Connecting mechanism for pipelines

Abstract

The utility model discloses a connecting mechanism for a pipeline, which comprises two connecting pipes which are symmetrically distributed, and a corrugated pipe is fixedly connected between the opposite end parts of the two connecting pipes; the insertion pipe is fixedly installed in the connecting pipe, the external pipeline can be inserted into the surface of the insertion pipe, the insertion pipe is in a conical shape, and meanwhile the narrow end of the insertion pipe is away from the corrugated pipe; the fixing pipe is slidably inserted into the end, away from the corrugated pipe, of the connecting pipe, the end, close to the connecting pipe, of the fixing pipe is conical, the taper of the fixing pipe is the same as that of the inserting pipe, and meanwhile the fixing pipe is inserted between the inserting pipe and the inner wall of the connecting pipe; and the driving assembly is used for driving the fixed pipe to move. According to the utility model, the deformation amount of each part between the external pipeline and the connecting pipe can be ensured to be consistent, so that the probability of leakage caused by thermal expansion and cold contraction of the whole connecting mechanism when the external temperature change is relatively large is effectively reduced, and comprehensively, the functions are more perfect when the connecting mechanism is used.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, and more specifically to a connecting mechanism for pipelines. Background Art

[0002] Pipeline is a commonly used device in our daily life and production process. Its main purpose is to transport liquid or gas. However, the length of the pipeline after production is mostly fixed. When the length is insufficient, it is necessary to use a special connection mechanism to connect it.

[0003] In the prior art, a Chinese patent publication number CN219866735U discloses a connection mechanism for drainage pipes, comprising two groups of connection pipes; a bamboo tube is provided between the two groups of connection pipes; two groups of fixing bolts are symmetrically threadedly connected on the outer wall of each group of connection pipes with the central axis of the connection pipe; one end of each group of fixing bolts extends to the interior of the corresponding group of connection pipes, and is drivingly connected to a group of fixing plates. The utility model fixes the two groups of drainage pipes between the two groups of fixing plates in one group of connection pipes respectively, and then utilizes the bendable property of the bamboo tube to arbitrarily adjust the bending angles of the two groups of drainage pipes. Not only can the connected pipes be buried in grooves with different degrees of curvature, thereby improving the convenience of installation work, but the spacing between the two groups of fixing plates can be adjusted, and the fixing work can be completed regardless of the diameter of the drainage pipe, thereby improving the compatibility of the connection mechanism.

[0004] When the above-mentioned prior art is in use, the fixing bolts are used to drive the fixing plate to clamp the pipe. However, there are multiple fixing bolts, which can only be rotated in sequence. In this way, it is difficult to control the number of rotations of each bolt. Once the number of rotations of the fixing bolts is inconsistent, the corresponding fixing plate will move differently, and finally the pipe and the connecting pipe will be non-concentric, which will cause different deformation amounts of various parts of the sealing ring. In the subsequent use process, when the temperature changes greatly, it is easy to cause leakage due to thermal expansion and contraction. In general, it still has certain defects in use. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a connecting mechanism for pipelines to solve the problems existing in the above-mentioned background technology.

[0006] The utility model provides the following technical solution: a connecting mechanism for pipelines, comprising:

[0007] There are two connecting pipes, which are symmetrically distributed. A bellows is fixedly connected between the opposite ends of the two connecting pipes, and the bellows can be bent and deformed arbitrarily. A connecting rod is provided between the two connecting pipes, and the two ends of the connecting rod are rotatably connected to the two connecting pipes respectively;

[0008] The cannula is fixedly mounted inside the connecting pipe, and the external pipe can be inserted on the surface of the cannula, the cannula is tapered, and the narrow end of the cannula is away from the corrugated pipe;

[0009] A fixed pipe, the fixed pipe is slidably inserted at the end of the connecting pipe away from the corrugated pipe, the end of the fixed pipe close to the connecting pipe is tapered, and the taper is the same as that of the inserting pipe, and the fixed pipe is inserted between the inserting pipe and the inner wall of the connecting pipe;

[0010] A driving assembly is used to drive the fixed pipe to move.

[0011] Furthermore, the driving assembly includes a guide tube, which is fixedly mounted on the surface of the connecting tube. The surface of the fixed tube is rotatably sleeved with a driving tube. The outer wall of the driving tube is threadedly connected to the inner wall of the guide tube. A connecting ring is fixedly mounted on the end of the driving tube. The connecting ring is rotatably mounted on the surface of the fixed tube, and the connecting ring can drive the fixed tube to move.

[0012] Furthermore, a limiting ring is installed on the surface of the fixing pipe, and there are two limiting rings in total, which are respectively located on both sides of the connecting ring.

[0013] Furthermore, a driving nut is fixedly mounted on a surface of the connecting ring away from the driving tube, and the driving nut is simultaneously sleeved on the surface of the fixed tube.

[0014] Furthermore, a movable preload ring is fixedly installed on the inner wall of the driving tube, and the movable preload ring is rotatably sleeved on the surface of the connecting tube, a fixed preload ring is fixedly installed on the surface of the connecting tube, and a compression spring is connected between the fixed preload ring and the movable preload ring, and the compression spring is sleeved on the surface of the connecting tube.

[0015] Furthermore, the movable pre-tightening ring is arranged on a side of the fixed pre-tightening ring, and the movable pre-tightening ring is close to the bellows.

[0016] Furthermore, a plurality of through grooves are provided on the surface of the tapered end portion of the fixing tube, and the tapered end portion of the fixing tube is made of elastic material.

[0017] Technical effects and advantages of the utility model:

[0018] 1. The utility model uses a tapered insert and a tapered fixed pipe end to clamp the external pipe during the entire use process. In contrast, the tapered insert can automatically guide the external pipe to remain concentric with the connecting pipe, which can ensure that the deformation amounts at various locations between the external pipe and the connecting pipe are consistent, thereby effectively reducing the probability of leakage of the entire connecting mechanism due to thermal expansion and contraction when the external temperature changes greatly. In general, the function is more complete when used.

[0019] 2. In the entire use process of the utility model, the user only needs to rotate the drive nut to install it. In contrast, it is not necessary to rotate multiple other bolts in sequence, which undoubtedly simplifies the installation steps and makes it more convenient for users to use.

[0020] 3. After the installation is completed, the movable preload ring will always have the force to move in the direction of the bellows under the action of the compression spring, and this will also make the fixed pipe have the force to move in the direction of the bellows, which will effectively prevent loosening. In comparison, it is more reliable to use and further ensures stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0023] Figure 3 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0024] Figure 4 For this utility model Figure 2 Enlarged schematic diagram of point B in the middle.

[0025] The accompanying drawings are marked as follows: 1. connecting pipe; 2. bellows; 3. connecting rod; 4. insert pipe; 5. fixed pipe; 6. guide pipe; 7. driving pipe; 8. connecting ring; 9. limiting ring; 10. driving nut; 11. movable preload ring; 12. fixed preload ring; 13. compression spring; 14. through groove. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The connection mechanism for a pipeline involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0027] Reference Figure 1-4 The utility model provides a connecting mechanism for pipelines, comprising:

[0028] There are two connecting pipes 1, which are symmetrically distributed. A bellows 2 is fixedly connected between the opposite ends of the two connecting pipes 1, and the bellows 2 can be bent and deformed arbitrarily. A connecting rod 3 is provided between the two connecting pipes 1, and the two ends of the connecting rod 3 are rotatably connected to the two connecting pipes 1 respectively;

[0029] The insert pipe 4 is fixedly installed inside the connecting pipe 1, and the external pipe can be inserted on the surface of the insert pipe 4, the insert pipe 4 is tapered, and the narrow end of the insert pipe 4 is away from the corrugated pipe 2;

[0030] The fixed pipe 5 is slidably inserted at the end of the connecting pipe 1 away from the corrugated pipe 2. The end of the fixed pipe 5 close to the connecting pipe 1 is tapered, and the taper is the same as that of the inserting pipe 4. At the same time, the fixed pipe 5 is inserted between the inserting pipe 4 and the inner wall of the connecting pipe 1;

[0031] A driving assembly is used to drive the fixed pipe 5 to move.

