CN201621300U - Single-valve seat multi-sealing structure butterfly valve - Google Patents
Single-valve seat multi-sealing structure butterfly valve Download PDFInfo
- Publication number
- CN201621300U CN201621300U CN2009202554567U CN200920255456U CN201621300U CN 201621300 U CN201621300 U CN 201621300U CN 2009202554567 U CN2009202554567 U CN 2009202554567U CN 200920255456 U CN200920255456 U CN 200920255456U CN 201621300 U CN201621300 U CN 201621300U
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Abstract
The utility model discloses a single-valve seat multi-sealing structure butterfly valve which comprises a valve body, a valve seat fixedly arranged in the inner cavity of the valve body, a valve shaft and a butterfly plate fixedly arranged on the valve shaft, wherein a first sealing ring is arranged on the butterfly plate, an isolating ring is arranged on the outer side of the first sealing ring, a third sealing ring is arranged on the outer side of the isolating ring, a pressure plate is arranged on the outer side of the third sealing ring, and the pressure plate is fixedly arranged on the butterfly plate through a fixed bolt, thus fixedly arranging the third sealing ring, the isolating ring and the first sealing ring on the butterfly plate. When the single-valve seat multi-sealing structure butterfly valve is completely closed, cavities are formed among the first sealing ring, the isolating ring, the third sealing ring and the valve seat, water injection holes which are communicated with the cavities are arranged on the valve body and the valve seat, and sealing water is injected into the cavities for forming water seal. The single-valve seat multi-seal structure butterfly valve has the advantages of simple structure, convenient operation, low cost, no leakage of gas medium, small occupied space, reliable seal and 'zero' seepage sealing performance.
Description
Technical field
The utility model relates to a kind of butterfly valve, refers more particularly to a kind of butterfly valve with single valve seat and multi-sealing structure.
Background technique
Butterfly valve generally is used in the gas distribution pipe network and reclaim line of steel industry, is used for blocking and regulating of pipeline coal gas.The equipment of gas distribution pipe network needs periodical repair, in maintenance, has required the butterfly valve of the effect of blocking must have " zero " seepage sealing characteristics, plays the blank-plate valve gate action, leaks to avoid coal gas, because coal gas has inflammable, explosive and poisonous character; Therefore, consider that from safety, environmental protection and energy-conservation angle the butterfly valve of use must have " zero " seepage sealing characteristics.All there is shortcoming in the valve of doing the blind plate effect of gas pipe line outfit now, can not satisfy usage requirement.As: Flap valve takes up room bigger, and complex structure has a large amount of coal gas and overflows in the operation; The push-pull valve volume is big, and cost is higher; Water Seal Gate Valves takes up room bigger, instability; Two butterfly valve watertight construction volumes are big, and cost is higher, and action match and regulate difficulty is big.
The model utility content
Technical problem to be solved in the utility model is: the butterfly valve with single valve seat and multi-sealing structure that provides a kind of and have " zero " seepage sealing characteristics.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: butterfly valve with single valve seat and multi-sealing structure, comprise: valve body, be fixedly installed on the valve seat of body cavity, valve shaft, be fixedly installed on the butterfly plate on the valve shaft, described butterfly plate is provided with first seal ring, in the first seal ring arranged outside isolating ring is arranged, in the isolating ring arranged outside the 3rd seal ring is arranged, in the 3rd seal ring arranged outside pressing plate is arranged, thereby pressing plate is fixedly installed on the butterfly plate the 3rd seal ring by set screw, the isolating ring and first seal ring are fixedly installed on the butterfly plate, when the butterfly valve with single valve seat and multi-sealing structure contract fully, at first seal ring, isolating ring, can form cavity between the 3rd seal ring and the valve seat, valve body and valve seat are provided with the water injection hole that is connected with cavity, inject sealing water in the cavity, form water-stop.
The utility model has the advantages that: the butterfly valve with single valve seat and multi-sealing structure of said structure, simple in structure, easy to operate, cost is low, and gas medium does not leak, and it is little to take up room, and sealing is reliable, has " zero " seepage sealing characteristics.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the utility model butterfly valve with single valve seat and multi-sealing structure.
Fig. 2 is an A part enlarged view among Fig. 1.
