CN201090854Y

CN201090854Y - Tube connecting device

Info

Publication number: CN201090854Y
Application number: CNU2007200081875U
Authority: CN
Inventors: 陈荣辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-07
Filing date: 2007-09-07
Publication date: 2008-07-23
Anticipated expiration: 2017-09-07

Abstract

Disclosed is a pipe connecting device which comprises a pipe joint, a thread connecting piece and a pipe; the pipe joint is provided with a pipe cavity and at least two connecting ends communicated with the pipe cavity; a clamping surface is formed on the connecting ends of the pipe joint; the thread connecting piece is in matched connection with the connecting ends of the pipe joint through thread; the thread connecting piece is provided with a clamping surface corresponding to the clamping surface of the pipe joint; the connecting ends of the pipe are bent outwards to form a flanging which is clamped tightly between the clamping surfaces of the thread connecting piece and the pipe joint; the pipe cavity of the pipe joint is communicated with the pipe cavity of the pipe. Damageable thread machining for the connected pipe is not needed, so that the thickness of the pipe does not need to be increased for thread machining; thereby, the material is saved and the cost is reduced.

Description

Pipe joint

Technical field

The utility model relates to pipe connecting structure, specifically is meant a kind of pipe joint.

Background technique

In delivery line, can run into the situation that needs tubing to connect inevitably, tubing Placement commonly used at present is the outer circumferential face threading at the tubing connecting end, so that be connected with the screw-internal thread fit of pipe joint.This kind Placement need because screw thread has certain degree of depth, for guaranteeing can reach after tubing connects the requirement of intensity and sealability aspect, need tubing to have certain wall thickness, thereby cause the waste of material at tubing connecting end threading.

Threaded connector is welded in the end at tubing that also has, and carry out screw-thread fit by threaded connector and pipe joint again and be connected, though can avoid above-mentioned requirement to tube wall thickness, complicated but its processing mode becomes, cost is improved.

The model utility content

The utility model provides a kind of pipe joint, and its main purpose is to overcome the shortcoming of above-mentioned existing pipe joint.

The utility model adopts following technological scheme: pipe joint comprises: pipe joint, and this pipe joint has a tube chamber, has two connecting ends that are connected with tube chamber at least, and forms a gripping surface at the connecting end of pipe joint; Threaded connector, this threaded connector is connected by screw-thread fit with the connecting end of pipe joint, and this threaded connector is provided with the gripping surface relative with the gripping surface of described pipe joint; Tubing, the connecting end of this tubing outwards turns down, and forms flange, and this flange is clamped between the gripping surface of described threaded connector and pipe joint, and the tube chamber of pipe joint is connected with the tube chamber of tubing.

Aforementioned pipe joint, the connecting end of its pipe joint forms a direct expansion section, and the madial wall of this direct expansion section is provided with internal thread, forms described gripping surface between the madial wall of the madial wall of this direct expansion section and pipe joint other parts; Described threaded connector is a sleeve shape body, be socketed on the periphery of tubing connecting end, the periphery wall of this threaded connector is provided with the outside thread that matches with the internal thread of the direct expansion section of described pipe joint madial wall, and the end face of this threaded connector in pipe joint forms described gripping surface.

Further, the end face of described threaded connector outside pipe joint is provided with an annular boss, and the external diameter of this annular boss is greater than the external diameter of described enlarged-diameter portion.

Aforementioned pipe joint, its pipe joint connecting end periphery wall is provided with outside thread, and its end face forms described gripping surface; Described threaded connector is a sleeve shape body, its inner circle wall is provided with internal thread, cooperate fixingly with the outside thread of pipe joint connecting end by this internal thread, the outer end of this threaded connector forms the pressure ring that is covered in pipe joint connecting end end face, and the inner side surface of this pressure ring forms described gripping surface.

The flange outer end of aforementioned tubing connecting end is inwardly turnover again, forms double flare.

Be folded with gasket seal between the flange of aforementioned tubing connecting end and the gripping surface.

