Vacuum cover and vacuum container

Abstract

The utility model discloses a vacuum cover and a vacuum container, and the vacuum cover comprises a cover body which is provided with a mounting hole penetrating through the cover body; the vacuum valve is arranged on the cover body, and the vacuum valve comprises an outer side part, an inner side part and a connecting part; and the surface, facing the cover body, of the outer side part is a complete surface and is in contact with the outer surface of the cover body in a vacuumized state so as to seal the mounting hole. Due to the fact that the vacuum valve is arranged on the vacuum cover, vacuumizing equipment can be adopted to vacuumize the vacuum container through the vacuum valve, the whole vacuum container does not need to be placed in the vacuumizing equipment, the vacuumizing difficulty is lowered, vacuum sealing operation is simple, and a family user can achieve vacuumizing operation to preserve food in a vacuum mode. Wherein the surface, facing the cover body, of the outer side part is a complete surface and is in contact with the outer surface of the cover body in a vacuumized state so as to seal the mounting hole. The complete surface of the outer side part and the outer surface of the cover body can form continuous contact sealing with a larger area, so that the sealing effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum storage, and particularly relates to a vacuum cover and a vacuum container. Background Art

[0002] In the prior art, one of the following two common methods is used to seal a Mason jar: 1. After heating the object in the jar, tighten the bottle cap, and rely on thermal expansion and contraction to discharge gas to form a seal; 2. Use a vacuum pumping device that can cover the entire body of the Mason jar to pump negative pressure on the whole Mason jar, and rely on the deformation of the metal bottle cap to form a seal. Both of these methods have problems of complex sealing operations and poor sealing effects. Content of the Utility Model

[0003] The utility model provides a vacuum cover and a vacuum container, which are used to solve the problems of poor sealing effect and complex sealing operation of the vacuum container.

[0004] In one embodiment, a vacuum cover of a vacuum container is provided, including:

[0005] A cover body for vacuum-sealing a container body, and the cover body is provided with a mounting hole penetrating through the cover body;

[0006] A vacuum valve, the vacuum valve is arranged on the cover body, the vacuum valve includes an outer part, an inner part and a connecting part, the outer part is located on the outer side of the cover body for facing away from the container body, the inner part is located on the inner side of the cover body for facing the container body, the connecting part penetrates through the mounting hole, one end of the connecting part is connected to the outer part, and the other end of the connecting part is connected to the inner part;

[0007] Wherein, the surface of the outer part facing the cover body is at least partially in contact with the outer surface of the cover body in a vacuum state to form a seal for the mounting hole.

[0008] In one embodiment, the surface of the outer part facing the cover body is provided with a sealing protrusion, and the sealing protrusion surrounds the periphery of the connecting part; the sealing protrusion is in contact with the outer surface of the cover body in a vacuum state to form a seal for the mounting hole.

[0009] In one embodiment, the sealing protrusion includes one or more annular protrusions, and the inner diameter of the annular protrusion is greater than the inner diameter of the mounting hole.

[0010] In one embodiment, the sealing protrusion is a flexible material structure, and / or the vacuum valve is an integrated flexible material structure.

[0011] In one embodiment, the inner diameter of the connecting portion is smaller than that of the mounting hole, and the length of the connecting portion is greater than that of the mounting hole, and an air passage is formed between the connecting portion and the mounting hole.

[0012] In one embodiment, the inner portion is provided with a first ventilation structure. One end of the first ventilation structure communicates with the air passage, and the other end of the first ventilation structure extends to the side of the inner portion facing away from the cover body, or the other end of the first ventilation structure extends to the circumferential edge of the inner portion.

[0013] In one embodiment, the inner portion includes a plurality of sheet-like structures distributed in a central array, and the hollowed-out area between two adjacent sheet-like structures forms the first ventilation structure.

[0014] In one embodiment, the surface of the outer portion facing the cover body is provided with a second ventilation structure. One end of the second ventilation structure extends to communicate with the air passage, and the other end of the second ventilation structure extends to the sealing protrusion.

[0015] In one embodiment, the second ventilation structure includes one or more ventilation grooves distributed along the center.

