Gear tooth staggered and stacked type follow-up sealing cover device

Abstract

The utility model relates to a follow-up sealing cover device with staggered and overlapped gear teeth. The utility model aims to provide a gear tooth staggered type follow-up cover sealing device which is frequently used on a container opening, can be automatically lifted, opened and closed, and moves for a certain distance in a container. By controlling the jacking push rod and the upper cover lifting frame on the container barrel frame, the height of the follow-up sealing cover above the opening of the container barrel is adjusted, so that the feeding space between the upper cover main body and the container barrel is controlled; the upper cover main body and the upper cover fixing inner gear ring are separated or locked by controlling the rotation of the two groups of gear tooth staggered structures, so that the upper opening of the container cylinder is opened or closed; the follow-up sealing cover can move up and down for a certain distance along the inner wall of the container cylinder after the upper cover is locked and the inner gear ring is fixed. By controlling the device to be automatically opened, closed and lifted relative to a container barrel and move up and down in the container, the functions of rapidly feeding materials into the container and meeting the requirement for frequently using a follow-up sealing cover can be achieved.

Description

Technical Field

[0001] The utility model belongs to the field of movable sealing covers for containers, in particular to a gear-staggered follow-up sealing device which is frequently used on a container mouth, can be automatically lifted and opened, and can move a certain distance inside the container. Background Art

[0002] There are many styles of movable covers for containers, but it is rare to see movable covers that can be frequently raised and lowered, opened and closed at any time, and the covers themselves can enter the container and move a certain distance. Common covers include screw-on covers and plug-on covers. Screw-on covers are often used for containers that do not require high closure. Generally, they are designed with a spiral mouth on the outside to play a fastening role. This type of design can meet the requirement of partially entering the container, but the part entering the container is usually shallow, and this type of cover usually cannot move a certain distance because the spiral mouth of the container will move after being locked, which will cause the closure to be damaged. In addition, the structural design that ensures the frequent automatic opening and closing control of the spiral fastening mechanism and allows the cover to move in the container is very complex, and the reliability and cost issues are difficult to overcome. The plug-cap type closure is usually a typical representative of the principle similar to that of a red wine cork. It can also meet the requirement that part of the closure body enters the container, but the length of the entry part cannot be too long, because the longer inner plug will have great friction with the inner wall of the container, and when the force is uneven, the closure and the container wall will be deformed and blocked due to the unbalanced friction, making it difficult for the plug-cap type closure to move, and it is impossible to realize frequent automatic opening and closing of the closure, and the sealing effect of the closure cannot be guaranteed. In summary, the existing closures have the defects of being immovable or having a very short moving distance in the container, and it is difficult to ensure that the closure is tight after frequent opening and closing, which hinders frequent use and cannot run smoothly, and needs to be improved.

[0003] In view of the above situation, providing a cover that is frequently used on the container mouth, can be automatically lifted and opened, and can move a certain distance inside the container has become a problem to be solved. The gear staggered follow-up cover device of the utility model can effectively solve these problems. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a cover which is frequently used on the container mouth, can be automatically lifted and opened, and can move a certain distance inside the container, and is a gear staggered follow-up cover device which can be used repeatedly.

[0005] The utility model discloses a gear staggered follow-up capping device, the main structure of which comprises a lifting push rod, an upper cover lifting frame, a guide rod, a movable cone sleeve gear ring, an upper cover lifting inner gear ring, an upper cover outer gear disc, an upper cover outer sealing ring, an upper cover main body, a rotating moving ring, a fan-shaped fixing part, a rotating push rod, an upper cover fixed inner gear ring, a guide rod sliding positioning device, a rotary flange seat, a container tube sealing ring, and a positioning cone block. The container tube is fixed on the container tube frame, and the container tube is equipped with an inner lifting mechanism inside the container tube, which can drive the upper cover fixed inner gear ring to move up and down in the container tube.

