CN201232825Y

CN201232825Y - Pipe joint with insert

Info

Publication number: CN201232825Y
Application number: CNU2008201622045U
Authority: CN
Inventors: 陈铁云
Original assignee: ZHUJI PI'ERSA PIPE INDUSTRY Co Ltd
Current assignee: ZHUJI PI'ERSA PIPE INDUSTRY Co Ltd
Priority date: 2008-08-04
Filing date: 2008-08-04
Publication date: 2009-05-06
Anticipated expiration: 2018-08-04

Abstract

The utility model discloses a pipe connector with an embedded part, which comprises a pipe connector body and an embedded part embedded with the inner wall of the pipe connector body. A plurality of annular grooves are arranged on the side wall of the embedded part propped against the pipe connector body, wherein, the cross section of one annular groove is a rectangle, and the width of the annular groove is 2 to 3 mm. The width of one annular groove on the embedded part of the pipe connector is 2 to 3 mm, thereby material embedded in the annular groove is less, the effect of expansion and contraction in the position is weak, and the sealing property of the pipe connector is enhanced under the condition that sufficient twisting resistance is ensured.

Description

A kind of pipe joint that has inserts

Technical field

The present invention relates to a kind of pipe jointer spare, a kind of specifically pipe joint that has inserts.

Background technique

The pipe joint that has inserts comprises pipe joint body and inserts, and inserts is generally the threaded metal body of tubulose, is embedded in by injection moulding in the pipe joint of plastics.There is the pipe joint of inserts to be mainly used in the pipe-line system of some high temperature, high pressure.

The pipe joint of existing band inserts as shown in Figure 1, its inserts inside is provided with screw thread, screw thread one end end is provided with the annular protrusion 5 that extends to the axle center, the inserts outer wall is provided with some along circumferential mutual disconnected annular groove.Annular protrusion 5 is mainly used in and prevents that plastics flow in the screw thread in the injection moulding process, and annular groove is used to increase the torsional rotation force square of inserts and pipe joint.

The pipe joint of said structure inserts level in injection moulding is processed is enclosed within on the insertion axle of mould, cooperate with annular protrusion 5 owing to insert axle, and annular protrusion 5 is less with the horizontal area of contact of insertion axle horizontal, causes inserts to tilt in injection moulding process easily.Though it increases torsional rotation force square between inserts and pipe joint body annular groove, but the rate of expanding with heat and contract with cold of inserts and joint body is different under the same conditions, cause inserts and joint body joint particularly the slit to occur easily, cause leakage phenomenon at the annular groove place.

Chinese patent 200620070216.6 discloses a kind of metal construction that is embedded in the plastic pipe.Metal construction is a tubulose, and groove is set on the body.When the metal construction of this patent disclosure is embedded in the plastic tube, same inevitable because the inserts rate of expanding with heat and contract with cold different with joint body causes the problem of leakage.

Summary of the invention

The utility model provides a kind of pipe joint of revealing that has inserts simple in structure, difficult.

A kind of pipe joint that has inserts, comprise the pipe joint body and with the inserts of pipe joint inner body wall tabling, have several annular grooves on the sidewall that inserts and pipe joint body are close to, the cross section of one of them annular groove is a rectangle, and groove width is 2～3mm.

Annular groove is positioned at the end that inserts stretches into pipe joint body depths, and easier preventing leaked.

What the cross section of all the other annular grooves was an A/F less than bottom width is trapezoidal, can increase the torsional rotation force square.

The end end that inserts stretches into pipe joint body depths is provided with some projectioies, increases anti-torsion ability.

Inserts internal diameter everywhere equates, can prevent that the central inserts of injection moulding process from tilting.

An annular groove groove width on the inserts of the utility model pipe joint is at 2～3mm, make that the material that is embedded in this annular groove is less, thereby make this place expand with heat and contract with cold effect a little less than, guaranteeing to have under the condition of enough torsional rotation force squares, improved the sealability of pipe joint.

Description of drawings

Fig. 1 is the cross-sectional view of existing inserts;

Fig. 2 is the cross-sectional view of the utility model pipe joint;

Fig. 3 is the cross-sectional view of inserts in the pipe fitting shown in Figure 2;

Fig. 4 is the right elevation of inserts shown in Figure 3;

Embodiment

As shown in Figure 1, a kind of pipe joint that has inserts, comprise pipe joint body 2 and with the inserts 1 of pipe joint body 2 inwall tablings, have several annular grooves 3 on the sidewall that inserts 1 and pipe joint body 2 are close to.

Being positioned at the cross section of annular groove 3a that inserts 1 stretches into an end of pipe joint body 2 depths is rectangle, and groove width is 2～3mm.All the other annular groove 3b are consistent with the annular groove on the existing pipe joint, and what its cross section was an A/F less than bottom width is trapezoidal, and two inwalls of annular groove 3b can be waveform, can improve the anti-torsion ability between inserts 1 and the pipe joint body 2.

The end end that inserts 1 stretches into pipe joint body 2 depths is provided with some protruding 4, is mainly used in the torsional rotation force square that increases inserts and pipe joint.

Claims

1, a kind of pipe joint that has inserts, comprise pipe joint body (2) and with the inserts (1) of pipe joint body (2) inwall tabling, have several annular grooves (3) on the sidewall that inserts (1) and pipe joint body (2) are close to, it is characterized in that: the cross section of one of them annular groove (3a) is a rectangle, and groove width is 2～3mm.

2, pipe joint as claimed in claim 1 is characterized in that: described annular groove (3a) is positioned at the end that inserts (1) stretches into pipe joint body (2) depths.

3, pipe joint as claimed in claim 1 is characterized in that: what the cross section of all the other annular grooves (3b) was an A/F less than bottom width is trapezoidal.

4, pipe joint as claimed in claim 1 is characterized in that: the end end that described inserts (1) stretches into pipe joint body (2) depths is provided with some projectioies (4).

5, pipe joint as claimed in claim 1 is characterized in that: described inserts (1) internal diameter everywhere equates.