CN201795197U

CN201795197U - Flange connecting structure for drainage pipes

Info

Publication number: CN201795197U
Application number: CN2010201468618U
Authority: CN
Inventors: 麦海东
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-31
Filing date: 2010-03-31
Publication date: 2011-04-13
Anticipated expiration: 2020-03-31

Abstract

A flange connecting structure for drainage pipes comprises two thin-wall stainless steel pipes which are mutually connected. Connecting ends of the two stainless steel pipes are respectively an inserting end and a socket end. The flange connecting structure is characterized in that the socket end is in a conical and open, a bottom flange is fixedly connected to the outer wall of the socket end, the end of the inserting end is inserted into the bottom of the socket end, a sealing ring is arranged between the outer pipe wall of the inserting end and the inner pipe wall of the socket end, a face flange is sleeved on the outer wall of the pipe at the inserting end, an inner frustum-shaped ring integrally arranged on the face flange is inserted into the gap between the two pipes and contacts with the sealing ring, and the face flange is connected with the inside of the bottom flange by the aid of a fastening part. The flange connecting structure solves the problems of limitations on field processing and hidden danger of weld corrosion, avoids danger caused by 'welding' operation with naked fire, reduces cost, is convenient in assembly and disassembly, and further can effectively prevent a series of problems caused by the gaps at the connecting position of pipes.

Description

Draining pipe flange formula linkage structure

Technical field

The present invention relates to the linkage structure of used in construction drainage pipe, especially refer to the flange-type linkage structure of thin-wall stainless steel.

Background technique

Traditional draining is that " flange-type " connects with having a kind of in thin-walled stainless steel tube, the pipe fitting Placement, its catenation principle is that employing is enclosed within the pipe ends that will be connected respectively with the flange plate that caliber is complementary, utilization electric welding or argon arc welding weld together flange and pipe end, again gasket seal is placed between two flanges and clamps, the utilization bolt with two flanges lockings to reach sealing purpose.Flange-type is connected with dismounting distinct advantages easy to maintenance, but traditional flange is welded to connect some deficiency of existence: 1, corrosion due to welding; It is to adopt welding equipment that flange and tube end are welded together that traditional flange-type connects; this field welding technology; according to the welding conditions requirement, need the ventilate body protection of weld seam inside could ensure weldquality, and this is to welding the basic measures of quality assurance.But, often because construction site does not possess the same tooling device of factory, add environment, condition restriction on the job site, many code requirements of installing are difficult to realize, therefore tend to cause occur " weld corrosion " problem, this technical problem is that expert institute worry also is insoluble problem in the row always.2, construction is restricted; " welding " technology belongs to work with torches, there is certain risk in it from security standpoint, at present, there are many building site not allow work with torches, particularly in the finishing stage, therefore the welding of stainless steel pipeline job site also is subjected to many occasion restrictions, does not allow to carry out at the construction field (site) weld job.3, cost is big; Traditional flange-type connects, its flange is to be selected to tradition feedwater steel flange standard, domestic water generally is to design with the 0.6-0.25Mpa pressure criteria with steel flange, it comprises that the thickness of flange, external diameter standard relative cost are bigger, therefore will feed water to be applied on the drainage pipe with flange and use, be the fact that " waste material " arranged really.

Summary of the invention

The present invention provides a kind of simple in structure in order to overcome above deficiency, draining easy to process pipe flange formula linkage structure.

For reaching above purpose, this draining that the utility model provides pipe flange formula linkage structure, comprise interconnective two thin-wall stainless steels, two Stainless Steel Tube connecting ends are respectively insertion end and female end, it is characterized in that: the tapered uncovered shape of female end, the fixedly connected end flange of female end outer wall, the insertion end end inserts in the female end bottom, be provided with seal ring between insertion end pipe outer wall and female end inner tube wall, other establishes the outer wall that the face flange is placed in the insertion end pipe fitting, the face flange is integrally formed with a taper platform inner ring, and taper platform inner ring inserts in the gap of two pipe fittings and with seal ring and contacts, and is connected by fastening piece in face flange and the end flange.Be connected the compressing seal ring with end flange by the face flange and reach two pipe fitting purpose of connecting.

The uncovered female end of taper comprises uncovered of pipe shaft, taper and the joint that connects successively, and end flange is fixedly connected on the outer wall of joint.

Fastening piece is a bolt, and end flange is provided with the internal thread that cooperates with bolt, need not nut during connection.

The utility model has solved on-the-spot processing and has been subjected to condition restriction, the problem that has weld corrosion hidden danger, the danger of also avoiding " welding " work with torches to cause, also remedied the expensive deficiency that adopts conventional flange, this linkage structure that the utility model provides, have easy accessibility, characteristics that cost is low, and this linkage structure can also prevent a series of problems that the slit because of the pipe fitting joint produces effectively.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the A portion enlarged view of Fig. 1.

Fig. 3 is the A portion of Fig. 1 state enlarged view when installing.

Embodiment

Also the utility model is described in further detail in conjunction with the accompanying drawings below will to use embodiment:

This draining pipe flange formula linkage structure, as shown in Figure 1 to Figure 3, comprise two thin-wall stainless steels, two Stainless Steel Tube connecting ends are respectively insertion end 10 and female end 20, among the figure as seen, female end 20 tapered uncovered shapes, comprise uncovered 22 of pipe shaft 21, the taper and the joint 23 that connect successively, the outer wall of joint 23 is fixedly connected with end flange 30, and end flange 30 belongs to the part of female end 10 pipe fittings, has processed when pipe fitting produces; Insertion end 10 ends insert in female end 20 bottoms, be provided with seal ring 40 between insertion end 10 pipe outer walls and female end 20 inner tube walls, other establishes the outer wall that face flange 50 is placed in insertion end 10 pipe fittings, face flange 50 is integrally formed with a taper platform inner ring 51, taper platform inner ring 51 inserts in the gap of two pipe fittings and with seal ring 40 and contacts, and is connected by fastening piece 60 in face flange 50 and the end flange 30.When face flange 50 was connected with end flange 30, seal ring 40 was subjected to 51 compressings of taper platform inner ring, slowly advances to the bottom along the slit of taper bellmouth, produced when seal ring 40 is pulled to utmost point position and expanded so that play sealing effect.The structure of the seal ring 40 here can be according to the structural design of bellmouth, works as the slit that can fill up in all directions when seal ring is pressed in slit in the bellmouth in the bellmouth when purpose is, not the water dead angle.Here used fastening piece 60 is bolts, and end flange 30 is provided with the internal thread that cooperates with bolt, and the screw that will pass the face flange by bolt is fixedly connected with end flange dough-kneading method orchid, need not nut.

During installation, spread an amount of lubricant oil at pipe fitting female end 20 inwalls earlier, purpose is more smooth and easyly to advance in the bellmouth slit when seal ring 40 is oppressed by taper platform inner ring 51; Flange 50 above insertion end 10 pipe fittings that will assemble the then cover, the length according to the bellmouth degree of depth on insertion end 10 pipes is drawn a spacing line, insertion end 10 pipe fittings is injected in the bellmouth till pipe is inserted to the greatest extent spacing line again; Seal ring 40 is inserted in the bellmouth slit, the taper platform inner ring 51 that is enclosed within the face flange 50 on insertion end 10 pipe fittings is compressed seal ring 40, put bolt behind the screw of correction end flange 30, face flange 50, with diagonal angle method difference lock bolt, in the process of bolt locking, check seal ring, revise if find to have to expose at once, if seal ring is correct, then, promptly arrive firmly effect of sealing with face flange and the locked closure of bottom surface flange.

Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, its framework form is flexible and changeable, can the subseries product.Just make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.

Claims

1. a draining is with pipe flange formula linkage structure, comprise interconnective two thin-wall stainless steels, two Stainless Steel Tube connecting ends are respectively insertion end and female end, it is characterized in that: the tapered uncovered shape of female end, the fixedly connected end flange of female end outer wall, the insertion end end inserts in the female end bottom, be provided with seal ring between insertion end pipe outer wall and female end inner tube wall, other establishes the outer wall that the face flange is placed in the insertion end pipe fitting, the face flange is integrally formed with a taper platform inner ring, taper platform inner ring inserts in the gap of two pipe fittings and with seal ring and contacts, and is connected by fastening piece in face flange and the end flange.

2. draining as claimed in claim 1 pipe flange formula linkage structure, it is characterized in that: the uncovered female end of described taper comprises uncovered of pipe shaft, taper and the joint that connects successively, and end flange is fixedly connected on the outer wall of joint.

3. draining as claimed in claim 1 pipe flange formula linkage structure, it is characterized in that: described fastening piece is a bolt.

4. draining as claimed in claim 4 pipe flange formula linkage structure, it is characterized in that: flange of the described end is provided with the internal thread that cooperates with bolt.