Exhaust pipe, glass splicing component and vacuum glass

Abstract

This utility model relates to the field of vacuum glass technology, specifically disclosing an exhaust pipe, including a base with an exhaust channel hole for connecting to a vacuum chamber. A receiving groove is provided around the exhaust channel hole, within which a heat-melting sealing medium can be pre-placed. A sealing cap is elastically connected to the base, forming an exhaust gap with the receiving groove under normal conditions. Under pressure, the sealing cap covers the outlet end face of the exhaust channel hole and contacts the heat-melting sealing medium. A suction pipe is fixed to the base and coaxially connected to the exhaust channel hole. This technical solution achieves a seal by pushing the sealing cap to completely cover the outlet end face of the exhaust channel hole, while simultaneously heating to melt and permeate the sealing medium. After cooling and fixing, the sealing cap forms a seal on the exhaust channel hole. This design, through its heat-melting automatic sealing structure, effectively reduces the risk of gas backflow, improves sealing reliability, and reduces material consumption and processing costs, providing an efficient technical solution for vacuum glass production.

Description

Technical Field

[0001] This utility model relates to the field of vacuum glass structure technology, specifically to an exhaust pipe, a glass splicing component, and vacuum glass. Background Technology

[0002] Vacuum glass, as a new generation of energy-saving glass, demonstrates significant advantages in core indicators such as building energy conservation and sound insulation. Its thermal insulation performance is more than twice that of ordinary insulated glass, while effectively blocking urban traffic noise. Industry research reports indicate that the penetration rate of this technology in the field of ultra-low energy consumption buildings continues to increase, and it has become a key development direction for green building materials.

[0003] In existing vacuum glass manufacturing processes, the lack of built-in sealing components in the exhaust pipe presents a technical bottleneck during vacuum extraction: once the system reaches the target vacuum level, a step-by-step mechanical clamping and high-temperature sealing process must be implemented sequentially. This segmented sealing technology has the following main process defects: firstly, the exhaust pipe is highly susceptible to backflow during the clamping and sealing operation; secondly, the method of clamping first and then performing high-temperature sealing is not conducive to automating the vacuum glass sealing process.

[0004] This solution significantly reduces the probability of backflow and increases the yield rate through innovative exhaust pipe structure. Furthermore, it reduces equipment investment costs through automated processes, which is beneficial for the industrialization and market promotion of vacuum glass. Utility Model Content

[0005] To achieve the purpose of this utility model, this application provides an exhaust pipe, including: a base, a sealing cap, and an extraction pipe. The base has an exhaust channel hole for connecting to a vacuum chamber, and a receiving groove is provided around the exhaust channel hole. A thermoplastic sealing medium can be pre-placed in the receiving groove. The sealing cap is disposed within the receiving groove and is elastically connected to the base. Normally, it forms an exhaust gap with the receiving groove. Under pressure, the sealing cap covers the outlet end face of the exhaust channel hole and contacts the thermoplastic sealing medium. The extraction pipe is fixed to the base and coaxially connected to the exhaust channel hole. In use, the vacuum chamber is evacuated through the extraction pipe. After the vacuum level of the vacuum chamber reaches the required level, a pressing device integrating a heating component enters from the extraction pipe and presses down on the sealing cap, causing it to cover the outlet end face of the exhaust channel hole for sealing. Simultaneously, the sealing cap is heated to melt the thermoplastic sealing medium. After cooling, the sealing cap is fixed, forming a sealing barrier.

[0006] In some specific embodiments, the base is further provided with a mounting groove for installing the air extraction pipe, and the mounting groove is in communication with the receiving groove.

[0007] In some specific embodiments, the sealing cap includes:

[0008] The top cover and the annular sidewall are vertically fixed to the bottom edge of the top cover. The annular sidewall is located inside the receiving groove and can contact the thermoplastic sealing medium.

[0009] In some specific embodiments, the base has an annular getter groove at its bottom, which is coaxial with the exhaust channel hole, and the annular getter groove is used to place getter.

[0010] In some specific embodiments, the annular getter groove is further provided with a sealing component, and the sealing component and the inner and outer groove walls of the getter groove are respectively filled with a first sealing ring.

