CN2509423Y

CN2509423Y - Steel & plastic composite pipeline connecting element

Info

Publication number: CN2509423Y
Application number: CN 01254765
Authority: CN
Inventors: 倪岩友
Original assignee: Individual
Current assignee: Ye Chengbiao
Priority date: 2001-11-16
Filing date: 2001-11-16
Publication date: 2002-09-04
Anticipated expiration: 2011-11-16

Abstract

The utility model relates to a steel and plastic composite pipeline connecting element, consisting of a pipe material and a pipe element. The pipe element is divided into an undertaking head body and a nut; the pipe material is steel and plastic composite pipe whose pipe mouth is an enlarged trumpet-shaped mouth; the undertaking head body is a cone head which inserts into the trumpet-shaped mouth of the composite pipe; the nut is provided a with inner hole with a certain conicity which is matched with the outer wall of the trumpet-shaped mouth of the pipe material. The undertaking head body of the pipeline connecting element of the utility model inserts into the pipe mouth; when the nut and the crew threads of the undertaking head body rotate, the cone head of the undertaking head body is extruded inwards to the pipe mouth on one hand, and in other hand the conicity inner hole of the nut extrudes the outer wall of the pipe mouth; the pipeline is clamped tightly through interior and exterior. Therefore, the utility model has high connecting firmness and good sealing performance, which does not cause damage to the pipe material; furthermore, the pipe material is made composited by metal such as steel plastic or aluminum plastic and plastic, so that the mechanical intensity is good and the service life is long after connection.

Description

Steel-plastic composite pipe pipeline connecting parts

Technical field

The utility model relates to the supplying drainage pipeline connecting parts, belongs to structural material, can be widely used in private residence, hotel, office building and the factories and miness building.

Background technique

In the giving of modern architecture, discharge pipe line, use plastic pipes fitting in a large number.According to the application site difference, pipe fitting commonly used has directly, tiltedly, elbow connection, with footpath, reducer fitting, two logical, threeway, cross fitting etc. are various in style.Because plastic tube is unsuitable for the hinge screw thread, so various pipe fittings are class quick pipe connectings with being connected of tubing, the quick plastic pipe joint of prior art is the straight hole pipe because of the head of tubing, after bearing head body inserts pore, relies on the compressing that screws of nut to reach the connection purpose fully, described here screwing is to make pipe reach the degree of distortion, therefore, not only sealability is difficult to satisfy the demand, and makes the pipe oral area be subjected to certain damage, time one is long, just seriously influences working life.Be that existing tube material is simple plastics on the other hand, strength character is poor.

Summary of the invention

The utility model is in order to overcome the defective of existing plastic tube and pipe fitting joint structure, to provide a kind of connection reliable steel-plastic composite pipe pipeline connecting parts.The technological scheme of described steel-plastic composite pipe pipeline connecting parts is: be made up of tubing and pipe fitting, pipe fitting is divided into bearing head body and nut, it is characterized in that described tubing is metal and plastic composite pipe, the mouth of pipe of composite pipe is the tubaeform mouth that expands the chamber, described bearing head body is a conical nose, conical nose inserts in the tubaeform mouth of composite pipe, and described nut is shaped on the endoporus of tapering, and the tapering endoporus matches with tubaeform mouthful outer wall of tubing.In actual product, its described composite pipe is that steel is moulded or aluminium-plastic composite pipe, and each composite pipe is made tubaeform mouthful.Between the conical nose of tubaeform mouthful and the bearing head body of tubing, seal ring is installed.Because the mouth of pipe of its tubing expands into tubaeform mouthful, bearing head body inserts in the mouth of pipe, and after the screw thread rotation of nut and bearing head body, the conical nose with bearing head body squeezes in the mouth of pipe on the one hand, the tapering endoporus line up outer wall of nut extruding on the other hand, by inside and outside clamping, therefore, connect the fastness height, good seal performance, and tubing is not caused damage, add that again tubing is that steel is moulded or plastic-aluminum combined forming the long service life after the connection.

Description of drawings

Fig. 1 is embodiment's schematic representation of the utility model steel-plastic composite pipe pipeline connecting parts.

1, bearing head body; 2, nut; 3, seal ring; 4, steel is moulded or aluminium-plastic composite pipe; 5, tubing is tubaeform mouthful; 6, the conical nose of bearing head body; 7, the tapering endoporus of nut.

Embodiment

The utility model relates to a kind of steel-plastic composite pipe pipeline connecting parts, the tubing of essential structure and pipe fitting, the shape and the pattern of pipe fitting comprise all kinds, bearing head body 1 and the nut 2 made as straight, curved, oblique two logical, threeway, four-way or the like, described tubing is the composite pipe 4 that metal and plastics are made, the mechanical strength height, performance is good, mainly adopts steel to mould or aluminium-plastic composite pipe.Maximum characteristics are that the mouth of pipe of composite pipe 4 is the tubaeform mouths 5 that expand the chamber, pipe fitting matches with this tubaeform mouthful, so bearing head body 1 is a conical nose 6, conical nose 6 inserts in the tubaeform mouth 5 of composite pipe, be shaped on the endoporus 7 of tapering in its nut 2, tapering endoporus 7 matches with tubaeform mouthful 5 outer wall of tubing.And between the tubaeform mouth 5 of tubing and the conical nose 6 of bearing head body seal ring 3 is installed.To the inside and outside clamping of tubaeform mouthful tube wall, not the one-side external compression of prior art during installation, thus good airproof performance not only, and to pipe non-invasi, long service life.Add that again steel is moulded or aluminium-plastic composite pipe, make technology reach perfect level.

Claims

1, steel-plastic composite pipe pipeline connecting parts, formed by tubing and pipe fitting, pipe fitting is divided into bearing head body and nut, it is characterized in that described tubing is the composite pipe (4) of metal and plastics, the mouth of pipe of composite pipe is tubaeform mouthful (5) expanding the chamber, and described bearing head body (1) is conical nose (6), and conical nose (6) inserts in the tubaeform mouth of composite pipe (5), described nut (2) is shaped on the endoporus (7) of tapering, and tapering endoporus (7) matches with the outer wall of tubaeform mouthful (5) of tubing.

2, steel-plastic composite pipe pipeline connecting parts as claimed in claim 1 is characterized in that described composite pipe is that steel is moulded or aluminium-plastic composite pipe.

3, steel-plastic composite pipe pipeline connecting parts as claimed in claim 1 is characterized in that between the conical nose (6) of tubaeform mouthful (5) of tubing and bearing head body seal ring (3) being installed.