WO2020073188A1 - 一种用于卡压式管件的防脱出钢圈及固定密封装置 - Google Patents

一种用于卡压式管件的防脱出钢圈及固定密封装置 Download PDF

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Publication number
WO2020073188A1
WO2020073188A1 PCT/CN2018/109419 CN2018109419W WO2020073188A1 WO 2020073188 A1 WO2020073188 A1 WO 2020073188A1 CN 2018109419 W CN2018109419 W CN 2018109419W WO 2020073188 A1 WO2020073188 A1 WO 2020073188A1
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WO
WIPO (PCT)
Prior art keywords
steel ring
sealing device
fixed sealing
drop
dropping
Prior art date
Application number
PCT/CN2018/109419
Other languages
English (en)
French (fr)
Inventor
何宇光
Original Assignee
诸暨市浩海空调器制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 诸暨市浩海空调器制造有限公司 filed Critical 诸暨市浩海空调器制造有限公司
Priority to AU2018444718A priority Critical patent/AU2018444718A1/en
Priority to PCT/CN2018/109419 priority patent/WO2020073188A1/zh
Priority to CN201880002212.XA priority patent/CN111373187B/zh
Priority to US16/315,453 priority patent/US11112044B2/en
Priority to CA3115847A priority patent/CA3115847A1/en
Priority to EP18936788.1A priority patent/EP3865755B1/en
Publication of WO2020073188A1 publication Critical patent/WO2020073188A1/zh

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Classifications

    • 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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/091—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
    • 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
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/141—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
    • F16L13/142—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside with a sealing element inserted into the female part before crimping or rolling
    • 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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/03—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection
    • 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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/02—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined
    • F16L37/04—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an elastic outer part pressing against an inner part by reason of its elasticity
    • F16L37/05—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an elastic outer part pressing against an inner part by reason of its elasticity tightened by the pressure of a mechanical element

Definitions

  • the invention relates to a fitting of a clamping type pipe fitting, in particular to an anti-dropout steel ring and a fixed sealing device for the clamping type pipe fitting.
  • Compression fittings made of copper, stainless steel, carbon steel and other materials have been rapidly promoted in terms of water supply, heating, gas supply, etc. due to their easy installation, safety, reliability, and environmental protection.
  • the commonly used fixed sealing device of the clamping type pipe fitting generally adopts a steel ring embedded in the steel ring, and the steel ring is provided with a row of tines opposite to the direction of the tube to ensure the anti-ejection performance.
  • the steel ring In the middle of the steel ring and the sealing ring There is a plastic ring to prevent the sharp teeth of the steel ring from damaging the sealing ring.
  • the existing The design is to open a parallel gap on the circumference of the steel ring, and the gap is closed after clamping, but the gap is easily misplaced during the tube extraction process, resulting in poor resistance to the extraction of the steel ring and further damage to the sealing performance;
  • the plastic ring placed in the sealing ring is made of hard plastic. After the compression, the outer diameter size becomes smaller, the plastic ring can only shrink along the tube The direction is deformed and bent, and the sealing ring part is also deformed accordingly, thereby destroying the sealing performance of the sealing ring.
  • the technical problem to be solved by the present invention is how to improve the anti-stripping strength and sealing performance of the clamping type pipe fitting after clamping.
  • the present invention provides an anti-dropping steel ring for a clamping type pipe fitting, characterized in that the anti-dropping steel ring has a first nip portion and a second nip portion distributed in the circumferential direction, the first The bite portion is provided to extend radially from the inner peripheral wall of the drop-out prevention steel ring, and the second bite portion is provided to extend axially from the periphery of the drop-out prevention steel ring and incline inward.
  • first engaging portion and the inner peripheral wall of the anti-dropping steel ring are integrally formed.
  • the first nip portion is a tooth-shaped protrusion portion punched out from the inner peripheral wall of the anti-dropping steel ring.
  • first nip portion and the second nip portion are offset from each other in the circumferential direction.
  • the anti-dropping steel ring has a first interface portion and a second interface portion, the first interface portion is a convex portion, the second interface portion is a concave portion that can accommodate the convex portion, the first interface portion and the second interface portion are provided as Through the cooperation of the concave portion and the convex portion, the closure of the anti-dropping steel ring is realized.
  • both the first interface part and the second interface part are set to be V-shaped.
  • the invention also provides a fixed sealing device including the anti-dropping steel ring according to any one of claims 1 to 5, wherein the clamping end of the fixed sealing device has an installation portion, and the anti-dropping steel ring is provided in the installation portion , Plastic gasket and sealing ring, the plastic gasket is located in the middle of the steel ring and sealing ring.
  • the outer side of the plastic gasket has a hook-shaped flange, and a groove is formed between the hook-shaped flange and the plastic gasket.
  • the hook-shaped flange is a thin-walled structure, and the groove is configured to be compressible when pressed.
  • both the first bite portion and the second bite portion of the anti-dropping steel ring are facing the limit end of the fixed sealing device.
  • the present invention has the following specific beneficial effects:
  • the first nip portion and the second nip portion are offset from each other in the circumferential direction, and when pressed, it can make the force of the anti-drop steel ring uniform;
  • Both the first bite portion and the second bite portion are facing the inside of the press-fitting pipe, which is opposite to the direction in which the pipe comes out, and can strengthen the pipe in the same direction to prevent it from coming out;
  • the first interface part and the second interface part have a V-shaped structure, so that it is not easy to be misaligned during the tube extraction process, and the anti-extraction performance of the steel ring is improved;
  • Hook-shaped flange is designed on the outside of the plastic washer.
  • the hook-shaped flange is a thin-walled structure, and there is a compressible groove between the hook-shaped flange and the plastic washer to prevent the plastic washer from being deformed and bent in the direction of the pipe after being pressed. Break the seal.
  • FIG. 1 is a schematic diagram of an anti-dropping steel ring according to a specific embodiment of the present invention.
  • FIG. 2 is an exploded schematic view of the installation of the fixed sealing device before clamping in a specific embodiment of the present invention
  • FIG. 3 is an enlarged schematic cross-sectional view of a plastic washer of a specific embodiment of the present invention.
  • FIG. 4 is a schematic front cross-sectional view of a fixed sealing device according to a specific embodiment of the present invention without being pressed;
  • FIG. 5 is a schematic cross-sectional view of a fixed sealing device according to an embodiment of the present invention after being pressed.
  • the inner wall of the anti-dropping steel ring 11 has a row of first engaging portions 112 spaced apart in the circumferential direction, and extends at the periphery of one side of the anti-dropping steel ring 11 in the axial direction
  • a row of second nip portions 111 distributed at intervals in the circumferential direction.
  • the bottom of the first nip portion 112 is formed by stamping, which is beneficial to simplify the process and save costs.
  • the first nip portion 112 and the second nip portion 111 are shifted from each other in the circumferential direction, and when pressed, the first nip portion 112 and the second nip portion 111 bite into the outer wall material of the tube 2 and are shifted from each other. It can make the stress of the anti-dropping steel ring even.
  • the inner wall of the anti-dropping steel ring 11 has a plurality of rows of first engaging portions 112 distributed in the circumferential direction, and the axial direction of the anti-dropping steel ring 11 is on one side or on both sides.
  • a row of second nip portions 111 distributed at intervals in the circumferential direction extends.
  • the multiple rows of the first nip portions 112 may be arranged staggered from each other.
  • the first interface portion of the anti-dropping steel ring 11 is a convex portion 113
  • the second interface portion is a concave portion 114 that can receive the convex portion 113.
  • the convex portion 113 cooperates with the concave portion 114 to close the anti-dropping steel ring 11.
  • the structures of the convex portion 113 and the concave portion 114 are both V-shaped structures. After being clamped, the clamp-type pipe fitting 3 prevents the diameter of the steel ring 11 from becoming smaller, and the convex portion 113 cooperates with the concave portion 114. When there is an internal pressure or external pulling force, the V-shaped structure can effectively prevent The disengaged steel ring 11 is misaligned in the direction of the tube 2 to ensure the anti-stripping strength and sealing performance.
  • FIGS. 2 and 3 Another specific embodiment of the present invention is shown in FIGS. 2 and 3, the clamping end of the fixed sealing device 3 has a mounting portion 31, the mounting portion 31 has a first end edge 311 and a second end edge 312, the second end edge 312 Inclined inward and connected with the fixed sealing device 3 as a whole, the cross section of the mounting portion 31 is a U-shaped structure, and the anti-dropping steel ring 11, the plastic gasket 12 and the sealing ring 13 are installed in the mounting portion 31.
  • a bite portion 112 and a second bite portion 111 are both facing the limit end 32 of the fixed sealing device 3.
  • the end of the tube 2 When pressed, the end of the tube 2 is located at the limit end of the fixed sealing device 3, and the first bite portion 112 and The second biting portion 111 bites into the outer wall material of the tube 2 to prevent the tube 2 from loosening in the axial direction.
  • the clamping end of the fixed sealing device 3 is where the external force is applied, and the limit end of the fixed sealing device 3 can limit the end of the tube 2 inserted therein to a specific position.
  • the anti-dropping steel ring 11, the plastic washer 12 and the sealing ring 13 are all circular, and the outer diameters of the anti-dropping steel ring 11, the plastic washer 12 and the sealing ring 13 are all equal to the inner diameter of the mounting portion 31 of the fixed sealing device 3, and the anti-dropping
  • the inner diameters of the steel ring 11, the plastic gasket 12 and the sealing ring 13 are slightly larger than the outer diameter of the tube 2 to facilitate the insertion of the tube 2 during installation.
  • the first end edge 311 and the second end edge 312 fix the anti-dropping steel ring 11, the plastic gasket 12 and the sealing ring 13 in the mounting portion 31, so that the anti-dropping steel ring 11, the plastic gasket 12 and the sealing ring 13 are not easy to be fitted
  • the pipe fitting 3 drops.
  • the outer side of the plastic washer 12 has a hook-shaped flange 121, which is thin-walled
  • a compressible groove 122 is formed between the hook flange 121 and the plastic washer 12.
  • the groove 122 on the outer side of the plastic washer 12 is compressed and closed due to its shape feature, so that the outer diameter of the plastic washer 12 becomes smaller, and the plastic washer 12 is prevented from being pressed.
  • FIGS. 4 and 5 Another specific embodiment of the present invention is shown in FIGS. 4 and 5.
  • the first end 311 of the mounting portion 31 is pressed against the tube 2 in the radial direction, and the diameter of the mounting portion 31 becomes smaller, which forces The diameters of the anti-falling steel ring 11, the plastic washer 12, and the sealing ring 13 pressing on the second end 111 become smaller accordingly.
  • the first biting portion 112 and the second biting portion 111 of the anti-dropping steel ring 11 will bite into the outer wall material of the tube 2, and the first interface portion and the second interface portion on the anti-dropping steel ring 11 cooperate
  • the closure of the steel ring 11 is achieved, the groove 122 on the plastic gasket 12 is compressed, the sealing ring 13 is compressed and is permanently sealed against the tube 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Pipe Accessories (AREA)

