CN215763456U

CN215763456U - One-way valve

Info

Publication number: CN215763456U
Application number: CN202121891960.3U
Authority: CN
Inventors: 王珊; 陈英杰; 路超; 王红利; 陈志鹏; 王余贤; 张艳辉; 赵文亮; 陈世浩; 刘建军
Original assignee: Henan Aerospace Hydraulic and Pneumatic Technology Co Ltd
Current assignee: Henan Aerospace Hydraulic and Pneumatic Technology Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-02-08
Anticipated expiration: 2031-08-13

Abstract

The utility model discloses a one-way valve, which solves the problems that the one-way valve in the prior art is easy to flow backwards and is not easy to connect with a system. The oil-saving valve comprises a valve body, wherein an oil inlet connector is detachably arranged at the liquid inlet end of the valve body, an oil outlet connector is detachably arranged at the liquid outlet end of the valve body, a valve core assembly is arranged in the valve body, and a sealing element is arranged between the valve body and the oil outlet connector and/or the oil inlet connector. According to the utility model, the one-way valve can be directly connected with a system through the arrangement of the oil inlet joint and the oil outlet joint, and the disassembly and the assembly are convenient; the inner taper angles of the oil outlet joint and the oil inlet joint can be processed into different angles, so that the requirements of different equipment joints in different sizes are met. The valve core is matched with the valve body, so that when the valve core is used as a common joint, working media can be prevented from flowing back into a system, the backflow prevention effect is effectively achieved, and the use safety is improved.

Description

One-way valve

Technical Field

The utility model relates to the technical field of fluid transmission, in particular to a one-way valve.

Background

In conventional hydraulic systems, the function of the check valve is to allow the working medium to flow in only one direction, not in the opposite direction. However, because of the structure of the check valve, it is relatively cumbersome to connect the check valve to the system using an intermediate adapter, and therefore, users often want the check valve to be directly connected to the system without using an intermediate adapter. With conventional hydraulic system joints, which function only as a connection, system users often want to prevent working medium from flowing backwards into the system if the working medium can cause damage to the system.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a one-way valve, which solves the problems that the one-way valve in the prior art is easy to flow backwards and is not easy to be connected with a system.

The technical scheme of the utility model is realized as follows: the check valve comprises a valve body, wherein an oil inlet connector is detachably arranged at the liquid inlet end of the valve body, an oil outlet connector is detachably arranged at the liquid outlet end of the valve body, a valve element assembly is arranged in the valve body, and a sealing element is arranged between the valve body and the oil outlet connector and/or the oil inlet connector.

The valve core assembly comprises a valve core and a pressure spring, an installation cavity is arranged in the valve body, the valve core and the pressure spring are both located in the installation cavity, the valve core is matched with the conical surface of the valve body, one end of the pressure spring is pressed on the valve core, and the other end of the pressure spring is pressed on a plugging cap arranged on the valve body.

The valve core comprises a frustum part and a hollow cylinder part which are integrally formed, at least one rectangular groove flow channel is arranged on the hollow cylinder part along the circumferential direction, and a middle flow channel is arranged on the top of the hollow cylinder part along the axial direction. The blocking cap is detachably connected with the valve body, and a through hole flow passage is formed in the middle of the blocking cap.

And an annular groove is formed in a connecting area corresponding to the valve body and the oil outlet joint, and a sealing element is arranged in the annular groove. The seal includes a retainer ring and an O-ring.

And the oil inlet end of the oil inlet joint and the oil outlet end of the oil outlet joint are both provided with inner conical angles. The oil outlet joint, the valve body and the oil inlet joint are coaxially arranged.

According to the utility model, the one-way valve can be directly connected with a system through the arrangement of the oil inlet joint and the oil outlet joint, and the disassembly and the assembly are convenient; the inner taper angles of the oil outlet joint and the oil inlet joint can be processed into different angles, so that the requirements of different equipment joints in different sizes are met. The cooperation of case and valve body makes it when connecting as ordinary, can prevent that working medium from flowing backward into the system, effectively plays the effect of preventing flowing backward, improves the safety in utilization, prolongs the life of valve, has higher spreading value and practical value.

Drawings

In order to illustrate the embodiments of the utility model more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the valve core structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1, embodiment 1 is a check valve, which includes a valve body 2, an oil inlet joint 3 is detachably disposed at a liquid inlet end of the valve body 2, an oil outlet joint 1 is detachably disposed at a liquid outlet end of the valve body 2, and preferably, the oil inlet joint 3 and the oil outlet joint are connected to the valve body through threads. Through the setting of oil inlet joint 3 and oil-out joint 1, make check valve can directly be connected with system, easy dismounting. The valve body 2 is internally provided with a valve core assembly, and the valve core assembly is matched with the valve body, so that the liquid medium can be effectively prevented from flowing backwards. And a sealing element is arranged between the valve body 2 and the oil outlet joint 1 and/or the oil inlet joint 3, so that the integral sealing property of the one-way valve is improved.

Further, the case subassembly includes case 6 and pressure spring 7, be equipped with installation cavity 9 in the valve body 2, case 6 and pressure spring 7 all are located installation cavity 9, case 6 and the conical surface cooperation of valve body 2 improve the leakproofness, and the one end of pressure spring 7 compresses tightly on case 6, and the other end compresses tightly on the stifled cap 8 of setting on valve body 2, and stifled cap can be valve body threaded connection and be located the installation cavity, is equipped with the runner that supplies fluid medium to pass through on the stifled cap.

Specifically, when working medium enters the valve body through a flow channel of the oil inlet connector, the valve core is pushed open by overcoming the spring force of the pressure spring, the oil inlet is communicated with the oil outlet, and the working medium flows out through the oil outlet. When working medium flows in from the oil outlet, the valve core presses the valve body under the action of working medium pressure and pressure spring force, the valve port is closed, the working medium is prevented from flowing into the flow channel, the backflow prevention effect is effectively achieved, the use safety is improved, and the service life of the valve is prolonged.

As shown in fig. 2, in embodiment 2, the check valve includes a valve core 6, which includes a cone portion 6-1 and a hollow cylinder portion 6-2, the cone portion 6-1 is in conical fit with the valve body, the hollow cylinder portion 6-2 is circumferentially provided with at least one rectangular channel flow channel 6-3, in this embodiment, the hollow cylinder portion is a rectangular cylinder, and rectangular channel flow channels are provided on four sides of the rectangular cylinder. The top of the hollow cylinder part 6-2 is provided with a middle flow passage 6-4 along the axial direction. The blocking cap 8 is detachably connected with the valve body 2, and a through hole flow passage is formed in the middle of the blocking cap 8. The through hole runner is communicated with the installation cavity. When the valve is opened, the liquid medium enters the rectangular groove flow channel through the gap between the frustum part and the valve body, then enters the installation cavity through the middle flow channel 6-4 in a large amount, and then flows out through the through hole flow channel on the plugging cap. By the aid of the design, the sealing reliability of the valve body and the valve core is improved, and meanwhile, the backflow prevention effect is effectively achieved.

Further, the valve body 2 is equipped with the annular 10 with the corresponding joining region of oil-out joint 1, is equipped with the sealing member in the annular 10, in this embodiment the sealing member includes retaining ring 4 and O type circle 5. And the check ring 4 and the O-shaped ring 5 are positioned in the annular groove and used for sealing the valve body and the oil outlet joint.

Further, the oil inlet end of the oil inlet joint 3 and the oil outlet end of the oil outlet joint 1 are both provided with an inner conical angle 11. The oil inlet joint and the oil outlet joint can enable the one-way valve to be directly connected to the equipment, an intermediate connecting device is avoided being used, the inner taper angles of the oil inlet joint and the oil outlet joint can be processed into different angles, and the requirements of different equipment joint sizes are met. In an optimal installation mode, the oil outlet connector 1, the valve body 2 and the oil inlet connector 3 are coaxially arranged, and corresponding flow passages are communicated, so that smooth flowing of internal media is ensured.

The other structure is the same as embodiment 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A non-return valve comprising a valve body (2), characterized in that: the liquid inlet end of the valve body (2) is detachably provided with an oil inlet connector (3), the liquid outlet end of the valve body (2) is detachably provided with an oil outlet connector (1), a valve core assembly is arranged in the valve body (2), and a sealing element is arranged between the valve body (2) and the oil outlet connector (1) and/or the oil inlet connector (3).

2. The one-way valve of claim 1, wherein: the valve core assembly comprises a valve core (6) and a pressure spring (7), a mounting cavity (9) is formed in the valve body (2), the valve core (6) and the pressure spring (7) are both located in the mounting cavity (9), the valve core (6) is matched with the conical surface of the valve body (2), one end of the pressure spring (7) is pressed on the valve core (6), and the other end of the pressure spring is pressed on a blocking cap (8) arranged on the valve body (2).

3. The one-way valve of claim 2, wherein: the valve core (6) comprises a cone part (6-1) and a hollow cylinder part (6-2) which are integrally formed, at least one rectangular groove runner (6-3) is arranged on the hollow cylinder part (6-2) along the circumferential direction, and a middle runner (6-4) is arranged on the top of the hollow cylinder part (6-2) along the axial direction.

4. The one-way valve of claim 3, wherein: the blocking cap (8) is detachably connected with the valve body (2), and a through hole flow passage is formed in the middle of the blocking cap (8).

5. The check valve according to any one of claims 1 to 4, wherein: and a ring groove (10) is arranged in a connecting area of the valve body (2) corresponding to the oil outlet joint (1), and a sealing element is arranged in the ring groove (10).

6. The one-way valve of claim 5, wherein: the sealing element comprises a retainer ring (4) and an O-shaped ring (5).

7. The check valve according to any one of claims 1 to 4, 6, wherein: and the oil inlet end of the oil inlet joint (3) and the oil outlet end of the oil outlet joint (1) are both provided with an inner conical angle (11).

8. The one-way valve of claim 7, wherein: the oil outlet joint (1), the valve body (2) and the oil inlet joint (3) are coaxially arranged.