CN2553225Y

CN2553225Y - Special-purpose blocking composite copper-plastic pipe fitting for aluminium plastic pipe

Info

Publication number: CN2553225Y
Application number: CN 02268266
Authority: CN
Inventors: 漆烨; 徐敬成; 方三全
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-18
Filing date: 2002-07-18
Publication date: 2003-05-28
Anticipated expiration: 2012-07-18

Abstract

The utility model provides a locking composite copper plastic pipe fittings for aluminum plastic pipe, comprising a body, a screw cap, a snap ring, a flat O-ring seal, a round O-ring seal, an upright O-ring seal and a copper inner sleeve, wherein, the flat O-ring seal is arranged in a rear groove, and contacted with the cross section of the pipe through extrusion; the round O-ring seal is arranged on a seal boss on the inner side of an outside screw wall, and contacted with the snap ring and the outer wall of the pipe through extrusion under the action of a compression bar of the screw cap; the upright O-ring seal is arranged in a groove of a body plug, the outer screw wall of the body is arranged in a front groove of the screw cap; the pipe is deadlocked by the snap ring. The utility model is characterized in triple sealing and leakage prevention system and double circular deadlock anti-drop structure. The utility model has the advantages of reasonable design, simple structure, easy manufacture, compact size, low cost, good connection and sealing performance, convenient installation and use and good popularization and application value due to thoroughly solved connection problem of aluminum plastic pipe.

Description

The special-purpose enclosed type complex copper of plastic-aluminum pipe plastic pipe

1, technical field

The utility model relates to a kind of building water supply pipe joint, the specifically a kind of special-purpose enclosed type complex copper of plastic-aluminum pipe plastic pipe that is exclusively used in aluminium-plastic composite pipe.

2, technical background

Aluminium-plastic composite pipe is one of three kinds of new chemical plastic water supply pipe road materials of nation-building subordinate literary composition popularization, is the appointment substitute products of eliminating Coating Steel Pipe at present.The special-purpose connection pipe fitting of existing aluminium-plastic composite pipe---copper pipe fitting adopts the nesting type structure design, principle is after pipe is inserted pipe fitting joint, by screwing nut C shape copper ring is squeezed, force plastic-aluminum pipe generation deformation to embed in the prefabricated Baltimore groove of joint outer rim and form sealing effect, the inside and outside tube wall of the common clamping of C shape copper ring and joint simultaneously prevents the pipe and joints slippage.This pipe fitting exists the defective that confeuses the parimary with secondary, puts the cart before the horse on project organization and sealing principle, leakage problems very easily takes place after making the plastic-aluminum pipe install, even the supervisor call obscission appears again and again, furthermore the pipe fitting cost of fine copper material is very expensive, be several times as much as the pipe fitting of similar substitute products, make the marketing of plastic-aluminum pipe run into serious obstacle, the development stride of numerous plastic-aluminum pipe enterprise is little difficult, has caused serious economy loss for enterprise and country.

3, summary of the invention

The purpose of this utility model provides a kind of brand-new plastic-aluminum pipe special connecting piece that can fundamentally thoroughly solve plastic-aluminum pipe connectivity problem---the special-purpose enclosed type complex copper of plastic-aluminum pipe plastic pipe.

The purpose of this utility model realizes in the following manner, pipe fitting body and nut are all made with high strength, plastics injection anti-aging, that heat resistance is good, in embedding a thin-walled copper, overlaps pipe fitting body internal layer, the pipe fitting of band copper insert, the cover cast inblock is made in copper insert and the copper, process a groove in the outer rim of body socket joint head upright O packing ring is set, insert the socket joint head at pipe, cross section over against the pit position one flat O packing ring is set, spiral shell wall inner edge designs a platform and is used to settle round O packing ring outside, compresses at circle O packing ring and nut and adds a snap ring between bar.The special-purpose enclosed type complex copper of plastic-aluminum pipe of the present utility model plastic pipe is characterized in that moulding two kinds of compound making of material by copper, and its linkage structure is formed " dual locking locking anti-drop structure " by stuck fixing tube of snap ring and the locking of pipe fitting thread systems; Sealing configuration is formed " the triple seal leakage proof system " of organic cooperation jointly by the round O packing ring of the upright O packing ring of socket joint head outer rim gasket groove position, the flat O packing ring of pipe fitting pit position, outer spiral shell wall inboard.

Accompanying drawing 1 partly cuts open structural representation for the special-purpose enclosed type complex copper of plastic-aluminum pipe plastic pipe;

Accompanying drawing 2 is the special-purpose enclosed type complex copper of a plastic-aluminum pipe plastic pipe main body structure schematic representation;

4, description of drawings

With reference to Figure of description to Special-purpose blocking composite copper-plastic pipe fitting for aluminium plastic pipe of the present utility model do with Under explain.

Special-purpose blocking composite copper-plastic pipe fitting for aluminium plastic pipe of the present utility model, its structure are by body 1, spiral shell Cap 2, snap ring 3, flat O packing ring 4, circle O packing ring 5, vertical O packing ring 6, copper inner sleeve 7 consist of.

Settle vertical O packing ring 6 at gasket groove of the present utility model 13 places, settle circle O pad at packing ring platform 12 places Circle 5 is placed flat O packing ring 4 in pit 11 positions, and nut 2 and snap ring 3 are enclosed within cut pipe 10 An end and the accurate position of location snap ring 3, with the snap ring 3 of pawl outside the stuck and locking pipe 10 Wall can not come off it, and pipe 10 is inserted pit 11 straight, to the flat O of its cross section and bottom land Packing ring 4 Surface Contacts, at this moment, the susceptor surface of snap ring 3 should just and be justified O packing ring 5 on the packing ring platform 12 Upper surface contact, tightening nuts 2 makes the front end that compresses bar 8 prop up snap ring 3, along with nut 2 not Disconnected being tightened compresses bar 8 and props up snap ring 3, and extruding circle O packing ring 5 synchronously, and pipe 10 cross sections then together Step extrusion of flat O packing ring 4, and finally reach sealing effectiveness. Like this, pipe 10 places when inserting Vertical O packing ring 6 on the gasket groove 13 is extruded deformable seal automatically, and it is anti-to form first at tube wall The seepage barrier, flat O packing ring 4 deformable seals of pipe 10 cross sections extruding pit 11 positions realize second Road antiseep barrier, round O packing ring 5 distortion on the snap ring 3 extruded gasket platforms 12, and shape between the pipe outer wall Become three seals antiseep barrier, and snap ring 3 stuck locking pipes 10, nut 2 is tightened fixing On pipe fitting body 1, thereby form " triple seal leakage proof system " and " dual locking locking Anti-drop structure ".

5, mode of execution

Its processing and fabricating of the special-purpose enclosed type complex copper of plastic-aluminum pipe of the present utility model plastic pipe is very simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.The production technology of the special-purpose enclosed type complex copper of plastic-aluminum pipe of the present utility model plastic pipe can adopt very ripe in the industry " plastics injection method " and " casting process " explained hereafter, need not special device.

The special-purpose enclosed type complex copper of plastic-aluminum pipe of the present utility model plastic pipe is compared with prior art, have reasonable in design, simple in structure, be easy to processing, volume is little, cost is low, connect good seal performance, characteristics such as easy to install, can fundamentally thoroughly solve the connectivity problem of plastic-aluminum pipe.Thereby, have good value for applications.

Except that the described technical characteristics of specification, be the known technology of those skilled in the art.

Claims

1. the special-purpose enclosed type complex copper of plastic-aluminum pipe plastic pipe, comprise cover in body, nut, snap ring, flat O packing ring, circle O packing ring, upright O packing ring, the copper, it is characterized in that flat O packing ring is arranged in the pit, contact with the extruding of pipe cross section, circle O packing ring is arranged on the packing ring platform of outer spiral shell wall inboard, compress at nut under the effect of bar and contact with snap ring, tube outer wall extruding, upright O packing ring is arranged on the gasket groove of body socket joint head and contacts with the tube wall extruding, snap ring blocks tube outer wall, and this external Luo Bi is before nut in the groove.