CN203189867U - Valve rod - Google Patents
Valve rod Download PDFInfo
- Publication number
- CN203189867U CN203189867U CN 201320194717 CN201320194717U CN203189867U CN 203189867 U CN203189867 U CN 203189867U CN 201320194717 CN201320194717 CN 201320194717 CN 201320194717 U CN201320194717 U CN 201320194717U CN 203189867 U CN203189867 U CN 203189867U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- rod body
- upper valve
- filler
- fastening device
- 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
Links
- 239000000945 filler Substances 0.000 abstract description 21
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model provides a valve rod. The valve rod is composed of an upper valve rod body and a lower valve rod body. The upper valve rod body is arranged inside a shaft hole of a connecting piece, the depth of the shaft hole is larger than the length of the upper valve rod body, the lower end of the upper valve rod body is provided with a shaft shoulder, a limiting fastening device is arranged outside the upper valve rod body, one end of the limiting fastening device is connected with the connecting piece in an abutting mode, the other end of the limiting fastening device is connected with the shaft shoulder at the lower end of the upper valve rod body in an abutting mode and the limiting fastening device can be disassembled radially. The lower valve rod body is arranged inside a valve body, and the upper valve rod body and the lower valve rod body are connected in a matching mode inside an inner cavity of a support through a connecting part. The valve rod has the advantages that due to the fact that the split-type valve rod is adopted, during online filler exchanging, the whole circle of filler can be exchanged, the filler does not need to be cut off and the service life of the filler is prolonged, operation space is large, operation reliability is improved, and sealing performance after repair is guaranteed.
Description
Affiliated technical field
The utility model relates to a kind of valve rod, particularly a kind of split type valve rod simple in structure.
Background technique
The valve of the band drive unit that use in present each field, its valve rod generally has two kinds of structural types, a kind of is integrated type, be that valve rod directly is connected with the driving component of drive unit, another kind is that valve rod is connected with the driving component of drive unit by coupling, and the sealing of valve rod generally adopts filler knot form to realize, behind the long-play, because the wearing and tearing of filler assembly cause the leakage at valve rod place, need in time to change filler assembly.And present two kinds of stem structure forms when changing filler under not pulling down the drive unit situation, need circumferentially be cut off filler, influenced the working life of filler, and the operating space are little, are difficult for guaranteeing maintenance back sealability.
Summary of the invention
For overcoming the existing above-mentioned defective of valve rod, the utility model provides a kind of split type valve rod, can realize during online replacing filler that whole circle changes, need not to cut off filler, prolonged the working life of filler, and the operating space is big, improve the reliability of operation, guaranteed the sealability after the maintenance.
The technological scheme that its technical problem that solves the utility model adopts is a kind of valve rod, valve rod is made up of upper valve rod and lower valve rod, upper valve rod is arranged in the axis hole of link, the degree of depth of axis hole is greater than the length of upper valve rod, the lower end of upper valve rod is provided with the shaft shoulder, upper valve rod is outside equipped with spacing securing means, one end of spacing securing means and link butt, the shaft shoulder butt of the other end and upper valve rod lower end, spacing securing means can radially split, lower valve rod is arranged in the valve body, and described upper and lower valve rod is connected by connected element in rack bore.
Connected element is flat tenon and flat tongue-and-groove, square tenon and square tongue-and-groove, key and keyway or spline and the spline that cooperatively interacts.
The beneficial effects of the utility model are to adopt split type valve rod, can realize during online replacing filler that whole circle changes, and need not to cut off filler, prolonged the working life of filler, and the operating space is big, has improved the reliability of operation, has guaranteed the sealability after the maintenance.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is embodiment's structural representation;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1.
Among Fig. 1,2,3: 1. link; 2. axis hole; 3. support; 4. upper valve rod; 5. spacing securing means; 6. the shaft shoulder; 7. square tenon; 8. bolt; 9. Gland; 10. lower valve rod; 11. filler; 12. valve body.
Embodiment
As Fig. 1,2, shown in 3, a kind of valve rod, valve rod is made up of upper valve rod 4 and lower valve rod 10, upper valve rod 4 is arranged in the axis hole 2 of link 1, the degree of depth of axis hole 2 is greater than the length of upper valve rod 4, the lower end of upper valve rod 4 is provided with the shaft shoulder 6, upper valve rod 4 is outside equipped with spacing securing means 5, one end of spacing securing means 5 and link 1 butt, the shaft shoulder 6 butts of the other end and upper valve rod 4 lower ends, thereby the axial float of restriction upper valve rod 4, spacing securing means 5 can radially split, and lower valve rod 10 is arranged in the valve body 12, and upper valve rod 4 is connected by connected element in the inner chamber of support 3 with lower valve rod 10, connected element can be for being separately positioned on the flat tenon that cooperatively interacts and the flat tongue-and-groove on upper valve rod 4 and the lower valve rod 10, side's tenon and square tongue-and-groove, key and keyway or spline and spline, the side's of being tenon 7 cooperates with square tongue-and-groove in the present embodiment.
Online replacing for the ease of filler, prolong the working life of filler, structure of the present utility model adopts split type, when changing filler 11, turn on and take out bolt 8, and a spacing securing means 5 that are installed in outside the upper valve rod 4 radially splits and takes off, upper valve rod 4 axially moves up in axis hole 2, make upper valve rod 4 and lower valve rod 10 break away from mutually, take out Gland 9 again, can carry out the whole circle of filler 11 and change, simple to operate and the operating space is big, improve the reliability of operation, guaranteed the sealability after the maintenance.
Claims (2)
1. valve rod, it is characterized in that: valve rod is made up of upper valve rod and lower valve rod, described upper valve rod is arranged in the axis hole of link, the degree of depth of described axis hole is greater than the length of upper valve rod, the lower end of described upper valve rod is provided with the shaft shoulder, described upper valve rod is outside equipped with spacing securing means, one end of described spacing securing means and link butt, the shaft shoulder butt of the other end and upper valve rod lower end, described spacing securing means can radially split, described lower valve rod is arranged in the valve body, and described upper and lower valve rod is connected by connected element in rack bore.
2. valve rod according to claim 1, it is characterized in that: described connected element is flat tenon and flat tongue-and-groove, square tenon and square tongue-and-groove, key and keyway or spline and the spline that cooperatively interacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320194717 CN203189867U (en) | 2013-04-18 | 2013-04-18 | Valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320194717 CN203189867U (en) | 2013-04-18 | 2013-04-18 | Valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189867U true CN203189867U (en) | 2013-09-11 |
Family
ID=49106727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320194717 Expired - Fee Related CN203189867U (en) | 2013-04-18 | 2013-04-18 | Valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189867U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465475A (en) * | 2016-01-08 | 2016-04-06 | 朱志强 | Movable fit leakage controller for valve |
| CN109737210A (en) * | 2019-01-24 | 2019-05-10 | 上海亚核阀业成套有限公司 | A kind of high-temperature molten salt pipeline valve |
-
2013
- 2013-04-18 CN CN 201320194717 patent/CN203189867U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465475A (en) * | 2016-01-08 | 2016-04-06 | 朱志强 | Movable fit leakage controller for valve |
| CN105465475B (en) * | 2016-01-08 | 2017-10-10 | 朱志强 | A kind of dynamic cooperation leakage controller for valve |
| CN109737210A (en) * | 2019-01-24 | 2019-05-10 | 上海亚核阀业成套有限公司 | A kind of high-temperature molten salt pipeline valve |
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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: 20130911 Termination date: 20190418 |