Photovoltaic glass production equipment

Abstract

The utility model provides photovoltaic glass production equipment. The photovoltaic glass production equipment comprises a transverse passage, a plurality of branch passages and a plurality of heating devices, the plurality of branch passages are communicated with the transverse passage, so that the glass liquid is suitable for flowing between the transverse passage and each branch passage. The plurality of heating devices and the branch passages are arranged in a one-to-one correspondence manner, and each heating device is configured to be suitable for heating the molten glass flowing in the branch passages. Through the arrangement of the heating device, only the branch passages can be heated, and the temperature rise amplitude of the transverse passage is reduced, so that the temperature of each branch passage can be flexibly adjusted, and meanwhile, the influence of the temperature rise of the transverse passage on each branch passage is reduced. Therefore, according to the photovoltaic glass production equipment, the temperature of each branch passage is convenient to regulate and control, so that the quality of a finished product of glass is improved.

Description

Technical Field

[0001] The present application relates to the technical field of glass manufacturing, and in particular to a photovoltaic glass production device. Background Art

[0002] The transverse passage and branch passage in the glass production line are mainly used to control the flow and temperature of the glass liquid to ensure its uniformity and temperature conditions suitable for molding. In the related art, when ultra-thin photovoltaic glass is produced by calendering molding process, the temperature is only increased through the transverse passage, and no heating measures are taken for the branch passage. For a glass production line with one kiln and multiple lines, if other lines produce products of different types or thicknesses, there will be excess energy consumption, and it is not convenient to adjust the temperature of the branch passage according to the thickness of the glass to be produced to achieve the best heating effect. Utility Model Content

[0003] The main purpose of this application is to provide a photovoltaic glass production device that can easily regulate the temperature of each branch passage to improve the quality of the finished glass product.

[0004] To achieve the above purpose, the embodiment of the present application adopts the following technical solution:

[0005] Photovoltaic glass production equipment includes a horizontal passage, multiple branch passages and multiple heating devices.

[0006] The plurality of branch passages are all connected to the transverse passage, so that the glass liquid is suitable for flowing between the transverse passage and each branch passage;

[0007] A plurality of heating devices are arranged corresponding to each branch passage one by one, and each heating device is configured to heat the glass liquid flowing in the branch passage.

[0008] In some embodiments, the heating device includes a heating torch configured to emit flames to heat the molten glass.

[0009] In some embodiments, each heating device includes a plurality of heating torches, a first center plane of the branch passage cuts the branch passage in a vertical direction, and each heating torch is symmetrically distributed about the first center plane.

[0010] In some embodiments, one of each branch passage is a first branch passage, and the other is a second branch passage. Among each heating device, one corresponding to the first branch passage is a first heating device, and one corresponding to the second branch passage is a second heating device. The set heating temperatures of the first heating device and the second heating device are different.

[0011] In some embodiments, the photovoltaic glass production equipment also includes a calendering device, which includes an upper calendering roller, a lower calendering roller and a pressure bar assembly, and the pressure bar assembly includes a driving part and a pressure bar part, the driving part is connected to the upper calendering roller and the lower calendering roller, one end of the pressure bar part is connected to the upper calendering roller, and the other end is connected to the driving part, so that the driving part can drive the pressure bar part and drive the upper calendering roller close to the lower calendering roller.

[0012] In some embodiments, the pressure lever portion includes a first lever, a second lever, a third lever and a lever fulcrum. Along the horizontal direction, one end of the first lever is connected to the second lever and the other end is connected to the third lever. The lever fulcrum is connected to the first lever and is located between the second lever and the third lever. The driving portion is configured to push the second lever upward and drive the third lever to push the upper calendering roller downward.

[0013] In some embodiments, the photovoltaic glass production equipment further includes a calendering device, the calendering device including an upper calendering roller and a lower calendering roller;

[0014] The roller diameter φ1 of the upper calendering roller satisfies: 305 mm ≤ φ1 ≤ 325 mm, and / or the roller diameter φ2 of the lower calendering roller satisfies: 310 mm ≤ φ2 ≤ 330 mm.

