Sealed container

Abstract

The invention belongs to the technical field of food containers, and particularly relates to a sealing container which comprises a sealing container body, a cover and a sealing piece located between the opening end of the sealing container body and the cover. The bottom face of the sealing piece is provided with a second annular sealing face which can be tightly attached to the first annular sealing face for sealing, and the sealing container body and the sealing piece are both made of any one of ceramic, high borosilicate glass and stainless steel. Ceramic, high borosilicate glass or stainless steel which is not prone to aging is selected as a manufacturing material of the sealing container body and the sealing piece, and meanwhile the sealing container body and the sealing piece are directly and tightly sealed through the sealing face. The stored food can be completely prevented from being in contact with other parts made of plastic, silica gel or PE materials which are prone to aging to generate micro-plastic, and pollution of micro-plastic particles is avoided.

Description

Technical Field

[0001] This invention belongs to the field of food container technology, specifically relating to a sealed container that is suitable for ensuring the sealing effect of the container while preventing microplastic particles generated during aging from contaminating the food stored inside the container. Background Technology

[0002] Currently, cups, bottles, and food storage containers made of ceramic, borosilicate glass, or stainless steel, as well as food storage boxes and organizers made of these materials, typically have lids consisting of a plastic lid body with a silicone gasket or PE seal. Food items such as vegetables, fruits, water, and beverages stored in these containers come into contact not only with the ceramic, borosilicate glass, or stainless steel container body but also with the plastic lid and the silicone or PE seal. Because plastic, silicone, and PE materials are prone to aging, the resulting microplastic particles can contaminate the food inside the containers. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the prior art by providing a sealed container that can prevent microplastic particle contamination.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] A sealed container includes a sealed container body and a lid located at the open end of the sealed container body. A sealing element is provided between the open end of the sealed container body and the lid. A first annular sealing surface is provided on the top surface of the open end of the sealed container body, and a second annular sealing surface is provided on the bottom surface of the sealing element, which can be tightly sealed with the first annular sealing surface. The materials of the sealed container body and the sealing element are selected from any one of ceramic, high borosilicate glass, and stainless steel.

[0006] The sealing element is a sealing gasket, and a first elastic element is provided between the sealing element and the cover. A first protrusion is provided on the side wall of the sealing element. A first external thread is provided on the outer wall of the opening end of the main body of the sealing container. The cover is a circular cover with a labyrinth structure and a first internal thread that can cooperate with the first external thread on its inner side wall. A first notch is provided on the first internal thread that allows the first protrusion to pass through. The first notch is positioned opposite to the entrance of the labyrinth structure.

[0007] The first protrusion is used to pass through the first gap to enter the interior of the maze structure from the entrance of the maze structure;

[0008] The labyrinth structure is used to fix the rotation direction of the seal and the cover relative to each other after the first protrusion enters the interior of the labyrinth structure;

[0009] The first elastic element is a spring, which is compressed during the tightening process between the lid and the opening end of the sealing container body to provide a clamping force greater than a preset value to the sealing element, so as to press the first annular sealing surface and the second annular sealing surface together.

[0010] The top of the sealing element is provided with a first circular tube, and the top of the cover is provided with a cylindrical step. The diameter of the cylindrical step is equal to the outer diameter of the first circular tube. The bottom of the cylindrical step is provided with a second circular tube, and the bottom of the second circular tube is inserted into the top of the first circular tube. The two ends of the first elastic element are respectively sleeved on the outside of the cylindrical step and the first circular tube.

[0011] The sealed container body includes a container body, a container lid, a locking sleeve, and a second elastic element. The container lid has a trumpet-shaped structure that is smaller at the top and larger at the bottom. The first external thread is provided on the outer side wall of the top of the container lid. The first annular sealing surface is provided on the top surface of the container lid. The bottom surface of the container lid is provided with a third annular sealing surface. The top surface of the opening end of the container body is provided with a fourth annular sealing surface that can be tightly sealed with the third annular sealing surface.

[0012] The container lid has a second protrusion on its bottom side wall, and the container body has a second external thread on its open end outer wall. The locking sleeve has a limiting groove that can engage with the second protrusion and a second internal thread that can engage with the second external thread. The second internal thread has a second notch through which the second protrusion can pass. The second notch is opposite to the entrance of the limiting groove. The limiting groove entrance has a protruding limiting clip. The top of the locking sleeve has a second annular mounting groove for installing a second elastic element. After the second protrusion engages with the limiting groove, the distance from the top surface of the second annular mounting groove to the top surface of the bottom end of the container lid is less than the thickness of the second elastic element.

[0013] The second protrusion is used to pass through the second notch to reach the limit card, and then to be pushed into the limit groove from the limit card and engage with the limit groove.

[0014] The limiting groove is used to fix the rotation direction of the container lid and the container body relative to each other after engaging with the second protrusion;

[0015] The container lid is made of any one of ceramic, borosilicate glass, or stainless steel. The second elastic element is a rubber ring or a silicone ring. The second elastic element is compressed during the tightening process between the container body and the locking sleeve to provide a clamping force greater than a preset value to the container lid, so as to press the third annular sealing surface and the fourth annular sealing surface together.

[0016] The sealing element is a sealing gasket. A first elastic element is provided between the sealing element and the cover. A second protrusion is provided on the side wall of the sealing element. A first external thread is provided on the outer wall of the opening end of the main body of the sealing container. The cover is a circular cover. A limiting groove that can engage with the second protrusion and a first internal thread that can engage with the first external thread are provided on its inner side wall. A first notch that allows the second protrusion to pass through is provided on the first internal thread. The first notch is opposite to the entrance of the limiting groove. A protruding limiting clip is provided at the entrance of the limiting groove. A first annular mounting groove for installing the first elastic element is provided on the top of the cover. After the second protrusion engages with the limiting groove, the distance from the top surface of the first annular mounting groove to the top surface of the sealing element is less than the thickness of the first elastic element.

[0017] The second protrusion is used to pass through the first notch to reach the limit card, and then to be pushed into the limit groove from the limit card and engage with the limit groove.

[0018] The limiting groove is used to fix the rotation direction of the lid and the container body relative to each other after the lid is engaged with the second protrusion.

[0019] The first elastic element is a rubber ring or a silicone ring. The first elastic element is used to be compressed during the tightening process between the lid and the container body to provide a clamping force greater than a preset value for the seal, so as to press the first annular sealing surface and the second annular sealing surface together.

[0020] The sealing element is a sealing gasket, and a first elastic element is provided between the sealing element and the cover. The cover includes a cover body and a plurality of locking wings that are rotatably provided on the cover body. The locking wings are provided with clips, and the outer wall of the opening end of the sealing container body is provided with a slot that can engage with the clips.

[0021] The first elastic element is a rubber ring or a silicone ring. The first elastic element is used to be compressed during the snap-fit ​​process between the clip and the slot, so as to provide a clamping force greater than a preset value for the seal, so as to press the first annular sealing surface and the second annular sealing surface together.

[0022] The bottom surface of the cover body is provided with a first annular mounting groove for installing a first elastic element. After the clip is engaged with the groove, the distance from the top surface of the first annular mounting groove to the top surface of the sealing element is less than the thickness of the first elastic element.

[0023] The cover body has multiple fixing blocks around its perimeter. The side wall of each fixing block has an installation groove for engaging with the outer perimeter of the seal. The height between the top and bottom surfaces of the installation groove is greater than the thickness of the outer perimeter of the seal.

[0024] The sealing element is a sealing ring, and the outer ring of the sealing element is connected to the bottom of the cover. The sealing container also includes an inner retaining ring, the top of which is connected to the inner ring of the sealing element. The outer diameter of the inner retaining ring is smaller than the inner diameter of the opening end of the main body of the sealing container. The inner retaining ring, the sealing element, and the cover are integrally formed, and the materials of the inner retaining ring and the cover are the same as those of the sealing element.

[0025] The sealing element is a sealing ring, and the inner ring of the sealing element is connected to the outer ring of the cover. The sealed container also includes an outer retaining ring, the top of which is connected to the outer ring of the sealing element. The inner diameter of the outer retaining ring is larger than the outer diameter of the opening end of the main body of the sealed container. The outer retaining ring, the sealing element, and the cover are integrally formed, and the material of the outer retaining ring and the cover is the same as that of the sealing element.

[0026] The surface roughness of the first annular sealing surface and the second annular sealing surface is no greater than 0.2 μm, the contour error between the first annular sealing surface and the second annular sealing surface is no greater than 0.0005 mm, and the uniformity of the fit is greater than 95%.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. The sealed container of this invention includes a sealed container body and a lid located at the open end of the sealed container body. A sealing element is provided between the open end of the sealed container body and the lid. A first annular sealing surface is provided on the top surface of the open end of the sealed container body, and a second annular sealing surface is provided on the bottom surface of the sealing element, which can be tightly sealed with the first annular sealing surface. The materials of the sealed container body and the sealing element are selected from any one of ceramic, high borosilicate glass, and stainless steel. The above design uses ceramic, high borosilicate glass, or stainless steel, which are not prone to aging, as the materials for making the sealed container body and the sealing element. At the same time, the sealed container body and the sealing element are directly sealed by the first annular sealing surface and the second annular sealing surface. When food is stored inside the sealed space formed by the sealed container body and the sealing element, it will not come into contact with other parts made of plastic, silicone, or PE materials that are prone to aging and producing microplastics, effectively avoiding microplastic particle contamination. Therefore, this invention can completely prevent the stored food from directly contacting other parts made of plastic, silicone, or PE materials that are prone to aging and producing microplastics, effectively avoiding microplastic particle contamination.

[0029] 2. The sealing element in the sealed container of the present invention is a sealing gasket. A first elastic element is provided between the sealing element and the lid. A first protrusion is provided on the side wall of the sealing element. A first external thread is provided on the outer wall of the opening end of the sealed container body. The lid is a circular lid with a labyrinth structure and a first internal thread that can cooperate with the first external thread on its inner side wall. A first notch is provided on the first internal thread that allows the first protrusion to pass through. The first notch is positioned opposite to the entrance of the labyrinth structure. The lid, the first elastic element, and the sealing element are pre-assembled as a whole. After pre-assembly, the first protrusion is located inside the labyrinth structure. The rotation direction of the sealing element and the lid is fixed relative to each other by the labyrinth structure. In use, the lid is directly tightened to the opening end of the sealed container body. During the tightening process, the opening end of the sealed container body pushes against the sealing element, so that the first elastic element is compressed. This provides a clamping force to the sealing element after tightening, so as to press the first annular sealing surface and the second annular sealing surface together to ensure a good sealing effect. Similarly, food stored in the sealed space formed by the sealed container body and the sealing element will not come into contact with other parts such as the lid made of plastic, effectively avoiding microplastic particle contamination. Therefore, the present invention can not only ensure a good sealing effect of the container, but also prevent microplastic particles generated during aging from contaminating the food stored in the container. Attached Figure Description

[0030] Figure 1 This is an exploded view of the sealed container described in Embodiment 1 of the present invention.

[0031] Figure 2 This is a schematic diagram of the sealing element in Embodiment 1 of the present invention.

[0032] Figure 3 This is a schematic diagram of the lid structure in Embodiment 1 of the present invention.

[0033] Figure 4 This is a cross-sectional view of the sealed container described in Embodiment 1 of the present invention in a sealed state.

[0034] Figure 5 This is an exploded view of the sealed container described in Embodiment 2 of the present invention.

[0035] Figure 6 This is a cross-sectional view of the sealed container in the unsealed state according to Embodiment 2 of the present invention.

[0036] Figure 7 This is a cross-sectional view of the fixing block in the sealed container described in Embodiment 2 of the present invention.

[0037] Figure 8 This is a cross-sectional view of the sealed container described in Embodiment 2 of the present invention in a sealed state.

[0038] Figure 9 This is an exploded view of the sealed container described in Embodiment 3 of the present invention.

[0039] Figure 10 This is a cross-sectional view of the sealed container described in Embodiment 3 of the present invention in a sealed state.

[0040] Figure 11 This is an exploded view of the sealed container described in Embodiment 4 of the present invention.

[0041] Figure 12 This is a cross-sectional view of the sealed container described in Embodiment 4 of the present invention in a sealed state.

[0042] Figure 13 This is a cross-sectional view of the sealed container described in Embodiment 5 of the present invention in a sealed state.

[0043] Figure 14 for Figure 13 Enlarged schematic diagram of part A in the middle.

[0044] Figure 15 This is a schematic diagram of the sealing element in Embodiment 5 of the present invention.

[0045] Figure 16 This is a schematic diagram of the lid structure in Embodiment 5 of the present invention.

[0046] Figure 17 This is an exploded view of the sealed container described in Embodiment 5 of the present invention.

[0047] Figure 18 This is an exploded view of the sealed container described in Embodiment 6 of the present invention.

[0048] Figure 19 This is a schematic diagram of the structure of the lid in the sealed container described in Embodiment 6 of the present invention.

[0049] Figure 20 This is a schematic diagram of the structure of the sealing element in the sealed container described in Embodiment 6 of the present invention.

[0050] Figure 21 This is a cross-sectional view of the sealed container described in Embodiment 6 of the present invention in a sealed state.

[0051] Figure 22 for Figure 21 Enlarged schematic diagram of section B.

[0052] Figure 23 This is an exploded view of the sealed container described in Embodiment 7 of the present invention.

[0053] Figure 24 This is a cross-sectional view of the sealed container described in Embodiment 7 of the present invention in a sealed state.

[0054] Figure 25 This is a schematic diagram of the structure of the sealing element in the sealed container described in Embodiment 7 of the present invention.

[0055] Figure 26This is an exploded view of the sealed container described in Embodiment 8 of the present invention.

[0056] Figure 27 This is a schematic diagram of the structure of the container lid in the sealed container described in Embodiment 8 of the present invention.

[0057] Figure 28 This is a schematic diagram of the locking sleeve in the sealed container described in Embodiment 8 of the present invention.

[0058] Figure 29 This is a schematic diagram of the structure of the lid in the sealed container described in Embodiment 8 of the present invention.

[0059] Figure 30 This is a schematic diagram of the structure of the sealing element in the sealed container described in Embodiment 8 of the present invention.

[0060] Figure 31 This is a cross-sectional view of the sealed container described in Embodiment 8 of the present invention in a sealed state.

[0061] Figure 32 for Figure 31 Enlarged diagram of section C.

[0062] Figure 33 for Figure 31 Enlarged schematic diagram of section D in the middle.

[0063] In the above diagram, the components are: sealed container body 1, first annular sealing surface 11, first external thread 12, slot 13, container body 14, second external thread 141, container cap 15, second protrusion 151, locking sleeve 16, second internal thread 161, second annular mounting groove 162, second notch 163, limiting groove 164, limiting clip 165, third annular sealing surface 17, fourth annular sealing surface 18, second elastic element 19, cap 2, labyrinth structure 21, first internal thread 22, first notch 23, cylindrical step 24, second circular tube 25, cap body 26, fixing block 261, mounting groove 262, locking wing 27, clip 28, annular mounting groove 29, sealing element 3, second annular sealing surface 31, first protrusion 32, first circular tube 33, third protrusion 34, first elastic element 4, first annular mounting groove 41, inner retaining ring 5, and outer retaining ring 6. Detailed Implementation

[0064] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0065] Example 1:

