A vacuum sealable storage tank and method of use thereof

Abstract

The present application relates to the technical field of vacuum storage tank, aiming at solving the problem that the food preservation period cannot be prolonged in the prior art, and providing a sealable vacuum storage tank and a use method thereof, which comprises a tank body and a cover plate, the cover plate is clamped with an outer cover, a pressure disc is arranged between the cover plate and the outer cover, the top end of the pressure disc penetrates through the cover plate and slides axially along the cover plate, a plurality of third exhaust grooves are arranged in the circumferential direction of the inner side of the cover plate, an inner disc is clamped to the lower part of the pressure disc, and a plurality of second exhaust grooves are arranged in the circumferential direction of the pressure disc; a first mounting hole is arranged at the top of the inner disc, a first one-way valve is mounted in the first mounting hole, and a plurality of first exhaust grooves are arranged in the first mounting hole; a second mounting hole is arranged at the center of the outer cover, a second one-way valve is mounted in the second mounting hole, and a plurality of fourth exhaust grooves are arranged in the second mounting hole, a first spring is arranged at the center of the outer cover, and the other end of the first spring abuts against the inner disc; and the lower segment of the outer cover is sealingly connected with the tank body. The present application has the beneficial effects of simple structure, simple operation, reduced oxygen content in the tank body and prolonged preservation period of the inner food.

Description

Technical Field

[0001] This invention relates to the field of vacuum storage container technology, and more specifically, to a vacuum-sealed storage container and its method of use. Background Technology

[0002] Currently, refrigerators are the primary means of preserving food, vegetables, and fruits. However, food stored in refrigerators cannot be moved around. When going out, due to the high oxygen content in the air, stored food is prone to spoilage. A low-oxygen environment is needed to ensure the food is kept fresh and to extend the shelf life of the food. Therefore, there is an urgent need for a device that can preserve food in a low-oxygen environment. Summary of the Invention

[0003] The present invention aims to provide a vacuum-sealed storage container and its usage method to solve the problem that the existing technology cannot extend the shelf life of food and other items.

[0004] The embodiments of the present invention are implemented as follows:

[0005] This invention provides a vacuum-sealed storage container, which includes a container body;

[0006] The top of the aforementioned tank is provided with a top cover assembly, which is sealed to the top of the aforementioned tank.

[0007] The aforementioned upper cover assembly has a cover plate, and an outer cover is provided at the lower part of the cover plate. The cover plate is snapped to the outer cover. A pressure plate is provided between the cover plate and the outer cover. The top of the pressure plate passes through the cover plate and is slidably connected along the axial direction of the cover plate. The bottom of the pressure plate is limited inside the cover plate. A plurality of third exhaust grooves are provided in the circumferential direction of the contact surface between the inner side of the cover plate and the pressure plate. An inner plate is provided at the lower part of the pressure plate. The inner plate is snapped inside the pressure plate. A plurality of second exhaust grooves are evenly distributed in the circumferential direction of the contact surface between the pressure plate and the inner plate. The plurality of second exhaust grooves pass through the plurality of third exhaust grooves.

[0008] The inner disc has a first mounting hole at the top center, and multiple first exhaust grooves are evenly distributed around the bottom circumference of the first mounting hole. A first one-way valve is installed inside the first mounting hole, and the lower outer wall of the inner disc can slide against the inner wall of the inner ring of the outer cover.

[0009] The outer cover has an inner ring seat at the bottom center of the inner ring, and a second mounting hole is provided at the center of the inner ring seat. Multiple fourth exhaust grooves are evenly distributed in the bottom circumferential direction of the second mounting hole. A second one-way valve is installed inside the second mounting hole. A first spring is sleeved on the inner ring seat, and the end of the first spring away from the inner ring seat elastically abuts against the inner top surface of the inner plate.

[0010] The lower section of the outer cover is sealed to the top of the tank.