[0006] The lower end of the lifting push rod is fixed on the container tube frame outside the container tube, the upper end of the lifting push rod is fixed to the two ends of the upper cover lifting frame, and an upper cover lifting inner gear ring is fixed in the middle of the upper cover lifting frame. When the lifting push rod is extended or shortened, the upper cover lifting frame and the upper cover lifting inner gear ring fixed thereto rise and fall.

[0007] A guide rod sliding positioning device is fixed at the center of the upper cover lifting frame, and a guide rod that can move up and down is installed in the guide rod sliding positioning device. The guide rod passes through the center of the guide rod sliding positioning device of the upper cover lifting frame, the center of the positioning cone block, and the center of the movable cone sleeve gear ring from top to bottom, and the lower end of the guide rod directly reaches the central groove of the upper cover body and is fixedly connected to the upper cover body. The middle part of the guide rod has a thread that matches the central thread of the positioning cone block. When the thread on the positioning cone block is tightened, the conical surface of the positioning cone block tightly fixes the movable cone sleeve gear ring on the guide rod.

[0008] One end of the rotating push rod is hinged on the fan-shaped fixing piece, and the other end of the rotating push rod is hinged on the upper cover body.

[0009] The bottom of the movable cone sleeve gear ring is fixedly connected to the rotary flange seat, the top circular edge of the movable cone sleeve gear ring is gear-toothed, and the top edge gear teeth of the movable cone sleeve gear ring match the notch size of the inner ring teeth of the upper cover lifting inner gear ring.

[0010] The swivel flange seat is a flange body with a bearing fixed in the center. The guide rod passes through the center of the swivel flange seat from top to bottom, and one end of the fan-shaped fixing piece is fixedly connected to the swivel flange seat, and the other end of the fan-shaped fixing piece is fixed to the inner side surface of the outer gear disk of the upper cover.

[0011] When the upper cover body contacts the inner side of the upper cover outer sealing ring, the lower bottom surface of the gear teeth at the top circular edge of the movable cone sleeve gear ring is just higher than the upper surface of the inner ring teeth of the upper cover lifting inner gear ring, and the bottom of the movable cone sleeve gear ring is fixedly connected to the inner side of the outer gear disk of the upper cover through the rotating flange seat and the other end of the connected fan-shaped fixing part to form an integral structure, which can rotate relative to the center of the guide rod by an angle of the gear tooth shape when the push rod is rotated to extend or retract.

[0012] The upper cover fixed inner toothed ring is placed at the upper opening of the container tube, the circular outer edge of the upper cover fixed inner toothed ring is in close contact with the inner wall of the container tube, and the upper cover fixed inner toothed ring can move up and down along the inner wall of the container tube, and below the upper cover fixed inner toothed ring is the container internal lifting mechanism inside the container tube, when the container internal lifting mechanism is connected to the upper cover fixed inner toothed ring, the container internal lifting mechanism can drive the upper cover fixed inner toothed ring to rise or fall along the inner wall of the container tube.

[0013] The upper cover fixed inner gear ring itself can be divided into several layers, the uppermost layer is an annular inner gear tooth structure, when the upper cover body is in close contact with the inner side of the upper cover outer sealing ring, the upper surface of the gear teeth at the circular edge of the upper cover outer gear disk is just lower than the lower surface of the gear teeth of the uppermost layer of the annular inner teeth of the upper cover fixed inner gear ring, the annular inner side gear tooth structure of the upper cover fixed inner gear ring matches the shape and size of the outer edge gear tooth structure of the upper cover outer gear disk and can be overlapped or staggered up and down, the middle layer of the upper cover fixed inner gear ring is an annular structure with a groove on the inner side, the inner diameter of the annular structure at the groove is slightly larger than the maximum outer diameter of the outer edge gear tooth structure of the upper cover outer gear disk, and the lowermost inner diameter of the upper cover fixed inner gear ring matches the outer diameter of the upper cover outer sealing ring.