[0015] In some embodiments, the photovoltaic glass production equipment further includes a calendering device, the calendering device including an upper calendering roller and a lower calendering roller;

[0016] The wall thickness T1 of the upper calendering roller satisfies: 50 mm ≤ T1 ≤ 100 mm, and / or the wall thickness T2 of the lower calendering roller satisfies: 50 mm ≤ T2 ≤ 100 mm.

[0017] In some embodiments, the photovoltaic glass production equipment further includes an edge burning device configured to spray flames to heat the edge of the formed glass.

[0018] In some embodiments, the edge burning device includes a plurality of edge burning torches, the second center plane of the glass cuts the glass in a vertical direction, and the edge burning torches are symmetrically distributed about the second center plane.

[0019] Compared with the prior art, the beneficial effects of this application are:

[0020] The photovoltaic glass production equipment of the present application includes a transverse passage, a plurality of branch passages and a plurality of heating devices. Among them, the plurality of branch passages are connected to the transverse passage so that the glass liquid is suitable for flowing between the transverse passage and each branch passage, and the plurality of heating devices are arranged one by one with each branch passage, and each heating device is configured to be suitable for heating the glass liquid flowing in the branch passage. Therefore, compared with the setting of overall heating of the transverse passage in the related art, the photovoltaic glass production equipment of the present application can only heat up the branch passage, reducing the temperature increase of the transverse passage, so that the temperature of each branch passage can be flexibly adjusted, and the influence of the heating of the transverse passage on each branch passage can be reduced. Corresponding to the application scenario where each branch passage corresponds to different production lines or molding equipment, or the specifications (such as thickness) of the glass produced by each branch passage are different, the above setting can set the heating device for different branch passages, and the heating device of the corresponding branch passage can be turned on according to the demand to avoid energy waste, and avoid the influence of the heating of the transverse passage on each branch passage, so that the temperature of each branch passage is difficult to control. Therefore, the photovoltaic glass production equipment of the present application is convenient for regulating the temperature of each branch passage to improve the quality of the finished glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 A schematic side view of a photovoltaic glass production device provided in one embodiment of the present application;

[0023] Figure 2 It is a side view schematic diagram of the combination of the branch passage and the heating device provided in one embodiment of the present application;

[0024] Figure 3 A schematic side view of a calendering device provided in one embodiment of the present application;

[0025] Figure 4 It is a side view schematic diagram of the combination of the edge burning device and the glass provided in one embodiment of the present application.

[0026] Description of Figure Numbers:

[0027] 100- Photovoltaic glass production equipment;

[0028] 110- horizontal passage;

[0029] 120-branch passage; 120A-first branch passage; 120B-second branch passage; 121-first center plane;

[0030] 130-heating device; 130A-first heating device; 130B-second heating device; 131-heating gun;

[0031] 140-calendering device; 141-upper calendering roller; 142-lower calendering roller; 143-bar pressure assembly; 1431-driving unit; 1432-bar pressure unit; 14321-first lever; 14322-second lever; 14323-third lever; 14324-lever fulcrum;

[0032] 150- edge burning device; 151- edge burning musket;

[0033] 200-glass; 210-second center plane;

[0034] X-horizontal direction;

[0035] Y - vertical direction.

[0036] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] The transverse passage and branch passage in the glass production line are mainly used to control the flow and temperature of the glass liquid to ensure its uniformity and temperature conditions suitable for molding. In the related art, when ultra-thin photovoltaic glass is produced by calendering molding process, the temperature is only increased through the transverse passage, and no heating measures are taken for the branch passage. For a glass production line with one kiln and multiple lines, if other lines produce products of different types or thicknesses, there will be excess energy consumption, and it is not convenient to adjust the temperature of the branch passage according to the thickness of the glass to be produced to achieve the best heating effect.

[0041] In addition, in the related art, the glass liquid is rolled and formed by calendering rollers. In order to press the glass of expected thickness, it is necessary to adjust the distance between the upper calendering roller and the lower calendering roller that are relatively arranged. The specific method is to separately set a pressure bar outside the upper calendering roller and the lower calendering roller, and apply pressure to the calendering roller through the external pressure bar, so that the calendering roller presses the upper calendering roller. The above-mentioned pressure bar external to the calendering roller has the problems of large pressure loss and excessive bearing pressure on the load-bearing floor. In addition, after the glass is formed, deformation is easy to occur due to the rapid cooling of the edge of the glass. All of the above-mentioned problems are likely to lead to the thickness of the manufactured glass not meeting the standard, especially it is difficult to manufacture ultra-thin photovoltaic glass.

