Vacuum seal lid

Abstract

Vacuum sealing lid, including: a first lid body (1), wherein the first lid body (1) can cover an opening of a container (2) to be sealed, forms a storage space with the bottom of the container (2) to be sealed, and can slide along the inner wall of the container (2) to be sealed, the outer wall of which is in close contact with the inner wall of the container (2) to be sealed, wherein the first lid body (1) is provided with at least a first vent hole (3) and a connecting groove (4), wherein the connecting groove (4) is arranged obliquely on the side wall of the first lid body (1), above the point where the first lid body (1) abuts the container (2) to be sealed, wherein one end of the first vent hole (3) is connected to the storage space and the other end extends through the first lid body (1) and forms an opening on the top of the first lid body (1) which can be connected to the connecting groove (4), wherein the end of the connecting groove (4)that is located away from the first vent hole (3) and is connected to the outer space of the container (2) to be sealed; , a second lid body (5), wherein the second lid body (5) is arranged around the first lid body (1) and rotatably connected to it, and wherein the second lid body (5) is equipped with at least a first sealing element (6) and a first connecting element (7), wherein the first sealing element (6) is able to seal the end of the first vent hole (3) which is away from the storage space in order to interrupt the connection between the first vent hole (3) and the connecting groove (4), wherein the first connecting element (7) is attached to the inner wall of the second lid body (5) and is slidably connected to the connecting groove (4); wherein, when the first connecting element (7) is in an upper position of the connecting groove (4), the first vent hole (3) is connected to the outside of the container (2) to be sealed, and when the first connecting element (7) slides downwards along the connecting groove (4) and the second lid body (5) moves with it, the first sealing element (6) moves towards the first vent hole (3), and when the first connecting element (7) is in a lower position of the connecting groove (4), the first sealing element (6) comes into contact with the first vent hole (3), seals the first vent hole (3) and vacuums the storage space.

Description

[0001] The present invention relates to the field of container sealing and in particular to a vacuum sealing lid.

[0002] In numerous areas, such as everyday storage, industrial production, and scientific experiments, vacuum sealing technology has established itself as an indispensable key process. It effectively excludes oxygen, moisture, and microorganisms, extending the shelf life of objects and ensuring quality stability. It is widely used in scenarios such as food preservation, pharmaceutical storage, the protection of precision electronic components, and the storage of laboratory samples. The vacuum seal lid, as the core component for achieving container vacuum sealing, is crucial, and its performance directly determines the sealing effect and the user experience.

[0003] In practical application, however, existing vacuum sealing lids exhibit numerous technical shortcomings that urgently need to be addressed. On the one hand, traditional vacuum sealing lids often rely on external evacuation devices (such as vacuum pumps, hand pumps, etc.) to achieve a vacuum seal. This not only increases operating costs but also creates portability issues, making it difficult to meet the need for immediate sealing in everyday household situations or outdoor activities. Manual sealing lids, which do not require external devices, suffer from cumbersome operating procedures and inefficient sealing. Often, multiple, repeated presses or turns are required to achieve an initial seal, and residual gas can easily remain during the sealing process, making it difficult to establish a stable high-vacuum environment.

[0004] On the other hand, the sealing stability and reliability of existing closure lids is insufficient. Most products use only a simple sealing design where the fit between the sealing element and the vents is poor. After prolonged use, wear and tear or aging can easily lead to seal failure. At the same time, effective locking mechanisms are lacking, so the seal can easily be compromised by external forces such as vibrations or shocks, allowing outside air to enter the container, disrupting the vacuum environment, and ultimately impairing the storage quality of the items. Furthermore, the compatibility of existing closure lids is often inadequate. They typically only fit containers of specific specifications and shapes, limiting their range of applications.In some products, the design of the venting structure is unfavorable, with narrow or curved gas passageways, which leads to obstructed gas release when closing and slowed air entry when opening, further deteriorating the user experience.

