A rotary seal tank

Abstract

The utility model relates to a rotary type sealing jar, including up and down setting base cover and bottom cover, base cover and bottom cover up and down interval setting, bottom cover periphery outside edge is provided with sealing ring, still include the jar body that upper end open setting, bottom cover is placed in the inside upper end of jar body, base cover outer edge setting is transversely set as outer edge A, the inside of outer edge A is provided with the lower edge A that extends from base cover downward, outer edge A places on the open mouth of jar body, and lower edge A is close to jar body inner wall, sealing ring inner end fixed connection is in bottom cover, and outer end is placed on the outside wall of outer edge A outside, still include rotating assembly, rotating assembly includes setting rotating seat and rotating column with bottom cover upper surface center fixed connection of rotating seat upper surface, and base cover middle part is provided with center hole, and rotating seat middle part is provided with through cavity, and rotating column passes through center hole and through cavity and is spirally connected with rotating seat.

Description

Technical Field

[0001] This utility model relates to the field of storage products, and in particular to a rotary sealing jar. Background Technology

[0002] Currently, when preserving food or items, airtight containers are often used to isolate them from moisture, certain gases, and odors in the air. Chinese invention patent CN112849720B discloses a sealing cover, including a first cover body; a second cover body movably disposed at the lower end of the first cover body; a sealing ring disposed around the periphery of the first or second cover body; when the first and second cover bodies approach each other by a certain distance, the sealing ring expands outward under the pressure of the first and second cover bodies, thereby sealing the port of the container to be fitted; a locking structure for driving the first and second cover bodies to approach or separate; the locking structure includes: a placement groove provided in the middle of the first cover body, at least two rocker arms provided in the placement groove, the inner ends of the rocker arms being disposed in the placement groove, and the outer ends of the rocker arms extending out of the placement groove and hooking the second cover body; a button assembly is also provided in the placement groove, the button assembly applies pressure to the inner ends of the rocker arms, causing the outer ends of the rocker arms to drive the second cover body to approach or move away from the first cover body; the button assembly includes a pressing cap and a spring core assembly, the pressing cap is locked by the spring core assembly when pressed for the first time, and is released by the spring core assembly when pressed again.

[0003] However, in this technical solution, in order to lock and seal the first cover and the second cover by pressing the button, not only are components such as rocker arms, placement slots, and connecting blocks required to make the two move relative to each other, but also components such as pressing caps and spring core assemblies are required to lock or unlock the relative movement of the two. This not only makes the structure complex and the production cost high, but also makes the whole system unable to work if a certain part is damaged after long-term use, resulting in poor stability. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rotary sealing tank with simple structure and high stability.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A rotary sealing container includes a base cover and a bottom cover arranged vertically and spaced apart. A sealing ring is provided on the outer circumferential edge of the bottom cover. The container also includes a container body with an open upper end. The bottom cover is placed inside the upper part of the container body. The outer edge of the base cover has a transverse outer edge A, and a lower edge A extending downwards from the base cover is provided on the inner side of the outer edge A. The outer edge A rests on the open end of the container body, and the lower edge A is close to the inner wall of the container body. The inner end of the sealing ring is fixedly connected to the bottom cover, and the outer end rests on the outer wall of the outer edge A. The container also includes a rotating assembly, which includes a rotating seat disposed on the upper surface of the base cover and a rotating ring fixedly connected to the center of the upper surface of the bottom cover. The column and base cover have a central hole in the middle, and the rotating seat has a through cavity in the middle. The rotating column passes through the central hole and the through cavity and is spirally connected to the rotating seat. In the default state, the bottom cover is away from the base cover. Rotating the rotating seat clockwise, the rotating column rises and pulls the bottom cover closer to the base cover. The sealing ring rises simultaneously, causing the outer end of the sealing ring to move upward and outward to seal the gap between the outer edge A and the inner wall of the tank. The bottom cover continues to rise, reducing the air density inside the tank and creating negative pressure, thus securing the base cover tightly to the tank. Rotating the rotating seat counterclockwise, the bottom cover descends, causing the outer end of the sealing ring to move away from the gap between the outer edge A and the inner wall of the tank. Outside air enters the tank, and the seal is released.

[0007] According to an embodiment of the present invention, a rotary sealing tank has a cylindrical cavity with an internal thread on the inner wall of the cavity and an external thread on the outer wall of the upper end of the rotating column. The rotating seat and the rotating column are helically connected by the external thread and the internal thread.

[0008] According to an embodiment of the present invention, a rotary sealing tank has two centrally symmetrical spiral ramps arranged around the periphery of the cavity. The spiral ramps are configured as a slope that gradually descends from high to low in a clockwise direction. A horizontal bar is arranged at the center of the top of the rotating column, and the bottom walls of both ends of the horizontal bar are placed on the slope surface of the spiral ramps.

[0009] According to an embodiment of the present invention, a rotary sealing tank is provided adjacent to the bottom end of the spiral slope, and the limiting wall can continue to move clockwise against the limiting crossbar; a recessed groove is provided at the top end of the spiral slope, and the crossbar enters the groove to form a limiting stop when no external force is applied, and the crossbar can disengage from the groove to continue moving under the action of external force.

[0010] According to an embodiment of the present invention, a rotary sealing tank is provided with adjacent retaining rings surrounding the outside of the spiral ramp. The height of the retaining rings is higher than the height of the spiral ramp, and the end sidewalls of the crossbar abut against the inner sidewalls of the retaining rings.

[0011] According to some embodiments of this utility model, the lower end of the lower edge A is set as an inclined surface that slopes from the outside to the inside, and the outer end of the sealing ring is placed on the inclined surface and can move up and down along the inclined surface.

[0012] According to some embodiments of the present invention, the base cover is further provided with a lower edge B extending downward, and the bottom cover is provided with an upper edge extending upward, with the upper edge sleeved outside the lower edge B.

[0013] According to some embodiments of this utility model, it also includes a top cover A. Both the top cover A and the rotating seat are disposed inside the base cover and can rotate relative to the base cover. When the top cover A is rotated, the rotating seat rotates synchronously.

[0014] According to some embodiments of the present invention, the top cover A is made of plastic material, a longitudinal first protrusion is provided on the inner wall of the top cover A, a longitudinal guide groove is provided through the outer wall of the rotating seat, an annular second protrusion is provided transversely at the bottom end of the inner wall of the top cover A, and an annular limiting groove is provided at the bottom end of the outer wall of the rotating seat.

[0015] According to some embodiments of this utility model, a lever is horizontally arranged on the outer edge of the top cover A, and the lever can be moved to rotate the top cover A.

[0016] According to some embodiments of this utility model, the sealed container is cylindrical in shape and includes a top cover B. The top cover B is fastened to the outside of the base cover and can rotate relative to the base cover. When the top cover B is rotated, the rotating seat rotates synchronously.

[0017] According to some embodiments of this utility model, the top cover B is integrally formed with the rotating seat or is fixedly connected by a locking block and a locking hole.

[0018] According to some embodiments of this utility model, the top cover B has multiple spaced arc-shaped grooves on its circumference, and the base cover has multiple limiting posts on its upper surface, the same number as the arc-shaped grooves. The limiting posts are limited within the arc-shaped grooves and can rotate relative to the top cover B.

[0019] According to some embodiments of the present invention, a top cover is also included, which is disposed on the upper surface of the top cover B.

[0020] According to some embodiments of this utility model, the top cover is snapped and fixed to the edge and / or limiting post of the top cover B, or is integrally formed with the top cover B.

[0021] According to some embodiments of this utility model, it also includes a spring sleeved on the outside of the rotating column. The upper end of the spring abuts against the bottom surface of the base cover and the lower end abuts against the top surface of the base cover, so that the base cover moves away from the base cover in its natural state. When the base cover is subjected to force and rises, the spring can be compressed and move closer to the base cover.

[0022] According to some embodiments of this utility model, a protruding annular ring is provided on the top surface of the bottom cover, and the spring is limited within the annular ring to prevent shaking.

