CN201326845Y

CN201326845Y - Pipe connecting device of plate pressure type

Info

Publication number: CN201326845Y
Application number: CNU2008201994029U
Authority: CN
Inventors: 陈国强
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-03
Filing date: 2008-12-03
Publication date: 2009-10-14
Anticipated expiration: 2018-12-03

Abstract

The utility model belongs to the technical field of pipe connection, comprising a pipe, a middle button, a side plate, a sealing ring and a bolt. A circular bulge is arranged outwards close to the end of the pipe; the middle button is a hollow column; the middle part of the middle button is provided with a concave circular dent; the inside diameter of the circular dent is less than or equal to the inside diameter of the pipe; the side plate is in a ring form which is mutually perpendicular and five-fold and has three different inside diameters; a circular ring at the outside of the side plate is provided with evenly-arranged bolt installation holes along the axial direction; the sealing ring is arranged at the two sides of the circular dent of the middle button and on the pipe outside the circular bulge at the end of the two connected pipes; and the bolt is arranged inside the bolt installation holes on the two oppositely-arranged side plates in series and is screwed tightly for connection. The utility model has the advantages of reasonable structure, small internal stress, good sealing performance, raw material saving and convenient construction, and is especially applicable to the joint connecting device of various water pipes of high pressure, medium pressure or low pressure pipelines.

Description

Dish pressure type pipe joint

Technical field

The utility model belongs to tubing interconnection technique field, refers in particular to a kind of dish pressure type pipe joint.

Background technique

At present, be used for tubing, especially for height, in, the connecting means of the tubing that the various water deliverys of low pressure line are used has multiple, for example: connect with flange plate, be threaded, deformation method connection etc., utilize the Connection Step of flange plate to be, elder generation's cast flange dish, flange plate is welded on the end of tubing, the flange plate with two tubing couples together with bolt at last again, and the deficiency of this connecting means is: the one, and casting needs the waste great deal of raw materials, the 2nd, can produce pore in the cast member, in pore,, can cause the poor sealing of pipe fitting, even damage by electrochemical corrosion, the 3rd, casting, processing technology complexity such as welding, efficiency of construction is low; Utilization is threaded, for heavy caliber pipe, can be very difficult when rotation is tightened, and tightness also is difficult for grasping; Referring to Fig. 1-2: utilize deformation method to connect, be with connected tubing 1, during 2 mutual sockets, between upper and lower layers tubing, install seal ring 8 additional, with the internal and external layer tubing 1 of specific hydraulic pincers with the seal ring both sides, 4

multi-point partials

2,3,5,7 pressurizing and deformation, realize being located by connecting mutually, the deficiency of this connecting means is: the one, at multi-point

partial deformation place

2,3,5,7 can be because hard extruding, cause material crack, cause the sealing variation, the 2nd, be with a pair of semi-circular speciality material during extrusion-deformation less than hexagonal in forming after the alignment of tube outer diameter, with hydraulic tongs two-layer tubing is pushed by force, force the bigger tubing of connected external diameter 1, only can form two interspaces 6, when the pipe internal pressure is big during 4 distortion to two seam 9 places distortion, hydraulic pressure can outwards seep water by this gap 6, causes poor sealing.

Summary of the invention

The purpose of this utility model provide a kind of construction process simple, make things convenient for, save material, the dish pressure type pipe joint of favorable sealing property.

The purpose of this utility model is achieved in that dish pressure type pipe joint, and include: tubing: the close end at tubing outwards is provided with an annular protrusion; Middle button: be a hollow cylinder, the internal diameter of middle button is provided with recessed annular recess more than or equal to the external diameter of the annular protrusion of tubing at the middle part of middle button, and the internal diameter of annular recess is less than or equal to the internal diameter of tubing; Limit dish: be the annular solid with three different inner diameters of orthogonal five foldings, the cylindrical internal diameter at the thinnest place of limit dish is more than or equal to the external diameter of tubing, the internal diameter of the 3rd folding of the number from inside to outside of limit dish is more than or equal to the external diameter of middle button, on the cirque body of the 4th folding of the number from inside to outside of limit dish, be provided with circumferentially uniform bolt mounting holes vertically, the limit dish the thinnest place cylindrical body back, bolt mounting holes preceding be sheathed on the annular protrusion that is connected tubing respectively after; Seal ring: on the tubing outside the both sides of the annular recess of buckleing in being arranged on, the annular protrusion of connected two tubing ends; Bolt: the bolt mounting holes inward turning consolidation that string is located on two limit dishes arranging in opposite directions now connects, and the end of connected two tubing and middle button seal mutually by seal ring.

Above-mentioned seal ring is the O RunddichtringO.

Above-mentioned limit dish: the bolt mounting holes on each limit dish has three at least.

Turning point on above-mentioned tubing, middle button and the limit dish is rounding off.

Above-mentioned tubing, middle button and limit dish are made with stainless steel material.

