CN209892894U - Metal buckling and pressing type connecting assembly for pipe body connection - Google Patents

Abstract

The utility model discloses a metal crimping type connection assembly for pipe body connection, which comprises a metal lined connecting piece, a reinforcing sleeve, a crimping locking sleeve and a connecting sleeve, and the ends of the two pipe bodies to be connected are processed It has a trumpet-shaped structure, and the lining metal connecting piece is a double-cone cylindrical structure; the outer surface of the lining metal connecting piece is machined with a sealing concave-convex groove; one section of the reinforced sleeve covers the trumpet-shaped structure, and the other section covers the tube body A section of the inner surface of the reinforcing sleeve covering the pipe body is processed with anti-slip inverted teeth, the connecting sleeve covers the connection between the ends of the two pipe bodies to be connected, and the inner surface of the connecting sleeve is processed with internal threads; withholding the locking sleeve The utility model is sleeved on the outside of the reinforcement sleeve, and includes a cylindrical sleeve segment and a hexagonal sleeve segment. The outer surface of the cylindrical sleeve segment is processed with an external thread, and the inner surface of the cylindrical sleeve segment is a conical surface. The utility model has reasonable structural design, good effect on the connection between the pipe bodies, high tensile strength at the connection, and is suitable for pipeline transmission with high pressure.

Description

A metal crimp connection assembly for pipe body connection

technical field

The utility model belongs to the technical field of pipeline connectors, in particular to a metal crimping type connecting component used for connecting a pipe body.

Background technique

The pipe body connector is a connecting device for connecting pipe fittings. It is used to tighten the connection between the butt pipe joints. Generally, the joints have gaskets, rubber, silica gel and tetrafluoroethylene. It has good performance, high sealing and easy installation.

The traditional pipe body connection is connected by a clamp. The clamp structure is single. It usually consists of an upper hoop body and a lower hoop body. The upper hoop body and the lower hoop body are locked and fixed by bolts. The way of fixing is poor, especially for the connection of high-pressure pipelines. Usually, a large amount of liquid will flow through the pipeline of the pipe body, which will easily cause the thermal expansion and contraction of the pipe body, which will easily lead to the loosening of the bolts, which will make the pipeline connection loosely sealed, resulting in the leakage of liquid in the pipeline. condition, and security is also poor.

Utility model content

In order to solve the problems of the prior art, the utility model provides a metal crimping connection assembly for pipe body connection, which includes a metal lined connecting piece, a reinforcing sleeve, a crimping locking sleeve and a connecting sleeve, which are to be connected. Both ends of the two pipe bodies are processed into a horn-like structure, and the metal lining connector is a double-cone cylindrical structure with a small outer diameter at both ends and a large outer diameter in the middle; the inner surface of the lined metal connector is smooth, and the outer surface is smooth. A sealing concave-convex groove is processed; the outer surface of the lining metal connecting piece can fit with the inner surface of the horn-shaped structure, and the outer part of the horn-shaped structure is sheathed with the reinforcement sleeve; a section of the reinforcement sleeve covers the In the horn-shaped structure, the other section is covered on the pipe body; the inner surface of a section of the reinforcing sleeve covering the pipe body is machined with anti-slip inverted teeth, and the connecting sleeve covers the connection between the ends of the two pipe bodies to be connected. , the inner surface of the connecting sleeve is processed with internal threads; the withholding and locking sleeve is sleeved on the outside of the reinforcing sleeve, and includes a cylindrical sleeve section and a hexagonal sleeve section. The cylindrical sleeve section and the hexagonal The sleeve segment is an integral structure, the outer surface of the cylindrical sleeve segment is processed with an external thread, so that the withholding locking sleeve can be fitted in the connecting sleeve through the thread, and the inner surface of the cylindrical sleeve segment is a conical surface, The crimping and locking sleeve is fitted in the connecting sleeve so that the tapered surface is pressed against the reinforcing sleeve.

Further, the sealing concave-convex groove is formed by processing a plurality of groove rings on the surface of the lining metal connector, the axis line of the groove ring coincides with the axis line of the lining metal connector, and each groove ring Arranged along the extension direction of the axis line of the lined metal connector.

Further, the cross section of the outer surface of the connecting sleeve is in a hexagonal structure.

Further, a section of the inner surface of the reinforced sleeve covering the trumpet-shaped structure is also processed with anti-slip inverted teeth.

It can be seen from the above technical solutions that the advantages of the utility model are: the utility model has reasonable structural design, good connection effect between pipe bodies, high tensile strength at the connection, and is suitable for pipeline transmission with high pressure. In addition, the connecting assembly of the present invention can well achieve the sealing of the joint, and can also ensure good sealing performance by tightening the tightening degree of the locking sleeve when thermal expansion and cold contraction occur.

Description of drawings

Fig. 1 is the structural representation of the pipe body joint;

Figure 2 is a schematic structural diagram of a metal-lined connector;

FIG. 3 is a schematic structural diagram of a crimping and locking sleeve.

Detailed ways

As shown in FIGS. 1 to 3 , a metal crimping connection assembly for pipe body connection includes a metal lined connecting piece 1 , a reinforcing sleeve 2 , a crimping locking sleeve 3 and a connecting sleeve 4 . In order to ensure a certain strength, the lining metal connecting piece 1, the reinforcing sleeve 2, the withholding locking sleeve 3 and the connecting sleeve 4 can be made of stainless steel (such as martensitic stainless steel) or other steel materials. The ends of the two pipe bodies 5 to be connected are both processed into a trumpet-shaped structure 6 . The lining metal connector 1 is a double-cone cylindrical structure with a small outer diameter at both ends and a large outer diameter in the middle, as shown in FIG. 2 . The inner surface of the lined metal connector 1 is smooth, which reduces the resistance of fluid flowing through the pipeline; the outer surface is machined with a sealing concave-convex groove 7, and the sealing concave-convex groove 7 is formed by machining a number of groove rings 11 on the surface of the lined metal connector , the axis line of the groove ring 11 coincides with the axis line of the lining metal connector 1, and each groove ring is arranged along the extending direction of the axis line of the lining metal connector. The outer surface of the lined metal connector 1 can fit with the inner surface of the horn-shaped structure 6. When the horn-shaped structure 6 is pressed against the sealing concave-convex groove 7, a certain extrusion deformation occurs, which has a good sealing effect and prevents fluid Seepage from the joint between the pipe body and the lining metal connector 1. A reinforcement sleeve 2 is sheathed on the outside of the flared structure 6 . One section of the reinforcing sleeve 2 covers the trumpet-shaped structure 6 , and the other section covers the tube body 5 . A section of the inner surface of the reinforcing sleeve 2 covering the pipe body is machined with anti-slip inverse teeth 12 . The connecting sleeve 4 covers the connection between the ends of the two pipes to be connected, and the inner surface of the connecting sleeve is processed with internal threads. In order to improve the convenience of installation, the outer surface of the connecting sleeve has a hexagonal structure, which is convenient for wrenches. focus. The crimping and locking sleeve 3 is sleeved on the outside of the reinforcing sleeve 2, and includes a cylindrical sleeve section 8 and a hexagonal sleeve section 9, and the cylindrical sleeve section 8 and the hexagonal sleeve section 9 are integrally formed. The outer surface of the cylindrical sleeve section 8 is processed with positive and negative external threads, so that the crimping and locking sleeve can be screwed into the connecting sleeve 4. The inner surface of the cylindrical sleeve section 8 is a tapered surface 10, which is crimped and locked. When the sleeve 3 is fitted into the connecting sleeve 4 , the conical surface 10 is pressed against the reinforcement sleeve 2 .

