WO2018072564A1 - Pipe connection system - Google Patents

Pipe connection system Download PDF

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Publication number
WO2018072564A1
WO2018072564A1 PCT/CN2017/100247 CN2017100247W WO2018072564A1 WO 2018072564 A1 WO2018072564 A1 WO 2018072564A1 CN 2017100247 W CN2017100247 W CN 2017100247W WO 2018072564 A1 WO2018072564 A1 WO 2018072564A1
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Prior art keywords
pipe
male
female
aperture portion
sealing
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PCT/CN2017/100247
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French (fr)
Chinese (zh)
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曾广新
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings

Definitions

  • the invention relates to the field of hardware building materials, in particular to a connecting pipe system.
  • the connecting pipes in the field of hardware and building materials are connected by means of socket or threaded fitting, but the pipes in the field of building materials are mostly used as water pipes, and the inside thereof passes through liquid semi-liquid materials.
  • the pipe fittings in the prior art are prone to problems such as overflow of tap water due to the gap of the threads.
  • the pipeline needs to hold large particles or corrosive liquids, the liquid passing through the threads will cause corrosion or rust at the threads.
  • the invention provides a connecting pipe system, which solves the problem that the connecting pipe is easy to leak or the thread is vulnerable to the prior art.
  • the connecting pipe system comprises a male pipe and a female pipe, wherein the female pipe is internally provided with a stepped hole, and the stepped hole divides the female pipe into a large aperture portion and a small aperture portion, and the male pipe end is inserted into the Inside the large aperture portion of the female tube, the male tube and the female tube are sealed by a screw connection and a sealing structure, and the sealing structure has a closest distance to the thread A, wherein A>0 .
  • the male pipe is provided with an external thread on the outer wall
  • the outer wall of the male pipe is further provided with N mounting grooves surrounding the cross section of the male pipe, and the mounting groove is an annular closed structure and And disposed at an upper portion or/and a lower portion of the external thread, the female tube is provided with an internal thread corresponding to the external thread, wherein N ⁇ 1.
  • the mounting groove is sleeved with a sealing ring
  • the sealing ring has a circular cross section, a cross-sectional diameter D1, and the mounting groove depth H1, wherein D1>H1, the sealing ring and the large aperture portion are formed. Interference fit system.
  • the large aperture portion is obtained by reaming the end portion of the small aperture portion, and the transition between the large aperture portion and the small aperture portion is a circular slope.
  • the transition stage forms an angle a with the large aperture cross section, where 0° ⁇ ⁇ ⁇ 90°.
  • the male tube and the female tube are one of a PVC tube or a metal tube.
  • the male tube inner diameter D2 the small aperture portion inner diameter D3, wherein D2 ⁇ D3.
  • the large aperture portion is internally provided with a closed convex ring that cooperates with the sealing ring, and the inner diameter of the convex ring is larger than the outer diameter of the external thread when the male tube and the female tube are completely screwed together.
  • the convex ring abuts the sealing ring to increase the sealing strength.
  • the transition table is provided with a truncated cone seal. When the male tube and the female tube are tightened, the seal is caught by the male tube port for sealing.
  • the present invention provides a connecting pipe system comprising a male pipe and a female pipe, wherein the female pipe is internally provided with a stepped hole, and the stepped hole divides the female pipe into a large diameter portion and a small diameter hole
  • the male tube end is inserted into the large aperture portion of the female tube, and the male tube and the female tube are sealed by a screw connection and a sealing structure.
  • the sealing effect of the pipe is better by the structure of the thread and the sealing ring.
  • the connecting portion achieves the double sealing effect, and does not need Other redundant processes, while reducing the production process and improving production efficiency, did not reduce the quality of the workpiece, but greatly enhanced the quality of the pipe.
  • FIG. 1 is a schematic structural view of a first embodiment of the present invention
  • FIG. 2 is a schematic structural view of a male head pipe of Embodiment 1;
  • FIG. 3 is a schematic structural view of a female tube of Embodiment 1;