By above-mentioned description to the utility model structure as can be known, compare, the utlity model has following advantage: one with prior art, need not carry out damaging machining screw to being connected tubing, thereby need not increase tube wall thickness for machining screw, and saved material from face, reduced cost; Two, simple installation the time only need rotate threaded connector in assembling and get final product, and does not influence being connected of other connecting end of pipe joint and other tubing; Three, owing to do not carry out damaging processing to being connected tubing, thereby the tube surfaces of having avoided causing thus produces phenomenons such as oxidation, corrosion because of damage; Four, tubing and pipe joint be connected firmly difficult drop-off, good seal performance; Five, pipe joint can have the structure of various ways, and is first-class as straight-through, reducing coupling, 90 degree elbows, threeway, reducing tee, four-way, reducing cross, loose joint.

Description of drawings

Fig. 1 is the utility model embodiment one a sectional structure schematic representation;

Fig. 2 is the utility model embodiment one a decomposition sectional structure schematic representation;

Fig. 3 is the utility model embodiment two a sectional structure schematic representation;

Fig. 4 is the utility model embodiment two a decomposition sectional structure schematic representation;

Fig. 5 is the sectional structure schematic representation of the utility model embodiment three, four tubing.

Embodiment

Embodiment of the present utility model is described with reference to the accompanying drawings.

Specific embodiment one

Pipe joint sees figures.1.and.2, and its main structure comprises pipe joint 1 and connected tubing 2,3.This pipe joint 1 has a tube chamber, and has two connecting ends that are connected with

tube chamber

11,12, is connected with

tubing

2,3 respectively by this two connecting

end

11,12, thereby makes

tubing

2,3 realize connecting.

The following describes the linkage structure of connecting end 11 with the tubing 2 of pipe joint 1.

See figures.1.and.2, the connecting end 11 of pipe joint 1 forms a direct expansion section, and the madial wall of this direct expansion section is provided with internal thread, forms a gripping surface 10 between the madial wall of the madial wall of this direct expansion section and pipe joint 1 other parts.Other has a threaded connector 4, this threaded connector 4 is a sleeve shape body, be socketed on the periphery of tubing 2 connecting ends, the periphery wall of this threaded connector 4 is provided with the outside thread that matches with the internal thread of described pipe joint 1 connecting end 11 direct expansion section madial walls, and the end face of this threaded connector 4 in pipe joint 1 forms a gripping surface 40.The connecting end of tubing 2 outwards turns down, and forms flange 21, and this flange 21 is clamped between the

gripping surface

40,10 of described threaded connector 4 and pipe joint 1, and the tube chamber of pipe joint 1 is connected with the tube chamber of tubing 2.

Flange 21 outer ends of aforementioned tubes 2 connecting ends are inwardly turnover again, forms the double flare structure, with the intensity of further reinforcement connection.The end face of threaded connector 4 outside pipe joint 1 is provided with an annular boss 41, the external diameter of this annular boss 41 is greater than the external diameter of described pipe joint 1 connecting end 11 enlarged-diameter portions, is matched with in the pipe joint 1 connecting end 11 enlarged-diameter portions so that threaded connector 4 screwed.

Be folded with gasket seal 5 between the flange 21 of tubing 2 connecting ends and the gripping surface 10, to guarantee the sealing of connection part.

Tubing 3 is identical with the linkage structure and the said structure of pipe joint 1 another connecting end 12.

Specific embodiment two

Pipe joint, with reference to Fig. 3 and Fig. 4, its main structure comprises pipe joint 1 and connected tubing 2,3.This pipe joint 1 has a tube chamber, and has two connecting ends that are connected with

tube chamber

11,12, is connected with

tubing

2,3 respectively by this two connecting

end

11,12, thereby makes

tubing

2,3 realize connecting.