[0066] See Figures 1 to 4A sealed container includes a main body 1, a lid 2, a sealing element 3, and a first elastic element 4. The main body 1 is a circular cup-shaped structure, with the diameter of its opening end being smaller than the diameter of the cup body. The top surface of the opening end of the main body 1 is provided with a first annular sealing surface 11. The outer wall of the opening end of the main body 1 is provided with a first external thread 12. The lid 2 is a circular lid, with a labyrinth structure 21 and a first internal thread 22 that can mate with the first external thread 12 on its inner side wall. The first internal thread 22 is provided with a first notch 23 through which a first protrusion 32 can pass, and the first notch 23 is connected to the entrance of the labyrinth structure 21. Regarding the configuration, the maze structure 21 is a meander-shaped structure. The sealing element 3 is located between the opening end of the sealing container body 1 and the lid 2. The sealing element 3 is a sealing gasket. The bottom surface of the sealing element 3 is provided with a second annular sealing surface 31 that can tightly seal with the first annular sealing surface 11. Both the second annular sealing surface 31 and the first annular sealing surface 11 are circular structures. The side wall of the sealing element 3 is provided with a first protrusion 32. The top of the sealing element 3 is provided with a first circular tube 33. The outer diameter of the first circular tube 33 is equal to the diameter of the cylindrical step 24 located on the top of the lid 2. The bottom of the cylindrical step 24 is provided with a second circular tube 25. The bottom of the second circular tube 25 is inserted into the top of the first circular tube 33. The bottom of the second circular tube 25 and the top of the first circular tube 33 are chamfered to achieve guidance. The first elastic element 4 is a spring, and its two ends are respectively sleeved on the outside of the cylindrical step 24 and the first circular tube 33. The materials of the sealing container body 1 and the sealing element 3 are selected from hard materials such as high borosilicate glass, ceramic, crystal, quartz, and stainless steel. The materials of the sealing container body 1 and the sealing element 3 can be different. In this embodiment, the materials of the sealing container body 1, the sealing element 3, and the first elastic element 4 are preferably food-grade stainless steel, such as 304. Stainless steel, 316 stainless steel; the cover 2 is made of food-grade plastic, such as food-grade PP, Tritan, PPSU; to ensure that the first annular sealing surface 11 and the second annular sealing surface 31 can achieve tight sealing, the surface roughness of the first annular sealing surface 11 and the second annular sealing surface 31 is not greater than 0.2μm, the contour error between the first annular sealing surface 11 and the second annular sealing surface 31 is not greater than 0.0005mm, and the uniformity of fit is greater than 95%; for ease of processing, the first annular sealing surface 11 and the second annular sealing surface 31 are set to protrude from the bottom surface of the sealing element 3.

[0067] The sealing principle of the above-mentioned sealed container is as follows: Before use, the lid 2, the sealing element 3, and the first elastic element 4 are pre-assembled into a whole. After pre-assembly, the first protrusion 32 on the sealing element 3 is located inside the labyrinth structure 21. The labyrinth structure 21 fixes the rotation direction of the sealing element 3 and the lid 2 relative to each other. When in use, the lid 2 is directly tightened to the opening end of the sealed container body 1. Since the rotation direction of the sealing element 3 and the lid 2 is relatively fixed, the sealing element 3 rotates with the lid 2. During this process, the opening end of the sealed container body 1 pushes against the sealing element 3 and compresses the first elastic element 4. When the lower edge of the lid 2 abuts against the shoulder of the sealed container body 1, it indicates that the lid 2 has been tightened. At this time, the compressed first elastic element 4 provides a downward pressing force to the sealing element 3 to press the first annular sealing surface 11 and the second annular sealing surface 31 together to achieve a good seal. For a sealed container body 1 with an opening diameter of 40mm, and assuming an internal air pressure of 150000Pa after hot water is added, it is calculated that applying a force greater than 80N to the sealing element 3 can ensure a good seal after hot water is added.

[0068] Example 2:

[0069] See Figures 5 to 8 A sealed container includes a container body 1, a lid 2, and a sealing element 3 disposed between the opening end of the container body 1 and the lid 2. The container body 1 has a box-shaped structure, which can be square, round, elliptical, etc. In this embodiment, a square box-shaped structure is preferred. The top surface of the opening end of the container body 1 is provided with a first annular sealing surface 11, and the outer wall of the opening end of the container body 1 is provided with a groove 13. The sealing element 3 is a sealing gasket, and the bottom surface of the sealing element 3 is provided with a second annular sealing surface 31 that can be tightly sealed with the first annular sealing surface 11. The lid 2 includes a lid body 26 and a plurality of locking wings 27 rotatably disposed on the lid body 26. The locking wings 27 are provided with clips 28 that can engage with the grooves 13. A first elastic element 4 is provided between the seal 3 and the cover 2. The first elastic element 4 is compressed during the engagement of the clip 28 and the slot 13 to provide a clamping force greater than a preset value to the seal 3, so as to press the first annular sealing surface 11 and the second annular sealing surface 31 together. A first annular mounting groove 41 for installing the first elastic element 4 is provided on the bottom surface of the cover body 26. After the clip 28 and the slot 13 are engaged, the distance from the top surface of the first annular mounting groove 41 to the top surface of the seal 3 is less than the thickness of the first elastic element 4. A plurality of fixing blocks 261 are provided around the periphery of the cover body 26. Mounting grooves 262 are opened on the side walls of the fixing blocks 261. The mounting grooves 262 are used to cooperate with the outer periphery of the seal 3. The height between the top surface and the bottom surface of the mounting groove 262 is greater than the thickness of the outer periphery of the seal 3.

