Movable joint for pipeline connection

Abstract

The utility model discloses a movable joint for pipeline connection, which comprises a body, end blocks are fixed at two ends of the body, the end blocks are connected with a fixing sleeve through threads, a sealing ring sleeved outside a pipeline is arranged in the fixing sleeve, a convex block is fixed on the body, a through hole is arranged on the convex block, a lantern ring is sleeved on the body, and the lantern ring is sleeved on the body. A clamping rod is fixed to the lantern ring and penetrates through the through hole and an open hole formed in the fixing sleeve, the body is sleeved with a spring, and a limiting piece for limiting the clamping rod is arranged on the body. According to the utility model, the pushing force on the lantern ring is released, under the elastic action of the spring, the lantern ring can move until the clamping rod penetrates through the through hole and extends into the open hole, and the fixing sleeve is limited by the clamping rod and cannot rotate at the moment, so that the fixing sleeve can be effectively prevented from rotating due to external force and being separated from the body, and the connection between the fixing sleeve and the body is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible joints, in particular to a flexible joint for connecting pipelines. Background Art

[0002] When two pipes are connected, a pipe union is often required.

[0003] Both ends of the flexible joint are connected to fixed sleeves through threads. The pipeline abuts against the inside of the flexible joint through the fixed sleeve. Under the action of the sealing ring and the fixed sleeve, the pipeline is tightly connected to the flexible joint and leak-proof.

[0004] However, since the fixed sleeve is connected to the flexible joint through threads and the flexible joint lacks a limiting mechanism for the fixed sleeve, the fixed sleeve can be easily rotated by force and separated from the flexible joint.

[0005] Therefore, the traditional flexible joint can be improved so that it can avoid the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to solve the above problems and to provide a flexible joint for pipe connection.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A flexible joint for connecting pipes comprises a body, end blocks fixed at both ends of the body, and the end blocks are connected to fixed sleeves through threads, a sealing ring is provided in the fixed sleeve and is sleeved on the outside of the pipe, a protrusion is fixed on the body, and a through hole is provided on the protrusion, a ring is sleeved on the body, and a clamping rod is fixed on the ring, the clamping rod passes through the through hole and the opening provided in the fixed sleeve, a spring is sleeved on the body, and a limiting member for limiting the clamping rod is provided on the body.

[0009] Preferably, the limiting member includes a screw groove formed on the clamping rod, a circular groove is formed on the fixing sleeve, and a screw rod is connected to the screw groove via a thread, and a screw head is fixed at the end of the screw rod and extends into the circular groove.

[0010] Preferably, an intermediate ring is fixed on the main body, and the side wall of the intermediate ring is fixed to the spring.

[0011] Preferably, the spring pushes the collar to move until the collar moves into abutment with the protrusion.

[0012] Preferably, an elastic gasket is provided on the portion of the side wall of the fixing sleeve that abuts against the protrusion.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] 1. In the present application, by releasing the thrust on the collar, the collar can be moved under the elastic force of the spring until the clamping rod penetrates the through hole and extends into the opening. At this time, the fixing sleeve is restricted by the clamping rod and cannot rotate, thereby effectively preventing the fixing sleeve from being rotated by external force and separated from the main body, and the connection between the fixing sleeve and the main body is more stable.

[0015] 2. The present application connects the screw rod and the screw groove on the clamp rod through a threaded connection until the screw head at the end of the screw rod extends into the circular groove. At this time, under the action of the screw rod, the position of the clamp rod can be fixed. At this time, the ring will not move on the main body even if it is subjected to external force. Therefore, the clamp rod cannot be separated from the hole and the through hole, and the fixed sleeve is stably connected to the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure shows the overall structure of the pipeline flexible joint provided according to the embodiment of the present utility model;

[0017] Figure 2 A schematic diagram of the structure of a pipeline flexible joint according to an embodiment of the present utility model is shown;

[0018] Figure 3 A partial structural diagram of a fixing sleeve provided according to an embodiment of the utility model is shown.

