CN2391082Y

CN2391082Y - Heavy-caliber sanitary pipe joint

Info

Publication number: CN2391082Y
Application number: CN 99242912
Authority: CN
Inventors: 虞国平
Original assignee: LINGYU PIPE FITTING CO Ltd ZHUJI CITY
Current assignee: LINGYU PIPE FITTING CO Ltd ZHUJI CITY
Priority date: 1999-09-09
Filing date: 1999-09-09
Publication date: 2000-08-09
Anticipated expiration: 2009-09-09

Abstract

The utility model relates to a large-caliber sanitary pipe joint for being connected with pipelines. The large-caliber sanitary pipe joint for being connected with pipelines is mainly composed of a joint body, an outer nut, a clamping ring, and a sealing ring. The structure of the large-caliber sanitary pipe joint for being connected with pipelines is characterized in that the contact inner circle surface of the clamping ring and a pipe is provided with a zigzag-shaped tooth, and the zigzag-shaped tooth is inwards inclined to push the pipe to be inwards pressed to enhance pulling drop intensity. An inner lining is omitted. The lessening of inner diameter is avoided, water flow resistance is reduced, and the service life of the large-caliber sanitary pipe joint for being connected with pipelines is enhanced. The large-caliber sanitary pipe joint for being connected with pipelines has simple structure, and easy assembly and disassembly.

Description

Heavy caliber sanitary pipe joint

The utility model relates to a kind of heavy caliber sanitary pipe joint that connects cold water pipe, hot-water line pipeline.

Existing hot water or cold water (medium) pipe large-diameter pipe joint and pipe joint all are provided with liner in caliber, to guarantee sealability and to strengthen pull-off strength, the drawback of bringing therefrom is that pipeline is diminished at the latus rectum of joint, resistance to water-flow increases, and leaking can appear in especially bigbore pipeline, in addition, other part of pipe joint is many, the structure more complicated, anti-revisionist rate increases, and influences working life.

At the deficiency that existing large-diameter pipe joint exists, the utility model provides a kind of straight coupling that is applicable to, curved pass joint, and tee union, cross fitting, plug is connected with reducer fitting, the pipe joint of no liner.

Technical conceive scheme of the present utility model is as follows: it mainly includes adapter body, outer nut, snap ring and seal ring, tube outer wall is with being provided with snap ring and seal ring between the adapter body inwall, outer nut fastening main body is connected with pipe, and resonator end surface becomes the inclined-plane in the outer nut, its interior garden end face contacts with the outer garden of snap ring end face, be shaped on the elasticity lining on the adapter body and mould, its technical characterstic is that the interior garden face that snap ring contacts with pipe has saw shape tooth, and teeth directional tilts inwardly.

Good effect of the present utility model is: garden face indention in the snap ring, and teeth directional tilts in adapter body, top connecting leg, improve pull-off strength, save liner, overcome the joint internal diameter and diminish, the disadvantage that resistance to water-flow is big, reduce maintenance, the outer garden of garden and snap ring end joined reduces the planar friction resistance in the outer nut end face, make rapid operation, alleviate and face loosening that joint occurs mutually, the elasticity lining of adapter body is moulded, and can improve the sealability of pipe connecting end.

Below, with reference to the accompanying drawings, in conjunction with the embodiments, technology contents of the present utility model further is illustrated.

Fig. 1 is the utility model straight coupling topology view.

Fig. 2 is the plug topology view.

Shown in Figure 1, the two tubes 1 relative apical grafting of connection moulds 6 at the elasticity of adapter body 7 lining, is equipped with snap ring 3 at adapter body 7 inwalls and pipe 1 outer wall connecting part, pad 4, seal ring 5, its arrangement be seal ring 5 below, pad 4 is in the centre, snap ring 3 in the above.The interior garden face of snap ring 3 is provided with saw shape tooth, its teeth directional is to slope inwardly, become 30 °～65 ° degree angles, outer nut 2 end faces are the inclined-plane laterally, with the outer garden contact of snap ring 3 end faces, the outer nut 2 that turn is threaded with adapter body 7, pushing snap ring 3 moves inwards, helical teeth by snap ring 3 pushes away pipe 1 inward, makes two connection pipes, 1 end face mould 6 with adapter body 7 elasticity lining and presses.

Fig. 2 is another embodiment of the present utility model, and adapter body 7 and elasticity lining are moulded 6 one sealed port of butt end, are concave shape, and the pipe port inserts adapter body 7, makes its roof pressure mould 6 at lining by outer nut and seals end face.

Claims

1, a kind of heavy caliber sanitary pipe joint, it includes adapter body, outer nut, snap ring and seal ring is characterized in that the interior garden face that snap ring (3) contacts with pipe (1) is a saw shape tooth, teeth directional tilts inwardly.

2. by the described heavy caliber sanitary pipe of claim 1 joint, it is characterized in that the end face inner chamber of outer nut (2) is the inclined-plane, garden and the outer garden of snap ring (3) end joined in the end face.