Double flap check valve

Abstract

Double flap check valve, including valve body, be equipped with valve seat on the valve body, the valve body is equipped with support inside, support is connected with double valve flap structure, double valve flap structure includes left valve flap and right valve flap, left valve flap and right valve flap are hinged on the support, left valve flap and right valve flap are equipped with torsion spring between support, the valve body is equipped with disc spring elastic component on the outside of valve seat, left valve flap and right valve flap are elastically matched with disc spring elastic component, through the disc spring elastic element of being arranged in the valve seat circle outer side, disc spring elastic element free state is higher than valve seat, when medium force promotes valve flap to close, first contact disc spring, under the action of disc spring, valve flap closing speed reduces, reduces the impact noise that valve flap impacts valve seat produces, when valve needs to open, disc spring can offset part of the action of valve flap back torsion spring, so that the valve opens in low pressure working condition. When the valve opens, because the valve flap of double flap check valve is 2, the disc spring is fixed on the upper and lower ends of the valve flap, to prevent the disc spring from being separated from the medium scour.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a double-disc check valve. Background Technology

[0002] In the operation of existing check valves, when the medium force pushes the valve disc to close, the valve disc will hit the valve seat, generating impact noise. This not only affects the application scenarios of the check valve, but also affects its service life. Summary of the Invention

[0003] In order to overcome the technical defects of the existing technology, this utility model provides a double-disc check valve.

[0004] The technical solution adopted by this utility model is: a double-disc check valve, including a valve body, a valve seat on the valve body, a bracket inside the valve body, a double-disc structure connected to the bracket, the double-disc structure including a left valve disc and a right valve disc, the left valve disc and the right valve disc being hinged to the bracket respectively, a torsion spring being provided between the left valve disc and the right valve disc and the bracket, and a disc spring elastic component being provided on the valve body outside the valve seat, the left valve disc and the right valve disc being elastically engaged with the disc spring elastic component.

[0005] An installation groove is formed between the valve seat and the valve body, and the disc spring elastic component is placed in the installation groove.

[0006] The height of the disc spring elastic component is higher than that of the valve seat. When the valve needs to be opened, the disc spring elastic component can offset part of the force of the torsion spring on the back of the valve disc, so that the valve can be opened under low pressure conditions.

[0007] The dual valve disc structure is provided with a sealing surface, and the sealing surface is sealed to the valve seat.

[0008] The limiting fit between the sealing surface and the disc spring elastic component enables the disc spring to be fixed when the valve is closed, preventing the disc spring from detaching due to the flow of the medium.

[0009] The bracket is provided with a hinge shaft, and the left valve disc and the right valve disc are respectively hinged to the hinge shaft of the bracket.

[0010] The beneficial effects of this utility model are as follows: This utility model provides a double-disc check valve, including a valve body, a valve seat on the valve body, a bracket inside the valve body, and a double-disc structure connected to the bracket. The double-disc structure includes a left valve disc and a right valve disc, which are respectively hinged to the bracket. A torsion spring is also provided between the left and right valve discs and the bracket. A disc spring elastic component is also provided on the valve body outside the valve seat. The left and right valve discs are elastically engaged with the disc spring elastic component. Through the disc spring elastic element set on the outer edge of the valve seat ring, the disc spring elastic element is higher than the valve seat in its free state. When the medium force pushes the valve disc to close, it first contacts the disc spring. Under the action of the disc spring, the valve disc closing speed is reduced, reducing the impact noise generated by the valve disc hitting the valve seat. When the valve needs to be opened, the disc spring can offset part of the action force of the torsion spring on the back of the valve disc, so that the valve can be opened under low pressure conditions. When the valve is opened, since the double-disc check valve has two discs, the upper and lower ends of the discs fix the disc spring to prevent it from detaching as the medium washes over it. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Among them, 1-valve body, 2-valve seat, 3-bracket, 4-left valve disc, 5-right valve disc, 6-torsion spring, 7-disc spring elastic assembly, 11-mounting groove. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] A double-disc check valve includes a valve body 1 with a valve seat 2. The valve body 1 is characterized by a bracket 3 within the valve body 1, on which a double-disc structure is connected. The double-disc structure includes a left valve disc 4 and a right valve disc 5, which are respectively hinged to the bracket 3. The bracket 3 has a hinge shaft, and the left and right valve discs 4 and 5 are respectively hinged to the hinge shaft. A torsion spring 6 is provided between the left and right valve discs 4 and 5 and the bracket 3. A disc spring elastic component 7 is also provided on the valve body 1 outside the valve seat 2, and the left and right valve discs 4 and 5 are elastically engaged with the disc spring elastic component 7. A mounting groove 11 is formed between the valve seat 2 and the valve body 1, and the disc spring elastic component 7 is placed within the mounting groove 11. The height of the disc spring elastic component 7 is higher than that of the valve seat 2, and a limiting fit between the sealing surface and the disc spring elastic component 7 secures the disc spring. When the valve needs to be opened, the disc spring elastic component 7 can offset part of the force of the torsion spring 6 on the back of the valve disc, allowing the valve to open under low pressure conditions. When the valve is opened, since the double-disc check valve has two valve discs, the upper and lower ends of the valve discs fix the disc springs, preventing the disc springs from dislodging due to the flow of the medium.

[0015] The dual valve disc structure is provided with a sealing surface, and the sealing surface is sealed to the valve seat 2.

[0016] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the inventive concept of this utility model is not limited to this utility model. Any modification that utilizes the inventive concept will be included within the scope of patent protection of this patent.

[0017] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A double-disc check valve, comprising a valve body (1), wherein a valve seat (2) is provided on the valve body (1), characterized in that, The valve body (1) is also provided with a bracket (3), and a double valve structure is connected to the bracket (3). The double valve structure includes a left valve (4) and a right valve (5). The left valve (4) and the right valve (5) are respectively hinged to the bracket (3). A torsion spring (6) is also provided between the left valve (4) and the right valve (5) and the bracket (3). A disc spring elastic component (7) is also provided on the valve body (1) outside the valve seat (2). The left valve (4) and the right valve (5) are elastically engaged with the disc spring elastic component (7).

2. The double-disc check valve according to claim 1, characterized in that, An installation groove (11) is formed between the valve seat (2) and the valve body (1), and the disc spring elastic component (7) is placed in the installation groove (11).

3. The double-disc check valve according to claim 1, characterized in that, The height of the disc spring elastic component (7) is higher than that of the valve seat (2). When the valve needs to be opened, the disc spring elastic component (7) can offset part of the force of the valve disc back torsion spring (6), so that the valve can be opened under low pressure conditions.

4. The double-disc check valve according to claim 1, characterized in that, The dual valve structure is provided with a sealing surface, and the sealing surface is sealed to the valve seat (2).

5. The double-disc check valve according to claim 4, characterized in that, The sealing surface and the disc spring elastic component (7) are matched to fix the disc spring and prevent the disc spring from being detached by the medium.

6. The double-disc check valve according to claim 1, characterized in that, The bracket (3) is provided with a hinge shaft, and the left valve (4) and right valve (5) are respectively hinged on the hinge shaft of the bracket (3).

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