CN2260224Y

CN2260224Y - Easily disassembled and self-locking pipe joint

Info

Publication number: CN2260224Y
Application number: CN 96243730
Authority: CN
Inventors: 吴文伦
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-11
Filing date: 1996-10-11
Publication date: 1997-08-20
Anticipated expiration: 2006-10-11

Abstract

The utility model provides self-locking pipe joint which can be easily assembled and disassembled and comprises a joint body, a nut and a sealing ring. A main body of the joint body is provided with a three-way joint, a four-way joint, an elbow joint, etc., which have same diameter or different diameter. The utility model is characterized in that a joint body opening is provided with elongated notches which are uniformly distributed; a pipe can be arranged without direct insertion of spanning screw-threads into the pipe joint; the pipe can be automatically locked by screwing up a joint body opening of the nut. The utility model has the advantages of simple structure, easy fabrication and convenient operation, and is suitable for mounting or maintenance of new or old liquid pipes and gas pipes.

Description

Convenient to load and transport self-locking pipe joint

The utility model relates to a kind of pipe coupling, and a kind of specifically liquid, gas pipeline of being applicable to loads and unloads the self-locking joint fast.

At present, the pipe coupling of use has directly, elbow, threeway and four-way etc., all is to be processed with internal thread.Must pull the system outside thread at straight tube two during installation, will twine linen thread on the screw thread or japanning is screwed in the joint screw thread again in order to be sealed in.Though people use this kind method for a long time, also have many inconveniences: 1. straight tube must be pulled the system screw thread; 2. erection sequence will be considered in the scene; Especially to change pipeline or when maintenance constructional difficulties big, for addressing these problems, through improved pipe joint, straight tube need not pulled the system screw thread, direct insertion tube joint, a kind of method is to be provided with O-ring seal in the termination of pipe joint, and afterbody has the nut of the conical surface to be screwed on the pipe joint, conical surface jam-packed seal ring, play sealing and the effect of chucking straight tube, another kind method is two pipe butt joints, overcoat inclined-plane cushion rubber, gland nut and connecting body inner conical surface compress cushion rubber chucking straight tube.Through improved pipe joint, all be by cushion rubber chucking pipe fitting, use the aging easily generation of cushion rubber loosening for a long time, pipe fitting withdraws from easily or the mouth of pipe leaks.

The purpose of this utility model provides a kind of energy quick mounting and can lock the convenient to load and transport self-locking pipe joint of pipe fitting.

The purpose of this utility model is to realize like this; Termination at pipe joint body is provided with outer cone thread, and pipe joint body port direct-axis line has three long rabbets that are evenly distributed.The pipe joint endoporus is identical with tube outer diameter, but in the pipe insertion tube joint, the nut of inside tapered thread cooperates with the pipe joint body outer cone thread, and fastening nut pipe joint mouth is just inwardly received the auto lock pipe.

The utlity model has following advantage: 1. simple in structure, make easily; 2. the pipe that cuts during pipe laying need not pulled the system screw thread, and directly the insertion tube joint is installed, but pipe joint mouth self-locking chucking pipe; 3. the installation, maintenance work efficiency that saves time improves; 4. the maintenance that also is fit to original pipeline is used.

Fig. 1 is the structure partial sectional view of the utility model convenient to load and transport self-locking pipe joint;

Fig. 2 is the first example structure sectional view of the utility model convenient to load and transport self-locking pipe joint;

Fig. 3 is the second example structure partial sectional view of the utility model convenient to load and transport self-locking pipe joint.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 shows the structure of the utility model convenient to load and transport self-locking pipe joint.Fittings body (1) termination outer wall has tapered thread, fittings body (1) port direct-axis line evenly distributes and has three rectangular notches (2), nut (3) is complementary for the outer cone thread of inside tapered thread and fittings body (1), and nut (3) is when being screwed into, and fittings body (1) port can close up to the axle center.

Fig. 2 is the utility model straight joint straight tube example of packing into.Fittings body (1) endoporus is a through hole, when two straight tubes will dock, fittings body (1) and nut (3) are enclosed within on the pipe (4) on one side, elastic seal ring (5) is put into fittings body and is linked to each other with pipe (4), another side pipe (4) inserts fittings body (1) Kong Zhongyu seal ring (5) connection, two straight tube (4) compress seal ring (5) to middle push-tight, tighten two end nuts (3), fittings body (1) port is subjected to nut (3) the pressure packing pipe (4) that inwardly closes up, form locking, pipe (4) can not withdraw from.When wanting demolition, unclamp nut (3), the port returning position of fittings body (1), pipe (4) just can be extracted out.

Fig. 3 is the utility model tee union attaching pipe example.Fittings body (6) port organization is identical with fittings body (1).Seal ring (5) is packed in the fittings body (6) mouthful, and end face links to each other with the boss ring (7) of fittings body (6), and pipe (4) inserts fittings body (6) and joins with seal ring (5), boss ring (7) during push-tight pipe (4) but baffle seal circle (5) inwardly go here and there and move.Fastening nut (3), fittings body (6) the port packing pipe (4) that inwardly closes up.

According to Fig. 3 example, the utility model is applicable to the application of four-way, elbow, reducer fitting body.

Elastic seal ring (5) adopts rubber to make, also can use than the low metallic material manufacturing of pipe (4) hardness, during installation, use the auxiliary anchor clamps that tighten up, make pipe (4) and metal o-ring (5) compress sealing, behind fastening nut (3) fittings body (1) or fittings body (6) the port locking pipe (4), anchor clamps are removed and are got final product.

Claims

1. convenient to load and transport self-locking pipe joint, form by fittings body, nut and seal ring, it is characterized in that: fittings body (1) termination outer wall has tapered thread, fittings body (1, a 6) mouthful direct-axis line has three long rabbets (2), and pipe (4) is locked in the inside packing of precession fittings body (1,6) port that matches of nut (3) inside tapered thread and fittings body (1,6) outer cone thread.

2. according to the described convenient to load and transport self-locking of claim 1 pipe joint, it is characterized in that: directly fittings body (1) is perfectly straight hole, and pipe (4) can insert in the straight hole, between two straight tube (4) docking port seal ring (5) is arranged.

3. according to the described convenient to load and transport self-locking of claim 1 pipe joint, it is characterized in that: the interior hole path of fittings body (6) has boss ring (7), and baffle seal circle (5) and pipe (4) inwardly string are moving.

4. according to claim 2 or 3 described convenient to load and transport self-locking pipe joints, it is characterized in that: seal ring (5) can be made or the metallic material that is lower than pipe (4) hardness is made by rubber.