[0016] In one embodiment, the vacuum valve can rotate relative to the cover body in a non-evacuated state; one of the vacuum valve and the cover body is provided with a date mark, and the other is provided with a date pointer. The date pointer can rotate to align with the date in the date mark to indicate the vacuum preservation date;

[0017] Alternatively, the outer portion is provided with an indicating diaphragm. One side of the indicating diaphragm is exposed on the surface of the outer portion facing away from the cover body. The vacuum valve is provided with a connection hole penetrating through the inner portion and the connecting portion. One end of the connection hole extends to the other side of the indicating diaphragm, and the other end of the connection hole is used to communicate with the container cavity; in a non-evacuated state of the container cavity, the indicating diaphragm is in a convex or flat state; in an evacuated state of the container cavity, the indicating diaphragm is in a concave state.

[0018] In one embodiment, a vacuum container is provided, including:

[0019] A container body having a container cavity for accommodating food, and one end of the container cavity is provided with an opening;

[0020] The above-mentioned vacuum cover for covering the container body to seal the opening.

[0021] According to the vacuum lid and vacuum container of the above embodiment, since the vacuum lid is provided with a vacuum valve, a vacuum can be drawn through the vacuum valve using a vacuuming device, eliminating the need to place the entire vacuum container within the vacuuming device. This reduces the difficulty of drawing a vacuum and simplifies the vacuum sealing operation, allowing home users to perform vacuum drawing operations and preserve food in a vacuum. The surface of the outer portion facing the cover body is a complete surface, which, when vacuumed, contacts the outer surface of the cover body to form a seal against the mounting hole. The complete surface of the outer portion and the outer surface of the cover body form a continuous, larger-area contact seal, thereby improving the sealing effect.

[0022] Furthermore, the vacuum valve is provided with a sealing protrusion, which can improve the sealing effect of the vacuum valve. The sealing protrusion forms a linear seal. The user can easily open the vacuum valve in the vacuum state with his hands. The operation is simple and is especially suitable for home users to operate by themselves. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a vacuum container in one embodiment;

[0024] Figure 2 is a cross-sectional view of a vacuum container in one embodiment;

[0025] Figure 3 A partial cross-sectional view of a vacuum container in an un-vacuumed state according to an embodiment;

[0026] Figure 4 A partial cross-sectional view of a vacuum container in a vacuumed state according to an embodiment;

[0027] Figure 5 This is a structural diagram of the front side of a vacuum valve in one embodiment;

[0028] Figure 6 This is a schematic structural diagram of the back side of a vacuum valve in one embodiment;

[0029] Figure 7 This is a schematic structural diagram of a vacuum container in one embodiment;

[0030] The accompanying drawings are numerals as follows:

[0031] 1 - Vacuum cover, 11 - Cover body, 111 - Mounting hole, 112 - Date mark, 12 - Vacuum valve, 121 - Outer portion, 1211 - Second ventilation structure, 1212 - Date pointer, 1213 - Indicator diaphragm, 122 - Inner portion, 1221 - First ventilation structure, 123 - Connecting portion, 124 - Air channel, 125 - Sealing protrusion, 126 - Connecting hole;

[0032] 2-container body, 21-container cavity. DETAILED DESCRIPTION

[0033] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification to avoid overwhelming the core part of the present application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and general technical knowledge in the art.

[0034] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean that they are the necessary sequences, unless it is stated otherwise that a certain sequence must be followed.

[0035] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connection" and "coupling" used in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0036] In one embodiment, a vacuum container is provided. This vacuum container can also be a tank-shaped or bottle-shaped container. For example, this vacuum container is a Mason jar. This vacuum container is used for vacuum-preserving food and can also be used for vacuum-preserving other items.

[0037] This vacuum container is provided with a vacuum valve. A vacuum pumping device can evacuate the vacuum container through the vacuum valve. The vacuum valve is small in size, enabling the use of a household vacuum pumping device to evacuate the vacuum container. In the prior art, the vacuum container needs to be evacuated through the gap between the container body and the lid, so the entire vacuum container needs to be placed inside the vacuum pumping device to achieve evacuation. This vacuum container can be evacuated through the vacuum valve without placing the entire vacuum container inside the vacuum pumping device, which can reduce the difficulty of evacuating the vacuum container, and the operation of evacuating and sealing this vacuum container is simple.