[0011] The vacuum-sealed storage container disclosed in this embodiment, by connecting the first and second one-way valves in series and cooperating with the pressure plate and the first spring, facilitates the extraction of air (oxygen) from the inside of the container, reducing the oxygen content inside the container, thereby improving the shelf life of the contents. This results in a vacuum-sealed storage container with a simple structure, easy operation, reduced oxygen content inside the container, achieving a low-pressure, low-oxygen state inside the container, realizing vacuum preservation of the contents, and thus extending the shelf life of the contents.

[0012] Optionally: the inner ring of the cover plate is provided with a plurality of locking holes evenly distributed in the circumferential direction, and the outer ring of the outer cover is provided with a plurality of protrusions evenly distributed in the circumferential direction, and the plurality of locking holes of the cover plate are connected to the plurality of protrusions of the outer cover.

[0013] With this configuration, the cover plate and the outer cover are connected by several of the aforementioned holes and protrusions, thus achieving a snap-fit ​​connection and improving installation efficiency.

[0014] Optionally: the inner cylindrical surface of the pressure plate is provided with a plurality of first fastening teeth evenly distributed in the circumferential direction, and the outer cylindrical surface of the inner plate is provided with first fastening holes corresponding to the first fastening teeth, and the plurality of the first fastening teeth are fastened in the plurality of the first fastening holes.

[0015] This configuration allows the pressure plate and the inner plate to move synchronously, facilitating the discharge of gas from inside the tank.

[0016] Optionally: The lower end of the outer cylindrical surface of the inner disc is provided with a first annular mounting groove, and a first O-ring is fitted inside the first annular mounting groove. The outer wall of the first O-ring is slidably fitted to the inner wall of the inner ring of the outer cover.

[0017] With this configuration, the first O-ring can provide a sealing effect, which facilitates the separation of the first cavity and the second cavity, thereby enabling the first check valve and the second check valve to operate separately and helping the storage tank maintain a vacuum.

[0018] Optionally: An L-shaped silicone sealing ring is fitted onto the lower outer cylindrical surface of the outer cover, the short side of the L-shaped silicone sealing ring abutting against the top surface of the lower outer cylindrical surface of the outer cover, and the long side of the L-shaped silicone sealing ring abutting against the lower outer cylindrical surface of the outer cover.

[0019] The L-shaped silicone sealing ring is sealed to the top of the tank.

[0020] With this configuration, when the aforementioned top cover assembly is assembled with the aforementioned tank body, the inner surface of the aforementioned tank body is sealed by pressing the aforementioned L-shaped silicone sealing ring.

[0021] Optionally, the long outer wall of the aforementioned silicone sealing ring is provided with multiple sealing rings radially, and the multiple sealing rings are tightly fitted to the inner wall of the top of the aforementioned tank.

[0022] With this configuration, multiple sealing rings can improve the sealing between the silicone sealing ring and the inner wall of the tank, effectively preventing air from entering the interior of the tank and facilitating the realization of a vacuum in the storage tank.

[0023] Optionally: The cover plate and the outer cover are sequentially provided with a coaxial third mounting hole and a stepped hole in the axial direction. A second spring is provided on the step of the stepped hole. A pressure relief rod is sleeved inside the second spring. The end of the pressure relief rod away from the outer cover has an enlarged end. The end of the second spring away from the outer cover abuts against the inner side of the enlarged end. The end of the pressure relief rod away from the cover plate passes through the stepped hole.

[0024] The pressure relief rod has a second annular mounting groove on the outer wall of one end near the tank body. A second O-ring is fitted inside the second annular mounting groove. A first sealing surface is provided at the opening of the stepped hole of the outer cover near the end of the tank body. The second O-ring fits tightly against the first sealing surface.

[0025] With this configuration, when the storage container does not need to maintain a vacuum or when it is necessary to remove items from the container, pressing the enlarged end of the pressure relief rod causes the second spring to contract, disengaging the second O-ring seal of the pressure relief rod from the first sealing surface. At this time, external air enters the interior of the container through the third mounting hole and the stepped hole, thus removing the vacuum from the interior of the container and facilitating the removal of items. When the storage container requires a vacuum, releasing the pressure relief rod causes the second spring to lift the pressure relief rod, pressing the second O-ring seal tightly against the first sealing surface. The channels of the third mounting hole and the stepped hole are closed, preventing gas from flowing out of the container and facilitating the achievement of a vacuum in the storage container.

[0026] Optionally: the outer cover is located at one end near the inside of the tank and is attached to the inner cover and the decorative cover. The inner cover is snapped onto the outer wall of the inner ring of the outer cover. The bottom surface of the decorative cover has several through holes. The decorative cover is detachably connected to the bottom end of the second mounting hole.

[0027] With this design, the inner cover is not only neat and aesthetically pleasing, but also provides structural support for the outer cover. This facilitates the long side of the silicone sealing ring being pressed against the inner wall of the can, while the through hole of the decorative cover allows gas inside the can to flow into the second mounting hole, thereby achieving vacuum exhaust of the can and also serving an aesthetic purpose.

[0028] Optionally: a first cavity is provided between the pressure plate and the inner plate, a second cavity is provided between the inner plate and the outer cover, and a third cavity is provided between the outer cover and the interior of the tank.

[0029] With this configuration, the first cavity, the second cavity, and the third cavity are designed to work in conjunction with the opening and closing of the first check valve and the second check valve, so that the air inside the third cavity can be discharged into the second cavity and the first cavity, and finally out of the storage tank, thereby achieving the sealing of the storage tank.

[0030] In one embodiment of this example: a method of using a vacuum-sealed storage container is also provided. First, in the initial state, the pressure plate and the inner plate protrude from the surface of the cover plate under the action of the first spring. The first one-way valve and the second one-way valve are both in the closed state under the action of gravity, and the third cavity is in a relatively sealed state.

[0031] Secondly, when the pressure plate is pressed down, the volume of the second cavity gradually decreases. The second one-way valve is closed under the action of the compressed gas inside the second cavity, and the first one-way valve opens. As the pressure plate is pressed down continuously, the air inside the second cavity is discharged into the interior of the first cavity through the first exhaust groove provided at the lower end of the first mounting hole, and then discharged to the outside of the sealed tank through the second exhaust groove and the third exhaust groove.

[0032] Then, when the lower end face of the inner plate contacts the outer cover, the pressure plate presses down to the stop position, and the first spring is in a compressed state. At this time, the pressure plate is released, and the pressure plate and the inner plate move upward under the rebound action of the first spring. The storage tank enters the rebound and evacuation state. As the pressure plate and the inner cover rebound and rise, the volume of the second cavity gradually increases. The first one-way valve enters the closed state, and the second one-way valve enters the open state under the vacuum adsorption action of the gas inside the second cavity. The gas inside the third cavity enters the interior of the second cavity through the fourth exhaust groove and the second one-way valve. When the pressure plate contacts the cover plate, the rebound and evacuation reaches the stop position.

[0033] Finally, by repeatedly performing two cycles of compression and exhaust and rebound and extraction, the air (oxygen) inside the third chamber is drawn into the second chamber through the second one-way valve, enters the first chamber through the first one-way valve, and is discharged from the storage tank through the second and third exhaust channels. When the inside of the tank is in a vacuum state, both the first and second one-way valves are closed.

[0034] In summary, the vacuum-sealed storage container and its usage method disclosed in this invention have the beneficial effects of simple structure, simple operation, reduced oxygen content inside the container, low-pressure and low-oxygen state inside the container, vacuum preservation of the contents, and thus extended preservation period of the contents. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the exploded structure of a vacuum-sealed storage container according to an embodiment of the present invention.

