One-way valve for vacuum fresh-keeping sealing bag

By designing hidden annular exhaust holes and raised sheets in the one-way valve of the vacuum cleansing sealed bag, the problem of vacuum valve susceptibility and invisible vacuum conditions is solved, achieving higher sealing and intuitive vacuum status judgment.

CN222559277UActive Publication Date: 2025-03-04ZHONGSHAN RUIXI PLASTIC CO LTD
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Patent Information

Application Number
CN202421434242.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-21
Publication Date
2025-03-04
Estimated Expiration
2034-06-21

AI Technical Summary

Technical Problem

The air vents of existing vacuum check valves are susceptible to external foreign objects, and it is impossible to intuitively judge the vacuum condition in the vacuum cleansing sealed bag.

Method used

A one-way valve for vacuum cleansing sealing bag is designed. By providing a hidden annular exhaust hole in the projection of the base, external foreign objects are avoided, and a raised sheet is provided on the top surface of the valve core to facilitate the determination of the vacuum state.

Benefits of technology

It effectively prevents external foreign objects from contaminating the vacuum valve, improves sealing, and intuitively judges the vacuum state through the raised sheet, solving the visibility problem of vacuum conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a one-way valve for a vacuum fresh-keeping sealing bag, which comprises a base, a sealing ring, a sealing ring, a sealing ring, a sealing ring, a sealing ring and a sealing ring, and is characterized in that a lug boss is arranged on the base and is internally provided with an air exhaust hole; the valve element is arranged on the protruding part in a covering mode, a first exhaust channel is formed between the valve element and the protruding part, and a protruding sheet is arranged on the top face of the valve element; the clamping ring is arranged outside the valve element in a clamped mode so that the valve element and the protruding part can be detachably connected together, a second exhaust channel is formed between the valve element and the clamping ring, and an annular exhaust hole is formed between the top of the valve element and the top of the clamping ring; the exhaust hole, the first exhaust channel, the second exhaust channel and the annular exhaust hole can be communicated in sequence; the hidden annular exhaust hole is formed, so that the problem that in the background technology, external foreign matter easily falls into the exhaust hole is solved, and the visuality problem of the vacuum condition in the vacuum fresh-keeping sealing bag can be solved by arranging the protruding sheet on the top face of the valve element.
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Description

Technical Field

[0001] The utility model relates to the technical field of one-way valves, in particular to a one-way valve used for vacuum fresh-keeping sealed bags. Background Art

[0002] The existing vacuum one-way valve, as described in patent CN218178024U, includes an upper cover, a valve core and a base, wherein the upper cover has an annular flange, which is engaged with the base to form a chamber, the chamber accommodates the valve core, and the center of the upper cover has an air extraction hole. However, the existing vacuum one-way valve has at least the following deficiencies:

[0003] (1) The air extraction hole is set as a circular hole, and foreign matter can easily fall into the air extraction hole, causing pollution to the inside of the vacuum check valve and damage to the sealing performance;

[0004] (2) There is a lack of visual identification of the vacuum condition inside the vacuum sealed bag.

[0005] Therefore, it is necessary to improve the prior art. Utility Model Content

[0006] The present invention aims to solve at least one of the problems existing in the prior art to a certain extent. To this end, the present invention proposes a one-way valve for a vacuum fresh-keeping sealed bag, which solves the problem in the background technology that foreign matter can easily fall into the air extraction hole by forming a hidden annular exhaust hole.

[0007] In addition, the problem of visibility of the vacuum condition in the vacuum fresh-keeping sealed bag can be solved by arranging a raised sheet on the top surface of the valve core.

[0008] The above purpose is achieved through the following technical solutions:

[0009] A one-way valve for a vacuum fresh-keeping sealed bag, comprising:

[0010] A base, wherein a raised portion is provided on the base, and an air extraction hole is opened in the raised portion;

[0011] A valve core is covered on the protrusion, and a first exhaust passage is formed between the valve core and the protrusion;

[0012] A clamping ring is clamped outside the valve core to detachably connect the valve core and the protruding portion, a second exhaust passage is formed between the valve core and the clamping ring, and an annular exhaust hole is formed between the top of the valve core and the top of the clamping ring;

[0013] The air extraction hole, the first exhaust channel, the second exhaust channel and the annular exhaust hole may be communicated in sequence.