[0038] The vacuum valve of this vacuum container has a complete surface that contacts and seals with the vacuum container lid. This complete surface does not have openings or through-holes that penetrate along the axial direction of the vacuum valve and other structures that affect its continuous sealing, enabling the vacuum valve and the lid to form a larger contact seal within a limited structural range, which can improve the vacuum sealing effect. Understandably, the surface of the outer side portion facing away from the lid is also a complete surface, making the overall appearance more beautiful and strengthening the sealing effect.

[0039] Furthermore, the vacuum valve of this vacuum container is provided with a sealing protrusion. After evacuation, the sealing protrusion will contact the container lid. The sealing protrusion has the same effect as the waterproof sealing ring, which can improve the sealing effect. Moreover, the sealing protrusion can also form a linear seal. With this structure, users only need to apply a relatively small force to open the vacuum valve, which is convenient for users to open the vacuum-sealed vacuum container. It should be noted that the linear seal corresponds to the surface seal. The sealing area of the linear seal is smaller than that of the surface seal. For example, the linear seal includes the sealing of an annular area. The linear seal does not refer to a literal linear seal.

[0040] Please refer to Figures 1 to 5 , the vacuum container of this embodiment mainly includes a vacuum lid 1 and a container body 2.

[0041] The container body 2 has a container cavity 21. One end of the container cavity 21 is provided with an opening. For example, the upper end of the container cavity 21 is provided with an opening. The container body 2 can be made of a hard material such as glass to form a stable container cavity 21.

[0042] The container body 2 can include different specifications. Different specifications of the container body 2 have container cavities 21 with different volumes. For example, the container body 2 can include container cavities 21 with volumes of 500 ml, 1 L, 2 L, etc. Different volumes of the container body 2 can have the same-sized openings so that different volumes of the container body 2 can be adapted to the same vacuum lid 1. If the vacuum lid 1 is lost, other vacuum lids 1 can be used for sealing to reduce the user's usage cost.

[0043] In other embodiments, different volumes of the container body 2 can also be provided with different-sized openings, and each container body 2 is provided with a corresponding vacuum lid 1. Such a setting can ensure that special foods use the corresponding vacuum lid 1 and avoid the misuse of the vacuum lid 1.

[0044] In this embodiment, the vacuum lid 1 is adapted to the opening of the container body 2, and the vacuum lid 1 can be installed on the opening of the container cavity 21 to seal the container cavity 21.

[0045] The vacuum cover 1 includes a cover body 11 and a vacuum valve 12. The cover body 11 can be made of rigid plastic. The cover body 11 is used to cover the opening of the container body 2. The cover body 11 can be in a cap-like structure. The cover body 11 includes a top cover and a side cover. The top cover is located directly above the opening of the container body 2, and the side cover wraps around the outer lateral surface of the end of the container body 2 with the opening. By adopting the cap-like cover body 11, the area where the cover body 11 wraps around the container body 2 can be increased, thereby improving the sealing effect.

[0046] In other embodiments, the cover body 11 can also be in a flat plate structure. The cover body 11 includes a top cover. An inwardly concave annular step is provided at the opening of the container body 2, and the top cover is installed on the annular step. The top cover is located directly above the opening of the container body 2, and the sealing of the opening of the container body 2 can also be achieved.

[0047] In this embodiment, the vacuum valve 12 is provided on the cover body 11. The vacuum valve 12 can be located at the center of the top cover of the cover body 11, so that when evacuating, the cover body 11 can be evenly stressed, avoiding tilting and air leakage caused by uneven stress on the cover body, that is, avoiding vacuum failure and increasing the vacuum preservation time.

[0048] In other embodiments, when the cover body 11 is made of a rigid material with relatively stable structure, the vacuum valve 12 can also be provided at other positions on the cover body 11. For example, the vacuum valve 12 is provided at a position close to the edge of the cover body 11 on the cover body 11.

[0049] In this embodiment, an installation hole 111 is provided at the middle position of the cover body 11. The cover body 11 has an inner side facing the container body 2 and an outer side facing away from the container body 2. Correspondingly, the outer side of the cover body 11 has an outer surface, and the inner side of the cover body 11 has an inner surface. The installation hole 111 penetrates the cover body 11, and the installation hole 111 extends from the outer surface of the cover body 11 to the inner surface of the cover body 11.

[0050] The vacuum valve 12 is provided on the cover body 11, and a part of the vacuum valve 12 is installed in the installation hole 111. The vacuum valve 12 includes an outer side part 121, an inner side part 122, and a connecting part 123. The outer side part 121 is located on the outer side of the cover body 11. The outer side part 121 can be in a disc shape, square shape or other shaped structures. The area of the outer side part 121 is larger than the inner hole cross-sectional area of the installation hole 111, and the outer side part 121 cannot pass through the installation hole 111. The outer side part 121 can limit the vacuum valve 12 from falling into the container cavity 21 through the installation hole 111. The outer side part 121 mainly functions to seal the installation hole 111. The outer side part 121 can be provided with a certain thickness. For example, the thickness of the outer side part 121 is greater than the thickness of the cover body 11, so that the outer side part 121 has a relatively stable structure to ensure the vacuum sealing effect.

[0051] The inner part 122 is located inside the cover body 11. The inner part 122 can be in the shape of a sheet, a disc or other structural shapes. The area of the inner part 122 is larger than the cross-sectional area of the inner hole of the mounting hole 111, and the inner part 122 cannot pass through the mounting hole 111. The inner part 122 can limit the vacuum valve 12 from directly falling out through the mounting hole 111. The outer part 121 and the inner part 122 limit the vacuum valve 12 from the outside and the inside respectively to achieve the limit installation of the vacuum valve 12. The inner part 122 mainly plays a limiting role. The outer diameter and thickness of the inner part 122 can both be set to be smaller than those of the outer part 121. One is to save the material used for the vacuum valve 12 and reduce the cost; the other is to facilitate the installation of the vacuum valve 12 on the cover body 11. When the vacuum valve 12 is installed, it can pass through the mounting hole 111 from one end of the inner part 122 with a smaller volume to achieve the installation.

[0052] The connecting part 123 is inserted into the mounting hole 111. The connecting part 123 can be in the shape of a cylinder or a polygonal column, etc. One end of the connecting part 123 is connected to the outer part 121, and the other end of the connecting part 123 is connected to the inner part 122.

[0053] In this embodiment, the vacuum valve 12 can be an integrated structure, that is, the outer part 121, the inner part 122 and the connecting part 123 are integrally formed. The vacuum valve 12 can be in contact with flexible materials such as integrally formed silica gel and rubber. The flexible material of the vacuum valve 12 enables the vacuum valve 12 to pass through the mounting hole 111 through the deformation of the inner part 122 to realize the installation of the vacuum valve 12 on the cover body 11. The flexible material of the vacuum valve 12 also enables the vacuum valve 12 to be close to the cover body 11. The vacuum valve 12 has stronger adsorption and can resist the interference of simple external forces, and has a better vacuum sealing effect.

[0054] The outer diameter of the connecting part 123 is smaller than the inner diameter of the mounting hole 111, and an air passage 124 is formed between the connecting part 123 and the mounting hole 111; and the length of the connecting part 123 is greater than the length of the mounting hole 111, that is, the distance between the outer part 121 and the inner part 122 is greater than the thickness of the cover body 11, so that air passages communicating with the air passage 124 can be formed between the outer part 121 and the inner part 122 and the cover body 11 respectively. Furthermore, when the vacuum pumping device evacuates the vacuum container, the air in the container cavity 21 can be discharged along the gap between the inner part 122 and the inner surface of the cover body 11, the air passage 124 and the gap between the outer part 121 and the outer surface of the cover body 11.

[0055] In other embodiments, the outer diameter of the connecting part 123 can also be equal to or slightly larger than the inner diameter of the mounting hole 111. A plurality of axially arranged grooves are provided on the circumferential side surface of the connecting part 123. The grooves extend from one end of the connecting part 123 to the other end. The grooves of the connecting part 123 can form the air passage 124, that is, the connecting part 123 with grooves can also provide the air passage for vacuum pumping.

[0056] In this embodiment, the surface of the outer portion 12 facing the outer surface of the cover body is a complete surface. For example, the complete surface is a circular plane or an annular plane, and this complete surface does not have a through hole extending along the axial direction of the vacuum valve, or an opening or notch penetrating the vacuum valve, or other structures that affect its complete continuity. It can be understood that the surface of the outer portion 12 facing away from the outer surface of the cover body is also a complete surface.

[0057] In the vacuum container of this embodiment, since the vacuum valve 12 is provided on the vacuum cover 1, a vacuum pumping device can be used to evacuate the vacuum container through the vacuum valve 12, without placing the entire vacuum container in the vacuum pumping device, which reduces the difficulty of vacuum pumping. The vacuum sealing operation is simple, so that household users can perform vacuum pumping operations to vacuum-preserve food. Among them, the surface of the outer portion 121 facing the cover body 11 is a complete surface, and the complete surface of the outer portion 121 contacts the outer surface of the cover body 11 in a vacuum pumping state to form a seal for the mounting hole. The complete surface of the outer portion 121 and the outer surface of the cover body 11 can form a continuous and larger-area contact seal, which can improve the sealing effect.

[0058] In one embodiment, a sealing protrusion 125 may be provided on the surface of the outer portion 121 facing the outer surface of the cover body 11. The sealing protrusion 125 surrounds the periphery of the connecting portion 123, that is, the sealing protrusion 125 surrounds the periphery of the mounting hole 111, and the inner diameter of the sealing protrusion 125 is larger than the outer diameter of the mounting hole 111. After the container cavity 21 is evacuated, under the action of negative pressure, the entire vacuum valve 12 will press down on the upper surface of the cover body 11. Among them, the sealing protrusion 125 is a flexible elastic structure. The sealing protrusion 125 contacts the upper surface of the cover body 11 and deforms to achieve vacuum sealing of the mounting hole 111. After forming the vacuum seal, under the action of negative pressure, the vacuum valve 12 will not automatically move upward to open the mounting hole 111, so that the vacuum container can vacuum-preserve food for a long time.

[0059] Among them, the sealing protrusion 125 can be an annular structure. The annular sealing protrusion 125 has a more uniform vacuum adsorption force, which can avoid air leakage caused by uneven force at one place. The outer portion 121 can also be a corresponding disc structure, so that the sealing protrusion 125 and the outer portion 121 move and deform together, which is beneficial to improving the sealing effect.

[0060] In this embodiment, the outer portion 121 contacts the outer surface of the cover body 11 through the sealing protrusion 125 to form a sealed connection, instead of the inner surface of the outer portion 121 contacting the outer surface of the cover body 11 to form a sealed connection, that is, a linear seal is formed by the sealing protrusion 125 and the outer surface of the cover body 11 instead of the surface seal formed by the inner surface of the outer portion 121 and the outer surface of the cover body 11. The linear seal has a smaller contact area than the surface seal. The linear seal is a surface contact seal with a smaller area. On the basis of ensuring sufficient sealing, the linear seal with a smaller contact area is more convenient for the user to open the vacuum valve 12, so that the user does not need to use specific or special tools. The vacuum valve 12 can be pried open or pried open by hand or with simple tools, which greatly facilitates the user's use and also avoids damage to the vacuum valve 12 or the vacuum container during the process of opening the vacuum valve 12.

[0061] In other embodiments, the sealing protrusion 125 may also be a rectangular or polygonal structure. For example, the outer portion 121 may be a square block, and the sealing protrusion 125 may be a corresponding U-shaped structure, or may achieve vacuum sealing.

[0062] In this embodiment, the sealing protrusion 125 can be arranged at a position close to the edge of the outer portion 121. Such an arrangement can, firstly, increase the distance between the sealing protrusion 125 and the connecting portion 123, lengthen the force arm of the outer portion 121 pulling the sealing protrusion 125 under the vacuum negative pressure state, and thus help improve the sealing stability of the sealing protrusion 125; secondly, the sealing protrusion 125 can be closer to the edge of the outer portion 121, so that the user can more easily contact the sealing protrusion 125, and it is convenient for the user to pry open or pry open the sealing protrusion 125 to open the vacuum valve 12.

[0063] In this embodiment, the vacuum valve 12 is provided with a sealing protrusion 125, which can improve the sealing effect of the vacuum valve 12. The sealing protrusion 125 forms a linear seal. The user can easily open the vacuum valve 12 in the vacuum state by hand. The operation is simple and is especially suitable for home users to operate by themselves.

[0064] In one embodiment, the outer portion 121, the inner portion 122 and the connecting portion 123 of the vacuum valve 12 can also be made of a hard material. One of the outer portion 121 and the inner portion 122 is an integrated structure with the connecting portion 123, and the other is fixedly connected to the connecting portion 123 by means of threaded connection, clamping, etc. Such an arrangement can also realize the installation of the vacuum valve 12 in the mounting hole 111 of the cover body 11.

[0065] Among them, the sealing protrusion 125 of the vacuum valve 12 is a flexible material structure such as silicone, rubber, etc., and a mounting groove is provided on the surface of the outer part 121 facing the cover body 11. The sealing protrusion 125 is fixed in the mounting groove of the outer part 121 by snapping, and the sealing protrusion 125 protrudes from the mounting groove of the outer part 121.

[0066] The vacuum valve 12 adopts a main body structure made of a hard material and a sealing protrusion 125 made of a flexible material, which can also achieve the installation of the vacuum valve 12 and the sealed connection between the vacuum valve 12 and the cover body 11.

[0067] In one embodiment, the sealing protrusion 125 may include one or more annular protrusions. For example, the sealing protrusion 125 includes two annular protrusions with different inner diameters, and the two annular protrusions are arranged concentrically side by side inside and outside.

[0068] The setting of multiple annular protrusions can improve the sealing effect. Compared with the direct surface contact sealing of the outer side portion 121, the sealing of multiple annular protrusions is also easier to open.

[0069] In some embodiments, the height of the connecting portion 123 is greater than the thickness of the cover body 11, and air can flow out through the first gap between the inner side portion 122 and the inner surface of the cover body 11, the second gap between the connecting portion 123 and the cover body 11, and the third gap between the outer surface of the cover body 11 and the surface of the outer side portion 121 facing the cover body 11. Thus, air can be vented 360 degrees around the vacuum valve, with a large air volume, enabling rapid evacuation of the inside of the container body 2. When in the sealed state, the surface of the outer side portion 121 facing the cover body 11 is at least partially in contact with the outer surface of the cover body 11 under the action of the external atmospheric pressure to achieve sealing.

[0070] Please refer to Figure 4 and Figure 5 , in one embodiment, the inner side portion 122 is provided with a first ventilation structure 1221. The inner side portion 122 may include a plurality of sheet-like structures distributed along the center. The inner side portion 122 is like the blade structure of a fan, and the hollow structure between two adjacent sheet-like structures forms the first ventilation structure 1221. The first ventilation structure 1221 is connected to the air passage 124, which can prevent the inner side portion 122 from being sucked and covering the mounting hole 111 during the evacuation process, ensuring the connection between the air passage 124 and the container cavity 21 during the evacuation process.

[0071] In other embodiments, the inner side portion 122 may also be other structures. For example, the inner side portion 122 is a disc structure, and the inner side portion 122 is provided with a through hole axially penetrating the inner side portion 122. The through hole forms the first ventilation structure 1221. One end of the through hole is connected to extend to the air passage 124, and the other end of the through hole extends to be connected to the container cavity 21. The first ventilation structure 1221 of this structure can also ensure the connection between the air passage 124 and the container cavity 21 during the evacuation process.

[0072] In other embodiments, the inner portion 122 is a disc structure. A groove is provided on the surface of the inner portion 122 facing the inner surface of the cover body 11, and the groove forms a first ventilation structure 1221. One end of the groove communicates with the air passage 124 extending thereto, and the other end of the groove extends to the circumferential edge of the inner portion 122 to communicate with the container cavity 21. With this structure of the first ventilation structure 1221, during the vacuum pumping process, the communication between the air passage 124 and the container cavity 21 can also be ensured.

