A double-flow liquid hole structure for a glass electric melting furnace

Abstract

The present invention relates to the technical field of electric melting furnaces, and in particular to a double-flow liquid hole structure of a glass electric melting furnace, comprising two flow liquid holes opened at the lower part of the inner wall of the melting pool of the electric melting furnace, each of the flow liquid holes being connected to a flow channel, a high-grade refractory brick being arranged at the entrance of the flow liquid hole, a cover plate of the flow channel being a double-layer structure, and a plurality of sprayers being embedded and installed on the inner wall of the flow channel. The present invention reduces the speed of the high-temperature glass liquid entering the flow liquid hole by 50% by adopting a double-flow liquid hole structure. The erosion speed of the high-temperature glass liquid on the refractory material of the flow liquid hole is reduced; after the refractory material of the flow liquid hole cover plate is partially eroded by the sedimentation-type flow liquid hole, the distance between the unqualified glass liquid in the melting area of ​​the melting pool and the flow liquid hole channel is still maintained at a safe distance; and a plurality of sprayers are also arranged in the flow channel, and refractory coating can be sprayed toward the inner wall of the flow channel when the electric melting furnace is shut down for maintenance, so that the eroded refractory material surface layer of the inner wall of the flow channel can be repaired.

Description

Technical Field

[0001] The invention relates to the technical field of electric melting furnaces, and in particular to a double-flow liquid hole structure of a glass electric melting furnace. Background Art

[0002] At present, since the introduction of glass electric melting furnaces into China in the 1980s, along with the theoretical research of scientific and technological workers and the practical experience of production practitioners, because of the use of clean energy, electric melting furnaces are now used in industrial glass, electronic glass, daily glass and other fields, and the market share of glass electric melting furnaces is gradually expanding. However, it has been constrained by the small daily output of single kilns, which has hindered its development. In response to market demand, the demand for glass electric melting furnaces has gradually expanded to a daily output of more than 80 tons to meet market demand.

[0003] At present, the domestic electric glass melting furnace can produce about 60 tons of glass liquid per day, and the quality of the produced glass liquid is relatively good. However, when the daily output of glass liquid is more than 60 tons, the quality of the glass liquid is difficult to guarantee, and defects such as bubbles, stones, furnace life, and glass liquid quality stability will appear. The reasons are: ① When the daily output of glass liquid increases, the melting pool area of ​​the furnace also expands. The speed of high-temperature glass liquid passing through the flow hole increases exponentially with the increase of daily feed volume and flow rate, but the cross-sectional area of ​​the flow hole is limited, resulting in the high-temperature glass liquid eroding the refractory material of the flow hole at a faster speed. The flow hole is the core part of the glass electric melting furnace, and its life determines the life of the furnace. How to reduce the flow rate of high-temperature molten glass passing through the flow hole is the core of the current research; ② The high-temperature molten glass erodes the flow hole faster, which causes the erosion of the flow hole to be accelerated due to the refractory material of the cover plate. The height of the flow hole increases, and the distance from the clarification and homogenization area of ​​the molten glass in the melting pool to the flow hole will gradually decrease, resulting in an increased possibility of substandard molten glass entering the flow hole, affecting the stability of the molten glass quality; ③ Super-large tonnage requires the area of ​​the melting pool to be gradually increased, and the electrodes need to be arranged in multiple groups and multiple phases to meet the uniformity of the high-temperature area and meet the melting requirements. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcoming in the prior art that the refractory materials in the flow hole and the flow channel will be corroded too quickly, and to propose a double flow hole structure for a glass electric melting furnace.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A double-flow liquid hole structure of a glass electric melting furnace is designed, comprising two flow liquid holes opened at the lower part of the inner wall of the melting pool of the electric melting furnace, each of the flow liquid holes is connected to a flow channel, a high-grade refractory brick is arranged at the entrance of the flow liquid hole, the cover plate of the flow channel is a double-layer structure, and a plurality of sprayers are embedded and installed on the inner wall of the flow channel;

[0007] The sprayer comprises a fixed cylinder, a sleeve is fixed at the bottom end of the fixed cylinder, the inner cavity of the lower part of the sleeve is semi-spherical, a sphere is embedded in the lower part of the sleeve, a horizontally arranged positioning shaft coaxially penetrates the sphere, the positioning shaft is fixed on the sleeve, a plurality of spray holes are provided at the top of the sphere, a confluence cavity is provided on the inner wall of the adjacent sphere, the spray holes are communicated with the confluence cavity, a docking hole is provided at the bottom of the sphere, a diversion cavity is provided on the inner wall of the adjacent sphere, the diversion cavity is coaxially arranged and communicated with the docking hole, and the diversion cavity and the confluence cavity are communicated through a plurality of diversion channels; a feed pipe is also coaxially fixed in the fixed cylinder above the top of the sphere, the bottom end of the feed pipe covers the top of the sphere, and the feed pipe is used to connect the refractory coating supply device; a driving mechanism is also installed in the fixed cylinder, and the driving mechanism is used to drive the sphere to rotate around the positioning axis, so that the spray holes on the sphere can extend out of the fixed cylinder and the docking hole can dock with the feed pipe.

[0008] Preferably, the diverter cavity is in a frustum shape, and the small diameter end of the diverter cavity is arranged toward the docking hole, and the inner diameter of the docking hole is less than or equal to the minimum inner diameter of the diverter cavity, and a telescopic groove is coaxially opened on the inner wall of the large diameter end of the diverter cavity, and a sealing plug is telescopically installed in the telescopic groove, and the outer diameter of the sealing plug is equal to the inner diameter of the docking hole, so that the sealing plug can be extended into the docking hole;

[0009] An exhaust duct is coaxially opened on the positioning shaft, a first through hole corresponding to the exhaust duct is opened at the bottom of the telescopic groove, and a second through hole corresponding to the first through hole is also opened on the positioning shaft, the second through hole is connected to the exhaust duct, and the exhaust duct is connected to the outside world, so that when the sealing plug is extended or retracted, the gas in the telescopic groove can be connected to the outside world through the exhaust duct.

[0010] Preferably, the sphere is made of high temperature resistant metal.

[0011] Preferably, it further comprises top inserted electrodes and bottom inserted electrodes, wherein the number of the top inserted electrodes is 24 and they are evenly arranged in a circle at an angle of 30°, and the number of the bottom inserted electrodes is evenly arranged in a circle at an angle of 60°.

[0012] Preferably, the driving mechanism comprises a motor and a driving wheel, the driving wheel is coaxially fixed to the output shaft of the motor, and the driving wheel is in close contact with the surface of the sphere, so that the driving wheel can drive the sphere to rotate by friction when driven by the motor;

[0013] A first annular groove is provided on the inner wall of the lower inner cavity of the sheath, and the first annular groove is coaxially distributed with the sphere. A second annular groove is coaxially provided on the sphere, and the second annular groove is arranged corresponding to the first annular groove. An annular airbag is embedded and installed in the second annular groove, and the annular airbag is connected to an air pumping assembly, and the air pumping assembly is used to pump air into the annular airbag so that the inflated annular airbag can fill the first annular groove;

[0014] The pumping assembly is drivingly connected to the driving wheel.

[0015] Preferably, the inflation component includes an air pressure groove, the surface of the sphere is provided with an air pressure groove, a piston is coaxially and telescopically installed in the air pressure groove, a first magnet is embedded in the piston, and an air guide channel for connecting the annular airbag and the air pressure groove is also provided inside the sphere, a flat section is axially provided at the edge of the driving wheel, a second magnet is fixed on the flat section, and the second magnet and the first magnet repel each other.

[0016] Preferably, a cover body is fixed at the outer opening of the air pressure groove, and a plurality of air holes are formed through the surface of the cover body.

[0017] The double-flow liquid hole structure of a glass electric melting furnace proposed by the present invention has the following beneficial effects: the double-flow liquid hole structure is adopted to reduce the speed of high-temperature glass liquid entering the flow hole by 50%. The erosion speed of high-temperature glass liquid on the refractory material of the flow hole is reduced; the sedimentation-type flow hole allows the refractory material of the flow hole cover to be partially eroded, and the distance between the unqualified glass liquid in the melting area of ​​the melting pool and the flow hole channel is still maintained at a safe distance; at the same time, the flow channel cover is a double-layer refractory material structure, so that there are three layers of dense layers facing the high-temperature glass liquid, which can effectively resist the erosion of high-temperature and high-speed glass liquid; high-grade refractory bricks are arranged at the entrance of the flow hole, which reduces the erosion speed of high-temperature and high-speed glass by about 20%; multiple sprayers are also arranged in the flow channel, which can spray refractory coatings on the inner wall of the flow channel when the electric melting furnace is shut down for maintenance, so that the eroded refractory surface layer of the inner wall of the flow channel can be repaired. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of an electric melting furnace with a double-flow liquid hole structure;

[0019] Figure 2 for Figure 1 Schematic diagram of the X-section structure;

[0020] Figure 3 A schematic diagram of the sprayer position of a double-flow liquid hole structure of a glass electric melting furnace proposed by the present invention;

[0021] Figure 4 A schematic diagram of a sprayer structure of a double-flow liquid hole structure for a glass electric melting furnace proposed by the present invention;

[0022] Figure 5 Schematic diagram of the internal structure of a sprayer with a double-flow liquid hole structure for a glass electric melting furnace proposed by the present invention Figure 1 ;

[0023] Figure 6 A schematic cross-sectional view of the interior of a sprayer with a double-flow liquid hole structure for a glass electric melting furnace proposed by the present invention Figure 1 ;

[0024] Figure 7 Schematic diagram of the internal structure of a sprayer with a double-flow liquid hole structure for a glass electric melting furnace proposed by the present invention Figure 2 ;

[0025] Figure 8 A schematic cross-sectional view of the interior of a sprayer with a double-flow liquid hole structure for a glass electric melting furnace proposed by the present invention Figure 2 ;

[0026] Fig. 9 A schematic diagram of the working principle of an annular air bag with a double-flow liquid hole structure of a glass electric melting furnace proposed by the present invention;

[0027] Figure 10-12 A schematic diagram of the working principle of a sphere of a double-flow liquid hole structure of a glass electric melting furnace proposed by the present invention.

[0028] In the figure: 1, top-inserted electrode; 2, melting pool; 3, cover plate; 4, high-grade refractory brick; 5, bottom-inserted electrode; 6, flow hole; 7, flow channel; 8, sprayer; 81, fixing cylinder; 82, sheath; 83, sphere; 84, positioning shaft; 85, diverter cavity; 86, docking hole; 87, confluence cavity; 88, spray hole; 89, diverter channel; 810, telescopic groove; 811, sealing plug; 813, first through hole; 814, second through hole; 815, Exhaust duct; 816, third through hole; 817, docking channel; 818, air inlet pipe; 819, connecting ring; 820, feed pipe; 821, nozzle; 822, spray hole; 823, feed pipe; 824, annular air bag; 825, second annular groove; 826, first annular groove; 827, compressed air groove; 828, air guide duct; 829, piston; 830, cover body; 831, drive wheel; 832, motor; 833, second magnet. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Example 1

[0031] Reference Figure 1-12A double liquid flow hole structure of a glass electric melting furnace includes two liquid flow holes 6 opened at the lower part of the inner wall of a melting pool 2 of the electric melting furnace. The liquid flow hole 6 is a sedimentation type, and the sedimentation height is less than 300mm. Each liquid flow hole 6 is connected to a flow channel 7. A high-grade refractory brick 4 is arranged at the entrance of the liquid flow hole 6. The cover plate 3 of the flow channel 7 is a double-layer structure, and a plurality of sprayers 8 are embedded and installed on the inner wall of the flow channel 7. The melting pool adopts a double liquid flow hole structure, so that the high-temperature glass liquid flows out from the two flow channels 7, and the high-temperature glass liquid flowing through the liquid flow hole 6 is divided into two parts, thereby reducing the flow rate flowing through the liquid flow hole 6 and reducing the scouring of the refractory material of the liquid flow hole 6 by the high-temperature glass liquid, thereby ensuring the life of the key parts of the kiln and stabilizing the quality of the liquid. At the same time, the double-layer refractory material of the flow hole 6 cover plate 3 allows the dense layer facing the high-temperature glass liquid to have three layers of refractory materials during the sintering process. The surface to 50mm position is the densest layer, which can effectively resist the erosion of high-temperature and high-speed glass liquid; the flow hole 6 inlet cover plate 3 is provided with high-grade refractory bricks 4, which reduces the erosion rate of high-temperature and high-speed glass by about 20%. The entire sprayer 8 is made of high-temperature resistant materials.

[0032] The electrodes in the electric melting furnace are arranged as top-inserted electrodes 1 and bottom-inserted electrodes 5. There are 24 top-inserted electrodes 1, which are evenly arranged in a circle at an angle of 30°, and the bottom-inserted electrodes 5 are evenly arranged in a circle at an angle of 60°. When the glass starts to enter the melting pool 2 as powder, it is melted in the melting zone by the "Joule effect" method using 12 groups of 24 top-inserted electrodes 1 evenly distributed at an angle of 30°. Because the top-inserted electrodes 1 are evenly distributed in a plane circle, all the molten glass in the melting pool 2 is effectively taken care of, allowing it to be evenly heated. In this way, impurities such as bubbles and stones in the molten glass can be effectively removed, allowing the molten glass to become qualified molten glass that can be produced and molded. Because the temperature of the molten glass at this time is relatively high, about 1500°C, it is not conducive to the molding operation of the molten glass. Then the molten glass continues to sink and move downward into the homogenization zone at the bottom of the melting pool 2. In the glass liquid in the area The bubbles below are dissolved and absorbed, the temperature drops, and the components are homogenized. At this time, the bottom electrode 5 provides part of the heat source, so that the glass liquid in this area has a temperature that can absorb the bubbles, and the local heat source makes the glass more homogenized. At this time, the glass liquid reaches the molding standard.

[0033] The sprayer 8 includes a fixed cylinder 81, a sleeve 82 is fixed at the bottom end of the fixed cylinder 81, the inner cavity of the lower part of the sleeve 82 is semi-spherical, a sphere 83 is embedded in the lower part of the sleeve 82, a horizontally arranged positioning shaft 84 coaxially penetrates the sphere 83, the positioning shaft 84 is fixed on the sleeve 82, a plurality of spray holes 88 are opened on the top of the sphere 83, a confluence cavity 87 is opened on the inner wall of the adjacent sphere 83, the spray holes 88 are connected with the confluence cavity 87, a docking hole 86 is opened at the bottom of the sphere 83, a diversion cavity 85 is opened on the inner wall of the adjacent sphere 83, the diversion cavity 85 is coaxially arranged and connected with the docking hole 86, and the diversion cavity 85 is connected with the confluence cavity 87 through a plurality of diversion channels 89; a feed pipe 823 is also coaxially fixed in the fixed cylinder 81 above the top of the sphere 83, the bottom end of the feed pipe 823 covers the top of the sphere 83, and the feed pipe 823 is used to connect the refractory coating supply device. The sphere 83 is made of high temperature resistant metal. The inner walls of the diversion chamber 85, the docking hole 86, the confluence chamber 87, the spray hole 88, and the diversion channel 89 are all provided with an anti-stick coating. The anti-stick coating can prevent the paint from sticking and causing blockage. A driving mechanism is also installed in the fixed cylinder 81, and the driving mechanism is used to drive the sphere 83 to rotate around the positioning shaft 84, so that the spray hole 88 on the sphere 83 can extend out of the fixed cylinder 81 and the docking hole 86 can dock with the feed pipe 823.

[0034] The shunt cavity 85 is in a frustum shape, and the small diameter end of the shunt cavity 85 is arranged toward the docking hole 86, and the inner diameter of the docking hole 86 is less than or equal to the minimum inner diameter of the shunt cavity 85. A telescopic groove 810 is coaxially opened on the inner wall of the large diameter end of the shunt cavity 85, and a sealing plug 811 is telescopically installed in the telescopic groove 810. The outer diameter of the sealing plug 811 is equal to the inner diameter of the docking hole 86, so that the sealing plug 811 can be extended into the docking hole 86; by setting the sealing plug 811, when there is no external force, the sealing plug 811 can be inserted into the docking hole 86. When in use, the sealing plug 811 extends into the docking hole 86, thereby sealing the docking hole 86 to prevent the entry of high-temperature liquid. Only when the docking hole 86 is aligned with the feed pipe 823, the sealing plug 811 is pushed open by the pressure of the paint in the feed pipe 823. At this time, the docking hole 86 and the diverter cavity 85 can be connected, and the entered paint can enter the diverter cavity 85, and then enter the confluence cavity 87 through the diverter channel 89, and finally be sprayed out through the plurality of spray holes 88 on the confluence cavity 87.

[0035] An exhaust duct 815 is coaxially opened on the positioning shaft 84, a first through hole 813 corresponding to the exhaust duct 815 is opened at the bottom of the expansion slot 810, and a second through hole 814 corresponding to the first through hole 813 is also opened on the positioning shaft 84, the second through hole 814 is connected to the exhaust duct 815, and the exhaust duct 815 is connected to the outside, so that when the sealing plug 811 is extended or retracted, the gas in the expansion slot 810 can be connected to the outside through the exhaust duct 815. In order to allow the gas in the expansion groove 810 to flow normally during the expansion and contraction of the sealing plug 811, a second through hole 814 and an exhaust duct 815 are provided on the positioning shaft 84; and because the positioning shaft 84 cannot rotate, during the rotation of the sphere 83, the expansion groove 810 can only be connected with the exhaust duct 815 when the first through hole 813 at the bottom of the expansion groove 810 is aligned with the second through hole 814 on the positioning shaft 84. In this way, in the case of misalignment, since the gas in the expansion groove 810 is difficult to compress, the sealing plug 811 can remain extended into the docking hole 86, so that the sealing plug 811 will not be pushed open by the high-temperature liquid.

[0036] A spray kit is also provided in the fixed cylinder 81 above the sphere 83, and the spray kit is used to connect to the refractory coating supply device to spray the refractory coating on the surface of the sphere 83; the contact surface of the sphere 83 with the high-temperature liquid may be corroded, so spraying it can extend its service life.

[0037] The spray kit includes a connecting ring 819, which is a hollow design. The connecting ring 819 is sleeved on the feeding pipe 823. A plurality of nozzles 821 are arranged along the circumference on the lower surface of the connecting ring 819. A plurality of feed pipes 820 are arranged along the circumference on the upper surface of the connecting ring 819. An air inlet pipe 818 is arranged on the side wall of the connecting ring 819. The air inlet pipe 818 is connected to the exhaust channel 815 on the positioning shaft 84. The sheath 82 is provided with a docking channel 817. The positioning shaft 84 is provided with a third through hole 816 connected to the docking channel 817. The air inlet pipe 818 is inserted into the docking channel 817 and connected thereto. The feed pipe 820 and the nozzle 821 are arranged one by one so that the paint falling through the feed pipe 820 can directly fall into the nozzle 821. The amount of paint that falls into the nozzle 821 through the feed pipe 820 at a time is small, so that the nozzle 821 can spray the paint in a single spraying process, and a one-way valve is also provided in the feed pipe 820 to prevent the gas from flowing back into the feed pipe 820. A one-way valve is also provided in the air intake pipe 818 to prevent the gas or paint from flowing back into the air intake pipe 818.

[0038] When the sealing plug 811 in the telescopic groove 810 is pushed open, when the first through hole 813 is aligned with the second through hole 814, the gas in the telescopic groove 810 is squeezed into the exhaust passage 815 in the positioning shaft 84 by the sealing plug 811, and then enters the air inlet pipe 818 through the third through hole 816 and the docking passage 817, and finally sprayed into the inner cavity of the connecting ring 819 through the air inlet pipe 818. At this time, since a one-way valve is provided in the feed pipe 820 at the upper part of the connecting ring 819, the injected gas can only be sprayed out through the nozzle 821 at the lower part of the connecting ring 819. Since the sealing plug 811 is suddenly pushed open, the injected gas speed is very fast, so that the spray material in the spray hole 822 on the nozzle 821 can be dispersed into small particles by the air and then quickly sprayed onto the surface of the sphere 83. Therefore, the surface of the sphere 83 can be evenly sprayed with paint.

[0039] The nozzle 821 is tilted toward the feeding pipe 820 as a whole, and a plurality of spray holes 822 are provided on the lower surface of the nozzle 821 body. The tilted nozzle 821 allows the paint flowing into the nozzle 821 to flow toward the nozzle 821 under the action of gravity, and the aperture of the spray holes 822 is small, so that the paint gradually fills the spray holes 822 during the flow process. Without the action of external force, the liquid tension cannot flow out of the spray holes 822 quickly. Only when gas is introduced, the liquid in the spray holes 822 can be suddenly sprayed out from the spray holes 88.

[0040] Example 2

[0041] Reference Figure 6 , 9 As another preferred embodiment of the present invention, the difference from Embodiment 1 is that the driving mechanism includes a motor 832 and a driving wheel 831. The driving wheel 831 is coaxially fixed on the output shaft of the motor 832. The driving wheel 831 is in close contact with the surface of the ball 83, so that the driving wheel 831 can drive the ball 83 to rotate by friction under the drive of the motor 832; the surface of the driving wheel 831 is made of wear-resistant rubber material, so that it can obtain greater friction when in contact with the ball 83, and is more wear-resistant. Since the ball 83 is in contact with the high-temperature liquid at a high temperature, the driving wheel 831 is used for friction driving, so that the driving wheel 831 and the ball 83 can obtain a smaller contact area, thereby reducing heat transfer to protect the motor 832.

[0042] A first annular groove 826 is provided on the inner wall of the lower part of the inner cavity of the sheath 82, and the first annular groove 826 is coaxially distributed with the sphere 83. A second annular groove 825 is provided coaxially on the sphere 83, and the second annular groove 825 is arranged corresponding to the first annular groove 826. An annular airbag 824 is embedded and installed in the second annular groove 825, and the annular airbag 824 is connected to an air pumping assembly, which is used to pump air into the annular airbag 824 so that the expanded annular airbag 824 can fill the first annular groove 826. The annular airbag 824 is provided because there is a small gap between the sphere 83 and the inner wall of the sheath 82. Therefore, when the first annular groove 826 and the second annular groove 825 are in an aligned state, the annular airbag 824 can fill the first annular groove 826 in the inflated state, and the gap between the sphere 83 and the inner wall of the sheath 82 can be sealed by virtue of the high pressure state of the gas in the airbag.

[0043] The pumping assembly is connected to the driving wheel 831 in a transmission manner.

[0044] The pumping assembly includes a compressed air groove 827, a compressed air groove 827 is provided on the surface of the sphere 83, a piston 829 is coaxially and telescopically installed in the compressed air groove 827, a first magnet is embedded in the piston 829, and an air guide 828 for connecting the annular air bag 824 and the compressed air groove 827 is provided inside the sphere 83, and a flat section is provided along the axial direction at the edge of the driving wheel 831, and a second magnet 833 is fixed on the flat section, and the second magnet 833 and the first magnet repel each other. When the pumping assembly is in use, since the second magnetic body is set on the driving wheel 831, during the rotation of the sphere 83, only the first magnet on it corresponds to the second magnet 833 on the driving wheel 831. At this time, the first magnet, under the action of magnetic force, will drive the piston 829 to move, so that the piston 829 presses the gas in the compressed air groove 827 into the annular air bag 824 through the air guide 828, so that the automatic pumping of the pumping assembly can be realized with the help of the driving mechanism. And because the second magnet 833 is arranged on the plane section of the driving wheel 831, during the alignment process of the second magnet 833 and the first magnet, the driving wheel 831 does not contact the sphere 83, so that the sphere 83 does not rotate. In this way, the second magnet 833 and the first magnet can have sufficient time to align. When they are fully aligned, the motor 832 is stopped, so that the first magnet will maintain a compressed state with the piston 829, thereby allowing the annular airbag 824 to remain in an expanded state.

[0045] A cover 830 is fixed at the outer opening of the compressed air groove 827, and a plurality of air holes are formed on the surface of the cover. Since the driving wheel 831 and the ball 83 need to maintain contact, a cover is fixed at the outer opening of the compressed air groove 827 to provide a contact point with the driving wheel 831, so that friction can be generated between the two.

[0046] The overall workflow of the present invention is as follows:

[0047] Two flow holes 6 opened at the lower part of the melting pool allow the high-temperature molten glass to flow out from the two flow channels 7 at the same time, so that the high-temperature molten glass flowing through the flow hole 6 is divided into two parts, reducing its flow through the flow hole 6 and reducing the erosion of the high-temperature molten glass on the refractory materials of the flow hole 6, thereby ensuring the life of key parts of the kiln and stabilizing the quality of the liquid. At the same time, the cover plate 3 in the flow channel 7 is a double-layer structure, so that the dense layer facing the high-temperature molten glass has three layers of refractory materials. During the sintering process, the surface layer to 50mm position is the densest layer, which can effectively resist the erosion of high-temperature and high-speed molten glass; high-grade refractory bricks 4 are arranged at the entrance of the flow hole 6, which reduces the erosion rate of high-temperature and high-speed glass by about 20%.

[0048] In addition, a plurality of sprayers 8 are arranged in the flow channel 7. When the electric melting furnace is shut down for maintenance, the sprayers 8 can spray refractory coatings toward the inner wall of the flow channel 7, so that the eroded refractory surface layer of the inner wall of the flow channel 7 can be repaired:

[0049] The sprayer 8 is in the initial state as shown in the attached Fig.10 As shown, the docking hole 86 on the sphere 83 is turned to the flow channel 7. At this time, the annular airbag 824 is in an expanded state, so that the gap between the sphere 83 and the sleeve 82 is effectively sealed, preventing the infiltration of high-temperature liquid, and because the first through hole 813 at the bottom of the telescopic groove 810 is not aligned with the second through hole 814 on the positioning shaft 84, the sealing plug 811 cannot be extended and retracted, so that the sealing plug 811 will not be pushed open by the high-temperature liquid in the flow channel 7; when it is necessary to spray the flow channel 7, the motor 832 is started at this time, and the motor 832 rotates through the driving wheel 831. During the rotation of the driving wheel 831, the second magnet 833 thereon will first be offset from the first magnet on the piston in the compressed air groove 827, so that the piston in the compressed air groove 827 is reset, and then the contraction process of the annular airbag 824 is as shown in the attached figure. Fig. 9 As shown, the driving wheel 831 can drive the ball 83 to rotate; when the docking hole 86 on the ball 83 rotates to align with the feed pipe 823, and the spray hole 88 rotates to the outside of the fixed cylinder 81, as shown in the attached Fig.11 Then the paint supply device is started, and the paint supply device inputs the paint into the feed pipe 823. Fig.12 As shown, the paint sprayed out of the feed pipe 823 will push down the sealing plug 811 in the docking hole 86. At this time, since the first through hole 813 at the bottom of the telescopic groove 810 is aligned with the second through hole 814 on the positioning shaft 84, the sealing plug 811 can move down in the telescopic groove 810 until the sealing plug 811 moves out of the docking hole 86. Then the paint enters the diverter chamber 85, and then enters the confluence chamber 87 through the diverter channel 89, and finally is sprayed toward the inner wall of the flow channel 7 through the spray hole 88 on the confluence chamber 87. After spraying is completed, the sphere 83 is reset to its initial state.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-flow liquid hole structure for a glass electric melting furnace, characterized in that: The invention comprises two liquid flow holes (6) provided at the lower part of the inner wall of the melting pool of the electric melting furnace, each of the liquid flow holes (6) is connected to a flow channel (7), a high-grade refractory brick (4) is arranged at the entrance of the liquid flow hole (6), a cover plate (3) of the flow channel (7) is a double-layer structure, and a plurality of sprayers (8) are embedded and installed on the inner wall of the flow channel (7); The sprayer (8) comprises a fixed cylinder (81), a sleeve (82) is fixed at the bottom end of the fixed cylinder (81), the inner cavity of the lower part of the sleeve (82) is semi-spherical, a sphere (83) is embedded in the lower part of the sleeve (82), a horizontally arranged positioning shaft (84) coaxially passes through the sphere (83), the positioning shaft (84) is fixed on the sleeve (82), a plurality of spray holes (88) are opened on the top of the sphere (83), a confluence cavity (87) is opened on the inner wall of the adjacent sphere (83), the spray hole (88) is connected with the confluence cavity (87), a docking hole (86) is opened on the bottom of the sphere (83), a diversion cavity (85) is opened on the inner wall of the adjacent sphere (83), the The flow dividing chamber (85) and the docking hole (86) are coaxially arranged and communicated, and the flow dividing chamber (85) and the flow converging chamber (87) are communicated through a plurality of flow dividing channels (89); a feed pipe (823) is coaxially fixed in the fixed cylinder (81) above the top of the sphere (83), and the bottom end of the feed pipe (823) covers the top of the sphere (83), and the feed pipe (823) is used to communicate with a refractory coating supply device; a driving mechanism is also installed in the fixed cylinder (81), and the driving mechanism is used to drive the sphere (83) to rotate around the positioning axis (84), so that the spray hole (88) on the sphere (83) can extend out of the fixed cylinder (81) and the docking hole (86) can dock with the feed pipe (823); The diverter cavity (85) is in a frustum shape, and the small diameter end of the diverter cavity (85) is arranged toward the docking hole (86), and the inner diameter of the docking hole (86) is less than or equal to the minimum inner diameter of the diverter cavity (85). A telescopic groove (810) is coaxially opened on the inner wall of the large diameter end of the diverter cavity (85), and a sealing plug (811) is telescopically installed in the telescopic groove (810), and the outer diameter of the sealing plug (811) is equal to the inner diameter of the docking hole (86), so that the sealing plug (811) can be extended into the docking hole (86); An exhaust duct (815) is coaxially opened on the positioning shaft (84), a first through hole (813) corresponding to the exhaust duct (815) is opened at the bottom of the telescopic groove (810), and a second through hole (814) corresponding to the first through hole (813) is also opened on the positioning shaft (84), the second through hole (814) is connected to the exhaust duct (815), and the exhaust duct (815) is connected to the outside, so that when the sealing plug (811) is extended or retracted, the gas in the telescopic groove (810) can be connected to the outside through the exhaust duct (815).

2. The double-flow liquid hole structure of the glass electric melting furnace according to claim 1, characterized in that: The sphere (83) is made of high temperature resistant metal.

3. The double-flow liquid hole structure of the glass electric melting furnace according to claim 1, characterized in that: It also comprises top inserted electrodes (1) and bottom inserted electrodes (5), wherein the top inserted electrodes (1) are 24 in number and are evenly arranged in a circle at an angle of 30°, and the bottom inserted electrodes (5) are evenly arranged in a circle at an angle of 60°.

4. The double-flow liquid hole structure of the glass electric melting furnace according to claim 1, characterized in that: The driving mechanism comprises a motor (832) and a driving wheel (831); the driving wheel (831) is coaxially fixed to the output shaft of the motor (832); the driving wheel (831) is in close contact with the surface of the ball (83), so that the driving wheel (831) can drive the ball (83) to rotate by friction when driven by the motor (832); A first annular groove (826) is provided on the inner wall of the lower inner cavity of the sheath (82), the first annular groove (826) is coaxially distributed with the sphere (83), a second annular groove (825) is coaxially provided on the sphere (83), the second annular groove (825) is arranged corresponding to the first annular groove (826), an annular airbag (824) is embedded and installed in the second annular groove (825), the annular airbag (824) is connected to an air pumping assembly, and the air pumping assembly is used to pump air into the annular airbag (824), so that the expanded annular airbag (824) can fill the first annular groove (826); The pumping assembly is drivingly connected to the driving wheel (831).

5. The double-flow liquid hole structure of the glass electric melting furnace according to claim 4, characterized in that: The pumping assembly comprises an air pressure groove (827), the surface of the sphere (83) is provided with an air pressure groove (827), a piston (829) is coaxially and telescopically installed in the air pressure groove (827), a first magnet is embedded in the piston (829), an air guide channel (828) for connecting the annular air bag (824) and the air pressure groove (827) is also provided inside the sphere (83), a plane section is axially provided at the edge of the driving wheel (831), a second magnet (833) is fixed on the plane section, and the second magnet (833) and the first magnet repel each other.

6. The double-flow liquid hole structure of the glass electric melting furnace according to claim 5, characterized in that: A cover body (830) is fixed at the outer opening of the air pressure groove (827), and a plurality of air holes are formed through the surface of the cover body.

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