Rotary sealing tank

Abstract

The invention relates to a rotary sealing tank which comprises a base cover and a bottom cover which are arranged up and down, the base cover and the bottom cover are arranged up and down at an interval, a sealing ring is arranged on the circumferential outer edge of the bottom cover, the rotary sealing tank further comprises a tank body with the upper end open, the bottom cover is arranged at the upper end in the tank body, and the outer edge of the base cover is transversely arranged to be an outer edge A; a lower edge A extending downwards from the base cover is arranged 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 arranged on the outer side wall of the outer edge A; the rotating assembly comprises a rotating seat arranged on the upper surface of the base cover and a rotating column fixedly connected with the center of the upper surface of the bottom cover, a center hole is formed in the middle of the base cover, a through cavity is formed in the middle of the rotating seat, and the rotating column penetrates through the center hole and the through cavity to be spirally and rotationally connected with the rotating seat.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of storage products, in particular to a rotary sealing jar. BACKGROUND

[0002] At present, when food or articles are stored, sealing jars are often used to isolate moisture and certain gases and odors in the air. A sealing cover disclosed in Chinese patent CN112849720B includes a first cover body, a second cover body movably arranged at the lower end of the first cover body, a sealing ring arranged at the periphery of the first cover body or the second cover body, the sealing ring being expanded outwardly when the first cover body and the second cover body are moved to a certain distance, thereby sealing the port of the container to be fitted, a locking structure for driving the first cover body and the second cover body to move closer to or away from each other, the locking structure including a middle part of the first cover body provided with a placing groove, at least two lever rods arranged in the placing groove, the inner ends of the lever rods being arranged in the placing groove, and the outer ends of the lever rods extending out of the placing groove 19 and hooking the second cover body, a button assembly arranged in the placing groove, the inner ends of the lever rods being pressed by the button assembly, so that the outer ends of the lever rods drive the second cover body to move closer to or away from the first cover body, and the button assembly including a pressing cap and a bounce core assembly, the pressing cap being locked by the bounce core assembly when pressed for the first time, and being released by the bounce core assembly when pressed again.

[0003] However, in this technical solution, in order to achieve the locking and sealing of the first cover body and the second cover body by pressing the button, not only the lever rods, the placing groove, the connecting blocks and other components for relative movement of the two are needed, but also the pressing cap, the bounce core assembly and other components for locking or releasing the relative movement of the two are needed, which not only has a complex structure and high production cost, but also the long-term use of a certain part damage will cause the whole to be unable to work, and the stability is poor. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application aims to provide a rotary sealing jar with simple structure and high stability.

[0005] The above technical purpose of the present application is achieved by the following technical scheme:

[0006] The application discloses a rotary sealing tank which comprises a base cover and a bottom cover arranged in a top-bottom mode, the base cover and the bottom cover are arranged in a top-bottom mode, the bottom cover is provided with a sealing ring on the circumferential outer edge, and the tank body is provided with an upper opening; the bottom cover is arranged at the upper end of the tank body, the outer edge of the base cover is provided with an outer edge A arranged in a transverse mode, the inner side of the outer edge A is provided with a lower edge A extending downward from the base cover, the outer edge A is arranged 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 arranged on the outer side wall of the outer edge A; the rotary assembly comprises a rotary seat arranged on the upper surface of the base cover and a rotary column fixedly connected to the center of the upper surface of the bottom cover; the center of the base cover is provided with a center hole, the center of the rotary seat is provided with a through cavity, and the rotary column is screw-connected to the rotary seat by penetrating the center hole and the through cavity; in a default state, the bottom cover is away from the base cover, the rotary seat is rotated clockwise, the rotary column is lifted to pull the bottom cover to be close to the base cover, the sealing ring is synchronously lifted to move the outer end of the sealing ring upward and outward to the gap between the outer edge A and the inner wall of the tank body so as to seal the gap, the bottom cover is continuously lifted to reduce the air density in the tank body to generate negative pressure, and the base cover is tightly sealed on the tank body; the rotary seat is rotated counterclockwise, the bottom cover is lowered to make the outer end of the sealing ring away from the gap between the outer edge A and the inner wall of the tank body, external air enters the tank body, and the sealing state is released.