[0032] When in use, just insert the two pipe ends to be connected into the fixed pipe 5 respectively, and pass through the fixed pipe 5 into the connecting pipe 1 until the end of the external pipe is sleeved on the surface of the insert pipe 4. At this time, the fixed pipe 5 can be driven to move by the driving component, so that the tapered end of the fixed pipe 5 is inserted into the gap between the insert pipe 4 and the inner wall of the connecting pipe 1, which will synchronously clamp the external pipe, so that the connection can be achieved.

[0033] The driving assembly includes a guide tube 6, which is fixedly installed on the surface of the connecting tube 1. A driving tube 7 is rotatably sleeved on the surface of the fixed tube 5. The outer wall of the driving tube 7 is threadedly connected to the inner wall of the guide tube 6. A connecting ring 8 is fixedly installed on the end of the driving tube 7. The connecting ring 8 is rotatably installed on the surface of the fixed tube 5, and the connecting ring 8 can drive the fixed tube 5 to move. In this way, it is only necessary to rotate the driving tube 7. In this way, the driving tube 7 will move along the axis of the guide tube 6, thereby driving the connecting ring 8 to move, and then driving the fixed tube 5 to move, and finally the tapered end of the fixed tube 5 is inserted into the gap between the insert 4 and the inner wall of the connecting tube 1 to clamp the external pipeline.

[0034] A limiting ring 9 is installed on the surface of the fixed tube 5 . There are two limiting rings 9 , which are respectively located on both sides of the connecting ring 8 . In this way, it can be ensured that the movement of the connecting ring 8 can stably drive the fixed tube 5 to move.

[0035] A driving nut 10 is fixedly mounted on the side of the connecting ring 8 away from the driving tube 7, and the driving nut 10 is also sleeved on the surface of the fixed tube 5. In this way, the driving nut 10 can be rotated by an external wrench to drive the connecting ring 8 and the driving tube 7 to rotate.

[0036] A movable pre-tightening ring 11 is fixedly installed on the inner wall of the driving tube 7, and the movable pre-tightening ring 11 is rotatably sleeved on the surface of the connecting tube 1, a fixed pre-tightening ring 12 is fixedly installed on the surface of the connecting tube 1, and a compression spring 13 is connected between the fixed pre-tightening ring 12 and the movable pre-tightening ring 11, and the compression spring 13 is sleeved on the surface of the connecting tube 1, so that under the action of the compression spring 13, the movable pre-tightening ring 11 will always have the force to move in the direction of the bellows 2, and this will also make the fixed tube 5 have the force to move in the direction of the bellows 2, which will effectively prevent loosening.

[0037] The movable pre-tightening ring 11 is arranged on the side of the fixed pre-tightening ring 12 , and the movable pre-tightening ring 11 is close to the corrugated tube 2 , so that it can be ensured that the fixed tube 5 moves toward the direction of the corrugated tube 2 .

[0038] A plurality of through grooves 14 are formed on the surface of the tapered end of the fixing pipe 5 , and the tapered end of the fixing pipe 5 is made of elastic material, so that the tapered end of the fixing pipe 5 can be more easily clamped to the external pipe.

[0039] Therefore, the complete usage process is to first insert the two pipe ends to be connected into the fixed pipe 5 respectively, and pass through the fixed pipe 5 into the connecting pipe 1 until the end of the external pipe is sleeved on the surface of the insert pipe 4. At this time, the drive nut 10 can be rotated by an external tool, and the drive nut 10 will drive the connecting ring 8 to rotate, and then drive the driving pipe 7 to rotate. In this way, the driving pipe 7 will move along the axis of the guide pipe 6, thereby driving the connecting ring 8 to move, and at this time, the fixed pipe 5 will also move with the connecting ring 8, so that the tapered end of the fixed pipe 5 is inserted into the gap between the insert pipe 4 and the inner wall of the connecting pipe 1, and this will synchronously clamp the external pipe, so that the connection can be achieved, and then the drive nut 10 can be continued to be rotated to make the fixed pipe 5 drive the external pipe to continue to move, thereby ensuring that the external pipe is tightly sleeved on the surface of the insert pipe 4, so that the entire installation process is completed.

