CN203784328U - Novel locating structure of adjusting valve rod - Google Patents
Novel locating structure of adjusting valve rod Download PDFInfo
- Publication number
- CN203784328U CN203784328U CN201320738995.2U CN201320738995U CN203784328U CN 203784328 U CN203784328 U CN 203784328U CN 201320738995 U CN201320738995 U CN 201320738995U CN 203784328 U CN203784328 U CN 203784328U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- spool
- valve
- section
- locating
- 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 - Lifetime
Links
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
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- Sliding Valves (AREA)
Abstract
The utility model relates to a novel locating structure of an adjusting valve rod. The locating structure comprises a valve element, the valve rod and a cylindrical pin. When the valve element and the valve rod are assembled, the outer threads of the valve rod are screwed into the inner threads of the valve element, and a valve rod locating step face and a valve element locating step face are tightly connected side by side. A valve rod locating cylindrical section and a valve element locating hole section are located in a matched mode. A valve rod matching pin cylindrical section enters a valve element matching pin light hole section. Then, the cylindrical pin is arranged at the valve rod matching pin cylindrical section in a matched mode. According to the novel locating structure, the valve rod and the valve element can be tightly assembled together, and higher anti-loosening capacity is achieved. Meanwhile, the assembling locating coaxiality of the valve rod and the valve element is improved, valve rod strength is enhanced, the probability of breaking of the valve rod and the cylindrical pin is lowered, the fact that an adjusting valve works stably is guaranteed, and the service life of the adjusting valve is prolonged.
Description
Technical field
The utility model relates to a kind of Novel positioning structure, the location that is applicable to regulation valve core and valve rod be connected.
Background technique
At present, regulation valve core and valve rod are threaded connection conventionally, then join and beat straight pin to valve core valve stem.Be specially on spool and process step hole, in the outer part one section is spool positioning hole section, and another section is spool internal thread.After assembling, valve rod screws in spool internal thread, and valve rod setting circle shell of column enters in the unthreaded hole of spool positioning hole section and locates, then on valve core valve stem setting circle shell of column, joins and beat straight pin and make valve rod anti-rotation locking.
But there is following defect in this structure:
1, spool, valve rod coaxality aspect are to locate by the unthreaded hole of spool, valve rod setting circle shell of column, but valve rod and unthreaded hole exist gap, can impact valve rod and spool coaxality like this, and then affect valve seal performance;
2,, between valve rod and spool, by valve rod positioning table terrace and spool positioning table terrace location and also tight, because locating face is positioned at hole, space is less, is not easy to processing;
3, join dozen straight pin position and be positioned at valve rod setting circle shell of column or valve rod outside thread place, seriously undermine valve rod intensity, make valve during the course, be more prone to the serious problems such as valve stem crack.
Summary of the invention
The utility model object is to overcome the deficiencies in the prior art, provide one can guarantee modulating valve operation steady in a long-term, reduce valve core valve stem coaxality and realize difficulty, strengthen valve rod intensity, a kind of regulating valve rod Novel positioning structure of anti-shotpin and valve stem crack.
The technological scheme providing according to the utility model, a kind of regulating valve rod Novel positioning structure comprises spool, valve rod and straight pin; Described spool is provided with step hole; Described step hole comprises spool positioning table terrace, spool positioning hole section, spool internal thread and four regions of spool distribution unthreaded hole section; Described valve rod comprises valve rod positioning table terrace, valve rod setting circle shell of column, valve rod outside thread and four regions of valve rod distribution cylindrical section; When spool and valve rod assembling, valve rod screws into spool internal thread, valve rod positioning table terrace and spool positioning table terrace stressed joint; Valve rod setting circle shell of column coordinates location with spool positioning hole section, and valve rod distribution cylindrical section enters in spool distribution unthreaded hole section, then straight pin is joined and beaten at valve rod distribution cylindrical section place.
As further improvement of the utility model, described valve rod positioning table terrace upper end is provided with band tang step.
As further improvement of the utility model, on described valve rod, be with flat step and spool top end face location and and tight.
As further improvement of the utility model, described threaded stem front end has one section of cylinder polished rod, and straight pin pin-and-hole is arranged on this cylinder polished rod.
Compared with the prior art the utility model has the following advantages:
1, on valve rod positioning table terrace, be with tang step, and spool top end face is easier to be also tight, stem shaft, to being located, has ensured the accurate of valve rod and the rear overall length of spool assembling simultaneously.
2, valve rod is topped bar and spool top end face plane positioning, has avoided the rear coaxality of valve rod spool assembling of the loosening impact producing because of valve rod location polished rod and the intersegmental gap of spool location unthreaded hole poor.
3, valve rod positioning table terrace and spool positioning table terrace tight, can make valve rod setting circle shell of column place's diameter and the externally threaded diameter of valve rod poor less, relatively increased screw thread latus rectum, improved valve rod bulk strength, extended modulating valve working life.