[0042] In view of this, see Figure 1-Figure 4 In an embodiment of the present invention, a photovoltaic glass production device 100 is provided. Specifically, the photovoltaic glass production device 100 includes a horizontal passage 110, a plurality of branch passages 120 and a plurality of heating devices 130.

[0043] Among them, see Figure 1-Figure 2, the transverse passage 110 can be connected to the outlet end of the neck and is used to adjust the flow rate of the glass liquid from the melting pool to the branch passage 120. Through the design of the transverse passage 110, it can be ensured that the glass liquid can be more evenly distributed before entering each branch passage 120. In addition, multiple branch passages 120 are connected to the transverse passage 110 so that the glass liquid is suitable for flowing between the transverse passage 110 and each branch passage 120. It can be understood that each branch passage 120 can further guide the glass liquid to different production lines or molding equipment, and the specifications (such as thickness) of the glass 200 produced by each branch passage 120 can be different. The setting of the branch passage 120 is crucial to maintaining the temperature and viscosity required in the production process and will affect the product quality.

[0044] Based on the above branch passage 120, see Figure 1-Figure 2 , multiple heating devices 130 are arranged one by one with each branch passage 120, and each heating device 130 is configured to be suitable for heating the glass liquid flowing in the branch passage 120. Therefore, the heating device 130 can be connected to the branch passage 120 or arranged beside the branch passage 120. Based on the above heating requirements, in different embodiments, the heating device 130 can be heated by flame, electromagnetic heating, or (solid / liquid / gas) heat transfer. Through the above setting of the heating device 130, it is possible to heat only the branch passage 120, reducing the temperature increase range of the transverse passage 110, so that the temperature of each branch passage 120 can be flexibly adjusted, and at the same time, the impact of the temperature increase of the transverse passage 110 on each branch passage 120 can be reduced. In other words, when the corresponding heating device 130 of each branch passage 120 is working, the temperature of the glass liquid flowing in each branch passage 120 can be greater than the temperature of the glass liquid flowing in the transverse passage 110. Especially for the production of ultra-thin photovoltaic glass 200, it is necessary to precisely control the temperature of the branch passage 120 to produce glass 200 of the required thickness. For example, in some embodiments, after being heated by the heating device 130, the temperature of the glass liquid in the branch passage 120 can be increased from the original 1170°C to 1190°C to 1220°C to 1245°C, and the space temperature is increased by 40°C to 60°C, which is conducive to the increase of the temperature of the glass liquid in the overflow port area.

[0045] In some embodiments, the photovoltaic glass production equipment 100 can be used for a series of processes of processing raw materials into finished glass 200, including melting, forming, cooling and post-processing steps. Therefore, in some embodiments, the photovoltaic glass production equipment 100 can also include mixing equipment, a furnace, a calender, an annealing kiln, a cutting machine, etc.

[0046] According to the combination of the above embodiments, it can be seen that the photovoltaic glass production equipment 100 of the present application includes a transverse passage 110, a plurality of branch passages 120 and a plurality of heating devices 130. Among them, the plurality of branch passages 120 are all connected to the transverse passage 110, so that the glass liquid is suitable for flowing between the transverse passage 110 and each branch passage 120, and the plurality of heating devices 130 are arranged one by one with each branch passage 120, and each heating device 130 is configured to be suitable for heating the glass liquid flowing in the branch passage 120. Therefore, compared with the setting of overall temperature increase of the transverse passage 110 in the related art, the photovoltaic glass production equipment 100 of the present application can only heat up the branch passage 120, reducing the temperature increase range of the transverse passage 110, so that the temperature of each branch passage 120 can be flexibly adjusted, while reducing the impact of the temperature increase of the transverse passage 110 on each branch passage 120. Corresponding to the application scenario where each branch passage 120 corresponds to a different production line or molding equipment, or the specifications (such as thickness) of the glass 200 produced by each branch passage 120 are different, the above setting can set the heating device 130 for different branch passages 120, and the heating device 130 of the corresponding branch passage 120 can be turned on according to the demand to avoid energy waste, and avoid the horizontal passage 110 from heating up and affecting each branch passage 120, making it difficult to control the temperature of each branch passage 120. Therefore, the photovoltaic glass production equipment 100 of the present application is convenient for controlling the temperature of each branch passage 120 to improve the quality of the finished glass 200.

