CN201739676U

CN201739676U - Hose coupler

Info

Publication number: CN201739676U
Application number: CN2010202785526U
Authority: CN
Inventors: 杨富永
Original assignee: Dongfang Electric Machinery Co Ltd DEC
Current assignee: Dongfang Electric Machinery Co Ltd DEC
Priority date: 2010-07-30
Filing date: 2010-07-30
Publication date: 2011-02-09
Anticipated expiration: 2020-07-30

Abstract

The utility model provides a hose coupler, comprising a pipe expanding bolt, a pipe hoop nut, and a connecting moveable nut; the pipe expanding bolt is provided with an overall-structured screw thread segment and a cylinder-shaped bolt head, the external diameter of the screw thread segment is matched with the inner diameter of the connected hosepipe, the center of the bolt is provided with a longitudinal through hole, the cross section shapes of the through hole are provided with two types, wherein a circular hole is corresponding to the part of the screw thread segment, a regular polygon spanner hole is corresponding to the part of the bolt head; the inner hole of the hoop pipe nut is a stepped hole, a small diameter segment is a screw thread hole, and is matched with the screw thread of the pipe expanding bolt, the inner wall surface of the big diameter segment is an antislip face and is matched with the external diameter of the connected hosepipe, the hosepipe is located in the gap between the big diameter segment and the pipe expanding bolt screw thread segment; the inner hole of the connecting moveable nut is a stepped hole, a small diameter segment is a light hole, and is empty sleeved on the outer cylindrical face of the screw thread segment of the pipe expanding bolt, the big diameter segment is a screw thread hole, and is matched with the external screw thread of the connected tool; the pipe expanding bolt head is located in the thread hole of the connecting moveable nut. The hose coupler is advantaged by high joint strength, good sealing property, no aid of special tool during assembling and disassembling, easy, fast, and labor-saving operation, completion by handwork.

Description

Hose coupling

Technical field

The utility model relates to pipe joint, specifically, is a kind of hose coupling, especially is fit to the high-pressure working medium of daily production.

Background technique

Manufacturing operation scene in enterprise, the equipment that some using gases or liquid-working-medium are often arranged, the conveyance conduit of medium adopts flexible pipe, it is a kind of commonplace phenomenon that the connection of all kinds of high and low pressure flexible pipes is used, and is that the hot working unit of working medium is all the more so with oxygen, combustion gas, pressurized air and nitrogen, hydrogen, argon, carbon dioxide etc. especially.The connection of flexible pipe, mode generally all adopts iron wire binding or pipe collar (comprise and be squeezed into pattern pipe collar and screw tension formula pipe collar) to be connected, the common feature of these three kinds of Placements is to make the flexible pipe of tied or banding produce internal withdraw type extrusion-deformation, internal surface or inner tube internal surface by flexible pipe, realize sealing and be connected with the anti-slip frictional resistance that is connected between tube core (the inverted cone surface pipe joint or the smooth straight joint of the band CONCENTRIC REDUCER diameter) outer surface, its connection power only results from pipe internal surface, do not using special tooling, its join strength under the situation of instrument, sealing all is difficult for guaranteeing, leak easily, even come off, and charge and discharge operations is loaded down with trivial details, effort.

The model utility content

The purpose of this utility model provides a kind of hose coupling that does not have above-mentioned shortcoming.

The technical solution of the utility model is:

A kind of hose coupling is made of expand tube bolt, banded penstock nut, connection nut combinations alive.Described expand tube bolt has integrally-built thread section and cylindric bolt head, the external diameter of thread section matches with the internal diameter that is connected flexible pipe, there is longitudinal hole at the center of this bolt, the sectional shape of this through hole has two kinds, wherein corresponding thread section partly is a circular hole, and corresponding bolt head partly is the regular polygon driving hole; The endoporus of described banded penstock nut is a shoulder hole, reduced diameter section is a tapped hole, matches with the screw thread of expand tube bolt, and the inner wall surface of enlarged diameter section is a non slip surface, match with the external diameter that is connected flexible pipe, in the gap of flexible pipe between this enlarged diameter section and expand tube bolt thread section; The endoporus of described connection nut alive is a shoulder hole, reduced diameter section is a unthreaded hole, sky is enclosed within on the external cylindrical surface of expand tube bolt thread section, the aperture is slightly larger than the external diameter of expand tube bolt thread section, enlarged diameter section is tapped hole and Gewindefreistiche hole, match with the outside thread that is connected frock, instrument, the internal diameter of this tapped hole greater than or be slightly larger than the external diameter of expand tube bolt bolt head, bolt head is positioned at this tapped hole.

The thread section of described expand tube bolt is divided into two sections, and two sections pitch is identical, and screw thread is continuous, one section by bolt head is the standard round male screw, match with the banded penstock nut thread, one section that leans on the bolt tail is the non-full V-thread of band tapering, and correspondence is connected the internal surface of flexible pipe.

The tail end of described expand tube bolt has cylindric smooth guide section, and the external diameter of this guiding section equals or is slightly larger than the internal diameter that is connected flexible pipe.The endoporus of described expand tube bolt bolt head part is the regular hexagon driving hole.

There is a step seam end of described expand tube bolt bolt head, and " O " shape rubber seal is arranged on the seam.

The non slip surface of described banded penstock nut is annular knurl non slip surface or screw thread non slip surface.

The outer cylinder of described banded penstock nut has anti-skidding line or regular hexagon spanner position.

Should there be the suitable tool withdrawal groove of width at the pretension connecting thread place of described connection nut alive.

The beneficial effects of the utility model:

The hose coupling of said structure, join strength height, good seal performance are difficult for leaking, and more difficult drop-off, and loading, unloading need not by special tool, and is easy and simple to handle, quick, laborsaving, can finish by hand.

Description of drawings

Fig. 1 is a kind of assembly structure figure of this hose coupling;

Fig. 2 is a kind of structural drawing of expand tube bolt among Fig. 1;

Fig. 3 is the structural drawing that connects the nut of living among Fig. 1;

Fig. 4 is the structural drawing of banded penstock nut among Fig. 1.

Code name implication: A-connects the nut of living among the figure; B-expand tube bolt; C-banded penstock nut; D-is connected flexible pipe; E-" O " shape rubber seal; The 1-inner hexagonal hole; The 2-pipe connects outside thread; 3-expand tube outside thread; 4-hose guide section; 5-pretension connecting thread; The 6-pipe connects internal thread; The 7-non slip surface; 8-step seam; The 9-tool withdrawal groove; The 10-step hole.

Embodiment

Referring to Fig. 1 to Fig. 4.

Referring to Fig. 1: this bloated hoop formula joint is mainly formed by connecting the nut A that lives, expand tube bolt B, banded penstock nut C three parts.

Referring to Fig. 2: the expand tube bolt B is connected outside thread 2, expand tube outside thread 3 and hose guide section 4, step seam 8 and is formed by inner hexagonal hole 1, pipe.

Inner hexagonal hole 1 should be selected in standard inner hexagonal hole system, and selection principle is to be slightly larger than or the through-hole diameter that equals the expand tube tube core is as the criterion with the inner hexagonal hole inscribed circle diameter, to guarantee joint maximum through hole rate-of flow is arranged.

Pipe connects the cylindrical segment and the conical section of outside thread 2 and the same flank of thread of expand tube outside thread 3 genus; Pipe connects the major diameter of thread of outside thread 2, can determine that the minor diameter of thread of pipe connection outside thread 2 is advisable with the internal diameter that is slightly larger than or equal to be connected sebific duct D according to the aperture that is connected flexible rubber hose D in conjunction with the elastic force experiment that is bonded sebific duct D material; Pipe connects the fine thread of outside thread 2 general selection standards, pitch or thread form height with sebific duct in elasticity when experiment of making material, the changing value of internal diameter removes " 2 " and chooses the pitch value of close standard thread, choose like this, it is the internal surface that is connected sebific duct D in order to allow, the major diameter of thread and the core diameter of thread that are connected outside thread 2 with pipe are effectively fitted, and increase the tightness that is connected sebific duct D; Pipe connects the flank of thread processing length of outside thread 2, high-voltage tube generally should be more than or equal to being connected 2.5 times of sebific duct D inner diameter values, low-voltage tube generally should be more than or equal to being connected 1.5 times of sebific duct D inner diameter values, otherwise can be not enough because of join strength, causes the slippage that is connected sebific duct D easily; After pipe connection outside thread 2 is processed by selected standard thread, its major diameter of thread should be processed into spiral inverted cone surface with half pitch thread, form 3 sections of expand tube outside threads, conical surface end diameter equals the selected core diameter of thread+this core diameter of thread " 1% " millimeter and is advisable, inverted cone surface length should be processed 2/3 of total length more than or equal to screw thread, can effectively increase the tension resistance to spalling that is connected sebific duct D like this, also can make to be connected the in use easier mounting or dismounting of sebific duct D.

Flexible pipe introduction segment 4: this section outer diameter can equal to be connected " 0.5% " millimeter of internal diameter+this sebific duct inner diameter values of flexible rubber hose D; After design length should be banded penstock nut C and is screwed into rigging position, the protruded length of sebific duct introduction segment, can be more than or equal to " 1/2～3/5 " that is connected sebific duct D inner diameter values, and the end face of introduction segment 4 should be processed into the chamfer surface of 30 ° or 45 °, and the desirable flexible pipe introduction segment of chamfering width external diameter is worth 5%～10% to be advisable; The effect of flexible pipe introduction segment 4, the one, guiding is connected flexible rubber hose D, make on its screw thread conical surface that easier is pushed onto expand tube outside thread 3, the 2nd, supporting is connected flexible rubber hose D, make the inner and outer pipe face that is connected flexible rubber hose D form the changeover portion of a slyness, avoid being connected sebific duct D in use, because of the continuous variation of working position, and the phenomenon that causes folding pipe, pipe cutting, tears the squib at pipe and pipe joint place.

But suit one " O " shape rubber seal E on the step seam 8, like this with joint with after frock, instrument are connected, manually tighten and connect the nut A that lives and just can obtain airtight effect preferably.

Referring to Fig. 3: connect the nut A that lives, by pretension connecting thread 5, tool withdrawal groove 9, step hole 10 is formed.Pretension connecting thread 5 is to connect connecting thread in the nut A structural that lives, its diameter of thread and pitch all should be processed into existing weldering, cut frock, instrument thread parameter consistent, the expand tube bolt B insert to connect is lived behind the nut A, by pretension connecting thread 5 in the thrust that produces on the step surface of step hole 10 the expand tube bolt B is fitted in weldering, cuts frock, on the instrument.There is the suitable Gewindefreistiche of a width 9 at pretension connecting thread 5 places that connect on the nut A that lives, after the width of this tool withdrawal groove 9 inserts connection nut A alive with the expand tube bolt B, " O " shape rubber ring E that is enclosed within on the expand tube bolt B just is stuck in the groove, and connecting the nut A that lives this moment can be advisable around flexible rotation of expand tube bolt B, its objective is to make " O " shape rubber ring E that is sleeved on the expand tube bolt B in use be difficult for the nature slippage.

Referring to Fig. 4: the pipe connecting thread 6 on the banded penstock nut C is internal threads, and its thread parameter pipe connects outside thread 2 unanimities, belongs to inside and outside matching thread.The flank of thread processing length of this screw thread 6 can equal or be slightly larger than pipe and connect 1/2 of outside thread 2 diameters.

The minor diameter of thread of screw thread non slip surface 7 can change 1/3 of franchise value according to the external diameter that is connected flexible rubber hose D+external diameter and determine that can make banded penstock nut C like this when not being subjected to being connected the tension force of sebific duct D, easier being set to by sky is connected on the sebific duct D.Non slip surface 7 also can be processed into the annular knurl non slip surface.

The outer cylinder of banded penstock nut C should process six square spanner positions or on external cylindrical surface annular knurl so that at joint dress, grip with hand when tearing open.

The cargo handling process of this joint:

During installation, earlier banded penstock nut C is enclosed within on the tube head that is connected flexible pipe D, to connect the nut A sky of living again is enclosed within on the expand tube bolt B, the pipe connecting thread 6 and the endoporus that is connected flexible pipe D on the guiding section aligning banded penstock nut C that is with the expand tube bolt B that connects the nut A that lives, hold banded penstock nut C with hand or spanner, it can not be rotated, inner hexagon spanner is inserted in the inner hexagonal hole 1 of expand tube bolt B and axially firmly turn the expand tube bolt B along the expand tube bolt.The expand tube bolt B also screws until screw thread travel with banded penstock nut C when screw-in is connected flexible pipe D and finishes, joint just is installed on the flexible pipe, at last " O " shape rubber seal E is sleeved on the step seam 8 of expand tube bolt B, and will connect the screw thread that pretension connecting thread 5 on the nut A that lives is aimed at connected equipments or instrument, to connect the nut A that lives with spanner (or directly using hand) tightens, like this, just realized being connected of flexible pipe and equipment or instrument.Unloading process is opposite with said process.

Claims

1. hose coupling is characterized in that: described hose coupling by expand tube bolt, banded penstock nut, connect the nut combinations of living and constitute; Described expand tube bolt has integrally-built thread section and cylindric bolt head, the external diameter of thread section matches with the internal diameter that is connected flexible pipe, there is longitudinal hole at the center of this bolt, the sectional shape of this through hole has two kinds, wherein corresponding thread section partly is a circular hole, and corresponding bolt head partly is the regular polygon driving hole; The endoporus of described banded penstock nut is a shoulder hole, reduced diameter section is a tapped hole, matches with the screw thread of expand tube bolt, and the inner wall surface of enlarged diameter section is a non slip surface, match with the external diameter that is connected flexible pipe, in the gap of flexible pipe between this enlarged diameter section and expand tube bolt thread section; The endoporus of described connection nut alive is a shoulder hole, reduced diameter section is a unthreaded hole, sky is enclosed within on the external cylindrical surface of expand tube bolt thread section, the aperture is slightly larger than the external diameter of expand tube bolt thread section, enlarged diameter section is a tapped hole, match with the outside thread that is connected frock, instrument, the internal diameter of this tapped hole is slightly larger than the external diameter of expand tube bolt bolt head, and bolt head is positioned at this tapped hole.

2. hose coupling as claimed in claim 1, it is characterized in that: the thread section of described expand tube bolt is divided into two sections, two sections pitch is identical, and screw thread is continuous, one section by bolt head is the standard round male screw, match with the banded penstock nut thread, one section that leans on the bolt tail is the non-full V-thread of band tapering, and correspondence is connected the internal surface of flexible pipe.

3. hose coupling as claimed in claim 1 or 2 is characterized in that: the tail end of described expand tube bolt has cylindric smooth guide section, and the external diameter of this guiding section equals or is slightly larger than the internal diameter that is connected flexible pipe.

4. hose coupling as claimed in claim 1 is characterized in that: the endoporus of described expand tube bolt bolt head part is the regular hexagon hole.

5. hose coupling as claimed in claim 1 is characterized in that: there is a step seam end of described expand tube bolt bolt head, and " O " shape rubber seal is arranged on the seam.

6. hose coupling as claimed in claim 1 is characterized in that: the non slip surface of described banded penstock nut is screw thread non slip surface or annular knurl non slip surface.

7. hose coupling as claimed in claim 1 is characterized in that: the outer cylinder of described banded penstock nut has regular hexagon spanner position or anti-skidding line.

8. hose coupling as claimed in claim 1 is characterized in that: should there be tool withdrawal groove at the pretension connecting thread place of described connection nut alive.