  • FIG. 4 is a schematic structural view of a connecting pipe of Embodiment 2;
  • Figure 5 is a schematic structural view of a sealing member in Embodiment 3.
  • Figure 6 is a structural view showing the structure of the sealing member in the third embodiment.
  • the connecting pipe system shown in FIG. 1 has a male pipe 1 and a female pipe 2, and the female pipe 2 is internally provided with a stepped hole, and the stepped hole divides the female pipe into a large aperture portion 21 and a small aperture portion 24, The end of the head pipe 1 is inserted into the inside of the large-aperture portion 21 of the female pipe 2.
  • the outer wall of the male pipe 1 is provided with an external thread 12, and the external thread 12 is disposed at the top end of the male pipe.
  • the outer wall of the male pipe 1 is further provided with two mounting grooves 11 surrounding the cross section of the male pipe 1.
  • the mounting groove 11 has a rectangular cross section, and the mounting groove 11 is an annular closed structure and is disposed at a lower portion of the external thread 12.
  • the female tube 2 is provided with an internal thread 22 corresponding to the external thread 12 at a corresponding position.
  • the sealing groove 3 is sleeved on the mounting groove 11, and the sealing ring 3 has a circular cross section with a cross-sectional diameter D1 and a mounting groove 11 depth H1, wherein D1>H1, and the sealing ring 3 forms an interference fit system with the large-diameter portion 21.
  • the large aperture portion 21 is obtained by reaming the end portion of the small aperture portion 24, and a transition table 23 is formed between the large aperture portion 21 and the small aperture portion 24, the transition stage 23 is an annular slope surface, and the transition stage 23 and the large aperture portion are formed.
  • the male pipe 1 and the female pipe 2 are PVC pipes.
  • the large aperture portion 21 is internally provided with a closed convex ring that cooperates with the sealing ring 3.
  • the inner diameter of the convex ring is larger than the outer diameter of the external thread 12.
  • the connecting pipe system shown in FIG. 4 has a male pipe 1 and a female pipe 2, and the female pipe 2 is internally provided with a stepped hole, and the stepped hole divides the female pipe into a large aperture portion 21 and a small aperture portion 24, The end of the head pipe 1 can be inserted into the inside of the large-pore portion 21 of the female pipe 2.
  • the connection between the male pipe 1 and the female pipe 2 is the same as that in the first embodiment.
  • the outer wall of the male pipe 1 is provided with an external thread 12, and the external thread 12 is disposed on the upper portion of the male pipe.
  • the outer wall of the male pipe 1 is further provided with four mounting grooves 11 surrounding the section of the male pipe 1, wherein the installation groove has a cross section of Rectangularly, the mounting groove 11 is an annular closed structure, and the two are respectively disposed at upper and lower portions of the external thread 12, and the female tube 2 is provided with an internal thread 22 matched with the external thread 12 at a corresponding position.
  • the sealing groove 3 is sleeved on the mounting groove 11, and the sealing ring 3 has a triangular cross section with a section height D1 and a mounting groove 11 depth H1, wherein D1>H1, and the sealing ring 3 forms an interference fit system with the large aperture portion 21.
  • the diameter of the circular outer edge of the sealing ring of the socket is smaller than the diameter of the outer wall of the large diameter of the female tube.
  • the large aperture portion 21 is obtained by reaming the end portion of the small aperture portion 24, and a transition table 23 is formed between the large aperture portion 21 and the small aperture portion 24, the transition stage 23 is an annular slope surface, and the transition stage 23 and the large aperture portion are formed.
  • the male pipe 1 and the female pipe 2 are stainless steel pipes or other metal pipes.
  • the large aperture portion 21 is internally provided with a closed convex ring that cooperates with the sealing ring 3.
  • the inner diameter of the convex ring is larger than the outer diameter of the external thread 12.
  • the connecting pipe system in Embodiment 1 is preferably provided with a truncated cone-shaped sealing member 4 in the transition table 23, and the sealing member when the male pipe (1) and the female pipe (2) are tightened 4
  • the port of the male tube (1) is stuck, and the distance between the truncated cone seal 4 and the internal thread 22 and the external thread 12 is greater than zero.
  • the structure of the sealing member 4 is also applicable to the embodiment 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Abstract