[0005] At the same time, existing vacuum sealing lids exhibit further design problems, such as poor component fit and force-intensive operation. For example, in some products, the rotating fit between the lid bodies is uneven, and snagging during the sealing or opening process is common. Ergonomic controls are lacking, requiring relatively high force for manual turning or pressing, making them difficult to use for groups such as the elderly or children. Furthermore, the connection design of most products is insufficiently stable; after long-term, repeated use, components can loosen or detach, shortening the product's lifespan.Therefore, the development of a vacuum sealing lid with a simple, compact structure, convenient and energy-saving operation, stable and reliable sealing, and broad compatibility in the field of sealing containers is an urgent requirement and is of great importance for improving the practicality and spread of vacuum sealing technology.

[0006] The object of the present invention is to provide a vacuum sealing lid that enables a vacuum sealing of a container and has convenient handling, stable sealing and high adaptability in order to solve the existing technical deficiencies and unattainable technical requirements.

[0007] To solve the aforementioned problem, the present invention offers the following technical solution: A vacuum sealing lid comprising: a first lid body, wherein the first lid body can cover an opening of a container to be sealed, forms a storage space with the bottom of the container to be sealed, and can slide along the inner wall of the container to be sealed, the outer wall of which rests tightly against the inner wall of the container to be sealed, wherein the first lid body is provided with at least a first vent hole and a connecting groove, the connecting groove being arranged obliquely on the side wall of the first lid body above the point where the first lid body rests against the container to be sealed, one end of the first vent hole being connected to the storage space and the other end passing through the first lid body and forming an opening on the top of the first lid body which can be connected to the connecting groove, the end of the connecting groove being furthest from the first vent holeis connected to the outer space of the container to be sealed; a second lid body, wherein the second lid body is arranged around the first lid body and rotatably connected to it, and wherein the second lid body is equipped with at least a first sealing element and a first connecting element, wherein the first sealing element is able to seal the end of the first vent hole which is away from the storage space in order to interrupt the connection between the first vent hole and the connecting groove, wherein the first connecting element is attached to the inner wall of the second lid body and is slidably connected to the connecting groove;

[0008] Whereas, when the first connecting element is in an upper position of the connecting groove, the first vent hole is connected to the outside of the container to be sealed; when the first connecting element slides downwards along the connecting groove and the second lid body moves with it, the first sealing element moves towards the first vent hole; and when the first connecting element is in a lower position of the connecting groove, the first sealing element comes into contact with the first vent hole, seals the first vent hole and vacuums the storage space.

[0009] This application further explains that the storage space has the following characteristics: First, the storage space is located inside the container to be sealed. Second, the storage space is formed by the bottom of the container to be sealed, the inner wall of the container to be sealed, and the surface of the first lid body that can cover the opening of the container to be sealed.

[0010] Furthermore, it can be understood that in this application the first lid body is arranged inside the container to be sealed, while the second lid body is arranged around the first lid body and positioned above the first lid body.

[0011] Furthermore, it should be clarified that the term "tight" in this application always has a sealing meaning. For example, the aforementioned "tight fit" can be understood to mean that two parts are in contact with each other and the space between them is blocked for the passage of gases, liquids or solids, thus creating a sealing relationship.

[0012] Furthermore, in this application, the term "external space of the container to be sealed" means a space with a pressure greater than or equal to standard atmospheric pressure and is not limited to the area outside the container. Since, for example, the closure lid is located entirely inside the container to be sealed, the space within the container above the closure lid also belongs to the external space of the container to be sealed. Therefore, it can be understood, in simplified terms, that the storage space is vacuum-sealed when the container is sealed by the closure lid, while the external space of the container to be sealed is pressurized greater than or equal to standard atmospheric pressure.

[0013] Preferably, the first cover body is provided with a limiting element. The limiting element is attached to the inner wall of the connecting groove, is located in a lower position of the connecting groove, is able to bear against and connect with the first connecting element, prevents the first connecting element from retracting without external force, and thus ensures a stable connection between the first sealing element and the first vent hole.

[0014] This application must explain that the arrangement of the limiting element can ensure a stable positional relationship between the sealing element and the first vent hole.

[0015] Preferably, the first lid body is provided on its upper side with a side plate, wherein the side plate is arranged around the opening that forms the first vent hole on the upper side of the first lid body and encloses an opening above the upper side of the first lid body.