[0023] In summary, the advantages of this utility model compared to the prior art are as follows: by rotating the component, the base cover and bottom cover rotate relative to each other, causing them to move closer or further apart. The sealing ring moves up and down accordingly to seal or release the gap between the outer edge A and the tank body. This results in fewer parts, a simpler structure, reduced production costs, and improved stability and service life of the sealed tank. Attached Figure Description

[0024] Figure 1 This is a schematic cross-sectional view of the structure in the unsealed state of the first embodiment;

[0025] Figure 2 This is a schematic cross-sectional view of the structure in the sealed state of the first embodiment;

[0026] Figure 3 This is a schematic cross-sectional view of the structure in the unsealed state of the second embodiment;

[0027] Figure 4 This is a schematic cross-sectional view of the structure in the sealed state of the second embodiment;

[0028] Figure 5 This is a schematic diagram of the rotating seat in the first embodiment;

[0029] Figure 6 This is a schematic diagram of the rotating column and bottom cover in the first embodiment;

[0030] Figure 7 This is a schematic diagram of the rotating assembly and the bottom cover in the first embodiment;

[0031] Figure 8 This is a schematic cross-sectional view of the exploded structure of the rotating assembly and the bottom cover in the second embodiment;

[0032] Figure 9 This is one of the schematic diagrams of the overall structure of the sealed container;

[0033] Figure 10 This is one of the schematic diagrams showing the overall exploded structure of the sealed container;

[0034] Figure 11 This is the second schematic diagram of the overall structure of the sealed container;

[0035] Figure 12 This is the third schematic diagram of the overall structure of the sealed container;

[0036] Figure 13 An exploded view of the first embodiment of the top cover B, base cover, and bottom cover structure;

[0037] Figure 14 Base-cover perspective three-dimensional view;

[0038] Figure 15 This is the fourth schematic diagram of the overall structure of the sealed container;

[0039] Figure 16 for Figure 15 First embodiment exploded state diagram;

[0040] Figure 17 for Figure 15 Second embodiment exploded state diagram;

[0041] Figure 18 A three-dimensional view of a sealed container with a top cover;

[0042] Figure 19 Top-view perspective of the exploded structure of top cover A and rotating seat;

[0043] Figure 20 An exploded view of the top cover A and the rotating base from below.

[0044] Figure label:

[0045] 1. Base cover; 11. Outer edge A; 12. Lower edge A; 121. Inclined surface; 13. Lower edge B; 14. Center hole; 15. Limiting post; 2. Bottom cover; 21. Upper edge; 3. Sealing ring; 4. Rotating assembly; 41. Rotating seat; 411. Spiral ramp; 4111. Limiting wall; 4112. Groove; 412. Retaining ring; 413. Through cavity; 414. Internal thread; 415. Guide groove; 416. Limiting groove; 42. Rotating post; 421. External thread; 422. Crossbar; 5. Top cover A; 51. Lever; 52. First convex ridge; 53. Second convex ridge; 6. Top cover B; 61. Arc groove; 7. Top cover; 8. Tank body; 91. Locking block; 92. Locking hole; 101. Annular ring; 102. Spring Detailed Implementation

[0046] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] The present invention will be further described in detail below with reference to the accompanying drawings:

[0048] A type of rotary sealing container, such as Figures 1-20 As shown, the device includes a base cover 1 and a bottom cover 2 arranged vertically, spaced apart. The bottom cover 2 can move upwards closer to the base cover 1 or downwards away from it. A sealing ring 3 is provided around the outer edge of the bottom cover 2. The sealing ring 3 is a flexible structure, preferably made of rubber. The device also includes a tank body 8 with an open top. The bottom cover 2 is placed inside the upper part of the tank body 8. Figures 1-4 andFigure 14 As shown, the outer edge of the base cover 1 is provided with a transverse outer edge A11, and the inner side of the outer edge A11 is provided with a lower edge A12 extending downward from the base cover 1. The outer edge A11 is placed on the opening of the tank body 8, and the lower edge A12 is close to the inner wall of the tank body 8. The outer edge A11 can be set as a horizontal plane, so that it can rest on the top surface of the opening of the tank body 8. The outer edge A11 can also be set as a bent surface with a downward notch. The side wall at the opening of the tank body 8 is inserted into the notch so that the outer edge A11 and the side wall of the tank body 8 are positioned. The inner end of the sealing ring 3 is fixedly connected to the bottom cover 2, and the outer end is placed on the bottom cover 2. On the outer wall of the outer edge A11, i.e., the outer end of the sealing ring is located between the outer edge A11 and the tank body 8, the outer end of the sealing ring is preferably oriented upward and outward; it also includes a rotating assembly 4, which includes a rotating seat 41 disposed on the upper surface of the base cover 1 and a rotating column 42 fixedly connected to the center of the upper surface of the bottom cover 2. The rotating seat 41 can raise the rotating column 42 by rotating clockwise, and the rotating seat 41 can lower the rotating column 42 by rotating counterclockwise. The base cover 1 is provided with a central hole 14 in the middle, and the rotating seat 41 is provided with a through cavity 413 in the middle, through which the rotating column 42 passes. The cavity 413 and the rotating seat 41 are spirally connected. In the default state, the bottom cover 2 is away from the base cover 1. Rotating the rotating seat 41 clockwise causes the rotating column 42 to rise and pull the bottom cover 2 upward towards the base cover 1. The sealing ring 3 rises simultaneously, causing the outer end of the sealing ring 3 to move upward and outward to fill the gap between the outer edge A11 and the inner wall of the tank 8. While the displacement of the sealing ring blocks the gap, the flexible material of the sealing ring 3 further fills the gap, making the base cover 1 and the tank 8 completely sealed and isolated from the outside air. The bottom cover 2 continues to rise, increasing the volume inside the tank 8 and reducing the amount of air inside the tank 8. As the volume increases, the density decreases and the pressure decreases. The air pressure inside the tank 8 is lower than that outside, creating a negative pressure that makes the base cover 1 tightly sealed on the tank 8 and difficult to remove. Rotating the rotating seat 41 counterclockwise, the rotating column 42, under the combined weight of itself and the components connected to it, plus the pressure exerted on it by the high external air pressure, causes the rotating column 42 and the base cover 2 to descend. This causes the outer end of the sealing ring 3 to move away from the gap between the outer edge A11 and the inner wall of the tank 8, allowing outside air to enter the tank 8. The air pressure inside and outside the tank 8 becomes the same, the seal is released, and the base cover 1 can be removed from the tank 8 without resistance.

[0049] To further ensure that the bottom cover 2 is away from the base cover 1 in its natural state (default state), a spring 102 can be installed on the outside of the rotating column 42. The upper end of the spring 102 abuts against the bottom surface of the base cover 1, and the lower end abuts against the top surface of the bottom cover 2, so that the bottom cover 2 is away from the base cover 1 without external force. Thus, when the rotating seat 41 is rotated clockwise to raise the rotating column 42, the bottom cover 2 compresses the spring 102 and rises closer to the base cover 1. When the rotating seat 41 is rotated counterclockwise, the elastic deformation of the spring 102 recovers, pushing the rotating column 42 to move down more quickly, so that the bottom cover 2 returns to the default state of being away from the base cover 1. To prevent the spring 102 from wobbling on the rotating column 42, a protruding annular ring 101 can be provided on the top surface of the bottom cover 2 to limit the spring 102 within the annular ring 101.

[0050] To ensure that the outer end of the sealing ring 3 more accurately enters the gap between the outer edge A11 and the inner wall of the tank 8 during movement, an inclined surface 121 is provided at the lower end of the lower edge A12, sloping from the outside in. The outer end of the sealing ring 3 is placed on the inclined surface 121 and can move up and down along the inclined surface 121. Figure 1 As shown, when the sealed container is unsealed, the outer end of the sealing ring 3 is located at the lower part of the inclined surface 121. The outer end of the sealing ring 3 does not extend beyond the outer wall of the lower edge A12 to avoid friction with the inner wall of the container 8 and hinder the removal and placement of the base cover 1.

[0051] To ensure the stability of the vertical relative movement of the base cover 1 and the bottom cover 2, a downwardly extending lower edge B13 can be further provided on the base cover 1, and an upwardly extending upper edge 21 can be provided on the bottom cover 2. The upper edge 21 fits snugly against the outside of the lower edge B13 to form a vertical movement path to ensure the stability of the movement. Preferably, the lower edge B13 is an annular wall provided inside the lower edge A12.

[0052] The rotating component 4 has the following two embodiments of a helical rotating structure:

[0053] The first embodiment, such as Figure 3 , Figure 4 and Figure 8 As shown, the cavity 413 is configured as a cylinder, with an internal thread 414 on the inner wall of the cavity 413 and an external thread 421 on the outer wall of the upper end of the rotating column 42. The rotating seat 41 and the rotating column 42 are helically connected through the external thread 421 and the internal thread 414. It should be noted that in this embodiment, during the process of the rotating seat 41 rotating counterclockwise to lower the rotating column 42, the weight of the rotating column 42 and its connected components, the pressure generated by the external air pressure being greater than the air pressure inside the tank, and the elastic deformation recovery of the spring 102, together with the threaded track, play a role in moving the bottom cover 2 down to return to its default state away from the base cover 1.

[0054] The second embodiment, such as Figure 1 , Figure 2 , Figures 5-7As shown, two centrally symmetrical spiral ramps 411 are arranged around the periphery of the cavity 413. The spiral ramps 411 are designed to slope gently from high to low in a clockwise direction. A horizontal bar 422 is arranged at the center of the top of the rotating column 42. The bottom walls of both ends of the horizontal bar 422 are placed on the slope surface of the spiral ramps 411. In the default state, the horizontal bar 422 is placed at the bottom of the ramp, and the sealing can is in an unsealed state. When the rotating seat 41 rotates clockwise, the horizontal bar 422 moves from the bottom of the spiral ramp 411 to the top of the ramp. The horizontal bar 422 is raised, which drives the rotating column 42 to move the bottom cover 2 up and closer to the base cover 1, and the sealing can is in a sealed state. Preferably, the angle between the straight line containing the bottom of the spiral ramp 411 and the center of symmetry and the straight line containing the top of the spiral ramp 411 and the center of symmetry is 90 degrees.

[0055] To limit the position of the crossbar 422 at the bottom and top of the spiral slope 411 so that the sealing and unsealing states of the sealing box can be locked without external force, a limiting wall 4111 is provided adjacent to the bottom of the spiral slope 411. The limiting wall 4111 is located at the front end of the bottom of the spiral slope 411 in the clockwise direction. The limiting wall 4111 can abut against the limiting crossbar 422 and continue to move clockwise. A recessed groove 4112 is provided at the top of the spiral slope 411. Without external force, the crossbar 422 enters the groove 4112 to form a limiting stop. Under external force, the crossbar 422 can disengage from the limiting groove 4112 and continue to move.

[0056] To ensure the stability of the rotating assembly 4 during rotation, adjacent retaining rings 412 are arranged around the outside of the spiral ramp 411. The retaining rings 412 are circles with the center of the spiral ramp 411 as the center. The end sidewalls of the crossbar 422 abut against the inner sidewall of the retaining ring 412. The height of the retaining ring 412 is set higher than the height of the spiral ramp 411. This ensures that the crossbar 422 always abuts against the inner sidewall of the retaining ring 412 during the movement on the spiral ramp 411, forming a limit to ensure the consistency of the rotation trajectory and prevent wobbling or deviation.

[0057] To facilitate the application of external force to operate the rotating component 4 during use, other components can be used to cooperate with the rotating base 41. These components can be common electric components capable of rotation, such as micro motors, or common manual components such as turntables or wrenches, which act on the rotating base 41 to make it rotate. In this invention, a top cover component is preferably used to cooperate with the rotating base 41 for convenient hand application, thus improving both the ease of use and the aesthetics of the sealed container. The top cover component mainly adopts two embodiments: the first embodiment uses a top cover A5, located inside the base cover 1; the second embodiment uses a top cover B6, located outside the base cover 1 and covering it.

