Ferrule type loose joint elbow

Abstract

The utility model discloses a clamping sleeve type loose joint elbow, and relates to the technical field of loose joint elbows. Comprising an elbow body and screwed joints, the screwed joints are located at the two ends of the elbow body and fixedly connected with the elbow body, and the loose joint clamping sleeves are arranged on the inner sides of the screwed joints and connected with the screwed joints. By arranging the loose joint clamping sleeve, the outer wall of a pipeline can be sleeved with the loose joint clamping sleeve conveniently, when the pipeline is connected, under the interaction of the nut and the loose joint clamping sleeve, the pipeline can be fixed, meanwhile, the convex block arranged on the outer wall of the fixing shaft is matched with the twisting groove so that the loose joint clamping sleeve can be limited, and the phenomenon that in the process of fixing the pipeline, the pipeline is damaged is avoided. The loose joint clamping sleeve rotates synchronously, and the pipeline can be fixedly mounted and dismounted conveniently under the combined action of the nut, the nut connector and the loose joint clamping sleeve.

Description

TECHNICAL FIELD

[0001] The utility model relates to a field of live joint elbow, specifically to a sleeve type live joint elbow. BACKGROUND

[0002] In modern industry and building and many fields, pipeline system plays a vital role, and the connection between pipelines needs to guarantee sealing, firmness and the convenience of installation.

[0003] Traditional pipeline connection mode such as welding is firm, but has the defects of inconvenient installation, needing professional equipment and personnel operation and being not detachable, and flange connection is relatively bulky and high in cost, and in some occasions such as the pipeline connection of precision instrument, the internal pipeline layout of small equipment and the system needing to carry out pipeline maintenance and reconstruction frequently, a new type of pipeline connecting pipe is urgently needed to meet the demand, and therefore, a new sleeve type live joint elbow is provided. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a sleeve type live joint elbow to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a sleeve type live joint elbow, comprising: an elbow body,

[0006] A threaded joint is located at both ends of the elbow body and is fixedly connected with the elbow body.

[0007] A live joint sleeve is arranged on the inner side of the threaded joint and is connected with the threaded joint.

[0008] As one specific scheme in the technical scheme of the application, the live joint sleeve is composed of a tooth block, an elastic mandrel and a fixed shaft.

[0009] As one specific scheme in the technical scheme of the application, the elastic mandrel and the outer surface of the threaded joint are both provided with threads, and the elastic mandrel and the threaded joint are both screw-connected with a nut.

[0010] As one specific scheme in the technical scheme of the application, the outer wall of the fixed shaft is provided with a plurality of protrusions, one end of the inner wall of the threaded joint is provided with a twisting groove, and the protrusions rotate in the twisting groove.

[0011] As one specific scheme in the technical scheme of the application, the inner side of the fixed shaft is provided with a first annular groove, a first sealing ring is arranged in the first annular groove, and the inner wall of the first sealing ring is connected with a pipeline.

[0012] As a specific scheme of the technical scheme in the application, the inner wall of the threaded joint is provided with a second annular groove, the second annular groove is provided with a second sealing ring, and the inner wall of the threaded joint is further provided with a butt joint, and the butt joint is used for providing an insertion position of the fixing shaft.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The sleeve type loose joint elbow is convenient to be sleeved on the outer wall of the pipeline through the loose sleeve, can fix the pipeline under the interaction of the nut and the loose sleeve, and can limit the loose sleeve through the cooperation of the protrusion on the outer wall of the fixing shaft and the twist groove, so that the synchronous rotation of the loose sleeve in the process of fixing the pipeline is avoided, and the pipeline is convenient to be fixed, installed and disassembled under the joint action of the nut, the nut joint and the loose sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an equal axis side opening state schematic view of the utility model;

[0016] Figure 2 It is an equal axis side closing state schematic view of the utility model;

[0017] Figure 3 It is an equal axis side cross section schematic view of the utility model;

[0018] Figure 4 It is an equal axis side local distribution schematic view of the utility model;

[0019] Figure 5 It is an equal axis side local distribution cross section schematic view of the utility model;

[0020] Figure 6 It is a threaded joint cross section schematic view of the utility model.

