CN211779544U

CN211779544U - Expansion piece

Info

Publication number: CN211779544U
Application number: CN202020293507.1U
Authority: CN
Inventors: 吴彦武
Original assignee: Henan Zhong Yue Valve Manufacturing Co ltd
Current assignee: Henan Zhong Yue Valve Manufacturing Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-10-27
Anticipated expiration: 2030-03-11

Abstract

The utility model discloses a telescopic device, which comprises an extension pipe, fixed heads fixedly connected with two ends of the extension pipe and a movable head connected with the fixed heads, wherein the tail part of the fixed head is fixedly connected with an extension pipe port, the inner wall of the fixed head is fixedly connected with the tail part of an inner inserting pipe, and the head part of the inner inserting pipe is externally connected with a connecting pipeline to be tightly attached to the inner wall of the inner inserting pipe; a first sealing ring is arranged on the inner wall of the head part of the fixed head; a space is arranged between the first sealing ring and the inner inserting pipe, and an external pipeline wall is arranged in the space; the periphery of the external pipeline is sleeved with a movable head, the tail part of the movable head is tightly contacted with the head part of the fixed head, the surface of the tail part of the movable head is provided with a screw hole, a bolt is screwed in the screw hole, and the head end of the bolt is tightly attached to the wall of the external connecting pipeline; the device has the advantages of stable connection, difficult disjointing and good sealing effect.

Description

Expansion piece

Technical Field

The utility model relates to a pipeline connecting equipment technical field specifically is a telescopic device.

Background

At present, the most metal pipelines are used for transportation in the aspect of hydraulic engineering, but the tightness of the pipeline can be ensured only by connecting the expansion piece at the joint of the pipeline and the pipeline.

Chinese patent (application number 201821056377.9) discloses a two-sided sleeve pipe expansion bend of steel in 2019, 02, 19, including body, two sets of sealing washer of two sets of clamping rings and both ends play fixed connection's bolt and nut, the left and right sides of body all is provided with the sealing ring, the outside of sealing ring is provided with the clamping ring, the clamping ring compresses tightly the sealing ring, the clamping ring passes through bolt and nut and body fastening connection.

Although the application provides the expansion piece which can be connected with two pipelines, the expansion piece is not provided with a fixing device, and the expansion piece is easy to be disconnected when the impact force in the pipelines is large; this device utilizes extrusion elastic sealing ring to seal, can not guarantee sealed effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a telescopic device possesses the connection stability, is difficult for taking off the festival, and problem among the prior art has been solved to sealed effectual advantage.

In order to achieve the above object, the utility model provides a following technical scheme: a telescopic device comprises an extension pipe, fixed heads fixedly connected to two ends of the extension pipe and a movable head connected with the fixed heads, wherein the tail part of the fixed head is fixedly connected with an extension pipe port, the inner wall of the fixed head is fixedly connected with the tail part of an inner inserting pipe, and the head part of the inner inserting pipe is externally connected with a connecting pipeline and is tightly attached to the inner wall of the inner inserting pipe; a first sealing ring is arranged on the inner wall of the head part of the fixed head; a space is arranged between the first sealing ring and the inner inserting pipe, and an external pipeline wall is arranged in the space; the periphery of the external pipeline is sleeved with a movable head, the tail part of the movable head is in close contact with the head part of the fixed head, a screw hole is formed in the surface of the tail part of the movable head, a bolt is screwed in the screw hole, and the head end of the bolt is tightly attached to the wall of the external connecting pipeline.

Preferably, the movable head tail part and the fixed head periphery are provided with connecting lugs, connecting holes are formed in the surfaces of the connecting lugs, and screws are arranged in the connecting holes in an inserting mode.

Preferably, the outer surface of the first sealing ring is concave, the inner wall of the head of the movable head is provided with a second sealing ring, the outer surface of the second sealing ring is convex, and the first sealing ring and the second sealing ring are meshed with each other.

Preferably, the extension pipe may be bent.

Compared with the prior art, the beneficial effects of the utility model are as follows: the telescopic device can set the extension pipe into a linear type or a bent type, so that the device can meet the requirements of different connection modes; the screw hole is formed in the surface of the movable head, and the position of an external connecting pipeline inside the movable head can be limited by screwing a screw, so that the movable head cannot be disjointed when in use; this device not only is provided with first sealing ring and second sealing ring, and intermeshing between the two, and secondary seal has guaranteed the good seal of this device.

Drawings

Fig. 1 is a schematic view of the overall structure of a telescopic device of the present invention;

fig. 2 is a schematic view of a fixing head of a telescopic device according to the present invention;

FIG. 3 is a schematic cross-sectional view of a fixing head of a telescopic device according to the present invention;

fig. 4 is a schematic view of a movable head of a telescopic device of the present invention;

fig. 5 is a schematic view of a bent extension tube of the telescopic device of the present invention.

The figures are labeled as follows: 1. an extension tube; 2. a fixed head; 3. a movable head; 4. connecting lugs; 5. inserting a tube; 6. a first seal ring; 7. a second seal ring.

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. 1-5, in embodiment 1, a telescopic device includes an extension tube 1, a fixed head 2 fixedly connected to two ends of the extension tube 1, and a movable head 3 connected to the fixed head 2, wherein a port of the extension tube 1 is fixedly connected to a tail portion of the fixed head 2, a tail portion of an inner insertion tube 5 is fixedly connected to an inner wall of the fixed head 2, and a head portion of the inner insertion tube 5 is externally connected to a connection pipe and tightly attached to an inner wall thereof; the inner wall of the head part of the fixed head 2 is provided with a first sealing ring 6; a space is arranged between the first sealing ring 6 and the inner inserting pipe 5, and an external pipeline wall is arranged in the space; the periphery of the external pipeline is sleeved with a movable head 3, the tail of the movable head 3 is in close contact with the head of the fixed head 2, a screw hole is formed in the surface of the tail of the movable head 3, a bolt is screwed in the screw hole, and the head end of the bolt is tightly attached to the wall of the external connecting pipeline.

Embodiment 2, a telescopic device, comprising an extension pipe 1, a fixed head 2 fixedly connected to two ends of the extension pipe 1, and a movable head 3 connected to the fixed head 2, wherein the tail of the fixed head 2 is fixedly connected to a port of the extension pipe 1, the inner wall of the fixed head 2 is fixedly connected to the tail of an inner insertion pipe 5, and the head of the inner insertion pipe 5 is externally connected to a connecting pipeline and tightly attached to the inner wall thereof; the inner wall of the head part of the fixed head 2 is provided with a first sealing ring 6; a space is arranged between the first sealing ring 6 and the inner inserting pipe 5, and an external pipeline wall is arranged in the space; the periphery of the external pipeline is sleeved with a movable head 3, the tail of the movable head 3 is in close contact with the head of the fixed head 2, a screw hole is formed in the surface of the tail of the movable head 3, a bolt is screwed in the screw hole, and the head end of the bolt is tightly attached to the wall of the external connecting pipeline.

The tail of the movable head 3 and the periphery of the head of the fixed head 2 are provided with connecting lugs 4, the surface of each connecting lug 4 is provided with a connecting hole, and screws are arranged in the connecting holes in an inserting mode.

The outer surface of the first sealing ring 6 is arranged to be concave, the inner wall of the head of the movable head 3 is provided with a second sealing ring 7, the outer surface of the second sealing ring 7 is arranged to be convex, and the first sealing ring 6 and the second sealing ring 7 are meshed with each other.

Embodiment 3, a telescopic device, comprising an extension pipe 1, a fixed head 2 fixedly connected to two ends of the extension pipe 1, and a movable head 3 connected to the fixed head 2, wherein the extension pipe 1 may be configured in a bent shape, a tail of the fixed head 2 is fixedly connected to a port of the extension pipe 1, a tail of an inner insertion pipe 5 is fixedly connected to an inner wall of the fixed head 2, and a head of the inner insertion pipe 5 is externally connected to a connection pipe and closely attached to an inner wall thereof; the inner wall of the head part of the fixed head 2 is provided with a first sealing ring 6; a space is arranged between the first sealing ring 6 and the inner inserting pipe 5, and an external pipeline wall is arranged in the space; the periphery of the external pipeline is sleeved with a movable head 3, the tail of the movable head 3 is in close contact with the head of the fixed head 2, a screw hole is formed in the surface of the tail of the movable head 3, a bolt is screwed in the screw hole, and the head end of the bolt is tightly attached to the wall of the external connecting pipeline.

The telescopic device can set the extension pipe 1 into a linear type or a bent type, so that the device can meet the requirements of different connection modes; the device is provided with the screw hole on the surface of the movable head 3, and the position of the external connecting pipeline inside the movable head 3 can be limited by screwing the screw, so that the disconnection can be avoided when the device is used; the device is provided with the first sealing ring 6 and the second sealing ring 7 which are meshed with each other, and the secondary sealing ensures the good tightness of the device.

The working principle is as follows: when the telescopic device is used, one end is connected, the movable head 3 is sleeved on an external connecting pipeline, then the port of the external connecting pipeline is clamped in the interval between the first sealing ring 6 and the inner inserting pipe 5, then the movable head 3 is aligned and connected with the fixed head 2, so that the first sealing ring 6 is meshed with the second sealing ring 7, then the movable head 3 is fixed with the connecting lug 4 of the fixed head 2 by a screw, and the screw is screwed into the screw hole on the surface of the tail part of the movable head 3, so that the screw is contacted with the outer wall of the external connecting pipeline to limit the position of the external connecting pipeline; the other end is connected in the same way.

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. The utility model provides a telescopic device, includes extension pipe, fixed connection at the fixed head at extension pipe both ends, the activity head of being connected with the fixed head, its characterized in that: the tail part of the fixed head is fixedly connected with an extension pipe port, the inner wall of the fixed head is fixedly connected with the tail part of the inner inserting pipe, and the head part of the inner inserting pipe is externally connected with a connecting pipeline and clings to the inner wall of the inner inserting pipe; a first sealing ring is arranged on the inner wall of the head part of the fixed head; a space is arranged between the first sealing ring and the inner inserting pipe, and an external pipeline wall is arranged in the space; the periphery of the external pipeline is sleeved with a movable head, the tail part of the movable head is in close contact with the head part of the fixed head, a screw hole is formed in the surface of the tail part of the movable head, a bolt is screwed in the screw hole, and the head end of the bolt is tightly attached to the wall of the external connecting pipeline.

2. A retractor according to claim 1, wherein: the movable head tail part and the periphery of the fixed head part are provided with connecting lugs, the surfaces of the connecting lugs are provided with connecting holes, and screws are arranged in the connecting holes in an inserting mode.

3. A retractor according to claim 1, wherein: the outer surface of the first sealing ring is arranged to be concave, the inner wall of the head of the movable head is provided with a second sealing ring, the outer surface of the second sealing ring is arranged to be convex, and the first sealing ring and the second sealing ring are meshed with each other.

4. A retractor according to claim 1, wherein: the extension pipe can be arranged to be bent.