[0011] In some specific embodiments, the sealing cap is elastically connected to the base by a spring.

[0012] In some specific embodiments, the mounting groove and the exhaust pipe are filled with a second sealing ring.

[0013] In some specific embodiments, the heat-fusible sealing medium is solder.

[0014] This utility model also discloses a glass splicing component, including: a splicing piece formed by cutting a corner of a first glass plate;

[0015] The exhaust pipe mentioned above has its base mounted on the splicing component;

[0016] The splicing component has a through hole, which is connected to the exhaust channel.

[0017] This utility model also discloses a vacuum glass, comprising:

[0018] First glass plate and second glass plate;

[0019] As mentioned above, the splicing component is spliced ​​to the missing part of the first glass plate;

[0020] The second glass plate, after being spliced ​​together, is positioned opposite the first glass plate to form a vacuum glass.

[0021] The beneficial effects of the above technical solution are as follows:

[0022] 1. This solution employs a base-based core support structure with a central exhaust channel hole and a receiving groove containing a pre-filled thermoplastic sealing medium. A flexible sealing cap is installed at the top. The extraction pipe is fixedly connected to the base and communicates with the exhaust channel hole. When the vacuum level reaches the required standard, the sealing cap is pushed to completely cover the exhaust channel hole outlet face, while heating causes the sealing medium to melt and permeate. After cooling, the sealing cap forms a seal on the exhaust channel hole. This design, through its thermoplastic automatic sealing structure, effectively reduces the risk of backflow caused by heating, improves sealing reliability, facilitates the automation of vacuum glass sealing, and reduces material consumption and processing costs, providing an efficient technical solution for vacuum glass production.

[0023] 2. This solution employs an innovative modular prefabrication design for the glass splicing components, reconstructing the splicing area into independent functional modules. Combined with an intelligent sealing system for the exhaust pipe, this automates the vacuum sealing process. Its standardized interface structure is compatible with various glass substrate sizes, thicknesses, and coating process parameters, significantly simplifying the complexity of the main production line equipment and enabling seamless composite assembly with energy-saving components such as photovoltaic power generation layers and electrochromic color-changing films. Through the intensive transformation of the core process chain, this solution improves product yield and production line flexibility while significantly reducing manufacturing energy consumption and equipment maintenance costs, providing a replicable technological paradigm for the large-scale production of vacuum glass. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A cross-sectional view of an exhaust pipe provided for one embodiment of the present invention;

[0026] Figure 2 A cross-sectional view of another form of exhaust pipe provided for one embodiment of the present invention;

[0027] Figure 3 A cross-sectional view of an exhaust pipe and a drive assembly provided for one embodiment of the present invention;

[0028] Figure 4 A cross-sectional view of an exhaust pipe and drive assembly in another configuration according to one embodiment of the present invention;

[0029] Figure 5 A schematic diagram of the structure of an exhaust pipe and a drive assembly is provided for one embodiment of this utility model;

[0030] Figure 6 A cross-sectional view of another sealing component of a glass splicing component provided in one embodiment of the present utility model;

[0031] Figure 7 A schematic diagram of the structure of a glass splicing component provided in one embodiment of the present invention;

[0032] Figure 8 A cross-sectional view of a glass splicing component provided in one embodiment of the present utility model;

[0033] Figure 9 A cross-sectional view of a vacuum glass provided for one embodiment of the present invention.

[0034] Among them, 1. Glass splicing component; 10. Exhaust pipe; 101. Base; 102. Sealing cap; 103. Extraction pipe; 104. Push rod; 105. Heater; 106. Electromagnet; 107. Exhaust channel hole; 108. Receiving groove; 109. Getter groove; 110. Getter; 111. Sealing component; 112. First sealing ring; 113. Spring; 114. Second sealing ring; 115. Mounting groove; 116. Extraction head; 117. Sealing ring; 118. Solder; 11. Splicing piece; 2. First glass plate; 3. Second glass plate. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] Example 1:

