CN110683751A - Float glass transition roller cleaning method and transition roller for realizing method - Google Patents
Float glass transition roller cleaning method and transition roller for realizing method Download PDFInfo
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- CN110683751A CN110683751A CN201911140580.3A CN201911140580A CN110683751A CN 110683751 A CN110683751 A CN 110683751A CN 201911140580 A CN201911140580 A CN 201911140580A CN 110683751 A CN110683751 A CN 110683751A
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- 230000007704 transition Effects 0.000 title claims abstract description 216
- 238000004140 cleaning Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000005329 float glass Substances 0.000 title claims abstract description 21
- 230000009477 glass transition Effects 0.000 title claims abstract description 16
- 239000011521 glass Substances 0.000 claims abstract description 102
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 230000009467 reduction Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 42
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 26
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 238000005496 tempering Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 238000005485 electric heating Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 235000005992 Sicana Nutrition 0.000 description 2
- 241000529722 Sicana Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 239000010922 glass waste Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005352 clarification Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/168—Means for cleaning the rollers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/163—Drive means, clutches, gearing or drive speed control means
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
- C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
- C03B35/16—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by roller conveyors
- C03B35/18—Construction of the conveyor rollers ; Materials, coatings or coverings thereof
- C03B35/183—Construction of the conveyor rollers ; Materials, coatings or coverings thereof specially adapted for thermal adjustment of the rollers, e.g. insulating, heating, cooling thereof
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to the technical field of float glass production, and relates to a float glass transition roller cleaning method, which comprises an S0 temperature adjusting stage; raising the temperature of the transition roller to be cleaned to a first set value T1(ii) a Raising the temperature of the glass ribbon to a second set point T2(ii) a The first set point and the second set point are both within the glass plastic state temperature range; s1 cleaning stage; under normal working conditions, the linear speed of the transition roller to be cleaned is V0Adjusting the rotating speed of the transition roller to be cleaned to V1，V1:V01 =1.2:1 to 1.05: 1; s2 reduction stage; after cleaning, reducing the speed of the transition roller to the normal working condition speed, and reducing the temperature of the glass ribbon to the normal working condition temperature; and reducing the temperature of the transition roller to the normal working condition temperature. By using the friction between the transition roll and the glass ribbonContaminants on the transition roll adhere to the glass ribbon, enabling cleaning of the transition roll. The invention also provides a transition roller for implementing the method.
Description
Technical Field
The invention belongs to the technical field of float glass production, and relates to a float glass transition roller cleaning method and a transition roller for realizing the method.
Background
In the float glass production process, batch materials enter a melting furnace through a batch feeder, are melted into glass liquid at the high temperature of 1550 ℃ ~ 1600 ℃ and then freely flow into a tin bath after being cooled to about 1100 ℃ through the technological processes of clarification, cooling and the like, float on the molten metal tin liquid, and are flattened, polished and formed to form a glass plate with expected thickness and width.
In the process, the working environment of the transition roller is severe, the surface of the transition roller is very easy to be polluted, defects are formed on the lower surface of the glass, and the quality of the glass is influenced. The transition rolls need to be cleaned periodically, and the currently used techniques are two types:
the first is to use a tin wiping device, a tensioning device is arranged right below a transition roller in a slag box, and a graphite block is placed on the tensioning device. When wiping is needed, the height of the graphite block is raised to be in contact with the transition roller through the action of external force, and pollutants on the surface of the transition roller are wiped and removed. However, as the graphite block wears or is pulverized and eroded, the wiping effect is unstable and difficult to control.
The second is roll replacement cleaning, and on the basis of using the tin wiping device technology, the transition roll is replaced or cleaned for 1-2 times every year. The transition roller needs to be detached, withdrawn from the slag box, replaced or cleaned, and then reinstalled in place. The mode needs 6 ~ 8 people to cooperate the work more than 4 hours, but this kind of mode work load is big, wastes time and energy, and is big to the influence of production, has the safe risk of disconnected board.
Disclosure of Invention
The invention aims to: aiming at the problems of poor wiping effect and large workload in the cleaning process of the float glass transition roller in the prior art, the method for cleaning the float glass transition roller is provided, the cleaning of the transition roller is realized by adjusting the friction force between a glass plate and the transition roller, and the method has the advantages of good cleaning effect, low labor intensity, small influence on production and no safety risk.