Abstract

一种用于卡压式管件的防脱出钢圈（11）及包括该防脱出钢圈（11）的固定密封装置（3），防脱出钢圈（11）具有分布在圆周方向上的第一咬合部（112）和第二咬合部（111），第一咬合部（112）被设置为由防脱出钢圈（11）的内周壁径向延伸，第二咬合部（111）被设置为由防脱出钢圈（11）的周边轴向延伸并向内倾斜。

Description

一种用于卡压式管件的防脱出钢圈及固定密封装置
技术领域
本发明涉及一种卡压式管件的配件，尤其涉及用于卡压式管件的防脱出钢圈及固定密封装置。
背景技术
用铜、不锈钢、碳钢等材料制成的卡压式管件，在供水、供暖、供气等方面因其安装方便、安全可靠及环保等优点而得到迅速推广。
目前常用的卡压式管件的固定密封装置一般是采用内嵌一个钢圈，钢圈上带有一排与管子脱出方向相反的尖齿，来保证其抗脱出性能，在钢圈与密封圈中间垫有一个塑料圆环，以防止钢圈尖齿破坏密封圈。但是，因钢圈上仅一排尖齿，不能有效保证管件内***的管子在内压力或外拉力的作用下不会脱出；因卡压后钢圈外径尺寸会变小，所以现有的设计是在钢圈的圆周上开一个平行缺口，卡压后缺口闭合，但在管子脱出过程中，缺口极易错位，导致钢圈的抗脱出性能变差，并进一步破坏密封性能；在钢圈与密封圈中放入的塑料圆环，为保证其支撑作用，采用的材质为硬质塑料，在卡压后，外径尺寸变小的情况下，塑料圆环因不能收缩，只能沿管子方向变形而被折弯，密封圈部分也相应变形，进而破坏密封圈的密封性能。
因此，本领域的技术人员致力于开发一种能提高卡压式管件在卡压后的抗脱出强度及密封性能的固定密封装置以克服现有技术中存在的问题。
发明内容
有鉴于现有技术的上述缺陷，本发明所要解决的技术问题是如何提高卡压式管件在卡压后的抗脱出强度及密封性能。
为实现上述目的，本发明提供了一种用于卡压式管件的防脱出钢圈，其特征在于，防脱出钢圈具有分布在圆周方向上的第一咬合部和第二咬合部，第一咬合部被设置为由防脱出钢圈的内周壁径向延伸，第二咬合部被设置为由防脱出钢圈的周边轴向延伸并向内倾斜。
进一步地，第一咬合部与防脱出钢圈的内周壁是一体成型的。
进一步地，第一咬合部为对防脱出钢圈的内周壁冲压而得的齿状突起部。
进一步地，第一咬合部与第二咬合部在圆周方向上相互错开。
进一步地，防脱出钢圈具有第一接口部和第二接口部，第一接口部为凸部，第二接口部为可容纳凸部的凹部，第一接口部与第二接口部被设置为通过凹部与凸部的配合实现防脱出钢圈的闭合。
进一步地，第一接口部与第二接口部均设置为V型。
本发明还提供一种包括如权利要求1~5中任一条的防脱出钢圈的固定密封装置，其特征在于，固定密封装置的卡压端具有安装部，安装部内设有防脱出钢圈、塑料垫圈和密封圈，塑料垫圈位于防脱出钢圈和密封圈的中间。
进一步地，塑料垫圈的外侧具有勾状凸缘，勾状凸缘与塑料垫圈之间形成凹槽。
进一步地，勾状凸缘为薄壁结构，凹槽被设置为受到挤压时可压缩。
进一步地，防脱出钢圈的第一咬合部与第二咬合部均朝向固定密封装置的限位端。
与现有技术相比，本发明具有如下具体的有益效果：
（1） 防脱出钢圈的第一咬合部与第二咬合部的设计能够有效保证管件内***的管子在内压力或外拉力的作用下不会脱出；
（2） 对防脱出钢圈的内周壁冲压而得的第一咬合部，工艺简单，节约成本；
（3） 第一咬合部与第二咬合部在圆周方向上相互错开，在受到挤压时，能够使得防脱出钢圈受力均匀；
（4） 第一咬合部与第二咬合部均朝向卡压式管件的内部，与管子脱出的方向相反，能够在同一方向上加固管子，防止其脱出；
（5） 第一接口部和第二接口部为V型结构，使得在管子脱出过程中，不易错位，提高了钢圈的抗脱出性能；
（6） 在塑料垫圈外侧设计勾状凸缘，勾状凸缘为薄壁结构，并且勾状凸缘与塑料垫圈之间具有可压缩的凹槽，避免塑料垫圈在卡压后沿管子方向变形折弯而破坏密封圈。
以下将结合附图对本发明的构思、具体结构及产生的技术效果作进一步说明，以充分地了解本发明的目的、特征和效果。
附图说明
图1为本发明的一种具体实施方式的防脱出钢圈的示意图；
图2为本发明的一种具体实施方式的固定密封装置未卡压前安装分解示意图；
图3为本发明的一种具体实施方式的塑料垫圈的横截面放大示意图；
图4为本发明的一种具体实施方式的固定密封装置未卡压的前剖面示意图；