[0047] See also Figure 1-Figure 2 In some embodiments, the heating device 130 may include a heating gun 131, and the heating gun 131 may be configured to spray flames to heat the glass liquid. It is understandable that the heating gun 131 can be used as a tool to generate a high-temperature, high-pressure heat source by spraying flames. The method of heating the branch passage 120 by the heating gun 131 is more efficient, and the heating gun 131 is easier to arrange. Exemplarily, in some specific embodiments, the heating gun 131 may be composed of a heating element, an electronic control unit, and a conveying medium. Its working principle may be: when current flows through the heater, electrons collide with metal atoms to generate heat. By using different conveying media to transfer heat and controlling the voltage and current of the power supply, the heat generated by the heater is focused on the object to be heated or baked, thereby achieving high-temperature heating.

[0048] Based on the above-mentioned heating gun 131, further, see Figure 2In some embodiments, each heating device 130 may include a plurality of heating guns 131. That is, the heating device 130 corresponding to one of the branch passages 120 includes a plurality of heating guns 131 to heat the branch passage 120. The first center plane 121 of the branch passage 120 may cut the branch passage 120 along the vertical direction Y. It is understood that the first center plane 121 may be a virtual body and is only used to represent the middle dividing plane of the branch passage 120. Thus, along the horizontal direction X, each heating gun 131 may be symmetrically distributed about the first center plane 121. The above-mentioned symmetrical distribution indicates that the number of heating guns 131 on both sides of the first center plane 121 is the same, and more specifically, it can also be expressed as the heating guns 131 respectively located on both sides of the first center plane 121 have the same value of distance from the first center plane 121 (a group of heating guns 131 correspondingly arranged on both sides of the first center plane 121 have the same value of distance from the first center plane 121). The above-mentioned symmetrical arrangement can make the heating of both sides of the glass 200 more uniform, which is beneficial to further improve the quality of the finished product of the glass 200.

[0049] See also Figure 1 In some embodiments, one of the branch passages 120 is defined as the first branch passage 120A, and the other is defined as the second branch passage 120B. Accordingly, one of the heating devices 130 corresponding to the first branch passage 120A is defined as the first heating device 130A, and one corresponding to the second branch passage 120B is defined as the second heating device 130B. Based on this, the set heating temperatures of the first heating device 130A and the second heating device 130B can be different. It can be understood that each branch passage 120 can be used to manufacture glass 200 of different specifications, and thus, the set heating temperature of the heating device 130 corresponding to each branch passage 120 can be adjusted accordingly so that the glass liquid in each branch passage 120 can reach the optimal heating temperature.

[0050] See also Figure 3In some embodiments, the photovoltaic glass production equipment 100 may further include a calendering device 140. The calendering device 140 may include an upper calendering roller 141, a lower calendering roller 142, and a pressure bar assembly 143. The pressure bar assembly 143 may include a driving part 1431, a pressure bar part 1432, and a pressure bar part. Thus, the driving part 1431 and the pressure bar part 1432 are connected to the upper calendering roller 141 and the lower calendering roller 142, and one end of the pressure bar part is connected to the upper calendering roller 141 and the other end is connected to the driving part 1431 and the pressure bar part 1432, so that the driving part 1431 and the pressure bar part 1432 can drive the pressure bar part and drive the upper calendering roller 141 to approach the lower calendering roller 142. It can be understood that by moving the upper calendering roller 141 close to the lower calendering roller 142, the molten glass can be squeezed into a softened glass 200 strip. Furthermore, a specific texture can be formed on the glass 200 strip by setting the texture of the upper calendering roller 141 or the lower calendering roller 142. In particular, while driving the upper calendering roller 141, since the pressure bar portion 1432 of the driving unit 1431 is connected to the upper calendering roller 141 and the lower calendering roller 142, and one end of the pressure bar portion is connected to the upper calendering roller 141 and the other end is connected to the pressure bar portion 1432 of the driving unit 1431, the pressure bar portion 1432 of the driving unit 1431 can be used to support or drive the upper calendering roller 141 and the lower calendering roller 142 to rotate, and can also be connected to the pressure bar portion, so that the pressure bar portion can be regarded as built-in into the pressure bar portion 1432 of the driving unit 1431. Compared with an external and independently arranged pressure bar portion, the built-in pressure bar portion has a high pressure utilization rate, that is, the pressure loss of the pressure bar is small, which helps to improve the overall stability of the calendering device 140 and reduce the impact of external environmental changes on the calendering accuracy.