In order to achieve the purpose, the invention adopts the technical scheme that:
float glassThe cleaning method of the transition roller, each transition roller in the transition roller table can adjust the rotational speed alone; when the transition roller to be cleaned is cleaned, setting values of other transition roller parameters in a normal production state; under normal working conditions, the linear speed of the transition roller to be cleaned is V0Comprises the following steps;
s1 cleaning stage;
gradually adjusting the rotating speed of the transition roller to be cleaned to V1，V1:V0=1.2:1～1.05:1；
S2 reduction stage;
and after cleaning, reducing the speed of the transition roller to a set value in a normal production state.
The transition roller table is generally composed of three or more transition rollers, and when one transition roller is cleaned, the working states of other transition rollers are unchanged. By increasing the speed of the transition roller to be cleaned, the friction between the transition roller to be cleaned and the glass ribbon is increased. As the friction between the transition roll and the glass ribbon increases, the adhesive adhering to the transition roll falls off the transition roll under the influence of the friction.
When the linear speed of the transition roller is controlled to be 5% -20% higher than the conveying speed of the glass plate, the bonding materials can be effectively removed; when the speed is lower than this ratio, cleaning is incomplete, and when the speed exceeds this ratio, the glass ribbon tends to be stretched.
And after the cleaning is finished, recovering the normal working state of the transition roller, and removing the glass waste stuck with the pollutants, so that the normal production can be carried out. The glass waste can be reused for glass processing. According to the invention, the transition roller is cleaned by using a part of glass material, so that the cleaning effect of the transition roller is better, the labor intensity is lower, the influence on production is less, and the safety risk of plate breakage is avoided.
As a preferable scheme of the invention, before the S1 cleaning stage, the method also comprises an S0 temperature adjusting stage;
raising the temperature of the transition roller to be cleaned to a first set value T1(ii) a Raising the temperature of the glass ribbon to a second set point T2；
The first set point and the second set point are both within the glass plastic state temperature range;
the reduction stage at S2 also includes reducing the ribbon temperature, reducing the transition roll temperature to a setpoint value at normal production conditions.
Namely the total steps are as follows: s0 temperature adjusting stage;
raising the temperature of the transition roller to be cleaned to a first set value T1(ii) a Raising the temperature of the glass ribbon to a second set point T2；
The first set point and the second set point are both within the glass plastic state temperature range;
s1 cleaning stage;
under normal working conditions, the linear speed of the transition roller to be cleaned is V0，
Adjusting the rotating speed of the transition roller to be cleaned to V1，V1:V0=1.2:1～1.05:1；
The cleaning time is 2-12 minutes;
s2 reduction stage;
after the cleaning is finished, the speed of the transition roller is reduced, the temperature of the glass ribbon is reduced, and the temperature of the transition roller is reduced to a set value in a normal production state. Namely, the speed of the transition roller is reduced to the set speed in the normal production state, and the temperature of the glass ribbon is reduced to the set temperature in the normal production state; and reducing the temperature of the transition roller to the set temperature in the normal production state. The sequence of adjustment is preferably such that the speed of the transition rolls is reduced first, then the temperature of the glass ribbon is reduced, and then the temperature of the transition rolls is reduced.
Firstly, raising the temperature of the transition roller to be cleaned and the glass belt to the plastic state temperature range of the glass; the plastic state range refers to a temperature at which the glass is in a softened state, exhibits plasticity, but is not broken by stretching. In one aspect, the transition roll contacts the glass ribbon from a line contact to a surface contact; the increase in contact surface causes the glass ribbon to scrape the bond on the transition roll, making the bond more susceptible to falling off. On the other hand, after the temperature is increased, the bonding degree of the bonding object on the transition roller and the transition roller is reduced; the glass ribbon is in a softened state after being heated, and the adhesive is easily stuck to the glass plate.
In the S0 tempering phase step, the temperature of the glass ribbon is raised to a second setpoint T2, which refers to the temperature of the glass ribbon at the location of the transition rolls to be cleaned. The temperature of the entire glass ribbon as it passes from the exit of the tin bath through the transition roll table is gradually reduced, i.e., the temperature of the glass ribbon at each transition roll position is different. Because the ribbon is dynamically conveyed, the temperature of the ribbon is not the temperature of a particular glass location, but the temperature of the ribbon when the transition rolls are to be cleaned.
In a preferred embodiment of the invention, during the tempering phase S0, the temperature of the glass ribbon at the transition roll to be cleaned is T during normal operation0The temperature of the glass ribbon at the tin slot is T, wherein T0＜T1≤T，T0＜T2≤T。
Within the temperature range, the glass ribbon is in a plastic state, the glass has certain plasticity and is in a soft state, the glass ribbon can be in full contact with the transition roller to form a cambered contact surface, the contact area is increased, and the cleaning of bonding materials of the transition roller is facilitated.
As a preferred embodiment of the present invention, T1Less than T2. I.e., the temperature of the transition roll to be cleaned is lower than the temperature of the glass ribbon.
When the temperature of the glass ribbon is greater than the temperature of the transition roll to be cleaned, the adhesive bonds to the glass ribbon more readily.
As a preferred embodiment of the present invention, T0+5℃≤T1≤T0+25℃。
And raising the temperature of the transition roller to be cleaned to a set value, namely raising the temperature of the transition roller to be cleaned to be 5-25 ℃ higher than that of the normal working condition. In the elevated temperature range described above, the degree of adhesion of the adhesive to the transition roll is reduced and adhesion to the glass ribbon is more likely. The temperature is too low, and the adhesive is not easy to fall off; the temperature is too high, which can raise the temperature of the glass ribbon and easily cause the glass ribbon to break.
The temperature of each position is different when the glass ribbon is conveyed; the temperature of the same position is used as a reference, so that the test error of the temperature sensor is reduced, and the accurate control of the temperature is facilitated.
As a preferred embodiment of the present invention,in the temperature adjusting stage of S0, the temperature of the glass ribbon at the outlet end of the tin bath is increased by delta t1，0℃＜Δt1≤5℃。
The temperature of the whole glass belt is increased by the way of increasing the temperature of the glass belt at the outlet end of the tin bath, the original temperature sensor at the outlet end of the tin bath can be used, the control scheme of the same position and the same testing instrument is favorable for the accurate control of the temperature, and the temperature of the glass belt is increased more conveniently.
As a preferred embodiment of the invention, in the tempering phase S0, the height of the transition roller to be cleaned is increased by Δ h1，0mm＜Δh1≤5mm。
Through the height of promoting the transition roller, realize that the transition roller from the glass board under the support rise glass board, the area of contact increase of glass board and transition roller, frictional force promotes between the glass board.
As a preferred embodiment of the invention, in the S1 cleaning phase, the height of the transition roller to be cleaned is increased by Δ h2，0mm＜Δh2≤5mm。
The operation of raising the height of the transition roll may be performed during the cleaning phase. The lifting is realized during cleaning, and the falling of the bonding object is facilitated due to the fact that the relative speed of the glass belt and the transition roller is high.
In a preferred embodiment of the present invention, the cleaning time is 2 to 12 minutes, preferably 3 to 8 minutes.
The invention also provides a transition roller for realizing the cleaning method, which comprises a transition roller body, an electric heater, a temperature sensor, a temperature control device and a transmission device;
a cavity is formed in the transition roller body;
the electric heater is arranged in the cavity of the transition roller body;
a temperature sensor is arranged on the electric heater;
the electric heater and the temperature sensor are connected with the temperature control device;
the transmission device is connected with the transition roller body.
As a preferable aspect of the present invention, the transmission includes a main transmission and a cleaning transmission;
the main transmission device comprises a main transmission gear box, a clutch and a universal coupling;
one end of the transition roller is sequentially connected with the universal coupling, the clutch and the main transmission gear box;
the cleaning transmission device comprises a motor, a speed reducer, a synchronous transmission belt and a belt pulley;
the other end of the transition roller is sequentially connected with the belt pulley, the synchronous conveyor belt, the speed reducer and the motor.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the cleaning method of the float glass transition roller, the temperature of the transition roller and the temperature of the glass belt are increased, so that the bonding matter is easy to fall off, the contact area of the glass belt and the transition roller is increased due to softening of the glass belt, and pollutants on the transition roller are bonded to the glass belt by utilizing the friction force between the transition roller and the glass belt under the self-weight action of the glass belt, so that the cleaning of the transition roller is realized.
2. The cleaning method of the float glass transition roller does not need to use a tin wiping device, and has good cleaning effect; the transition roller is not required to be disassembled and assembled, so that the cleaning time is saved, and the influence on production is small.
3. According to the float glass transition roller for realizing the method, the heating device and the temperature control device are arranged in the transition roller, so that the temperature rise of the transition roller is realized. And the independent speed regulation of each transition roller is realized by arranging an independent transmission device.
4. The float glass transition roller for realizing the method is more suitable for improving the existing float glass production line through the arrangement of the main transmission device and the cleaning transmission device. On the basis of the existing transition rollers of the main transmission device, the cleaning method can be realized only by additionally arranging the cleaning transmission device which can be respectively connected with each transition roller, thereby being beneficial to the improvement of equipment and improving the application value of the equipment.
Drawings
Fig. 1 is a schematic view of the front view of the structure of the present invention.
Fig. 2 is a schematic top view of the structure of the present invention.
Icon: 1-a first transition roll body; 11-a first pulley; 12-a first electric heating tube; 2-a second transition roll body; 21-a second pulley; 3-a third transition roll body; 31-a third pulley; 4-a glass ribbon; 5-a tin bath; a 51-tin notch; 6-a speed reducer; 61-reducer output shaft; 62-a drive belt; 7-a motor; 8-main drive gear; 81-universal coupling; 82-Clutch.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
This example illustrates the production of SiCaNa white glass of 4mm thickness, the glass starting softening temperature being 552 ℃, the transition rolls comprising a first transition roll, a second transition roll and a third transition roll sequentially distant from the outlet of the tin bath, the temperature of the glass at the tin bath opening being 610 ℃, the temperature at the first transition roll being 580 ℃, the temperature at the second transition roll being 570 ℃ and the temperature at the third transition roll being 560 ℃. Three transition rollers in the production line are respectively connected with a transmission device for independent transmission. In order to realize the temperature rise of each transition roller, a heating device is arranged under each transition roller of the transition roller slag box.
When cleaning the first transition roller, the steps are as follows:
the cleaning phase of the cleaning agent of S1,
the rotation speed of the first transition roll is increased by 10%. The rotating speeds of the second transition roller and the third transition roller are unchanged. The softened glass forms cambered surface contact on the first transition roller, and the contact area is increased. The cleaning time was 5 minutes.
At the step of reduction at S2, the reduction stage,
after cleaning, reducing the speed of the transition roller to a normal speed, and reducing the temperature of the glass ribbon to a normal temperature; and reducing the temperature of the transition roller to the normal temperature.
Through the cleaning operation, the surface bonding of the first transition roller is completely cleaned. The glass containing the adhesive can be recycled.
Example 2
This example illustrates the production of SiCaNa white glass of 4mm thickness, the glass starting softening temperature being 560 ℃, the transition rolls comprising a first transition roll, a second transition roll and a third transition roll sequentially distant from the outlet of the tin bath, the glass temperature at the tin bath opening being 610 ℃, the glass temperature at the first transition roll being 580 ℃, the glass temperature at the second transition roll being 570 ℃ and the glass temperature at the third transition roll being 560 ℃. Three transition rollers in the production line are respectively connected with a transmission device for independent transmission. In order to realize the temperature rise of each transition roller, a heating device is arranged under each transition roller of the transition roller slag box.
When cleaning the first transition roller, the steps are as follows:
s0 a temperature-adjusting stage is carried out,
the temperature of the first transition roll was raised to 585 deg.c and the temperature of the glass ribbon at the tin slot was raised from 610 deg.c to 613 deg.c. At this temperature, the glass ribbon is still in a plastic state and does not affect the normal operation of the production line.
The cleaning phase of the cleaning agent of S1,
the rotation speed of the first transition roll is increased by 10%. The rotating speeds of the second transition roller and the third transition roller are unchanged. The softened glass forms cambered surface contact on the first transition roller, and the contact area is increased. The cleaning time was 5 minutes.
At the step of reduction at S2, the reduction stage,
after cleaning, reducing the speed of the transition roller to a normal speed, and reducing the temperature of the glass ribbon to a normal temperature; and reducing the temperature of the transition roller to the normal temperature.
Through the cleaning operation, the surface bonding of the first transition roller is completely cleaned. The glass containing the adhesive can be recycled.
