CN2603255Y - Medium self-sealing butterfly valve with metal ring - Google Patents
Medium self-sealing butterfly valve with metal ring Download PDFInfo
- Publication number
- CN2603255Y CN2603255Y CN 02259651 CN02259651U CN2603255Y CN 2603255 Y CN2603255 Y CN 2603255Y CN 02259651 CN02259651 CN 02259651 CN 02259651 U CN02259651 U CN 02259651U CN 2603255 Y CN2603255 Y CN 2603255Y
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- sealing
- medium
- valve
- valve body
- butterfly
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- Expired - Fee Related
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Abstract
A metal ring medium self sealing butterfly valve is provided. The utility model comprises a valve body assembly, wherein the valve body assembly is provided with a butterfly board and an elastic sealing mechanism on the valve body; wherein the elastic sealing mechanism is a conical face elastic metal seal ring, while the seal ring has two inner and outer conical faces; when one conical face is a sealing face and the other conical face is in the medium, the sealing conical faces are tightly against a seal pair under the medium pressure, thus strengthening the sealing force; and the sealing force is increased with the increase of the medium pressure, making the sealing more reliable.
Description
Technical field
The utility model relates to a kind of metallic sealing butterfly valve, relates to a kind of medium selfsealings butterfly valve with metal ring specifically.
Background technique
At present, metallic sealing butterfly valve mainly contains two kinds: the one, and the sphere double eccentric butterfly valve, sealing is line contact sealing, and performance is unreliable, and especially at large-diameter butterfly valve, difficult sealing is to guarantee; Another kind is a conical surface three eccentric butterfly valve, and sealing is face contact, and when closing, when medium forward flow (flowing to valve seat from stem side), butterfly plate is subjected to pressure medium to press to valve seat, and therefore, Open valve is difficult unusually, and wearing and tearing increase.When medium during from reverse flow (under the closed condition medium from the valve seat effluent to valve rod), butterfly plate makes the stressed bending of valve rod under the pressure medium effect, force butterfly plate to produce the trend of lifting off a seat, and leaks thereby produce.
Summary of the invention
The purpose of this utility model be to provide at above-mentioned existing in prior technology defective a kind of simple in structure, medium forward and reverse flow all can reliable sealing, open metallic sealing butterfly valve light, that increase the service life.
Working principle of the present utility model is: adopt a kind of elastic metallic seal ring, utilize pressure medium to form sealing force.When pressure medium increased, its sealing load also increased thereupon, formed sealing reliably.
The purpose of this utility model can realize by following technical measures:
The utility model comprises valve body assembly, and in described valve body assembly, butterfly plate and valve body are provided with an elastic packing mechanism.
Described elastic packing mechanism is a conical surface elastic metallic seal ring, has inside and outside two conical surfaces.When a conical surface is a sealing surface, and another conical surface because the pressure medium effect makes sealing cone be adjacent to sealing pair, strengthens sealing force, and increases sealing force along with the increase of pressure medium when being in the medium, makes sealing more reliable.
Description of drawings
Fig. 1 cuts open figure for the utility model embodiment 1 master.
Fig. 2 cuts open figure for the utility model embodiment 2 master.
Fig. 3 cuts open figure for the utility model embodiment 3 master.
Fig. 4 cuts open figure for the utility model embodiment 4 master.
Embodiment
The utility model describes in further detail below in conjunction with specific embodiment (accompanying drawing):
Embodiment 1:
As shown in Figure 1, the utility model comprises valve body assembly.In described valve body assembly, elastic metallic seal ring (9) is arranged in the groove of valve body (1) and forms valve seat, and is fastening by pressing plate (5) and screw (10).When medium during from forward flow, promptly to valve seat, pressure medium effect butterfly plate is pressed to valve seat to medium from valve rod (2) effluent, strengthens sealing.Simultaneously,, make the valve opening friction torque alleviate, prolonged the working life of valve because the resiliently deformable coordinative role of valve seat has alleviated the active force on the valve seat; When medium during from reverse flow, promptly to valve rod (2), the valve seat internal conical surface is a sealing surface to medium from the valve seat effluent, and outer conical surface is subjected to the pressure medium effect to press to butterfly plate, has strengthened sealing force, makes sealing more reliable.
