CN219570968U

CN219570968U - Swing check valve

Info

Publication number: CN219570968U
Application number: CN202320527740.5U
Authority: CN
Inventors: 叶豪
Original assignee: Tianjin Crd Self Control Valve Co ltd
Current assignee: Tianjin Crd Self Control Valve Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-08-22
Anticipated expiration: 2033-03-17

Abstract

The utility model discloses a swing check valve, which comprises a valve body, wherein a liquid inlet pipe penetrates through the left side of the outer diameter of the valve body and is fixedly connected with the left side of the outer diameter of the valve body, a sealing gasket is arranged at the right end of the liquid inlet pipe, an upper pipeline penetrates through the top of the outer diameter of the valve body and is fixedly connected with the left side of the inner diameter of the upper pipeline, a second fixing block is fixedly connected with the left side of the bottom of the inner diameter of the upper pipeline, two fixing rings are fixedly connected with the right side of the second fixing block, the inner diameter of each fixing ring penetrates through and is fixedly connected with a rotating shaft, a damping bearing is rotationally connected to the center position of the outer diameter of the rotating shaft, a valve rod is fixedly connected to the bottom of the outer diameter of the damping bearing, and a valve clack is fixedly connected to the left side of the outer wall of the valve rod. According to the utility model, when a medium enters from the liquid inlet pipe, the valve clack rotates due to impact force, one end of the valve rod is contacted with the buffer cushion, the impact force can be relieved due to the acting force of the spring and the buffer cushion, and when the use is stopped, the valve clack rotates downwards again, so that the resistance is increased by the damping bearing.

Description

Swing check valve

Technical Field

The utility model relates to the field of check valves, in particular to a swing check valve.

Background

In the process of pipeline use, swing check valves are widely used for blocking pipeline media, the swing check valves are also called one-way valves or check valves, the function of the swing check valves is to prevent media in pipelines from flowing backwards, opening and closing parts are automatically opened or closed by media flow and force so as to prevent the valves of the media from flowing backwards, the check valves belong to automatic valves and are mainly used on pipelines in which the media flow unidirectionally, and only the media are allowed to flow in one direction so as to prevent accidents.

At present, a swing check valve is needed to be used in the pipeline use process to conduct dielectric barrier operation on the pipeline, so that pipeline dielectric backflow is facilitated, but when the existing swing check valve is used, dielectric flows and is overturned by impact force, and during the process, the valve clack and the valve rod can collide with the valve seat and are deformed, so that normal use of the swing check valve is affected.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a swing check valve.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a swing check valve, includes the valve body, valve body external diameter left side runs through and fixedly connected with feed liquor pipe, the feed liquor pipe right-hand member is provided with sealed the pad, valve body external diameter top runs through and fixedly connected with goes up the pipeline, go up pipeline internal diameter bottom left side fixedly connected with second fixed block, two solid fixed rings of second fixed block right side fixedly connected with, gu fixed ring internal diameter runs through and fixedly connected with pivot, pivot external diameter central point puts department rotation connection has damping bearing, damping bearing external diameter bottom fixedly connected with valve rod, valve rod external wall left side fixedly connected with valve clack, go up pipeline internal diameter bottom and lean on right side fixedly connected with first fixed block, first fixed block bottom central point puts department fixedly connected with spacing ring, spacing ring bottom runs through and fixedly connected with spring, go up pipeline external diameter top fixedly connected with lower valve gap, lower valve gap top is provided with the valve gap, lower valve gap and last valve gap top run through and are provided with evenly distributed's screw hole.

As a further description of the above technical solution:

the outer diameter of the valve body penetrates through and is fixedly connected with a liquid outlet pipe, and the right end of the liquid outlet pipe is provided with a first flange.

As a further description of the above technical solution:

the left end of the liquid inlet pipe is provided with a second flange.

As a further description of the above technical solution:

the valve clack is tightly attached to the sealing gasket.

As a further description of the above technical solution:

threaded rod is run through and threaded connection in the screw hole internal diameter, threaded rod external diameter runs through and threaded connection has the nut.

As a further description of the above technical solution:

and the bottom of the spring is fixedly connected with a buffer cushion.

As a further description of the above technical solution:

the valve rod corresponds to the buffer cushion in position.

The utility model has the following beneficial effects:

according to the utility model, when a medium enters from the liquid inlet pipe, the valve clack rotates due to impact force, one end of the valve rod is contacted with the buffer cushion, the impact force can be slowed down due to the acting force of the spring and the buffer cushion, when the valve clack stops using, the valve clack rotates downwards again, the damping bearing increases resistance, so that the valve clack slowly descends when rotating, and the sealing cushion is made of rubber material, thereby reducing deformation caused by impact.

Drawings

FIG. 1 is a cross-sectional view of a swing check valve according to the present utility model;

FIG. 2 is a perspective view of a swing check valve according to the present utility model;

FIG. 3 is a cross-sectional view of a swing check valve according to the present utility model.

Legend description:

1. a liquid inlet pipe; 2. a valve flap; 3. a valve body; 4. a liquid outlet pipe; 5. a first flange; 6. a cushion pad; 7. a spring; 8. a limiting ring; 9. a first fixed block; 10. an upper pipeline; 11. a fixing ring; 12. a rotating shaft; 13. damping bearings; 14. a second flange; 15. an upper valve cover; 16. a threaded hole; 17. a threaded rod; 18. a screw cap; 19. a lower valve cover; 20. a sealing gasket; 21. a valve stem; 22. and a second fixed block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-3, one embodiment provided by the present utility model is: a swing check valve comprises a valve body 3, a liquid inlet pipe 1 is penetrated and fixedly connected to the left side of the outer diameter of the valve body 3, water flows into the valve body from the liquid inlet pipe 1, a valve clack 2 is impacted, the valve clack 2 is opened by the rotation of the water flow, the water flow is conveyed, a sealing gasket 20 is arranged at the right end of the liquid inlet pipe 1, an upper pipeline 10 is penetrated and fixedly connected to the top of the outer diameter of the valve body 3, when the swing check valve stops in use, the valve clack 2 can rotate and fall due to no impact force, the resistance is increased due to the action of the valve body 3, the valve clack 2 is slowly closed, the impact force is slowed down while the sealing gasket 20 is acted, a second fixing block 22 is fixedly connected to the left side of the bottom of the inner diameter of the upper pipeline 10, two fixing rings 11 are fixedly connected to the right side of the second fixing block 22, the fixed ring 11 internal diameter runs through and fixedly connected with pivot 12, pivot 12 external diameter central point puts department and rotates and be connected with damping bearing 13, damping bearing 13 external diameter bottom fixedly connected with valve rod 21, when valve rod 21 runs through blotter 6 because of the impact force, because of the effect of blotter 6 and spring 7, buffer force has been reduced, valve rod 21 outer wall left side fixedly connected with valve clack 2, go up pipeline 10 internal diameter bottom and lean on upper right side fixedly connected with first fixed block 9, first fixed block 9 bottom central point puts department fixedly connected with spacing ring 8, spacing ring 8 bottom runs through and fixedly connected with spring 7, go up pipeline 10 external diameter top fixedly connected with lower valve gap 19, lower valve gap 19 top is provided with upper valve gap 15, lower valve gap 19 runs through and is provided with evenly distributed's screw hole 16 with upper valve gap 15 top.

The outer diameter of the valve body 3 penetrates through and is fixedly connected with the liquid outlet pipe 4, the first flange 5 is arranged at the right end of the liquid outlet pipe 4, the second flange 14 is arranged at the left end of the liquid inlet pipe 1, the second flange 14 and the first flange 5 can be connected in a pipeline manner, the upper valve cover 15 can be opened by screwing the screw cap 18, the valve clack 2 and the sealing gasket 20 are tightly attached, the inner diameter of the threaded hole 16 penetrates through and is in threaded connection with the threaded rod 17, the outer diameter of the threaded rod 17 penetrates through and is in threaded connection with the screw cap 18, the cushion 6 is fixedly connected to the bottom of the spring 7, and the valve rod 21 corresponds to the cushion 6 in position.

Working principle: when the swing check valve is used, water flows into the swing check valve from the liquid inlet pipe 1, the valve clack 2 is impacted, the check valve is opened due to the rotation of the water flow, the water flow is conveyed, when the valve rod 21 is impacted by impact force to the buffer cushion 6, the buffer force is reduced due to the action of the buffer cushion 6 and the spring 7, when the swing check valve is stopped, the valve clack 2 is rotated to fall due to the lack of the impact force, the resistance is increased due to the action of the valve body 3, the valve clack 2 is slowly closed, the sealing gasket 20 is added, the impact force is slowed down when the sealing is achieved, the second flange 14 and the first flange 5 can be connected through pipelines, and the upper valve cover 15 can be opened by screwing the nut 18.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a swing check valve, includes valve body (3), its characterized in that: valve body (3) external diameter left side runs through and fixedly connected with feed liquor pipe (1), feed liquor pipe (1) right-hand member is provided with sealed pad (20), valve body (3) external diameter top runs through and fixedly connected with goes up pipeline (10), go up pipeline (10) internal diameter bottom left side fixedly connected with second fixed block (22), second fixed block (22) right side fixedly connected with two solid fixed ring (11), gu fixed ring (11) internal diameter runs through and fixedly connected with pivot (12), pivot (12) external diameter central point department rotation is connected with damping bearing (13), damping bearing (13) external diameter bottom fixedly connected with valve rod (21), valve rod (21) external wall left side fixedly connected with valve clack (2), go up pipeline (10) internal diameter bottom off-top right side fixedly connected with first fixed block (9), first fixed block (9) bottom central point department fixedly connected with spacing ring (8) bottom runs through and fixedly connected with spring (7), go up pipeline (10) internal diameter central point department rotation is connected with damping bearing (19), valve gap (19) are gone up on top (19), evenly distributed and valve gap (15) are provided with under valve gap (16).

2. A swing check valve according to claim 1, wherein: the outer diameter of the valve body (3) penetrates through and is fixedly connected with a liquid outlet pipe (4), and a first flange (5) is arranged at the right end of the liquid outlet pipe (4).

3. A swing check valve according to claim 1, wherein: the left end of the liquid inlet pipe (1) is provided with a second flange (14).

4. A swing check valve according to claim 1, wherein: the valve clack (2) is tightly attached to the sealing gasket (20).

5. A swing check valve according to claim 1, wherein: the inner diameter of the threaded hole (16) penetrates through and is in threaded connection with a threaded rod (17), and the outer diameter of the threaded rod (17) penetrates through and is in threaded connection with a nut (18).

6. A swing check valve according to claim 1, wherein: the bottom of the spring (7) is fixedly connected with a buffer cushion (6).

7. A swing check valve according to claim 1, wherein: the valve rod (21) corresponds to the position of the cushion pad (6).