A kind of locking rapid pipe joint
Technical field
The utility model relates to field of mechanical technique, more specifically, and particularly a kind of locking rapid pipe joint.
Background technique
In daily life, the transmission of fluid all needs to be undertaken by pipe-line system.And in whole pipe-line system, owing to being subject to the restriction of length, be all be made up of multistage pipeline, the connection between multistage pipeline needs to be undertaken by pipe fittings such as joints.In order to reach Pipe installing object easily, people devise various rapid pipe joint.The structure of existing rapid pipe joint mostly by joint body, and is arranged on intrinsic distribution in the form of a ring and is tilted to interior pawl sheet and is positioned at pawl sheet the cover that unloads that joint body oral area side arranges and form.When installing water pipe, water pipe inserts joint, and pipe outer wall is pushed pawl sheet and opened, and after putting in place, pawl sheet blocks pipe outer wall, makes it to extract, reaches the object of quick links.To extract water pipe, then the cover that unloads utilizing caliber to be greater than water pipe extrudes pawl sheet, makes it to lose clamping force, thus is extracted by water pipe.But this rapid pipe joint also also exists defect.Pawl sheet only can block the tubing made by the lower material of hardness, and tubing as high in the hardness such as stainless steel, copper pipe then can not reliably connect, and pawl sheet easily scratches water tube surfaces, affects sealing.
In order to improve the connectivity robustness of tubing and joint, conventional method is by the technique at fitting end peripheral axial lock fixed position processing ring groove, and when tubing inserts in joint, profile of tooth collar incision groove improves the soundness of connection.Its bellmouth by lining, collar, back cushion, O type circle, unload cover etc. and form, complex structure, manufacture process requirement is high.Although applied widely, connection reliability is poor.
Model utility content
The utility model is intended at least solve one of Problems existing in background technique.
One of the purpose of this utility model is to provide a kind of locking rapid pipe joint, utilizes the connection realized between described rapid pipe joint and adapter that described rapid pipe joint is quick and stable.
For achieving the above object, the utility model provides a kind of locking rapid pipe joint, it comprises and is arranged on the first seal element in described rapid pipe joint and elastic device, also comprises the second seal element be arranged between described first seal element and described elastic device.
Being connected with elastic device by installing the second seal element additional, improving the reliability of the connection between described rapid pipe joint and adapter, meanwhile, the first seal element not affected by other parts, provides the sealing effect of described rapid pipe joint greatly.
Further, described first seal element and described second seal element can be seal ring.
Further, described elastic device can be butterfly spring, also can be helical spring, can also be annular spring.
Preferably, described elastic device is wavy spring.
Further, it also comprises and being arranged in described rapid pipe joint and the lining be connected with described second seal element, is provided with maintainance set, described maintainance set is provided with locking element in described lining; Described elastic device to be arranged in described lining and to be connected with described maintainance set.
Adopt described lining to strengthen reliability that tubing is connected with described rapid pipe joint and intensity.
Described maintainance set and described second seal element is connected by adopting elastic device, described rapid pipe joint is connected with tubing and water flowing, described elastic device available buffer is adopted to change the described maintainance set shift in position caused because of hydraulic pressure, thus the motion slowed down between tubing and described rapid pipe joint, improve stability and the described rapid pipe joint carrying hydraulic pressure ability of connection, also improve the sealing effect of described rapid pipe joint simultaneously.
Further, the cross section of described locking element is circular.
Described locking element can be spherical balls, also can be American football shape steel ball, also can be the rigid ball of other materials.
When the cross section of described locking element is circular, the inwall of described locking element, tubing and described rapid pipe joint is more easily locked.
Further, described lining reduces gradually toward its internal diameter of one end of the described rapid pipe joint mouth of pipe.
When tubing is to described rapid pipe joint access, described tubing contacts with described locking element, locking element is moved to described lining inwall, when tubing will exit described rapid pipe joint, tubing and described locking element move to the described rapid pipe joint mouth of pipe, but described lining reduces gradually toward its internal diameter of one end of the described rapid pipe joint mouth of pipe, when described locking element and tubing point of contact to the distance between locking element and described lining contact internal walls point and interface external diameter sum are greater than described bushing inner diameter, tubing and described lining are locked, when tubing exits described rapid pipe joint further, lock wire can produce naturally, described rapid pipe joint and tubing more and more tighter.
Further, described maintainance set reduces gradually toward its external diameter of one end of the described rapid pipe joint mouth of pipe.
Its internal diameter of described maintainance set one end reduces gradually, facilitates the relative movement of described maintainance set and described lining.
Further, described rapid pipe joint outer wall is provided with the first convex shoulder and the second convex shoulder, and described rapid pipe joint inwall is provided with the first flanged structure be connected with described first seal element and the second flanged structure be connected with described second seal element.
The id tolerance described first seal element and described second seal element being positioned to described rapid pipe joint inwall place controls, described first seal element and described second seal element is made to form certain compression ratio, when tubing inserts described rapid pipe joint, under the protection of joint, tubing is not yielding, and outside and the first seal element and the second seal element close contact, form wider potted line, this provides Reliable guarantee for sealing; Described second flanged structure blocks described second seal element, and described second seal element blocks described elastic device, and described elastic device is propping up described maintainance set, thus the locking making described rapid pipe joint more stable adapter.
Further, it also comprises unloads cover, described in unload cover one end be arranged between described lining and described maintainance set, another-end extends the mouth of pipe of described rapid pipe joint.
When tubing being exited described rapid pipe joint, pushed away by the described cover that unloads to described bush inside, promote described maintainance set mobile to described rapid pipe joint inside, described locking element is no longer subject to the extruding of tubing and described lining inwall, at this moment can exit tubing.
Further, described rapid pipe joint inwall is also provided with the 3rd flanged structure.
Described 3rd flanged structure enters described rapid pipe joint for stoping tubing to continue.
The beneficial effects of the utility model are, a kind of locking rapid pipe joint is provided, this rapid pipe joint is connected with elastic device by installing the second seal element additional, improve the reliability of the connection between described rapid pipe joint and adapter, simultaneously, first seal element is not affected by other parts, provides the sealing effect of described rapid pipe joint greatly.
Accompanying drawing explanation
Figure 1 shows that the structural representation of a kind of locking rapid pipe joint of the utility model embodiment.
Embodiment
Hereafter will describe the utility model in detail in conjunction with specific embodiments.It should be noted that the combination of technical characteristics or the technical characteristics described in following embodiment should not be considered to isolated, they can mutually be combined thus be reached better technique effect.
Figure 1 shows that the structural representation of a kind of locking rapid pipe joint of the utility model embodiment.
Embodiment of the present utility model is described in detail: it comprises and is arranged on the first seal element 2 in described rapid pipe joint 1 and elastic device 3, also comprises the second seal element 4 be arranged between described first seal element 2 and described elastic device 3 below in conjunction with Fig. 1.
Being connected with elastic device 3 by installing the second seal element 4 additional, improving the reliability of the connection between described rapid pipe joint 1 and adapter, meanwhile, the first seal element 2 not affected by other parts, provides the sealing effect of described rapid pipe joint 1 greatly.
In the present embodiment, described first seal element 2 can be seal ring with described second seal element 4.
In the present embodiment, described elastic device 3 can be butterfly spring, also can be helical spring, can also be annular spring.
Preferably, described elastic device 3 is wavy springs.
In the present embodiment, it also comprises and being arranged in described rapid pipe joint 1 and the lining 5 be connected with described second seal element 4, is provided with maintainance set 6, described maintainance set 6 is provided with locking element 61 in described lining 5; Described elastic device 3 to be arranged in described lining 5 and to be connected with described maintainance set 6.
Adopt described lining 5 to strengthen reliability that tubing is connected with described rapid pipe joint 1 and intensity.
Described maintainance set 6 and described second seal element 4 is connected by adopting elastic device 3, described rapid pipe joint 1 is connected with tubing and water flowing, described elastic device 3 available buffer is adopted to change described maintainance set 6 shift in position caused because of hydraulic pressure, thus the motion slowed down between tubing and described rapid pipe joint 1, the stability and the described rapid pipe joint 1 that improve connection carry hydraulic pressure ability, also improve the sealing effect of described rapid pipe joint 1 simultaneously.
In the present embodiment, the cross section of described locking element 61 is circular.
Described locking element 61 can be spherical balls, also can be American football shape steel ball, also can be the rigid ball of other materials.
Described locking element 61 cross section when being circular, the inwall of described locking element 61, tubing and described rapid pipe joint 1 is more easily locked.
In the present embodiment, described lining 5 reduces gradually toward its internal diameter of one end of described rapid pipe joint 1 mouth of pipe.
When tubing accesses to described rapid pipe joint 1, described tubing contacts with described locking element 61, locking element 61 is moved to described lining 5 inwall, when tubing will exit described rapid pipe joint 1, tubing and described locking element 61 move to described rapid pipe joint 1 mouth of pipe, but described lining 5 reduces gradually toward its internal diameter of one end of described rapid pipe joint 1 mouth of pipe, when point of contact to the distance between locking element 61 and the point of contact of described lining 5 inwall and interface external diameter sum of described locking element 61 and tubing is greater than described lining 5 internal diameter, tubing and described lining 5 are locked, when tubing exits described rapid pipe joint 1 further, lock wire can produce naturally, described rapid pipe joint and tubing more and more tighter.
In the present embodiment, described maintainance set 6 reduces gradually toward its internal diameter of one end of described rapid pipe joint 1 mouth of pipe.
Its internal diameter of described maintainance set 6 one end reduces gradually, facilitates the relative movement of described maintainance set 6 and described lining 5.
In the present embodiment, described rapid pipe joint 1 outer wall is provided with the first convex shoulder 11 and the second convex shoulder 12, and described rapid pipe joint 1 inwall is provided with the first flanged structure 13 be connected with described first seal element 2 and the second flanged structure 14 be connected with described second seal element 4.
The id tolerance that described first seal element 2 and described second seal element 4 are positioned at described rapid pipe joint 1 inwall place is controlled, described first seal element 2 is made to form certain compression ratio with described second seal element 4, when tubing inserts described rapid pipe joint 1, under the protection of joint, tubing is not yielding, and outside and the first seal element 2 and the second seal element 4 close contact, form wider potted line, this provides Reliable guarantee for sealing; Described second flanged structure 14 blocks described second seal element 4, and described second seal element 4 blocks described elastic device 3, and described elastic device 3 is propping up described maintainance set 6, thus the locking making described rapid pipe joint 1 more stable adapter.
In the present embodiment, it also comprises unloads cover 7, described in unload cover 7 one end be arranged between described lining 5 and described maintainance set 6, the other end extends the mouth of pipe of described rapid pipe joint 1.
When tubing being exited described rapid pipe joint 1, the described cover 7 that unloads is pushed away to described lining 5 inside, promote described maintainance set 6 mobile to described rapid pipe joint 1 inside, described locking element 61 is no longer subject to the extruding of tubing and described lining 5 inwall, at this moment can exit tubing.
In the present embodiment, described rapid pipe joint 1 inwall is also provided with the 3rd flanged structure 15.
Described 3rd flanged structure 15 enters described rapid pipe joint 1 for stoping tubing to continue.
The utility model provides a kind of locking rapid pipe joint 1, this rapid pipe joint 1 is connected with elastic device 3 by installing the second seal element 4 additional, improve the reliability of the connection between described rapid pipe joint 1 and adapter, simultaneously, first seal element 2 is not affected by other parts, provides the sealing effect of described rapid pipe joint 1 greatly.
In description of the present utility model, term " setting ", " connection " etc. all should be interpreted broadly, and such as, " connection " can be fixedly connected with, and also can be removably connect, or connects integratedly; Can be direct connection, also can be indirectly connected by intermediary.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
Although given embodiments more of the present utility model, it will be understood by those of skill in the art that when not departing from the utility model spirit herein, can change embodiment herein.Above-described embodiment is exemplary, should using embodiment herein as the restriction of the utility model interest field.