As shown in Figure 2, the utility model comprises valve body assembly.Two elastic metallic seal ring (9) and (11) are arranged in described valve body assembly, and two valve seats are arranged in the valve body recess about forming, and are fastening by pressing plate (5) and screw (10).When medium when postive direction flows, have and can alleviate the effect of valve opening friction torque as described in example 1 above, simultaneously, because the outer conical surface of upper valve base (11) is in the medium, pressure medium makes it press to butterfly plate, helps to strengthen sealing; When the medium reverse flow, its lower valve base (9) effect as described in example 1 above is identical, strengthens sealing.
Embodiment 3
As shown in Figure 3, the utility model comprises valve body assembly.Two elastic metallic seal ring (9) and (18) are arranged in described valve body assembly, and one is contained in and forms valve seat on the valve body, fastening by pressing plate (5) and screw (10); Another is contained in butterfly plate (8) and goes up formation butterfly plate seal ring, and is fastening by pressing plate (14) and a chain for binding criminals nail (15).When the medium forward flow, have and to alleviate the effect of valve opening friction torque as described in example 1 above, simultaneously, because the outer cone of butterfly plate seal ring (18) is a sealing surface, internal conical surface is in the medium, and pressure medium makes it press to valve seat, helps to strengthen sealing; When the medium reverse flow, elastic seat (9) effect as described in example 1 above is identical, strengthens sealing.
Embodiment 4
As shown in Figure 4, the utility model comprises valve body assembly.One elastic metallic seal ring (17) is arranged in described valve body assembly, be arranged on butterfly plate (8) and go up formation butterfly plate seal ring, fastening by pressing plate (14) and screw (15).When the medium forward flow, because the coordinative role of seal ring resiliently deformable can alleviate the valve opening friction torque; When the medium reverse flow, the male cone (strobilus masculinus) of butterfly plate seal ring (17) is a sealing surface, and inner conical surface is in the medium, and pressure medium makes it press to valve seat, the sealing when guaranteeing the medium reverse flow.
Claims (5)
1, a kind of medium selfsealings butterfly valve with metal ring, it comprises valve body assembly, it is characterized in that: butterfly plate in the described valve body assembly (8) is provided with an elastic packing mechanism with valve body (1), and this mechanism is a conical surface elastic metallic seal ring.
2, the medium selfsealings butterfly valve with metal ring according to claim 1 is characterized in that: described elastic packing mechanism is a conical surface elastic metallic seal ring (9), is arranged on the valve body (1).
3, the medium selfsealings butterfly valve with metal ring according to claim 1 is characterized in that: described elastic packing mechanism is that plug tap surface elastic metallic packing ring (9) and (11) are combined to form two valve seats up and down, and it is arranged on the valve body (1).
4, the medium selfsealings butterfly valve with metal ring according to claim 1, it is characterized in that: described elastic packing mechanism is plug tap surface elastic metallic packing ring (9) and (18), one elastic metallic seal ring (9) is arranged in the groove of valve body (1), and another elastic metallic seal ring (18) is arranged on the butterfly plate (8).
5, the medium selfsealings butterfly valve with metal ring according to claim 1 is characterized in that: described elastic packing mechanism is that a conical surface elastic metallic seal ring (17) is arranged on the butterfly plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02259651 CN2603255Y (en) | 2002-10-10 | 2002-10-10 | Medium self-sealing butterfly valve with metal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02259651 CN2603255Y (en) | 2002-10-10 | 2002-10-10 | Medium self-sealing butterfly valve with metal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2603255Y true CN2603255Y (en) | 2004-02-11 |
Family
ID=34150075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02259651 Expired - Fee Related CN2603255Y (en) | 2002-10-10 | 2002-10-10 | Medium self-sealing butterfly valve with metal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2603255Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884983A (en) * | 2017-04-17 | 2017-06-23 | 杭州华惠阀门有限公司 | Removable seal structure |
-
2002
- 2002-10-10 CN CN 02259651 patent/CN2603255Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884983A (en) * | 2017-04-17 | 2017-06-23 | 杭州华惠阀门有限公司 | Removable seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |