Waterproof fabric vacuum sealing bag air valve and vacuum sealing bag

Abstract

The utility model discloses waterproof fabric waterproof fabric vacuum sealing bag air valve and the vacuum sealing bag containing this air valve, and the air valve includes valve cover, valve core and valve seat, is equipped with the connecting port on the valve disc of valve seat, is equipped with valve leaf below, is equipped with the air inlet channel in the connecting port, and the valve core covers the air inlet channel, and the valve cover is detachably connected on the connecting port of valve seat, the valve disc bottom surface of valve seat is equipped with a plurality of divergent flow grooves, and the divergent flow groove is linked together with air inlet channel. The utility model discloses through setting up the divergent flow groove on the valve seat bottom surface, provides the preset, low resistance flow channel for the air flow in the bag to the air inlet channel, can quickly gather the air dispersed in each place in the bag and guide to the air valve entrance, avoids the air turbulence, greatly reduces the air -exhausting time, improves the efficiency, even if the bag body fabric is again close to the valve disc bottom surface, also can form the tiny channel at the groove, guarantees that air can pass through the channel and flows to the air inlet, completely solves the plugging problem of waterproof fabric.

Description

Technical Field

[0001] This invention relates to the field of vacuum storage technology, and more specifically to an air valve for a vacuum-sealed bag made of waterproof fabric and a vacuum-sealed bag containing the air valve. Background Technology

[0002] Vacuum-sealed bags reduce the volume of items by removing air from the bag and effectively prevent moisture, mildew, and odors, making them widely used for storing clothing, food, bedding, and other items. One of their core components is a one-way valve installed on the bag. The vacuum pump uses this valve to extract air from the bag, and the valve seals after extraction to prevent backflow. Existing vacuum-sealed bag valves typically include a valve seat, valve core, and valve cover. The valve seat has an air inlet channel, and the valve core is made of elastic material. It opens under negative pressure to allow air to flow out and closes when there is no negative pressure to prevent air from entering. However, this type of valve has the following drawbacks: (1) The air extraction efficiency needs to be improved: When the air pressure inside the bag is low, the air needs to be gathered from all parts of the bag to the air inlet of the air valve. The path is not smooth, resulting in a long air extraction time and low efficiency.

[0003] (2) Not suitable for waterproof fabrics: With the development of technology, in order to enhance the waterproof performance of sealed bags, vacuum bags using waterproof coatings or composite waterproof fabrics have emerged. These fabrics have a smooth surface and a dense texture. When the items inside the bag are compressed, the smooth waterproof fabric may adhere tightly to the bottom of the valve disc, blocking the air inlet and preventing the residual air inside the bag from being completely sucked out, which seriously affects the vacuuming effect. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a vacuum sealing bag valve with high air extraction efficiency and effective prevention of waterproof fabric from blocking the air inlet.

[0005] Another object of the present invention is to provide a vacuum-sealed bag including the above-mentioned air valve, which is particularly suitable for vacuum-sealed bags made of waterproof fabric.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The vacuum-sealed air valve for waterproof fabric includes a valve cover, a valve core, and a valve seat. The valve seat has a connecting port on its valve disc and a valve leaf at its bottom. An air inlet channel is located within the connecting port, and the valve core covers the air inlet channel. The valve cover is detachably connected to the connecting port of the valve seat. Multiple divergent flow channels are formed on the bottom surface of the valve disc of the valve seat, and these channels are connected to the air inlet channel. Even if the bag fabric is tightly fitted, the divergent flow channels will form "tunnels" between the fabric and the valve seat, allowing air to continuously flow towards the central air inlet, thus solving the problem of blockage.

[0007] Preferably, the divergent airflow channels are radially distributed, comprising multiple straight channels arranged radially outward from the periphery of the air intake channel. This design is simple in structure, easy to manufacture, and provides the shortest and most direct path for airflow, resulting in high efficiency.

[0008] Furthermore, the divergent airflow channels are radially distributed, including multiple arc-shaped channels that spirally extend outward from the periphery of the air intake channel. Starting from the air intake, they expand outward in a spiral manner. This design is more in line with the principles of fluid mechanics, enabling smoother guidance of air to generate vortex flow, potentially helping to reduce airflow resistance and gather air from a greater distance.

