Quick-release self-locking pipeline joint

Abstract

The utility model relates to the technical field of pipe joints, and provides a quick-release self-locking pipeline joint, which is matched with a pipe joint and a metal conduit for use, and comprises a pipe sleeve, the first end of the pipe sleeve is matched and tightly connected with the pipe joint, and the second end of the pipe sleeve is matched and fixedly connected with the metal conduit. A step cylinder is fixedly mounted on the peripheral surface of the first end of the pipe sleeve, and a first clamping groove is formed in the step cylinder; the outer sleeve nut is arranged on the outer side of the pipe sleeve in a sleeving mode and is in threaded connection with the pipe joint, and a second clamping groove is formed in the outer sleeve nut; the clamping sleeve is arranged on the outer side of the outer sleeve nut in a sleeving mode, clamping teeth are fixedly installed on the inner wall of the clamping sleeve, and the clamping teeth are used for being inserted into the first clamping groove and the second clamping groove at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe joints, in particular to a quick-release self-locking pipe joint. Background Art

[0002] There are three main structural approaches to achieving self-locking in currently used pipe fittings. The first involves directly squeezing the outer nut of the fitting closed with a threaded connection to achieve self-locking. The second involves inserting a non-metallic insert into the outer nut, closing the end, and then threading the fitting. The third involves threading the fitting first and then hinged with a safety wire to achieve self-locking.

[0003] The first type of pipe connector suffers from thread seizure and loss during use, and the locking force decreases with repeated assembly and disassembly. There's also a risk of the self-locking function failing after 15 to 30 reassembly cycles. The second type of pipe connector also suffers from a decrease in locking force with repeated assembly and disassembly, and is not heat-resistant. The third type of pipe connector is cumbersome and inefficient to install and disassemble. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a quick-release self-locking pipe joint, which can achieve self-locking and anti-loosening, as well as rapid installation and disassembly, and can be repeatedly disassembled and used without affecting the self-locking performance.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: a quick-release self-locking pipe joint, used in conjunction with a pipe joint and a metal conduit, comprising:

[0006] A pipe sleeve, wherein the first end of the pipe sleeve cooperates with and is tightly connected to the pipe joint, the second end of the pipe sleeve cooperates with and is fixedly connected to the metal conduit, and a stepped cylinder is fixedly mounted on the outer circumference of the first end of the pipe sleeve, and a first slot is formed on the stepped cylinder;

[0007] An outer sleeve nut, which is sleeved on the outside of the pipe sleeve and threadedly connected to the pipe joint, and has a second slot;

[0008] The ferrule is sleeved on the outside of the outer sleeve nut, and a latch tooth is fixedly installed on the inner wall of the ferrule, and the latch tooth is used to be inserted into the first slot and the second slot at the same time.

[0009] Furthermore, it further comprises a spring, wherein the spring is sleeved on the outer sleeve nut and causes the clamping sleeve to have a tendency to approach the first clamping groove;

[0010] The outer sleeve nut is sleeved with a clamping ring on the outer circumferential surface, which is used to prevent the spring from being separated from the outer sleeve nut.

[0011] Further, the inner wall of the clamping sleeve is in sliding contact with the outer circumferential surface of the clamping ring.

[0012] Further, the side wall of the second clamping groove is provided with a limiting groove.

[0013] Further, the clamping teeth are adapted to the first clamping groove and the second clamping groove.

[0014] Further, the material of the pipe sleeve is stainless steel.

[0015] Further, the material of the outer sleeve nut is high-temperature alloy or titanium alloy.

[0016] Further, the material of the spring is high-strength spring steel.

[0017] The utility model discloses a quick detachable self-locking pipeline joint, which has the advantages of simple structure, self-locking anti-loosening function, quick installation and disassembly by controlling the clamping teeth to be inserted into or separated from the first clamping groove, and repeated use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 3 It is Figure 1 It is a structural schematic diagram of the utility model without the clamping sleeve;

[0021] Figure 4 It is a structural schematic diagram of the utility model without the outer sleeve nut;

[0022] Figure 5 It is a structural schematic diagram of the metal conduit, pipe sleeve and pipe joint;

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the outer sleeve nut, clamping ring and spring;

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the clamping sleeve.

