CN2462207Y

CN2462207Y - Union joint

Info

Publication number: CN2462207Y
Application number: CN 00232132
Authority: CN
Inventors: 牛惠临
Original assignee: KAITAI PIPE-MAKING (SUZHOU) Co Ltd
Current assignee: KAITAI PIPE-MAKING (SUZHOU) Co Ltd
Priority date: 2000-10-10
Filing date: 2000-10-10
Publication date: 2001-11-28
Anticipated expiration: 2010-10-10

Abstract

The utility model relates to a union joint used for connecting of aluminum plastic composite tubes or plastic tubes, which comprises a union joint body, a casing body and sealing rings. A plurality of ring grooves are arranged on the casing body, the ring grooves are sheathed with high elastic sealing rings, a crimping ring is arranged outside the casing body, and a pipe body can be embedded between the crimping ring and the casing body. Because the high elastic sealing ring is adopted, so the functions of the union joint are not affected by material heat expansion and cold contraction. At the same time, the utility model has the advantages of great tensile strength, small volume, simple construction and accordance with the requirements of construction industry.

Description

Pipe joint

The utility model relates to a kind of pipe joint, and this pipe joint is applicable to the connection of aluminium-plastic composite pipe and plastic tube.

The utility model is different with the conventional iron pipe joint: it need not processing at the scene, can be direct, easy, fast, combine with body securely.

Kai Tai company develops the pipe joint that is used for aluminium-plastic composite pipe and plastic tube already, and one of them is disclosed in the Chinese patent 93206405.This joint sealing performance is good, and adhesive strength is big, at home and abroad widespread usage in engineering circle.But engineering circle wishes generally that also existing pipe joint is at volume, price, improved further the aspects such as convenience of being suitable for of the pipeline of big caliber, assembling.

The utility model purpose is to provide that a kind of volume is little, processing is convenient, the pipe joint of easy construction.

Pipe joint of the present utility model has pipe joint body, engaging body and seal ring, it is characterized in that engaging body is provided with a plurality of annular grooves, is with seal ring on the annular groove, and engaging body also has crimp rings outward, can embed body between crimp rings and the engaging body.When assembling with body wedge pressure T-Ring and engaging body between, and utilize crimping tool to make the crimp rings compression make and body and engaging body closely cooperated with body.

Aforesaid pipe joint is characterized in that: crimp rings is provided with window, and the front end mouth of pipe has bent angle, and the rear end is a horn mouth.

Aforesaid pipe joint is characterized in that: seal ring is two.

Aforesaid pipe joint is characterized in that: there are five circle annular grooves on the engaging body surface.

Aforesaid pipe joint is characterized in that: seal ring is heat-resisting, elastomeric food silicon rubber loop.

Aforesaid pipe joint is characterized in that: seal ring is enclosed in from first, fourth annular groove of outer terminal number.

The advantage that the utility model has kept existing various aluminium-plastic composite pipe or plastic tube pipe joint to be had is also improved more existing defectives in them simultaneously.The utlity model has watertight characteristic under the big situation of temperature variation, it also has advantages such as tensile strength is big, volume is little, manufacturing is simple and easy, the joint body external diameter is close with caliber, cheap simultaneously.

Fig. 1 is the utility model embodiment's an assembly decomposing schematic representation.

Fig. 2 is the utility model embodiment's an assembling schematic representation.

Fig. 3 is the sectional arrangement drawing of Fig. 2.

Below in conjunction with accompanying drawing embodiments of the present invention are further described.

As shown in the drawing, the pipe joint of this mode of execution of the utility model comprises pipe joint body (10), engaging body (20), crimp rings (30), high elasticity seal ring (40).Wherein, the visual user's of pipe joint body (10) real needs are made into various forms and size for use.Crimp rings (30) is an oval tubular sleeve pipe, can embed body (50) between itself and the engaging body (20).Crimp rings (30) the front end mouth of pipe has a bent angle (31), is used to prevent exceed outside the ring when body from inserting.Crimp rings (30) is provided with a circular window (32), is used for inspecting body and whether is inserted into fixed position before the aluminium hydraulic pressed connecting pipe joint, prevents that body from not getting loose before crimping is finished and do not reach safe crimping critical field.In addition, the crimp rings rear end is loudspeaker (33) shape, is used to make things convenient for the body particularly full circle and the insertion of aluminium-plastic composite pipe body.

Five annular grooves on engaging body (20), have been designed.In annular groove, for example be from first, fourth annular groove of outer terminal number, be placed with two high elasticity seal rings (40), sealing circle dimpling is for the engaging body surface.

Above-mentioned high elasticity seal ring is heat-resisting, elastomeric food silicon rubber loop, wear-resisting and good weatherability.Can prevent between body and the joint because of thermal expansion coefficient different issuable clearance leakage when too high or too low for temperature.

During assembling, the body of crimping is inserted crimp rings (30) lining, inspect and be inserted into again on the engaging body (20) after whether body is inserted into safe position location.Then, pipe joint is packed in the crimping chuck that designs, and can inspect outside the safety crimping critical field that in installation process, whether gets loose by circular window (32).The crimping chuck promptly unclamps after being depressed to predetermined crimping pressure range automatically, and uneven ground closely is entrenched togather between crimp rings, body and the engaging body, can not leak because of expanding with heat and contract with cold under operating conditions or comes off because of the external force influence.The fastening pressure of each joint is identical.

Pipe joint of the present utility model can be forms such as two energy, threeway.

Claims

1, a kind of pipe joint, it has: pipe joint body (10), engaging body (20) and seal ring (40) is characterized in that: be provided with a plurality of annular grooves on engaging body (20), be with seal ring (40) in the annular groove; Engaging body (20) is outer crimp rings (30), can embed body (50) between crimp rings (30) and the engaging body (20).

2, according to the described pipe joint of claim 1, it is characterized in that: crimp rings is provided with window (32), and the front end mouth of pipe has bent angle (31), and the rear end is horn mouth (33).

3, according to claim 1,2 described pipe joints, it is characterized in that: seal ring is two.

4, according to the described pipe joint of claim 3, it is characterized in that: there are five circle annular grooves (21-25) on the engaging body surface.

5, according to the described pipe joint of claim 3, it is characterized in that: seal ring is heat-resisting, elastomeric food silicon rubber loop.

6, according to the described pipe joint of claim 4, it is characterized in that: seal ring is enclosed in from first, fourth annular groove of outer terminal number.