[0016] The second cover body is arranged around the side plate and rotatably connected to it; the second cover body can cover the opening enclosed by the side plate; a first transition space is formed between the inner wall of the side plate, the top of the first cover body, and the inner wall of the second cover body; the first transition space is connected to the first vent hole; and the first sealing element is arranged in the first transition space.

[0017] The connecting groove is formed in the side wall of the side plate, with one end connected to the outer space of the container to be sealed and the other end connected to the first transition space.

[0018] If the first connecting element is in an upper position of the connecting groove, the first vent hole is connected to the connecting groove via the first transition space; if the first connecting element is in a lower position of the connecting groove, the first sealing element is sealed to the first vent hole and interrupts the connection between the first vent hole and the outside of the container to be sealed.

[0019] This application further clarifies that the specific form of the first transition space is not restricted; it is sufficient that a sealed space is formed. This space can therefore also be in the form of holes or grooves. The primary purpose of the transition space is to establish the connection between the first vent hole and the outer space of the container to be sealed.

[0020] Furthermore, it should be noted that, provided a side plate is present and it has other holes or grooves that can connect to the outer chamber of the container, the connecting groove need not be a continuous slot. In this case, the connection between the first transition chamber and the outer chamber of the container does not necessarily have to be made via the connecting groove.

[0021] Preferably, a mounting groove is formed in the outer wall of the first lid body, in which a second sealing element is arranged. The second sealing element rests against the side wall of the container to be sealed and is slidably connected to it, thereby further preventing gas exchange between the storage chamber and the outside of the container in the area between the second sealing element and the container wall.

[0022] Preferably, the invention further comprises a third lid body. The third lid body is connected to the lower end of the first lid body, a second transition chamber is formed inside it, and several second vent holes are formed at its lower end. One end of the second vent holes is connected to the storage chamber, the other end is connected to the second transition chamber.

[0023] The end of the first vent hole, furthest from the first sealing element, forms an opening at the bottom of the first cover body. The third cover body covers the lower end of the first vent hole, and the second transition chamber is connected to the first vent hole.

[0024] Preferably the connecting groove comprises: a guide section, wherein one end of the guide section is attached to the side wall of the first cover body and the other end extends obliquely downwards along the first cover body, and wherein the first connecting element can be arranged in the guide section and is slidably connected to it; an assembly section, wherein one end of the assembly section is connected to the upper end of the guide section and the other end extends horizontally away from the guide section, and wherein the first connecting element is connected to the assembly section; a positioning section, wherein one end of the positioning section is connected to the lower end of the guide section and the other end extends horizontally away from the guide section, and wherein the first connecting element is connected to the positioning section; where the boundary element includes: a first limiting section, wherein the first limiting section is attached at the transition point between the assembly section and the guide section, the first limiting section can rest against the first connecting element, so that the first connecting element can be stably mounted in the assembly section without the influence of an external force in order to establish a connection between the first vent hole and the outside space of the container to be sealed; a second limiting section, wherein the second limiting section is attached at the transition point between the positioning section and the guide section, the second limiting section can rest against the first connecting element, so that the first connecting element can be stably mounted in the positioning section without the influence of an external force in order to separate the connection between the first vent hole and the outside space of the container to be sealed.

[0025] Preferably, the side plate is provided with an adapter mounting groove. The adapter mounting groove is inclined from top to bottom, forms an opening on both the top and side walls of the side plate, and is located above the connecting groove. The first connecting element can be slidably connected to the adapter mounting groove. This allows the first connecting element to be inserted more easily into the connecting groove via the adapter mounting groove. It is irrelevant whether the adapter mounting groove is connected to the connecting groove or not. In addition to the aforementioned positional relationship that the adapter mounting groove is located above the connecting groove, the following should be explained: Since the connecting groove consists of three parts, and the above statement referred to the connecting groove as a whole, the adapter mounting groove would, strictly speaking, have to be located above all three components.However, it is explicitly clarified here that for a connecting groove consisting of three parts (guide section, assembly section, and positioning section), it is sufficient if the adapter mounting groove is located above only one of these parts. The crucial factor is that the first connecting element can easily enter the connecting groove, regardless of its precise entry point.

[0026] Preferably, the lower surface of the second cover body lies below the first connecting element.

[0027] The inner wall of the second lid body lies close to the outer wall of the side plate.

