CN204829008U - Warp and compress tightly clamp formula coupling - Google Patents

Abstract

The utility model discloses a deformed compression clamp type pipe joint, which comprises an outer shell and a sealing device, the outer shell is composed of a first half-ring body and a second half-ring body; the sealing device is composed of a ring frame body, a pressure ring and a sealing ring; the pressing ring is movably sleeved on the ring frame body, the sealing ring is arranged at the corner of the inner ring of the pressure ring, and the end of the ring frame body is offset against the sealing ring; the application provides a simple structure, It is a large-diameter deformation compression clamp type pipe joint with convenient installation, good sealing performance and stable firmness.

Description

A deformed compression clamp type pipe joint

technical field

The invention relates to a pipeline conveying system, in particular to a clamp-type pipe joint with a relatively large diameter.

Background technique

In large-scale compressed air or fluid pipeline systems, it is usually necessary to use larger diameter delivery pipelines in conjunction with small diameter delivery pipelines. Small pipe joints can be used for small diameter pipes, but this type of pipe joint is not suitable For pipelines with larger diameters, the connection strength cannot meet the requirements of pipelines with larger diameters.

For the connection devices of larger diameter pipelines, the flange connection is generally used at present, which needs to be welded on site and then leak tested. If the weld has welding defects such as slag inclusion, it needs to be reworked, which has higher requirements for the on-site installation workers. The installation efficiency is low, and it is not easy to disassemble; in the prior art, another commonly used pipeline connection device is composed of an outer shell and a sealing device, and the sealing device is composed of a ring frame, two compression rings and two "O"-shaped sealing rings ,Through the action of the annular arc surface, the annular inclined surface or the third annular inclined surface, the "O"-shaped sealing ring protrudes inward, so that the "O"-shaped sealing ring is in close contact with the outer wall of the fluid delivery pipeline, and the sealing connection and positioning of the pipeline are realized. It has the problems of complicated structure and high cost.

Utility model content

Aiming at the problems existing in the prior art, the present application provides a large-diameter clamp-type pipe joint with good sealing effect, low cost and stable performance. The specific technical scheme is as follows.

The application provides a deformed compression clamp type pipe joint, including an outer shell and a sealing device, the outer shell is composed of a first semi-annular body (1) and a second semi-annular body (2), the first semi-annular body (1 ) and the second semi-annular body (2) are connected by locking members, and the inner sides of the first semi-annular body (1) and the second semi-annular body (2) are respectively provided with semi-annular installation grooves (103), and the two half-annular The ring body is closed to form an annular installation groove, and the sealing device is arranged in the annular installation groove. One side of the semi-annular installation groove (103) is provided with an annular slope (102) and a clamping groove (101), and the other side is provided with a positioning protrusion platform (105); the sealing device is composed of an annular frame body (3), a pressure ring (4) and a sealing ring (5); the middle outer end of the annular frame body (3) is provided with a limiting boss (31) , a limit groove (32) is formed between the limit boss (31) and the end of the ring frame body, and the pressure ring (4) is movably sleeved on the ring frame body (3); the pressure ring (4) The front section is U-shaped, the middle part of the pressure ring (4) is provided with a mounting hole (41), the shoulder is provided with a first annular slope (42), and the sealing ring (5) is arranged on the inner ring of the pressure ring (4). At the corner, the end of the ring frame body (3) is against the sealing ring (5); and, at the corner of the inner ring of the pressure ring (4), an annular arc surface or an annular slope (43) is excessively arranged, or the ring frame The inner side of the end of the body (3) is provided with a second annular slope (33), and the inner diameter of the sealing ring (5) is smaller than the inner diameter of the mounting hole (41).

Preferably, the first annular slope (42) of the pressure ring (4) in the present application is parallel to the annular slopes (102) of the first half-ring body (1) and the second half-ring body (2).

The number of sealing rings (5) in this application is at least one, preferably a multiple of 2. When there are multiple sealing rings, preferably, a sealing retaining ring is provided between the sealing rings to reduce the impact of fluid on the sealing rings and prolong the service life of the sealing rings.

Preferably, the locking members described in this application are bolts and nuts.

The clamping groove (101) described in this application is a convex groove or a groove.

The pipe joints described in this application are single-head pipe joints or double-head pipe joints.

Beneficial effects: the application provides a pipe joint with simple structure, convenient installation, good sealing performance and firm connection.

Description of drawings

Fig. 1 Explosion structure diagram of deformed compression clamp type pipe joint;

Figure 2 is a cross-sectional view of a deformed compression clamp type pipe joint;

Figure 3 is a cross-sectional view of a deformed compression clamp type pipe joint;

Figure 4 is a cross-sectional view of a deformed compression clamp type pipe joint;

In the figure: 1-first semi-annular body, 2-second semi-annular body, 3-annular frame body, 4-pressure ring, 5-sealing ring, 6-pipeline, 7-sealing device, 101-clamping groove, 102-annular bevel, 103-semi-annular installation groove, 105-positioning boss, 31-limiting boss, 32-limiting groove, 33-second annular bevel, 41-installation hole, 42-first annular bevel, 43-annular arc surface or annular bevel.

Detailed ways

The application will be further explained below in conjunction with the accompanying drawings.

Figures 1-4 are structural schematic diagrams of the deformed compression clamp type pipe joint provided by the present application. It can be seen from the figure that the pipe joint shown includes an outer shell and a sealing device 7, and the outer shell of the device consists of a first The half-ring body 1 and the second half-ring body 2 are formed, the first half-ring body 1 and the second half-ring body 2 are connected by locking member bolts and nuts, the first half-ring body 1 and the second half-ring body 2 There are semi-annular installation grooves 103 on the inner side respectively, and the two half-annular bodies are closed to form an annular installation groove. The sealing device is arranged in the annular installation groove. One side of the semi-annular installation groove 103 is provided with an annular slope 102 and a clamping groove 101. The other side is provided with a positioning boss 105, and the clamping groove 101 can be a convex groove or a groove; the sealing device is composed of an annular frame body 3, a pressure ring 4 and a sealing ring 5; The end is provided with a limit boss 31, and a limit groove 32 is formed between the limit boss 31 and the end of the ring frame body, and the pressure ring 4 is movably sleeved on the ring frame body 3; the front section of the pressure ring 4 is "U" shape, the middle part of the pressure ring 4 is provided with a mounting hole 41, the shoulder is provided with a first annular slope 42, the sealing ring 5 is arranged at the corner of the inner ring of the pressure ring 4, the end of the ring frame body 3 and the sealing ring 5 against each other; and, the corner of the inner ring of the pressure ring 4 is provided with an annular arc surface or an annular inclined surface 43, or a second annular inclined surface 33 is provided on the inner side of the end of the ring frame body 3, and the inner diameter of the sealing ring 5 is smaller than the installation The inner diameter of the hole 41.

As shown in FIGS. 3-4 , preferably, the first annular slope 42 is parallel to the annular slopes 102 of the first half-ring body 1 and the second half-ring body 2 .

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the new technical solution and its inventive concept shall be covered by the protection scope of the present utility model.

Claims (7)

1. A deformed compression clamp type pipe joint, including an outer shell and a sealing device, characterized in that the outer shell is composed of a first semi-annular body (1) and a second semi-annular body (2), and the first semi-annular body The body (1) and the second semi-annular body (2) are connected by locking members, and the inner sides of the first semi-annular body (1) and the second semi-annular body (2) are respectively provided with semi-annular mounting grooves (103), The two half-rings are closed to form an annular installation groove, and the sealing device is arranged in the annular installation groove. One side of the half-annular installation groove (103) is provided with an annular slope (102) and a clamping groove (101), and the other side is provided with a There is a positioning boss (105); the sealing device is composed of a ring frame (3), a pressure ring (4) and a sealing ring (5); the middle outer end of the ring frame (3) is provided with a limit boss (31), a limit groove (32) is formed between the limit boss (31) and the end of the ring frame body, and the pressure ring (4) is movably sleeved on the ring frame body (3); the pressure ring ( 4) The front section is "U"-shaped, the middle part of the pressure ring (4) is provided with a mounting hole (41), the shoulder is provided with a first annular slope (42), and the sealing ring (5) is set on the pressure ring (4) At the corner of the inner ring, the end of the ring frame (3) is against the sealing ring (5); and, at the corner of the inner ring of the pressure ring (4), an annular arc surface or an annular slope (43) is provided, or A second annular slope (33) is provided on the inner side of the end of the ring frame body (3), and the inner diameter of the sealing ring (5) is smaller than the inner diameter of the installation hole (41). 2. The deformation compression clamp type pipe joint according to claim 1, characterized in that, the first annular slope (42) of the pressure ring (4) is in contact with the first half ring (1) and the second half The annular slope (102) of the ring body (2) is parallel. 3. The deformation compression clamp type pipe joint according to claim 1, characterized in that the number of the sealing rings (5) is a multiple of 2. 4 . The deformation compression clamp type pipe joint according to claim 3 , wherein a sealing stop ring is provided between the sealing rings. 5 . The deformation compression clamp type pipe joint according to claim 1 , wherein the locking member is a bolt and a nut. 6 . 6. The deformation compression clamp type pipe joint according to claim 1, characterized in that, the clamping groove (101) is a convex groove or a groove. 7. The deformation compression clamp type pipe joint according to claim 1, characterized in that, the pipe joint is a single-end pipe joint or a double-end pipe joint.