[0038] This utility model embodiment provides an exhaust pipe, such as Figure 1As shown, the system includes: a base 101, a sealing cover 102, and a vacuum pipe 103. The base 101 has an exhaust channel hole 107 connecting to a vacuum chamber. A receiving groove 108 is provided around the exhaust channel hole 107, and a thermoplastic sealing medium is pre-placed in the groove. The sealing cover 102 is elastically connected to the base 101, forming an exhaust gap with the receiving groove 108 under normal conditions. When pressed, the sealing cover 102 completely covers the outlet end face of the exhaust channel hole 107 and comes into contact with the thermoplastic sealing medium. The vacuum pipe 103 is fixed to the base 101 and can be made of different materials such as metal or glass. The vacuum pipe 103 is coaxially connected to the exhaust channel hole 107. When the vacuum level of the vacuum chamber reaches the required standard, the sealing cover 102 is pushed to completely cover the outlet end face of the exhaust channel hole 107. Simultaneously, the sealing cover 102 is heated to melt and permeate the sealing medium. After cooling, the sealing cover 102 is fixed, thus sealing the exhaust channel hole 107. This design, through its heat-sealing automatic sealing structure, effectively reduces the risk of gas release and backflow caused by heating, thereby improving the yield rate.

[0039] In another embodiment, such as Figure 2 As shown, after sealing the exhaust channel hole 107, the excess part of the extractor tube 103 can be clamped off and removed.

[0040] The core component base 101 in this embodiment adopts a Kovar alloy integrated molding structure, with a mounting groove 115, a receiving groove 108, and an exhaust channel hole 107 sequentially arranged from top to bottom. The mounting groove 115 adopts a composite conical design, with the cone shape inverted during the assembly process to ensure that the solder 114 can better melt and flow to the joint area requiring sealing. The top vertical guide section forms a contact fit with the side wall of the extraction pipe 103 to ensure vertical positioning to the stepped boss, which serves as the positioning reference surface for the end of the extraction pipe 103. The receiving groove 108 is an annular groove with an exhaust channel hole 107 coaxially arranged in its center, forming a coordinated exhaust system of the annular cavity and the central column. This multi-stage cavity structure is connected through gradient transitions, ensuring assembly accuracy while achieving continuous sealing interfaces, effectively improving the sealing reliability and exhaust efficiency of the vacuum cavity.

[0041] This embodiment further optimizes the sealing structure based on the existing technical solution: the hot-melt sealing medium in the accommodating groove 108 is selected from the solder 118 with a melting point of 500℃. After curing, this material has high-temperature creep resistance characteristics; the sealing cover 102 is composed of a top cover and an annular sidewall, wherein the annular sidewall is vertically fixed to the bottom edge of the top cover to form a cup-shaped structure; when the sealing cover 102 is pressed down, the bottom of its annular sidewall abuts against the bottom surface of the groove and contacts the solder 118, and the top cover simultaneously closes the exhaust channel hole 107; the elastic connection is achieved by the spring 113 - one end of the spring 113 is fixed to the protrusion inside the exhaust channel hole 107, and the other end is connected to the upper part of the top cover, maintaining a controllable gap between the sealing cover 102 and the base 101 under normal conditions.

[0042] The driving component specifically described in this embodiment is an auxiliary actuator (not within the scope of the claims), and its technical parameters and structural features are only used to verify the feasibility of implementing the technical solution of this utility model. Figure 3 , Figure 4 and Figure 5 As shown, it includes a push rod 104, a heater 10, and a suction head 116. The push rod 104 is a magnetic push rod and is located inside the suction head 116. The heater 105 is installed at the inner end of the push rod 104. An electromagnet 106 is sleeved on the outer wall of the suction head 116 to form a magnetic drive assembly.

[0043] The sealing process is as follows: When the vacuum level meets the standard, the drive assembly is inserted into the exhaust pipe. Specifically, the push rod 104 is located inside the suction pipe 103, and the suction pipe 103 is located between the suction head 116 and the push rod 104. The end of the inner wall of the suction head 103 is also provided with a sealing ring 117 to enhance airtightness. The electromagnet 106 drives the magnetic push rod 104 to press the sealing cover 102. At this time, the heater 105 heats the solder 118 in the receiving groove 108. The solder 118 flows into the gap between the sealing cover 102 and the receiving groove 108, thereby achieving the sealing of the exhaust pipe. After sealing, the excess part of the suction pipe 103 is removed.

[0044] It is evident that by integrating the exhaust channel and pre-sealed structure into the modular base 101, combined with the linkage mechanism of the magnetic push rod 104, the following advantages are achieved: ① After the solder 118 cools, it forms a high-strength metallurgical bonding interface, significantly reducing the backflow rate; ② The electromagnetic drive and gradient heating are precisely matched, reducing material consumption and processing costs; ③ The flexible connection and magnetic drive have strong adaptability, which is suitable for the industrial production needs of vacuum glass.

[0045] This embodiment also involves an integrated intelligent control module: the drive assembly is equipped with a sensor to monitor the vacuum state of the cavity in real time; after receiving the sensor signal, the control system triggers the electromagnet 106 to drive the push rod 104 downward when the vacuum level is detected to meet the standard, causing the electric heater 105 at the inner end of the push rod 104 to press the sealing cover 102 and start the gradient heating program, precisely melting the 500℃ melting point solder 118 pre-placed in the annular groove at the bottom of the sealing cover 102, thus achieving fully automatic closed-loop sealing control. It should be noted that the specific control logic of this intelligent control module is not considered an essential technical feature of this utility model, but is only used to verify the process adaptability and engineering feasibility of the sealing structure of this patent in industrial production.

[0046] By integrating sensors to monitor target parameters in real time, when a preset threshold (vacuum level meets the standard) is detected, the control system automatically sends an energizing command to the electromagnet 106, generating a magnetic field to drive the push rod 104 to press down.

[0047] It should be noted that the system consisting of the intelligent control module and the drive components is one of the various implementations of the pressure-down sealing cover 102. Its function is to precisely control the displacement accuracy and pressure distribution uniformity of the sealing cover 102 through a closed-loop feedback mechanism. This module controls the mechanical transmission mechanism to form a linkage with the sealing cover, and can automatically trigger a linear pressure-down action when the vacuum level reaches the standard. Those skilled in the art can flexibly select the appropriate pressure-down drive method based on the production line configuration and process parameters.

[0048] In a preferred embodiment of this utility model, such as Figures 1 to 4 As shown, the base 101 has an annular getter groove 109 coaxial with the exhaust channel hole 107 at its bottom, which contains an annular Zr-V-Fe non-evaporable getter 110 (activation condition: constant temperature at 500℃ for 5 minutes). The groove opening is covered by a sealing component 111, which is an annular sealing plate with a semi-circular cross-section. Ag-Cu28 copper-silver solder wire (melting temperature 730℃-820℃) is filled between the annular sealing plate and the side wall of the groove as a first sealing ring 112, which is also annular. Generally, there are two first sealing rings 112, located on both sides of the sealing plate. The solder wire is melted by heating, and the sealing plate is permanently fixed to the side wall of the groove after cooling. In the assembly process optimization scheme, the getter groove 109 and the vacuum glass cavity are connected at the nanoscale through laser microchannel processing technology. The getter 110 can effectively maintain the stability of the cavity vacuum and simultaneously improve the product durability.

[0049] In another embodiment of this utility model, such as Figure 6 As shown: Another sealing component 111 and sealing method are provided. Specifically, a boss is provided inside the getter groove 109, the sealing component 111 is located at the bottom of the getter groove 109, and a first sealing ring 112 is provided between the sealing component 111 and the boss. The sealing component 111 is a circular sealing sheet.

[0050] In a preferred embodiment of this invention, when the extraction pipe 103 is installed inside the mounting groove 115, a gap remains between it and the tapered section of the mounting groove 115. This gap is filled with a second sealing ring 114 made of welding wire of the same material as the first sealing ring 112. In different embodiments, the material of the second sealing ring 114 filling the gap can be determined according to the materials of the extraction pipe 103 and the base 101.

[0051] Example 2:

[0052] One embodiment of this utility model provides a glass splicing component 1, such as... Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, it includes: a splicing component 11 formed by cutting a corner of the first glass plate 2 and an exhaust pipe 10 as proposed in the above embodiment, with its base 101 mounted on the splicing component 11; the splicing component 11 is provided with a through hole, which is connected to the exhaust channel.

