A pipe joint

Abstract

The present application relates to the technical field of pipeline connection, and discloses a pipeline joint, which comprises a first joint, a second joint and a valve for opening and closing a pipeline, the first joint is butted with the second joint, the valve is arranged in the first joint, the valve comprises a valve rod, a valve core and a handle, the valve rod is rotationally connected to the first joint, the valve core is fixedly connected with the valve rod and arranged in the first joint, one end of the handle is fixedly connected with the valve rod and arranged outside the first joint, the handle is provided with a protruding part, and when the handle drives the valve core to rotate to connect the pipelines at both ends of the joint, the protruding part is clamped in the second joint. The pipeline joint can prevent oil and oil gas remaining in the pipeline from leaking and polluting the environment, and also increases the butt interlocking of the first joint and the second joint, thereby improving safety.

Description

Technical Field

[0001] This invention relates to the technical field of pipe connections, and in particular to a pipe fitting. Background Technology

[0002] Quick couplings are typically installed at the ends of plastic or composite hoses for the rapid connection and disconnection of fluid transport pipelines, improving work efficiency. Quick couplings are widely used in the petrochemical industry.

[0003] Currently used quick couplings only provide a quick connection function. After unloading, residual oil and oil vapor remain in the pipeline. This residual oil and oil vapor will gradually evaporate and be released into the atmosphere, thus posing a problem of environmental pollution. In addition, quick couplings lack an interlocking function, and there is a possibility of accidental disconnection during operation, which may cause media leakage and environmental pollution. Summary of the Invention

[0004] The purpose of this invention is to provide a pipe joint that can reduce the leakage of residual oil and oil vapor in the pipe, prevent accidental disconnection, and avoid environmental pollution.

[0005] To achieve the above objectives, the present invention provides a pipe joint, including a first joint, a second joint, and a valve for switching on and off pipes. The first joint is connected to the second joint, and the valve is disposed on the first joint. The valve includes a valve stem, a valve core, and a handle. The valve stem is rotatably connected to the first joint, and the valve core is fixedly connected to the valve stem and disposed inside the first joint. The handle is fixedly connected to one end of the valve stem and disposed outside the first joint. The handle has a protrusion. When the handle drives the valve core to rotate to connect the pipes at both ends of the joint, the protrusion engages with the second joint.

[0006] As a preferred embodiment, the connection between the first connector and the valve stem is provided with a guide groove, and the handle is provided with a guide block, the guide block being slidably connected to the guide groove.

[0007] As a preferred embodiment, it also includes a locking member, which is rotatably connected to the handle. The first connector is provided with a first limiting groove, and the locking member is inserted into the first limiting groove to limit the first position of the handle.

[0008] As a preferred embodiment, the first position is the position of the handle when the protrusion is engaged with the second connector.

[0009] As a preferred embodiment, the first connector is provided with a second limiting groove, and the locking member is inserted into the second limiting groove to limit the second position of the handle.

[0010] As a preferred embodiment, the second position is the position when the handle is not in the first position.

[0011] As a preferred embodiment, the two ends of the elastic element are connected to the handle and the locking element, respectively.

[0012] As a preferred embodiment, the locking member includes a pressing part and a plugging part, with a connecting part between the pressing part and the plugging part. The connecting part is rotatably connected to the handle. The locking member is integrally formed, and the elastic element is disposed between the pressing part and the connecting part. The pressing part forms an angle with the handle, and the plugging part has an L-shaped orthographic projection.

[0013] As a preferred embodiment, the first connector is a female connector, and the first connector is provided with a first handle for engaging with the second connector. The second connector is a male connector, and the second connector is provided with a first snap-fit ​​groove recessed along its surface, and the protrusion snaps into the first snap-fit ​​groove.

[0014] As a preferred embodiment, the first connector is a male connector and the second connector is a female connector. The second connector is provided with a second handle for engaging with the first connector. The second connector is provided with a second snap-fit ​​groove recessed along its surface, and the protrusion snaps into the second snap-fit ​​groove.

[0015] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows:

[0016] In this embodiment of the pipe joint, during operation, the valve core is opened by the handle, connecting the pipes at both ends of the joint. The protrusion of the handle engages with the second connector, preventing accidental disconnection of the first and second connectors during operation, thus preventing media leakage and environmental pollution, and improving safety. After operation, the valve core is closed by the handle, effectively sealing any residual oil and oil vapor in the pipes after unloading, preventing environmental pollution. Furthermore, because the protrusion restricts the connection or disconnection of the first and second connectors when the valve core is open, it ensures that oil and oil vapor will not leak and pollute the environment when connecting or disconnecting the first and second connectors. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the female connector according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the frustum according to an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the connection structure in an embodiment of the present invention, where the first connector is a female connector;

[0020] Figure 4 This is a cross-sectional view of the connection structure of the first connector in an embodiment of the present invention, which is a male connector.

