CN209725513U - A kind of conduit coupling - Google Patents
A kind of conduit coupling Download PDFInfo
- Publication number
- CN209725513U CN209725513U CN201920239987.0U CN201920239987U CN209725513U CN 209725513 U CN209725513 U CN 209725513U CN 201920239987 U CN201920239987 U CN 201920239987U CN 209725513 U CN209725513 U CN 209725513U
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- China
- Prior art keywords
- snap ring
- locking nut
- pipeline
- port
- pipe fitting
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Abstract
The utility model discloses a kind of conduit coupling, including tube piece, snap ring and locking nut, the snap ring is integrally in circular ring shape, and the fracture for cutting off its circumferencial direction is offered on circular ring shape, in the port opened up on pipeline insertion pipe fitting, locking nut, snap ring is sleeved on the excircle of pipeline, the outer diameter of snap ring is less than the internal diameter of the thread segment of locking nut, snap ring is clipped between the two by locking nut and tube piece, the locking nut is provided with the undergauge section for being used to squeeze snap ring radial contraction that internal diameter is gradually reduced in the back segment of thread segment, threaded connection on the locking nut and port outer wall pipeline so that snap ring radial contraction is fixedly clamped.Conduit coupling structure described in the utility model is simple, compact, and attended operation is convenient, efficient, and anti-pulling and anti-screwing property are good, ensures that good connective stability, connection sealing are good.
Description
Technical field
The utility model relates to pipe fitting interconnection technique field more particularly to a kind of conduit couplings.
Background technique
The connection type of pipeline usually has welded connecting, card pressure connection etc., welded type connection type, construction trouble, weldering
The spot temperature height connect is easy to appear chromium depleted phenomenon, and scene not can be carried out solution treatment again, welding position is made to get rusty easily；Card pressure
Connection structure is usually that one end of a pipeline is first carried out expanding, and flaring is then inserted into the end of another pipeline
In, card pressure processing then is carried out to the insertion overlapping position of two pipelines, but existing card pressure connection structure is difficult when carrying out card pressure
Deformation to ensure two pipelines is synchronous, it is difficult to ensure compactness of two pipelines in card pressure junction in whole circumference, card
Pressure junction is easy to appear gap, and leakproofness is bad, is easy to appear the situation of leakage, and quality of connection is bad.Existing pipeline connects
It is inconvenient to connect mode attended operation, inefficiency, it is difficult to ensure long-acting connective stability and leakproofness.
Utility model content
Technical problem to be solved in the utility model and the technical assignment of proposition are improved to the prior art, are provided
A kind of conduit coupling solves pipeline connection type attended operation inconvenience, inefficiency, it is difficult to ensure long-acting in current technology
The problem of connective stability and leakproofness.
In order to solve the above technical problems, the technical solution of the utility model is:
A kind of conduit coupling, including tube piece, snap ring and locking nut, the snap ring are integrally in circular ring shape, and
The fracture for cutting off its circumferencial direction is offered on circular ring shape, pipeline is inserted into the port opened up on pipe fitting, locking nut, snap ring
It is sleeved on the excircle of pipeline, the outer diameter of snap ring is less than the internal diameter of the thread segment of locking nut, and locking nut and tube piece will
Snap ring is clipped between the two, and the locking nut is used to squeeze snap ring in the back segment of thread segment provided with what internal diameter was gradually reduced
The undergauge section of radial contraction, threaded connection on the locking nut and port outer wall pipeline so that snap ring radial contraction is fixedly clamped.
Conduit coupling structure described in the utility model is simple, compact, and charge and discharge operations are convenient, high-efficient, locking nut with tube body
Part squeezes snap ring using undergauge section while connection, due to having opened up fracture on snap ring, thus in the extruding of undergauge section
Lower snap ring energy radial contraction is fixed pipeline using the frictional force of covering pipeline whole circumference to clamp pipeline, will not be right
Excessive pressure is caused in the part of pipeline wall surface, ensures the integrity of pipeline, effectively improves anti-pulling and anti-screwing property, avoids
Pipeline is axially extracted, and also pipeline is avoided to rotate in a circumferential direction, and improves connective stability, is improved to connect leakproofness.
