WO2014161207A1 - 一种新型高压时微扭矩球阀 - Google Patents

一种新型高压时微扭矩球阀 Download PDF

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Publication number
WO2014161207A1
WO2014161207A1 PCT/CN2013/074087 CN2013074087W WO2014161207A1 WO 2014161207 A1 WO2014161207 A1 WO 2014161207A1 CN 2013074087 W CN2013074087 W CN 2013074087W WO 2014161207 A1 WO2014161207 A1 WO 2014161207A1
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Prior art keywords
valve
ball
pressure
valve seat
plate
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PCT/CN2013/074087
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English (en)
French (fr)
Inventor
邱金全
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Qiu Jinquan
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Publication of WO2014161207A1 publication Critical patent/WO2014161207A1/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
    • 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
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/205—Sealing effected by the flowing medium
    • 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
    • F16K5/0647—Spindles or actuating 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
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug

Definitions

  • the invention relates to a ball valve, in particular to a novel high pressure micro torque ball valve.
  • a high-pressure, non-torque ball valve including a valve body, a connecting body, a ball body, a valve stem and a valve seat, and an oil storage chamber on the valve seat for storing oil
  • the chamber is connected to the oil control device, and the oil control device comprises a ejector sleeve, a ejector rod disposed in the ejector sleeve, a check valve disposed in the connection body, an oil inlet passage and an oil outlet passage, and a valve seat oil passage disposed in the valve seat
  • the front part of the jack sleeve is located in the connecting body, the tail of the jack sleeve is located in the valve body; the one-way valve is placed on the top end of the jack; the oil passage is connected to the oil storage chamber at one end, and the other end is connected to the oil inlet passage through the one-way valve;
  • the oil inlet is connected to the valve seat oil passage
  • the defect of the ball valve is that: the one-way valve and the connecting body are integrated processing structure, that is, the valve body of the one-way valve borrows the structure of the connecting body, which is not only troublesome in processing and maintenance, but also the one-way valve breaks the entire connecting body. The whole is scrapped, the cost is too high; the second is that when the reverse is closed, the pressure in the oil storage chamber cannot be completely released, which is easy to cause the closure to be incomplete; the third is that when the ball valve is opened without pressure in the upstream, the contact between the spherical surface and the valve seat surface is easy to cause abrasion .
  • the invention solves the problem that the one-way valve and the connecting body in the existing non-torque ball valve have a one-piece structure, which leads to troublesome processing and high maintenance cost, and the pressure of the oil storage chamber in the non-torque ball valve cannot be completely released and the pressure is not opened, resulting in a spherical surface and Seat sealing surface wear and other problems .
  • the present invention mainly comprises a valve stem, a connecting body, a ball body, a valve seat and a valve seat pushing mechanism, wherein the valve seat pushing mechanism comprises a valve seat pushing mechanism when pressure is applied. And the valve seat pushing mechanism when no pressure;
  • the pressure-lifting valve seat pushing-out mechanism comprises a transmission plate connected to the valve stem, a ejector rod, a separate one-way valve, a downstream oil passage, a pressure storage chamber and an upstream oil passage, and the one-way valve is installed in the connection body, and is stored
  • the pressure chamber communicates with the downstream of the check valve through the downstream oil passage, and the upstream of the check valve communicates with the upstream of the pipeline through the upstream oil passage;
  • the pressure storage chamber is surrounded by a valve seat, a pressure storage chamber pressure plate and a connecting body, and the pressure storage chamber pressure plate is connected with a fixing plate, and the top rod is mounted on the pressure storage chamber pressing plate and the fixing plate;
  • the drive plate is provided with a groove
  • the top end of the top rod is provided with a top surface
  • the groove of the drive plate is matched with the top surface of the top rod
  • the front end of the top rod is placed at the downstream end of the check valve
  • the left and right movements of the top rod control the one-way valve to open and close
  • a ejector positioning block is mounted on the ball body, and a positioning groove is arranged on the ejector positioning block, and a positioning protrusion is arranged at the tail end of the ejector pin, and the positioning groove is matched with the positioning bulge, and the positioning bulge of the ejector tail falls into the positioning position.
