Water supply pipeline non-excavation repair joint with self-locking function

Abstract

The utility model relates to the field of pipeline non-excavation repair, and discloses a water supply pipeline non-excavation repair joint with a self-locking function, which comprises a repair pipeline, the left side of the repair pipeline is fixedly connected with a thread assembly, and the thread connection assembly is used for being connected with another group of repair pipelines. A sliding sleeve is fixedly connected to the right side of the repairing pipeline, a locking conical surface is arranged on the inner wall of the sliding sleeve, a sealing pipe is fixedly connected into the sliding sleeve, a locking circular truncated cone is elastically connected to the inner wall of the left side of the sliding sleeve through a limiting spring, and a positioning circular pipe is fixedly connected to the left side of the locking circular truncated cone. According to the utility model, by arranging the limiting spring, the sliding sleeve, the locking circular truncated cone and other structures, after the two groups of repaired pipelines are connected together through the threaded pipe, the limiting spring pushes the locking circular truncated cone to be tightened along the locking conical surface, so that the connection stability is improved, the shaking of the repaired pipelines is reduced, and the service life of the repaired pipelines is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pipeline trenchless repair, especially to a water supply pipeline trenchless repair joint with self-locking function. BACKGROUND

[0002] With the increasing use of large water conservancy pipeline and municipal pipeline and other pipeline facilities, the pipeline inevitably ages, damages, penetrates and so on. The urban underground pipe network is generally buried underground, and excavation repair affects urban traffic, enterprise production and other problems. With the continuous development of pipeline repair technology, trenchless repair technology has become a new development direction of pipeline repair technology because of its fast and efficient characteristics.

[0003] The water supply pipeline trenchless repair technology is a method for repairing the water supply pipeline without damaging the ground. A new pipeline is installed inside the original pipeline to form a tight fit, thereby achieving the purpose of repair. The new pipeline is composed of multiple short pipes, and a water supply pipeline trenchless repair joint with self-locking function is needed to connect them.

[0004] Currently, the water supply pipeline inside will have a bend, so multiple short pipes are usually used to connect to ensure that the area through the bend, and these short pipes usually only use a sealing ring and a buckle to connect by using friction. In the long-term use process, under the impact of water flow, it will loosen, thereby causing the connection to be not tight, affecting the service life of the repaired pipeline. Therefore, a water supply pipeline trenchless repair joint with self-locking function is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a water supply pipeline trenchless repair joint with self-locking function, which aims to improve the problem that the current connection in the prior art only uses a sealing ring and a buckle to connect, which will cause the connection to be not tight when shaking.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a water supply pipeline trenchless repair joint with self-locking function, comprising a repair pipeline, a threaded assembly is fixedly connected to the left side of the repair pipeline, the threaded assembly is used for connecting with another repair pipeline, a sliding sleeve is fixedly connected to the right side of the repair pipeline, a locking taper surface is formed in the inner wall of the sliding sleeve, a sealing pipe is fixedly connected inside the sliding sleeve, a locking circular table is elastically connected to the left side inner wall of the sliding sleeve through a limiting spring, and a positioning circular pipe is fixedly connected to the left side of the locking circular table.

[0007] Further description of the above technical scheme:

[0008] The sealing pipe comprises a connecting pipe, the connecting pipe is fixedly connected to the inside of the sliding sleeve, a sealing groove is formed in the outer periphery of the connecting pipe, and a sealing rubber ring is arranged in the sealing groove.

[0009] As a further description of the above technical solution:

[0010] The threaded assembly comprises a fixed pipe, the fixed pipe is fixedly connected to the left side of the repair pipeline, and the left side of the fixed pipe is fixedly connected with a threaded pipe.

[0011] As a further description of the above technical solution:

[0012] The threaded pipe is threadedly connected to the inside of the locking circular table and the inside of the positioning circular pipe.

[0013] As a further description of the above technical solution:

[0014] One end of the limiting spring is fixedly connected to the left side of the locking circular table, the other end of the limiting spring is fixedly connected to the inner wall on the left side of the sliding sleeve, and the locking circular table is slidably connected to the inside of the sliding sleeve.

[0015] As a further description of the above technical solution:

[0016] The positioning circular pipe is located in the inside of the limiting spring.

