CN2241257Y

CN2241257Y - Telescopic pipe joint

Info

Publication number: CN2241257Y
Application number: CN 95225980
Authority: CN
Inventors: 董书庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-15
Filing date: 1995-12-15
Publication date: 1996-11-27
Anticipated expiration: 2005-12-15

Abstract

The utility model discloses a telescopic pipe joint, which is used for installing valves, instruments, etc. on pipelines and connecting pipes. The utility model comprises a sleeve cylinder pipes with end flanges and an inserting pipe. The two pipes form an inserting pipe which is mutually inserted and matched, and the inner part of the inserting pipe is penetrated and sheathed with a pipe-shaped rubber liner; the two ends of the pipe-shaped rubber liner are provided with two flanges which are matched with the flanges of the sleeve cylinder pipe and the inserting pipe. The utility model has the advantages of simple structure, good sealing performance, capability of conveying gas, liquid, and powder or granular material and oil resisting and acid and alkali resisting performance.

Description

A kind of collapsible tubes joint

The utility model relates to a kind of pipe joint, particularly relates to a kind of collapsible tubes joint.

The Chinese patent communique discloses the pipeline extension device that a kind of publication number is CN2121598U, and it is made of telescopic pipe, intubate, seal ring, dust-blocking ring and flange.This pipeline extension device is used for the jointing of pipeline, has the advantage that in light weight, simple in structure, extending amount is big, be convenient to install.But this pipeline extension device is still very not satisfactory on sealability, damping property, sound insulation value and decay resistance, makes its using scope be subjected to certain restriction.

At above-mentioned the deficiencies in the prior art, the purpose of this utility model be to provide a kind of simple in structure, easy to use, be widely used and all reasonable collapsible tubes joint of sealability, damping property, sound insulation value and decay resistance.

For achieving the above object, the utility model has adopted a kind of collapsible tubes joint, comprise telescopic pipe and intubate, telescopic pipe and intubate each have the end sleeve that slides mutually and cooperate, constitute a cannulate, its the other end separately is provided with flange, is coated with a tubular rubber liner in the above-mentioned cannulate, and the two ends of tubular rubber liner have two flanges that match with the flange of telescopic pipe and intubate respectively.

Telescopic pipe of the present utility model is a concentric step pipe, and its internal diameter with the step part that intubate phase sleeve cooperates is identical with the external diameter of intubate, and to reach mutual slip sleeve cooperation, the internal diameter of remaining part is identical with the internal diameter of intubate; The external diameter of described tubular rubber liner is identical with the internal diameter of intubate, and its wall thickness is even.Telescopic pipe of the present utility model and intubate also can be the uniform straight tube of wall thickness; The inner orifice of described tubular rubber liner is a straight tube, but can be provided with a step on its wall thickness, its wall thickness that matches part with telescopic pipe equals its wall thickness that matches part with intubate and adds the wall thickness of intubate, i.e. the thick wall thickness that goes out intubate of its wall thickness partly that matches with intubate of the wall ratio of step part.In addition, be provided with a circle groove on the exterior edge face of two flanges of intubate of the present utility model and telescopic pipe, be provided with the prominent edge of a circle that the groove on the flange with intubate and telescopic pipe matches on the flange at tubular rubber liner two ends.

From technique scheme as can be seen, worn by a tubular rubber liner, just strengthened sealability greatly because the inwall of cannulate of the present utility model is whole; In addition, rubber itself has goodish elasticity, thereby makes the utility model under the constant situation of sealability, also has certain stretchability, simultaneously when transported substance is powdered materials or shot-like particle, has the performance of wear-resisting, vibration damping and sound insulation; If change the additive component of rubber, can also have oil resistant, different performance such as acidproof or alkaline-resisting.

The utility model is further explained and explanation below in conjunction with accompanying drawing:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is embodiment's 2 an of the present utility model structural representation.

Embodiment 1, Fig. 1 middle sleeve pipe 5 cooperates with intubate 6 mutual slip sleeves, telescopic pipe 5 and intubate 6 sleeve mutually partly have a step, and the internal diameter of this step part and the external diameter of intubate 6 sleeve that slides mutually cooperates, and the internal diameter of another part of telescopic pipe 5 is identical with the internal diameter of intubate 6.Respectively have at the two ends of intubate 6 and telescopic pipe 5 on the exterior edge face of 4, two flanges 4 of a flange circle groove 2 is respectively arranged, the wall of flange 4 is provided with fastener hole 3.Be coated with a tubular rubber liner 7 in the endoporus of intubate 6 and telescopic pipe 5, the two ends of tubular rubber liner 7 have two flanges 8, be respectively arranged with on the interior edge face of these two flanges 8 with flange 4 on groove 2 corresponding cooperations prominent along 1.

Embodiment 2, and telescopic pipe 5 and intubate 6 are two straight tubes that mutual slip sleeve cooperates, and its other end separately is provided with flange 4, has fastener hole 3 on the flange 4, and are provided with a circle groove 2 on its exterior edge face.Be coated with a tubular rubber liner 7 in telescopic pipe 5 and the intubate 6, tubular rubber liner 7 matches with telescopic pipe 5 and has a step on the wall thickness of part, the wall thickness of step part equals to process with the wall thickness of intubate 6 mating parts the wall thickness of intubate 6, and its two ends are provided with on the interior edge face of 8, two flanges 8 of two flanges all designs dashing forward along 1 of groove 2 corresponding cooperations on a circle and the above-mentioned flange 4.

Claims

1, a kind of collapsible tubes joint, comprise telescopic pipe (5) and intubate (6), telescopic pipe (5) and intubate (6) each have the end sleeve that slides mutually and cooperate, constitute a cannulate, its the other end separately is provided with flange (4), it is characterized in that being coated with in above-mentioned cannulate a tubular rubber liner (7), the two ends of tubular rubber liner (7) have two flanges (8) that match with the flange (4) of telescopic pipe (5) and intubate (6) respectively.

2, pipe joint according to claim 1, it is characterized in that described telescopic pipe (5) is a concentric step pipe, its with intubate (6) mutually internal diameter and the external diameter of intubate of the step part that cooperates of the sleeve sleeve that slides mutually cooperate, the internal diameter of remaining part is identical with the internal diameter of intubate; The external diameter of described tubular rubber liner (7) is identical with the internal diameter of intubate (6), and its wall thickness is even.

3, pipe joint according to claim 1, it is characterized in that described telescopic pipe (5) and intubate (6) are straight tube, the inner orifice of described tubular rubber liner (7) is a straight tube, its wall thickness is provided with a step, and promptly its wall thickness that matches part with telescopic pipe (5) equals the wall thickness that its wall thickness that matches part with intubate (6) adds intubate (6).

4,, it is characterized in that respectively being provided with on the exterior edge face of described two flanges (4) a circle groove (2) according to claim 1,2 or 3 described pipe joints; Respectively be provided with the prominent edge (1) that the groove (2) of a circle and flange (4) is complementary on the flange (8) at described tubular rubber liner (7) two ends and the end face that flange (4) matches.