CN2172391Y - Radial shaft two-way sealing pipe joint - Google Patents

Abstract

The utility model relates to a clamping casing type pipeline disassemble connection piece having a two-way sealed radial shaft. The utility model is composed of an upper and a lower noumenons (piece 1, piece 2) which are divided alone an axial direction, an upper and a lower sealing pieces (piece 3) which are assembled in the upper and the lower noumenons, and a plurality of pairs of bolts and nuts (piece 4, piece 5, and piece 6). After the bolts and the nuts are screwed tightly, the sealing piece which is positioned on a combination face is pressed, and simultaneously, the sealing pieces which are simultaneously positioned in the noumenons and outside a pipe wall tightly cohere on the circumferential face of the outer wall of a pipe for reaching the effects of sealing and connection. When the utility model is used, thread machining and welding are not needed, construction is convenient, and expansion compensation can be replaced. The utility model is applied to various pipe specifications and various hard pipe materials, and is applied to the various pipeline engineering, such as shipbuilding, petrochemical industry, building, etc.

Description

Radial shaft two-way sealing pipe joint

The utility model is the pipeline releasable connection part of a kind of stuck type footpath axle two way sealed.Particularly a kind ofly need not to weld, need not screw thread processing, easy construction and the desirable pipe joint of managing on behalf of another expansion compensation.

At present, the most frequently used various low pressure pipeline links can be divided into flange substantially and connect and the two big classes that are threaded.These two kinds connect pattern and all exist the some shortcomings part.

Flange connects:

1. flange is fixed by welding on the pipe, and welding itself is a kind of poisonous and harmful operation, particularly for Coating Steel Pipe.

2. manufacturing procedure is various, and the cycle is long.After bend pipe (or pipe arrangement), need to locate, weld, beat steel seal, scarfing cinder polishing, pressure test (inspection welding quality), zinc-plated operations such as (or other processing) through flange.

3. make mistakes easily.In course of working, the flange screw position is fixed wrong, flange does not reach phenomenons such as requirements, flange welding back distortion and happens occasionally with the pipe perpendicularity, pinpoints the problems during to installation just must prescind flange and do over again, and the expense of taking a lot of work is expected.

Be threaded:

1. mouth of pipe machining screw is cumbersome.

2. all must be higher to the centering requirement of the external dimension of pipe fitting and two pipes that link to each other.

3. need use benzene heavy industry tool, labor intensity height when installing.

4. be confined to the less pipeline of specification.

Task of the present utility model is that a kind of need not to weld, need not screw thread processing, pipeline releasable connection part available light instrument installation, that be applicable to various hard tubings and pipe specification will be provided, simplify construction process to reach, improve working conditions, reduce labor intensity, easy to installation and maintenance, reduce spillage of material, improve the purpose of construction quality and production economic benefit.

The utility model is realized by following method:

One. utilize the tube outer wall circumferential surface as sealing surface.

Two. use rubber product as sealing material, and be processed into certain shape, it is assemblied in the link body interior.

Three. the link body is carried out split vertically together with Sealing.

Four. deciliter locate to be provided with on the position perpendicular to axial direction some ear seats and be furnished with the fastening screw of using at the body of link.

Five. the fastening bolt and nut that runs through in the ear seat, the body distance is dwindled, compressing is located in the link body, is close to the Sealing of tube outer wall, make its tightly obvolvent on the tube outer wall circumferential surface, reach the axial seal of pipe.Reach the radial seal of pipe after Sealing on the junction plane compresses simultaneously again.

Because this joint is split vertically, needn't fix with the pipe that links to each other, so need not welding, need not screw thread processing, former straight tube can zinc-plated in advance (or other processing) can enter installation behind the bend pipe (or pipe arrangement) then.

Because the Sealing obvolvent is on the tube outer wall circumferential surface, and selects the rubber-like rubber material for use, leave certain clearance between two pipe ends when mounted simultaneously, therefore when the pipeline expanded by heating, can reach the effect of expansion compensation.

Because the ear seat of fastening usefulness is located on the axially vertical position of pipe,, select the position of most convenient to construct so this pipe joint can 360 ° of rotations when mounted.

Be used for fastening bolt and select for use double end to take tooth bolt, therefore in installation, only need just can carry out with a slight wrench.

When mounted free state of the straight-through pattern that Figure 1 shows that this pipe joint (promptly as yet not the state during tightening nut), body (part 1, part 2) is used malleable cast iron, and part 3 is upper and lower two rubber seals with certain degree of hardness.Part 4 is the common double hook bolt.Part 5, part 6 are common hexagon nut.After tightening gland nut (part 5), two Sealings are integrated up and down, and each pipe end form twice radially be fastened on seal ring on the tube outer wall, and these seal rings are to be connected as a single entity by structural type own, and have radial seal of one's own, so form a sealing area.Behind part 5 nut screwing clampings, tighten part 6 nuts again, take place loosening to prevent pipeline nut when being shaken.This pattern is applicable to that (≤1.6Mpa) service pipe because sealing material is a rubber product, so be not suitable for high-temperature pipe, can only be applicable to the service pipe of normal temperature (30 ℃～200 ℃) to low pressure.Fig. 2, Fig. 3 are the other two kinds of Sealing patterns under the constant situation of body pattern.The Sealing of Fig. 2 be pattern obvolvent with circumferential surface on tube outer wall, establish some unloading holes in the circumferential surface direction simultaneously.The sealing of Fig. 3 will be suitable for the higher pipeline of pressure, its body needs to make with forged steel pieces, after body compresses, Sealing in the middle of two pipe ends is pressed on mouth of pipe section face place, after having pressure in the pipe, and while pressurized on the rubber parts circumferential surface between two pipe ends, this pressure radially is being delivered on the link body, axially then be delivered on the mouth of pipe end face, compress the mouth of pipe, improve sealing effect.Certainly, each can bear much pressure to these three kinds of seals style actually, can only could determine after the trial-production pressure testing.

This pipe joint can be made " leading directly to " " right angle " three links and joint geometries such as " crosses " according to the said structure principle, connects needs with the difference that satisfies in the pipeline construction.

The body of this pipe joint can be selected different materials as required for use, as goods such as steel, iron, aluminium, plastics and potteries.The also available conventional hexagonal-head bolt-through of bolt that compresses usefulness is between the ear seat hole of body up and down.

This pipe joint is applicable to various pipework such as shipbuilding, oil, chemical industry, building.

Claims (3)

1, a kind of stuck type footpath axle two way sealed pipe joint by upper body 1, down body 2, laterally zygomorphic Sealing 3, and some fastener bolt 4, nut 5, stop-nut 6 are formed.It is characterized in that: be assemblied in intrinsic Sealing, be divided into two-part vertically, and unite two into one into pipe joint integral body with body.

2, stuck type according to claim 1 footpath axle two way sealed pipe joint, it is characterized in that: have upper and lower two to utilize the tube outer wall circumferential surface separately as axial seal face, the Sealing plane that utilizes upper and lower body junction plane place is as radial sealing surfaces, and the Sealing that will be connected as a single entity by the certain structure form as the Sealing of axial seal and radial seal simultaneously.

3, stuck type according to claim 1 footpath axle two way sealed pipe joint, it is characterized in that: upper and lower body shaft to deciliter, and ear seat and ear seat hole be set on position perpendicular to axial direction, fastening bolt and nut in body ear seat hole up and down, dwindle the distance between upper and lower body, make and be located at upper and lower intrinsic semi-round ring shape Sealing and be integrated obvolvent tightly on the pipe circumferential surface, and compress the Sealing at upper and lower body junction plane place, the sealing that realizes two pipe ways be connected.

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