Rolled glass flange brick structure
By using the edge-retaining brick structure of stainless steel bracket sleeve in the photovoltaic glass production line, the problem of refractory stones and glass crystallization caused by the friction between the edge-retaining bricks and the lip tiles is solved, which extends the service life of the equipment, reduces production costs and increases the Yield rate and benefits.
Patent Information
- Application Number
- CN202411261970.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2024-12-13
AI Technical Summary
In the prior art, the photovoltaic glass production line has caused the friction between the edge block and the lip tiles, the edge block and the glass crystallization problems, resulting in low yield, high cost and poor efficiency.
Design a new type of calendered glass edge-retaining brick structure, with a bracket sleeve made of stainless steel at the bottom to avoid direct contact between the edge-retaining bricks and the lip tiles, reduce friction and liquid glass contact, and use 316 stainless steel bracket sleeve to achieve high temperature Smooth dissociation and edge collection of molten glass liquid.
It effectively avoids the cracking of refractory stones and edge blocks, extends the service life of edge blocks, reduces production costs, improves yield and economic benefits, and achieves precise control of light edges and minimizes edge losses.
Smart Images
Figure CN119118486A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of glass production equipment, and in particular to a rolled glass retaining brick structure. Background Art
[0002] As we all know, the forming of photovoltaic rolled glass mainly relies on the rolling machine and its lip bricks, retaining bricks, spray guns, cooling water and other forming systems. In the existing technology, the edges are large, the edge loss is high, the yield rate is low, and the light edge cannot be effectively controlled to the minimum range. The photovoltaic glass production line of a certain group, one of the world's five largest glass giants, in Nanjing has an annual yield rate of less than 60% due to inadequate control of light edge and edge loss, many stones and bubbles, etc. When the inventor personally visited, broken glass piled up like a mountain. In the end, due to low yield, high cost and serious losses, it went bankrupt. Another world glass giant in Jiangsu also closed its photovoltaic glass production line due to large edge loss, many stones and bubbles, poor quality, low output, high cost and poor efficiency.
[0004] In the prior art, the side bricks on both sides above the lip bricks have large friction between their surfaces, which can easily cause fine powdered refractory materials to fall off due to friction between the side bricks and the lip bricks. Therefore, these fine particles of refractory materials that fall off due to friction form refractory stones on the glass plate surface, which in turn affects the product quality, causing the quality and yield of photovoltaic glass to decline, and has an adverse effect on production.
[0005] In the prior art, it is necessary to adjust the size and model of photovoltaic glass products by shrinking or expanding the panels according to market order demand. When shrinking or expanding the panels, the side bricks are moved inward or outward on the lip bricks by adjusting the lead screws and bolts, which can easily cause the side bricks to break. When the side bricks break, production needs to be stopped and replaced, which affects the effective production time and has a serious impact on production.
[0006] In the prior art, the shape design of the edge bricks is also directly related to the crystallization of the edge of the photovoltaic glass. If the edge bricks are replaced too many times, it is easy to cause the edge temperature to drop quickly, and then a large amount of crystallization will occur, affecting the output and yield of photovoltaic products, affecting the effective production time, and having an adverse impact on production.
[0007] Based on the many problems existing in the above-mentioned retaining bricks, the present invention creatively designs and develops a new type of structural retaining brick, which can avoid the friction between the retaining brick and the lip brick to produce white refractory stone, and can effectively reduce edge loss. The new type of structural retaining brick can improve the current situation of glass crystallization, avoid the occurrence of large amounts of crystallization, and prevent the decrease in glass yield due to crystallization. Summary of the invention
[0008] The technical problem to be solved by the present invention is to provide a rolled glass retaining brick structure which can avoid the friction between the retaining brick and the lip brick to produce white refractory stone, avoid crystallization, and avoid the retaining brick from breaking.
[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is: to improve a rolled glass retaining brick structure, which is installed on the rolled glass overflow outlet, including a lip brick and a retaining brick, wherein there are two retaining bricks, and the two retaining bricks are respectively arranged on the upper surfaces of the two ends of the lip brick; the bottom end of the retaining brick is provided with a bracket sleeve made of stainless steel.
[0010] The beneficial effects of the present invention are as follows: in the rolled glass retaining brick structure of the present invention, a bracket sleeve made of stainless steel is provided at the bottom of the retaining brick. The above arrangement avoids the pollution of glass quality caused by fine refractory powder caused by direct contact and friction between the retaining brick and the lip brick, the breakage of the retaining brick, crystallization of the glass edge and other problems. It avoids direct contact between the head of the retaining brick and the glass liquid in the high-temperature molten state, effectively reduces the degree of erosion of the head of the retaining brick, effectively extends the service life of the retaining brick, prolongs the machine replacement time cycle, increases the effective production time, reduces the production cost, and improves the economic benefit. Furthermore, the bracket sleeve made of stainless steel and the non-invasive physical and chemical characteristics of the high-temperature molten glass liquid can better perform the smooth dissociation and edge trimming of the edge of the high-temperature molten glass liquid, so that the effective and precise control of the light edge during the expansion of the ultra-white photovoltaic rolled glass can be perfectly realized, and the edge loss can be minimized. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 A side view of a rolled glass retaining brick structure according to a specific embodiment of the present invention;
[0012] Figure 2 A top view of a rolled glass retaining brick structure according to a specific embodiment of the present invention;
[0013] Figure 3 A side view of a rolled glass retaining brick structure from another perspective according to a specific embodiment of the present invention;
[0014] Description of labels:
[0015] 1. Lip brick; 2. Side brick; 3. Bracket sleeve; 4. Steel beam; 5. Fixed bracket; 6. Waist-shaped hole; 7. Adjustment plate; 8. First tightening bolt; 9. Second tightening bolt. DETAILED DESCRIPTION
[0016] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.
[0017] like Figure 1 and Figure 2The present invention provides a rolled glass retaining brick structure, which is installed on the overflow outlet of the rolled glass, and comprises a lip brick 1 and a retaining brick 2. The retaining bricks 2 are two in number, and the two retaining bricks 2 are respectively arranged on the upper surfaces of the two ends of the lip brick 1; the bottom end of the retaining brick 2 is provided with a bracket sleeve 3 made of stainless steel.
[0018] As can be seen from the above description, the beneficial effects of the present invention are as follows: in the rolled glass retaining brick structure of the present invention, a bracket sleeve 3 made of stainless steel is provided at the bottom end of the retaining brick 2. The above arrangement avoids the pollution of glass quality caused by fine refractory powder caused by direct contact between the retaining brick 2 and the lip brick 1, the breakage of the retaining brick 2, and the crystallization of the glass edge. It avoids the direct contact between the head of the retaining brick 2 and the high-temperature molten glass liquid, effectively reduces the degree of erosion of the head of the retaining brick 2, effectively extends the service life of the retaining brick 2, prolongs the machine replacement time cycle, increases the effective production time, reduces the production cost, and improves the economic benefit. Furthermore, the bracket sleeve 3 made of stainless steel and the non-invasive physical and chemical characteristics of the high-temperature molten glass liquid can better perform the smooth dissociation and edge trimming of the edge of the high-temperature molten glass liquid, so that the effective and precise control of the light edge during the expansion of the ultra-white photovoltaic rolled glass can be perfectly realized, and the edge loss can be minimized.
[0019] Furthermore, in the above-mentioned rolled glass retaining brick structure, a circle of annular notches for accommodating the side walls of the bracket sleeve 3 is provided on the bottom edge of the retaining brick 2 .
[0020] As can be seen from the above description, the annular notch is provided to accommodate the bracket sleeve 3, so that the bracket sleeve 3 and the retaining brick 2 are more integrated and firmly connected, and the uneven contact surface with the glass liquid is avoided to cause uneven temperature.
[0021] Furthermore, in the above-mentioned rolled glass retaining brick structure, a steel beam 4 is arranged at the bottom of the overflow port, the lip brick 1 is slidably connected to the upper surface of the steel beam 4, and two ends of the steel beam 4 are respectively provided with fixing brackets 5, and the fixing brackets 5 are provided with waist-shaped holes 6, the length direction of the waist-shaped holes 6 is the axial direction of the lip brick 1, and a slider is slidably connected to the waist-shaped holes 6;
[0022] A mounting groove is provided on the top surface of the edge retaining brick 2, and an adjusting plate 7 is fixedly connected in the mounting groove. One end of the adjusting plate 7 is connected to the mounting groove, and the other end is connected to the sliding block.
[0023] As can be seen from the above description, the fixed bracket 5 is provided to enable the edge retaining brick 2 to be movable so as to shrink or expand the edge.
[0024] Furthermore, in the above-mentioned rolled glass retaining brick structure, two screw holes are provided at the bottom of the installation groove, and the adjustment plate 7 is connected to the screw holes through a connecting piece.
[0025] Furthermore, in the above-mentioned rolled glass retaining brick structure, a first tightening bolt 8 is provided on the fixing bracket 5 , one end of the first tightening bolt 8 is threadedly connected to the fixing bracket 5 , and the other end thereof presses the retaining brick 2 .
[0026] As can be seen from the above description, the first tightening bolt 8 can be provided to cooperate with the adjusting plate 7 to make the side retaining brick 2 more stable after being moved.
[0027] Furthermore, in the above-mentioned rolled glass retaining brick structure, a second tightening bolt 9 is provided on the fixing bracket 5, one end of the second tightening bolt 9 is threadedly connected to the fixing bracket 5, and the other end is connected to the lip brick 1 through a tightening spring.
[0028] As can be seen from the above description, the second tightening bolt 9 is provided to fix the lip brick 1 stably, and the tightening spring is provided to prevent the lip brick 1 from expanding and contracting due to heat and affecting the fixing stability.
[0029] Furthermore, in the above-mentioned rolled glass retaining brick structure, the retaining brick 2 includes a brick body, and the side of the brick body facing the roller of the calender is provided with a paving arc surface for paving the roller, and the bottom end of the paving arc surface is hooked inward to form a slot for accommodating the end of the lip brick 1.
[0030] Furthermore, in the above-mentioned rolled glass retaining brick structure, the bracket sleeve is made of 316 stainless steel plate, and the thickness of the stainless steel plate is 5-30 mm.
[0031] From the above description, it can be seen that the physical and chemical characteristics of the non-wetting of 316 stainless steel and high-temperature molten glass can effectively smooth the edge of the high-temperature molten glass and trim the edge. Therefore, it can perfectly achieve effective and precise control of the light edge when shrinking the ultra-white photovoltaic rolled glass and minimize the light edge loss.
[0032] Furthermore, in the above-mentioned rolled glass retaining brick structure, it is characterized in that the groove is an arc-shaped groove.
[0033] Furthermore, in the above-mentioned rolled glass retaining brick structure, the lip brick 1 is made of sillimanite brick, corundum brick or zircon-mullite brick, and the retaining brick 2 is made of zircon.
[0034] Example 1
[0035] The application scenario of this embodiment is: in the production process of ultra-white photovoltaic rolled glass, the ultra-white photovoltaic glass liquid melted at high temperature flows from the passage to the overflow port after high-temperature clarification, and the high-temperature molten glass liquid then flows into the calender for forming through the lip brick 1 and the side bricks 2 on both sides.
[0036] The retaining bricks 2 and lip bricks 1 commonly used by enterprises are made of refractory materials such as sillimanite or zirconium mullite. The surfaces of these refractory materials are relatively rough. Under high temperature conditions, the glass liquid is easily attached to the refractory materials. In addition, due to the heat dissipation effect of the surface of these refractory materials, the temperature of the inner surface (the surface where the retaining brick 2 or the support brick meets the glass liquid) drops, the temperature of the glass liquid attached to the inner surface drops, the viscosity of the glass increases, the flow of the glass liquid slows down, and more and more glass liquid adheres to the inner surface of the retaining brick 2 and the support brick. When the temperature drops to the crystallization temperature of the glass, glass crystallization occurs. After crystallization occurs at the retaining brick 2, the size of the glass plate becomes narrower, which seriously affects the product output and quality.
[0037] See also Figure 1-2 In view of the above problems, the present embodiment provides a rolled glass retaining brick structure, which is installed on the rolled glass overflow outlet, and includes a lip brick 1 and a retaining brick 2. There are two retaining bricks 2, and the two retaining bricks 2 are respectively arranged on the upper surfaces of the two ends of the lip brick 1; the bottom end of the retaining brick 2 is provided with a bracket sleeve 3 made of stainless steel.
[0038] The bottom edge of the retaining brick 2 is provided with an annular notch for accommodating the side wall of the bracket sleeve 3 .
[0039] A steel beam 4 is arranged at the bottom of the overflow port, and the lip brick 1 is slidably connected to the upper surface of the steel beam 4. Two ends of the steel beam 4 are respectively provided with fixing brackets 5, and the fixing brackets 5 are provided with waist-shaped holes 6. The length direction of the waist-shaped holes 6 is the axial direction of the lip brick 1, and a slider is slidably connected to the waist-shaped holes 6.
[0040] A mounting groove is provided on the top surface of the edge retaining brick 2, and an adjusting plate 7 is fixedly connected in the mounting groove. One end of the adjusting plate 7 is connected to the mounting groove, and the other end is connected to the sliding block.
[0041] Two screw holes are provided at the bottom of the mounting groove, and the adjustment plate 7 is connected in the screw holes through a connecting piece.
[0042] The side retaining brick 2 comprises a brick body, and the side of the brick body facing the roller of the calender is provided with a cambered surface for making way for the roller, and the bottom end of the cambered surface is hooked inward to form a slot for accommodating the end of the lip brick 1.
[0043] The bracket sleeve is made of 316 stainless steel plate, and the thickness of the stainless steel plate is 5-30 mm.
[0044] Use of the above-mentioned rolled glass retaining brick structure:
[0045] High-quality low-iron glass raw materials are prepared, transported, fed, melted and clarified. The molten high-quality glass liquid flows from the passage to the lip brick. The thin edges of the molten high-temperature glass liquid on the lip brick enter the calender under the blocking effect of the steel-resistant composite retaining brick. Under the action of the calender, the edges of the high-temperature molten glass liquid thin plate shrink to form smooth edges.
[0046] When the board width needs to be adjusted according to the order requirements, such as shrinking the board, adjust the adjustment plate connected to the retaining brick to push the retaining brick to slide inward. The 316 stainless steel bracket sleeve slides freely on the lip brick with less friction, so there will be no white refractory stones caused by the refractory shavings falling off the shrinking board, which will affect the board surface quality. When expanding the board, it is the same as the above shrinking board. Due to the physical and chemical characteristics of the non-wetting of the bracket sleeve made of the above 316 special stainless steel and the high-temperature molten glass liquid, the edge of the high-temperature molten glass liquid can be smoothly dissociated and the edge can be trimmed. Therefore, the effective and precise control of the light edge during the expansion of the ultra-white photovoltaic rolled glass can be perfectly achieved, and the edge loss can be minimized.
[0047] When the retaining bricks in the prior art are not provided with bracket sleeves, the edge loss of the original ultra-white photovoltaic rolled glass is about 11-13%. The research of the present invention is successful. After the retaining bricks are changed to the rolled glass retaining brick structure of the above embodiment, the edge loss of the glass plate is reduced to about 5-6%, and the edge loss is reduced by more than 6-7%. The loss of more than 2% of white refractory stone and the cracking of retaining bricks are eliminated.
[0048] The specific data are as follows:
[0049] 1. Reduce edge loss: Steel-resistant composite retaining brick technology reduces edge loss by 4-5%, reducing annual losses by about 36.5442 million yuan / year. See Table 1 below for specific calculation data.
