One-way valve

Abstract

The one-way valve comprises a rubber valve body and a one-way sealing lip arranged at one end of the rubber valve body, a framework is arranged in the rubber valve body and comprises a supporting section and an elastic section arranged on the supporting section in a protruding mode, and the rubber valve body is provided with a buckling ring groove. An extrusion block opposite to the buckling ring groove is arranged on the elastic section of the framework, the end, away from the supporting section, of the elastic section is obliquely arranged in the direction of the buckling ring groove, and through the design that the elastic section of the framework is matched with the buckling ring groove, mechanical interlocking of the valve body and the framework is achieved, and the structural stability is enhanced; the inclined design of the elastic section enables pre-tightening force to be generated during assembly, and the reset performance of the sealing lip is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to one -way valve field especially relates to a one -way valve. BACKGROUND

[0002] Traditional rubber one -way valve adopts pure rubber structure or simple metal sheet skeleton, and there are significant defects under high pressure, high frequency working condition: first, the rubber valve body lacks rigid support and is easy to creep deformation, leading to the sealing lip and valve seat contact pressure attenuation;Second, the interface bonding strength of the skeleton and rubber is insufficient, and long -term pulse pressure is easy to produce delamination failure;Third, the existing buckling structure is mostly plane occlusion, and uneven stress distribution can easily cause rubber tearing. Especially in the dynamic pressure scene such as automobile fuel system, the above -mentioned problems can cause valve sealing failure, fuel backflow and other serious faults. Although there are studies trying to improve the bonding force by increasing the thickness of the skeleton or punching the surface, but it will sacrifice the elasticity of the valve body and aggravate stress concentration. SUMMARY

[0003] The utility model designs the new -type one -way valve design scheme that can optimize structure strength, interface combination reliability and stress distribution, and provides a one -way valve.

[0004] In order to solve the above -mentioned technical problem, the utility model is solved through the following technical scheme: a one -way valve, including rubber valve body and the one -way sealing lip of setting in rubber valve body one end, the rubber valve body is provided with the skeleton, the skeleton includes support section and the elastic section of being provided with in support section, the rubber valve body is opened and is buckled and is connected ring groove, the elastic section of the skeleton is provided with extrusion block opposite buckled and is connected ring groove, the elastic section is away from support section one end and is inclined to the direction of buckled and is connected ring groove direction setting.

[0005] Through the cooperation design of the elastic section of the skeleton and the buckled and connected ring groove, the mechanical interlocking of the valve body and the skeleton is realized, and the structure stability is enhanced;The inclined design of the elastic section produces pre -tightening force during assembly, and the reset performance of the sealing lip is improved.

[0006] The utility model further sets up: the support section is annular, and the elastic section is provided with several, and several The elastic section is annular array and is provided with in support section one end.

[0007] Through the above -mentioned technical scheme, the elastic section distribution of annular array makes the buckling force evenly transmitted to the valve body circumference, avoids the rubber tearing caused by local stress concentration.

[0008] The utility model further sets up: the skeleton is provided with extension section towards one -way sealing lip one end, and the extension section part is located in one -way sealing lip.

[0009] By adopting the technical scheme, the extension section is embedded inside the sealing lip, a double support structure is formed under the action of fluid pressure, and the sealing lip is prevented from excessive deformation and failure.

[0010] The utility model further sets up: the support section is annular and the inner ring or / and outer ring has the concave and convex lines for increasing the contact area.

[0011] By adopting the technical scheme, the concave and convex lines design increases the contact area and the binding force of the skeleton and rubber, and effectively inhibits the interface peeling of the skeleton and rubber in long-term use.

[0012] The utility model further sets up: the skeleton is provided with the auxiliary support column, and the auxiliary support column extends out the rubber valve body.

[0013] By adopting the technical scheme, the auxiliary support column provides external positioning fulcrum, which not only enhances the pressure collapse resistance of the valve body, but also facilitates accurate alignment during automatic assembly.

[0014] The utility model further sets up: the support section center axis and the center axis of the rubber valve body are coincidently arranged.

[0015] By adopting the technical scheme, the coaxial design ensures that the fluid pressure is symmetrically transmitted along the center axis, and avoids the single-side wear problem of the sealing lip caused by eccentric load. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is an external structure schematic diagram of a one-way valve in the embodiment;

[0017] Fig. 2 It is an overall perspective structure schematic diagram of a one-way valve in the embodiment;

[0018] Fig. 3 It is an overall sectional view of a one-way valve in the embodiment.

[0019] The part names referred to by the numbers in the above drawings are as follows: 1, rubber valve body; 11, buckle connection ring groove; 2, one-way sealing lip; 3, skeleton; 31, support section; 32, elastic section; 33, extension section; 34, extrusion block; 35, concave and convex lines; 4, auxiliary support column. DETAILED DESCRIPTION

[0020] The utility model will be further described in detail in combination with the drawings and the embodiments.

[0021] Embodiment one:

[0022] A one-way valve, referring to Figs. 1 to 3The rubber valve body 1 and the one-way sealing lip 2 are integrally arranged and made of rubber material, the cross section of the one-way sealing lip 2 is composed of two opposite sealing sheets and is tapered, the two sealing sheets of the sealing lip are arranged in a separated but close state away from the rubber valve body 1, and are mainly used for limiting the gas from entering the rubber valve body 1 from one end of the one-way sealing lip 2, the rubber valve body 1 is in a circular column structure, and a framework 3 is arranged in the rubber valve body 1, the framework 3 is made of pu material, the framework 3 includes a supporting section 31 in a ring shape and elastic sections 32 protruding from one end of the supporting section 31, the supporting section 31 is located in the rubber valve body 1, and the center axes of the two are arranged in a coincident mode, the elastic sections 32 are arranged in a plurality of modes, the elastic sections 32 are in a long strip shape and are arranged in a ring array at one end of the supporting section 31, the long strip-shaped elastic sections 32 and the ring-shaped supporting section 31 are integrally injection molded, and the rubber valve body 1 is provided with a buckling ring groove 11, in the embodiment, the buckling ring groove 11 is arranged on the outer ring of the rubber valve body 1, but is not limited to the outer ring, and can be the inner ring of the buckling ring groove 11.

[0023] The buckling ring groove 11 is in a ring shape and is used for installing the rubber valve body 1 in a corresponding position, the elastic sections 32 of the framework 3 are arranged opposite to the buckling ring groove 11, and the elastic sections 32 are provided with extrusion blocks 34 opposite to the buckling ring groove 11, and one end of the elastic sections 32 away from the supporting section 31 is arranged in a direction inclined to the buckling ring groove 11, when the rubber valve body 1 is buckled with the corresponding mounting hole through the buckling ring groove 11, the elastic sections 32 are always arranged in an elastic deformation mode in a direction to the buckling ring groove 11 when being extruded, and can be used for assisting the buckling ring groove 11 to be arranged in a sealing mode with the mounting position.

[0024] The framework 3 is provided with an extension section 33, the extension section 33 is arranged on the supporting section 31 or the elastic section 32, in the embodiment, the extension section 33 is arranged on part of the elastic section 32, and can also be arranged in the supporting section 31, the extension section 33 partially extends into the one-way sealing lip 2, the supporting section 31 is in a ring structure, and the inner ring or / and the outer ring is provided with concave-convex patterns 35 for increasing the area, the concave-convex patterns 35 can increase the connection strength when the rubber valve body 1 is vulcanized, the framework 3 is provided with auxiliary support columns, the auxiliary support columns extend out of the rubber valve body 1, and the main function of the auxiliary support columns is to fix and support the framework 3 on a mold when the rubber valve body 1 and the one-way sealing lip 2 are vulcanized, after the rubber valve body 1 and the one-way sealing lip 2 are vulcanized, the rubber valve body 1 and the one-way sealing lip 2 completely wrap the framework 3, and then the auxiliary support columns exposed outside the rubber valve body 1 are removed through a correction process.

[0025] The structural strength of the rubber valve body 1 is enhanced by increasing the skeleton 3, the sealing strength of the buckle ring groove 11 and the installation place is enhanced by the elastic section 32 and the extrusion fast, the sealing strength of the one-way sealing lip 2 is enhanced by the extension section 33, and compared with the pure rubber one-way valve, the rubber valve in the embodiment has better sealing performance.

Claims

1. A one-way valve, comprising a rubber valve body (1) and a one-way sealing lip (2) disposed at one end of the rubber valve body (1), characterized in that, The rubber valve body (1) is provided with a skeleton (3), the skeleton (3) includes a support section (31) and an elastic section (32) protruding from the support section (31). The rubber valve body (1) has a fastening ring groove (11). The elastic section (32) of the skeleton (3) is provided with a compression block (34) opposite to the fastening ring groove (11). The end of the elastic section (32) away from the support section (31) is inclined towards the fastening ring groove (11).

2. A one-way valve according to claim 1, characterized in that, The support section (31) is annular, and a plurality of elastic sections (32) are provided, with the plurality of elastic sections (32) arranged in an annular array protruding from one end of the support section (31).

3. A one-way valve according to claim 1, characterized in that, The skeleton (3) is provided with an extension section (33) at one end facing the one-way sealing lip (2), and the extension section (33) is partially located inside the one-way sealing lip (2).

4. A one-way valve according to claim 1, characterized in that, The support section (31) is annular, with raised textures (35) on its inner and / or outer rings to increase the contact area.

5. A one-way valve according to claim 1, characterized in that, The frame (3) is provided with an auxiliary support column, which extends out of the rubber valve body (1).

6. A one-way valve according to claim 1, characterized in that, The central axis of the support section (31) coincides with the central axis of the rubber valve body (1).

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