CN203115121U - Automatic centering valve internal part adjusting valve - Google Patents
Automatic centering valve internal part adjusting valve Download PDFInfo
- Publication number
- CN203115121U CN203115121U CN 201320159524 CN201320159524U CN203115121U CN 203115121 U CN203115121 U CN 203115121U CN 201320159524 CN201320159524 CN 201320159524 CN 201320159524 U CN201320159524 U CN 201320159524U CN 203115121 U CN203115121 U CN 203115121U
- Authority
- CN
- China
- Prior art keywords
- valve
- automatic centering
- internal part
- spool
- seat
- 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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- Lift Valve (AREA)
Abstract
The utility model discloses an automatic centering valve internal part adjusting valve. The automatic centering valve internal part adjusting valve comprises a valve body, a valve seat, a valve core, a valve rod and a valve cap, the valve seat is fixed in a valve cavity of the valve body, and the valve rod drives the valve core to move vertically to achieve opening or closing of the valve. The automatic centering valve internal part adjusting valve is characterized in that the valve core and the valve rod are connected in a mutually-clamped mode, a T-shaped groove is formed in the top of the valve core, a T-shaped head is arranged at the bottom of the valve rod, the T-shaped head is movably inserted in the T-shaped groove, an anti-flushing platform is arranged on the periphery of an inlet of a circulation hole of the valve seat, a guide portion is arranged in the valve core, and a corresponding guide hole is formed in the valve cap. The automatic centering valve internal part adjusting valve solves the problems that centering performance of an adjusting valve internal part is poor, movement accuracy and movement precision of the valve core are effectively improved, and meanwhile, protection on a valve seat sealing face is improved.
Description
Technical field
The utility model relates to the modulating valve that a kind of trim can automatic centering.
Background technique
Traditional modulating valve, its valve rod is fixedlyed connected with spool, when the valve body internal pressure is higher, valve rod can be subjected to the scouring force of medium, produce distortion and vibrations, and that spool can occur is poorly sealed along with the skew of valve rod, the accuracy of valve core movement and kinematic accuracy variation; More situation is, the live axle of valve assembling back valve rod and final controlling element is not usually on same axis, existence is than mistake, after valve rod and live axle are connected and fixed, valve rod can produce certain deflection, not only influence the auto-flexibility of valve rod, also largely influence accuracy and the kinematic accuracy of valve core movement simultaneously, finally also can cause occurring poorly sealed.
Summary of the invention
In view of the problem that present known technology exists, the purpose of this utility model is to be to provide a kind of solution trim to neutrality difference problem, effectively improves accuracy and the kinematic accuracy of valve core movement, improves the modulating valve to the sealing surface of seat protection simultaneously.
The utility model is implemented by the following technical programs:
Automatic centering trim modulating valve, comprise valve body, valve seat, spool, valve rod and valve gap, valve seat is fixed in the valve pocket of valve body, valve rod drives spool and moves up and down opening or closing of realization valve, it is characterized in that: spool adopts with valve rod cassette is connected, the spool top is provided with T type groove, and stem bottom is provided with T-shape head, and the T-shape head activity is plugged in the T type groove.
In the above-mentioned technology, changed the design concept of original valve rod and spool one, valve rod and spool have adopted being dynamically connected to cassette, this Placement has realized the automatic centering of valve rod and spool, effectively improve accuracy and the kinematic accuracy of valve core movement, after spool and valve rod adopted and be dynamically connected, valve rod can the self-alignment along with the motion of spool when action, thereby effectively compensated the kinematic error of valve rod; When the valve body internal pressure was higher, valve rod can be subjected to the scouring force of medium, produced distortion and vibrations, and the effective compensating offset of spool realizes good sealing.
The opening import periphery of valve seat is provided with the protection against erosion platform.The protection against erosion platform can prevent effectively that medium from washing away sealing surface of seat, realizes the protection to sealing surface of seat.
Spool is provided with guide portion, and valve gap is provided with corresponding pilot hole.Pilot hole can play leading role to spool, has improved the kinematic accuracy of spool.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is structural representation of the present utility model.
Embodiment
Describe the relevant details of the utility model specific embodiment in detail below in conjunction with accompanying drawing:
As shown in the figure, automatic centering trim modulating valve of the present utility model, comprise valve body 7, valve seat 6, spool 4, valve rod 1 and valve gap 2, valve seat 6 is tightened in the valve pocket of valve body 7 by screw thread, valve rod 1 drives spool 4 and moves up and down opening or closing of realization valve, spool 4 adopts with valve rod 1 cassette is connected, spool 4 tops are provided with T type groove 9, valve rod 1 bottom is provided with T-shape head 8, T-shape head 8 activities are plugged in the T type groove 9, the opening import periphery of valve seat 6 is provided with protection against erosion platform 5, and spool 4 is provided with guide portion, and valve gap 2 is provided with corresponding pilot hole 3.
Claims (3)
1. automatic centering trim modulating valve, comprise valve body, valve seat, spool, valve rod and valve gap, valve seat is fixed in the valve pocket of valve body, valve rod drives spool and moves up and down opening or closing of realization valve, it is characterized in that: spool adopts with valve rod cassette is connected, the spool top is provided with T type groove, and stem bottom is provided with T-shape head, and the T-shape head activity is plugged in the T type groove.
2. automatic centering trim modulating valve as claimed in claim 1, it is characterized in that: the opening import periphery of valve seat is provided with the protection against erosion platform.
3. automatic centering trim modulating valve as claimed in claim 1, it is characterized in that: spool is provided with guide portion, and valve gap is provided with corresponding pilot hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159524 CN203115121U (en) | 2013-04-02 | 2013-04-02 | Automatic centering valve internal part adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320159524 CN203115121U (en) | 2013-04-02 | 2013-04-02 | Automatic centering valve internal part adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203115121U true CN203115121U (en) | 2013-08-07 |
Family
ID=48895469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320159524 Expired - Fee Related CN203115121U (en) | 2013-04-02 | 2013-04-02 | Automatic centering valve internal part adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203115121U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461507A (en) * | 2016-12-30 | 2017-12-12 | 郴州万墨环保科技有限公司 | A kind of self compensation vacuum valve |
-
2013
- 2013-04-02 CN CN 201320159524 patent/CN203115121U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461507A (en) * | 2016-12-30 | 2017-12-12 | 郴州万墨环保科技有限公司 | A kind of self compensation vacuum valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20140402 |