Further, one end that the snap ring is contacted with undergauge section is provided with tapered slope, tapered slope and undergauge section
Taper fit, it is ensured that snap ring can reliably carry out radial contraction under the action of undergauge section, and pipeline is effectively fixed.
Further, the taper of the undergauge section is 70~80 °.
Further, one end that the snap ring is contacted with undergauge section is spaced apart is equipped with several notches in a circumferential direction,
The snap ring of circular ring shape is divided into an annular claw-type structure by notch, so that snap ring has good elasticity, it can be uniform
It is effective to carry out radial contraction, improve the stability of pipeline connection.
Further, it is additionally provided with the sealing ring being sleeved on pipeline between the snap ring and tube piece, improves connection
Leakproofness.
Further, the annular groove for accommodating sealing ring is provided in the outer end oral area of port on the pipe fitting.
Further, the tube piece is provided with the stepped hole that bore is less than port, the end of pipeline in the inside of port
Portion is resisted against on stepped hole, improves connective stability.
Further, the both ends of the tube piece are respectively arranged with port, and port is connected at the middle part of tube piece, each
Port passes through snap ring respectively and connects a pipeline with locking nut, facilitates the docking for realizing pipeline, and connective stability is good, leakproofness
Good, the port at both ends can be different bores, to easily realize being connected for different caliber pipes.
Compared with prior art, the utility model advantage is:
Conduit coupling structure described in the utility model is simple, compact, and attended operation is convenient, efficient, ensures pipeline
Integrity, anti-pulling and anti-screwing property are good, ensure that good connective stability, connection sealing are good.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of conduit coupling；
Fig. 2 is the structural schematic diagram of snap ring.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
A kind of conduit coupling disclosed in the utility model embodiment, structure is simple, and attended operation is convenient, efficient, simultaneously
Ensure that good connective stability, connection sealing are good.
As depicted in figs. 1 and 2, a kind of conduit coupling mainly includes pipe fitting 1, snap ring 2, locking nut 3 and sealing ring
4, the whole snap ring 2 is in circular ring shape, and the fracture 22 for cutting off its circumferencial direction, i.e. 2 structure of snap ring are offered on circular ring shape
The elastic ring of radial contraction can be carried out at one, pipeline 5 is inserted into the port 11 opened up on pipe fitting 1, the outer wall of port 11
External screw thread for connecting with locking nut 3 is set, and locking nut 3, snap ring 2 and sealing ring 4 are sleeved on the excircle of pipeline 5
On, sealing ring 4, snap ring 2 outer diameter be less than locking nut 3 thread segment internal diameter, locking nut 3 and pipe fitting 1 by snap ring 2,
Sealing ring 4 is clipped between the two, and sealing ring 4 is between snap ring 2 and pipe fitting 1, and the locking nut 3 is in its thread segment
Back segment be provided with that internal diameter is gradually reduced for squeezing the undergauge section 31 of 2 radial contraction of snap ring, i.e., undergauge section 31 be internal diameter gradually
Threaded connection on reduced conical section, locking nut 3 and port outer wall, the undergauge section 31 during precession of locking nut 3
Snap ring 2, sealing ring 4 are pressed on the end face of port 11, sealing ring 4 provides good leakproofness, and snap ring 2 then plays fixation
The effect of pipeline, and the inclined-plane of undergauge section 31 generates radial active force to snap ring 2 simultaneously, so that snap ring 2 is radially contracted
Be fixedly clamped pipeline 5.
In order to ensure that the undergauge section 31 of locking nut 3 can be stable by 2 radial compression of snap ring, snap ring 2 connects with undergauge section 31
One end of touching is provided with tapered slope 21, and tapered slope 21 and the taper of undergauge section 31 match, and increases contact area, ensures card
The stable state in undergauge of 2 energy of ring, ensures the fixed stability of pipeline 5, in the present embodiment, the taper a of undergauge section 31
It is 70~80 °, preferably 80 °.
