CN201297460Y

CN201297460Y - Pipe joint

Info

Publication number: CN201297460Y
Application number: CNU2009200055742U
Authority: CN
Inventors: 匡立强
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-04
Filing date: 2008-01-04
Publication date: 2009-08-26
Anticipated expiration: 2018-01-04

Abstract

The utility model provides a pipe joint. a pipe body is disposed with 2-4 connectors; external threads are formed on the connectors; an inner cavity for containing orifice is disposed in the connector bore; and the end face of the connector is flat. A technical scheme of pipeline assembly matching the above pipe joint is: a pipeline assembly comprises a steel pipe and two connecting nuts. The two connecting nuts are sleeved on the steel pipe; a boss is extruded out on the outside of each end of the steel pipe with the distance of at least 3 millimeters to the orifice end; the steel pipe orifice is a horn mouth; the horn mouth base has a copper washer or rubber washer stuck on the end face of the boss; and the connecting nuts are positioned by the bosses. Applying the pipeline assembly and the pipe joint in oil line or gas line realizes plane connection, can seal reliably without sealant and PTFE tape, and can avoid the leakage of oil line or gas line as possible.

Description

A kind of pipe joint

The application is to be dividing an application of January 4, application number in 2008 are 200820065232.5, invention and created name is a kind of pipeline assembly and pipe joint utility application the applying date.

Technical field

The utility model relates to and the supporting pipe joint of pipeline assembly.

Background technique

Present stage, the Placement of air steel pipe assembly and pipe joint is that horn mouth with the corresponding air steel pipe of the inside and outside conical surface assembly port of pipe joint forms line with male cone (strobilus masculinus) and contact, and in addition sealer is connected with raw meal belt is auxiliary, prevents leakage.It extensively applies to the gas circuit of automobile and being connected of oil circuit.Owing to be that rigid line connects, the angle of the junction surface of the steel pipe mouth of pipe and joint and degree of finish all have very high requirement, simultaneously owing to misoperation when assembling, make pipeline and pipe joint not in one plane, even be aided with sealer and raw meal belt, also can't avoid in use leakage of oil or gas leak phenomenon.

Summary of the invention

For fear of the leakage of oil circuit or gas circuit, improve the sealing reliability that pipeline connects, the utility model proposes a kind of pipe joint.

Inventive concept of the present utility model: existing pipeline assembly is connected the face that changes into the line contact of pipe joint connects, improve the reliability of sealing.

For this reason, the technical solution of the utility model is: a kind of pipe joint, body are provided with 2～4 connecting heads, and connecting head is provided with outside thread, it is characterized in that: the connecting head endoporus is provided with the inner chamber that holds the mouth of pipe, and the end face of connecting head is a planar end surface.

With the technological scheme of the supporting a kind of pipeline assembly of aforementioned tube joint be: comprise steel pipe, two attaching nuts, two attaching nuts are enclosed within on the steel pipe, it is characterized in that: on the position of at least 3 millimeters of mouth of pipe ends, be extruded with boss on the two ends cylindrical of steel pipe, the steel pipe mouth of pipe is a horn mouth, and bell-mouthed root is with copper washer or rubber washer is attached on the end face of boss; The attaching nut locatees by boss.

Beneficial effect: when this pipeline assembly and pipe joint apply to oil circuit or gas circuit, the steel pipe mouth of pipe is in the inner chamber of connecting head of horn mouth insertion tube joint, copper washer is attached on the end face of connecting head, attaching nut on the turn steel pipe cooperates with outside thread on the connecting head, copper washer is deformed, the both ends of the surface of copper washer are adjacent to the end face of boss, connecting head respectively, and formation face connects, and reach the purpose of sealing.This pipeline assembly and pipe joint have been realized the face connection, no longer need sealer and raw meal belt, just can seal reliably, can avoid the leakage of oil circuit or gas circuit to greatest extent; Owing to be that face connects,, also can reach the purpose of sealing even pipeline and pipe joint misplace on a small quantity; Simultaneously, compared with the existing, avoid processing the processing of the inside and outside conical surface, reduced cost of production.

Description of drawings

Fig. 1 is a kind of structural representation of pipeline assembly.

Fig. 2 is a kind of structural representation of pipe joint.

Embodiment

A kind of pipeline assembly as shown in Figure 1, comprise steel pipe 1, two attaching nuts 4, two attaching nuts 4 are enclosed within on the steel pipe, on the position of 3 millimeters of mouth of pipe ends, be extruded with boss 2 on the two ends cylindrical of steel pipe at least, the steel pipe mouth of pipe is a horn mouth, and bell-mouthed root is with copper washer 3 and is attached on the end face of boss; Attaching nut 4 is by boss 2 location.

Described copper washer 3 can substitute with rubber washer.

Be a kind of bipass joint as shown in Figure 2, body 6 is provided with 2 connecting heads, and connecting head is provided with outside thread 7, and the connecting head endoporus is provided with the inner chamber 8 that holds the mouth of pipe, and the end face of connecting head is a planar end surface 9.

Fig. 2 is the structure of bipass joint.For three-way union (3 connecting heads) and union cross (4 connecting heads), the structure at its connecting head position and shown in Figure 2 identical is not being described at this.

Claims

1, a kind of pipe joint, body are provided with 2～4 connecting heads, and connecting head is provided with outside thread, it is characterized in that: the connecting head endoporus is provided with the inner chamber that holds the mouth of pipe, and the end face of connecting head is a planar end surface.