[0070] The materials of the sealed container body 1 and the sealing element 3 are selected from hard materials such as borosilicate glass, ceramic, crystal, quartz, and stainless steel. The materials of the sealed container body 1 and the sealing element 3 can be different. In this embodiment, the materials of both the sealed container body 1 and the sealing element 3 are preferably borosilicate glass. The lid 2 is made of food-grade plastic, such as food-grade PP, Tritan, or PPSU. The material of the first elastic element 4 can be selected from rubber rings or silicone rings. To ensure that the first annular sealing surface 11 and the second annular sealing surface 31 can achieve a tight seal, The surface roughness of the first annular sealing surface 11 and the second annular sealing surface 31 is no greater than 0.2μm, the contour error between the first annular sealing surface 11 and the second annular sealing surface 31 is no greater than 0.0005mm, and the uniformity of fit is greater than 95%. For ease of processing, the first annular sealing surface 11 and the second annular sealing surface 31 are provided to protrude from the bottom surface of the sealing element 3. Multiple fixing blocks 261 and multiple locking wings 27 should be evenly distributed around the cover body 26 so that the elastic rubber ring is evenly compressed, thereby ensuring that the sealing gasket is subjected to uniform force.

[0071] The sealing principle of the above-mentioned sealed container is as follows: Before use, the lid 2, sealing element 3, and first elastic element 4 need to be pre-assembled into a whole. During sealing, the first annular sealing surface 11 on the top surface of the opening end of the sealed container body 1 first contacts the second annular sealing surface 31 on the bottom surface of the sealing element 3. Then, the clip 28 on the locking wing 27 engages with the slot 13 on the outer wall of the opening end of the sealed container body 1. After engagement, the lid 2 moves down as a whole. Since the distance from the top surface of the first annular mounting groove 41 to the top surface of the sealing element 3 is less than the thickness of the first elastic element 4, and the height of the mounting groove 262 is greater than the thickness of the outer periphery of the sealing element 3, the first elastic element 4 is compressed while the lid 2 moves down as a whole, thereby applying a downward pressing force to the sealing element 3 to ensure a good sealing effect. For a sealed container body 1 with an opening of 100mm×100mm, applying a force greater than 50N to the sealing element 3 can ensure that food is sealed at room temperature and in a refrigerator environment. The first elastic element 4 can be removed for easy cleaning of the inside of the lid 2 and the sealing element 3.

[0072] Example 3:

[0073] See Figure 9 , Figure 10A sealed container includes a container body 1, a lid 2, a sealing element 3, and an inner retaining ring 5. The container body 1 has a can-like structure. A first annular sealing surface 11 is provided on the top surface of the opening end of the container body 1. The sealing element 3 is located between the opening end of the container body 1 and the lid 2. The sealing element 3 is a sealing ring. A second annular sealing surface 31 is provided on the bottom surface of the sealing element 3, which can tightly seal against the first annular sealing surface 11. The outer ring of the sealing element 3 is connected to the bottom of the lid 2, and the inner ring of the sealing element 3 is connected to the top of the inner retaining ring 5. The outer diameter of the inner retaining ring 5 is smaller than the inner diameter of the opening end of the container body 1. The inner retaining ring 5 prevents the lid 2 from slipping off the container body 1 after it is closed. The materials of the container body 1 and the sealing element 3 are selected from high borosilicate glass and ceramic. The materials used are hard materials such as crystal, quartz, and stainless steel, and the materials of the sealing container body 1 and the sealing element 3 can be different. In this embodiment, the materials of the sealing container body 1, the lid 2, the sealing element 3, and the inner retaining ring 5 are preferably ceramic, and the lid 2, the inner retaining ring 5, and the sealing element 3 are integrally formed. In order to ensure that the first annular sealing surface 11 and the second annular sealing surface 31 can achieve tight sealing, the surface roughness of the first annular sealing surface 11 and the second annular sealing surface 31 is not greater than 0.2μm, the contour error between the first annular sealing surface 11 and the second annular sealing surface 31 is not greater than 0.0005mm, and the uniformity of the fit is greater than 95%. For ease of processing, the first annular sealing surface 11 and the second annular sealing surface 31 are set to protrude from the bottom surface of the sealing element 3.

[0074] The sealing principle of the above-mentioned sealed container is as follows: the first annular sealing surface 11 and the second annular sealing surface 31 are tightly sealed by the weight of the lid 2 itself, which is suitable for use in scenarios where the sealing performance requirements are not high.

[0075] Example 4:

[0076] See Figure 11 , Figure 12A sealed container includes a container body 1, a lid 2, a sealing element 3, and an outer retaining ring 6. The container body 1 has a can-like structure. A first annular sealing surface 11 is provided on the top surface of the opening end of the container body 1. The sealing element 3 is located between the opening end of the container body 1 and the lid 2. The sealing element 3 is a sealing ring. The bottom surface of the sealing element 3 has a second annular sealing surface 31 that can tightly seal against the first annular sealing surface 11. The inner ring of the sealing element 3 is connected to the outer ring of the lid 2, and the outer ring of the sealing element 3 is connected to the top of the outer retaining ring 6. The inner diameter of the outer retaining ring 6 is larger than the outer diameter of the opening end of the container body 1, preventing the lid 2 from slipping off the container body 1 after it is closed. The materials of the container body 1 and the sealing element 3 are selected from high borosilicate glass. Hard materials such as ceramics, crystal, and quartz are used, and the materials of the sealing container body 1 and the sealing element 3 can be different. In this embodiment, the materials of the sealing container body 1, the lid 2, the sealing element 3, and the outer retaining ring 6 are preferably ceramic, and the lid 2 is integrally formed with the outer retaining ring 6 and the sealing element 3. To ensure that the first annular sealing surface 11 and the second annular sealing surface 31 can achieve a tight seal, the surface roughness of the first annular sealing surface 11 and the second annular sealing surface 31 is not greater than 0.2μm, the contour error between the first annular sealing surface 11 and the second annular sealing surface 31 is not greater than 0.0005mm, and the uniformity of fit is greater than 95%. For ease of processing, the first annular sealing surface 11 and the second annular sealing surface 31 are provided to protrude from the bottom surface of the sealing element 3. The sealing principle of the above-mentioned sealing container is the same as that of Embodiment 3, and will not be repeated here.

[0077] Example 5:

[0078] The difference from Example 1 is that, see [link to example]. Figures 13 to 17 The main body of the sealed container 1 is a circular bottle-shaped structure.

[0079] Example 6:

[0080] See Figures 18 to 22A sealed container includes a container body 1, a lid 2, and a sealing element 3 located between the opening end of the container body 1 and the lid 2. The top surface of the opening end of the container body 1 has a first annular sealing surface 11, and the outer wall of the opening end of the container body 1 has a first external thread 12. The sealing element 3 is a sealing gasket, and the bottom surface of the sealing element 3 has a second annular sealing surface 31 that can tightly seal against the first annular sealing surface 11. A first elastic element 4 is provided between the sealing element 3 and the lid 2, and a second elastic element 4 is provided on the side wall of the sealing element 3. The cover 2 is a circular cover with a protrusion 151. Its inner wall has a limiting groove 164 that engages with the second protrusion 151 and a first internal thread 22 that mates with the first external thread 12. The first internal thread 22 has a first notch 23 through which the second protrusion 151 passes. The first notch 23 is opposite to the entrance of the limiting groove 164. A protruding limiting clip 165 is provided at the entrance of the limiting groove 164. The limiting groove 164 has a square frame structure. The top of the cover 2 has a first elastic element 4 for installation. The annular mounting groove 41 has a first elastic element 4 made of rubber or silicone. After the second protrusion 151 engages with the limiting groove 164, the distance from the top surface of the first annular mounting groove 41 to the top surface of the sealing element 3 is less than the thickness of the first elastic element 4. The materials of the sealing container body 1 and the sealing element 3 are selected from hard materials such as borosilicate glass, ceramic, crystal, quartz, and stainless steel. The materials of the sealing container body 1 and the sealing element 3 may be different. In this embodiment, the materials of the sealing container body 1 and the sealing element 3 are preferably food-grade stainless steel. The material of the lid 2 is food-grade plastic. To ensure that the first annular sealing surface 11 and the second annular sealing surface 31 can achieve tight sealing, the surface roughness of the first annular sealing surface 11 and the second annular sealing surface 31 is not greater than 0.2μm, the contour error between the first annular sealing surface 11 and the second annular sealing surface 31 is not greater than 0.0005mm, and the uniformity of the fit is greater than 95%. For ease of processing, the first annular sealing surface 11 and the second annular sealing surface 31 protrude from the bottom surface of the sealing element 3.

[0081] The sealing principle of the above-mentioned sealed container is as follows: Before use, the sealing element 3 and the cover 2 need to be pre-assembled as a whole. The pre-assembly process is as follows: First, the second protrusion 151 passes through the first notch 23 and reaches the limiting card 165. Then, it is pushed into the limiting groove 164 from the limiting card 165 and engages with the limiting groove 164. After the second protrusion 151 enters the limiting groove 164, the rotation direction of the sealing element 3 and the cover 2 is fixed relative to each other through the limiting groove 164. In this way, the pre-assembly of the sealing element 3 and the cover 2 is achieved. The limiting card 165 prevents the second protrusion 151 from falling out of the limiting groove 164. When in use, the cover 2 is directly tightened to the opening end of the sealed container body 1. At the same time, the first elastic element 4 is compressed while the opening end of the sealed container body 1 pushes against the sealing element 3. The compressed first elastic element 4 provides a clamping force for the sealing element 3 to press the first annular sealing surface 11 and the second annular sealing surface 31 together.

[0082] Example 7:

[0083] The difference from Example 6 is that, see [link to Example 6] Figures 23 to 25 The main body of the sealed container 1 is a circular bottle-shaped structure.