[0028] After the first sealing element has sealed the first vent hole, the lower surface of the second cover body can lie close to the upper surface of the first cover body.

[0029] Preferably, the invention further comprises a handle. The handle is rotatably connected to the second lid body and is arranged above the second lid body.

[0030] This application further explains that if the handle is rotatably connected to the second cover body, an axis of rotation exists. Since the second and first cover bodies can also rotate relative to each other, turning the handle – in a direction perpendicular to the axis of rotation – allows for a convenient and effortless change in the relative position between the second and first cover bodies. This results in the desired change in position between the first sealing element and the first vent hole, thus altering their connection relationship.

[0031] Preferably, the first lid body is equipped with at least two connecting grooves, wherein at least two connecting grooves are arranged opposite each other.

[0032] This application further clarifies the connection grooves as follows: If multiple connection grooves are provided, they primarily serve as guides to facilitate a relative displacement between the first sealing element and the first vent hole. They can also act as a medium for the connection between the first vent hole and the exterior of the container, simultaneously achieving the technical effect of a stable connection between the first and second lid bodies. Furthermore, the number of first connecting elements corresponds to the number of connection grooves.

[0033] In comparison to the prior art, the present invention has the following advantageous effects: 1. Through the rotatable interaction of the first and second lid bodies and the guiding effect of the sliding connection between the connecting groove and the first connecting element, this design allows switching between venting and sealing simply by manually rotating the second lid body – without additional evacuation devices. Operation is quick and effortless. The tight fit between the first sealing element and the first vent hole, combined with the sealing of the gap between the first lid body and the container by the second sealing element, results in a double sealing structure that effectively prevents gas exchange. At the same time, the arrangement of the limiting element prevents the seal from loosening without external force and maintains the vacuum environment in the storage space over the long term. 2. The first lid body of this application can be flexibly positioned inside the container to be sealed. As long as the container has a space formed by the bottom and side walls with an opening, it is compatible with this application. This means that the application can be adapted to containers of different designs and specifications, thus enabling a wide range of applications.

[0034] Furthermore, the concepts of the first and second transition chambers optimize the gas flow path and ensure smooth gas inflow and outflow during the sealing and opening process. The arrangement of the adapter mounting groove reduces the required precision between the first connecting element and the connecting groove, thus increasing ease of assembly and operation.

[0035] 3. The handle design of this application further enhances ease of use. The symmetrical arrangement of multiple connecting grooves ensures the stability of the connection between the first and second cover bodies. The precise fit of the various components reduces wear and extends the product's service life. Fig. Figure 1 shows a schematic overall view of embodiment 1 of the present invention. Fig. Figure 2 shows a schematic overall view of embodiment 1 of the present invention in the closed state of the container. Fig. Figure 3 shows an exploded view of the overall structure of embodiment 1 of the present invention. Fig. Figure 4 shows a schematic overall view of the first lid body in embodiment 1 of the present invention. Fig. Figure 5 shows a schematic overall view of the second lid body in embodiment 1 of the present invention. Fig. Figure 6 shows a schematic overall view of the third lid body in embodiment 1 of the present invention. Fig. Figure 7 shows a section through the overall structure of embodiment 1 of the present invention. Fig. Figure 8 shows an enlarged schematic representation of part of the structure of embodiment 1 of the present invention.

[0036] In the description of this utility model, it is understood that the terms "first," "second," etc., are for descriptive purposes only and must not be interpreted as indicating or implying a relative meaning or as implicitly specifying the number of technical features indicated. Therefore, features designated as "first," "second," etc., may expressly or implicitly include one or more of these features.