[0050] Table 1 Statistics of edge damage
[0051]
[0052] 2. The stone of white refractory material is reduced by 2%, and the annual economic loss is reduced by about. The specific statistical data is shown in Table 2 below
[0053] 550 tons / day × 2% × 30 days = 330 tons / month;
[0054] 330 tons / month×200×17=1,122,000 yuan / year;
[0055] =1.12 million yuan / year;
[0056] Table 2: Calculation of specific data for reducing white refractory stone
[0057]
[0058] 3. The application of the present invention reduces the cracking of retaining bricks and reduces losses. The economic benefits generated are calculated as follows:
[0059] Table 3: Calculation of the loss caused by the cracking of retaining bricks and the replacement of equipment
[0060]
[0061] Table 3 Description:
[0062] (1) When changing the machine, the liquid flow in the kiln was found to change, bubbles increased, and defects increased, affecting the production of other lines by 10%. The production of the line could not be restored until 3 days later;
[0063] (2) The processing cost of the upper and lower calender rollers is RMB 20,000 / piece*2=40,000, and the cost of a set of lip bricks is RMB 25,000 / set;
[0064] (3) Line 2 did not receive any plates for a total of 10 hours that day. (185 tons * 85% = 157 tons);
[0065] (4) Due to the accident, it takes 3 days for the line to resume normal production. Based on this, the daily loss is calculated as: 185*15% (185*15%*3 days=83 tons);
[0066] (5) The change of machine for line 2 also had some impact on line 1 and line 3. The process of machine change changed and the defects increased. The average output loss was 10%, and the impact period of line 1 and line 3 was about 2 days (i.e. 185*10%*2 lines*2 days=74 tons).
[0067] 4. The present invention can effectively reduce crystallization losses and risks, and is expected to reduce crystallization losses by approximately RMB 3 million per year.
[0068] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A rolled glass retaining brick structure, which is installed on the overflow of rolled glass, characterized in that: It comprises a lip brick and a side retaining brick. There are two side retaining bricks, which are respectively arranged on the upper surfaces of both ends of the lip brick. The bottom end of the side retaining brick is sleeved with a bracket sleeve made of stainless steel.
2. The rolled glass retaining brick structure according to claim 1, characterized in that: The bottom edge of the side retaining brick is provided with a circle of annular notches for accommodating the side wall of the bracket sleeve.
3. The rolled glass retaining brick structure according to claim 1, characterized in that: A steel beam is arranged at the bottom of the overflow port, the lip brick is slidably connected to the upper surface of the steel beam, two ends of the steel beam are respectively provided with fixing brackets, the fixing brackets are provided with waist-shaped holes, the length direction of the waist-shaped holes is the axial direction of the lip brick, and a slider is slidably connected to the waist-shaped holes; The top surface of the retaining brick is provided with a mounting groove, and an adjusting plate is fixedly connected in the mounting groove. One end of the adjusting plate is connected to the mounting groove, and the other end is connected to the sliding block.
4. The rolled glass retaining brick structure according to claim 3, characterized in that: Two screw holes are arranged at the bottom of the installation groove, and the adjustment plate is connected in the screw holes through a connecting piece.
5. The rolled glass retaining brick structure according to claim 3, characterized in that: The fixing bracket is provided with a first tightening bolt, one end of which is threadedly connected to the fixing bracket, and the other end of which presses against the retaining brick.
6. The rolled glass retaining brick structure according to claim 3, characterized in that: The fixing bracket is provided with a second tightening bolt, one end of the second tightening bolt is threadedly connected to the fixing bracket, and the other end is connected to the lip brick via a tightening spring.
7. The rolled glass retaining brick structure according to claim 1, characterized in that: The side retaining brick comprises a brick body, and the side of the brick body facing the roller of the calender is provided with a cambered surface for accommodating the roller, and the bottom end of the cambered surface is hooked inward to form a slot for accommodating the end of the lip brick.
8. The rolled glass retaining brick structure according to claim 7, characterized in that: The bracket sleeve is made of 316 stainless steel plate, and the thickness of the stainless steel plate is 5-30 mm.
9. The rolled glass retaining brick structure according to claim 7, characterized in that: The clamping groove is an arc-shaped groove.
10. The rolled glass retaining brick structure according to claim 1, characterized in that: The lip brick is made of sillimanite brick, corundum brick or zircon-mullite brick, and the sidewall brick is made of zircon.