Among the figure: 1, valve body, 2, valve seat, 3, valve shaft, 4, butterfly plate, 5, first seal ring, 6, isolating ring, the 7, the 3rd seal ring, 8, pressing plate, 9, set screw, 10, cavity, 11, water injection hole.
Embodiment
Describe particular content of the present utility model in detail below in conjunction with the drawings and specific embodiments.
As Fig. 1, shown in Figure 2, butterfly valve with single valve seat and multi-sealing structure, comprise: valve body 1, be fixedly installed on the valve seat 2 of valve body 1 inner chamber, valve shaft 3, be fixedly installed on the butterfly plate 4 on the valve shaft 3, described butterfly plate 4 is provided with first seal ring 5, in first seal ring, 5 arranged outside isolating ring 6 is arranged, in isolating ring 6 arranged outside the 3rd seal ring 7 is arranged, in the 3rd seal ring 7 arranged outside pressing plate 8 is arranged, thereby pressing plate 8 is fixedly installed on the butterfly plate 4 the 3rd seal ring 7 by set screw 9, the isolating ring 6 and first seal ring 5 are fixedly installed on the butterfly plate 4, when the butterfly valve with single valve seat and multi-sealing structure contract fully, at first seal ring 5, isolating ring 6, can form cavity 10 between the 3rd seal ring 7 and the valve seat 2, valve body 1 and valve seat 2 are provided with the water injection hole 11 that is connected with cavity 10, inject sealing water in the cavity 10, form water-stop.
When the butterfly valve with single valve seat and multi-sealing structure of said structure uses, when needs are closed butterfly valve, rotate valve shaft 3, valve shaft 3 drives butterfly plate 4 and rotates, butterfly plate 4 and valve seat 2 are cooperatively interacted, make butterfly valve be in full closing state, first seal ring 5 and the 3rd seal ring 7 coincide with valve seat 2 simultaneously and form sealing, at first seal ring 5, isolating ring 6, can form cavity 10 between the 3rd seal ring 7 and the valve seat 2, inject water by water injection hole 11 in cavity 10, the gauge pressure of water is higher than the coal gas pressure medium, will form water-stop one, because the pressure of water is higher than the pressure of coal gas, coal gas can't overflow by water-stop, had realized " zero " seepage of valve.
Claims (1)
1. butterfly valve with single valve seat and multi-sealing structure, comprise: valve body (1), be fixedly installed on the valve seat (2) of valve body (1) inner chamber, valve shaft (3), be fixedly installed on the butterfly plate (4) on the valve shaft (3), it is characterized in that: described butterfly plate (4) is provided with first seal ring (5), in first seal ring (5) arranged outside isolating ring (6) is arranged, in isolating ring (6) arranged outside the 3rd seal ring (7) is arranged, in the 3rd seal ring (7) arranged outside pressing plate (8) is arranged, pressing plate (8) is fixedly installed on butterfly plate (4) by set screw (9) thereby goes up the 3rd seal ring (7), isolating ring (6) and first seal ring (5) are fixedly installed on the butterfly plate (4), when the butterfly valve with single valve seat and multi-sealing structure contract fully, in first seal ring (5), isolating ring (6), can form cavity (10) between the 3rd seal ring (7) and the valve seat (2), valve body (1) and valve seat (2) are provided with the water injection hole (11) that is connected with cavity (10), inject sealing water in the cavity (10), form water-stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202554567U CN201621300U (en) | 2009-11-17 | 2009-11-17 | Single-valve seat multi-sealing structure butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202554567U CN201621300U (en) | 2009-11-17 | 2009-11-17 | Single-valve seat multi-sealing structure butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201621300U true CN201621300U (en) | 2010-11-03 |
Family
ID=43024755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202554567U Expired - Fee Related CN201621300U (en) | 2009-11-17 | 2009-11-17 | Single-valve seat multi-sealing structure butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201621300U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352740A (en) * | 2022-01-21 | 2022-04-15 | 陈牡丹 | Novel butterfly valve |
-
2009
- 2009-11-17 CN CN2009202554567U patent/CN201621300U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352740A (en) * | 2022-01-21 | 2022-04-15 | 陈牡丹 | Novel butterfly valve |
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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: 20101103 Termination date: 20111117 |