[0037] Referring to Fig. Figure 1-7 shows an embodiment of the present invention: Example 1:

[0038] As in Fig. Shown in 1-5, includes a vacuum sealing lid: a first lid body (1), wherein the first lid body (1) can cover an opening of a container (2) to be sealed, a storage space is formed between them, and the first lid body (1) can slide along the side wall of the container (2) to be sealed, its side wall being in close contact with the side wall of the container (2) to be sealed, wherein the first lid body (1) is provided with at least a first vent hole (3) and a connecting groove (4), wherein the connecting groove (4) is arranged obliquely on the side wall of the first lid body (1), and wherein one end of the first vent hole (3) is connected to the storage space and the other end passes through the first lid body (1) and can be connected to the outside space of the container (2) to be sealed; a second lid body (5), wherein the second lid body (5) is arranged around the first lid body (1) and is rotatably connected to it, and wherein the second lid body (5) is equipped with at least a first sealing element (6) and a first connecting element (7), wherein the first sealing element (6) is able to seal the end of the first vent hole (3) which is away from the storage space, and wherein the first connecting element (7) is attached to the side wall of the second lid body (5) and is slidably connected to the connecting groove (4); wherein, when the first connecting element (7) is in an upper position of the connecting groove (4), the first vent hole (3) is connected to the outside of the container (2) to be sealed; when the first connecting element (7) slides downwards along the connecting groove (4) and the second lid body (5) moves with it, the first sealing element (6) moves towards the first vent hole (3); and when the first connecting element (7) is in a lower position of the connecting groove (4), the first sealing element (6) comes into contact with the first vent hole (3), seals the first vent hole (3), and vacuums the storage space.

[0039] Specifically, in this embodiment, the outer wall of the first lid body (1) is pressed tightly against the inner wall of the container (2) to be sealed; that is, the first lid body (1) is located inside the container (2) to be sealed. The inner wall of the second lid body (5) is connected to the outer wall of the first lid body (1); that is, the second lid body (5) is arranged around the first lid body (1).

[0040] As in Fig. Figure 8 shows the first lid body (1) provided with a limiting element.

[0041] The boundary element includes: a first limiting section (17), wherein the first limiting section (17) is attached at the transition point between the assembly section (15) and the guide section (14), the first limiting section (17) can abut the first connecting element (7) so that the first connecting element (7) can be stably mounted in the assembly section (15) without the influence of an external force in order to establish a connection between the first vent hole (3) and the outside space of the container (2) to be sealed; a second limiting section (18), wherein the second limiting section (18) is attached at the transition point between the positioning section (16) and the guide section (14), the second limiting section (18) can abut the first connecting element (7) so that the first connecting element (7) can be stably mounted in the positioning section (16) without the influence of an external force in order to separate the connection between the first vent hole (3) and the outer space of the container (2) to be sealed.

[0042] In this embodiment, the first limiting section (17) restricts the movement of the first connecting element (7) within the assembly section (15) and ensures that, in the unsealed state, a stable connection exists between the first vent hole (3) and the outside, thus facilitating gas passage. The second limiting section (18) fixes the position of the first connecting element (7) within the positioning section (16) and ensures that, in the sealed state, the first sealing element (6) rests tightly against the first vent hole (3). This prevents seal failure due to external forces such as vibrations or shocks and increases the stability of the vacuum seal.

[0043] As in Fig. Figure 4 shows that the end of the first vent hole (3), which is furthest from the storage chamber, forms an opening on the top of the first cover body (1). The top of the first cover body (1) is provided with a side plate (8), between the inner wall of which and the top of the first cover body (1) a first transition space (9) is formed, which is connected to the first vent hole (3).

[0044] The second lid body (5) is arranged around the side plate (8) and rotatably connected to it.

[0045] The connecting groove (4) is formed in the side wall of the side plate (8) as a continuous slot, with one end connected to the outer space of the container (2) to be sealed and the other end connected to the first transition space (9).

[0046] When the first connecting element (7) is in an upper position of the connecting groove (4), the first vent hole (3) is connected to the connecting groove (4) via the first transition space (9). When the first connecting element (7) is in a lower position of the connecting groove (4), the first sealing element (6) is sealed to the first vent hole (3) and interrupts the connection between the first vent hole (3) and the outer space of the container (2) to be sealed.

[0047] As in Fig. 1, Fig. 2 and Fig. Figure 7 shows a mounting groove formed in the outer wall of the first lid body (1), in which a second sealing element (10) is arranged. The second sealing element (10) rests against the inner wall of the container (2) to be sealed and is slidably connected to it, thereby further preventing gas exchange between the storage space and the outer space of the container (2) in the area between the second sealing element (10) and the container (2).