When connecting, firstly attach the trumpet-shaped structure 6 at the end of the pipe body 5 to be connected on the outer surface of the lining metal connector 1; The barrel 2 is fitted with a section of the tube body and a section of the horn-shaped structure 6; a section of the reinforcement sleeve 2 covering the tube body is pressed with a press so that the reinforcement sleeve hugs the tube body, and the anti-slip inverse teeth 12 fasten the tube body; The crimping and locking sleeve 3 is sleeved on the reinforcing sleeve 2 so that the tapered surface 10 fits the reinforcing sleeve; then the connecting sleeve 4 is screwed on the crimping and locking sleeve 3; similarly, the other side to be connected is The pipe body 5 is respectively sheathed with a reinforcing sleeve 2 and a withholding locking sleeve 3, and the reinforcing sleeve is pressed to hold the pipe body tightly. On the outer surface of the side, the crimping and locking sleeve 3 is screwed into the connecting sleeve 4; as the crimping and locking sleeves 3 on both sides are tightened, the tapered surface 10 gradually presses the reinforcing sleeve, thereby making the horn-shaped structure 6 press tightly Lining metal connector 1, the inner surface of the horn-shaped structure 6 presses and seals the concave-convex groove 7, and a certain extrusion deformation occurs, which has a good sealing effect and prevents fluid from seeping from the joint between the pipe body and the lining metal connector 1. out. When the tube body is deformed greatly due to long-term use or thermal expansion and contraction, you can continue to tighten the withholding locking sleeves 3 on both sides to increase the pressing force of the horn-shaped structure 6 and the lining metal connector 1 to ensure long-term durability. Sealing and tensile resistance.

The technical solutions provided by the present utility model have been introduced in detail above. For those skilled in the art, according to the idea of the embodiments of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the above , the content of this specification should not be construed as a limitation to the present invention.

Claims (4)

1. A metal crimping connection assembly for pipe body connection, characterized in that it comprises a metal lining connector, a reinforcing sleeve, a crimping locking sleeve and a connecting sleeve, and the ends of the two pipe bodies to be connected are both It is processed into a trumpet-shaped structure, and the lining metal connector is a double-cone cylindrical structure with a small outer diameter at both ends and a large outer diameter in the middle; the inner surface of the lining metal connector is smooth, and the outer surface is processed with sealing concave-convex grooves; The outer surface of the lining metal connecting piece can fit with the inner surface of the trumpet-shaped structure, and the outer part of the trumpet-shaped structure is sheathed with the reinforcement sleeve; a section of the reinforcement sleeve covers the trumpet-shaped structure, and the other section Covered on the pipe body; a section of the inner surface of the reinforcing sleeve covering the pipe body is processed with anti-slip inverted teeth, the connecting sleeve covers the connection between the ends of the two pipe bodies to be connected, and the inner surface of the connecting sleeve is Processed with internal threads; the withholding and locking sleeve is sleeved on the outside of the reinforcing sleeve, and includes a cylindrical sleeve segment and a hexagonal sleeve segment, and the cylindrical sleeve segment and the hexagonal sleeve segment are integral structures, The outer surface of the cylindrical sleeve section is processed with an external thread, so that the crimping and locking sleeve can be fitted in the connecting sleeve through the thread, and the inner surface of the cylindrical sleeve section is a conical surface, and the crimping and locking sleeve is fitted in the connecting sleeve. In the connecting sleeve, the conical surface is pressed against the reinforcing sleeve. 2 . A metal crimping connection assembly for pipe body connection according to claim 1 , wherein the sealing concave-convex groove is formed by machining a plurality of groove rings on the surface of the lining metal connecting piece, and the concave-convex groove is formed. 3 . The axis line of the groove ring coincides with the axis line of the metal lining connecting piece, and the groove rings are arranged along the extending direction of the axis line of the metal lining connecting piece. 3 . The metal crimping connection assembly for pipe body connection according to claim 1 , wherein the cross section of the outer surface of the connection sleeve is in a hexagonal structure. 4 . 4 . The metal crimping connection assembly for pipe body connection according to claim 1 , wherein a section of the inner surface of the reinforcing sleeve covering the trumpet-shaped structure is also processed with anti-slip back teeth. 5 .

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