CN210661742U

CN210661742U - Integrated pipe joint

Info

Publication number: CN210661742U
Application number: CN201921768037.3U
Authority: CN
Inventors: 王利平; 张向美; 明文海; 赵权利; 陆军; 吕晓琳
Original assignee: Xi'an Sitong Pipe Industry Co ltd
Current assignee: Xi'an Sitong Pipe Industry Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-06-02
Anticipated expiration: 2029-10-21

Abstract

The utility model particularly relates to an integral type coupling. The problem that the butt joint of an external thread core butt joint end and a flat head core butt joint end is easy to leak in the prior art is solved. The utility model comprises a core tube and a sleeve; the core pipe is of an integrated structure, and an annular groove is formed in the outer surface of the middle of the core pipe; the two sleeves are respectively sleeved at the two ends of the core pipe; and a space for installing the pipe to be connected is formed between the inner wall of the sleeve and the outer wall of the core pipe. One end of the sleeve, which is close to the middle of the core pipe, is fixedly connected with the core pipe. The utility model discloses an integral type coupling will have the outer silk core and the plain end core of withholding formula coupling now to synthesize into the core pipe of integral type, has saved the connection of nut, consequently, has simplified the part and the connection technology of joint, has reduced the leakage potential safety hazard of pipeline.

Description

Integrated pipe joint

Technical Field

The utility model relates to a coupling, concretely relates to integral type coupling.

Background

The pipe joint is a device frequently used in the industry, as shown in fig. 1, the existing withhold pipe joint mainly comprises an external thread core 1, a flat head core 2, a nut 3 and two withhold sleeves 4; the one end of outer silk core 1 and the butt joint of the one end of flat head core 2 to through nut 3 or flange joint, the other end of outer silk core 1 and the other end of flat head core 2 insert respectively two treat inside the takeover material, two withhold the sleeve 4 and set up in treating the takeover material outside, withhold the sleeve 4 through machinery and will treat that the takeover material sticiss between withhold sleeve 4 and outer silk core 1 and withhold sleeve 4 and flat head core 2, realize the pipe connection from this.

No matter the nut connection or the flange connection is adopted, the connection process is complicated, and the problems of loosening of threads, aging of a sealing ring and the like can occur easily at the butt joint of the outer thread core 1 and the flat head core 2 along with the lengthening of time, and the pipeline leakage accounts for a large part of potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the butt joint of the external thread core butt joint end and the flat head core butt joint end existing in the prior art is easy to leak, and providing an integral pipe joint.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model discloses an integral type coupling, its special character lies in: comprises a core tube and a sleeve;

the core pipe is of an integrated structure, and an annular groove is formed in the outer surface of the middle of the core pipe;

the two sleeves are respectively sleeved at the two ends of the core pipe;

and a space for installing the pipe to be connected is formed between the inner wall of the sleeve and the outer wall of the core pipe.

Furthermore, one end of the sleeve, which is close to the middle of the core pipe, is fixedly connected with the core pipe.

Furthermore, a step-shaped bulge is arranged in the middle of the core pipe, steps are arranged at two ends of the step-shaped bulge, and the steps sequentially comprise a highest step, a middle step and a lowest step;

the annular groove is arranged in the middle of the step-shaped bulge.

Further, the sleeve is fixedly connected with the core tube through a conical connecting cylinder;

the large end of the conical connecting cylinder is connected with the sleeve, and the small end of the conical connecting cylinder is connected with the middle step of the step-shaped bulge;

further, the taper connecting cylinder and the sleeve are of an integral structure.

Furthermore, teeth are arranged on the outer surfaces of two ends of the core pipe;

the inner wall of the sleeve is provided with teeth.

Further, the sleeve is welded or in threaded connection with the core tube.

The utility model has the advantages that:

1. the utility model discloses an integral type coupling will have the outer silk core and the plain end core of withholding formula coupling now to synthesize into the core pipe of integral type, has saved the connection of nut, consequently, has simplified the part and the connection technology of joint, has reduced the leakage potential safety hazard of pipeline.

2. The utility model discloses also with two sleeves respectively with the both ends fixed connection of core pipe, further simplified the part and the connection technology that connect.

3. The utility model discloses set up the annular groove at the core pipe middle part, cooperate with the annular groove through the fastening ka tai on the draw equipment when carrying out mechanical withholding, can make the core pipe can not scurry the position.

4. The utility model discloses it is protruding to have set up the step form in the middle part of the core pipe, has increased the intensity at core pipe middle part, and simultaneously, the bellied minimum step of step form can be treated and taken over the material and insert length and carry on spacingly, and middle step can carry on spacingly to the tip of toper connecting cylinder when carrying out mechanical withhold, and then restricts whole sleeve extension direction.

5. The utility model discloses a toper connecting cylinder makes sleeve and core union coupling, and the length of adjustment toper connecting cylinder can adapt to treating of different wall thicknesses and connect the tubular product.

6. The utility model discloses a sleeve inner wall and core pipe both ends outer wall all are provided with tooth, frictional force when multiplicable machinery is withheld.

Drawings

Fig. 1 is a sectional view of a conventional press-fit type pipe joint;

fig. 2 is a sectional view of the one-piece pipe joint in the present embodiment;

fig. 3 is a sectional view of the present embodiment when the attaching and detaching operation is performed.

