CN201357068Y - Pressure-resistant corrosion-resistant mechanical seal for kettles - Google Patents
Pressure-resistant corrosion-resistant mechanical seal for kettles Download PDFInfo
- Publication number
- CN201357068Y CN201357068Y CNU2009200031606U CN200920003160U CN201357068Y CN 201357068 Y CN201357068 Y CN 201357068Y CN U2009200031606 U CNU2009200031606 U CN U2009200031606U CN 200920003160 U CN200920003160 U CN 200920003160U CN 201357068 Y CN201357068 Y CN 201357068Y
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- China
- Prior art keywords
- mechanical seal
- friction pair
- corrosion
- resistant
- corrugated tube
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- Expired - Fee Related
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- Mechanical Sealing (AREA)
- Diaphragms And Bellows (AREA)
Abstract
Disclosed is a pressure-resistant corrosion-resistant mechanical seal for kettles. The mechanical seal is capable of resisting corrosion and simultaneously resisting comparatively high pressure. The mechanical seal adopts a double end face corrugated tube mechanical sealing structure, and a corrosion-resistant 212 type single end face corrugated tube mechanical sealing structure is applied to resist corrosion at a medium end of a double end face corrugated tube mechanical seal. A medium end friction pair, an air end friction pair and other components of the mechanical seal are employed simultaneously to seal sealing liquids, wherein the medium end friction pair is formed by a rotating seal ring component and a stationary seal ring of a corrosion-resistant polytetrafluoroethylene corrugated tube. When in operation, a comparatively low differential pressure is retained between circulatory sealing liquids and media. Even though working medium pressure is comparatively high, the rotating seal ring component of the polytetrafluoroethylene corrugated tube bears relatively low differential pressure. The sealing liquids carry off the heat produced by friction of the friction pairs during the process of circulation, and then the double end face corrugated tube mechanical seal is capable of not only resisting corrosion but also resisting comparatively high pressure.
Description
Technical field
The utility model is a vesselseals, and the still of more specifically saying so is with withstand voltage anticorrosive mechanical seal.
Background technology
In agitating device, mechanical seal is key components, when medium in the still has than severe corrosive, can only select 212 type single end face bellows mechanical seals and 221 type radial double mechanical seals in the HG2057/T-2003 standard.212 type single end face bellows mechanical seals adopt erosion-resisting polytetrafluoroethylbellows bellows moving ring assembly and stationary ring to form friction pair, the special construction of polytetrafluoroethylbellows bellows moving ring assembly has saved the pair sealing in the common mechanical seal structure, therefore metal surface lining teflon cover layer has corrosion resistance; 221 type radial double mechanical seals have been isolated mechanical seal metal surface and medium with secondary sealing of polytetrafluoroethylene (PTFE) and carborundum axle sleeve, have corrosion resistance equally.Limited by hermetically-sealed construction and intensity, 212 type single end face bellows mechanical seal operating pressures can only be below 0.4MPa, and 221 type radial double mechanical seal operating pressures also can only be below 1.0MPa.
Summary of the invention
The utility model provides a kind of still with withstand voltage anticorrosive mechanical seal, can the anticorrosive elevated pressures of ability again.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: adopt axial Double End bellows mechanical seal structure, the media end, erosion-resisting polytetrafluoroethylbellows bellows moving ring assembly and the stationary ring composition media end friction pair that the corrosion resistance structure of 212 type single end face bellows mechanical seals are used for axial Double End bellows mechanical seal.Be closed with sealing fluid between media end friction pair, atmosphere end friction pair, seal case and the sealing case lid.Make the sealing fluid and the medium of circulation keep less pressure reduction 0.00～0.15MPa during work, even working medium pressure is higher, but the pressure reduction that the polytetrafluoroethylbellows bellows moving ring assembly bears is also little, and sealing fluid is taken away the fricative heat of friction pair in cyclic process.The side medium metal surface lining teflon cover layer of media end.The sealing of this construction machine can withstand voltage 2.4MPa.
Another kind design as utility model, adopt radial direction double end-face bellows mechanical seal structure, the media end, erosion-resisting polytetrafluoroethylbellows bellows moving ring assembly and the stationary ring composition media end friction pair that the corrosion resistance structure of 212 type single end face bellows mechanical seals are used for the radial direction double end-face bellows mechanical seal.The shared same stationary ring of media end and atmosphere end friction pair.Be closed with sealing fluid between media end friction pair, atmosphere end friction pair, stationary seat flange and the rotating seat.Make the sealing fluid and the medium of circulation keep less pressure reduction 0.00～0.15MPa during work, even working medium pressure is higher, but the pressure reduction that the polytetrafluoroethylbellows bellows moving ring assembly bears is also little, and sealing fluid is taken away the fricative heat of friction pair in cyclic process.The side medium metal surface lining teflon cover layer of media end.The sealing of this construction machine can withstand voltage 1.6MPa.
The radial direction double end-face bellows mechanical seal is lower than the voltage endurance capability of axial Double End bellows mechanical seal, but its superiority is when the mechanical seal installing space is restricted, the radial direction double end-face bellows mechanical seal is short more a lot of than axial Double End bellows mechanical seal, is convenient to install and use.
The beneficial effects of the utility model are at the higher pressure of ability again of erosion-resisting while.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 be still with first example structure schematic diagram of withstand voltage anticorrosive mechanical seal, be called axial Double End bellows mechanical seal.
Fig. 2 be still with second example structure schematic diagram of withstand voltage anticorrosive mechanical seal, be called the radial direction double end-face bellows mechanical seal.