[0051] For more details, see Figure 3In some embodiments, the pressure bar portion may include a first lever 14321, a second lever 14322, a third lever 14323, and a lever fulcrum 14324. Along the horizontal direction X, one end of the first lever 14321 may be connected to the second lever 14322, and the other end may be connected to the third lever 14323. The lever fulcrum 14324 may be connected to the first lever 14321 and located between the second lever 14322 and the third lever 14323. Thus, the driving part 1431 and the pressure bar portion 1432 may be configured to push the second lever 14322 upward, and drive the third lever 14323 to push the upper calender roller 141 downward. It can be understood that the first lever 14321 and the lever fulcrum 14324 together form a lever mechanism, and the second lever 14322 can apply a force to one end of the first lever 14321, and transmit the force to the third lever 14323 through the lever principle, so that the third lever 14323 can generate a downward pressure on the upper calendering roller 141. Therefore, the lever fulcrum 14324 and the first lever 14321 can be connected in rotation, for example, a shaft and a sleeve can be connected in a matching manner or a hinge can be used. In addition, in order to increase the thrust of the third lever 14323 on the upper calendering roller 141, in some embodiments, along the extension direction of the first lever 14321, the distance between the second lever 14322 and the lever fulcrum 14324 can be greater than the distance between the third lever 14323 and the lever fulcrum 14324.

[0052] For other settings of the calendering device 140. In some embodiments, the upper calendering roller 141 or the lower calendering roller 142 can be made of stainless steel, so that the smooth surface can be used to ensure the flatness of the surface of the glass 200. In some embodiments, the upper calendering roller 141 or the lower calendering roller 142 can be set to any suitable outer profile shape.

[0053] Based on the upper calendering roller 141 and the lower calendering roller 142 defined in the above embodiment, the sizes of the two rollers can be further limited. Figure 3 In some embodiments, the roller diameter φ1 of the upper calendering roller 141 may satisfy: 305mm≤φ1≤325mm, and correspondingly, the roller diameter φ2 of the lower calendering roller 142 may satisfy: 310mm≤φ2≤330mm. Exemplarily, in some embodiments, φ1 or φ2 may take a value of one of 305mm, 310mm, 315mm, 320mm, and 325mm. The following definition: When the roller diameter of the calendering roller is uneven, within a range of 180°, three circumferential cutting positions are uniformly taken along the circumference of the outer contour of the calendering roller, and then three axial cutting positions are taken along the axial direction based on the above three cutting positions, and 9 value points are obtained based on the above circumferential and axial cutting positions, and the average roller diameter of the 9 value points is the roller diameter of the calendering roller. On the other hand, see Figure 3In some embodiments, the wall thickness T1 of the upper calendering roller 141 may satisfy: 50mm≤T1≤100mm, and correspondingly, the wall thickness T2 of the lower calendering roller 142 may satisfy: 50mm≤T2≤100mm. Exemplarily, in some embodiments, T1 or T2 may take a value of 50mm, 60mm, 70mm, 80mm, 90mm, 100mm. When the wall thickness of the calendering roller is uneven, the wall thickness of the calendering roller may be obtained by referring to the above-mentioned method for taking the value of the roller diameter. By adjusting the roller diameter of the calendering roller and adjusting the wall thickness of the calendering roller, the molding temperature and the production and molding process requirements may be matched accordingly.