[0040] In summary, during the entire use process, the tapered insert tube 4 and the tapered fixed tube 5 ends are used to clamp the external pipe. In contrast, the tapered insert tube 4 can automatically guide the external pipe to remain concentric with the connecting pipe 1, which can ensure that the deformation amounts at various locations between the external pipe and the connecting pipe 1 are consistent, thereby effectively reducing the probability of leakage of the entire connecting mechanism due to thermal expansion and contraction when the external temperature changes greatly. Overall, the function is more complete.

[0041] At the same time, during the entire use process, the user only needs to rotate the drive nut 10 to install it. In contrast, it is not necessary to rotate the other multiple bolts in sequence, which undoubtedly simplifies the installation steps and makes it more convenient for users to use.

[0042] Furthermore, after the installation is completed, under the action of the compression spring 13, the movable preload ring 11 will always have the force to move in the direction of the bellows 2, and this will also make the fixed tube 5 have the force to move in the direction of the bellows 2, which will effectively prevent loosening. In comparison, it is more reliable to use and further ensures stability.

[0043] Finally, it should be noted that: the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connecting mechanism for a pipeline, characterized in that: include: Connecting pipes (1), wherein there are two connecting pipes (1) and they are symmetrically distributed, a bellows (2) is fixedly connected between opposite ends of the two connecting pipes (1), and the bellows (2) can be bent and deformed arbitrarily, a connecting rod (3) is provided between the two connecting pipes (1), and both ends of the connecting rod (3) are rotatably connected to the two connecting pipes (1) respectively; The insert pipe (4) is fixedly installed inside the connecting pipe (1), and the external pipe can be inserted on the surface of the insert pipe (4), the insert pipe (4) is tapered, and the narrow end of the insert pipe (4) is away from the corrugated pipe (2); A fixed tube (5), the fixed tube (5) being slidably inserted at the end of the connecting tube (1) away from the corrugated tube (2), the end of the fixed tube (5) close to the connecting tube (1) being tapered, and having the same taper as the inserting tube (4), and the fixed tube (5) being inserted between the inserting tube (4) and the inner wall of the connecting tube (1); A driving assembly is used to drive the fixed pipe (5) to move.

2. A connection mechanism for supply pipes according to claim 1, characterized in that: The driving assembly comprises a guide tube (6), wherein the guide tube (6) is fixedly mounted on the surface of the connecting tube (1), a driving tube (7) is rotatably sleeved on the surface of the fixed tube (5), an outer wall of the driving tube (7) is threadedly connected to the inner wall of the guide tube (6), a connecting ring (8) is fixedly mounted on the end of the driving tube (7), the connecting ring (8) is rotatably mounted on the surface of the fixed tube (5), and the connecting ring (8) can drive the fixed tube (5) to move.

3. A connection mechanism for supply pipes according to claim 2, characterized in that: A limiting ring (9) is installed on the surface of the fixed tube (5), and there are two limiting rings (9) in total, which are respectively located on both sides of the connecting ring (8).

4. A connection mechanism for supply pipes according to claim 3, characterized in that: A driving nut (10) is fixedly mounted on a surface of the connecting ring (8) away from the driving tube (7), and the driving nut (10) is simultaneously sleeved on the surface of the fixed tube (5).

5. A connection mechanism for supply pipes according to claim 2, characterized in that: A movable preload ring (11) is fixedly mounted on the inner wall of the driving tube (7), and the movable preload ring (11) is rotatably sleeved on the surface of the connecting tube (1), a fixed preload ring (12) is fixedly mounted on the surface of the connecting tube (1), and a compression spring (13) is connected between the fixed preload ring (12) and the movable preload ring (11), and the compression spring (13) is sleeved on the surface of the connecting tube (1).

6. A connection mechanism for a supply pipe according to claim 5, characterized in that: The movable pre-tightening ring (11) is arranged on the side of the fixed pre-tightening ring (12), and the movable pre-tightening ring (11) is close to the bellows (2).

7. A connection mechanism for a supply pipe according to claim 1, characterized in that: A plurality of through grooves (14) are provided on the surface of the conical end portion of the fixing tube (5), and the conical end portion of the fixing tube (5) is made of elastic material.

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