A pipe connection system, comprising a male pipe connector (1) and a female pipe connector (2). The female pipe connector (2) is internally provided with a stepped bore. The stepped bore divides the female pipe connector into a large diameter bore portion (21) and a small diameter bore portion (24). An end portion of the male pipe connector (1) is connected to the large diameter bore portion (21) of the female pipe connector (2) by insertion. The male pipe connector (1) and the female pipe connector (2) are threadedly connected and sealed by means of a sealing structure. The pipe connection system uses a screw thread and sealing ring (3) structure to enhance the sealing effect of a pipe component. After expanding the bore of the female pipe connector (2), an inner thread and outer thread can be engaged and reinforced using a sealing ring (3) to achieve double sealing of a connected portion. The invention requires no additional technique, shortens operating processes, and improves device quality and production efficiency.

Description

连接管体系Connecting pipe system 技术领域Technical field

本发明涉及五金建材领域，特别是指一种连接管体系。The invention relates to the field of hardware building materials, in particular to a connecting pipe system.

背景技术Background technique

一般五金建材领域的连接管都是通过套接或者螺纹配合的形式相连接的，但建材领域的管类大是作为水管使用，其内部会通过液态半液态物质。现有技术中的管件容易因为螺纹的间隙导致自来水外溢等问题。当管路需要承装大颗粒或者腐蚀性液体时，液体经过螺纹处会导致螺纹处的腐蚀或者锈化。In general, the connecting pipes in the field of hardware and building materials are connected by means of socket or threaded fitting, but the pipes in the field of building materials are mostly used as water pipes, and the inside thereof passes through liquid semi-liquid materials. The pipe fittings in the prior art are prone to problems such as overflow of tap water due to the gap of the threads. When the pipeline needs to hold large particles or corrosive liquids, the liquid passing through the threads will cause corrosion or rust at the threads.

发明内容Summary of the invention

本发明提出一种连接管体系，解决了现有技术中连接管容易泄露或者螺纹处易受侵害的问题。The invention provides a connecting pipe system, which solves the problem that the connecting pipe is easy to leak or the thread is vulnerable to the prior art.

本发明的技术方案是这样实现的：The technical solution of the present invention is implemented as follows:

连接管体系，包括公头管和母头管，所述母头管内部设有台阶孔，台阶孔将母头管分为大孔径部和小孔径部，所述公头管端部插接于所述母头管的大孔径部内部，所述公头管与所述母头管之间通过螺纹连接及密封结构加以密封，所述密封结构与所述螺纹最近距离为A，其中A＞0。The connecting pipe system comprises a male pipe and a female pipe, wherein the female pipe is internally provided with a stepped hole, and the stepped hole divides the female pipe into a large aperture portion and a small aperture portion, and the male pipe end is inserted into the Inside the large aperture portion of the female tube, the male tube and the female tube are sealed by a screw connection and a sealing structure, and the sealing structure has a closest distance to the thread A, wherein A>0 .

作为本发明的优选方案，所述公头管外壁上设有外螺纹，所述公头管外壁上还设有N个环绕于公头管截面的安装槽，所述安装槽为环形封闭结构且设于所述外螺纹的上部或/和下部，所述母头管相应位置设有与外螺纹相配合的内螺纹，其中N≥1。As a preferred embodiment of the present invention, the male pipe is provided with an external thread on the outer wall, and the outer wall of the male pipe is further provided with N mounting grooves surrounding the cross section of the male pipe, and the mounting groove is an annular closed structure and And disposed at an upper portion or/and a lower portion of the external thread, the female tube is provided with an internal thread corresponding to the external thread, wherein N≥1.

作为本发明的优选方案，所述安装槽上套有密封圈，所述密封圈截面为圆形，其截面直径D1，所述安装槽深度H1，其中D1＞H1，密封圈与大孔径部形成过盈配合体系。 As a preferred embodiment of the present invention, the mounting groove is sleeved with a sealing ring, the sealing ring has a circular cross section, a cross-sectional diameter D1, and the mounting groove depth H1, wherein D1>H1, the sealing ring and the large aperture portion are formed. Interference fit system.