[0084] Example 8:

[0085] See Figures 26 to 33 The difference from Embodiment 1 is that the sealed container body 1 includes a container body 14, a container lid 15, a locking sleeve 16, and a second elastic element 19. The container lid 15 has a trumpet-shaped structure that is smaller at the top and larger at the bottom. A first external thread 12 is provided on the outer side wall of the top of the container lid 15. A first annular sealing surface 11 is provided on the top surface of the container lid 15. A third annular sealing surface 17 is provided on the bottom surface of the container lid 15. A fourth annular sealing surface 18 is provided on the top surface of the opening end of the container body 14, which can be tightly sealed with the third annular sealing surface 17. A second protrusion 151 is provided on the side wall of the bottom end of the container lid 15. A second external thread 141 is provided on the outer wall of the opening end of the container body 14. A limiting groove 164 that can engage with the second protrusion 151 and a second external thread 141 are provided on the inner side wall of the locking sleeve 16. The second internal thread 161 is matched with the second thread 141. The second internal thread 161 is provided with a second notch 163 through which the second protrusion 151 can pass. The second notch 163 is opposite to the entrance of the limiting groove 164. A protruding limiting clip 165 is provided at the entrance of the limiting groove 164. The top of the locking sleeve 16 is provided with a second annular mounting groove 162 for installing the second elastic element 19. After the second protrusion 151 is engaged with the limiting groove 164, the distance from the top surface of the second annular mounting groove 162 to the bottom top surface of the container cover 15 is less than the thickness of the second elastic element 19. The second elastic element 19 is a rubber ring or a silicone ring. The materials of the container body 14 and the container cover 15 are selected from any one of ceramic, high borosilicate glass, and stainless steel. In this embodiment, food-grade stainless steel is preferred. The material of the locking sleeve 16 is food-grade plastic.

[0086] The sealing principle of the above-mentioned sealed container is as follows: it is necessary to seal the container body 14 with the container lid 15 and the container lid 15 with the cap 2. The sealing process between the container body 14 and the container lid 15 is the same as in Example 5, and will not be repeated here. The sealing process between the container lid 15 and the cap 2 is the same as in Example 1, and will not be repeated here.

[0087] In this embodiment, the main body 1 of the sealed container adopts a split design. When only the cap 2 is unscrewed, the top opening of the container cap 15 is small, making it convenient to drink beverages directly. When only the container cap 15 is unscrewed, the opening of the container body 14 is large, making it convenient to pour beverages into the container.

[0088] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present invention should be included within the scope of protection set forth in the claims.

Claims

1. A sealed container, comprising a sealed container body (1) and a lid (2) located at the open end of the sealed container body (1), characterized in that: A sealing element (3) is provided between the opening end of the sealed container body (1) and the lid (2). The top surface of the opening end of the sealed container body (1) is provided with a first annular sealing surface (11), and the bottom surface of the sealing element (3) is provided with a second annular sealing surface (31) that can be tightly sealed with the first annular sealing surface (11). The materials of the sealed container body (1) and the sealing element (3) are selected from any one of ceramic, high borosilicate glass and stainless steel.

2. A sealed container according to claim 1, characterized in that: The sealing element (3) is a sealing gasket. A first elastic element (4) is provided between the sealing element (3) and the cover (2). A first protrusion (32) is provided on the side wall of the sealing element (3). A first external thread (12) is provided on the outer wall of the opening end of the sealing container body (1). The cover (2) is a circular cover. A labyrinth structure (21) and a first internal thread (22) that can cooperate with the first external thread (12) are provided on its inner side wall. A first notch (23) is provided on the first internal thread (22) that allows the first protrusion (32) to pass through. The first notch (23) is positioned opposite to the entrance of the labyrinth structure (21). The first protrusion (32) is used to pass through the first gap (23) to enter the interior of the maze structure (21) from the entrance of the maze structure (21); The labyrinth structure (21) is used to fix the rotation direction of the seal (3) relative to that of the cover (2) after the first protrusion (32) enters the labyrinth structure (21); The first elastic element (4) is a spring, which is compressed during the tightening process of the lid (2) and the opening end of the sealing container body (1) to provide a clamping force greater than the preset value for the sealing element (3) to press the first annular sealing surface (11) and the second annular sealing surface (31) together.

3. A sealed container according to claim 2, characterized in that: The top of the sealing element (3) is provided with a first circular tube (33), and the top of the cover (2) is provided with a cylindrical step (24). The diameter of the cylindrical step (24) is equal to the outer diameter of the first circular tube (33). The bottom of the cylindrical step (24) is provided with a second circular tube (25). The bottom of the second circular tube (25) is inserted into the top of the first circular tube (33). The two ends of the first elastic element (4) are respectively sleeved on the outside of the cylindrical step (24) and the first circular tube (33).

4. A sealed container according to claim 3, characterized in that: The sealed container body (1) includes a container body (14), a container lid (15), a locking sleeve (16), and a second elastic element (19). The container lid (15) is a trumpet-shaped structure with a smaller top and a larger bottom. The first external thread (12) is provided on the outer side of the top of the container lid (15). The first annular sealing surface (11) is provided on the top surface of the top of the container lid (15). The bottom surface of the container lid (15) is provided with a third annular sealing surface (17). The top surface of the opening end of the container body (14) is provided with a fourth annular sealing surface (18) that can be tightly sealed with the third annular sealing surface (17). The container lid (15) has a second protrusion (151) on its bottom sidewall, and the container body (14) has a second external thread (141) on its open outer wall. The locking sleeve (16) has a limiting groove (164) that can engage with the second protrusion (151) and a second internal thread (161) that can engage with the second external thread (141). The second internal thread (161) has a second notch (163) through which the second protrusion (151) can pass. The second notch (163) is positioned opposite to the entrance of the limiting groove (164). A protruding limiting clip (165) is provided at the entrance of the limiting groove (164). The top of the locking sleeve (16) is provided with a second annular mounting groove (162) for installing the second elastic element (19). After the second protrusion (151) is engaged with the limiting groove (164), the distance from the top surface of the second annular mounting groove (162) to the bottom top surface of the container cover (15) is less than the thickness of the second elastic element (19). The second protrusion (151) is used to pass through the second notch (163) to reach the limit card (165), and then be pushed into the limit groove (164) from the limit card (165) to engage with the limit groove (164); The limiting groove (164) is used to fix the rotation direction of the container lid (15) and the container body (14) relative to each other after the limiting groove (164) and the second protrusion (151) are engaged. The material of the container lid (15) is selected from any one of ceramic, high borosilicate glass, and stainless steel. The second elastic element (19) is a rubber ring or a silicone ring. The second elastic element (19) is used to be compressed during the tightening process of the container body (14) and the locking sleeve (16) to provide a clamping force greater than the preset value for the container lid (15) to press the third annular sealing surface (17) and the fourth annular sealing surface (18) together.

