CN2375847Y

CN2375847Y - Pipe connecting piece

Info

Publication number: CN2375847Y
Application number: CN 99220836
Authority: CN
Inventors: 李燕军
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-11
Filing date: 1999-05-11
Publication date: 2000-04-26
Anticipated expiration: 2009-05-11

Abstract

The utility model discloses a pipe connection element. A necking nut with an end surface, a conical gasket and a pipe joint are orderly sheathed and tightly fixed on the pipe wall of the pipe outer diameter of a connection section. The screw threads of the nut is matched and screwed with the pipe joint, the conical gasket between the nut and the pipe joint is tightly fixed through the cooperation of a conical arc end surface and a conical arc inlay orifice, and the torus of the internal diameter of the gasket is tightly fastened and locked on the outer diameter of the pipe. The connection element does not use threading and cutting tools, and the construction operation of the pipes can be simply and rapidly carried out only by a manual wrench. The utility model has the advantages of firm connection and leakage and discharge prevention.

Description

Tube connection piece

The utility model discloses a kind of tube connection piece, it is applied to the connection between all kinds of tubing that do not possess screw thread, and it belongs to transfer line accessory technical field.

Commercially available general Coating Steel Pipe all needs to be equipped with special tool in pipeline construction, cut, tapping, coated lacquer mud filler, is fastenedly connected into pipeline.This work progress is numerous and diverse, and is time-consuming, and labor intensity is big.Commercially available plastic-aluminum tubing and engineering plastics tubing, it is taken over construction and also bothers.These plastic tube major parts take mouth of pipe inserting mode hot melt to connect, often owing to bonding strength causes seepage inadequately, even fracture.This mouth of pipe inserting mode obviously exists dwindles pipe diameter, causes the bottleneck eddy current, influences flow velocity, and then causes pipeline obstruction.Tubing interconnection technique of the prior art presses for improvement.

The purpose of this utility model is the deficiency that will overcome the aforementioned tubes Placement, and a kind of novel tube connection piece is provided.This link will be with simple structure, remove the trouble of tapping processing from, uses the simple hand instrument, but just quick connecting pipe material, and have the anti-effect of letting out of leak-stopping.This link will be widely used in the connection of all kinds of tubing.

Task of the present utility model is finished by following technological scheme, developed a kind of tube connection piece, two ends have externally threaded pipe joint and the end face reducing nut that is engaged on a certain end outside thread of this pipe joint, on the connection tube outer diameter tube wall of suitable length, be set with end face reducing nut successively, cone washer and pipe joint, between this nut of screw-thread fit and this joint, press and be embedded with cone washer, promptly the step breech face drive fit of this liner is entrapped in the end face reducing of this nut, the awl arc end face intercalation of this liner is a tight fit in the taper embedding mouth of this internal diameter of pipe joint end, and the internal diameter toroidal surface that forces this liner is held on this tube outer diameter tube wall, thereby constitutes the link on this tube outer diameter.

This tube connection piece, described cone washer, the axial length of its internal diameter toroidal surface at least will be more than 3mm.

This tube connection piece, described pipe joint, the left and right each other rotation direction screw thread of its two ends outside thread, this pipe joint middle part are that six rib bolts are leant on, or are that four rib bolts are leant on.

Tube connection piece of the present utility model, its good effect is, owing between the end face reducing nut of screw-thread fit and pipe joint, press and be embedded with cone washer, and snap in the end face reducing of this nut by the step breech face drive fit of this liner, screw the awl arc end face intercalation that this nut can advance this liner and be a tight fit in the awl arc embedding mouth of internal diameter of pipe joint end, so just force the internal diameter toroidal surface of this liner to be held in and connect on the section tube outer diameter tube wall.Like this because the closely cooperating of above-mentioned three parts forms the structure that locking fastens to tube outer diameter naturally, reach and do not get loose, leak-stopping is prevented the effect of letting out.Because link acts on the tube outer diameter, thereby can not form the resistance of contracting, use this link can not help line transportation because of connection causes flow loss of pressure head to bore.This link is adapted to the connection of various tubing, without tapping, only uses general Wrench, can connect tubing quickly and easily.

Embodiment's accompanying drawings of the present utility model is as follows:

Fig. 1 is the cross-sectional view of tube connection piece.

Fig. 2 is the assembling cross-sectional view of tube connection piece.

Referring to Fig. 1,2 make one the cover brassiness tube connection piece, it comprises: two ends have the pipe joint 3 of left and right rotation direction outside thread 1,2 and are engaged in the right or left-handed end face reducing nut 4 on outside thread 2 or 1 of these pipe joint 3 a certain ends.On the connection section tubing 5 external diameter tube walls of suitable length, be set with end face reducing nut 4 successively, cone washer 6 and pipe joint 3, promptly step breech face 7 drive fits of this liner 6 are entrapped in the end face reducing 8 of this nut 4.Awl arc end face 9 intercalations of this liner 6 are a tight fit in the awl arc embedding mouth 10 of these pipe joint 3 internal diameter ends, and force the internal diameter toroidal surface 11 of this liner 6 to be held on these tubing 5 external diameter tube walls, thereby constitute the link on these tubing 5 external diameters.Designed cone washer 6, the axial length of its internal diameter toroidal surface 11 are that 9mm is advisable.The pipe joint 3 of design, middle part is six rib hitching posts 12 between the left and right rotation direction outside thread 1,2 in its two ends, tightens pipe joint 3 and nut 4 in order to Wrench.This link is assemblied in the internal thread of bend pipe tools 13, and concrete implementation step is as follows:

(1) according to tubing to be connect 5 external diameter specifications, selects suitable pipe joint 3 for use, cone washer 6 and end face reducing nut 4;

(2) earlier this nut 4 and this liner 6 are inserted in suitable length place on these tubing 5 external diameters;

(3) pipe joint 3 being enclosed within this tubing 5 connects on the external diameter tube wall of section again;

(4) again the end face reducing 8 of this nut 4 is buckled on the step breech face 7 of this liner 6;

(5) internal thread with this nut 4 is screwed on the dextrorotation outside thread 2 of this pipe joint 3;

(6) screw this nut 4 with general manual spanner, force this liner 6 axial advance, and the awl arc end face intercalation that makes this liner 6 is in the awl arc embedding mouth 10 of these pipe joint 3 internal diameter ends, two awl cambered surface coupling drive fits, the internal diameter toroidal surface that must form this liner 6 links closely on the external diameter tube wall that is locked together in this tubing 5, is connected firmly thereby reach, and seals close tight, do not get loose, only ooze anti-effect of letting out.

This link is applicable to the tubing of various materials, pipe fitting (as: elbow, threeway; reducer fittings etc.), valve etc. are implemented to connect, and especially are applied in the connection of plastic tube; effect is excellent especially, utilizes this link can also protect the connection section external diameter of tubing injury-free simultaneously.

Claims

1, a kind of tube connection piece, it comprises: two ends have externally threaded pipe joint and the end face reducing nut that is engaged on a certain end outside thread of this pipe joint, it is characterized in that: on the connection section tube outer diameter tube wall of suitable length, be set with end face reducing nut successively, cone washer and pipe joint, between this nut of screw-thread fit and this pipe joint, press and be embedded with cone washer, promptly the step breech face drive fit of this liner is entrapped in the end face reducing of this nut, the awl arc end face intercalation of this liner is a tight fit in the awl arc embedding mouth of this internal diameter of pipe joint end, and the internal diameter toroidal surface that forces this liner is held on this tube outer diameter tube wall, thereby constitutes the link on this tube outer diameter.

2, according to right 1 described tube connection piece, it is characterized in that: described cone washer, the axial length of its internal diameter toroidal surface at least will be more than 3mm.

3, according to right 1 described tube connection piece, it is characterized in that: described pipe joint, the left and right each other rotation direction screw thread of its two ends outside thread, this pipe joint middle part are that six rib bolts are leant on, or are that four rib bolts are leant on.