  • the ejector pin When the ball valve is to be opened, the ejector pin is first ejected from the groove of the drive plate, the check valve is opened, the valve seat is disengaged from the ball, and then the valve stem is rotated to drive the ball to open the valve;
  • valve stem positioning block is engaged with the positioning structure of the tail rod tail, the one-way valve is pressed back by the valve spring, the one-way valve is closed, and the ball valve is sealed by the valve seat.
  • the utility model has the following advantages: one is a one-way valve independent structure, the one-way valve of the invention is an independent structure, the valve core of the one-way valve is disposed in the valve body, and the valve body is installed in the one-way valve mounting hole of the connecting body, A separate structure of the one-way valve and the connecting body is realized.
  • This single independent check valve is not only easy to process, but also easy to install and maintain, greatly improving the service life of the ball valve.
  • the second is to completely close the ball valve. Since the pressure storage chamber of the present invention is provided with a micro pressure relief passage, when the check valve is closed, the pressure in the pressure storage chamber can still pass through the micro pressure relief passage, so that the ball valve is completely closed and sealed.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Figure 2 is a partial enlarged view of Figure 1.
  • Figure 3 is a combination of the valve seat and the ball.
  • Figure 4 is a plan view of Figure 3.
  • Figure 5 is a schematic view showing the structure of the drive plate.
  • Figure 6 is a schematic view of the structure of the back of the drive plate.
  • Figure 7 is a schematic view of the structure of the valve stem.
  • Figure 8 is a cross-sectional view taken along line A-A of Figure 7.
  • Figure 9 is a left side view of Figure 7.
  • Figure 10 is a combination view of the valve stem inserted into the ball.
  • Figure 11 is a schematic view showing the structure of the pressure accumulating chamber pressure plate.
  • Figure 12 is a cross-sectional view taken along line A-A of Figure 11;
  • Figure 13 is a schematic structural view of a positioning block.
  • Figure 14 is a cross-sectional view taken along line A-A of Figure 13;
  • Figure 15 is a schematic view showing the structure of the jack.
  • Figure 16 is a partial cross-sectional structural view of the ram.
  • Figure 17 is a schematic view showing the structure of a check valve.
  • the present invention includes a valve stem 1, a connecting body 2, a ball 3, a valve seat 4, and a valve seat pushing mechanism, wherein the valve seat pushing mechanism includes a valve seat pushing mechanism with a pressure and a pressureless Valve seat pushing mechanism;
  • the pressurized valve seat pushing mechanism comprises a transmission plate 5 connected to the valve stem, a jack 6 , a separate check valve 7 , a downstream oil passage 9 , a pressure storage chamber 8 and an upstream oil passage, and a check valve 7 Installed in the connecting body 2, the pressure accumulating cavity 8 communicates with the downstream of the check valve 7 through the downstream oil passage 9, and the upstream of the check valve 7 communicates with the upstream of the pipe through the upstream oil passage 10.
  • the check valve 7 is composed of a valve body 72 and a valve core 71, and the valve body 71 is disposed in the valve body 72.
  • the pressure storage chamber 8 is surrounded by a valve seat 4, a pressure storage chamber pressure plate 11 and a connecting body 2, and the pressure storage chamber pressure plate 11 is connected with a fixing plate 12, and the top rod 6 is mounted to the pressure storage chamber pressing plate 11 and the fixing plate 12 on;
  • the drive plate 5 is provided with a groove, and the top end of the top rod 6 is provided with a top surface 61.
  • the groove of the drive plate is matched with the top surface 61 of the top rod.
  • the front end 62 of the top rod is placed at the downstream end of the check valve, and the movement of the top rod 6 is controlled by left and right.
  • a shank positioning block 13 is mounted on the ball body 3.
  • the ejector pin positioning block 13 is provided with a positioning groove 131.
  • the apex rod 6 is provided with a positioning protrusion 63 at the end end thereof, and the positioning groove 131 is matched with the positioning protrusion 63.
  • the pressure-free valve seat pushing mechanism includes an annular step 31 disposed on the ball 3, an inclined recess 32 disposed on the annular step 31, and an inclined boss 41 disposed on the outer ring end surface of the valve seat 4.
