Valve clack and check valve

Abstract

The utility model belongs to the technical field of valves, and discloses a valve clack and a check valve. The valve clack comprises a base plate layer and a sealing layer, the base plate layer comprises a hinge rod, a connecting part and a plate body which are integrally formed, the two ends of the connecting part are connected with the hinge rod and the plate body respectively, and the sealing layer is integrally formed on one side of the plate body; the base plate layer can be formed through one-time punch forming, the manufacturing process of the valve clack can be simplified, the production efficiency of the valve clack can be improved, the manufacturing cost of the valve clack can be reduced, in addition, due to the fact that the sealing layer is integrally formed on the base plate layer, an assembly gap between the base plate layer and the sealing layer is avoided, and the sealing performance of the valve clack is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve flap and a check valve. Background Art

[0002] The swing check valve is the most commonly used check valve, primarily controlling the flow direction of the medium by rotating the valve disc around a hinge axis. However, existing swing check valves are assembled from multiple components, resulting in a complex overall structure, cumbersome manufacturing steps, low production efficiency, and high manufacturing costs.

[0003] Therefore, there is an urgent need for a valve flap and a check valve to solve the above problems. Utility Model Content

[0004] One purpose of the utility model is to provide a valve flap, which simplifies the production process and assembly process of the valve flap, improves the production efficiency of the valve flap, and saves manufacturing costs.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The valve flap comprises:

[0007] a base plate layer, the base plate layer comprising an integrally formed hinge rod, a connecting portion, and a plate body, wherein two ends of the connecting portion are respectively connected to the hinge rod and the plate body;

[0008] A sealing layer is integrally formed on one side of the plate body.

[0009] Optionally, the substrate layer is in the shape of a straight plate and is formed by stamping a blank steel plate.

[0010] Optionally, the sealing layer is a plastic layer, and the plastic layer and the substrate layer are integrally vulcanized.

[0011] Optionally, the hinged rod is a circular hinged rod.

[0012] Optionally, both ends of the hinge rod are provided with chamfered structures.

[0013] Optionally, the diameter of the hinge rod is a, the thickness of the connecting portion is b, the thickness of the plate body is c, and a≤b=c.

[0014] Optionally, the sealing layer covers the plate body.

[0015] Another object of the present invention is to provide a check valve, which improves the production efficiency of the check valve and saves the manufacturing cost of the check valve.

[0016] A check valve comprising the above-mentioned valve disc.

[0017] Optionally, the check valve also includes a valve body, which includes a valve cavity and a liquid inlet joint and a liquid outlet joint respectively located at both ends of the valve cavity, and a sealing surface is formed at the inner end of the liquid inlet joint, and the top to the bottom end of the sealing surface gradually moves away from the liquid inlet joint, and the valve flap is rotatably suspended on the inner wall of the valve cavity and can fit with the sealing surface.

[0018] Beneficial effects:

[0019] The valve flap provided by the present invention includes a substrate layer and a sealing layer. The substrate layer includes an integrally formed hinge rod, a connecting portion and a plate body. The two ends of the connecting portion are respectively connected to the hinge rod and the plate body, and the sealing layer is integrally formed on one side of the plate body. The substrate layer can be stamped and formed in one step, which can simplify the manufacturing process of the valve flap, improve the production efficiency of the valve flap, and reduce the manufacturing cost of the valve flap. Moreover, since the sealing layer is integrally formed on the substrate layer, an assembly gap between the substrate layer and the sealing layer is avoided, thereby ensuring the sealing of the valve flap.

[0020] The check valve provided by the utility model includes the valve disc mentioned above, which improves the production efficiency of the check valve and saves the manufacturing cost of the check valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the valve disc provided by the present invention from a first viewing angle;

[0022] Figure 2 This is a schematic structural diagram of the valve disc provided by the present invention at a second viewing angle;

[0023] Figure 3 It is a cross-sectional view of the check valve provided by the utility model.

[0024] In the picture:

[0025] 100, valve disc; 110, substrate layer; 111, hinged rod; 112, connecting portion; 113, plate body; 120, sealing layer;

[0026] 200, valve body; 210, valve chamber; 220, liquid inlet connector; 221, sealing surface; 230, liquid outlet connector. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0028] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0031] This embodiment provides a valve flap, such as Figure 1-Figure 2 As shown, the valve flap 100 includes a substrate layer 110 and a sealing layer 120. The substrate layer 110 includes an integrally formed hinge rod 111, a connecting portion 112, and a plate body 113. The ends of the connecting portion 112 are respectively connected to the hinge rod 111 and the plate body 113. The sealing layer 120 is integrally formed on one side of the plate body 113. The substrate layer 110 can be stamped and formed in a single step, which can simplify the manufacturing process of the valve flap 100, improve the production efficiency of the valve flap 100, and reduce the manufacturing cost of the valve flap 100. In addition, because the sealing layer 120 is integrally formed on the substrate layer 110, an assembly gap between the substrate layer 110 and the sealing layer 120 is avoided, thereby ensuring the sealing performance of the valve flap 100.

