One-way air valve

Abstract

The utility model discloses a one-way air valve, which relates to the technical field of machinery and comprises a first valve body, an elastic piece and a second valve body, an exhaust passage is arranged in the first valve body, an air inlet passage is arranged in the second valve body, the elastic piece is arranged between the air inlet passage and the exhaust passage, and the diameter of the elastic piece is larger than the drift diameter of the air inlet passage. The elastic piece is installed between the exhaust channel of the first valve body and the air inlet channel of the second valve body, the problem that a metal valve element ball in an existing one-way air valve is prone to rusting is solved, the service life of the one-way air valve is prolonged, it is guaranteed that the one-way air valve can be normally used for a long time, and maintenance and replacement cost is reduced; meanwhile, the structural design is simple, and machining and production are convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field, specifically belongs to a one-way air valve. BACKGROUND

[0002] The one-way valve is a device that fluid can only flow into the inlet, and the outlet medium cannot flow back. It is commonly known as a one-way valve, also known as a check valve or non-return valve.

[0003] The utility model patent with the authorization announcement number CN218377842U discloses a one-way air valve, which solves the problems of large force required during installation, great inconvenience of installation, loosening after long-term use in breathable shoes or breathing shoes, and easy falling.

[0004] However, the one-way air valve in the prior art has the problem of reduced service life due to the direct communication of the exhaust passage with the outside world, which causes the internal valve ball to rust and further reduces the service life of the one-way valve. UTILITY MODEL CONTENTS

[0005] To solve the problem of the one-way air valve in the prior art, the exhaust passage directly communicates with the outside world, which causes the internal valve ball to rust and further reduces the service life of the one-way valve. The utility model provides a one-way air valve.

[0006] The technical scheme adopted by the utility model is as follows: a one-way air valve, comprising a first valve body, an elastic member and a second valve body, an exhaust passage is formed in the first valve body, an air inlet passage is formed in the second valve body, the elastic member is installed between the air inlet passage and the exhaust passage, and the diameter of the elastic member is greater than the diameter of the air inlet passage.

[0007] Further, a third valve body is installed in the exhaust passage, a stepped hole is formed in the third valve body, the large-diameter end face of the stepped hole abuts against the lower surface of one side of the elastic member, and the diameter of the stepped hole is greater than the diameter of the elastic member.

[0008] Further, a third valve body is installed in the exhaust passage, a through hole is formed in the third valve body, a limiting protrusion is provided above the through hole, and the limiting protrusion abuts against the lower surface of one side of the elastic member.

[0009] Further, an arc-shaped protrusion for plugging the outlet end of the air inlet passage is provided on the upper surface of the elastic member, and the diameter of the arc-shaped protrusion is greater than the diameter of the air inlet passage.

[0010] Further, a fixing head is provided on one side of the elastic member, and the fixing head is clamped in the limiting groove communicating with the exhaust passage.

[0011] Further, a first groove is arranged between the arc-shaped protrusion and the fixing head, and the first groove is arranged on the upper surface of the elastic member.

[0012] Further, a second groove is arranged between the arc-shaped protrusion and the fixing head, and the second groove is arranged on the lower surface of the elastic member.

[0013] Further, a plurality of clamping protrusions are arranged on the outer side wall of the third valve body, and a clamping groove is arranged on the inner side wall of the first valve body, and the clamping protrusions are clamped in the clamping groove.

[0014] Further, a plurality of check structures are arranged on the outer walls of the first valve body and the second valve body.

[0015] Further, the material of the elastic member is plastic or rubber.

[0016] According to the technical scheme, the beneficial effects of the single-way air valve are as follows.

[0017] The single-way air valve solves the problem that the metal valve ball in the existing single-way air valve is prone to rust, prolongs the service life of the single-way air valve, ensures that the single-way air valve can be used normally for a long time, reduces the maintenance and replacement cost, and has a simple structure and is convenient for processing and production. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0019] Figure 1 The structural schematic diagram provided by the embodiments of the present application is shown in the figure.