作为本发明的优选方案，所述大孔径部通过将小孔径部的端部经过扩孔得到，所述大孔径部与小孔径部之间为一过渡台，所述过渡台为环形坡面，所述过渡台与大孔径横截面形成角度α，其中0°≤α＜90°。In a preferred embodiment of the present invention, the large aperture portion is obtained by reaming the end portion of the small aperture portion, and the transition between the large aperture portion and the small aperture portion is a circular slope. The transition stage forms an angle a with the large aperture cross section, where 0° ≤ α < 90°.

作为本发明的优选方案，所述公头管与母头管为PVC管或者金属管中的一种。As a preferred embodiment of the present invention, the male tube and the female tube are one of a PVC tube or a metal tube.

作为本发明的优选方案，所述公头管内径D2，所述小孔径部内径D3，其中D2≥D3。As a preferred embodiment of the present invention, the male tube inner diameter D2, the small aperture portion inner diameter D3, wherein D2 ≥ D3.

作为本发明的优选方案，所述大孔径部内部设有与密封圈相配合的封闭凸环，所述凸环内径大于所述外螺纹外径，当公头管与母头管旋合完全时，所述凸环与所述密封圈贴靠来增加密封强度。As a preferred embodiment of the present invention, the large aperture portion is internally provided with a closed convex ring that cooperates with the sealing ring, and the inner diameter of the convex ring is larger than the outer diameter of the external thread when the male tube and the female tube are completely screwed together. The convex ring abuts the sealing ring to increase the sealing strength.

过渡台内设有圆锥台形密封件，公头管与母头管拧紧时，密封件卡住公头管端口进行密封。The transition table is provided with a truncated cone seal. When the male tube and the female tube are tightened, the seal is caught by the male tube port for sealing.

本发明的有益效果：本发明提出了一种连接管体系，包括公头管和母头管，所述母头管内部设有台阶孔，台阶孔将母头管分为大孔径部和小孔径部，所述公头管端部插接于所述母头管的大孔径部内部，所述公头管与所述母头管之间通过螺纹连接及密封结构加以密封。通过螺纹和密封圈的结构，使管件密封效果更好，本发明将母头管进行扩孔后，通过内外螺纹配合，并加上密封圈的加固，使连接部达到双重密封的效果，不需要其他多余工艺，在减少了制作环节，提高了生产效率的同时，并没有降低工件的质量，反而使管件质量大大增强。Advantageous Effects of the Invention: The present invention provides a connecting pipe system comprising a male pipe and a female pipe, wherein the female pipe is internally provided with a stepped hole, and the stepped hole divides the female pipe into a large diameter portion and a small diameter hole The male tube end is inserted into the large aperture portion of the female tube, and the male tube and the female tube are sealed by a screw connection and a sealing structure. The sealing effect of the pipe is better by the structure of the thread and the sealing ring. After the female pipe is reamed, the inner and outer threads are matched, and the sealing ring is reinforced, so that the connecting portion achieves the double sealing effect, and does not need Other redundant processes, while reducing the production process and improving production efficiency, did not reduce the quality of the workpiece, but greatly enhanced the quality of the pipe.

附图说明DRAWINGS

为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

图1为本发明实施例1配合结构示意图；1 is a schematic structural view of a first embodiment of the present invention;

图2为实施例1公头管结构示意图； 2 is a schematic structural view of a male head pipe of Embodiment 1;

图3为实施例1母头管结构示意图；3 is a schematic structural view of a female tube of Embodiment 1;

图4为实施例2连接管结构示意图；4 is a schematic structural view of a connecting pipe of Embodiment 2;

图5为实施例3中密封件结构示意图；Figure 5 is a schematic structural view of a sealing member in Embodiment 3;

图6为实施例3中密封件结构改进图。Figure 6 is a structural view showing the structure of the sealing member in the third embodiment.

图中，公头管1，安装槽11，外螺纹12，母头管2，大孔径部21，内螺纹22，过渡台23，小孔径部24，密封圈3，密封件4。In the drawing, the male pipe 1, the mounting groove 11, the external thread 12, the female pipe 2, the large-aperture portion 21, the internal thread 22, the transition table 23, the small-aperture portion 24, the seal ring 3, and the seal member 4.