[0014] The utility model of the gear-staggered follow-up capping device, the lifting push rod, the upper cover lifting frame, and the container internal lifting mechanism together constitute the automatic lifting device of the container barrel, the lifting push rod installed on the container barrel frame can provide the automatic opening and closing of the entire cap with sufficient stroke, the upper cover lifting frame and the guide rod ensure that the lifting distance and moving direction of the entire cap are controlled, meet the requirements of the container barrel automatic feeding working space, and the container internal lifting mechanism ensures the lifting and lowering movement of the entire cap in the container barrel. The design of the movable cone sleeve gear ring, the upper cover lifting inner gear ring, the guide rod, and the positioning cone block of the utility model of the gear-staggered follow-up capping device ensures that when the container barrel is open, the upper cover body of the container barrel can be oriented and smoothly left from the container barrel and maintain a certain height, and then the upper cover lifting inner gear ring locks the movable cone sleeve gear ring and the upper cover body bound thereto, so that the container barrel mouth leaves a feeding operation space, and can ensure that the time for opening the container barrel mouth is enough for feeding into the container barrel. The utility model of the gear-staggered follow-up capping device has an outer toothed disc on the upper cover and a fixed inner toothed ring on the upper cover with a gear-shaped structure that interlaced and overlaps with each other in rotational locking and unlocking, so that the closing and opening of the container barrel mouth can be realized, and it can ensure that the cap forms an integral structure after self-locking, and maintains close contact with the inner wall of the container barrel when it moves. The outer sealing ring on the upper cover, the upper cover body, the rotating moving ring and the container barrel sealing ring of the utility model of the gear-staggered follow-up capping device separate the sealing and rotating forces between the various capping components, and ensure the sealing effect of the capping during rotation or movement. The fan-shaped fixing parts, rotating push rod, guide rod sliding positioning device, positioning cone block, and swivel flange seat of the utility model gear staggered follow-up capping device ensure that the concentric positioning axis of the guide rod as the whole capping and the positioning of the whole capping are not offset when rotating and moving, and the gear tooth structure of the relatively rotatable movable cone sleeve gear ring, the upper cover outer gear disc, the upper cover lifting inner gear ring, and the upper cover fixing inner gear ring with the rotating moving ring as the interlayer realizes mutual staggered overlapping locking, which not only improves the safety and stability of the container tube capping, but also takes into account the overall closure and safety. The utility model gear staggered follow-up capping device can be raised and lowered on the container mouth, can be moved a certain distance inside the container, and can realize the automatic opening and closing of the container tube mouth after self-locking and unlocking rotation of the upper cover fixing inner gear ring and the upper cover outer gear disc. These processes can be repeated many times, and it is a capping device that can be used frequently.

[0015] The following is a further description of the gear-staggered follow-up capping device of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional half-section front view of the container tube of the utility model of the gear staggered follow-up capping device when it is in the open feeding state;

[0017] Figure 2 It is a three-dimensional half-section front view of the utility model of the staggered gear follower capping device after it moves down a certain distance along the container wall;

[0018] Figure 3 It is a top view of the utility model of the gear-staggered follow-up cover device in the closed state, after the upper cover outer gear disc and the upper cover fixed inner gear ring are locked;

[0019] Figure 4 It is a top view of the utility model of the staggered gear follow-up cover device in the open state, after the movable cone sleeve gear ring and the upper cover fixed inner gear ring are locked;

[0020] Figure 5 It is a three-dimensional half-section front view of the utility model of the staggered gear follower sealing device when sealing the container tube;

[0021] Figure 6 This is a three-dimensional half-section partial enlarged view of the multi-layer seal of the utility model's staggered gear follow-up capping device when sealing the container tube, and the enlarged part is Figure 5 The partial view of point A shown above;

[0022] Figure annotation:

[0023] 1. Container tube; 2. Container tube frame; 3. Lifting push rod; 4. Upper cover lifting frame; 5. Guide rod; 6. Movable cone sleeve gear ring; 7. Upper cover lifting inner gear ring; 8. Upper cover outer gear disk; 9. Upper cover outer sealing ring; 10. Upper cover body; 11. Rotating moving ring; 12. Fan-shaped fixing part; 13. Rotating push rod; 14. Upper cover fixing inner gear ring; 15. Guide rod sliding positioning device; 16. Rotating flange seat; 17. Container tube sealing ring; 18. Lifting mechanism inside container; 19. Positioning cone block. DETAILED DESCRIPTION