  • the spring 15 disposed between the valve seat 4 and the connecting body 2 is disposed on the sealing ring 16 of the outer ring of the valve seat 4, the oblique recess 32 and the inclined boss 41 are matched; when the ball valve is closed, the outer ring of the valve seat 4 The inclined boss 41 of the end surface falls into the oblique recess 32, the valve seat sealing ring 16 is engaged with the ball 3, and the valve is closed and sealed; when the rotating ball 3 opens the valve, the valve seat oblique boss 41 leaves the spherical oblique concave The port 32, the valve seat 4 is opened, and the seat seal 16 is disengaged from the ball 3.
  • the drive plate 5 is a circular plate, and the center of the drive plate 5 is a square hole 53.
  • the outer ring side of the drive plate 5 is provided with a symmetric oblique groove 51 and a diagonal groove 52.
  • the upper and lower ends of the ball 3 are placed in the fixed plate 12.
  • the pressure storage chamber pressure plate 11 is provided with a micro pressure relief through hole 19, and the micro pressure relief through hole 19 is in communication with the oil storage chamber 8.
  • the cross-sectional area 18 of the pressure accumulator chamber 8 is greater than the cross-sectional area 17 of the seat seal.
  • the top end of the valve stem 1 is provided with a square socket segment 115, and the square socket segment 115 is matched with the square socket 53 of the transmission plate 5.
  • the upper end of the ball body 3 is provided with a square recess 22, and the top end of the valve stem 1 is provided with a square connecting section 122, which is inserted into the square recess 22 of the upper part of the sphere 3; four of the square connecting sections 122
  • the surface is respectively cut with a slope, which is a slope 132, a slope 133, a slope 134, and a slope 135. The slope is such that the top end of the valve stem is inserted into the square recess 22 in the upper portion of the sphere 3, and the valve stem 1 and the sphere 3 are left.
