CN85202962U

CN85202962U - Pipes joint

Info

Publication number: CN85202962U
Application number: CN 85202962
Authority: CN
Inventors: 张新强; 王秋培
Original assignee: ZHANG XINQLANG WANG QIUPEI
Current assignee: ZHANG XINQLANG WANG QIUPEI
Priority date: 1985-07-16
Filing date: 1985-07-16
Publication date: 1986-05-07

Abstract

The utility model relates to a pipes joint, which is provided with a casing pipe. The inner of the pipe is provided with a screw thread and the screw plug of a through hole which is provided with a sealing ring and a cushion ring and matched with the casing pipe. When making the construction, the connected pipes are inserted in the device, and the screw plug of the through hole is screwed up. Thus, the reliable connection of pipes can be realized. The pipes joint changes the trouble that the pipes needs to be machined a section of thread when the general pipes joint is used for pipes connection, and some sealing materials are added. The pipes joint has improvement of the construction efficiency, labour saving and material saving. The utility model can substitute not only various pipe joints but also the common movable joint.

Description

Pipes joint

The utility model belongs to pipe connection device.

When general pipe joint is used for the pipe connection, need also need use materials such as flax silk, lacquer, glue or unsintered tape to seal to connected pipe hinge the preceding paragraph screw thread with matching.The construction trouble, and take a lot of work, take material.

The utility model provides a kind of the need or not make the device that sealing just can connect pipe easily with flax silk, lacquer, glue or unsintered tape and so on material to being connected pipe hinge screw thread.

Pipe connection device provided by the utility model has a sleeve pipe, and screw thread is arranged in the pipe, the open-work plug screw that can put into seal ring, packing ring in the sleeve pipe and match with sleeve pipe.

The female thread portion of sleeve pipe can have tapering, and there is convex shoulder at the root place of screw thread, is convenient to the seal ring axially locating; The open-work plug screw is made of plug screw helical thread portion and plug screw head coenosarc, the internal diameter of formed aperture of convex shoulder in plug screw aperture and the sleeve pipe and seal ring, packing ring is all suitable, can be connected the pipe Spielpassung, partly also can have some axial grooves at the plug screw screw thread, when the open-work plug screw is screwed into sleeve pipe, can produce radially deformation because of the effect of sleeve pipe inner taper makes the plug screw helical thread portion; The aperture that the external diameter of seal ring, packing ring forms greater than the hole internal shoulder less than sleeve pipe female thread portion minimum diameter can make seal ring, packing ring put into sleeve pipe easily, again can axially locating in convex shoulder; Seal ring can be that materials such as rubber, plastics, resin are made.

The utility model is rational in infrastructure, can not only be used for replacing original all types of pipe joint, can also be used for replacing original trip to appoint.Since do not need to cut with scissors screw thread to being connected pipe, thus easy to use and laborsaving, reliable, can improve construction and installation efficient, shorten engineering time, reduce construction cost.

Accompanying drawing 1, accompanying drawing 2 are embodiments of the present utility model.With reference to accompanying drawing 1, the utility model is described in further detail for accompanying drawing 2:

Connected pipe (1) puts open-work plug screw (2), packing ring (3) and seal ring (4) respectively, places sleeve pipe (5) then.When open-work plug screw (2) when being tightened, the axial compression power by packing ring (3) transmits makes seal ring (4) deformation, produces radial strain power, acts on and is connected pipe (1) outer wall and sleeve pipe (5) inwall, reaches the effect of sealing.Plug screw helical thread portion (10) front end of open-work plug screw (2) has equally distributed four grooves (9), in the process that open-work plug screw (2) is tightened, the effect of the groove (9) of 0～2 tapering and open-work plug screw (2) is arranged because of internal thread (7) part of sleeve pipe (5), make open-work plug screw helical thread portion (10) produce radially deformation, correspondingly be that plug screw helical thread portion (10) acts on the radial pressure that is connected pipe (1) outer wall, make it and to be connected pipe (1) fastening, do not produce axial activity.

Accompanying drawing 3 has been described another embodiment of the present utility model.When being connected pipe (1) and using in the less demanding environment of the external force axial to it, can adopt internal thread (7) part is the sleeve pipe (5) of garden cylindrical hole; Its plug screw helical thread portion (10) of open-work plug screw (2) must not slot (9); Seal ring (4) is that rubber is made; Its relation of being linked and packed is with identical shown in accompanying drawing 1, the accompanying drawing 2.When tightening open-work plug screw (2), seal ring (4) produces radial strain power, played reliable seal action, simultaneously, because of rubber type of material has very big friction factor, the radial strain power of seal ring (4) has in fact become it to being connected the positive pressure of pipe (1) outer wall, when such positive pressure is enough big, seal ring (4) and the frictional force that is connected between the pipe (1) are also just enough big, and is axially movable to cause connected tube (1) to be difficult for generation.

Claims

1, a kind of pipe connection device is characterized in that: have a sleeve pipe (5), seal ring and open-work plug screw (2) to constitute, seal ring (4) and open-work plug screw (2) place respectively in the sleeve pipe (5).

2, according to the described pipe connection device of claim 1, it is characterized in that: the Kong Chengyuan shape of described sleeve pipe (5), in screw thread is arranged, helical thread portion has 0～2 tapering, the axial section at internal thread (7) root place is convex shoulder (6).

3, according to claim 1,2 described pipe connection devices, it is characterized in that: described open-work plug screw (2) is to be made of plug screw helical thread portion (10) and plug screw head (8) coenosarc, and plug screw helical thread portion (10) front end has some axial grooves (9).

4, according to claim 1,2 described pipe connection devices, it is characterized in that: described seal ring (4) can be that materials such as rubber, plastics, resin are made.

5, according to claim 1,2 described pipe connection devices, it is characterized in that: between seal ring (4) and the open-work plug screw (2) packing ring (3) is housed.