Internal drive retaining ring leak-free sealing tee

Abstract

This utility model relates to a leak-free sealing tee with an internally driven retaining ring. A flange is provided at the service end of the tee, and a locking ring groove is provided on the inner circumference of the flange. A plug is sealed and connected within the through hole at the lower end of the locking ring groove. Several retaining rings are provided on the upper surface of the plug, and a drive disc is connected to the center of the plug. The drive disc is connected to the retaining rings via a linkage structure. A movement limiting structure is also provided on the retaining rings. Rotation of the drive disc drives the retaining rings to move along the movement limiting structure via the linkage structure, inserting or removing them from the locking ring groove. This sealing tee uses a flange with a machined locking ring groove structure, and the plug is positioned within the tee by inserting the drive retaining ring into the locking ring groove.

Description

Technical Field

[0001] This utility model relates to a leak-free sealing tee with an internally driven retaining ring, belonging to the technical field of pipeline construction without interrupting traffic. Background Technology

[0002] The plugging tee is an essential component used in existing pipeline maintenance. After being plugged, the branch pipe can be repaired on-site without affecting the medium transport of other pipelines.

[0003] Existing sealing tees typically use a method of opening holes on the side of the pipe wall and positioning the sealing plug with radial bolts. However, since the tee shell is directly connected to the existing pipeline after maintenance, leaks will occur no matter how the radial opening is sealed, creating potential quality problems for the repaired pipeline. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a leak-free sealing tee with an internally driven retaining ring. The sealing tee adopts a flange with a locking ring groove structure, and the plug is positioned in the tee by inserting the driving retaining ring into the locking ring groove.

[0005] To solve the above problems, the specific technical solution of this utility model is as follows: A leak-free sealing tee with an internally driven retaining ring, wherein a flange is provided at the maintenance end of the tee body, and a locking ring groove is provided on the inner circumference of the flange, and a plug is sealed and connected in the through hole at the lower end of the locking ring groove; a plurality of retaining rings are provided on the upper surface of the plug, and a driving disc is connected to the center of the plug, and the driving disc is connected to the retaining rings through a linkage structure; a moving limiting structure is also provided on the retaining rings, and the rotation of the driving disc drives the retaining rings to move along the moving limiting structure through the linkage structure, and insert or remove them from the locking ring groove.

[0006] The linkage structure consists of several arc-shaped guide rails on the drive disc. One end of each arc-shaped guide rail is close to the center, while the other end is far from the center. The four arc-shaped guide rails are arranged in a fan-blade pattern. One end of the retaining ring slides in conjunction with the arc-shaped guide rail.

[0007] The linkage structure consists of several radial push rods on the drive disc, with arc-shaped grooves at the ends of the corresponding retaining rings, and the push rods are supported and engaged with the inclined surfaces of the arc-shaped grooves.

[0008] The movable limiting structure has two parallel guide grooves symmetrically arranged on the retaining ring, and a screw is provided at the corresponding position of the plug, with the screw slidingly connected to the guide groove.

[0009] The outer circumference of the plug has 2 to 3 sealing grooves arranged in parallel, and the sealing ring is located in the sealing groove, which is sealed and matched with the inner circumference of the three-way body with the locking ring groove at the bottom.

[0010] The internally driven retaining ring leak-free sealing tee of this application adopts the above structure and has the following advantages:

[0011] 1. The use of snap rings and locking ring grooves for insertion not only makes insertion convenient, but also eliminates the need for the original radial locking holes, thereby avoiding the risk of pipeline leakage;

[0012] 2. The rotational motion of the drive disc is converted into the linear motion of the retaining ring, making it easy to operate;

[0013] 3. The guide groove and screw are used to ensure the stability of the linear movement of the retaining ring. Attached Figure Description

[0014] Figure 1 This is a perspective view of this application.

[0015] Figure 2 This is a top view of Embodiment 1 of this application.

[0016] Figure 3 This is a cross-sectional view (AA) of this application.

[0017] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0018] Figure 5 This is a schematic diagram of the working state of the retaining ring in Example 1.

[0019] Figure 6 This is a schematic diagram of the clasp at the end of its working state in Example 1.

[0020] Figure 7 This is a schematic diagram of the working state of the retaining ring in Example 2.

[0021] Figure 8 This is a schematic diagram of the working state of the retaining ring in Example 2. Detailed Implementation Example 1

[0022] like Figures 1 to 4As shown, a leak-free sealing tee with an internally driven retaining ring has a flange at the service end of the tee body 1. A locking ring groove 2 is provided on the inner circumference of the flange, and a plug 3 is sealed and connected within the through hole at the lower end of the locking ring groove 2. Several retaining rings 4 are provided on the upper surface of the plug 3, and a drive disc 5 is connected to the center of the plug 3. Several arc-shaped guide rails 6 are provided on the drive disc 5. In this embodiment, four are used. One end of each arc-shaped guide rail 6 is closer to the center than the other end, and the four arc-shaped guide rails 6 are arranged in a fan-blade configuration. One end of each retaining ring 4 slides against the arc-shaped guide rail 6. The mechanism is as follows: a limiting and moving structure is provided on the retaining ring 4, specifically, two parallel guide grooves 8 are symmetrically provided on the retaining ring 4, and a screw 9 is provided at the corresponding position of the plug 3. The screw 9 is slidably connected to the guide groove 8. When the drive disk 5 rotates, the arc-shaped guide rail 6 rotates and changes. The arc-shaped guide rail 6 pulls or pushes the retaining ring 4 to move inward or outward at the same time. At the same time, the moving direction of the retaining ring 4 is limited by the moving limiting structure, thereby ensuring that the drive disk 5 rotates and drives the retaining ring 4 to move along the moving guide groove through the arc-shaped guide rail 6, and inserts or removes it from the locking ring groove 2.

[0023] The outer circumference of the plug 3 is provided with 2 to 3 sealing grooves arranged in parallel. The sealing ring 10 is located in the sealing groove and is sealed with the inner circumference of the three-way body 1, which has a locking ring groove 2 at the bottom.

[0024] like Figure 5 As shown, when the retaining ring 4 is in working condition, one end of the retaining ring 4 is located at one end of the arc-shaped guide rail 6, and at the end of the arc-shaped guide rail 6 furthest from the center. At this time, the retaining ring 4 is located at the end furthest from the center, and the retaining ring 4 is inserted into the locking ring groove. The retaining ring 4 bears the pressure of the sealing medium of the plug 3.

[0025] like Figure 6 As shown, after the retaining ring finishes its work, the drive disk 5 is rotated, and one end of the retaining ring 4 moves along the arc-shaped guide rail 6. At the same time, the whole ring moves towards the center, thereby moving the retaining ring 4 out of the locking ring groove 2. Example 2

[0026] like Figure 7 and Figure 8 As shown, the linkage structure consists of several radial push rods 7 on the drive disc 5, each with an arc-shaped groove at its corresponding end of the retaining ring 4. The push rod 7 engages with the inclined surface of the arc-shaped groove. When the drive disc 5 rotates clockwise, the push rod 7 slides into the arc-shaped groove and gradually penetrates deeper into it, while the retaining ring 4 moves towards the center and exits the locking ring groove 2. When the drive disc 5 rotates counterclockwise, the push rod 7 slides out of the arc-shaped groove and gradually moves shallower out, while the retaining ring 4 moves towards the locking ring groove and gradually inserts into it. The remaining structure is the same as in Embodiment 1.

Claims

1. A leak-free sealing tee with an internally driven retaining ring, characterized in that: A flange is provided at the maintenance end of the three-way body (1), and a locking ring groove (2) is provided on the inner circumference of the flange. A plug (3) is sealed and connected in the through hole at the lower end of the locking ring groove (2). Several retaining rings (4) are provided on the upper surface of the plug (3). A drive disk (5) is connected to the center of the plug (3). The drive disk (5) is connected to the retaining ring (4) through a linkage structure. A moving limit structure is also provided on the retaining ring (4). The drive disk (5) rotates and drives the retaining ring (4) to move along the moving limit structure through the linkage structure, and inserts or removes the locking ring groove (2).

2. The leak-free sealing tee with internal drive retaining ring according to claim 1, characterized in that: The linkage structure consists of several arc-shaped guide rails (6) set on the drive disk (5). One end of the arc-shaped guide rail (6) is close to the center, and the other end is close to the center. The four arc-shaped guide rails (6) are distributed in a fan-shaped manner. One end of the retaining ring (4) is slidably engaged with the arc-shaped guide rail (6).

3. The leak-free sealing tee with internal drive retaining ring according to claim 1, characterized in that: The linkage structure consists of several radial push rods (7) on the drive disc (5), with an arc-shaped groove at the end of the corresponding retaining ring (4), and the push rod (7) is supported and engaged with the inclined surface of the arc-shaped groove.

4. The leak-free sealing tee with internal drive retaining ring according to claim 1, characterized in that: The movable limiting structure has two parallel guide grooves (8) symmetrically arranged on the retaining ring (4), and a screw (9) is provided at the corresponding position of the plug (3). The screw (9) is slidably connected to the guide groove (8).

5. The leak-free sealing tee with internal drive retaining ring according to claim 1, characterized in that: The outer circumference of the plug (3) is provided with 2 to 3 sealing grooves, and the sealing ring (10) is located in the sealing groove, which is sealed and matched with the inner circumference of the three-way body (1) with the locking ring groove (2) at the bottom.

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