Structure for reducing thickness of material pile in liquid crystal glass production

Abstract

The invention discloses a structure for reducing the thickness of a material pile in liquid crystal glass production, belongs to the field of glass production, and not only ensures the sealing between a material bin and a kiln during feeding, but also reduces the thickness of the material pile and ensures the melting speed and the melting quality. The device mainly comprises a mounting platform, a stock bin is arranged on the mounting platform, a bin body of the stock bin comprises a stock bin inner shell and a stock bin outer shell, a cooling cavity is formed between the stock bin inner shell and the stock bin outer shell, and a cooling medium is provided for the cooling cavity by a cooling system; a batch inlet at the upper end of the stock bin is provided with a level gage, and the lower end of the stock bin is obliquely arranged; a feeding shaft is rotationally arranged on a bin body at the front end of a batch outlet of the stock bin, a plurality of feeding turning plates are annularly arranged on the feeding shaft at equal intervals, and the feeding shaft is driven by a transmission system; the batch outlet end of the stock bin is plugged into a feeding port of the glass kiln, and a sealing boss is arranged on a stock bin shell at the contact position of the stock bin and the feeding port of the glass kiln. The device is mainly used for reducing the material pile thickness in liquid crystal glass production.

Description

Technical Field

[0001] The invention relates to the field of glass production, and in particular to a structure for reducing the thickness of a material pile in the production of liquid crystal glass. Background Art

[0002] In the production of liquid crystal glass, the glass batch has a high melting temperature and a slow melting speed due to its alkali-free formula. In order to increase the melting temperature, a screw feeder is used. The screw feeder can be well sealed with the kiln. The screw feeder further welds a spiral structure on the spiral rod, and the glass batch fills the gaps between the spirals. As the spiral rotates, the glass batch is pushed onto the glass liquid surface in the kiln, and the spiral rotation axis is along the length of the kiln.

[0003] For example, a glass kiln feeding pipe with announcement number CN211170410U has a spiral feeder whose spiral rotation axis is along the length of the kiln, and the glass batch materials fed into the feeder fall at the same point in the vertical direction. Therefore, the glass batch materials accumulate on the glass liquid surface in the shape of a small hill, forming an extremely thick layer of material pile.

[0004] The material pile is continuously immersed in the molten glass under the influence of its own gravity and the buoyancy provided by the molten glass. However, due to the change of its own gravity during the accumulation of the material pile, the material pile collapses and accumulates periodically. The material pile sinks rapidly into the molten glass per unit time, or is not immersed in the molten glass, which causes a sharp change in temperature near the feeding port, affecting the melting speed and quality, and causing the process state of the kiln to shift.

[0005] Therefore, while ensuring the sealing between the feeder and the kiln, reducing the thickness of the material pile and ensuring the melting speed and quality are of great significance to improving the quality of glass products and stabilizing the kiln process status. Summary of the invention

[0006] The purpose of the present invention is to provide a structure for thinning the thickness of a material pile in liquid crystal glass production, which not only ensures the sealing between the material bin and the kiln when charging, but also thins the thickness of the material pile to ensure the melting speed and melting quality.

[0007] The present invention is achieved through the following technical solutions:

[0008] A structure for reducing the thickness of a material pile in the production of liquid crystal glass comprises a mounting platform, a silo is arranged on the mounting platform, the silo body comprises an inner silo shell and an outer silo shell, a cooling cavity is formed between the inner silo shell and the outer silo shell, and a cooling medium is provided in the cooling cavity by a cooling system; a level meter is provided at the batch material inlet at the upper end of the silo, and the lower end of the silo is inclined to facilitate insertion into a glass kiln; a feeding shaft is rotatably provided on the silo body at the front end of the batch material outlet of the silo, and a plurality of feeding flaps are equidistantly arranged in a ring shape on the feeding shaft, the feeding flaps are toothed structures perpendicular to the outer surface of the feeding shaft, and are formed by surfacing welding using a surfacing welding process, and the feeding shaft is driven by a transmission system; the batch material outlet end of the silo is inserted into the feeding port of the glass kiln, a sealing boss is provided on the silo shell at the contact point between the silo and the feeding port of the glass kiln, and a sealing layer is filled between the sealing boss and the feeding port of the glass kiln; a vibrating air hammer is also provided on the silo body at the inclined part of the silo.

