CN202252013U - Butterfly valve with mother-son butterfly plates - Google Patents
Butterfly valve with mother-son butterfly plates Download PDFInfo
- Publication number
- CN202252013U CN202252013U CN2011203543232U CN201120354323U CN202252013U CN 202252013 U CN202252013 U CN 202252013U CN 2011203543232 U CN2011203543232 U CN 2011203543232U CN 201120354323 U CN201120354323 U CN 201120354323U CN 202252013 U CN202252013 U CN 202252013U
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- Prior art keywords
- valve
- butterfly plate
- butterfly
- shaft
- valve shaft
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- Expired - Fee Related
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Abstract
The utility model relates to a butterfly valve with mother-son butterfly plates. A valve body is provided with an inlet and an outlet, and a valve shaft penetrates in the valve body. A valve seat is arranged in the valve body, and a butterfly plate matched with the valve seat is arranged on the valve shaft. One side of the butterfly plate is provided with a left shaft sleeve pipe and a right shaft sleeve pipe which are sheathed on the valve shaft, and a second butterfly plate hole is arranged on the butterfly plate. A second valve seat is arranged on the second butterfly plate hole, and a second butterfly plate matched with the second valve seat is connected on the valve shaft. One side of the second butterfly plate is provided with a second shaft sleeve pipe sheathed on the valve shaft, and the second shaft sleeve pipe is inlaid between the left shaft sleeve pipe and the right shaft sleeve pipe of the butterfly plate and is connected on the valve shaft through a key pin. A crank is connected on the second butterfly plate, and an adjusting bolt is arranged on the crank. As the second butterfly plate is arranged on the butterfly plate, when the valve is opened, the second butterfly plate is opened in advance, so that the pressure difference of the front and the back of the butterfly plate is reduced; and then the butterfly plate is opened under the lower pressure difference. The valve shaft does not need to overcome greater force, the diameter of the valve shaft can be smaller, a transmission device can also be smaller, and the inlet and the outlet of the larger-diameter butterfly valve do not need to connect by-pass valves. The manufacturing cost of the butterfly valve is lower.
Description
Technical field
The utility model relates to the butterfly plate of a kind of large-diameter butterfly valve, particularly a kind of large-diameter butterfly valve.
Background technique
Latus rectum is called large-diameter butterfly valve greater than 500 millimeters butterfly valve; Large-diameter butterfly valve has valve body, and valve body has the fluid inlet/outlet, and the and arranged on left and right sides of valve body has left and right valve shaft seat respectively; Be installed with valve shaft on the left and right valve shaft seat; Valve seat is arranged in the valve body, be connected with the butterfly plate that matches with valve seat on the valve shaft, a side of butterfly plate has the pipe spreader that is enclosed within on the valve shaft.In the existing technology, large-diameter butterfly valve has only a butterfly plate, and butterfly plate is to be connected on the valve shaft with key pin; This large-diameter butterfly valve, butterfly plate receives the bigger pressure of fluid when closing, and the pressure difference before and after the butterfly plate is bigger; Large-diameter butterfly valve is when opening, and valve shaft will overcome bigger power just can make butterfly plate rotarily open, and the power that needs when opening owing to large-diameter butterfly valve is bigger; So the diameter of valve shaft is bigger, transmission device is also bigger, and manufacturing cost is higher; For the bigger large-diameter butterfly valve of latus rectum, in order to reduce the power that large-diameter butterfly valve is opened, the inlet/outlet at large-diameter butterfly valve is parallel with by-pass valve sometimes; In use; Open by-pass valve earlier, open large-diameter butterfly valve again, the expense of large-diameter butterfly valve is increased.
Summary of the invention
The purpose of the utility model is in order to overcome above-mentioned deficiency, and the diameter that proposes a kind of valve shaft is not very big, and transmission device neither be very big, the butterfly valve with primary and secondary butterfly plate that manufacturing cost is lower.
The utility model is realized with following method.
Butterfly valve with primary and secondary butterfly plate has valve body, and valve body has the fluid inlet/outlet, and the and arranged on left and right sides of valve body has left and right valve shaft seat respectively; Be installed with valve shaft on the left and right valve shaft seat, valve seat is arranged in the valve body, the butterfly plate that matches with valve seat is arranged on the valve shaft; One side of butterfly plate has the left and right pipe spreader that is enclosed within on the valve shaft, and the second butterfly plate hole is arranged on the butterfly plate, on the second butterfly plate hole second valve seat is arranged; Be connected with second butterfly plate that matches with second valve seat on the valve shaft; One side of second butterfly plate has second pipe spreader that is enclosed within on the valve shaft, and second pipe spreader is embedded between the left and right pipe spreader of butterfly plate, and second pipe spreader is connected on the valve shaft with key pin; Be connected with crank on second butterfly plate, the adjustment bolt is arranged on the crank.
Have that the butterfly plate on the valve seat can be called female butterfly plate in the valve body of butterfly valve of primary and secondary butterfly plate, the butterfly plate on female butterfly plate on second valve seat can be called sub-butterfly plate.
During use, be installed in butterfly valve on the fluid line with primary and secondary butterfly plate.Butterfly valve with primary and secondary butterfly plate is when cutting out, and butterfly plate is on valve seat, and second butterfly plate is on second valve seat; During unlatching, rotate valve shaft, because the left and right pipe spreader of butterfly plate is that to be enclosed within on the valve shaft be the equal of that butterfly plate is hinged on the valve shaft; Second pipe spreader of second butterfly plate is embedded between the left and right pipe spreader of butterfly plate and with key pin and is connected on the valve shaft, so second valve seat is left in the upset earlier of second butterfly plate, fluid is earlier from the second butterfly plate orifice flow mistake; Reduced the pressure reduction of butterfly plate front and back widely, be rotated further valve shaft, the crank on second butterfly plate is against on the butterfly plate; Promote the butterfly plate upset and lift off a seat, fluid flows through from body cavity, makes the butterfly valve complete opening with primary and secondary butterfly plate.Regulate the adjustment bolt, can more certainly regulate the position of butterfly plate at complete opening.
Second butterfly plate is arranged on the butterfly plate of the utility model, and the utility model is when opening, and second butterfly plate is opened in advance; Fluid reduces the pressure difference of butterfly plate front and back earlier from the second butterfly plate orifice flow mistake, under lower pressure difference, opens butterfly plate again; Valve shaft need not overcome bigger power; Because the utility model does not need bigger power when opening, so the diameter of valve shaft can be less, transmission device also can be less; Need not make the manufacturing cost of the utility model lower at the inlet/outlet parallel connection by-pass valve of large-diameter butterfly valve yet.
Below in conjunction with accompanying drawing, the utility model is done explanation further.
Description of drawings
Fig. 1 looks schematic representation according to a kind of master with butterfly valve of primary and secondary butterfly plate that the invention scheme of the utility model proposes;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1;
Fig. 3 is that second butterfly plate is that couple master of the eccentric butterfly valve with primary and secondary butterfly plate looks schematic representation;
The B-B cross-sectional schematic of Fig. 4 Fig. 3.
Embodiment
Among Fig. 1, Fig. 2, the butterfly valve with primary and secondary butterfly plate has valve body 1, and valve body has fluid inlet/outlet 2,3; The and arranged on left and right sides of valve body has left and right valve shaft seat 4,5 respectively, is installed with valve shaft 6 on the left and right valve shaft seat, and valve seat 7 is arranged in the valve body; The butterfly plate 8 that matches with valve seat is arranged on the valve shaft, and a side of butterfly plate has the left and right pipe spreader 9,10 that is enclosed within on the valve shaft, and the second butterfly plate hole 11 is arranged on the butterfly plate; Second valve seat 12 is arranged on the second butterfly plate hole, and a side that is connected with second butterfly plate, 13, the second butterfly plates that match with second valve seat on the valve shaft has second pipe spreader 14 that is enclosed within on the valve shaft; Second pipe spreader is embedded between the left and right pipe spreader of butterfly plate; Second pipe spreader is connected on the valve shaft with key pin 15, is connected with crank 16 on second butterfly plate, and adjustment bolt 17 is arranged on the crank.
Above-mentioned second butterfly plate with butterfly valve of primary and secondary butterfly plate is an eccentric butterfly plate.Second butterfly plate with butterfly valve of primary and secondary butterfly plate also can be two eccentric butterfly plates.
Among Fig. 1, Fig. 2, second butterfly plate with butterfly valve 18 of primary and secondary butterfly plate is two eccentric butterfly plates 19.
Claims (3)
1. the butterfly valve with primary and secondary butterfly plate has valve body, and valve body has the fluid inlet/outlet; The and arranged on left and right sides of valve body has left and right valve shaft seat respectively, is installed with valve shaft on the left and right valve shaft seat, and valve seat is arranged in the valve body; The butterfly plate that matches with valve seat is arranged on the valve shaft, and a side of butterfly plate has the left and right pipe spreader that is enclosed within on the valve shaft, it is characterized in that: the second butterfly plate hole is arranged on the butterfly plate; On the second butterfly plate hole second valve seat is arranged, be connected with second butterfly plate that matches with second valve seat on the valve shaft, a side of second butterfly plate has second pipe spreader that is enclosed within on the valve shaft; Second pipe spreader is embedded between the left and right pipe spreader of butterfly plate; Second pipe spreader is connected on the valve shaft with key pin, is connected with crank on second butterfly plate, and the adjustment bolt is arranged on the crank.
2. by the described butterfly valve with primary and secondary butterfly plate of claim 1, it is characterized in that: described second butterfly plate with butterfly valve of primary and secondary butterfly plate is single eccentric butterfly plate.
3. by the described butterfly valve with primary and secondary butterfly plate of claim 1, it is characterized in that: described second butterfly plate with butterfly valve of primary and secondary butterfly plate is two eccentric butterfly plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203543232U CN202252013U (en) | 2011-09-21 | 2011-09-21 | Butterfly valve with mother-son butterfly plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203543232U CN202252013U (en) | 2011-09-21 | 2011-09-21 | Butterfly valve with mother-son butterfly plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252013U true CN202252013U (en) | 2012-05-30 |
Family
ID=46113256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203543232U Expired - Fee Related CN202252013U (en) | 2011-09-21 | 2011-09-21 | Butterfly valve with mother-son butterfly plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252013U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330824A (en) * | 2011-09-21 | 2012-01-25 | 铁岭方众阀门有限公司 | Butterfly valve provided with main and auxiliary butterfly plates |
| CN103423501A (en) * | 2013-09-17 | 2013-12-04 | 南通宏大机电制造有限公司 | Gas safety valve |
| CN104976360A (en) * | 2014-04-10 | 2015-10-14 | 江苏神通阀门股份有限公司 | High-pressure balance butterfly valve |
-
2011
- 2011-09-21 CN CN2011203543232U patent/CN202252013U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330824A (en) * | 2011-09-21 | 2012-01-25 | 铁岭方众阀门有限公司 | Butterfly valve provided with main and auxiliary butterfly plates |
| CN103423501A (en) * | 2013-09-17 | 2013-12-04 | 南通宏大机电制造有限公司 | Gas safety valve |
| CN104976360A (en) * | 2014-04-10 | 2015-10-14 | 江苏神通阀门股份有限公司 | High-pressure balance butterfly valve |
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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: 20160921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |