CN103775774A - Direct-push connecting pipe joint - Google Patents

Abstract

The invention discloses a direct-push connecting pipe joint. The direct-push connecting pipe joint comprises a joint body provided with a through hole used for insertion of a connected pipe, wherein a bellmouth orifice is formed in the end part of the through hole; the big mouth of the bellmouth orifice faces inwards and the small mouth of the bellmouth orifice faces outwards; the wall body of the joint body between the small mouth of the bellmouth orifice and the end part of the through hole is a sealing section; an O-ring seal is internally arranged in the big mouth of the bellmouth orifice; a locking component is internally arranged in the small mouth of the bellmouth orifice; the locking component comprises a bearing ring used for being sleeved upon the connected pipe and at least three roll balls; the inner side end of the bearing ring extrudes the O-ring seal; each roll ball is mounted inside the bearing ring in a rolling manner; the inner circumferential surface and the outer circumferential surface of the bearing ring bulge each roll ball. The direct-push connecting pipe joint provided by the invention can reduce the difficulty of installation and connection and the cost, and the connected pipe can be firmly locked.

Description

Directly-pushing connecting pipe joint

Technical field

The present invention relates to pipe joint, be specifically related to directly-pushing connecting pipe joint.

Background technique

Pipe joint refers to the link that two segment pipes are coupled together, and current most pipe joint adopts the mode of screw thread or elastic opening ring to connect.Comparatively very complicated of these Placements, efficiency is low.

Chinese invention patent discloses a kind of directly-pushing connecting pipe joint (application number is 200910040489.4), and it comprises joint body, in the through hole of joint body, is provided with bellmouth orifice, is provided with O-ring seal and elastic opening snap ring in bellmouth orifice.In the time that connected tube directly pushes and plugs in the through hole of joint body, elastic opening snap ring by by wedging in the circumferential clasp groove of connected tube; In the time that connected tube is extracted, elastic opening snap ring is as a kind of locking member, will be by the osculum wedging of bellmouth orifice, and connected tube cannot be extracted.

Visible, the effect of circumferential clasp groove is particularly important, if the degree of depth of circumferential clasp groove is excessive, elastic opening snap ring will be difficult to by wedging firmly take out, and even the tube wall of connected tube is extruded to a ring impression, causes connected tube to damage; If the degree of depth of circumferential clasp groove is too small, elastic opening snap ring easily departs from and skids again, cannot play the wedging effect to connected tube, causes connected tube arbitrarily to be unpluged.

But, the normally light face of tube wall of at present general connected tube, if adopt above-mentioned directly-pushing connecting pipe joint, must process connected tube, to form the suitable circumferential clasp groove of the degree of depth, not only increase installation procedure, difficulty of processing is large, cost is high, and in the time offering circumferential clasp groove, also easily block connected tube, cause tubing waste.

Summary of the invention

In order to overcome the deficiencies in the prior art, the object of the present invention is to provide directly-pushing connecting pipe joint, can reduce the difficulty and the cost that connect are installed, and can firm locked connected tube.

Object of the present invention adopts following technological scheme to realize:

Directly-pushing connecting pipe joint, comprise the joint body with the through hole that can insert for connected tube, the end of this through hole is provided with bellmouth orifice, large mouthful of bellmouth orifice inwardly, the osculum of bellmouth orifice outwardly, and the joint body wall body between the osculum of bellmouth orifice and the port of through hole is sealing section, in large mouthful of bellmouth orifice, be provided with O-ring seal, in the osculum of described bellmouth orifice, be provided with locking member, described locking member comprises for being sleeved on retainer ring and at least three balls on connected tube, the medial extremity of retainer ring is squeezed in O-ring seal, each ball rolls and is installed in retainer ring, and each ball is protruded by inner circumferential surface and the external peripheral surface of retainer ring.

On the basis of the above, the present invention can do following improvement:

On described retainer ring, have receiving bore, each receiving bore distributes around the axis axisymmetric of retainer ring; Each described ball rolls and is matched with in receiving bore.

The aperture of described receiving bore increases in retainer ring to retainer ring.

