CN204004471U - A kind of butterfly valve - Google Patents
A kind of butterfly valve Download PDFInfo
- Publication number
- CN204004471U CN204004471U CN201420466007.8U CN201420466007U CN204004471U CN 204004471 U CN204004471 U CN 204004471U CN 201420466007 U CN201420466007 U CN 201420466007U CN 204004471 U CN204004471 U CN 204004471U
- Authority
- CN
- China
- Prior art keywords
- flap
- valve
- valve seat
- butterfly valve
- butterfly
- 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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- Lift Valve (AREA)
Abstract
The utility model discloses a kind of butterfly valve, comprise valve body, valve seat, valve rod and flap, described valve seat is arranged in described valve body, described valve rod also can rotate through described valve body and described valve seat in described valve body and described valve seat, described flap is fixedly mounted on described valve rod, by controlling the flow of butterfly valve described in the aperture control of described flap, also be provided with protruding lip limit at the edge of described flap, the external diameter on described lip limit is identical with the diameter of described flap, on described valve base inner wall, described flap is opened in the scope of preset angles and is processed with the cambered surface coordinating with described flap, described in while making the open angle of described flap be less than described preset angles, butterfly valve all keeps closed condition.Butterfly valve seal in the utility model better, more reliable.
Description
Technical field
The utility model relates to a kind of valve, in particular to a kind of butterfly valve.
Background technique
Existing butterfly valve, only have in the time that flap turns to 0 ° of position, between valve seat and flap, can seal completely, and owing to being a contact between the two, so the reliability of sealing is lower, if and flap could not turn to completely 0 ° of position will cause be not closed completely and cause leak, reliability is lower.
Model utility content
Technical problem to be solved in the utility model is, a kind of better tightness, more reliable butterfly valve are provided.
Therefore, the technical solution of the utility model is as follows:
A kind of butterfly valve, comprise valve body, valve seat, valve rod and flap, described valve seat is arranged in described valve body, described valve rod also can rotate through described valve body and described valve seat in described valve body and described valve seat, described flap is fixedly mounted on described valve rod, by controlling the flow of butterfly valve described in the aperture control of described flap, also be provided with protruding lip limit at the edge of described flap, the external diameter on described lip limit is identical with the diameter of described flap, on described valve base inner wall, described flap is opened in the scope of preset angles and is processed with the cambered surface coordinating with described flap, described in while making the open angle of described flap be less than described preset angles, butterfly valve all keeps closed condition.
Wherein, according to actual needs, described preset angles can be 3～15 °.
In this technological scheme, lip limit has increased the area of contact between flap and valve seat, makes a contact become face contact, can ensure better the sealing between flap and valve seat; Cambered surface can avoid flap not turn to 0 ° and cause butterfly valve to be not closed completely causing leakage, further improve the reliability of butterfly valve completely.
Brief description of the drawings
Fig. 1 is according to the structural representation of the utility model embodiment's butterfly valve;
Fig. 2 is the A-A sectional view of butterfly valve in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
As shown in Figure 1, according to embodiment's of the present utility model butterfly valve, comprise valve body 1, valve seat 4, valve rod 2 and flap 3, described valve seat 4 is arranged in described valve body 1, described valve rod 2 also can be in described valve body 1 and the interior rotation of described valve seat 4 through described valve body 1 and described valve seat 4, described flap 3 is fixedly mounted on described valve rod 2, by controlling the flow of butterfly valve described in the aperture control of described flap 3, also be provided with protruding lip limit 31 at the edge of described flap 3, the external diameter on described lip limit 31 is identical with the diameter of described flap 3, on described valve seat 4 inwalls, described flap 3 is opened in the scope of preset angles and is processed with the cambered surface 41 coordinating with described flap 3, described in while making the open angle of described flap 3 be less than described preset angles, butterfly valve all keeps closed condition.
Wherein, according to actual needs, described preset angles can be 3～15 °.
In this technological scheme, lip limit 31 has increased the area of contact between flap 3 and valve seat 4, makes a contact become face contact, can ensure better the sealing between flap 3 and valve seat 4; Cambered surface 41 can avoid flap 3 not turn to 0 ° and cause butterfly valve to be not closed completely causing leakage, further improve the reliability of butterfly valve completely.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but within this embodiment is included in scope of the present utility model.
Claims (2)
1. a butterfly valve, it is characterized in that, comprise valve body (1), valve seat (4), valve rod (2) and flap (3), described valve seat (4) is arranged in described valve body (1), described valve rod (2) also can rotate through described valve body (1) and described valve seat (4) in described valve body (1) and described valve seat (4), described flap (3) is fixedly mounted on described valve rod (2), by controlling the flow of butterfly valve described in the aperture control of described flap (3), also be provided with protruding lip limit (31) at the edge of described flap (3), the external diameter on described lip limit (31) is identical with the diameter of described flap (3), on described valve seat (4) inwall, described flap (3) is opened in the scope of preset angles and is processed with the cambered surface (41) coordinating with described flap (3), described in while making the open angle of described flap (3) be less than described preset angles, butterfly valve all keeps closed condition.
2. butterfly valve according to claim 1, is characterized in that, described preset angles is 3～15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420466007.8U CN204004471U (en) | 2014-08-18 | 2014-08-18 | A kind of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420466007.8U CN204004471U (en) | 2014-08-18 | 2014-08-18 | A kind of butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204004471U true CN204004471U (en) | 2014-12-10 |
Family
ID=52044474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420466007.8U Expired - Fee Related CN204004471U (en) | 2014-08-18 | 2014-08-18 | A kind of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204004471U (en) |
-
2014
- 2014-08-18 CN CN201420466007.8U patent/CN204004471U/en not_active Expired - Fee Related
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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: 20141210 Termination date: 20160818 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |