CN202256379U - Backflow-preventing visual flow indicator - Google Patents
Backflow-preventing visual flow indicator Download PDFInfo
- Publication number
- CN202256379U CN202256379U CN2011203854852U CN201120385485U CN202256379U CN 202256379 U CN202256379 U CN 202256379U CN 2011203854852 U CN2011203854852 U CN 2011203854852U CN 201120385485 U CN201120385485 U CN 201120385485U CN 202256379 U CN202256379 U CN 202256379U
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- China
- Prior art keywords
- valve
- impeller
- seat
- valve body
- valve seat
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides a backflow-preventing visual flow indicator comprising a valve body, a gland, an impeller, an impeller seat, and glass; wherein the impeller is fixedly arranged in a valve body channel through the impeller seat, two sides of the impeller seat are provided with the glass, and the impeller seat is fixed on the valve body through the gland; the valve body is also provided with a valve seat therein, the valve seat is provided with a through hole at a position connected with a right-side channel; the valve seat is fixed in the valve body through a valve cover, the valve seat is provided with a valve core therein, an end part of the valve core can stretch into a hole of a boss of the valve cover to slide up and down; springs are provided between steps of the valve core and a lower end face of the valve cover, positions between the valve seat and the valve body and between the valve seat and the valve cover are sealed through sealing gaskets; and an offset is provided between an axis of the impeller and a center line of the valve body channel. The backflow-preventing visual flow indicator of the utility model has the beneficial effects of effectively preventing backflow of medium, simple structure, small installation space, and flexible rotation of the impeller in the case of a low flow rate.
Description
Technical field
The utility model relates to a kind of pipeline flow indicating device, particularly relates to a kind of visual flow director with the anti-medium refluence of impeller.
Background technology
Use visual flow director at present in the pipeline use of industries such as municipal administration, metallurgy, nuclear power; All do not prevent the function that medium flows backwards; And some using system technological requirement does not allow medium to flow backwards, and at the front end of visual flow director a non-return valve is installed in addition usually, realizes the function that prevents that medium from flowing backwards; Owing to receive the restriction of installing space, inconvenient installation.
Summary of the invention
Can not prevent the deficiency that medium flows backwards in order to overcome existing visual flow director, the utility model provides a kind of anti-backflow visual flow director.
It is the visual flow director of a kind of anti-backflow that the utility model solves the technical scheme that its technical matters adopted, and comprises valve body, gland, impeller, impeller base, glass, and impeller is fixedly mounted in the valve channel through impeller base; Glass is equipped with in the impeller base both sides, is fixed on the valve body through gland, and a valve seat also is housed in the valve body; Have a through hole with the right channel junction on the valve seat; Valve seat is fixed in the valve body through valve gap, and spool is housed in the valve seat, and the end of spool can be stretched in the hole of boss of valve gap and slide up and down; Between the step of spool and valve gap lower surface, spring is housed also, valve seat and valve body, valve cover chamber are through the sealing gasket sealing.
The axis of impeller and valve channel center line have a side-play amount.
The beneficial effect of the utility model is to prevent that effectively medium from flowing backwards, and simple in structure, installing space is little, and impeller also rotates when low discharge flexibly.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the structural map of present embodiment
Fig. 2 is the vertical view of Fig. 1
Among the figure: 1. valve gap; 2. valve seat; 3. spring; 4. spool; 5. valve body; 6. sealing gasket; 7. impeller; 8. impeller base; 9. glass; 10, gland.
Embodiment
As depicted in figs. 1 and 2; The visual flow director of a kind of anti-backflow comprises valve body 5, gland 10, impeller 7, impeller base 8, glass 9, and impeller 7 is fixedly mounted in the passage of valve body 5 through impeller base 8; Glass 9 is equipped with in impeller base 8 both sides; Be fixed on the valve body 5 through gland 10, see through the rotation situation that glass 9 is observed impeller 7, can conveniently know the mobility status of pipeline medium.One valve seat 2 also is housed in the valve body 5; Have a through hole with the right channel junction on the valve seat 2; Valve seat 2 is fixed in the valve body 5 through valve gap 1, and spool 4 is housed in the valve seat 5, and the end of spool 4 can be stretched in the hole of boss of valve gap 1 and slide up and down; Between the lower surface of the step of spool 4 and valve gap 1, spring 3 is housed also, 1 of valve seat 2 and valve body 5, valve gap are through sealing gasket 6 sealings.The axis of impeller 7 and valve body 5 channel centerlines have a side-play amount, can when low discharge, rotate flexibly by impeller 7.
During work, medium gets into from the left end passage, overcomes the weight of spool 4 and the acting force of spring 3, backs down spool 4, from the hole on valve seat 2 right sides, flows to impeller 7, impeller 7 rotations; When the medium refluence took place, medium got into from valve body 5 right-hand member passages, and under the effect of medium power and spring 3 acting forces, spool 4 moves down, and compresses valve seat 2, realized sealing, can effectively prevent the refluence of medium.
Claims (2)
1. the visual flow director of anti-backflow comprises valve body, gland, impeller, impeller base, glass, and impeller is fixedly mounted in the valve channel through impeller base; Glass is equipped with in the impeller base both sides, is fixed on the valve body through gland, it is characterized in that: a valve seat also is housed in the described valve body; Have a through hole with the right channel junction on the valve seat; Valve seat is fixed in the valve body through valve gap, and spool is housed in the valve seat, and the end of spool can be stretched in the hole of boss of valve gap and slide up and down; Between the step of spool and valve gap lower surface, spring is housed also, valve seat and valve body, valve cover chamber are through the sealing gasket sealing.
2. the anti-down visual flow director of falling according to claim 1, it is characterized in that: the axis of described impeller and valve channel center line have a side-play amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203854852U CN202256379U (en) | 2011-09-30 | 2011-09-30 | Backflow-preventing visual flow indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203854852U CN202256379U (en) | 2011-09-30 | 2011-09-30 | Backflow-preventing visual flow indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256379U true CN202256379U (en) | 2012-05-30 |
Family
ID=46117598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203854852U Expired - Fee Related CN202256379U (en) | 2011-09-30 | 2011-09-30 | Backflow-preventing visual flow indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202256379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032609A (en) * | 2011-09-30 | 2013-04-10 | 江苏神通阀门股份有限公司 | Anti-backflow visible flow indictor |
-
2011
- 2011-09-30 CN CN2011203854852U patent/CN202256379U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032609A (en) * | 2011-09-30 | 2013-04-10 | 江苏神通阀门股份有限公司 | Anti-backflow visible flow indictor |
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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: 20120530 Termination date: 20190930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |