WO2023071685A1 - 一种球阀 - Google Patents

一种球阀 Download PDF

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Publication number
WO2023071685A1
WO2023071685A1 PCT/CN2022/122171 CN2022122171W WO2023071685A1 WO 2023071685 A1 WO2023071685 A1 WO 2023071685A1 CN 2022122171 W CN2022122171 W CN 2022122171W WO 2023071685 A1 WO2023071685 A1 WO 2023071685A1
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WO
WIPO (PCT)
Prior art keywords
valve
valve stem
end cover
limiting member
ball valve
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PCT/CN2022/122171
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English (en)
French (fr)
Inventor
寿周阳
宣永斌
Original Assignee
浙江盾安人工环境股份有限公司
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Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to KR1020247012673A priority Critical patent/KR20240055884A/ko
Publication of WO2023071685A1 publication Critical patent/WO2023071685A1/zh

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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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details

Definitions

  • the present application relates to the technical field related to flow control, in particular to a ball valve.
  • the ball valve is a valve in which the opening and closing part (usually a sphere) is driven by the valve stem and rotates around the axis of the ball valve itself.
  • the valve stem drives the ball to rotate only 90° in the valve body, so as to realize the function of the ball valve as an on-off valve.
  • the ball valve in the related art is used to limit the rotation of the ball driven by the valve stem.
  • a boss is installed on the end surface of the valve seat on the ball valve, and a limit pin (or limit plate) is installed on the valve stem. The collision between the boss and the limit pin (or limit sheet) realizes the limit of the rotation angle of the valve stem.
  • a limit pin (or limit plate) on the valve stem, not only the processing is difficult and the processing cost is high, but also the structural settings of the limit pin (or limit plate) and the boss make the corresponding material cost high.
  • a ball valve is provided.
  • the application provides a ball valve, including a valve body, an end cover and a valve stem, the end cover is installed on the valve body, one end of the valve stem is rotatably installed in the valve body, the other end of the valve stem One end protrudes from the valve body through the end cover; a limiting member is arranged on the inner peripheral wall of the end cover, and the valve stem can limitly cooperate with the limiting member, and make the valve stem in the The maximum angle when turning inside the end cap is 90°.
  • valve stem can limitly cooperate with the limiting member through surface-to-surface contact.
  • the limiting member has a first abutting surface and a second abutting surface, the plane where the first abutting surface is located is perpendicular to the plane where the second abutting surface is located, the The limiting member can respectively limit the valve rod through the first abutting surface and the second abutting surface.
  • the radius of rotation of the valve stem is defined as R
  • the half of the thickness of the end of the valve stem protruding from the valve body is defined as L
  • the stopper is used to abut against the
  • the width of the end face of the valve stem is defined as I, wherein R, L and I satisfy the following relational formula:
  • the number of the limiter is one; or, the number of the limiter is two, and the two limiters are symmetrical with respect to the axis of the valve stem.
  • the limiting member is installed on the inner peripheral wall of the end cover by welding; or, the limiting member is integrally formed with the end cover.
  • the projection of the inner peripheral wall of the end cap toward the limiting member can cover the limiting member.
  • a first stepped surface is provided on the valve stem, and an end surface of the limiting member facing the valve body abuts against the first stepped surface.
  • valve stem is provided with a second stepped surface, and the second stepped surface abuts against an end surface of the end cover facing the valve body.
  • a valve seat is welded on the valve body, and the end cover is fixed to the valve seat in a threaded manner.
  • valve stem can limitly cooperate with the limiting member through line-to-surface contact.
  • Fig. 1 is a schematic structural view of a ball valve according to one or more embodiments.
  • Fig. 2 is a structural schematic diagram of another viewing angle of a ball valve according to one or more embodiments.
  • Fig. 3 is a schematic diagram of a partial structure of a ball valve from another perspective according to one or more embodiments.
  • Fig. 4 is an enlarged view of P in Fig. 3 .
  • Fig. 5 is a schematic structural view of a valve stem and a stopper assembled on an inner peripheral wall of an end cap according to one or more embodiments.
  • Figure 6 is a cross-sectional view of a ball valve according to one or more embodiments.
  • valve body 10
  • end cover 21, inner peripheral wall; 30, valve stem; 31, first step surface; 32, second step surface; 40, valve seat; 50, limit piece ; 51, the first abutting surface; 52, the second abutting surface.
  • an element when an element is referred to as being “disposed on” another element, it may be directly disposed on the other element or there may be an intervening element. When an element is referred to as being “disposed on” another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being “affixed to” another element, it can be directly affixed to the other element or intervening elements may also be present.
  • a ball valve 100 provided by an embodiment of the present application includes a valve body 10 , an end cover 20 , a valve stem 30 and a valve seat 40 .
  • the valve seat 40 of this embodiment is installed on the valve body 10 by welding, and the end cover 20 is fixed on the valve seat 40 in a threaded manner, so as to realize the assembly and connection of the end cover 20 on the valve body 10, which is convenient The function of installing the end cover 20 on the valve body 10 .
  • valve stem 30 in this embodiment is rotatably installed in the valve body 10, wherein the other end of the valve stem 30 protrudes outward through the end cover 20, so that when the ball valve 100 is in operation, it is convenient to drive the valve stem 30 in the valve body. 10 to satisfy the operation of the ball valve 100 switch valve.
  • the valve stem 30 is connected with a ball (not shown) in the valve body 10, so that the valve stem 30 can simultaneously drive the ball to rotate in the valve body 10, and realize the opening and closing of the ball valve 100. homework.
  • a limiting member 50 is provided on the inner peripheral wall 21 of the end cover 20 of this embodiment, and the valve stem 30 can limitly cooperate with the limiting member 50, so that the valve stem 30 can rotate in the end cover 20.
  • the maximum angle is 90°.
  • the valve rod 30 can only rotate 90° when the ball valve 100 is on and off.
  • the limiting member 50 may be configured as a block structure, which is not specifically limited here.
  • the ball valve 100 of this embodiment realizes the control of the rotation angle range of the valve stem 30 by setting the limit member 50 on the inner peripheral wall 21 of the end cover 20 and utilizing the limit fit between the limit member 50 and the valve stem 30 . limited. That is to say, through the above-mentioned reasonable structural setting, the ball valve has the effects of simplifying the structure, reducing the difficulty of processing, and facilitating installation on the basis of satisfying the limit of the rotation angle of the valve stem, thereby reducing the production cost of the ball valve 100. effect.
  • valve stem 30 of this embodiment can be limitedly matched with the limiting member 50 through surface-to-surface contact, so as to improve the stability when the valve stem 30 collides with the limiting member 50, and ensure that the valve stem
  • the maximum rotation angle range of 30 relative to the end cover 20 is 90°, that is, the rotation angle range of the ball driven by the valve rod 30 in the valve body is limited to 90°, so that the ball valve 100 can be stably maintained in the open or closed working state, which improves the Ball valve 100 working stability.
  • the limited fit between the valve stem 30 and the limiting member 50 is not limited to the form of surface contact shown in FIG. The collision between them can also be realized by means of line contact and fit. That is, the valve stem 30 can be limitedly fitted with the limiting member 50 through line-to-surface contact.
  • the limiting member 50 of this embodiment has a first abutting surface 51 and a second abutting surface 52, the plane where the first abutting surface 51 is located is perpendicular to the plane where the second abutting surface 52 is located, and the limiting member 50 can respectively cooperate with the two end faces of the valve stem 30 in the thickness direction through the first abutment surface 51 and the second abutment surface 52, so as to realize the limit of the valve stem 30, so set, when the limit member 50 is satisfied On the basis of limiting the rotation angle of the valve rod 30, it has the effect of simplifying the structure and reducing the production cost.
  • the width I of the end surface of the limiting member 50 provided in this embodiment for abutting against the valve stem 30 can be specifically determined by the formula Calculated, wherein, R is the radius of rotation of the valve stem 30 , and L is half of the thickness of the end of the valve stem 30 protruding from the valve body 10 .
  • the two end faces of the limiting member 50 provided in this embodiment, which are respectively used to abut against the valve stem 30 can be two mutually perpendicular planes, so that the gap between the valve body and the limiting part The limited fit is in the form of surface contact, which makes the limit more reliable.
  • the thickness of the valve stem 30 refers to the distance between the two end surfaces of the valve stem 30 for abutting against the limiting member 50 .
  • the valve stem 30 can also adopt a cylindrical shape or other irregular shapes.
  • the edge of the valve stem 30 is protruded with an edge for abutting against the limiter 50, and the limiter 50 can Through the first abutting surface 51 and the second abutting surface 52 abutting against different edges on the valve stem 30 respectively, at this time, the valve stem and the limiting part are in a line contact and fit manner to realize the restriction on the valve stem. bit.
  • the first abutting surface 51 and the second abutting surface 52 on the limiting part can be designed as arc-shaped surfaces, and the two in the thickness direction of the valve stem 30 are used for
  • the end face of the collision limit part is designed as a plane, so as to realize line contact fit.
  • the number of the limiting member 50 in this embodiment may be one, so as to facilitate the assembly and connection of the limiting member 50 on the inner peripheral wall 21 of the end cover 20 .
  • the number of the stopper 50 of the present application can be two, and the two stoppers 50 are arranged symmetrically with respect to the axis of the valve stem 30 to further increase the rotation angle of the stopper 50 to the valve stem 30
  • the reliability of the limit prevents the limit member 50 from falling off or deformed due to excessive force during the opening and closing process of the ball valve 100, resulting in failure of the limit.
  • the limiting member 50 of this embodiment is installed on the inner peripheral wall 21 of the end cover 20 by welding; or, the limiting member 50 and the end cover 20 are connected to form an integral structure, so as to realize the connection between the limiting member 50 and the end cover 20.
  • the assembled connection between the covers 20 facilitates the installation of the stopper 50 on the inner peripheral wall 21 of the end cover 20 , which saves processing steps and costs.
  • the projection of the inner peripheral wall 21 of the end cap 20 toward the limiting member 50 in this embodiment can cover the limiting member 50 .
  • the end cap 20 can protect the limiter 50 and prevent the limiter 50 from being affected by external components when the ball valve 100 is in use.
  • the limiting member 50 is not limited to be housed in the end cover 20 , and a portion of the limiting member 50 can also protrude from the end cover 20 , which will not be elaborated here.
  • valve stem 30 of this embodiment is provided with a first step surface 31, and one end surface of the stopper 50 facing the valve body 10 abuts against the first step surface 31, so as to realize the pairing of the stopper 50
  • the assembly limit of the valve stem 30 on the end cover 20 is to prevent the valve stem 30 from coming out of the valve body 10 due to the influence of the high-pressure medium in the valve body 10 .
  • valve stem 30 of this embodiment is provided with a second stepped surface 32, and the second stepped surface 32 abuts against an end surface of the end cover 20 facing the valve body 10, so as to realize the connection between the end cover 20 and the valve stem 30.
  • the assembly limit is used to prevent the valve stem 30 from falling out of the valve body 10 due to the influence of the high-pressure medium in the valve body 10 .
  • the ball valve 100 in this embodiment can be a stainless steel ball valve or a copper ball valve, and those skilled in the art can select and set according to needs.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

一种球阀(100)。该球阀(100)包括阀体(10)、端盖(20)和阀杆(30)，端盖(20)安装于阀体(10)上，阀杆(30)的一端转动地安装于阀体(10)上，阀杆(30)的另一端经端盖(20)向外伸出；端盖(20)的内周壁上设置有限位件(50)，阀杆(30)能够与限位件(50)限位配合，并使阀杆(30)在端盖(20)内转动时的最大角度为90°。

Description

一种球阀
相关申请
本申请要求2021年10月29日申请的，申请号为202122654724.6，发明名称为“一种球阀”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及流量控制相关技术领域，特别是涉及一种球阀。
背景技术
球阀为启闭件(通常为球体)由阀杆带动，并绕球阀自身轴线作旋转运动的阀门。
可以理解，球阀工作时，阀杆带动球体在阀体内只能旋转90°，以实现该球阀的开关阀的作用。目前，相关技术中的球阀上用以限制阀杆带动球体的转动的方式，通常在球阀上阀座的端面处安装凸台，在阀杆上安装限位销(或限位片)，并利用凸台与限位销(或限位片)之间的抵碰，来实现对阀杆转动角度的限位。然而，因需在阀杆上安装限位销(或限位片)，不仅加工难度大，加工成本高，而且限位销(或限位片)及凸台的结构设置，使得对应的材料成本高。
发明内容
根据本申请的各种实施例，提供一种球阀。
本申请提供一种球阀，包括阀体、端盖和阀杆，所述端盖安装于所述阀 体上，所述阀杆的一端转动地安装于所述阀体内，所述阀杆的另一端经所述端盖伸出所述阀体；所述端盖的内周壁上设置有限位件，所述阀杆能够与所述限位件限位配合，并使所述阀杆在所述端盖内转动时的最大角度为90°。
在其中一个实施例中，所述阀杆能够通过面与面接触的方式与所述限位件限位配合。
在其中一个实施例中，所述限位件具有第一抵接面和第二抵接面，所述第一抵接面所在的平面垂直于所述第二抵接面所在的平面，所述限位件能够通过所述第一抵接面及所述第二抵接面分别限位所述阀杆。
在其中一个实施例中，所述阀杆的旋转半径定义为R，所述阀杆伸出所述阀体的端部的厚度的一半定义为L，所述限位件上用于抵碰所述阀杆的端面的宽度定义为I，其中，R、L和I满足以下关系式：
Figure PCTCN2022122171-appb-000001
在其中一个实施例中，所述限位件的数量为一个；或者，所述限位件的数量为两个，两个所述限位件相对于所述阀杆轴线对称。
在其中一个实施例中，所述限位件以焊接的方式安装于所述端盖的内周壁上；或者，所述限位件与所述端盖一体成型。
在其中一个实施例中，所述端盖的内周壁朝所述限位件的投影，能够覆盖所述限位件。
在其中一个实施例中，所述阀杆上设置有第一台阶面，所述限位件朝所述阀体的一端面抵靠于所述第一台阶面。
在其中一个实施例中，所述阀杆上设置有第二台阶面，所述第二台阶面抵靠于所述端盖上朝所述阀体的一端面。
在其中一个实施例中，所述阀体上焊接有阀座，所述端盖以螺纹连接的方式固定于所述阀座。
在其中一个实施例中，所述阀杆能够通过线与面接触的方式与所述限位件进行限位配合。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更好地描述和说明这里公开的那些发明的实施例和/或示例，可以参考一幅或多幅附图。用于描述附图的附加细节或示例不应当被认为是对所公开的发明、目前描述的实施例和/或示例以及目前理解的这些发明的最佳模式中的任何一者的范围的限制。
图1为根据一个或多个实施例的球阀的结构示意图。
图2为根据一个或多个实施例的球阀另一视角的结构示意图。
图3为根据一个或多个实施例的球阀的其它视角的局部结构示意图。
图4为图3中P处放大图。
图5为根据一个或多个实施例中阀杆及限位件装配于端盖内周壁时的结构示意图。
图6为根据一个或多个实施例的球阀的剖视图。
其中，100、球阀；10、阀体；20、端盖；21、内周壁；30、阀杆；31、第一台阶面；32、第二台阶面；40、阀座；50、限位件；51、第一抵接面；52、第二抵接面。
具体实施方式
下面将结合本申请实施方式中的附图，对本申请实施方式中的技术方案 进行清楚、完整地描述，显然，所描述的实施方式仅仅是本申请一部分实施方式，而不是全部的实施方式。基于本申请中的实施方式，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式，都属于本申请保护的范围。
需要说明的是，当元件被称为“设于”另一个元件，它可以直接设在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“设置于”另一个元件，它可以是直接设置在另一个元件上或者可能同时存在居中元件。当一个元件被认为是“固定于”另一个元件，它可以是直接固定在另一个元件上或者可能同时存在居中元件。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。本申请所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1至图6，本申请一实施例所提供的球阀100，包括阀体10、端盖20、阀杆30和阀座40。
本实施例的阀座40以焊接的方式安装于阀体10上，端盖20以螺纹连接的方式固定于阀座40，以此实现端盖20在该阀体10上的装配连接，具有便于将该端盖20安装于阀体10上的作用。
本实施例的阀杆30的一端转动地安装于阀体10内，其中阀杆30的另一端经端盖20向外伸出，使得该球阀100工作时，能够便于驱动阀杆30在阀体10上转动，以满足对该球阀100开关阀的作业。需要说明的是，阀杆30上设于阀体10内的部分连接有球体(图未标出)，使得阀杆30能够同时带动球体在阀体10内转动，并实现对该球阀100开关阀的作业。
在本实施例中，本实施例的端盖20的内周壁21上设置有限位件50，阀杆30能够与限位件50限位配合，并使阀杆30在端盖20内转动时的最大角度为90°。以此满足该球阀100在开关阀作业时，阀杆30只能转动90°的使用需求。需要说明的是，在一些实施例中，限位件50可以设置为块状结构，在此不做具体限定。
可以理解，本实施例的球阀100通过在端盖20内周壁21上设置限位件50，利用限位件50与阀杆30之间的限位配合，来实现对阀杆30转动角度范围的限定。也即是，通过上述合理的结构设置，使得该球阀在满足对阀杆转动角度限位的基础上，具有简化结构、降低加工难度、便于安装的效果，进而起到降低该球阀100生产成本的作用。
其中，本实施例的阀杆30能够通过面与面接触的方式与限位件50进行限位配合，以此提高该阀杆30与限位件50发生抵碰时的稳定性，确保阀杆30相对端盖20的最大转动角度范围为90°，也即限制阀杆30带动球体在阀体内的转动角度范围为90°，使得球阀100能够稳定保持在开启或者关闭的工作状态，提高了该球阀100工作稳定性。需要说明的是，阀杆30与限位件50之间的限位配合方式不局限为图5中所示面接触的形式，对本领域技术人员来说，对于阀杆30与限位件50之间的抵碰也可以采用线接触配合的方式实现。即阀杆30能够通过线与面接触的方式与所述限位件50进行限位配合
具体地，本实施例的限位件50具有第一抵接面51和第二抵接面52，第一抵接面51所在的平面垂直于第二抵接面52所在的平面，限位件50能够通过第一抵接面51及第二抵接面52与阀杆30在厚度方向上的两个端面分别配合，实现对阀杆30的限位，如此设置，在满足限位件50对阀杆30转动角度限位的基础上，具有简化结构，降低生产成本的效果。
另外，需要说明的是，如图5所示，本实施例提供的限位件50上用于抵碰阀杆30的端面的宽度I，具体可通过公式
Figure PCTCN2022122171-appb-000002
计算得出，其中，R为阀杆30的旋转半径，L为阀杆30伸出阀体10的端部的厚度的一半。示例性地，如图5所示，本实施例提供的限位件50上分别用于抵碰阀杆30的两个端面可以为两个相互垂直的平面，这样阀体与限位部之间的限位配合为面接触形式，使得限位更加可靠。可以理解的是，通过上述的结构设置，具体实现该限位件上用于抵碰阀杆的端面宽度的计算，本领域技术人员可以根据实际工况需要利用该公式进行选择参数设置，这里不做具体说明。需要说明的是，阀杆30的厚度是指阀杆30上用于抵碰限位件50的两个端面之间的距离。
当然，在另外的一些实施例中，阀杆30也可以采用圆柱形或其他不规则形状，例如，阀杆30的边缘凸设有用于抵碰限位件50的棱边，限位件50能够通过第一抵接面51及第二抵接面52分别抵碰阀杆30上的不同棱边，此时，阀杆与限位部之间为线接触配合的方式，实现对阀杆的限位。除此之外，在更多的一些实施例中，限位部上的第一抵接面51和第二抵接面52可以设计为弧形面，阀杆30厚度方向上的两个用于抵触限位部的端面设计为平面，如此来实现线接触配合。如此设置，在满足限位件50对阀杆30转动角度限位的基础上，可以匹配设置不同形状的限位阀杆30，以适应不同的应用需求。
在本实施例中，本实施例的限位件50的数量可以为一个，以便于限位件50在该端盖20内周壁21上的装配连接。
在其它的实施例中，本申请的限位件50的数量可以为两个，两个限位件50相对于阀杆30的轴线对称设置，以进一步提高限位件50对阀杆30转动角度限位的可靠性，防止该球阀100在开关阀过程中，因作用力过大而导致限 位件50的脱落或者变形，导致限位失效。
其次，本实施例的限位件50以焊接的方式安装于端盖20的内周壁21上；或者，限位件50与端盖20连接为一体成型结构，以此实现限位件50与端盖20之间的装配连接，从而便于将限位件50安装于端盖20的内周壁21上，节约了加工步骤，节省了成本。
在本实施例中，本实施例端盖20的内周壁21朝限位件50的投影，能够覆盖限位件50。使得该端盖20能够对限位件50起到保护的作用，防止该球阀100在使用时限位件50受到外置部件的影响。当然，需要说明的是，限位件50不局限收容于端盖20内，还可将限位件50部分凸出端盖20设置，在此就不展开阐述。
在本实施例中，本实施例的阀杆30上设置有第一台阶面31，限位件50朝阀体10的一端面抵靠于第一台阶面31，以此实现限位件50对阀杆30在端盖20上的装配限位，以防止阀杆30受到阀体10内高压力介质的影响而从阀体10内脱出。
进一步地，本实施例的阀杆30上设置有第二台阶面32，第二台阶面32抵靠于端盖20上朝向阀体10的一端面，以此实现端盖20对阀杆30的装配限位，以防止阀杆30受到阀体10内高压力介质的影响而从阀体10内脱出。
另外，需要说明的是，本实施例的球阀100可以为不锈钢球阀或者铜制球阀，本领域技术人员可根据需要选择设置。
以上实施方式的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施方式中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
本技术领域的普通技术人员应当认识到，以上的实施方式仅是用来说明 本申请，而并非用作为对本申请的限定，只要在本申请的实质精神范围内，对以上实施方式所作的适当改变和变化都落在本申请要求保护的范围内。

Claims (11)

  1. 一种球阀，包括阀体、端盖和阀杆，所述端盖安装于所述阀体上，所述阀杆的一端转动地安装于所述阀体内，所述阀杆的另一端经所述端盖伸出所述阀体；
    其特征在于，所述端盖的内周壁上设置有限位件，所述阀杆能够与所述限位件限位配合，并使所述阀杆在所述端盖内转动时的最大角度为90°。
  2. 根据权利要求1所述的球阀，其中，所述阀杆能够通过面与面接触的方式与所述限位件进行限位配合。
  3. 根据权利要求2所述的球阀，其中，所述限位件具有第一抵接面和第二抵接面，所述第一抵接面垂直于所述第二抵接面，所述限位件能够通过所述第一抵接面及所述第二抵接面分别限位所述阀杆。
  4. 根据权利要求2所述的球阀，其中，所述阀杆的旋转半径定义为R，所述阀杆伸出所述阀体的端部的厚度的一半定义为L，所述限位件上用于抵碰所述阀杆的端面的宽度定义为I，其中，R、L和I满足以下关系式：
    Figure PCTCN2022122171-appb-100001
    Figure PCTCN2022122171-appb-100002
  5. 根据权利要求1所述的球阀，其中，所述限位件的数量为一个；或者，所述限位件的数量为两个，两个所述限位件相对于所述阀杆的轴线对称。
  6. 根据权利要求1所述的球阀，其中，所述限位件以焊接的方式安装于所述端盖的内周壁上；或者，所述限位件与所述端盖一体成型。
  7. 根据权利要求1所述的球阀，其中，所述端盖的内周壁朝所述限位件的投影，能够覆盖所述限位件。
  8. 根据权利要求1所述的球阀，其中，所述阀杆上设置有第一台阶面，所 述限位件朝所述阀体的一端面抵靠于所述第一台阶面。
  9. 根据权利要求1所述的球阀，其中，所述阀杆上设置有第二台阶面，所述第二台阶面抵靠于所述端盖上朝所述阀体的一端面。
  10. 根据权利要求1所述的球阀，其中，所述阀体上焊接有阀座，所述端盖以螺纹连接的方式固定于所述阀座。
  11. 根据权利要求1所述的球阀，其中，所述阀杆能够通过线与面接触的方式与所述限位件进行限位配合。
PCT/CN2022/122171 2021-10-29 2022-09-28 一种球阀 WO2023071685A1 (zh)

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KR200319367Y1 (ko) * 2003-03-27 2003-07-12 주식회사 아세아유니온 유체용 볼밸브
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CN110397752A (zh) * 2018-04-25 2019-11-01 浙江三花智能控制股份有限公司 球阀
CN216112404U (zh) * 2021-10-29 2022-03-22 浙江盾安机械有限公司 一种球阀
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US3743243A (en) * 1971-07-01 1973-07-03 D Scaramucci Indexing stop of valve stem
AU3444495A (en) * 1994-11-29 1996-06-06 Abb Metering Pty Ltd An improved valve
KR200319367Y1 (ko) * 2003-03-27 2003-07-12 주식회사 아세아유니온 유체용 볼밸브
CN101392841A (zh) * 2007-09-20 2009-03-25 浙江三花股份有限公司 开关阀及操作开关阀用的操作机构
CN102359616A (zh) * 2011-10-18 2012-02-22 浙江华龙阀门有限公司 一种球阀的限位结构
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CN217381703U (zh) * 2022-01-26 2022-09-06 浙江盾安机械有限公司 球阀

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