[0037] Figure 2 This is a first cross-sectional view of a vacuum-sealed storage container according to an embodiment of the present invention;

[0038] Figure 3 This is a second cross-sectional view of a vacuum-sealed storage container according to an embodiment of the present invention;

[0039] Figure 4 This is a third cross-sectional view of a vacuum-sealed storage container according to an embodiment of the present invention;

[0040] Figure 5 This is an embodiment of the present invention. Figure 4 Enlarged view of point A in the middle;

[0041] Figure 6 This is a first-view structural diagram of the cover plate in an embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the cover plate from a second perspective in an embodiment of the present invention;

[0043] Figure 8 This is a first-view structural diagram of the pressure plate in an embodiment of the present invention;

[0044] Figure 9This is a schematic diagram of the pressure plate structure from a second perspective in an embodiment of the present invention;

[0045] Figure 10 This is a schematic diagram of the inner disk structure in an embodiment of the present invention;

[0046] Figure 11 This is a schematic diagram of the pressure relief rod in an embodiment of the present invention;

[0047] Figure 12 This is a schematic diagram of the structure of the decorative cover in an embodiment of the present invention;

[0048] Figure 13 This is a schematic diagram of the initial state structure of a vacuum-sealed storage container according to an embodiment of the present invention.

[0049] Figure 14 This is a schematic diagram of the compressed exhaust state structure of a vacuum-sealed storage tank according to an embodiment of the present invention.

[0050] Figure 15 This is a schematic diagram of the rebound evacuation state structure of a vacuum-sealed storage container according to an embodiment of the present invention.

[0051] Figure 16 This is a schematic diagram of the sealed storage state structure of a vacuum-sealed storage container according to an embodiment of the present invention.

[0052] Icons: 1-Tank body, 2-Upper cover assembly, 3-Cover plate, 4-Outer cover, 5-Pressure plate, 6-Third vent groove, 7-Inner plate, 8-Second vent groove, 9-First mounting hole, 10-First vent groove, 11-First check valve, 12-Inner ring seat, 13-Second mounting hole, 14-Fourth vent groove, 15-Second check valve, 16-First spring, 17-Snap hole, 18-Protrusion, 19-First snap tooth, 20-First snap hole, 21 - First annular mounting groove, 22- First O-ring seal, 23- L-shaped silicone seal, 24- Sealing ring, 25- Third mounting hole, 26- Stepped hole, 27- Second spring, 28- Pressure relief rod, 29- Enlarged end, 30- Second annular mounting groove, 31- Second O-ring seal, 32- First sealing surface, 33- Inner cover, 34- Decorative cover, 35- Through hole, 36- First cavity, 37- Second cavity, 38- Third cavity. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0054] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0055] Example

[0056] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16 This embodiment proposes a vacuum-sealed storage container, including a container body 1;

[0057] The top of the tank body 1 is provided with a top cover assembly 2, which is sealed to the top of the tank body 1.

[0058] The upper cover assembly 2 has a cover plate 3, and an outer cover 4 is provided at the lower part of the cover plate 3. The cover plate 3 is snapped to the outer cover 4. A pressure plate 5 is provided between the cover plate 3 and the outer cover 4. The top of the pressure plate 5 passes through the cover plate 3 and slides along the axial direction of the cover plate 3. The bottom of the pressure plate 5 is limited inside the cover plate 3. Multiple third exhaust grooves 6 are provided in the circumferential direction of the contact surface between the inner side of the cover plate 3 and the pressure plate 5. An inner plate 7 is provided at the lower part of the pressure plate 5. The inner plate 7 is snapped inside the pressure plate 5. Multiple second exhaust grooves 8 are evenly distributed in the circumferential direction of the contact surface between the pressure plate 5 and the inner plate 7. The multiple second exhaust grooves 8 pass through the multiple third exhaust grooves 6.

[0059] The inner plate 7 has a first mounting hole 9 at the top center, and multiple first exhaust grooves 10 are evenly distributed around the bottom circumference of the first mounting hole 9. A first one-way valve 11 is installed inside the first mounting hole 9. The lower outer wall of the inner plate 7 can slide against the inner wall of the inner ring of the outer cover 4.

[0060] The outer cover 4 has an inner ring seat 12 at the bottom center of the inner ring. A second mounting hole 13 is provided at the center of the inner ring seat 12. Multiple fourth exhaust grooves 14 are evenly distributed in the bottom circumferential direction of the second mounting hole 13. A second one-way valve 15 is installed inside the second mounting hole 13. A first spring 16 is sleeved on the inner ring seat 12. The end of the first spring 16 away from the inner ring seat 12 elastically abuts against the inner top surface of the inner plate 7.