[0048] As in Fig. 3 and Fig. As shown in Figure 6, the arrangement further comprises a third cover body (11). The third cover body (11) is connected to the lower end of the first cover body (1), a second transition chamber (12) is formed inside it, and several second vent holes (13) are formed at its lower end. One end of the second vent holes (13) is connected to the storage chamber, the other end is connected to the second transition chamber (12).

[0049] The end of the first vent hole (3), which is furthest from the first sealing element (6), forms an opening at the bottom of the first cover body (1). The third cover body (11) covers the lower end of the first vent hole (3), and the second transition chamber (12) is connected to the first vent hole (3).

[0050] In this embodiment, the second vent holes (13) increase the gas contact area between the storage chamber and the second transition chamber (12), allowing gases to flow quickly and evenly through the storage chamber. This increases the efficiency of gas removal during sealing and air entry during opening. The third cover body (11) protects the lower end of the first vent hole (3) and prevents objects in the storage chamber from coming into direct contact with and blocking the first vent hole (3). Simultaneously, the second transition chamber (12) optimizes the gas flow path and ensures a smooth sealing process.

[0051] As in Fig. The connecting groove (4) shown in Figure 8 includes: a guide section (14), wherein one end of the guide section (14) is attached to the side wall of the first cover body (1) and the other end extends obliquely downwards along the first cover body (1), and wherein the first connecting element (7) can be arranged in the guide section (14) and is slidably connected to it; a mounting section (15), wherein one end of the mounting section (15) is connected to the upper end of the guide section (14) and the other end extends horizontally away from the guide section (14), and wherein the first connecting element (7) is connected to the mounting section (15); a positioning section (16), wherein one end of the positioning section (16) is connected to the lower end of the guide section (14) and the other end extends horizontally away from the guide section (14), and wherein the first connecting element (7) is connected to the positioning section (16).

[0052] In this embodiment, the inclined design of the guide section (14) provides stable sliding guidance for the first connecting element (7) and enables its smooth movement from the assembly section (15) to the positioning section (16), thus achieving a smooth change in the sealing state. The horizontally extended structures of the assembly section (15) and the positioning section (16), in conjunction with the first (17) and second limiting sections (18), enable precise positioning of the first connecting element (7). This ensures that both the unsealed and sealed states are maintained stably, preventing jamming or positional deviation during operation.

[0053] As in Fig. Figure 8 shows the side plate (8) being provided with an adapter mounting groove (19). The adapter mounting groove (19) is inclined from top to bottom, forms an opening on both the top and side wall of the side plate (8), and is located above the connecting groove (4). The first connecting element (7) can be slidably connected to the adapter mounting groove (19).

[0054] In this embodiment, the downward-sloping structure of the adapter mounting groove (19) provides a convenient insertion path for the first connecting element (7), enabling its quick and precise insertion into the connecting groove (4) and thus reducing the difficulties of assembly and alignment during operation. At the same time, the positional alignment between the adapter mounting groove (19) and the connecting groove (4) ensures the continuity of the sliding action of the first connecting element (7) and increases ease of use.

[0055] As in Fig. As shown in Figure 7, the lower surface of the second lid body (5) lies below the first connecting element (7).

[0056] The inner wall of the second lid body (5) lies close to the outer wall of the side plate (8).

[0057] After the first sealing element (6) has sealed the first vent hole (3), the lower surface of the second cover body (5) can lie close to the upper surface of the first cover body (1).

[0058] In this embodiment, the tight fit of the second lid body (5) to the side plate (8) reduces the gas gap between them and prevents gas from escaping through this gap and impairing the sealing effect. The tight fit of the lower surface of the second lid body (5) to the upper surface of the first lid body (1) after sealing further blocks the path for outside air to penetrate into the first transition space (9) and forms a triple sealing structure, which significantly increases the reliability of the vacuum seal. The design, in which the lower surface of the second lid body (5) lies below the first connecting element (7), protects the first connecting element (7) from external influences such as impacts or friction and extends its service life.

[0059] As in Fig. As shown in Figures 1-2, the arrangement further comprises a handle (20). The handle (20) is rotatably connected to the second lid body (5) and is arranged above the second lid body (5).