图5为本发明的一种具体实施方式的固定密封装置卡压后的剖面示意图。
具体实施方式
以下参考说明书附图介绍本发明的多个优选实施例，使其技术内容更加清楚和便于理解。本发明可以通过许多不同形式的实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例。
本发明的一个具体实施例如图1所示，防脱出钢圈11的内壁上具有一排沿圆周方向间隔分布的第一咬合部112，在防脱出钢圈11的一侧周边沿轴向延伸出一排沿圆周方向间隔分布的第二咬合部111。第一咬合部112的底部通过冲压而成，有利于简化工艺，节约成本。第一咬合部112与第二咬合部111在圆周方向上相互错开排列，在受到挤压时，第一咬合部112和第二咬合部111咬合在管子2的外壁材料内，相互错开排列的设计能够使得防脱出钢圈受力均匀。
本发明的另一个具体实施例为，防脱出钢圈11的内壁上具有多排沿圆周方向分布的第一咬合部112，在防脱出钢圈11的一侧周边或者在两侧周边沿轴向延伸出一排沿圆周方向间隔分布的第二咬合部111。多排的第一咬合部112之间可以相互错开排列。
在防脱出钢圈11的第一接口部为凸部113，第二接口部为可容纳凸部113的凹部114，凸部113与凹部114配合实现防脱出钢圈11的闭合。本实施例中，凸部113与凹部114的结构均为V型结构。经卡压后的卡压式管件3，防脱出钢圈11直径变小，凸部113与凹部114配合，当有内压力或外拉力作用时，V型结构因其形状特征，可有效防止防脱出钢圈11沿管子2方向错位，保证了抗脱强度及密封性能。
本发明的另一个具体实施例如图2和3所示，固定密封装置3的卡压端具有一个安装部31，安装部31具有第一端边311和第二端边312，第二端边312向内倾斜与固定密封装置3连接成一体，安装部31的横截面为U型结构，安装部31内安装防脱出钢圈11、塑料垫圈12和密封圈13，防脱出钢圈11上的第一咬合部112和第二咬合部111均朝向固定密封装置3的限位端32，在受到挤压时，管子2的端部位于固定密封装置3的限位端，而第一咬合部112和第二咬合部111咬合进管子2的外壁材料中，防止管子2沿轴向松脱。固定密封装置3的卡压端是外力施加的地方，固定密封装置3的限位端能够将***其中的管子2的端部限制于特定位置。
防脱出钢圈11、塑料垫圈12和密封圈13均为圆形，防脱出钢圈11、塑料垫圈12和密封圈13的外径均与固定密封装置3的安装部31的内径相等，防脱出钢圈11、塑料垫圈12和密封圈13的内径均略大于管子2的外径，以方便安装时管子2的***。第一端边311和第二端边312将防脱出钢圈11、塑料垫圈12和密封圈13固定在安装部31内，使得防脱出钢圈11、塑料垫圈12和密封圈13不易从卡装管件3掉落。
图3示出设置在防脱出钢圈11和密封圈13之间的塑料垫圈12的横截面，本实施例中，塑料垫圈12的外侧具有勾状凸缘121，勾状凸缘121为薄壁结构，勾状凸缘121与塑料垫圈12之间形成可压缩的凹槽122。经卡压后的固定密封装置3，塑料垫圈12的外侧具有的凹槽122，因其形状特征，凹槽122被压缩闭合，使塑料垫圈12的外直径变小，避免塑料垫圈12在卡压后沿方向变形折弯而破坏密封圈13，并且能够有效的将防脱出钢圈11与密封圈13有效隔离，防止密封圈13被防脱出钢圈11上的第一咬合部112与第二咬合部111破坏，实现了可靠密封。
本发明的另一个具体实施例如图4和5所示，在卡压时，安装部31的第一端边311沿径向压在管子2上，此时安装部31的直径变小，进而迫使靠压在第一端边311上的防脱出钢圈11、塑料垫圈12和靠压在第二端边111上的密封圈13的直径随之变小。卡压完成后，防脱出钢圈11的第一咬合部112和第二咬合部111会咬合进管子2的外壁材料中，防脱出钢圈11上的第一接口部与第二接口部相互配合实现所述防脱出钢圈11的闭合，塑料垫圈12上的凹槽122被压缩，密封圈13被压缩并且持久地密封压靠着管子2。
以上详细描述了本发明的较佳具体实施例。应当理解，本领域的普通技术无需创造性劳动就可以根据本发明的构思作出诸多修改和变化。因此，凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。

Claims (10)

  1. 一种用于卡压式管件的防脱出钢圈，其特征在于，所述防脱出钢圈具有分布在圆周方向上的第一咬合部和第二咬合部，所述第一咬合部被设置为由所述防脱出钢圈的内周壁径向延伸，所述第二咬合部被设置为由所述防脱出钢圈的周边轴向延伸并向内倾斜。
  2. 如权利要求1所述的防脱出钢圈，其中，所述第一咬合部与所述防脱出钢圈的内周壁是一体成型的。
  3. 如权利要求1所述的防脱出钢圈，其中，所述第一咬合部为对所述防脱出钢圈的内周壁冲压而得的齿状突起部。
  4. 如权利要求1所述的防脱出钢圈，其中，所述第一咬合部与所述第二咬合部在圆周方向上相互错开。
  5. 如权利要求1所述的防脱出钢圈，其中，所述防脱出钢圈具有第一接口部和第二接口部，所述第一接口部为凸部，所述第二接口部为可容纳凸部的凹部，所述第一接口部与第二接口部被设置为通过所述凹部与所述凸部的配合实现所述防脱出钢圈的闭合。
  6. 如权利要求5所述的防脱出钢圈，其中，所述第一接口部与第二接口部均设置为V型。
  7. 一种包括如权利要求1~5中任一条所述的防脱出钢圈的固定密封装置，其特征在于，所述固定密封装置的卡压端具有安装部，所述安装部内设有所述防脱出钢圈、塑料垫圈和密封圈，所述塑料垫圈位于所述防脱出钢圈和所述密封圈的中间。
  8. 如权利要求6所述的固定密封装置，其中，所述塑料垫圈的外侧具有勾状凸缘，所述勾状凸缘与所述塑料垫圈之间形成凹槽。
  9. 如权利要求7所述的固定密封装置，其中，所述勾状凸缘为薄壁结构，所述凹槽被设置为受到挤压时可压缩。
  10. 如权利要求6所述的固定密封装置，其中，所述防脱出钢圈的第一咬合部与第二咬合部均朝向所述固定密封装置的限位端。
PCT/CN2018/109419 2018-10-09 2018-10-09 一种用于卡压式管件的防脱出钢圈及固定密封装置 WO2020073188A1 (zh)

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