[0061] The lower section of the outer cover 4 is sealed and connected to the top of the tank body 1.

[0062] The vacuum-sealed storage container disclosed in this embodiment, by connecting the first one-way valve 11 and the second one-way valve 15 in series, and cooperating with the pressure plate 5 and the first spring 16, facilitates the extraction of air (oxygen) from the inside of the container 1, reducing the oxygen content inside the container 1, thereby improving the preservation period of the items. As a result, the vacuum-sealed storage container has the beneficial effects of simple structure, simple operation, reduced oxygen content inside the container 1, achieving a low-pressure, low-oxygen state inside the storage container, realizing vacuum preservation of the items inside the container 1, and thus extending the preservation period of the items inside.

[0063] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16 The inner ring of the cover plate 3 is provided with a number of locking holes 17 evenly distributed in the circumferential direction, and the outer ring of the outer cover 4 is provided with a number of protrusions 18 evenly distributed in the circumferential direction. The locking holes 17 of the cover plate 3 are connected to the protrusions 18 of the outer cover 4. In this way, the cover plate 3 and the outer cover 4 are connected by the locking holes 17 and the protrusions 18, so that the cover plate 3 and the outer cover 4 are snapped together, which improves the installation efficiency.

[0064] The inner cylindrical surface of the pressure plate 5 is provided with a number of first buckle teeth 19 evenly distributed in the circumferential direction, and the outer cylindrical surface of the inner plate 7 is provided with first buckle holes 20 corresponding to the first buckle teeth 19. The number of first buckle teeth 19 are engaged in the number of first buckle holes 20, so that the pressure plate 5 and the inner plate 7 can move synchronously, which facilitates the discharge of gas inside the tank 1.

[0065] The lower end of the outer cylindrical surface of the inner plate 7 is provided with a first annular mounting groove 21. A first O-ring 22 is fitted inside the first annular mounting groove 21. The outer wall of the first O-ring 22 can slide against the inner wall of the inner ring of the outer cover 4. The first O-ring 22 can achieve a sealing effect, which facilitates the separation of the first cavity 36 and the second cavity, thereby facilitating the operation of the first one-way valve 11 and the second one-way valve 15 respectively, and helping the storage tank maintain a vacuum.

[0066] An L-shaped silicone sealing ring 23 is fitted onto the lower cylindrical surface of the outer cover 4. The short side of the L-shaped silicone sealing ring 23 abuts against the top surface of the lower cylindrical surface of the outer cover 4, and the long side of the L-shaped silicone sealing ring 23 abuts against the lower cylindrical surface of the outer cover 4. The L-shaped silicone sealing ring 23 is sealed to the top of the tank body 1. When the upper cover assembly 2 is assembled with the tank body 1, the inner surface of the tank body 1 is sealed by pressing the L-shaped silicone sealing ring 23.

[0067] Multiple sealing rings 24 are provided radially on the long outer wall of the silicone sealing ring. The multiple sealing rings 24 are tightly fitted to the inner wall of the top of the tank 1. The multiple sealing rings 24 can improve the sealing between the silicone sealing ring and the inner wall of the tank 1, effectively preventing air from entering the interior of the tank 1, and facilitating the realization of vacuum in the storage tank.

