CN201748082U

CN201748082U - Quick fastening pipe coupling

Info

Publication number: CN201748082U
Application number: CN2010202386545U
Authority: CN
Inventors: 王德明
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-28
Filing date: 2010-06-28
Publication date: 2011-02-16
Anticipated expiration: 2020-06-28

Abstract

A quick fastening pipe coupling comprises a cylindrical main body, wherein an O-ring and a retainer ring are arranged in the main body in turn from inside to outside; the retainer ring is provided with several retaining teeth obliquely reaching the O-ring; the main body is provided with a barrier structure for blocking the retainer ring from moving towards the O-ring. Under the limit function of the barrier structure, when a pipe is inserted in the main body, the retainer ring has excellent axial stability and will not press the O-ring, so that the O-ring can be sleeved on the pipe smoothly; therefore, insertion convenience between the pipe coupling and the pipe is improved; and the sealing performance between the pipe and the pipe coupling is excellent.

Description

Quick housing type pipe coupling

Technical field

The utility model relates to a kind of housing type pipe coupling, relate in particular to a kind of be used for the fluid line end match clamping, inside has the quick housing type pipe coupling of collar and O RunddichtringO.

Technical background

The conveying of fluid (Ru Shui, oil or gas) needs all generally to use that pipeline realizes, needs to realize being connected by pipe joint between pipeline and the pipeline.Being connected between existing pipeline and the pipe joint generally is to realize that by Placements such as screw thread, chemical glue, welding these Placement operating speeds are slow, and safety reliability is poor, is prone to leakage phenomenon.

A kind of pipe joint that realization is connected fast with pipeline that is used for now also occurred, its structure comprises the pipe joint body.Be disposed with O RunddichtringO and collar in body from inside to outside, collar directly contacts with the O RunddichtringO.Collar is circular, the inside edge of collar is provided with some latches that are connected as a single entity with it, these latches circumferentially are provided with at interval along the collar inward flange, the oblique O RunddichtringO that stretches in the end of latch, and the aperture of the circular hole that the end of these latches forms is less than the internal diameter of O RunddichtringO.Be provided with circular step surface in body, the O RunddichtringO is resisted against on this step surface.When inserting pipeline in body, the outer circumferential face of pipe end is pushed the end of latch open, and pipeline passes the O RunddichtringO simultaneously, when oppositely extracting pipeline, because the clamping effect of latch end makes pipeline realize being connected with the firm of pipe joint.The O RunddichtringO is socketed on the outer circumferential face of pipeline, under the seal action of O RunddichtringO, realizes sealing between pipeline and the pipe joint.

The pipe joint of this structure in use has very big inconvenience, because collar directly contacts with the O RunddichtringO, when in the pipe joint body, inserting pipeline, pipeline is in pushing the process of latch open, can apply certain axial force to collar, collar can be pressed to the O RunddichtringO after being subjected to this axial force, therefore radial deformation can take place in the O RunddichtringO, this has increased the socket difficulty between pipeline and the O RunddichtringO, if accidentally, the end of pipeline can be smash out the O RunddichtringO from its installed position, make the O RunddichtringO lose sealing effect, pipe joint after the O RunddichtringO is offed normal will lose function of use, and pipeline is extracted in pipe joint, and reinstalls the O RunddichtringO trouble that also seems.

The model utility content

The purpose of this utility model is: a kind of quick housing type pipe coupling is provided, and this pipe joint can be realized being connected with the clamping of pipe end smoothly, the good stability of O RunddichtringO in pipeline grafting process in the pipe joint.

In order to solve the technical problem, the technical solution of the utility model: a kind of quick housing type pipe coupling, comprise body cylindraceous, in body, be provided with O RunddichtringO, collar from inside to outside successively, collar is provided with some latches of the oblique O of stretching to RunddichtringO, is provided with to be used to stop the barrier structure of collar towards the motion of O RunddichtringO direction on body.

This pipe joint also can be done following further improvement:

The internal diameter of barrier structure inside part is less than the internal diameter of barrier structure external lateral portion on the body.

Described barrier structure flare, its stub end are towards collar, and little head end is towards the O RunddichtringO.

Described barrier structure and body are connected as a single entity, and barrier structure is by forming by the wall body of body.

Be provided with packing ring between barrier structure and collar, packing ring matches with barrier structure.

The outside in collar in body is provided with back-up ring, and the back-up ring roof pressure is on collar, and the oral area of body is formed with inward flange, and flanging is pressed on the exterior edge face of back-up ring.

The truncation surface of described back-up ring is " F " shape, is formed with annular slot on the outer circumferential face of packing ring outer end, and the inner end of back-up ring is plugged in the slot.

In body, be provided with baffle ring in the inboard of O RunddichtringO.

Described baffle ring and body are connected as a single entity, and baffle ring is formed through necking deformation by body.

In this quick housing type pipe coupling, be provided with in body and be used to stop the barrier structure of collar towards the motion of O RunddichtringO direction, when pipe end and pipe joint are pegged graft operation, under the qualification of barrier structure, collar can not oppressed the O RunddichtringO, the O RunddichtringO has good positional stability, is convenient to the smooth socket of O RunddichtringO and pipe end, the good airproof performance between this pipe joint and the pipeline.This pipe joint is pegged graft conveniently with pipe end, and pipe joint is not fragile.

Description of drawings

Fig. 1 is the appearance assumption diagram of this pipe joint.

Fig. 2 is the longitudinal section of this pipe joint.

Fig. 3 is the partial sectional view of this pipe joint middle washer.

Fig. 4 is the partial sectional view of this pipe joint guide ring.

Fig. 5 is that this pipe joint uses the structural drawing in threeway.

Embodiment

This fast housing type pipe coupling be arranged on threeway, elbow, straight-through, the water tap, be used for being connected with the end of fluid line, structure comprises body 1 cylindraceous, is provided with O RunddichtringO 4 and collar 8 in body 1 from inside to outside successively.Collar 8 is circular, is provided with the some latches that are connected as a single entity with it at the inside edge of collar 8, and latch is towards O RunddichtringO 4 oblique stretching out, these latches along week of collar 8 upwards uniformly at intervals.

Be provided with barrier structure 2 in body 1, this barrier structure 2 is used to limit the direction motion of collar 8 towards O RunddichtringOs 4 when this pipe joint and pipe end plug.Be provided with step surface in the body 1, O RunddichtringO 4 is between barrier structure 2 and step surface, and under the effect of barrier structure 2 and step surface, O RunddichtringO 4 can stably remain on body 1 inside.Body 1 generally is to be made by the red copper material, and barrier structure 2 is formed by deformation by body 1 wall body, specifically is to form annular or flaring step surface on the wall body of body 1.Body 1 is less than the diameter of barrier structure 2 external lateral portion at the diameter of barrier structure 2 inside parts, and this is convenient to packing ring 5 and back-up ring 6 are installed in body 1, so that movable sheath 3 and the activity of qualification collar 8 in body 1 are installed body 1 in.

Barrier structure 2 flares that show in the Figure of description, the stub end of this barrier structure 2 is towards collar 8, and little head end is towards O RunddichtringO 4.Described packing ring 5 is between barrier structure 2 and collar 8.Adapt with the shape of barrier structure 2, flared structure is also arranged on packing ring 5, the inner peripheral surface of the outer circumferential face of the flared structure on the packing ring 5 and barrier structure 2 fits, and this is beneficial to packing ring 5 stablizing in body 1.

Described back-up ring 6 is positioned at the outside of collar 8 in body 1, the truncation surface of back-up ring 6 is F shape, and back-up ring 6 interior edge faces have comprised three grades of ladder surfaces.Be formed with annular slot 10 at packing ring 5 towards back-up ring 6 distolateral peripheries, back-up ring 6 inner terminals are socketed in the periphery of collar 8, and are plugged in the described slot 10.Be formed with outstanding convex body on movable sheath 3 inner outer circumferential faces, back-up ring 6 inner outermost one-level ladder surfaces are blocked on the exterior edge face of this convex body on the movable sheath 3, in order to avoid movable sheath 3 is deviate from the outside of body 1.Back-up ring 6 inner middle one-level ladder surfaces are pressed on collar 8 outer surfaces, and under the qualification effect of packing ring 5 and back-up ring 6, collar 8 has axial stability preferably in body 1.Outer distolateral oral area at body 1 is provided with the inward flange 7 that is connected as a single entity with it, and this flanging 7 is pressed on the exterior edge face of back-up ring 6.

Movable sheath 3 inner tapered, the outer end reaches the outside of body 1, and movable sheath 3 has certain surplus that endwisely slips in body 1.Movable sheath 3 is when O RunddichtringO 4 directions are slided, and movable sheath 3 inner ends can be pushed the latch on the collar 8 open, the end that makes latch not be plugged on this pipe joint in pipe surface contact, can in body 1, extract pipeline smoothly easily.

Be provided with baffle ring 9 in body 1, baffle ring 9 is positioned at the inboard of O RunddichtringO 4, and the degree of depth in the body 1 is inserted to limit pipeline in the end of baffle ring 9 by stopping pipeline.Baffle ring 9 is connected as a single entity with body 1, and it is formed by necking deformation by body 1.

Claims

1. quick housing type pipe coupling, comprise body cylindraceous, in body, be provided with O RunddichtringO, collar from inside to outside successively, collar is provided with some latches of the oblique O of stretching to RunddichtringO, it is characterized in that: be provided with on body and be used to stop the barrier structure of collar towards the motion of O RunddichtringO direction.

2. quick housing type pipe coupling as claimed in claim 1 is characterized in that: the internal diameter of barrier structure inside part is less than the internal diameter of barrier structure external lateral portion on the body.

3. quick housing type pipe coupling as claimed in claim 2 is characterized in that: described barrier structure flare, its stub end are towards collar, and little head end is towards the O RunddichtringO.

4. quick housing type pipe coupling as claimed in claim 3 is characterized in that: described barrier structure and body are connected as a single entity, and barrier structure is by forming by the wall body of body.

5. as claim 1,2,3 or 4 described quick housing type pipe couplings, it is characterized in that: be provided with packing ring between barrier structure and collar, packing ring matches with barrier structure.

6. quick housing type pipe coupling as claimed in claim 5 is characterized in that: the outside in collar in body is provided with back-up ring, and the back-up ring roof pressure is on collar, and the oral area of body is formed with inward flange, and flanging is pressed on the exterior edge face of back-up ring.

7. quick housing type pipe coupling as claimed in claim 6 is characterized in that: the truncation surface of described back-up ring is " F " shape, is formed with annular slot on the outer circumferential face of packing ring outer end, and the inner end of back-up ring is plugged in the slot.

8. as claim 1,2,3 or 4 described quick housing type pipe couplings, it is characterized in that: in body, be provided with baffle ring in the inboard of O RunddichtringO.

9. quick housing type pipe coupling as claimed in claim 8 is characterized in that: described baffle ring and body are connected as a single entity, and baffle ring is formed through necking deformation by body.