Pipe joint 1 connecting end 11 periphery walls are provided with outside thread, and its end face forms a gripping surface 10.Other has a threaded connector 4, this threaded connector 4 is a sleeve shape body, its inner circle wall is provided with internal thread, cooperate fixing with the outside thread of pipe joint 1 connecting end 11 by this internal thread, the outer end of this threaded connector 4 forms the pressure ring 41 that is covered in pipe joint 1 connecting end 11 end faces, and the inner side surface of this pressure ring 41 forms a gripping surface 40.The connecting end of tubing 2 outwards turns down, and forms flange 21, and this flange 21 is clamped between the

gripping surface

Flange 21 outer ends of aforementioned tubes 2 connecting ends are inwardly turnover again, forms the double flare structure, with the intensity of further reinforcement connection.Be folded with gasket seal 5 between the flange 21 of tubing 2 connecting ends and the gripping surface 10, to guarantee the sealing of connection part.

Specific embodiment three

Its structure and embodiment one are basic identical, and the main distinction is: with reference to Fig. 5, the flange 22 of its tubing 2 is a single layer structure.

Specific embodiment four

Its structure and embodiment two are basic identical, and the main distinction is: with reference to Fig. 5, the flange 22 of its tubing 2 is a single layer structure.

In above-mentioned four embodiments, pipe joint 1 all has only two

isometrical connecting ends

11,12, and the angle between the two is 90 degree, but those of ordinary skill in the art can draw at an easy rate, that pipe joint 1 can also have is straight-through, reducing coupling, threeway, reducing tee, four-way, reducing cross, the first-class structure of loose joint, if the angle between each connecting end also might not 90 degree, can determine according to concrete needs; In addition, can be orthogonal between the flange 21 of aforementioned tubes 2 and the tube wall, also can become other possible angle, certainly the angle of

gripping surface

40,10 also corresponding the variation.

Above-mentioned only is embodiment of the present utility model, but design concept of the present utility model is not limited thereto, and allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims

1. pipe joint, it is characterized in that: comprise pipe joint, threaded connector and tubing, this pipe joint has a tube chamber, has two connecting ends that are connected with tube chamber at least, and forms a gripping surface at the connecting end of pipe joint; This threaded connector is connected by screw-thread fit with the connecting end of pipe joint, and this threaded connector is provided with the gripping surface relative with the gripping surface of described pipe joint; The connecting end of this tubing outwards turns down, and forms flange, and this flange is clamped between the gripping surface of described threaded connector and pipe joint, and the tube chamber of pipe joint is connected with the tube chamber of tubing.

2. pipe joint as claimed in claim 1, it is characterized in that: the connecting end of described pipe joint forms a direct expansion section, the madial wall of this direct expansion section is provided with internal thread, forms described gripping surface between the madial wall of the madial wall of this direct expansion section and pipe joint other parts; Described threaded connector is the simple shape body of a cover, be socketed on the periphery of tubing connecting end, the periphery wall of this threaded connector is provided with the outside thread that matches with the internal thread of the direct expansion section of described pipe joint madial wall, and the end face of this threaded connector in pipe joint forms described gripping surface.

3. pipe joint as claimed in claim 2 is characterized in that: the end face of described threaded connector outside pipe joint is provided with an annular boss, and the external diameter of this annular boss is greater than the external diameter of described enlarged-diameter portion.

4. pipe joint as claimed in claim 1 is characterized in that: described pipe joint connecting end periphery wall is provided with outside thread, and its end face forms described gripping surface; Described threaded connector is a sleeve shape body, its inner circle wall is provided with internal thread, cooperate fixingly with the outside thread of pipe joint connecting end by this internal thread, the outer end of this threaded connector forms the pressure ring that is covered in pipe joint connecting end end face, and the inner side surface of this pressure ring forms described gripping surface.

5. as claim 1 or 2 or 4 described pipe joints, it is characterized in that: the flange outer end of described tubing connecting end is inwardly turnover again, forms double flare.

6. as claim 1 or 2 or 4 described pipe joints, it is characterized in that: be folded with gasket seal between the flange of described tubing connecting end and the gripping surface.