CN2388460Y - Elastic flange pipe - Google Patents

Abstract

The utility model relates to an elastic flange pipe which comprises a hollow pipe body 1 and a flange plate 3 arranged at the end of the pipe body 1, wherein, the connecting point of the flange plate 3 and the pipe body 1 is provided with an annular clamping groove 2. The inner diameter of the pipe body at the position of the clamping groove 2 is smaller than the size of the middle site of the pipe body 1. The pipe body 1 and the flange plate 3 are made of rubber. Because a hollow cylinder of the utility model, which is made of rubber serves as an elastic flange joint body of a pipe head to replace a rigid flange plate or a socket joint, the concentrated stress at the pipe joint can be eliminated because of the elastic deformation of the elastic body and the pipe joint can not leak. The utility model eliminates the concentrated stress at the pipe joint and has the characteristics of simple structure and safety.

Description

The elastic flange pipe

The utility model belongs to pipe joint, international Patent classificating number F16L 11/00, F16L23/00.

At present, the mode that all adopts flange plate bolt connection and socket joint filling to connect about the connection of metallic conduit, prestress pipe.In engineering practice, these two kinds of connecting modes all exist with a kind of fatal weakness, in case adjacent tubes is subjected to displacement, concentrate stress and generation crack formation seepage phenomenon the joint, to a large amount of directly buried type pipelines, seepage can often take place because of the sedimentation of ground is irregular particularly.A major reason that causes the pipeline seepage is their concentrated stress of digest and decompose joint effectively when the pipeline inhomogeneous deformation.

The purpose of this utility model provides a kind of concentrated stress of eliminating the pipe joint place, and is simple in structure, safe and reliable elastic flange pipe.

The purpose of this utility model is achieved in that a kind of elastic flange pipe, and it comprises the pipe shaft 1 of hollow, the flange plate 3 of pipe shaft 1 end, and flange plate 3 is provided with annular slot 2 with pipe shaft 1 connecting place, and draw-in groove 2 place's tube body diameters are less than pipe shaft 1 intermediate portion size; Pipe shaft 1 and flange plate 3 are made by rubber.Connecting bolt hole 4 is set on the flange plate 3.

Because the utility model adopts rubber to make the elastic flange connected body of the cylindrical body of hollow as tube head, substituting rigid flange dish or socket joint connects, and rubber have acid resistant alkali, ageing-resistant, have unrivaled elasticity of other materials and a mechanical strength preferably, be made into column or spherical, can bear the pressure of ton.Pipe joint place concentrated stress will be eliminated because of elastomeric resiliently deformable, and pipe joint just seepage can not occur.The utlity model has the concentrated stress of eliminating the pipe joint place, characteristics simple in structure, safe and reliable.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the side view of Fig. 1.

Among the figure, 1, pipe shaft, 2, draw-in groove, 3, flange plate, 4, bolt hole.

The elastic flange pipe comprises the pipe shaft 1 of hollow, the flange plate 3 of pipe shaft 1 end, and flange plate 3 is provided with annular slot 2 with pipe shaft 1 connecting place, and draw-in groove 2 place's tube body diameters are less than pipe shaft 1 intermediate portion size; Pipe shaft 1 and flange plate 3 are made by rubber.Connecting bolt hole 4 is set on the flange plate 3.Select for use rubber material type and pipeline pressure and embedding situation to determine elastic tube wall thickness according to the pipeline working medium; Coating rubber and other materials on mould are through high temperature vulcanized moulding.

Because the pipe joint place has adopted elastic coupling, concentrated stress dissipates because of elastomeric distortion, and the bigger distortion of pipeline can be born in the joint, thereby can prevent the seepage of pipeline.By the pipeline that flange plate and spigot and socket type connect, generally all be to main pipes such as water, oil, gas, take place to cause damage by water after the seepage.After adopting the elastic flange pipe to connect, can effectively prevent seepage, have effects such as tangible water saving, fuel-economizing, solar term.Reduced the maintenance expenses that the pipeline cracking causes simultaneously.

Manufacturing process is simple: actual fabrication only need adopt conventional production technology and mould to get final product, more new production process.

Method of construction is simple: the rubber flange plate 3 at its two ends, during construction the single metal flange plate is enclosed within the draw-in groove 2 of pipe shaft 1, and get final product with the bolt connection.Rubber flange plate 3 existing interconnect functions have seal action again.

The utility model is applicable to metal, plastics, gives the connection of the various tubing such as stress. Because various modified rubbers is strong Degree, extensibility, acid and alkali-resistance and anti-atmospheric performance are good, and made elastomer again applicable pipeline in various media makes With.

Claims (2)

1, a kind of elastic flange pipe, it is characterized in that it comprises the pipe shaft (1) of hollow, the flange plate (3) of pipe shaft (1) end, flange plate (3) is provided with annular slot (2) with pipe shaft (1) connecting place, and draw-in groove (2) is located tube body diameter less than pipe shaft (1) intermediate portion size; Pipe shaft (1) and flange plate (3) are made by rubber.

2,, it is characterized in that being provided with on the flange plate (3) connecting bolt hole (4) according to the described a kind of elastic flange pipe of claim 1.

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