  • the working principle of the invention is:
  • valve stem When the valve stem is turned to 5 degrees, the square section of the stem contacts the sphere. At this time, since the sealing surface of the valve seat is separated from the sphere, the valve stem can be easily rotated by 90 degrees without torque or micro torque to open the ball valve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Taps Or Cocks (AREA)
  • Multiple-Way Valves (AREA)

Abstract

一种高压时微扭矩球阀，包括阀杆（1）、连接体（2）、球体（3）、阀座（4）和阀座推出机构，所述的阀座推出机构包括带压时阀座推出机构和无压时阀座推出机构；带压时阀座推出机构包括与阀杆（1）连接的传动板（5）、顶杆（6）、独立的单向阀（7）、下游油道（9）、储压腔体（8）和上游油道（10），单向阀（7）安装于连接体（2）内，储压腔体（8）通过下游油道（9）与单向阀（7）的下游连通，单向阀（7）的上游通过上游油道（10）与管道上游连通；储压腔体（8）由阀座（4）、储压腔体压板（11）和连接体（2）围成，储压腔体压板（11）连接有固定板（12），顶杆（6）安装于储压腔体压板（11）和固定板（12）上；球体（3）上安装有顶杆定位块（13），顶杆定位块（13）上设有定位凹槽（131），顶杆（6）尾端设有定位凸头（63）。该球阀使用寿命长，密封效果好，球面和阀座磨损少。

Description

一种新型高压时微扭矩球阀 技术领域
本发明涉及一种球阀，尤其是一种新型高压时微扭矩球阀 。
背景技术
在中国专利申请公布说明书CN100356096C中，本发明人公开了一种高压时无扭矩球阀，该球阀包括阀体、连接体、球体、阀杆和阀座，阀座上设有储油室，储油室与控油装置相连，控油装置包括顶杆套、设于顶杆套内的顶杆，设于连接体内的单向阀、进油道和出油道，设于阀座内的阀座油道；顶杆套的前部位于连接体内，顶杆套的尾部位于阀体内；单向阀顶于顶杆的顶端；出油道一端连储油室，另一端通过单向阀与进油道相连；进油道与阀座油道相连，阀杆的边侧设有锥形凹窝，顶杆套的尾端顶在该锥形凹窝内；随着顶杆套外移，位于顶杆套内的顶杆也随之顶于阀杆而外移，从而推动单向阀打开，储油室内的高压油推动阀座反向移动，使阀座脱离球体。
这种球阀的缺陷在于：一是单向阀与连接体为一体加工结构，即单向阀的阀体借用了连接体的结构，这不仅加工、维修麻烦，而且单向阀一旦破损整个连接体全部报废，成本过高；二是在反向关闭时，储油室压力不能完全释放，容易造成关闭不完全；三是在上游无压力开启球阀时，由于球面和阀座面存在接触，容易导致磨损 。
技术问题
本发明解决的是现有无扭矩球阀中的单向阀与连接体为一体式结构导致加工麻烦、维护成本高，以及无扭矩球阀中储油室压力不能完全释放和无压力时开启导致球面与阀座密封面磨损等的问题 。
技术解决方案
本发明解决技术问题所采用的技方案是：本发明主要包括阀杆、连接体、球体、阀座和阀座推出机构，其特征在于所述的阀座推出机构包括带压时阀座推出机构和无压时阀座推出机构；
所述的带压时阀座推出机构包括与阀杆连接的传动板、顶杆、独立的单向阀、下游油道、储压腔体和上游油道，单向阀安装于连接体内，储压腔体通过下游油道与单向阀的下游连通，单向阀的上游通过上游油道与管道上游连通；
储压腔体由阀座、储压腔体压板和连接体围成，储压腔体压板连接有固定板，顶杆安装于储压腔体压板和固定板上；
传动板上设有凹槽，顶杆尾端设有顶面，传动板凹槽与顶杆顶面匹配，顶杆前端顶于单向阀下游端，顶杆左右运动控制单向阀启闭，顶杆尾端顶面落于传动板凹槽内时，单向阀关闭，顶杆尾端顶面脱离传动板凹槽，即被顶出时，单向阀开启；
球体上安装有顶杆定位块，顶杆定位块上设有定位凹槽，顶杆尾端设有定位凸头，定位凹槽与定位凸头匹配，当顶杆尾部的定位凸头落入定位块的定位凹槽时，顶杆尾端顶面也落于传动板凹槽内，单向阀的阀芯被阀弹簧推回，单向阀关闭。