[0007] According to the rotary sealing tank provided by the application, the through cavity is arranged in a cylindrical mode, the inner side wall of the through cavity is provided with an internal thread, the outer side wall of the upper end of the rotary column is provided with an external thread, and the rotary seat and the rotary column are screw-connected through the external thread and the internal thread.

[0008] According to the rotary sealing tank provided by the application, the periphery of the through cavity is provided with two center-symmetrical spiral slopes, the spiral slopes are arranged in a mode of gradually descending from high to low in the clockwise direction, the top end of the rotary column is provided with a horizontal rod, and the bottom walls of the two ends of the horizontal rod are arranged on the slope surfaces of the spiral slopes.

[0009] According to the rotary sealing tank provided by the application, the bottom end of the slope surface of the spiral slope is provided with a limiting wall, the limiting wall can abut against the horizontal rod to continue to move in the clockwise direction, and the top end of the slope surface of the spiral slope is provided with a concave groove, the horizontal rod is arranged in the concave groove to limit the movement under the action of no external force, and the horizontal rod can move continuously by being separated from the concave groove under the action of external force.

[0010] According to the rotary sealing tank provided by the application, the periphery of the spiral slope is provided with adjacent blocking rings, the height of the blocking rings is higher than that of the spiral slope, and the side walls of the two ends of the horizontal rod abut against the inner side walls of the blocking rings.

[0011] According to some embodiments of the application, the lower end of the lower edge A is provided with an inclined surface arranged in a mode of inclining from outside to inside, and the outer end of the sealing ring is arranged on the inclined surface and can move upward and downward along the direction of the inclined surface.

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

[0013] According to some embodiments of the present application, the top cover A and the rotating seat are both arranged inside the base cover and can rotate relative to the base cover, and rotating the top cover A can synchronously rotate the rotating seat.

[0014] According to some embodiments of the present application, the top cover A is made of plastic material, a longitudinal first protruding rib is arranged on the inner wall of the top cover A, a longitudinal guide groove is arranged through the outer wall of the rotating seat, a ring-shaped second protruding rib is arranged horizontally on the bottom end of the inner wall of the top cover A, and a ring-shaped limiting groove is arranged on the bottom end of the outer wall of the rotating seat.

[0015] According to some embodiments of the present application, a lever is arranged horizontally on the outer edge of the top cover A, and rotating the lever can rotate the top cover A.

[0016] According to some embodiments of the present application, the sealing tank is cylindrical in shape, and further comprises a top cover B, which is covered outside the base cover and can rotate relative to the base cover, and rotating the top cover B can synchronously rotate the rotating seat.

[0017] According to some embodiments of the present application, the top cover B is integrally formed with the rotating seat or is fixedly connected with the rotating seat through a clamping block and a clamping hole.

[0018] According to some embodiments of the present application, a plurality of spaced arc-shaped grooves are arranged circumferentially on the surface of the top cover B, and a plurality of limiting columns are arranged on the upper surface of the base cover, the number of the limiting columns being the same as that of the arc-shaped grooves, and the limiting columns are limited in the arc-shaped grooves and can rotate relative to the top cover B.

[0019] According to some embodiments of the present application, a top cover is further arranged on the upper surface of the top cover B.

[0020] According to some embodiments of the present application, the top cover is fixedly connected with the edge of the top cover B and / or the limiting column or is integrally formed with the top cover B.

[0021] According to some embodiments of the present application, a spring is further sleeved outside the rotating column, the upper end of the spring abuts against the bottom surface of the base cover, and the lower end of the spring abuts against the top surface of the bottom cover, so that the bottom cover is away from the base cover in a natural state, and the bottom cover can be lifted to compress the spring and approach the base cover.

[0022] According to some embodiments of the present application, the top surface of the bottom cover is provided with a protruding ring-shaped ring, and the spring is limited in the ring-shaped ring to avoid shaking.

[0023] Compared with the prior art, the application has the beneficial effects that: through the work of the rotating assembly, the relative rotation of the base cover and the bottom cover generates the relative movement of approaching or moving away from each other, the sealing ring moves up and down to seal or unseal the gap between the outer edge A and the tank body, the number of parts is small, the structure is simple, the production cost is reduced, and the stability and service life of the sealed tank are improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural cross-sectional view of the first embodiment in an unsealed state;

[0025] Figure 2 It is a structural cross-sectional view of the first embodiment in a sealed state;

[0026] Figure 3 It is a structural cross-sectional view of the second embodiment in an unsealed state;

[0027] Figure 4 It is a structural cross-sectional view of the second embodiment in a sealed state;

[0028] Figure 5 It is a structural view of the rotating seat of the first embodiment;

[0029] Figure 6 It is a structural view of the rotating column and the bottom cover of the first embodiment;

[0030] Figure 7 It is a structural view of the rotating assembly and the bottom cover of the first embodiment;

[0031] Figure 8 It is an exploded structural cross-sectional view of the rotating assembly and the bottom cover of the second embodiment;

[0032] Figure 9 It is a structural view of the sealed tank as a whole;

[0033] Figure 10 It is an exploded structural view of the sealed tank as a whole;

[0034] Figure 11 It is a structural view of the sealed tank as a whole;

[0035] Figure 12 It is a structural view of the sealed tank as a whole;

[0036] Figure 13 It is an exploded view of the first embodiment of the structure of the top cover B and the base cover and the bottom cover;

[0037] Figure 14 It is a bottom perspective view of the base cover;

[0038] Figure 15 It is a structural view of the sealed tank as a whole;

[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 For the sealed tank with top cover perspective view;

[0042] Figure 19 For the top cover A and rotating seat exploded structure top view;

[0043] Figure 20 For the top cover A and rotating seat exploded structure bottom view

[0044] Reference signs:

[0045] 1, base cover; 11, outer edge A; 12, lower edge A; 121, inclined surface; 13, lower edge B; 14, center hole; 15, limiting column; 2, bottom cover; 21, upper edge; 3, sealing ring; 4, rotating assembly; 41, rotating seat; 411, spiral slope; 4111, limiting wall; 4112, groove; 412, check ring; 413, through cavity; 414, internal thread; 415, guide groove; 416, limiting groove; 42, rotating column; 421, external thread; 422, crossbar; 5, top cover A; 51, lever; 52, first convex rib; 53, second convex rib; 6, top cover B; 61, arc-shaped groove; 7, top cover; 8, tank body; 91, clamping block; 92, clamping hole; 101, annular ring; 102, spring DETAILED DESCRIPTION

[0046] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0047] The present application will be further described in detail below in conjunction with the accompanying drawings:

