Buffer device and glass calendering production line

Abstract

The present disclosure relates to the technical field of glass manufacturing. Disclosed are a buffer device and a glass calendering production line. The buffer device comprises a buffer chamber and a glass melt drainage channel. The buffer chamber is provided with a top wall and a bottom wall which are opposite each other, the top wall having a larger area than the bottom wall, and a feeding port configured to allow glass melt to be input being provided in the top wall. The buffer chamber is further provided with a glass melt guide side wall, the glass melt guide side wall being connected to the bottom wall, being inclined towards the bottom wall and extending in a direction close to the top wall. The glass melt drainage channel is connected between the top wall and the glass melt guide side wall and is configured to drain the glass melt in the buffer chamber. Compared with the prior art, the buffer device provided in the present disclosure uses the glass melt guide side wall which is inclined towards the bottom wall and extends in the direction close to the top wall and the glass melt drainage channel connected between the top wall and the flow guide side wall, such that the glass melt can stably flow out while a buffer function is realized, thus improving the uniformity of glass products and ensuring the product quality.

Description

Buffer device and glass rolling production line

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 2023118662481 filed with the Chinese Patent Office on December 29, 2023, entitled “A Cache Device and a Glass Rolling Production Line,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of glass manufacturing, and in particular to a buffer device and a glass rolling production line. Background Art

[0004] Currently, during the glass rolling process, a buffer device is typically installed between the feeder and the rolling unit to buffer and discharge the molten glass. However, current buffer devices are all straight-through devices, with the feed and discharge ports positioned vertically opposite each other. The molten glass flows downward vertically under the action of gravity. During this process, the buffer device can affect the flow of the molten glass from the buffer device to the rolling unit, resulting in instability. This leads to poor uniformity in the rolled glass products, impacting product quality.

[0005] In view of this, it is particularly important to design and manufacture a buffer device and a glass rolling production line that can ensure the stable flow of molten glass, especially in glass manufacturing. Summary of the Invention

[0006] The purpose of the present disclosure is to provide a buffer device that can achieve a buffer function while ensuring a stable outflow of molten glass, thereby improving the uniformity of glass products and ensuring product quality.

[0007] Another object of the present disclosure is to provide a glass rolling production line that can achieve a buffering function while ensuring a stable outflow of molten glass, thereby improving the uniformity of glass products and ensuring product quality.

[0008] The present disclosure is implemented by adopting the following technical solutions.

[0009] On the one hand, the present disclosure proposes a cache device, including a cache chamber and a drainage channel, the cache chamber is relatively provided with a top wall and a bottom wall, the area of ​​the top wall is larger than the area of ​​the bottom wall, the top wall is provided with a feed port configured for inputting molten glass, the cache chamber is also provided with a guide side wall, the guide side wall is connected to the bottom wall, and is inclined to the bottom wall and extends toward the direction close to the top wall, the drainage channel is connected between the top wall and the guide side wall, and the drainage channel is configured to divert the molten glass in the cache chamber outward.

[0010] Optionally, a preset angle is formed between the guide side wall and the bottom wall, and the preset angle ranges from 15 degrees to 45 degrees.

[0011] Optionally, the spacing between the top wall and the bottom wall ranges from 200 mm to 300 mm.

[0012] Optionally, the cache chamber is further provided with a stop side wall, which is arranged opposite to the guide side wall, with one end of the stop side wall connected to the top wall and the other end connected to the bottom wall.

[0013] Optionally, the cache chamber is also provided with a first connecting side wall and a second connecting side wall, the first connecting side wall and the second connecting side wall are arranged opposite to each other, the guide side wall, the first connecting side wall, the stop side wall and the second connecting side wall are connected end to end, and are connected to the top wall and the bottom wall.

[0014] Optionally, the top wall is arranged parallel to the bottom wall, and the stop side wall is arranged perpendicular to both the top wall and the bottom wall.

[0015] Optionally, the distance between the feed port and the stop side wall ranges from 5 mm to 10 mm.

[0016] Optionally, the volume of the buffer chamber satisfies the following relationship: T1>T2=V / L; wherein T1 is the crystallization time of the glass melt, T2 is the residence time of the glass melt in the buffer chamber, V is the volume of the buffer chamber, and L is the discharge flow rate of the glass melt.

[0017] Optionally, the ratio of the volume of the buffer chamber to the hourly discharge flow rate of the glass melt is in a range of 0.15 to 0.3.

