CN203051858U - Swing check valve - Google Patents
Swing check valve Download PDFInfo
- Publication number
- CN203051858U CN203051858U CN 201220636021 CN201220636021U CN203051858U CN 203051858 U CN203051858 U CN 203051858U CN 201220636021 CN201220636021 CN 201220636021 CN 201220636021 U CN201220636021 U CN 201220636021U CN 203051858 U CN203051858 U CN 203051858U
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- CN
- China
- Prior art keywords
- valve
- check valve
- sealing area
- valve seat
- flap
- 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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Abstract
The utility model relates to a swing check valve, which comprises a valve body and a valve base, wherein the valve base is arranged in the valve body; the valve base is provided with a first sealing surface; a supporting seat is fixed on the valve base through a fastener; an integral valve clack is hinged on the supporting seat; the valve clack is provided with a second sealing surface; and when the second sealing surface is contacted with the first sealing surface, the check valve is closed. According to the swing check valve disclosed by the utility model, the valve clack is connected with the supporting seat, so that the valve base is prevented from being damaged easily, and the service life of the check valve is prolonged; when the valve clack moves, only one support point is formed, so that convenience is brought to installation, and the position of a movable joint can be well adjusted; and moreover, during movement, the phenomenon of interference is not caused, so that normal use of the check valve is ensured.
Description
Technical field
The utility model relates to a kind of safety check, relates in particular to a kind of Swing check valve, belongs to valve technology field.
Background technique
Swing check valve has simple in structure, good manufacturability, and flow resistance is little, opens and closes rapidly with safety and advantage such as examines, and therefore is widely used on industrial pipelines such as petrochemical industry and oil refining, is used for preventing that medium from flowing backwards and the protection main frame.The structure of the Swing check valve of prior art as shown in Figure 1, comprise valve body 1, valve seat 2, bearing 3, rocking bar 3 and flap 4, valve seat 2 is arranged in the valve body 1, valve seat 2 is provided with primary sealing area 5, rocking bar 3 and valve seat 2 hinges, flap 4 and rocking bar 3 are connected by screw thread, and flap 4 is provided with secondary sealing area 6, when secondary sealing area 6 contacts with primary sealing area 5, closure of check ring.The Swing check valve of said structure, the direct and valve seat hinge of rocking bar causes valve seat to damage easily, has reduced the working life of safety check; During the flap motion 2 active nodes are arranged, assembling is inconvenient and produce interference phenomenon sometimes, has influenced the normal use of safety check.
The model utility content
The utility model purpose is to provide a kind of valve seat not fragile in order to overcome the deficiencies in the prior art, and the easy for installation and motion of flap the time can not produce the Swing check valve of interference phenomenon.
For achieving the above object, the technical solution adopted in the utility model is: a kind of Swing check valve, comprise valve body and valve seat, and described valve seat is arranged in the valve body, and described valve seat is provided with primary sealing area, by fastening piece bearing is arranged fixedly on the described valve seat; Described bearing upper hinge is provided with the flap of integral type; Described flap is provided with secondary sealing area; When described secondary sealing area contacts with primary sealing area, closure of check ring.
Preferably, described flap is arranged on the bearing by rotating shaft.
Preferably, the oblique angle of described primary sealing area is 20 °～35 °.
Preferably, also be provided with seal ring on the described primary sealing area.
Because the utilization of technique scheme, the utility model compared with prior art has following advantage:
A kind of Swing check valve of the utility model scheme, flap links to each other with bearing, makes valve seat not fragile, has increased the working life of safety check; The flap motion time has only a fulcrum, and is easy for installation, can adjust the position of active node preferably, and can not produce interference phenomenon during motion, guaranteed the normal use of safety check; Because the oblique angle of primary sealing area is 20 °～35 °, during closure of check ring, the pressure that flap is pressed on the valve seat is bigger, good seal performance again.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Accompanying drawing 1 is the structural representation of the Swing check valve of prior art;
Accompanying drawing 2 is the structural representation of Swing check valve of the present utility model;
Accompanying drawing 3 is the force analysis figure of Swing check valve flap of the present utility model;
Wherein: 1, valve body; 2, valve seat; 3, rocking bar; 4, flap; 5, primary sealing area; 6, secondary sealing area; 7, seal ring; 8, fastening piece; 9, bearing; 10, rotating shaft.
Embodiment
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
Described in the utility model a kind of Swing check valve as shown in Figure 2 comprises valve body 1 and valve seat 2, and described valve seat 2 is arranged in the valve body 1, and described valve seat 2 is provided with primary sealing area 5, and preferred, the oblique angle of described primary sealing area 5 is 20 °～35 °; Also be provided with seal ring 7 on the described primary sealing area 5; By fastening piece 8 bearing 9 is arranged fixedly on the described valve seat 2; Described bearing 9 upper hinges are provided with the flap 4 of integral type; Described flap 4 is arranged on the bearing 9 by rotating shaft 10; Described flap 4 is provided with secondary sealing area 6; When described secondary sealing area 6 contacts with primary sealing area 5, closure of check ring.
As shown in Figure 3, the support force N=Wsin α of 2 pairs of flaps 4 of valve seat, α is more big, and N is more big, and namely 4 pairs of valve seat 2 pressure of flap are also more big, because the oblique angle α of primary sealing area is 20 °～35 °, during closure of check ring, the pressure that flap 4 is pressed on the valve seat 2 is bigger, good seal performance, pressure is risen rapidly, reached the effect of non-return.
Swing check valve of the present utility model, flap 4 links to each other with bearing 9, makes valve seat 2 not fragile, has increased the working life of safety check; Have only a fulcrum during flap 4 motion, easy for installation, the position of active node can be adjusted preferably, and interference phenomenon can not be produced during motion, guaranteed the normal use of safety check.
Below only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technological scheme of formation, all drop within the utility model rights protection scope.
Claims (4)
1. a Swing check valve comprises valve body and valve seat, and described valve seat is arranged in the valve body, and described valve seat is provided with primary sealing area, it is characterized in that: by fastening piece bearing is arranged fixedly on the described valve seat; Described bearing upper hinge is provided with the flap of integral type; Described flap is provided with secondary sealing area; When described secondary sealing area contacts with primary sealing area, closure of check ring.
2. Swing check valve according to claim 1, it is characterized in that: described flap is arranged on the bearing by rotating shaft.
3. Swing check valve according to claim 1 and 2, it is characterized in that: the oblique angle of described primary sealing area is 20 °～35 °.
4. Swing check valve according to claim 3 is characterized in that: also be provided with seal ring on the described primary sealing area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636021 CN203051858U (en) | 2012-11-27 | 2012-11-27 | Swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636021 CN203051858U (en) | 2012-11-27 | 2012-11-27 | Swing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203051858U true CN203051858U (en) | 2013-07-10 |
Family
ID=48734812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220636021 Expired - Fee Related CN203051858U (en) | 2012-11-27 | 2012-11-27 | Swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203051858U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595364A (en) * | 2018-11-28 | 2019-04-09 | 中国石油天然气股份有限公司 | A kind of oil recovery well group flow line through ball type single flow device and application method |
-
2012
- 2012-11-27 CN CN 201220636021 patent/CN203051858U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595364A (en) * | 2018-11-28 | 2019-04-09 | 中国石油天然气股份有限公司 | A kind of oil recovery well group flow line through ball type single flow device and application method |
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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: 20130710 Termination date: 20131127 |