CN201434109Y - Ball valve stem - Google Patents
Ball valve stem Download PDFInfo
- Publication number
- CN201434109Y CN201434109Y CN2009200589932U CN200920058993U CN201434109Y CN 201434109 Y CN201434109 Y CN 201434109Y CN 2009200589932 U CN2009200589932 U CN 2009200589932U CN 200920058993 U CN200920058993 U CN 200920058993U CN 201434109 Y CN201434109 Y CN 201434109Y
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- ball
- cylindrical section
- valve stem
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a pipeline cut-off valve, in particular to a ball valve stem. The cylindrical section of the valve stem is provided with a valve stem axial positioning structure which leads the O-shaped seal ring of a valve stem end surface to produce pre-tightening force by being axially positioned with the valve. The valve stem axial positioning structure is a valve stem axial positioning and locking part which is locked and positioned with the valve; and the valve stem axial positioning and locking part is coaxial with the cylindrical section of the valve stem, and protrudes out of the same. Because the cylindrical section of the valve stem is provided with the valve stem axial positioning structure, the ball valve stem is positioned with the valve so as to limit the distance between the valve stem and a valve ball, so that the O-shaped seal ring with a sealed plane of the valve stem end surface is provided with pre-tightening force.
Description
Technical field
The utility model relates to pipeline cut-off valve, is specially a kind of ball valve valve rod.
Background technique
The ball-valve structure of prior art comprises parts such as valve body, valve ball, valve rod, valve thimble, the valve body both sides are provided with adapter, and valve ball is located at valve inner and is stretched out outside the valve body by valve rod, utilize the valve thimble rotation, make valve ball rotate thereby drive valve rod, realize the conducting that the valve body both sides are taken over and block.
Realize by following structure between valve rod, valve thimble, these three parts of valve body in the prior art: valve rod and valve thimble are realized fastening by button bit, and valve thimble is by button bit and valve body snapping, be provided with an end face in stem bottom, the seal ring of O shape is installed on this end face, corresponding on valve body, mill out one with the perpendicular plane of valve rod, button bit on the valve rod and the button bit on the valve thimble make valve rod keep the power of a suitable sensing valve body outside, make valve rod end face O-ring seals can form end face seal to valve rod with suitable impacting force.But this structure is to be positioned at three button bits on the part by two, reaches the design impacting force, brings big difficulty for manufacturing and assembling.
The model utility content
Content of the present utility model is to overcome the deficiencies in the prior art, designs a kind of ball valve valve rod of effective solution valve rod end face O-ring seals impacting force problem.
In order to realize above-mentioned technical purpose, the utility model comprises following technical characteristics: a kind of ball valve valve rod comprises valve ball slide block, valve rod end face sealing ring, end face seal plane, valve rod cylindrical section, valve rod torsion section; The valve ball slide block is positioned at the valve rod bottom; The valve rod end face sealing ring is and the cylinder ring of valve rod concentric that valve rod end face seal plane is positioned on the end face sealing ring, and vertical with valve rod axis; The valve rod cylindrical section is the external cylindrical surface coaxial with valve body, the axle center that is the valve rod cylindrical section is coaxial with valve rod axis, valve rod torsion section is positioned at valve stem tip, described valve rod cylindrical section is provided with and can carries out axially locating with valve body, makes valve rod end face seal plane produce the valve rod axial positioning structure of sealing impacting force.
Further, described valve rod axial positioning structure be realize to fasten the location with valve body stem shaft to the location button bit, stem shaft is to location button bit and valve rod cylindrical section concentric, and protrudes from the valve rod cylindrical section.
Further, described stem shaft is and the round platform of valve rod cylindrical section concentric that the round platform bottom surface is near end face sealing ring and the plane vertical with valve rod axis to the location button bit.
In order to realize being connected of valve rod and valve thimble, described valve rod torsion section is with the valve rod concentric, diameter is less than two parallel planes that are cut into along the valve rod axis direction on one section cylindrical body of valve rod cylindrical section, be used for cooperating, drive the valve ball rotation for moment of valve rod with torsion hole in the bonnet.
For fixing O shape sealer, convenient when making assembling, described end face seal plane is provided with the seal groove that is used to place O-ring seals.
The beneficial effects of the utility model are: since the valve rod cylindrical section be provided with by with the valve rod axial positioning structure, by this valve rod axial positioning structure, realize and the valve body location, thereby the restriction valve rod makes valve rod end face O-ring seals have impacting force towards the distance of valve ball direction.This structure Design has avoided in the prior art valve rod and valve thimble to realize fastening by button bit, and valve thimble is by button bit and valve body snapping, this structure that must realize designing impacting force by the button bit on three parts.Therefore valve rod of the present utility model is more convenient and swift when assembling, can effectively solve valve rod end face O-ring seals impacting force problem.
Description of drawings
Fig. 1 is the stereogram of the utility model valve rod;
Fig. 2 is the side view of the utility model valve rod;
Fig. 3 is assemblied in structural representation in the ball valve for the utility model valve rod.
Embodiment
As shown in Figure 1 and Figure 2, be stereogram, the side view of the utility model valve rod 2, described valve rod 2 is made of valve ball slide block 21, valve rod end face sealing ring 22, end face seal plane 23, valve rod cylindrical section 25, valve rod torsion section 26.Valve rod end face sealing ring 22 is a cylinder ring with valve rod 2 concentrics, and valve rod end face seal plane is positioned on the end face sealing ring 22, and with the axis normal of valve rod 2; Valve rod end face seal plane is provided with the O-ring seals fixed groove, and O-ring seals is fixed in the seal ring fixed groove.The valve rod torsion section 26 of described valve rod 2 for two parallel planes valve rod concentric, that diameter is cut into along the valve rod axis direction on less than one section cylindrical body of valve rod cylindrical section 25, be used for cooperating, drive the valve ball rotation for moment of valve rod with torsion hole in the bonnet.