当要开启球阀转动阀杆时，顶杆从传动板的凹槽内先顶出，开启单向阀，阀座与球体脱离，再转动阀杆带动球体打开阀门；
当要关闭球阀时，反方向转动阀杆转到关闭位置，阀杆定位块与顶杆尾部的定位结构卡合，单向阀被阀弹簧压回，单向阀关闭，球阀被阀座密封。
有益效果
本发明的有益效果是：一是单向阀独立结构，本发明的单向阀为独立结构，单向阀的阀芯设于阀体内，阀体安装于连接体的单向阀安装孔内，实现单向阀与连接体的分离结构。这种单个独立的单向阀，不仅加工方便，而且安装和维修也方便，极大地提高了球阀的使用寿命。二是使球阀完全关闭密封，由于本发明的储压腔体设有微泄压通道，当单向阀关闭时，储压腔体内的压力仍可通过微泄压通道，使球阀完全关闭密封 ，三是同时在上游无压力开启球阀时，阀座与球体处于脱离状态，球面和阀座面无接触，有效地保护了球面和阀座面 。
 附图说明
图1为本发明的结构示意图。
图2为图1的局部放大图。
图3为阀座和球体的组合图。
图4为图3的俯视图。
图5为传动板的结构示意图。
图6为传动板背面的结构示意图。
图7为阀杆的结构示意图。
图8为图7的A-A剖面示意图。
图9为图7的左视图。
图10为阀杆插于球体内的组合图。
图11为储压腔体压板的结构示意图。
图12为图11的A-A剖面示意图。
图13为定位块的结构示意图。
图14为图13的A-A剖面示意图。
图15为顶杆的结构示意图。
图16为顶杆的局部剖面结构示意图。
图17为单向阀的结构示意图。
 本发明的最佳实施方式
下面结合附图和实施例对本发明作进一步说明。
如图所示，本发明包括阀杆1、连接体2、球体3、阀座4和阀座推出机构，其特征在于所述的阀座推出机构包括带压时阀座推出机构和无压时阀座推出机构；
所述的带压时阀座推出机构包括与阀杆连接的传动板5、顶杆6、独立的单向阀7、下游油道9、储压腔体8和上游油道，单向阀7安装于连接体2内，储压腔体8通过下游油道9与单向阀7的下游连通，单向阀7的上游通过上游油道10与管道上游连通。所述的单向阀7由阀体72和阀芯71组成，所述的阀芯71设于阀体72内。
储压腔体8由阀座4、储压腔体压板11和连接体2围成，储压腔体压板11连接有固定板12，顶杆6安装于储压腔体压板11和固定板12上；
传动板5上设有凹槽，顶杆6尾端设有顶面61，传动板凹槽与顶杆顶面61匹配，顶杆前端62顶于单向阀下游端，顶杆6左右运动控制单向阀7启闭，顶杆尾端顶面61落于传动板凹槽内时，单向阀7关闭，顶杆尾端顶面61脱离传动板凹槽，即被顶出时，单向阀7开启。
球体3上安装有顶杆定位块13，顶杆定位块13上设有定位凹槽131，顶杆6尾端设有定位凸头63，定位凹槽131与定位凸头63匹配，当顶杆尾部的定位凸头63落入定位块13的定位凹槽131时，顶杆尾端顶面61也落于传动板凹槽内，单向阀7的阀芯71被阀弹簧14推回，单向阀7关闭。
所述的无压时阀座推出机构包括设于球体3上的环形台阶31，设于环形台阶31上的斜形凹口32、设于阀座4外环端面上的斜形凸台41、设于阀座4和连接体2之间的弹簧15，设于阀座4外环的密封圈16，斜形凹口32和斜形凸台41匹配；球阀关闭状态下，阀座4外环端面的斜形凸台41落入斜形凹口32内，阀座密封圈16与球体3贴合，阀门关闭密封；转动球体3打开阀门时，阀座斜形凸台41离开球体斜形凹口32，阀座4被顶开，阀座密封圈16与球体3脱离。
所述传动板5为圆形板，传动板5的中央为方形孔53，传动板5外圈边上设有对称的斜形凹槽51、斜形凹槽52。球体3上下二端置于固定板12内。储压腔体压板11上设有微泄压通孔19，该微泄压通孔19与储油腔体8连通。储压腔体8的横截面积18大于阀座密封圈截面积17。所述的阀杆1顶端设有方形插口段115，方形插口段115与传动板5的方形插孔53匹配卡紧。所述球体3上端设有方形凹口22，阀杆1顶端设有方形连接段122，该方形连接段122插于球体3上部的方形凹口22内；所述的方形连接段122的四个面上分别切有一个斜面，分别为斜面132、斜面133、斜面134、斜面135，该斜面使得阀杆顶端插于球体3上部的方形凹口22内后，阀杆1与球体3之间留有一定的转动间隙311，该间隙311保证了阀杆1在一定角度内持续转动（球体不转动）的同时，带动传动板5转动使顶杆6从传动板5上斜形凹槽顶出，进而顶开单向阀7，使阀座4被推离球体3，在阀座4被推离球体3之后，阀杆1端部已转动到阀杆端部与球体凹口间无间隙存在，这时再继续转动阀杆1就能在微扭矩状态下带动球体3转动，轻松打开阀门；
本发明的工作原理是：
一、打开球阀：转动球阀上的阀杆到一定角度，通常是1-5度时，安装在阀杆上的传动板跟着旋转1-5度，同时落于传动板斜形凹槽内的顶杆被顶出斜形凹槽，推动顶杆顶开单向阀。
打开单向阀，当单向阀打开后，阀门上游的压力通过单向阀进入储压腔体内，因储压腔体设计截面积大于阀座密封面的截面积，当储压腔体内的压力等于上游压力时阀座就会自动推出，使阀座和球体分离。
阀杆在转到5度时，阀杆方形段接触到球体，这时由于阀座密封面脱离球体，所以能在无扭矩或微扭矩状态下轻松转动阀杆旋转90度打开球阀。
二、关闭球阀：反向转动球阀上的阀杆，使顶杆尾部的定位凸头落入定位块的定位凹槽内，与此同时，顶杆尾端顶面也落于传动板凹槽内，这时单向阀的阀芯被阀弹簧推回，单向阀关闭，球阀也关闭。
三、无压力开启球阀：在上游无压力要开启球阀时，一当开始转动球体，阀座就被顶开，球体与阀座密封面无直接接触，达到在上游无压力开启球阀时，保护球面和阀座面之效果。
本发明的实施方式
工业实用性
序列表自由内容

Claims (8)

  1. 一种新型高压时微扭矩球阀，主要包括阀杆、连接体、球体、阀座和阀座推出机构，其特征在于所述的阀座推出机构包括带压时阀座推出机构和无压时阀座推出机构；
    所述的带压时阀座推出机构包括与阀杆连接的传动板、顶杆、独立的单向阀、下游油道、储压腔体和上游油道，单向阀安装于连接体内，储压腔体通过下游油道与单向阀的下游连通，单向阀的上游通过上游油道与管道上游连通；所述的单向阀由阀体和阀芯组成，所述的阀芯设于阀体内；
    储压腔体由阀座、储压腔体压板和连接体围成，储压腔体压板连接有固定板，顶杆安装于储压腔体压板和固定板上；
    传动板上设有凹槽，顶杆尾端设有顶面，传动板凹槽与顶杆顶面匹配，顶杆前端顶于单向阀下游端，顶杆左右运动控制单向阀启闭，顶杆尾端顶面落于传动板凹槽内时，单向阀关闭，顶杆尾端顶面脱离传动板凹槽，即被顶出时，单向阀开启；
    球体上安装有顶杆定位块，顶杆定位块上设有定位凹槽，顶杆尾端设有定位凸头，定位凹槽与定位凸头匹配，当顶杆尾部的定位凸头落入定位块的定位凹槽时，顶杆尾端顶面也落于传动板凹槽内，单向阀的阀芯被阀弹簧推回，单向阀关闭。
  2. 根据权利要求1所述的一种新型高压时微扭矩球阀，其特征在于所述的无压时阀座推出机构包括设于球体上的环形台阶，设于环形台阶上的斜形凹口、设于阀座外环端面上的斜形凸台、设于阀座和连接体之间的弹簧，设于阀座外环的密封圈，斜形凹口和斜形凸台匹配；球阀关闭状态下，阀座外环端面的斜形凸台落入斜形凹口内，阀座密封圈与球体贴合，阀门关闭密封；转动球体打开阀门叶，阀座斜形凸台离开球体斜形凹口，阀座被顶开，阀座密封圈与球体脱离。
  3. 根据权利要求1所述的一种新型高压时微扭矩球阀，其特征在于所述传动板为圆形板，传动板的中央为方形孔，传动板外圈边上设有斜形凹槽，对称的另一外圈边上也设有一个斜形凹槽。
  4. 根据权利要求1所述的一种新型高压时微扭矩球阀，其特征在于球体上下二端置于固定板内。
  5. 根据权利要求1所述的一种新型高压时微扭矩球阀，其特征在于储压腔体压板上设有微泄压通孔，该微泄压通孔与储油腔体连通。
  6. 根据权利要求1所述的一种新型高压时微扭矩球阀，其特征在于储压腔体的横截面积大于阀座密封圈截面积。
  7. 根据权利要求1所述的一种新型高压时微扭矩球阀，其特征在于所述的阀杆顶端设有方形插口段，传动板中央设有方形插孔，方形插口段与传动板的方形插孔匹配卡紧。
  8. 根据权利要求1所述的一种新型高压时微扭矩球阀，其特征在于所述球体上端设有方形凹口，阀杆顶端设有方形连接段，该方形连接段插于球体上部的方形凹口内；所述的方形连接段的四个面上分别切有一个斜面，该斜面使得阀杆顶端插于球体上部的方形凹口内后，阀杆与球体之间留有一定的转动间隙，该间隙保证了阀杆在一定角度内持续转动（球体不转动）的同时，带动传动板转动使顶杆从传动板上斜形凹槽顶出，进而顶开单向阀，使阀座被推离球体，在阀座被推离球体之后，阀杆端部已转动到阀杆端部与球体凹口间无间隙存在，这时再继续转动阀杆就能在微扭矩状态下带动球体转动，轻松打开阀门。
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CN108612875A (zh) * 2018-05-28 2018-10-02 南京航空航天大学 一种用于废金属破碎机的主被动结合的泄爆阀
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CN110553056A (zh) * 2019-09-30 2019-12-10 青田超越阀门有限公司 球面双向高性能旋转阀
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