[0021] In the picture:

[0022] 1. First connector; 11. First handle; 12. Through hole; 13. Guide groove; 14. Frustum; 15. First limiting groove; 16. Second limiting groove; 2. Second connector; 21. First snap-fit ​​groove; 22. Second snap-fit ​​groove; 3. Valve; 31. Valve stem; 32. Valve core; 33. Handle; 331. Protrusion; 332. Guide block; 4. Locking element; 41. Pressing part; 42. Insertion part; 43. Connecting part; 5. Elastic element. Detailed Implementation

[0023] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0024] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The terms "first" and "second" used in this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be understood that the terms "connected," "linked," and "fixed," etc., used in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a welded connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] like Figure 1 , Figure 3 and Figure 4 As shown, a preferred embodiment of the present invention provides a pipe joint including a first joint 1, a second joint 2, and a valve 3 for switching the pipes on and off. The first joint 1 and the second joint 2 are connected. The valve 3 is located on the first joint 1 and includes a valve stem 31, a valve core 32, and a handle 33. The valve stem 31 is rotatably connected to the first joint 1. The valve core 32 is fixedly connected to the valve stem 31 and located inside the first joint 1. The handle 33 is fixedly connected to one end of the valve stem 31 and located outside the first joint 1. The handle 33 has a protrusion 331. When the handle 33 drives the valve core 32 to rotate to connect the pipes at both ends of the joint, the protrusion 331 engages with the second joint 2.

[0027] In the pipe joint of the present invention, during operation, the valve core 32 of the valve 3 is opened by the handle 33, connecting the pipes at both ends of the joint. The protrusion 331 of the handle 33 is engaged with the second joint 2, preventing accidental disconnection of the first joint 1 and the second joint 2 during operation, which could lead to media leakage, environmental pollution, and improve safety. After the operation is completed, the valve core 32 of the valve 3 is closed by the handle 33, which can fully seal the oil and oil vapor remaining in the pipe after oil discharge, preventing environmental pollution. In addition, since the protrusion 331 restricts the docking or disassembly of the first joint 1 and the second joint 2 when the valve core 32 is open, it can be ensured that oil and oil vapor will not leak and pollute the environment when docking or disassembling the first joint 1 and the second joint 2.

[0028] like Figure 3 As shown, in one embodiment, the first connector 1 is a female connector, and the first connector 1 is provided with a first handle 11 for mating with the second connector 2. The second connector 2 is a male connector, and the second connector 2 is provided with a first locking groove 21 recessed along its surface, and a protrusion 331 is engaged with the first locking groove 21. When the male and female connectors are mated, they are connected and fixed in the female connector by the friction between the arcuate convex surface of the first handle 11 and the arcuate concave surface of the first locking groove 21. In this embodiment, a through hole 12 is provided at the mating point of the first connector 1 and the second connector 2, and the protrusion 331 passes through the through hole 12 and is engaged with the first locking groove 21.

[0029] like Figure 4 As shown, in another embodiment, the first connector 1 is a male connector, and the second connector 2 is a female connector. The second connector 2 is provided with a second handle for mating with the first connector 1, and the second connector 2 is provided with a second snap-fit ​​groove 22 recessed along its surface, with a protrusion 331 snapping into the second snap-fit ​​groove 22. The mating method of the first connector 1 and the second connector 2 in this example is the same as that in the aforementioned embodiment. In this embodiment, the protrusion 331 snaps into the second snap-fit ​​groove 22.

[0030] Furthermore, such as Figure 2 As shown, a guide groove 13 is provided at the connection between the first connector 1 and the valve stem 31, and a guide block 332 is provided on the handle 33. The guide block 332 is slidably connected to the guide groove 13. Specifically, the connection between the first connector 1 and the valve stem 31 is a frustum 14. A guide groove 13 is recessed along the outer circumference of the frustum 14. The length of the guide groove 13 is 1 / 4 of the circumference of the frustum 14, which restricts the handle 33 to rotate within the length of the guide groove 13, that is, within a 90° range. The two ends of the guide groove 13 correspond to the fully open and closed positions of the valve core 32 to prevent excessive rotation angle, which would require multiple adjustments of the handle 33.

[0031] Furthermore, such as Figure 1 and Figure 2As shown, it also includes a locking member 4, which is rotatably connected to the handle 33. The first connector 1 is provided with a first limiting groove 15, and the locking member 4 is inserted into the first limiting groove 15 to limit the first position of the handle 33. Specifically, the first position is the position of the handle 33 when the protrusion 331 is engaged with the second connector 2. By inserting the locking member 4 into the first limiting groove 15, the position of the handle 33 is maintained, preventing the first connector 1 and the second connector 2 from loosening during operation, which would lead to leakage and environmental pollution. It also prevents the handle 33 from disengaging from the second connector 2 due to the force exerted by the medium on the valve core 32, thus changing the angle of the valve core 32 or closing the valve core 32 and affecting the flow of the medium. In addition, the locking member 4 is rotatably connected to the handle 33, making it easy to insert or disengage the locking member 4 from the first limiting groove 15.

[0032] Furthermore, such as Figure 1 and Figure 2 As shown, the first connector 1 is provided with a second limiting groove 16, and the locking member 4 is inserted into the second limiting groove 16 to limit the second position of the handle 33. Specifically, the second position is the position of the handle 33 when it is not in the first position, that is, when the valve core 32 is in the closed state. This prevents the valve core from being in the open state when connecting or disconnecting the first connector 1 and the second connector 2, which would cause oil and oil vapor to leak and pollute the environment.

[0033] Furthermore, such as Figure 3 and Figure 4 As shown, it also includes an elastic element 5, with its two ends connected to the handle 33 and the locking element 4, respectively. The elastic element 5 is a spring, which can be pressed to release the locking element 4 or insert it into the first limiting groove 15 or the second limiting groove 16 during use. When released, it is reset by the elastic element 5, without the need for manual adjustment.

[0034] Specifically, such as Figure 3 and Figure 4 As shown, the locking member 4 includes a pressing part 41 and a plugging part 42, with a connecting part 43 between the pressing part 41 and the plugging part 42. The connecting part 43 is rotatably connected to the handle 33. The locking member 4 is integrally formed, and an elastic member 5 is disposed between the pressing part 41 and the connecting part 43. The pressing part 41 and the handle 33 form an angle, and the plugging part 42 has an L-shaped orthographic projection. The first limiting groove 15 and the second limiting groove 16 are disposed on the frustum 14, and the locking member 4 is disposed on the side of the handle 33 near the frustum 14. By pressing the pressing part 41, the connecting part 43 is rotated, thereby disengaging the plug part 42 from the first limiting groove 15 or the second limiting groove 16. The handle 33 can then be rotated to open or close the valve core 32. After opening or closing the valve core 32, the pressing part 41 is released, and the locking part 4 is reset under the action of the elastic member 5. The plug part 42 is then inserted into the first limiting groove 15 or the second limiting groove 16 to fix the handle 33.

[0035] In summary, the embodiments of the present invention provide a pipe connector. During operation, the valve core is opened by the handle, connecting the pipes at both ends of the connector. The protrusion of the handle is engaged with the second connector, and the locking part is inserted into the first limiting groove to fix the handle position. This prevents accidental disconnection of the first and second connectors during operation, which could lead to media leakage and environmental pollution, thus improving safety. After operation, the valve core is closed by the handle, and the locking part is inserted into the second limiting groove to fix the handle position. This effectively seals off any residual oil and oil vapor in the pipe after unloading, preventing environmental pollution. Furthermore, because the protrusion restricts the connection or disconnection of the first and second connectors when the valve core is open, it ensures that oil and oil vapor will not leak and pollute the environment when connecting or disconnecting the first and second connectors.

[0036] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A pipe fitting, characterized in that: The device includes a first connector, a second connector, and a valve for switching on and off pipelines. The first connector is connected to the second connector. The valve is located at the first connector and includes a valve stem, a valve core, and a handle. The valve stem is rotatably connected to the first connector. The valve core is fixedly connected to the valve stem and located inside the first connector. The handle is fixedly connected to one end of the valve stem and located outside the first connector. The handle has a protrusion. When the handle drives the valve core to rotate to connect the pipelines at both ends of the connector, the protrusion engages with the second connector. The first connector is a female connector, and the first connector is provided with a first handle for docking with the second connector. The second connector is a male connector, and the second connector is provided with a first snap-fit ​​groove recessed along its surface. The protrusion snaps into the first snap-fit ​​groove. A through hole is provided at the mating point of the first connector and the second connector, and the protrusion passes through the through hole and is engaged with the first engaging groove.

2. The pipe joint according to claim 1, characterized in that: The first connector is provided with a guide groove at the connection between it and the valve stem, and the handle is provided with a guide block, which is slidably connected to the guide groove.

3. The pipe joint according to claim 1, characterized in that: It also includes a locking element, which is rotatably connected to the handle. The first connector is provided with a first limiting groove, and the locking element is inserted into the first limiting groove to limit the first position of the handle.

4. The pipe joint according to claim 3, characterized in that: The first position is the position of the handle when the protrusion is engaged with the second connector.

5. The pipe joint according to claim 3, characterized in that: The first connector is provided with a second limiting groove, and the locking member is inserted into the second limiting groove to limit the second position of the handle.

6. The pipe joint according to claim 5, characterized in that: The second position is the position when the handle is not in the first position.

7. The pipe joint according to claim 3, characterized in that: It also includes an elastic element, the two ends of which are connected to the handle and the locking element, respectively.

8. The pipe joint according to claim 7, characterized in that: The locking component includes a pressing part and a plugging part, with a connecting part between the pressing part and the plugging part. The connecting part is rotatably connected to the handle. The locking component is integrally formed. The elastic element is disposed between the pressing part and the connecting part. The pressing part and the handle form an angle. The plugging part has an L-shaped orthographic projection.

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