CN203594841U - Hydraulic non-return device - Google Patents
Hydraulic non-return device Download PDFInfo
- Publication number
- CN203594841U CN203594841U CN201320821517.8U CN201320821517U CN203594841U CN 203594841 U CN203594841 U CN 203594841U CN 201320821517 U CN201320821517 U CN 201320821517U CN 203594841 U CN203594841 U CN 203594841U
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- CN
- China
- Prior art keywords
- oil pressure
- pressure circulation
- circulation cylinder
- valve body
- return device
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- 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 discloses a hydraulic non-return device. The hydraulic non-return device comprises a valve body, a movable sealing plug, an oil pressure circulation cylinder, a center support and a sliding plug center shaft. The lower end of the sliding plug center shaft is fixedly connected with the movable sealing plug, the upper end of the sliding plug center shaft is arranged in the oil pressure circulation cylinder and slides in the oil pressure circulation cylinder, and hydraulic oil is accommodated in the oil pressure circulation cylinder. A cover plate is arranged at the upper end of the valve body. Because the oil pressure circulation cylinder and the sliding plug center shaft are arranged in the valve body and the hydraulic oil is accommodated in the oil pressure circulation cylinder, return of the movable sealing plug can be better achieved through compression of the hydraulic oil, a good lubrication and scaling prevention effect can be achieved, and the problem that because a traditional non-return valve is open for a long time, a spring corrodes, rusts and does not have the non-return ability any more or is not tightly sealed is solved.
Description
Technical field
The utility model relates to a kind of stop valve, relates in particular to a kind of fluid power non-return device.
Background technique
Stop valve claims again pipe valve valve, belongs to forced seal formula valve, so in the time of valve closing, must exert pressure to flap, does not leak with forced seal face.In the time that medium enters valve by flap below, the required resistance overcoming of steering force, is the frictional force of valve rod and filler and the thrust being produced by the pressure of medium, and the power that the force rate of closing valve is opened valve is large, so it is large that the diameter of valve rod is wanted, otherwise can there is the fault of valve rod bending.Be divided into three kinds by Placement: flange connection, screwed connection, be welded to connect.From self-packing valve occurs, the MEDIA FLOW of stop valve enters valve pocket to just changing by flap top, and at this moment, under pressure medium effect, the power of closing valve is little, and it is large to open the power of valve, and the diameter of valve rod can correspondingly reduce.Meanwhile, under medium effect, the valve of this form is also tighter.Once regulation of China's valve " three changes are given ", the flow direction of stop valve, adopts from top to bottom without exception.When stop valve is opened, the Lift of flap, for nominal diameter 25%～30% time. flow has reached maximum, represents that valve has reached fully open position.So the fully open position of stop valve, should be decided by the stroke of flap.
Traditional safety check exists and may make spring rust corrosion lose non-return ability or the poorly sealed problem of non-return because not cutting out for a long time.
Model utility content
The purpose of this utility model is just to provide in order to address the above problem a kind of fluid power non-return device.
In order to achieve the above object, the utility model has adopted following technological scheme:
A kind of fluid power non-return device, comprise valve body, movable sealing plug, oil pressure circulation cylinder, center bearing bracket and sliding plug central shaft, the lower end of described sliding plug central shaft is fixedly connected with described movable sealing plug, the upper end of described sliding plug central shaft is arranged in described oil pressure circulation cylinder, and slide in described oil pressure circulation cylinder, in described oil pressure circulation cylinder, be provided with hydraulic oil.The upper end of described valve body is provided with cover plate.
Particularly, described center bearing bracket is arranged in described valve body, and the lower end of described oil pressure circulation cylinder is fixed on described center bearing bracket.
Further, on the both sides valve body of described sliding plug central shaft, be provided with liner.
