CN2391081Y

CN2391081Y - Pipe joint

Info

Publication number: CN2391081Y
Application number: CN 99242861
Authority: CN
Inventors: 冯健
Original assignee: LINGYU PIPE FITTING CO Ltd ZHUJI CITY
Current assignee: LINGYU PIPE FITTING CO Ltd ZHUJI CITY
Priority date: 1999-09-09
Filing date: 1999-09-09
Publication date: 2000-08-09
Anticipated expiration: 2009-09-09

Abstract

The utility model relates to a pipe joint used for connecting aluminium-plastic combined pipes and PEX pipes, which is composed of a nut, a flat pad, a pressing pad, an O type ring, a main joint body and an elastic taper sleeve. The O type ring is arranged in the sealing groove of the joint main body. The pressing pad is arranged between the sealing ring and a self-tightening groove. When media press the O type ring harder, the dynamic sealing effect can be generated to make the O type ring have the sealing effect of combining stillness and movement together, therefore, to increase the sealing performance of the pipe joint.

Description

A kind of pipe joint

The utility model relates to the pipe joint of aluminium-plastic composite pipe or the connection of PEX pipe.

Aluminium-plastic composite pipe and PEX pipe replace original steel, copper and pvc pipe material gradually in the caliber engineering, satisfy the needs of industrial and agricultural production and people's lives.In existing technology, aluminium-plastic composite pipe, PEX pipe joint, the more employing pipe internal diameter of especially little drive connector is provided with sleeve, the linkage structure of external diameter clip chucking, thereby the latus rectum flow of the medium that influence is carried, in addition, the joint sealing technology adopts Sealing mechanical compaction structure, when the temperature and pressure of fed sheet of a media changes greatly, and this " extremely " sealing that can not thereupon change, occur seal ruptures easily, cause dielectric leakage.

To this, the utility model provides a kind of aluminium-plastic composite pipe and PEX pipe joint of self-tightening sealing, its objective is in order to overcome the above-mentioned defective that existing pipe joint exists.

Technical conceive scheme of the present utility model is described below: whole pipe joint is by nut, flat gasket, compress gasket, O type circle, adapter body and elastic conical drogue are formed, the adapter body inner chamber is processed with seal groove and self-tightening chamber respectively, O type circle places seal groove, is provided with compress gasket between seal groove and self-tightening chamber, and flat gasket and adapter body end face compress, the elastic conical drogue outer surface engages with the nut internal surface, and nut is threaded with adapter body.

The good effect that the utility model brings is: cancellation caliber sleeve, and the rate-of flow loss reduces, the seal ring static sealing effect that is squeezed, when pressure medium increases, medium enters the self-tightening chamber, and by the compress gasket compresses seal, pressure is big more, sealability is good more, form the motive sealing effect, same O type circle produces two kinds of sealing effects of quiet, moving combination, has compact structure, the advantage that good seal performance, cost of production are low again.

Below, description in conjunction with the accompanying drawings and embodiments further describes technology contents of the present utility model.

Fig. 1 is the utility model topology view.

The pipe 8 that the utility model assembling connects, pass through nut 1 respectively, the inner chamber of elastic conical drogue 2, insert adapter body 7, position by pipe 8 outer rings and end face, flat gasket 3 places between elastic conical drogue 2 and adapter body 7 both ends of the surface, O type circle 4 places the seal groove of adapter body 7, between O type circle 4 and self-tightening groove 6 compress gasket 5 is arranged, the outer surface of elastic conical drogue 2 engages with the internal surface of nut 1, as shown in Figure 1, nut 1 is threaded with adapter body 7, nut 1 is screwed into slowly, and elastic conical drogue 2 roof pressure flat gaskets 3 make pipe 8 and adapter body 7 fastening being located by connecting.

Claims

1, a kind of pipe joint, form by nut, flat gasket, compress gasket, O type circle, adapter body and elastic conical drogue, it is characterized in that: adapter body (7) inwall has seal groove and self-tightening chamber (6), O type circle (4) to put in seal groove, between O type circle (4) and self-tightening chamber (6) compress gasket (5) is arranged.

2, by the described a kind of pipe joint of claim 1, it is characterized in that flat gasket (3) is between adapter body (7) end face and elastic conical drogue (2) end face.

3,, it is characterized in that the internal surface of the same nut of elastic conical drogue (2) outer surface (1) engages by the described a kind of pipe joint of claim 1.