CN2220000Y

CN2220000Y - Quick connecting component for pipeline

Info

Publication number: CN2220000Y
Application number: CN 94202283
Authority: CN
Inventors: 孙文革
Original assignee: 孙文革
Priority date: 1994-01-27
Filing date: 1994-01-27
Publication date: 1996-02-14
Anticipated expiration: 2004-01-27

Abstract

The utility model relates to a quick connecting component for pipelines, which comprises a screw cap 1, a spherical arc-shaped clamping ring 3 and a straight core 2, wherein, the inner diameter D of the clamping ring is equal to the outer diameter of the connecting pipeline, and the spherical arc R is equal to the screw cap which is matched with the spherical arc and the sealing surface R of the straight core; the length h of the spherical arc is larger than the length sum (h 1 + h 1) of the screw cap and the sealing surface of the straight core, and both the screw cap and the straight core are the connecting components of the sealing surface; the inner diameter of the sealing surface is equal to D, the arc degree is R, and the length is h 1. The screw cap is screwed, the clamping ring is squeezed, then the inner diameter D of the clamping ring is followed to reduce until the outer circle surface of the clamping pipeline is clamped, and then the sealing and fastening aim are reached. The utility model has the advantages of convenient assembly and disassembly, good sealing performance, high pressure resistance and long service life, and can be used for connecting the pipelines of the media, such as chemical industry, petroleum, coal gas, water, etc.

Description

Pipe line quick connection assembly

The utility model belongs to the pipeline accessory, is specifically related to a kind of pipeline connection part.

Traditional pipeline is connected with and is threaded, flange connects also welding, nearly ten years, pipeline to unlike material, be developed into dissimilar pipeline connecting parts, wherein relatively more novel have a collet-type pipeline connecting parts (CN88207708), (as Fig. 1), comprise nut, straight-through core, rubber ring, the moulding circle, by being threaded of nut and straight-through core, the slope crush seal of rubber ring moulding circle reaches the purpose of the pipeline that is tightly connected, though its Placement is simpler than traditional Placement, but when practical operation, still have many inconvenience, as when installing, at first will take the accessory constituent element one by one apart, be inserted in the pipeline two ends respectively, and when used rubber ring is reinstalled, can cause the variation of its size and influence sealing effect, and the not anti-oil of general rubber ring, not corrosion-resistant, therefore non-refractory directly influences the working life and the using scope of product.

The purpose of this utility model is the deficiency at above-mentioned pipeline connecting parts, provides a kind of easy to operate, long service life, and using scope is wide, withstand voltage higher pipe line quick connection assembly.

Pipe line quick connection assembly of the present utility model, comprise nut, Sealing, and straight-through core, it is characterized in that described Sealing is a kind of spherical arc shape clamping ring, its inside diameter D equals the external diameter of pipeline to be connected, the nut that its ball arc R equals to match therewith and the sealing surface R of straight-through core, and the lonely length h of its ball is greater than nut and straight-through core sealing surface length sum (h1+h1); Nut is that a kind of conduit mouth internal diameter is that D, sealing surface are ball arc R, and the ball arc length is the threaded fastener of h1; Straight-through core is that a kind of internal diameter is that D, sealing surface are ball arc R, and the ball arc length is the straight-through link of the double end of h1.

Be elaborated below in conjunction with accompanying drawing:

Fig. 1 is the user mode figure of the utility model correlation technique;

Fig. 2 is the user mode figure of the utility model pipe line quick connection assembly;

Fig. 3 a, b, c are the structural representations of the quick link of the utility model pipeline;

By accompanying drawing 2 as seen, a figure left side is that pipeline inserts in the pipe line quick connection assembly Situation, at this moment the ball arc sealing of the sealing surface of nut 1 and straight-through core 2 and clamping ring 3 Face has contacted sealing, and the clamping ring inner surface is then not tight with pipe 4 outer surfaces to be connected Connect airtight tactilely, the figure right side is pipe 4 tight connection status to be connected, namely inserts when pipe 4 to be connected After entering coupling assembling of the present utility model, screw nut 1, nut 1 and straight-through core 2 Sealing surface is gradually close, until two sealing surfaces join, clamping ring 3 is to nut and straight-through The sealing surface direction of core moves, meanwhile, because clamping ring ball arc sealing face length Spend h greater than nut and straight-through core sealing surface length sum (h1+h1), and make clamping ring Internal diameter constantly reduce, until the outer garden face of clamping pipe, thereby it is tight to reach sealing Solid purpose.

Such as Fig. 3 a, b, shown in the c, nut of the present utility model, straight-through core and clamping ring Inner diameter D determine by general outer diameter tube, D is slightly larger than outside the general pipeline Directly, and above-mentioned two kinds of connector sealing surface R, should equal the R of clamping ring ball arc, clamp Circle thickness b and h mainly determine according to D, when D=20～50mm, and b=1～1.3mm , h=D/3; D=50～100mm, b=1.3～2.3mm, h=d/5; D=100～170mm, b=2.3～3.2mm, h=d/8; And h1 approximates h/3, and R can calculate according to h, b (R=(h²－4b ²)/8b)。

For example, connecting inside nominal diameter is the zinc-plated pipeline of 15mm, and its outside dimension is 21.3mm, can select following design size so:

Nut: D=21.8mm R=8 h1=2.5mm

Straight-through core: D=21.8mm R=8 h1=2.5mm

Clamping ring: D=21.8mm R=8 h=8mm, b=1mm

All the other are fit dimension, can amplify according to the profile length and width of product or dwindle, but certain limit is arranged, otherwise do not reach the pressure testing requirement.

Pipe line quick connection assembly described in the utility model can be according to the difference of the pipeline that connects, select for use different materials to make, nut, straight-through core can be selected cast iron, copper, stainless steel or highstrenghtpiston for use, the clamping ring that matches therewith then can be selected copper for use, stainless steel, cast iron or highstrenghtpiston.

When using pipe line quick connection assembly connecting tube of the present utility model, only need the burr of tubing are removed, plug-in package screws nut and gets final product, and it is promptly dismountable to unscrew nut, very convenient; Select appropriate materials to make clamping ring, good seal performance, good pressure-resistant performance, working pressure can reach 60 kilograms, and repeatedly mounting or dismounting still have good sealability, long service life, thereby using scope is very wide.

Embodiment one:

The cast iron nut, cast iron leads directly to core, the brass clamping ring, its key dimension is:

Nut: D=167mm, R=22, h1=7mm

Straight-through core: D=167mm, R=22, h1=7mm

Clamping ring: D=167mm, R=22, h=22mm, b=2.8mm.

It is the Coating Steel Pipe of 150mm that this pipeline quick connection assembly connects latus rectum, 45 kilograms of working pressures, and serviceability temperature is at 200 degrees centigrade, and medium is neutral liquid or gas, does not find seepage.

Embodiment two:

The cast copper nut, cast copper leads directly to core, the brass clamping ring, its key dimension is:

Nut: D=30.5mm, R=8, h1=2.5mm

Straight-through core: D=30.5mm, R=8, h1=2.5mm

Clamping ring: D=30.5mm, R=8, h=8mm, b=1.0mm.

Be used to connect the copper pipe that external diameter is 30MM, working pressure is at 50 kilograms, and serviceability temperature is at 250 degrees centigrade, and medium is neutral liquids and gases, does not find seepage.

Embodiment three:

ABS plastic nut and straight-through core, the collar of .ABS plastic clip, key dimension is:

Nut: D=50.5mm, R=12, h1=4mm

Straight-through core: D=50.5mm, R=12, h1=4mm

Clamping ring: D=50.5mm, R=12, h=12mm, b=1.4mm.

Be used to connect the rigid PVC that external diameter is 50mm, under 80 degrees centigrade, medium is neutral liquid to working pressure, does not find seepage at 10 kilograms, temperature.

Claims

A kind of pipe line quick connection assembly, comprise nut 1, Sealing 3, and straight-through core 2, it is characterized in that described Sealing is a kind of spherical arc shape clamping ring 3, its inside diameter D equals the external diameter of pipeline to be connected, the nut that its ball arc R equals to match therewith and the sealing surface R of straight-through core, its ball arc length degree h is greater than nut 1 and straight-through core 2 sealing surface length sums (h1+h1), nut 1 is that a kind of conduit mouth internal diameter is D, and sealing surface is the lonely R of ball, and the ball arc length is the threaded fastener of h1, straight-through core 2 is that a kind of internal diameter is that the sealing surface of D is ball arc R, and the ball arc length is the straight-through link of the double end of h1.