[0048] A rotary sealed tank, as shown in Figures 1-20 , comprises a base cover 1 and a bottom cover 2 arranged vertically, the base cover 1 and the bottom cover 2 are arranged vertically, the bottom cover 2 can be close to the base cover 1 upward or away from the base cover 1 downward, the bottom cover 2 is provided with a sealing ring 3 on the circumferential outer edge, the sealing ring 3 is of flexible structure, preferably of rubber material, further comprising a tank body 8 with an open upper end, the bottom cover 2 is arranged inside the tank body 8 at the upper end, as shown in Figures 1-4 and Figure 14As shown, the outer edge of the base cover 1 is provided with a transversely arranged outer edge A11, and the inner side of the outer edge A11 is provided with a downward extending lower edge A12 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 provided as a horizontal plane, which can be placed on the opening top surface of the tank body 8, or the outer edge A11 can be provided as a bent surface with a downward notch, and the side wall at the opening of the tank body 8 extends into the notch to form positioning between the outer edge A11 and the side wall of the tank body 8. The inner end of the sealing ring 3 is fixedly connected to the bottom cover 2, and the outer end is placed on the outer side wall of the outer edge A11, that is, the outer end of the sealing ring is between the outer edge A11 and the tank body 8, and the outer end of the sealing ring is preferably provided as an upward and outward inclined surface. It also includes a rotating assembly 4, which includes a rotating seat 41 provided 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 lift the rotating column 42 by clockwise rotation, and the rotating column 42 can be lowered by counterclockwise rotation of the rotating seat 41. The center hole 14 is provided in the middle of the base cover 1, and the through cavity 413 is provided in the middle of the rotating seat 41. The rotating column 42 is screw-rotatably connected to the rotating seat 41 through the center hole 14 and the through cavity 413. In the default state, the bottom cover 2 is away from the base cover 1, the rotating seat 41 is rotated clockwise, the rotating column 42 is lifted to pull the bottom cover 2 upward to approach the base cover 1, and the sealing ring 3 is lifted synchronously to move the outer end of the sealing ring 3 upward and outward to the gap between the outer edge A11 and the inner wall of the tank body 8. The displacement of the sealing ring blocks the gap, and under the property of the flexible material of the sealing ring 3, the gap is further filled to completely seal the base cover 1 from the tank body 8 and the outside air. The bottom cover 2 continues to rise to increase the volume of the tank body 8, the original air in the tank body 8 reduces in density and pressure due to the increase in volume, and the air pressure in the tank body 8 is less than the outside to generate negative pressure, so that the base cover 1 is tightly sealed on the tank body 8 and is difficult to remove. The rotating seat 41 is rotated counterclockwise, the rotating column 42 is lowered under the action of its own gravity and the gravity of the connected parts, and the high external air pressure generates pressure into the tank. The downward of the rotating column 42 and the downward of the bottom cover 2 make the outer end of the sealing ring 3 away from the gap between the outer edge A11 and the inner wall of the tank body 8, and the outside air enters the tank body 8. The internal and external air pressure of the tank body 8 is the same, the sealing state is released, and the base cover 1 is removed from the tank body 8 without resistance.

[0049] To further ensure that the bottom cover 2 is away from the base cover 1 in the natural state (default state), a spring 102 can be further arranged outside 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. When the rotating seat 41 is rotated clockwise to lift the rotating column 42, the bottom cover 2 is lifted to be close to the base cover 1 by compressing the spring 102. When the rotating seat 41 is rotated counterclockwise, the spring 102 is elastically deformed to restore and push the rotating column 42 to move downward more quickly, so that the bottom cover 2 returns to the default state of being away from the base cover 1. To avoid the spring 102 from shaking on the rotating column 42, a protruding annular ring 101 can be arranged on the top surface of the bottom cover 2 to limit the spring 102 in the annular ring 101.

[0050] To make the outer end of the sealing ring 3 more accurately enter the gap between the outer edge A11 and the inner wall of the tank body 8 during movement, an inclined surface 121 inclined from outside to inside is arranged at the lower end of the lower edge A12, and the outer end of the sealing ring 3 is arranged on the inclined surface 121 and can move up and down along the direction of the inclined surface 121. As shown in Figure 1 , when the sealed tank is in the unsealed state, the outer end of the sealing ring 3 is located at the lower part of the inclined surface 121, and the outer end of the sealing ring 3 does not exceed the outer side wall of the lower edge A12 to avoid friction with the inner side wall of the tank body 8 to hinder the taking and placing of the base cover 1.

[0051] To ensure the stability of the relative up-and-down movement of the base cover 1 and the bottom cover 2, a lower edge B13 extending downward can be further arranged on the base cover 1, and an upper edge 21 extending upward is arranged on the bottom cover 2. The upper edge 21 is arranged outside the lower edge B13 to form an up-and-down movement path to ensure the stability of the movement. Preferably, the lower edge B13 is an annular wall arranged inside the lower edge A12.

[0052] The screw rotating structure of the rotating assembly 4 has the following two embodiments:

[0053] The first embodiment, as shown in Figure 3 , Figure 4 and Figure 8 , the through cavity 413 is arranged as a cylinder, an inner thread 414 is arranged on the inner side wall of the through cavity 413, and an outer thread 421 is arranged on the outer side wall of the upper end of the rotating column 42. The rotating seat 41 and the rotating column 42 are screw-connected through the outer thread 421 and the inner thread 414. It should be noted that in this embodiment, during the counterclockwise rotation of the rotating seat 41 to lower the rotating column 42, the gravity of the rotating column 42 and the connected components, the external air pressure greater than the pressure generated by the tank internal air pressure, and the elastic deformation recovery of the spring 102 together with the thread track function to make the bottom cover 2 move downward to return to the default state of being away from the base cover 1.

[0054] The second embodiment, as shown in Figure 1 , Figure 2 , Figures 5-7As shown, two center-symmetrical spiral slopes 411 are arranged around the periphery of the through cavity 413, the spiral slopes 411 are arranged as slope surfaces descending from high to low in a clockwise direction, a horizontal bar 422 is arranged at the center of the top end of the rotating column 42, the bottom wall of the two ends of the horizontal bar 422 is arranged on the slope surface of the spiral slope 411, in the default state, the horizontal bar 422 is arranged at the bottom of the slope, the sealed canister is in an unsealed state, the rotating seat 41 rotates clockwise, the horizontal bar 422 is moved from the bottom of the spiral slope 411 to the top of the spiral slope 411, the horizontal bar 422 is lifted to drive the rotating column 42 to move the bottom cover 2 close to the base cover 1, and the sealed canister is in a sealed state. Preferably, the included angle between the straight line where the bottom of the spiral slope 411 and the center of symmetry is located and the straight line where the top of the spiral slope 411 and the center of symmetry is located is 90 degrees.

[0055] In order to limit the position of the horizontal bar 422 at the bottom and top of the spiral slope 411, so that the sealed and unsealed states of the sealed box can be locked without external force, a limiting wall 4111 is arranged adjacent to the bottom end of the slope surface of the spiral slope 411, the limiting wall 4111 is arranged at the front end of the bottom of the spiral slope 411 in the clockwise direction, and the limiting wall 4111 can abut against the horizontal bar 422 to limit the clockwise movement of the horizontal bar 422; a concave groove 4112 is arranged at the top end of the slope surface of the spiral slope 411, under the action of no external force, the horizontal bar 422 enters the concave groove 4112 to form a limiting stop movement, and under the action of external force, the horizontal bar 422 can move continuously by being separated from the concave groove 4112.

[0056] In order to ensure the stability of the rotating assembly 4 during rotation, an adjacent stop ring 412 is arranged around the outside of the spiral slope 411, the stop ring 412 is a circle with the center of symmetry of the spiral slope 411 as the center, the side walls of the two ends of the horizontal bar 422 abut against the inner side walls of the stop ring 412, and the height of the stop ring 412 is arranged to be higher than the height of the spiral slope 411, so that the horizontal bar 422 can always abut against the inner side walls of the stop ring 412 to form a limiting stop during movement on the spiral slope 411, so as to ensure the consistency of the rotating track and prevent shaking or deviation.

[0057] In order to make it more convenient to apply external force to make the rotating assembly 4 work during use, other components can be matched with the rotating seat 41, the matching components can be common electric components that can generate rotation such as micro motors, or common manual components such as rotating discs and wrenches can act on the rotating seat 41 to make it rotate. In the present application, it is preferred to adopt a top cover component to match the rotating seat 41 for convenient hand force, which can not only improve the convenience of using the sealed canister, but also improve the aesthetics of the sealed canister. The top cover component mainly adopts two embodiments, the first embodiment adopts a top cover A5 arranged inside the base cover 1, and the second embodiment adopts a top cover B6 arranged outside the base cover 1 and covering the base cover 1.