[0068] The cover plate 3 and the outer cover 4 are sequentially provided with a coaxial third mounting hole 25 and a stepped hole 26. A second spring 27 is provided on the step of the stepped hole 26. A pressure relief rod 28 is sleeved inside the second spring 27. The end of the pressure relief rod 28 away from the outer cover 4 has an enlarged end 29. The end of the second spring 27 away from the outer cover 4 abuts against the inner side of the enlarged end 29. The end of the pressure relief rod 28 away from the cover plate 3 passes through the stepped hole 26. The outer wall of the end of the pressure relief rod 28 near the tank body 1 has a second annular mounting groove 30. A second O-ring seal 31 is sleeved in the second annular mounting groove 30. A first sealing surface 32 is provided at the opening of the stepped hole 26 of the outer cover 4 near the tank body 1. The second O-ring seal 31 fits tightly against the first sealing surface 32. 2. When the storage tank does not need to maintain a vacuum or when it is necessary to remove items from the tank 1, pressing the enlarged end 29 of the pressure relief rod 28 causes the second spring 27 to contract, causing the second O-ring seal 31 of the pressure relief rod 28 to leave the first sealing surface 32. At this time, external air enters the interior of the tank 1 through the third mounting hole 25 and the stepped hole 26, so that the interior of the tank 1 is no longer kept in a vacuum, making it easier to remove items. When the storage tank needs a vacuum, releasing the pressure relief rod 28 causes the second spring 27 to lift the pressure relief rod 28, and the second O-ring seal 31 to press tightly against the first sealing surface 32. The channels of the third mounting hole 25 and the stepped hole 26 are closed, and the gas inside the tank 1 cannot flow out through the third mounting hole 25 and the stepped hole 26, making it easier for the storage tank to achieve a vacuum.

[0069] The outer cover 4 is located at one end near the inside of the tank 1, which is connected to the inner cover 33 and the decorative cover 34. The inner cover 33 is snapped onto the outer wall of the inner ring of the outer cover 4. The bottom surface of the decorative cover 34 has several through holes 35. The decorative cover 34 is detachably connected to the bottom end of the second mounting hole 13. The inner cover 33 is not only neat and beautiful, but also provides structural support for the outer cover 4, which is conducive to the long side of the silicone sealing ring being pressed against the inner wall of the tank 1. The through holes 35 of the decorative cover 34 facilitate the flow of gas inside the tank 1 into the second mounting hole 13, thereby realizing the vacuum exhaust of the tank 1, while also having an aesthetic function.

[0070] There is a first cavity 36 between the pressure plate 5 and the inner plate 7, a second cavity 37 between the inner plate 7 and the outer cover 4, and a third cavity 38 between the outer cover 4 and the interior of the tank 1. The first cavity 36, the second cavity 37 and the third cavity 38 are configured to cooperate with the opening and closing of the first one-way valve 11 and the second one-way valve 15 to facilitate the exhaust of air inside the third cavity 38 into the second cavity 37 and the first cavity 36, and finally out of the storage tank, thereby achieving the sealing of the storage tank.

[0071] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16 In one embodiment of this example: a method of using a vacuum-sealed storage container is also provided. First, in the initial state, the pressure plate 5 and the inner plate 7 protrude from the surface of the cover plate 3 under the action of the first spring 16. The first one-way valve 11 and the second one-way valve 15 are both in the closed state under the action of gravity, and the third cavity 38 is in a relatively sealed state.

[0072] Secondly, when the pressure plate 5 is pressed down, the volume of the second cavity 37 gradually decreases. The second one-way valve 15 is closed under the action of the compressed gas inside the second cavity 37, and the first one-way valve 11 is opened. As the pressure plate 5 is pressed down continuously, the air inside the second cavity 37 is discharged into the interior of the first cavity 36 through the first exhaust groove 10 provided at the lower end of the first mounting hole 9, and then discharged to the outside of the sealed tank through the second exhaust groove 8 and the third exhaust groove 6.

[0073] Then, when the lower end face of the inner plate 7 contacts the outer cover 4, the pressure plate 5 presses down to the stop position, and the first spring 16 is in a compressed state. At this time, the pressure plate 5 is released, and the pressure plate 5 and the inner plate 7 move upward under the rebound action of the first spring 16. The storage tank enters the rebound and evacuation state. As the pressure plate 5 and the inner cover 33 rebound and rise, the volume of the second cavity 37 gradually increases. The first one-way valve 11 enters the closed state, and the second one-way valve 15 enters the open state under the vacuum adsorption action of the gas inside the second cavity 37. The gas inside the third cavity 38 enters the interior of the second cavity 37 through the fourth exhaust groove 14 and the second one-way valve 15. When the pressure plate 5 contacts the cover plate 3, the rebound and evacuation reaches the stop position.

[0074] Finally, through repeated compression and exhaust and rebound evacuation cycles, the air (oxygen) inside the third chamber 38 is drawn into the second chamber 37 through the second one-way valve 15, enters the first chamber 36 through the first one-way valve 11, and is discharged from the storage tank through the second exhaust channel 8 and the third exhaust channel 6. When the tank 1 is in a vacuum state, both the first one-way valve 11 and the second one-way valve 15 are closed.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vacuum-sealed storage container, characterized in that: Including the tank body (1); The top of the tank (1) is provided with a top cover assembly (2), which is sealed to the top of the tank (1); The upper cover assembly (2) has a cover plate (3), and an outer cover (4) is provided at the lower part of the cover plate (3). The cover plate (3) is snapped to the outer cover (4). A pressure plate (5) is provided between the cover plate (3) and the outer cover (4). The top end of the pressure plate (5) passes through the cover plate (3) and slides along the axial direction of the cover plate (3). The bottom end of the pressure plate (5) is limited inside the cover plate (3). A plurality of third exhaust grooves (6) are provided in the circumferential direction of the contact surface between the inner side of the cover plate (3) and the pressure plate (5). An inner plate (7) is provided at the lower part of the pressure plate (5). The inner plate (7) is snapped inside the pressure plate (5). A plurality of second exhaust grooves (8) are evenly distributed in the circumferential direction of the contact surface between the pressure plate (5) and the inner plate (7). The plurality of second exhaust grooves (8) pass through the plurality of third exhaust grooves (6). The inner plate (7) has a first mounting hole (9) at the top center. Multiple first exhaust grooves (10) are evenly distributed around the bottom circumference of the first mounting hole (9). A first one-way valve (11) is installed inside the first mounting hole (9). The lower outer wall of the inner plate (7) is slidably attached to the inner wall of the inner ring of the outer cover (4). The outer cover (4) has an inner ring seat (12) at the bottom center of the inner ring. The inner ring seat (12) has a second mounting hole (13) at its center. The bottom circumferential direction of the second mounting hole (13) is provided with a plurality of fourth exhaust grooves (14). The second mounting hole (13) is installed with a second one-way valve (15). The inner ring seat (12) is fitted with a first spring (16). The end of the first spring (16) away from the inner ring seat (12) elastically abuts against the inner top surface of the inner plate (7). The lower section of the outer cover (4) is sealed to the top of the tank body (1); The inner cylindrical surface of the pressure plate (5) is provided with a plurality of first buckle teeth (19) evenly distributed in the circumferential direction, and the outer cylindrical surface of the inner plate (7) is provided with first buckle holes (20) corresponding to the first buckle teeth (19), and the plurality of first buckle teeth (19) are snapped into the plurality of first buckle holes (20). The lower end of the outer cylindrical surface of the inner plate (7) is provided with a first annular mounting groove (21), and a first O-ring seal (22) is fitted inside the first annular mounting groove (21). The outer wall of the first O-ring seal (22) is slidably attached to the inner wall of the inner ring of the outer cover (4). An L-shaped silicone sealing ring (23) is fitted on the lower outer cylindrical surface of the outer cover (4). The short side of the L-shaped silicone sealing ring (23) abuts against the top surface of the lower outer cylinder of the outer cover (4), and the long side of the L-shaped silicone sealing ring (23) abuts against the lower outer cylindrical surface of the outer cover (4). The L-shaped silicone sealing ring (23) is sealed to the top of the tank (1).

2. The vacuum-sealed storage container according to claim 1, characterized in that: The inner ring of the cover plate (3) is provided with a plurality of locking holes (17) evenly distributed in the circumferential direction, and the outer ring of the outer cover (4) is provided with a plurality of protrusions (18) evenly distributed in the circumferential direction. The plurality of locking holes (17) of the cover plate (3) are connected to the plurality of protrusions (18) of the outer cover (4).