[0058] In the first embodiment, both the top cover A5 and the rotating seat 41 are disposed inside the base cover 1 and can rotate relative to the base cover 1. Rotating the top cover A5 causes the rotating seat 41 to rotate synchronously. Since the top cover A5 and the rotating seat 41 are inside the base cover 1, the base cover 1 and the tank body 8 do not need to participate in the rotation during the process of the rotating assembly 4 sealing the can. Therefore, the base cover 1 and the tank body 8 can adopt various shapes; that is, the shape of the sealed can be a cylinder, cuboid, or other cylindrical shapes. The top cover A5 and the rotating seat 41 can be integrally formed, for example, as shown in the figure. Figure 8 As shown, the rotating seat 41 is an inner cylinder, and the top cover A5 is an outer cylinder. A through cavity 413 is located on the main body of the rotating seat 41, and an internal thread 414 is located on the inner surface of the through cavity 413. Rotating the side wall of the top cover A5 by hand synchronously drives the rotating seat 41, causing the rotating assembly 4 to work. The top cover A5 and the rotating seat 41 can also be connected separately. The connection method can be common methods such as bonding, welding, and riveting. Preferably, such as... Figure 19 and Figure 20 As shown, the top cover A5 is made of plastic material. A longitudinal first protrusion 52 is provided on the inner wall of the top cover A5, and a longitudinal guide groove 415 is provided through the outer wall of the rotating seat 41. The first protrusion 52 and the guide groove 415 are preferably two axially symmetrical pieces. A transverse annular second protrusion 53 is provided at the bottom end of the inner wall of the top cover A5, and an annular limiting groove 416 is provided at the bottom end of the outer wall of the rotating seat 41. The first protrusion 52 enters the guide groove 415 from top to bottom, achieving longitudinal insertion and limiting of the top cover A5 and the rotating seat 41, preventing relative movement when they rotate horizontally. During the process of the top cover A5 being fitted downwards onto the outer side of the rotating seat 41, the second protrusion 53 undergoes plastic deformation and expands outwards under the support of the rotating seat 41. After entering the limiting groove 416, the second protrusion 53 recovers its deformation and forms a limiting position with the limiting groove 416, ensuring that the top cover A5 is vertically limited and does not detach from the rotating seat 41. To further improve the convenience of hand operation of the top cover A5, such as... Figure 12 As shown, a lever 51 is horizontally arranged on the outer edge of the top cover A5. Moving the lever 51 can drive the top cover A5 to rotate. On the one hand, the lever 51 increases the torque because it is extended outward, making it easier to move with your fingers. On the other hand, the base cover 1 can be held with one hand, and the lever 51 can be moved with the fingers of that hand, making one-handed operation more convenient.

[0059] In the second embodiment, the sealed container is set to a cylindrical shape, such as... Figure 13 and Figure 15As shown, the top cover B6 is fastened to the outside of the base cover 1 and can rotate relative to the base cover 1. Relative rotation is only possible if the top cover B6, the base cover 1, the bottom cover 2, and the tank body 8 are all circular. Other shapes, such as rectangles, cannot achieve relative rotation because the top cover B6 fastens to the base cover 1. Rotating the top cover B6 causes the rotating seat 41 to rotate synchronously. The fact that the top cover B6 is fastened to the outside of the base cover 1 results in a greater torque generated when a hand grips the outer side of the top cover B6 compared to the first embodiment (the outer edge of the force is on the outside of the base cover 1, while in the first embodiment the outer edge of the force is on the inside of the base cover 1). It should be noted that although the component indicated by the reference numeral for the top cover B6 in the accompanying drawings of this embodiment appears similar in shape to the reference numeral for the base cover 1 in the first embodiment, it is not the base cover. The reference numeral for the base cover 1 in this embodiment is... Figure 13 , Figures 15-17 In this embodiment, as... Figure 13 and Figure 17 As shown, the top cover B6 and the rotating base 41 can be integrally formed. Alternatively, the top cover B6 and the rotating base 41 can be connected and fixed separately. The connection method can employ common methods such as bonding, welding, and riveting. Preferably, as shown... Figure 16 As shown, a protruding locking block 91 is provided on the outer side of the rotating seat 41, and a locking hole 92 with an open bottom is provided on the side wall of the central ring hole of the top cover B6. After the locking block 91 enters the locking hole 92 from the bottom of the rotating seat 41, it creates a limit, so that the rotating seat 41 and the top cover B6 are fixedly connected. The locking block 91 and the locking hole 92 are preferably set as two axially symmetrical ones.

[0060] In this embodiment, because the top cover B6 has a large area, to prevent the top cover B6 from shaking during rotation, such as Figures 15-17 As shown, multiple spaced arc-shaped grooves 61 can be opened around the circumference of the top cover B6. Multiple limiting posts 15, the same number as the arc-shaped grooves 61, are provided on the upper surface of the base cover 1. The limiting posts 15 are limited in the arc-shaped grooves 61 and can rotate relative to the top cover B6. The multiple arc-shaped grooves 61 are preferably arranged in different arc segments of the same circle. Preferably, the arc-shaped grooves 61 and the limiting posts 15 are arranged in pairs in 3 groups.

[0061] In this embodiment, in order to cover the top cover B6 and make the sealed container more aesthetically pleasing, a top cover 7 can be provided on the upper surface of the top cover B6. The top cover 7 is fixedly connected to the edge of the top cover B6 and / or the limiting post 15 by means of bonding, welding, riveting or snap-fitting. The top cover 7 can also be integrally formed with the top cover B6.

[0062] As can be seen from the above description, the above embodiments achieve the following technical effects: on the one hand, the sealing of the base cover and the tank is achieved by the up and down movement of the sealing ring through the operation of the rotating component, and the structure is simple; on the other hand, the rotating seat can cooperate with the top cover with different structures to expand the practical application scenarios of the sealing tank, resulting in more derivative products of the sealing tank and greater market competitiveness.

[0063] The above description is merely an exemplary embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. The scope of protection of the present utility model is determined by the appended claims.

Claims

1. A rotary sealing container, comprising a base cover and a bottom cover disposed vertically, the base cover and the bottom cover being spaced apart vertically, a sealing ring being disposed on the outer circumferential edge of the bottom cover, and a container body with an open upper end, the bottom cover being placed inside the upper part of the container body, characterized in that: The outer edge of the base cover is provided with an outer edge A in the horizontal direction, and a lower edge A extending downward from the base cover is provided on the inner side of the outer edge A. The outer edge A is placed on the opening of the tank body, and the lower edge A is close to the inner wall of the tank body. The inner end of the sealing ring is fixedly connected to the bottom cover, and the outer end is placed on the outer wall of the outer edge A. It also includes a rotating assembly, which includes a rotating seat disposed on the upper surface of the base cover and a rotating column fixedly connected to the center of the upper surface of the bottom cover. The base cover has a central hole in the middle, the rotating seat has a through cavity in the middle, and the rotating column passes through the central hole and the through cavity and is helically connected to the rotating seat. In the default state, the bottom cover is away from the base cover. Rotating the rotating seat clockwise causes the rotating column to rise and pull the bottom cover closer to the base cover. The sealing ring rises simultaneously, causing its outer end to move upward and outward to seal the gap between the outer edge A and the inner wall of the tank. The bottom cover continues to rise, reducing the air density inside the tank and creating negative pressure. The base cover then securely seals itself to the tank. Rotating the rotating seat counterclockwise causes the bottom cover to fall, causing the outer end of the sealing ring to move away from the gap between the outer edge A and the inner wall of the tank. Outside air enters the tank, and the seal is released.

