CN210047828U

CN210047828U - Long-acting vacuum fresh-keeping cover

Info

Publication number: CN210047828U
Application number: CN201920522668.0U
Authority: CN
Inventors: 林万顷; 陈水松; 余建
Original assignee: Xiamen Seven Chi Kitchens Technology Co Ltd
Current assignee: Xiamen Seven Chi Kitchens Technology Co Ltd
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2020-02-11
Anticipated expiration: 2029-04-17

Abstract

The utility model provides a long-term vacuum fresh-keeping lid relates to a fresh-keeping lid, including lid, nut and rubber ring, be equipped with air current access way on lid and the nut, the nut spiro union is in on the air current access way of lid, be equipped with the ball on the air current access way of nut, the cushion of through-hole about being equipped with on the air current access way of lid, the cushion with the ball reaches the air current access way adaptation of lid, the rubber ring is located in the lid periphery. The valve is closed by mechanical force and elastic force instead of only depending on atmospheric pressure, so that the air tightness and the durability which are far higher than those of a common air valve are obtained; feedback is obtained in the operation process, so that the state of the valve is known and better experience is achieved; the container remains sealed even if the vacuum eventually disappears.

Description

Long-acting vacuum fresh-keeping cover

Technical Field

The utility model relates to a fresh-keeping lid, especially a long-term vacuum fresh-keeping lid.

Background

Most of food materials need to be airtight in preservation, and vacuum preservation is a better preservation mode than common airtightness; the fresh-keeping effect is related to the vacuum degree; in actual use, the vacuum degree is always lower and lower until the vacuum disappears; in the field of vacuum preservation containers, patent documents already disclosed are searched, an elastic one-way valve structure is adopted in a common vacuum preservation cover, a valve port is sealed by external atmospheric pressure through internal and external pressure difference, a vacuum state disappears quickly in a short time, and the common vacuum preservation cover is not suitable for preservation with higher requirements (vacuum degree) and longer time (persistence).

In view of this, the present invention is especially provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a long-acting vacuum fresh-keeping cover which can be pumped from inside to outside; after air is pumped out, the vacuum degree can be kept not to be reduced or reduced little for a long time in a high-efficiency sealing way; the container remains at least sealed after the vacuum is removed; the operation process has feedback.

The utility model discloses specifically adopt following technical scheme to realize:

the long-acting vacuum fresh-keeping cover comprises a cover body, a screw cap and a rubber ring, wherein an airflow access passage is formed in the cover body and the screw cap, the screw cap is screwed on the airflow access passage of the cover body, a ball is arranged on the airflow access passage of the screw cap, a rubber pad with an upper through hole and a lower through hole is arranged on the airflow access passage of the cover body, the rubber pad is matched with the ball and the airflow access passage of the cover body, and the rubber ring is arranged on the periphery of the cover body.

Preferably, the lower part of the rubber ring is provided with a pretightening part turning upwards.

Preferably, a ball groove is further formed in the nut, and the ball is arranged in the ball groove.

Preferably, the ball groove is provided with an upper through hole and a lower through hole, the diameter of an opening above the ball groove is larger than that of the ball, a plurality of ball clamping positions with inward circle centers are arranged at the opening below the ball groove, the ball clamping positions are smaller than the diameter of the ball, the ball clamping positions are matched with the ball, the diameter of the circle formed by the opening part of the ball clamping positions is smaller than that of the ball, and the ball part extends out of the opening below the ball groove and is in adaptive contact with the rubber mat.

Preferably, the ball groove is connected to the air inlet/outlet passage of the nut in an air-tight and tight manner by welding or gluing or screwing.

Preferably, a groove is formed in the outer side of the ball groove or the ball groove is connected to the nut to form a circle of groove at the joint, an adaptive O-shaped ring is arranged on the groove, and the O-shaped ring is in interference fit with the airflow inlet and outlet channel of the cover body.

Preferably, the inner side below the outer wall of the nut is provided with one or a plurality of evenly distributed circle center position blocks, the circle center position blocks are protruded inwards, and vertical gaps are formed in the side walls of the circle center position blocks towards the two sides.

Preferably, an inward concave clamping groove corresponding to the position where the circle center is clamped is arranged below the cover body threads, and the clamping groove is matched with the position where the circle center is clamped.

Preferably, the inner side below the outer wall of the screw cap is provided with one or a plurality of evenly distributed circumferential clamping positions, and the circumferential clamping positions are distributed from high to low in the spiral locking direction.

Preferably, a cover body clamping position corresponding to the circumferential clamping position is arranged on the outer side below the cover body threads, and when the screw is screwed to the bottom, the cover body clamping position props against the circumferential clamping position.

The utility model provides a pair of long-term vacuum fresh-keeping lid, its beneficial effect lies in: the ball is pressed on the rubber gasket by the mechanical force of the screw thread instead of closing the valve only by the atmospheric pressure, the cover body and the container are kept airtight by the pre-tightening part of the compressed rubber ring, and the air tightness and the durability which are far higher than those of a common air valve are obtained; feedback is obtained in the operation process, so that the state of the valve is known and better experience is achieved; the container remains sealed even if the vacuum eventually disappears.

Drawings

FIG. 1 is a schematic cross-sectional view of the long-term vacuum fresh-keeping cover of the present invention;

FIG. 2 is an exploded view of the long-term vacuum fresh-keeping cover of the present invention;

FIG. 3 is a schematic view of a ball groove structure;

FIG. 4 is a schematic view of the nut;

FIG. 5 is a schematic view of the structure of the cover;

FIG. 6 is a schematic view of the detent engagement;

FIG. 7 is a schematic view of the use of the long-life vacuum freshness cap.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1-2, the long-acting vacuum fresh-keeping lid provided in this embodiment includes a screw cap 1, a lid body 2, a rubber ring 3, a ball 5 and a rubber pad 6. Both the screw cap 1 and the cover body 2 are provided with an up-down air flow through channel; the inner wall of the nut 1 is provided with an internal thread, the outer side of the opening of the channel of the cover body 2 is provided with an external thread, the nut is in threaded connection with the cover body, the periphery of the cover body 2 is provided with a rubber ring 3, the rubber ring 3 is in interference fit with the opening of the fresh-keeping container, and the air flow of the cover body 2 penetrates through the channel and is provided with a rubber pad.

The nut 1 is internally provided with a ball groove 13, the diameter of an opening at the upper part of the ball groove 13 is larger than that of the ball 5, and the ball 5 can be arranged in the ball groove 13. As shown in fig. 3, the opening below the ball groove 13 is provided with 3 ball detents 131 with inward centers, the ball detents 131 are adapted to the ball 5, and the diameter of the circle formed by the opening of the ball detents 131 is smaller than the diameter of the ball 5, the ball 5 can extend out of the opening of the ball groove 13 for a certain distance without falling out, and the part of the ball 5 extending out of the opening of the ball groove 13 is in adaptive contact with the rubber pad 6.

The ball groove 13 can be welded in the nut 1, a concave circular groove is arranged on the outer side of the welding position, an O-shaped ring 4 is arranged on the circular groove, and the O-shaped ring 4 is in interference fit with a channel of the cover body 2 which is in threaded connection with the nut 1; the diameter of the inner wall channel at the welding position of the upper cover 1 is smaller than that of the round ball 5.

As shown in fig. 4, the inner side below the outer wall of the nut 1 is provided with one or more inward-protruding circle-center-direction detents and the same number of circumferential detents, in this embodiment, 3 detents are provided, and are uniformly distributed, and the detents are 11A, 11B, 11C, 12A, 12B, and 12C in the spiral direction; the side wall of the upper cover 1, where the two ends of each circle center are located, is provided with a vertical gap 14, so that the circle center can slightly deform inwards and outwards.

As shown in fig. 5, one or more inward-recessed slots and the same number of lower seat detents are respectively provided below the threads of the cover 2, which are respectively 3 in this embodiment and uniformly distributed, and according to the spiral direction, the three slots are 21A, 21B, and 21C, and the three lower seat detents are 22A, 22B, and 22C, respectively. The three cover body screens are from high to low according to the screwing direction.

In the process of screwing, as shown in fig. 6, the circle center slides to the position blocking 11A to the clamping grooves 21C and 21B in sequence, and finally slides into the position blocking 21A, at the moment, the screw is screwed to the bottom, and the position blocking 11B slides into the position blocking 21B and the position blocking 11C slides into the position blocking 21C; meanwhile, the

circumferential screens

12A, 12B and 12C are respectively propped by the

lower seat screens

22A, 22B and 22C. When the centre of a circle of each time falls into the clamping groove towards the position of the clamping position, the force applied in the spiral direction and the elastic force of the deformed centre of a circle which restores to the original shape of the clamping position can be timely and clearly fed back to a user; meanwhile, under the action of the elastic force for restoring the original shape and the action of the spiral force, the center of the circle slides to the clamping groove to generate acceleration, so that the circumferential clamping position collides with the lower seat clamping position and generates a click sound to further give feedback.

Through the calculated design, when the circle center slides into the clamping groove 21B towards the clamping position 11A, the ball 5 has an upward moving stroke in the ball groove 13 and is in an air exhaust state; when the circular core slides into the clamping groove 21A, the inner wall channel with the diameter smaller than that of the ball 5 at the welding position of the screw cap 1 tightly presses the ball on the adaptive rubber cushion 6, and the locking state is achieved; the circle center is towards the position of the clamp 11A and not before the clamp slot 21C, the ball 5 can not contact the rubber cushion 6, and the air is in the air release state.

For convenient use, a pointing sign is arranged at the position of the circle center facing the position of the clamping position 11A, and signs in deflation, air suction and locking states are respectively arranged on the

clamping grooves

21C, 21B and 21A.