[0021] In the drawing: 1, elbow body; 2, nut; 3, loose sleeve; 301, tooth block; 302, elastic mandrel; 303, fixing shaft; 304, protrusion; 305, first annular groove; 4, pipeline; 5, threaded joint; 501, twist groove; 502, second annular groove; 503, butt joint; 6, first sealing ring; 7, second sealing ring. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] It should be noted that similar reference numerals and letters refer to similar items throughout the accompanying drawings, and once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. The electrical components appearing in the text are all connected with the host controller and 220V mains electricity, and the host controller can be a computer or other conventional known device controlled by a computer.

[0024] In the description of the embodiments of the utility model, it should be pointed out that the positions or location relationships indicated by the terms "inner", "outer", "upper", etc. are based on the positions or location relationships shown in the drawings, or the positions or location relationships commonly used when the utility model product is used, which are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated positions or components must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0025] As shown in Figures 1-6 The utility model provides a technical scheme: a card sleeve type loose joint elbow, including elbow body 1, be used for connecting pipeline 4 after water flow, elbow body 1 and threaded joint 5 between fixed connection, threaded joint 5 outer wall is provided with thread, be used for with the internal thread of nut 2 is connected, and the outer diameter of threaded joint 5 is slightly larger than the outer diameter of the both ends of elbow body 1, to be able to make nut 2 on the outer wall of elbow body 1 sliding, simultaneously, nut 2 can also be separated from the knob of threaded joint 5, to make nut 2 and elbow body 1 separate, be convenient for installation and disassembly, threaded joint 5, threaded joint 5 is located at the both ends of elbow body 1, and is fixedly connected with elbow body 1, loose joint card sleeve 3, is arranged in the inner side of threaded joint 5, and loose joint card sleeve 3 is connected with threaded joint 5.

[0026] It should be noted that: the height of nut 2 is greater than that of threaded joint 5, so that after the threaded connection of nut 2 and threaded joint 5, nut 2 can still have a space for threaded connection with loose joint card sleeve 3.

[0027] As shown in Figures 1-6As shown, in the embodiment of the present application, the loose sleeve 3 is composed of the tooth block 301, the elastic core shaft 302 and the fixed shaft 303. The elastic core shaft 302 and the threaded joint 5 are both provided with threads, and are both in threaded connection with the nut 2. The fixed shaft 303 is provided with a plurality of protrusions 304 on the outer wall. The threaded joint 5 is provided with a twisting groove 501 at one end of the inner wall. The protrusions 304 rotate in the twisting groove 501. The fixed shaft 303 is provided with a first annular groove 305 on the inner side. The first annular groove 305 is provided with the first sealing ring 6. The inner wall of the first sealing ring 6 is connected with the pipeline 4. The threaded joint 5 is provided with a second annular groove 502 on the inner wall. The second annular groove 502 is provided with the second sealing ring 7. The threaded joint 5 is further provided with a butt joint 503 on the inner wall. The butt joint 503 is used to provide an insertion position of the fixed shaft 303. Specifically, under the action of the loose sleeve 3, the pipeline 4 can be fixed and limited. The fixed shaft 303 in the loose sleeve 3 is located at the butt joint 503. At this moment, the inner diameter of the fixed shaft 303 is equal to the inner diameter of the threaded joint 5. The second annular groove 502 provided on the threaded joint 5 is provided with the second sealing ring 7, which is used to enhance the sealing between the fixed shaft 303 and the threaded joint 5, so as to avoid water seepage. The twisting groove 501 provided on the inner wall of the top end of the threaded joint 5 is used to limit and guide the fixed shaft 303. The twisting groove 501 provides a movable environment for the protrusions 304. The protrusions 304 on the outer wall of the fixed shaft 303 move along the twisting groove 501 and rotate after moving to the bottom end of the twisting groove 501. The fixed shaft 303 can be limited in the threaded joint 5. At this moment, the bottom end of the elastic core shaft 302 covers the surface of the top end of the threaded joint 5. The elastic core shaft 302 can shield the opening of the twisting groove 501 on the threaded joint 5. The outer diameter of the elastic core shaft 302 is equal to the outer diameter of the threaded joint 5. The threads on the outer wall of the elastic core shaft 302 cooperate with the threads on the outer wall of the threaded joint 5. After the nut 2 is in threaded connection with the threaded joint 5, the nut 2 can continue to rotate, so as to move upward. On the basis that the nut 2 is in threaded connection with the threaded joint 5, the nut 2 is in threaded connection with the outer wall of the elastic core shaft 302. The height of the nut 2 is equal to the common height of the threaded joint 5 and the elastic core shaft 302. The tooth block 301 connected with the top end of the elastic core shaft 302 is used to limit the displacement distance of the nut 2 and fix the pipeline 4. The first annular groove 305 in the inner wall of the fixed shaft 303 is provided with the first sealing ring 6. The first sealing ring 6 is used to increase the sealing between the pipeline 4 and the inner wall of the fixed shaft 303, so as to avoid water seepage.

[0028] As Figures 1-6As shown, in the embodiment of the present application, during the connecting process of the pipe 4, the union sleeve 3 is sleeved on the outer wall of the pipe 4, and the fixing shaft 303 is aligned with the threaded joint 5, at this time, the nut 2 can be installed on the threaded joint 5 from the outside and moved to the elbow body 1 along the threaded joint 5, or the nut 2 can be sleeved on the elbow body 1 at the beginning, the fixing shaft 303 is inserted into the threaded joint 5, during the insertion process, the protrusion 304 moves along the twist groove 501 and rotates at the bottom of the twist groove 501, so that the protrusion 304 is clamped on the inner wall of the threaded joint 5, at this time, the elastic mandrel 302 is in the open state at the offset top end portion, the nut 2 is twisted, the nut 2 moves linearly along the threaded joint 5, when the nut 2 moves to the outer wall of the elastic mandrel 302 and continues to move upward, the offset top end portion of the elastic mandrel 302 will gradually gather, when the surface of one end of the nut 2 contacts the surface of the tooth block 301, the elastic mandrel 302 is in a completely gathered state, thereby fixing the pipe 4, and the rotation direction of the nut 2 which generates the gathering effect on the elastic mandrel 302 is the same as the twist direction of the twist groove 501, therefore, during the rotation process of the nut 2, the protrusion 304 on the fixing shaft 303 will not be limited from the twist groove 501.

[0029] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended embodiments and their equivalents.

Claims

1. A push to connect coupling comprising: The elbow body (1) is characterized in that: The threaded joint (5) is located at both ends of the elbow body (1) and is fixedly connected with the elbow body (1); The live joint sleeve (3) is arranged inside the threaded joint (5), and the live joint sleeve (3) is connected with the threaded joint (5).

2. A push to connect coupling according to claim 1, wherein: The live joint sleeve (3) is composed of a tooth block (301), an elastic core shaft (302), and a fixed shaft (303).

3. A push to connect coupling according to claim 2, wherein: The elastic core shaft (302) and the threaded joint (5) are both provided with threads on the outer surfaces, and the elastic core shaft (302) and the threaded joint (5) are both threadedly connected with the nut (2).

4. A push to connect coupling according to claim 2, wherein: The fixed shaft (303) is provided with a plurality of protrusions (304) on the outer wall, one end of the inner wall of the threaded joint (5) is provided with a twisting groove (501), and the protrusions (304) rotate in the twisting groove (501).

5. A push to connect coupling according to claim 4, wherein: The fixed shaft (303) is provided with a first annular groove (305) on the inner side, the first annular groove (305) is provided with a first sealing ring (6) inside, and the inner wall of the first sealing ring (6) is connected with the pipeline (4).

6. A push to connect coupling according to claim 4 wherein: The inner wall of the threaded joint (5) is provided with a second annular groove (502), the second annular groove (502) is provided with a second sealing ring (7) inside, and the inner wall of the threaded joint (5) is further provided with a butt joint (503), and the butt joint (503) is used to provide an insertion position of the fixed shaft (303).

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