CN217634359U

CN217634359U - Dual-function composite pipe joint

Info

Publication number: CN217634359U
Application number: CN202221175990.9U
Authority: CN
Inventors: 董明
Original assignee: Dalian Xingang Hydraulic Pipe Fitting Co ltd
Current assignee: Dalian Xingang Hydraulic Pipe Fitting Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-10-21
Anticipated expiration: 2032-05-17

Abstract

The utility model discloses a difunctional combined type coupling, concretely relates to coupling technical field, including the joint body, O type rubber seal, extrusion cutting ferrule and squeeze nut, O type rubber seal establishes on the internal wall of joint body, the extrusion cutting ferrule is established in joint body one end, and extrudees cutting ferrule one end and extend into the internal portion that connects, the extrusion cutting ferrule extends into the one end lateral surface that connects in the body and laminates mutually with joint body one end inner wall, the extrusion cutting ferrule is established in O type rubber seal one side, the squeeze nut cover is established in the external side of joint body one end, and extrudees the cutting ferrule and establish inside squeeze nut. The utility model discloses an extrusion cutting ferrule plays the extrusion sealing effect to connecting between the body and the pipe, and O type rubber seal hugs closely and seals in the pipe outer end, combines two kinds of sealed forms together, improves sealed effect.

Description

Dual-function composite pipe joint

Technical Field

The utility model relates to a coupling technical field, the more specifically difunctional combined type coupling that says so.

Background

In fluid transfer and control systems, the most common method of connecting pipes to various components is by using pipe joints that are pressure resistant, tight, and oil and gas tight.

The common welding type pipe joint realizes elastic sealing by the elastic action of an O-shaped rubber ring, the pipe and the pipe joint need to be welded together when in use, the operation is troublesome, and the joint is not suitable for places where fire is not allowed particularly.

The ferrule type pipe joint is a pipe joint which has the advantages of simple operation, convenient use, no need of welding, high pressure resistance and long service life. The cutting edge of the cutting sleeve is used for occluding the outer diameter of the steel pipe and the outer edge of the cutting sleeve is used for extruding and sealing the inner conical surface of the joint, so that the cutting sleeve type pipe joint is particularly suitable for hydraulic pipelines. However, the air tightness of the extrusion seal is poor, pressure can not be always kept in airtight experiments, air mixed in a fluid pipeline is leaked due to the situation, and the phenomenon that the pipe joint leaks slowly in the later period is accompanied. Thus, a dual-function composite pipe joint is provided.

Disclosure of Invention

In order to overcome the above-mentioned defect of prior art, the utility model provides a difunctional combined type coupling plays the extrusion sealing effect to connecting between the body and the pipe through the extrusion cutting ferrule, and O type rubber seal hugs closely and seals in the pipe outer end, combines two kinds of sealed forms together, improves sealed effect.

In order to achieve the above object, the utility model provides a following technical scheme: difunctional combined type coupling, including the joint body, O type rubber seal, extrusion cutting ferrule and squeeze nut, O type rubber seal establishes on the internal wall of joint body, the extrusion cutting ferrule is established in joint body one end, and extrudees cutting ferrule one end and extends into the internal portion that connects, the one end lateral surface that the extrusion cutting ferrule extends into in the joint body laminates with joint body one end inner wall mutually, the extrusion cutting ferrule is established in O type rubber seal one side, the squeeze nut cover is established in the external side of joint body one end, and extrudees the cutting ferrule and establish inside squeeze nut.

In a preferred embodiment, the joint body is internally provided with a first cavity, a second cavity and a third cavity which are communicated with each other in sequence, the inner diameter of the second cavity is larger than that of the first cavity, the inner wall of the joint body is provided with a sealing ring mounting groove, the sealing ring mounting groove is arranged on the outer side of the second cavity and communicated with the second cavity, and the O-shaped rubber sealing ring is mounted inside the sealing ring mounting groove, so that the O-shaped rubber sealing ring can be mounted conveniently.

In a preferred embodiment, the third cavity inner wall is processed into the slope periphery that is 12 contained angles with joint body axial direction, extrude cutting ferrule one end and locate inside the third cavity, and extrude the one end lateral surface that the cutting ferrule is in the third cavity and process into the slope periphery that is 12 contained angles with extrusion cutting ferrule axial direction, third cavity inner wall and extrusion cutting ferrule one end lateral surface phase-match and laminating, extrude the cutting ferrule to play extrusion sealing effect between joint body and the pipe, sealed effect is good.

In a preferred embodiment, communicating first cavity, second cavity, third cavity have been seted up in proper order to extrusion nut inside, first cavity, second cavity, third cavity internal diameter reduce in proper order, joint body one end is established inside first cavity, and the joint body one end outside and first cavity inner wall threaded connection, the laminating of extrusion cutting ferrule other end outside and second cavity inner wall, extrusion nut extrusion cutting ferrule makes the extrusion cutting ferrule play the extrusion sealing effect to between joint body and the pipe.

In a preferred embodiment, one end of the pipe passes through the third cavity and is arranged in the second cavity, and the O-shaped rubber sealing ring, the extrusion clamping sleeve and the extrusion nut are sleeved at the outer end of the pipe.

The utility model discloses a technological effect and advantage:

the utility model discloses insert the pipe and pass the joint body, then will extrude the cutting ferrule cover on the pipe, the extrusion nut cover is on the pipe and screw up on the joint body, extrusion nut extrusion cutting ferrule makes and will extrude cutting ferrule outer end along third cavity inner wall axial displacement embedding pipe outer wall, the extrusion cutting ferrule plays extrusion sealing effect to connecting between the body and the pipe, it is high and make the pipe not pull out to bear the pressure, the O type rubber seal who connects internal portion simultaneously hugs closely in the pipe outer end, O type rubber seal's elastic seal is effectual, especially airtight effect is better, can thoroughly plug up the only dew point that connects the body with the pipe, the utility model discloses combine two kinds of sealing forms together, improve sealed effect.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a view of the joint body structure of the present invention;

fig. 3 is a structural diagram of the extrusion card sleeve of the utility model;

fig. 4 is a structural view of the extrusion nut of the present invention.

The reference signs are: 1, a connector body, 11 a first cavity, 12 a second cavity, 13 a third cavity and 14 sealing ring mounting grooves;

2O rubber seal ring;

3, extruding the cutting sleeve;

4 extruding the nut, 41 a first cavity, 42 a second cavity and 43 a third cavity;

5, a pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a combine two kinds of sealed form dual-functional combined type coupling of design together, including the joint body 1, O type rubber seal 2, extrusion cutting ferrule 3 and extrusion nut 4, O type rubber seal 2 establishes on the 1 inner wall of the joint body, extrusion cutting ferrule 3 is established in the 1 one end of the joint body, and extrudes 3 one end of cutting ferrule and extend into 1 inside the joint body, the one end lateral surface that extrusion cutting ferrule 3 extends into in the joint body 1 laminates with the 1 one end inner wall of the joint body mutually, extrusion cutting ferrule 3 establishes in O type rubber seal 2 one side, 4 covers of extrusion nut are established in the 1 one end outside of the joint body, and extrusion cutting ferrule 3 establishes inside extrusion nut 4.

As shown in fig. 2, a first cavity 11, a second cavity 12 and a third cavity 13 which are communicated with each other are sequentially formed in the joint body 1, the inner diameter of the second cavity 12 is larger than that of the first cavity 11, in order to facilitate installation of the O-shaped rubber seal ring 2, a seal ring installation groove 14 is formed in the inner wall of the joint body 1, the seal ring installation groove 14 is formed in the outer side of the second cavity 12 and communicated with the second cavity 12, the O-shaped rubber seal ring 2 is installed in the seal ring installation groove 14, and the O-shaped rubber seal ring 2 is sleeved on the outer end of the pipe 5; install the joint body 1 on pre-installation equipment, the pipe 5 that will clear up the terminal surface again and remove the burr inserts in the second cavity 12 through the third cavity 13 of joint body 1 and inserts to the end, at this moment O type rubber seal 2 hugs closely in pipe 5 outer end, and O type rubber seal 2's elastic seal is effectual, and especially airtight effect is better, can thoroughly plug up the only dew point of joint body 1 with pipe 5, this is the utility model discloses a sealed form.

As shown in fig. 1-3, the pressing ferrule 3 is disposed on one side of the O-shaped rubber seal ring 2, the pressing ferrule 3 is disposed at the outer end of the pipe 5, one end of the pressing ferrule 3 is disposed inside the third cavity 13, the inner wall of the third cavity 13 is processed into an inclined circumferential surface having an angle of 12 ° with the axial center line of the connector body 1 (as shown in the front plan view of the connector body 1 in fig. 2, an auxiliary line a is made along the inner wall of the third cavity 13, an acute angle between a and B is 12 °), the outer side surface of one end of the pressing ferrule 3 in the third cavity 13 is processed into an inclined circumferential surface having an angle of 12 ° with the axial center line of the pressing ferrule 3 (as shown in the front plan view of the pressing ferrule 3 in fig. 3, an auxiliary line C is made along the outer side of one end of the pressing ferrule 3, and an acute angle between C and D is 12 °), the inner wall of the third cavity 13 is matched with and attached to the outer side surface of one end of the pressing ferrule 3; the extrusion cutting ferrule 3 plays the extrusion sealing effect to between the connector body 1 and the pipe 5, bears the pressure height and makes pipe 5 not pull out and take off, this is the utility model discloses a another kind of sealed form.

