CN204785019U - Two -way metal seal butterfly valve bearing department prevents silt device - Google Patents
Two -way metal seal butterfly valve bearing department prevents silt device Download PDFInfo
- Publication number
- CN204785019U CN204785019U CN201520479641.XU CN201520479641U CN204785019U CN 204785019 U CN204785019 U CN 204785019U CN 201520479641 U CN201520479641 U CN 201520479641U CN 204785019 U CN204785019 U CN 204785019U
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- China
- Prior art keywords
- butterfly valve
- seal butterfly
- metal seal
- axle sleeve
- way metal
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Abstract
The utility model discloses a two -way metal seal butterfly valve bearing department prevents silt device, including bearing, axle sleeve and sealing washer, the axle sleeve cover is established outside the bearing, and the axle sleeve fixes on two -way metal seal butterfly valve body, and the sealing washer is totally two, and establishes between axle sleeve terminal surface and two -way metal seal butterfly valve body, is the metal seal structure between valve plate and the two -way metal seal butterfly valve body, two -way metal seal butterfly valve bearing department prevents silt device still includes thrust ring and check valve, and the thrust ring is established between two sealing washers, sets up on the two -way metal seal butterfly valve body through -hole external and the thrust ring intercommunication, and the check valve is established in the through -hole outer end, this two -way metal seal butterfly valve bearing department prevents silt device when sealing washer wearing and tearing are serious, through the check valve sealing material that marks, keeps sealed effect, consequently need not frequently to change the sealing washer, has reduced the maintenance cost, has avoided frequent and has changed the vexation that the sealing washer brought.
Description
Technical field
The utility model relates to valve field, specifically a kind of anti-silt device of bidirectional metallic seal butterfly valve bearing place.
Background technique
Bidirectional metallic seal butterfly valve reasonable mechanical structure, reliable, compression resistance is strong, it is reliable to open and close, and has positive and negative two way sealed function.In installation by MEDIA FLOW to restriction, also not by the impact of spatial position, can install arbitrarily on pipeline, butterfly valve shaft adopts semi-axis structure, valve plate adopts truss structure, mechanically reinforce with pin after axle and valve plate close fit, valve compressive strength is high, flow resistance is little, area of passage is large, save the energy.Due to the restriction of structure characteristic, inadaptable containing the operating mode such as silt, dust.The anti-sediment structure of existing bidirectional metallic seal butterfly valve adopts axle sleeve directly to compress two seal rings, seals.Because the seal ring in this sealing configuration is in compressive state always, after ring wear, not only affect axial seal, also affect valve plate sealing, therefore need periodic replacement, not only add maintenance cost, and change trouble.
Model utility content
The purpose of this utility model is the anti-silt device providing a kind of bidirectional metallic seal butterfly valve bearing place, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technological scheme:
A kind of anti-silt device of bidirectional metallic seal butterfly valve bearing place, comprise bearing, axle sleeve and seal ring, axle sleeve is set in outside bearing, and axle sleeve is fixed on bidirectional metallic seal butterfly valve valve body, seal ring totally two, and be located between end face of shaft bush and bidirectional metallic seal butterfly valve valve body, be shape metallic leak-proof structure between valve plate and bidirectional metallic seal butterfly valve valve body; The anti-silt device at described bidirectional metallic seal butterfly valve bearing place also comprises Thrust ring and one-way valve, Thrust ring is located between two seal rings, bidirectional metallic seal butterfly valve valve body is offered the through hole be communicated with Thrust ring in the external world, one-way valve is located at through hole outer end, is fixed between one-way valve and through hole by screw-thread fit.
As further program of the utility model: described Thrust ring totally two, and two Thrust ring close contacts.
Compared with prior art, the beneficial effects of the utility model are: 1, the anti-silt device at this bidirectional metallic seal butterfly valve bearing place, when ring wear is serious, filling sealing material is carried out by one-way valve, seal ring is made to keep sealing effect, therefore without the need to frequently changing seal ring, reducing maintenance cost, avoiding the frequent worry changed seal ring and bring.2, the anti-silt device at this bidirectional metallic seal butterfly valve bearing place, under normal circumstances, seal ring is only in Pre strained state, and be not in impaction state for a long time, therefore wear and tear less, the life-span is longer.
Accompanying drawing explanation
Fig. 1 is the structural representation of the anti-silt device at bidirectional metallic seal butterfly valve bearing place.
Fig. 2 is the partial schematic diagram of Fig. 1.
In figure: 1-bearing, 2-axle sleeve, 3-seal ring, 4-Thrust ring, 5-one-way valve.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 ~ 2, in the utility model embodiment, a kind of anti-silt device of bidirectional metallic seal butterfly valve bearing place, comprise bearing 1, axle sleeve 2 and seal ring 3, axle sleeve 2 is set in outside bearing 1, and axle sleeve 2 is fixed on bidirectional metallic seal butterfly valve valve body, seal ring 3 totally two, and be located between axle sleeve 2 end face and bidirectional metallic seal butterfly valve valve body, it is shape metallic leak-proof structure between valve plate and bidirectional metallic seal butterfly valve valve body, the anti-silt device at described bidirectional metallic seal butterfly valve bearing place also comprises Thrust ring 4 and one-way valve 5, Thrust ring 4 is located between two seal rings 3, bidirectional metallic seal butterfly valve valve body is offered the through hole be communicated with Thrust ring 4 in the external world, one-way valve 5 is located at through hole outer end, fixed by screw-thread fit between one-way valve 5 and through hole, preferably, described Thrust ring 4 totally two, and two Thrust ring 4 close contacts.
Working principle of the present utility model is: the anti-silt device at described bidirectional metallic seal butterfly valve bearing place, two seal rings 3 have selfsealings effect, and the decrement of seal ring 3 increases along with the increase of pipeline pressure, reduces and reduce.When seal ring 3 serious wear, carry out filling sealing material by one-way valve 5, making seal ring 3 keep sealing effect, therefore without the need to frequently changing seal ring 3, reducing maintenance cost, avoid the frequent worry changed seal ring and bring.Under normal circumstances, seal ring 3 is only in Pre strained state, and be not in impaction state for a long time, therefore wear and tear less, the life-span is longer.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any reference character in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to mode of execution, but not each mode of execution only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technological scheme in each embodiment also through appropriately combined, can form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (2)
1. the anti-silt device at a bidirectional metallic seal butterfly valve bearing place, comprise bearing (1), axle sleeve (2) and seal ring (3), axle sleeve (2) is set in bearing (1) outward, and axle sleeve (2) is fixed on bidirectional metallic seal butterfly valve valve body, seal ring (3) totally two, and be located between axle sleeve (2) end face and bidirectional metallic seal butterfly valve valve body, it is shape metallic leak-proof structure between valve plate and bidirectional metallic seal butterfly valve valve body, it is characterized in that, also comprise Thrust ring (4) and one-way valve (5), Thrust ring (4) is located between two seal rings (3), bidirectional metallic seal butterfly valve valve body is offered the through hole be communicated with Thrust ring (4) in the external world, one-way valve (5) is located at through hole outer end, fixed by screw-thread fit between one-way valve (5) and through hole.
2. the anti-silt device at bidirectional metallic seal butterfly valve bearing place according to claim 1, is characterized in that, described Thrust ring (4) totally two, and two Thrust ring (4) close contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479641.XU CN204785019U (en) | 2015-07-07 | 2015-07-07 | Two -way metal seal butterfly valve bearing department prevents silt device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479641.XU CN204785019U (en) | 2015-07-07 | 2015-07-07 | Two -way metal seal butterfly valve bearing department prevents silt device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204785019U true CN204785019U (en) | 2015-11-18 |
Family
ID=54525068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520479641.XU Expired - Fee Related CN204785019U (en) | 2015-07-07 | 2015-07-07 | Two -way metal seal butterfly valve bearing department prevents silt device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204785019U (en) |
-
2015
- 2015-07-07 CN CN201520479641.XU patent/CN204785019U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160707 |