CN2532343Y

CN2532343Y - Connector for pipeline

Info

Publication number: CN2532343Y
Application number: CN 02230659
Authority: CN
Inventors: 郑忠华
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-03
Filing date: 2002-04-03
Publication date: 2003-01-22
Anticipated expiration: 2012-04-03

Abstract

The utility model relates to a socket type pipe connecting piece, which is composed of a pipe joint and a sealing part matched with the pipe joint. The utility model is characterized in that a connecting hole of the pipe joint is a cone hole with a larger inner diameter and a smaller outer diameter; the sealing part with inverse teeth arranged in the cone inner wall is matched with the cone hole. The pipe is directly inserted into a connecting pipe orifice provided with a sealing ring when the pipe is installed, and then the installation is finished with the pipe being drawn out a little, which is convenient and easy, fast and reliable and cost saving.

Description

A kind of connected pipe joint

One, technical field: the utility model relates to a kind of link that is used for piping erection, particularly about pipe joint and Sealing thereof.

Two, background technique: the existing very long history of the use of galvanized pipe, its link also is the galvanized pipe joint.Popular in recent years steel is moulded pipe, Stainless Steel Tube and copper tube and is then used special-purpose steel pipe joint, during installation many instruments to be arranged, as screw die, pipe tongs etc., also want some auxiliary material (as sealing strip), shortcoming such as labor intensity is big, the time is long, expense is high, sealing is unreliable.Aluminium-plastic composite pipe, crosslinked polyethylene pipe, polyethylene pipe have appearred again in recent years, and these pipelines are mostly used copper connection external member, expanding with heat and contract with cold during installation and in the future, pipe bed landform changes, and sliding tooth, disconnection often appear in earth shocks etc., produce and leak, and inconvenience, expense costliness are installed.

Three, summary of the invention: the utility model is by the improvement design to pipe joint and Sealing, and convenient, time saving and energy saving to reach piping erection, sealing is reliable, the purpose of reducing expenses.

The technical solution of the utility model is: a kind of connected pipe joint, it comprises pipe joint and Sealing, it is characterized in that the pipe joint interface holes is interior big outer little cone shape hole, with the corresponding Sealing of described pipe joint interface holes also be interior little elastic cone body greatly outward.

Said structure can play different seal actions under the situation that difference requires, under field conditions (factors), the flexible needs of pipeline when expanding with heat and contract with cold for satisfying pipeline, be provided with flexible required gap in the pipe joint, this structure makes pipe joint under the pressure of medium, produce outside tension force and axial thrust load in pipe, owing to the effect of conical surface, Sealing, pipe joint body, pipe three press together closely, thereby it is more firm that connection is more sealed.This structure is compared with the copper sleeve that is connected nonmetallic pipes such as PEX pipe, have (sixth that has only the same size copper sleeve) in light weight, low price (have only copper sleeve half), half (copper sleeve has main body, collar, O-ring seal, gland nut) that (having only two parts) simple in structure is copper sleeve, this structure connection pipe is directly to insert in the Sealing in addition, do not reduce the circulation internal diameter of medium, no bottleneck, this is that other form joints are difficult to accomplish.

Four, description of drawings:

Fig. 1 is the utility model structure and fragmentary cross-sectional view;

Fig. 2 is taper seal and fragmentary cross-sectional view thereof;

Fig. 3 is straight connector and the fragmentary cross-sectional view accepted mutually with externally connected pipe thereof;

Fig. 4 is the fragmentary cross-sectional view of elbow and Sealing;

Fig. 5 is the fragmentary cross-sectional view of tee union and Sealing; Among the above-mentioned figure, 1 is straight connector, and 2 is Sealing, and 3 is externally connected pipe, and 11 is the joint cone shape hole, and 12 is the joint inner side end, and 21 is Sealing outer wall conical surface, and 22 is Sealing inwall toothed surface.

Five, embodiment: said pipe joint of the utility model and Sealing are as depicted in figs. 1 and 2, the interface holes that pipe joint (1) docks with externally connected pipe (3) is interior big outer little cone shape hole (11), its cone-apex angle θ is 5 °～7 °, and the pipe joint endoporus is equivalent to big outer little horn mouth on the whole.The Sealing that the pipe joint endoporus is close to (2) shape is corresponding with it, as shown in Figure 3.The cone-apex angle β of Sealing also is 5 °～7 °, and Sealing outer wall (21) is that inner end and inclined-plane, outer end angle are 1/2 β.Sealing inwall (22) is the conical bore of pawl, and pawl is stepped in the cone shape hole, can establish 1～3 layer according to caliber size, and general bore pipe is established 2 layers, and the heavy caliber pipe is established 3 layers of pawl.Its inner taper is opposite with outer wall (21), to make things convenient for the insertion of externally connected pipe.Pipe joint is by the injection mould injection-compression molding, the seal mold injection-compression molding.

This pipe joint connects fast and simple with externally connected pipe, so long as bore conforms to, remove pipe end burr, push hard band slightly and swing, can enter in the pipe joint of band Sealing, slightly up draw behind the insertion precalculated position Sealing and pipe joint tight connecting can be used.After pipe joint and externally connected pipe are installed and are cooperated, because taper seal tightly blocks the water pipe external diameter, under the effect of water pressure, its garden week and end are to simultaneously stressed, water pipe is circumferential when stressed in the garden, produce the bulging of trace, make itself and Sealing more identical, water pipe is subjected to the effect of axial force to be tending towards vertically moving, driving taper seal outwards moves, this locomotivity is subjected to the resistance of inner nosepiece wall tapering just for producing lateral extrusion power, and the aperture that makes Sealing dwindles and gets tightlyer with the external water pipe card to the center, has increased resistance to tension and sealing seal degree that pipe joint cooperates with water pipe.Expanding with heat and contract with cold of water pipe can both tight connecting under field conditions (factors), produces resistance simultaneously and forces seal ends to radially extruding, increases sealability and avoids seepage.

This pipe joint removes Fig. 1, outside the free flow coupling shown in Figure 3, also can be made into as shown in Figure 5 tee union and elbow' shown in Figure 4, three connection mouths of t-joint vertically are connected together each other, elbow' is that the angle that two links are needs fuses, their pipe joint and Sealing shape and structure and aforementioned basic identical are not repeated.

The said pipe joint of the utility model embodiment mainly is to make with high density polyethylene (HDPE), also can be other highstrenghtpiston's injection-compression moldings, said Sealing mainly is with 1608 rubber injection-compression moldings, also can be that highly resilient material is made, externally connected pipe (3) mainly is a plastic tube, also can be other smooth tubing of outer wall.

Claims

1. connected pipe joint, it is made up of pipe joint and Sealing, it is characterized in that: the interface holes of pipe joint (1) is interior big outer little cone shape hole (11), with the corresponding Sealing of described pipe joint interface holes also be interior little taper (2) greatly outward.

2. connected pipe joint as claimed in claim 1 is characterized in that: the endoporus (22) of described elastic cone Sealing (2) is the cone shape hole of band pawl, and tapering is opposite with its Surface Taper direction.

3. connected pipe joint according to claim 1 is characterized in that the interface holes cone-apex angle is 5 °～7 °, and the cone-apex angle of the Sealing that is mated also is 5 °～7 °.

4. connected pipe joint as claimed in claim 1 or 2 is characterized in that: described Sealing (2) inner hole wall is the garden taper hole with 1～3 layer of stepped pawl.

5. connected pipe joint as claimed in claim 1 or 2 is characterized in that: described pipe joint can be straight connector, elbow, three-way union.