A unitary joint for connecting two pipes

Abstract

The utility model discloses a kind of whole joint connecting two pipes, including left pipe joint, right pipe joint and left pipe joint one end threaded screwing cooperation right pipe joint, and left pipe joint, right pipe joint are respectively integrally formed on the outer thread main hollow tube, outer thread auxiliary hollow tube of far end part, the one end integrally formed with flow guide disc of left pipe joint far from outer thread main hollow tube, and the center position of the flow guide disc inside is equipped with elastic check structure.The utility model makes left pipe joint be connected with upstream pipeline by outer thread main hollow tube, and right pipe joint is connected with upstream pipeline by outer thread auxiliary hollow tube connection, when removing upstream pipeline, downstream pipeline, the instant of left pipe joint, right pipe joint separation, elastic check structure in left pipe joint rapidly act and make left pipe joint, upstream pipeline automatic closure, to cut off the flow of medium flow.

Description

Technical Field

[0001] This utility model relates to the field of pipe fittings technology, specifically an integral joint for connecting two pipes. Background Technology

[0002] Pipe fittings are used to connect the ends of two pipes, ensuring the system's sealing, mechanical strength, and stability. These integral fittings have diverse structures, typically made of metal or plastic, and include a fitting body, seals, connecting ends, fastening devices, and protective sleeves. Their design aims to achieve good sealing performance and mechanical strength, ensuring that the pipeline does not loosen or leak during operation. The connection process generally includes several steps: preparation, fit testing, sealing treatment, fixing the connection, checking the seal, and implementing protective measures. In practice, it is necessary to ensure that the pipe ends are clean, the fit is tight, lubricants or sealants are used appropriately, suitable fastening devices are employed, and pressure tests are conducted to confirm the sealing effect. Currently, pipe fittings are in a normally open, conducting state whether connecting the ends of two pipes or not. The normally open state means that the medium will continue to flow in the upstream pipeline unless actively shut off. This continuous flow of medium can cause difficulties for personnel dismantling the pipeline. For safety, personnel must first close the main valve or isolation section on the upstream pipeline or take emergency measures before dismantling the pipeline. This series of operations increases the number of steps and is prone to operational errors or delays, especially in emergency situations where it may be impossible to disconnect the medium flow in time. Utility Model Content

[0003] The purpose of this utility model is to provide an integral joint for connecting two pipes. The left pipe joint is connected to the upstream pipe through an externally threaded main hollow pipe, while the right pipe joint is connected to the upstream pipe through an externally threaded auxiliary hollow pipe. When the upstream and downstream pipes are disconnected, the elastic check structure in the left pipe joint quickly acts and causes the left pipe joint and the upstream pipe to automatically close, thereby cutting off the flow of the medium and solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an integral connector for connecting two pipes, comprising a left pipe connector, a right pipe connector with a threaded screw fit at one end of the left pipe connector, and an externally threaded main hollow pipe and an externally threaded secondary hollow pipe integrally formed on the opposite ends of the left and right pipe connectors, respectively. A guide plate is integrally formed at the end of the left pipe connector away from the externally threaded main hollow pipe, and an elastic check valve structure is installed at the center of the guide plate. Guide ports are provided on both the front and rear sides of the guide plate. An annular hollow guide shell is integrally formed at one end of the internal part of the externally threaded secondary hollow pipe, and a push rod is fixed at the end of the annular hollow guide shell near the right pipe connector. The push rod is used to gradually move the elastic check valve structure away from the guide plate during the threaded connection process of the left and right pipe connectors.

[0005] Preferably, the elastic check structure includes a valve stem slidably installed at the center of the inside of the guide plate, a rear retainer plate integrally formed at one end of the valve stem surface, and an elastic element installed inside the left pipe joint on one side of the rear retainer plate. The rear retainer plate is located on the left side of the guide plate, and the rear retainer plate and the guide plate are inserted into each other.

[0006] Preferably, a front disc is fixed on the outer wall of the rear baffle away from the guide plate, and a gap is provided between the outer wall of the front disc and the inner wall of the left pipe joint.

[0007] Preferably, the elastic element is a helical spring fitted onto one end of the valve stem surface and a fan-shaped baffle integrally formed on the top wall of the left pipe joint, with one end of the helical spring abutting against one side of the outer wall of the front disc.

[0008] Preferably, a tapered tube is integrally formed on the inner wall of the external threaded hollow tube near the left pipe joint, and hollow grooves are provided on both the front and rear outer walls of the tapered tube. A shaft hole for insertion and mating with the valve stem is provided at the center of the inside of the tapered tube.

[0009] Preferably, the valve stem has a recessed hole at one end near the top rod, and the diameter of the recessed hole is equal to the outer diameter of the top rod.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This integral joint connecting two pipes allows the left pipe joint to be connected to the upstream pipe through the externally threaded main hollow pipe, while the right pipe joint is connected to the upstream pipe through the externally threaded auxiliary hollow pipe. When the upstream and downstream pipes are dismantled, the elastic check structure in the left pipe joint quickly acts upon separation of the left and right pipe joints, causing the left pipe joint and the upstream pipe to automatically close, thereby cutting off the flow of the medium. The elastic check structure automatically acts upon dismantling, immediately sealing the pipe opening, effectively preventing medium leakage and reducing the possibility of personnel being exposed to dangerous environments. This automatic response mechanism does not rely on manual operation and can respond to emergencies in the first instance. In traditional pipe maintenance, operators need to manually close valves or take other isolation measures, which is cumbersome and prone to errors. The automatic closing function of the elastic check structure means that when dismantling the upstream or downstream pipes, there is no need to wait or perform additional isolation operations. Only mechanical dismantling is required, and the system can automatically close, thereby saving a lot of pipe cutting time. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0013] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the present invention. Figure 1 ;

[0015] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the present invention. Figure 2 ;

[0016] Figure 6 This is a three-dimensional cross-sectional view of the left pipe connector of this utility model.

[0017] In the diagram: 1. Left pipe joint; 2. Right pipe joint; 3. Externally threaded hollow tube; 4. Guide plate; 401. Guide port; 5. Elastic check valve structure; 501. Valve stem; 502. Rear baffle; 503. Front disc; 504. Helical spring; 505. Fan-shaped baffle; 6. Annular hollow guide shell; 7. Top rod; 8. Externally threaded main hollow tube; 801. Tapered tube; 802. Hollowed-out groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-6 This utility model provides an embodiment of an integral connector for connecting two pipes, including a left pipe connector 1, a right pipe connector 2 with a threaded screw fit at one end of the left pipe connector 1, and an externally threaded main hollow pipe 8 and an externally threaded secondary hollow pipe 3 integrally formed on the opposite ends of the left pipe connector 1 and the right pipe connector 2, respectively. A guide plate 4 is integrally formed at the end of the left pipe connector 1 away from the externally threaded main hollow pipe 8, and an elastic check structure 5 is installed at the center of the guide plate 4. Guide ports 401 are provided on the front and rear sides of the guide plate 4. An annular hollow guide shell 6 is integrally formed at one end of the internal part of the externally threaded secondary hollow pipe 3, and a push rod 7 is fixed at the end of the annular hollow guide shell 6 near the right pipe connector 2. The push rod 7 is used to make the elastic check structure 5 gradually move away from the guide plate 4 during the threaded connection process of the left pipe connector 1 and the right pipe connector 2.

[0020] The elastic check structure 5 includes a valve stem 501 slidably installed at the center of the inside of the guide plate 4, a rear retainer 502 integrally formed at one end of the surface of the valve stem 501, and an elastic element installed inside the left pipe joint 1 on one side of the rear retainer 502. The rear retainer 502 is located on the left side of the guide plate 4, and the rear retainer 502 and the guide plate 4 are inserted and matched. A concave hole is provided at the end of the valve stem 501 near the top rod 7, and the diameter of the concave hole is equal to the outer diameter of the top rod 7.

[0021] A front disc 503 is fixed on the outer wall of the rear baffle 502 away from the guide plate 4. A gap is provided between the outer wall of the front disc 503 and the inner wall of the left pipe joint 1. The elastic element is a helical spring 504 fitted on one end of the surface of the valve stem 501 and a fan-shaped baffle 505 integrally formed on the top wall of the left pipe joint 1. One end of the helical spring 504 abuts against one side of the outer wall of the front disc 503.

[0022] A tapered tube 801 is integrally formed on the inner wall of the main hollow tube 8 near the left tube joint 1. The front and rear outer walls of the tapered tube 801 are provided with hollow grooves 802. When the left tube joint 1 and the right tube joint 2 are screwed together, the end of the push rod 7 will contact the valve stem 501. As the left tube joint 1 and the right tube joint 2 are gradually connected, the push rod 7 will also push the valve stem 501, the front disc 503, and the rear baffle 502 to move toward the fan-shaped baffle 505. At this time, the helical spring 504 between the left tube joint 1 and the front disc 503 will be compressed, and the front disc 503 will no longer block the guide port 401. Then, the medium flow in the upstream pipeline can enter the right tube joint 2, the annular hollow guide shell 6 and the downstream pipeline through the hollow groove 802 and the guide port 401.

[0023] A shaft hole is provided at the center of the tapered tube 801 for insertion and mating with the valve stem 501. The valve stem 501 is guided to slide through the shaft hole, thereby improving the movement stability of the valve stem 501.

[0024] After the left pipe joint 1 and the right pipe joint 2 are separated, the helical spring 504 elastically resets, causing the rear baffle 502 to adhere to the guide plate 4 and block the guide port 401, so that the upward moving pipeline forms a closed state through the external threaded main hollow pipe 8, the left pipe joint 1, and the elastic check structure 5 to block the outflow of the medium.

[0025] In this embodiment of the application, when connecting upstream and downstream pipelines, the threads of the externally threaded main hollow pipe 8, the externally threaded secondary hollow pipe 3, the left pipe connector 1, and the right pipe connector 2 are first checked to ensure they are intact, free from cracks, deformation, or contaminants. The elastic check valve 5 in the left pipe connector 1 is ensured to be intact and operate flexibly and reliably. Then, the left pipe connector 1 is aligned with the right pipe connector 2, and the opposite ends of the left pipe connector 1 and right pipe connector 2 are threaded together. During this process, excessive force should be avoided to prevent damage to the threads and the elastic check valve 5. During the screwing and connecting of left pipe joint 1 and right pipe joint 2, the push rod 7 will cause the elastic check structure 5 to activate and keep the elastic check structure 5 in a normally open state until the left pipe joint 1 and right pipe joint 2 are connected. Then the external thread main hollow pipe 8, left pipe joint 1, right pipe joint 2, and external thread secondary hollow pipe 3 are in a conductive state. At this time, the medium flow in the upstream pipeline connected to the external thread main hollow pipe 8 can enter the upstream pipeline through the left pipe joint 1, right pipe joint 2, and external thread secondary hollow pipe 3.

[0026] When disassembling the left pipe joint 1 and right pipe joint 2 between the upstream and downstream pipelines, the workers should close the valves or isolation devices of the upstream and downstream pipelines to ensure that the pressure inside the pipeline drops to zero. Then, loosen the left pipe joint 1 and right pipe joint 2 counterclockwise. During the disassembly process, the pipeline should be kept stable to prevent accidental injury caused by sudden loosening. During the process of disconnecting the left pipe joint 1 and right pipe joint 2, the push rod 7 will gradually stop contacting the elastic check structure 5, and the elastic check structure 5 will close on its own, so that the left pipe joint 1 is in the normally closed state.

Claims

1. An integral connector for connecting two pipes, characterized in that: The device includes a left pipe connector (1), a right pipe connector (2) with a threaded connection at one end of the left pipe connector (1), and an externally threaded main hollow pipe (8) and an externally threaded secondary hollow pipe (3) integrally formed on the opposite ends of the left pipe connector (1) and the right pipe connector (2). The left pipe connector (1) has a guide plate (4) integrally formed at the end away from the externally threaded main hollow pipe (8), and an elastic check structure (5) is installed at the center of the guide plate (4). The guide plate (4) has guide ports (401) on both the front and rear sides. The externally threaded secondary hollow pipe (3) has an annular hollow guide shell (6) integrally formed at one end, and a push rod (7) is fixed at the end of the annular hollow guide shell (6) near the right pipe connector (2). The push rod (7) is used to make the elastic check structure (5) gradually move away from the guide plate (4) during the threaded connection of the left pipe connector (1) and the right pipe connector (2).

2. The integral connector for connecting two pipes according to claim 1, characterized in that: The elastic check structure (5) includes a valve stem (501) slidably installed at the center of the guide plate (4), a rear baffle (502) integrally formed at one end of the surface of the valve stem (501), and an elastic element installed inside the left pipe joint (1) on one side of the rear baffle (502). The rear baffle (502) is located on the left side of the guide plate (4), and the rear baffle (502) and the guide plate (4) are inserted into each other.

3. The integral connector for connecting two pipes according to claim 2, characterized in that: The rear baffle (502) has a front disc (503) fixed on the outer wall of the side away from the guide plate (4), and a gap is provided between the outer wall of the front disc (503) and the inner wall of the left pipe joint (1).

4. The integral connector for connecting two pipes according to claim 3, characterized in that: The elastic element is a helical spring (504) fitted on one end of the valve stem (501) and a fan-shaped baffle (505) integrally formed on the top wall of the left pipe joint (1). One end of the helical spring (504) abuts against one side of the outer wall of the front disc (503).

5. The integral connector for connecting two pipes according to claim 4, characterized in that: The outer threaded hollow tube (8) has a tapered tube (801) integrally formed on the inner wall of the side near the left pipe joint (1), and the front and rear outer walls of the tapered tube (801) are provided with hollow grooves (802). The center of the tapered tube (801) is provided with a shaft hole for insertion and mating with the valve stem (501).

6. The integral joint for connecting two pipes according to claim 2, characterized in that: The valve stem (501) has a recessed hole at one end near the top rod (7), and the diameter of the recessed hole is equal to the outer diameter of the top rod (7).

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