The medial extremity of described retainer ring has at least three bayonet sockets, and each bayonet socket distributes around the axis axisymmetric of retainer ring.

The external peripheral surface of described retainer ring is low inside and high outside conical surface, and described ball protrudes from this conical surface.

Described sealing section extends axially along through hole, is separated by and forms release space between this sealing section and connected tube.

The outboard end of described retainer ring is axially extended with extension along retainer ring, and this extension is stretched in described release space.

Described directly-pushing connecting pipe joint is also furnished with the solution lock ring for being inserted into release space, and this solution lock ring coordinates with release interstitial gap.

Described O-ring seal is that oil sealing or cross section surround for circle or by the adaptive bellmouth orifice inwall of outer arc, the cambered outwards interior outer arc of inner arc.

The large mouthful of described bellmouth orifice is connected with the wall body of joint body by a transition circle segmental arc, and described O-ring seal is placed in transition circle segmental arc, and this transition circle segmental arc and O-ring seal shape size are suitable and form water-stop.

Compared to existing technology, beneficial effect of the present invention is:

(1) ball of the present invention can be supported on retainer ring between joint body and connected tube, being equivalent to ball rolls on same attachment face together with retainer ring, under the effect of retainer ring, ball sleeve is contained on connected tube, the extruding elastic force that retainer ring produces after crush seal cushion rubber and make ball there is the trend to outer rolling with respect to connected tube, the wall body that the entirety that ball and retainer ring form is narrowed gradually by bellmouth orifice pushes, thereby make ball locking (wedging) connected tube, realize the firmly locked of connected tube.Because ball is symmetrical with the centerline axis of retainer ring, therefore ball will produce uniform extruding force to connected tube, make connected tube stressed evenly, obtain good locking and connect, avoid connected tube to tilt, also avoided connected tube by excessively locked and block damage;

(2) connected tube of the present invention can directly insert in the through hole of joint body and realizes and connecting, and is applicable to the connected tube that outer surface is light face, has saved the operation of machining screw or groove, reduces the difficulty and the cost that connect are installed;

(3) because the aperture of receiving bore increases in retainer ring to retainer ring, therefore ball can conveniently pack in receiving bore, and after being connected with connected tube, ball is locked by joint body again, therefore ball with the assembly process of connected tube in can not come off, this structure can make produce store transportation be more prone to, convenient, reliable;

(4) bayonet socket of the present invention can make retainer ring produce elasticity grasp radially, and in the time that retainer ring is first pulled connected tube into, the connected tube of can holding, strengthens lock ability.

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

Accompanying drawing explanation

Fig. 1 is the structure cross-sectional schematic of one of them preferred implementation of directly-pushing connecting pipe joint of the present invention;

Fig. 2 is the structure cross-sectional schematic of one of them preferred implementation of locking member of the present invention;

Fig. 3 is the structural representation of retainer ring medial extremity of the present invention.

Fig. 4 is the structure cross-sectional schematic of another preferred implementation of directly-pushing connecting pipe joint of the present invention.

In figure: 1, connected tube; 2, through hole; 21, bellmouth orifice; 3, joint body; 31, arc section; 4, sealing section; 5, O-ring seal; 6, retainer ring; 61, receiving bore; 62, bayonet socket; 63, conical surface; 64, extension; 7, ball; 8, release space.

Embodiment

Directly-pushing connecting pipe joint as shown in Figure 1, comprise the joint body 3 with the throughhole 2 that can insert for connected tube 1, the end of this throughhole 2 is provided withbellmouth orifice 21, large mouthful ofbellmouth orifice 21 inwardly, the osculum ofbellmouth orifice 21 outwardly, and joint body 3 wall bodies between the port of the osculum ofbellmouth orifice 21 and throughhole 2 are sealingsection 4, in the large mouth ofbellmouth orifice 21, are provided with O-ring seal 5, in the osculum ofbellmouth orifice 21, are provided with locking member.Locking member comprises for being sleeved onretainer ring 6 and at least threeballs 7 on connected tube 1, the medial extremity ofretainer ring 6 is squeezed in O-ring seal 5, eachball 7 rolls and is installed inretainer ring 6, and eachball 7 is protruded by inner circumferential surface and the external peripheral surface ofretainer ring 6.

Throughhole 2 is Spielpassung with connected tube 1, and therefore throughhole 2 can insert for connected tube 1.Ball 7 can be supported onretainer ring 6 between joint body 3 and connected tube 1, being equivalent toball 7 rolls on same attachment face together withretainer ring 6, under the effect ofretainer ring 6,ball 7 is sleeved on connected tube 1,retainer ring 6 makesball 7 have the trend of rolling to joint body 3 ends with respect to connected tube 1 at the extruding elastic force of crushseal cushion rubber 5 rear generations, the wall body that the entirety thatball 7 andretainer ring 6 form is narrowed gradually bybellmouth orifice 21 pushes,ball 7 is locked on connected tube 1, also be equivalent toball 7 and theretainer ring 6 tensioners osculum place at thisbellmouth orifice 21, thereby realize firm locked connected tube 1.

As shown in Figure 2, as a preferred embodiment of the present invention, have receivingbore 61 onretainer ring 6, each receivingbore 61 distributes around the axis axisymmetric ofretainer ring 6; Eachball 7 rolls and is matched with in receiving bore 61.Thisroutine ball 7 is three, and thecorresponding receiving bore 61 arranging is also three, can be also three above anyamount.Ball 7 obtains spacing in receivingbore 61 so thatball 7 relatively connected tube 1 roll, makeretainer ring 6 and O-ring seal 5 mutually extruding the osculum place nearbellmouth orifice 21 be pushed lockedly by joint body 3, nowretainer ring 6 is held up unsettled byball 7.

The increase toretainer ring 6 inretainer ring 6 of the aperture of receivingbore 61, the hole that also can be set to trapezoidal hole, shoulder hole, inwall be arc etc., thereforeball 7 can conveniently pack in receivingbore 61, andball 7 can not come off after packingretainer ring 6 into.

As shown in Figure 3, the medial extremity ofretainer ring 6 has at least threebayonet sockets 62, and eachbayonet socket 62 distributes around the axis axisymmetric of retainer ring 6.Thisroutine bayonet socket 62 is three.

The external peripheral surface ofretainer ring 6 is low inside and high outsideconical surface 63, andretainer ring 6 can contact cooperation with 21 of bellmouth orifices, obtains the impacting force of Maximum Contact area simultaneously.Ball 7 protrudes fromconical surface 63, andball 7 can contact connected tube 1 and joint body 3 simultaneously, makes the position ofball 7 inretainer ring 6 be balanced adjustment, is conducive to connected tube 1 and obtains the even extruding force of ball 7.Certainly, the external peripheral surface ofretainer ring 6 also can be made into arc shaped surface, square right angle face or ladder surface, and the wall body of the joint body 3 at the osculum place ofbellmouth orifice 21 can produce extruding force toretainer ring 6 equally.

As shown in Figure 4, as another preferred embodiment of the present invention,sealing section 4 extends axially along throughhole 2, is separated by and forms release space 8 between thissealing section 4 and connected tube 1.This release space 8 heads intoretainer ring 6 after inserting for external solution lock tool toward the direction of crushseal cushion rubber 5, makeretainer ring 6 depart from the contact of the osculum ofbellmouth orifice 21, realizes release easily.This routine correspondence is furnished with the solution lock ring for being inserted into release space, also can be set to semi-ring, is assembled into pliers shape, as unlocking tool, this solution lock ring and release space 8 Spielpassung, separate lock ring and can insert in release gap 8 to head intoretainer ring 6, thereby realize release.

The outboard end ofretainer ring 6 alongretainer ring 6 be axially extended withextension 64, thisextension 64 is stretched in release space 8.Thisextension 64 the degree of depth that has reduced release gap 8 is set, be beneficial to and separate lock ring and insert mobile a bit of distance and just can head intoretainer ring 6 releases.