[0014] In some embodiments, a boss portion extending outward is provided at the bottom outer edge of the raised portion, and the first exhaust channel includes at least a first air guide groove provided on the outer peripheral surface of the raised portion, and a second air guide groove provided on the top of the boss portion and connected to the first air guide groove.

[0015] In some embodiments, the valve core includes a top valve core surface, a side valve core surface extending downward from the outer edge of the top valve core surface, and a bottom valve core surface extending outward from the bottom of the side valve core surface, the top valve core surface is arranged on the top surface of the raised portion, the side valve core surface is sleeved outside the raised portion, the bottom valve core surface is arranged on the top surface of the boss portion, and a convex strip is arranged on the top surface of the boss portion;

[0016] The valve core is made of soft silicone, and the base and the clamping ring are both made of hard plastic.

[0017] In some embodiments, the retaining ring includes a top ring portion and a sleeve ring portion extending downward from the outer edge of the top ring portion, the top ring portion is pressed against the bottom valve core surface, the sleeve ring portion is sleeved on the outside of the bottom valve core surface, the annular exhaust hole is formed between the top ring portion and the top of the side valve core surface, and the second exhaust channel is formed between the sleeve ring portion and the outside of the bottom valve core surface.

[0018] In some embodiments, the second exhaust passage includes at least guide grooves formed on inner surfaces of the top ring portion and the sleeve ring portion.

[0019] In some embodiments, a snap-fit ​​groove is provided on the inner side wall of the base, and a snap-fit ​​portion is provided on the outer side wall of the collar portion, and the snap-fit ​​portion and the snap-fit ​​groove are detachably snap-fitted together.

[0020] In some embodiments, the top surface of the bottom valve core surface is inclined upward from the inside to the outside, and a pressing portion inclined downward from the outside to the inside is provided on the bottom surface of the top ring portion, and the pressing portion can be pressed tightly against the bottom valve core surface.

[0021] In some embodiments, an annular pressure line is provided at the bottom of the air extraction hole, the annular pressure line is a flange structure, the annular pressure line is coaxially arranged with the air extraction hole, and a cylinder extending downward is provided in the middle of the valve core, the cylinder can be inserted into the air extraction hole and pressed against the annular pressure line.

[0022] In some embodiments, a raised sheet is provided on the top surface of the valve core above the cylinder, the cylinder has an axial hole with an open bottom, and the raised sheet is located above the axial hole.

[0023] In some embodiments, the protrusion is arranged to protrude from the top surface of the base;

[0024] Alternatively, a groove portion is provided at the top of the base, the protrusion portion is provided on the bottom surface of the groove portion, the clamping ring is clamped outside the valve core and the lower part of the clamping ring is sleeved in the groove portion, and the top of the clamping ring is pressed tightly against the top of the base.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] 1. The utility model provides a one-way valve for a vacuum fresh-keeping sealed bag, which solves the problem in the background technology that foreign matter easily falls into the air extraction hole by forming a hidden annular exhaust hole.

[0027] 2. The convex sheet can be used to visually know whether the inside of the vacuum fresh-keeping sealed bag is in a vacuum state, which can solve the problem of visibility of the vacuum condition in the vacuum fresh-keeping sealed bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of the one-way valve in the first embodiment. Figure 1 ;

[0029] Figure 2 It is a three-dimensional schematic diagram of the one-way valve in the first embodiment. Figure 2 ;

[0030] Figure 3 is an exploded schematic diagram of the one-way valve in the first embodiment;

[0031] Figure 4 is a structural cross-sectional view of the one-way valve in the first embodiment;

[0032] Figure 5 is a three-dimensional schematic diagram of the base in the first embodiment;

[0033] Figure 6 is a three-dimensional schematic diagram of the valve core in the embodiment;

[0034] Figure 7 is a three-dimensional schematic diagram of a clamping ring in an embodiment;

[0035] Figure 8 is a three-dimensional schematic diagram of the one-way valve in the second embodiment;

[0036] Fig. 9 It is an exploded schematic diagram of the one-way valve in the second embodiment. DETAILED DESCRIPTION

[0037] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation methods of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0038] Embodiment 1: Figures 1 to 7 As shown, this embodiment provides a one-way valve for a vacuum fresh-keeping sealed bag, comprising:

