WO2022134455A1 - Beveled middle-flange small-bore fixed ball valve - Google Patents

Beveled middle-flange small-bore fixed ball valve Download PDF

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Publication number
WO2022134455A1
WO2022134455A1 PCT/CN2021/095738 CN2021095738W WO2022134455A1 WO 2022134455 A1 WO2022134455 A1 WO 2022134455A1 CN 2021095738 W CN2021095738 W CN 2021095738W WO 2022134455 A1 WO2022134455 A1 WO 2022134455A1
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WO
WIPO (PCT)
Prior art keywords
valve
valve body
ball
seat
small
Prior art date
Application number
PCT/CN2021/095738
Other languages
French (fr)
Chinese (zh)
Inventor
李鑫
程启涛
康健
张昌挺
叶锋
Original Assignee
浙江德卡控制阀仪表有限公司
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 浙江德卡控制阀仪表有限公司 filed Critical 浙江德卡控制阀仪表有限公司
Priority to GB2111545.6A priority Critical patent/GB2608195A/en
Publication of WO2022134455A1 publication Critical patent/WO2022134455A1/en

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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
    • 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
    • F16K5/06—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 with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • F16K5/0689—Packings between housing and plug
    • 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
    • F16K5/06—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 with plugs having spherical surfaces; Packings therefor
    • 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
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • 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
    • F16K5/06—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 with plugs having spherical surfaces; Packings therefor
    • F16K5/0626—Easy mounting or dismounting means
    • 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 invention relates to a ball valve, in particular to a fixed ball valve.
  • a ball valve is a valve in which the valve stem drives the valve ball to rotate and rotates around the axis of the ball valve.
  • the ball valve includes a valve body, a valve ball, a valve stem and a valve seat, as shown in Figure 3.
  • the valve seat of the existing ball valve is also formed by connecting the left valve body and the right valve body, but the installation surfaces of the two are vertical. On the surface, this structure is suitable for the valve ball and valve stem split structure, but for the valve ball and valve stem integrated structure, it cannot be installed in this valve body.
  • the present invention innovatively provides a small-diameter fixed ball valve with a sloping surface and a middle flange, which is suitable for integrally forming a valve ball and a valve stem.
  • the small-diameter fixed ball valve with a middle flange on the inclined plane includes a valve body, a valve stem, a valve seat, a valve ball and a fixed shaft.
  • the left valve body has a left installation slope
  • the right valve body has a right installation slope
  • the left installation slope of the left valve body fits with the right installation slope of the right valve body
  • the valve stem is located on the left valve body
  • the fixed shaft is located on the right valve body
  • the valve ball is located between the left valve body and the right valve body
  • both the left valve body and the right valve body are threadedly connected with an adjustment seat
  • the valve seat is located on the valve ball
  • the adjusting seat can act on the valve seat
  • the adjusting seat has a groove for the tool to enter.
  • valve body and the valve stem are integrally formed.
  • a positioning protrusion is provided on the right installation inclined surface of the right valve body, and a positioning groove is provided on the left installation inclined surface of the left valve body, and the positioning protrusion is matched and arranged in the positioning groove.
  • a disc spring is arranged between the adjusting seat and the valve seat.
  • the valve seat is provided with an O-shaped sealing ring, and the O-shaped sealing ring acts on the valve body.
  • a flexible graphite packing is arranged on the valve seat.
  • the integrally formed valve ball and valve stem can also be installed.
  • Fig. 1 is the structural representation of the present invention
  • Fig. 2 is that Fig. 1 is the partial enlarged view of A place
  • FIG. 3 is a schematic structural diagram of a conventional ball valve.
  • this kind of inclined surface medium flange small diameter fixed ball valve includes a valve body, a valve stem 4, a valve seat 5, a valve ball 3 and a fixed shaft 7.
  • the valve body consists of a left valve body 1 and a right valve body.
  • the valve body 2 is assembled by bolts 8.
  • the left valve body 1 has a left installation slope
  • the right valve body 2 has a right installation slope
  • the left installation slope of the left valve body 1 is fitted with the right installation slope of the right valve body 2.
  • the rod 4 is located on the left valve body 1, the fixed shaft 7 is located on the right valve body 2, and the valve ball 3 is located between the left valve body 1 and the right valve body 2, and the left valve body 1 and the right valve body 2 are both threadedly connected with Adjusting seat 6, the valve seat 5 is located between the valve ball 3 and the adjusting seat 6, the adjusting seat 6 can act on the valve seat 5, and the adjusting seat 5 has a groove 60 for the tool to enter.
  • valve stem 4 can be passed through the left valve body 1 from bottom to top, and the valve ball 3 integrally formed with the valve stem 4 is close to the valve on the left valve body 1.
  • valve body After the valve body is installed, the left valve body 1 and the right valve body
  • the two valve seats 5 on 2 are close to the valve ball 3, and then enter the groove 60 of the adjustment seat 6 through a tool, and rotate the adjustment seat 6, because the adjustment seat 6 is threaded, so the adjustment seat 6 pushes the valve seat 5 Move inward and drive the valve seat 5 to act on the valve ball 3, thus completing the installation.
  • valve body adopts the inclined plane split structure, which is suitable for the installation of the valve body and the valve stem 4 integrally formed structure.
  • valve body and the valve stem can also be installed in a 4-part structure.
  • the present invention is provided with a positioning protrusion on the right installation slope of the right valve body 2, and a positioning groove on the left installation slope of the left valve body 1.
  • the positioning can be completed as long as the positioning protrusions are arranged in the positioning grooves, and then the bolts 8 can be screwed on.
  • the present invention is provided with a disc spring 9 between the adjustment seat 6 and the valve seat 5 .
  • the disc spring 9 can make the valve seat 5 have a certain floating effect, thereby forming a good sealing effect with the valve ball 3 .
  • an O-ring 10 is provided on the valve seat 5, and the O-ring 10 acts on the valve body.
  • a flexible graphite packing 11 is provided on the valve seat 5, and the flexible graphite packing 11 can enable the ball valve to achieve good part sealing even under high temperature and high pressure.

Landscapes

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

Abstract

A beveled middle-flange small-bore fixed ball valve suitable for integral molding and mounting of a valve ball and a valve stem, comprising a valve body, a valve stem (4), valve seats (5), a valve ball (3), and a fixing shaft (7). The valve body is formed by assembling a left valve body (1) and a right valve body (2) by means of a bolt (8); the left valve body (1) comprises a left mounting bevel, the right valve body (2) comprises a right mounting bevel, and the left mounting bevel of the left valve body (1) is attached to the right mounting bevel of the right valve body (2); the valve stem (4) is located on the left valve body (1); the fixing shaft (7) is located on the right valve body (2); the valve ball (3) is located between the left valve body (1) and the right valve body (2); the left valve body (1) and the right valve body (2) are both threadedly connected to adjusting seats (6); each valve seat (5) is located between the valve ball (3) and the corresponding adjusting seat (6); the adjusting seats (6) can act on the valve seats (5); and each adjusting seat (6) is provided with a recess (60) for a tool to enter. The left valve body and the right valve body of the ball valve are mounted by means of a bevel, so that the ball valve is suitable for manufacturing small-bore fixed ball valves.

Description

斜面中法兰小口径固定球阀Inclined face mid-flange small diameter fixed ball valve 技术领域technical field
本发明涉及一种球阀，具体涉及一种固定球阀。The invention relates to a ball valve, in particular to a fixed ball valve.
背景技术Background technique
球阀是一种阀杆带动阀球转动并绕球阀轴线作旋转运动的阀门。球阀包括有阀体、阀球、阀杆以及阀座，如图3所示，一般现有球阀的阀座也是由左阀体与右阀体连接而成的，只是两者安装的面是垂直面，这种结构适合阀球与阀杆分体式结构，而对于阀球与阀杆一体式结构，就无法安装到这种阀体内。A ball valve is a valve in which the valve stem drives the valve ball to rotate and rotates around the axis of the ball valve. The ball valve includes a valve body, a valve ball, a valve stem and a valve seat, as shown in Figure 3. Generally, the valve seat of the existing ball valve is also formed by connecting the left valve body and the right valve body, but the installation surfaces of the two are vertical. On the surface, this structure is suitable for the valve ball and valve stem split structure, but for the valve ball and valve stem integrated structure, it cannot be installed in this valve body.
技术问题technical problem
然而，对于小口径固定球阀来说，由于阀球较小，除了在上面开流通孔外，还需要在上面开用于连接阀杆的凹槽，这在工艺上很难实现，即使实现了，由于凹槽基面太小，导致阀球容易损坏。因此最好的方式是阀球与阀杆一体成型，然而阀球与阀杆一体成型后，现有普通的阀门结构又无法正常安装。However, for the small-diameter fixed ball valve, due to the small valve ball, in addition to opening the flow hole on the top, it is also necessary to open the groove for connecting the valve stem on the top, which is difficult to achieve in the process, even if it is realized, Because the groove base surface is too small, the valve ball is easily damaged. Therefore, the best way is to form the valve ball and the valve stem integrally. However, after the valve ball and the valve stem are integrally formed, the existing ordinary valve structure cannot be installed normally.
技术解决方案technical solutions
鉴于现有技术存在的不足，本发明创新提供了一种适于阀球与阀杆一体成型安装的斜面中法兰小口径固定球阀。In view of the deficiencies in the prior art, the present invention innovatively provides a small-diameter fixed ball valve with a sloping surface and a middle flange, which is suitable for integrally forming a valve ball and a valve stem.
这种斜面中法兰小口径固定球阀，包括有阀体、阀杆、阀座、阀球以及固定轴，其特征在于：所述阀体由左阀体与右阀体通过螺栓组装而成，所述左阀体具有左安装斜面，所述右阀体具有右安装斜面，所述左阀体的左安装斜面与右阀体的右安装斜面相贴合，所述阀杆位于左阀体上，所述固定轴位于右阀体上，所述阀球位于左阀体与右阀体之间，所述左阀体与右阀体上均螺纹连接有调节座，所述阀座位于阀球与调节座之间，所述调节座可作用于阀座上，所述调节座上具有供工具进入的凹槽。The small-diameter fixed ball valve with a middle flange on the inclined plane includes a valve body, a valve stem, a valve seat, a valve ball and a fixed shaft. The left valve body has a left installation slope, the right valve body has a right installation slope, the left installation slope of the left valve body fits with the right installation slope of the right valve body, and the valve stem is located on the left valve body , the fixed shaft is located on the right valve body, the valve ball is located between the left valve body and the right valve body, both the left valve body and the right valve body are threadedly connected with an adjustment seat, and the valve seat is located on the valve ball Between the adjusting seat and the adjusting seat, the adjusting seat can act on the valve seat, and the adjusting seat has a groove for the tool to enter.
所述阀体与阀杆一体成型。The valve body and the valve stem are integrally formed.
所述右阀体的右安装斜面上设有定位凸起，所述左阀体的左安装斜面上设有定位凹槽，所述定位凸起匹配设置于定位凹槽内。A positioning protrusion is provided on the right installation inclined surface of the right valve body, and a positioning groove is provided on the left installation inclined surface of the left valve body, and the positioning protrusion is matched and arranged in the positioning groove.
所述调节座与阀座之间设有碟簧。A disc spring is arranged between the adjusting seat and the valve seat.
所述阀座上设有O型密封圈，所述O型密封圈作用在阀体上。The valve seat is provided with an O-shaped sealing ring, and the O-shaped sealing ring acts on the valve body.
所述阀座上设有柔性石墨盘根。A flexible graphite packing is arranged on the valve seat.
有益效果beneficial effect
按照本发明提供的一种斜面中法兰小口径固定球阀，由于左阀体与右阀体通过斜面安装，这样一体成型的阀球与阀杆也实现安装。According to the small-diameter fixed ball valve provided by the present invention, since the left valve body and the right valve body are installed through the inclined surface, the integrally formed valve ball and valve stem can also be installed.
附图说明Description of drawings
图1为本发明的结构示意图；Fig. 1 is the structural representation of the present invention;
图2为图1为A处的局部放大图；Fig. 2 is that Fig. 1 is the partial enlarged view of A place;
图3为现有球阀的结构示意图。FIG. 3 is a schematic structural diagram of a conventional ball valve.
1、左阀体；2、右阀体；3、阀球；4、阀杆；5、阀座； 6、调节座；7、固定轴；8、螺栓； 9、碟簧；10、O型密封圈；11、柔性石墨盘根；60、凹槽。1. Left valve body; 2. Right valve body; 3. Valve ball; 4. Valve stem; 5. Valve seat; 6. Adjusting seat; 7. Fixed shaft; 8. Bolt; 9. Disc spring; 10. O-type Sealing ring; 11. Flexible graphite packing; 60. Groove.
本发明的最佳实施方式BEST MODE FOR CARRYING OUT THE INVENTION
在此处键入本发明的最佳实施方式描述段落。Type the best mode description paragraph of the invention here.
本发明的实施方式Embodiments of the present invention
如图1与图2所示，这种斜面中法兰小口径固定球阀，包括有阀体、阀杆4、阀座5、阀球3以及固定轴7，阀体由左阀体1与右阀体2通过螺栓8组装而成，左阀体1具有左安装斜面，右阀体2具有右安装斜面，左阀体1的左安装斜面与右阀体2的右安装斜面相贴合，阀杆4位于左阀体1上，固定轴7位于右阀体2上，而阀球3位于左阀体1与右阀体2之间，左阀体1与右阀体2上均螺纹连接有调节座6，阀座5位于阀球3与调节座6之间，调节座6可作用于阀座5上，调节座5上具有供工具进入的凹槽60。As shown in Figure 1 and Figure 2, this kind of inclined surface medium flange small diameter fixed ball valve includes a valve body, a valve stem 4, a valve seat 5, a valve ball 3 and a fixed shaft 7. The valve body consists of a left valve body 1 and a right valve body. The valve body 2 is assembled by bolts 8. The left valve body 1 has a left installation slope, the right valve body 2 has a right installation slope, and the left installation slope of the left valve body 1 is fitted with the right installation slope of the right valve body 2. The rod 4 is located on the left valve body 1, the fixed shaft 7 is located on the right valve body 2, and the valve ball 3 is located between the left valve body 1 and the right valve body 2, and the left valve body 1 and the right valve body 2 are both threadedly connected with Adjusting seat 6, the valve seat 5 is located between the valve ball 3 and the adjusting seat 6, the adjusting seat 6 can act on the valve seat 5, and the adjusting seat 5 has a groove 60 for the tool to enter.
安装时，由于左阀体1具有左安装斜面，这样就可以将阀杆4从下往上穿过左阀体1，而阀杆4一体成型的阀球3就靠近左阀体1上的阀座5，之后将右阀体2的右安装斜面与左阀体1的左安装斜面贴合，然后用多个螺栓8将两者固定，阀体安装好后，左阀体1与右阀体2上的两个阀座5均靠近阀球3，接着通过工具进入调节座6的凹槽60，并转动调节座6，由于调节座6是螺纹连接，这样调节座6就推着阀座5向内侧移动，并驱使阀座5作用在阀球3上，这样就完成安装。During installation, since the left valve body 1 has a left installation slope, the valve stem 4 can be passed through the left valve body 1 from bottom to top, and the valve ball 3 integrally formed with the valve stem 4 is close to the valve on the left valve body 1. Seat 5, and then fit the right mounting slope of the right valve body 2 to the left mounting slope of the left valve body 1, and then fix the two with a plurality of bolts 8. After the valve body is installed, the left valve body 1 and the right valve body The two valve seats 5 on 2 are close to the valve ball 3, and then enter the groove 60 of the adjustment seat 6 through a tool, and rotate the adjustment seat 6, because the adjustment seat 6 is threaded, so the adjustment seat 6 pushes the valve seat 5 Move inward and drive the valve seat 5 to act on the valve ball 3, thus completing the installation.
这种阀体采用斜面分体结构，适合阀体与阀杆4一体成型结构的安装。当然，阀体与阀杆4分体结构也能安装。This valve body adopts the inclined plane split structure, which is suitable for the installation of the valve body and the valve stem 4 integrally formed structure. Of course, the valve body and the valve stem can also be installed in a 4-part structure.
为了方便左阀体1与右阀体2的合并，本发明在右阀体2的右安装斜面上设有定位凸起，而在左阀体1的左安装斜面上设有定位凹槽，合并左阀体1与右阀体2时，只要将定位凸起匹配设置于定位凹槽内就能完成定位，之后拧上螺栓8即可。In order to facilitate the combination of the left valve body 1 and the right valve body 2, the present invention is provided with a positioning protrusion on the right installation slope of the right valve body 2, and a positioning groove on the left installation slope of the left valve body 1. When the left valve body 1 and the right valve body 2 are matched, the positioning can be completed as long as the positioning protrusions are arranged in the positioning grooves, and then the bolts 8 can be screwed on.
为了使阀座5具有一定的弹性，本发明在调节座6与阀座5之间设有碟簧9。碟簧9能使阀座5具有一定的浮动效果，从而与阀球3形成良好的密封效果。In order to make the valve seat 5 have a certain elasticity, the present invention is provided with a disc spring 9 between the adjustment seat 6 and the valve seat 5 . The disc spring 9 can make the valve seat 5 have a certain floating effect, thereby forming a good sealing effect with the valve ball 3 .
为了使阀座5与阀体之间形成密封，阀座5上设有O型密封圈10，O型密封圈10作用在阀体上。In order to form a seal between the valve seat 5 and the valve body, an O-ring 10 is provided on the valve seat 5, and the O-ring 10 acts on the valve body.
为了使阀座5与阀体之间形成更好的密封效果，在阀座5上设有柔性石墨盘根11，柔性石墨盘根11能使球阀在高温高压下也能实现良好的部位密封。In order to form a better sealing effect between the valve seat 5 and the valve body, a flexible graphite packing 11 is provided on the valve seat 5, and the flexible graphite packing 11 can enable the ball valve to achieve good part sealing even under high temperature and high pressure.
工业实用性Industrial Applicability
在此处键入工业实用性描述段落。Type an industrial applicability description paragraph here.
序列表自由内容Sequence Listing Free Content
在此处键入序列表自由内容描述段落。Type the Sequence Listing free content description paragraph here.