As Figure 1 and Figure 4, be stuck when preventing that connected tube 1 from inserting throughhole 2, the cross section of O-ring seal 5 is circular, or O-ring seal 5 is made as to oil sealing or is surrounded byadaptive bellmouth orifice 21 inwalls of outer arc, the cambered outwards interior outer arc of inner arc.The large mouthful ofbellmouth orifice 21 is connected with the wall body of joint body 3 by a transition circlesegmental arc 31, and O-ring seal 5 is placed in transition circlesegmental arc 31, and this transition circlesegmental arc 31 and O-ring seal 5 shape sizes are suitable and form water-stop.In the time that connected tube 1 inserts throughhole 2, O-ring seal 5 can be guaranteed to be contained in transition circlesegmental arc 31, and can not block the insertion of connected tube 1.

The cross section that it will be appreciated by persons skilled in the art that O-ring seal 5 also can be arranged to ellipse, square etc. other can realize water-stop, again can stuck connected tube 1 shape.Above-mentioned directly-pushing connecting pipe joint is all illustrated as straight coupling, but the present invention can be applicable to the multiple-pass joint such as angle coupling, tee union completely.

Above-mentioned mode of execution is only the preferred embodiment of the present invention; can not limit the scope of protection of the invention with this, the variation of any unsubstantiality that those skilled in the art does on basis of the present invention and replacement all belong to the present invention's scope required for protection.

Claims (10)

1. directly-pushing connecting pipe joint, comprise the joint body with the through hole that can insert for connected tube, the end of this through hole is provided with bellmouth orifice, large mouthful of bellmouth orifice inwardly, the osculum of bellmouth orifice outwardly, and the joint body wall body between the osculum of bellmouth orifice and the port of through hole is sealing section, in large mouthful of bellmouth orifice, be provided with O-ring seal, in the osculum of described bellmouth orifice, be provided with locking member, it is characterized in that: described locking member comprises for being sleeved on retainer ring and at least three balls on connected tube, the medial extremity of retainer ring is squeezed in O-ring seal, each ball rolls and is installed in retainer ring, and each ball is protruded by inner circumferential surface and the external peripheral surface of retainer ring.

2. directly-pushing connecting pipe joint according to claim 1, is characterized in that: on described retainer ring, have receiving bore, each receiving bore distributes around the axis axisymmetric of retainer ring; Each described ball rolls and is matched with in receiving bore.

3. directly-pushing connecting pipe joint according to claim 2, is characterized in that: the aperture of described receiving bore increases in retainer ring to retainer ring.

4. directly-pushing connecting pipe joint according to claim 1, is characterized in that: the medial extremity of described retainer ring has at least three bayonet sockets, and each bayonet socket distributes around the axis axisymmetric of retainer ring.

5. according to the directly-pushing connecting pipe joint described in claim 1-4 any one, it is characterized in that: the external peripheral surface of described retainer ring is low inside and high outside conical surface, and described ball protrudes from this conical surface.

6. according to the directly-pushing connecting pipe joint described in claim 1-4 any one, it is characterized in that: described sealing section extends axially along through hole, is separated by and forms release space between this sealing section and connected tube.

7. directly-pushing connecting pipe joint according to claim 6, is characterized in that: the outboard end of described retainer ring is axially extended with extension along retainer ring, and this extension is stretched in described release space.

8. directly-pushing connecting pipe joint according to claim 6, is characterized in that: described directly-pushing connecting pipe joint is also furnished with the solution lock ring for being inserted into release space, and this solution lock ring coordinates with release interstitial gap.

9. according to the directly-pushing connecting pipe joint described in claim 1-4 any one, it is characterized in that: described O-ring seal is that oil sealing or cross section surround for circle or by the adaptive bellmouth orifice inwall of outer arc, the cambered outwards interior outer arc of inner arc.

10. directly-pushing connecting pipe joint according to claim 8, it is characterized in that: large mouthful of described bellmouth orifice is connected with the wall body of joint body by a transition circle segmental arc, described O-ring seal is placed in transition circle segmental arc, and this transition circle segmental arc and O-ring seal shape size are suitable and form water-stop.

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