具体实施方式detailed description

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

实施例1Example 1

如图1所示的连接管体系，具有公头管1和母头管2，母头管2内部设有台阶孔，台阶孔将母头管分为大孔径部21和小孔径部24，公头管1端部插接于母头管2的大孔径部21内部。The connecting pipe system shown in FIG. 1 has a male pipe 1 and a female pipe 2, and the female pipe 2 is internally provided with a stepped hole, and the stepped hole divides the female pipe into a large aperture portion 21 and a small aperture portion 24, The end of the head pipe 1 is inserted into the inside of the large-aperture portion 21 of the female pipe 2.

如图2所述公头管1外壁上设有外螺纹12，外螺纹12设于公头管顶端，公头管1外壁上还设有2个环绕于公头管1截面的安装槽11，其中安装槽截面为矩形，安装槽11为环形封闭结构且设于外螺纹12的下部，如图3所示，母头管2相应位置设有与外螺纹12相配合的内螺纹22。As shown in FIG. 2, the outer wall of the male pipe 1 is provided with an external thread 12, and the external thread 12 is disposed at the top end of the male pipe. The outer wall of the male pipe 1 is further provided with two mounting grooves 11 surrounding the cross section of the male pipe 1. The mounting groove 11 has a rectangular cross section, and the mounting groove 11 is an annular closed structure and is disposed at a lower portion of the external thread 12. As shown in FIG. 3, the female tube 2 is provided with an internal thread 22 corresponding to the external thread 12 at a corresponding position.

安装槽11上套有密封圈3，密封圈3截面为圆形，其截面直径D1，安装槽11深度H1，其中D1＞H1，密封圈3与大孔径部21形成过盈配合体系。The sealing groove 3 is sleeved on the mounting groove 11, and the sealing ring 3 has a circular cross section with a cross-sectional diameter D1 and a mounting groove 11 depth H1, wherein D1>H1, and the sealing ring 3 forms an interference fit system with the large-diameter portion 21.

大孔径部21通过将小孔径部24的端部经过扩孔得到，大孔径部21与小孔径部24之间为一过渡台23，过渡台23为环形坡面，过渡台23与大孔径部22的横截面形成角度α，其中α＝45°。The large aperture portion 21 is obtained by reaming the end portion of the small aperture portion 24, and a transition table 23 is formed between the large aperture portion 21 and the small aperture portion 24, the transition stage 23 is an annular slope surface, and the transition stage 23 and the large aperture portion are formed. The cross section of 22 forms an angle a, where a = 45°.

公头管1与母头管2为PVC管。The male pipe 1 and the female pipe 2 are PVC pipes.

公头管1的内径D2，小孔径部24的内径D3，其中D2≥D3。 The inner diameter D2 of the male pipe 1 and the inner diameter D3 of the small diameter portion 24, where D2 ≥ D3.

大孔径部21内部设有与密封圈3相配合的封闭凸环，凸环内径大于外螺纹12的外径，当公头管1与母头管2旋合完全时，凸环与密封圈3贴靠来增加密封强度。The large aperture portion 21 is internally provided with a closed convex ring that cooperates with the sealing ring 3. The inner diameter of the convex ring is larger than the outer diameter of the external thread 12. When the male tube 1 and the female tube 2 are completely screwed, the convex ring and the sealing ring 3 are Adhere to increase the seal strength.

实施例2Example 2

如图4所示的连接管体系，具有公头管1和母头管2，母头管2内部设有台阶孔，台阶孔将母头管分为大孔径部21和小孔径部24，公头管1端部可插接于母头管2的大孔径部21内部。其中公头管1和母头管2的连接方式与实施例1中的相同。The connecting pipe system shown in FIG. 4 has a male pipe 1 and a female pipe 2, and the female pipe 2 is internally provided with a stepped hole, and the stepped hole divides the female pipe into a large aperture portion 21 and a small aperture portion 24, The end of the head pipe 1 can be inserted into the inside of the large-pore portion 21 of the female pipe 2. The connection between the male pipe 1 and the female pipe 2 is the same as that in the first embodiment.