[0058] In the first embodiment, the top cover A5 and the rotating seat 41 are arranged inside the base cover 1 and can rotate relative to the base cover 1, and the rotating seat 41 rotates synchronously when the top cover A5 rotates. Since the top cover A5 and the rotating seat 41 are arranged inside the base cover 1, the base cover 1 and the tank body 8 do not need to rotate during the operation of the rotating assembly 4 to realize the sealing of the sealed tank, and therefore, the base cover 1 and the tank body 8 can have various shapes, that is, the sealed tank can have a cylindrical shape, a cuboid shape, or other columnar shapes. The top cover A5 and the rotating seat 41 can be integrally formed, for example, as shown in Figure 8 , the rotating seat 41 is an inner cylinder, the top cover A5 is an outer cylinder, the through cavity 413 is arranged in the main body of the rotating seat 41, and the internal thread 414 is arranged on the inner surface of the through cavity 413. The side wall of the top cover A5 is rotated by hand to synchronously drive the rotating seat 41 to operate the rotating assembly 4. The top cover A5 and the rotating seat 41 can also be connected and fixed in a split type, and the connection mode of the two can adopt common adhesion, welding, riveting, and the like, and preferably, as shown in Figure 19 and Figure 20 , the top cover A5 is made of a plastic material, a first longitudinal rib 52 is arranged on the inner wall of the top cover A5, a longitudinal guide groove 415 is arranged through the outer side wall of the rotating seat 41, the first longitudinal rib 52 and the guide groove 415 are each preferably arranged as two axisymmetric ones, a second annular rib 53 is arranged horizontally on the bottom end of the inner wall of the top cover A5, and an annular limiting groove 416 is arranged on the bottom end of the outer side wall of the rotating seat 41. The first longitudinal rib 52 enters the guide groove 415 from top to bottom to realize the longitudinal plug-in limiting of the top cover A5 and the rotating seat 41, so that the two do not move relative to each other in the horizontal direction. During the process that the top cover A5 is downwardly sleeved on the outer side of the rotating seat 41, the second annular rib 53 is supported by the rotating seat 41 to produce plastic deformation and expand outwardly, and after the second annular rib 53 enters the limiting groove 416, the deformation is restored to form limiting with the limiting groove 416, so that the top cover A5 is limited on the rotating seat 41 in the vertical direction and does not come off. In order to further improve the convenience of the hand operation of the top cover A5, as shown in Figure 12 , a lever 51 is arranged horizontally on the outer edge of the top cover A5, and the lever 51 is rotated to drive the top cover A5 to rotate. On the one hand, the lever 51 is elongated outwardly to improve the torque, and the finger is more labor-saving when it is operated. On the other hand, the palm of a hand can hold the base cover 1, and the finger of the hand can operate the lever 51, so that the operation is more convenient with one hand.

[0059] In the second embodiment, the sealed tank is arranged in a cylindrical shape, as shown in Figure 13 and Figure 15As shown, the top cover B6 is buckled outside the base cover 1 and can rotate relative to the base cover 1, only when the top cover B6, the base cover 1, the bottom cover 2 and the tank body 8 are all circular, the relative rotation can be realized, while other shapes such as rectangle cannot realize the relative rotation movement due to the buckling of the top cover B6 to the base cover 1. Rotating the top cover B6, the rotating seat 41 rotates synchronously, and the buckling of the top cover B6 outside the base cover 1 makes the torque generated after the hand holds the outside surface of the top cover B6 larger than that of the first embodiment (the force is applied outside the base cover 1, while the force is applied inside the base cover 1 in the first embodiment). It should be pointed out that the components indicated by the reference numerals of the top cover B6 in the drawings of the present embodiment, although they look similar in shape to the reference numerals of the base cover 1 in the first embodiment, are not the base cover, and the base cover 1 of the present embodiment is marked in Figure 13 、 Figures 15-17 As shown in Figure 13 and Figure 17 , the top cover B6 and the rotating seat 41 can be integrally formed. The top cover B6 and the rotating seat 41 can also be fixedly connected in a split body manner, and the connection mode of the two can adopt common adhesion, welding, riveting and the like, and preferably, as shown in Figure 16 , a protruding clamping block 91 is arranged on the outside surface of the rotating seat 41, and a clamping hole 92 with an open bottom end is arranged on the side wall of the central hole of the top cover B6, and the clamping block 91 is limited after entering the clamping hole 92 from the bottom end of the rotating seat 41, so that the rotating seat 41 and the top cover B6 are fixedly connected, and the clamping block 91 and the clamping hole 92 are respectively preferably arranged as two axisymmetric groups.

