CN203395287U - Check valve structure - Google Patents
Check valve structure Download PDFInfo
- Publication number
- CN203395287U CN203395287U CN201320347324.3U CN201320347324U CN203395287U CN 203395287 U CN203395287 U CN 203395287U CN 201320347324 U CN201320347324 U CN 201320347324U CN 203395287 U CN203395287 U CN 203395287U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- check valve
- valve structure
- rocking bar
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model provides a check valve structure, which comprises a valve body, a medium channel positioned inside the valve body, a valve core positioned at the center of the medium channel, and a valve cover arranged at the upper part of the valve body in a covered way, wherein a rocker is arranged at the bottom end of the valve cover and the center of the upper part of the valve core. The check valve structure is characterized in that one end of the rocker is propped against the lower bottom surface of the valve cover, and the other end of the rocker is fixedly arranged on the valve core; the outer surface of the valve core is in a smooth streamline shape, and the cross section of the valve core gradually reduces along the flow direction of fluid. According to the check valve structure provided by the utility model, based on the venturi principle in fluid dynamics, through fluid analysis, by using a smooth streamline geometrical design, the pressure loss can be minimized and the stroke is reduced, the flow resistance is effectively reduced, and the check function can be realized.
Description
Technical field
The utility model relates to valve mechanism, is specifically related to a kind of check valve structure.
Background technique
Safety check refers to and relies on medium itself to flow and automatic open and close spool, is used for preventing the valve that medium flows backwards, and claims again check valve, one-way valve, reflux valve or back pressure valve.The effect of such valve is only to allow medium to flow to a direction, and stops reverse flow.But this valve is easy to inclination under the impact of refluence liquid, causes the sealing surface of spool and valve seat to be misfitted, in easily producing, the vestige of leakage and rigid shock, causes sealing surface to destroy, and non-return performance is affected but also may incurs loss economically.
Model utility content
The utility model completes in order to solve deficiency of the prior art; the purpose of this utility model is to provide a kind of check valve structure; the sealing surface that it is simple in structure, valve is not easy inclination, spool and valve seat under the impact of refluence liquid coincide relatively good, protects preferably sealing surface, improves the performance of safety check and extend its working life.
The technical solution of the utility model is:
A kind of check valve structure, comprise valve body, be positioned at valve inner medium channel, be positioned at the spool of described medium channel middle position and be covered on the valve gap on described valve body top, the bottom of valve gap and described spool center upper portion position are provided with rocking bar, it is characterized in that: one end contact of described rocking bar is on the bottom surface of described valve gap, and the other end of described rocking bar is fixed on described spool; The outer surface of described spool is smooth streamlined; The cross-section area of described spool reduces along fluid flow direction gradual change.
Further, the technical solution of the utility model can also be:
The afterbody of described spool is provided with empennage; Described empennage rotates under hydrodynamic pressure centered by the central shaft of described spool, and its sense of rotation is perpendicular to the flow direction of fluid.
Described empennage comprises 3 or 5 rotation blades.
Described spool is provided with Self-centering device, and the other end of described rocking bar is fixed on described Self-centering device.
Check valve structure of the present utility model, the Venturi principle based in fluid mechanics, through fluid analysis, adopts smooth streamline geometry design, the pressure loss can be dropped to minimum and reduce stroke, effectively reduces flow resistance, realizes check function.
Accompanying drawing explanation
Fig. 1 is the structural representation of check valve structure of the present utility model.
Description of reference numerals
1, valve gap 2, spool 3, valve seat 4, rocking bar 5, empennage 6, valve body 7, medium channel 8, Self-centering device
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Of the present utility model a kind of check valve structure as shown in Figure 1, comprise be positioned at valve inner medium channel 7, be positioned at the spool 2 of medium channel middle position and be covered on the valve gap 1 on valve body top, the bottom of valve gap and spool center upper portion position are provided with rocking bar 4, one end contact of rocking bar is on the bottom surface of valve gap, and the other end of rocking bar is fixed on spool; The outer surface of spool is smooth streamlined; The cross-section area of spool reduces along fluid flow direction gradual change.