Claims (6)

  1. 斜面中法兰小口径固定球阀，包括有阀体、阀杆、阀座、阀球以及固定轴，其特征在于：所述阀体由左阀体与右阀体通过螺栓组装而成，所述左阀体具有左安装斜面，所述右阀体具有右安装斜面，所述左阀体的左安装斜面与右阀体的右安装斜面相贴合，所述阀杆位于左阀体上，所述固定轴位于右阀体上，所述阀球位于左阀体与右阀体之间，所述左阀体与右阀体上均螺纹连接有调节座，所述阀座位于阀球与调节座之间，所述调节座可作用于阀座上，所述调节座上具有供工具进入的凹槽。A small-diameter fixed ball valve with a middle flange on an inclined plane includes a valve body, a valve stem, a valve seat, a valve ball and a fixed shaft. The left valve body has a left installation slope, the right valve body has a right installation slope, the left installation slope of the left valve body fits with the right installation slope of the right valve body, and the valve stem is located on the left valve body, so The fixed shaft is located on the right valve body, the valve ball is located between the left valve body and the right valve body, the left valve body and the right valve body are both threadedly connected with an adjustment seat, and the valve seat is located between the valve ball and the adjustment seat. Between the seats, the adjusting seat can act on the valve seat, and the adjusting seat has a groove for the tool to enter.
  2. 根据权利要求1所述的斜面中法兰小口径固定球阀，其特征在于：所述阀体与阀杆一体成型。The small-diameter fixed ball valve with a sloped mid-flange according to claim 1, wherein the valve body and the valve stem are integrally formed.
  3. 根据权利要求1所述的斜面中法兰小口径固定球阀，其特征在于：所述右阀体的右安装斜面上设有定位凸起，所述左阀体的左安装斜面上设有定位凹槽，所述定位凸起匹配设置于定位凹槽内。The inclined surface medium flange small diameter fixed ball valve according to claim 1, wherein a positioning protrusion is provided on the right mounting inclined surface of the right valve body, and a positioning recess is provided on the left mounting inclined surface of the left valve body The positioning protrusion is matched and arranged in the positioning groove.
  4. 根据权利要求1所述的斜面中法兰小口径固定球阀，其特征在于：所述调节座与阀座之间设有碟簧。The small-diameter fixed ball valve with a middle flange on an inclined plane according to claim 1, wherein a disc spring is arranged between the adjusting seat and the valve seat.
  5. 根据权利要求2所述的斜面中法兰小口径固定球阀，其特征在于：所述阀座上设有O型密封圈，所述O型密封圈作用在阀体上。The small-diameter fixed ball valve with a middle flange on an inclined plane according to claim 2, wherein an O-shaped sealing ring is arranged on the valve seat, and the O-shaped sealing ring acts on the valve body.
  6. 根据权利要求2所述的斜面中法兰小口径固定球阀，其特征在于：所述阀座上设有柔性石墨盘根。The small-diameter fixed ball valve with a middle flange on an inclined plane according to claim 2, characterized in that: the valve seat is provided with a flexible graphite packing.
PCT/CN2021/095738 2020-12-23 2021-05-25 Beveled middle-flange small-bore fixed ball valve WO2022134455A1 (en)

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CN112664672A (en) * 2020-12-23 2021-04-16 浙江德卡控制阀仪表有限公司 Bevel middle flange small-caliber fixed ball valve

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