As shown in fig. 1 and 4, a first cavity 41, a second cavity 42 and a third cavity 43 which are communicated with each other are sequentially arranged inside the extrusion nut 4, the inner diameters of the first cavity 41, the second cavity 42 and the third cavity 43 are sequentially reduced, one end of the connector body 1 is arranged inside the first cavity 41, the outer side of one end of the connector body 1 is in threaded connection with the inner wall of the first cavity 41, the outer side of the other end of the extrusion clamping sleeve 3 is attached to the inner wall of the second cavity 42, one end of the pipe 5 penetrates through the third cavity 43 and the third cavity 13 and is arranged in the second cavity 12, the extrusion nut 4 is arranged at the outer end of the pipe 5 in a sleeved mode, after the pipe 5 is inserted into the connector body 1, the extrusion nut 4 is sleeved on the pipe 5 and screwed on the connector body 1, and the extrusion nut 4 extrudes the extrusion clamping sleeve 3 to enable the extrusion clamping sleeve 3 to play a role in extrusion sealing between the connector clamping sleeve body 1 and the pipe 5.

The working principle is as follows: during the use, install the joint body 1 on pre-installation equipment, the pipe 5 that will clear up the terminal surface and remove the burr passes through the third cavity 13 of joint body 1 again and inserts in second cavity 12 and insert to the end, then will extrude cutting ferrule 3 cover on pipe 5 and insert in third cavity 13 with the one end that extrudes cutting ferrule 3, then will extrude nut 4 cover on pipe 5 and screw up on joint body 1, extrusion nut 4 extrudes extrusion cutting ferrule 3 makes and extrudes 3 outer ends of cutting ferrule along third cavity 13 inner wall axial displacement embedding pipe 5 outer wall, extrusion cutting ferrule 3 plays extrusion sealing effect to between joint body 1 and the pipe 5, it is high and make pipe 5 not pull out to bear the pressure, O type rubber seal ring 2 that connects body 1 inside simultaneously hugs closely in pipe 5 outer end, O type rubber seal ring 2's elastic seal is effectual, especially airtight effect is better, can thoroughly block up joint body 1 and pipe 5's only dew point, the utility model discloses combine two kinds of sealing forms together, improve sealed effect.

And finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The dual-function composite pipe joint is characterized in that: including joint body (1), O type rubber seal (2), extrusion cutting ferrule (3) and extrusion nut (4), establish on joint body (1) inner wall O type rubber seal (2), establish in joint body (1) one end extrusion cutting ferrule (3), and extrude cutting ferrule (3) one end and extend into and connect inside body (1), one end lateral surface that extrusion cutting ferrule (3) extended into and connect in body (1) is laminated mutually with joint body (1) one end inner wall, establish in O type rubber seal (2) one side extrusion cutting ferrule (3), extrusion nut (4) cover is established in the body (1) one end outside that connects, and extrudees cutting ferrule (3) and establish inside extrusion nut (4).

2. The dual function composite pipe joint according to claim 1, wherein: connect body (1) inside and seted up communicating first cavity (11), second cavity (12), third cavity (13) in proper order, second cavity (12) internal diameter is greater than first cavity (11) internal diameter, connect body (1) inner wall and seted up sealing washer mounting groove (14), and establish in second cavity (12) the outside and communicate with second cavity (12) sealing washer mounting groove (14), O type rubber seal (2) are installed inside sealing washer mounting groove (14).

3. The dual function composite pipe joint of claim 2, wherein: the inner wall of the third cavity (13) is processed into an inclined circumferential surface which forms an included angle of 12 degrees with the axial center line of the joint body (1).

4. The dual function composite pipe joint according to claim 3, wherein: inside third cavity (13) was located to extrusion cutting ferrule (3) one end, and extrusion cutting ferrule (3) are in the one end lateral surface in third cavity (13) and process into and extrude cutting ferrule (3) axial direction and be the slope periphery of 12 contained angles, third cavity (13) inner wall and extrusion cutting ferrule (3) one end lateral surface phase-match and laminating.

5. The dual function composite pipe joint of claim 4, wherein: the extrusion nut (4) is internally provided with a first cavity (41), a second cavity (42) and a third cavity (43) which are communicated in sequence, the inner diameters of the first cavity (41), the second cavity (42) and the third cavity (43) are reduced in sequence, one end of the connector body (1) is arranged in the first cavity (41), the outer side of one end of the connector body (1) is in threaded connection with the inner wall of the first cavity (41), and the outer side of the other end of the extrusion clamping sleeve (3) is attached to the inner wall of the second cavity (42).

6. The dual function composite pipe joint of claim 5, wherein: one end of the pipe (5) penetrates through the third cavity (43) and the third cavity (13) and is arranged in the second cavity (12), and the O-shaped rubber sealing ring (2), the extrusion clamping sleeve (3) and the extrusion nut (4) are all sleeved at the outer end of the pipe (5).