4, valve rod distribution cylindrical section is used for joining dozen locking straight pin of anti-rotation, need not beat the valve rod setting circle shell of column place above valve rod place screw thread or screw thread, has avoided thus because of the impact of pin-and-hole on valve rod intensity.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural drawing of the spool in Fig. 1.
Fig. 3 is the structural drawing of valve rod in Fig. 1.
Embodiment
Below in conjunction with instantiation, the invention will be further described.
As shown in Figure 1, comprise spool 1, valve rod 2 and straight pin 3.
As shown in Figure 2, described spool 1 is provided with step hole; Described step hole comprises spool positioning table terrace 4, spool positioning hole section 5, spool internal thread 6 and 7 four regions of spool distribution unthreaded hole section.
As shown in Figure 3, valve rod 2 comprises valve rod positioning table terrace 8, valve rod setting circle shell of column 9, valve rod outside thread 10 and 11 4 regions of valve rod distribution cylindrical section.When spool 1 and valve rod 2 assemble, use and be threaded, valve rod outside thread 10 screws in spool internal thread 6, pull the band tang step on valve rod positioning table terrace 8 with spanner, make spool 1 and valve rod 2 stressed joint, be i.e. valve rod positioning table terrace 8 and spool positioning table terrace 4 stressed joint; At this moment, valve rod setting circle shell of column 9 coordinates location with spool positioning hole section 5, and valve rod distribution cylindrical section 11 enters in spool distribution unthreaded hole section 7, then straight pin 3 is joined and beaten at valve rod distribution cylindrical section 11 places.
The utility model can be assembled together valve rod and spool more tightly, and has stronger anti-loose ability.Meanwhile, improve valve rod and spool assembling and positioning coaxality, strengthened valve rod intensity, reduced the possibility of valve rod and straight pin fracture, ensured more stable operation of modulating valve, extended the working life of modulating valve.
Claims (2)
1. a regulating valve rod Novel positioning structure, comprises spool (1), valve rod (2), it is characterized in that: also comprise straight pin (3); Described spool (1) is provided with step hole; Described step hole comprises spool positioning table terrace (4), spool positioning hole section (5), spool internal thread (6) and (7) four regions of spool distribution unthreaded hole section; Described valve rod (2) comprises valve rod positioning table terrace (8), valve rod setting circle shell of column (9), valve rod outside thread (10) and (11) four regions of valve rod distribution cylindrical section; When spool (1) and valve rod (2) assembling, valve rod outside thread (10) screws in spool internal thread (6), valve rod positioning table terrace (8) and spool positioning table terrace (4) stressed joint; Valve rod setting circle shell of column (9) coordinates location with spool positioning hole section (5), and valve rod distribution cylindrical section (11) enters in spool distribution unthreaded hole section (7), then straight pin (3) is joined to beat and locate at valve rod distribution cylindrical section (11); Described valve rod positioning table terrace (8) upper end is provided with band tang step.
2. a kind of regulating valve rod Novel positioning structure as claimed in claim 1, is characterized in that: described valve rod (2) screw thread front end has one section of cylinder polished rod, and straight pin pin-and-hole is arranged on cylinder polished rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738995.2U CN203784328U (en) | 2013-11-20 | 2013-11-20 | Novel locating structure of adjusting valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738995.2U CN203784328U (en) | 2013-11-20 | 2013-11-20 | Novel locating structure of adjusting valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784328U true CN203784328U (en) | 2014-08-20 |
Family
ID=51320516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320738995.2U Expired - Lifetime CN203784328U (en) | 2013-11-20 | 2013-11-20 | Novel locating structure of adjusting valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784328U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081231A (en) * | 2019-04-28 | 2019-08-02 | 常州思源电力设备有限公司 | A kind of valve rod and its preparation process |
| CN112283571A (en) * | 2020-11-16 | 2021-01-29 | 常州艾肯智造科技有限公司 | Float ball type drain valve rod and double-valve core assembly |
| CN113474584A (en) * | 2020-01-31 | 2021-10-01 | 株式会社石崎 | Check valve |
-
2013
- 2013-11-20 CN CN201320738995.2U patent/CN203784328U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081231A (en) * | 2019-04-28 | 2019-08-02 | 常州思源电力设备有限公司 | A kind of valve rod and its preparation process |
| CN113474584A (en) * | 2020-01-31 | 2021-10-01 | 株式会社石崎 | Check valve |
| US11828373B2 (en) | 2020-01-31 | 2023-11-28 | Ishizaki Co., Ltd. | Check valve |
| CN112283571A (en) * | 2020-11-16 | 2021-01-29 | 常州艾肯智造科技有限公司 | Float ball type drain valve rod and double-valve core assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |
|
| CX01 | Expiry of patent term |