CN2392066Y

CN2392066Y - Free type leakage-proof engineering plastic expansion-compensation joint

Info

Publication number: CN2392066Y
Application number: CN 99234122
Authority: CN
Inventors: 雷一怒
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-24
Filing date: 1999-09-24
Publication date: 2000-08-16
Anticipated expiration: 2009-09-24

Abstract

The utility model relates to an expansion-compensation joint matched with a plastic pipe, which comprises an outer sleeve, and a rubber expansion-compensation sleeve, wherein, both ends of the rubber expansion-compensation sleeve are clamped on an inner sleeve, and both ends of the outer sleeve are provided with outer covers which are fixed on the outer sleeve by screws. The utility model has the characteristics of good leak resistance and pressure resistance, long service life, small size, convenient installation and beautiful appearance.

Description

Free style leakproof worker moulds expansion joint

The utility model relates to a kind of plastic pipe union.

At present, the end rubber ring is all adopted in the expansion joint that city's pin is supporting with moulding pipe, lock person in charge's outer wall through the termination, rubber ring is close to is responsible for the outer wall sealing, rely on the elasticity of rubber ring, be subjected to the person in charge under the situation of cold and hot temperature variation, friction is moved, and reaches person in charge's telescopic action.This rubber ring has following defective: the one, and rubber ring is close to pipe table friction, causes the tube-surface wearing and tearing to leak, and has to continue to tighten lock screw, mould pipe during high temperature and tighten in the deliquescing of position and contract, during low temperature, mould the pipe sclerosis, cause fray not parallel, unable to bear hydraulic pressure and leak; The 2nd, rubber ring locks is responsible for the sealing additional pressure, has a strong impact on freely stretching of pipe shaft, is difficult to guarantee using effect.

The purpose of this utility model is to provide a kind of leak resistance, and good worker moulds expansion joint.

The purpose of this utility model is achieved through the following channels: free style leakproof worker moulds expansion joint, one rubber telescopic cover is arranged in overcoat, and overcoat two ends inwall has interior cover, puts in the two ends of rubber telescopic cover are stuck in, at the two ends of overcoat one enclosing cover is arranged, enclosing cover is screwed on the coat.

The utility model has following advantage: the one, and change and rely on the rubber ring pipe shaft to be close to friction to be communicated with the main tube end wire connection for interior cover, the person in charge can not have pressure outside automatically and stretches; The 2nd, be responsible for the passage smoothness, eliminate outer additional pressure and friction, eliminate the pipe shaft wearing and tearing, it is flexible to guarantee to be responsible for nature, prevents to seal the position and leaks, and improves the pressure that bears water; The 3rd, overcome because of temperature change, the additional pressure of pin clamping device causes transducer wall ' s abrasion, eliminates additional drag again, and the person in charge can freely be stretched; The 4th, easy for installation, no load shrinks, the leakproof good pressure-resistant performance, and more than the water pressure resistance 6MPA, long service life, volume reduces, and profile is more attractive in appearance.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is a partial cross sectional views of the present utility model;

As shown in Figure 1: a rubber telescopic cover 4 is arranged in overcoat 3, cover 5 in overcoat 3 two ends inwalls have, interior cover 5 can move along outer casing inner wall, overlap on 5 in the two ends of rubber telescopic cover 4 are stuck in, the person in charge 6 has an enclosing cover 1 with the two ends that interior cover 5 is threaded in overcoat 3, be used for fixing and be responsible for 6, enclosing cover 1 usefulness screw 2 is fixed on the overcoat 3.

Claims

1. a free style leakproof worker moulds expansion joint, it is characterized in that: a rubber telescopic cover [4] is arranged in overcoat [3], overcoat [3] two ends inwall has interior cover [5], the two ends of rubber telescopic cover [4] are stuck on the interior cover [5], at the two ends of overcoat [3] enclosing cover [1] is arranged, enclosing cover [1] is fixed on the overcoat [3] with screw [2].