[0025] Figure numbers: 10-pipe joint, 20-metal conduit, 30-pipe sleeve, 31-step cylinder, 32-first groove, 33-clamping ring, 40-jacket nut, 41-second groove, 42-limiting groove, 43-annular groove, 50-clamping sleeve, 51-grip tooth, 60-spring. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0027] In this application, unless otherwise specified or limited, the terms "connect" and "fix" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "horizontal", "top", "bottom", "up", "down", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0029] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0030] like Figure 1-Figure 7 As shown, the utility model provides a quick-release self-locking pipe joint, which is used in conjunction with a pipe joint 10 and a metal conduit 20 and includes a pipe sleeve 30, an outer sleeve nut 40 and a clamping sleeve 50.

[0031] The first end of the sleeve 30 fits tightly against the pipe joint 10, while the second end fits against the metal conduit 20 and is securely connected via welding or other methods. A straight-through pipeline is formed between the metal conduit 20, the sleeve 30, and the pipe joint 10. A stepped cylindrical body 31 is fixedly mounted on the outer circumference of the first end of the sleeve 30. A first retaining groove 32 extending axially outward is defined within the inner end surface of the stepped cylindrical body 31.

[0032] The outer nut 40 is sleeved on the outer side of the pipe sleeve 30 and is threadedly connected to the pipe joint 10. The outer end surface of the outer nut 40 is provided with a second groove 41 extending axially inward. The width of the second groove 41 is the same as that of the first groove 32.

[0033] The ferrule 50 is sleeved on the outer side of the outer sleeve nut 40 , and a latching tooth 51 is fixedly mounted on the inner wall of the ferrule 50 . The latching tooth 51 is used to be inserted into the first latching groove 32 and the second latching groove 41 at the same time.

[0034] During installation of the present invention, the latching teeth 51 are inserted into the first latching groove 32 and the second latching groove 41 at the same time, so that the pipe sleeve and the outer sleeve nut 40 are relatively stopped to form a self-locking state.

[0035] When disassembling the present invention, the latching teeth 51 are simultaneously pulled out from the first slots 32, so that the pipe sleeve and the outer nut 40 can rotate freely. In this state, by twisting the outer nut 40, the threads between the outer nut 40 and the pipe joint 10 are loosened, and quick disassembly can be completed.

[0036] The utility model has a simple structure and a self-locking anti-loosening function. By controlling the locking tooth 51 to insert or disengage from the first locking groove 32, it can be quickly installed and removed, and can be repeatedly installed and removed. All parts are made of metal materials and do not contain rubber sealing gaskets, which can meet the requirements of use in high temperature environments.

[0037] In one embodiment, a spring 60 is further included. The spring 60 is sleeved on the outer sleeve nut 40 and causes the ferrule 50 to have a tendency to approach the first slot 32 .

[0038] An annular groove 43 is formed on the outer circumference of the outer nut 40. A retaining ring 33 is disposed in the annular groove 43. The retaining ring 33 is in sliding contact with the inner wall of the annular groove 43. The retaining ring 33 is used to prevent the spring 60 from detaching from the outer nut 40. A first end of the spring 60 contacts the retaining ring 33, and a second end of the spring 60 contacts the retaining sleeve 50.

[0039] In one embodiment, the inner wall of the ferrule 50 is in sliding contact with the outer peripheral surface of the clamping ring 33, thereby making the movement of the ferrule 50 more stable.

[0040] In one embodiment, a limiting groove 42 extending along the circumferential direction is formed on the side wall of the second engaging groove 41 .

[0041] In one embodiment, the latching teeth 51 are adapted to both the first latching slot 32 and the second latching slot 41 .

[0042] In one embodiment, the pipe sleeve is made of stainless steel to improve the corrosion resistance of the pipe sleeve.

[0043] In one embodiment, the outer sleeve nut 40 is made of a high-temperature alloy or a titanium alloy to meet the requirements of use in high-temperature environments.

[0044] In one embodiment, the spring 60 is made of high-strength spring steel.

