CN217441077U

CN217441077U - Self-sealing internal thread structure of copper pipe fitting

Info

Publication number: CN217441077U
Application number: CN202221440971.4U
Authority: CN
Inventors: 陈学平
Original assignee: Zhejiang Bozhan Sanitary Technology Co ltd
Current assignee: Zhejiang Bozhan Sanitary Technology Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-09-16
Anticipated expiration: 2032-06-09

Abstract

The utility model relates to a copper pipe fitting helicitic texture especially relates to a self sealss copper pipe fitting's inner screw thread structure. Including the pipe fitting body, pipe fitting body outer wall connection has rather than vertically standpipe, and be equipped with the inner tube with the axle center in the standpipe, simultaneously inner tube and pipe fitting body intercommunication, in addition, the outer wall of inner tube be equipped with be connected pipe fitting inner wall threaded connection's first screw thread, and be equipped with the clearance that is used for connecting the pipe fitting activity between the annular surface that the tip of first screw thread formed and the standpipe inner wall. Set up in the standpipe and form the clearance between inner tube and standpipe and the inner tube, the outer wall of inner tube is formed with the first screw thread of being connected with the pipe fitting cooperation simultaneously, and the pipe fitting of being connected carries out threaded connection after inserting the clearance and with the inner tube, through the route of oozing that increases liquid to reduce liquid and ooze, in order to reduce the corrosion effect to connecting the pipe fitting, increase copper pipe spare's life. The utility model discloses compare in the pipe fitting connected mode among the prior art, the leakproofness is better.

Description

Self-sealing internal thread structure of copper pipe fitting

Technical Field

The utility model relates to a copper pipe fitting helicitic texture especially relates to a self sealss copper pipe fitting's internal thread structure.

Background

The copper pipe fitting is used for water pipe switching department mostly, can set up a plurality of connections standpipe on the copper pipe fitting for with be connected pipe fitting threaded connection, connect the pipe fitting usually and use internal thread connection or external screw thread connection with connecting the standpipe, but can take place the liquid condition of oozing from threaded connection department, the phenomenon of rust and corrosion can appear in the threaded connection department of connecting the pipe fitting and being connected the standpipe in time to the life of copper pipe fitting has been reduced.

SUMMERY OF THE UTILITY MODEL

In view of this, for the not enough that exists among the optimization prior art, the utility model discloses a self sealss copper pipe fitting inner thread structure is now provided.

In order to achieve the above object, the utility model relates to a self sealss copper pipe fitting's internal thread structure, including the pipe fitting body, pipe fitting body outer wall is connected with rather than the vertically standpipe, and be equipped with the inner tube with the axle center in the standpipe, simultaneously inner tube and pipe fitting body intercommunication, in addition, the outer wall of inner tube is equipped with and is connected pipe fitting inner wall threaded connection's first screw thread, and is equipped with the clearance that is used for being connected the pipe fitting activity between the toroidal surface that the tip of first screw thread formed and the standpipe inner wall.

In the above-mentioned setting, set up in the standpipe and form the clearance between inner tube and standpipe and the inner tube, the outer wall of inner tube is formed with the first screw thread of being connected with the pipe fitting cooperation simultaneously, connects behind the pipe fitting insertion clearance and carries out threaded connection with the inner tube, through the route of oozing that increases liquid to reduce liquid and ooze, in order to reduce the corrosion effect to connecting the pipe fitting, increase copper pipe spare's life.

The utility model discloses compare in the pipe fitting connected mode among the prior art, the leakproofness is better.

Furthermore, the inner wall of the vertical pipe is provided with a second thread in threaded connection with the outer wall of the connecting pipe fitting, and the rotation direction of the second thread is the same as that of the first thread.

Wherein the first and second threads are triangular in cross-section.

Furthermore, the length of the first thread in the vertical direction is greater than or less than or equal to the length of the second thread in the vertical direction.

The thread teeth of the first thread and the second thread are arranged in the same specification, wherein the tooth height (D) of the thread teeth of the first thread and the second thread is 0.7-0.8 times of the thread pitch (P).

Wherein, each thread tooth comprises a bearing surface and a guide surface which is integrally formed with the bearing surface, the included angle alpha between the bearing surface and the perpendicular line of the axis of the thread tooth is 6-8 degrees, and the included angle beta between the guide surface and the perpendicular line of the axis of the thread tooth is 30-55 degrees.

Finally, the length of the inner tube is less than the length of the standpipe.

The utility model has the advantages that: the inner pipe in threaded connection with the connecting pipe fitting is additionally arranged in the vertical pipe to increase the seepage path of fluid, so that the effect of reducing liquid seepage is realized, the corrosion effect on the connecting pipe fitting is reduced, and the service life of the copper pipe fitting is prolonged; simultaneously the inner wall at the standpipe be provided with be connected pipe fitting outer wall threaded connection's screw thread, can further increase the route that oozes of liquid, further reduce liquid and ooze.

Drawings

Fig. 1 is a perspective view of a copper pipe.

Fig. 2 is a schematic diagram and a partial enlarged view of a cross-sectional exploded structure of a copper pipe fitting.

Fig. 3 is a sectional view of a threaded seal structure and an enlarged partial sectional view of a pipe connection.

FIG. 4 is a cross-sectional view of the thread teeth of the first and second threads.

Fig. 5 is a cross-sectional detailed sectional view of a thread tooth.

Reference numerals: a pipe body 10, a gap 11;

a standpipe 20, a second thread 21;

inner tube 30, first thread 31;

a connecting pipe member 40;

thread tooth 50, bearing surface 51 and guide surface 52.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The utility model relates to a self sealss copper pipe fitting's internal thread structure, this interconnect between the thread structure mainly used pipe fitting thereby realizes the effect of self sealss through screw-thread fit between each pipe fitting.

The embodiment of the utility model discloses a as follows, refer to fig. 1 to 3 and show, including pipe fitting body 10, pipe fitting body 10 outer wall connection has rather than vertically standpipe 20, and is equipped with inner tube 30 with the axle center in the standpipe 20, and inner tube 30 communicates with pipe fitting body 10 simultaneously, and in addition, the outer wall of inner tube 30 is equipped with and is connected the first screw thread 31 of 40 inner wall threaded connection of pipe fitting, and is equipped with the clearance 11 that is used for being connected the activity of pipe fitting 40 between the annular surface that the tip of first screw thread 31 formed and the 20 inner walls of standpipe.

In this embodiment, insert the connecting pipe fitting 40 in clearance 11 and rotate the connecting pipe fitting 40, the screw thread of this in-process connecting pipe fitting 40 inner wall is mutually supported with first screw thread 31 on the inner tube 30 and is carried out threaded connection, realizes the effect of self sealedly, through increasing the seepage route of liquid, reduces the corruption of liquid to the pipe fitting junction.

As an embodiment of the present invention, referring to fig. 2 to 3, the inner wall of the standpipe 20 is provided with a second thread 21 screwed with the outer wall of the connecting pipe 40, and the second thread 21 and the first thread 31 have the same thread rotation direction.

In this embodiment, the inside and the outer wall of the connecting pipe 40 are respectively in threaded connection with the standpipe 20 and the inner pipe 30, which not only can enhance the connection stability between the connecting pipe 40 and the copper pipe, but also can improve the sealing effect, increase the seepage path of liquid, and reduce the corrosion of the liquid to the pipe joint.

In the above embodiment, the first thread 31 and the second thread 21 have a triangular cross section.

In the above embodiment, the thread teeth 50 of the first thread 31 and the second thread 21 are of the same specification, wherein the tooth height d of the thread teeth 50 of the first thread 31 and the second thread 21 is 0.7 to 0.8 times the thread pitch p.

Each thread tooth 50 comprises a bearing surface 51 and a guide surface 52 integrally formed with the bearing surface 51, the bearing surface 51 forms an angle alpha of 6-8 degrees with the perpendicular to the axis of the thread tooth 50, and the guide surface 52 forms an angle beta of 30-55 degrees with the perpendicular to the axis of the thread tooth 50.

In the embodiment of the present invention, the length of the first thread 31 in the vertical direction is greater than or less than or equal to the length of the second thread 21 in the vertical direction.

In the above embodiment, the length of the inner tube 30 is less than or equal to or greater than the length of the standpipe 20.

In the above embodiment, the first thread 31 is located upward, and the second thread 21 is located downward; or the first thread 31 is arranged below the position and the second thread 21 is arranged above the position; or the first thread 31 is located in the same position as the second thread 21.

When the installation between actual pipe fitting, need match the screw thread of connecting pipe fitting 40 and standpipe 20 inner tube 30 in advance to realize self-sealing effect to can add the sealed pad in clearance 11, can further prevent oozing of liquid.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an internal thread structure of copper pipe fitting of self sealss, includes pipe fitting body (10), its characterized in that, pipe fitting body (10) outer wall connection have rather than vertically standpipe (20), and be equipped with inner tube (30) with the axle center in standpipe (20), simultaneously inner tube (30) and pipe fitting body (10) intercommunication, in addition, the outer wall of inner tube (30) be equipped with first screw thread (31) of being connected pipe fitting (40) inner wall threaded connection, and be equipped with between the annular surface that the tip of first screw thread (31) formed and standpipe (20) inner wall and be used for connecting clearance (11) of pipe fitting (40) activity.

2. The internal thread structure of a self-sealing copper pipe fitting according to claim 1, characterized in that the inner wall of the standpipe (20) is provided with a second thread (21) which is screwed with the outer wall of the connecting pipe fitting (40), and the second thread (21) has the same thread rotation direction as the first thread (31).

3. A self-sealing copper pipe fitting internal thread structure as claimed in claim 1 or 2, characterized in that said first thread (31) and second thread (21) are triangular in cross-section.

4. The internal thread structure of a self-sealing copper pipe fitting according to claim 1 or 2, characterized in that the length of the first thread (31) in the vertical direction is greater than or less than or equal to the length of the second thread (21) in the vertical direction.

5. The internal thread structure of a self-sealing copper pipe fitting according to claim 1 or 2, characterized in that the thread teeth (50) of the first thread (31) and the second thread (21) are of the same size, wherein the thread teeth (50) of the first thread (31) and the second thread (21) have a tooth height (d) of 0.7 to 0.8 times the thread pitch (p).

6. The internal thread structure of a self-sealing copper pipe fitting as claimed in claim 5, characterized in that each thread tooth (50) comprises a bearing surface (51) and a guide surface (52) formed integrally therewith, the bearing surface (51) being at an angle α of 6 ° to 8 ° to the perpendicular to the axis of the thread tooth (50), and the guide surface (52) being at an angle β of 30 ° to 55 ° to the perpendicular to the axis of the thread tooth (50).

7. The internal thread structure of a self-sealing copper pipe fitting according to claim 1, characterized in that the length of the internal pipe (30) is less than or greater than or equal to the length of the standpipe (20).