[0009] Furthermore, the cooling cavity includes a water-cooling cavity and an air-cooling cavity. Two upper and lower independent water-cooling cavities are respectively arranged in the silo body wall at the batch material outlet, and the silo body walls of the remaining silos are connected air-cooling cavities; the cooling system includes a water cooling system and an air cooling system. The water cooling system supplies cooling water to the two parts of the water-cooling cavity by water inlet pipe I and water inlet pipe II, and the cooling water in the two parts of the water-cooling cavity is discharged by water outlet pipe I and water outlet pipe II. The air cooling system provides compressed cooling air circulation in the air-cooling cavity by air inlet pipe and air outlet pipe; the water-cooling cavity and the air-cooling cavity are not connected to each other; each pipeline is made of high-temperature resistant steel and is welded using a seamless process.

[0010] Furthermore, the mounting platform includes a mounting frame, and a height-adjustable universal wheel is provided at the bottom of the mounting frame. The height of the silo can be adjusted by adjusting the adjustment bolts of the height-adjustable universal wheel to facilitate installation; two reinforcing plates are welded on the upper part of the mounting frame, and a connecting plate is welded on the reinforcing plate. The upper end face of the connecting plate is a slope, and the slope of the connecting plate is welded to the lower slope of the silo.

[0011] Furthermore, the transmission system includes a driving motor, which is connected to a reduction gearbox. The feeding shaft is installed on the silo through a bearing. A transmission shaft is also provided on the connecting plate through a bearing. Sprockets are provided on both the feeding shaft and the transmission shaft. The sprockets on the feeding shaft and the transmission shaft are connected through a transmission chain I. The power output shaft of the reduction gearbox and the sprocket on the transmission shaft are connected through a transmission chain II.

[0012] Furthermore, the feeding port of the glass kiln is a square hole, and the feeding port of the glass kiln includes slope bricks, side bricks and bridge bricks. The slope bricks are located at the lower part of the feeding port of the glass kiln, and are inclined with a slope near the end of the kiln, which is conducive to the feeding of glass batch into the kiln. The side bricks are located on both sides of the feeding port of the glass kiln, and a semicircular groove is provided near the side of the silo for the discharge pipe of the cooling system. The bridge bricks are located at the upper part of the feeding port of the glass kiln to support the wall; the sealing layer includes block high-temperature glass fiber refractory wool, and block high-temperature glass fiber refractory wool is also filled between the bottom of the silo at the batch outlet end and the slope bricks.

[0013] Furthermore, the sealing layer includes strip-shaped high-temperature glass fiber refractory wool, which is filled between the sealing boss and the feeding port of the glass kiln. The thickness of the strip-shaped high-temperature glass fiber refractory wool is 2-2.5 times the thickness of the sealing boss to facilitate compaction.

[0014] Furthermore, the material level meter comprises an upper material level meter and a lower material level meter, and the upper material level meter and the lower material level meter are vibration level meters for detecting the upper limit height and the lower limit height of the batch material in the silo.

[0015] Furthermore, two silos are installed in parallel on a double installation platform, and the double batch material outlets are installed in the feeding ports of the double glass furnaces.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The glass batch enters the silo from the batch inlet. Under the detection and control of the upper and lower material level meters, a certain stacking density is guaranteed. At the same time, under the action of the pneumatic vibrating hammer, the possibility of empty warehouse at the bottom of the silo is reduced, and its stacking density is further guaranteed. The water-cooled cavity and the air-cooled cavity device prevent the burning of the silo and stabilize the material temperature of the glass batch. The feeding flap puts the glass batch from the silo through the batch outlet to the glass liquid surface in the kiln.

[0018] 2. By setting the sealing boss of the silo and filling the bottom of the silo with high-temperature glass fiber refractory wool, the structure of the silo and the feeding port of the glass kiln are coordinated to achieve the sealing of the silo and the kiln, avoid the escape of high-temperature flue gas, and prevent the high-temperature flue gas from condensing near the feeding port, thereby affecting the product quality and damaging the refractory material.

[0019] 3. The charging flap is arranged along the width of the kiln, so that the glass batch is laid along the entire width of the kiln. The glass batch added in unit time is consistent, and the glass batch is laid longer in the direction of the kiln width, thereby reducing the thickness of the material pile; the thinning of the material pile accelerates the melting speed of the glass batch on the glass liquid surface, eliminates the periodic collapse and accumulation of the material pile, and makes the rate of glass batch immersed in the glass melt more stable, thereby stabilizing the temperature of the glass melt near the charging port, and the kiln process state is also more stable.

[0020] In summary, by ensuring the seal between the silo and the kiln, the thickness of the material pile is reduced, and the area of ​​the glass batch material spread on the glass liquid surface is increased, the melting speed and quality can be guaranteed, thereby stabilizing the kiln process state, directly reducing the glass production cost and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the installation schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the installation of the silo of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the silo of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the sealing boss and the sealing layer of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the installation platform of the present invention;

[0026] Figure 6 is a schematic diagram of the piping arrangement of the cooling system of the present invention;

[0027] Figure 7 It is a schematic structural diagram of the transmission system of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the slope bricks, side bricks and bridge bricks of the present invention.

[0029] In the figure: 1. silo; 2. lower material level meter; 3. installation platform; 4. transmission system; 5. cooling system; 6. feeding flap; 7. silo inner shell; 8. water cooling cavity; 9. silo outer shell; 10. upper material level meter; 11. batch material inlet; 12. batch material outlet; 13. sealing boss; 14. strip high temperature glass fiber refractory wool; 15. block high temperature glass fiber refractory wool; 16. vibrating air hammer; 17. connecting plate; 18. reinforcing plate; 1 9. Mounting frame; 20. Height-adjustable universal wheel; 21. Adjusting bolt; 22. Air-cooling cavity; 23. Water outlet pipe I; 24. Water outlet pipe II; 25. Air outlet pipe; 26. Water inlet pipe I; 27. Water inlet pipe II; 28. Air inlet pipe; 29. ​​Driving motor; 30. Reducer; 31. Transmission chain I; 32. Transmission chain II; 33. Sprocket; 34. Bearing; 35. Transmission shaft; 36. Slope brick; 37. Side brick; 38. Bridge brick. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] like Figure 1 – Figure 8 As shown, in Example 1, a structure for reducing the thickness of a stock pile in the production of liquid crystal glass comprises a mounting platform 3, a silo 1 is arranged on the mounting platform 3, the silo body 1 comprises a silo inner shell 7 and a silo outer shell 9, a cooling cavity is formed between the silo inner shell 7 and the silo outer shell 9, and a cooling medium is provided to the cooling cavity by a cooling system 5; a material level meter is arranged at a batch material inlet 11 at the upper end of the silo 1, and the lower end of the silo 1 is inclined to facilitate insertion into a glass kiln; a feeding shaft is rotatably arranged on the silo body at the front end of the batch material outlet 12 of the silo 1, and a plurality of feeding flaps 6 are equidistantly arranged in an annular shape on the feeding shaft, and the feeding flaps 6 are toothed and perpendicular to the outer surface of the feeding shaft. The structure is built up by surfacing welding technology, and the feeding shaft is driven by the transmission system 4; the batch material outlet 12 end of the silo 1 is plugged into the feeding port of the glass kiln, and a sealing boss 13 is provided on the silo shell 9 where the silo 1 contacts the feeding port of the glass kiln, and a sealing layer is filled between the sealing boss 13 and the feeding port of the glass kiln; a vibrating air hammer 16 is also provided on the silo body at the inclined part of the silo 1, and the vibrating air pressure is 2-2.5bar, and the vibrating frequency is once every 30-60 seconds to ensure the stacking density of the glass batch material; the silo 1 is made of high-temperature resistant steel and welded by a seamless process; the sealing boss 13 is a square column of high-temperature resistant steel and is welded to the silo shell 9 by a welding process.

[0032] Embodiment 2, a structure for reducing the thickness of a material pile in the production of liquid crystal glass, wherein the cooling cavity comprises a water-cooling cavity 8 and an air-cooling cavity 22, two upper and lower independent water-cooling cavities 8 are respectively arranged in the wall of the silo 1 at the batch material outlet 12, and the walls of the remaining silos 1 are connected to each other as air-cooling cavities 22; the cooling system 5 comprises a water-cooling system and an air-cooling system, the water-cooling system is provided with cooling water by a water inlet pipe Ⅰ 26 and a water inlet pipe Ⅱ 27 to the two parts of the water-cooling cavity 8, and the cooling water in the two parts of the water-cooling cavity 8 is discharged by a water outlet pipe Ⅰ 23 and a water outlet pipe Ⅱ 24, and the air-cooling system is provided with a compressed air in the air-cooling cavity 22 by an air inlet pipe 28 and an air outlet pipe 25 Cooling air circulation; the water-cooling cavity 8 and the air-cooling cavity 22 are not connected to each other; each pipe is made of high-temperature resistant steel and welded by seamless process; the installation platform 3 includes a mounting frame 19, and a height-adjustable universal wheel 20 is provided at the bottom of the mounting frame 19. The height of the silo 1 can be adjusted by adjusting the adjustment bolt 21 of the height-adjustable universal wheel 20, which is convenient for installation; two reinforcing plates 18 are welded on the upper part of the mounting frame 19, and a connecting plate 17 is welded on the reinforcing plate 18. The upper end face of the connecting plate 17 is an inclined surface, and the inclined surface of the connecting plate 17 is welded to the lower inclined surface of the silo 1; the transmission system 4 includes a driving motor 29, and the driving motor 29 is connected to the reduction box 30 The feeding shaft is installed on the silo 1 through a bearing 34, and a transmission shaft 35 is also provided on the connecting plate 17 through the bearing 34. A sprocket 33 is provided on the feeding shaft and the transmission shaft 35. The sprocket 33 on the feeding shaft and the transmission shaft 35 is connected by a transmission chain Ⅰ31, and the power output shaft of the reduction box 30 and the sprocket 33 on the transmission shaft 35 are connected by a transmission chain Ⅱ32; the feeding port of the glass kiln is a square hole, and the feeding port of the glass kiln includes a slope brick 36, a side brick 37 and a bridge brick 38. The slope brick 36 is located at the lower part of the feeding port of the glass kiln, and is close to the kiln end as an inclined surface with a slope, which is conducive to the glass batch material being put into the kiln, and the side Bricks 37 are located on both sides of the feeding port of the glass furnace. A semicircular groove is provided on one side close to the silo 1 for the pipe of the cooling system 5. The bridge bricks 38 are located on the upper part of the feeding port of the glass furnace for supporting the wall. The sealing layer includes block-shaped high-temperature glass fiber refractory wool 15. Block-shaped high-temperature glass fiber refractory wool 15 is also filled between the bottom of the silo 1 at the batch outlet 12 and the slope bricks 36. The sealing layer includes strip-shaped high-temperature glass fiber refractory wool 14. The sealing boss 13 and the feeding port of the glass furnace are filled with strip-shaped high-temperature glass fiber refractory wool 14. The thickness of the strip-shaped high-temperature glass fiber refractory wool 14 is 2-2.3 times the thickness of the sealing boss 13.5 times, to facilitate compaction; the material level meter includes an upper material level meter 10 and a lower material level meter 2, the upper material level meter 10 and the lower material level meter 2 are vibrating material level meters, used to detect the upper and lower limits of the batch material in the silo 1; a double installation platform 3 is used to install two silos 1 in parallel, and the double batch material outlet 12 is installed in the feeding port of the double glass furnace. The installation and structural principles of silos A and B are the same. The glass batch material is put into the glass liquid level C in the furnace through the feeding flap 6 of silos A and B. The glass batch material is spread on the glass liquid level C to form a layer of glass batch material with a certain uniform thickness, and enters the glass melt area D. The rest is the same as Example 1. .