[0039] A base 1, on which a raised portion 11 is provided, and in which an air extraction hole 12 is provided;

[0040] The valve core 2 is covered on the protruding portion 11, and a first exhaust passage 101 is formed between the valve core 2 and the protruding portion 11;

[0041] A clamping ring 3 is clamped outside the valve core 2 to detachably connect the valve core 2 and the protruding portion 11 together, a second exhaust passage 102 is formed between the valve core 2 and the clamping ring 3, and an annular exhaust hole 103 is formed between the top of the valve core 2 and the top of the clamping ring 3;

[0042] The air extraction hole 12 , the first exhaust channel 101 , the second exhaust channel 102 and the annular exhaust hole 103 may be connected in sequence.

[0043] The one-way valve for a vacuum fresh-keeping sealed bag provided in this embodiment solves the problem in the background art that foreign matter can easily fall into the air extraction hole by forming a hidden annular exhaust hole 103 .

[0044] In addition, a new form of exhaust design is adopted, and the air in the vacuum fresh-keeping sealed bag is discharged outward after passing through the exhaust hole 12, the first exhaust channel 101, the second exhaust channel 102 and the annular exhaust hole 103 in sequence.

[0045] In this embodiment, a boss portion 13 extending outward is provided at the bottom outer edge of the raised portion 11, and the first exhaust channel 101 at least includes a first air guide groove 110 provided on the outer peripheral surface of the raised portion 11, and a second air guide groove 130 provided on the top of the boss portion 13 and connected to the first air guide groove 110. At the same time, the first exhaust channel 101 also includes a gap formed between the top surface of the base 1 and the bottom surface of the valve core 2. It has a simple structure and a reasonable design, which effectively ensures that the air in the vacuum fresh-keeping sealing bag can efficiently enter the second exhaust channel 102 through the air extraction hole 12, the gap between the top surface of the base 1 and the bottom surface of the valve core 2, the first air guide groove 110, and the second air guide groove 130 and finally be discharged outward.

[0046] Furthermore, the valve core 2 includes a top valve core surface 21, a side valve core surface 22 extending downward from the outer edge of the top valve core surface 21, and a bottom valve core surface 23 extending outward from the bottom of the side valve core surface 22. The top valve core surface 21 is arranged on the top surface of the protrusion 11, the side valve core surface 22 is sleeved outside the protrusion 11, and the bottom valve core surface 23 is arranged on the top surface of the boss portion 13. It has a simple structure and reasonable design, and can increase the contact surface between the valve core 2 and the protrusion 11 and the base 1 to a certain extent, thereby ensuring the vacuum sealing effect of the vacuum check valve. A convex strip 131 is arranged on the top surface of the boss portion 13, so that the bottom valve core surface 23 of the valve core 2 can be more effectively pressed against the boss portion 13 of the base 1.

[0047] Furthermore, the valve core 2 is made of soft silicone, and the base 1 and the clamping ring 3 are both made of hard plastic. The structure is simple, and the above design is conducive to improving the sealing performance of the vacuum one-way valve during use after assembly.

[0048] Furthermore, the retaining ring 3 includes a top ring portion 31 and a sleeve ring portion 32 extending downward from the outer edge of the top ring portion 31, the top ring portion 31 is pressed against the bottom valve core surface 23, the sleeve ring portion 32 is sleeved on the outside of the bottom valve core surface 23, the second exhaust channel 102 is formed between the sleeve ring portion 32 and the outside of the bottom valve core surface 23, the annular exhaust hole 103 is formed between the top ring portion 31 and the top of the side valve core surface 22, the annular exhaust hole 103 is an exhaust channel with a very small gap distributed on the annular circumference, and is a hidden exhaust hole, which effectively prevents foreign matter from easily falling into the exhaust hole.

[0049] In this embodiment, the second exhaust channel 102 at least includes a guide groove 300 formed on the inner surfaces of the top ring portion 31 and the sleeve ring portion 32, which has a simple structure and a reasonable design. The lower portion of the guide groove 300 is connected to the second air guide groove 130 of the first exhaust channel 101, and the upper portion is connected to the annular exhaust hole 103, thereby realizing efficient exhaust of the vacuum one-way valve.

[0050] Furthermore, a clamping groove 104 is provided on the inner wall of the base 1, and a clamping portion 321 is provided on the outer wall of the ring portion 32. The clamping portion 321 and the clamping groove 104 are detachably clamped together, and the structure is simple, thereby realizing a detachable connection between the clamping ring 3 and the base 1, and confining the valve core 2 between the clamping ring 3 and the base 1.

[0051] Furthermore, the top surface of the bottom valve core surface 23 is inclined upward from the inside to the outside, and a pressing portion 311 is inclined downward from the outside to the inside on the bottom surface of the top ring portion 31. The pressing portion 311 can be pressed tightly against the bottom valve core surface 23, so as to better confine the valve core 2 between the retaining ring 3 and the base 1 and on the raised portion 11.

[0052] In this embodiment, an annular pressure line 121 is provided at the bottom of the air extraction hole 12. The annular pressure line 121 is a flange structure. The annular pressure line 121 is coaxially arranged with the air extraction hole 12. A cylinder 24 extending downward is provided in the middle of the valve core 2. The cylinder 24 can be tightly plugged into the air extraction hole 12 and pressed against the annular pressure line 121. Under normal conditions, the cylinder 24 can be plugged into the air extraction hole 12 and pressed against the annular pressure line 121, thereby improving the sealing of the connection between the cylinder 24 and the air extraction hole 12 and avoiding air leakage. When the air is extracted, the cylinder 24 and the annular pressure line 121 are slightly separated, and the aperture in the vacuum fresh-keeping sealing bag enters the first exhaust channel 101 through the gap between the cylinder 24 and the annular pressure line 121 and the air extraction hole 12.

[0053] Furthermore, a raised sheet 25 is provided above the cylinder 24 and on the top surface of the valve core 2. The cylinder 24 has an axial hole 240 with an open bottom, and the raised sheet 25 is located above the axial hole 240. If the vacuum fresh-keeping sealed bag is in a vacuum state, the raised sheet 25 will be sunken because the internal air pressure is lower than the external air pressure. If the raised sheet 25 is not sunken, it indicates that the internal air pressure of the vacuum fresh-keeping sealed bag is almost equal to the external air pressure, and there is no negative pressure (vacuum) or it is very small in the vacuum fresh-keeping sealed bag. Therefore, the user can intuitively know whether the vacuum fresh-keeping sealed bag is in a vacuum state through the raised sheet 25, which can solve the problem of visibility of the vacuum condition in the vacuum fresh-keeping sealed bag.

[0054] A clamping column that can be used to connect with a water-blocking component is arranged at the bottom of the base 1, so as to facilitate the expanded use of the vacuum one-way valve provided in this embodiment.

[0055] A plurality of recessed grooves are arranged at intervals at the bottom of the base 1. The recessed grooves have an air guiding function to prevent the vacuum fresh-keeping sealing bag from sticking to the bottom and causing poor air extraction.

[0056] like Figures 1 to 7 As shown, a groove portion 14 is provided on the top of the base 1, and the protrusion 11 is provided on the bottom surface of the groove portion 14, the clamping ring 3 is clamped outside the valve core 2 and the lower part of the clamping ring 3 is sleeved in the groove portion 14, and the top of the clamping ring 3 is pressed tightly against the top of the base 1.

[0057] Embodiment 2: Figure 8 and Fig. 9 As shown, this embodiment provides a one-way valve for a vacuum fresh-keeping sealed bag, which is different from the first embodiment in that:

[0058] The protrusion 11 is disposed protruding from the top surface of the base 1 .

[0059] Users can reasonably set the form of the vacuum check valve according to product design and usage requirements.

[0060] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A one-way valve for a vacuum fresh-keeping sealed bag, characterized in that: include: A base (1), wherein a raised portion (11) is provided on the base (1), and an air extraction hole (12) is provided in the raised portion (11); A valve core (2) is covered on the raised portion (11), and a first exhaust passage (101) is formed between the valve core (2) and the raised portion (11); A clamping ring (3) is clamped outside the valve core (2) to detachably connect the valve core (2) and the protruding portion (11), a second exhaust passage (102) is formed between the valve core (2) and the clamping ring (3), and an annular exhaust hole (103) is formed between the top of the valve core (2) and the top of the clamping ring (3); The air extraction hole (12), the first exhaust channel (101), the second exhaust channel (102) and the annular exhaust hole (103) may be connected in sequence.

2. A one-way valve for a vacuum fresh-keeping sealed bag according to claim 1, characterized in that: A boss portion (13) extending outward is arranged at the bottom outer edge of the raised portion (11), and the first exhaust channel (101) comprises at least a first air guide groove (110) arranged on the outer peripheral surface of the raised portion (11), and a second air guide groove (130) arranged on the top of the boss portion (13) and connected to the first air guide groove (110).

3. A one-way valve for a vacuum fresh-keeping sealed bag according to claim 2, characterized in that: The valve core (2) comprises a top valve core surface (21), a side valve core surface (22) extending downward from the outer edge of the top valve core surface (21), and a bottom valve core surface (23) extending outward from the bottom of the side valve core surface (22), wherein the top valve core surface (21) is arranged on the top surface of the raised portion (11), the side valve core surface (22) is sleeved outside the raised portion (11), and the bottom valve core surface (23) is arranged on the top surface of the boss portion (13), and a convex strip (131) is arranged on the top surface of the boss portion (13); The valve core (2) is made of soft silicone, and the base (1) and the clamping ring (3) are both made of hard plastic.

4. A one-way valve for a vacuum fresh-keeping sealed bag according to claim 3, characterized in that: The retaining ring (3) includes a top ring portion (31) and a sleeve ring portion (32) extending downward from the outer edge of the top ring portion (31), wherein the top ring portion (31) is pressed against the bottom valve core surface (23), and the sleeve ring portion (32) is sleeved on the outer side of the bottom valve core surface (23), and the annular exhaust hole (103) is formed between the top of the top ring portion (31) and the top of the side valve core surface (22), and the second exhaust channel (102) is formed between the sleeve ring portion (32) and the outer side of the bottom valve core surface (23).

5. A one-way valve for a vacuum fresh-keeping sealed bag according to claim 4, characterized in that: The second exhaust passage (102) comprises at least a guide groove (300) formed on the inner surfaces of the top ring portion (31) and the sleeve ring portion (32).

6. A one-way valve for a vacuum fresh-keeping sealed bag according to claim 4, characterized in that: A clamping groove (104) is provided on the inner side wall of the base (1), and a clamping portion (321) is provided on the outer side wall of the collar portion (32); the clamping portion (321) and the clamping groove (104) are detachably clamped together.

7. A one-way valve for a vacuum fresh-keeping sealed bag according to claim 4, characterized in that: The top surface of the bottom valve core surface (23) is arranged to be inclined upward from the inside to the outside, and a pressing portion (311) is arranged on the bottom surface of the top ring portion (31) to be inclined downward from the outside to the inside. The pressing portion (311) can be pressed tightly against the bottom valve core surface (23).

8. A one-way valve for a vacuum fresh-keeping sealed bag according to any one of claims 1 to 7, characterized in that: An annular pressure line (121) is arranged at the bottom of the air extraction hole (12); the annular pressure line (121) is a flange structure; the annular pressure line (121) is arranged coaxially with the air extraction hole (12); a cylinder (24) extending downward is arranged in the middle of the valve core (2); the cylinder (24) can be tightly plugged into the air extraction hole (12) and pressed against the annular pressure line (121).

9. A one-way valve for a vacuum fresh-keeping sealed bag according to claim 8, characterized in that: A protruding sheet (25) is provided on the top surface of the valve core (2) above the cylinder (24); the cylinder (24) has an axial hole (240) with an open bottom; and the protruding sheet (25) is located above the axial hole (240).

10. A one-way valve for a vacuum fresh-keeping sealed bag according to any one of claims 1 to 7, characterized in that: The raised portion (11) is arranged to protrude from the top surface of the base (1); Alternatively, a groove portion (14) is provided at the top of the base (1), and the protrusion portion (11) is provided on the bottom surface of the groove portion (14); the clamping ring (3) is clamped outside the valve core (2) and the lower part of the clamping ring (3) is sleeved in the groove portion (14); the top of the clamping ring (3) presses the bottom valve core surface (23) of the valve core (2) against the boss portion (13) of the base (1).