CN2228595Y

CN2228595Y - Leakage-proof device for pipe line joint

Info

Publication number: CN2228595Y
Application number: CN95206981U
Authority: CN
Inventors: 陈铭水
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-31
Filing date: 1995-03-31
Publication date: 1996-06-05
Anticipated expiration: 2005-03-31

Abstract

The utility model relates to a leakage-proof device for pipeline joints, particularly a leakage-proof device suitable for coal gas pipeline joints and water pipeline joints, comprising a rubber ring and a forced combining ring, wherein, the inner edge of the rubber ring is provided with a concave ring, and the outer edges on the two sides of the rubber ring are provided with converging bevels; the concave ring of the inner edge of the rubber ring is provided with the telescopic forced combining ring which can be overlapped at a switching-off and a congregating point and has a circular arc-shaped section to improve the leakage-proof effect of the pipeline joints consequently.

Description

Novel pipe joint leakage protection device

The utility model relates to the leakage protection device in a kind of pipe joint, especially is suitable for the leakage protection device of coal gas, water lines joint.

At present, all have the pipeline setting in kitchen, bathroom and the factory of general family, the company, as: gas pipe, water pipe etc., in order to carry gas or water.The installing of these pipelines is not directly to be installed by a delivery pipe to finish, but must be under the needs that cooperate the covered court, do suitable bent angle or shunting, so just can make pipeline in the indoor configuration that obtains an orderliness shape, in bent angle or shunting place, then connect with the pipeline with bent angle shape or distribute valve to be formed by connecting and require to connect reliable and good airproof performance, especially coal gas class pipeline more requires Security.Pipe joint commonly used is tightened leakage protection device, mainly tiltedly tieing up cushion rubber by the outer shroud that is installed in the valve body both sides stings gear ring and forms with compeling to close, make inclined end face that is engaged in valve body two inboards and the convergence conical surface packing engagement that is located at root edge in the hollow lock again, tighten delivery pipe to reach, prevent that inner fluid from leaking outside.So in the leakage protection device, compel to close that to sting gear ring be to go out delivery pipe by stinging the tooth interlock, it is tightened and only is a some contact condition, promptly after Double-disc dialing puzzle lock locking, delivery pipe can not be fixed on the valve body fully, and has when exerted pressure by external force, and delivery pipe breaks away from the phenomenon of valve body.

In view of this, the purpose of this utility model provides a kind of leakage protection device of novel pipe joint, the cushion rubber of placing a band scrobicular ring inner edge between joint body, Double-disc dialing puzzle lock and delivery pipe and in its scrobicular ring the contractile arcuation of inclusion compel to close circle, tighten delivery pipe to become the line contact.

The purpose of this utility model is achieved in that novel pipe joint leakage protection device, it is characterized in that: it comprises that a cushion rubber and compels to close circle, wherein, the inner edge of cushion rubber has scrobicular ring, the both sides outer rim has the convergence inclined-plane, in the inner edge scrobicular ring of cushion rubber, be provided with one contractile, and can be inside and outside at the disconnection place of joining overlapping circular-arc section compel to close circle.

Owing to adopt such scheme: improve pipe joint leakproof effect.

Below in conjunction with drawings and Examples the utility model is further specified.

The three-dimensional exploded view of Fig. 1 the utility model exemplary embodiments.

Fig. 2 the utility model exemplary embodiments generalized section.

Fig. 3 the utility model exemplary embodiments Double-disc dialing puzzle lock is the locking state longitudinal sectional drawing not.

Fig. 4 the utility model exemplary embodiments Double-disc dialing puzzle lock is the locking state transverse cross-sectional view not.

Fig. 5 the utility model exemplary embodiments Double-disc dialing puzzle lock locking state is indulged schematic representation.

The horizontal schematic representation of Fig. 6 the utility model exemplary embodiments Double-disc dialing puzzle lock locking state.

As shown in Figure 1, 2, present embodiment ties up to and connects body 1, Double-disc

dialing puzzle lock

2 and 5 of delivery pipes and place an inner edge and have the cushion rubber 3 that scrobicular ring 31, both sides outer rim have convergence inclined-plane 32, and inner edge scrobicular ring 31 places that are positioned at this cushion rubber 3 also inclusion be provided with one contractile and disconnect that the place of joining is can 41, outer 42 overlapping, section is the garden arcuation compel to close and enclose 4, wherein, the interior root edge of this joint body 1 has the convergence conical surface 11, and the root edge of this Double-disc dialing puzzle lock 2 has oblique convergence face 21.

Shown in Fig. 3,4, when hollow tapered end 2 when not locking, its cushion rubber 3 with compel to close circle 4 and be lax shape; When cushion rubber 3 is subjected to Double-disc dialing puzzle lock 2 packings, promptly borrow joint body the 1 set convergence conical surface 11 and Double-disc dialing puzzle lock 2 set oblique convergence faces 21, cushion rubber 3 is rescued gradually to inner edge and is contracted, simultaneously interlock compels to close also diameter reduction gradually of circle 4, shown in Fig. 5,6, compel wherein to close that rescuing of circle 4 contract is interior 41, outer 42 overlapping relations of borrowing its place that joins, make and compel to close circle 4 and have the effect of being expanded or shrinking; In addition, compeling to close circle 4 is to borrow its circular arc section, makes itself and delivery pipe 5 be the line contact condition, thereby, firmly delivery pipe 5 is firmly grasped.

In sum: the inside, joint of joint body 1 of the present utility model, not only by the obstruction of cushion rubber 3, inner fluid can't be leaked outside, still borrow the reduced of compeling to close circle 4, be the line contact condition and it is tightened, thereby delivery pipe 5 is positioned over firmly in the pipe joint, even any break-off can not take place in the external force of being subjected to yet.

Claims

A kind of pipe joint leakage protection device, it is characterized in that: it comprises that a cushion rubber and compels to close circle, wherein, the inner edge of cushion rubber has scrobicular ring, the both sides outer rim has the convergence inclined-plane, in the inner edge scrobicular ring of cushion rubber, be provided with one contractile, and can be inside and outside at the disconnection place of joining overlapping circular-arc section compel to close circle.