[0020] Figure 2 The structural schematic diagram of the elastic member in the figure is shown in the figure. Figure 1 The structural schematic diagram of the first valve body and the second valve body in the figure is shown in the figure.

[0021] Figure 3 The structural schematic diagram of the third valve body in the figure is shown in the figure. Figure 1 The structural schematic diagram of the elastic member in the figure is shown in the figure.

[0022] Figure 4 The top view of the figure is shown in the figure. Figure 3 The top view of the figure is shown in the figure.

[0023] Figure 5 The top view of the figure is shown in the figure. Figure 1 The structural schematic diagram of the third valve body in the figure is shown in the figure.

[0024] BRIEF DESCRIPTION OF DRAWINGS: 1, the first valve body; 2, elastic member; 201, arc protrusion; 202, first groove; 203, second groove; 204, fixed head; 3, second valve body; 4, air inlet channel; 5, exhaust channel; 501, limiting groove; 6, third valve body; 601, limiting protrusion; 602, clamping protrusion; 7, reverse structure. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0027] In the description of the utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the application is placed, which is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the device or element indicated or implied to have a specific orientation, a specific orientation and operation, and therefore cannot be understood as limiting the utility model.

[0028] The following will be described in conjunction with Figures 1-5 Detailed description of the utility model.

[0029] Embodiments

[0030] Embodiment one

[0031] In this embodiment, as Figure 1 shown, a one-way air valve includes a first valve body 1, an elastic member 2 and a second valve body 3, the first valve body 1 is internally provided with an exhaust channel 5, the second valve body 3 is internally provided with an air inlet channel 4, the elastic member 2 is installed between the air inlet channel 4 and the exhaust channel 5, the diameter of the elastic member 2 is greater than the diameter of the air inlet channel 4, and the diameter of the air inlet channel 4 is less than the diameter of the exhaust channel 5.

[0032] In this embodiment, as Figure 1 shown, a one-way air valve includes a first valve body 1, an elastic member 2 and a second valve body 3, the first valve body 1 is internally provided with an exhaust channel 5, the second valve body 3 is internally provided with an air inlet channel 4, the elastic member 2 is installed between the air inlet channel 4 and the exhaust channel 5, the diameter of the elastic member 2 is greater than the diameter of the air inlet channel 4, and the diameter of the air inlet channel 4 is less than the diameter of the exhaust channel 5.Figure 4 As shown, the third valve body 6 is installed in the exhaust passage 5, and a stepped hole is formed in the third valve body 6. The end face of the large-diameter end of the stepped hole abuts against the lower side surface of the elastic member 2, and the diameter of the stepped hole is larger than the diameter of the elastic member 2. The stepped hole not only abuts the lower side surface of the elastic member 2 against the inner wall of the exhaust passage 5, so that the one side of the elastic member 2 is fixed and the elastic member 2 is prevented from falling under the action of gravity, but also suspends the other side of the elastic member 2, so that the elastic member 2 is bent and deformed under the action of the airflow to open the outlet end of the intake passage 4. The diameter of the stepped hole is larger than the diameter of the elastic member 2, so that the elastic member 2 has a space for bending and deforming, that is, the normal work of the elastic member 2 is not affected.

[0033] In the embodiment, as shown in Figure 1 and Figure 3 , the upper surface of the elastic member 2 is provided with an arc-shaped protrusion 201 for plugging the outlet end of the intake passage 4, and the diameter of the arc-shaped protrusion 201 is larger than the diameter of the intake passage 4. The arc-shaped protrusion 201 is in close contact with the intake passage 4. The centers of the intake passage 4, the arc-shaped protrusion 201 and the exhaust passage 5 are located on the same axis, so that the air pressure is stable during the gas exchange, and the smooth flow of the gas is ensured.

[0034] In use, the gas in the shoe body enters the intake passage 4 through the gas exchange system, then enters the exhaust passage 5 from the gap between the arc-shaped protrusion 201 and the outlet end of the intake passage 4, and then enters the exhaust passage 5 through the exhaust passage 5, so that the gas is discharged. When the airflow flows reversely from the exhaust passage 5, the airflow pushes the arc-shaped protrusion 201 of the elastic member 2 into the outlet end of the intake passage 4. Since the diameter of the arc-shaped protrusion 201 is larger than the diameter of the intake passage 4, the arc-shaped protrusion plugs the outlet end of the intake passage 4, so that the gas is prevented from flowing reversely into the intake passage 4, and the one-way conduction of the airflow is realized.

[0035] In the embodiment, as shown in Figure 1 , Figure 3 and Figure 5 , a first groove 202 is arranged between the arc-shaped protrusion 201 and the fixed head 204, and the first groove 202 is formed in the upper surface of the elastic member 2. By arranging the first groove between the arc-shaped protrusion 201 and the fixed head 204, the weight of the side of the elastic member 2 fixed by the fixed head 204 can be effectively reduced, and the elastic member 2 can be better bent and deformed under the subsequent airflow.

[0036] In the embodiment, as shown in Figure 1 and Figure 4As shown, the outer wall of the third valve body 6 is provided with a plurality of clamping protrusions 602, and the inner wall of the second valve body 3 is provided with clamping grooves, the clamping protrusions 602 are clamped in the clamping grooves, the clamping protrusions 602 are distributed in the circumferential direction of the outer wall of the third valve body 6, and the clamping grooves correspond to the clamping protrusions 602. Through the cooperation of the clamping protrusions 602 and the clamping grooves, the stable connection between the third valve body 6 and the second valve body 3 is realized.

[0037] In the specific implementation process, it is particularly worth pointing out that the arc-shaped protrusion 201, the first groove 202, the second groove 203, and the fixing head 204 on the elastic member 2 can be integrally formed. The elastic member 2 can be integrally formed with the first valve body 1 and the second valve body 2, one side being the fixed side and the other side being the outer suspended side. The material of the elastic member 2 can be plastic or rubber material, which has good elasticity and waterproof performance.

[0038] In this embodiment, as shown in Figure 1 and Figure 2 , the outer walls of the first valve body 1 and the second valve body 3 are each provided with a plurality of check structures 7. After installation, the check structure 7 can prevent the one-way air valve from retreating, so that the check structure 7 on the second valve body 3 can effectively prevent the one-way air valve in the breathing shoe or air-conditioning shoe from gradually moving outward of the shoe body during long-term use.

[0039] The check structure 7 is a check tooth, a plurality of check teeth are equally distributed in the axial direction of the first valve body 1 and the second valve body 3, and the directions of the check teeth of the first valve body 1 and the second valve body 3 are opposite. The check surface of the check tooth is clamped in the shoe body, and the check surface plays a check effect, while the other side of the check tooth can play a guiding role. When installing, the plurality of check structures are more easily pushed into the shoe body, and the plurality of check teeth are clamped in the shoe body. By clamping the plurality of check teeth inside the shoe body, compared with the existing first flange and second flange installed on both sides of the side wall of the shoe body, it is more convenient and labor-saving to reduce the cost of manual labor. At the same time, the plurality of check teeth make the connection more firm, and the plurality of check teeth are evenly distributed in the axial direction of the second valve body 3.

[0040] The check tooth is a continuous ring tooth or a ring tooth discontinuously distributed in the circumferential direction, and the check surface of the check tooth can be arranged at an acute angle or a right angle with the axial direction of the second valve body 3. This part will not be described in detail here, and reference can be made to the prior art.

[0041] Embodiment Two

[0042] This embodiment provides another optional solution for the shape of the check structure on the basis of Embodiment One.