[0054] In addition, see Figure 4 In some embodiments, the photovoltaic glass production equipment 100 may further include a burning device 150, which is configured to emit flames to heat the edge of the formed glass 200. It can be understood that the burning device 150 is similar to the heating device 130 of the above embodiment, except that the burning device 150 is used to heat the formed glass 200, while the heating device 130 is used to heat the glass liquid flowing in the branch passage 120. Therefore, the setting and structure of the burning device 150 can refer to the heating device 130 in the above embodiment. For more details, see Figure 4 In some embodiments, the edge burning device 150 may include a plurality of edge burning guns 151, which define a second center plane 210 of the glass 200 to cut the glass 200 along the vertical direction Y. Along the horizontal direction X, each edge burning gun 151 may be symmetrically distributed about the second center plane 210. Similar to the first center plane 121 of the above embodiment, the second center plane 210 may be a virtual body and is only used to represent the middle cutting plane of the glass 200. The symmetrical arrangement of the plurality of edge burning guns 151 may refer to the symmetrical arrangement of the heating guns 131 of the above embodiment, which will not be described in detail here. Similarly, the symmetrical arrangement of the above-mentioned edge burning guns 151 can make the heating on both sides of the glass 200 more uniform, which is conducive to further improving the quality of the finished product of the glass 200.

[0055] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the application concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. Photovoltaic glass production equipment, characterized in that: include: Cross passage; A plurality of branch passages are connected to the transverse passage so that the glass liquid is suitable for flowing between the transverse passage and each of the branch passages; A plurality of heating devices are arranged corresponding to each of the branch passages, and each of the heating devices is configured to heat the glass liquid flowing in the branch passage.

2. The photovoltaic glass production equipment according to claim 1, characterized in that: The heating device includes a heating torch configured to spray flames to heat the molten glass.

3. The photovoltaic glass production equipment according to claim 2, characterized in that: Each of the heating devices comprises a plurality of the heating torches, a first central plane of the branch passage divides the branch passage in a vertical direction, and the heating torches are symmetrically distributed about the first central plane.

4. The photovoltaic glass production equipment according to claim 1, characterized in that: One of each branch passage is a first branch passage, and the other is a second branch passage. Among the heating devices, one corresponding to the first branch passage is a first heating device, and one corresponding to the second branch passage is a second heating device. The set heating temperatures of the first heating device and the second heating device are different.

5. The photovoltaic glass production equipment according to claim 1, characterized in that: The photovoltaic glass production equipment also includes a calendering device, which includes an upper calendering roller, a lower calendering roller and a pressure bar assembly. The pressure bar assembly includes a driving part and a pressure bar part. The driving part is connected to the upper calendering roller and the lower calendering roller. One end of the pressure bar part is connected to the upper calendering roller and the other end is connected to the driving part, so that the driving part can drive the pressure bar part and drive the upper calendering roller to approach the lower calendering roller.

6. The photovoltaic glass production equipment according to claim 5, characterized in that: The pressure lever portion includes a first lever, a second lever, a third lever and a lever fulcrum. In the horizontal direction, one end of the first lever is connected to the second lever, and the other end is connected to the third lever. The lever fulcrum is connected to the first lever and is located between the second lever and the third lever. The driving portion is configured to push the second lever upward and drive the third lever to push the upper calendering roller downward.

7. The photovoltaic glass production equipment according to claim 1, characterized in that: The photovoltaic glass production equipment also includes a calendering device, and the calendering device includes an upper calendering roller and a lower calendering roller; The roller diameter φ1 of the upper calendering roller satisfies: 305 mm ≤ φ1 ≤ 325 mm, and / or the roller diameter φ2 of the lower calendering roller satisfies: 310 mm ≤ φ2 ≤ 330 mm.

8. The photovoltaic glass production equipment according to claim 1, characterized in that: The photovoltaic glass production equipment also includes a calendering device, which includes an upper calendering roller and a lower calendering roller; The wall thickness T1 of the upper calendering roller satisfies: 50 mm ≤ T1 ≤ 100 mm, and / or the wall thickness T2 of the lower calendering roller satisfies: 50 mm ≤ T2 ≤ 100 mm.

9. The photovoltaic glass production equipment according to claim 1, characterized in that: The photovoltaic glass production equipment also includes an edge burning device, which is configured to spray flames to heat the edges of the formed glass.

10. The photovoltaic glass production equipment according to claim 9, characterized in that: The edge burning device includes a plurality of edge burning torches. The second center plane of the glass cuts the glass in a vertical direction, and the edge burning torches are symmetrically distributed about the second center plane.

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