CN204372210U - A kind of valve rod with universal joint - Google Patents
A kind of valve rod with universal joint Download PDFInfo
- Publication number
- CN204372210U CN204372210U CN201420455932.0U CN201420455932U CN204372210U CN 204372210 U CN204372210 U CN 204372210U CN 201420455932 U CN201420455932 U CN 201420455932U CN 204372210 U CN204372210 U CN 204372210U
- Authority
- CN
- China
- Prior art keywords
- porcelain ring
- valve rod
- universal joint
- porcelain
- valve
- 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
A kind of valve rod with universal joint, the lower valve rod that it comprises upper valve rod and is made up of lower porcelain ring, porcelain ring seat, lower porcelain ring is embedded in porcelain ring seat upper end, a upper porcelain ring corresponding with lower porcelain ring is had at valve gap innermost insert, the corresponding face of two porcelain rings is burnishing surface, and the surface of contact of upper porcelain ring and lower porcelain ring is sealing surface, up and down respectively with a universal joint in the middle of porcelain ring seat, universal joint is above through upper valve rod connection valve door handle, and universal joint below connects spool through a driving lever.Design is unique, good operation; During changeover valve handle, universal joint valve rod rotates together with porcelain ring seat, porcelain ring seat is subject to the effect of hydrodynamic pressure, lateral force is produced to universal joint valve rod, continuous change angle, also change the conduction curve of universal joint valve rod simultaneously, under the acting in conjunction of sealing surface pressure and axial force, when opening, throttle down time accomplish to seal " wave " smooth pivotal; Gland does not need filler to coordinate, and can never leak yet.
Description
Technical field
The utility model relates to a kind of valve rod.
Background technique
The utility model is the significant improvement that the deficiency of " a kind of valve rod leak-proof structure " patent being 201010149169.5 according to the patent No. of the applicant's invention is made.Stem design is become two-part by former design, i.e. upper valve rod and lower valve rod; Lower valve rod is made up of lower porcelain ring and porcelain ring seat, and lower porcelain ring is embedded in porcelain ring seat upper end, has a triangle or quadrilateral groove, for being connected with upper valve rod in the middle of porcelain ring seat; Porcelain ring seat bottom is a triangle or quadrilateral cylinder, for being connected with the rotation groove on spool; Have a upper porcelain ring corresponding with lower porcelain ring at valve gap innermost insert, the corresponding face of two porcelain rings is burnishing surface, and the surface of contact of upper porcelain ring and lower porcelain ring is sealing surface; Upper valve rod upper end is through upper porcelain ring and valve gap connection valve door handle, and lower end is plugged in the groove of porcelain ring seat centre of lower porcelain ring; Valve spring is enclosed within the cylinder of porcelain ring seat bottom, is arranged between porcelain ring seat and spool.This valve rod leak-proof structure, operate light, cost is low, good seal performance, long service life, and the coefficient of waste is low; Upper valve rod valve use in no matter open, close time, can be extracted it out maintenance from valve body, to change conventional valves in use can not extract maintenance service out shortcoming to valve rod; This design is suitable for the valve with circulation and upper entering and lower leaving from top to bottom, and fluid force and spring force can be borrowed when throttle down jointly to reach the object of closely sealed porcelain facing.Its deficiency is: when handle rotation valve rod, and power exceedes fluid to the pressure resistance on lower valve rod porcelain hoop, and when overcoming fluid downwards to sealing ceramics rotational resistance sum, the function that valve just can complete unlatching, close.Due to valve handle-upper valve rod-lower valve rod-sealing ceramics, between them " hard power conduction " stir rotation, when power conduction is at each rotary part, all equal with the power contacted on closely sealed ceramics, now fluid is to sealing the pressure of porcelain facing also lower than valve rod torsion, porcelain facing sealing surface there will be " wave " contact, namely there will be a part at two sealing porcelain facings and fits instantaneously, the phenomenon of alternately fitting that another part is separated instantaneously.Now valve rod, valve gap go out to there will be seepage, and after valve rod stops operating, porcelain facing is under fluid matasomatism, recovers sealing state again.In use non-leakage for ensureing between valve rod and valve gap, also need again by filler give with the use of.
Summary of the invention
The purpose of this utility model is: design a kind of valve rod with universal joint, and to ensure to exert oneself in any case when rotary valve rod, by stem shaft to conduction, the power acted on sealing porcelain facing is all uniform, effectively overcomes prior art Problems existing.
Realizing the technological scheme that the utility model object takes is: the lower valve rod that it comprises upper valve rod and is made up of lower porcelain ring and porcelain ring seat, lower porcelain ring is embedded in porcelain ring seat upper end, a upper porcelain ring corresponding with lower porcelain ring is had at valve gap innermost insert, the corresponding face of two porcelain rings is burnishing surface, the surface of contact of upper porcelain ring and lower porcelain ring is sealing surface, in the centre of porcelain ring seat, a universal joint is set up and down respectively, universal joint is above through upper valve rod connection valve door handle, and universal joint below connects valve spool of valve through a driving lever.
Good effect of the present utility model is: design is unique, good operation; Utilize universal joint can the characteristic of curve conduction axis power, it can not only the powerful kinetic energy of curve conduction, while conduction axis power, can be received in the lateral force in certain angularity; During changeover valve handle, universal joint valve rod rotates together with porcelain ring seat, porcelain ring seat is subject to the effect of hydrodynamic pressure, produces lateral force to universal joint valve rod, because two closely sealed porcelain facings are that " wave " rotates, porcelain ring seat is also done " wave " simultaneously and is rotated, continuous change angle, also changes the conduction curve of universal joint valve rod simultaneously, under the acting in conjunction of sealing surface pressure and axial force, accomplish to seal " wave ", smooth pivotal when unlatching, throttle down; Through test of many times, gland does not need filler to coordinate, and can never leak yet.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model using state figure.
Embodiment
As shown in Figure 1, the lower valve rod that it comprises upper valve rod 1 and is made up of lower porcelain ring 5 and porcelain ring seat 6, lower porcelain ring 5 is embedded in porcelain ring seat 6 upper end, a upper porcelain ring 4 corresponding with lower porcelain ring 5 is had at valve gap 2 innermost insert, the corresponding face of two porcelain rings is burnishing surface, and upper porcelain ring 4 is sealing surface with the surface of contact of lower porcelain ring 5, and porcelain ring seat 6 is one certain thickness circular metal plate, lower porcelain ring 5 diameter is slightly less than circular metal plate diameter, is embedded in above circular metal plate; Arrange a universal joint 3,7 up and down respectively in the centre of porcelain ring seat 6, universal joint 3 above connects upper valve rod 1, and through connection valve door handle after valve gap 2, universal joint 7 below connects a driving lever 8, and driving lever 8 lower end is inserted in the supercentral jack of spool upper porcelain slice 9.Rotatable handle, upper valve rod 1 drives circular metal plate porcelain ring seat 6 to rotate through universal joint 3 above, and porcelain ring seat 6 drives driving lever 8 through universal joint 7 below, and driving lever 8 is with movable valve plug upper porcelain slice 8 to rotate, and completes opening and closing valve.Because two closely sealed porcelain facings are that " wave " rotates, porcelain ring seat 6 is also done " wave " simultaneously and is rotated, continuous change angle, also change the conduction curve of universal joint valve rod simultaneously, under the acting in conjunction of sealing surface pressure and axial force, accomplish to seal " wave ", smooth pivotal when unlatching, throttle down; Through test of many times, gland does not need filler to coordinate, and absolutely not leaks yet.
Claims (1)
1. the valve rod with universal joint, the lower valve rod that it comprises upper valve rod and is made up of lower porcelain ring, porcelain ring seat, lower porcelain ring is embedded in porcelain ring seat upper end, a upper porcelain ring corresponding with lower porcelain ring is had at valve gap innermost insert, the corresponding face of two porcelain rings is burnishing surface, the surface of contact of upper porcelain ring and lower porcelain ring is sealing surface, it is characterized in that: in the centre of porcelain ring seat, a universal joint is set up and down respectively, universal joint is above through upper valve rod connection valve door handle, and universal joint below connects valve spool of valve through a driving lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420455932.0U CN204372210U (en) | 2014-08-14 | 2014-08-14 | A kind of valve rod with universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420455932.0U CN204372210U (en) | 2014-08-14 | 2014-08-14 | A kind of valve rod with universal joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204372210U true CN204372210U (en) | 2015-06-03 |
Family
ID=53328432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420455932.0U Expired - Fee Related CN204372210U (en) | 2014-08-14 | 2014-08-14 | A kind of valve rod with universal joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204372210U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154258A (en) * | 2014-08-14 | 2014-11-19 | 陈建成 | Valve rod with cardan joints |
| CN107990047A (en) * | 2017-11-28 | 2018-05-04 | 南瑞集团有限公司 | A kind of irrigation control valve opening indicator for eliminating card resistance |
-
2014
- 2014-08-14 CN CN201420455932.0U patent/CN204372210U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154258A (en) * | 2014-08-14 | 2014-11-19 | 陈建成 | Valve rod with cardan joints |
| CN107990047A (en) * | 2017-11-28 | 2018-05-04 | 南瑞集团有限公司 | A kind of irrigation control valve opening indicator for eliminating card resistance |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20180814 |