[0073] In other embodiments, grooves or through holes may also be provided on the connecting portion 123 to form the first ventilation structure 1221. In other embodiments, grooves or through holes may also be provided on both the inner portion 122 and the connecting portion 123 simultaneously to form the first ventilation structure 1221, as long as the first ventilation structure 1211 can ensure the communication between the air passage 124 and the container cavity 21. Through the design of the first ventilation structure 1211, the increase in the ventilation volume is achieved to ensure the rapid vacuum pumping of the container body 2.

[0074] Please refer to Figure 4 and Figure 5 , in one embodiment, a second ventilation structure 1211 is provided on the surface of the outer portion 121 facing the outer surface of the cover body 11. The second ventilation structure 1211 is distributed radially along the outer portion 121. One end of the second ventilation structure 1211 extends to communicate with the air passage 124, and the other end of the second ventilation structure 1211 extends to the sealing protrusion 125. It should be noted that the second ventilation structure 1211 does not penetrate the outer portion 121 along the axial direction of the vacuum valve 12. Therefore, the surface of the outer portion 121 facing the outer surface of the cover body 11 remains a complete and continuous surface.

[0075] The second ventilation structure 1211 may include one or more ventilation grooves distributed along the center. The second ventilation structure 1211 may also be formed by a plurality of protrusions, and the second ventilation structure 1211 is located between the plurality of protrusions. The second ventilation structure 1211 forms an inwardly concave ventilation structure on the inner side surface of the outer portion 121. During the vacuum pumping process, it ensures the communication between the air passage 124 and the vacuum pumping device, and can prevent the installation hole 111 from being blocked when the sealing protrusion 125 and the cover body 11 are not completely closed and sealed.

[0076] The second ventilation structure 1211 may be axially aligned with the first ventilation structure 1221 of the inner portion 122. With this setting, the axially aligned first ventilation structure 1221 and second ventilation structure 1211 can communicate through the air passage 124, achieving a better ventilation effect.

[0077] Please refer to Figure 7 , in one embodiment, the vacuum cover 1 is provided with a date indication function to indicate the vacuum preservation date, facilitating the user to view and confirm the vacuum preservation time.

[0078] The outer diameter of the connecting portion 123 is smaller than the inner diameter of the mounting hole 111, so that the vacuum valve 12 can rotate relative to the cover body 11 in the non-evacuated state; in the evacuated state, the vacuum valve 12 is adsorbed by the vacuum negative pressure, and then the vacuum valve 12 cannot rotate relative to the cover body 11.

[0079] The cover body 11 is provided with a date mark 112. The date mark 112 can be a circularly distributed date scale. The date mark 112 can be in units of months or days, and the date mark 112 can surround the vacuum valve 12.

[0080] On the outer surface (the surface facing away from the cover body 11) of the outer portion 121 of the vacuum valve 12, there is a date pointer 1212. The date pointer 1212 can be a convex strip or a groove arranged radially along the outer portion 121, or the date pointer 1212 can be a sticker or a sprayed pattern arranged radially along the outer portion 121.

[0081] When performing vacuum preservation on the vacuum container, the user can first rotate the vacuum valve 12 relative to the cover body 11 until the date pointer 1212 aligns with the preservation date of the current day in the date mark 112, and then perform a vacuum pumping operation on the vacuum valve 12 through a vacuum pumping device. After completing the vacuum pumping operation, the vacuum valve 12 cannot rotate relative to the cover body 11, so that the vacuum preservation date indicated by the date pointer 1212 and the date mark 112 is fixed.

[0082] In other embodiments, the date mark 112 is arranged on the vacuum valve 12, and the date pointer 1212 is arranged on the cover body 11, which can also realize indicating the vacuum preservation date.

[0083] In other embodiments, a separate date dial can also be provided on the cover body 11, and the user can adjust the indicated date of the date dial by means of a knob or the like, which can also realize indicating the vacuum preservation date.

[0084] Please refer to Figures 3 to 6 , in one embodiment, the outer portion 121 of the vacuum valve 12 is provided with an indicating diaphragm 1213. The indicating diaphragm 1213 can be in the middle of the outer surface of the outer portion 121, and the indicating diaphragm 1213 is integrally formed with the outer portion 121.

[0085] The vacuum valve 12 is provided with a connection hole 126. The connection hole 126 penetrates through the inner portion 122 and the connection portion 123. One end of the connection hole 126 extends to the inner surface of the indicating diaphragm 1213, and the other end of the connection hole 126 extends to communicate with the container cavity 21. The setting of the connection hole 126 makes the outside of the indicating diaphragm 1213 be the atmospheric pressure, and the inside of the indicating diaphragm 1213 be the air pressure of the container cavity 21. When the vacuum container is not evacuated, the indicating diaphragm 1213 is in a convex or flat state; when the vacuum container is evacuated, the indicating diaphragm 1213 is in a concave state.

[0086] Indicating the setting of the indicating diaphragm 1213, the user can judge whether the vacuum state in the vacuum container fails by observing the state of the indicating diaphragm 1213. For example, after the vacuum container evacuates the air to preserve food, if the indicating diaphragm 1213 is in a concave state, the vacuum in the vacuum container has not failed and can continue to be vacuum-preserved; if the indicating diaphragm 1213 is in a convex or flat state, the vacuum in the vacuum container has failed, and the user needs to process the food in time or evacuate the air again for preservation.

[0087] In one embodiment, a vacuum lid is provided. This vacuum lid includes the vacuum lid 1 in any of the above embodiments.

[0088] The vacuum lid 1 of this embodiment can be used as a standard part to fit container bodies 2 of different volume models. This vacuum lid 1 can also be used as a specific part to only fit the corresponding model of container body 2.

[0089] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention pertains, based on the idea of the present invention, several simple deductions, deformations or substitutions can also be made.

Claims

1. A vacuum cover for a vacuum container, characterized in that, Comprising: A lid for vacuum-sealing a container body, the lid being provided with a mounting hole penetrating through the lid; A vacuum valve, the vacuum valve being disposed on the lid, the vacuum valve including an outer portion, an inner portion, and a connecting portion, the outer portion being located on the outer side of the lid for facing away from the container body, the inner portion being located on the inner side of the lid for facing the container body, the connecting portion being inserted through the mounting hole, one end of the connecting portion being connected to the outer portion, and the other end of the connecting portion being connected to the inner portion; Wherein, the surface of the outer portion facing the lid is a complete surface, and at least partially contacts the outer surface of the lid in a vacuum state to form a seal for the mounting hole.

2. The vacuum cover according to claim 1, characterized in that, The surface of the outer portion facing the lid is provided with a sealing protrusion, the sealing protrusion surrounding the periphery of the connecting portion; the sealing protrusion contacts the outer surface of the lid in a vacuum state to form a seal for the mounting hole.

3. The vacuum cover according to claim 2, characterized in that, The sealing protrusion includes one or more annular protrusions, the inner diameter of the annular protrusion being greater than the inner diameter of the mounting hole.

4. The vacuum cover according to claim 2 or 3, characterized in that, The sealing protrusion is a flexible material structure, and / or, the vacuum valve is an integrated flexible material structure.

5. The vacuum cover according to claim 2, wherein, The inner diameter of the connecting portion is smaller than the inner diameter of the mounting hole, the length of the connecting portion is greater than the length of the mounting hole, and an air passage is formed between the connecting portion and the mounting hole.

6. The vacuum cover according to claim 5, wherein, The inner portion and / or the connecting portion is provided with a first ventilation structure, one end of the first ventilation structure communicating with the air passage, and the other end of the first ventilation structure extending to the side of the inner portion facing away from the lid, or the other end of the first ventilation structure extending to the circumferential edge of the inner portion.

7. The vacuum cover according to claim 6, characterized in that, The inner portion includes a plurality of sheet-like structures distributed in a central array, and the hollowed-out area between two adjacent sheet-like structures forms the first ventilation structure.

8. The vacuum cover according to claim 5, wherein The surface of the outer portion facing the lid is provided with a second ventilation structure, one end of the second ventilation structure extending to communicate with the air passage, and the other end of the second ventilation structure extending to the sealing protrusion.

9. The vacuum cover according to claim 8, characterized in that, The second ventilation structure includes one or more ventilation grooves distributed along the center.

10. A vacuum container, characterized in that, Comprising: A container body, the container body having a container cavity for accommodating food, and an opening being provided at one end of the container cavity; The vacuum lid according to any one of claims 1 to 9, the vacuum lid being used to cover the container body to seal the opening.

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