A flow stabilizing valve structure for a hose

Abstract

The utility model discloses a kind of steady flow outlet valve structures for hose, including bottom cover, upper cover and elastic diaphragm;Bottom cover is coaxially connected with upper cover and is enclosed to form valve cavity, the central part of bottom cover is equipped with liquid inlet hole, the central part of upper cover is equipped with liquid outlet hole;Elastic diaphragm is set in valve cavity, and is configured as: in natural state, middle part seals liquid inlet hole;When the pressure of liquid inlet hole side is increased, middle part can be elastically deformed to open liquid inlet hole towards upper cover direction, so that fluid flows out from liquid outlet hole through valve cavity.The utility model is driven by internal pressure by setting the diaphragm structure that can be elastically deformed, realizes the self-adaptive adjustment and stability of hose extrusion flow, and simultaneously ensure reliable sealing after use to prevent air backflow.

Description

Technical Field

[0001] This utility model belongs to the field of hose valve technology, and in particular relates to a structure of a flow-stabilizing liquid outlet valve for hoses. Background Technology

[0002] Tube packaging is widely used in daily chemical and pharmaceutical products such as toothpaste, facial cleanser, and ointments. Currently, mainstream tubes have two significant drawbacks in use: First, insufficient one-way sealing. After the contents are extruded, the tube head cannot effectively prevent air from flowing back into the tube, causing the remaining contents to come into contact with air, making them prone to oxidation, drying, or bacterial growth, thus leading to spoilage and ineffectiveness. Second, uncontrollable extrusion flow. The extrusion volume depends entirely on the user's squeezing force and speed; light squeezing results in insufficient output, affecting efficiency, while heavy squeezing easily leads to excessive output and waste, resulting in a poor user experience. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a flow-stabilizing valve structure for hoses. By setting a diaphragm structure that can be elastically deformed by internal pressure, the flow rate of hose extrusion can be adaptively adjusted and stabilized, while ensuring a reliable seal after use to prevent air backflow.

[0004] Technical solution: To achieve the above objectives, the present invention provides a flow-stabilizing valve structure for a flexible hose, comprising a bottom cover, a top cover, and an elastic diaphragm;

[0005] The bottom cover and the top cover are coaxially connected and enclose to form a valve cavity. The bottom cover has a liquid inlet hole in the center, and the top cover has a liquid outlet hole in the center.

[0006] The elastic diaphragm is disposed within the valve cavity and is configured such that:

[0007] In its natural state, the middle part seals the liquid inlet hole;

[0008] When the pressure on the inlet side increases, the middle part can elastically deform toward the upper cover to open the inlet, allowing fluid to flow out through the valve chamber from the outlet.

[0009] Furthermore, a sealing surface is formed around the liquid inlet hole on the bottom cover; in its natural state, the center of the elastic diaphragm is attached to the sealing surface.

[0010] Furthermore, the inner top surface of the upper cover is provided with an annular boss surrounding the liquid outlet hole, and in the natural state, a gap is formed between the elastic diaphragm and the annular boss.

[0011] Furthermore, the inner top surface of the top cover is provided with at least one microchannel connecting the liquid outlet and the valve chamber.

[0012] Furthermore, an inner top ring is provided on the inner top surface edge of the upper cover, and the upper edge of the elastic diaphragm abuts against the inner top ring;

[0013] Furthermore, the inner wall of the top cover is provided with a plurality of side protrusions located below the inner top ring, and the elastic diaphragm is kept centered by the radial limiting of the side protrusions.

[0014] Furthermore, the elastic diaphragm is disc-shaped and made of NBR rubber.

[0015] Furthermore, the bottom cover and the top cover are connected by threads, snaps, or ultrasonic welding.

[0016] Beneficial effects: This invention effectively solves the problem of air backflow causing deterioration of contents in existing hoses by restoring the elastic diaphragm under its own elasticity, significantly extending the product's shelf life; by utilizing the dynamic change in the gap between the elastic diaphragm deformation and the fixed annular boss, a self-adjusting function for the extrusion flow rate is achieved, allowing users to obtain a relatively stable output regardless of whether they squeeze gently or forcefully, improving the user experience and avoiding waste; the microchannel design serves as a safety redundancy, ensuring limited output even under extreme pressure, avoiding explosive output, and improving reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 for Figure 1 Enlarged structural diagram of region A in the middle;

[0019] Figure 3 This is an enlarged schematic diagram of the valve body. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2As shown, a flow-stabilizing valve structure for a flexible hose includes a bottom cover 2, an upper cover 3, and an elastic diaphragm 4. The bottom cover 2 and the upper cover 3 are coaxially connected and enclose a valve cavity. The bottom cover 2 has an inlet hole 20 in its center, and the upper cover 3 has an outlet hole 30 in its center. The elastic diaphragm 4 is disposed in the valve cavity and is configured such that, in its natural state, its middle portion seals the inlet hole 20; when the pressure on the inlet hole 20 side increases, its middle portion can elastically deform towards the upper cover 3 to open the inlet hole 20, allowing fluid to flow out through the valve cavity from the outlet hole 30. Through the deformation of the elastic diaphragm 4 under pressure from the flexible hose 1, controllable valve opening is achieved, and the deformation returns to its original shape when the pressure disappears, achieving a seal. This realizes both controllable opening and one-way sealing functions. In its natural state, the elastic diaphragm 4 achieves a static seal by relying on its own elasticity, preventing external air from flowing back into the flexible hose 1. When there is internal pressure, the elastic diaphragm 4 undergoes controllable elastic deformation rather than rigid displacement. Its deformation changes with the pressure, automatically adjusting the opening degree to achieve self-stabilized flow output.

[0022] A sealing surface 5 is formed around the liquid inlet hole 20 on the bottom cover 2; in its natural state, the center of the elastic diaphragm 4 is attached to the sealing surface 5. The sealing surface 5 provides a clear and reliable contact area for the elastic diaphragm 4, ensuring the tightness and repeatability of the seal under no-pressure or negative-pressure conditions. It is a key structural guarantee for realizing the effective one-way valve function and preventing the material from oxidizing and deteriorating.

[0023] The inner top surface of the upper cover 3 is provided with an annular protrusion 31 surrounding the liquid outlet 30. In its natural state, a gap C is formed between the elastic diaphragm 4 and the annular protrusion 31. The gap C formed between the annular protrusion 31 and the deformed elastic diaphragm 4 constitutes the main liquid outlet channel. The size of this gap C will dynamically decrease as the deformation (i.e., pressure) of the elastic diaphragm 4 increases, producing a throttling effect on the fluid, thereby making the flow rate increase tend to be gradual.

[0024] The inner top surface of the upper cover 3 is also provided with at least one microchannel 32 connecting the liquid outlet 30 and the valve chamber; when the elastic diaphragm 4 deforms to fit the end face of the annular boss 31, the fluid can flow out through the microchannel 32, thus providing a safe discharge path to prevent overload. When the pressure increases sharply and the elastic diaphragm 4 completely blocks the main gap C, the microchannel 32 is activated as a backup flow channel. It ensures that limited material can still be discharged in extreme cases, avoiding excessive internal pressure or no material discharge at all. At the same time, due to its fixed and small flow cross-sectional area, it fundamentally eliminates explosive liquid discharge.

[0025] like Figure 2 and Figure 3As shown, an inner top ring 33 is provided on the inner top edge of the upper cover 3. The upper edge of the elastic diaphragm 4 abuts against the inner top ring 33, ensuring that the middle part of the diaphragm 4 can stably and accurately fit on the sealing surface 5 in its natural state, ensuring the reliability of the initial seal, and making the subsequent deformation of the diaphragm 4 controllable.

[0026] like Figure 2 and Figure 3 As shown, the inner wall of the upper cover 3 is provided with multiple side protrusions 34 located below the inner top ring 33. The elastic diaphragm 4 is kept centered by the radial limiting of the side protrusions 34. The multiple side protrusions 34 constrain the edge of the diaphragm 4 in the radial direction, preventing it from swaying or twisting in the valve cavity, and ensuring that its deformation is symmetrical and centered. This is an important guarantee for the uniform and stable gap C, the sealing alignment, and the consistency of the flow regulation function.