Among the figure, 1. lining teflon cover layer, 2. seal case, 3. stationary ring, 4. polytetrafluoroethylbellows bellows moving ring assembly, 5. axle sleeve, 6. atmosphere end friction pair, 7. sealing case lid, 8. axle sleeve fastener, 9. spool, 10. sealing fluid, 11. media, 12. stationary seat flanges, 13. rotating seats.
The specific embodiment
In axial Double End bellows mechanical seal embodiment shown in Figure 1, seal case (2) is installed and is positioned on the still mouth flange, polytetrafluoroethylbellows bellows moving ring assembly (4) is positioned at rotation thereupon on the axle (9) by axle sleeve (5) and axle sleeve fastener (8) installation, goes up the corrosion that lining teflon cover layer (1) can both resist medium (11) by media end friction pair and seal case (2) that stationary ring (3) and polytetrafluoroethylbellows bellows moving ring assembly (4) are formed.Media end friction pair of being made up of stationary ring (3) and polytetrafluoroethylbellows bellows moving ring assembly (4) and atmosphere end friction pair (6), seal case (2), sealing case lid (7) be close encapsulation liquid (10) together.
In radial direction double end-face bellows mechanical seal embodiment shown in Figure 2, stationary seat flange (12) is installed and is positioned on the still mouth flange, polytetrafluoroethylbellows bellows moving ring assembly (4) is installed to be positioned on the axle (9) by rotating seat (13) and is rotated thereupon, goes up the corrosion that lining teflon cover layer (1) can both resist medium (11) by media end friction pair and stationary seat flange (12) that stationary ring (3) and polytetrafluoroethylbellows bellows moving ring assembly (4) are formed.Media end friction pair of being made up of stationary ring (3) and polytetrafluoroethylbellows bellows moving ring assembly (4) and atmosphere end friction pair (6), stationary seat flange (12), rotating seat (13) be close encapsulation liquid (10) together.
Claims (6)
1. still is with withstand voltage anticorrosive mechanical seal, adopt axial Double End bellows mechanical seal structure, form by the sealing fluid that media end friction pair, atmosphere end friction pair, seal case, sealing case lid and they are sealed, it is characterized in that the media end friction pair is made up of erosion-resisting polytetrafluoroethylbellows bellows moving ring assembly and stationary ring.
According to the described still of claim 1 with withstand voltage anticorrosive mechanical seal, it is characterized in that the side medium metal surface lining teflon cover layer of media end.
According to the described still of claim 1 with withstand voltage anticorrosive mechanical seal, sealing fluid that circulates when it is characterized in that work and medium keep less pressure reduction 0.00～0.15MPa.
4. still is with withstand voltage anticorrosive mechanical seal, adopt radial direction double end-face bellows mechanical seal structure, form by the sealing fluid that media end friction pair, atmosphere end friction pair, stationary seat flange, rotating seat and they are sealed, it is characterized in that the media end friction pair is made up of erosion-resisting polytetrafluoroethylbellows bellows moving ring assembly and stationary ring.
According to the described still of claim 4 with withstand voltage anticorrosive mechanical seal, it is characterized in that the side medium metal surface lining teflon cover layer of media end.
According to the described still of claim 4 with withstand voltage anticorrosive mechanical seal, make the sealing fluid of circulation and medium keep less pressure reduction 0.00～0.15MPa when it is characterized in that work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200031606U CN201357068Y (en) | 2009-01-10 | 2009-01-10 | Pressure-resistant corrosion-resistant mechanical seal for kettles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200031606U CN201357068Y (en) | 2009-01-10 | 2009-01-10 | Pressure-resistant corrosion-resistant mechanical seal for kettles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201357068Y true CN201357068Y (en) | 2009-12-09 |
Family
ID=41422825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200031606U Expired - Fee Related CN201357068Y (en) | 2009-01-10 | 2009-01-10 | Pressure-resistant corrosion-resistant mechanical seal for kettles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201357068Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422860A (en) * | 2014-09-19 | 2016-03-23 | 天津市富鑫达密封有限公司 | Novel mechanical sealing device with two radial end faces for kettle |
| CN106838321A (en) * | 2017-03-13 | 2017-06-13 | 浙江长城搅拌设备股份有限公司 | Kettle side entering type mechanical seal |
| CN106958535A (en) * | 2017-05-19 | 2017-07-18 | 强胜精密机械(苏州)有限公司 | Double suction Turo pump |
| CN108005947A (en) * | 2017-12-12 | 2018-05-08 | 浙江胜发泵业有限公司 | Rotary-jet pump packaging type radial double mechanical seal |
-
2009
- 2009-01-10 CN CNU2009200031606U patent/CN201357068Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422860A (en) * | 2014-09-19 | 2016-03-23 | 天津市富鑫达密封有限公司 | Novel mechanical sealing device with two radial end faces for kettle |
| CN106838321A (en) * | 2017-03-13 | 2017-06-13 | 浙江长城搅拌设备股份有限公司 | Kettle side entering type mechanical seal |
| CN106958535A (en) * | 2017-05-19 | 2017-07-18 | 强胜精密机械(苏州)有限公司 | Double suction Turo pump |
| CN108005947A (en) * | 2017-12-12 | 2018-05-08 | 浙江胜发泵业有限公司 | Rotary-jet pump packaging type radial double mechanical seal |
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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: 20091209 Termination date: 20150110 |
|
| EXPY | Termination of patent right or utility model |