The beneficial effects of the utility model are:
The utility model is a kind of fluid power non-return device, in valve body, be provided with oil pressure circulation cylinder and sliding plug central shaft, in oil pressure circulation cylinder, be provided with hydraulic oil, the compression energy of hydraulic oil better resets movable sealing plug, can play the effect of lubricated good antiscale property, solved traditional safety check and existed and may make spring rust corrosion lose non-return ability or the poorly sealed problem of non-return because not closing for a long time simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of fluid power non-return device of the utility model.
In figure: 1-valve body, 2-sealing seat, 3-movable sealing plug, 4-liner, the sliding plug of 5-central shaft, 6-center bearing bracket, 7-oil pressure circulation cylinder, 8-packing ring, 9-cover plate, 10-hydraulic oil.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model is a kind of fluid power non-return device, comprise valve body 1, movable sealing plug 3, oil pressure circulation cylinder 7, center bearing bracket 6 and sliding plug central shaft 5, the lower end of sliding plug central shaft 5 is fixedly connected with movable sealing plug 3, the upper end of sliding plug central shaft 5 is arranged in oil pressure circulation cylinder 7, and in the interior slip of oil pressure circulation cylinder 7, in oil pressure circulation cylinder 7, be provided with hydraulic oil 10.The upper end of valve body 1 is provided with cover plate 9.Center bearing bracket 6 is arranged in valve body 1, and the lower end of oil pressure circulation cylinder 7 is fixed on center bearing bracket 6.On the both sides valve body 1 of sliding plug central shaft 5, be provided with liner 4.Center bearing bracket 6 is provided with packing ring 8 with valve body 1 joint.
In valve body 1, be provided with oil pressure circulation cylinder 7 and sliding plug central shaft 5, in oil pressure circulation cylinder 7, be provided with hydraulic oil 10, the compression energy of hydraulic oil 10 better resets movable sealing plug 3, can play the effect of lubricated good antiscale property, solved traditional safety check and existed and may make spring rust corrosion lose non-return ability or the poorly sealed problem of non-return because not closing for a long time simultaneously.
Claims (4)
1. a fluid power non-return device, comprise valve body and movable sealing plug, it is characterized in that: also comprise oil pressure circulation cylinder and sliding plug central shaft, the lower end of described sliding plug central shaft is fixedly connected with described movable sealing plug, the upper end of described sliding plug central shaft is arranged in described oil pressure circulation cylinder, and slide in described oil pressure circulation cylinder, in described oil pressure circulation cylinder, be provided with hydraulic oil.
2. a kind of fluid power non-return device according to claim 1, is characterized in that: the upper end of described valve body is provided with cover plate.
3. a kind of fluid power non-return device according to claim 1, is characterized in that: described fluid power non-return device also comprises center bearing bracket, described center bearing bracket is arranged in described valve body, and the lower end of described oil pressure circulation cylinder is fixed on described center bearing bracket.
4. a kind of fluid power non-return device according to claim 1, is characterized in that: on the both sides valve body of described sliding plug central shaft, be provided with liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821517.8U CN203594841U (en) | 2013-12-12 | 2013-12-12 | Hydraulic non-return device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821517.8U CN203594841U (en) | 2013-12-12 | 2013-12-12 | Hydraulic non-return device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594841U true CN203594841U (en) | 2014-05-14 |
Family
ID=50675732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320821517.8U Expired - Fee Related CN203594841U (en) | 2013-12-12 | 2013-12-12 | Hydraulic non-return device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203594841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090570A (en) * | 2014-05-22 | 2015-11-25 | 欧洲技术设于伊特根的三聚氰氨-卢森堡-分支机构 | Improved flow vale and equipment comprising valve and used in production of melamine |
-
2013
- 2013-12-12 CN CN201320821517.8U patent/CN203594841U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090570A (en) * | 2014-05-22 | 2015-11-25 | 欧洲技术设于伊特根的三聚氰氨-卢森堡-分支机构 | Improved flow vale and equipment comprising valve and used in production of melamine |
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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: 20140514 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |