Double-seal vacuum bag air nozzle capable of exhausting air through pressing

Abstract

The utility model provides a double-seal vacuum bag air tap capable of exhausting air by pressing, which comprises a valve seat combined with a vacuum bag; the sealing gasket is contained in the valve seat, the inner side wall of the pressurizing cover is matched with the outer surface of the valve seat, and the sealing gasket is wrapped in the pressurizing cover; the sealing gasket and the valve seat are sealed in an attached mode. The sealing structure is provided with double seals, the first seal is that the inner side wall of the pressurizing cover is matched with the outer surface of the valve seat, the pressurizing cover is controlled to apply pressure to the sealing gasket by operating the lifting of the thread structure between the pressurizing cover and the valve seat, and the pressing effect is generated between the pressurizing cover and the inclined plane to achieve the airtight effect, and the second seal is that the sealing gasket and the valve seat are attached to each other for sealing. Therefore, even if the pressure cover is also protruded on the sealing bag, the sealing effect is weakened and even the sealing cannot be realized due to the fact that the pressure cover is easily lifted or falls off due to improper pushing, collision and extrusion in the carrying or storing process of the sealing bag, the negative pressure of the double sealing exists, the double sealing also exists, and the sealing effect is not influenced.

Description

Technical Field

[0001] The utility model relates to a double-sealed vacuum bag nozzle with pressing exhaust, belonging to the field of vacuum packaging bag nozzles. Background Art

[0002] With the increasing requirements for packaging quality, vacuum packaging is more and more widely used in daily life and production. The most important component of a vacuum packaging bag is the nozzle. Existing nozzles rely on a pressure cap to apply pressure to ensure sealing.

[0003] For example, the patent application number is CN201720026802.9, and the patent application name is a vacuum bag nozzle for both pumping and exhausting, which discloses that a guide post is arranged on the back of the air plug, and a guide structure matching with the guide post is arranged on the nozzle body. When the gas in the vacuum bag needs to be exhausted, the air plug can move smoothly in the air plug cavity, reducing the exhaust resistance. People can directly squeeze or curl the vacuum bag to exhaust the gas in the vacuum packaging bag, overcoming the defect that a vacuum pump must be used to exhaust the gas in the vacuum bag in the prior art.

[0004] For example, the patent application number is CN201921301472.5, and the patent application name is a vacuum bag nozzle, which discloses that a sealing gasket is placed in the inner cavity of the fixed sleeve, and several air guide holes are designed on the nozzle cover. The nozzle cover and the fixed sleeve are fixed by the mutual clamping of the clamping groove and the convex rib. The structure is simple, the work is stable, the efficiency is high, and it is beautiful and generous.

[0005] The nozzles of the above-disclosed prior art also protrude on the sealing bag. During the handling or storage of the sealing bag, the pressure cap is easily lifted or fallen off due to improper pushing, bumping or squeezing, resulting in a weakened sealing effect or even inability to achieve sealing.

[0006] Therefore, the utility model provides a double-sealed vacuum bag nozzle with pressing exhaust. Content of the Utility Model

[0007] In view of this, the purpose of the utility model is to provide a double-sealed vacuum bag nozzle with pressing exhaust.

[0008] The utility model is realized as follows:

[0009] A double-sealed vacuum bag nozzle with pressing exhaust includes a valve seat. There is a circular plane extending radially around the periphery of the valve seat with an opening at one end, which is combined with the vacuum bag; a ring-shaped grid structure is fixed at the bottom of the other end of the valve seat;

[0010] A sealing gasket is accommodated in the valve seat. The sealing gasket includes a horizontal part and a first cylinder fixed to the bottom surface of the horizontal part. The first cylinder is hollow inside, and an annular groove is formed on the inner wall of the first cylinder;

[0011] A pressure cover, the inner side wall of the pressure cover cooperates with the outer surface of the valve seat to wrap the gasket inside; and the gasket and the valve seat are fitted and sealed.

[0012] As a further improvement, a second cylinder is provided inside the valve seat, and a plurality of convex rings are provided on the outer surface of the second cylinder, and the convex rings cooperate with the grooves on the gasket;

[0013] A circular convex ring is also fixed inside the valve seat, and the convex ring is parallel to the inner wall of the valve seat; the top surface of the circular convex ring is an inclined plane, and the inclined plane is in sealing contact or separated and unsealed with the horizontal part of the gasket.

[0014] As a further improvement, a first thread is provided on the outer edge of the open end of the valve seat;

[0015] A second thread is provided on the inner side wall of the pressure cover;

[0016] The valve seat and the pressure cover are fixed by the cooperation of the first thread and the second thread.

[0017] As a further improvement, a stop ring is provided above the first thread.

[0018] As a further improvement, the outer diameter of the stop ring is larger than the outer diameter of the second thread.

[0019] As a further improvement, the number of the convex rings is 4, and they are evenly distributed around the center of the cylinder.

[0020] As a further improvement, a plurality of first exhaust holes are opened on the top surface of the pressure cover.

[0021] As a further improvement, a plurality of second exhaust holes are opened on the side and bottom of the annular grid structure.

[0022] As a further improvement, the second thread is evenly divided into 4 segments.

[0023] As a further improvement, the gasket is a flexible film.

[0024] The beneficial effects of the present utility model are:

[0025] ①The utility model is provided with double seals. One seal is the cooperation between the inner side wall of the pressure cover and the outer surface of the valve seat. The lifting of the threaded structure between the pressure cover and the valve seat is operated to control the pressure of the pressure cover on the gasket and make it generate a pressing effect with the inclined plane to achieve the airtight effect. The other seal is the fitting seal between the gasket and the valve seat. Therefore, even if the utility model protrudes on the sealing bag, during the handling or storage of the sealing bag, the pressure cover is easily lifted or fallen off due to improper pushing, bumping or squeezing, resulting in a weakened sealing effect or even the inability to achieve sealing. The negative pressure of the double seal of the utility model exists, and the double seal also exists, which does not affect the sealing effect.

[0026] ②The gasket of the present utility model is a flexible film, and the material of the gasket can be integrally formed with TPE material or silicone material; it has strong toughness and will not break under the repeated fitting and separation of the horizontal part and the inclined plane of the annular convex ring of the gasket, and has a long service life. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, so it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic structural diagram of a double-sealed vacuum bag nozzle with pressing and exhaust provided by an embodiment of the present utility model.

[0029] Figure 2 It is an exploded view of a double-sealed vacuum bag nozzle with pressing and exhaust provided by an embodiment of the present utility model. Figure 1 。

[0030] Figure 3 It is an exploded view of a double-sealed vacuum bag nozzle with pressing and exhaust provided by an embodiment of the present utility model. Figure 2 。

[0031] Figure 4 It is a sectional view of a double-sealed vacuum bag nozzle with pressing and exhaust provided by an embodiment of the present utility model.

[0032] Markings in the figure: pressure cover 1, gasket 2, valve seat 3, circular plane 4, annular grid structure 5, first thread 6, stop ring 7, horizontal part 8, first cylinder 9, second cylinder 10, groove 11, convex ring 12, second thread 13, second exhaust hole 14, annular convex ring 15, first exhaust hole 16, inclined plane 17. Detailed Embodiments

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0035] Referring to Figures 1 - 4 As shown, this embodiment provides a specific implementation of a double-sealed vacuum bag nozzle for pressing and exhausting air, including a valve seat 3. There is a circular plane 4 extending radially around the periphery of the valve seat 3 with an opening at one end, which is combined with the vacuum bag; a ring-shaped grid structure 5 is fixed to the bottom of the other end of the valve seat 3;

[0036] A sealing gasket 2 is accommodated in the valve seat 3. The sealing gasket 2 includes a horizontal part 8 and a first cylinder 9 fixed to the bottom surface of the horizontal part 8. The first cylinder 9 is hollow inside, and an annular groove 11 is formed on the inner wall of the first cylinder 9;

[0037] A pressing cover 1, the inner side wall of the pressing cover 1 cooperates with the outer surface of the valve seat 3 to wrap the sealing gasket 2 inside, achieving a primary seal;

[0038] Specifically: the valve seat 3 is combined with the vacuum bag. After the sealing gasket 2 is placed in the valve seat 3, the pressing cover 1 is threadedly connected to the valve seat 3 to wrap the sealing gasket 2 inside. The lifting of the threaded structure between the pressing cover 1 and the valve seat 3 is operated to control the pressing of the pressing cover on the sealing gasket 2 and generate a pressing effect between it and the inclined plane 17 to achieve an airtight effect.

[0039] Among them, a second cylinder 10 is provided inside the valve seat 3. A plurality of convex rings 12 are provided on the outer surface of the second cylinder 10, and the convex rings 12 are engaged with the grooves 11 on the gasket 2 to fix the valve seat 3 and the gasket 2.

[0040] Among them, a ring-shaped convex ring 15 is also fixed inside the valve seat 3. The convex ring 15 is parallel to the inner wall of the valve seat 3. The top surface of the ring-shaped convex ring 15 is an inclined plane 17, and the inclined plane 17 is in sealing contact or non-sealing separation from the horizontal portion 8 of the gasket 2.

[0041] The double sealing between the gasket 2 and the valve seat 3 is realized.

[0042] Specifically, when exhausting the vacuum bag, the gasket 2 does not move up and down, but air will push open the horizontal portion 8 of the gasket 2 from the outside of the valve seat 3 for exhausting. The air in the vacuum bag flows through the valve seat 3, the gasket 2, the pressure cap 1 in sequence and then to the outside of the vacuum bag. After evacuation, the horizontal portion 8 of the gasket 2 will automatically recover and fit on the inclined plane 17, and a negative pressure will be formed to closely fit the gasket and the inclined plane 17, achieving the effect of double sealing.

[0043] Therefore, even in the present utility model, which is also prominent on the sealed bag, during the handling or storage of the sealed bag, the pressure cap 1 is easily lifted or detached due to improper pushing, bumping or squeezing, resulting in a weakened sealing effect or even failure to achieve sealing. The negative pressure of the double sealing in the present utility model exists, and the double sealing also exists, without affecting the sealing effect.

[0044] Among them, the matching structure between the inner side wall of the pressure cap 1 and the outer surface of the valve seat 3 is as follows: an outer edge of the open end of the valve seat 3 is provided with a first thread 6; a second thread 13 is provided on the inner side wall of the pressure cap 1; the valve seat 3 and the pressure cap 1 are fixed through the cooperation of the first thread 6 and the second thread 13.

[0045] Further, a stop ring 7 is provided above the first thread.

[0046] Furthermore, the outer diameter of the stop ring 7 is larger than the outer diameter of the second thread 13.

[0047] Further, the second thread 13 is evenly divided into 4 segments.

[0048] When the valve seat 3 and the pressure cap 1 are fixed through the cooperation of the first thread 6 and the second thread 13, due to the limitation of the stop ring 7, the pressure cap 1 can be easily buckled into the stop ring 7 of the valve seat 3 and screwed with the first thread of the valve seat 3 to prevent the pressure cap 1 from being unscrewed and detached in the reverse direction.

[0049] Among them, the number of the convex rings 12 is 4, and they are evenly distributed at equal distances around the center of the second cylinder 10, which is evenly distributed and easy to process.

[0050] Among them, a plurality of first exhaust holes 16 are formed in the top surface of the pressure cover 1.

[0051] Among them, a plurality of second exhaust holes 14 are formed in the side surface and the bottom surface of the annular grid structure 5.