Example 3
This example differs from example 2 in that the control parameters for the first transition roll and the glass ribbon temperature are slightly different, and the rate of speed increase and the run time of the first transition roll are slightly different.
In this example, the tempering stage of S0 was to raise the temperature of the first transition roll to 605 ℃ and the temperature of the glass ribbon at the tin slot from 610 ℃ to 615 ℃. The first transition roll was raised 3mm in height. And S1, increasing the rotating speed of the first transition roller by 5%. The cleaning time was 8 minutes.
In this example, the glass ribbon softened to a higher degree than in example 1. The speed is not suitable to be too fast, and the plate breaking is avoided.
Example 4
This example differs from example 2 in that the control parameters for the first transition roll and the glass ribbon temperature are slightly different, and the rate of speed increase and the run time of the first transition roll are slightly different.
In this example, the tempering stage of S0 was to raise the temperature of the first transition roll to 590 ℃ and the temperature of the glass ribbon at the tin slot from 610 ℃ to 612 ℃. And S1, the rotating speed of the first transition roller is increased by 15%. The cleaning time was 12 minutes. And lifting the height of the first transition roller by 5mm, and then reducing the height of the first transition roller to the normal working condition.
In this embodiment, the surface bond of the first transition roll is all cleaned. The glass containing the adhesive can be recycled.
Repeating the above operations can achieve cleaning of each transition roll.
Example 5
The present embodiment is different from embodiment 2 in that the present embodiment cleans the second transition roller. The control parameters for the second transition roll and the glass ribbon temperature are slightly different, and the speed increasing proportion and the running time of the second transition roll are slightly different.
In this example, the temperature adjustment stage of S0 increased the temperature of the second transition roll to 585 deg.c and the temperature of the glass ribbon at the tin slot to 5 deg.c. And S1, increasing the rotating speed of the first transition roller by 20%. The cleaning time was 2 minutes. And the height of the second transition roller is lifted by 5mm, and then the height of the second transition roller is reduced to the height of the normal working condition.
In this embodiment, the surface bond of the second transition roll is all cleaned. The glass containing the adhesive can be recycled.
As can be seen from examples 1-5, the cleaning of the transition rolls was accomplished by increasing the speed of the transition rolls, increasing the temperature of the transition rolls and the glass ribbon to make the bond more easily shed, softening the glass ribbon to increase the contact area between the glass ribbon and the transition rolls, and bonding the contaminants on the transition rolls to the glass ribbon under the weight of the glass ribbon by the friction between the transition rolls and the glass ribbon in accordance with the process and parameter requirements of the present invention. A tin wiping device is not needed, so that the cleaning effect is good; the transition roller is not required to be disassembled and assembled, so that the cleaning time is saved, and the influence on production is small.
Example 6
As shown in fig. 1 and 2, a float glass transition roll includes three identically disposed transition rolls, each of which performs the above-described cleaning method. The first transition roller comprises a first transition roller body 1, the second transition roller comprises a second transition roller body 2, and the third transition roller comprises a third transition roller body 3. The glass ribbon 4 is discharged from the tin bath outlet 51 of the tin bath 5, and then enters a downstream process through a transition roll. The structure of the transition roll will be described by taking the first transition roll as an example.
The first transition roller comprises a first transition roller body 1 and a first electric heating pipe 12; a cavity is formed in the transition roller body 1; the first electric heating pipe 12 is arranged in the cavity of the first transition roller body 1; a temperature sensor is arranged on the first electric heating pipe 12; the first electric heating pipe 12 and the temperature sensor are connected with an external temperature control device;
the transition roller further comprises a transmission device, and the transmission device comprises a main transmission device and a cleaning transmission device; the main transmission device comprises a main transmission gear box 8, a clutch 82 and a universal coupling 81; one end of the first transition roller body 1 is sequentially connected with the clutch 82, the universal coupling 81 and the main transmission gear box 8;
the cleaning transmission device comprises a motor 7, a speed reducer 6, a synchronous transmission belt 62 and a first belt pulley 11;
the other end of the first transition roller 1 is sequentially connected with the first belt pulley 11, the synchronous conveyor belt 62, the speed reducer 6 and the motor 7. One end of the synchronous conveyor belt 62 is connected with the first belt pulley 11, and the other end is connected with the reducer output shaft 61 of the reducer 6.
The combination of the motor 7, the speed reducer 6 and the synchronous transmission belt 62 can be used for the first transition roller 1, can be connected to the second belt pulley 21 of the second transition roller 2, and can be connected to the third belt pulley 31 of the third transition roller 3. And realizing independent transmission of each transition roller.
When cleaning the first transition roller, the following steps can be carried out:
1) starting a first electric heating pipe 12 in the first transition roller body 1, adjusting the power of the first electric heating pipe 12, and determining a temperature value of the transition roller according to the thickness of a product; and (5) adjusting the temperature of the glass ribbon at the outlet end of the tin bath to 3-5 ℃.
2) And installing a synchronous transmission belt to connect the first transition roller with the speed reducer 6.
3) The clutch 82 between the first transition roller and the main transmission gear box 8 is separated, and the clutches of the second transition roller and the third transition roller are kept closed.
4) And starting a motor 7, adjusting the speed of the roller, and determining the speed of the transition roller and the cleaning time according to the thickness of the product.
5) After cleaning, the first electric heating pipe 12 is closed, the speed of the motor 7 is reduced to the normal roller speed, the motor 7 is stopped, the clutch 82 of the transition roller is closed, and the synchronous conveyor belt 62 is detached.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A float glass transition roller cleaning method is characterized in that each transition roller in a transition roller table can independently adjust the rotating speed; when the transition roller to be cleaned is cleaned, setting values of other transition roller parameters in a normal production state; under normal working conditions, the linear speed of the transition roller to be cleaned is V0，
S1 cleaning stage;
gradually adjusting the rotating speed of the transition roller to be cleaned to V1，V1:V0=1.2:1～1.05:1；
S2 reduction stage;
and after cleaning, reducing the speed of the transition roller to a set value in a normal production state.
2. The float glass transition roll cleaning method of claim 1, further comprising, prior to the S1 cleaning stage, an S0 tempering stage;
raising the temperature of the transition roller to be cleaned to a first set value T1(ii) a Raising the temperature of the glass ribbon to a second set point T2；
The first set point and the second set point are both within the glass plastic state temperature range;
the reduction stage at S2 also includes reducing the ribbon temperature, reducing the transition roll temperature to a setpoint value at normal production conditions.
3. The method of claim 2, wherein during the S0 tempering phase, the temperature of the glass ribbon at the transition roll to be cleaned is T at normal operating conditions0The temperature of the glass ribbon at the tin slot is T, wherein T0＜T1≤T，T0＜T2≤T。
4. The float glass transition roll cleaning method of claim 3, wherein T is1＜T2。
5. The float glass transition roll cleaning method of claim 3, wherein T is0+5℃≤T1≤T0+25℃。
6. The method of claim 2, wherein the exit end of the tin bath is tempered during the S0 tempering stage by tempering the glass ribbon at the exit end of the tin bathDegree increase Δ t1，0℃＜Δt1≤5℃。
7. The float glass transition roll cleaning method of claim 2, wherein in the S1 cleaning stage, the height of the transition roll to be cleaned is raised by Δ h2，0mm＜Δh2≤5mm。
8. The float glass transitional roller cleaning method as claimed in any one of claims 1 to 7, wherein in the S1 cleaning stage, the cleaning time is 2 to 12 minutes.
9. A transition roll for implementing the method of any one of claims 1 to 7, wherein the transition roll comprises a transition roll body, an electric heater, a temperature sensor, a temperature control device and a transmission device;
a cavity is formed in the transition roller body;
the electric heater is arranged in the cavity of the transition roller body;
a temperature sensor is arranged on the electric heater;
the electric heater and the temperature sensor are connected with the temperature control device;
the transmission device is connected with the transition roller body.
10. The transition roll of claim 9, wherein the transmission comprises a main transmission and a cleaning transmission;
the main transmission device comprises a main transmission gear box, a clutch and a universal coupling;
one end of the transition roller is sequentially connected with the universal coupling, the clutch and the main transmission gear box;
the cleaning transmission device comprises a motor, a speed reducer, a synchronous transmission belt and a belt pulley;
the other end of the transition roller is sequentially connected with the belt pulley, the synchronous conveyor belt, the speed reducer and the motor.
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