CN2675993Y

CN2675993Y - Pipe connection

Info

Publication number: CN2675993Y
Application number: CN 200420015306
Authority: CN
Inventors: 伍剑海
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-02-09
Filing date: 2004-02-09
Publication date: 2005-02-02
Anticipated expiration: 2014-02-09

Abstract

The utility model provides a pipe joint comprising a nut, a pipe fitting and a sealing element. The pipe joint is characterized in that the pipe joint comprises an expanded pipe joint which is composed of a connection element (2), an expanded pipe fitting (3), a compact element (4), a cone element (5), the sealing element (6) and a blocking ring (7). The connection element (2) comprises two sections of screws, one section of screws is connected with a connection pipe (1), and the other section of screws is connected with screws on one end of the expanded pipe fitting. The other end of the expanded pipe fitting is provided with an inner cone bore (10) which is matched with the cone element, the inner cone bore of the expanded pipe fitting is provided with a groove (9), the cone element (5) is composed of two or more than two cone rings, and the cone element (5) which is corresponding with the inner cone bore of the expanded pipe fitting is arranged in a concave ring of the connection element. The sealing element next to the end surface of the big end of the cone component is arranged on the outer circle of the connection element (2), and the blocking ring which contacts with the end surface of the sealing element is arranged in the concave ring of the connection element. The compact element (4) is a section of circle ring, the diameter of the circle ring is larger than the outer diameter of the connection pipe, the circle ring is sheathed in one end of the expanded pipe fitting which is provided with the inner cone bore.

Description

Pipe joint

Technical field:

Pipe joint belongs to the tubing joint, is applicable to the connection of water pipe, tracheae especially.

Background technique:

Present pipe joint all will machining screw, usefulness nut, pipe fitting, Sealing connection then on connecting tube.So when adapter was refuted in maintenance, particularly field construction needed to be equipped with machining screw cutter and other instrument.These instruments weigh greatly, increase transportation difficulty and construction.And connection mouth easily leaks, and need do over again, and influences repair quality.

Summary of the invention:

Pipe joint will solve and not adopt the technical problem that is threaded on connected tube.

Pipe joint adopts the way of the inside and outside footpath of mouth of pipe account being forced tightening seal greatly.

Pipe joint contains nut, pipe fitting, Sealing, and its feature has expanded tube joint, it by link, expand tube spare, cone piece, force tight part, Sealing, ring washer to form; Link has two sections screw threads, and wherein one section is connected with connecting tube or pipe fitting, and another section is threaded with expand tube spare one end, and the expand tube spare the other end has internal taper hole or circular hole and cone piece to be used, and the internal taper hole section of expand tube spare has groove, so that internal taper hole Peng is expanded; Cone piece is made up of two or several conical rings, and it is installed in the scrobicular ring place of link, and is corresponding with expand tube spare internal taper hole; The big end end face of cone piece is other to have Sealing to be installed on the link cylindrical, and ring washer is at the scrobicular ring place of link, and contact seal part end face; Forcing tight part is one section annulus, and the straight Trail of its endoporus is bigger slightly than the outer Trail of connected tube, and it is enclosed within the end that expand tube spare has internal taper hole.

Force tight part and expand tube spare can make an integral body.

Cone piece and link can be made an integral body.

The utility model is simple in structure, make can not machining screw thin walled tube also can be used as connected tube, use easy to carryly, attachment security is reliable.

Description of drawings:

Fig. 1 is the pipe joint erection drawing.

Fig. 2 is an expand tube spare plan view.

Fig. 3 is an expand tube spare left view.

Fig. 4 is the cone piece sectional view.

Fig. 5 is the cone piece left view.

1, connecting tube 2, link 3, expand tube spare 4, force tight part 5, cone piece 6, Sealing 7, ring washer 8, connected tube 9, groove 10 internal taper holes,

Embodiment:

The structure that connects of pipe joint now is described with a specific embodiment.

Fig. 1 has shown the structure and the structure of each part of pipe joint, link 2, expand tube spare 3, forces tight part 4, circular cone ring 5, Sealing 6, ring washer 7.Fig. 2, the 3rd, expand tube spare 3 structural drawing, taper hole has been opened four rectangular slots for 10 sections within it.Fig. 4, the 5th, cone piece 5 diagrammatic sketch, it is made up of the conical ring of two halves, is installed in the scrobicular ring place of link 2.

Connection procedure is: earlier pipe fitting is screwed on the connecting tube 1, at the screw thread that expand tube spare 3 is screwed into link 2, then cone piece 5, Sealing 6, ring washer 7 are installed on the link 2, force tight part 4 to be enclosed within on the expand tube spare 3, connected tube 8 is inserted force between tight part and the expand tube spare, then, make and force tight part to advance to the big end of cone piece, so expand tube spare internal taper hole 10 swells, simultaneously the inside and outside footpath of connected tube 8 mouths of pipe account is forced greatly closely to be encapsulated in and force between tight part 4 and the expand tube spare 3.Sealing plays sealing, and ring washer prevents that Sealing from retreating.

Claims

1, pipe joint contains nut, pipe fitting, Sealing, and its feature has expanded tube joint, it by link (2), expand tube spare (3), force tight part (4), cone piece (5), Sealing (6), ring washer (7) to form; Link (2) has two sections screw threads, wherein one section is connected with connecting tube (1), and another section is threaded with expand tube spare one end, and the expand tube spare the other end has internal taper hole (10) or circular hole and cone piece to be used, the internal taper hole section of expand tube spare has groove (9), so that internal taper hole Peng is expanded; Cone piece is made up of two or several conical rings, and it is installed in the scrobicular ring place of link, and is corresponding with expand tube spare internal taper hole; The big end end face of cone piece is other to have Sealing to be installed on the link cylindrical, and ring washer is at the scrobicular ring place of link, and contact seal part end face; Forcing tight part is one section annulus, and its diameter of bore is bigger slightly than the external diameter of connected tube, and it is enclosed within the end that expand tube spare has internal taper hole.

2,, it is characterized in that forcing tight part (4) and expand tube spare (3) can make an integral body according to the said pipe joint of claim 1.

3,, it is characterized in that cone piece (5) and link (2) can make an integral body according to claim 1 or 2 said pipe joints.