[0052] The designs of the above-mentioned first exhaust holes 16 and second exhaust holes 14 are both for the air circulation inside and outside the vacuum bag after the equipment is installed.

[0053] Among them, the gasket 2 is a flexible film, and the material of the gasket can be integrally formed by using TPE material or silica gel material; it has strong toughness and will not break under the condition of repeated fitting and separation between the horizontal part of the gasket 2 and the inclined plane 17 of the annular convex ring 15, and has a long service life.

[0054] Furthermore, TPE material is also called artificial rubber or synthetic rubber; it not only has excellent properties such as high elasticity, aging resistance, and oil resistance of traditional cross-linked vulcanized rubber, but also has the characteristics of convenient processing and a wide range of processing methods of ordinary plastics.

[0055] Furthermore, silica gel material, alias: silica gel, is a highly active adsorption material, belonging to amorphous substances, and has the advantages of environmental protection, high temperature resistance, corrosion resistance, good flexibility, and low water absorption.

[0056] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double-sealed vacuum bag nozzle with push-button exhaust, characterized in that Comprising: A valve seat (3), one end of which has an opening, and a circular plane (4) extending radially is provided around the periphery of the valve seat (3) and is combined with a vacuum bag; an annular grid structure (5) is fixed to the bottom of the other end of the valve seat (3); A gasket (2) is accommodated in the valve seat (3). The gasket (2) includes a horizontal portion (8) and a first cylinder (9) fixed to the bottom surface of the horizontal portion (8). The first cylinder (9) is hollow inside, and an annular groove (11) is formed on the inner wall of the first cylinder (9); A pressure cover (1), the inner side wall of the pressure cover (1) is matched with the outer surface of the valve seat (3), the gasket (2) is wrapped inside, and the gasket (2) is in close contact and sealed with the valve seat (3).

2. The double-sealed vacuum bag nozzle for pressing and exhausting air according to claim 1, wherein, A second cylinder (10) is provided inside the valve seat (3). A plurality of convex rings (12) are provided on the outer surface of the second cylinder (10), and the convex rings (12) are matched with the grooves (11) on the gasket (2); An annular convex ring (15) is also fixed inside the valve seat (3), and the convex ring (15) is parallel to the inner wall of the valve seat (3); the top surface of the annular convex ring (15) is an inclined plane (17), and the inclined plane (17) is in close contact and sealed or separated and unsealed with the horizontal portion (8) of the gasket (2).

3. The double-sealed vacuum bag nozzle for pressing and exhausting air according to claim 1, wherein, A first thread (6) is provided on the outer edge of the opening end of the valve seat (3); A second thread (13) is provided on the inner side wall of the pressure cover (1); The valve seat (3) and the pressure cover (1) are fixed by the cooperation of the first thread (6) and the second thread (13).

4. The double-sealed vacuum bag nozzle with pressing and exhausting according to claim 3, characterized in that, A stop ring (7) is provided above the first thread (6).

5. The double-sealed vacuum bag nozzle for pressing and exhausting air according to claim 4, characterized in that, The outer diameter of the stop ring (7) is larger than the outer diameter of the second thread (13).

6. The double-sealed vacuum bag nozzle with pressing exhaust according to claim 1, characterized in that, The number of the convex rings (12) is 4, and they are equidistantly distributed around the center of the second cylinder (10).

7. The double-sealed vacuum bag nozzle for pressing and exhausting air according to claim 1, wherein, A plurality of first exhaust holes (16) are formed on the top surface of the pressure cover (1).

8. The double-sealed vacuum bag nozzle for pressing and exhausting air according to claim 1, characterized in that, A plurality of second exhaust holes (14) are formed on the side and bottom of the annular grid structure (5).

9. The double-sealed vacuum bag nozzle for pressing and exhausting air according to claim 3, characterized in that, The second thread (13) is evenly divided into 4 segments.

10. The double-sealed vacuum bag nozzle with pressing exhaust according to claim 3, characterized in that, The gasket (2) is a flexible film.

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