As shown in fig. 7, when in use, the long-acting vacuum fresh-keeping cover is arranged in the fresh-keeping container, the rubber ring is hermetically sealed on the inner side walls of the cover body and the fresh-keeping container, the screw cap is rotated, the pointing mark is aligned with the air extraction mark, the click sound and the rebound feedback can be heard during the rotation process, the air extraction pump is sleeved at the air outlet of the screw cap to extract air, the O-shaped ring hermetically seals the outer side of the screw cap channel and the inner side of the cover body channel, the vacuum is formed above the ball, the ball is lifted and blocked by the channel on the inner wall of the screw cap; after the air exhaust is finished, the ball is blocked on the adaptive rubber mat through hole by the action of vacuum below and self gravity, and the air exhaust channel is closed; the air pump is taken down, the screw cap is rotated, the pointing mark is aligned with the locking mark, the click sound and the rebound feedback can be heard in the rotating process, and the ball is tightly propped against the rubber gasket by the inner wall channel of the screw cap under the action of the spiral mechanical force.

Even if the vacuum state disappears completely, the air-tight fresh-keeping container still has good air tightness because the rubber ring in interference fit is arranged between the cover body and the container, and the screw cap is also tightly closed with the cover body.

When needing to open, the rotatory nut, the gassing is aimed at to directional sign, and the ball upwards is taken away from the cushion with the spherical screens of ball groove below, and rotatory in-process can be heard and the sound of clicking and the repayment of bounce-back, and the air exhaust passage is opened, and outside air gets into, and vacuum state disappears, can uncap.

The long-acting vacuum fresh-keeping cover provided by the embodiment closes the valve by mechanical force and elastic force instead of only depending on atmospheric pressure, so that the air tightness far higher than that of a common air valve is obtained, and the vacuum degree is not reduced in a short term or is reduced little in a long term; the vacuum is still an airtight fresh-keeping container when completely disappeared; touch feedback is obtained in the operation process, so that the state of the valve is known, and the feeling of security is obtained; and sound and elastic feedback are obtained in the operation process, so that the experience is stronger.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The long-acting vacuum fresh-keeping cover is characterized by comprising a cover body, a screw cap and a rubber ring, wherein an airflow access passage is formed in the cover body and the screw cap, the screw cap is screwed on the airflow access passage of the cover body, a ball is arranged on the airflow access passage of the screw cap, a rubber pad with an upper through hole and a lower through hole is arranged on the airflow access passage of the cover body, the rubber pad is matched with the ball and the airflow access passage of the cover body, and the rubber ring is arranged on the periphery of the cover body.

2. The long-acting vacuum fresh-keeping cover according to claim 1, wherein a ball groove is further formed in the screw cap, and the ball is disposed in the ball groove.

3. The long-acting vacuum fresh-keeping cover according to claim 2, wherein the ball groove has upper and lower through holes, the diameter of the upper opening of the ball groove is larger than the diameter of the ball, a plurality of ball detents with inward centers are disposed at the lower opening of the ball groove, the diameter of the ball detent matched with the ball and formed by the ball detent opening is smaller than the diameter of the ball, and the ball partially extends out of the lower opening of the ball groove and is in fit contact with the rubber pad.

4. The long-term vacuum freshness cover according to any one of claims 2 to 3, wherein said ball groove is hermetically and tightly connected to the air flow passage of said screw cap by welding or gluing or screwing.

5. The long-acting vacuum fresh-keeping cover according to claim 4, wherein a groove is formed on the outer side of the ball groove or a circle of groove is formed at the joint of the ball groove and the screw cap, an adaptive O-shaped ring is arranged on the groove, and the O-shaped ring is in interference fit with the airflow inlet and outlet channel of the cover body.

6. The long-acting vacuum fresh-keeping cover according to claim 1, wherein the inner side of the lower part of the outer wall of the screw cap is provided with one or more evenly distributed circle-center detents, the circle-center detents are inwardly protruded, and the side wall of the circle-center detents at two sides is provided with vertical slits.

7. The long-acting vacuum fresh-keeping cover according to claim 6, wherein an inward-recessed slot corresponding to the radial position of the circle center is arranged below the screw thread of the cover body, and the slot is matched with the radial position of the circle center.

8. The long-acting vacuum fresh-keeping cover according to claim 6, wherein the inner side below the outer wall of the screw cap is provided with one or more evenly distributed circumferential detents, and the circumferential detents are distributed from high to low in the screw locking direction.

9. The long-acting vacuum fresh-keeping cover according to claim 8, wherein a cover body position corresponding to the circumferential position is provided on the outer side below the cover body screw thread, and when the screw is screwed to the bottom, the cover body position abuts against the circumferential position.

10. The long-acting vacuum freshness cover according to claim 1, wherein the lower portion of the rubber ring is provided with a pretightening portion which is turned outwards and upwards.