[0045] The specific installation process of this utility model is:

[0046] First, slide the ferrule 50 away from the first slot 32. As the ferrule 50 slides, the internal spring 60 gradually compresses. When the spring 60 is compressed to its limit, the ferrule 50 slides to the stop slot 42 and cannot slide further. Rotate the ferrule 50 counterclockwise until the teeth 51 of the ferrule 50 are inserted into the stop slot 42. At this point, the teeth 51 do not stop the outer nut 40 and the pipe sleeve, allowing them to rotate freely relative to each other. In this state, tighten the outer nut 40 to the pipe connector 10 by turning the outer nut 40. When the threads are fully tightened, the pipe connector and the pipe connector 10 form a sealed pipeline, and the first slot 32 and the second slot 41 are aligned. After the thread is locked, the sleeve 50 on the outer nut 40 is rotated clockwise, and the tooth 51 enters the second groove 41. Under the elastic force of the compression spring 60, the sleeve 50 slides along the second groove 41 toward the direction close to the first groove 32 until the tooth 51 is inserted into the first groove 32 and the second groove 41 at the same time. At this time, the outer nut 40 and the pipe sleeve cannot rotate freely alone, forming a relative stop self-locking.

[0047] The specific disassembly process of this utility model is:

[0048] Slide the ferrule 50 away from the first slot 32. As the ferrule 50 slides, the internal spring 60 gradually compresses. When the spring 60 reaches its limit, the ferrule 50 slides to the stop slot 42 and cannot slide further. Rotate the ferrule 50 counterclockwise until the teeth 51 of the ferrule 50 engage the stop slot 42. At this point, the teeth 51 no longer engage the outer nut 40 and the pipe sleeve, allowing the outer nut 40 to rotate freely relative to the pipe sleeve. In this state, disassembly can be completed by twisting the outer nut 40 to loosen the threads between the outer nut 40 and the pipe joint 10.

[0049] Self-locking principle: After the present invention is installed and connected to the pipe fitting 10 and the metal conduit 20 to form a pipeline, the sleeve and the metal conduit 20 are welded together and cannot rotate. Simultaneously, the latching teeth 51 are simultaneously engaged in the first and second latching grooves 32 and 41, preventing the outer nut 40 from rotating independently. If the outer nut 40 tends to loosen, the sleeve, through the latching teeth 51, exerts a torque on the outer nut 40 to prevent it from loosening, thus achieving self-locking and preventing loosening.

[0050] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0051] In addition, it should be understood that, although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A quick-release self-locking pipe joint, used in conjunction with a pipe joint and a metal conduit, characterized by: include: A pipe sleeve, wherein the first end of the pipe sleeve cooperates with and is tightly connected to the pipe joint, the second end of the pipe sleeve cooperates with and is fixedly connected to the metal conduit, and a stepped cylinder is fixedly mounted on the outer circumference of the first end of the pipe sleeve, and a first slot is formed on the stepped cylinder; An outer sleeve nut, which is sleeved on the outside of the pipe sleeve and threadedly connected to the pipe joint, and has a second slot; The ferrule is sleeved on the outside of the outer sleeve nut, and a latch tooth is fixedly installed on the inner wall of the ferrule, and the latch tooth is used to be inserted into the first slot and the second slot at the same time.

2. The quick-release self-locking pipe joint according to claim 1, characterized in that: It also includes a spring, which is sleeved on the outer sleeve nut and causes the clamping sleeve to have a tendency to approach the first clamping groove; A clamping ring is sleeved on the outer circumference of the outer sleeve nut, and the clamping ring is used to prevent the spring from detaching from the outer sleeve nut.

3. The quick-release self-locking pipe joint according to claim 2, characterized in that: The inner wall of the ferrule is in sliding contact with the outer peripheral surface of the clamping ring.

4. The quick-release self-locking pipe joint according to claim 1, characterized in that: A limiting groove is provided on the side wall of the second slot.

5. The quick-release self-locking pipe joint according to claim 1, characterized in that: The latching teeth are adapted to both the first latching slot and the second latching slot.

6. The quick-release self-locking pipe joint according to claim 1, characterized in that: The material of the pipe sleeve is stainless steel.

7. The quick-release self-locking pipe joint according to claim 1, characterized in that: The outer sleeve nut is made of high-temperature alloy or titanium alloy.

8. The quick-release self-locking pipe joint according to claim 2, characterized in that: The material of the spring is high-strength spring steel.

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