[0024] like Figure 1 As shown, the utility model of the gear staggered follow-up capping device, the main structure includes a lifting push rod 3, an upper cover lifting frame 4, a guide rod 5, a movable cone sleeve gear ring 6, an upper cover lifting inner gear ring 7, an upper cover outer gear disk 8, an upper cover outer sealing ring 9, an upper cover body 10, a rotating moving ring 11, a fan-shaped fixing member 12, a rotating push rod 13, an upper cover fixed inner gear ring 14, a guide rod sliding positioning device 15, a rotary flange seat 16, a container tube sealing ring 17, and a positioning cone block 19. The container tube 1 is fixed on the container tube frame 2, and the container tube 1 is equipped with a container internal lifting mechanism 18, which can drive the upper cover fixed inner gear ring 14 to move up and down in the container tube 1.

[0025] The lower end of the lifting push rod 3 is fixed on the container tube frame 2 outside the container tube 1, and the upper end of the lifting push rod 3 is fixed to the two ends of the upper cover lifting frame 4. An upper cover lifting inner gear ring 7 is fixed in the middle of the upper cover lifting frame 4. When the lifting push rod 3 is extended or shortened, the fixed upper cover lifting frame 4 and the upper cover lifting inner gear ring 7 are lifted and lowered.

[0026] The lower end of the guide rod 5 directly reaches the central groove of the upper cover body 10 and is fixedly connected to the upper cover body 10. The middle part of the guide rod 5 has a thread that matches the central thread of the positioning cone block 19. When the thread on the positioning cone block 19 is tightened, the conical surface of the positioning cone block 19 tightly fixes the movable cone sleeve gear ring 6 on the guide rod 5.

[0027] The bottom of the movable cone sleeve gear ring 6 is fixedly connected to the rotary flange seat 16, and the top circular edge of the movable cone sleeve gear ring 6 is gear-toothed, and the gear teeth at the top edge of the movable cone sleeve gear ring 6 match the notch size of the inner ring teeth of the upper cover lifting inner gear ring 7.

[0028] When the upper cover body 10 is in close contact with the inner side of the upper cover outer sealing ring 9, the lifting push rod 3 is shortened and the upper cover lifting frame 4 fixedly connected thereto is lowered, and the height of the upper cover lifting inner gear ring 7 fixed on the upper cover lifting frame 4 is lowered accordingly, while the height of the movable cone sleeve gear ring 6 remains unchanged at the same time, that is, when the upper cover lifting inner gear ring 7 is sleeved on the movable cone sleeve gear ring 6, the lower surface of the gear tooth structure at the upper end edge of the movable cone sleeve gear ring 6 is just higher than the upper surface of the annular gear teeth of the upper cover lifting inner gear ring 7. After the movable cone sleeve gear ring 6 is rotated by a small angle with the guide rod 5 as the axis, the gear teeth at the upper end edge of the movable cone sleeve gear ring 6 are The toothed structure and the toothed structure of the upper cover lifting inner gear ring 7 can be staggered and overlapped up and down and locked up and down, and the staggered overlapping state is just staggered with the staggered overlapping state of the edge gear toothed structure of the upper cover outer gear disc 8 and the upper cover fixed inner gear ring 14. At this time, if the jacking push rod 3 is extended to make the upper cover lifting frame 4 rise, the upper cover lifting frame 4 and the movable cone sleeve gear ring 6 carry the fixed fan-shaped fixing part 12 and the upper cover outer sealing ring 9 and the upper cover main body 10 to leave a distance from the upper cover fixed inner gear ring 14 of the container tube 1 mouth, so that the middle part of the upper cover fixed inner gear ring 14 of the container tube 1 mouth remains in an open state, leaving space for loading.

[0029] like Figure 2 As shown, in the utility model, a staggered gear follow-up capping device is provided, wherein a guide rod sliding positioning device 15 is fixed at the center of the upper cover lifting frame 4, and a guide rod 5 which can move up and down is installed in the guide rod sliding positioning device 15. The guide rod 5 passes through the center of the guide rod sliding positioning device 15 of the upper cover lifting frame 4, the center of the positioning cone block 19, and the center of the movable cone sleeve gear ring 6 from top to bottom.

[0030] The swivel flange seat 16 is a flange body with a bearing fixed in the center. The guide rod 5 passes through the center of the swivel flange seat 16 from top to bottom, and one end of the fan-shaped fixing member 12 is fixedly connected to the swivel flange seat 16, and the other end of the fan-shaped fixing member 12 is fixed to the inner side surface of the outer gear disc 8 of the upper cover.

[0031] When the upper cover body 10 contacts the inner side of the upper cover outer sealing ring 9, the lower bottom surface of the gear teeth at the top circular edge of the movable cone sleeve gear ring 6 is just higher than the upper surface of the inner ring teeth of the upper cover lifting inner gear ring 7, and the bottom of the movable cone sleeve gear ring 6 is fixedly connected to the inner side of the upper cover outer gear disk 8 through the rotating flange seat 16 and the other end of the connected fan-shaped fixing piece 12 to form an integral structure, which can rotate relative to the center of the guide rod 5 by an angle of the gear tooth shape when the rotating push rod 13 is extended or retracted.

[0032] like Figure 3 As shown, in the utility model, the gear-staggered follow-up capping device, one end of the rotating push rod 13 is hinged on the fan-shaped fixing piece 12, and the other end of the rotating push rod 13 is hinged on the upper cover body 10; when the rotating push rod 13 is extended or shortened, the upper cover body 10 does not move, and the upper cover outer toothed disc 8 hinged to the rotating push rod 13 will rotate in a small angle in the positive or reverse direction with the guide rod 5 as the central axis. At this time, the upper cover outer toothed disc 8 and the fan-shaped fixing piece 12 drive the fixed movable cone sleeve gear ring 6 to rotate synchronously.

[0033] like Figure 4 As shown, in the utility model, the gear-staggered follow-up capping device, one end of the rotating push rod 13 is hinged on the fan-shaped fixing piece 12, and the other end of the rotating push rod 13 is hinged on the upper cover body 10; when the rotating push rod 13 is shortened, the upper cover body 10 does not move, and the upper cover outer toothed disc 8 hinged to the rotating push rod 13 will rotate clockwise with the guide rod 5 as the central axis. At this time, the upper cover outer toothed disc 8 and the fan-shaped fixing piece 12 drive the fixed movable cone sleeve gear ring 6 to rotate synchronously.

[0034] like Figure 3 , Figure 4 As shown, in the utility model, when the upper cover body 10 is in close contact with the upper cover outer sealing ring 9, after the movable cone sleeve gear ring 6 is rotated by a small angle with the guide rod 5 at its center as the axis when the rotating push rod 13 is pushed, the upper edge gear tooth structure of the movable cone sleeve gear ring 6 will be staggered with the tooth structure of the upper cover lifting inner gear ring 7, and the edge gear tooth structure on the upper cover outer gear disk 8 and the edge gear tooth structure on the upper cover fixed inner gear ring 14 are staggered and overlapped to form a locked state. When the outer toothed disc 8 of the cover is locked with the fixed inner toothed ring 14 of the upper cover and moves downward along the inner wall of the container tube 1 as a whole, the fan-shaped fixing part 12, the upper cover body 10, the upper cover outer sealing ring 9, the movable cone sleeve gear ring 6, the guide rod 5 and the positioning cone block 19 move downward together. During the downward movement of the guide rod 5 along the guide rod sliding positioning device 15 of the upper cover lifting frame 4, the guide rod 5 and the positioning cone block 19 ensure that the outer toothed disc 8 of the upper cover together with the upper cover body 10 and the fixed inner toothed ring 14 of the upper cover are accurately coaxially positioned as a whole after being locked.

[0035] like Figure 5As shown, the three-dimensional half-section front view of the gear staggered follow-up capping device of the utility model when sealing the container tube. The upper cover fixed inner gear ring 14 is placed at the upper opening of the container tube 1, and the circular outer edge of the upper cover fixed inner gear ring 14 is in close contact with the inner wall of the container tube 1, and the upper cover fixed inner gear ring 14 can move up and down along the inner wall of the container tube 1. Below the upper cover fixed inner gear ring 14 is the container inner lifting mechanism 18 inside the container tube 1. When the container inner lifting mechanism 18 is connected to the upper cover fixed inner gear ring 14, the container inner lifting mechanism 18 can drive the upper cover fixed inner gear ring 14 to rise or fall along the inner wall of the container tube 1.

[0036] The upper cover fixed inner gear ring 14 itself can be divided into several layers, the uppermost layer is an annular inner gear tooth structure, when the upper cover body 10 is in close contact with the inner side of the upper cover outer sealing ring 9, the upper surface of the gear teeth at the circular edge of the upper cover outer toothed disk 8 is just lower than the lower surface of the gear teeth of the uppermost layer of the annular inner teeth of the upper cover fixed inner gear ring 14, the annular inner side gear tooth structure of the upper cover fixed inner gear ring 14 matches the shape and size of the outer edge gear tooth structure of the upper cover outer toothed disk 8 and can be overlapped or staggered up and down, the middle layer of the upper cover fixed inner gear ring 14 is an annular structure with a groove on the inside, the inner diameter of the annular structure at the groove is slightly larger than the maximum outer diameter of the outer edge gear tooth structure of the upper cover outer toothed disk 8, and the lowermost inner diameter of the upper cover fixed inner gear ring 14 matches the outer diameter of the upper cover outer sealing ring 9.

[0037] When the upper cover fixed inner toothed ring 14 and the upper cover outer toothed disc 8 are locked by being offset and overlapped up and down, the upper cover fixed inner toothed ring 14, the upper cover outer sealing ring 9 and the upper cover main body 10 are locked as a whole, and the upper cover fixed inner toothed ring 14 and the locked whole close the upward opening of the container tube 1, and the lower circular outer edge of the upper cover fixed inner toothed ring 14 keeps in contact with the inner wall of the container tube 1, and can move up and down a certain distance driven by the lifting mechanism 18 in the container.

[0038] like Figure 6 As shown, a three-dimensional half-section partial enlarged view of the multi-layer seal of the utility model staggered gear follower capping device when sealing the container tube, the enlarged part is Figure 5 The partial view of A shown above. A rotating ring 11 is installed between the upper cover outer toothed disc 8 and the upper cover body 10. Rotating the upper cover outer toothed disc 8 can ensure the sliding smoothness between the upper cover outer toothed disc 8 and the upper cover body 10, and the inner edge of the upper cover outer sealing ring 9 is in close contact with the outer edge of the upper cover body 10.

[0039] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should all fall within the protection scope of the claims of the present invention.

Claims

1. A gear staggered follow-up capping device, the main structure of which comprises a lifting push rod (3), an upper cover lifting frame (4), a guide rod (5), a movable cone sleeve gear ring (6), an upper cover lifting inner gear ring (7), an upper cover outer gear disc (8), an upper cover outer sealing ring (9), an upper cover body (10), a rotating movable ring (11), a fan-shaped fixing member (12), a rotating push rod (13), an upper cover fixing inner gear ring (14), a guide rod sliding positioning device (15), a rotary flange seat (16), a container tube sealing ring (17), and a positioning cone block (19). The container tube (1) is fixed on the container tube frame (2), and the container tube (1) is provided with a container inner lifting mechanism (18). The characteristics are as follows: The lower end of the lifting push rod (3) is fixed on the container tube frame (2) outside the container tube (1), and the upper end of the lifting push rod (3) is fixed to the two ends of the upper cover lifting frame (4). An upper cover lifting inner gear ring (7) is fixed in the middle of the upper cover lifting frame (4). When the lifting push rod (3) is extended or shortened, the upper cover lifting frame (4) and the upper cover lifting inner gear ring (7) fixed thereto are lifted or lowered. A guide rod sliding positioning device (15) is fixed at the center of the upper cover lifting frame (4), and a guide rod (5) that can move up and down is installed in the guide rod sliding positioning device (15). The guide rod (5) passes through the center of the guide rod sliding positioning device (15) of the upper cover lifting frame (4), the center of the positioning cone block (19), and the center of the movable cone sleeve gear ring (6) from top to bottom, and the lower end of the guide rod (5) directly reaches the central groove of the upper cover body (10) and is fixedly connected to the upper cover body (10). The middle part of the guide rod (5) has a thread that matches the central thread of the positioning cone block (19). When the thread on the positioning cone block (19) is tightened, the conical surface of the positioning cone block (19) tightly fixes the movable cone sleeve gear ring (6) on the guide rod (5); One end of the rotating push rod (13) is hinged on the fan-shaped fixing member (12), and the other end of the rotating push rod (13) is hinged on the upper cover body (10); The bottom of the movable cone sleeve gear ring (6) is fixedly connected to the rotary flange seat (16), the top circular edge of the movable cone sleeve gear ring (6) is gear-toothed, and the gear teeth at the top edge of the movable cone sleeve gear ring (6) match the notch size of the inner ring teeth of the upper cover lifting inner gear ring (7); The swivel flange seat (16) is a flange body with a bearing fixed at the center, the guide rod (5) passes through the center of the swivel flange seat (16) from top to bottom, one end of the fan-shaped fixing member (12) is fixedly connected to the swivel flange seat (16), and the other end of the fan-shaped fixing member (12) is fixed to the inner side surface of the outer toothed disc (8) of the upper cover; When the upper cover body (10) contacts the inner side of the upper cover outer sealing ring (9), the lower bottom surface of the gear teeth at the top circular edge of the movable cone sleeve gear ring (6) is just higher than the upper surface of the inner ring teeth of the upper cover lifting inner gear ring (7), and the bottom of the movable cone sleeve gear ring (6) is fixedly connected to the inner side of the upper cover outer gear disk (8) through the rotating flange seat (16) and the other end of the connected fan-shaped fixing member (12) to form an integral structure, and the integral structure can rotate relative to the center of the guide rod (5) by an angle of a gear tooth shape when the push rod (13) is rotated to extend and retract; The upper cover fixed inner toothed ring (14) is placed at the upper opening of the container tube (1), the circular outer edge of the upper cover fixed inner toothed ring (14) is in close contact with the inner wall of the container tube (1), and the upper cover fixed inner toothed ring (14) can move up and down along the inner wall of the container tube (1), and below the upper cover fixed inner toothed ring (14) is an inner container lifting mechanism (18) inside the container tube (1), and when the inner container lifting mechanism (18) is connected to the upper cover fixed inner toothed ring (14), the inner container lifting mechanism (18) can drive the upper cover fixed inner toothed ring (14) to rise or fall along the inner wall of the container tube (1); The upper cover fixed inner gear ring (14) itself can be divided into several layers, the uppermost layer is an annular inner gear tooth structure, when the upper cover body (10) is in close contact with the inner side of the upper cover outer sealing ring (9), the upper surface of the gear tooth at the circular edge of the upper cover outer gear disk (8) is just lower than the lower surface of the gear tooth of the uppermost layer of the annular inner teeth of the upper cover fixed inner gear ring (14), the annular inner gear tooth structure of the upper cover fixed inner gear ring (14) matches the shape and size of the outer gear tooth structure of the upper cover outer gear disk (8) and can be overlapped or staggered up and down, the middle layer of the upper cover fixed inner gear ring (14) is an annular structure with a groove on the inner side, the inner diameter of the annular structure at the groove is slightly larger than the maximum outer diameter of the outer gear tooth structure of the upper cover outer gear disk (8), and the inner diameter of the lowest layer of the upper cover fixed inner gear ring (14) matches the outer diameter of the upper cover outer sealing ring (9).

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