[0019] Legend:

[0020] 1. Main body; 2. End block; 3. Protrusion; 4. Through hole; 5. Fixing sleeve; 6. Opening; 7. Circular groove; 8. Ring; 9. Clamping rod; 10. Spring; 11. Intermediate ring; 12. Screw groove; 13. Screw rod; 14. Screw head. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0022] This utility model provides a technical solution, please refer to Figure 1-3 :

[0023] A flexible joint for connecting pipes comprises a body 1, with end blocks 2 fixed at both ends. The end blocks 2 are threadedly connected to a fixing sleeve 5. The fixing sleeve 5 is provided with a sealing ring that fits over the exterior of the pipe. A protrusion 3 is fixed to the body 1, and a through-hole 4 is formed in the protrusion 3. An elastic gasket is provided on the sidewall of the fixing sleeve 5 where it abuts the protrusion 3. A collar 8 is sleeved on the body 1, and a clamping rod 9 is fixed to the collar 8. The clamping rod 9 extends through the through-hole 4 and the opening 6 formed in the fixing sleeve 5. A spring 10 is sleeved on the body 1, and a stopper is provided on the body 1 to limit the position of the clamping rod 9. An intermediate ring 11 is fixed to the body 1, and the sidewall of the intermediate ring 11 is fixed to the spring 10. The spring 10 pushes the collar 8 until it abuts the protrusion 3, thereby fixing the position of the fixing sleeve 5. Therefore, even when the collar 8 is not subjected to external forces, the elastic force of the spring 10 can still function to limit the position of the collar 8. Example

[0024] The technical solution is basically the same as that of embodiment 1, except that Figure 3 As shown, the limiting member includes a screw groove 12 formed in the clamping rod 9, a circular groove 7 formed in the fixing sleeve 5, and a screw rod 13 is threadedly connected to the screw groove 12. The end of the screw rod 13 is fixed with a screw head 14 that extends into the circular groove 7. The cooperation between the screw rod 13 and the screw head 14 can fix the position of the clamping rod 9. Therefore, the fixing sleeve 5 is restricted by the clamping rod 9 and cannot rotate under force, effectively preventing the fixing sleeve 5 from rotating and separating from the body 1.

[0025] In summary, the present embodiment provides a method of extending the pipe fitting into the body 1 through the fixing sleeve 5, pushing the collar 8 to move, so that the clamping rod 9 retracts into the through hole 4, and then the fixing sleeve 5 and the end block 2 can be connected by threads until the opening 6 formed on the fixing sleeve 5 is aligned with the through hole 4 formed on the protrusion 3.

[0026] Release the push on the collar 8, and under the elastic force of the spring 10, the collar 8 will move until the clamping rod 9 passes through the through hole 4 and extends into the opening 6. Then the screw 13 can be connected to the screw groove 12 opened on the clamping rod 9 by threading until the screw head 14 at the end of the screw 13 extends into the circular groove 7.

[0027] According to the above-mentioned pipe installation method, another pipe is connected to the other end of the body 1.

[0028] The above description of the embodiments is intended to enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flexible joint for pipe connection, comprising a body (1), characterized in that: End blocks (2) are fixed at both ends of the body (1), and the end blocks (2) are connected to fixed sleeves (5) through threads, and a sealing ring is provided inside the fixed sleeve (5) and is sleeved on the outside of the pipe. A protrusion (3) is fixed on the body (1), and a through hole (4) is provided on the protrusion (3). A collar (8) is sleeved on the body (1), and a clamping rod (9) is fixed on the collar (8). The clamping rod (9) passes through the through hole (4) and the opening (6) provided on the fixed sleeve (5). A spring (10) is sleeved on the body (1), and a limiting member for limiting the clamping rod (9) is provided on the body (1).

2. A flexible joint for pipe connection according to claim 1, characterized in that: The limiting member includes a screw groove (12) formed on the clamping rod (9), a circular groove (7) formed on the fixing sleeve (5), and a screw rod (13) is connected to the screw groove (12) through a thread, and a screw head (14) is fixed at the end of the screw rod (13) and extends into the circular groove (7).

3. A flexible joint for pipe connection according to claim 1, characterized in that: An intermediate ring (11) is fixed on the main body (1), and a side wall of the intermediate ring (11) is fixed to the spring (10).

4. A flexible joint for pipe connection according to claim 3, characterized in that: The spring (10) pushes the collar (8) to move until the collar (8) moves to abut against the protrusion (3).

5. The flexible joint for pipe connection according to claim 1, characterized in that: An elastic gasket is provided on the portion where the side wall of the fixing sleeve (5) abuts against the protrusion (3).

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