[0027] like Figure 3 As shown, the inner top ring 33 is a non-closed ring with at least one notch, which forms an upper side flow channel 35; a lower side flow channel 36 is formed between adjacent side protrusions 34, and the upper side flow channel 35 is connected to one of the lower side flow channels 36. When the valve is opened, the fluid path is sequentially: inlet hole 20, lower side flow channel 36, upper side flow channel 35, gap C, outlet hole 30. If the elastic diaphragm 4 deforms to make the gap C zero, the fluid path is sequentially: inlet hole 20, lower side flow channel 36, upper side flow channel 35, microchannel 32, outlet hole 30.

[0028] The elastic diaphragm 4 is circular in shape, with a simple structure and symmetrical force and deformation. It is made of NBR rubber, which has excellent elasticity, resilience and media resistance, ensuring that the elastic diaphragm 4 can perform high-frequency elastic deformation and sealing functions reliably for a long time.

[0029] The bottom cover 2 and the top cover 3 are connected by threads, snaps, or ultrasonic welding. Threads, snaps, or ultrasonic welding are all mature and reliable connection technologies, which ensure that the bottom cover 2 and the top cover 3 can be firmly and sealed together, stably encapsulating the elastic diaphragm 4 in the valve cavity, and facilitating industrial production and assembly.

[0030] In addition, such as Figure 1 or Figure 2 As shown, the inside of the hose 1 needs to be provided with an installation slot or cavity that matches the valve body structure. Specifically, the upper cover 3 of the valve body structure can be connected to the slot or cavity with a snap-fit.

[0031] In summary, the advantages of this invention are as follows: First, by restoring the elastic diaphragm under its own elasticity, the problem of air backflow causing deterioration of the contents in existing hoses is effectively solved, significantly extending the product's shelf life. Second, by utilizing the dynamic change in the gap between the elastic diaphragm deformation and the fixed annular boss, a self-regulating extrusion flow rate is achieved, allowing users to obtain a relatively stable output regardless of whether they squeeze gently or forcefully, improving the user experience and avoiding waste. Furthermore, the microchannel design, as a safety redundancy, ensures limited output even under extreme pressure, preventing explosive liquid discharge and improving product reliability.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A flow-stabilizing valve structure for a flexible hose, characterized in that: Includes a bottom cover (2), an upper cover (3), and an elastic diaphragm (4); The bottom cover (2) and the top cover (3) are coaxially connected and enclosed to form a valve cavity. The bottom cover (2) has a liquid inlet hole (20) in the center, and the top cover (3) has a liquid outlet hole (30) in the center. The elastic diaphragm (4) is disposed within the valve cavity and is configured such that: In its natural state, the middle part of the liquid inlet hole (20) is sealed. When the pressure on the side of the inlet hole (20) increases, the middle part can elastically deform toward the upper cover (3) to open the inlet hole (20) and allow the fluid to flow out through the valve chamber from the outlet hole (30).

2. The structure of a flow-stabilizing valve for a flexible hose according to claim 1, characterized in that: A sealing surface (5) is formed around the liquid inlet hole (20) on the bottom cover (2); in its natural state, the middle part of the elastic diaphragm (4) is attached to the sealing surface (5).

3. The structure of a flow-stabilizing valve for a flexible hose according to claim 1, characterized in that: The inner top surface of the top cover (3) is provided with an annular boss (31) surrounding the liquid outlet (30). In the natural state, a gap (C) is formed between the elastic diaphragm (4) and the annular boss (31).

4. The structure of a flow-stabilizing valve for a flexible hose according to claim 3, characterized in that: The inner top surface of the cover (3) is also provided with at least one microchannel (32) connecting the liquid outlet (30) and the valve chamber.

5. The structure of a flow-stabilizing valve for a flexible hose according to claim 1, characterized in that: The inner top surface edge of the top cover (3) is provided with an inner top ring (33), and the upper edge of the elastic diaphragm (4) abuts against the inner top ring (33).

6. The structure of a flow-stabilizing valve for a flexible hose according to claim 1, characterized in that: The inner wall of the top cover (3) is provided with a plurality of side protrusions (34) located below the inner top ring (33), and the elastic diaphragm (4) is kept centered by the radial limiting of the side protrusions (34).

7. The structure of a flow-stabilizing valve for a flexible hose according to claim 1, characterized in that: The elastic diaphragm (4) is circular and made of NBR rubber.

8. The structure of a flow-stabilizing valve for a flexible hose according to claim 1, characterized in that: The bottom cover (2) and the top cover (3) are connected by threads, snaps or ultrasonic welding.

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