Double-external-thread straight joint

Abstract

The utility model provides a straight joint with double external threads, and belongs to the technical field of pipeline joints. The double-external-thread straight joint comprises a first connecting part, a second connecting part and a rotary connecting piece. The first nut is fixedly arranged outside the first threaded end pipe, and one end of the corrugated pipe fixedly communicates with one end of the first threaded end pipe. The second nut fixedly sleeves the second threaded end pipe, and the other end of the corrugated pipe is rotationally connected with one end of the second threaded end pipe through the rotary connecting piece. The first threaded end pipe is in butt joint with a port of a water pipe, and the first nut is rotated through tools such as a wrench to drive the first threaded end pipe to rotate for threaded connection installation. The first nut drives the corrugated pipe to rotate while driving the first threaded end pipe to rotate. Due to the fact that the corrugated pipe can be bent by a certain angle, even if the two pipe fittings are not located at the same axis position, the second threaded end pipe can be smoothly screwed into the end opening of the other pipeline, and the applicability of the connector in the connecting process is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting technology, and more specifically, to a double external thread straight connector. Background Technology

[0002] A double-threaded straight-through fitting is a straight-through pipe fitting with two external threaded ports. It is mainly used to connect two pipes of the same or different diameters to ensure smooth fluid flow in the pipeline system.

[0003] During the connection and installation process, there is often a situation where the two pipes are not in a coaxial position. Due to the slight deviation between the axes of the two pipes, it is difficult to align and tighten the threaded ends of the conventional double male thread straight connector during screw installation, making screw installation difficult. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a double male thread straight connector, which aims to improve the problem that the slight deviation between the axes of the two pipes makes it difficult to align and tighten the threaded ports of conventional double male thread straight connectors during screw installation.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a double external thread straight connector, including a first connecting part, a second connecting part, and a rotating connecting member.

[0007] The first connecting part includes a first threaded end tube, a first nut and a bellows. The first nut is fixedly disposed outside the first threaded end tube, and one end of the bellows is fixedly connected to one end of the first threaded end tube.

[0008] The second connecting part includes a second threaded end tube and a second nut. The second nut is fixedly sleeved on the outside of the second threaded end tube, and the other end of the bellows is rotatably connected to one end of the second threaded end tube through the rotating connector.

[0009] In one embodiment of this utility model, the rotating connector includes a convex ring, an end shell, and a sealing washer. The convex ring is fixedly connected to the end of the bellows away from the first threaded end tube. The end shell is fixed to the end of the second nut away from the second threaded end tube, and the convex ring is rotatably disposed inside the end shell. The sealing washer is disposed between the second threaded end tube and the second nut.

[0010] In one embodiment of this utility model, the outer surface of the end shell is provided with an external thread, and one end of the second nut is provided with a threaded groove that is screwed into the end shell.

[0011] In one embodiment of this utility model, the rotating connector further includes a third nut, which is fixedly sleeved on the outside of the end shell.

[0012] In one embodiment of this utility model, the second threaded end tube and the second nut are both provided with annular grooves that cooperate with the sealing gasket.

[0013] In one embodiment of the present invention, the sealing gasket includes a gasket body with an annular structure, and the outer surface of the gasket body is disposed inside the annular groove.

[0014] In one embodiment of this utility model, a cavity layer is provided inside the washer body.

[0015] In one embodiment of the present invention, the sealing gasket further includes spacer strips, and a plurality of spacer strips are arranged in a ring shape inside the cavity layer.

[0016] The beneficial effects of this utility model are as follows: This utility model provides a double-threaded straight-through connector, as described above. The first threaded end tube is connected to the port of a water pipe. By rotating the first nut with a wrench or similar tool, the first threaded end tube is rotated, thus achieving the threaded connection. Simultaneously, the first nut rotates the first threaded end tube, which in turn rotates the corrugated pipe. Because the corrugated pipe can be bent at a certain angle, even if the two pipes are not coaxial, the second threaded end tube can still be smoothly screwed into the port of another pipe, improving the applicability of the connector. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the double external thread straight connector structure provided in this embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the first connecting portion and the convex ring structure provided for an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the second connection portion provided for an embodiment of this utility model;

[0021] Figure 4 A schematic diagram of the end shell, sealing washer, and third nut provided for an embodiment of this utility model;

[0022] Figure 5 A schematic diagram of the cross-sectional structure of the sealing gasket provided for an embodiment of this utility model.

[0023] In the diagram: 10 - First connecting part; 110 - First threaded end tube; 120 - First nut; 130 - Bellows; 20 - Second connecting part; 210 - Second threaded end tube; 220 - Second nut; 230 - Threaded groove; 30 - Rotating connector; 310 - Convex ring; 320 - End shell; 330 - Sealing washer; 331 - Washer body; 332 - Cavity layer; 333 - Spacer strip; 350 - Third nut; 360 - Ring groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example

[0026] Please see Figures 1-5 This utility model provides a double external thread straight connector, including a first connecting part 10, a second connecting part 20 and a rotating connector 30.

[0027] The rotating connector 30 is used to rotatably connect the first connecting part 10 and the second connecting part 20. Through the cooperation of the first connecting part 10, the second connecting part 20 and the rotating connector 30, two pipes with misaligned axes can be quickly screwed together.

[0028] Please see Figure 1 , Figure 2 and Figure 3 The first connecting portion 10 includes a first threaded end tube 110, a first nut 120, and a bellows 130. The first nut 120 is fixedly disposed outside the first threaded end tube 110, and one end of the bellows 130 is fixedly connected to one end of the first threaded end tube 110. The bellows 130 and the first threaded end tube 110 can be connected and fixed by welding. The second connecting portion 20 includes a second threaded end tube 210 and a second nut 220. The second nut 220 is fixedly sleeved outside the second threaded end tube 210, and the other end of the bellows 130 is rotatably connected to one end of the second threaded end tube 210 through a rotating connector 30.