The utility model is by valve rod and valve body location, produce the impacting force of O-ring seals, in order to realize this locating function, on valve rod cylindrical section 25, be provided with and the valve body axially locating, limit the distance of valve rod, thereby make valve rod end face O-ring seals produce the valve rod axial positioning structure of impacting force towards the valve ball direction.For the needs of realizing assembling, described valve rod axial positioning structure is a stem shaft to location button bit 24, and stem shaft realizes the location to location button bit 24 by fastening with valve body, and stem shaft is positioned on the valve rod cylindrical section 25 to location button bit 24, with cylindrical section 25 concentrics, and protrude from valve rod cylindrical section 25.The axially locating button bit is and the round platform of cylindrical section 25 concentrics that its maximum sole is near end face sealing ring 22, and the plane vertical with valve rod axis.Valve rod button bit on button bit 24 and the valve gap 4 is interlocked, and the restriction valve rod is towards the distance of valve ball direction.Stem shaft also can be the groove of being located on the valve rod cylindrical section 25 to location button bit 24, fastens to protrude to be located on the valve body.When assembling, the valve rod plug-in mounting goes out valve body, as long as exert oneself a little, stem shaft is fastened to location button bit 24 and valve body realize the location.
Fig. 3 is assemblied in structural representation in the ball valve for the utility model valve rod.Ball valve made of plastic is made of valve thimble 1, valve rod 2, O-ring seals 3, valve body 4, valve ball 5, adapter 6.When packing valve rod into, the axial limiting button bit on the valve gap of valve rod 2 and valve body 4 is interlocked, realizes O-ring seals 3 compressed the realization sealing function.Valve rod 2 top socket joints have valve thimble 1, and valve rod 2 bottoms are connected with valve ball 5, and valve body 4 both sides are provided with takes over 6, valve ball 5 is located at valve body 4 inside and is stretched out outside the valve body 4 by valve rod 2, utilize valve thimble 1 rotation, make valve ball 5 rotate, realize the conducting that the valve body both sides are taken over and block thereby drive valve rod 2.
Claims (5)
1, a kind of ball valve valve rod comprises valve ball slide block (21), valve rod end face sealing ring (22), end face seal plane (23), valve rod cylindrical section (25), valve rod torsion section (26);
Valve ball slide block (21) is positioned at the valve rod bottom; Valve rod end face sealing ring (22) is the axle center cylinder ring coaxial with valve rod axis, and valve rod end face seal plane (23) is positioned on the end face sealing ring (22), and vertical with valve rod axis; Valve rod cylindrical section (25) is the axle center external cylindrical surface coaxial with valve rod axis, and valve rod torsion section (26) is positioned at valve stem tip, it is characterized in that:
Described valve rod cylindrical section (25) is provided with the valve rod axial positioning structure that the valve body with ball valve is interlockingly connected.
2, ball valve valve rod according to claim 1, it is characterized in that described valve rod axial positioning structure is for realizing fastening the stem shaft of location to location button bit (24) with valve body, stem shaft and protrudes from valve rod cylindrical section (25) to location button bit (24) and valve rod cylindrical section (25) concentric.
3, ball valve valve rod according to claim 2 is characterized in that described stem shaft is and the round platform of valve rod cylindrical section (25) concentric that the round platform bottom surface is near end face sealing ring (22) and the plane vertical with valve rod axis to location button bit (24).
4, according to each described ball valve valve rod of claim 1~3, it is characterized in that described valve rod torsion section (26) is for the valve rod concentric, diameter is less than two parallel planes that are cut into along the valve rod axis direction on one section cylindrical body of valve rod cylindrical section (25), be used for cooperating, drive the valve ball rotation for moment of valve rod with torsion hole in the bonnet.
5,, it is characterized in that end face seal plane (23) is provided with the seal groove that is used to place O-ring seals according to each described ball valve valve rod of claim 1~3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009200589932U CN201434109Y (en) | 2009-06-23 | 2009-06-23 | Ball valve stem |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009200589932U CN201434109Y (en) | 2009-06-23 | 2009-06-23 | Ball valve stem |
Publications (1)
Publication Number | Publication Date |
---|---|
CN201434109Y true CN201434109Y (en) | 2010-03-31 |
Family
ID=42052917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2009200589932U Expired - Fee Related CN201434109Y (en) | 2009-06-23 | 2009-06-23 | Ball valve stem |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN201434109Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103398048A (en) * | 2013-07-24 | 2013-11-20 | 上海舒艾化过程控制有限公司 | Guide shaft for limit switch of pneumatic actuator |
-
2009
- 2009-06-23 CN CN2009200589932U patent/CN201434109Y/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103398048A (en) * | 2013-07-24 | 2013-11-20 | 上海舒艾化过程控制有限公司 | Guide shaft for limit switch of pneumatic actuator |
CN103398048B (en) * | 2013-07-24 | 2017-02-08 | 上海舒艾化过程控制有限公司 | Guide shaft for limit switch of pneumatic actuator |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20150623 |
|
EXPY | Termination of patent right or utility model |