[0043] In this embodiment, as shown in Figure 1 and Figure 4As shown, a third valve body 6 is installed inside the exhaust passage 5. The third valve body 6 has a through hole inside, and a limiting protrusion 601 is provided above the through hole. The limiting protrusion 601 abuts against the lower surface of one side of the elastic member 2. The limiting protrusion 601 presses the lower surface of one side of the elastic member 2 against the inner wall of the exhaust passage 5, thus fixing one side of the elastic member 2 and preventing it from falling under gravity. The other side of the elastic member 2 is suspended, allowing it to bend and deform under the action of airflow, opening the outlet end of the intake passage 4.

[0044] Example 3

[0045] Based on Embodiment 1, this embodiment provides another alternative solution for the shape of the reversible structure.

[0046] In this embodiment, as Figure 1 , Figure 3 and Figure 5 As shown, a fixing head 204 is provided on one side of the elastic member 2, and the fixing head 204 is engaged in the limiting groove 601 that communicates with the exhaust channel 5. By providing the fixing head 204 on the elastic member 2 and limiting the fixing head 204 in the limiting groove 601, the stability of the fixing side of the elastic member 2 is further increased, so that the fixing side of the elastic member 2 can be better fixed in the exhaust channel 5.

[0047] Example 4

[0048] Based on Embodiment 1, this embodiment provides another alternative solution for the shape of the reversible structure.

[0049] In this embodiment, as Figure 1 and Figure 3 As shown, a second groove 203 is also provided between the arc-shaped protrusion 201 and the fixing head 204, and the second groove 203 is formed on the lower surface of the elastic member 2. The second groove 203 on the lower surface of the elastic member 2 further reduces the weight of the fixed side of the elastic member 2, and the elastic member 2 can bend and deform better under the subsequent airflow.

[0050] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A one-way air valve characterized by: It includes a first valve body (1), an elastic member (2) and a second valve body (3), the first valve body (1) is internally provided with an exhaust passage (5), the second valve body (3) is internally provided with an air inlet passage (4), the elastic member (2) is installed between the air inlet passage (4) and the exhaust passage (5), and the diameter of the elastic member (2) is greater than the diameter of the air inlet passage (4).

2. The one-way air valve of claim 1, wherein: A third valve body (6) is installed in the exhaust passage (5), the third valve body (6) is internally provided with a stepped hole, the large-diameter end face of the stepped hole abuts against the lower surface of one side of the elastic member (2), and the diameter of the stepped hole is greater than the diameter of the elastic member (2).

3. The one-way air valve of claim 1, wherein: A third valve body (6) is installed in the exhaust passage (5), the third valve body (6) is internally provided with a through hole, the upper part of the through hole is provided with a limiting protrusion (601), and the limiting protrusion (601) abuts against the lower surface of one side of the elastic member (2).

4. The one-way air valve of claim 1, wherein: An arc-shaped protrusion (201) for plugging the outlet end of the air inlet passage (4) is arranged on the upper surface of the elastic member (2), and the diameter of the arc-shaped protrusion (201) is greater than the diameter of the air inlet passage (4).

5. The one-way air valve of claim 4, wherein: One side of the elastic member (2) is provided with a fixing head (204), and the fixing head (204) is clamped in the limiting groove (501) communicated with the exhaust passage (5).

6. The one-way air valve of claim 5, wherein: A first groove (202) is arranged between the arc-shaped protrusion (201) and the fixing head (204), and the first groove (202) is arranged on the upper surface of the elastic member (2).

7. The one-way air valve of claim 5, wherein: A second groove (203) is further arranged between the arc-shaped protrusion (201) and the fixing head (204), and the second groove (203) is arranged on the lower surface of the elastic member (2).

8. The one-way air valve of claim 2, wherein: A plurality of clamping protrusions (602) are arranged on the outer side wall of the third valve body (6), and a clamping groove is arranged on the inner side wall of the first valve body (1), and the clamping protrusions (602) are clamped in the clamping groove.

9. The one-way air valve of claim 1, wherein: The outer walls of the first valve body (1) and the second valve body (3) are both provided with a plurality of reverse stopping structures (7).

10. The one-way air valve of claim 1, wherein: The material of the elastic member (2) is plastic or rubber.

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