CN201225401Y - Spiral groove end plane adverse current mechanical sealing device - Google Patents
Spiral groove end plane adverse current mechanical sealing device Download PDFInfo
- Publication number
- CN201225401Y CN201225401Y CNU2008200138257U CN200820013825U CN201225401Y CN 201225401 Y CN201225401 Y CN 201225401Y CN U2008200138257 U CNU2008200138257 U CN U2008200138257U CN 200820013825 U CN200820013825 U CN 200820013825U CN 201225401 Y CN201225401 Y CN 201225401Y
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Abstract
The utility model provides a counterflow mechanical seal device for a spiral groove end surface of a fluid machine rotating shaft, which is mainly characterized in that a front seal of a process medium side adopts a zero emission seal structure, and a post seal adopts a zero leakage seal structure, wherein the front seal and the post seal are arranged together to form a combined structure of the zero emission seal and the zero leakage seal. The counterflow mechanical seal device has the advantages that the front seal and the post seal can run in a non-contact way, meanwhile, the front seal is not emitted, and the post seal does not leak, thus the utility model is enabled to realize that under the condition of the use of work condition, process medium is not emitted, seal liquid does not leak outwards, and the utility model can run safely and steadily in long period. The utility model is suitable for the rotating shaft seal of various fluid machines, especially suitable for the seal of industrial fluid with the characteristics of extreme toxicity, high price, high pollution, flammability, explosiveness, easy gasification, and the like in industries of chemical industry, oil chemical industry, metallurgy, medicine, and the like.
Description
Technical field:
The utility model relates to a kind of spiral chute end surface mechanical sealing technical field.Particularly a kind of spiral chute end face adverse current mechanical seal device that is used for the fluid machinery running shaft.
Background technique:
The sealing of spiral chute end face adverse current is a kind of non-contact mechanical seal based on the hydrldynamic pressure lubrication theory.It can realize the zero leakage or zero effusion of processing medium.
Usually, the processing medium side that the sealing of spiral chute end face adverse current is sealed is the high pressure side, and atmosphere or buffer solution side are the low-pressure side.The fluid of high pressure side claims pressure reduction to flow to the low-pressure side flow.When rotating ring rotated, the hydrodynamic effect that spiral chute produces made the fluid of low-pressure side, formed sticky shearing and flowed.The mobile direction of the direction that sticky shearing flows and pressure reduction opposite (from the low-pressure effluent to the high pressure side), promptly alleged adverse current.Spiral groove end sealer by adverse current stops processing medium to leak is called the mechanical seal of spiral chute end face adverse current.
Overflow in known zero leakage and zero, in the spiral chute end face adverse current mechanical seal of two kinds of structural types.The mechanical seal of zero leakage spiral chute end face adverse current does not need auxiliary system, but bearing capacity is low, anti-solid particle ability.Zero effusion spiral chute end face adverse current mechanical seal, bearing capacity is big, and anti-solid particle ability is strong, needs auxiliary system and provides sealing fluid to Seal cage.And rearmounted sealing life and primary seal life-span that Seal cage adopts do not match.Seriously undermined the advantage of spiral chute end face adverse current mechanical seal leakage, long lifetime and security of operation.
Summary of the invention:
The purpose of this utility model is the deficiency that exists in the above-mentioned technology, and a kind of tandem spiral chute end face adverse current mechanical seal that is combined into by zero effusion and two kinds of sealing configurations of zero leakage is provided.The spiral chute end face adverse current mechanical seal of this novel series-mode frame has possessed the whole advantages of zero leakage with zero effusion single structure adverse current mechanical seal, has overcome the deficiency of zero leakage and zero effusion single structure adverse current mechanical seal.Can realize safe, stable, the long-term operation of applying working condition.
The purpose of this utility model is achieved in that it comprises preposition sealing and rearmounted sealing, preposition sealing is by preposition sealing rotating ring, preposition sealing stationary ring, seal ring, spring, preposition sealing seat is formed, rearmounted sealing is by spacer sleeve, axle sleeve, rearmounted sealing rotating ring, rearmounted sealing stationary ring, lock sleeve, seal ring, spring, preposition sealing seat is formed, it is characterized in that, the preposition sealing of processing medium side, adopt zero effusion sealing configuration, preposition sealing rotating ring is installed on the axle sleeve, preposition sealing stationary ring, seal ring, spring, be installed on the preposition sealing seat, the zero leakage sealing configuration is adopted in rearmounted sealing.Zero effusion sealing configuration, spacer sleeve is installed on the axle sleeve, and compresses preposition sealing rotating ring, rearmounted sealing rotating ring is locked with lock sleeve, postposition seals stationary ring, seal ring, spring, is installed on the rearmounted sealing seat, and preposition sealing and rearmounted sealing are installed together.
The utility model has the advantages that: preposition sealing all can realize the non-contact operation with rearmounted sealing, and simultaneously, preposition sealing zero is overflowed, rearmounted sealing zero leakage.The utility model has been realized under the applying working condition condition, and processing medium zero is overflowed, and sealing fluid is to extraneous zero leakage, and can safety, stable, long-term operation.The utility model is suitable for the rotating shaft sealing of various fluid machineries.Be particularly suitable for having severe toxicity in the industries such as chemical industry, petrochemical industry, metallurgy, electric power, medicine, the sealing of industrial fluids such as costliness, high pollution, inflammable, explosive, easy gasification.
Description of drawings:
Fig. 1 is the structural drawing of spiral chute end face adverse current of the present utility model mechanical seal
Fig. 2 is the zero single-row spiral fluted structural drawing of effusion sealing configuration of the present utility model
Fig. 3 is the structural drawing of the utility model zero leakage sealing configuration double spiral groove
1-axle sleeve, 2-rubber seal 3-preposition sealing rotating ring 4-preposition stationary ring 5-rubber seal 6-spring 7-preposition sealing seat 8-spacer sleeve 9-postposition sealing rotating ring 10-rearmounted stationary ring 11-rearmounted sealing seat 12-lock sleeve 13-high pressure side spiral chute 14-sealing dam 15-low-pressure side spiral chute
Embodiment:
Below in conjunction with accompanying drawing present embodiment is described further:
As shown in Figure 1, in the structure of spiral chute end face adverse current of the present utility model mechanical seal, zero effusion sealing configuration has been adopted in preposition sealing.Be about to preposition sealing rotating ring 3 and be installed on the axle sleeve 1, preposition sealing stationary ring 4, rubber seal 5, spring 6 are installed in the preposition sealing of formation in the preposition sealing seat 7.As previously mentioned, the seal face Design and Machining of zero effusion sealing configuration has spiral chute shown in Figure 2, and it can realize the non-contact operation, and bearing capacity is big, and anti-solid particle ability is strong, and processing medium zero is overflowed and the long lifetime.The zero leakage sealing configuration is adopted in rearmounted sealing.Be about to spacer sleeve 8 and be installed on the axle sleeve 1, and compress preposition sealing rotating ring 3.After rearmounted sealing rotating ring 9 is installed, use lock sleeve 12 with its locking.Postposition is sealed stationary ring 10, rubber seal 5, spring 6 to be installed in and to constitute rearmounted sealing in the rearmounted sealing seat 11.The zero leakage sealing configuration does not need auxiliary system, and bearing capacity is low, anti-solid particle ability, and sealing fluid should be removed the solid particle greater than 1 μ m.But it can realize non-contact operation, zero leakage and long lifetime.
Preposition sealing and rearmounted sealing are installed together, just constitute spiral chute end face adverse current of the present utility model mechanical seal.
Claims (4)
1, a kind of spiral chute end face adverse current mechanical seal device, it comprises preposition sealing and rearmounted sealing, preposition sealing is by preposition sealing rotating ring, preposition sealing stationary ring, seal ring, spring, preposition sealing seat is formed, rearmounted sealing is by spacer sleeve, axle sleeve, rearmounted sealing rotating ring, rearmounted sealing stationary ring, lock sleeve, seal ring, spring, preposition sealing seat is formed, it is characterized in that, the preposition sealing of processing medium side, adopt zero effusion sealing configuration, preposition sealing rotating ring is installed on the axle sleeve, preposition sealing stationary ring, seal ring, spring, be installed on the preposition sealing seat, the zero leakage sealing configuration is adopted in rearmounted sealing, zero effusion sealing configuration, spacer sleeve is installed on the axle sleeve, and compress preposition sealing rotating ring, rearmounted sealing rotating ring is locked with lock sleeve, rearmounted sealing stationary ring, seal ring, spring, be installed on the rearmounted sealing seat, preposition sealing and rearmounted sealing are installed together.
2, spiral chute end face adverse current mechanical seal device according to claim 1, the end face of rotating ring or stationary ring can be made into single-row helical groove structure.
3, according to the described spiral chute end face of claim 1 adverse current mechanical seal device, the end face of rotating ring or stationary ring can be made into the double spiral groove structure.
4. according to claim 1 or 2 or 3 described spiral chute end face adverse current mechanical seal device, the end face spiral chute of rotating ring or stationary ring can be a curve, also can be straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200138257U CN201225401Y (en) | 2008-07-04 | 2008-07-04 | Spiral groove end plane adverse current mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200138257U CN201225401Y (en) | 2008-07-04 | 2008-07-04 | Spiral groove end plane adverse current mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201225401Y true CN201225401Y (en) | 2009-04-22 |
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ID=40598287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200138257U Expired - Fee Related CN201225401Y (en) | 2008-07-04 | 2008-07-04 | Spiral groove end plane adverse current mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201225401Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235372A (en) * | 2014-08-29 | 2014-12-24 | 江苏大学 | Dynamic pressure tank mechanical seal structure with improved liquid film cavitation characteristic |
| CN107166036A (en) * | 2017-06-21 | 2017-09-15 | 浙江工业大学 | A kind of low leakage helicla flute liquid film mechanical sealing end face structure |
-
2008
- 2008-07-04 CN CNU2008200138257U patent/CN201225401Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235372A (en) * | 2014-08-29 | 2014-12-24 | 江苏大学 | Dynamic pressure tank mechanical seal structure with improved liquid film cavitation characteristic |
| CN107166036A (en) * | 2017-06-21 | 2017-09-15 | 浙江工业大学 | A kind of low leakage helicla flute liquid film mechanical sealing end face structure |
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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: 20090422 Termination date: 20150704 |
|
| EXPY | Termination of patent right or utility model |