公头管1外壁上设有外螺纹12，外螺纹12设于公头管上部，公头管1外壁上还设有4个环绕于公头管1截面的安装槽11，其中安装槽截面为矩形，安装槽11为环形封闭结构，两两分别设于外螺纹12的上部和下部，母头管2相应位置设有与外螺纹12相配合的内螺纹22。The outer wall of the male pipe 1 is provided with an external thread 12, and the external thread 12 is disposed on the upper portion of the male pipe. The outer wall of the male pipe 1 is further provided with four mounting grooves 11 surrounding the section of the male pipe 1, wherein the installation groove has a cross section of Rectangularly, the mounting groove 11 is an annular closed structure, and the two are respectively disposed at upper and lower portions of the external thread 12, and the female tube 2 is provided with an internal thread 22 matched with the external thread 12 at a corresponding position.

安装槽11上套有密封圈3，密封圈3截面为三角形，其截面高度D1，安装槽11深度H1，其中D1＞H1，密封圈3与大孔径部21形成过盈配合体系。套接号的密封圈圆形外沿直径小于母管大孔径部外壁直径。The sealing groove 3 is sleeved on the mounting groove 11, and the sealing ring 3 has a triangular cross section with a section height D1 and a mounting groove 11 depth H1, wherein D1>H1, and the sealing ring 3 forms an interference fit system with the large aperture portion 21. The diameter of the circular outer edge of the sealing ring of the socket is smaller than the diameter of the outer wall of the large diameter of the female tube.

大孔径部21通过将小孔径部24的端部经过扩孔得到，大孔径部21与小孔径部24之间为一过渡台23，过渡台23为环形坡面，过渡台23与大孔径部22横截面形成角度α，其中α＝30°。The large aperture portion 21 is obtained by reaming the end portion of the small aperture portion 24, and a transition table 23 is formed between the large aperture portion 21 and the small aperture portion 24, the transition stage 23 is an annular slope surface, and the transition stage 23 and the large aperture portion are formed. The 22 cross section forms an angle α, where α = 30°.

公头管1与母头管2为不锈钢管或其它金属管。The male pipe 1 and the female pipe 2 are stainless steel pipes or other metal pipes.

公头管1的内径D2，小孔径部24的内径D3，其中D2≥D3。The inner diameter D2 of the male pipe 1 and the inner diameter D3 of the small diameter portion 24, where D2 ≥ D3.

大孔径部21内部设有与密封圈3相配合的封闭凸环，凸环内径大于外螺纹12的外径，当公头管1与母头管2旋合完全时，凸环与密封圈3贴靠来增加密封强度。其水管尺寸符合国家标准。The large aperture portion 21 is internally provided with a closed convex ring that cooperates with the sealing ring 3. The inner diameter of the convex ring is larger than the outer diameter of the external thread 12. When the male tube 1 and the female tube 2 are completely screwed, the convex ring and the sealing ring 3 are Adhere to increase the seal strength. The water pipe size conforms to national standards.

实施例3Example 3

如实施例1中的连接管体系，见图5或6所示，其中过渡台23内优选设有圆锥台形密封件4，公头管(1)与母头管(2)拧紧时，密封件4卡住公头管(1)端口进行密封，其中，圆锥台形密封件4与内螺纹22及外螺纹12的距离均大于0。显然密封件4的结构也适用于实施例2中。 As shown in FIG. 5 or 6, the connecting pipe system in Embodiment 1 is preferably provided with a truncated cone-shaped sealing member 4 in the transition table 23, and the sealing member when the male pipe (1) and the female pipe (2) are tightened 4 The port of the male tube (1) is stuck, and the distance between the truncated cone seal 4 and the internal thread 22 and the external thread 12 is greater than zero. It is obvious that the structure of the sealing member 4 is also applicable to the embodiment 2.

以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

Claims (8)

连接管体系，包括公头管(1)和母头管(2)，其特征在于，所述母头管(2)内部设有台阶孔，台阶孔将母头管分为大孔径部(21)和小孔径部(24)，所述公头管(1)端部插接于所述母头管(2)的大孔径部(21)内部，所述公头管(1)与所述母头管(2)之间通过螺纹连接并通过密封结构加以密封，所述密封结构与所述螺纹最近距离为A，其中A＞0。The connecting pipe system comprises a male pipe (1) and a female pipe (2), wherein the female pipe (2) is internally provided with a stepped hole, and the stepped hole divides the female pipe into a large diameter portion (21) And a small aperture portion (24), the end of the male tube (1) is inserted into the large aperture portion (21) of the female tube (2), the male tube (1) and the The female tubes (2) are screwed together and sealed by a sealing structure having a closest distance to the threads of A, where A &gt; 根据权利要求1所述的连接管体系，其特征在于，所述公头管(1)外壁上设有外螺纹(12)，所述公头管(1)外壁上还设有N个环绕于公头管(1)截面的安装槽(11)，所述安装槽(11)为环形封闭结构且设于所述外螺纹(12)的上部或/和下部，所述母头管(2)相应位置设有与外螺纹(12)相配合的内螺纹(22)，其中N≥1。The connecting pipe system according to claim 1, characterized in that the outer wall of the male pipe (1) is provided with an external thread (12), and the outer wall of the male pipe (1) is further provided with N surrounding a mounting groove (11) of a cross section of the male pipe (1), the mounting groove (11) is an annular closed structure and is disposed at an upper portion or/and a lower portion of the external thread (12), the female pipe (2) The corresponding position is provided with an internal thread (22) that cooperates with the external thread (12), where N ≥ 1. 根据权利要求2所述的连接管体系，其特征在于，所述安装槽(11)上套有密封圈(3)，所述密封圈(3)截面为圆形或三角形，其截面直径为D1，所述安装槽(11)深度为H1，其中D1＞H1，密封圈(3)与大孔径部(21)形成过盈配合体系。The connecting pipe system according to claim 2, wherein the mounting groove (11) is sleeved with a sealing ring (3), the sealing ring (3) having a circular or triangular cross section and a cross-sectional diameter D1 The mounting groove (11) has a depth of H1, wherein D1>H1, and the sealing ring (3) forms an interference fit system with the large aperture portion (21). 根据权利要求1所述的连接管体系，其特征在于，所述大孔径部(21)通过将小孔径部(24)的端部经过扩孔得到，所述大孔径部(21)与小孔径部(24)之间为一过渡台(23)，所述过渡台为环形坡面，所述过渡台与大孔径部(22)横截面形成角度α，其中0°≤α＜90°。The connecting pipe system according to claim 1, wherein the large-aperture portion (21) is obtained by reaming an end portion of the small-aperture portion (24), the large-aperture portion (21) and a small aperture Between the portions (24) is a transition table (23) which is an annular slope which forms an angle α with the cross section of the large aperture portion (22), wherein 0° ≤ α < 90°. 根据权利要求1所述的连接管体系，其特征在于，所述公头管(1)与母头管(2)为PVC管或者金属管中的一种。The connecting pipe system according to claim 1, characterized in that the male pipe (1) and the female pipe (2) are one of a PVC pipe or a metal pipe. 根据权利要求1所述的连接管体系，其特征在于，所述公头管内径D2，所述小孔径部内径D3，其中D2≥D3。The connector system according to claim 1, wherein said male tube has an inner diameter D2 and said small aperture portion has an inner diameter D3, wherein D2 ≥ D3. 根据权利要求3所述的连接管体系，其特征在于，所述大孔径部(21)内部设有与密封圈(3)相配合的封闭凸环，所述凸环的内径大于所述外螺纹(12)的外径，当公头管(1)与母头管(2)旋合完全时，所述凸环与所述密封圈(3)贴靠来增加密封强度。 The connecting pipe system according to claim 3, wherein the large-diameter portion (21) is internally provided with a closed convex ring that cooperates with the sealing ring (3), and the inner diameter of the convex ring is larger than the external thread The outer diameter of (12), when the male tube (1) and the female tube (2) are completely screwed together, the convex ring abuts against the sealing ring (3) to increase the sealing strength. 根据权利要求4所述的连接管体系，其特征在于，所述过渡台(23)内设有圆锥台形密封件(4)，公头管(1)与母头管(2)拧紧时，密封件(4)卡住公头管(1)端口进行密封。 The connecting pipe system according to claim 4, characterized in that the transition table (23) is provided with a truncated cone-shaped sealing member (4), and the male pipe (1) and the female pipe (2) are sealed when they are tightened. Piece (4) jams the male tube (1) port for sealing.
PCT/CN2017/100247 2016-10-18 2017-09-01 Pipe connection system Ceased WO2018072564A1 (en)

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