Vacuum grain storage bag

Abstract

The utility model discloses a vacuum grain storage bag, which comprises a bag body, a valve seat is welded on the bag body, the valve seat is provided with an air tap, the outer end of the air tap is provided with a valve cover, the valve cover is provided with a central hole and a slot, the slot is arranged around the central hole, the outer side of the slot is open, the bottom of the slot is provided with an exhaust hole, and the valve cover is movably connected with an air plug. The air plug comprises a plug column and a limiting boss arranged at the inner end of the plug column, and a limiting step capable of blocking the limiting boss when the air plug is pulled up outwards is arranged in the center hole. A sealing cover capable of being inserted into the inserting groove to form a first layer of airtight structure when the air plug falls inwards is arranged on the periphery of the plug column, a limiting boss located on the outer side of the sealing cover is further arranged on the air plug, and the limiting boss abuts against the outer end face of the valve seat in a sealed mode when the air plug falls inwards to form a second layer of airtight structure. The sealing device has the advantages of simple structure, convenience in operation and good sealing performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to a grain storage bag technical field especially relates to a vacuum grain storage bag. BACKGROUND

[0002] The use of vacuum bags such as grain storage bags is becoming increasingly common to effectively extend the shelf life of grains and other agricultural products. On these vacuum bags, a dedicated air valve is usually provided for venting or connecting a gas pump for air extraction. The main function of these air valves is to help remove air inside the bag, prevent oxidation, mold or insect damage, and thus maintain the freshness and quality of the stored items.

[0003] However, existing air valve designs often have complex structures and cumbersome operation processes. For example, many traditional air valves require users to perform multiple rotation or push-pull operations during air extraction, which not only increases the difficulty of use, but also may lead to improper operation and affect the air extraction effect. In addition, the complex structure may also cause poor sealing of the air valve, leading to air leakage and reducing the effectiveness and reliability of the vacuum bag.

[0004] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and the utility model is made based on this situation. SUMMARY

[0005] The utility model aims at overcoming the deficiencies of the prior art, and provides a vacuum grain storage bag with simple structure, convenient operation and good sealing performance.

[0006] The utility model discloses the following technical scheme:

[0007] To solve the above technical problems, the utility model provides a vacuum grain storage bag, including the bag body of vacuum grain storage bag, the valve seat is welded on the bag body, the air cock is equipped in the valve seat, the valve cover is equipped with the center hole and the insertion slot that sets up around the center hole and opens outside in the air cock outer end, the insertion slot bottom is equipped with the exhaust hole that communicates the inside and outside of the air cock, the valve cover is movably connected with the air plug that is used for opening and closing the air cock;

[0008] The air plug includes the plug column that is inserted in the center hole and can move in and out of the center hole, the limiting boss is equipped in the inner end of the plug column, the limiting step that can block the limiting boss when the air plug is pulled outwards is equipped in the center hole;

[0009] The periphery of the plug column is equipped with the sealing cover that can be inserted into the insertion slot to form the first layer of airtight structure when the air plug falls inwards, the limiting eave that is located outside the sealing cover is further equipped on the air plug, the limiting eave is sealed and abuts on the outer end surface of the valve seat and forms the second layer of airtight structure when the air plug falls inwards.

[0010] In order to further solve the technical problems to be solved by the utility model, the utility model provides a vacuum grain storage bag, the sealing cover and the slot are annular, the sealing cover is arranged around the plug column, and the side wall of the sealing cover is provided with a wedge-shaped sealing wedge which gradually widens from inside to outside; during the falling process of the plug to the inside, the sealing cover is gradually inserted into the slot, and the sealing wedge gradually tightly contacts with the side wall of the slot to form a first layer of airproof structure; during the pulling process of the plug to the outside, the sealing cover is gradually separated from the slot, so that the exhaust hole is communicated with the outside.

[0011] In order to further solve the technical problems to be solved by the utility model, the utility model provides a vacuum grain storage bag, the outer end of the plug is provided with a handle part which protrudes from the valve seat.

[0012] In order to further solve the technical problems to be solved by the utility model, the utility model provides a vacuum grain storage bag, the outer end of the center hole and the inner end of the limiting boss are provided with chamfers.

[0013] In order to further solve the technical problems to be solved by the utility model, the utility model provides a vacuum grain storage bag, the plug is a flexible rubber plug.

[0014] In order to further solve the technical problems to be solved by the utility model, the utility model provides a vacuum grain storage bag, the valve cover and the valve seat are detachably connected, and a sealing ring is arranged between the valve cover and the valve seat.

[0015] In order to further solve the technical problems to be solved by the utility model, the utility model provides a vacuum grain storage bag, the valve cover is connected on the valve seat through threads.

[0016] In order to further solve the technical problems to be solved by the utility model, the utility model provides a vacuum grain storage bag, the bag body is further provided with a handle.

[0017] In order to further solve the technical problems to be solved by the utility model, the utility model provides a vacuum grain storage bag, the bag body is further provided with a sealing zipper.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The design of the air valve on the vacuum grain storage bag is simple and efficient, and only simple pulling and pressing operations on the air plug can realize the two functions of air extraction and sealing. This design is simple in structure, not only reduces the complexity of the user in the operation process, but also significantly improves the convenience of use, without the need for additional tools or complex steps, allowing the user to quickly and effectively switch the air valve. In addition, the air valve realizes simple operation without sacrificing its sealing performance. The double sealing structure of the sealing cover and the limiting eave effectively improves the sealing performance of the air valve, prevents gas leakage, and ensures efficient control of the gas. Whether in the air extraction or air sealing state, the air valve can provide excellent sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings, in which:

[0021] Figure 1 is a disassembled schematic view of the present application;

[0022] Figure 2 is a cross-sectional schematic view of the present application;

[0023] Figure 3 is a cross-sectional schematic view of the air valve when it is exhausting or extracting air;

[0024] Figure 4 is a cross-sectional schematic view of the air valve when it is closed;

[0025] Figure 5 is a structural schematic view of the grain storage bag embodiment one;

[0026] Figure 6 is a structural schematic view of the grain storage bag embodiment two;

[0027] Figure 7 is a structural schematic view of the grain storage bag embodiment three. DETAILED DESCRIPTION

[0028] In order for those skilled in the art to better understand the technical scheme of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] As Figures 1 to 4The vacuum grain storage bag is provided with a unique air valve, which is mainly used for exhausting or connecting a gas pump to perform air extraction. The air valve comprises a valve seat 1, which is provided with an air nozzle 11, and an outer end of the air nozzle 11 is provided with a valve cover 2, the valve cover 2 is provided with a central hole 21 and a slot 23 surrounding the central hole 21 and open on the outside, the bottom of the slot 23 is provided with an exhaust hole 231 communicating the inside and outside of the air nozzle 11, and the valve cover 2 is movably connected with an air plug 3 for opening and closing the air nozzle 11. The air valve of the embodiment has a simple structure, and through the cooperation of the valve seat 1, the valve cover 2 and the air plug 3, good air tightness and easy operation are achieved

[0030] The air plug 3 comprises a plug column 31 inserted in the central hole 21 and movable in and out of the central hole 21, and a limiting boss 32 arranged at the inner end of the plug column 31, and the central hole 21 is provided with a limiting step 22 capable of stopping the limiting boss 32 when the air plug 3 is pulled outwards.

[0031] Double sealing design: the periphery of the plug column 31 is provided with a sealing cover 33 capable of being inserted into the slot 23 when the air plug 3 falls inwards to form a first layer of air tight structure, and the air plug 3 is further provided with a limiting eave 34 located outside the sealing cover 33, which is sealed and abuts against the outer end surface of the valve seat 1 when the air plug 3 falls inwards and forms a second layer of air tight structure.

[0032] When the air plug 3 falls inwards due to negative pressure, the sealing cover 33 is inserted into the slot 23 to form a layer of sealing, and the limiting eave 34 contacts the outer end surface of the valve seat 1 to form a second layer of sealing. The two layers of air tight structure ensure that the gas cannot leak out through the slot 23 of the valve cover 2, thereby ensuring the sealing effect of the air valve. The double sealing structure of the sealing cover 33 and the limiting eave 34 effectively improves the sealing performance of the air valve, prevents gas leakage and ensures efficient control of the gas.

[0033] Further, the sealing cover 33 and the slot 23 are designed in an annular structure to ensure consistent sealing effect in the entire 360-degree range. The sealing cover 33 is arranged around the plug column 31 to form a complete annular closed structure. This design not only helps the balance of sealing, but also ensures reliable air tightness during the insertion and extraction of the air plug 3 in any direction.

[0034] A wedge-shaped sealing wedge 331 is designed on the side wall of the sealing cover 33. The shape of the sealing wedge 331 is gradually widened from inside to outside, and this wedge-shaped design enables the sealing wedge 331 to gradually insert into the slot 23 during the inward falling of the air plug 3. During this process, the wedge-shaped structure gradually contacts the side wall of the slot 23, and finally forms an air tight structure. The advantage of this design is that as the sealing wedge 331 gradually tightens the side wall of the slot 23, the sealing effect is enhanced, effectively preventing gas leakage.

[0035] During the process of pulling out the gas plug 3, the sealing cover 33 gradually detaches from the insertion slot 23. This action causes the sealing wedge 331 to gradually loosen from the close contact with the insertion slot 23, and eventually completely detach from the side wall of the insertion slot 23, thereby opening the passage and allowing the exhaust hole 231 to communicate with the external air. This design not only facilitates the discharge of gas, but also provides convenience for subsequent equipment operation, ensuring that the internal air pressure can be quickly discharged when needed. Overall, this design combines efficient sealing performance and convenient operation characteristics.

[0036] As shown in Figure 3 When performing the exhaust or air extraction operation, the gas plug 3 needs to be pulled outwards. As the gas plug 3 is lifted, the sealing cover 33 gradually detaches from the insertion slot 23. At this time, the gas inside the vacuum bag can be smoothly discharged through the exhaust hole 231. This process effectively reduces the pressure inside the vacuum bag, achieving the outward discharge of internal gas.

[0037] As shown in Figure 4 When the exhaust or air extraction is completed, the gas plug 3 will automatically return to its original position under the action of the negative pressure inside the bag. This automatic return function allows the gas plug 3 to return to its original position under the action of negative pressure, forming a temporary seal. However, the sealing state at this time is only preliminary, temporarily preventing the entry of external gas.

[0038] To ensure complete sealing of the gas valve, it is necessary to further press the gas plug 3 with the hand. By manually pressing, the sealing wedge 331 is completely squeezed into the insertion slot 23, tightly adhering to the side wall of the insertion slot. At this time, the sealing wedge 331 and the insertion slot 23 are in an interference fit state, meaning that they are combined very tightly without any gap. In this state, the gas valve achieves complete sealing effect, ensuring that the gas inside the vacuum bag cannot leak out and external air cannot enter the bag, thereby maintaining the vacuum state inside the bag. This design is not only simple to use, but also can greatly ensure the long-term sealing reliability of the vacuum bag.

[0039] Further, the limiting eaves 34 functions as follows: during the process of the gas plug 3 falling inward, the limiting eaves 34 will contact the outer end face of the valve seat 1, forming a physical barrier and effectively preventing the gas plug 3 from continuing to insert inward. This design has at least two advantages: on the one hand, it prevents the gas plug 3 from moving inward excessively, ensuring that it remains in the ideal working position within the movement range; on the other hand, the limiting eaves 34 seals against the outer end face of the valve seat 1 when the gas plug 3 falls inward and forms a second layer of air-tight structure, enhancing the sealing effect.

[0040] Further, the outer end of the air plug 3 is provided with a handle part 35. This handle part 35 is designed for manual operation, which is very convenient for users to grab and pull out the air plug 3 when needed to exhaust air. The presence of the handle part not only improves the convenience of operation, but also reduces the difficulties that users may encounter during use, making the entire exhaust process more smooth and labor-saving.

[0041] Further, the outer end of the center hole 21 and the inner end of the plug column 31 are both provided with chamfers, which can guide the air plug 3 to be smoothly inserted into the center hole 21, reducing the resistance and friction during insertion, thereby effectively reducing the wear between components. This design not only helps to prolong the service life of the air plug assembly, but also improves the operation efficiency and reliability of the entire device.

[0042] Further, the air plug 3 is a flexible rubber plug, such as rubber or silicone material.

[0043] Further, the valve cover 2 and the valve seat 1 are detachably connected, which provides great convenience for users to install and maintain. And a sealing ring 4 is provided between the valve cover 2 and the valve seat 1 to enhance the sealing effect and prevent gas leakage. The detachable connection structure here is preferably a threaded connection structure, that is, the valve cover 2 is connected to the valve seat 1 by threads.