[0029] Connect the first threaded end pipe 110 to the port of a water pipe. Use a wrench or other tools to turn the first nut 120, which in turn rotates the first threaded end pipe 110 to complete the screw connection. Simultaneously, the first nut 120 rotates the first threaded end pipe 110, which in turn rotates the corrugated pipe 130. Because the corrugated pipe 130 can be bent at a certain angle, even if the two pipes are not coaxial, the second threaded end pipe 210 can still be smoothly screwed into the port of another pipe, improving the applicability of the joint connection.

[0030] In the specific implementation described above, please refer to Figure 2 and Figure 4 The rotating connector 30 includes a convex ring 310, an end shell 320, and a sealing washer 330. The convex ring 310 is fixedly connected to the end of the bellows 130 away from the first threaded end tube 110, and the convex ring 310 and the bellows 130 can be connected by welding. The end shell 320 is fixed to the end of the second nut 220 away from the second threaded end tube 210, and the convex ring 310 is rotatably disposed inside the end shell 320. The sealing washer 330 is disposed between the second threaded end tube 210 and the second nut 220. Rotation is possible between the convex ring 310 and the end shell 320, and the sealing washer 330 provides a seal between them.

[0031] For further details, please refer to Figure 3 and Figure 4 The end shell 320 has an external thread, and the second nut 220 has a threaded groove 230 at one end that screws into the end shell 320. The second nut 220 and the threaded groove 230 are designed for easy assembly and disassembly. The rotating connector 30 also includes a third nut 350, which is fixedly sleeved on the outside of the end shell 320. The third nut 350 is designed to facilitate the rotation of the end shell 320 by rotating the third nut 350.

[0032] For details, please refer to Figure 4 and Figure 5 The second threaded end tube 210 and the second nut 220 are both provided with annular grooves 360 that mate with the sealing washer 330. The sealing washer 330 includes a ring-shaped washer body 331, with the outer part of the washer body 331 disposed inside the annular groove 360. A cavity layer 332 is provided inside the washer body 331. The sealing washer 330 also includes spacer strips 333, with multiple spacer strips 333 arranged in a ring shape inside the cavity layer 332. The cavity layer 332 and the spacer strips 333 provide better elasticity for the washer body 331 to seal the gap between the convex ring 310 and the end shell 320, resulting in a better sealing effect.

[0033] The working principle of this double-threaded straight connector is as follows: In use, the first threaded end tube 110 is connected to the port of a water pipe. Using a wrench or similar tool, the first nut 120 is turned, causing the first threaded end tube 110 to rotate for screw-in installation. Simultaneously, the first nut 120 rotates the first threaded end tube 110, which in turn rotates the corrugated pipe 130. Because the corrugated pipe 130 can be bent at a certain angle, even if the two pipes are not coaxial, the second threaded end tube 210 can still be smoothly screwed into the port of another pipe, improving the applicability of the connector.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-ferrule straight-through connector, comprising: Comprising The first connecting part (10) comprises a first threaded end pipe (110), a first nut (120) and a corrugated pipe (130), the first nut (120) is fixedly arranged outside the first threaded end pipe (110), and one end of the corrugated pipe (130) is fixedly and communicatively arranged with one end of the first threaded end pipe (110); The second connecting part (20) and the rotating connecting piece (30), the second connecting part (20) comprises a second threaded end pipe (210) and a second nut (220), the second nut (220) is fixedly sleeved outside the second threaded end pipe (210), and the other end of the corrugated pipe (130) is rotatably connected with one end of the second threaded end pipe (210) through the rotating connecting piece (30).

2. A dual-ferrule straight-through connector as claimed in claim 1, characterized in that The rotating connecting piece (30) comprises a convex ring (310), an end shell (320) and a sealing washer (330), the convex ring (310) is fixedly and communicatively arranged with one end of the corrugated pipe (130) away from the first threaded end pipe (110), the end shell (320) is fixed at one end of the second nut (220) away from the second threaded end pipe (210), and the convex ring (310) is rotatably arranged inside the end shell (320), and the sealing washer (330) is arranged between the second threaded end pipe (210) and the second nut (220).

3. A dual-ferrule straight-through junction as claimed in claim 2, characterized in that The outer part of the end shell (320) is provided with an external thread, and one end of the second nut (220) is provided with a threaded groove (230) matched with the end shell (320) in screwing.

4. A dual-ferrule straight-through junction as claimed in claim 3, characterized in that The rotating connecting piece (30) further comprises a third nut (350), and the third nut (350) is fixedly sleeved outside the end shell (320).

5. A dual-ferrule straight-through junction as defined in claim 2, wherein, The second threaded end pipe (210) and the second nut (220) opposite sides are provided with ring grooves (360) matched with the sealing washer (330).

6. A dual-ferrule straight-through junction as claimed in claim 5, characterized in that The sealing washer (330) comprises a washer main body (331) in a circular ring structure, and the outer part of the washer main body (331) is arranged inside the ring groove (360).

7. A dual-ferrule straight-through junction as defined in claim 6, wherein, The inner part of the washer main body (331) is provided with a cavity layer (332).

8. A dual-ferrule straight-through junction as claimed in claim 7, characterized in that The sealing washer (330) further comprises a spacer strip (333), and a plurality of spacer strips (333) are annularly arranged inside the cavity layer (332).

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