CN2382931Y

CN2382931Y - Self locking pipeline connector

Info

Publication number: CN2382931Y
Application number: CN 99233802
Authority: CN
Inventors: 刘国方
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-26
Filing date: 1999-07-26
Publication date: 2000-06-14
Anticipated expiration: 2009-07-26

Abstract

The utility model discloses an automatic locking type connector which is used for fluid pipelines and is mainly composed of a ladder-shaped groove which is arranged on a joint and a tapered rubber sleeve which is arranged in the groove and is provided with a bottom edge. A connected pipeline is penetrated through the tapered rubber sleeve. Liquid pressure in the pipeline generates pressure to the tapered rubber sleeve which is pressed towards the outer wall of the pipeline of an inserting joint. Thereby, automatic locking seal is realized for preventing liquid in the pipeline from overflowing. The utility model has the advantages of convenient operation and simple maintenance and is suitable as a connecting device for various fluid pipelines.

Description

The self-locking pipe jointer

The utility model relates to a kind of fluid conduit connector apparatus, and especially a kind of pressure that utilizes the pipeline inner fluid carries out the pipe jointer of self-locking closure.

At present, it is to be threaded or to connect with flange that pipeline that people generally use connects, they have a common characteristic to need exactly pipeline is carried out machining, and promptly car silk or welded flange just can carry out effective pipeline then and connect, particularly when connecting with band wire connection head, be combined with certain limitation, twist excessive meeting and cause joint cracking, twist the too small fluid that may have and overflow, can not connect hard plastic tube and aluminium plastic composited tube etc., and maintenance is extremely inconvenient.The joint that other has hard plastic tube and aluminium plastic composited tube is to adopt not have the brass of thermal pressure to make, to seal clamping ring by threaded together is squeezed on the pipe, thereby complete layer difference formula O type circle sealing, make it to have switching performance reliably, but the cost height of such joint can not connect the hard tube that metal material is made.In a word, several pipe jointers exist that construction is complicated, working strength is big, cost is high, inconvenient maintenance, defectives such as connection that can not the various material pipelines of simultaneous adaptation more than.

The purpose of this utility model provides a kind of delicate structure, use is easy, easy to maintenance, can connect the self-locking pipe jointer that the metal material hard tube can connect rubber pipe, plastic tube and aluminium plastic composited tube again.

For achieving the above object, pipe jointer of the present utility model, adopt the self-locking closure structure, promptly in the inner chamber of connector, open one stepped groove, and settle a cone rubber cover, after connected pipe passes rubber sleeve, thereby the fluid that overflows in this pipeline tightly is pressed in rubber sleeve on the outer wall of connected tube insertion portion and plays the effect that self-locking closure prevents that the pipeline inner fluid from overflowing.

Compared with prior art, the utility model has following characteristics:

1, easy to use, only need the connected pipe insertion is got final product, working strength is low, construction is quick.

2, do not need connected pipe car silk or welded flange, therefore, can adapt to the connection of various material fluid lines, pipeline can rotate arbitrarily in 360 ° simultaneously.

3, maintenance is easy, as long as pipeline and connector are drawn back.

The utility model self-locking pipe jointer is suitable for the connection set as various fluid lines.

Fig. 1 is the structural drawing of the utility model self-locking pipe jointer straight coupling.

Fig. 2 is the action principle schematic representation of the utility model self-locking pipe jointer straight coupling.

Fig. 3 is the structural representation of the utility model self-locking pipe jointer band edge lid straight coupling.

Fig. 4 is the structural representation of the utility model self-locking pipe jointer band edge lid high pressure straight coupling.

Fig. 5 is that the adapter of the utility model self-locking pipe jointer is the structural representation of plastic tube, rubber pipe and aluminium plastic composited tube.

Describe concrete structure of the present utility model and working principle in detail below in conjunction with accompanying drawing.

Among the embodiment as shown in Figure 1, 2, illustrate with the straight coupling of making, on the inwall at two of joint 1, respectively open a stepped groove 2, the cone rubber cover 3 on base is housed in groove 2, the wide height that is a bit larger tham the cone rubber cover 3 that is placed in one of this groove 2, groove 2 shallow slots be a bit larger tham the thick of cone rubber cover 3 deeply, the base of cone rubber cover 3 places in the deep trouth of groove 2, the height of cone rubber cover 3 is not less than half of connected tube 4 external diameters.

Because the utility model self-locking pipe jointer and connected pipe 4 are the Spielpassung of sliding, so pipeline 4 passes cone rubber cover 3 at an easy rate and inserts in the joint 1, cone rubber cover 3 itself has a kind of natural pressure to pipeline 4 and on the outer wall attached to pipeline 4, there is certain clearance between cone rubber cover 3 and the groove 2, wherein can be full of the fluid in the pipeline 4, and the fluid in the pipeline 4 there is certain pressure intensity.Therefore, it also can be transmitted between cone rubber cover 3 and the groove 2 on the fluid in the gap, thereby cone rubber cover 3 is produced a pressure of pressing on pipeline 4 outer walls, and, the pressure of pipeline 4 inner fluids is big more, the pressure of 3 pairs of pipeline 4 outer walls of cone rubber cover is big more, thereby plays the effect that the self-locking closure pipeline prevents that fluid from overflowing.

In the embodiment shown in fig. 3, end cap 5 and joint 1 are only opened a flat grooves 2 for spiral is connected at the joint two ends, when end cap 5 is tightened the base of cone rubber cover 3 is pushed down, simultaneously also formed a stepped groove, its working principle is identical with the embodiment shown in Fig. 1,2.

Among the embodiment as shown in Figure 4, when pipeline 4 inner fluid pressure are big, make taper or triangle with compacted 6 in the joint 1, when end cap 5 is tightened more difficult moving pushed down on the base of cone rubber cover 3, can bear big fluid pressure, its working principle and Fig. 1,2 illustrated embodiments are identical.

Among the embodiment as shown in Figure 5, when pipeline 4 is plastic tube, rubber pipe or aluminium plastic composited tube, stretch into connector part at these a few type of conduits inner chambers and settle a metal short tube 7, and establish a taper pipe thread screwed cap 8 at the afterbody of end cap 5 and come fastening connected pipe 4, its working principle and Fig. 1,2 illustrated embodiments are identical.

The utility model self-locking pipe jointer also can make the pipe jointer of all kinds of modes such as threeway, elbow bend, reducing tee except that being designed to straight-through plain adapter.

Claims

1, a kind of self-locking pipe jointer comprises joint (1), it is characterized in that: have a stepped groove (2) at joint (1) inwall, the cone rubber cover (3) on a band base is housed in the groove (2).

2, a kind of self-locking pipe jointer according to claim 1, it is characterized in that: it can adopt end cap (5) to be connected by screw-thread fit with joint (1), a flat grooves (2) is opened in the termination of joint (1), tightens end cap (5) base of cone rubber cover (3) is pushed down.

3, self-locking pipe jointer according to claim 1 and 2 is characterized in that: the height of cone rubber cover (3) is not less than half of external diameter of connected pipe (4).

4, self-locking pipe jointer according to claim 2 is characterized in that: compacted (6) in the joint (1) can be plane, conical surface or gore.

5, self-locking pipe jointer according to claim 2 is characterized in that: the built-in metal short tube (7) of soft connected pipe (4) termination internal diameter, the afterbody of end cap (5) is established a taper pipe thread screwed cap (8).