[0044] The air valve is designed simply and efficiently, and only needs to be pulled up and pressed down simply to realize the functions of air extraction and sealing. This design is simple, which not only reduces the complexity of users during operation, but also significantly improves the convenience of use, without the need for additional tools or complex steps, allowing users to quickly and effectively switch the air valve. In addition, the air valve realizes simple operation without sacrificing its sealing performance. Whether in the air extraction or sealing state, the air valve can provide excellent sealing effect.

[0045] As shown in Figures 5 to 7 The grain storage bag of the utility model includes a bag body 5, which is designed to store grains and provides moisture-proof, insect-proof and reliable sealing protection. The sealing air valve on the bag body 5 ensures that the air in the bag can be effectively extracted to achieve the effect of vacuum preservation.

[0046] The valve seat 1, which is a key component of the air valve, is stably fixed on the bag body 5 by welding. Further, the bag body 5 is also provided with a handle 6 for convenient carrying and moving. This design takes into account the needs of users who may need to frequently carry during use, making it more convenient and labor-saving to carry the grain storage bag when it is full of grains.

[0047] In addition, to provide additional sealing protection, the bag body 5 is also equipped with a sealing zipper 7. This sealing zipper not only ensures the tight closure of the bag opening, but also provides users with a practical function of quick opening and closing, enhancing the convenience and safety of the grain storage bag in multiple uses.

[0048] This design integrates convenience and practicality, enabling the grain storage bag to meet daily storage needs while providing excellent vacuum sealing performance.

Claims

1. A vacuum grain storage bag, characterized by: The utility model relates to a kind of vacuum storage bag, including bag (5), the bag (5) is welded with valve seat (1), the valve seat (1) is equipped with air cock (11), the outer end of air cock (11) is equipped with valve cover (2), the valve cover (2) is equipped with center hole (21), and the insertion slot (23) of center hole (21) is arranged and outside open, the insertion slot (23) bottom is equipped with exhaust hole (231) for communicating the inside and outside of air cock (11), the valve cover (2) is movably connected with air plug (3) for opening and closing air cock (11); The air plug (3) includes a plug column (31) inserted into the center hole (21) and movable inside and outside the center hole (21), and a limiting boss (32) arranged at the inner end of the plug column (31), and the center hole (21) is provided with a limiting step (22) capable of stopping the limiting boss (32) when the air plug (3) is pulled outward; The outer periphery of the plug column (31) is provided with a sealing cover (33) capable of being inserted into the insertion slot (23) when the air plug (3) falls inward to form a first layer of airtight structure, and the air plug (3) is further provided with a limiting eave (34) located outside the sealing cover (33), which sealingly abuts against the outer end face of the valve seat (1) when the air plug (3) falls inward and forms a second layer of airtight structure.

2. A vacuum storage bag according to claim 1, wherein: The sealing cover (33) and the insertion slot (23) are both annular, the sealing cover (33) surrounds the plug column (31), and the side wall of the sealing cover (33) is provided with a wedge-shaped sealing wedge (331) gradually widening from inside to outside; during the inward falling process of the air plug (3), the sealing cover (33) gradually inserts into the insertion slot (23), and the sealing wedge (331) gradually tightly contacts with the side wall of the insertion slot (23) to form a first layer of airtight structure; during the outward pulling process of the air plug (3), the sealing cover (33) gradually separates from the insertion slot (23), so that the exhaust hole (231) is communicated with the outside.

3. A vacuum storage bag according to claim 1, wherein: The outer end of the air plug (3) is provided with a handle part (35) protruding from the valve seat (1).

4. A vacuum storage bag according to claim 1, wherein: The outer end of the center hole (21) and the inner end of the limiting boss (32) are both provided with chamfers.

5. A vacuum storage bag according to claim 1, wherein: The air plug (3) is a flexible rubber plug.

6. A vacuum storage bag according to claim 1, wherein: The valve cover (2) and the valve seat (1) are detachably connected, and a sealing ring (4) is arranged therebetween.

7. A vacuum storage bag according to claim 6, wherein: The valve cover (2) is connected on the valve seat (1) by threads.

8. A vacuum storage bag according to claim 1, wherein: The bag (5) is further provided with a handle (6).

9. A vacuum storage bag according to claim 1, wherein: The bag (5) is further provided with a sealing zipper (7).

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