CN200993286Y

CN200993286Y - Plastic pipeline bell and spigot joint

Info

Publication number: CN200993286Y
Application number: CN 200620167983
Authority: CN
Inventors: 范世峰; 闫向东
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-14
Filing date: 2006-12-14
Publication date: 2007-12-19
Anticipated expiration: 2016-12-14

Abstract

A novel plastic pipe spigot-and-socket joint is provided, which pertains to the field of fluid conveyance. The front end of the joint is a conic round end and is in form of an arrow; following that a neck of smaller diameter and a part with bigger diameter and threaded outer surface are provided; the thread mates with the thread on the inner diameter of the lock ring; between the front end of the joint and the lock ring, a circular washer with a gap that can be opened to certain angle is provided. At connection, the front end of the joint is inserted into a drilled plastic pipe, the plastic pipe will tightly clamp the neck of smaller diameter, the circular washer presses on the outer surface of the plastic pipe, and the lock ring presses the circular washer through the threads. With above design, the effective pressing area between the circular washer and the plastic pipe's wall is increased, plus that the thread of the lock ring applies locking force on the circular washer, the connection strength of the connection part is greatly improved, no leakage will generate when the fluid is of high pressure.

Description

The bell and spigot joint of plasticity pipeline

1, technical field: plasticity pipeline of the present utility model bell and spigot joint belongs to the fluid transmission field, relates in particular to a kind of connected element of plasticity pipeline.

2, background technique: the society that builds economizing type is the fundamental state policy of our country, and fluid transmission pipe is easy operatings, connects reliably the basic demand of various links.And the socket joint link of existing plasticity pipeline mainly is tapered round end structure, makes a call to a hole that is slightly larger than link taper round end diameter with punch during use on pipeline, and from then on link is inserted in the hole, plays the effect that connects with pipeline.When the pressure of fluid was big, because pipeline has plasticity, the attachment portion will produce distortion, caused revealing, even link extruded went, and caused fluid wastage even caused danger.Plasticity pipeline of the present utility model bell and spigot joint has overcome above deficiency, also can not produce leakage when hydrodynamic pressure is big.

3, summary of the invention: the purpose of this utility model is the plasticity pipeline bell and spigot joint that provides reliable and stable, because the annular gasket that has designed the locking ring that can lock and one slit arranged and can break into two with one's hands has reached reliable and stable using effect.

The utility model is achieved in that plasticity pipeline bell and spigot joint body front part is the taper round end and has the shape of similar arrow, thereafter is a neck neck portion and big threaded part of outer surface belt of diameter that diameter is less, this screw thread is with the threads engaged of locking ring internal diameter, and plasticity pipeline bell and spigot joint body front part is with between the locking ring being an annular gasket that has the slit can break several angle into two with one's hands.During connection, plasticity pipeline bell and spigot joint body front part is inserted in the plasticity pipeline that has openning hole, the plasticity pipeline just tightly has been stuck on the less neck of pipeline bell and spigot joint main diameter, and annular gasket is pressed in the outer surface of plasticity pipeline, and locking ring compresses annular gasket by rib-loop.

Owing to adopt such scheme, annular gasket is after locking ring tightens, be pressed in closely on the tube wall of plasticity pipeline, particularly annular gasket has a slit, annular gasket is broken into two with one's hands, just can be passed plasticity pipeline bell and spigot joint tapered diameter the best part, the neck neck portion of annular gasket endoporus homoplasy bell and spigot joint is cooperated more closely, what increased annular gasket homoplasy pipe wall effectively compresses area, also can not produce leakage when hydrodynamic pressure is big.

4, description of drawings: concrete structure of the present utility model is provided by following drawings and Examples

Fig. 1 is the connection diagram that plasticity pipeline bell and spigot joint homoplasy pipeline connects

Fig. 2 is the main body of plasticity pipeline bell and spigot joint

Fig. 3 is the plasticity pipeline sectional view that has had openning hole

Fig. 4 is that the master of locking ring looks and plan view

Fig. 5 is that the master of annular gasket looks and plan view

5, embodiment:

Legend: 1, plasticity pipeline bell and spigot joint main body 2, locking ring 3, annular gasket 4, plasticity pipeline

Embodiment: as shown in Figure 1, the annular gasket 3 that has one slit can break some into two with one's hands is installed on the neck behind the taper round end of plasticity pipeline bell and spigot joint main body 1, again the taper round end of plasticity pipeline bell and spigot joint main body 1 front portion is inserted in the hole of the plasticity pipeline 4 that has openning hole, annular gasket 3 is pressed onto on the outer wall of plasticity pipeline 4, screw locking ring 2, annular gasket 3 is pressed onto on the outer wall of plasticity pipeline 4 closely.Owing to adopt such scheme, though annular gasket 3 diameter of bores are less than the maximum diameter part of the taper round end of plasticity pipeline bell and spigot joint main body 1, because annular gasket 3 has a slit, can break into two with one's hands, annular gasket 3 just can pass the maximum diameter part of the taper round end of plasticity pipeline bell and spigot joint main body 1, and the neck neck portion of homoplasy pipeline bell and spigot joint 1 cooperates more closely, what increased annular gasket 3 homoplasy pipelines 4 tube walls effectively compresses area, improve the join strength of attachment portion greatly, when hydrodynamic pressure is big, also can not produce leakage.

Claims

1, a kind of plasticity pipeline bell and spigot joint, it is characterized in that main body 1 front portion is the taper round end and has the shape of similar arrow, thereafter is a neck neck portion and big threaded part of outer surface belt of diameter that diameter is less, this screw thread is with the threads engaged of locking ring 2 internal diameters, and plasticity pipeline bell and spigot joint main body 1 front portion is with between the locking ring 2 being an annular gasket 3 that has the slit can break several angle into two with one's hands.During connection, 4 li in the plasticity pipeline that the 1 anterior insertion of plasticity pipeline bell and spigot joint main body has openning hole, plasticity pipeline 4 just tightly has been stuck on the less neck of pipeline bell and spigot joint main body 1 diameter, and annular gasket 3 is pressed in the outer surface of plasticity pipeline 4, and locking ring 2 compresses annular gasket 3 by rib-loop.

2, plasticity pipeline according to claim 1 bell and spigot joint, the slit on the ring-like pad 3 can be vertical masonry joints, also can be R-joinings, or have the profile of tooth that cooperatively interacts of definite shape or concavo-convex side tooth profile.

3, plasticity pipeline according to claim 1 bell and spigot joint, have rib-loop on locking ring 2 endoporus, rib-loop on the size of rib-loop and the structure homoplasy pipeline bell and spigot joint main body 1 cooperates, and turn locking ring 2 can make locking ring 2 fastening being pressed on the annular gasket 3.

4, plasticity pipeline according to claim 1 bell and spigot joint, the basic structure form of utilizing its homoplasy pipeline to connect can make that plasticity pipeline socket joint is straight-through, various links such as curved logical, the plasticity pipeline spigot and socket tee of plasticity pipeline socket joint, plasticity pipeline socket joint four-way, plasticity pipeline socket joint internal thread, the outer silk of plasticity pipeline socket joint, plasticity pipeline socket joint valve, plasticity pipeline socket joint flange, plasticity pipeline socket joint plug.