CN2130996Y

CN2130996Y - Fast self-locking pipe joint

Info

Publication number: CN2130996Y
Application number: CN 92224759
Authority: CN
Inventors: 赵军; 周韶华
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-10
Filing date: 1992-06-10
Publication date: 1993-04-28
Anticipated expiration: 2002-06-10

Abstract

The utility model provides a pipe joint capable of carrying out quick installation without treating a pipe head. The utility model is characterized in that two inner cones are processed between a joint body and a lock nut, and a unique lock buckle is arranged between the two inner cones. A pipe can be locked or loosened by rotating the lock nut. Since the pipe head does not need to be treated, the utility model has the advantage of convenient use; owing to the unique lock buckle, the utility model also has the advantage of reliable operation. The utility model is suitable for a plastic pipe as well as a steel pipe.

Description

Fast self-locking pipe joint

The utility model relates to a kind of tube head that need not to handle, and just can carry out the fast self-locking pipe joint that pipe is installed fast.

Existing quick coupling, the one, need handle the tube head of pipe, as mantle fiber, weldering ring washer etc.; The 2nd, need not handle tube head, but not withstand voltage or complex structure.

The purpose of this utility model is finished as follows:

This joint mainly adopts fittings body, locknut, snap close to form.The fittings body head, outside adorn locknut, the Built-in lock button is screwed into locknut, promotes snap close, utilizes the conical surface to change the size of snap close endoporus, utilizes the notched teeth of snap close endoporus annular to tighten pipe, to reach the purpose of quick locking and sealing.It seals the difference according to form, and is divided into I type, II type, III type.

Its fast interface of fittings body has outside thread and the female cone with locknut and snap fit, interior in porose and step.

Locknut is outward six sides, its interior one be tubulature the hole and with the inner cone of snap fit, one is the internal thread that is connected with fittings body.

Fore shaft has two female cones of putting dorsad outward, in the ring-type notched teeth that cooperates with pipe is arranged, front end also has very short book wall mouth.Two outer cones cooperate with fittings body before and after the snap close be before, cooperate with locknut be after, its cone angle preceding less than after; The fittings body female cone that outer cone is mated before the snap close, its cone angle is outer less than interior.

Accompanying drawing 1 is the longitudinal sectional drawing of a kind of concrete structure of the utility model I type

Accompanying drawing 2 is longitudinal sectional drawings of a kind of concrete structure of the utility model II type

Accompanying drawing 3 is longitudinal sectional drawings of a kind of concrete structure of the utility model III type

Below in conjunction with description of drawings details of the present utility model:

This joint I type mainly is made up of fittings body ［ 1 ］, locknut ［ 2 ］, snap close ［ 3a ］.Snap close does not have vertical opening, and the ring-type notched teeth should be tight with cooperating of tube wall, utilizes the conical surface, is screwed into locknut, the snap close bulk deformation, and the ring-type notched teeth embeds tube wall, promptly realizes being called sealing tube wall and sealing firmly in locking.It is simple and reliable for structure, but wants the caliber standard.

This joint II type is mainly by fittings body ［ 1 ］, locknut ［ 2 ］, snap close ［ 3b ］, and seal ring ［ 4b ］ is formed, and one of snap close has the vertical opening of five equilibrium, and seal ring is before being connected in snap close.Be screwed into locknut, the snap close seal ring of ining succession advances, and notched teeth embeds tube wall locking, and seal ring is realized sealing simultaneously, is called the tube wall soft seal.Its structure has complexity slightly, but requires not tight to caliber.

This joint III type mainly is made up of fittings body ［ 1 ］, locknut ［ 2 ］, snap close ［ 3c ］, seal ring ［ 4c ］, one of snap close has the vertical opening of five equilibrium, seal ring is on the step that is contained in the fittings body, with the pipe end malleation on seal ring, be screwed into locknut, promote snap close, notched teeth embeds tube wall locking, seal ring sealing pipe end is called the pipe end soft seal.Its structure is also simpler, pipe end straight and even, but easily reaches.

Material selection: fittings body, locknut, snap close can be with carbon steel or stainless steels.Seal ring rubber.

For above three types, identical to the locking of pipe, seal slightly variant, the rare difference of usage range, but, pass through as high-pressure liquid, because the existence of the conical surface also produces self-locking action.So all can well lock and seal.

Claims

1, a kind of fast self-locking pipe joint of mainly forming by fittings body, locknut, snap close, at the fittings body head, outer dress locknut, the Built-in lock button, be screwed into locknut, advance snap close, utilize the conical surface to change the size of snap close endoporus, utilize the ring-type notched teeth of snap close to tighten pipe, to reach the purpose of quick locking and sealing, its sealing is divided into I type, II type, III type, of the present utility model being characterised in that according to the difference of form: outer two outer cones for putting dorsad of snap close, interior is the ring-type notched teeth that cooperates with pipe, and front end also has very short thin-walled mouth; Before and after the snap close two outer cones cooperate with fittings body be before, cooperate with locknut be after, its cone angle preceding less than after; Outer cone and the fittings body female cone that cooperates before the snap close, its cone angle is outer less than interior.

2, according to the described fast self-locking pipe joint of claim 1, it is characterized in that: this joint I type mainly is made up of fittings body ［ 1 ］, locknut ［ 2 ］, snap close ［ 3a ］, snap close does not have vertical opening, and the ring-type notched teeth is the tighter hard seal structure of tube wall with cooperating of tube wall; This joint II type mainly is made up of fittings body ［ 1 ］, locknut ［ 2 ］, snap close ［ 3b ］ seal ring ［ 4b ］, and one of snap close has the five equilibrium longitudinal opening, and seal ring is to be connected in the preceding tube wall soft sealing structure of snap close; This joint III type mainly is made up of fittings body ［ 1 ］, locknut ［ 2 ］, snap close ［ 3c ］ seal ring ［ 4c ］, and one of snap close has the five equilibrium longitudinal opening, and seal ring is the pipe end soft sealing structure on the step that is contained in the fittings body.