5. A sealed container according to claim 1, characterized in that: The sealing element (3) is a sealing gasket, and a first elastic element (4) is provided between the sealing element (3) and the cover (2). A second protrusion (151) is provided on the side wall of the sealing element (3). A first external thread (12) is provided on the outer wall of the opening end of the sealing container body (1). The cover (2) is a circular cover, and a limiting groove (164) that can engage with the second protrusion (151) and a first internal thread (22) that can engage with the first external thread (12) are provided on its inner side wall. The first internal thread (22) is provided with a second... The protrusion (151) passes through the first notch (23), the first notch (23) is opposite to the entrance of the limiting groove (164), the entrance of the limiting groove (164) is provided with a protruding limiting card (165), the top of the cover (2) is provided with a first annular mounting groove (41) for installing the first elastic element (4), after the second protrusion (151) and the limiting groove (164) are engaged, the distance from the top surface of the first annular mounting groove (41) to the top surface of the sealing element (3) is less than the thickness of the first elastic element (4); The second protrusion (151) is used to pass through the first notch (23) to reach the limit card (165), and then be pushed into the limit groove (164) from the limit card (165) to engage with the limit groove (164); The limiting groove (164) is used to fix the rotation direction of the lid (2) and the container body (14) relative to each other after it is engaged with the second protrusion (151); The first elastic element (4) is a rubber ring or a silicone ring. The first elastic element (4) is used to be compressed during the tightening process of the lid (2) and the container body (14) to provide a clamping force greater than the preset value for the seal (3) so as to press the first annular sealing surface (11) and the second annular sealing surface (31) together.

6. A sealed container according to claim 1, characterized in that: The sealing element (3) is a sealing gasket. A first elastic element (4) is provided between the sealing element (3) and the cover (2). The cover (2) includes a cover body (26) and a plurality of locking wings (27) rotatably provided on the cover body (26). The locking wings (27) are provided with clips (28). The outer wall of the opening end of the sealing container body (1) is provided with a slot (13) that can engage with the clips (28). The first elastic element (4) is a rubber ring or a silicone ring. The first elastic element (4) is used to be compressed during the engagement of the clip (28) and the slot (13) to provide a clamping force greater than the preset value for the seal (3) so as to press the first annular sealing surface (11) and the second annular sealing surface (31) together.

7. A sealed container according to claim 6, characterized in that: The bottom surface of the cover body (26) is provided with a first annular mounting groove (41) for installing the first elastic element (4). After the clip (28) and the slot (13) are engaged, the distance from the top surface of the first annular mounting groove (41) to the top surface of the sealing element (3) is less than the thickness of the first elastic element (4). The cover body (26) is provided with a plurality of fixing blocks (261) around its perimeter. The fixing blocks (261) have mounting grooves (262) on their side walls. The mounting grooves (262) are used to cooperate with the outer periphery of the seal (3). The height between the top and bottom surfaces of the mounting grooves (262) is greater than the thickness of the outer periphery of the seal (3).

8. A sealed container according to claim 1, characterized in that: The sealing element (3) is a sealing ring. The outer ring of the sealing element (3) is connected to the bottom of the cover (2). The sealing container also includes an inner retaining ring (5). The top of the inner retaining ring (5) is connected to the inner ring of the sealing element (3). The outer diameter of the inner retaining ring (5) is smaller than the inner diameter of the opening end of the sealing container body (1). The inner retaining ring (5), the sealing element (3), and the cover (2) are integrally formed. The materials of the inner retaining ring (5) and the cover (2) are the same as the materials of the sealing element (3).

9. A sealed container according to claim 1, characterized in that: The sealing element (3) is a sealing ring. The inner ring of the sealing element (3) is connected to the outer ring of the cover (2). The sealing container also includes an outer retaining ring (6). The top of the outer retaining ring (6) is connected to the outer ring of the sealing element (3). The inner diameter of the outer retaining ring (6) is larger than the outer diameter of the opening end of the sealing container body (1). The outer retaining ring (6), the sealing element (3), and the cover (2) are integrally formed. The materials of the outer retaining ring (6) and the cover (2) are the same as the materials of the sealing element (3).

10. A sealed container according to claim 1, characterized in that: The surface roughness of the first annular sealing surface (11) and the second annular sealing surface (31) is no greater than 0.2 μm, the contour error between the first annular sealing surface (11) and the second annular sealing surface (31) is no greater than 0.0005 mm, and the uniformity of the fit is greater than 95%.

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