided with a discharging port (23), the discharging pipe (2) is provided with a first section (21) and a second section (22), and the first section (21) is positioned between the second section (22) and the stirring barrel body (1); and
-heating means (3) for heating the first section (21) and the second section (22) and capable of heating the first section (21) and the second section (22) to different temperatures.
2. A glass stirring barrel according to claim 1, wherein the heating device (3) comprises a first electrode (31), a second electrode (32) and a third electrode (33);
one end of the first electrode (31) is electrically connected with one end of the first section (21) close to the stirring barrel body (1), and the other end of the first electrode (31) is used for being connected with a first power supply (34);
one end of the second electrode (32) is electrically connected with one end, far away from the stirring barrel body (1), of the second section (22), and the other end of the second electrode (32) is used for being connected with a second power supply (35);
one end of the third electrode (33) is electrically connected with the joint of the first section (21) and the second section (22), and the other end of the third electrode (33) is used for connecting the first power supply (34) and the second power supply (35).
3. A molten glass stirring barrel according to claim 1, characterized in that the molten glass stirring barrel further comprises a blocking structure (4) detachably mounted at the discharge opening (23).
4. A glass stirring barrel according to claim 3, wherein the blocking structure (4) is provided with an alumina cloth for contacting the glass at the discharge opening (23).
5. A glass stirring tank according to claim 3, characterized in that the blocking structure (4) is made of insulating bricks.
6. A molten glass stirring barrel according to any one of claims 1 to 5, characterized in that the molten glass stirring barrel further comprises a flame heater for heating the discharge opening (23).
7. The molten glass stirring barrel according to any one of claims 1 to 5, further comprising a first temperature sensor for detecting a temperature value of the stirring barrel body (1), a second temperature sensor for detecting a temperature value of the first section (21), and a third temperature sensor for detecting a temperature value of the second section (22).
8. A molten glass discharging method applied to the molten glass stirring barrel according to any one of claims 1 to 7, wherein the method comprises the following steps:
under the stirring working condition, the first section (21) is heated to a first preset temperature through the heating device (3), and the second section (22) is heated to a second preset temperature, wherein the first preset temperature and the second preset temperature are both smaller than the temperature of the stirring barrel body (1), and the first preset temperature is greater than the second preset temperature;
under the working condition of discharging, the first section (21) and the second section (22) are heated to a third preset temperature through the heating device (3), wherein the third preset temperature is higher than the first preset temperature and the second preset temperature.
9. A molten glass tapping method according to claim 8, wherein said molten glass stirring vessel further comprises a fired heater and a blocking structure (4) removably mounted at said tapping opening (23), said method further comprising:
and under the working condition of discharging, the blocking structure (4) is detached, and the discharging port (23) is heated by the flame heater.
10. The molten glass draining method according to claim 8, characterized in that said heating both said first section (21) and said second section (22) to a third preset temperature by said heating device (3) comprises:
-heating both said first section (21) and said second section (22) to said third preset temperature by said heating means (3) at a heating rate comprised between 20 ℃ and 40 ℃/hour.
11. The molten glass discharging method according to claim 8, wherein the difference between the temperature of the stirring barrel body (1) and the first preset temperature is 30-80 ℃, and the difference between the first preset temperature and the second preset temperature is 20-50 ℃.
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| CN202210135583.3A CN114477720A (en) | 2022-02-14 | 2022-02-14 | Molten glass stirring barrel and molten glass discharging method |
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| CN202210135583.3A CN114477720A (en) | 2022-02-14 | 2022-02-14 | Molten glass stirring barrel and molten glass discharging method |
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