CN2562027Y

CN2562027Y - Pipeline connector

Info

Publication number: CN2562027Y
Application number: CN 02271453
Authority: CN
Inventors: 邱垂亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-29
Filing date: 2002-06-29
Publication date: 2003-07-23
Anticipated expiration: 2012-06-29

Abstract

The utility model relates to a pipe connector, which comprises a plastic connector body with female thread; a stainless steel protection layer is provided on the outer surface of the joint body; a ring convex step is provided at the end of the female thread on the connector body; the end face of the ring convex step close to the female thread is in an end-cutting scalene cone shape; the cone angle of the scalene cone is between 130 to 170 degree and preferably between 145 to 155 degree. The pipe connector has high intensity and good anticorrosion performance, and no soft filler is needed to pad when connected with the thread of metal pipes. The utility is convenient to operate, high in sealing performance, and effective in preventing the cross section at the end of metal pipes from corrosion.

Description

Pipe joint

Technical field

The utility model relates to a kind of link that is used for pipeline.

Background technique

The existing link that is used for metallic conduit, in order to have intensity and the corrosion resistance that is complementary with pipeline itself, generally also adopt the pure metal material to make, when metallic conduit and above-mentioned link screw thread spin, internal and external threads is because there is the gap in the size fit tolerance, must fill up filler such as the numb suede or the mackintosh etc. of last layer softness,, have following shortcoming like this: 1, construction trouble to improve the sealability of joint; 2, soft packing may be shredded or cause distortion by screw thread in pipeline or link rotary course, makes the sealability of joint can not get guaranteeing, must could check by pressure testing through repeatedly doing over again sometimes; 3, soft packing can be rotted in use for some time gradually, and the joint sealing performance is reduced, and can contaminated stream through the fluid of pipeline such as domestic water etc.4, the cross sections face of metallic conduit end is difficult to take effective rust preventing owing to be to cut at the construction field (site), makes this position that corrosion take place easily, pollutes domestic water.

The purpose of this utility model is to overcome above-mentioned shortcoming and a kind of intensity height, pipe joint that corrosion resistance is good is provided, when it and metallic conduit screw thread spin, must not fill up soft packing, easy to operate, and good seal performance, and can effectively prevent the corrosion of the terminal cross sections face of metallic conduit.

Its purpose can realize by following scheme: this pipe joint comprises tapped link body; its main feature is; described link body adopts plastics to make; also be provided with stainless protection layer at the joint body outer surface, the female ends place on the link body is provided with the prominent rank of annular.

Realization above-mentioned purpose scheme preferably is: the prominent rank of described annular are the butt tilted conical surface near the end surface shape of internal thread, and the cone angle of this tilted conical surface is preferably 145 °～155 ° between 130 °～170 °.

Realize that the better scheme of above-mentioned purpose is: described plastics are Reinforced Nylon or PVC.

The utlity model has following advantage and effect:

1, after the outside thread of the internal thread of plastic fastening body and metallic conduit screws, the prominent rank of the plastics at link female ends place end face can fit tightly with pipe end cross sections face, can erect the first line of defence that prevents that fluid from leaking like this; And the external thread rotary of the internal thread of plastic fastening body and metallic conduit is fashionable, the plastics internal thread can produce big plasticity or resiliently deformable, make internal and external threads more identical, so just erect the defence line, second road that prevents that fluid from leaking, make the sealability of this joint area reach requirement, need not use flexible fillers such as mackintosh, not only attended operation is convenient, and can keep the good seal performance of joint for a long time, avoided simultaneously because of the rot pollution problem that produces of soft packing.

2, stainless protection layer can play the protective action of anti-aging, resistance to deformation to whole link, makes link be fit to be embedded in underground or secretly applies in Architecture Design inside.

3, pipe joint of the present utility model adopts stainless steel and plastics to make, and does not have the problem of the easy corrosion of pipe joint of conventional carbon steel work.

4, prominent rank end face of link and pipe end cross sections face fit tightly, and can play a protective role to pipe end cross sections face, prevent that it from getting rusty because of long-term contact current.

5, the rank of will dashing forward are made as the butt tilted conical surface near the end face (i.e. the end face that contacts with pipe end cross sections face) of internal thread, can make that the prominent rank of plastics end face is easier to be out of shape because of the pressure that is subjected to the terminal cross sections face of metallic conduit, make between two landscape surfaces when fitting the gap littler, further strengthen sealing effect.

6, as long as firmly metallic conduit and link are screwed, prominent rank end face and metallic conduit end cut sides are fitted tightly and reach seal request, the sealability of joint can be screwed with strength and reliably be guaranteed by the operator like this, generally must not require to do over again because of sealing effect reaches, problem such as frangible or became uneven be difficult to be held by the operator problem of sealability because of soft packing to have overcome the traditional jointing structure.

7, pipe joint cost of the present utility model is significantly less than the pipe joint that pure stainless steel is made, and preparation process is simple.

Description of drawings

Fig. 1 is the cross-sectional view of a kind of embodiment of the utility model.

Fig. 2 is the prominent rank shape schematic representation of embodiment shown in Figure 1.

Fig. 3 is the cross-sectional view of second kind of embodiment of the utility model.

Fig. 4 is the cross-sectional view of the third embodiment of the utility model.

Embodiment

Fig. 1, pipe joint shown in Figure 2 comprise the link body 2 of being with internal thread 1, link body 2 adopts Reinforced Nylon to make, also be provided with stainless protection layer 4 at the joint body outer surface, be provided with the prominent rank 3 of annular at the female ends place of joint body, the prominent rank 3 of described annular are the butt tilted conical surface near the end surface shape of internal thread, and the cone angle of this tilted conical surface is 150 °; Prominent rank end face width b equals the wall thickness of the pipeline that will connect.

Pipe joint shown in Figure 3 is a three-way connector; the link body 2 of this three-way connector is made by PVC; also be provided with stainless protection layer 4 at the joint body outer surface; be provided with the prominent rank 3 of annular in internal thread 1 tail end of joint body; the prominent rank 3 of annular are the butt tilted conical surface near the end surface shape of internal thread, and the cone angle of this tilted conical surface is 170 °.

Pipe joint shown in Figure 4 is 90 ° of elbow links; the link body 2 of this link is made by reinforced plastic; also be provided with stainless protection layer 4 at the joint body outer surface; be provided with the prominent rank 3 of annular in internal thread 1 tail end of joint body; the prominent rank of annular are the butt tilted conical surface near the end surface shape of internal thread, and the cone angle of this tilted conical surface is 135 °.

Claims

1, a kind of pipe joint comprises tapped link body, it is characterized in that: described link body adopts plastics to make, and also is provided with stainless protection layer at the joint body outer surface, and the female ends place on the link body is provided with the prominent rank of annular.

2, according to the pipe joint of claim 1, it is characterized in that: the prominent rank of described annular are the butt tilted conical surface near the end surface shape of internal thread, and the cone angle of this tilted conical surface is preferably 145 °～155 ° between 130 °～170 °:

3, according to the pipe joint of claim 1 or 2, it is characterized in that: described plastics are Reinforced Nylon.

4, according to the pipe joint of claim 1 or 2, it is characterized in that: described plastics are PVC.