In the figure, the position of the upper end of the main shaft,

1-external thread core, 2-flat head core, 3-nut and 4-buckling sleeve;

5-core tube, 51-annular groove, 52-step-shaped protrusion, 6-sleeve, 7-to-be-connected tube, 8-tapered connecting cylinder, 9-pipe shrinking device, 91-fastening clamping table, 92-pipe clamping mold and 93-buckling mold.

Detailed Description

To make the objects, advantages and features of the present invention clearer, the present invention provides an integral pipe joint, which is described in detail with reference to the accompanying drawings and embodiments. The advantages and features of the present invention will become more apparent from the following detailed description. It should be noted that: the drawings are in a very simplified form and are not to precise scale, and are provided solely for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention; second, the structures shown in the drawings are often part of actual structures.

The utility model discloses integral type coupling, its theory of operation does: the outer thread core, the flat head core and the two sleeves of the existing buckling-pressing type pipe joint are all arranged into an integral structure, so that the connection process is simplified, and the potential safety hazard of leakage is reduced.

Example (b):

the utility model relates to an integral type coupling's structure as follows:

as shown in fig. 2, comprises a core tube 5 and a sleeve 6;

the core tube 5 is of an integrated structure, and the outer surface of the middle part of the core tube 5 is provided with a step-shaped bulge 52 so as to enhance the strength of the middle part of the core tube 5; the step-shaped protrusion 52 is provided with steps at both ends thereof, and the steps include a lowest step, a middle step and a highest step; the outer surface of the middle part of the step-shaped bulge 52 is provided with an annular groove 51; the annular groove 51 is used for embedding a fastening clamping table on a pipe clamping mould of the pipe reducing equipment into the annular groove 51 when mechanical buckling is carried out, so that the pipe joint is prevented from moving back and forth;

the two sleeves 6 are respectively connected with the two ends of the core tube 5 through the conical connecting cylinders 8, the large ends of the conical connecting cylinders 8 are connected with the sleeves 6, and the small ends of the conical connecting cylinders are connected with the middle steps of the step-shaped bulges 52; the tapered connecting cylinder 8 and the sleeve 6 are of an integral structure. Therefore, the lowest step of the step-shaped bulge 52 can limit the insertion length of the pipe 7 to be connected, and the middle step can limit the extension direction of the conical connecting cylinder 8 during mechanical buckling. The distance between the inner wall of the sleeve 6 and the outer wall of the core tube 5 is more than or equal to the wall thickness of the pipe material 7 to be connected; so that the material 7 to be jointed can be easily inserted between the sleeve 6 and the core tube 5.

The outer walls of the two ends of the core pipe 5 and the inner wall of the sleeve 6 are provided with teeth; this increases the frictional force during mechanical crimping.

The working process of the utility model is as follows:

the integral pipe joint is placed at a corresponding working position of the pipe contracting device 9, the pipe contracting device 9 comprises two oil cylinders which are arranged in parallel, piston ends of the two oil cylinders are sleeved with a pipe clamping die 92 and a buckling die 93, a fastening clamping table 91 is arranged on the pipe clamping die 92, a conical hole is arranged on the buckling die 93, a piston is pulled, the buckling die 93 slides on the sleeve 6, and the sleeve 9 is extruded through the conical hole on the buckling die 93 to realize telescopic buckling.

Therefore, when the integrated pipe joint is placed on the pipe reducing device 9, the fastening clamping table 91 on the pipe clamping die of the pipe reducing device 9 is embedded into the annular groove 51 of the core pipe 5, the integrated pipe joint is fastened immovably, the pipe material 7 to be connected is inserted between the sleeve 6 and the core pipe 5, the pipe reducing device 9 is started, the pipe reducing die moves axially, the sleeve 6 is extruded, the sleeve 6 deforms, the pipe material 7 to be connected is pressed between the sleeve 6 and the core pipe 5, and a pipeline assembly is formed.

Claims

1. An integral type coupling, its characterized in that: comprises a core tube (5) and a sleeve (6);

the core pipe (5) is of an integrated structure, and an annular groove (51) is formed in the outer surface of the middle of the core pipe (5);

the two sleeves (6) are sleeved at two ends of the core pipe (5) respectively;

and a space for installing the pipe to be connected is formed between the inner wall of the sleeve (6) and the outer wall of the core pipe (5).

2. The one-piece pipe fitting according to claim 1, wherein:

one end of the sleeve (6) close to the middle part of the core pipe (5) is fixedly connected with the core pipe (5).

3. The one-piece pipe joint according to claim 1 or 2, wherein:

a step-shaped bulge (52) is arranged in the middle of the core tube (5), steps are arranged at two ends of the step-shaped bulge (52), and the steps sequentially comprise a highest step, a middle step and a lowest step;

the annular groove (51) is arranged in the middle of the step-shaped bulge (52).

4. The one-piece pipe fitting according to claim 3, wherein:

the sleeve (6) is fixedly connected with the core tube (5) through a conical connecting cylinder (8);

the large end of the conical connecting cylinder (8) is connected with the sleeve (6), and the small end is connected with the middle step of the step-shaped bulge (52).

5. The one-piece pipe fitting according to claim 4, wherein:

the conical connecting cylinder (8) and the sleeve (6) are of an integrated structure.

6. The one-piece pipe fitting according to claim 5, wherein:

teeth are arranged on the outer walls of the two ends of the core pipe (5);

the inner wall of the sleeve (6) is provided with teeth.

7. The one-piece pipe fitting according to claim 2, wherein:

the sleeve (6) is welded or in threaded connection with the core tube (5).