The outstanding compared to existing technology advantage of the utility model is:

1, production technology of the present utility model is simple, saves material, and easy construction just need be enclosed within the limit dish earlier on the tubing, makes an annular protrusion at the close end of tubing with special tool again, can use common wrench to realize connecting fast;

2, of the present utility model rational in infrastructure, internal stress is little, good airproof performance, and it is adjustable to connect tightness, and the bolt that screws on the dish of limit can further strengthen the tightness that tubing connects;

3, reasonable in design of the present utility model, favorable sealing property, easy construction suits especially at the joint connection of the various water delivery tubing of high, medium and low voltage pipeline.

Description of drawings

Fig. 1 is the sectional view of one of Placement of background technique;

Fig. 2 is the tubing distortion situation enlarged diagram after tubing connects in the background technique;

Fig. 3 is a perspective exploded view of the present utility model;

Fig. 4 is the cross-sectional schematic of limit of the present utility model dish;

Fig. 5 is an assembling schematic representation of the present utility model.

Embodiment

With specific embodiment the utility model is further described below, referring to Fig. 3-5:

Dish pressure type pipe joint includes:

Tubing 1,4: the close end at

tubing

20,40 outwards is provided with an

annular protrusion

21,41;

Middle button 60: be a hollow cylinder, the internal diameter of middle button 60 is provided with recessed annular recess 61 more than or equal to the external diameter of the

annular protrusion

21,41 of

tubing

20,40 at the middle part of middle button 60, and the internal diameter of annular recess 61 is less than or equal to the internal diameter of

tubing

20,40;

Limit dish 10,50: be orthogonal five foldings 11,12,13,14,15 have three different inner diameters D1, D2, the annular solid of D3, limit dish 10, the cylindrical inside diameter D 3 at 50 the thinnest place is more than or equal to

tubing

20,40 outer diameter D 5, limit dish 10, the inside diameter D 2 of the 3rd folding 13 of 50 number from inside to outside is more than or equal to the external diameter of middle button 60, at limit dish 10, be provided with circumferentially uniform bolt mounting holes 16 vertically on the cirque body of the 4th folding 14 of 50 number from inside to outside,

limit dish

10,50 the thinnest place cylindrical body after, bolt mounting holes 16 is connected tubing 10 preceding being sheathed on respectively, 50 annular protrusion 21, after 41;

Seal ring 30,31: buckle in being arranged on the

tubing

20,40 outside the

annular protrusion

21,41 of the both sides of 60 annular recess 61, connected two

tubing

20,40 ends;

Bolt 70: the bolt mounting holes 16 inward turning consolidations that string is located on two

limit dishes

10,50 arranging in opposite directions now connect, and the end of connected two

tubing

20,40 and middle button 61 seal mutually by

seal ring

30,31.

Above-mentioned

seal ring

30,31 is the O RunddichtringO.

Above-mentioned limit dish 10,50: the bolt mounting holes 16 on each

limit dish

10,50 has three at least.

Turning point on above-mentioned

tubing

20,40, middle button 60 and the

limit dish

10,50 is rounding off.

Above-mentioned

tubing

20,40, middle button 60 and limit dish the 10, the 50th are made with stainless steel material.

The foregoing description only is one of preferred embodiment of the present utility model; be not to limit protection domain of the present utility model according to this; so: all equivalences of doing according to structure of the present utility model, shape, principle change, and all should be covered by within the protection domain of the present utility model.

Claims

1, dish pressure type pipe joint is characterized in that: include:

Tubing: the close end at tubing outwards is provided with an annular protrusion;

Middle button: be a hollow cylinder, the internal diameter of middle button is provided with recessed annular recess more than or equal to the external diameter of the annular protrusion of tubing at the middle part of middle button, and the internal diameter of annular recess is less than or equal to the internal diameter of tubing;

Limit dish: be the annular solid with three different inner diameters of orthogonal five foldings, the cylindrical internal diameter at the thinnest place of limit dish is more than or equal to the external diameter of tubing, the internal diameter of the 3rd folding of the number from inside to outside of limit dish is more than or equal to the external diameter of middle button, on the cirque body of the 4th folding of the number from inside to outside of limit dish, be provided with circumferentially uniform bolt mounting holes vertically, the limit dish the thinnest place cylindrical body back, bolt mounting holes preceding be sheathed on the annular protrusion that is connected tubing respectively after;

Seal ring: on the tubing outside the both sides of the annular recess of buckleing in being arranged on, the annular protrusion of connected two tubing ends;

Bolt: the bolt mounting holes inward turning consolidation that string is located on two limit dishes arranging in opposite directions now connects, and the end of connected two tubing and middle button seal mutually by seal ring.

2, dish pressure type pipe joint according to claim 1, it is characterized in that: described seal ring is the O RunddichtringO.

3, dish pressure type pipe joint according to claim 1 is characterized in that: described limit dish: the bolt mounting holes on each limit dish has three at least.

4, dish pressure type pipe joint according to claim 1 is characterized in that: the turning point on described tubing, middle button and the limit dish is rounding off.

5, dish pressure type pipe joint according to claim 1 is characterized in that: described tubing, middle button and limit dish are made with stainless steel material.