[0060] In the present embodiment, since the area of the top cover B6 is large, in order to avoid the top cover B6 from shaking during rotation, as shown in Figures 15-17 , a plurality of spaced arc-shaped grooves 61 can be arranged on the surface of the top cover B6, and a plurality of limiting columns 15 same in number with the arc-shaped grooves 61 are arranged on the upper surface of the base cover 1, the limiting columns 15 are limited in the arc-shaped grooves 61 and can rotate relative to the top cover B6, and the plurality of arc-shaped grooves 61 are preferably arranged on different arc segments of the same circle, and preferably, the arc-shaped grooves 61 and the limiting columns 15 are arranged in pairs as three groups.

[0061] In the present embodiment, in order to shield the top cover B6 and make the sealed tank more beautiful, a top cover 7 can be arranged on the upper surface of the top cover B6, and the top cover 7 and the edge of the top cover B6 and / or the limiting column 15 are fixedly connected by adhesion, welding, riveting or clamping, or the like, and the top cover 7 can also be integrally formed with the top cover B6.

[0062] From the above description, it can be seen that the above-mentioned embodiments achieve the following technical effects: on the one hand, the working of the rotating assembly realizes the sealing or not of the base cover and the tank body through the up-down movement of the sealing ring, and the structure is simple; on the other hand, the rotating seat can be matched with top covers of different structures to expand various practical scenarios of the sealed tank, so that the sealed tank has more derivative products and is more competitive in the market.

[0063] The above-described exemplary embodiments of the present application are merely given as non-limiting examples, and it should be understood that the present application is not limited to them but covers any modifications of the present application within the scope of the appended claims.

Claims

1. A rotary sealed tank, comprising a base cover and a bottom cover arranged in up and down, the base cover and the bottom cover are arranged in up and down interval, the bottom cover is provided with a sealing ring on the circumferential outer edge, further comprising a tank body with an open upper end, the bottom cover is arranged in the tank body interior upper end, characterized in that: the outer edge of the base cover is provided with a horizontal outer edge A, the inner side of the outer edge A is provided with a lower edge A extending downward from the base cover, the outer edge A is arranged 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 arranged on the outer side wall of the outer edge A; further comprising a rotating assembly, the rotating assembly comprises a rotating seat arranged on the upper surface of the base cover and a rotating column fixedly connected with the center of the upper surface of the bottom cover, the center hole is arranged in the middle of the base cover, the through cavity is arranged in the middle of the rotating seat, and the rotating column is screwedly connected with the rotating seat through the center hole and the through cavity; in the default state, the bottom cover is away from the base cover, the rotating seat is rotated clockwise, the rotating column is pulled up to pull the bottom cover close to the base cover, the sealing ring is synchronously pulled up to move the outer end of the sealing ring upward and outward to the gap between the outer edge A and the inner wall of the tank body to seal it, the bottom cover continues to rise to reduce the air density in the tank body to generate negative pressure, and the base cover is tightly sealed on the tank body; the rotating seat is counterclockwise rotated, the bottom cover is lowered to make the outer end of the sealing ring away from the gap between the outer edge A and the inner wall of the tank body, and external air enters the tank body to release the sealing state. the through cavity is provided as a cylinder, the inner side wall of the through cavity is provided with an internal thread, the outer side wall of the upper end of the rotating column is provided with an external thread, and the rotating seat and the rotating column are screw-connected through the external thread and the internal thread. the through cavity is provided with two center-symmetrical spiral slopes around the periphery, the spiral slopes are provided as slope surfaces descending slowly from high to low in the clockwise direction, the top end of the rotating column is provided with a horizontal rod in the center, and the bottom wall of the two ends of the horizontal rod is arranged on the slope surface of the spiral slope. a limiting wall is arranged adjacent to the bottom end of the slope surface of the spiral slope, the limiting wall can limit the clockwise continuous movement of the horizontal rod; a concave groove is arranged at the top end of the slope surface of the spiral slope, the horizontal rod enters the concave groove to form a limiting stop movement under the action of no external force, and the horizontal rod can continue to move away from the limiting of the concave groove under the action of external force. a stop ring is arranged adjacent to the outer side of the spiral slope, the height of the stop ring is higher than that of the spiral slope, and the side wall of the two ends of the horizontal rod abuts against the inner side wall of the stop ring.