In order to increase snap ring 2 can deformation elasticity, one end that snap ring 2 is contacted with undergauge section 31 is spaced apart in a circumferential direction
Equipped with several notches 23, i.e. notch 23 is provided at tapered slope 21, and notch 23 is 2 edge of snap ring along the axial depth of pipeline 5
The half of the axial thickness of pipeline 5 can preferably carry out radial expansion shape so that snap ring forms an annular claw-type structure
Become, improves the stability fixed to pipeline 5.
It is provided with the annular groove 12 for accommodating sealing ring 4 in the outer end oral area of port 11 on pipe fitting 1, sealing ring 4 is being locked
Tight nut 3 is pressed in annular groove under the axial active force of pipeline 5, improves connection sealing.
Pipe fitting 1 is provided with the stepped hole that bore is less than port in the inside of port, and the end of pipeline 5 is resisted against stepped hole
On, under the effect of the frictional force caused by 2 obvolvent pipeline 5 of snap ring, the end of pipeline 5 is pressed on stepped hole, improves connection
Stability；The both ends of pipe fitting 1 are respectively arranged with port 11, and port 11 is connected at the middle part of pipe fitting 1, and each port 11 is distinguished
A pipeline 5 is connected by snap ring 2 and locking nut 3, the middle part outer wall of pipe fitting 1 is in prism-shaped, is convenient for screwing fixation.
Above are merely preferred embodiments of the utility model, it is noted that above-mentioned preferred embodiment should not regard
For limitations of the present invention, the protection scope of the utility model should be defined by the scope defined by the claims..For
For those skilled in the art, without departing from the spirit and scope of the utility model, it can also make several
Improvements and modifications, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of conduit coupling, which is characterized in that including pipe fitting (1), snap ring (2) and locking nut (3), the snap ring
(2) whole is in circular ring shape, and the fracture for cutting off its circumferencial direction is offered on circular ring shape, and pipeline (5) is inserted on pipe fitting (1)
In the port (11) opened up, locking nut (3), snap ring (2) are sleeved on the excircle of pipeline (5), and the outer diameter of snap ring (2) is less than
The internal diameter of the thread segment of locking nut (3), snap ring (2) is clipped between the two by locking nut (3) and pipe fitting (1), described
Locking nut (3) is provided with the undergauge section for being used to squeeze snap ring (2) radial contraction that internal diameter is gradually reduced in the back segment of thread segment
(31), the threaded connection on locking nut (3) and port outer wall is so that snap ring (2) radial contraction is fixedly clamped pipeline (5).
2. conduit coupling according to claim 1, which is characterized in that the snap ring (2) is contacted with undergauge section (31)
One end be provided with tapered slope (21).
3. conduit coupling according to claim 1, which is characterized in that the taper of the undergauge section (31) is 70~80 °.
4. conduit coupling according to claim 1, which is characterized in that the snap ring (2) contacted with undergauge section (31)
One end is spaced apart is equipped with several notches (23) in a circumferential direction.
5. conduit coupling according to any one of claims 1 to 3, which is characterized in that the snap ring (2) and pipe fitting
(1) sealing ring (4) being sleeved on pipeline (5) is additionally provided between.
6. conduit coupling according to claim 5, which is characterized in that in port (11) on the pipe fitting (1)
Outer end oral area is provided with the annular groove (12) for accommodating sealing ring (4).
7. conduit coupling according to any one of claims 1 to 3, which is characterized in that the pipe fitting (1) is in port
Inside be provided with bore be less than port stepped hole, the end of pipeline (5) is resisted against on stepped hole.
8. conduit coupling according to any one of claims 1 to 3, which is characterized in that the both ends of the pipe fitting (1)
It is respectively arranged with port (11), port (11) is connected at the middle part of pipe fitting (1), and each port (11) passes through snap ring (2) respectively
A pipeline (5) is connected with locking nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920239987.0U CN209725513U (en) | 2019-02-22 | 2019-02-22 | A kind of conduit coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920239987.0U CN209725513U (en) | 2019-02-22 | 2019-02-22 | A kind of conduit coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209725513U true CN209725513U (en) | 2019-12-03 |
Family
ID=68684243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920239987.0U Active CN209725513U (en) | 2019-02-22 | 2019-02-22 | A kind of conduit coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209725513U (en) |
-
2019
- 2019-02-22 CN CN201920239987.0U patent/CN209725513U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |