CN200946735Y

CN200946735Y - Aluminum-plastics composite pipe joint

Info

Publication number: CN200946735Y
Application number: CN 200620063251
Authority: CN
Inventors: 李志新
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-23
Filing date: 2006-08-23
Publication date: 2007-09-12
Anticipated expiration: 2016-08-23

Abstract

The utility model discloses an aluminum plastic compound pipe tie-in comprising a tie-in main body, a core pipe, a core pipe seal ring, a C shape pressing loop and a locking nut. The outer screw threads of the tie-in core pipe occlude the inner screw threads of the locking nut. The C shape pressing loop is connected in a movable way in the ring shape hollow chamber formed between the core pipe and the locking nut. The features lie in that the longitudinal section of the C shape pressing loop connected with the core pipe in a movable way is designed as a trapezoid. Three or more plackets are arranged on the obverse C ring. Transverse raised ridges and longitudinal raised ridges are arranged on the inner wall of the pressing loop. The utility model has low production cost, is easy to be assembled and is erosion resistant, leakage resistant and pulling-out resistant, and so is of great generalization value.

Description

Aluminium-plastics composite pipe joint

Technical field

The utility model relates to the plastic joint field, more particularly relates to aluminium-plastics composite pipe joint.

Background technique

At present, occur aluminium-plastics composite pipe joint on the market and mainly contain cutting ferrule compression type copper sleeve, clamp compression type copper sleeve and a small amount of FERRULETYPE plastic joint.But cutting ferrule compression type copper sleeve weight is big, machine shaping efficient is low, the cost height, antifreeze relatively poor with decay resistance, the core pipe is lacked very much easy the becoming flexible of tubing when vacillating now to the left, now to the right and is caused seepage, and the FERRULETYPE plastic joint on the market, reduced cost, but technology is poor, materials are poor, the trim ring design is improper, and the design of core pipe is unreasonable.As application number is 95114270, the applying date is December 20 nineteen ninety-five, and denomination of invention is an aluminium-plastics composite pipe joint, a kind of aluminium-plastics composite pipe joint, it is characterized in that forming by overlapping in joint core pipe, joint overcoat and the joint, cover and joint core pipe can integrated or splits in the joint; The outside thread of joint core pipe and the internal thread interlock of joint overcoat; Cover in the joint is or/and the outer inner room of joint core pipe and joint forms a toroidal cavity, and the interior external diameter of toroidal cavity is slightly larger than the interior external diameter of aluminium-plastic composite pipe, and the plastic-aluminum combined tube opening after the expansion tightly is placed in this toroidal cavity; Overlap or/and joint is arranged with screw thread outward the threaded engagement of the aluminium-plastic composite pipe after this screw thread and the expansion in the toroidal cavity part, joint.Tubing was easily loosening when this patent core pipe was vacillated now to the left, now to the right, deficient in stability.

The model utility content

The purpose of this utility model is exactly provide for the deficiency that solves prior art a kind of not only simple in structure, the aluminium-plastics composite pipe joint of easy for installation and good seal performance.

The utility model is to adopt following technical solution to realize above-mentioned purpose: a kind of aluminium-plastics composite pipe joint, comprise adapter body, core pipe, core seal of tube circle, C type retainer ring and locking nut, the outside thread of joint core pipe and the internal thread interlock of locking nut, C type retainer ring is actively socketed in the toroidal cavity that forms between core pipe and locking nut, it is characterized in that: the opening more than three or three is set on the described positive C ring that is actively socketed on the C type retainer ring on the core pipe, and this retainer ring inwall is provided with horizontal fin and vertical fin.

As further specifying of such scheme, the longitudinal section of described C type retainer ring is set to 15 °～50 ° at front interior angle, the trapezoid cross section that back side interior angle is 40 °～65 °.

The internal thread of described nut and corresponding main pipe body outside thread are set to swing to sawtooth pattern.

Described core pipe is provided with the reversal of the natural order of things tooth, and the core seal of tube circle that inlay in this reversal of the natural order of things tooth outside is the semicircular ring seal ring.

The height of described fin is 0.4mm or more than the 0.4mm.

Described multiunit tube joint adopts composite plastic.

The beneficial effect that the utility model adopts above-mentioned technical solution to reach is:

1, the utility model adopts on the core pipe reversal of the natural order of things tooth is set, C type retainer ring is actively socketed in the toroidal cavity that forms between core pipe and locking nut and on the positive C ring of this retainer ring a plurality of openings is set, the longitudinal section of retainer ring is trapezoidal, and horizontal fin and vertical fin are set at the inwall of retainer ring, strengthen the frictional force between pipe fitting and the tubing, prevent that effectively the tubing that is enclosed within on the core pipe from coming off.

2, the raw material of this pipe fitting adopt composite plastic, the cost of product is reduced greatly, the internal thread of nut and corresponding main pipe body outside thread are set to swing to sawtooth pattern, and the tensile resistence after making pipe fitting and tubing being connected is effectively improved, and reaches the stretching resistance requirement of copper spare.

Description of drawings

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

Fig. 2 is the perspective view of C type retainer ring.

Description of reference numerals: 1, adapter body 2, core pipe 3, core seal of tube circle 4, C type retainer ring 5, locking nut 6, toroidal cavity 7, reversal of the natural order of things tooth 8, opening 9, horizontal fin 10, vertical fin

Embodiment

As Fig. 1, shown in Figure 2, the utility model aluminium-plastics composite pipe joint, comprise adapter body 1, core pipe 2, core seal of tube circle 3, C type retainer ring 4 and locking nut 5, the outside thread of joint core pipe 2 and the internal thread interlock of locking nut 5, the internal thread of nut 5 and corresponding main pipe body 1 outside thread are set to swing to sawtooth pattern, C type retainer ring 4 is actively socketed in the toroidal cavity 6 of core pipe 2 and 4 formation of locking nut, described core pipe 2 is provided with reversal of the natural order of things tooth 7, the core seal of tube circle 3 that inlay in these reversal of the natural order of things tooth 7 outsides is the semicircular ring seal ring, the longitudinal section that is actively socketed on the C type retainer ring 4 on the core pipe 2 is set to 15 °～50 ° at front interior angle, the trapezoid cross section that back side interior angle is 40 °～65 °, opening 8 more than three or three is set on the positive C ring of this retainer ring 4, inwall is provided with horizontal fin 9 and vertical fin 10, the fin height is 0.4mm or more than the 0.4mm, and described multiunit tube joint adopts composite plastic.

In the using process, C type retainer ring is socketed in the toroidal cavity that forms between core pipe and locking nut, under the effect of locking nut, tubing is produced the compressing power of tightening up, make the trim ring inwall fin of positive plum blossom shape all be pressed into the surface of tubing, after pipe part connects, no matter will firmly wave about tubing, still the front stretches with sudden force, and pipe part is not all stirred a finger.

Claims

1, a kind of aluminium-plastics composite pipe joint, comprise adapter body (1), core pipe (2), core seal of tube circle (3), C type retainer ring (4) and locking nut (5), the internal thread interlock of the outside thread of joint core pipe (2) and locking nut (4), C type retainer ring (4) is actively socketed in the toroidal cavity (6) that forms between core pipe (2) and locking nut (5), it is characterized in that: described C type retainer ring (4) inwall that is actively socketed on the core pipe (2) is provided with horizontal fin (10) and vertical fin (11).

2, aluminium-plastics composite pipe joint according to claim 1 is characterized in that: the opening (9) more than three or three is set on the positive C ring of described C type retainer ring (4).

3, aluminium-plastics composite pipe joint according to claim 1 and 2 is characterized in that: the longitudinal section of described C type retainer ring (4) is set to 15 °～50 ° at front interior angle, the trapezoid cross section that back side interior angle is 40 °～65 °.

4, aluminium-plastics composite pipe joint according to claim 1 is characterized in that: described core pipe (2) is provided with reversal of the natural order of things tooth (7), and the core seal of tube circle (3) that inlay in this reversal of the natural order of things tooth (7) outside is the semicircular ring seal ring.

5, aluminium-plastics composite pipe joint according to claim 1 is characterized in that: the internal thread of described locking nut (4) and corresponding main pipe body (1) outside thread are set to swing to sawtooth pattern.

6, aluminium-plastics composite pipe joint according to claim 1 is characterized in that: the height of described fin is 0.4mm or more than the 0.4mm.

7, aluminium-plastics composite pipe joint according to claim 1 is characterized in that: described multiunit tube joint adopts composite plastic.