CN201866253U - Anhydrous mechanical seal with self-circulation function - Google Patents
Anhydrous mechanical seal with self-circulation function Download PDFInfo
- Publication number
- CN201866253U CN201866253U CN2010206041553U CN201020604155U CN201866253U CN 201866253 U CN201866253 U CN 201866253U CN 2010206041553 U CN2010206041553 U CN 2010206041553U CN 201020604155 U CN201020604155 U CN 201020604155U CN 201866253 U CN201866253 U CN 201866253U
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- China
- Prior art keywords
- ring
- seal
- mechanical seal
- self
- components
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000003068 static effect Effects 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 9
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Mechanical Sealing (AREA)
Abstract
The utility model belongs to the field of mechanical seals, particularly relates to an anhydrous mechanical seal with a self-circulation function. A moving ring component of the anhydrous mechanical seal is arranged in a sealed cavity with fluids, a spiral groove is processed on the outer surface of the moving ring component, and sealed end faces of the moving ring component and a static ring component are sealed in a tightly pressed manner by elastic elements. The anhydrous mechanical seal is simple in structure, easy in manufacture and installation, sufficient and reliable in cooling and lubricating and long in service life, and is capable of improving the flowing state of the fluids.
Description
Technical field
The utility model belongs to the mechanical seal field, especially relates to a kind of anhydrous mechanical seal with self-loopa effect.
Background technique
Mechanical seal is fluid machinery gland seal devices commonly used such as centrifugal pump.For the working life of prolonged mechanical sealing, often need add sparge water for the mechanical seal of carrying the solid-liquid two-phase flow medium pump.A kind of scheme is a high pressure washing, makes the pressure of sparge water be higher than Seal cage pressure 0.1～0.2MPa, then sparge water is sent into Seal cage, enters Seal cage behind the sparge water flushing seal face.This scheme developing result is good, but after a large amount of sparge waters enters Seal cage, will cause the loss of the diluted and sparge water of fed sheet of a media.Another kind of scheme is a low-pressure washing, adopts Double End structure or similar structure, and low-pressure washing water is placed the inboard of main seal ring, and the inboard of seal ring is lubricated and cools off.The cooling and lubricating effect of this flushing scheme is poorer slightly than high pressure washing, but it is little that sparge water enters the possibility of Seal cage, but will increase the seal arrangement of a sealing low pressure water, this may be light-duty machinery sealing or outside framework oil seal, this has increased the complexity of system and the cost of sealing, also must consume sparge water simultaneously.
In recent years, many sealing users propose one after another, wish to adopt the mechanical seal that does not need the water flushing, and some anhydrous mechanical seal device have also appearred in promptly anhydrous mechanical seal.But because no sparge water, only depend on fed sheet of a media itself that seal face is cooled off, lubricates, for the situation of low pressure and low speed still can, to the operating mode of high pv value, sealing life, very short problem was not resolved always.
Summary of the invention
The purpose of this utility model is at existing anhydrous mechanical seal poor lubrication, the problem serious, that the life-span is short of generating heat, and a kind of fluid flow state that improves is provided, and cooling and lubricating is abundant, reliable, the anhydrous mechanical seal device of life-span length.
The utility model is to solve the problems of the technologies described above the technological scheme that adopts to be: on the seal arrangement basis that the moving ring assembly and the static components of routine assembling constitutes, carry out following improvement: moving ring assembly is arranged in the Seal cage of band fluid, the outer surface of moving ring assembly is processed with spiral groove, and the seal face of moving ring assembly and static components compresses sealing by elastic element.The effect of the spiral groove on the moving ring assembly is, make under the thrust of medium when high speed rotating in the Seal cage, flow to seal face or the seal face of wandering about as a refugee, realized adopting fully medium that seal face is cooled off, lubricates, and can also impel the circulation of fluid in the Seal cage to improve.
Moving ring assembly described in the utility model is and the rotating ring components of the fixing ring set structure of rotating shaft, and spiral groove is arranged on its external cylindrical surface, the fixing rotating ring of wear-resistant material in the rotating ring components inner cavity; The end cap of static components and Seal cage is fixed, the fixing stationary ring of wear-resistant material in its inner cavity, and the stationary ring end face contacts with the rotating ring end face seal.
The material of stationary ring and rotating ring adopts silicon carbide or cemented carbide; The spiral groove of rotating ring components adopts left-handed, dextrorotation or two-way rotational structure according to actual conditions, and pitch adopts permanent pitch or variable pitch, and the screw channel sectional shape adopts triangle, trapezoidal, rectangle, semicircle or other shape.
The beneficial effects of the utility model are: compared with prior art, remarkable advantage has been to strengthen flowing of sealing medium, greatly improve the lubricated cooling effect of medium to seal face, make the life-span of anhydrous mechanical seal obtain very big prolongation, solved the complex structure of hydraulic pressure flushing sealing simultaneously, problems such as consumption of water resource.
Description of drawings
Further describe the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present utility model.
Each label is represented successively among the figure: moving ring assembly 1, spiral groove 2, rotating ring 3, seal face 4, stationary ring 5, elastic element 6, static components 7, rotating shaft 8.
Embodiment
As shown in Figure 1.The sealing device is the single end face structure, does not need to add cooling water, has the self-loopa effect, promptly a kind of anhydrous mechanical seal with self-loopa effect.
This mechanical seal is made of moving ring assembly 1 and static components 7.Moving ring assembly 1 is and the rotating ring components of the fixing ring set structure of rotating shaft 8, and spiral groove 2 is arranged on its external cylindrical surface, and is positioned at Seal cage, packs in the inner cavity of this ring set and the fixing rotating ring 3 of silicon carbide material; Static components 6 is fixed with the end cap of Seal cage, pack in its inner cavity and the fixing stationary ring 5 of silicon carbide material, stationary ring 5 can move axially along rotating shaft 8, stationary ring 5 end faces and rotating ring 3 end faces compress sealing (also can adopt rotating ring 3 to move axially and rotate, the elastic element 6 by synchronous rotation compresses again) by the outer elastic element of installing 6 of Seal cage.The spiral groove 2 of rotating ring components can decide according to actual conditions, can adopt left-handed, dextrorotation or two-way rotational structure, pitch permanent pitch of also corresponding employing or variable pitch, screw channel cross section 2 shapes can adopt triangle, trapezoidal, rectangle, semicircle or other shape, can also can process the back separately and fit together directly in the sleeve surface processing of rotating ring components with rotating ring components.Play the rotating ring 3 of seal action and stationary ring 5 can silicon carbide material except the material of available manufacturing, can also adopt wear-resistant seal materials such as cemented carbide.
Claims (3)
1. anhydrous mechanical seal device with self-loopa effect, moving ring assembly and static components by assembling constitute, it is characterized in that: moving ring assembly is arranged in the Seal cage of band fluid, the outer surface of moving ring assembly is processed with spiral groove, and the seal face of moving ring assembly and static components compresses sealing by elastic element.
2. the anhydrous mechanical seal device with self-loopa effect as claimed in claim 1, it is characterized in that: moving ring assembly for the rotating ring components of the fixing ring set structure of rotating shaft, spiral groove is arranged on its external cylindrical surface, the fixing rotating ring of wear-resistant material in the rotating ring components inner cavity; The end cap of static components and Seal cage is fixed, the fixing stationary ring of wear-resistant material in its inner cavity, and the stationary ring end face contacts with the rotating ring end face seal.
3. the anhydrous mechanical seal device with self-loopa effect as claimed in claim 2 is characterized in that: the material of stationary ring and rotating ring adopts silicon carbide or cemented carbide; The spiral groove of rotating ring components adopts left-handed, dextrorotation or two-way rotational structure according to actual conditions, and pitch adopts permanent pitch or variable pitch, and the screw channel sectional shape adopts triangle, trapezoidal, rectangle or semicircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206041553U CN201866253U (en) | 2010-11-12 | 2010-11-12 | Anhydrous mechanical seal with self-circulation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206041553U CN201866253U (en) | 2010-11-12 | 2010-11-12 | Anhydrous mechanical seal with self-circulation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201866253U true CN201866253U (en) | 2011-06-15 |
Family
ID=44137409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206041553U Expired - Fee Related CN201866253U (en) | 2010-11-12 | 2010-11-12 | Anhydrous mechanical seal with self-circulation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201866253U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011868A (en) * | 2010-11-12 | 2011-04-13 | 昆明嘉和科技股份有限公司 | Anhydrous mechanical seal with self-circulation function |
| CN106969148A (en) * | 2017-04-05 | 2017-07-21 | 昆明理工大学 | It is a kind of to be pumped into formula Spiral Groove Dry Gas Seals by Use structure with convergence type seal clearance |
| CN109642676A (en) * | 2016-06-28 | 2019-04-16 | 福斯管理公司 | Dry-running end surface mechanical sealing part |
-
2010
- 2010-11-12 CN CN2010206041553U patent/CN201866253U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011868A (en) * | 2010-11-12 | 2011-04-13 | 昆明嘉和科技股份有限公司 | Anhydrous mechanical seal with self-circulation function |
| CN109642676A (en) * | 2016-06-28 | 2019-04-16 | 福斯管理公司 | Dry-running end surface mechanical sealing part |
| CN106969148A (en) * | 2017-04-05 | 2017-07-21 | 昆明理工大学 | It is a kind of to be pumped into formula Spiral Groove Dry Gas Seals by Use structure with convergence type seal clearance |
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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: 20110615 Termination date: 20121112 |