[0032] Alternatively, as Figure 2 As shown, the substrate layer 110 is in a straight plate shape and is formed by stamping a blank steel plate. The stamped substrate layer 110 can achieve high-precision size control and shape consistency, which can improve the processing efficiency of the substrate layer 110.

[0033] Optionally, the sealing layer 120 is a plastic layer, and the plastic layer and the substrate layer 110 are integrally vulcanized. The integrally vulcanized plastic layer can ensure perfect bonding between the plastic layer and the substrate layer 110 without assembly gaps, thereby ensuring good consistency of the valve flap 100 and excellent sealing effect.

[0034] Optionally, the hinge rod 111 is a circular hinge rod 111 , which can reduce the rotation resistance of the valve flap 100 and improve the smoothness of opening and closing of the valve flap 100 .

[0035] Optionally, both ends of the hinged rod 111 are provided with chamfered structures to prevent sharp edges from scratching the valve body 200 of the check valve, ensuring that the opening and closing process of the valve flap 100 is smoother and effectively extending the service life of the valve flap 100.

[0036] Optionally, the diameter of the hinged rod 111 is a, the thickness of the connecting portion 112 is b, and the thickness of the plate 113 is c, where a ≤ b = c. This design effectively reduces the amount of material required for the hinged rod 111 while ensuring the structural strength of the valve flap 100, lowering production costs and improving economic efficiency. The diameter a of the hinged rod 111, the thickness b of the connecting portion 112, and the thickness c of the plate 113 can be set based on actual non-return and sealing requirements and are not specifically limited here.

[0037] Optionally, the sealing layer 120 covers the plate body 113 , which can increase the upper sealing layer 120 area of the valve flap 100 and effectively improve the sealing effect.

[0038] like Figure 3 As shown, this embodiment further provides a check valve, including the above-mentioned valve disc 100, which improves the production efficiency of the check valve and saves the manufacturing cost of the check valve.

[0039] Optionally, the check valve also includes a valve body 200, which includes a valve cavity 210 and a liquid inlet joint 220 and a liquid outlet joint 230 respectively located at both ends of the valve cavity 210. A sealing surface 221 is formed at the inner end of the liquid inlet joint 220, and the top to the bottom end of the sealing surface 221 gradually moves away from the liquid inlet joint 220. The valve flap 100 is rotatably suspended on the inner wall of the valve cavity 210 and can fit with the sealing surface 221; thus, when the medium flow rate is low or in a pressure-free state, the valve flap 100 naturally fits with the sealing surface 221 under the action of its own gravity to close the liquid inlet joint 220, thereby improving the sealing performance of the check valve and preventing the medium from flowing back.

[0040] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Valve disc, characterized in that, The valve flap comprises: A substrate layer (110), the substrate layer (110) comprising an integrally formed hinge rod (111), a connecting portion (112), and a plate body (113), wherein two ends of the connecting portion (112) are respectively connected to the hinge rod (111) and the plate body (113); A sealing layer (120), wherein the sealing layer (120) is integrally formed on one side of the plate body (113).

2. The valve flap according to claim 1, characterized in that The substrate layer (110) is in the shape of a straight plate.

3. The valve flap according to claim 1, characterized in that The sealing layer (120) is a plastic layer, and the plastic layer and the substrate layer (110) are integrally vulcanized.

4. The valve flap according to claim 1, characterized in that The hinge rod (111) is a circular hinge rod (111).

5. The valve flap according to claim 1, characterized in that Both ends of the hinge rod (111) are respectively provided with chamfered structures.

6. The valve flap according to claim 1, characterized in that The diameter of the hinge rod (111) is a, the thickness of the connecting portion (112) is b, the thickness of the plate body (113) is c, and a≤b=c.

7. The valve flap according to any one of claims 1 to 6, characterized in that: The sealing layer (120) covers the plate body (113).

8. Check valve, characterized in that, The valve disc comprises the valve disc according to any one of claims 1 to 7.

9. The check valve according to claim 8, characterized in that The check valve further comprises a valve body (200), the valve body (200) comprising a valve cavity (210) and a liquid inlet joint (220) and a liquid outlet joint (230) respectively located at two ends of the valve cavity (210), a sealing surface (221) being formed at the inner end of the liquid inlet joint (220), the top end to the bottom end of the sealing surface (221) gradually moving away from the liquid inlet joint (220), and the valve flap being rotatably suspended on the inner wall of the valve cavity (210) and being able to fit with the sealing surface (221).

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