Overflow device and glass production system

Abstract

The utility model provides an overflow device and a glass production system, and relates to the technical field of glass production, the overflow device comprises a first channel and an overflow assembly, the overflow assembly comprises a driver, a plurality of overflow blocks and an overflow channel communicated with the downstream of the first channel, the driver can be controlled to drive the overflow block to ascend and descend so as to adjust the overflow height of the overflow channel. The overflow device can be applied to molten glass overflow, a mode of adjusting the overflow height by padding a molybdenum sheet is replaced, the overflow height of the overflow channel can be adjusted by driving the overflow block through the driver, and a switch of the driver can be arranged at a position far away from the overflow channel or in a remote control mode. Operators are prevented from adjusting the overflow amount in a high-temperature environment, the operation safety is high, and potential safety hazards caused by the high-temperature environment are reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of glass production, and in particular to an overflow device and a glass production system. Background Art

[0002] Due to its easy stratification and volatility, borosilicate pharmaceutical glass often requires a middle layer of glass liquid with stable composition to be formed, and the upper layer of inhomogeneous glass liquid is discharged by overflow. For glass liquids of different qualities, different overflow volumes need to be adjusted. The current adjustment method is to manually add different numbers of molybdenum sheets to the overflow port and change the overflow volume by changing the overflow height. Since the glass liquid is at a high temperature, this method of adjusting the overflow volume requires the operator to add molybdenum sheets in a high temperature environment, which poses a safety hazard. Utility Model Content

[0003] A technical problem to be solved by the present disclosure is that adjusting the overflow volume requires operators to pad molybdenum sheets in a high temperature environment, which poses a safety hazard.

[0004] To solve the above technical problems, an embodiment of the present disclosure provides an overflow device, comprising: a first channel, the first channel is configured to be able to flow liquid; and an overflow assembly, the overflow assembly includes a driver, a plurality of overflow blocks and an overflow channel connected to the downstream of the first channel, at least two overflow blocks are arranged opposite to each other so that the liquid overflows from both sides of the overflow channel to the top surface of the overflow block, and the driver can be controlled to drive the overflow block to rise and fall to adjust the overflow height of the overflow channel.

[0005] In some embodiments, the top surface of the overflow block is arranged to be inclined upward along the flow direction of the slurry; and / or, the overflow assembly includes a bottom plate, the overflow block is slidably matched with the bottom plate, and at least two overflow blocks are arranged on opposite sides of the bottom plate, and the opposite surfaces of the relatively arranged overflow blocks and the top surface of the bottom plate form an overflow channel.

[0006] In some embodiments, the overflow assembly includes a plurality of drivers disposed under the overflow block, and at least two drivers correspond to the overflow blocks disposed under different sides.

[0007] In some embodiments, the overflow device includes a first drainage block, a groove is formed on the first drainage block, the groove is formed as a first channel, and the overflow block is slidably matched with the first drainage block.

[0008] In some embodiments, the overflow device further includes a second channel connected downstream of the overflow channel.

[0009] In some embodiments, the overflow device further comprises a second drainage block, a through opening is formed on the second drainage block, the through opening is formed as a second channel, and the overflow block is slidably matched with the second drainage block.

[0010] In some embodiments, the overflow device also includes a heat-insulating cover arranged above the first channel and the overflow channel, and an overflow gap is formed between the inner wall surface of the heat-insulating cover and the side wall surface of the overflow block so that the liquid overflowing to the top surface of the overflow block can fall into the overflow gap.

[0011] In some embodiments, the overflow device also includes a collecting container connected to the overflow gap, and the collecting container is configured to collect the liquid falling into the overflow gap; and / or, the overflow device also includes a heater, which is used to heat the liquid in the first channel and the overflow channel.

[0012] In some embodiments, the heater includes a plurality of burners fixed on the heat-insulating cover and spaced apart from each other, and outlets of the burners face the first channel and the overflow channel.

[0013] The disclosed embodiment further provides a glass production system, comprising a glass liquid conveying device and the above-mentioned overflow device, wherein the overflow device is arranged downstream of the glass liquid conveying device.

[0014] Through the above technical scheme, the overflow device provided by the present invention can be applied to glass liquid overflow. Instead of adjusting the overflow height by adding a molybdenum sheet, the overflow height of the overflow channel can be adjusted by driving the overflow block by a driver. The switch of the driver can be set at a position away from the overflow channel, or set to a remote control mode to avoid the operator adjusting the overflow amount in a high temperature environment. The operation is highly safe and the safety hazards caused by the high temperature environment are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present disclosure 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 disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 is a schematic diagram of the structure of the overflow device disclosed in the embodiment of the present disclosure;

[0017] Figure 2 is a schematic diagram of the structure of the overflow device excluding the heat preservation cover, the collection container and the heater; and

[0018] Figure 3 It is a structural schematic diagram of the overflow block, the driver, a part of the first drainage block and a part of the second drainage block of the overflow device.

[0019] Description of reference numerals:

[0020] 10. First drainage block; 11. First channel; 20. Overflow assembly; 21. Driver; 22. Overflow block; 23. Overflow channel; 24. Bottom plate; 30. Second drainage block; 31. Second channel; 40. Insulation cover; 50. Collection container; 60. Heater; 61. Burner. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0022] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0023] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0024] In addition, the words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0025] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0026] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0028] Please see Figures 1 to 3 The embodiment of the present disclosure provides an overflow device, including: a first channel 11, the first channel 11 is configured to be able to flow liquid; and an overflow component 20, the overflow component 20 includes a driver 21, a plurality of overflow blocks 22 and an overflow channel 23 connected to the downstream of the first channel 11, at least two overflow blocks 22 are arranged opposite to each other so that the liquid overflows from both sides of the overflow channel 23 to the top surface of the overflow block 22, and the driver 21 can be controlled to drive the overflow block 22 to rise and fall to adjust the overflow height of the overflow channel 23.

[0029] In this embodiment, the first channel 11 guides the liquid into the overflow channel 23, and the upper liquid in the overflow channel 23 flows along both sides of the overflow channel 23 to the top surface of the overflow block 22. The liquid after passing through the overflow channel 23 is the liquid after the upper layer is separated. When the overflow amount needs to be adjusted, the overflow block 22 is driven to rise and fall by controlling the driver 21, thereby changing the height of the overflow channel 23, and then changing the size of the overflow amount. In this adjustment method, the switch of the driver 21 can be set at a position away from the overflow channel 23, or set to a remote control method to avoid the operator approaching the overflow channel 23 to adjust the overflow amount. When the liquid is glass liquid, the overflow environment is a high-temperature environment, which can keep the operator away from the high-temperature environment and reduce safety hazards. Compared with the method of manually padding and adding molybdenum sheets to adjust the overflow amount, the driver 21 can adjust the overflow amount more accurately. In addition, the method of overflowing the liquid from both sides at the same time can enhance the overflow efficiency of the liquid.

[0030] Specifically, there are two overflow blocks 22 arranged opposite to each other. The lowest point of the top surface of the overflow block 22 is lower than the highest point of the first channel 11, so as to ensure that the liquid in the first channel 11 can overflow smoothly. The overflow device can be applied to the overflow of glass liquid, in which case the liquid is glass liquid. The overflow block 22 can be made of high temperature resistant bricks, and the top surface of each overflow block 22 and the side surface facing another overflow block 22 can be coated with platinum to enhance the corrosion resistance of the overflow block 22.

[0031] Please see Figures 1 to 3In some embodiments, the top surface of the overflow block 22 is inclined upward along the flow direction of the slurry.

[0032] Through the above arrangement, on the one hand, the top surface of the overflow block 22 tilted upward can slow down the flow speed of the liquid, preventing the liquid from scouring the downstream components of the overflow assembly 20 (the second drainage block 30 described below) at high speed, thereby reducing the erosion of the components by the liquid. On the other hand, the flowing liquid can move smoothly along the top surface of the overflow block 22, preventing the liquid from scouring the overflow block 22 for a long time and causing damage or corrosion to the overflow block 22, thereby preventing leakage of the liquid and extending the service life of the overflow block 22.

[0033] Please see Figures 1 to 3 In some embodiments, the overflow assembly 20 includes a bottom plate 24, an overflow block 22 slidingly cooperates with the bottom plate 24, and at least two overflow blocks 22 are arranged on opposite sides of the bottom plate 24, and the opposite surfaces of the relatively arranged overflow blocks 22 and the top surface of the bottom plate 24 form an overflow channel 23.

[0034] In this embodiment, the bottom plate 24 is used to form a “U”-shaped overflow channel 23 together with the overflow block 22 . The bottom plate 24 is fixed, and the overflow block 22 can be raised and lowered relative to the bottom plate 24 . The overflow block 22 is used to limit the height of the overflow channel 23 .

[0035] Specifically, the overflow block 22 and the bottom plate 24 can be in a sealed sliding fit, which can prevent the slurry from flowing into the gap between the overflow block 22 and the bottom plate 24. The overflow block 22 and the bottom plate 24 can also achieve ordinary sliding fit through a slider and a slide groove. In this fit mode, the slurry will flow into the sliding fit gap between the overflow block 22 and the bottom plate 24. When the slurry is glass liquid, the viscosity of the glass liquid at high temperature is small, and even if it flows into the gap, it will not affect the sliding of the overflow block 22 relative to the bottom plate 24.

[0036] Please see Figures 1 to 3 In some embodiments, the overflow assembly 20 includes a plurality of drivers 21 disposed under the overflow block 22, and at least two drivers 21 correspond to the overflow blocks 22 disposed on different sides.

[0037] Through the above arrangement, the overflow blocks 22 arranged on different sides are driven by different drivers 21, so that no linkage components need to be arranged between the drivers 21 on different sides, thereby reducing the complexity of the overall structure.

[0038] Specifically, two drivers 21 are provided, and one corresponds to two overflow blocks 22. The driver 21 can be a lifting cylinder, a lifting hydraulic cylinder or a ball screw, and the driving direction is a vertical direction. The driving end of the driver 21 is connected to the bottom surface of the overflow block 22. The bottom surface of the overflow block 22 is a plane, which is convenient for connection with the driver 21. The driver 21 suspends and supports the overflow block 22, so that the overflow block 22 can be lifted and lowered under the drive of the driver 21.

[0039] Please see Figures 1 to 3 In some embodiments, the overflow device includes a first drainage block 10 , a groove is formed on the first drainage block 10 , the groove is formed as a first channel 11 , and the overflow block 22 is slidably matched with the first drainage block 10 .

[0040] In this embodiment, the groove is a square "U"-shaped groove with an upward opening to avoid affecting the stratification of the slurry in the first channel 11, that is, there is no obstruction above the first channel 11, which provides sufficient stratification space for the slurry in the first channel 11, so that the slurry can be stratified during the flow in the first channel 11.

[0041] Specifically, the top surface of the bottom plate 24 of the overflow assembly 20 is flush with the bottom surface of the groove, so that the liquid can flow smoothly from the first channel 11 to the overflow channel 23, avoiding the destruction of the stratification of the liquid due to the height difference. The bottom plate 24 of the overflow assembly 20 and the first drainage block 10 can be made into a seamless form to avoid leakage of the liquid from the gap between the bottom plate 24 and the bottom of the groove. The first drainage block 10 can be made of high temperature resistant bricks.

[0042] The overflow block 22 and the first drainage block 10 may be in a sealed sliding fit, which can prevent the slurry from flowing into the gap between the overflow block 22 and the first drainage block 10. Figure 3 As shown, the overflow block 22 and the first drainage block 10 can also achieve ordinary sliding cooperation through a slider and a slide groove. In this cooperation mode, the slider is formed by extending the side of the first drainage block 10 toward the overflow block 22, and the slide groove is formed by opening the side of the overflow block 22 toward the first drainage block 10. The slurry will flow into the sliding cooperation gap between the overflow block 22 and the first drainage block 10. When the slurry is glass liquid, the viscosity of the glass liquid at high temperature is small, and even if it flows into the gap, it will not affect the sliding of the overflow block 22 relative to the first drainage block 10.

[0043] When the material liquid is glass liquid, during actual use, the liquid level of the glass liquid is greater than or equal to two-thirds of the side wall of the groove. During the flow of the glass liquid in the first channel 11, the lightweight glass produced inside the glass liquid can gradually float to the surface so that it can overflow and be discharged in the overflow channel 23.

[0044] Please see Figures 1 to 3 In some embodiments, the overflow device further includes a second channel 31 connected to the downstream of the overflow channel 23 .

[0045] Through the above arrangement, the liquid that overflows through the overflow channel 23 enters the second channel 31 . The liquid in the second channel 31 is the desired liquid after the upper layer is separated, which is convenient for collection.

[0046] Please see Figures 1 to 3 In some embodiments, the overflow device further includes a second drainage block 30 , a through opening is formed on the second drainage block 30 , and the through opening is formed as a second channel 31 , and the overflow block 22 is slidably matched with the second drainage block 30 .

[0047] In this embodiment, the second channel 31 is formed by a through-hole with two ends open and four sides closed. The liquid enters from one end of the through-hole and flows out from the other end. The height of the through-hole ( Figure 2 The dimension in the vertical direction) is smaller than the height of the overflow channel 23. On the one hand, the overflowed liquid can fill the second channel 31 to prevent the liquid in the second channel 31 from volatilizing. On the other hand, the second channel 31 can limit the free movement inside the liquid to reduce the possibility of the liquid being stratified again. On the other hand, the upper layer of liquid in the overflow channel 23 can be intercepted outside the second channel 31 to enhance the overflow effect.

[0048] Specifically, the through opening is a through opening passing through the second drainage block 30, and its extending direction is the same as the flow direction of the feed liquid. The bottom surface of the through opening is flush with the top surface of the bottom plate 24 of the overflow assembly 20, so that the feed liquid can flow smoothly from the overflow channel 23 to the overflow channel 23. The bottom surface of the through opening and the bottom plate 24 can be made into a seamless form to prevent the feed liquid from leaking from the gap between the two. The second drainage block 30 can be made of high temperature resistant bricks. The overflow block 22 is a right-angled trapezoidal block structure, and its upper bottom surface with a smaller area is slidably matched with the first drainage block 10, and the lower bottom surface with a larger area is slidably matched with the second drainage block 30.

[0049] The overflow block 22 and the second drainage block 30 may be sealed and slidably matched, so as to prevent the liquid from flowing into the gap between the overflow block 22 and the second drainage block 30. Figure 3 As shown, the overflow block 22 and the second drainage block 30 can also achieve ordinary sliding cooperation through a slider and a slide groove. In this cooperation mode, the slider is formed by extending the side of the second drainage block 30 toward the overflow block 22, and the slide groove is formed by opening the side of the overflow block 22 toward the second drainage block 30. The slurry will flow into the sliding cooperation gap between the overflow block 22 and the second drainage block 30. When the slurry is glass liquid, the viscosity of the glass liquid at high temperature is small, and even if it flows into the gap, it will not affect the sliding of the overflow block 22 relative to the second drainage block 30.

[0050] Please see Figures 1 to 3 In some embodiments, the overflow device also includes a heat-insulating cover 40 disposed above the first channel 11 and the overflow channel 23, and an overflow gap is formed between the inner wall surface of the heat-insulating cover 40 and the side wall surface of the overflow block 22, so that the liquid overflowing to the top surface of the overflow block 22 can fall into the overflow gap.

[0051] In this embodiment, when the material liquid is high-temperature glass liquid, the heat preservation cover 40 can prevent the temperature of the glass liquid in the first channel 11, the overflow channel 23 and the second channel 31 from decreasing, ensuring that the glass liquid has sufficient fluidity, thereby ensuring that the glass liquid has sufficient flow speed, and further ensuring the overflow efficiency of the glass liquid. In addition, in order to prevent the heat preservation cover 40 from limiting the discharge of the upper material liquid on the top surface of the overflow block 22, an overflow gap is provided so that the upper material liquid gathered on the top surface of the overflow block 22 can fall from the overflow gap.

[0052] Specifically, the thermal insulation cover 40 is arranged on the first drainage block 10, the overflow assembly 20 and the second drainage block 30. The thermal insulation cover 40 can be a cover structure made of high-temperature resistant bricks. The inner wall surface of the thermal insulation cover 40 is in contact with the side wall surface of the first drainage block 10 and the side wall surface of the second drainage block 30 to ensure sufficient thermal insulation effect.

[0053] Please see Figures 1 to 3 In some embodiments, the overflow device further includes a collecting container 50 connected to the overflow gap, and the collecting container 50 is configured to collect the liquid falling into the overflow gap.

[0054] Through the above arrangement, the overflowing upper layer of liquid can be collected by the collecting container 50 to prevent the liquid from falling into the area where the driver 21 is located, thereby preventing the liquid from affecting the use of the driver 21 .

[0055] Specifically, the collecting container 50 is a box-type structure with an open top, the opening of which faces upward and the width of the opening is greater than the width of the overflow gap, so that all liquid falling into the overflow gap can enter the collecting container 50; the height of the collecting container 50 is equal to or less than the minimum driving height of the driver 21, and when the overflow block 22 drops to the lowest limit, it contacts the top surface of the collecting container 50 or is higher than the top surface of the collecting container 50, that is, the setting of the collecting container 50 will not interfere with the lifting and lowering of the overflow block 22.

[0056] The two overflow blocks 22 arranged on both sides correspond to a collecting container 50 respectively. A first discharge hole can be opened on the collecting container 50, and a second discharge hole coaxially connected to the first discharge hole can be opened on the heat preservation cover 40 to discharge the liquid in the collecting container 50 in time.

[0057] Please see Figures 1 to 3In some embodiments, the overflow device further includes a heater 60 , and the heater 60 is used to heat the liquid in the first channel 11 and the overflow channel 23 .

[0058] In this embodiment, since the inlet and outlet of the overflow device for the feed liquid are both connected to the outside, the temperature of the outside will inevitably affect the temperature of the feed liquid. Therefore, a heater 60 is provided to heat the feed liquid during the flow of the feed liquid so that the feed liquid can be kept at an optimal temperature. When the feed liquid is glass liquid, the optimal fluidity of the glass liquid can be guaranteed to improve the overflow efficiency. The heater 60 cooperates with the heat preservation cover 40 to stabilize the temperature of the glass liquid within a reasonable range, reduce the occurrence of cold spots, and further reduce the retained glass formed by the cold spots.

[0059] Please see Figures 1 to 3 In some embodiments, the heater 60 includes a plurality of burners 61 fixed on the heat preservation cover 40 and spaced apart from each other, and outlets of the burners 61 face the first channel 11 and the overflow channel 23 .

[0060] In this embodiment, when the material liquid is glass liquid, on the one hand, the flame heating method implemented by the burner 61 can increase the activity of the surface heterogeneous components of the glass liquid, accelerate the overflow discharge of the upper layer of the glass liquid, and ensure the stability of the components of the glass liquid. On the other hand, the temperature required for the glass liquid to meet sufficient fluidity is relatively high, and it is difficult for the ordinary heater 60 to make the glass liquid reach a high temperature in a short time. Therefore, the burner 61 is provided to heat the glass liquid by spraying flames, thereby increasing the heating efficiency. The outlet of the burner 61 is also directed toward the top wall of the second drainage block 30, so as to transfer heat to the glass liquid in the second channel 31 by heating the top wall of the second drainage block 30.

[0061] Specifically, the burners 61 are arranged in three groups, each group of burners 61 includes a plurality of burners 61 spaced apart from each other along the flow direction of the slurry, and the three groups of burners 61 correspond to the first channel 11, the overflow channel 23 and the second channel 31 respectively.

[0062] The disclosed embodiment further provides a glass production system, comprising a glass liquid conveying device and the above-mentioned overflow device, wherein the overflow device is arranged downstream of the glass liquid conveying device.

[0063] In this embodiment, the overflow device of the glass production system includes all the technical solutions and all the technical effects of the above-mentioned overflow device, which will not be repeated here.

[0064] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0065] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. An overflow device, characterized in that: include: a first channel (11), wherein the first channel (11) is configured to be able to flow a feed liquid; as well as An overflow assembly (20), the overflow assembly (20) comprising a driver (21), a plurality of overflow blocks (22) and an overflow channel (23) connected to the downstream of the first channel (11), at least two of the overflow blocks (22) being arranged opposite to each other so that the slurry overflows from both sides of the overflow channel (23) to the top surface of the overflow block (22), and the driver (21) can be controlled to drive the overflow block (22) to rise and fall so as to adjust the overflow height of the overflow channel (23).

2. The overflow device according to claim 1, characterized in that The top surface of the overflow block (22) is arranged to be inclined upward along the flow direction of the liquid; and / or, The overflow assembly (20) comprises a bottom plate (24), the overflow block (22) being slidably matched with the bottom plate (24), and at least two overflow blocks (22) being arranged on opposite sides of the bottom plate (24), and opposite surfaces of the overflow blocks (22) arranged opposite to each other and a top surface of the bottom plate (24) forming the overflow channel (23).

3. The overflow device according to claim 1, characterized in that: The overflow assembly (20) comprises a plurality of drivers (21) arranged below the overflow block (22), and at least two drivers (21) correspond to being arranged below the overflow block (22) on different sides.

4. The overflow device according to claim 1, characterized in that: The overflow device comprises a first drainage block (10), a groove is formed on the first drainage block (10), the groove forms the first channel (11), and the overflow block (22) is slidably matched with the first drainage block (10).

5. The overflow device according to claim 1, characterized in that: The overflow device further comprises a second channel (31) connected to the downstream of the overflow channel (23).

6. The overflow device according to claim 5, characterized in that The overflow device further comprises a second drainage block (30), a through opening is formed on the second drainage block (30), the through opening is formed as the second channel (31), and the overflow block (22) is slidably matched with the second drainage block (30).

7. The overflow device according to any one of claims 1 to 6, characterized in that The overflow device further comprises a heat-insulating cover (40) disposed above the first channel (11) and the overflow channel (23), an overflow gap being formed between the inner wall surface of the heat-insulating cover (40) and the side wall surface of the overflow block (22), so that the liquid overflowing to the top surface of the overflow block (22) can fall into the overflow gap.

8. The overflow device according to claim 7, characterized in that The overflow device further comprises a collecting container (50) connected to the overflow gap, wherein the collecting container (50) is configured to collect the liquid falling into the overflow gap; and / or, The overflow device further comprises a heater (60), wherein the heater (60) is used to heat the liquid in the first channel (11) and the overflow channel (23).

9. The overflow device according to claim 8, characterized in that The heater (60) comprises a plurality of burners (61) fixed on the heat-insulating cover (40) and arranged at intervals from each other, and outlets of the burners (61) face the first channel (11) and the overflow channel (23).

10. A glass production system, characterized in that: It comprises a glass liquid conveying device and an overflow device as described in any one of claims 1 to 9, wherein the overflow device is arranged downstream of the glass liquid conveying device.

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