Metal pipeline connecting piece

Abstract

The utility model relates to the technical field of pipeline connection, in particular to a metal pipeline connecting piece which comprises a connecting pipe, end ring plates are arranged at the two ends of the connecting pipe in a sliding mode, a driving assembly for driving the end ring plates to slide is arranged on the connecting pipe, an elastic bag pipe is arranged between the two end ring plates, and sealing rings are arranged on the end ring plates. The sealing ring is used for abutting against the end of the pipeline, a fixing assembly is arranged on the connecting pipe and used for fixing the connecting pipe to the pipeline, restraining pipes are arranged at the two ends of the connecting pipe in a sliding mode, one ends of the restraining pipes are arranged on the end ring plate, and the restraining pipes are located between the elastic bag pipe and the connecting pipe. The sealing device has the advantages of being easy to install, good in sealing effect and long in service life.

Description

Technical Field

[0001] This application relates to the technical field of pipeline connection, and particularly relates to a metal pipeline connector. Background Art

[0002] A pipeline connector refers to an element used to connect, transfer, distribute, or control the flow of pipelines. Pipeline connectors are widely used in industries such as petroleum, chemical, natural gas, electricity, and medicine. According to their different functions and uses, pipeline connectors can be classified into several different categories, including pipe joints, pipe joint fittings, flanges, etc.

[0003] Chinese Patent with Publication No. CN220688329U discloses a pipeline connector, which includes an inner opening ring that fits against the joint of the inner wall of the pipeline, and an outer opening ring that fits against the joint of the outer wall of the pipeline. The outer opening ring is provided with a circular groove along its outer peripheral contour. A fastening clamp is sleeved on the outer periphery of the outer opening ring and on both sides of the circular groove. An outer protection ring is sleeved outside the outer opening ring and the fastening clamp. The outer protection ring is provided with a circular protrusion that is inserted into the circular groove along its inner wall contour. The opening of the fastening clamp is located at the opening of the outer protection ring. The inner wall of the outer opening ring is provided with a rubber layer.

[0004] The above technology squeezes the rubber layer to the outer side wall of the pipeline through the outer opening ring, and achieves the sealing connection effect due to the deformation of the rubber layer. However, since the above outer opening ring is larger than the diameter of the pipeline, the rubber layer at the opening of the outer opening ring is squeezed and wrinkled. Therefore, a relatively large binding force is required to make the wrinkled part of the rubber layer closely adhere to the outer side wall of the pipeline to achieve the sealing effect, which will increase the installation difficulty for workers and has deficiencies. Summary of the Utility Model

[0005] In order to improve the problem of difficult installation of pipeline connection, this application provides a metal pipeline connector.

[0006] The metal pipeline connector provided by this application adopts the following technical solution:

[0007] A metal pipeline connector includes a connecting pipe. End ring plates are slidably arranged at both ends of the connecting pipe. A driving component for driving the end ring plates to slide is arranged on the connecting pipe. An elastic bladder tube is arranged between the two end ring plates. A sealing ring is arranged on the end ring plate, and the sealing ring is used to press against the end of the pipeline. A fixing component is arranged on the connecting pipe, and the fixing component is used to fix the connecting pipe on the pipeline.

[0008] By adopting the above technical solution, the worker drives the end ring plates at both ends of the connecting pipe close to the ends of the pipeline through the driving component until the sealing rings on the end ring plates are pressed against the ends of the pipeline. At this time, the elastic bladder tube is deformed by being stretched by the end ring plates at both ends, so that the elastic bladder tube is communicated with the pipeline. Then, the connecting pipe is fixed on the pipeline through the fixing component. This process only needs to press the sealing ring against the end of the pipeline to achieve sealing, reducing the installation difficulty for the worker.

[0009] Optionally, restraint tubes are slidably arranged at both ends of the connecting pipe. One end of each restraint tube is arranged on the end ring plate, and the restraint tubes are located between the elastic bladder tube and the connecting pipe.

[0010] By adopting the above technical solution, when the end ring plate slides, the end ring plate drives the restraint tubes to move synchronously, so that the restraint tubes restrain and protect the elastic bladder tube between the end ring plate and the connecting pipe, reducing the possibility of the elastic bladder tube being damaged due to the increase in the internal pressure of the pipe.

[0011] Optionally, the driving component includes a plurality of screws circumferentially arranged on the end ring plate. The screws are slidably arranged on the connecting pipe. A plurality of driving gears are rotatably arranged on the connecting pipe. The driving gears correspond to the screws one by one, and the driving gears are threadedly connected to the screws. A driving ring gear is coaxially rotatably arranged on the connecting pipe, and the driving ring gear meshes with all the driving gears.

[0012] By adopting the above technical solution, when the worker rotates the driving ring gear forward, the driving ring gear synchronously drives a plurality of driving gears to rotate. Since the driving gears are rotatably connected to the connecting pipe, the rotation of the driving gears causes the screws to slide along the direction from the connecting pipe to the end ring plate, and the screws drive the sealing ring to approach the end of the pipeline through the end ring plate.

[0013] Optionally, the fixing component includes a positioning ring coaxially arranged on the end ring plate. The positioning ring is used to be sleeved outside the pipeline. A plurality of positioning studs are circumferentially threadedly connected to the positioning ring. A positioning block is arranged on the positioning stud, and the positioning block is used to press against the outer side wall of the pipeline.

[0014] By adopting the above technical solution, when the sealing ring approaches the end of the pipeline, the worker sequentially rotates a plurality of positioning studs, and the plurality of positioning studs drive the positioning blocks to press against the outer side wall of the pipeline, thereby adjusting the coaxiality of the positioning ring and the pipeline and fixing the positioning ring on the pipeline at the same time. Then, the worker rotates the driving ring gear forward again, so that the sealing ring between the pipeline and the end ring plate is squeezed and deformed, and finally the positioning studs are tightened.

[0015] Optionally, a lever is hinged to the driving ring gear. A locking ring is coaxially sleeved on the connecting pipe, and a plurality of locking grooves for the lever to be clamped are circumferentially and evenly formed on the locking ring.

[0016] By adopting the above technical solution, the worker drives the driving gear ring to rotate through the lever, making it easier for the worker to rotate. At the same time, after the driving gear ring finishes rotating, the worker rotates the lever so that the lever is stuck in the locking groove of the locking ring, thereby reducing the possibility of the driving gear ring rotating back and ensuring the sealing effect of the sealing ring on the pipe end.

[0017] Optionally, a protective ring pipe is coaxially and slidably arranged on the connecting pipe. The locking ring is located between the protective ring pipe and the connecting pipe. A fixing groove is formed on the protective ring pipe for being stuck on the positioning stud. A fixing block is threadedly connected to the positioning stud, and the fixing block is used to press the protective ring pipe against the positioning ring.

[0018] By adopting the above technical solution, after the positioning stud stops rotating, the worker pushes the protective ring pipe, and the protective ring pipe approaches the positioning stud until the fixing groove on the protective ring pipe abuts against the positioning stud. Then the worker tightens the fixing block to press the protective ring pipe against the positioning ring, so that the components between the protective ring pipe and the connecting pipe are isolated from the external environment, which is beneficial to improving the service life of the driving gear, the driving gear ring and the screw.

[0019] Optionally, the sealing ring includes a first ring unit and a second ring unit, and the end of the elastic bladder tube is located between the first ring unit and the second ring unit.

[0020] By adopting the above technical solution, the worker bonds the end of the elastic bladder tube between the first ring unit and the second ring unit. When the first ring unit and the second ring unit are squeezed and deformed, the sealing performance between the elastic bladder tube and the first ring unit and the second ring unit will be further improved, reducing the possibility of the medium in the pipe accidentally flowing out from the end of the elastic bladder tube.

[0021] Optionally, a transition convex ring is arranged on the end ring plate, and the elastic bladder tube is attached to the transition convex ring.

[0022] By adopting the above technical solution, when the elastic bladder tube deforms as the end ring plate moves, the end of the elastic bladder tube is smoothly stretched through the transition convex ring, reducing the possibility of the elastic bladder tube being scratched by the edge of the end ring plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The worker drives the end ring plates at both ends of the connecting pipe to approach the pipe end through the driving assembly until the sealing ring on the end ring plate abuts tightly against the pipe end. At this time, the elastic bladder tube is stretched and deformed by the end ring plates at both ends, so that the elastic bladder tube is communicated with the pipe. Then the connecting pipe is fixed to the pipe through the fixing assembly. This process only needs to abut the sealing ring against the pipe end to achieve sealing, reducing the installation difficulty for the worker.

[0025] 2. The worker rotates the driving gear ring in the forward direction, and the driving gear ring drives multiple driving gears to rotate synchronously. Since the driving gears are rotatably connected to the connecting pipe, the rotation of the driving gears causes the screw rod to slide along the connecting pipe towards the end ring plate. The screw rod drives the sealing ring to approach the end of the pipe through the end ring plate;

[0026] 3. When the sealing ring approaches the end of the pipe, the worker rotates multiple positioning studs in sequence. The multiple positioning studs drive the positioning blocks to tightly press against the outer sidewall of the pipe, thereby adjusting the coaxiality of the positioning ring and the pipe, and at the same time fixing the positioning ring on the pipe. Then the worker rotates the driving gear ring in the forward direction again, causing the sealing ring between the pipe and the end ring plate to be extruded and deformed. Finally, just tighten the positioning studs;

[0027] 4. After the positioning studs stop rotating, the worker pushes the protective ring pipe. The protective ring pipe approaches the positioning studs until the fixing groove on the protective ring pipe abuts against the positioning studs. Then the worker tightens the fixing block, pressing the protective ring pipe tightly against the positioning ring, so that the components between the protective ring pipe and the connecting pipe are isolated from the external environment, which is beneficial to improving the service life of the driving gears, the driving gear ring and the screw rod. Brief Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of an embodiment of the present application.

[0029] Figure 2 is a cross-sectional view of the positional relationship among the end ring plate, the screw rod and the elastic capsule tube in an embodiment of the present application.

[0030] Figure 3 is Figure 2 an enlarged view of part A in

[0031] Description of the Reference Numerals: 0, pipe; 1, connecting pipe; 2, end ring plate; 3, driving assembly; 31, screw rod; 32, driving gear; 33, driving gear ring; 4, elastic capsule tube; 5, sealing ring; 51, first ring unit; 52, second ring unit; 6, fixing assembly; 61, positioning ring; 62, positioning stud; 63, positioning block; 7, restraining pipe; 8, lever; 9, locking ring; 10, locking groove; 11, protective ring pipe; 12, fixing groove; 13, fixing block; 14, transition convex ring; 15, sliding groove. Detailed Description of the Embodiment

[0032] The following Figures 1-3 further describes the present application in detail with reference to the attached

[0033] An embodiment of the present application discloses a metal pipe connector.

[0034] Refer to Figure 1, A metal pipe connector includes a connecting pipe 1. End ring plates 2 are slidably arranged at both ends of the connecting pipe 1. A driving assembly 3 for driving the end ring plates 2 to slide is arranged on the connecting pipe 1. Constraint pipes 7 are coaxially and slidably arranged at both ends of the connecting pipe 1. One end of each constraint pipe 7 is welded to the end ring plate 2. An elastic bladder tube 4 is arranged between the two end ring plates 2. The elastic bladder tube 4 is made of rubber material. The constraint pipe 7 is located between the elastic bladder tube 4 and the connecting pipe 1.

[0035] Referring to Figure 1 、 Figure 2 and Figure 3 , A sealing ring 5 is arranged on the end ring plate 2. The sealing ring 5 includes a first ring unit 51 and a second ring unit 52. Both the first ring unit 51 and the second ring unit 52 are made of flexible rubber material. The end of the elastic bladder tube 4 is bonded between the first ring unit 51 and the second ring unit 52. The first ring unit 51 is bonded to the end ring plate 2. The second ring unit 52 is used to press against the end of the pipe 0. A transition convex ring 14 is welded on the end ring plate 2. The elastic bladder tube 4 is attached to the transition convex ring 14.

[0036] Workers glue both ends of the elastic bladder tube 4 between the first ring unit 51 and the second ring unit 52 to seal the gap between the end ring plate 2 and the connecting pipe 1.

[0037] Referring to Figure 1 、 Figure 2 and Figure 3 , The driving assembly 3 includes a plurality of screws 31 welded circumferentially and uniformly on the end ring plate 2. The axis of the screw 31 is parallel to the axis of the connecting pipe 1. The screw 31 is slidably inserted into the connecting pipe 1. A sliding groove 15 for inserting the screw 31 is provided on the connecting pipe 1. A plurality of driving gears 32 are rotatably connected to the connecting pipe 1. The driving gears 32 correspond to the screws 31 one by one. The driving gears 32 are coaxially and threadedly connected to the screws 31. A driving ring gear 33 is coaxially and rotatably connected to the connecting pipe 1. The driving ring gear 33 meshes with all the driving gears 32.

[0038] Referring to Figure 1 、 Figure 2 and Figure 3 , A lever 8 is hinged on the driving ring gear 33. A locking ring 9 is coaxially welded on the outer side wall of the connecting pipe 1. A plurality of locking grooves 10 for engaging the lever 8 are circumferentially and uniformly provided on the locking ring 9. When the lever 8 is engaged in the locking groove 10, the axis of the lever 8 is parallel to the axis of the connecting pipe 1.

[0039] Workers rotate the lever 8 in the forward direction. The lever 8 drives the driving ring gear 33 to rotate in the forward direction. The driving ring gear 33 synchronously drives all the driving gears 32 to rotate synchronously and in the same direction. Since the driving gears 32 are rotatably connected to the connecting pipe 1 and a plurality of screws 31 are fixed to the end ring plate 2.

[0040] Therefore, the driving gear 32 rotates to cause the screw 31 to slide along the direction from the connecting pipe 1 to the end ring plate 2. The screw 31 drives the second ring unit 52 to approach the end of the pipe 0 through the end ring plate 2. During this process, the elastic bladder tube 4 continuously deforms. At the same time, the end ring plate 2 drives the restraint tube 7 to block the gap between the end ring plate 2 and the connecting pipe 1 until the second ring unit 52 abuts against the end of the pipe 0.

[0041] Referring to Figure 1 、 Figure 2 and Figure 3 As shown in, a fixing assembly 6 is arranged on the connecting pipe 1. The fixing assembly 6 is used to fix the connecting pipe 1 on the pipe 0. The fixing assembly 6 includes a positioning ring 61 coaxially welded to the end ring plate 2. The positioning ring 61 is used to sleeved outside the pipe 0. A plurality of positioning studs 62 are circumferentially and evenly threadedly connected to the positioning ring 61. A positioning block 63 is rotatably connected to the positioning stud 62. The positioning block 63 is used to abut against the outer side wall of the pipe 0.

[0042] Referring to Figure 1 、 Figure 2 and Figure 3 As shown in, a protective ring pipe 11 is coaxially and slidably sleeved on the connecting pipe 1. The locking ring 9 is located between the protective ring pipe 11 and the connecting pipe 1. A plurality of fixing grooves 12 are formed on the protective ring pipe 11. The fixing grooves 12 correspond to the positioning studs 62 one by one. The fixing grooves 12 are used to be stuck on the positioning studs 62. A fixing block 13 is threadedly connected to the positioning stud 62. The fixing block 13 is used to press the protective ring pipe 11 against the positioning ring 61.

[0043] Then, the worker rotates a plurality of positioning studs 62 in sequence. The positioning studs 62 drive the positioning blocks 63 to abut against the outer side wall of the pipe 0, so that the pipe 0 and the connecting pipe 1 are coaxially aligned. After that, the worker drives the driving gear ring 33 to rotate forward again through the lever 8, so that both the first ring unit 51 and the second ring unit 52 are pressed against the end of the pipe 0. Then, the worker tightens a plurality of positioning studs 62 again. Finally, the worker pushes the protective ring pipe 11 until the fixing grooves 12 on the protective ring pipe 11 abut against the positioning studs 62. Then, the worker tightens the fixing block 13 to press the protective ring pipe 11 against the positioning ring 61.

[0044] The implementation principle of a metal pipe connector in the embodiment of the present application is as follows: The worker glues both ends of the elastic bladder tube 4 between the first ring unit 51 and the second ring unit 52 to seal the gap between the end ring plate 2 and the connecting pipe 1.

[0045] The worker rotates the lever 8 forward. The lever 8 drives the driving gear ring 33 to rotate forward. The driving gear ring 33 synchronously drives a plurality of driving gears 32 to rotate synchronously and in the same direction. Since the driving gears 32 are rotatably connected to the connecting pipe 1 and a plurality of screws 31 are fixed to the end ring plate 2.

[0046] Therefore, the driving gear 32 rotates to cause the screw rod 31 to slide along the direction from the connecting pipe 1 to the end ring plate 2. The screw rod 31 drives the second ring unit 52 to approach the end of the pipe 0 through the end ring plate 2. During this process, the elastic bladder tube 4 continuously deforms. At the same time, the end ring plate 2 drives the restraint tube 7 to block the gap between the end ring plate 2 and the connecting pipe 1 until the second ring unit 52 abuts against the end of the pipe 0.

[0047] Then, the worker sequentially rotates a plurality of positioning studs 62. The positioning studs 62 drive the positioning blocks 63 to abut tightly against the outer side wall of the pipe 0, so that the pipe 0 and the connecting pipe 1 are coaxial. After that, the worker drives the driving gear ring 33 to rotate forward again through the lever 8, so that both the first ring unit 51 and the second ring unit 52 are pressed against the end of the pipe 0. Then, the worker tightens the plurality of positioning studs 62 again. Finally, the worker pushes the protective ring pipe 11 until the fixing groove 12 on the protective ring pipe 11 abuts against the positioning studs 62. Then, the worker tightens the fixing block 13 to press the protective ring pipe 11 against the positioning ring 61.

[0048] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A metal pipe connector, characterized in that: It includes a connecting pipe (1), end ring plates (2) are slidably arranged at both ends of the connecting pipe (1), a driving component (3) for driving the sliding of the end ring plates (2) is arranged on the connecting pipe (1), an elastic bladder tube (4) is arranged between the two end ring plates (2), a sealing ring (5) is arranged on the end ring plate (2), the sealing ring (5) is used to tightly press against the end of the pipeline (0), a fixing component (6) is arranged on the connecting pipe (1), and the fixing component (6) is used to fix the connecting pipe (1) on the pipeline (0).

2. The metal pipe connector according to claim 1, characterized in that: Constraint pipes (7) are slidably arranged at both ends of the connecting pipe (1), one end of the constraint pipe (7) is arranged on the end ring plate (2), and the constraint pipe (7) is located between the elastic bladder tube (4) and the connecting pipe (1).

3. A metal pipe connector according to claim 1, characterized in that: The driving component (3) includes a plurality of screws (31) circumferentially arranged on the end ring plate (2), the screws (31) are slidably arranged on the connecting pipe (1), a plurality of driving gears (32) are rotatably arranged on the connecting pipe (1), the driving gears (32) correspond to the screws (31) one by one, the driving gears (32) are threadedly connected to the screws (31), a driving ring gear (33) is coaxially rotatably arranged on the connecting pipe (1), and the driving ring gear (33) is meshed with all the driving gears (32).

4. The metal pipe connector according to claim 3, characterized in that: The fixing component (6) includes a positioning ring (61) coaxially arranged on the end ring plate (2), the positioning ring (61) is used to be sleeved outside the pipeline (0), a plurality of positioning studs (62) are circumferentially threadedly connected to the positioning ring (61), and a positioning block (63) is arranged on the positioning stud (62), and the positioning block (63) is used to tightly press against the outer side wall of the pipeline (0).

5. A metal pipe connector according to claim 4, characterized in that: A lever (8) is hinged on the driving ring gear (33), a locking ring (9) is coaxially sleeved on the connecting pipe (1), and a plurality of locking grooves (10) for the lever (8) to be clamped are evenly circumferentially formed on the locking ring (9).

6. The metal pipe connector according to claim 5, characterized in that: A protective ring pipe (11) is coaxially slidably arranged on the connecting pipe (1), the locking ring (9) is located between the protective ring pipe (11) and the connecting pipe (1), a fixing groove (12) is formed on the protective ring pipe (11), the fixing groove (12) is used to be stuck on the positioning stud (62), and a fixing block (13) is threadedly connected to the positioning stud (62), and the fixing block (13) is used to press the protective ring pipe (11) tightly on the positioning ring (61).

7. A metal pipe connector according to claim 1, characterized in that: The sealing ring (5) includes a first ring unit (51) and a second ring unit (52), and the end of the elastic bladder tube (4) is located between the first ring unit (51) and the second ring unit (52).

8. A metal pipe connector according to claim 7, characterized in that: A transition convex ring (14) is arranged on the end ring plate (2), and the elastic bladder tube (4) is attached to the transition convex ring (14).

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