[0017] As a further description of the above technical solution:

[0018] The outer periphery of the locking circular table is provided with a conical surface, and the outer periphery of the locking circular table is matched with the inner wall of the locking conical surface and is in contact with the inner wall of the locking conical surface.

[0019] As a further description of the above technical solution:

[0020] The outer periphery of the connecting pipe is slidably connected to the inner wall on the side of the threaded pipe, and the outer periphery of the sealing rubber ring is slidably connected to the inner wall on the side of the threaded pipe.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] 1、The utility model discloses a limiting spring, a sliding sleeve, a locking circular table and other structures are arranged, two groups of repair pipelines are connected together through the threaded pipe, the limiting spring drives the locking circular table to be tightened along the locking conical surface, the stability of connection is improved, the shaking of the repair pipeline is reduced, and the service life of the repaired pipeline is increased.

[0023] 2. The utility model discloses, through set up connecting pipe, sealing groove, sealing rubber ring etc. structure, sealing pipe is inserted into the inside of threaded pipe, and threaded pipe will extrude three groups sealing rubber ring in proper order, make sealing rubber ring fill the gap between threaded pipe mixed sealing pipe, guarantee the sealing performance between pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The utility model proposes a whole front surface schematic diagram of the water supply pipeline trenchless repair joint with self-locking function;

[0025] Figure 2 The utility model proposes a sliding sleeve front surface separation schematic diagram of the water supply pipeline trenchless repair joint with self-locking function;

[0026] Figure 3 The utility model proposes a sliding sleeve top surface section schematic diagram of the water supply pipeline trenchless repair joint with self-locking function;

[0027] Figure 4 The utility model proposes a locking round table top surface section schematic diagram of the water supply pipeline trenchless repair joint with self-locking function.

[0028] LEGEND:

[0029] 1, repair pipeline, 2, fixed pipe, 3, threaded pipe, 4, sliding sleeve, 5, locking taper, 6, sealing pipe, 61, connecting pipe, 62, sealing groove, 63, sealing rubber ring, 7, limit spring, 8, locking round table, 9, positioning round pipe. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0031] REFERENCE Figure 1 - Figure 2The utility model provides an embodiment: a kind of self-locking function's water supply pipeline trenchless repair joint, including repair pipeline 1, repair pipeline 1 is generally set shorter, length is between 0.5M~1M, repair pipeline 1 left side is fixedly connected with threaded assembly, threaded connection assembly is used to be connected with another group repair pipeline 1, threaded assembly includes the fixed pipe 2 of fixed connection effect, fixed pipe 2 right side is fixedly connected in the left side of repair pipeline 1, fixed pipe 2 left side is fixedly connected with threaded pipe 3, repair pipeline 1 right side is fixedly connected with the sliding sleeve 4 of fixed connection effect, locking conical surface 5 is set in the inner wall of sliding sleeve 4, sealing tube 6 is fixedly connected in the inside of sliding sleeve 4.

[0032] Refer to Figure 2 - Figure 4 The left inner wall of sliding sleeve 4 is elastically connected with locking round table 8 by limiting spring 7, when locking round table 8 is not stressed, limiting spring 7 will push locking round table 8 to right, one end of limiting spring 7 is fixedly connected in the left side of locking round table 8, the other end of limiting spring 7 is fixedly connected on the left inner wall of sliding sleeve 4, locking round table 8 is slidably connected in the inside of sliding sleeve 4, sliding sleeve 4 limits that locking round table 8 can only slide left and right along the inner wall of sliding sleeve 4, locking round table 8 left side is fixedly connected with positioning round pipe 9, and positioning round pipe 9 is located in the inside of limiting spring 7, limits the position of limiting spring 7, so that limiting spring 7 is not prone to displacement, threaded pipe 3 is threadedly connected in the inside of locking round table 8, and threaded pipe 3 is threadedly connected in the inside of positioning round pipe 9, so that two repair pipelines 1 are connected together, the outer periphery of locking round table 8 is provided as a taper surface, the outer periphery of locking round table 8 is adapted to the shape of the inner wall of locking conical surface 5 and is in contact with each other, and limiting spring 7 will push locking round table 8 to right to make locking round table 8 tighten along the taper surface.