2. A rotary sealing container according to claim 1, characterized in that: The cavity is configured as a cylinder, the inner wall of the cavity is provided with an internal thread, the outer wall of the upper end of the rotating column is provided with an external thread, and the rotating seat and the rotating column are helically connected through the external thread and the internal thread.

3. A rotary sealing container according to claim 1, characterized in that: The cavity is surrounded by two centrally symmetrical spiral ramps, which are slopes that gradually descend from high to low in a clockwise direction. A horizontal bar is provided at the center of the top of the rotating column, and the bottom walls of the two ends of the horizontal bar are placed on the slope of the spiral ramp.

4. A rotary sealing container according to claim 3, characterized in that: A limiting wall is provided adjacent to the bottom end of the spiral slope, and the limiting wall can abut against and limit the horizontal bar to continue moving in a clockwise direction; a recessed groove is provided at the top end of the spiral slope, and the horizontal bar enters the groove to stop moving when no external force is applied, and can disengage from the groove to continue moving when an external force is applied.

5. A rotary sealing container according to claim 4, characterized in that: An adjacent retaining ring is arranged around the outside of the spiral ramp, the height of the retaining ring being higher than the height of the spiral ramp, and the end sidewalls of the crossbar abut against the inner sidewall of the retaining ring.

6. A rotary sealing container according to any one of claims 1-5, characterized in that: The lower end of the lower edge A is set as an inclined surface that slopes from the outside to the inside, and the outer end of the sealing ring is placed on the inclined surface and can move up and down along the inclined surface.

7. A rotary sealing container according to claim 6, characterized in that: The base cover is further provided with a lower edge B extending downwards, and the bottom cover is provided with an upper edge extending upwards, the upper edge being fitted over the outside of the lower edge B.

8. A rotary sealing container according to any one of claims 1-5, characterized in that: It also includes a top cover A, and both the top cover A and the rotating seat are disposed inside the base cover and can rotate relative to the base cover. When the top cover A is rotated, the rotating seat rotates synchronously.

9. A rotary sealing container according to claim 8, characterized in that: The top cover A is made of plastic material. A longitudinal first protruding ridge is provided on the inner wall of the top cover A. A longitudinal guide groove is provided through the outer wall of the rotating seat. A second annular protruding ridge is provided laterally at the bottom end of the inner wall of the top cover A. A limit groove is provided at the bottom end of the outer wall of the rotating seat.

10. A rotary sealing container according to claim 9, characterized in that: A lever is horizontally arranged on the outer edge of the top cover A. Moving the lever can cause the top cover A to rotate.

11. A rotary sealing container according to claim 6, characterized in that: The sealed container is cylindrical in shape and includes a top cover B. The top cover B covers the outside of the base cover and can rotate relative to the base cover. When the top cover B is rotated, the rotating seat rotates synchronously.

12. A rotary sealing container according to claim 11, characterized in that: The top cover B is integrally formed with the rotating seat or is fixedly connected by a locking block and a locking hole.

13. A rotary sealing container according to claim 12, characterized in that: The top cover B has multiple spaced arc-shaped grooves on its circumference, and the base cover has multiple limiting posts on its upper surface, the same number as the arc-shaped grooves. The limiting posts are limited within the arc-shaped grooves and can rotate relative to the top cover B.

14. A rotary sealing container according to claim 13, characterized in that: It also includes a top cover, which is disposed on the upper surface of the top cover B.

15. A rotary sealing container according to claim 14, characterized in that: The top cover is engaged and fixed to the edge of the top cover B and / or the limiting post, or is integrally formed with the top cover B.

16. A rotary sealing container according to any one of claims 1-5, characterized in that: It also includes a spring sleeved on the outside of the rotating column. The upper end of the spring abuts against the bottom surface of the base cover and the lower end abuts against the top surface of the bottom cover, so that the bottom cover is away from the base cover in its natural state. When the bottom cover is subjected to force and rises, the spring is compressed and moves closer to the base cover.

17. A rotary sealing container according to claim 16, characterized in that: The top surface of the bottom cover is provided with a protruding annular ring, and the spring is limited within the annular ring to prevent shaking.

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