[0018] Optionally, the area of ​​the feed opening is smaller than the area of ​​the bottom wall, and the projection of the feed opening on the plane where the bottom wall is located is entirely located inside the bottom wall.

[0019] Optionally, the drainage channel is arranged perpendicular to the top wall, and the drainage channel extends out of the plane where the bottom wall is located.

[0020] Optionally, the cache device further includes a heating element, which is disposed outside the cache chamber and the drainage channel, and is configured to heat the cache chamber and the drainage channel.

[0021] Optionally, the heating element includes a heating base and a heating wire, the heating wire is wound outside the heating base, the heating wire is configured to heat the heating base, and the heating base is arranged outside the cache chamber and the drainage channel.

[0022] Optionally, the diameter of the heating wire satisfies the following relationship: Q = I 2 *R*T3;ρ=I(πr 2)<8A / mm2; where Q is the heat required for heating, I is the current passing through the heating wire, R is the resistance of the heating wire, T3 is the heating time, ρ is the current density passing through the heating wire, and r is the radius of the heating wire.

[0023] Optionally, the heating element includes a first heating element and a second heating element, the first heating element is covered outside the cache chamber, and the second heating element includes a first side heating part, a middle heating part and a second side heating part connected in sequence, and the first side heating part, the middle heating part and the second side heating part are arranged in sequence along the width direction of the drainage channel and are jointly covered outside the drainage channel.

[0024] Optionally, the cache device further includes a heat-insulating layer, which is disposed outside the heating element.

[0025] Optionally, the cache device further includes an outer protective shell, which is arranged outside the insulation layer.

[0026] Optionally, the cache device further includes a connecting flange, which is connected to the outside of the top wall and communicates with the feed port, and the connecting flange is configured to be connected to the feeding device.

[0027] Optionally, the feeding device is provided with a feeding pipe, and the feeding pipe is arranged above the buffer device at intervals.

[0028] On the other hand, the present disclosure also proposes a glass rolling production line, including the above-mentioned cache device, which includes a cache chamber and a drainage channel. The cache chamber is relatively provided with a top wall and a bottom wall, the area of ​​the top wall is larger than the area of ​​the bottom wall, and the top wall is provided with a feed port configured for inputting molten glass. The cache chamber is also provided with a guide side wall, which is connected to the bottom wall and is inclined to the bottom wall and extends in a direction close to the top wall. The drainage channel is connected between the top wall and the guide side wall, and the drainage channel is configured to discharge the molten glass in the cache chamber outward.

[0029] The buffer device and glass rolling production line provided by the present disclosure have the following beneficial effects:

[0030] The buffer device provided by the present disclosure has a buffer chamber with a top wall and a bottom wall relative to each other, the area of ​​the top wall being larger than the area of ​​the bottom wall, the top wall being provided with a feed port configured to input molten glass, the buffer chamber also being provided with a guide side wall connected to the bottom wall, inclined relative to the bottom wall, and extending toward the top wall, a drainage channel connected between the top wall and the guide side wall, and the drainage channel being configured to guide the molten glass in the buffer chamber outward. Compared with the prior art, the buffer device provided by the present disclosure, due to the use of the guide side wall inclined relative to the bottom wall and extending toward the top wall, and the drainage channel connected between the top wall and the guide side wall, can achieve a buffering function while ensuring a stable outflow of the molten glass, thereby improving the uniformity of the glass products and ensuring product quality.

[0031] The glass rolling production line provided by the present disclosure includes a buffer device, which can ensure the stable outflow of molten glass while realizing the buffer function, improve the uniformity of glass products, and ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0033] FIG1 is a schematic structural diagram of a glass rolling production line provided by an embodiment of the present disclosure;

[0034] FIG2 is a schematic structural diagram of a cache device provided in an embodiment of the present disclosure;

[0035] FIG3 is a cross-sectional view of a cache device provided in an embodiment of the present disclosure;

[0036] FIG4 is a schematic structural diagram of the connection between the cache chamber and the drainage channel in the cache device provided by an embodiment of the present disclosure from one perspective;

[0037] FIG5 is a schematic structural diagram of the connection between the cache chamber and the drainage channel in the cache device provided by an embodiment of the present disclosure from another perspective;

[0038] FIG6 is a schematic structural diagram of a heating element in a cache device according to an embodiment of the present disclosure;

[0039] FIG7 is a schematic structural diagram of a cache device provided in an embodiment of the present disclosure in which a heating element is disposed outside the cache chamber and the drainage channel.

