CN211779545U

CN211779545U - Double-flange loose sleeve limiting expansion joint

Info

Publication number: CN211779545U
Application number: CN202020300289.XU
Authority: CN
Inventors: 陈立志; 唐迪
Original assignee: Dalian Water Group Water Resources Co ltd
Current assignee: Dalian Water Group Water Resources Co ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-10-27
Anticipated expiration: 2030-03-12

Abstract

The utility model discloses a double-flange loose sleeve limiting expansion joint, which comprises a body, wherein a first flange and a second flange are respectively arranged at two ends of the body, the first flange is connected with the tail part of a first limiting bolt, the head part of the first limiting bolt passes through a flange and is connected with an expansion pipe, and the expansion pipe is arranged on the surface of the body; the cross section of the flange is trapezoidal, a gap is arranged between the longer side of the flange and the body, and a sealing ring is arranged in the gap; the utility model discloses simple structure, simple to operate, sealed effectual, excellent in use effect, long service life.

Description

Double-flange loose sleeve limiting expansion joint

Technical Field

The utility model relates to an expansion joint technical field specifically is a spacing expansion joint of two flange loose sleeves.

Background

The pipeline compensating joint is a new product for connecting equipment such as a pump, a valve, a pipeline and the like with the pipeline, and the equipment and the pipeline are connected through bolts to form a whole and have certain displacement, so that the pipeline compensating joint can be adjusted according to the field installation size during installation and maintenance, and can transmit axial thrust to the whole pipeline system during work. Therefore, the working efficiency is improved, and certain protection effect is achieved on the pipeline equipment such as pumps and valves.

Chinese patent publication No. 201520163459.3, 29/7/2015, discloses a double-flange limit expansion joint, which comprises a body, a quincunx gland, a limit screw, a limit nut, a limit ring,

The limiting telescopic pipe and the hexagon bolt; the two end parts of the body are respectively provided with a first flange and a second flange, the quincunx gland is arranged on the body and is connected with the first flange through a hexagon bolt; the limiting ring is sleeved on the body, the limiting screw is arranged on the limiting ring through a through hole in the quincunx gland, one end of the limiting screw is connected with the first flange, a limiting nut is arranged at one side of the other end of the limiting screw close to the quincunx gland, and a limiting telescopic pipe is arranged at one side of the other end of the limiting screw close to the second flange; the device has poor tightness.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spacing expansion joint of two flange loose sleeves possesses simple structure, simple to operate, sealed effectual, excellent in use effect, long service life's advantage, has solved the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a double-flange loose sleeve limiting expansion joint comprises a body, wherein a first flange and a second flange are respectively arranged at two ends of the body, the first flange is connected with the tail part of a first limiting bolt, the head part of the first limiting bolt penetrates through a flange and is connected with an expansion pipe, and the expansion pipe is arranged on the surface of the body; the cross section of the pressing flange is trapezoidal, a gap is arranged between the longer side of the pressing flange and the body, and a sealing ring is arranged in the gap.

Preferably, a filling hole is formed at the joint of the pressing flange and the body, and a sealing filling column is arranged in the filling hole.

Preferably, the sealing filling column is in a T shape and comprises a transverse part and a vertical part, the head end of the vertical part is connected with the middle position of the transverse part, and the tail section of the vertical part is an inclined plane.

Preferably, the vertical part of the sealing column is internally provided with a metal layer, and the outer side of the metal layer surrounds the rubber layer.

Preferably, the opposite side of the body is provided with a second limiting bolt.

Compared with the prior art, the beneficial effects of the utility model are as follows: this spacing expansion joint of two flange loose sleeves, simple structure, simple to operate, sealed effectual, excellent in use effect, long service life.

Drawings

Fig. 1 is a schematic view of the overall structure of a double-flange loose-sleeve limiting expansion joint of the present invention;

fig. 2 is a partially enlarged schematic view of a double-flange loose tube spacing expansion joint of the present invention;

fig. 3 is a schematic view of a sealing column of the double-flange loose sleeve spacing expansion joint of the present invention.

The figures are labeled as follows: 1. a body; 2. pressing blue; 3. a telescopic pipe; 4. a seal ring; 5. a first limit bolt; 6. a second limit bolt; 7. sealing the packed column; 8. a rubber layer; 9. a metal layer; 10. a first flange; 11. a second flange.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a double-flange loose-sleeve limiting expansion joint comprises a body 1, wherein a first flange 10 and a second flange 11 are respectively arranged at two ends of the body 1, the first flange 10 is connected with the tail part of a first limiting bolt 5, the head part of the first limiting bolt 5 penetrates through a flange 2 to be connected with an expansion pipe 3, and the expansion pipe 3 is arranged on the surface of the body 1; the cross section of the pressing flange 2 is trapezoidal, a gap is arranged between the longer side of the pressing flange and the body 1, and a sealing ring 4 is arranged in the gap.

And a filling hole is formed at the joint of the pressing flange 2 and the body 1, and a sealing filling column 7 is arranged in the filling hole.

The sealing filling column 7 is in a T shape and comprises a transverse part and a vertical part, the head end of the vertical part is connected with the middle position of the transverse part, and the tail section of the vertical part is an inclined plane.

The vertical part of the sealing filling column 7 is internally provided with a metal layer 9, and the outer side of the metal layer 9 is surrounded by a rubber layer 8.

And a second limiting bolt 6 is arranged on the opposite side of the body 1.

The double-flange loose-sleeve limiting expansion joint is suitable for being connected with flanges on two sides, the connecting length of two ends of a product and the flanges is adjusted during installation, the flange 2 is screwed in sequence, and the first limiting bolt 5 and the second limiting bolt 6 are adjusted, so that a pipeline can freely expand and contract within an expansion amount range, and the safe operation of the pipeline is ensured. The utility model discloses a flexible joint simple structure, simple to operate, sealed effectual, excellent in use effect, long service life.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A double-flange loose sleeve limiting expansion joint comprises a body, wherein a first flange and a second flange are respectively arranged at two ends of the body, the first flange is connected with the tail part of a first limiting bolt, the head part of the first limiting bolt penetrates through a flange and is connected with an expansion pipe, and the expansion pipe is arranged on the surface of the body; the method is characterized in that: the cross section of the pressing flange is trapezoidal, a gap is arranged between the longer side of the pressing flange and the body, and a sealing ring is arranged in the gap.

2. The double-flange loose tube spacing expansion joint of claim 1, wherein: and a filling hole is formed at the joint of the pressing flange and the body, and a sealing filling column is arranged in the filling hole.

3. The double-flange loose tube spacing expansion joint of claim 2, wherein: the sealing filling column is in a T shape and comprises a transverse part and a vertical part, the head end of the vertical part is connected with the middle position of the transverse part, and the tail section of the vertical part is an inclined plane.

4. The double-flange loose tube spacing expansion joint of claim 2, wherein: a metal layer is arranged in the vertical part of the sealing filling column, and the rubber layer is surrounded on the outer side of the metal layer.

5. The double-flange loose tube spacing expansion joint of claim 1, wherein: and a second limiting bolt is arranged on the opposite side of the body.