CN2307169Y

CN2307169Y - Collar joint

Info

Publication number: CN2307169Y
Application number: CN 97235289
Authority: CN
Inventors: 陈以浙; 赵永宾
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-08-19
Filing date: 1997-08-19
Publication date: 1999-02-10
Anticipated expiration: 2007-08-19

Abstract

The utility model relates to a cutting sleeve type joint of a tube. The utility model is composed of a joint body 1 with threads outside, tube joint nuts 2, and a cutting sleeve. The cutting sleeve type joint is characterized in that a rake angle of the outer wall of the cutting sleeve 3 equals to a slope rake angle on the cooperated part of the joint body 1 and the tube joint nuts 2. The slope part of the cutting sleeve 3 is longer. An inner end caliber equals to an internal diameter. Therefore, when the cutting sleeve is in contact with the joint body, the tube joint nuts, and the tube, the cutting sleeve type joint of a tube has a good deformation effect. The connection between tubes dose not need an end part to be executed with threads. The tube is directly inserted into the joint, tube joint nuts on both ends of the joint are tightened, and connection work between tubes is finished. The utility model has the advantages of simple structure, reasonable structure, good tightness, and convenient use, maintenance, assembly and disassembly. Simultaneously, an external screw joint can be made into an elbow, a three way, a four way, a two way, an end and end, and others to meet different needs.

Description

The FERRULETYPE joint

The utility model relates to a kind of pipe coupling, particularly the FERRULETYPE joint.

In background technique, among the China pipeline fittings standard GB 33.1-83-GB3785-83, the detailed data of existing FERRULETYPE joint series product, it comprises fittings body the FERRULETYPE joint, union nut, cutting ferrule three parts are formed, the deficiency of the FERRULETYPE joint in the standard be the draft angle in the cutting ferrule match with fittings body and union nut the place draft angle unequal, and the inwall of the gradient of the miner diameter end of cutting ferrule part does not have gradient, when causing cutting ferrule to be subjected to the external force extruding, distortion is difficult, deformation position is unreasonable, and distortion not exclusively, corresponding reduction with the seal degree of fittings body and union nut.

The purpose of this utility model provides a kind of rational in infrastructure, and the cutting ferrule deformation effect is good, the FERRULETYPE joint of good seal performance.

For achieving the above object, the utility model has adopted the draft angle that changes cutting ferrule end inside and outside wall, end is equated with the inwall draft angle that fittings body cooperates, the other end equates with the inwall draft angle that union nut cooperates, and the interior bore of cutting ferrule A end is equated with internal diameter, increase the gradient partial-length of A end simultaneously.

Equate that make union nut like this, fittings body is even to the extruding force of cutting ferrule owing to adopted the outer wall draft angle at cutting ferrule two ends to cooperate in the technique scheme with fittings body and union nut, and contact fully, and surface of contact is big, and distortion easily when being fastened in the external force extruding, distortion has evenly improved seal degree, simultaneously, installation, convenient disassembly, easy have reduced cost, are with externally threaded fittings body can make threeway, four-way, two is logical, elbow, a series of patterns such as reducing are to adapt to different needs.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Accompanying drawing 1: joint geometry is the integral installation distribution structure schematic representation of threeway;

Accompanying drawing 2: the deformable cutting ferrule structural representation of an end in the FERRULETYPE joint;

Accompanying drawing 3: the structural representation of the union nut of FERRULETYPE joint;

Accompanying drawing 4: the fittings body of FERRULETYPE joint is a threeway pattern structural representation;

Accompanying drawing 5: all deformable cutting ferrule structural representation in two ends in the FERRULETYPE joint.

Embodiment one: as accompanying drawing 1,2,3, shown in 4, fittings body is an example with the threeway pattern, each end of fittings body 1 all has outside thread, port section inwall all is an inclined-plane 7, pipe 4 directly inserts in the port of fittings body 1, cutting ferrule 3 is enclosed within the outside of pipe 4, a part is in pipe inserts the port of fittings body 1, the draft angle (α) on the inclined-plane 8 of cutting ferrule 3A end equates with the draft angle (β) on inclined-plane 7, and the length on inclined-plane 8 is longer, inclined-plane 8 contacts fully with inclined-plane 7 like this, surface of contact is big, union nut 2 is enclosed within the outside of cutting ferrule 3 and pipe 4, outside thread by fittings body 1 is tightened, union nut inclined-plane 6 equates with the draft angle on cutting ferrule inclined-plane 5, inclined-plane 6 in the union nut 2 contacts fully with inclined-plane 5 in the cutting ferrule 3 like this, the pressure that connects of union nut 2 pushes cutting ferrules 3 by inclined-plane 5, cutting ferrule 3 pushes with fittings body inclined-plane 7 under external force, because the outer wall draft angle of cutting ferrule 3A end equates with the inwall draft angle, and the interior bore of A end equates with the internal diameter of cutting ferrule 3, A end gradient part is longer, make the A end of cutting ferrule 3 stressed evenly, the distortion of inclined-plane 8 parts is easy, and deformation position is reasonable, and distortion thoroughly is out of shape back cutting ferrule 3 and is blocked pipe 4, and contact fully with pipe 4, sealing fully between cutting ferrule 3 and the pipe 4 like this, simultaneously, the A of cutting ferrule 3 end is because inclined-plane 8 and 7 good the contact, the inclined-plane 5 of B end contacts with the good of inclined-plane 6 in the union nut 2, makes joint have excellent sealing performance.

Embodiment two; Shown in accompanying drawing 1,5,3,4, other are identical with embodiment one, only change the structure of cutting ferrule 3, the structure of cutting ferrule 3 adopts the inwall draft angle at bigger diameter end equating with the outer wall draft angle, makes it identical with the structure of miner diameter end, like this, when extrusion-deformation, two ends all are out of shape, and block pipe 4 simultaneously, make sealability better.

Claims

1, a kind of FERRULETYPE joint, it comprises that the end has externally threaded fittings body (1), union nut (2), cutting ferrule (3) is formed, it is characterized in that: the outer wall sealing draft angle (α) of cutting ferrule (3) A end equates with the port draft angle (β) of fittings body (1), the inner wall sealing draft angle equates with the outer wall draft angle, and the interior bore of cutting ferrule (3) A end equates with internal diameter.

2, FERRULETYPE joint according to claim 1 is characterized in that: the A end band gradient part of cutting ferrule (3) is longer.

3, FERRULETYPE joint according to claim 1 and 2 is characterized in that: cutting ferrule (3) Si Bike section is inclined-plane (9).

4, according to claim 1 or 2 or 3 described FERRULETYPE joints, it is characterized in that: the outer wall draft angle of cutting ferrule (3) B end equates with the draft angle of interior inclined-plane (6) part of union nut (2).