[0033] The rotating feeding flaps 6 can feed materials evenly, and the sealing between the silo (A, B) and the kiln is strengthened through the sealing boss 13 and supplemented by high-temperature glass fiber refractory wool filling; the feeding flaps 6 are arranged along the width of the kiln, so that the glass batch material is laid on the entire width of the kiln, the thickness of the material pile is thinned, and the area of ​​the glass batch material laid flat on the glass liquid surface C is increased. The thinning of the material pile thickness can reduce heat loss, increase the kiln temperature, and thin the thickness of the stable material layer, thereby stabilizing the melting rate of the batch material, directly reducing the glass production cost, stabilizing the process state, and improving product quality.

[0034] The glass batch enters the silo 1 from the batch inlet 11. Under the detection and control of the upper and lower material level meters, a certain stacking density is guaranteed. At the same time, under the action of the pneumatic vibrating hammer 16, the possibility of the lower part of the silo 1 being empty is reduced, and its stacking density is further guaranteed. The water-cooled cavity 8 and the air-cooled cavity 22 are provided to prevent the silo 1 from burning and stabilize the material temperature of the glass batch. The feeding flap 6 rotates counterclockwise under the action of the transmission device, and the gaps between the flaps are filled with glass batch. As the feeding flap 6 rotates, the glass batch between the gaps of the flaps is put from the silo 1 through the batch outlet 12 onto the glass liquid surface in the kiln.

[0035] By setting the silo sealing boss 13 and filling the bottom of the silo with high-temperature glass fiber refractory wool, the silo 1 and the glass furnace are sealed by the structure of the feeding port, avoiding the escape of high-temperature flue gas and preventing the high-temperature flue gas from condensing near the feeding port, thereby affecting the product quality and damaging the refractory material.

[0036] The charging flap 6 is arranged along the kiln width direction, so that the glass batch material is laid along the entire kiln width direction, the glass batch material added in a unit time is consistent, and the glass batch material is laid longer in the kiln width direction, thereby reducing the thickness of the material pile. The thinning of the material pile accelerates the melting speed of the glass batch material on the glass liquid surface, eliminates the periodic collapse and accumulation of the material pile, and makes the rate of the glass batch material immersed in the glass melt more stable, thereby stabilizing the temperature of the glass melt near the charging port, and the kiln process state is also more stable.

Claims

1. A structure for reducing the thickness of a stock pile in the production of liquid crystal glass, comprising a mounting platform (3), on which a material bin (1) is arranged, characterized in that: The silo (1) comprises a silo inner shell (7) and a silo outer shell (9), a cooling cavity is formed between the silo inner shell (7) and the silo outer shell (9), and a cooling medium is provided in the cooling cavity by a cooling system (5); a material level meter is provided at the batch material inlet (11) at the upper end of the silo (1), and the lower end of the silo (1) is inclined; a feeding shaft is rotatably provided on the silo body at the front end of the batch material outlet (12) of the silo (1), and a plurality of feeding flaps (6) are equidistantly provided in an annular shape on the feeding shaft, and the feeding shaft is driven by a transmission system (4); the batch material outlet (12) of the silo (1) is plugged into the feeding port of the glass kiln, a sealing boss (13) is provided on the silo outer shell (9) at the contact point between the silo (1) and the feeding port of the glass kiln, and a sealing layer is filled between the sealing boss (13) and the feeding port of the glass kiln; a vibrating air hammer (16) is also provided on the silo body at the inclined part of the silo (1).

2. The structure for reducing the thickness of a material pile in the production of liquid crystal glass according to claim 1, characterized in that: The cooling cavity comprises a water-cooling cavity (8) and an air-cooling cavity (22). Two upper and lower independent water-cooling cavities (8) are respectively arranged in the silo body wall of the silo (1) at the batch material outlet (12), and the silo body walls of the remaining silos (1) are connected air-cooling cavities (22); the cooling system (5) comprises a water-cooling system and an air-cooling system. The water-cooling system supplies cooling water to the two parts of the water-cooling cavity (8) through a water inlet pipe I (26) and a water inlet pipe II (27), and discharges the cooling water in the two parts of the water-cooling cavity (8) through a water outlet pipe I (23) and a water outlet pipe II (24). The air-cooling system provides compressed cooling air circulation in the air-cooling cavity (22) through an air inlet pipe (28) and an air outlet pipe (25).

3. The structure for reducing the thickness of a material pile in the production of liquid crystal glass according to claim 1, characterized in that: The mounting platform (3) comprises a mounting frame (19), the bottom of which is provided with a height-adjustable universal wheel (20), and the height of the silo (1) is adjusted by means of an adjusting bolt (21) of the height-adjustable universal wheel (20); two reinforcing plates (18) are welded on the upper part of the mounting frame (19), a connecting plate (17) is welded on the reinforcing plate (18), the upper end face of the connecting plate (17) is an inclined surface, and the inclined surface of the connecting plate (17) is welded to the lower inclined surface of the silo (1).

4. The structure for reducing the thickness of a material pile in the production of liquid crystal glass according to claim 3, characterized in that: The transmission system (4) comprises a driving motor (29), the driving motor (29) is connected to a reduction box (30), a feeding shaft is mounted on the silo (1) via a bearing (34), a transmission shaft (35) is further provided on the connecting plate (17) via the bearing (34), a sprocket (33) is provided on both the feeding shaft and the transmission shaft (35), the feeding shaft and the sprocket (33) on the transmission shaft (35) are connected via a transmission chain I (31), and a power output shaft of the reduction box (30) and the sprocket (33) on the transmission shaft (35) are connected via a transmission chain II (32).

5. The structure for reducing the thickness of a stock pile in the production of liquid crystal glass according to claim 1, characterized in that: The feeding port of the glass kiln is a square hole, and the feeding port of the glass kiln includes a slope brick (36), a side brick (37) and a bridge brick (38). The slope brick (36) is located at the lower part of the feeding port of the glass kiln, and is a slope with a slope near the kiln end. The side bricks (37) are located on both sides of the feeding port of the glass kiln. A semicircular groove is provided on the side close to the silo (1) for the drain pipe of the cooling system (5). The bridge brick (38) is located at the upper part of the feeding port of the glass kiln. The sealing layer includes block high-temperature glass fiber refractory wool (15), and block high-temperature glass fiber refractory wool (15) is also filled between the bottom of the silo (1) at the batch material outlet (12) end and the slope brick (36).

6. The structure for reducing the thickness of a material pile in the production of liquid crystal glass according to claim 1, characterized in that: The sealing layer comprises strip-shaped high-temperature glass fiber refractory wool (14), and the space between the sealing boss (13) and the feeding port of the glass furnace is filled with strip-shaped high-temperature glass fiber refractory wool (14), and the thickness of the strip-shaped high-temperature glass fiber refractory wool (14) is 2-2.5 times the thickness of the sealing boss (13).

7. The structure for reducing the thickness of a material pile in the production of liquid crystal glass according to claim 1, characterized in that: The material level meter comprises an upper material level meter (10) and a lower material level meter (2), wherein the upper material level meter (10) and the lower material level meter (2) are vibration type material level meters, and are used to detect the upper limit height and the lower limit height of the batch material in the silo (1).

8. The structure for reducing the thickness of a material pile in the production of liquid crystal glass according to claim 1, characterized in that: Two material bins (1) are installed in parallel on a double installation platform (3), and the double batch material outlet (12) is installed in the feeding port of the double glass furnace.

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