Anti-falling pipeline joint

Abstract

The utility model belongs to pipeline butt joint field especially relates to a kind of anti-falling pipeline butt joint.A kind of progressive insertion, easy installation, prevent pipeline damage's anti-falling pipeline butt joint, including limit ring etc.;Limit ring left and right sides are concentrically connected with annular butt joint, the outside wall of butt joint is provided with a row of snap ring, the outer side of snap ring is the inclined plane that is recessed to outside, the power groove of auxiliary butt joint is formed between adjacent two snap ring, the thickness of the snap ring of two sides is increasing from outside to inside.The utility model is through the inclined plane part of snap ring, when pipeline butt joint, can assist power to pipeline, reduce the resistance of butt joint, the thickness of the snap ring of two sides is increasing from outside to inside, therefore, when pipeline butt joint, pipeline is pushed from outside to inside, therefore, first through smallest snap ring, then sequentially increase, sequentially increase when pipeline is opened, to this can prevent pipeline from being opened instantaneously to cause pipeline damage.

Description

Technical Field

[0001] This utility model belongs to the field of pipe connection, and in particular relates to a pipe connection joint that prevents detachment. Background Technology

[0002] In modern industrial, construction, and fluid transport systems, pipe joints are critical components connecting pipelines, and their performance directly affects the sealing, stability, and safety of the entire system. To prevent pipes from detaching during use due to vibration, pressure changes, or external forces, existing pipe joints are typically designed with anti-detachment structures, such as snap rings, clips, or barbs. These structures effectively engage with the inner or outer wall of the pipe, achieving reliable mechanical locking and significantly improving the strength of the connection.

[0003] Existing anti-detachment pipe couplings still face a significant technical contradiction in practical applications: enhanced anti-detachment functionality often comes at the cost of increased installation difficulty. Specifically, to ensure the coupling securely holds the pipe, its anti-detachment structure (such as an elastic retaining ring or barbs) typically requires a certain radial expansion force or interference fit. This necessitates applying considerable force when inserting the coupling into the pipe to allow the pipe's inner wall to overcome the resistance of the anti-detachment structure, resulting in elastic deformation and smooth sliding. This "forced insertion" installation method is not only difficult and inefficient, especially in situations with limited space or frequent disassembly and reassembly; more importantly, excessive insertion force can easily cause scratches, deformation, or even cracks to the pipe's inner wall, particularly for softer plastic pipes such as PVC and PPR, where the risk of damage is even higher.

[0004] Therefore, there is an urgent need to develop a progressive insertion, easy-to-install, and anti-detachment pipe connector that prevents pipe damage. Summary of the Invention

[0005] In order to overcome the shortcomings of existing pipe fittings, such as difficulty in insertion and easy damage to the pipe, the purpose of this utility model is to provide a pipe fitting that is easy to install, prevents pipe damage, and is designed to prevent detachment.

[0006] The technical solution is as follows: a pipe joint for preventing detachment, including a limiting ring, a docking part and a retaining ring. The limiting ring has annular docking parts concentrically connected on both sides. A row of retaining rings is provided on the outer wall of each docking part. The outer side of each retaining ring is a slope that is recessed outward. An auxiliary docking groove is formed between two adjacent retaining rings. The thickness of the retaining rings on both sides increases from the outside to the inside.

[0007] As a further preferred option, it also includes a sealing ring body, with sealing ring grooves concentrically formed on the outer sides of the innermost limiting rings on both sides, and the sealing ring body is fitted inside the sealing ring grooves.

[0008] As a further preferred option, the depth of the sealing ring groove is greater than the radius of the sealing ring body, but less than the diameter of the sealing ring body.

[0009] As a further preferred option, a groove is provided between the limiting ring and the innermost retaining ring.

[0010] As a further preferred option, the outer edge of the mating part is a chamfered part with rounded corners.

[0011] As a further preferred option, the anti-detachment pipe joint is made of ductile iron.

[0012] This invention has the following advantages: The inclined surface of the retaining ring assists in pipe connection, reducing resistance. The thickness of the retaining rings on both sides increases from the outside to the inside. Therefore, during pipe connection, the pipe moves from the outside to the inside, first passing through the smallest retaining ring, and then progressively increasing in thickness as the pipe is stretched. This prevents the pipe from being suddenly stretched open and damaged. The depth of the sealing ring groove is greater than the radius of the sealing ring body but less than its diameter. Therefore, when the pipe passes through the sealing ring body during connection, the sealing ring body will not detach from the sealing ring groove due to the pipe's movement. Simultaneously, a portion of the sealing ring body remains outside the groove, effectively sealing the contact surface. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a cross-sectional view of the present invention.

[0015] Wherein: 1-Limiting ring, 2-Matching part, 3-Snap ring, 3a-Assist groove, 4-Sealing ring groove, 5-Snap groove, 6-Chamfered part, 7-Sealing ring body. Detailed Implementation

[0016] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).

[0017] Example: A type of anti-detachment pipe connector, such as Figure 1 and Figure 2As shown, the device includes a limiting ring 1, a docking part 2, retaining rings 3, and a sealing ring body 7. The limiting ring 1 has concentric annular docking parts 2 on both sides. The inner diameter of the docking part 2 is the same as the inner diameter of the limiting ring 1, while the outer diameter of the limiting ring 1 is larger than the outer diameter of the docking part 2. Pipes on both sides are inserted into the outer side of the docking part 2, with the end face of the pipe contacting both sides of the limiting ring 1. The limiting ring 1 limits the insertion position of the pipe. A row of retaining rings 3 is concentrically arranged on the outer wall of the docking part 2. The outer surface of each retaining ring 3 is an outwardly recessed slope. Adjacent retaining rings 3 form an auxiliary docking groove 3a, which is triangular. During pipe docking, the right-angled surfaces of the retaining rings 3 and the docking part 2 can engage the inner surface of the pipe. The sloped surface of the retaining rings 3 assists the pipe during docking, reducing docking resistance. The thickness of the retaining rings 3 increases from the outer side to the inner side. Therefore, during pipe docking, the pipe moves from the outside to the inside, passing through the smallest retaining ring first. 3. Then, the number of increments increases sequentially as the pipe is stretched open. This prevents the pipe from being damaged by sudden stretching. The outer surfaces of the innermost limiting rings 1 on both sides are concentrically provided with sealing ring grooves 4. The sealing ring body 7 is fitted inside the sealing ring groove 4. The depth of the sealing ring groove 4 is greater than the radius of the sealing ring body 7 but less than the diameter of the sealing ring body 7. Therefore, when the pipe passes through the sealing ring body 7, the sealing ring body 7 will not be pushed by the pipe and will not detach from the sealing ring groove 4. At the same time, part of the sealing ring body 7 will remain outside the sealing ring groove 4, which will seal the contact surface. A retaining groove 5 is provided between the limiting ring 1 and the innermost retaining ring 3. After the pipe and the connector are connected, the retaining groove 5 will clamp the end of the pipe. The outer edge of the connecting part 2 is a rounded chamfered part 6, which can facilitate the insertion of the pipe during connection. The anti-detachment pipe connector is made of ductile iron, which can effectively improve the mechanical properties of the connector, especially the plasticity and toughness.

[0018] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the present invention and should not be construed as limiting the scope of protection of the present invention in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A type of anti-detachment pipe connector, characterized in that: It includes a limiting ring (1), a docking part (2) and a retaining ring (3). The limiting ring (1) has an annular docking part (2) concentrically connected on both the left and right sides. The outer side wall of the docking part (2) is provided with a row of retaining rings (3). The outer side of the retaining ring (3) is a slope that is recessed outward. An auxiliary docking groove (3a) is formed between two adjacent retaining rings (3). The thickness of the retaining rings (3) on both sides increases from the outside to the inside.

2. The anti-detachment pipe connector as described in claim 1, characterized in that: It also includes a sealing ring body (7), and the outer sides of the innermost limiting rings (1) on both sides are concentrically provided with sealing ring grooves (4), and the sealing ring body (7) is fitted inside the sealing ring grooves (4).

3. The anti-detachment pipe joint as described in claim 2, characterized in that: The depth of the sealing ring groove (4) is greater than the radius of the sealing ring body (7) and less than the diameter of the sealing ring body (7).

4. The anti-detachment pipe joint as described in claim 3, characterized in that: A groove (5) is provided between the limiting ring (1) and the innermost retaining ring (3).

5. The anti-detachment pipe joint as described in claim 4, characterized in that: The outer edge of the mating part (2) is a chamfered part (6) with rounded corners.

6. The anti-detachment pipe joint as described in claim 1, characterized in that: The anti-detachment pipe joint is made of ductile iron.

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