[0060] In this embodiment, the rotatable connection of the handle (20) to the second lid body (5) reduces the force required to rotate the second lid body (5) through the lever principle, thus making sealing and opening operations less strenuous. At the same time, the positioning of the handle (20) above the second lid body (5) facilitates gripping and applying force by the user, increasing ease of use and comfort, especially for users with less hand strength or during frequent use.

[0061] As in Fig. Figure 4 shows the first lid body (1) equipped with four connecting grooves (4), wherein at least two connecting grooves (4) are arranged opposite each other.

[0062] In this embodiment, the arrangement of four connecting grooves (4) ensures a more balanced interaction between the first connecting element (7) and the connecting grooves, guarantees a uniform force distribution between the first cover body (1) and the second cover body (5), and prevents problems such as misalignment or jamming during the rotation process. The opposing arrangement of the connecting grooves (4) further increases the symmetry and stability of the structure, reduces potential component deformation due to uneven loading during long-term use, and extends the product's service life. Simultaneously, uniform contact of the first sealing element (6) with the first vent hole (3) during the sealing process is ensured, thus improving the sealing effect. Reference symbol list 1 First lid body 2 containers to be sealed 3 first vent hole 4 connecting groove 5 second lid body 6 first sealing element 7 first connecting element 8 side panel 9 first transition room 10 second sealing element 11 third lid body 12 second transition room 13 second ventilation holes 14 Leadership section 15 Assembly section 16 Positioning section 17 first boundary section 18 second boundary section 19 Adapter mounting slot 20 handle

Claims

Vacuum sealing lid comprising: a first lid body (1), wherein the first lid body (1) can cover an opening of a container (2) to be sealed, forms a storage space with the bottom of the container (2) to be sealed, and can slide along the inner wall of the container (2) to be sealed, the outer wall of which rests tightly against the inner wall of the container (2), wherein the first lid body (1) is provided with at least a first vent hole (3) and a connecting groove (4), wherein the connecting groove (4) is arranged obliquely on the side wall of the first lid body (1), above the point where the first lid body (1) rests against the container (2) to be sealed, wherein one end of the first vent hole (3) is connected to the storage space and the other end extends through the first lid body (1) and forms an opening on the top of the first lid body (1) which can be connected to the connecting groove (4),wherein the end of the connecting groove (4) that is furthest from the first vent hole (3) is connected to the outer space of the container (2) to be sealed; a second lid body (5), wherein the second lid body (5) is arranged around the first lid body (1) and rotatably connected to it, and wherein the second lid body (5) is equipped with at least a first sealing element (6) and a first connecting element (7), wherein the first sealing element (6) is capable of sealing the end of the first vent hole (3) that is furthest from the storage space in order to interrupt the connection between the first vent hole (3) and the connecting groove (4), wherein the first connecting element (7) is attached to the inner wall of the second lid body (5) and is slidably connected to the connecting groove (4); wherein, when the first connecting element (7) is in an upper position of the connecting groove (4),the first vent hole (3) is connected to the outside of the container (2) to be sealed, and when the first connecting element (7) slides downwards along the connecting groove (4) and the second lid body (5) moves with it, the first sealing element (6) moves towards the first vent hole (3), and when the first connecting element (7) is in a lower position of the connecting groove (4), the first sealing element (6) makes contact with the first vent hole (3), seals the first vent hole (3) and vacuums the storage space. Vacuum sealing lid according to claim 1, characterized in that the first lid body (1) is equipped with a limiting element, wherein the limiting element is attached to the inner wall of the connecting groove (4), is located in a lower position of the connecting groove (4), is able to bear against the first connecting element (7) and connect with it in order to prevent the first connecting element (7) from retracting without external force and thus to ensure a stable connection between the first sealing element (6) and the first vent hole (3). Vacuum sealing lid according to claim 2, characterized in that the first lid body (1) is provided on its upper side with a side plate (8), wherein the side plate (8) is arranged around the opening that forms the first vent hole (3) on the upper side of the first lid body (1), and encloses an opening above the upper side of the first lid body (1); wherein the second lid body (5) is arranged around the side plate (8) and rotatably connected to it, the second lid body (5) can cover the opening enclosed by the side plate (8), a first transition space (9) is formed between the inner wall of the side plate (8), the upper side of the first lid body (1) and the inner wall of the second lid body, the first transition space (9) is connected to the first vent hole (3) and the first sealing element (6) is arranged in the first transition space (9);wherein the connecting groove (4) is formed in the side wall of the side plate (8), one end is connected to the outside space of the container (2) to be sealed and the other end is connected to the first transition space (9); wherein, when the first connecting element (7) is in an upper position of the connecting groove (4), the first vent hole (3) is connected to the connecting groove (4) via the first transition space (9), and when the first connecting element (7) is in a lower position of the connecting groove (4), the first sealing element (6) is sealingly connected to the first vent hole (3) and interrupts the connection between the first vent hole (3) and the outside space of the container (2) to be sealed. Vacuum sealing lid according to one of the preceding claims, characterized in that a mounting groove is formed in the outer wall of the first lid body (1) in which a second sealing element (10) is arranged, wherein the second sealing element (10) rests against the side wall of the container (2) to be sealed and is slidably connected to it, thus further preventing gas exchange between the storage space and the outer space of the container (2) in the area between the second sealing element (10) and the side wall of the container (2). Vacuum sealing lid according to claim 4, characterized in that it further comprises a third lid body (11), wherein the third lid body (11) is connected to the lower end of the first lid body (1), a second transition chamber (12) is formed inside it and several second vent holes (13) are formed at its lower end, wherein one end of the second vent holes (13) is connected to the storage chamber and the other end is connected to the second transition chamber (12); wherein the end of the first vent hole (3) that is away from the first sealing element (6) forms an opening at the bottom of the first lid body (1), the third lid body (11) covers the lower end of the first vent hole (3) and the second transition chamber (12) is connected to the first vent hole (3). Vacuum sealing lid according to claim 3, characterized in that the connecting groove (4) comprises: a guide section (14), wherein one end of the guide section (14) is attached to the side wall of the first lid body (1) and the other end extends obliquely downwards along the first lid body (1), wherein the first connecting element (7) can be arranged in the guide section (14) and is slidably connected to it; a mounting section (15), wherein one end of the mounting section (15) is connected to the upper end of the guide section (14) and the other end extends horizontally away from the guide section (14), wherein the first connecting element (7) is connected to the mounting section (15);a positioning section (16), wherein one end of the positioning section (16) is connected to the lower end of the guide section (14) and the other end extends horizontally away from the guide section (14), wherein the first connecting element (7) is connected to the positioning section (16); wherein the limiting element comprises: a first limiting section (17), wherein the first limiting section (17) is attached at the transition point between the assembly section (15) and the guide section (14), wherein the first limiting section (17) can abut the first connecting element (7) so that the first connecting element (7) can be stably mounted in the assembly section (15) without the application of an external force to establish a connection between the first vent hole (3) and the outside space of the container (2) to be sealed;a second limiting section (18), wherein the second limiting section (18) is attached at the transition point between the positioning section (16) and the guide section (14), wherein the second limiting section (17) can abut the first connecting element (7) so that the first connecting element (7) can be stably mounted in the positioning section (16) without the influence of an external force in order to separate the connection between the first vent hole (3) and the outer space of the container (2) to be sealed. Vacuum sealing lid according to claim 6, characterized in that the side plate (8) is provided with an adapter mounting groove (19), wherein the adapter mounting groove (19) is inclined from top to bottom and forms an opening on the top and on the side wall of the side plate (8), and wherein the adapter mounting groove (19) is arranged above the connecting groove (4) and the first connecting element (7) can be slidably connected to the adapter mounting groove (19). Vacuum sealing lid according to one of the preceding claims, characterized in that the lower surface of the second lid body (5) lies below the first connecting element (7); the inner wall of the second lid body (5) lies close to the outer wall of the side plate (8); and after the first sealing element (6) has sealed the first vent hole (3), the lower surface of the second lid body (5) can lie close to the upper surface of the first lid body (1). Vacuum sealing lid according to claim 8, characterized in that it further comprises a handle (20), wherein the handle (20) is rotatably connected to the second lid body (5) and is arranged above the second lid body (5). Vacuum sealing lid according to claim 9, characterized in that the first lid body (1) is equipped with at least two connecting grooves (4) and at least two connecting grooves (4) are arranged opposite each other.

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