CN2527828Y

CN2527828Y - Inserting type pipe joint connecting piece

Info

Publication number: CN2527828Y
Application number: CN 02215070
Authority: CN
Inventors: 胡伟强
Original assignee: Taizhou Huantian Machinery Co Ltd
Current assignee: Taizhou Huantian Machinery Co Ltd
Priority date: 2002-01-07
Filing date: 2002-01-07
Publication date: 2002-12-25
Anticipated expiration: 2012-01-07

Abstract

The utility model relates to a tube union connector for plastic pipeline connection. The tube union connector is composed of a union body with a connecting cavity, and an O-shaped obturating ring, a metal gasket, a clamping sleeve and a nut which are all sleeved on a plastic pipeline and are pressed against a stepped ring platform of the connecting cavity inner wall. The metal gasket and the inner wall of the nut port opposite to the clamping sleeve are shaped like an internal taper; and the inner wall of the clamping sleeve which is provided with a bayonet is jagged or like other projecting-thorn-shaped surfaces. Compared with the prior art, the utility model has the advantages of reliable connection, high pressure bearing, convenient and fast installation and good sealability, particularly applicable to the connection of a composite aluminum plastic pipe.

Description

Inserting type pipe joint link

The utility model relates to a kind of link, and especially plastic pipe connects the pipe joint link of usefulness.

At present, most of mechanical type pipe connector or the spigot and socket type pipe connector of adopting of the connection of plastic tube.It is mainly by seal ring sealing and cutting ferrule chucking.The defective of this link is: the bore of circulation is little, and it is low to bear hydrodynamic pressure, and sealing is poor, when the pipeline hydrodynamic pressure is high slightly, occurs sometimes between link and the tubing being out of shape the leakage that causes or dialling and take off phenomenon, and therefore, using effect is undesirable.

The purpose of the utility model is to provide a kind of good airproof performance, and water flow is big, bears the high inserting type pipe joint link of pressure.Its technological scheme be achieved in that it by the fittings body that has connection chamber and be enclosed within on the plastic tube, the O-ring seals, metallic shim, cutting ferrule and the nut that are combined on the connection chamber stair ring platform by the top successively form.Described cutting ferrule has the bayonet socket that rises; Described metallic shim is inner conical with the port inner wall of the relative cutting ferrule of nut.

Structure of the present utility model the cutting ferrule inwall can also be made flexuose or other dentation the thorn face, the external port of nut is made any one body in outer cross or outer octagon, interior cross, the interior octagon.

When the utility model uses, as long as fastening nut is tightened to the fittings body rotation, because nut and pad port are internal cone wall, make cutting ferrule two ends balance lock, make the zigzag fashion thorn face of cutting ferrule internal surface thrust the outer wall of plastic tube simultaneously, the tubing interlock is fixed in the fittings body, thereby has avoided the tubing axial rotation, form a fixed connection.Meanwhile, in the nut screwing clamping process, O-ring seals is subjected to the extruding of cutting ferrule, pad, forces O RunddichtringO distortion involution on the outer ring of tubing.

Obviously, this reality is compared with prior art novel, has compact structure, connects reliably, and current are unimpeded, and are easy for installation, quick, and advantages such as good airproof performance are specially adapted to the connection of aluminium-plastic composite pipe.

Below in conjunction with embodiment shown in the drawings, the utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the sectional view after Fig. 1 makes up.

Fig. 3 is the amplification view of A portion among Fig. 2.

Fig. 4 is that the cutting ferrule inwall is the A portion amplification view of convex belemnoid shape among Fig. 2.

Fig. 5 be nut tighten the port schematic representation.

Inserting type pipe joint link is made up of fittings body 1, O-ring seals 2, metallic shim 3, cutting ferrule 4 and the nut 5 of tightening usefulness.

Fittings body 1 is provided with connection chamber 7, and connection chamber 7 is by joint chamber 7a, and inner chamber 7b that cooperates with tubing 6 and fastening chamber 7c form; Joint chamber 7a and fastening chamber 7c are shaped on internal thread, and nut 6 one ends are shaped on outside thread and match with fastening chamber 7c.O-ring seals 2, metallic shim 3, cutting ferrule 4, nut 5 are enclosed within on the tubing 6, tighten successively by the top by nut 6 to be combined on the stair ring platform between fastening chamber 7c and the inner chamber 7b.On the cutting ferrule 4 bayonet socket of rising is arranged, its internal surface is made jagged thorn face, the port inner wall of pad 3, nut 5 relative cutting ferrules 4 is inner conical 3a, 5a, certain tapering is arranged, when dialling jack panel 5, two internal cone walls on nut 5, the pad 3 force cutting ferrule 4 to tighten locking, and make the sawtooth of its internal surface or convex belemnoid shape 4a thorn face embed the surface of tubing 6 and fix.Tubing 6 is generally plastic tube, and as aluminium-plastic composite pipe, PPR pipe etc. also are applicable to the binding of stainless steel pipe.Fittings body 1 can be straight-through body, as shown in Figure 1 and Figure 2, also can be the fittings body of patterns such as curved logical, threeway, reducing.Outer cross 5a is made at the rear portion of nut, also can make other bodies such as outer octagon, interior octagon, interior cross.

When the utility model uses,, screw fastening nut 5 and get final product as long as directly tubing 6 is inserted the inner chamber 7b of fittings body 1.

Claims

1, a kind of inserting type pipe joint link, it is by the fittings body that has connection chamber (7) (1) and be enclosed within O-ring seals (2), metallic shim (3), cutting ferrule (4) and the nut (5) that plastic tube (6) goes up, is combined on connection chamber (7) the inwall stair ring platform by the top successively and form, cutting ferrule (4) has the bayonet socket of rising, and it is characterized in that: described metallic shim (3), nut (5) cutting ferrule (4) port inner wall relatively are inner conical (3a, 5a).

2, according to the described inserting type pipe joint of claim 1 link, it is characterized in that: the thorn face (4a) of described cutting ferrule (4) inwall indentation or other convex belemnoid shape.

3, according to claim 1 or 2 described inserting type pipe joint links, it is characterized in that: the port of described nut (5) is any one body in outer cross (5a) or outer octagon, interior cross, the interior octagon.

4, according to claim 1 or 2 described inserting type pipe joint links, it is characterized in that: the fittings body of patterns such as straight-through, curved logical, the threeway of described fittings body (1), reducing.

5, according to the described inserting type pipe joint of claim 3 link, it is characterized in that: the fittings body of patterns such as straight-through, curved logical, the threeway of described fittings body (1), reducing.