CN220452805U

CN220452805U - Two-way check valve

Info

Publication number: CN220452805U
Application number: CN202321876626.XU
Authority: CN
Inventors: 陈继业
Original assignee: Zhejiang Liye Valve Co ltd
Current assignee: Zhejiang Liye Valve Co ltd
Priority date: 2023-07-17
Filing date: 2023-07-17
Publication date: 2024-02-06
Anticipated expiration: 2033-07-17

Abstract

The utility model relates to a bidirectional check valve, which comprises a pipe body, wherein the pipe body comprises a joint section and an amplifying section formed by amplifying the inner diameter section of the joint section, the joint section is used for connecting an external pipeline, and the joint section is symmetrically arranged at two ends of the amplifying section along the axial direction of the pipe body; the non-return assembly is connected in the amplifying section and comprises a mounting base cylinder and a non-return plug which is arranged on the mounting base cylinder and corresponds to the joint section; the non-return plug comprises a base and a plug head which can be relatively and movably connected to the base along the axis of the pipe body, an elastic piece is arranged between the plug head and the base and is used for forming acting force for driving the plug head to face one side of the base, and one end of the plug head is provided with a joint section for blocking the corresponding plug head; and the adjusting assembly is connected to the pipe body and is used for adjusting the spacing size between the non-return plug and the corresponding joint section. The utility model has two check plugs, and the reversing check effect is realized by adjusting the positions of the check plugs.

Description

Two-way check valve

Technical Field

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

Background

The valve is a control component in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, splitting flow or overflow pressure relief and the like, is used for the fluid control system, and can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like from the simplest stopping valve to various valves used in a very complex automatic control system. The valves are also classified into cast iron valves, cast steel valves, stainless steel valves, chrome molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard custom valves, etc. according to the materials. At present, many plastic valves cannot realize the function of bidirectional check when being applied to check valves, but can only realize unidirectional check, and cannot realize check when the fluid flow direction is changed.

Disclosure of Invention

In view of the shortcomings of the prior art, one of the purposes of the present utility model is to provide a bi-directional check valve that still has a check effect after adapting to a change in fluid flow direction.

The utility model aims at realizing the following technical scheme: the bidirectional check valve comprises a pipe body, wherein the pipe body comprises a joint section and an amplifying section formed by amplifying the inner diameter section of the joint section, the joint section is used for being connected with an external pipeline, and the joint section is symmetrically arranged at two ends of the amplifying section along the axial direction of the pipe body; the non-return assembly is connected in the amplifying section and comprises a mounting base cylinder and a non-return plug which is arranged on the mounting base cylinder and corresponds to the joint section; the non-return plug comprises a base and a plug head which can be relatively and movably connected to the base along the axis of the pipe body, the elastic piece is arranged between the plug head and the base and is used for forming acting force for driving the plug head to face one side of the base, one end of the plug head is provided with a blocking surface for blocking the corresponding joint section, and the other end of the plug head is connected with the elastic piece and is a driving surface; the adjusting component is connected to the pipe body and is used for adjusting the interval size between the non-return plug and the corresponding joint section, the non-return plugs are respectively provided with non-return positions for blocking the corresponding joint sections and avoiding positions for avoiding fluid to ensure that the fluid passes, and the adjusting component is used for adjusting the non-return plugs to switch between the non-return positions and the avoiding positions.

The present utility model may be further configured in a preferred example to: the adjusting assembly comprises an adjusting rod which is rotatably arranged on the amplifying section, a handle piece which is connected with the end part of the adjusting rod, and a steering piece which is used for steering the rotation of the adjusting rod to drive the non-return plug to move along the axis of the pipe body; one end of the adjusting rod penetrates through the non-return assembly, and the opposite end of the adjusting rod is positioned outside the pipe body and connected with the handle piece; the steering part comprises a first bevel gear connected to one end of the adjusting rod positioned at one end of the pipe body, a second bevel gear connected to the mounting base barrel and a telescopic rod penetrating through the second bevel gear, the second bevel gear is meshed with the first bevel gear, and the second bevel gear is connected in the mounting base barrel in a relative rotation manner; the telescopic rod is coaxially arranged on the second bevel gear in a penetrating mode, the telescopic rod is in threaded fit with the second bevel gear, a piece is arranged between the telescopic rod and the installation base barrel, and the anti-rotation piece is used for restraining the adjusting rod to rotate.

The present utility model may be further configured in a preferred example to: the mounting base cylinder is provided with a containing groove corresponding to the end part of the non-return plug, and the containing groove can contain the non-return plug when the non-return plug moves towards the mounting base cylinder.

The present utility model may be further configured in a preferred example to: each non-return stopper all set up in adjusting part, every adjusting part mutually independent sets up.

The present utility model may be further configured in a preferred example to: the plug is arc-shaped towards the plugging surface of the corresponding joint section, an interface used for being in plug-in fit with the plug is arranged at one end of the joint section connected with the amplifying section, and the cross section of the interface is arc-shaped which gradually becomes larger from one side close to the amplifying section.

The present utility model may be further configured in a preferred example to: a flexible cushion layer is arranged on one side of the plug head, which faces the corresponding interface section.

The present utility model may be further configured in a preferred example to: the elastic piece comprises an axial compression spring connected between the plug and the base, and two ends of the axial compression spring are respectively abutted between two opposite sides of the base and the plug.

The present utility model may be further configured in a preferred example to: a guide rod is arranged between the base and the plug head.

The present utility model may be further configured in a preferred example to: the outer side wall of the end part of the joint section is provided with external threads.

The present utility model may be further configured in a preferred example to: the plug is towards one side of the base is connected with a connecting rod, and one end of the connecting rod, which is away from the plug, is embedded into the base and is connected with the base in a sliding manner.

In summary, the present utility model includes at least one of the following beneficial technical effects: the enlarged section of the tube body is adapted to receive a check assembly and the connector section is adapted to connect to an external conduit for fluid flow through the bi-directional check valve of the present application. The two ends of the non-return assembly are provided with non-return valves corresponding to the two joint sections and the flow direction of the fluid, one of the non-return valves is positioned at a non-return position, and the other non-return valve is positioned at an avoiding position. When the fluid flows reversely, the positions of the two check valves are switched by the adjusting component, so that the check effect of the bidirectional check valve is ensured. The plug head of the non-return plug at the non-return position moves towards the corresponding joint section until abutting under the driving of the corresponding elastic piece, thereby isolating the amplifying section from the joint section and playing a non-return role. And a gap for fluid to flow through is reserved between the non-return plug at the avoiding position and the corresponding joint section under the action of the corresponding elastic piece, so that the fluid flow is ensured.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present application.

In the figure, 1, a pipe body; 2. an amplifying section; 3. a joint section; 4. installing a base cylinder; 5. a non-return plug; 6. an elastic member; 7. an adjustment assembly; 8. a receiving groove; 9. a meshing groove; 10. a cover plate; 11. an adjusting rod; 12. a handle member; 13. a first bevel gear; 14. a second bevel gear; 15. a telescopic rod; 16. an anti-rotation block; 17. an anti-rotation groove; 18. an axial compression spring; 19. a connecting rod; 20. a plug head; 21. a base; 22. installing a baffle; 23. a guide rod.

Detailed Description

The present utility model will be described in further detail with reference to fig. 1.

Referring to fig. 1, the present application provides a bi-directional check valve comprising a tube 1, a check assembly, and an adjustment assembly 7.

The pipe body 1 comprises a joint section 3 positioned at the end part of the pipe body 1 and used for being connected with an external pipeline, and an amplifying section 2 positioned at the axial middle part of the pipe body 1, wherein the joint section 3 is symmetrically arranged at two ends of the amplifying section 2. The inner diameter dimension of the enlarged section 2 is larger than the inner diameter dimension of the joint section 3.