[0053] Specifically, the L-shaped splice 11 formed by cutting from the corner of the first glass plate 2 using laser precision cutting technology, and the vacuum exhaust pipe 10 assembly assembled on the cut surface of the splice 11—the base 101—are fixed to the surface of the splice 11 by a low-stress laser welding process. The cut surface of the splice 11 is pre-machined with a through hole that is coaxially connected to the exhaust channel hole 107 of the exhaust pipe 10, so as to realize efficient communication between the vacuum chamber and the external pumping equipment.

[0054] In another embodiment of this utility model, such as Figure 8 As shown: the getter slot 109 is set on the splice 11, and the getter 13 is sealed in the assembly slot 114 by the sealing piece 14.

[0055] In a preferred embodiment of this utility model, the glass splicing components can also be manufactured separately, which is suitable for the production of vacuum glass of various sizes, thicknesses and processes.

[0056] This technical solution innovates the prefabricated modular process for glass splicing components, reconstructing the 11 areas of the splicing piece into independent functional modules and integrating an exhaust unit with an intelligent closed-loop sealing mechanism to achieve a fully automated vacuum sealing process. Its standardized adapter interface design supports rapid matching of various substrate specifications (size / thickness / coating parameters), reducing the complexity of main production line equipment configuration while also enabling integrated integration with energy-saving functional layers such as photovoltaic power generation and intelligent dimming. Through the intensive integration of core manufacturing processes, this solution simultaneously improves product yield and optimizes production line flexibility, while significantly reducing production energy consumption and equipment maintenance costs, thus constructing a replicable industrialization path for the vacuum glass industry.

[0057] Example 3:

[0058] One embodiment of this utility model provides a vacuum glass, such as... Figures 1 to 9As shown, the system includes a first glass plate 2, a second glass plate 3, and a glass splicing component 1 as described in the above embodiment. The first glass plate 2 and the second glass plate 3 are arranged opposite each other, forming a uniform gap between them. Supports arranged in an array are placed within the gap. The edges of the glass plates are sealed with solder, but the notch area of ​​the first glass plate 2 and the corresponding position of the second glass plate 3 remain unsealed. After the glass splicing component 1 is precisely embedded into the notch, it is welded to the notch edge of the first glass plate 2 and the corresponding edge of the second glass plate 3 using solder, thereby forming a sealed cavity. This cavity is connected to the outside through an exhaust pipe 10. After a predetermined vacuum level is reached through vacuuming, the exhaust pipe 10 achieves self-sealing through methods such as heat fusion, ultimately forming vacuum glass.

[0059] The specific manufacturing process of the vacuum glass provided in this embodiment is as follows:

[0060] First, the basic processing of glass splicing component 1 is carried out. Glass splicing component 1 is prepared using laser / mechanical processing technology, while the base component 101 is precision machined using a CNC machine tool. The matching annular sealing component 111 and sealing cap 102 are formed by cutting and stamping, while the vent pipe 103 is made of Kovar alloy or stainless steel and cut to size. The spring component 113 is made of stainless steel wire. All metal components undergo ultrasonic cleaning and high-temperature wet hydrogen treatment to form an oxide film and improve welding quality.

[0061] In the assembly stage, a step-by-step welding process is adopted. After the Zr-V-Fe non-evaporable getter 110 is placed into the annular getter groove 109 of the base 101, the annular sealing component 111 and the first sealing ring 112 are assembled in sequence, and the second sealing ring 114 and the extraction pipe 103 are installed on the top of the base 101. High-temperature welding of 730-820℃ is completed in a vacuum brazing furnace at 1Pa, which realizes the activation of the getter 110 and its encapsulation and sealing with the extraction pipe 103. Subsequently, the exhaust pipe 10 and the glass splice 11 are welded using 500℃ low-melting-point solder, and after annealing, a complete splice component is formed. In another embodiment, in order to optimize the process, a "one-step" welding method can also be achieved by uniformly using 500℃ solder, combining the two brazing processes into a single process (i.e., the sealing component 111, the extraction pipe 103, and the glass splice 11 are welded simultaneously).

[0062] Finally, the vacuum glass is integrated and assembled. The splicing components are laser-welded to the missing corner of the first glass plate 2, and after the supports are placed, they are combined with the second glass plate 3. Low-temperature glass solder at 380-400℃ is applied to the glass edges and the joints of the splicing components. Simultaneously, low-melting-point solder 118 is pre-placed in the receiving groove 108 of the base 101, and the spring 113 and sealing cap 102 assembly are installed. When the vacuum level of the vacuum glass is detected to be up to standard, the magnetic drive assembly controls the electromagnet 106 to drive the magnetic push rod 104 to press the sealing cap 102, and the heater 105 melts the solder 118 to achieve vacuum sealing. After sealing, the evacuation pipe 103 can be partially removed, so that the height of the splicing components is level with the first glass plate 2, completing the vacuum glass manufacturing process. The entire process adopts a graded temperature control system to ensure reliable sealing at the interfaces of different materials.

[0063] Therefore, this solution innovatively employs a local topological reconstruction process for the vacuum glass structure. Precision laser cutting technology is used to selectively remove areas of the first glass plate 2, creating customized splicing points. Combined with gradient annealing, the splicing component 11 is laser-welded and hermetically sealed to the substrate. Simultaneously, a perimeter fusion-sealing integrated molding technology achieves molecular-level densification of the edges of the first and second glass plates 3. This modular reconstruction method, through the separate manufacturing and precise composite of the core functional area and non-load-bearing area, maintains the integrity of the vacuum cavity and surface cleanliness control while significantly improving process efficiency and product yield. Its process compatibility breaks through traditional size and structural limitations, achieving traceless glass surface treatment through micron-level flatness control, providing an innovative solution for upgrading vacuum glass product performance and flexibly transforming production lines.

[0064] In the description of this specification, the references to terms such as "an embodiment," "some embodiments," "example," "specific example," "a specific embodiment," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An exhaust pipe, characterized in that, include: The base (101) is provided with an exhaust channel hole (107) for connecting to the vacuum chamber. The exhaust channel hole (107) is surrounded by a receiving groove (108), and a hot melt sealing medium can be pre-placed in the receiving groove (108). The sealing cap (102) is elastically connected to the base (101). Under normal conditions, it forms an exhaust gap with the receiving groove (108). When under pressure, the sealing cap (102) can cover the outlet end face of the exhaust channel hole (107) and come into contact with the hot melt sealing medium. The exhaust pipe (103) is fixed on the base (101) and is coaxially connected to the exhaust channel hole (107).

2. The exhaust pipe according to claim 1, characterized in that, The base (101) is also provided with a mounting groove (115) for installing the air extraction pipe (103).

3. The exhaust pipe according to claim 1, characterized in that, The sealing cap (102) includes: The top cover and the annular sidewall are vertically fixed to the bottom edge of the top cover. The annular sidewall is located inside the receiving groove (108) and can contact the thermoplastic sealing medium.

4. The exhaust pipe according to claim 1, characterized in that, The base (101) has an annular getter groove (109) at the bottom, which is coaxial with the exhaust channel hole (107). The annular getter groove (109) is used to place getter (110).

5. The exhaust pipe according to claim 4, characterized in that, The annular getter groove (109) is also provided with a sealing component (111), and a first sealing ring (112) is filled between the sealing component (111) and the inner and outer groove walls of the getter groove (109).

6. The exhaust pipe according to claim 1, characterized in that, The sealing cap (102) is elastically connected to the base (101) by a spring (113).

7. The exhaust pipe according to claim 2, characterized in that, The mounting groove (115) and the air extraction pipe (103) are filled with a second sealing ring (114).

8. The exhaust pipe according to claim 1, characterized in that, The heat-fusible sealing medium is solder (118).

9. A glass splicing component, characterized in that, include: A splicing piece (11) formed by cutting a corner of the first glass plate (2); The exhaust pipe as described in any one of claims 1 to 8 has its base (101) mounted on the splice (11).

10. A vacuum glass, characterized in that, include: First glass plate (2) and second glass plate (3); The glass splicing component (1) as described in claim 9 is spliced ​​with the missing part of the first glass plate (2); The second glass plate (3) after splicing is arranged opposite to the first glass plate (2) to form a vacuum glass.

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