Quick joint of corrugated pipe
Technical field
The utility model relates to the link of a kind of combustion gas with metal bellows, relates in particular to a kind of quick joint of corrugated pipe.
Background technique
The mode of traditional gas appliances such as connection LP gas cylinder, fuel tube or gas cooker is: tighten with Drop-proof with pipe clamp through the rubber pipe connection and at the two ends of rubber pipe.This Placement exists the some shortcomings part: the rubber pipe rotproofness is poor, it is aging to be prone to, working life is short, and gas leak phenomenon takes place easily.For solving the safe and reliable connectivity problem of gas pipeline; At present corrugated metal flexible steel in flat section tubing that adopt more; Its two ends are welded with the thread connecting joint of metal, and it is can be arbitrarily crooked and have and can not bend that it has certain flexibility, and it is convenient and reliable to be threaded; Can stop owing to the intoxication accident that causes of gas leakage, practical effect is fine.Because what its body and joint adopted is welding procedure, practical operation is very complicated, and its length is limited, in case definitely when dispatching from the factory just can't change, more can't carry out freely reducing according to Len req at the scene.Therefore it can only use in limited occasion, can not extensive use.
The model utility content
To the shortcoming of existing technology, the purpose of the utility model is to provide a kind of simple in structure, easy to use, good seal performance, bellows length can be according to the on-the-spot quick joint of corrugated pipe of freely reducing.
To achieve these goals; The technological scheme of the utility model is: a kind of quick joint of corrugated pipe; Comprise the bellows of joint body, insertion joint body, bellows inserts the attachment hole in the joint body, is provided with seal ring in the said attachment hole; Said attachment hole is the conical surface hole that an internal diameter ecto-entad diminishes gradually, and said seal ring external surface shape is for to match with said attachment hole inner surface configuration; Said joint body outer surface also is provided with one and makes the close-connected clamping sleeve of joint body, seal ring and bellows.Utilize this joint, bellows cuts off the back anywhere and all can connect.
Further, said seal ring internal surface is a corrugated surface, and shape matches with the bellows external surface shape, and the minimum end end face of said internal diameter of the seal ring is held neat the cooperation level with both hands with bellows one, and sealability is good, stops the gas leak phenomenon of fuel tube.
Said bellows is a corrugated stainless steel tubing.
Compared with prior art; The utlity model has following advantage: the utility model is through joint body, seal ring, bellows closely cooperating structurally; Adopt the method for spinning fastening to connect, do not need welding, made pipe fitting length can freely be reduced according to on-the-spot needs; On the other hand, through the clamping sleeve of screwing joint closely is connected with corrugated stainless steel tubing, accomplishes in case connect, both connect reliably.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of joint body;
Fig. 3 is the structural representation of seal ring;
Fig. 4 is the structural representation of clamping sleeve.
Embodiment
Below in conjunction with accompanying drawing the utility model is carried out detailed description.
Extremely shown in Figure 4 like Fig. 1; A kind of quick joint of corrugated pipe of the utility model; Comprise the corrugated stainless steel tubing 4 of joint body 1, insertion joint body 1, the attachment hole that corrugated stainless steel tubing 4 inserts in the joint bodies 1 is provided with seal ring 2 in the attachment hole; Attachment hole is the conical surface hole that an internal diameter ecto-entad diminishes gradually, and said seal ring 2 external surface shape are for to match with the attachment hole inner surface configuration; Joint body 1 outer surface also is provided with one and makes joint body 1, seal ring 2 and bellows 4 close-connected clamping sleeves 3.Seal ring 2 internal surfaces are a corrugated surface, and shape matches with the bellows external surface shape.The minimum end end face of seal ring 2 internal diameters is held neat the cooperation level with both hands with bellows 4 one.
The installation and application of the utility model is:
1, use special-purpose Pipe Cutting instrument (like casing knife) that corrugated stainless steel tubing 4 is cut off, that the end face after the cutting requires is neat, non-trimming, no burr;
2, pierce into corrugated stainless steel tubing 4 in the clamping sleeve 3.
3, be enclosed within seal ring 2 on the surface of corrugated stainless steel tubing 4, require the end face of the minimum end of seal ring 2 internal diameters concordant with the end face of corrugated stainless steel tubing;
4, be enclosed within joint body 1 on the surface of seal ring 2, then clamping sleeve 3 and joint body 1 screwed, the nut on the clamping sleeve 3 that screws up with a wrench is until putting in place.
Because the internal surface of seal ring is a corrugated surface, its bellows-shaped is consistent with the outer surface of corrugated stainless steel tubing 4, so sealability is good, stops the gas leak phenomenon of fuel tube; Also, match, can make seal ring produce bigger amount of deformation after screwing, thereby joint closely is connected with corrugated stainless steel tubing, play good seal action simultaneously with the joint body 1 attachment hole endoporus conical surface because the outer surface of seal ring is a conical surface.
Above embodiment only is used to explain the technological scheme of the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to preferred embodiment; The those of ordinary skill in affiliated field is to be understood that; Still can make amendment and perhaps the part technical characteristics is equal to replacement the embodiment of the utility model; And not breaking away from the spirit of the utility model technological scheme, it all should be encompassed in the middle of the technological scheme scope that the utility model asks for protection.