[0009] A further improvement is made to the design where the depth and / or width of the divergent flow channel gradually decreases from near the inlet of the air intake channel towards the direction away from the inlet. This gradient channel design is more in line with fluid dynamics, further optimizing airflow and improving efficiency.

[0010] A further improved design incorporates a divergent flow channel with a depth of no less than 0.5mm and no more than 1mm. This maximizes the air permeability area while ensuring the valve maintains sufficient strength and does not deform, resulting in a more powerful exhaust capacity. Simultaneously, it reduces material usage, making the valve lighter and more adaptable to the installation requirements of various vacuum compression bags.

[0011] Furthermore, the valve core is made of a flexible material, which normally covers the air intake channel, opens the air intake channel under negative pressure, and seals the air intake channel when the valve cover is screwed onto the valve seat connection port.

[0012] A vacuum-sealed bag includes a bag body on which a vacuum-sealed bag valve for waterproof fabric as described in any of the above claims is installed.

[0013] Preferably, the bag body is made of waterproof fabric.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) Significantly improves pumping efficiency: By setting divergent guide grooves on the bottom surface of the valve seat, a pre-set, low-resistance flow path is provided for the air inside the bag to flow to the air inlet channel. These guide grooves are like a "highway network", which can quickly gather the air dispersed in various parts of the bag and guide it to the air valve inlet, avoid air turbulence, greatly reduce pumping time, and improve efficiency.

[0015] (2) Completely solves the problem of waterproof fabric blockage: When the bag body is made of waterproof fabric, even if the bag body fabric is tightly attached to the bottom plane of the valve seat, the recessed divergent guide grooves can form a stable air channel between the fabric and the valve seat. Air can flow smoothly into the air intake channel along these guide grooves without being completely blocked by the smooth fabric, thus ensuring the thoroughness of the vacuuming operation.

[0016] (3) Simple structure and low cost: The present invention only adds a guide groove design to the existing valve seat structure. No additional parts are required. The manufacturing process is simple and hardly increases the production cost, but brings a significant improvement in performance. It is easy to promote and apply. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the bottom surface of the valve seat in Example 1; Figure 2 This is a side view of Example 1 with the valve cover and valve seat separated. Figure 3 This is a schematic diagram of the bottom surface of the valve seat in Example 2; Figure 4 This is a side view of Example 2. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. Example 1

[0019] like Figures 1 to 2 As shown, the valve of this utility model mainly includes a valve cover 1, a valve core 2, and a valve seat 3. The valve seat 3 is usually fixed to the body of the vacuum-sealed bag by means of heat fusion or other methods. The valve disc of the valve seat 3 has a connection port 4 and a valve leaf 5 at the bottom. The connection port 4 has a through air inlet channel 6. The valve core 2 is made of soft elastic materials such as silicone or rubber and is laid flat on the circumferential platform inside the connection port of the valve seat 3, covering the upper end of the air inlet channel 6 in its natural state. When an external air extraction device (such as an air pump) is aimed at the valve to extract air, the valve core 2 flips upward under the action of the pressure difference between the upper and lower parts, opening the air inlet channel 6, and the air in the bag can be discharged. After the extraction stops, the valve core 2 falls back under the action of its own elasticity and the external atmospheric pressure, the valve cover 1 is screwed onto the connection port of the valve seat 3, and the retaining ring inside the valve cover 1 presses against the valve core 2, sealing the air inlet channel 6.

[0020] The core improvement of this utility model lies in the fact that multiple divergent guide grooves 7 are formed on the bottom surface of the valve disc of the valve seat 3. These guide grooves 7 are directly connected to the inlet of the air intake channel 6, and diffuse and extend outward from the inlet of the air intake channel as the center point. In this embodiment, the guide grooves 7 are radially distributed, including multiple straight grooves arranged radially outward along the periphery of the inlet of the air intake channel. The depth of the divergent guide grooves 7 is not less than 0.5 mm and not more than 1 mm.

[0021] Working principle and beneficial effects: After the air valve is installed on the bag body, the bottom surface of the valve disc of valve seat 3 contacts the inside of the bag body. During vacuuming, the air inside the bag is extracted. At this time, the divergent guide groove 7 plays a key role: (1) Guiding function: The guide groove 7 provides a clear path for air flow, quickly guiding the air far away from the air inlet of the air inlet channel 6 to the inlet, reducing the resistance of air flow, thereby improving the air extraction efficiency.

[0022] (2) Anti-blocking function: When the bag body is made of waterproof fabric, the bag body fabric will stick tightly to the bottom surface around the valve disc of valve seat 3 during the vacuuming process. Without the guide groove, the smooth fabric will seal the entire air intake area like tape. However, the guide groove 7 of this utility model is a recessed groove. Even if the fabric is very tight, it will form tiny channels at the groove, ensuring that air can flow continuously to the air intake through these "underground channels", thus completely solving the problem of blockage by waterproof fabric. Example 2

[0023] like Figure 3 , Figure 4 As shown, the difference between this embodiment and Embodiment 1 lies in the shape of the divergent flow guide trough 7. In this embodiment, the flow guide trough 7 is an arc-shaped trough that spirals outward from the periphery of the inlet of the air intake channel 6. This spiral-shaped flow guide trough also has the functions of divergence and flow guidance, and its arc-shaped structure may better conform to the vortex characteristics of airflow, which can further optimize airflow and reduce flow noise and resistance.

[0024] In some other preferred embodiments, the guide channel 7 can be optimized. For example, the depth and / or width of the guide channel 7 can gradually decrease from near the inlet of the intake channel 6 towards the direction away from the inlet. This gradual design conforms to the principles of fluid dynamics; the flow rate at the inlet is high, requiring a wider flow channel, while the flow rate at the far end is low, and a narrower flow channel is sufficient. This optimizes the structural strength of the valve seat while ensuring performance.

[0025] This invention also protects a vacuum-sealed bag, the bag body of which is equipped with the air valve described in any of the above embodiments. In particular, when the bag body is made of waterproof fabric (such as TPU-coated nylon, PEVA composite film, etc.), the air valve of this invention can exert its greatest advantage, ensuring perfect vacuuming effect.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A vacuum sealing bag valve for waterproof fabric, comprising a valve cover (1), a valve core (2), and a valve seat (3), wherein the valve seat (3) has a connecting port (4) on its valve disc and a valve leaf (5) below it, and an air inlet channel (6) is provided in the connecting port (4), the valve core (2) covers the air inlet channel (6), and the valve cover (1) is detachably connected to the connecting port (4) of the valve seat, characterized in that: The valve seat (3) has multiple divergent guide grooves (7) on the bottom surface of the valve disc, and the divergent guide grooves (7) are connected to the air intake channel.

2. The air valve for the waterproof fabric vacuum sealing bag according to claim 1, characterized in that: The divergent guide groove (7) is radially distributed, including multiple straight grooves arranged radially outward along the periphery of the inlet of the air intake channel.

3. The air valve for the waterproof fabric vacuum sealing bag according to claim 1, characterized in that: The divergent guide groove (7) is radially distributed and includes multiple arc-shaped grooves that spiral outward from the periphery of the air intake channel.

4. The air valve for the waterproof fabric vacuum sealing bag according to any one of claims 1 to 3, characterized in that: The depth and / or width of the divergent guide groove (7) gradually decreases from near the inlet of the air intake channel toward the direction away from the inlet.

5. The vacuum sealing bag valve for waterproof fabric according to any one of claims 1 to 3, characterized in that: The depth of the divergent guide groove (7) is not less than 0.5 mm and not more than 1 mm.

6. The vacuum sealing bag valve for waterproof fabric according to any one of claims 1 to 3, characterized in that: The valve core (2) is made of flexible material and normally covers the air intake channel. Under negative pressure, the air intake channel is opened and the air intake channel is sealed when the valve cover is screwed onto the valve seat connection port.

7. A vacuum-sealed bag, comprising a bag body, characterized in that: The bag body is equipped with a waterproof fabric vacuum sealing bag air valve as described in any one of claims 1 to 6.

8. The vacuum-sealed bag according to claim 7, characterized in that: The bag is made of waterproof fabric.

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