In check valve structure of the present utility model, the afterbody of spool is provided with empennage 5; Empennage rotates under hydrodynamic pressure centered by the central shaft of spool, and its sense of rotation is perpendicular to the flow direction of fluid.
Empennage of the present utility model comprises 3 or 5 rotation blades.
Spool of the present utility model is provided with Self-centering device 8, and the other end of rocking bar is fixed on Self-centering device.Rocking bar can adopt the aperture of controllable type structure adjusting valve door.
Working principle of the present utility model is:
When fluid flows through, reach after the cracking pressure of spool, valve is opened automatically, fluid is through the adjusting of spool and empennage, the flow velocity of fluid is reduced, equipment after protection safety check, empennage blade is installed in the design of spool additional after valve, make flow when reducing suddenly valve in closing process, effectively reduce the impact of spool to valve seat, avoid sealing surface of seat to be destroyed, prevent from causing valve seat leakage, guaranteeing that valve had compared with long working life is unlikely to damage, when valve needs fine adjustment, also can install control gear additional, make valve possess the ability that can accurately control fluid.
Check valve structure of the present utility model, the Venturi principle based in fluid mechanics, through fluid analysis, adopts smooth streamline geometry design, the pressure loss can be dropped to minimum and reduce stroke, effectively reduces flow resistance, realizes check function.
Above-mentionedly only the specific embodiment of the utility model is illustrated; but can not be as protection domain of the present utility model; every equivalence of having done according to the design spirit in the utility model changes or modifies, and all should think and fall into protection domain of the present utility model.
Claims (4)
1. a check valve structure, comprise valve body, be positioned at valve inner medium channel, be positioned at the spool of described medium channel middle position and be covered on the valve gap on described valve body top, the bottom of valve gap and described spool center upper portion position are provided with rocking bar, it is characterized in that: one end contact of described rocking bar is on the bottom surface of described valve gap, and the other end of described rocking bar is fixed on described spool; The outer surface of described spool is smooth streamlined; The cross-section area of described spool reduces along fluid flow direction gradual change.
2. a kind of check valve structure according to claim 1, is characterized in that: the afterbody of described spool is provided with empennage; Described empennage rotates under hydrodynamic pressure centered by the central shaft of described spool, and its sense of rotation is perpendicular to the flow direction of fluid.
3. a kind of check valve structure according to claim 2, is characterized in that: described empennage comprises 3 or 5 rotation blades.
4. a kind of check valve structure according to claim 3, is characterized in that: described spool is provided with Self-centering device, and the other end of described rocking bar is fixed on described Self-centering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320347324.3U CN203395287U (en) | 2013-06-18 | 2013-06-18 | Check valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320347324.3U CN203395287U (en) | 2013-06-18 | 2013-06-18 | Check valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203395287U true CN203395287U (en) | 2014-01-15 |
Family
ID=49906820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320347324.3U Withdrawn - After Issue CN203395287U (en) | 2013-06-18 | 2013-06-18 | Check valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203395287U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277542A (en) * | 2013-06-18 | 2013-09-04 | 苏州德兰能源科技有限公司 | Check valve structure |
-
2013
- 2013-06-18 CN CN201320347324.3U patent/CN203395287U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277542A (en) * | 2013-06-18 | 2013-09-04 | 苏州德兰能源科技有限公司 | Check valve structure |
| CN103277542B (en) * | 2013-06-18 | 2016-01-20 | 苏州德兰能源科技股份有限公司 | A kind of check valve structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 215000 Suzhou Lake Industrial Park, Xiangcheng District Economic Development Zone, Jiangsu Patentee after: SUZHOU DELAN ENERGY SCIENCE & TECHNOLOGY CORP., LTD. Address before: Cao Hu Industrial Park of Xiangcheng Economic Development Zone, Suzhou City, Jiangsu province 215000 Patentee before: Suzhou Delan Energy Technology Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20160120 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |