CN2203392Y

CN2203392Y - Pipe connection device

Info

Publication number: CN2203392Y
Application number: CN 94236004
Authority: CN
Inventors: 贾庭山
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-16
Filing date: 1994-12-16
Publication date: 1995-07-12
Anticipated expiration: 2004-12-16

Abstract

The utility model relates to a pipe connection device, belonging to a mechanical system. The pipe connection device is composed of a screw-threaded joint < 3 >, a tapered screw cap < 1 >, a chucking ring < 2 >, and an O-shaped ring < 4 >. The outside of the middle section of the screw-threaded joint is a hexagon; the upper outside and the lower outside of the hexagon are threads; the hexagon of the base of fine threads on a lower end is provided with a groove; bastard threads on an upper end are provided with a space and a branch pipe in the center. One end of the branch pipe of the screw-threaded joint is externally connected with internal threads and is coincident with the internal threads; the top end of the tapered screw cap is an external conical surface; the column surface of the internal side of the external conical surface is provided with an annular groove; the middle part of the internal side of the tapered screw cap is a conical surface. The chucking ring is arranged on the internal conical surface of the tapered screw cap. The utility model has the advantages of simple structure, convenient use, and favorable sealing effect.

Description

Pipe connection device

The utility model belongs to a kind of pipe tipping of mechanical system and puts.

In various pipes being coupled to each other in use, use electric welding usually, screw thread, flanged joint etc., electric welding is used more in large-scale fixing tube, but operation inconvenience, screw thread, joint, flange etc. are easy to use, but seal relatively poor, need add and fill out circle, but also have the complicated problem of operation, especially hour in the more occasion of joints such as vehicle and operating space, workload is big again, time-consuming many, very not convenient, cause working efficiency low.

The purpose of this utility model provides a kind ofly can insert pipe easily, and the pipe coupling arrangement of good sealing effect again.

A kind of pipe connection device, it is characterized in that by a cross section be stepped shape, the outside, stage casing is a hexagon, the hexagon outside up and down is a screw thread, the upper end has living space in the screw thread and an arm is arranged at the center, there is the inipple ［ 3 ］ of an annular recess at the hexagon place of lower end threaded base portion, the external internal thread of arm one end of inipple and its outside, top that coincide are the conical surface, the inboard cylinder of male cone (strobilus masculinus) has an annular groove, the annular groove bottom, it before the top smooth section of internal thread the tapered cup nut ［ 1 ］ of an inner conical surface, near the inner conical surface place one cross section being arranged is spearhead shape, and with bail wire ［ 2 ］ and the bail wire rear end that inner conical surface coincide, one section screw thread place of inipple band arm root, two interior different O shape circles ［ 4 ］ of four big or small thicknesses of annular groove are formed.

This bail wire is an annulus that jagged slightly discontinuous cross section is a lance shape.The major diameter of thread that the band arm is one section is than the major diameter of thread with one section of arm is not thick slightly.

The utility model has the advantages that simple in structure, easy to use, good sealing effect.

Accompanying drawing is the structural representation of pipe coupling arrangement, 1-tapered cup nut wherein, 2-bail wire, 3-inipple, 4-O shape circle.

Installation and processing using method of the present utility model is after getting the tubing intercepting Len req of required wall thickness, the stage casing is dug and is milled into Six Point, the outer sidecar of two ends becomes the screw thread of various outer diameter, get on the bus on the base portion hexagon plane of fine thread or mill out an annular groove, at the top four of coarse-pitch thread one end or mill out arm, and arm is extended to hexagonal middle part form a space in screw thread, the tubing top car of sawing one section desired thickness again becomes male cone (strobilus masculinus), the bottom inside car becomes the screw thread that coincide with the inipple coarse-pitch thread, screw thread is the cylndrical surface for anterior one section, cylndrical surface and male cone (strobilus masculinus) are conical surfaces between inboard cylndrical surface, the tapered cup nut of sidecar one annular groove in the male cone (strobilus masculinus), the cross section that coincide of male cone (strobilus masculinus) of car and tapered cup nut inner conical surface is the bail wire (inside and outside be the bipyramid face) of lance shape again, and at the centre of bail wire saw one osculum, in the coarse-pitch thread root of inipple and groove, place and its O shape of coincideing circle, in the conical surface of nut, put into bail wire and put into suitable O shape circle at the rear portion, withstand bail wire, again nut is screwed on the joint.During use as long as the identical pipe in thickness and space is inserted from nut one end, because O shape circle connects pipe with the effect of bail wire firmly with coupling arrangement, just in case pipe slightly outwards moves, also outside and maintenance sealing because the inner conical surface of the conical surface of bail wire and nut is identical.Just in case tear open and drive or O shape circle is aging can turn on nut when changing.

Claims

1, a kind of pipe connection device, it is characterized in that by a cross section be stepped shape, the outside, stage casing is a hexagon, the hexagon outside up and down is a screw thread, the upper end has living space in the screw thread and an arm is arranged at the center, there is the inipple [3] of an annular recess at the hexagon place of lower end threaded base portion, the external internal thread of arm one end of inipple and its outside, top that coincide are the conical surface, the inboard cylinder of male cone (strobilus masculinus) has an annular groove, the annular groove bottom, it before the top smooth section of internal thread the tapered cup nut [1] of an inner conical surface, near the inner conical surface place one cross section being arranged is spearhead shape and the bail wire [2] and the bail wire rear end that coincide with inner conical surface, one section screw thread place of inipple band arm root, two interior different O shape circles [4] of four big or small thicknesses of annular groove are formed.

2, pipe coupling arrangement according to claim 1 is characterized in that this bail wire is an annulus that jagged slightly discontinuous cross section is a lance shape.

3, pipe coupling arrangement according to claim 1 is characterized in that with the major diameter of thread of arm one end than the major diameter of thread with arm one end is not thick slightly.