CN202418599U - Pressure balancing check valve - Google Patents
Pressure balancing check valve Download PDFInfo
- Publication number
- CN202418599U CN202418599U CN201120443193XU CN201120443193U CN202418599U CN 202418599 U CN202418599 U CN 202418599U CN 201120443193X U CN201120443193X U CN 201120443193XU CN 201120443193 U CN201120443193 U CN 201120443193U CN 202418599 U CN202418599 U CN 202418599U
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- valve body
- check valve
- utility
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model discloses a pressure balancing check valve which comprises a valve body (1), wherein the valve body is provided with a medium passage; a valve flap (2) is arranged on the sealing surface of the valve body (1); the valve flap (2) is connected with the lower end of a valve rod (10); the inside diameter of a cylinder sleeve (5) and the external circle of a welding sleeve on the valve flap (2) are sealed by adopting O-shaped sealing rings; and the valve flap (2) is provided with a through hole which deviates from the axis in the axial direction. The utility model has the advantages that the check valve is reasonable in structural design, the working pressure difference of the upper and lower ends of the valve flap is effectively eliminated, the switching torque is greatly reduced, and the check valve is suitable for high-pressure and large-caliber valves and has long service life.
Description
Technical field
The utility model relates to valve, relates in particular to a kind of pressure balance type stop valve.
Background technique
At present, stop valve has been widely used in industries such as electric power, waterpower, chemical industry, oil refining, metallurgy.The medium channel of existing stop valve is generally the pressure non-equilibrium structure in upstream extremity and the downstream of flap, during unlatching its MEDIA FLOW by the low side inflow of sealing surface, behind sealing surface from high-end outflow; Like this, during valve closing, it is poor that very big pressure medium is being born at the two ends up and down of flap; Produced very big upwards unbalanced force thus, made the valve closing difficulty, even can not seal; High pressure, heavy caliber stop valve are all the more so, and moment is big during operation, uses inconvenience.
The model utility content
To the shortcoming of existing valve, the utility model provides a kind of novel pressure balance type stop valve.
To achieve these goals, the measure taked of the utility model:
A kind of pressure balance type stop valve comprises valve body, offers medium channel on the valve body; Flap places the sealing surface place of valve body; Flap is connected with the lower end of valve rod, and the cylindrical of welding cover adopts the sealing of O RunddichtringO on cylinder sleeve internal diameter and the flap, and it axially offers the through hole of off-axis in the flap upper edge.
The beneficial effect of the utility model: reasonable in design, eliminated flap upper and lower end operating pressure differential effectively, switch moment reduces greatly, is applicable to high pressure, large bore valves, long service life.
Description of drawings
The structural representation of Fig. 1 the utility model.
Embodiment
A kind of pressure balance type stop valve; Comprise valve body 1, offer medium channel on the valve body 1, flap 2 places the sealing surface place of valve body 1; Flap 2 is connected with the lower end of valve rod 10; The cylindrical of welding cover adopts the sealing of O RunddichtringO on cylinder sleeve 5 internal diameters and the flap 2, and it axially offers the through hole of off-axis in flap 2 upper edges, and a movable confined space has just been formed at the middle part of cylinder sleeve 5 and flap 2 tops; The upper end that the medium through hole of pressure medium through flap 2 just enters into behind this space flap 2 has produced a very big downward thrust, the upwards active force that gives in order to balance flap 2 lower end media.The beneficial effect of the utility model: reasonable in design, eliminated flap upper and lower end operating pressure differential effectively, switch moment reduces greatly, is applicable to high pressure, large bore valves, long service life.
Those skilled in the art's simple modification all is within the protection domain of the utility model with replacement in related domain.
Claims (1)
1. pressure balance type stop valve; Comprise valve body (1), valve body offers medium channel on (1), and flap (2) places the sealing surface place of valve body (1); Flap (2) is connected with the lower end of valve rod (10); It is characterized in that the cylindrical that cylinder sleeve (5) internal diameter and flap (2) are gone up the welding cover adopts the sealing of O RunddichtringO, it axially offers the through hole of off-axis in flap (2) upper edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120443193XU CN202418599U (en) | 2011-07-20 | 2011-11-02 | Pressure balancing check valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120257798 | 2011-07-20 | ||
| CN201120257798.X | 2011-07-20 | ||
| CN201120443193XU CN202418599U (en) | 2011-07-20 | 2011-11-02 | Pressure balancing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418599U true CN202418599U (en) | 2012-09-05 |
Family
ID=46743369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120443193XU Expired - Fee Related CN202418599U (en) | 2011-07-20 | 2011-11-02 | Pressure balancing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418599U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374923A (en) * | 2018-04-09 | 2018-08-07 | 中南焦作氨阀股份有限公司 | A kind of big pressure difference Open valve |
-
2011
- 2011-11-02 CN CN201120443193XU patent/CN202418599U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374923A (en) * | 2018-04-09 | 2018-08-07 | 中南焦作氨阀股份有限公司 | A kind of big pressure difference Open valve |
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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 |
Owner name: TAITE VALVE CO., LTD. Free format text: FORMER NAME: TIANTE VALVE GROUP CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 323000 Zhejiang Province, Lishui City Shuige Industrial Zone Patentee after: Tete valve Limited by Share Ltd Address before: 323000 Zhejiang Province, Lishui City Shuige Industrial Zone Patentee before: Tiante Valve Group Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20171102 |