Vacuum-pumping sealing cover for container

Abstract

The container vacuumizing sealing cover comprises an inner sleeve, an outer sleeve, a middle sleeve, a sealing column and an end cover, a first connecting cylinder with an opening in the upper end is formed in the center of the inner sleeve, and a second connecting cylinder with an opening in the upper end and a third connecting cylinder with an opening in the lower end are formed in the centers of the upper surface and the lower surface of the outer sleeve respectively. A first vent hole and a second vent hole are formed in bottom plates of the first connecting cylinder and the third connecting cylinder respectively, the inner sleeve is attached to the lower surface of the outer sleeve, the second connecting cylinder is inserted into the first connecting cylinder and is in interference fit with the first connecting cylinder, and the first vent hole is aligned with the second vent hole. The section of the middle sleeve is in an inverted U shape, the middle sleeve is inserted into the second connecting cylinder and is in interference fit with the second connecting cylinder, a third vent hole is formed in the middle sleeve, the end cover is slidably arranged on the middle sleeve in a penetrating mode and penetrates through the middle sleeve to be fixedly connected with the sealing column located in the middle sleeve, and the sealing column can move along with the end cover to seal the second vent hole. According to the container vacuumizing sealing cover, vacuumizing operation of the container is more convenient, and the container vacuumizing sealing cover has better practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing covers, in particular to a container vacuum sealing cover. Background Art

[0002] The sealing cover is a component provided on the container for sealing the container to ensure that the contents in the container will not deteriorate or be damaged. In order to achieve a better preservation effect, the prior art uses a vacuuming method to place the contents in the container in a dry and sealed vacuum environment. However, the sealing cover in the prior art is not convenient for vacuuming the inside of the container.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides a container vacuum sealing cover, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A container vacuum sealing cover comprises an inner sleeve, an outer sleeve, a middle sleeve, a sealing column and an end cover, wherein a first connecting tube with an upper end opening is formed in the center of the inner sleeve, a second connecting tube with an upper end opening and a third connecting tube with an lower end opening are respectively formed in the centers of the upper and lower surfaces of the outer sleeve, a first air vent and a second air vent are respectively provided on the bottom plates of the first connecting tube and the third connecting tube, the inner sleeve is fitted to the lower surface of the outer sleeve, the second connecting tube is inserted into the first connecting tube and has an interference fit with the first connecting tube, so that the first air vent is aligned with the second air vent, the cross-section of the middle sleeve is an inverted U-shape and the middle sleeve is inserted into the second connecting tube and has an interference fit with the second connecting tube, the middle sleeve is provided with a third air vent, the end cover can be slidably inserted into the middle sleeve and the end cover passes through the middle sleeve and is fixedly connected to the sealing column located in the middle sleeve, and the sealing column can move with the end cover to close the second air vent.

[0007] Preferably, it also includes a connecting pressure ring, a plurality of first connecting columns are formed on the upper surface of the connecting pressure ring, a plurality of second connecting columns corresponding to the plurality of first connecting columns are formed on the lower surface of the outer sleeve, a first connecting hole is formed on the end surface of the second connecting column, a plurality of limiting holes corresponding to the plurality of second connecting columns are formed on the inner sleeve, the second connecting column is inserted into the limiting hole, the second connecting column is inserted into the first connecting hole and is interference fit with the first connecting hole, so that the connecting pressure ring presses the inner sleeve against the lower surface of the outer sleeve.

[0008] Preferably, it also includes a connecting pile, a third connecting column is formed on the end cover, the third connecting column is passed through the middle sleeve and a second connecting hole is opened on the end surface of the third connecting column, a third connecting hole is opened on the end surface of the sealing column, and both ends of the connecting pile are respectively inserted into the second connecting hole and the third connecting hole to have an interference fit with the second connecting hole and the third connecting hole.

[0009] Preferably, a limiting protrusion is formed on the peripheral side surface of the connecting pile.

[0010] Preferably, a limiting cylinder with an open upper end is formed on the middle sleeve, the end cover is located in the limiting cylinder, the third connecting column is penetrated through the bottom plate of the limiting cylinder, and the third vent hole is opened on the bottom plate of the limiting cylinder.

[0011] Preferably, the lower end of the sealing column is conical, and the upper end of the second vent hole is chamfered, so that the lower end of the sealing column can be inserted into and abut against the upper end of the second vent hole.

[0012] Preferably, a plurality of scales evenly distributed around the second connecting tube are formed on the upper surface of the outer sleeve, a rotatable marking ring is sleeved on the second connecting tube, and a marking protrusion pointing to the scales is formed on the outer wall of the marking ring.

[0013] To sum up, the beneficial effect of the utility model is that when the container is vacuumed, it is only necessary to press the vacuum pipe of the vacuum equipment against the middle cover, suck the end cover and drive the sealing column to open the second vent hole, so that the air in the container is sucked out through the first vent hole, the second vent hole and the third vent hole. After the vacuuming is completed, the end cover slides inward under the action of the pressure difference between the inside and outside of the container and drives the sealing column to press against the port of the second vent hole to achieve the sealing of the container. It can be seen that this sealing cover is more convenient for vacuuming the container and has better practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 3 It is an exploded schematic diagram of the utility model;

[0018] Figure 4 This is another exploded schematic diagram of the present invention.

[0019] In the figure: 1. inner sleeve; 11. first connecting tube; 12. first ventilation hole; 13. limiting hole; 2. outer sleeve; 21. second connecting tube; 22. third connecting tube; 23. second ventilation hole; 24. second connecting column; 241. first connecting hole; 25. scale; 3. middle sleeve; 31. third ventilation hole; 32. limiting tube; 4. sealing column; 41. third connecting hole; 5. end cover; 51. third connecting column; 511. second connecting hole; 6. connecting pressure ring; 61. first connecting column; 7. connecting pile; 71. limiting protrusion; 8. identification ring; 81. identification protrusion. DETAILED DESCRIPTION

[0020] The following will be combined with the attached embodiment of the utility model Figure 1-4 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] As shown in the figure, a container vacuum sealing cover comprises an inner sleeve 1, an outer sleeve 2, a middle sleeve 3, a sealing column 4 and an end cover 5. The inner sleeve 1 is formed with a first connecting tube 11 with an upper end opening at the center, and the outer sleeve 2 is formed with a second connecting tube 21 with an upper end opening and a third connecting tube 22 with an lower end opening at the center of the upper and lower surfaces, respectively. The first connecting tube 11 and the third connecting tube 22 are respectively provided with a first vent hole 12 and a second vent hole 23 on the bottom plates. The inner sleeve 1 is attached to the lower surface of the outer sleeve 2, and the second connecting tube 21 is inserted into the first connecting tube 11 and connected to the first connecting tube 1 1 interference fit, so that the first vent hole 12 is aligned with the second vent hole 23, the cross section of the middle sleeve 3 is an inverted U shape and the middle sleeve 3 is inserted into the second connecting tube 21 and is interference fit with the second connecting tube 21, and a third vent hole 31 is opened on the middle sleeve 3, and the end cover 5 can be slidably penetrated on the middle sleeve 3 and the end cover 5 passes through the middle sleeve 3 and is fixedly connected with the sealing column 4 located in the middle sleeve 3, and the sealing column 4 can move with the end cover 5 to close the second vent hole 23, wherein the inner sleeve 1 and the sealing column 4 are made of silicone material, and the outer sleeve 2, the middle sleeve 3 and the end cover 5 are made of hard plastic material.

[0022] Specifically, the structure in which the inner sleeve 1 is fitted on the lower surface of the outer sleeve 2 also includes a connecting pressure ring 6, a plurality of first connecting columns 61 are formed on the upper surface of the connecting pressure ring 6, a plurality of second connecting columns 24 corresponding to the plurality of first connecting columns 61 are formed on the lower surface of the outer sleeve 2, a first connecting hole 241 is provided on the end surface of the second connecting column 24, a plurality of limiting holes 13 corresponding to the plurality of second connecting columns 24 are provided on the inner sleeve 1, the second connecting columns 24 are inserted into the limiting holes 13, the second connecting columns 24 are inserted into the first connecting holes 241 and are interference fit with the first connecting holes 241, so that the connecting pressure ring 6 presses the inner sleeve 1 tightly against the lower surface of the outer sleeve 2, in the above structure, the second connecting columns 24 cooperate with the limiting holes 13 to limit the relative rotation between the inner sleeve 1 and the outer sleeve 2, the connecting pressure ring 6 presses the inner sleeve 1 against the lower surface of the outer sleeve 2 to fasten the inner sleeve 1 and the outer sleeve 2, so that the inner sleeve 1 and the outer sleeve 2 are tightly assembled together for cooperation, and the assembly operation of the inner sleeve 1 and the outer sleeve 2 is very convenient.

[0023] Specifically, the structure in which the end cover 5 is fixedly connected to the sealing column 4 also includes a connecting pile 7, a third connecting column 51 is formed on the end cover 5, the third connecting column 51 is penetrated through the middle sleeve 3 and a second connecting hole 511 is formed on the end face of the third connecting column 51, a third connecting hole 41 is formed on the end face of the sealing column 4, two ends of the connecting pile 7 are respectively inserted into the second connecting hole 511 and the third connecting hole 41 and are interference fit with the second connecting hole 511 and the third connecting hole 41. In the above structure, the third connecting column 51 and the sealing column 4 are fixedly connected by the supporting effect of the connecting pile 7, and the end cover 5 and the sealing cover are fixedly connected, which is convenient for assembly of the sealing column 4 and the end cover 5. After the sealing column 4 is fixedly connected to the end cover 5, it can move in a direction away from or close to the second vent hole 23 as the third connecting column 51 slides on the middle sleeve 3.

[0024] Specifically, a limiting protrusion 71 is formed on the side surface of the connecting pile 7. When the third connecting column 51 slides on the middle sleeve 3, the limiting protrusion 71 limits the sliding of the third connecting column 51 and then the end cover 5, thereby preventing the end cover 5 from falling off from the middle sleeve 3.

[0025] In the above embodiment, the lower end of the inner sleeve 1 extends into the container, the outer sleeve 2 is fixedly connected to the outer wall of the container, and the sealing cover is arranged on the container. When the container is vacuumed, the port of the vacuum pipe of the vacuum equipment is pressed against the middle sleeve 3, and the vacuum equipment sucks the end cover 5 to slide outward. The end cover 5 drives the sealing column 4 to move away from the second vent hole 23 through the third connecting pile 7 to open the second vent hole 23. The air in the container is successively sucked away by the vacuum equipment through the first through hole, the second through hole and the third through hole. After the vacuum equipment completes the vacuum operation on the container and stops working, since the container is in a negative pressure state at this time, the end cover 5 is under the effect of the external air pressure. The sealing column 4 is driven by the third connecting pile 7 to move toward the second vent hole 23, so that the sealing column 4 is against the end of the second vent hole 23 and closes the second vent hole 23, thereby sealing the container and keeping the interior of the container in a vacuum state. It can be seen that this sealing cover is very convenient to operate when evacuating the container. It is only necessary to place the vacuum pipe of the vacuum equipment against the middle cover, which is more convenient to use and has better practicality. When releasing the vacuum state of the container, it is only necessary to pull the end cover 5 outward by hand. The operation is also convenient. In addition, the assembly of this sealing cover is also very convenient. No additional tools and connectors are required during assembly, thereby facilitating the production of the sealing cover.

[0026] Preferably, a limiting cylinder 32 with an open upper end is formed on the middle sleeve 3, the end cover 5 is located in the limiting cylinder 32, the third connecting column 51 is passed through the bottom plate of the limiting cylinder 32, and the third vent hole 31 is opened on the bottom plate of the limiting cylinder 32. The limiting cylinder 32 limits the deflection of the end cover 5 when the end cover 5 slides, thereby enhancing the stability of the end cover 5 when sliding, thereby enhancing the stability of the sealing column 4 when moving, and further ensuring that the sealing column 4 can accurately resist the port of the second vent hole 23 to seal the container, thereby enhancing the sealing performance of the container.

[0027] Preferably, the lower end of the sealing column 4 is conical, and the upper end of the second air hole 23 is chamfered, and the lower end of the sealing column 4 can be inserted into and abut against the upper end of the second air hole 23. After the conical lower end of the sealing column 4 is inserted into and abuts against the upper end of the second air hole 23, the sealing performance of the sealing column 4 to the second air hole 23 is enhanced, thereby enhancing the sealing performance of the container, and the chamfering of the upper end of the second air hole 23 enables the sealing column 4 to be more stably inserted into the second air hole 23 to seal the second air hole 23.

[0028] Preferably, a plurality of scales 25 evenly distributed around the second connecting tube 21 are formed on the upper surface of the outer sleeve 2, and a rotatable marking ring 8 is sleeved on the second connecting tube 21. A marking protrusion 81 pointing to the scale 25 is formed on the outer wall of the marking ring 8. After completing the vacuum sealing operation of the container, the marking ring 8 is rotated to make the marking protrusion 81 point to the scale 25 corresponding to the date, so as to mark the time of the vacuum sealing operation of the container, so that the sealing cover has better practicality.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A container vacuum sealing cover, characterized in that: The invention comprises an inner sleeve (1), an outer sleeve (2), a middle sleeve (3), a sealing column (4) and an end cover (5), wherein a first connecting tube (11) with an upper end opening is formed at the center of the inner sleeve (1), a second connecting tube (21) with an upper end opening and a third connecting tube (22) with a lower end opening are formed at the center of the upper and lower surfaces of the outer sleeve (2), respectively, a first vent hole (12) and a second vent hole (23) are respectively formed on the bottom plates of the first connecting tube (11) and the third connecting tube (22), the inner sleeve (1) is fitted on the lower surface of the outer sleeve (2), the second connecting tube (21) is inserted into the first connecting tube The sleeve (11) is interference-fitted with the first connecting sleeve (11) so that the first vent hole (12) is aligned with the second vent hole (23). The cross section of the middle sleeve (3) is inverted U-shaped and the middle sleeve (3) is inserted into the second connecting sleeve (21) and interference-fitted with the second connecting sleeve (21). The middle sleeve (3) is provided with a third vent hole (31). The end cover (5) is slidably inserted into the middle sleeve (3) and the end cover (5) passes through the middle sleeve (3) and is fixedly connected to a sealing column (4) located in the middle sleeve (3). The sealing column (4) can move with the end cover (5) to close the second vent hole (23).

2. The container vacuum sealing cover according to claim 1, characterized in that: The invention also comprises a connecting pressure ring (6), wherein a plurality of first connecting columns (61) are formed on the upper surface of the connecting pressure ring (6), a plurality of second connecting columns (24) corresponding to the plurality of first connecting columns (61) are formed on the lower surface of the outer sleeve (2), a first connecting hole (241) is formed on the end surface of the second connecting column (24), a plurality of limiting holes (13) corresponding to the plurality of second connecting columns (24) are formed on the inner sleeve (1), the second connecting columns (24) are inserted into the limiting holes (13), and the second connecting columns (24) are inserted into the first connecting holes (241) and are interference fit with the first connecting holes (241), so that the connecting pressure ring (6) presses the inner sleeve (1) against the lower surface of the outer sleeve (2).

3. The container vacuum sealing cover according to claim 2, characterized in that: The invention also comprises a connecting pile (7), a third connecting column (51) being formed on the end cover (5), the third connecting column (51) being inserted through the middle sleeve (3) and a second connecting hole (511) being formed on the end surface of the third connecting column (51), a third connecting hole (41) being formed on the end surface of the sealing column (4), and two ends of the connecting pile (7) being respectively inserted into the second connecting hole (511) and the third connecting hole (41) to form an interference fit with the second connecting hole (511) and the third connecting hole (41).

4. The container vacuum sealing cover according to claim 3, characterized in that: A limiting protrusion (71) is formed on the peripheral side surface of the connecting pile (7).

5. The container vacuum sealing cover according to claim 4, characterized in that: The middle sleeve (3) is formed with a limiting cylinder (32) with an open upper end, the end cover (5) is located in the limiting cylinder (32), the third connecting column (51) is penetrated through the bottom plate of the limiting cylinder (32), and the third vent hole (31) is opened on the bottom plate of the limiting cylinder (32).

6. The container vacuum sealing cover according to claim 5, characterized in that: The lower end of the sealing column (4) is conical, and the upper end of the second vent hole (23) is chamfered. The lower end of the sealing column (4) can be inserted into and abut against the upper end of the second vent hole (23).

7. The container vacuum sealing cover according to claim 6, characterized in that: The upper surface of the outer sleeve (2) is formed with a plurality of scales (25) evenly distributed around the second connecting tube (21); a rotatable marking ring (8) is sleeved on the second connecting tube (21); and a marking protrusion (81) pointing to the scales (25) is formed on the outer wall of the marking ring (8).

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