CN201651437U - Sealing rotating starting type check valve - Google Patents
Sealing rotating starting type check valve Download PDFInfo
- Publication number
- CN201651437U CN201651437U CN2010201505176U CN201020150517U CN201651437U CN 201651437 U CN201651437 U CN 201651437U CN 2010201505176 U CN2010201505176 U CN 2010201505176U CN 201020150517 U CN201020150517 U CN 201020150517U CN 201651437 U CN201651437 U CN 201651437U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- sealing
- circular orientation
- check valve
- 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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- Check Valves (AREA)
- Lift Valve (AREA)
Abstract
The utility model discloses a sealing rotating starting type check valve, which comprises a valve body, a valve cover, a valve blade, a rock rod and a hanger, wherein a sealing valve seat is arranged on the valve body, the valve blade is arranged in a mode correspondingly matched with the sealing valve seat and is fixed on the lower end of the rock rod, the upper end of the rock rod is rotatably arranged under the hanger, a hanging fixing plate is arranged on the valve body, the hanger is fixedly arranged on the hanging fixing plate, an annular positioning groove is arranged on the upper end surface of the valve body, an annular positioning bulge correspondingly matched with the positioning groove is arranged on the valve cover, and a sealing gasket is arranged between the annular positioning bulge and the annular positioning groove. The utility model has the advantage of good sealing effect.
Description
Technical field
The utility model relates to a kind of valve, specifically is meant to be used for the Swing check valve that pipeline prevents that medium from flowing backwards, and is meant a kind of sealing Swing check valve of good sealing effect especially.
Background technique
Swing check valve claims one-way valve or check valve again, belongs to a kind of of safety check, and Swing check valve is used for pipe-line system, and the power of the mobile generation of tube road medium itself realizes opening and closing automatically, and belongs to a kind of automatic valve.Present known Swing check valve is mainly by valve body, valve gap, flap, rocking bar with hang and form, and wherein hangs generally by screw in valve body, is used to being rotationally connected of rocking bar to provide to rotate fulcrum is installed.When its working principle was following current, fluid entered valve from the import of Swing check valve, fluid be subjected to the bottom flap stop that flow rate of fluid reduces, the part dynamic pressure changes into hydrostatic pressure on flap, and flap rotation is upwardly opened; During adverse current, fluid passes back into valve from the outlet of Swing check valve, and the hydrostatic pressure of fluid closes the flap bottom on the flap of opening, and flap stops fluid reflux.
But because the moment that Swing check valve is opening and closing, because medium is a directional flow, open and close along with flap, medium reduces to zero from the back-flow velocity of maximum, and pressure raises rapidly, and generation may have " water hammer " phenomenon of destruction to pipe-line system, makes the structure that is tightly connected between valve gap and the valve body be difficult to bear the impact of variation in pressure, cause its sealing surface impaired, the decline of sealing envelope property.
The model utility content
The purpose of this utility model is in order to overcome the shortcoming and defect that prior art exists, and a kind of a kind of sealing Swing check valve of good sealing effect is provided.
For achieving the above object, the technical solution of the utility model is to include valve body, valve gap, flap, rocking bar and hanging, described valve body is provided with seal valve seat, described flap and the setting of seal valve seat corresponding matching and be fixed in the lower end of rocking bar, the upper end of described rocking bar is rotated and is installed on the below of hanging, described valve body is provided with hangs fixed plate, described hang to be fixedly installed in hang on the fixed plate, the upper-end surface of described valve body is provided with the circular orientation groove, described valve gap is provided with the circular orientation projection of corresponding coupling with positioning groove, is provided with gasket seal between described circular orientation projection and the circular orientation groove.By this setting, making has increased by a seal structures between valve body and valve gap, even if the pressure change of valve opening and closing is impacted valve gap, the telescopically compensation valve body that barometric fluctuation brought of gasket seal and little change of valve gap have improved sealing of the present utility model.
Further being provided with is that described valve gap is fixedly installed on the valve body by flange bolt and tightening nut.
Below in conjunction with specification drawings and specific embodiments the utility model is done further introduction.
Description of drawings
Fig. 1 the utility model embodiment structural representation.
Embodiment
Embodiment of the present utility model as shown in Figure 1, include valve body 1, valve gap 2, flap 3, rocking bar 4 and hang 5, described valve body 1 is provided with seal valve seat 11, described flap 3 and seal valve seat 11 corresponding matching settings and be fixed in the lower end of rocking bar 4, the upper end of described rocking bar 4 is rotated to be installed on and is hung 5 below, described valve body 1 is provided with hangs fixed plate 12, describedly hang 5 and be fixedly installed in and hang on the fixed plate 12, the upper-end surface of described valve body 1 is provided with circular orientation groove 13, described valve gap 2 is provided with the circular orientation projection 21 with positioning groove 13 corresponding couplings, be provided with gasket seal 6 between described circular orientation projection 21 and the circular orientation groove 13, the utility model is in concrete enforcement, described valve gap 2 is fixedly installed on the valve body 1 by flange bolt 7 and tightening nut 71, the utility model is by being provided with, circular orientation projection 21, circular orientation groove 13 and gasket seal 6, making has increased by a seal structures between valve body 1 and valve gap 2, even if the pressure change of valve opening and closing, valve gap 2 is impacted, the valve body that the telescopically compensatory pressure change of gasket seal 6 is brought and little change of valve gap have improved sealing of the present utility model.
Claims (2)
1. one kind seals Swing check valve, include valve body, valve gap, flap, rocking bar and hanging, described valve body is provided with seal valve seat, described flap and the setting of seal valve seat corresponding matching and be fixed in the lower end of rocking bar, the rotatable below of hanging that is installed on, the upper end of described rocking bar, described valve body is provided with hangs fixed plate, described hang to be fixedly installed in hang on the fixed plate, it is characterized in that: the upper-end surface of described valve body is provided with the circular orientation groove, described valve gap is provided with the circular orientation projection with the corresponding coupling of circular orientation groove, is provided with gasket seal between described circular orientation projection and the circular orientation groove.
2. sealing Swing check valve according to claim 1 is characterized in that: described valve gap is fixedly installed on the valve body by flange bolt and tightening nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201505176U CN201651437U (en) | 2010-03-31 | 2010-03-31 | Sealing rotating starting type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201505176U CN201651437U (en) | 2010-03-31 | 2010-03-31 | Sealing rotating starting type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201651437U true CN201651437U (en) | 2010-11-24 |
Family
ID=43116674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201505176U Expired - Fee Related CN201651437U (en) | 2010-03-31 | 2010-03-31 | Sealing rotating starting type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201651437U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032040A (en) * | 2012-12-21 | 2013-04-10 | 成都欧迅海洋工程装备科技有限公司 | Continuous cycle short circuit suitable for air drilling |
| CN107202184A (en) * | 2017-07-13 | 2017-09-26 | 辽宁飞鸿达蒸汽节能设备有限公司 | Check-valves is opened in piston type rotation |
-
2010
- 2010-03-31 CN CN2010201505176U patent/CN201651437U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032040A (en) * | 2012-12-21 | 2013-04-10 | 成都欧迅海洋工程装备科技有限公司 | Continuous cycle short circuit suitable for air drilling |
| CN103032040B (en) * | 2012-12-21 | 2015-12-02 | 成都欧迅海洋工程装备科技有限公司 | A kind of continuous circulation short circuit being applicable to air drilling |
| CN107202184A (en) * | 2017-07-13 | 2017-09-26 | 辽宁飞鸿达蒸汽节能设备有限公司 | Check-valves is opened in piston type rotation |
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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: 20101124 Termination date: 20140331 |