[0040] Icons: 10 - glass rolling production line; 100 - cache device; 110 - cache chamber; 111 - top wall; 1111 - feed port; 112 - bottom wall; 113 - guide side wall; 114 - stop side wall; 115 - first connecting side wall; 116 - second connecting side wall; 120 - diversion channel; 130 - heating element; 131 - heating base; 132 - heating wire; 133 - first heating element; 134 - second heating element; 1341 - first side heating part; 1342 - middle heating part; 1343 - second side heating part; 140 - insulation layer; 150 - outer protective shell; 160 - connecting flange; 200 - forming chamber; 300 - rolling device; 400 - glass melt. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Generally, the components of the embodiments of the present disclosure described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the present disclosure as claimed, but merely represents selected embodiments of the present disclosure. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort shall fall within the scope of protection of the present disclosure.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0044] In the description of this disclosure, it should be noted that the terms "inside," "outside," "upper," "lower," and "horizontal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the disclosed product is typically placed when in use. These terms are intended solely to facilitate the description of this disclosure and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0046] At present, buffer devices are generally straight-through type, in which the feed port and the discharge port are arranged relative to each other in the vertical direction. The area of ​​the feed port is generally larger than that of the discharge port, and the glass melt flows vertically downward under the action of gravity. The author of the study found that during the use of this straight-through buffer device, since the glass melt is in a state of falling straight down, the glass melt stays in the buffer device for a short time. Since the glass melt will produce fluctuations when falling into the buffer device (similar to the ripples produced by water flowing into a pond), the glass melt will flow out of the discharge port to the calendering device before the fluctuations have completely subsided. As a result, the glass melt flowing out of the buffer device has poor stability, resulting in poor uniformity of the calendered glass products, affecting product quality.

[0047] In order to solve the above problems, the present disclosure provides a buffer device, which can ensure the stable outflow of molten glass while realizing the buffer function, improve the stability of the molten glass flowing to the rolling device, thereby improving the uniformity of the rolled glass products and ensuring product quality.

[0048] The following describes some embodiments of the present disclosure in detail with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0049] 1 , an embodiment of the present disclosure provides a glass rolling production line 10 configured to produce glass products. The production line can achieve a buffering function while ensuring a stable flow of molten glass 400, thereby improving the uniformity of the glass products and ensuring product quality.

[0050] It should be noted that the glass rolling production line 10 includes a forming chamber 200, a feeding device (not shown), a buffer device 100, and a rolling device 300. The feeding device, the buffer device 100, and the rolling device 300 are all installed in the forming chamber 200 and are arranged in sequence according to the flow direction of the molten glass 400. The feeding device is configured to feed the molten glass 400 into the buffer device 100. The buffer device 100 is configured to buffer the molten glass 400 and discharge the molten glass 400 to the rolling device 300 to realize the feeding function of the rolling device 300. The rolling device 300 is configured to roll the molten glass 400 to form a glass product.

[0051] Please refer to Figures 2 and 3. The cache device 100 includes a cache chamber 110, a drainage channel 120, a heating element 130, an insulation layer 140, and an outer protective shell 150. The cache chamber 110 is connected to the drainage channel 120. The feeding device is configured to transport the glass melt 400 to the cache chamber 110. The cache chamber 110 is configured to cache the glass melt 400 and allow the glass melt 400 to overflow into the drainage channel 120. The drainage channel 120 is configured to drain the glass melt 400 to the rolling device 300 so that the rolling device 300 can roll the glass melt 400 to obtain a glass product. Specifically, the heating element 130 is disposed outside the cache chamber 110 and the drainage channel 120. The heating element 130 is configured to heat the cache chamber 110 and the drainage channel 120 to achieve temperature control of the glass melt 400, prevent the glass melt 400 from crystallizing during the caching process, and ensure product quality. The insulation layer 140 is disposed outside the heating element 130 and is configured to provide insulation to prevent the ambient temperature from affecting the molten glass 400. An outer protective shell 150 is disposed outside the insulation layer 140 and is configured to shield and protect the insulation layer 140 to prevent damage to the buffer device 100 from external impacts. The outer protective shell 150 is installed within the molding chamber 200 and is also configured to secure the entire buffer device 100 in place.

[0052] In this embodiment, the cache chamber 110 and the drainage channel 120 are integrally formed to improve the connection strength and ensure airtightness, but it is not limited to this. In other embodiments, the cache chamber 110 can also be set separately from the drainage channel 120 and connected together by screw connection, clamping, bonding or riveting.

[0053] 4 and 5 , it is noteworthy that the cache chamber 110 is provided with a top wall 111, a bottom wall 112, a guide side wall 113, a stop side wall 114, a first connecting side wall 115, and a second connecting side wall 116. The top wall 111 and the bottom wall 112 are arranged opposite each other, the guide side wall 113 and the stop side wall 114 are arranged opposite each other, and the first connecting side wall 115 and the second connecting side wall 116 are arranged opposite each other. The guide side wall 113, the first connecting side wall 115, the stop side wall 114, and the second connecting side wall 116 are connected end to end and are simultaneously connected to the top wall 111 and the bottom wall 112. Specifically, the cache chamber 110 is placed horizontally, with the top wall 111 spaced apart above the bottom wall 112, and the guide side wall 113, the first connecting side wall 115, the stop side wall 114, and the second connecting side wall 116 are all arranged between the top wall 111 and the bottom wall 112.

[0054] Optionally, the area of ​​the top wall 111 is larger than the area of ​​the bottom wall 112, that is, the entire buffer chamber 110 has a hollow inverted trapezoidal shape. Referring also to FIG3 , the top wall 111 defines a feed port 1111 configured to feed the molten glass 400. A feeding device can feed the molten glass 400 into the buffer chamber 110 through the feed port 1111. The guide sidewall 113 is connected to the bottom wall 112 and is arranged obliquely relative to the bottom wall 112, extending toward the top wall 111. The guide sidewall 113 is configured to guide the molten glass 400 so that it stably flows toward the diversion channel 120. Specifically, the diversion channel 120 is connected between the top wall 111 and the guide sidewall 113. The diversion channel 120 is configured to guide the molten glass 400 within the buffer chamber 110 outward, so that the molten glass 400 stably flows to the rolling device 300. In this way, compared with the existing technology, the residence time of the glass melt 400 in the buffer chamber 110 is extended, so that the glass melt 400 flows out of the drainage channel 120 to the calendering device 300 only after the fluctuation is completely calmed down, thereby improving the flow stability of the glass melt 400, thereby improving the uniformity of the calendered glass products and ensuring product quality.

[0055] It can be understood that during the glass rolling production process, the feeding device inputs the glass melt 400 into the buffer chamber 110 to gradually increase the liquid level of the glass melt 400 in the buffer chamber 110; when the liquid level of the glass melt 400 is higher than the top of the guide side wall 113, the glass melt 400 overflows into the drainage channel 120 and flows to the rolling device 300 through the drainage channel 120. During this process, the guide side wall 113 guides the glass melt 400 to ensure the stability of the flow of the glass melt 400 and the diversion effect is good; since the glass rolling production line 10 will not stop unless there are special circumstances, the feeding device will continue to input the glass melt 400 into the buffer chamber 110 according to the preset flow rate to achieve continuous rolling production of glass products.

[0056] It should be noted that a preset angle is formed between the guide side wall 113 and the bottom wall 112. The preset angle is the angle between the side of the guide side wall 113 closest to the bottom wall 112 and the plane on which the bottom wall 112 lies. The preset angle ranges from 15 degrees to 45 degrees. A reasonable preset angle can ensure that the molten glass 400 at the bottom of the buffer chamber 110 flows upward along the guide side wall 113 under the extrusion of the molten glass 400 entering later, thereby avoiding the situation where the molten glass 400 at the bottom of the buffer chamber 110 has poor fluidity or even does not flow. For ease of understanding, the preset angle is represented by a. In this embodiment, the preset angle is 45 degrees, but is not limited thereto. In other embodiments, the preset angle can be 15 degrees or 30 degrees, and the size of the preset angle is not specifically limited.

[0057] Optionally, the distance between the top wall 111 and the bottom wall 112 ranges from 200 mm to 300 mm, i.e., the depth of the buffer chamber 110 ranges from 200 mm to 300 mm. A reasonable distance between the top wall 111 and the bottom wall 112 ensures that the buffer chamber 110 has sufficient space to smooth out the turbulence generated by the inflow of the molten glass 400, thereby enhancing the efficiency and effectiveness of smoothing out the turbulence. In this embodiment, the distance between the top wall 111 and the bottom wall 112 is 280 mm, but is not limited thereto. In other embodiments, the distance between the top wall 111 and the bottom wall 112 can be 200 mm or 300 mm. The distance between the top wall 111 and the bottom wall 112 is not specifically limited.

[0058] In this embodiment, the buffer chamber 110 is in the shape of a hollow, inverted right-angled trapezoid. A top wall 111 is arranged parallel to the bottom wall 112. A stopper sidewall 114 is connected to the top wall 111 at one end and to the bottom wall 112 at the other end. The stopper sidewall 114 is arranged perpendicular to both the top wall 111 and the bottom wall 112. A first connecting sidewall 115 is arranged parallel to the second connecting sidewall 116. The stopper sidewall 114 is connected to the first connecting sidewall 115 at one end and to the second connecting sidewall 116 at the other end. The stopper sidewall 114 is arranged perpendicular to both the first connecting sidewall 115 and the second connecting sidewall 116.

[0059] Optionally, the distance between the feed port 1111 and the stop sidewall 114 ranges from 5 mm to 10 mm. A reasonable distance between the feed port 1111 and the stop sidewall 114 can maximize the distance between the feed port 1111 and the drainage channel 120 while ensuring a smoothing effect on fluctuations, thereby preventing the feed temperature of the molten glass 400 (the temperature of the molten glass 400 upon entering the feed port 1111) from affecting the discharge temperature (the temperature of the molten glass 400 upon exiting the drainage channel 120). In this embodiment, the distance between the feed port 1111 and the stop sidewall 114 is 8 mm, but is not limited thereto. In other embodiments, the distance between the feed port 1111 and the stop sidewall 114 can be 5 mm or 10 mm. The distance between the feed port 1111 and the stop sidewall 114 is not specifically limited.

[0060] It is noteworthy that the volume of the buffer chamber 110 satisfies the following relationship: T1>T2=V / L; wherein T1 is the crystallization time of the glass melt 400, T2 is the residence time of the glass melt 400 in the buffer chamber 110, V is the volume of the buffer chamber 110, and L is the discharge flow rate of the glass melt 400. Specifically, although the buffer device 100 can extend the residence time of the glass melt 400 in the buffer chamber 110 to improve the flow stability of the glass melt 400, this residence time cannot be too long. In order to prevent the glass melt 400 from crystallizing in the buffer chamber 110, it is necessary to control the residence time of the glass melt 400 in the buffer chamber 110 to be less than the crystallization time of the glass melt 400. The residence time of the glass melt 400 in the buffer chamber 110 is controlled by the volume of the buffer chamber 110 and the discharge flow rate of the glass melt 400. Therefore, it is necessary to control the volume of the buffer chamber 110 to satisfy the above relationship.

[0061] In addition, if the material of the glass melt 400 is different, the crystallization time of the glass melt 400 is different. At this time, the volume of the buffer chamber 110 and the discharge flow rate of the glass melt 400 need to be adjusted accordingly to ensure that the residence time of the glass melt 400 in the buffer chamber 110 is less than the crystallization time of the glass melt 400, thereby improving the versatility of the cache device 100 and making it suitable for glass melts 400 of different material formulas.

[0062] Optionally, the ratio of the volume of the buffer chamber 110 to the hourly discharge flow rate of the glass melt 400 ranges from 0.15 to 0.3. A reasonable ratio of the volume of the buffer chamber 110 to the hourly discharge flow rate of the glass melt 400 can ensure the stability of the discharge amount of the glass melt 400 and prevent crystallization of the glass melt 400. In this embodiment, the ratio of the volume of the buffer chamber 110 to the hourly discharge flow rate of the glass melt 400 is 0.2, but is not limited thereto. In other embodiments, the ratio of the volume of the buffer chamber 110 to the hourly discharge flow rate of the glass melt 400 can be 0.15 or 0.3. There is no specific limitation on the ratio of the volume of the buffer chamber 110 to the hourly discharge flow rate of the glass melt 400.

[0063] It should be noted that the area of ​​the feed port 1111 is smaller than the area of ​​the bottom wall 112, and the projection of the feed port 1111 on the plane where the bottom wall 112 is located is all located inside the bottom wall 112, so as to ensure that the glass melt 400 entering from the feed port 1111 can fall to the bottom position of the buffer chamber 110, thereby further avoiding the situation where the glass melt 400 at the bottom of the buffer chamber 110 has poor fluidity or even does not flow.

[0064] In this embodiment, the buffer device 100 further includes a connecting flange 160, which is connected to the outside of the top wall 111 and communicates with the feed port 1111. The connecting flange 160 is configured to connect to the feeding device to ensure the stability of the feeding process, allowing the molten glass 400 to stably flow into the feed port 1111. Specifically, the ratio of the inner diameter of the connecting flange 160 to the diameter of the feed port 1111 is in a range of 2 to 4. This prevents the molten glass 400 from rapidly cooling if it leaks from the joint of the connecting flange 160, thereby sealing the leakage port.

[0065] It is worth noting that the feeding device is provided with a feeding pipe (not shown). In the prior art, the feeding pipe is spaced apart above the buffer device. The glass melt output from the feeding pipe is partially exposed to the outside air and then flows into the buffer device. In this way, on the one hand, the outside ambient temperature will affect the temperature of the glass melt, thereby affecting the product quality. On the other hand, air may be drawn into the glass melt, resulting in bubble defects in the product. In the present disclosure, the feeding pipe is vertically downwardly extended into the connecting flange 160 and the feed port 1111 in sequence. The bottom end of the feeding pipe is immersed below the liquid surface of the glass melt 400 to prevent the glass melt 400 from contacting the outside air, thereby avoiding the outside ambient temperature from affecting the temperature of the glass melt 400 and avoiding the glass melt 400 from being drawn into air and causing bubble defects, which is stable and reliable.

[0066] Optionally, the cross-sectional area of ​​the drainage channel 120 is larger than the cross-sectional area of ​​the feed tube to ensure that the molten glass 400 overflowing from the buffer chamber 110 can flow out completely, thereby ensuring the discharge volume. Specifically, the ratio of the cross-sectional area of ​​the drainage channel 120 to the cross-sectional area of ​​the feed tube is in a range of 2 to 5. A reasonable ratio of the cross-sectional area of ​​the drainage channel 120 to the cross-sectional area of ​​the feed tube can ensure the discharge volume of the molten glass 400, thereby ensuring product quality.

[0067] In this embodiment, the difference between the diameter of the feed port 1111 and the outer diameter of the feed pipe ranges from 5 mm to 15 mm. A reasonable difference between the diameter of the feed port 1111 and the outer diameter of the feed pipe can effectively prevent the feed pipe from contacting the inner wall of the feed port 1111, thereby avoiding the mutual influence between the temperature of the feed pipe and the temperature of the top wall 111.

[0068] It should be noted that the drainage channel 120 is rectangular and perpendicular to the top wall 111, that is, parallel to the stopper sidewall 114, to facilitate vertical downward flow of the molten glass 400 and improve the flow stability of the molten glass 400. Specifically, the drainage channel 120 extends beyond the plane of the bottom wall 112, that is, the length of the drainage channel 120 is greater than the depth of the buffer chamber 110, to facilitate installation and commissioning of the rolling device 300.

[0069] Referring to Figures 6 and 7 , the heating element 130 includes a heating base 131 and a heating wire 132. The heating wire 132 is wound around the outside of the heating base 131 and configured to heat the heating base 131. After winding, the heating wire 132 is sealed with refractory clay to ensure effective heating. The heating base 131 is disposed outside the buffer chamber 110 and the drainage channel 120 and is configured to transfer heat to the buffer chamber 110 and the drainage channel 120, thereby heating the molten glass 400 within the buffer chamber 110 and the drainage channel 120.

[0070] It is worth noting that the diameter of the heating wire 132 satisfies the following relationship: Q = I 2 *R*T3;ρ=I(πr 2 ) < 8 A / mm²; where Q is the amount of heat required for heating, I is the current flowing through the heating wire 132, R is the resistance of the heating wire 132, T3 is the heating time, ρ is the current density flowing through the heating wire 132, and r is the radius of the heating wire 132. Specifically, the current density flowing through the heating wire 132 is limited to below 8 A / mm² to maximize heating efficiency while ensuring safety, thereby improving the accuracy of temperature control.

[0071] The heating element 130 includes a first heating element 133 and a second heating element 134. The first heating element 133 and the second heating element 134 have the same structure (each including a heating base 131 and a heating wire 132). The first heating element 133 is coated on the outside of the buffer chamber 110 and is configured to heat the buffer chamber 110. The second heating element 134 is coated on the outside of the drainage channel 120 and is configured to heat the drainage channel 120.

[0072] In this embodiment, the second heating element 134 includes a first side heating portion 1341, a middle heating portion 1342 and a second side heating portion 1343 connected in sequence. The first side heating portion 1341, the middle heating portion 1342 and the second side heating portion 1343 are arranged in sequence along the width direction of the drainage channel 120 and are jointly covered on the outside of the drainage channel 120. The first side heating portion 1341 is configured to heat one side portion of the glass melt 400, the middle heating portion 1342 is configured to heat the middle portion of the glass melt 400, and the second side heating portion 1343 is configured to heat the other side portion of the glass melt 400.

[0073] It is understandable that during the discharge process of the glass melt 400 , the temperature of the two side edges is generally lower than that of the middle portion in the width direction of the glass melt 400 , resulting in a certain temperature difference in the width direction of the glass melt 400 . In this regard, in the present disclosure, the first side heating part 1341, the middle heating part 1342 and the second side heating part 1343 are used to realize zoned heating and temperature control of the glass melt 400, wherein the heating power of the first side heating part 1341 and the second side heating part 1343 is greater than the heating power of the middle heating part 1342, so that the temperature compensation of the first side heating part 1341 on one side of the glass melt 400 and the temperature compensation of the second side heating part 1343 on the other side of the glass melt 400 are both greater than the temperature compensation of the middle heating part 1342 on the middle part of the glass melt 400. In this way, the temperature of the glass melt 400 after temperature rise remains the same in the width direction, ensuring that the temperature of the glass melt 400 flowing out of the drainage channel 120 is uniform, improving the uniformity of the heating process and the consistency of the feed temperature, thereby improving the molding quality of the glass product.

[0074] It should be noted that the wall thickness of the cache chamber 110 ranges from 0.5 mm to 2 mm. A reasonable wall thickness of the cache chamber 110 can save material costs while ensuring strength and enhance thermal conductivity. The cache chamber 110 is made of platinum, rhodium, or a platinum-rhodium alloy. The insulation layer 140 is made of insulating bricks. The shape of the insulation layer 140 is adapted to the shape of the cache chamber 110 and the drainage channel 120 (the insulation layer 140 is partially embedded between the drainage channel 120 and the drainage sidewall 113). The outer protective shell 150 is made of high-temperature resistant steel.

[0075] The cache device 100 provided by the embodiment of the present disclosure has a cache chamber 110 with a top wall 111 and a bottom wall 112 relatively arranged therebetween. The area of ​​the top wall 111 is larger than that of the bottom wall 112. The top wall 111 is provided with a feed port 1111 configured to input the glass melt 400. The cache chamber 110 is also provided with a guide side wall 113, which is connected to the bottom wall 112 and is inclined to the bottom wall 112 and extends in a direction close to the top wall 111. The drainage channel 120 is connected between the top wall 111 and the guide side wall 113. The drainage channel 120 is configured to guide the glass melt 400 in the cache chamber 110 outward. Compared to the prior art, the buffer device 100 provided by the present disclosure utilizes a guide side wall 113 that is inclined relative to the bottom wall 112 and extends toward the top wall 111, and a guide channel 120 connected between the top wall 111 and the guide side wall 113. Thus, the buffer device 100 can achieve a buffering function while ensuring a stable outflow of the molten glass 400, thereby improving the uniformity of the glass products and ensuring product quality. This results in high product quality and a high yield rate for the glass rolling line 10.

[0076] The above are merely preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be within the scope of protection of the present disclosure. Industrial Applicability

[0077] The buffer device provided by the present disclosure is provided with a drainage channel. The drainage channel is arranged on a guide side wall that is inclined with respect to the bottom wall and extends toward the top wall, and is connected between the top wall and the guide side wall. This arrangement can achieve a buffering function while ensuring a stable outflow of molten glass, improving the uniformity of glass products and ensuring product quality. This ensures that the glass rolling production line has high product quality and a high yield rate.

Claims

1. A cache device, characterized in that, It includes a buffer chamber and a drainage channel. The buffer chamber is provided with a top wall and a bottom wall which are oppositely arranged. The area of the top wall is larger than that of the bottom wall. The top wall is provided with a feed port configured to input molten glass. The buffer chamber is further provided with a diversion side wall which is connected to the bottom wall and is inclined with respect to the bottom wall and extends towards the direction close to the top wall. The drainage channel is connected between the top wall and the diversion side wall and is configured to outwardly discharge the molten glass in the buffer chamber.

2. The cache device according to claim 1, wherein A preset angle is formed between the diversion side wall and the bottom wall, and the range of the preset angle is from 15 degrees to 45 degrees.

3. The cache device according to claim 1 or 2, wherein The distance between the top wall and the bottom wall ranges from 200 millimeters to 300 millimeters.

4. The cache device according to any one of claims 1 to 3, characterized in that, The buffer chamber is further provided with a stop side wall which is oppositely arranged with the diversion side wall. One end of the stop side wall is connected to the top wall and the other end is connected to the bottom wall.

5. The cache device according to claim 4, wherein The buffer chamber is further provided with a first connection side wall and a second connection side wall which are oppositely arranged. The diversion side wall, the first connection side wall, the stop side wall and the second connection side wall are connected end to end and are connected to the top wall and the bottom wall.

6. The cache device according to claim 4 or 5, characterized in that The top wall is arranged parallel to the bottom wall, and the stop side wall is arranged perpendicular to both the top wall and the bottom wall.

7. The cache device according to any one of claims 4 to 6, characterized in that, The distance between the feed port and the stop side wall ranges from 5 millimeters to 10 millimeters.

8. The cache device according to any one of claims 1 to 7, characterized in that, The volume of the buffer chamber satisfies the following relational expression: T1>T2=V / L; In the formula, T1 is the crystallization time of the molten glass, T2 is the residence time of the molten glass in the buffer chamber, V is the volume of the buffer chamber, and L is the discharge flow rate of the molten glass.

9. The cache device according to claim 8, wherein The ratio of the volume of the buffer chamber to the discharge flow rate of the molten glass per hour ranges from 0.15 to 0.

3.

10. The cache device according to any one of claims 1 to 9, characterized in that, The area of the feed port is smaller than that of the bottom wall, and the projection of the feed port on the plane where the bottom wall is located is entirely within the bottom wall.

11. The cache device according to any one of claims 1 to 10, characterized in that, The drainage channel is perpendicular to the top wall and extends out of the plane where the bottom wall is located.

12. The cache device according to any one of claims 1 to 11, characterized in that, The buffer device further includes a heating member which is arranged outside the buffer chamber and the drainage channel and is configured to heat the buffer chamber and the drainage channel.

13. The cache device according to claim 12, characterized in that, The heating member includes a heating base body and an electric heating wire. The electric heating wire is wound around the outside of the heating base body and is configured to heat the heating base body. The heating base body is arranged outside the buffer chamber and the drainage channel.

14. The cache device according to claim 13, wherein, The diameter of the heating wire satisfies the following relationship: Q = I 2 *R*T3; ρ = I(πr 2 ) < 8 A / mm²; In the formula, Q is the heat required for heating, I is the current passing through the electric heating wire, R is the resistance of the electric heating wire, T3 is the heating time, ρ is the current density passing through the electric heating wire, and r is the radius of the electric heating wire.

15. The cache device according to claim 12, wherein The heating member includes a first heating member and a second heating member. The first heating member is coated outside the buffer chamber. The second heating member includes a first side heating portion, a middle heating portion and a second side heating portion which are sequentially connected. The first side heating portion, the middle heating portion and the second side heating portion are sequentially arranged along the width direction of the drainage channel and are jointly coated outside the drainage channel.

16. The cache device according to any one of claims 12 to 15, characterized in that, The caching device further includes a heat insulation layer, and the heat insulation layer is disposed outside the heating element.

17. The cache device according to claim 16, wherein The caching device further includes an outer protective shell, and the outer protective shell is disposed outside the heat insulation layer.

18. The cache device according to any one of claims 1 to 17, characterized in that, The caching device further includes a connecting flange, the connecting flange is connected to the outside of the top wall and communicates with the feed inlet, and the connecting flange is configured to be connected to a feeding device.

19. The cache device according to claim 18, characterized in that, The feeding device is provided with a feeding pipe, and the feeding pipe is spaced above the caching device.

20. A glass rolling production line, characterized in that, It includes the caching device according to any one of claims 1 to 19.

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