3. A vacuum-sealed storage container according to claim 1, characterized in that: The long outer wall of the silicone sealing ring is provided with multiple sealing rings (24) in the radial direction, and the multiple sealing rings (24) are tightly attached to the inner wall of the top of the tank (1).

4. A vacuum-sealed storage container according to claim 1, characterized in that: The cover plate (3) and the outer cover (4) are provided with a coaxial third mounting hole (25) and a stepped hole (26) in sequence along their axial direction. A second spring (27) is provided on the step of the stepped hole (26). A pressure relief rod (28) is sleeved inside the second spring (27). The end of the pressure relief rod (28) away from the outer cover (4) has an enlarged end (29). The end of the second spring (27) away from the outer cover (4) abuts against the inner side of the enlarged end (29). The end of the pressure relief rod (28) away from the cover plate (3) passes through the stepped hole (26). The pressure relief rod (28) has a second annular mounting groove (30) on the outer wall of one end near the tank body (1). A second O-ring seal (31) is fitted inside the second annular mounting groove (30). A first sealing surface (32) is provided at the opening of the stepped hole (26) of the outer cover (4) near the end of the tank body (1). The second O-ring seal (31) fits tightly against the first sealing surface (32).

5. A vacuum-sealed storage container according to claim 1, characterized in that: The outer cover (4) is located at one end near the inside of the tank body (1) and is provided on the inner cover (33) and the decorative cover (34). The inner cover (33) is snapped onto the outer wall of the inner ring of the outer cover (4). The bottom surface of the decorative cover (34) is provided with several through holes (35). The decorative cover (34) is detachably connected to the bottom end of the second mounting hole (13).

6. A vacuum-sealed storage container according to claim 5, characterized in that: There is a first cavity (36) between the pressure plate (5) and the inner plate (7), a second cavity (37) between the inner plate (7) and the outer cover (4), and a third cavity (38) between the outer cover (4) and the interior of the tank (1).

7. The method of using the vacuum-sealed storage container according to claim 6, characterized in that: First, in the initial state, the pressure plate (5) and the inner plate (7) protrude from the surface of the cover plate (3) under the action of the first spring (16), the first one-way valve (11) and the second one-way valve (15) are both in the closed state under the action of gravity, and the third cavity (38) is in a relatively sealed state. Secondly, when the pressure plate (5) is pressed down, the volume of the second cavity (37) gradually decreases. The second one-way valve (15) is closed under the action of the compressed gas inside the second cavity (37), and the first one-way valve (11) opens. As the pressure plate (5) is pressed down continuously, the air inside the second cavity (37) is discharged into the interior of the first cavity (36) through the first exhaust groove (10) provided at the lower end of the first mounting hole (9), and then discharged to the outside of the sealed tank through the second exhaust groove (8) and the third exhaust groove (6). Then, when the lower end face of the inner plate (7) contacts the outer cover (4), the pressure plate (5) presses down to the stop position, and the first spring (16) is in a compressed state. At this time, the pressure plate (5) is released, and the pressure plate (5) and the inner plate (7) move upward under the rebound action of the first spring (16). The storage tank enters the rebound and evacuation state. As the pressure plate (5) and the inner cover (33) rebound and rise, the volume of the second cavity (37) gradually increases. The first one-way valve (11) enters the closed state, and the second one-way valve (15) enters the open state under the vacuum adsorption action of the gas inside the second cavity (37). The gas inside the third cavity (38) enters the interior of the second cavity (37) through the fourth exhaust groove (14) and the second one-way valve (15). When the pressure plate (5) contacts the cover plate (3), the rebound and evacuation reaches the stop position. Finally, by repeatedly performing two cycles of compression and exhaust and rebound and extraction, the air inside the third chamber (38) is drawn into the second chamber (37) through the second one-way valve (15), enters the first chamber (36) through the first one-way valve (11), and is discharged from the storage tank through the second exhaust groove (8) and the third exhaust groove (6). When the tank (1) is in a vacuum state, both the first one-way valve (11) and the second one-way valve (15) are closed.

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