Butt-clip check valve

Abstract

The wafer check valve comprises a valve body, a rotating groove and a valve clack, the rotating groove is formed in the valve body and provided with an opening, the valve clack is provided with a valve shaft assembly, the valve shaft assembly is provided with a first position and a second position, and the valve shaft assembly can be switched between the first position and the second position in a deformation mode. When the valve shaft assembly is located at the first position or the second position, the valve shaft assembly is rotationally fixed in the rotating groove. The utility model has the following advantages and effects: the installation is convenient and fast, and the production cost is low, so that the market competitiveness of the product is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve, in particular to a pair of clamping check valve. BACKGROUND

[0002] The pair of clamping check valve is also called backflow valve, check valve, back pressure valve and one-way valve. The valve is automatically opened and closed by the force generated by the medium flowing in the pipeline, and belongs to an automatic valve.

[0003] The existing pair of clamping check valve comprises a valve body, a valve clapper, a valve shaft integrally arranged on the valve clapper and having two ends, a rotating groove arranged on the valve body and corresponding to the two ends of the valve shaft, and a limiting assembly for limiting the valve shaft from being separated from the rotating groove. The rotating groove structure has an opening along the radial direction of the valve shaft, so that the valve shaft is installed into the rotating groove through the opening, and then is fixed by the two sets of limiting assemblies arranged in cooperation. Although this kind of setting structure facilitates the machining of the rotating groove, it also increases the production cost of the product on the two sets of limiting assemblies arranged. The setting method makes the overall production cost of the product still high, which reduces the market competitiveness of the product to a certain extent. SUMMARY

[0004] The utility model aims at providing a pair of clamping check valve, which is convenient to install and low in production cost, so as to improve the market competitiveness of the product.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a pair of clamping check valve, comprising a valve body, a rotating groove arranged on the valve body and having an opening, and a valve clapper, wherein the valve clapper is provided with a valve shaft assembly, the valve shaft assembly has a first position and a second position and can be deformed and switched between the first position and the second position, and the valve shaft assembly is rotationally fixed in the rotating groove when the valve shaft assembly is in the first position or the second position.

[0006] By adopting the above technical scheme, the valve shaft assembly in the first position or the second position is installed and fixed in the rotating groove through the deformation and switching function of the valve shaft assembly, so as to realize the rotation and installation operation of the valve clapper on the valve body. This kind of installation method is convenient and reduces the use amount of parts, so as to reduce the production cost and improve the market competitiveness of the product.

[0007] Further, the rotating grooves are symmetrically and spaced apart from each other, and the openings of the two rotating grooves are opposite to each other and correspond to each other.

[0008] By adopting the above technical scheme, this kind of setting structure can well limit the valve shaft assembly from being separated from the rotating groove on the basis of realizing stable rotation cooperation, is convenient to machine, and has lower machining cost.

[0009] Further, the valve shaft assembly comprises a first shaft segment, a second shaft segment coaxially arranged with the first shaft segment, and an elastic member driving the first shaft segment and the second shaft segment to move in opposite directions.

[0010] By adopting the above technical scheme, the elastic member is arranged to enable the first shaft segment and the second shaft segment to perform telescopic movement along the axial lines thereof, so as to change the distance between the opposite ends of the first shaft segment and the second shaft segment, thereby being installed into the two rotating grooves and forming the rotation limiting.

[0011] Further, the valve disc is provided with a mounting hole for mounting the valve shaft assembly, the first shaft segment, the second shaft segment and the elastic member are all mounted in the mounting hole, and the elastic member is located between the first shaft segment and the second shaft segment, when the valve shaft assembly is fixed in the rotating groove, the first shaft segment and the second shaft segment are both synchronously located in the mounting hole and the rotating groove.

[0012] By adopting the above technical scheme, the mounting hole is arranged to realize convenient assembly of the valve shaft assembly and the valve disc, and the first shaft segment and the second shaft segment are both arranged to be synchronously located in the mounting hole and the rotating groove, thereby forming the rotation limiting with the rotating groove, which is simple in structure and low in production cost.

[0013] Further, the valve body is provided with a flow hole, the side of the valve body facing the valve disc is provided with a sealing ring surrounding the outer circle of the flow hole, the sealing ring is arranged to seal and slide along the axial line of the flow hole, and an elastic buffer is arranged between the valve body and the sealing ring.

[0014] By adopting the above technical scheme, the sealing ring is arranged to improve the sealing performance of the check valve, and the elastic buffer is arranged to buffer the falling valve disc, thereby avoiding impact wear and impact noise, and also buffering the falling valve disc.

[0015] Further, the valve body is provided with a mounting groove for mounting the sealing ring, the side of the sealing ring opposite to the valve disc is provided with a supporting ring, and the elastic buffer is arranged in the mounting groove and located on the side of the supporting ring opposite to the sealing ring.

[0016] By adopting the above technical scheme, the supporting ring is arranged to provide stable supporting force for the sealing ring, thereby ensuring the sealing stability of the sealing ring.

[0017] Further, the side of the sealing ring facing the valve disc is an outwardly convex arc-shaped surface.

[0018] By adopting the above technical scheme, the arc-shaped surface is arranged to enable the sealing position of the sealing ring to better abut against the rotation path of the valve disc, thereby forming more stable sealing.

[0019] In summary, the utility model has the following beneficial effects: the utility model is convenient to install and low in production cost, thereby improving market competitiveness of products. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Structure schematic view of an embodiment;

[0021] Figure 2 Sectional view of an embodiment;

[0022] Figure 3 Sectional view of an embodiment from another perspective;

[0023] Figure 4 For Figure 3 Enlarged view of A part of the embodiment.

[0024] In the figure: 1, valve body; 2, opening; 3, rotating groove; 4, valve flap; 5, valve shaft assembly; 51, first shaft section; 52, second shaft section; 53, elastic member; 6, mounting hole; 7, flow hole; 8, sealing ring; 9, elastic buffer; 10, mounting groove; 11, support ring; 12, arc surface. DETAILED DESCRIPTION

[0025] The utility model will be further described in detail below in combination with the drawings.

[0026] Reference Figures 1 to 4 A clamping check valve, comprising a valve body 1, rotating grooves 3 with openings 2 provided in the valve body 1, and a valve flap 4. The valve flap 4 is provided with a valve shaft assembly 5, which has a first position and a second position and can be deformed and switched between the first position and the second position. When the valve shaft assembly 5 is in the first position or the second position, the valve shaft assembly 5 is rotationally fixed in the rotating grooves 3. The rotating grooves 3 are symmetrically and spacedly arranged in two, and the openings 2 of the two rotating grooves 3 are oppositely and correspondingly arranged.

[0027] The valve shaft assembly 5 comprises a first shaft section 51, a second shaft section 52 coaxially arranged with the first shaft section 51, and an elastic member 53 for driving the first shaft section 51 and the second shaft section 52 to move in opposite directions. The valve flap 4 is provided with a mounting hole 6 for mounting the valve shaft assembly 5, and the first shaft section 51, the second shaft section 52 and the elastic member 53 are all mounted in the mounting hole 6, with the elastic member 53 located between the first shaft section 51 and the second shaft section 52. When the valve shaft assembly 5 is fixed in the rotating grooves 3, the first shaft section 51 and the second shaft section 52 are both synchronously located in the mounting hole 6 and the rotating grooves 3, and the elastic member 53 is a spring.

[0028] The valve body 1 is provided with a flow hole 7, and a sealing ring 8 is arranged around the outer circle of the flow hole 7 on the side of the valve body 1 facing the valve disc 4; the valve body 1 is provided with an installation groove 10 for installing the sealing ring 8; the sealing ring 8 is arranged in the installation groove 10 along the axis of the flow hole 7 and is provided with an elastic buffer 9 in the installation groove 10. The sealing ring 8 is fixedly provided with a supporting ring 11 on the side opposite to the valve disc 4; the elastic buffer 9 is located on the side of the supporting ring 11 opposite to the sealing ring 8, and the elastic buffer 9 is a spring; one end of the elastic buffer 9 is fixedly connected with the supporting ring 11, and the other end is fixedly connected with the bottom of the installation groove 10. The side of the sealing ring 8 facing the valve disc 4 is an outwardly convex arc surface 12.

[0029] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. A wafer check valve, comprising a valve body (1), a rotating groove (3) disposed in the valve body (1) and having an opening (2), and a valve disc (4), characterized in that: The valve disc (4) is provided with a valve shaft assembly (5), which has a first position and a second position and can be deformed and switched between the first position and the second position. When the valve shaft assembly (5) is in the first position or the second position, the valve shaft assembly (5) is rotated and fixed in the rotating groove (3).

2. The wafer check valve according to claim 1, characterized in that: The rotating slots (3) are symmetrical and spaced two at a time, with the openings (2) of the two rotating slots (3) facing each other and corresponding to each other.

3. The wafer check valve according to claim 2, characterized in that: The valve shaft assembly (5) includes a first shaft segment (51), a second shaft segment (52) coaxially arranged with the first shaft segment (51), and an elastic element (53) that drives the first shaft segment (51) and the second shaft segment (52) to move in opposite directions.

4. The wafer check valve according to claim 3, characterized in that: The valve disc (4) is provided with a mounting hole (6) for installing the valve shaft assembly (5). The first shaft segment (51), the second shaft segment (52) and the elastic element (53) are all installed in the mounting hole (6) and the elastic element (53) is located between the first shaft segment (51) and the second shaft segment (52). When the valve shaft assembly (5) is fixed in the rotating groove (3), the first shaft segment (51) and the second shaft segment (52) are simultaneously located in the mounting hole (6) and the rotating groove (3).

5. The wafer check valve according to claim 1, characterized in that: A flow hole (7) is formed on the valve body (1). A sealing ring (8) is provided on the side of the valve body (1) facing the valve disc (4) and surrounds the outer ring of the flow hole (7). The sealing ring (8) is slidably disposed on the valve body (1) along the axis of the flow hole (7) and an elastic buffer (9) is provided between the valve body (1) and the sealing ring (8).

6. The wafer check valve according to claim 5, characterized in that: The valve body (1) has an installation groove (10) for installing the sealing ring (8). The sealing ring (8) is provided with a support ring (11) on the side opposite to the valve disc (4). The elastic buffer (9) is disposed in the installation groove (10) and located on the side opposite to the sealing ring (8) of the support ring (11).

7. The wafer check valve according to claim 5, characterized in that: The sealing ring (8) facing the valve disc (4) has an outwardly convex arc-shaped surface (12).

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