2. A rotary seal can according to claim 1, wherein: the lower end of the lower edge A is provided as an inclined surface inclined from outside to inside, and the outer end of the sealing ring is arranged on the inclined surface and can move up and down along the direction of the inclined surface.

3. A rotary seal canister as defined in claim 1, wherein: the base cover is further provided with a downward extending lower edge B, the bottom cover is provided with an upward extending upper edge, and the upper edge is sleeved outside the lower edge B.

4. A rotary seal canister according to claim 3, wherein: further comprising a top cover A, the top cover A and the rotating seat are arranged inside the base cover and can relatively rotate with the base cover, and the rotating seat is synchronously rotated by rotating the top cover A.

5. A rotary seal canister according to claim 4, wherein: ​ 6. A rotary seal canister according to any one of claims 1-5, characterized in that: ​ 7. A rotary seal canister according to claim 6, wherein: ​ 8. A rotary seal tank according to any one of claims 1-5, characterized in that: ​ 9. A rotary seal canister according to claim 8, wherein: The top cover A is made of plastic material, a first longitudinal rib is arranged on the inner wall of the top cover A, a longitudinal guide groove is arranged through the outer wall of the rotating seat, a second annular rib is arranged horizontally on the bottom end of the inner wall of the top cover A, and an annular limiting groove is arranged on the bottom end of the outer wall of the rotating seat.

10. A rotary seal canister according to claim 9, wherein: A horizontal stirring rod is arranged on the outer edge of the top cover A, and the stirring rod can drive the top cover A to rotate.

11. A rotary seal canister as defined in claim 6, wherein: The sealing pot is in the shape of a cylinder, further comprises a top cover B, the top cover B is buckled on the outer side of the base cover and can rotate relative to the base cover, and the top cover B is rotated to drive the rotating seat to rotate synchronously.

12. A rotary seal canister according to claim 11, wherein: The top cover B is integrally formed with the rotating seat or is fixedly connected through clamping blocks and clamping holes.

13. A rotary seal canister according to claim 12, wherein: A plurality of spaced arc-shaped grooves are arranged on the surface of the top cover B, a plurality of limiting columns are arranged on the upper surface of the base cover, the number of the limiting columns is same as that of the arc-shaped grooves, and the limiting columns are limited in the arc-shaped grooves and can rotate relative to the top cover B.

14. A rotary seal canister according to claim 13, wherein: A top cover is arranged on the upper surface of the top cover B.

15. A rotary seal canister according to claim 14, wherein: The top cover is fixedly connected with the edge of the top cover B and / or the limiting column through clamping or is integrally formed with the top cover B.

16. A rotary seal canister according to any one of claims 1-5, wherein: A spring is sleeved on the outer side of the rotating column, the upper end of the spring abuts against the bottom surface of the base cover, the lower end of the spring abuts against the top surface of the bottom cover, the bottom cover is away from the base cover in a natural state, and the bottom cover is lifted under force to drive the spring to be compressed and approach the base cover.

17. A rotary seal canister according to claim 16, wherein: An annular ring is arranged on the top surface of the bottom cover, and the spring is limited in the annular ring to avoid shaking.

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