[0033] Refer to Figure 3 - Figure 4 Sealing tube 6 includes connecting pipe 61, and the outer periphery of connecting pipe 61 is fixedly connected in the inside of sliding sleeve 4, so that the inside of two repair pipelines 1 can be communicated, sealing groove 62 is formed in the outer periphery of connecting pipe 61, the sealing groove 62 is provided with three groups, and is linearly and evenly distributed on the outer periphery of connecting pipe 61, sealing rubber ring 63 is sleeved in the inside of sealing groove 62, the sealing rubber ring 63 has a certain elasticity, and will be deformed after being extruded, and the outer diameter is slightly larger than the inner diameter of threaded pipe 3, the outer periphery of connecting pipe 61 is slidably connected on the inner wall of the side of threaded pipe 3, the outer periphery of sealing rubber ring 63 is slidably connected on the inner wall of the side of threaded pipe 3, and multiple sealing rubber rings 63 ensure the sealing performance between connecting pipe 61 and threaded pipe 3.

[0034] Working principle: when the repair pipeline 1 is used for a long time, the repair pipeline 1 will shake under the impact of water flow, at this time, the shaking will be transmitted to the locking circular platform 8, at this time, the limiting spring 7 will push the locking circular platform 8 to the right, so that the locking circular platform 8 is always automatically tightened along the inner wall of the locking conical surface 5, so that the locking circular platform 8 is not easy to shake, thereby improving the stability of the connection, reducing the shaking of the repair pipeline 1, so that the connection is not easy to leak. When the sealing pipe 6 is inserted into the inside of the threaded pipe 3, the threaded pipe 3 will extrude the three groups of sealing rubber rings 63 in turn, so that the sealing rubber rings 63 are deformed after being extruded, and fill the gap between the threaded pipe 3 and the sealing pipe 6, ensuring the sealing performance between the pipes.

[0035] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A trenchless repair joint for water supply pipelines with self-locking function, comprising a repair pipeline (1), characterized in that: A threaded assembly is fixedly connected to the left side of the repair pipe (1), which is used to connect to another set of repair pipes (1). A sliding sleeve (4) is fixedly connected to the right side of the repair pipe (1). A locking cone surface (5) is provided on the inner wall of the sliding sleeve (4). A sealing tube (6) is fixedly connected inside the sliding sleeve (4). A locking frustum (8) is elastically connected to the inner wall of the left side of the sliding sleeve (4) through a limiting spring (7). A positioning tube (9) is fixedly connected to the left side of the locking frustum (8).

2. The trenchless repair joint for water supply pipelines with self-locking function according to claim 1, characterized in that: The sealing tube (6) includes a connecting tube (61), the outer periphery of which is fixedly connected to the inside of the sliding sleeve (4), and a sealing groove (62) is provided on the outer periphery of the connecting tube (61), and a sealing ring (63) is fitted inside the sealing groove (62).

3. A trenchless repair joint for water supply pipelines with self-locking function as described in claim 1, characterized in that: The threaded assembly includes a fixed tube (2), the right side of which is fixedly connected to the left side of the repair pipe (1), and the left side of which is fixedly connected to a threaded tube (3).

4. A trenchless repair joint for water supply pipelines with self-locking function according to claim 3, characterized in that: The threaded tube (3) is threadedly connected to the inside of the locking truncated cone (8) on its outer circumference, and the threaded tube (3) is threadedly connected to the inside of the positioning tube (9) on its outer circumference.

5. A trenchless repair joint for water supply pipelines with self-locking function according to claim 1, characterized in that: One end of the limiting spring (7) is fixedly connected to the left side of the locking frustum (8), and the other end of the limiting spring (7) is fixedly connected to the inner wall of the left side of the sliding sleeve (4). The outer periphery of the locking frustum (8) is slidably connected to the inside of the sliding sleeve (4).

6. A trenchless repair joint for water supply pipelines with self-locking function according to claim 1, characterized in that: The positioning tube (9) is located inside the limiting spring (7).

7. A trenchless repair joint for water supply pipelines with self-locking function according to claim 1, characterized in that: The outer periphery of the locking frustum (8) is set as a conical surface, and the outer periphery of the locking frustum (8) is adapted to the shape of the inner wall of the locking conical surface (5) and is in contact with each other.

8. A trenchless repair joint for water supply pipelines with self-locking function according to claim 2, characterized in that: The outer periphery of the connecting pipe (61) is slidably connected to the inner wall of the side of the threaded pipe (3), and the outer periphery of the sealing ring (63) is slidably connected to the inner wall of the side of the threaded pipe (3).

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