CN2431465Y

CN2431465Y - Adjustable flexible quick-pipe joint

Info

Publication number: CN2431465Y
Application number: CN 00232083
Authority: CN
Inventors: 王景宇
Original assignee: DONGRONG BUILDING MATERIAL (FOSHAN) Co Ltd
Current assignee: DONGRONG BUILDING MATERIAL (FOSHAN) Co Ltd
Priority date: 2000-03-27
Filing date: 2000-03-27
Publication date: 2001-05-23
Anticipated expiration: 2010-03-27

Abstract

The utility model relates to an adjustable flexible quick-pipe joint which is composed of a joint base, an inner nut arranged in the joint base, a C-shaped ring, an extruding ring and a sealing ring. The outside of a connected pipe which is near the extruding ring is provided with a concave ring groove, on which the C-shaped ring is arranged. The sealing ring, the extruding ring and the inner nut are orderly installed or screwed in the joint base, and fasten the sealing ring, and the integral C-shaped ring is embedded on the concave ring groove, so that the connection of the pipe can be completed. The utility model has the advantages of good leakproof performance and fast operation method. Retractility, flexibility and stretching resistance are arranged between the connected pipe and the joint.

Description

Flexible flexible quick coupling

The utility model relates to the pipe coupling technical field, particularly a kind of flexible flexible quick coupling.

Existing a kind of pipe joint, referring to shown in Figure 1, it comprises Female connector fittings 1, rubber seal 2, pressure-bearing body 3, one awl end of seal ring 2 is housed in the end face taper hole of pressure-bearing body 3, and an end taper hole socket of the other end of seal ring 2 and Female connector fittings 1, the other end of Female connector fittings 1 is connected with the outside thread of pressure-bearing body 3, and the end face of the pipe fitting of installing in the endoporus of seal ring 24 withstands on the step of pressure-bearing body 3 endoporus by the back-up ring of seal ring 2.There is following deficiency in the pipe joint of said structure: the end face of (1) pipe fitting 4 withstands on the step of pressure-bearing body 3 endoporus by the back-up ring of seal ring 2, this structure is for being embedded within the walls or underground pipeline generation thermal expansion or landform when changing, displacement because of pipe fitting, shown in the direction of arrow among Fig. 1 or vertical axis when scratching, can damage pipe-line system, cause leaking.(2) owing to the friction that only depends on seal ring 2 that is connected of pipe fitting 4 and joint, meet pipe fitting 4 and be stretched, when rising, be prone to the pipe fitting obscission as pressing in arrow opposite direction or the pipe-line system among Fig. 1.(3) two internal taper holes designs of pressure-bearing body 3 and Female connector fittings 1 formation are held the enough ideals of pipe fitting effect tightly for rubber seal 2, cause that easily sealability descends.(4) nut 1 is in the process that screws with pressure-bearing body 3, and the conical surface of rubber seal 2 can friction and fold take place with nut 1, makes to screw difficulty, influence construction quality, screws reality and does not screw because of takeing for easily, thereby cause leakage.

The purpose of this utility model is to provide a kind of flexible flexible quick coupling, and it can not only make the pipe fitting opposing tabs that bigger flexible flexible kinetic force and difficult drop-off are arranged, and it is reasonable to make Sealing that body is held tightly power, and leak resistance is good, easily construction.

The purpose of this utility model is achieved in that a kind of flexible flexible quick coupling, comprise joined two pipes together, connection block and be arranged at inner nut, C type circle, extrusion ring, seal ring in the connection block, sealing circle, extrusion ring are contained in the connection block successively, close extrusion ring outside is provided with concave ring groove being joined two pipes together, be equipped with C type circle on it, inner nut screws in packing extrusion ring and seal ring in the connection block, and by its inner conical surface C type circle is embedded on the concave ring groove.Described seal ring is made by limber material such as rubber or plastics or Expanded graphite; Extrusion ring, inner nut are made by the less metallic material of friction factor.

Advantage of the present utility model be to be joined two pipes together and joint between have scalability, the moving property of flexible, taking off property of tension and good leak resistance, mode of operation efficiently.

Fig. 1 is the structural representation of existing a kind of pipe joint.

Fig. 2 is the utility model structural representation, and wherein connection block one side represents that inner nut does not screw state, and opposite side represents that inner nut has screwed state.

Fig. 3 is the structural representation that expression the utlity model has the moving property of flexible.

By following embodiment the utility model is further elaborated.

Referring to shown in Figure 2, the flexible flexible quick coupling of embodiment of the utility model is by connection block 15 and place the inner nut 11 of these connection block 15 both sides respectively, and C type circle 12, extrusion ring 13, seal ring 14 are formed.Roll annular groove 17 in advance in 16 close extrusion ring 13 outsides of being joined two pipes together, be equipped with C type circle 12 on it; Seal ring 14, extrusion ring 13 are contained in the connection block 15 successively, inner nut 11 screws in packing extrusion ring 13 and seal ring 14 in the connection block 15, and the inner conical surface 18 by inner nut 11 embeds on the annular grooves 17 whole C type circle 12, can strengthen the anti-slip ability of pipe 16 so greatly.Because when inner nut 11 screws in connection blocks 15, plane by extrusion ring 13 and connection block 15 inner conical surfaces make it to be out of shape internal diameter and shrink seal ring 14 actings in conjunction, hold pipe 16 tightly, thereby have good sealing property.

Because port the place ahead of pipe 16 still has one section cavity, C type circle 12 has certain axial displacement space between the conical surface 18 and extrusion ring 13, thereby can overcome pipe 16 because of cold shrinkage and thermal expansion stretches, displacement causes pipe-line system to destroy this defective, in other words, the pipe joint of this structure has the scalability design.The seal ring 14 of present embodiment selects for use rubber to make, and is a kind of limber material, makes pipe 16 and joint realize flexibly connecting, thus pipe 16 can scratch along direction perpendicular to axis, referring to shown in Figure 3.When the deformation of spot, this flexible flexible quick coupling can absorb to cause and become the mechanical force that deflects folding, keeps the sealing of pipe-line system.

Because the friction factor of seal ring 14 is big, between inner nut 11 and seal ring 14, be provided with extrusion ring 13, not direct and seal ring 14 frictions when inner nut 11 and connection block 15 are spun, inner nut 11 is all selected friction factor materials with smaller manufacturings such as copper, steel for use with extrusion ring 13, thereby make inner nut 11 turn easily, connect quick construction, easy fast.

Pipe 16 need only be inserted in the seal ring 14 through inner nut 11, C type circle 12, extrusion ring 13 during construction, tighten inner nut 11 then and get final product.Structures such as that the connection block 15 in the utility model can be made into is straight-through, threeway, four-way are selected bypass structure for use in the present embodiment.

Claims

1, a kind of flexible flexible quick coupling, comprise joined two pipes together, connection block, it is characterized in that also comprising the inner nut, C type circle, extrusion ring, the seal ring that are arranged in the connection block, sealing circle, extrusion ring are contained in the connection block successively, close extrusion ring outside is provided with concave ring groove being joined two pipes together, be equipped with C type circle on it, inner nut screws in packing extrusion ring and seal ring in the connection block, and by its inner conical surface C type circle is embedded on the concave ring groove.

2, flexible flexible quick coupling according to claim 1 is characterized in that described seal ring made by rubber or plastics or flexible graphite material; Extrusion ring, inner nut are made by metallic material.