A multi-path container compatible vacuum seal cap

Abstract

The utility model discloses a kind of multi-diameter container compatible vacuum sealing cover, it is related to sealing cover technical field, including the sealing assembly for forming sealing to different caliber container;The sealing assembly includes: end face sealing element, radial sealing along and compensation part.By the cooperation of end face sealing element, radial sealing along and compensation part, to match the caliber difference in different containers, when the inner wall of container port is not in contact with the outer wall of radial sealing along, the compensation part arranged on radial sealing along will be in contact with the outer wall of container port, the bending deformation of compensation part towards end face sealing element occurs, the radial clearance existing between radial sealing along and the outer wall of container port can be filled by the elastic deformation of compensation part, to facilitate the radial sealing of container port outer wall by compensation part, whereby sealing cover can be directly used in existing different caliber container, without matching matched storage container, can be directly vacuum fresh-keeping, expansibility is strong, adaptive capacity is high, very convenient.

Description

Technical Field

[0001] This utility model relates to the field of sealing cap technology, specifically to a vacuum sealing cap compatible with multi-diameter containers. Background Technology

[0002] As the food industry and households increasingly demand freshness and safety from ingredients, food preservation technology has evolved from traditional methods like refrigeration and pickling to more efficient and longer-lasting precision preservation. Vacuum preservation, with its core advantages of isolating oxygen, inhibiting microbial growth, and delaying food oxidation and spoilage, has become one of the mainstream preservation technologies. Vacuum containers, such as vacuum food storage boxes, serve as important carriers of vacuum preservation technology and are widely used due to their portability, reusability, and adaptability to different food shapes.

[0003] For vacuum-sealed food containers, their core preservation efficiency depends entirely on whether the container can maintain a stable high vacuum environment. If the vacuum level is insufficient or the seal fails, outside air will seep back into the container, accelerating the oxidation of food, promoting the growth of microorganisms, and ultimately causing the container to lose its preservation effect. The sealing lid is the core component that determines the airtightness of the vacuum-sealed food container. It must fit tightly against the container's opening during the vacuuming process to ensure that air is completely extracted without leakage, and it must also maintain its sealing performance under vacuum for a long time to resist the pressure of external air on the lid and prevent air from seeping back in.

[0004] However, the current mainstream vacuum food storage containers generally have the limitation of "one-to-one compatibility" in their sealing lid design. That is, they adopt the design mode of "integrated binding of box body and sealing lid". Each size and model of food storage box or jar can only be used with a dedicated sealing lid. The size of the sealing lid is strictly matched with the corresponding container and cannot be used with other sizes of containers. Its expandability and adaptability are poor, causing a lot of inconvenience to users. Utility Model Content

[0005] The purpose of this invention is to provide a vacuum sealing cap compatible with multi-diameter containers, in order to solve the technical problem that most existing sealing caps can only be used with matching vacuum preservation containers, resulting in poor expandability and weak adaptability.

[0006] To achieve the above objectives, this utility model proposes a vacuum sealing cap compatible with multi-diameter containers, the vacuum sealing cap including a sealing component and a support component for forming a seal for containers of different diameters;

[0007] The sealing assembly includes: an end face seal, a radial sealing edge, and a compensation portion;

[0008] The end face seal is disposed on the inner surface of the support assembly and is used to form an axial seal for the ports of containers of different diameters;

[0009] The radial sealing edge is provided in multiple sets, one end of which is connected to one end face of the end face seal, for forming a radial seal on the port of containers of different diameters, and the multiple sets of radial sealing edges maintain a predetermined distance.

[0010] The compensation part is disposed on the side wall at the other end of the radial sealing edge, and the compensation part is used to compensate for the gap between the radial sealing edge and the port of the container of different diameters during sealing.

[0011] Preferably, the compensation part is vertically disposed on the side wall of the radial sealing edge.

[0012] Preferably, the thickness of the compensation portion gradually decreases from one end near the radial seal along the sidewall to the other end.

[0013] Preferably, the sealing assembly further includes an outer edge covering portion;

[0014] The outer edge covering portion is disposed on the outer edge of the other end face of the end face seal, and is used to cover the outer periphery of the support component.

[0015] Preferably, the support assembly is provided with a lower support edge and an exhaust groove, the lower support edge being located at the edge of the exhaust groove and facing the side where the end face seal is located.