The non-return assembly comprises a mounting base cylinder 4 and a non-return plug 5 which are arranged in the amplifying section 2. The non-return stopper 5 is provided with two corresponding two amplifying sections 2, and the non-return stopper 5 includes base 21, chock plug 20 and connects the elastic component 6 between non-return stopper 5 and base 21, and elastic component 6 is used for forming the effort that drives corresponding chock plug 20 to move towards joint section 3 one side, and chock plug 20 one end has the shutoff face that is used for shutoff corresponding joint section 3, and the other end of chock plug 20 is used for being connected and is the driving surface with elastic component 6.

The adjusting components 7 are connected to the pipe body 1 and are provided with two corresponding two non-return plugs 5, the two adjusting components 7 are mutually independent, and the adjusting components 7 are used for adjusting the spacing size between the non-return components and the corresponding joint sections 3.

The check plugs 5 are respectively provided with check positions for plugging the corresponding joint sections 3 and avoiding positions for avoiding fluid and ensuring the passing of the fluid, and the adjusting assemblies 7 are used for adjusting the switching of the check assemblies between the check positions and the avoiding positions.

The two ends of the non-return assembly are provided with non-return plugs 5, and the distance between the non-return plugs 5 and the corresponding joint sections 3 is adjusted through the adjusting assembly 7, so that the non-return plugs 5 are switched between a non-return position and an avoiding position. One of the two check plugs 5 is in a check position and the other is in an avoidance position, so that one end of the fluid in the storage body 1 is ensured to realize the check function.

When the flow direction of the fluid is changed, the positions of the two non-return plugs 5 are switched through the adjusting assembly 7, the non-return positions are switched to the avoiding positions, and the non-return positions are switched to the non-return positions, so that the non-return effect is still ensured under the condition that the flow direction is changed, and the probability of backflow after the fluid pressure is reduced.

The end of the joint section 3 of the pipe body 1 connected with the amplifying section 2 is in a bucket shape with the section gradually enlarged. The plugging surface of the plug 20 is semicircular correspondingly, and when the plug 20 is abutted against the joint section 3, the plugging surface of the plug 20 is semicircular to plug the joint section 3. The plugging surface is semicircular, so that the acting force of the fluid on the plug head 20 can be effectively reduced, and the flow speed of the fluid is ensured.

In order to reduce the direct collision of the plug 20 when the plug is abutted against the joint section 3 under the driving of the elastic piece 6, a flexible cushion layer (not shown in the figure) is arranged on the plugging surface side of the plug 20, and the cushion layer is matched with the plugging surface to form a convex semicircle. The coating of teflon material is coated on one side of the cushion layer, which is away from the plug 20, and has better wear resistance, corrosion resistance and sliding performance, so that the occurrence of poor non-return effect caused by damage of the plug 20 due to collision is reduced, the service life of the plug 20 is prolonged, and the energy-saving effect is achieved.

External threads are formed on the outer side walls of the two opposite ends of the two joint sections 3, and the external threads are used for connecting a pipeline to access fluid.

The installation base cylinder 4 is coaxially arranged in the amplifying section 2, and the installation base cylinder 4 is fixedly connected with the inner wall of the amplifying section 2 through supporting feet. The end of the mounting base cylinder 4 facing the non-return plug 5 is provided with an accommodating groove 8, and the accommodating groove 8 is used for accommodating the non-return plug 5 when being positioned at the avoiding position.

The non-return plug 5 is at least partially located in the accommodating groove 8, and when the non-return plug 5 located at one end of the installation base cylinder 4 performs non-return action, the non-return plug 5 at the other end is retracted in the accommodating groove 8 to avoid fluid, so that the normal passing of the fluid is ensured.

The two opposite ends of the two containing grooves 8 are also provided with engaging grooves 9, and the engaging grooves 9 and the non-return grooves are sealed by cover plates 10.

The adjusting assembly 7 comprises an adjusting rod 11 which is rotatably arranged on the amplifying section 2, a handle piece 12 which is connected with the end part of the adjusting rod 11, and a steering piece which is used for steering the rotation of the adjusting rod 11 to drive the non-return plug 5 to move along the axis of the pipe body 1.

One end of the adjusting rod 11 is arranged in the non-return assembly in a penetrating way and extends into the meshing groove 9, and the opposite end is positioned outside the pipe body 1 and fixedly connected with the handle piece 12.

The steering member comprises a first bevel gear 13, a second bevel gear 14 rotatably connected to the cover plate 10, and a telescopic rod 15 penetrating through the second bevel gear 14.

The first bevel gear 13 is fixedly connected to one end of the adjusting rod 11 located in the engagement groove 9 and rotates together with the adjusting rod 11.

The second bevel gear 14 meshes with the first bevel gear 13.

The telescopic rod 15 is coaxially arranged on the second bevel gear 14 and the cover plate 10 in a penetrating mode and is fixedly connected with the installation base barrel 4 of the check plug 5, the telescopic rod 15 is in threaded fit with the second bevel gear 14, an anti-rotation block 16 is formed on the outer side of one end of the telescopic rod 15, which is located in the meshing groove 9, in a protruding mode, the meshing groove 9 is provided with an anti-rotation groove 17 which is arranged parallel to the pipe section axis and corresponds to the anti-rotation block 16, and the anti-rotation groove 17 is in clearance fit with the anti-rotation block 16. The anti-rotation block 16 and the anti-rotation groove 17 form an anti-rotation member. In other embodiments, the anti-rotation groove 17 may be formed on the telescopic rod 15, and the anti-rotation block 16 may be disposed on the groove wall of the engagement groove 9, so as to also restrict the telescopic rod 15 from rotating.

The adjusting rod 11 rotates, so that the first bevel gear 13 and the second bevel gear 14 rotate together, the rotation of the telescopic rod 15 is restrained by the anti-rotation block 16 and the anti-rotation groove 17, and the second bevel gear 14 drives the telescopic rod 15 to translate along the axis of the parallel pipe section, so that the adjustment of the interval between the non-return plug 5 and the joint section 3 is realized.

The elastic member 6 includes a connecting rod 19 telescopically connected between a base 21 and a plug 20, and an axial compression spring 18.

One end of the connecting rod 19 is fixedly connected to one side of the plug 20 facing the installation base cylinder 4, the opposite other end is embedded in the base 21, the base 21 is provided with a movable groove corresponding to the connecting rod 19, and the movable groove is parallel to the axis of the pipe body 1.

On the base 21, a mounting baffle 22 is mounted on the side of the movable slot facing the plug 20, which limits the detachment of the connecting rod 19 from the base 21.

The two ends of the axial compression spring 18 are respectively abutted against two opposite sides of the base 21 and the plug 20, and in this application, the axial compression spring 18 is coaxially sleeved on the connecting rod 19.

The axial compression spring 18 forms a force which drives the plug 20 away from the base 21 in order to achieve that the plugging surface of the plug 20 faces the corresponding joint segment 3.

In other embodiments, a guide rod 23 is further connected between the plug 20 and the mounting base cylinder 4, and the guide rod 23 is spaced and arranged around the side of the axial compression spring 18, so that the inclination of the plug 20 is reduced, and the stability of the plug 20 is improved.

In summary, when the flow direction of the fluid is changed, the handle member 12 is adjusted to change the check direction of the check plug 5, and the check plug 5 is flexibly adjusted to ensure the check effect on the fluid.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The bidirectional check valve is characterized by comprising a pipe body (1), wherein the pipe body (1) comprises a joint section (3) and an amplifying section (2) formed by amplifying the inner diameter section of the joint section (3), the joint section (3) is used for being connected with an external pipeline, and the joint section (3) is symmetrically arranged at two ends of the amplifying section (2) along the axial direction of the pipe body (1);

the non-return assembly is connected in the amplifying section (2) and comprises a mounting base cylinder (4) and a non-return plug (5) which is arranged on the mounting base cylinder (4) and corresponds to the joint section (3); along the axis of the pipe body (1), the non-return plug (5) comprises a base (21) and a plug head (20) which can be relatively and movably connected to the base (21), an elastic piece (6) is further arranged between the plug head (20) and the base (21), the elastic piece (6) is used for forming acting force for driving the plug head (20) to one side of the base (21), one end of the plug head (20) is provided with a plugging surface for plugging the corresponding joint section (3), and the other end of the plug head (20) is used for being connected with the elastic piece (6) and is a driving surface;

the adjusting component (7) is connected to the pipe body (1), the adjusting component (7) is used for adjusting the interval size between the non-return plug (5) and the corresponding joint section (3), the non-return plugs (5) are respectively provided with non-return positions for plugging the corresponding joint section (3) and avoiding positions for avoiding fluid to ensure fluid passing, and the adjusting component (7) is used for adjusting the non-return plugs (5) to switch between the non-return positions and the avoiding positions.

2. The bi-directional check valve of claim 1 wherein: the adjusting assembly (7) comprises an adjusting rod (11) which is rotatably arranged on the amplifying section (2), a handle piece (12) connected with the end part of the adjusting rod (11), and a steering piece which is used for steering the rotation of the adjusting rod (11) to drive the non-return plug (5) to move along the axis of the pipe body (1); one end of the adjusting rod (11) is arranged in the non-return assembly in a penetrating way, and the opposite end is positioned outside the pipe body (1) and connected with the handle piece (12); the steering part comprises a first bevel gear (13) connected to an adjusting rod (11) and positioned at one end of the pipe body (1), a second bevel gear (14) connected to the installation base barrel (4) and a telescopic rod (15) penetrating through the second bevel gear (14), the second bevel gear (14) is meshed with the first bevel gear (13), and the second bevel gear (14) is connected in the installation base barrel (4) in a relative rotation mode; the telescopic rod (15) is coaxially arranged on the second bevel gear (14) in a penetrating mode, the telescopic rod (15) is in threaded fit with the second bevel gear (14), an anti-rotation piece is arranged between the telescopic rod (15) and the installation base cylinder (4), and the anti-rotation piece is used for restraining the adjusting rod (11) to rotate.

3. The bi-directional check valve of claim 1 wherein: the end part of the installation base cylinder (4) corresponding to the non-return plug (5) is provided with a containing groove (8), and the containing groove (8) can contain the non-return plug (5) when the non-return plug (5) moves towards the installation base cylinder (4).

4. The bi-directional check valve of claim 1 wherein: each non-return plug (5) is arranged on the adjusting component (7), and each adjusting component (7) is arranged independently.

5. The bi-directional check valve of claim 1 wherein: the plug head (20) faces the plugging surface of the corresponding joint section (3) to form an arc shape, one end, connected with the amplifying section (2), of the joint section (3) is provided with an interface used for being in plug-in fit with the plug head (20), and the cross section of the interface is gradually enlarged from one side close to the amplifying section (2).

6. The bi-directional check valve of claim 5 wherein: a flexible cushion layer is arranged on one side of the plug head (20) facing the corresponding interface section.

7. The bi-directional check valve of claim 1 wherein: the elastic piece (6) comprises an axial compression spring (18) connected between the plug head (20) and the base (21), and two ends of the axial compression spring (18) are respectively abutted between two opposite sides of the base (21) and the plug head (20).

8. The bi-directional check valve of claim 1 wherein: a guide rod (23) is arranged between the base (21) and the plug head (20).

9. The bi-directional check valve of claim 1 wherein: the outer side wall of the end part of the joint section (3) is provided with external threads.

10. The bi-directional check valve of claim 1 wherein: one side of the plug head (20) facing the base (21) is connected with a connecting rod (19), and one end of the connecting rod (19) deviating from the plug head (20) is embedded and connected in the base (21) in a sliding mode.