CN210266026U

CN210266026U - Swing check valve

Info

Publication number: CN210266026U
Application number: CN201920849436.6U
Authority: CN
Inventors: 方赛泽; 方崇杰; 向承勤
Original assignee: Zhejiang Meizhongsi Valve Co Ltd
Current assignee: Zhejiang Meizhongsi Valve Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-04-07
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a swing check valve, relating to the technical field of check valves and comprising a valve body, a water inlet is arranged on one side of the valve body, a water outlet is arranged on the other side of the valve body, a limit pipe is arranged inside the valve body in a penetrating way, one side of the limiting pipe is movably connected with a non-return assembly, one side of the water outlet is fixedly provided with a sealing assembly, the top end of the valve body is fixedly provided with a top cover, and the inner part of the valve body is fixedly provided with the limit lug, the stepped groove on the non-return device of the utility model can be more closely attached with the valve clack under the pressure of the counter-flow water, and the spiral spring in the rotary disc can ensure that the check valve can quickly return to the original position when no water flows along the rotary disc, through having increased seal assembly and can guarantee under the sealed condition of check valve, carry out further sealed, also prevent that the water can flow backward and go back when the sealed effect of check valve is not good.

Description

Swing check valve

Technical Field

The utility model relates to a check valve technical field specifically is a swing check valve.

Background

The swing check valve is also called a check valve or a check valve and is used for preventing media in the pipeline from flowing backwards. The valve, in which the opening and closing member is automatically opened or closed by the flow and force of the medium to prevent the medium from flowing backwards, is called a check valve. The check valve belongs to the automatic valve class, is mainly used on the pipeline of medium one-way flow, only allows medium to flow to one direction to prevent the accident. The valve is generally horizontally installed in a pipeline, but the traditional swing check valve is easy to leak water after being used for a long time due to insufficient sealing degree, and the threaded connection mode is rather troublesome when being connected. Accordingly, one skilled in the art has provided a swing check valve to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a swing check valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a swing check valve, includes the valve body, the water inlet has been seted up to one side of valve body, the delivery port has been seted up to the opposite side of valve body, the inside of valve body is run through and is provided with spacing pipe, one side swing joint of spacing pipe has the non return subassembly, one side fixed mounting of delivery port has seal assembly, the top fixed mounting of valve body has the top cap, and the inside fixed mounting of valve body has spacing lug.

As a further aspect of the present invention: the non return subassembly includes spacing pipe, step groove, first sealed pad, valve clack, carousel and clockwork spring, the inside fixed mounting of carousel has the clockwork spring, and one side of carousel rotates and is connected with the valve clack, the inside of valve clack is provided with the step groove, and the inside sliding connection of valve clack has spacing pipe, the upper surface bonding in step groove has first sealed pad.

As a further aspect of the present invention: the utility model discloses a sealing assembly, including stopper, body, the sealed pad of second, bolt, the sealed pad of third, flange and the sealed pad of third, one side fixed mounting of body has the flange, and the swing joint of body has the sealed pad of third, the sealed upper surface bonding of pad of third has the sealed pad of second, the inside fixed mounting of body has the stopper, the front surface of flange runs through and is provided with the bolt, and the front surface bonding of flange has the sealed pad of third.

As a further aspect of the present invention: the number of the bolts is 9, and the bolts are made of stainless steel.

As a further aspect of the present invention: the carousel fixed mounting is in the inside of valve body, and the carousel is sealed setting.

As a further aspect of the present invention: the limiting pipe is an external threaded pipe and is made of stainless steel.

As a further aspect of the present invention: the step groove is matched with the limiting pipe, and the step groove is connected with the limiting pipe in a clamping mode.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a step groove on the non return subassembly can be under the pressure of water against the current inseparabler and valve clack laminating together to clockwork spring in the carousel can guarantee that the non return subassembly can be quick when not following water flow gets back to the normal position, can guarantee under the sealed condition of non return subassembly through having increased seal assembly, carries out further sealedly, also prevents that water can go back against the current when the sealed effect of non return subassembly is not good.

Drawings

FIG. 1 is a schematic view of a swing check valve;

FIG. 2 is a schematic view of a check stop-back assembly of the swing check valve;

FIG. 3 is a schematic view of a seal assembly in a swing check valve;

fig. 4 is a top view of a swing check valve.

In the figure: 1. a water inlet; 2. a limiting pipe; 3. a valve body; 4. a check assembly; 5. a limiting bump; 6. a water outlet; 7. A seal assembly; 8. a top cover; 9. a step groove; 10. a first gasket; 11. a valve flap; 12. a turntable; 13. a clockwork spring; 14. A limiting block; 15. a pipe body; 16. a second gasket; 17. a bolt; 18. a third gasket; 19. a flange; 20. a piston.

Detailed Description

Referring to fig. 1 to 4, in an embodiment of the present invention, a swing check valve includes a valve body 3, a water inlet 1 is disposed on one side of the valve body 3, a water outlet 6 is disposed on the other side of the valve body 3, a limiting pipe 2 is an external threaded pipe, and the limiting pipe 2 is made of stainless steel.

In fig. 1, 2 and 4: a limiting pipe 2 penetrates through the interior of the valve body 3, one side of the limiting pipe 2 is movably connected with a non-return assembly 4, the non-return assembly 4 comprises the limiting pipe 2, a step groove 9, a first sealing gasket 10, a valve clack 11, a rotating disc 12 and a clockwork spring 13, the clockwork spring 13 is fixedly arranged in the rotating disc 12, and one side of the rotary disc 12 is rotatably connected with a valve clack 11, a step groove 9 is arranged inside the valve clack 11, and the valve clack 11 is connected with a limit pipe 2 in a sliding way, the upper surface of the step groove 9 is bonded with a first sealing gasket 10, a rotary disc 12 is fixedly arranged in the valve body 3, and the rotary disc 12 is arranged in a sealing way, the step groove 9 is matched with the limit pipe 2, and the step groove 9 is connected with the limit pipe 2 in a clamping way, the step groove 9 on the non-return component 4 of the utility model can be more closely attached with the valve clack 11 under the pressure of the reverse flow water, and spring 13 in rotating disc 12 ensures that check assembly 4 will return quickly to its original position when there is no downstream flow.

One side of the water outlet 6 is fixedly provided with a sealing component 7, the sealing component 7 comprises a limiting block 14, a pipe body 15, a second sealing gasket 16, a bolt 17, a third sealing gasket 18 and a flange 19, one side of the pipe body 15 is fixedly provided with the flange 19, and the tube body 15 is movably connected with a third sealing gasket 18, the upper surface of the third sealing gasket 18 is bonded with a second sealing gasket 16, the inside of the tube body 15 is fixedly provided with a limit block 14, the front surface of a flange 19 is provided with a bolt 17 in a penetrating way, and a third packing 18 is adhered to the front surface of the flange 19, the number of bolts 17 is 9, the bolt 17 is made of stainless steel, the top end of the valve body 3 is fixedly provided with a top cover 8, the interior of the valve body 3 is fixedly provided with a limit lug 5, through having increased seal assembly 7 and can guaranteeing to carry out further sealed under check assembly 4's sealed condition, also prevent that check assembly 4 from sealing up the time water can come back against the current when the effect is not good.

The utility model discloses a theory of operation is: when the positive fluid medium stops flowing, the spring 13 rebounds due to no external force, and then drives the rotating disc 12 and the valve flap 11 to return to the original position, when the reverse fluid medium wants to flow back, the piston 20 is pushed forward first, at this time, the piston 20 is clamped in the clamping groove, the second sealing gasket 16 on the surface of the piston 20 is tightly attached to the clamping groove, if the piston 20 is incompletely sealed, the reverse fluid medium flows through the piston 20, when the reverse fluid medium flows to the position of the check valve assembly 4, due to the step groove 9 arranged inside the valve flap 11, the pressure of the reverse fluid medium can tightly clamp the valve flap 11 and the check valve 2 together, the bigger degree of dual seal has guaranteed the utility model provides a security and stability.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a swing check valve, includes valve body (3), its characterized in that, water inlet (1) have been seted up to one side of valve body (3), delivery port (6) have been seted up to the opposite side of valve body (3), the inside of valve body (3) is run through and is provided with spacing pipe (2), one side swing joint of spacing pipe (2) has non return subassembly (4), one side fixed mounting of delivery port (6) has seal assembly (7), the top fixed mounting of valve body (3) has top cap (8), and the inside fixed mounting of valve body (3) has spacing lug (5).

2. The swing check valve according to claim 1, wherein the check assembly (4) comprises a limiting pipe (2), a step groove (9), a first sealing gasket (10), a valve clack (11), a rotary disc (12) and a spring (13), the spring (13) is fixedly mounted inside the rotary disc (12), the valve clack (11) is rotatably connected to one side of the rotary disc (12), the step groove (9) is formed in the valve clack (11), the limiting pipe (2) is slidably connected to the inside of the valve clack (11), and the first sealing gasket (10) is bonded to the upper surface of the step groove (9).

3. The swing check valve according to claim 1, wherein the sealing assembly (7) comprises a limiting block (14), a pipe body (15), a second sealing gasket (16), a bolt (17), a third sealing gasket (18) and a flange (19), the flange (19) is fixedly mounted on one side of the pipe body (15), the third sealing gasket (18) is movably connected to the pipe body (15), the second sealing gasket (16) is bonded to the upper surface of the third sealing gasket (18), the limiting block (14) is fixedly mounted inside the pipe body (15), the bolt (17) penetrates through the front surface of the flange (19), and the third sealing gasket (18) is bonded to the front surface of the flange (19).

4. The swing check valve according to claim 3, wherein the number of the bolts (17) is 9, and the material of the bolts (17) is stainless steel.

5. A swing check valve according to claim 2, characterized in that the disc (12) is fixedly mounted inside the valve body (3) and the disc (12) is sealingly arranged.

6. The swing check valve according to claim 1, wherein the limiting tube (2) is an external threaded tube, and the limiting tube (2) is made of stainless steel.

7. The swing check valve according to claim 2, wherein the stepped groove (9) is adapted to the limiting pipe (2), and the stepped groove (9) is connected with the limiting pipe (2) in a clamping manner.