[0016] Preferably, the sealing assembly further includes a positioning lower edge;

[0017] The positioning lower edge is disposed on one end face of the end face seal and fits against the outer surface of the supporting lower edge, and the positioning lower edge maintains a predetermined distance from the radial sealing edge.

[0018] Preferably, the sealing assembly further includes a fitting portion and a reserved groove;

[0019] The fitting part is disposed on the other end face of the end face seal and is recessed to one side of the end face seal. The fitting part cooperates with the outer edge covering part to form a locking with the support assembly.

[0020] The reserved groove is opened through the central area of ​​the end face seal and is used to communicate with the exhaust groove. The reserved groove is distributed close to the lower edge of the positioning.

[0021] Preferably, the support assembly includes a support plate and a sealing lip;

[0022] The inner surface of the support plate is provided with the lower support edge, and the vent groove is provided in the center of the support plate;

[0023] The sealing lip is disposed on the inner surface of the support plate and is used to form a multiple seal with the end face seal.

[0024] Preferably, the vacuum-sealed cover further includes an airtight component;

[0025] The airtight component includes a sealing plug;

[0026] The sealing plug is detachably disposed inside the exhaust groove, and the outer diameter of the sealing plug gradually increases from one end near the end face seal to the other end, and the maximum outer diameter of the sealing plug is equal to the inner diameter of the exhaust groove.

[0027] Preferably, the airtight component further includes a first limiting member and a second limiting member;

[0028] One end of the limiting member is connected to one end of the sealing plug near the end face seal, and the other end of the limiting member is inclined toward the end face seal.

[0029] The second limiting member is disposed at the end of the sealing plug away from the end face sealing member, and a certain gap is reserved between the second limiting member and the first limiting member;

[0030] The gap between the first limiting member and the second limiting member is less than the thickness of the support plate.

[0031] Compared with the prior art, this utility model has at least the following beneficial effects:

[0032] This invention utilizes the cooperation of an end-face seal, a radial sealing edge, and a compensation part to match the diameter differences in different containers. When the inner wall of the container port does not contact the outer wall of the radial sealing edge, the compensation part provided on the radial sealing edge will contact the outer wall of the container port. The compensation part undergoes bending deformation toward the end-face seal. Through the elastic deformation of the compensation part, the radial gap between the radial sealing edge and the outer wall of the container port can be filled, thereby forming a radial seal on the outer wall of the container port using the compensation part. As a result, the sealing cap can be directly used for existing containers of different diameters without the need for matching storage containers, enabling direct vacuum preservation. It has strong scalability, high adaptability, and is very convenient. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] Figure 1 This is a cross-sectional schematic diagram of the sealing component, support component and airtight component in this utility model;

[0035] Figure 2 This is a schematic diagram of the cooperation between the sealing component and the support component in this utility model;

[0036] Figure 3 This is a schematic diagram of the cooperation between the limiting component and the end face sealing component in this utility model;

[0037] Figure 4 This is a three-dimensional schematic diagram of the sealing component in this utility model;

[0038] Figure 5 This is a three-dimensional schematic diagram of the support component in this utility model;

[0039] Figure 6 This is a three-dimensional schematic diagram of the airtight component in this utility model.

[0040] In the diagram: 1. End face seal; 2. Radial sealing edge; 3. Compensation part; 4. Positioning lower edge; 5. Outer edge covering part; 6. Fitting part; 7. Reserved groove; 8. Lifting part; 9. Support plate; 10. Support lower edge; 11. Sealing lip; 12. Vent groove; 13. Date mark; 14. Sealing plug; 15. Limiting part one; 16. Limiting part two. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] The preferred embodiments described below are merely examples, and other obvious variations will be apparent to those skilled in the art. The basic principles of this invention as defined in the following description can be applied to other implementations, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this invention.

[0043] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0044] like Figures 1 to 6As shown, this embodiment proposes a vacuum sealing cap compatible with multi-diameter containers. The vacuum sealing cap in this embodiment is used in conjunction with a cylindrical container. For containers with different diameters and shapes, vacuum sealing caps of different specifications and models can be used.

[0045] In this embodiment, the vacuum sealing cap includes a sealing component and a support component for forming a seal for containers of different diameters. The sealing component is the core component that directly contacts the vacuum sealing cap and the container, and is used to form a covering seal on the opening end of the container, undertaking the functions of axial sealing, radial sealing and gap compensation.

[0046] The sealing assembly includes: an end face seal 1, a radial sealing edge 2, and a compensation part 3.

[0047] Specifically, the end face seal 1 is disposed on the inner surface of the support assembly to form an axial seal on the ports of containers of different diameters. The end face seal 1 provides support for the radial sealing line 2. The end face seal 1 is the basic support structure of the sealing assembly. In this embodiment, the end face seal 1 is made of food-grade silicone, which has good elasticity, high and low temperature resistance, and aging resistance, making it suitable for food storage, laboratory sample preservation, and other scenarios. The surface of the end face seal 1 can contact the port of the container, thereby forming an axial seal. When the sealing cap is closed on the container port, the side of the end face seal 1 closest to the container is tightly fitted with the end face of the container port. The elastic deformation generated by compression blocks the axial airflow channel inside and outside the container, forming the first line of sealing defense.

[0048] Furthermore, the end face seal 1 provides an installation reference for the radial sealing edge 2, the lower positioning edge 4, and the outer edge covering part 5, thereby ensuring that each component is accurately distributed on the same reference plane and avoiding seal failure due to misalignment during installation. At the same time, the elastic properties of the end face seal 1 can buffer the impact force during closing, protecting the container port from damage and adapting to minor unevenness of the container end face through deformation, thus improving seal compatibility.

[0049] In this embodiment, multiple sets of radial sealing edges 2 are provided, one end of which is connected to one end face of the end face seal 1 to form a radial seal for the ports of containers of different diameters. A predetermined distance is maintained between the multiple sets of radial sealing edges 2. The compensation part 3 is provided on the side wall of the other end of the radial sealing edge 2. The compensation part 3 is used to compensate for the gap between the radial sealing edge 2 and the ports of containers of different diameters during sealing. The compensation part 3 is vertically provided on the side wall of the radial sealing edge 2, and the thickness of the compensation part 3 gradually decreases from one end close to the side wall of the radial sealing edge 2 to the other end, forming a pointed protrusion structure to facilitate extrusion and to facilitate compensation for the gap between the radial sealing edge 2 and the ports of containers of different diameters during sealing.

[0050] In this embodiment, the radial sealing edge 2 protrudes from one end face of the end face seal 1, and its shape matches the shape of the container port to be sealed. In this embodiment, the radial sealing edge 2 is integrally formed with the end face seal 1, which has good elasticity and wear resistance, and can also avoid the risk of the radial sealing edge 2 falling off, thus extending the service life of the sealing assembly.

[0051] Furthermore, in this embodiment, a total of 3 sets of radial sealing edges 2 are provided, and their number can be adjusted according to actual needs to match the diameter difference in different containers. The predetermined distance maintained between two adjacent sets of radial sealing edges 2 can avoid mutual interference between adjacent sealing edges during extrusion deformation, and at the same time reserve adaptation space for the wall thickness of the container port. When the inner wall of the container port does not contact the outer wall of the radial sealing edge 2, the container port will be in the predetermined distance. At this time, the compensation part 3 provided on the radial sealing edge 2 will contact the outer wall of the container port. The compensation part 3 undergoes bending deformation toward the end face seal 1. The elastic deformation of the compensation part 3 can fill the radial gap between the radial sealing edge 2 and the outer wall of the container port, thereby forming a radial seal on the outer wall of the container port using the compensation part 3. The compensation part 3 and the radial sealing edge 2 are also integrally formed, and the material is also food-grade silicone.

[0052] In this embodiment, the thickness of the compensation part 3 gradually decreases from one side near the radial sealing edge 2 to the other side, forming a "wedge" cross-section. Therefore, when bending deformation occurs, the compensation part 3 can deform to different degrees according to the size of the gap between the radial sealing edge 2 and the outer wall of the container port to match it. Furthermore, due to the differences in manufacturing precision of different containers, there may be slight unevenness or taper deviation on the outer wall of the container. Through the "flexible filling" characteristic of the wedge structure of the compensation part 3, when the radial sealing edge 2 is in contact with the inner wall of the container, the thin edge of the compensation part 3 can fit into the small depressions of the outer wall through slight deformation, while the thick edge provides support for the thin edge. This ensures that the compensation part 3 is fully in contact with the outer wall, further extending the permeation path of the airflow inside and outside the container and improving the vacuum sealing effect.

[0053] In this embodiment, the sealing diameter range formed by the radial sealing edge 2 and the compensation part 3 can cover 90% of cylindrical containers in the market, solving the limitation of one cap and one diameter when using traditional sealing caps.

[0054] In this embodiment, the sealing assembly further includes: a positioning lower edge 4, an outer edge covering part 5, an interlocking part 6, and a reserved groove 7.

[0055] Specifically, the positioning lower edge 4 is set on one side end face of the end face seal 1, maintaining a predetermined distance from the radial sealing edge 2, and is in contact with the outer surface of the support lower edge 10. The positioning lower edge 4 is located inside the innermost radial sealing edge 2, and its material is the same as that of the end face seal 1. During operation, the inner wall of the positioning lower edge 4 is in contact with the support lower edge 10 in the support assembly, and the two form a radial seal, which can prevent gas from entering the container from the gap between the sealing assembly and the support assembly, thereby ensuring the sealing performance of the cover.

[0056] Specifically, in this embodiment, the outer edge covering part 5 is disposed on the outer edge of the other end face of the end face seal 1 to cover the outer periphery of the support component. The outer edge covering part 5 is also integrally formed with the end face seal 1, and its inner wall has a smooth arc transition, which can cover and limit the outer periphery of the support component. When the support component and the sealing component are assembled, the outer periphery of the support plate 9 of the support component can be embedded in the inner side of the outer edge covering part 5. The inner wall of the outer edge covering part 5 is in close contact with the outer periphery of the support plate 9, which not only restricts the horizontal displacement of the support plate 9, but also avoids the formation of gaps between the support component and the sealing component, preventing gas from penetrating from the gap between their outer peripheries.

[0057] Meanwhile, the annular structure of the outer edge covering part 5 can enhance the structural strength of the edge of the end face seal 1, and prevent the end face seal 1 from failing due to excessive edge deformation.

[0058] Specifically, the fitting part 6 is disposed on the other end face of the end face seal 1 and is recessed to one side of the end face seal 1. The fitting part 6 cooperates with the outer edge covering part 5 to form a locking with the support assembly. The fitting part 6 matches the support plate 9 in the support assembly. When the support assembly is installed, the lower surface of the support plate 9 can be embedded in the recessed area of ​​the fitting part 6. The inner wall of the fitting part 6 is in close contact with the inner side wall of the support plate 9, ensuring that the relative position of the support assembly and the sealing assembly is fixed, avoiding misalignment due to vibration, and also increasing the contact area between the support assembly and the sealing assembly, improving the sealing performance between them, and preventing airflow from penetrating through the contact gap.

[0059] In addition, the recessed depth design of the fitting part 6 ensures that the support plate 9 does not protrude from the upper surface of the end face seal 1 after being inserted, making the overall structure of the sealing cover flat and easy to store and stack.

[0060] Specifically, the reserved groove 7 is opened through the central area of ​​the end face seal 1. The reserved groove 7 is distributed close to the lower edge 4 of the positioning. Since the central area of ​​the end face seal 1 does not bear the sealing function, it is hollowed out to form the reserved groove 7, which reduces the production cost and also facilitates the connection of the exhaust groove 12 to the inside of the container.

[0061] In this embodiment, specifically, the outer surface of the outer edge covering part 5 is provided with a lifting part 8. The lifting part 8 provides a convenient force application point for opening the sealing cap. Due to the pressure difference between the inside and outside of the container under vacuum sealing, the sealing cap fits tightly with the container. The design of the lifting part 8 makes it convenient for users to overcome the pressure difference resistance and open the sealing cap. Anti-slip textures can also be provided on the lifting part 8 to increase friction with the hand.

[0062] In this embodiment, the vacuum sealing cover also includes a support component for supporting the sealing assembly, providing structural support for the sealing assembly and preventing excessive deformation of the sealing assembly. The support component includes a support plate 9 and an exhaust groove 12.

[0063] Specifically, the support plate 9 is fitted onto the fitting part 6, and the outer periphery of the support plate 9 is in contact with the inner wall of the outer edge covering part 5. The exhaust groove 12 is opened through the support plate 9 for installing the airtight component. The support plate 9 is the core structure of the support component. In this embodiment, food-grade PP material is preferably used, which has high strength, impact resistance, and high temperature resistance. It can withstand high temperature sterilization of 121°C and is suitable for laboratory, medical and other scenarios. The outer diameter of the support plate 9 is equal to the inner diameter of the outer edge covering part 5. The support plate 9 can provide rigid support for the sealing component, ensuring that the sealing component will not be excessively deformed due to uneven force during use, and also avoiding excessive deformation of the sealing component during the closing or vacuuming process.

[0064] It should be noted that in this embodiment, the support plate 9 can be directly bonded and fixed to the end face seal 1.

[0065] Furthermore, the exhaust groove 12 on the support plate 9 provides an installation reference for the airtight component. The exhaust groove 12 can accurately position the sealing plug 14 in the airtight component, ensuring that the sealing plug 14 is coaxial with the reserved groove 7, and avoiding airtightness failure due to misalignment during installation.

[0066] Furthermore, the exhaust groove 12 provides installation space and gas passage for the airtight component. An annular step can be opened inside the exhaust groove 12. When the sealing plug 14 of the airtight component is embedded in the exhaust groove 12, the annular step can limit the sealing plug 14, preventing the sealing plug 14 from being over-inserted into the exhaust groove 12 and becoming impossible to remove. At the same time, it ensures that the sealing plug 14 and the exhaust groove 12 are fixed in place, improving the sealing reliability. The seal is achieved by fitting against the inner wall of the exhaust groove 12. Meanwhile, the exhaust groove 12 can connect the inside of the container with the external vacuum equipment. During vacuuming, the gas in the container enters the vacuum equipment through the exhaust groove 12 in sequence. After the vacuuming is completed, the sealing plug 14 can seal the exhaust groove 12 to maintain the vacuum state inside the container.

[0067] In this embodiment, a support lower edge 10 and a sealing lip 11 are provided on the end face of the support plate 9 near the fitting part 6. The support lower edge 10 is located at the edge of the exhaust groove 12 and faces the side with the end face seal 1. The support lower edge 10 is used to support the positioning lower edge 4 in the reserved groove 7. In this embodiment, it is preferable that the support lower edge 10 and the support plate 9 are integrally formed. The outer diameter of the support lower edge 10 is equal to the inner diameter of the reserved groove 7. The support lower edge 10 provides support and sealing for the positioning lower edge 4 and the reserved groove 7. When the support assembly and the sealing assembly are assembled, the support lower edge 10 can be embedded in the inner side of the reserved groove 7. The outer side wall of the support lower edge 10 is in close contact with the inner side wall of the reserved groove 7 to form a seal on the reserved groove 7 and prevent airflow from penetrating from the gap between them.

[0068] The sealing lip 11 can fit tightly with the end face seal 1 to form a multiple seal, preventing air from entering the container from the mating surface of the support plate 9 and the fitting part 6.

[0069] In this embodiment, the vacuum sealing cover also includes an airtight component, which is a key component for controlling the exhaust and sealing of the sealing cover. It is responsible for the gas conduction during vacuuming, the sealing and plugging after vacuuming, and date indication.

[0070] The airtight component includes a sealing plug 14, which is detachably disposed inside the exhaust groove 12. The outer diameter of the sealing plug 14 gradually increases from one end near the end face seal 1 to the other end. The maximum outer diameter of the sealing plug 14 is equal to the inner diameter of the exhaust groove 12. The sealing plug 14 is the core sealing structure of the airtight component. It is made of food-grade nitrile rubber and has excellent airtightness, oil resistance, and aging resistance. It can be used in a temperature range of -40℃ to 120℃ and is suitable for various storage scenarios. The sealing plug 14 has an overall conical structure and is used to control the opening and closing of the exhaust groove 12. When vacuuming is required, the sealing plug 14 can be pulled up a bit to form a gap between the sealing plug 14 and the exhaust groove 12. Then, the container can be vacuumed using a corresponding vacuuming device. In this embodiment, the vacuuming device model is mw-01 / vp-03c / mw-092.

[0071] After the vacuuming is completed, the sealing plug 14 is fully pressed into the exhaust groove 12. Since the conical structure of the sealing plug 14 fits tightly against the inner wall of the exhaust groove 12, a reliable seal can be formed, blocking the airflow channels inside and outside the container and maintaining the vacuum state inside the container.

[0072] In addition, the high elasticity of nitrile rubber ensures that the sealing plug 14 fits perfectly against the inner wall of the vent groove 12. Even if there are minor defects in the inner wall of the vent groove 12, the sealing plug 14 can fill them through deformation to avoid airtightness failure.

[0073] It should be noted that the sealing plug 14 has a hollow cavity inside and the top protrudes outward. When the sealing plug 14 seals the exhaust groove 12, the inside of the container is in a vacuum state and the container pressure is lower than the external atmospheric pressure. At this time, the protrusion on the top of the sealing plug 14 will be recessed. The vacuum sealing state inside the container can be judged by observing the degree of recess on the top of the sealing plug 14, which is convenient and quick.

[0074] In this embodiment, specifically, a date mark 13 is provided on the outer surface of the support plate 9, and an indicator arrow matching the date mark 13 is provided on the sealing plug 14. The date mark 13 consists of numbers arranged sequentially from 1 to 31, with different numbers corresponding to different dates within a month. When sealing the container, the user can rotate the sealing plug 14 of the airtight component to align the indicator arrow on the sealing plug 14 with the corresponding date scale, thereby quickly marking the storage start date. Subsequently, when checking, simply observing the scale pointed to by the indicator arrow will quickly reveal the storage start date without additional recording. This is particularly suitable for items with shelf-life requirements, such as food and reagents.

[0075] Furthermore, the sealing plug 14 and the vent groove 12 are elastically fitted, so the seal will not be damaged when rotated.

[0076] In this embodiment, the airtight component also includes a first limiting member 15 and a second limiting member 16.

[0077] Specifically, one end of the limiting member 15 is connected to the end of the sealing plug 14 near the end face sealing member 1, and the other end of the limiting member 15 is inclined toward the end face sealing member 1. The limiting member 2 16 is disposed at the end of the sealing plug 14 away from the end face sealing member 1, and a certain gap is reserved between the limiting member 2 16 and the limiting member 15. The gap between the limiting member 15 and the limiting member 2 16 is less than the thickness of the support plate 9.

[0078] Limiting element 15 and limiting element 2 16 work together to limit the sealing plug 14, preventing the sealing plug 14 from excessively disengaging from the exhaust groove 12. When it is necessary to open the sealing plug 14 for vacuuming or depressurization, the user pulls the sealing plug 14 upward, creating a gap between the sealing plug 14 and the exhaust groove 12. External gas enters the container through the gap, thereby releasing the vacuum. The limiting element 15 limits the movement of the sealing plug 14, restricting it from moving upward and preventing it from completely disengaging from the exhaust groove 12, which could lead to loss or difficulty in subsequent installation. After vacuuming is completed, when the user presses the sealing plug 14 downward to seal it, the limiting element 2 16 limits the sealing plug 14, restricting it from moving downward and preventing it from being too tightly pressed in, which could make it difficult to remove later. The limiting element 2 16 also provides the user with a clear point of force application. Whether pulling upward to open the sealing plug 14 or pressing downward to seal it, the user can operate by pinching the edge of the limiting element 2 16 with their fingers.

[0079] Furthermore, since the other end of the limiting member 15 is inclined toward the end face seal 1 and its shape is similar to a "frustum", the limiting member 15 can play a transitional guiding role when the sealing plug 14 is inserted into the vent groove 12. The gap between the limiting member 15 and the limiting member 2 16 is less than the thickness of the support plate 9, which can ensure that the limiting member 15, through the compression formed by the limiting member 15 and the limiting member 2 16 on the end face seal 1, makes it difficult for the sealing plug 14 to rotate, thereby ensuring that the indicator arrow on the sealing plug 14 can stably point to the date mark 13.

[0080] Furthermore, when the limiting member 15 and the limiting member 2 16 come into contact with the two side surfaces of the support plate 9, they will fit tightly with the surface of the support plate 9 through their own elastic deformation, forming an "auxiliary sealing surface". This sealing surface can prevent external dust and moisture from seeping into the container through the gap between the sealing plug 14 and the exhaust groove 12. Together with the main seal of the sealing plug 14, it forms "double airtight protection", further improving the dustproof and waterproof performance of the sealing cover.

[0081] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A vacuum sealing cap compatible with multi-diameter containers, characterized in that, The vacuum sealing cap includes a sealing assembly and a support assembly for forming a seal for containers of different diameters; The sealing assembly includes: an end face seal (1), a radial sealing edge (2), and a compensation part (3); The end face seal (1) is disposed on the inner surface of the support assembly and is used to form an axial seal for the ports of containers of different diameters; The radial sealing edge (2) is provided in multiple sets, one end of which is connected to one side end face of the end face seal (1) to form a radial seal for the ports of containers of different diameters, and the multiple sets of radial sealing edges (2) maintain a predetermined distance. The compensation part (3) is disposed on the side wall at the other end of the radial sealing edge (2), and the compensation part (3) is used to compensate for the gap between the radial sealing edge (2) and the port of the container with different diameters during sealing.

2. The vacuum sealing cap compatible with multi-diameter containers according to claim 1, characterized in that, The compensation part (3) is vertically disposed on the side wall of the radial sealing edge (2).

3. The vacuum sealing cap compatible with multi-diameter containers according to claim 1, characterized in that, The thickness of the compensation part (3) gradually decreases from one end near the radial seal along the side wall of (2) to the other end.

4. The vacuum sealing cap compatible with multi-diameter containers according to claim 1, characterized in that, The sealing assembly also includes an outer edge covering portion (5); The outer edge covering part (5) is disposed on the outer edge of the other end face of the end face seal (1) and is used to cover the outer periphery of the support component.

5. The vacuum sealing cap compatible with multi-diameter containers according to claim 4, characterized in that, The support assembly is provided with a support lower edge (10) and an exhaust groove (12). The support lower edge (10) is located at the edge of the exhaust groove (12) and faces the side where the end face seal (1) is located.

6. The vacuum sealing cap compatible with multi-diameter containers according to claim 5, characterized in that, The sealing assembly also includes a positioning lower edge (4); The positioning lower edge (4) is disposed on one side end face of the end face seal (1) and fits against the outer surface of the support lower edge (10), and the positioning lower edge (4) maintains a predetermined distance from the radial sealing edge (2).

7. The vacuum sealing cap compatible with multi-diameter containers according to claim 6, characterized in that, The sealing assembly also includes a fitting part (6) and a reserved groove (7); The fitting part (6) is disposed on the other end face of the end face seal (1) and recessed to one side of the end face seal (1). The fitting part (6) cooperates with the outer edge covering part (5) to form a locking with the support assembly. The reserved groove (7) is opened through the central area of ​​the end face seal (1) for communicating with the exhaust groove (12), and the reserved groove (7) is distributed close to the lower edge of the positioning (4).

8. The vacuum sealing cap compatible with multi-diameter containers according to claim 5, characterized in that, The support assembly includes a support plate (9) and a sealing lip (11). The inner surface of the support plate (9) is provided with the support lower edge (10), and the support plate (9) is provided with the exhaust groove (12) in the center. The sealing lip (11) is disposed on the inner surface of the support plate (9) and is used to form a multiple seal with the end face seal (1).

9. The vacuum sealing cap compatible with multi-diameter containers according to claim 8, characterized in that, The vacuum-sealed cover also includes an airtight component; The airtight component includes a sealing plug (14); The sealing plug (14) is detachably disposed inside the exhaust groove (12), and the outer diameter of the sealing plug (14) gradually increases from one end near the end face seal (1) to the other end, and the maximum outer diameter of the sealing plug (14) is equal to the inner diameter of the exhaust groove (12).

10. The vacuum sealing cap compatible with multi-diameter containers according to claim 9, characterized in that, The airtight component also includes a first limiting member (15) and a second limiting member (16). One end of the limiting member (15) is connected to the end of the sealing plug (14) near the end face seal (1), and the other end of the limiting member (15) is inclined toward the end face seal (1). The second limiting member (16) is disposed at the end of the sealing plug (14) away from the end face sealing member (1), and a certain gap is reserved between the second limiting member (16) and the first limiting member (15). The gap between the first limiting member (15) and the second limiting member (16) is less than the thickness of the support plate (9).

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