CN103821942A - Double mechanical sealing method and double mechanical sealing device for kettle gas films - Google Patents
Double mechanical sealing method and double mechanical sealing device for kettle gas films Download PDFInfo
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- CN103821942A CN103821942A CN201310276767.2A CN201310276767A CN103821942A CN 103821942 A CN103821942 A CN 103821942A CN 201310276767 A CN201310276767 A CN 201310276767A CN 103821942 A CN103821942 A CN 103821942A
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Abstract
The invention discloses a double mechanical sealing method and a double mechanical sealing device for kettle gas films, and belongs to the field of machine manufacture. The double mechanical sealing device mainly comprises a shaft sleeve, a moving-ring seat, a stationary ring, a stationary-ring press plate, a moving ring, a bearing, a stationary-ring seat, an auxiliary seal and the like. The double mechanical sealing method is characterized in that a back-to-back rotating double-end-face structure is adopted for sealing to realize non-contact operation, and a fluid dynamic-pressure groove is formed in the end face of the seal stationary ring; high-pressure isolating gas is injected between two sealing structures, and a spring is not affected by solid particles and impurities in media as not contacting with the media; the stationary ring which is supported by two O-shaped rings and is positioned by the press plate can bear back pressure; a cartridge structure is adopted. The double mechanical sealing method and the double mechanical sealing device have the advantages that an auxiliary system is simple in structure and can ensure technological media to be prevented from pollution, leakage and overflow of sealed media can be completely avoided, and no environmental pollution is caused; through the cartridge structure, accuracy, convenience and rapidness in overall mounting are realized, and demounting is facilitated. The device is applicable to various blenders, reactors, dryers, reaction kettles, polymerizers and the like in the fields of petroleum, chemical engineering, pharmacy, rubber, oil refining and the like.
Description
Technical field
The present invention relates to a kind of still air film double mechanical seal method and device, the mechanical seal that is mainly used in various stirrers, reactor, dryer, reactor, polymeric kettle etc. in the system fields such as oil, chemical industry, pharmacy, rubber, oil refining, belongs to mechanized equipment manufacturing technology field.
Background technique
Reactor is one of key equipment in petrochemical industry, chemical fibre, pharmaceutical manufacturing, it is compared with other rotating machineries with pump, there is unique service condition and operating feature, therefore, although vesselseals is identical with mechanical seal for pump action principle, vesselseals is because the particularity of its working condition has another system of one's own.
Described in " machinery " the 26th volume the 5th phase P23 in 1999, (Fig. 1) must input the cooling liquid higher than pressure medium from A entrance.Therefore, this mechanism's mechanical seal must configure high pressure cooling recirculation system, has increased investment.Generally all join high-voltage oil liquid cooling recirculation system; Because coolant pressure is high, whole seal chamber is required to improve.Seal chamber, axle sleeve and machine sealing assembly must be designed to unit loading type, have increased cost.
Summary of the invention
For above-mentioned deficiency, the invention provides a kind of still air film double mechanical seal method and device.
The present invention is achieved by the following technical solutions: a kind of still gas-film double-surface mechanical seal, is made up of bolt, kettle O shape circle, stationary ring, stationary ring pressing plate, rotating ring snap ring, rotating ring, spring, rotating seat, housing, axle sleeve, stationary ring O shape circle, stationary seat, oil sealing, bearing housing, bearing, bearing gland, collection load, screw, transmission pin, transmission ring, transmission ring screw and lifting bolt.It is characterized in that: bolt is arranged on housing, kettle O shape circle is arranged on stationary seat, stationary ring adopts two O rings to support and rely on stationary ring pressing plate location, stationary ring and rotating ring counterface are offered fluid dynamic pressure groove grooved, above rotating ring, connecting rotating ring snap ring, spring is connected with rotating ring with rotating seat, rotating seat is connected with axle sleeve, quiet annular ring is arranged on stationary ring, oil sealing is connected with stationary seat, bearing housing relies on lifting bolt to be arranged on housing, bearing is connected with axle sleeve, bearing gland is arranged on bearing housing, collection load is connected with axle sleeve, on collection load, screw is installed, transmission pin and transmission ring are all arranged on axle sleeve, transmission ring screw is installed on transmission ring.
The present invention also provides a kind of still air film double mechanical seal method, it is characterized in that: sealing adopts rotary Double End structure back-to-back, contactless running; Stationary seal ring end face is offered fluid dynamic pressure groove; Between two groups of sealings, pass into the separation gas of relatively high pressure; Spring not with medium contact, avoid the impact of solid particle and impurity in medium; Stationary ring adopts the support of two O ring, pressing plate location, can bear back-pressure; Adopt unit loading type structure, this method provides effect and the advantage identical with seal arrangement.
The usefulness of this invention is: auxiliary system is simple in structure and can guarantee that processing medium is not contaminated, can realize sealed medium zero leakage, zero overflows, environmentally safe, unit loading type structure, integral installation is accurate, convenient, easy accessibility, applicability is wide, also applicable to various stirrers, reactor, dryer, reactor, polymeric kettle etc. in the system fields such as oil, chemical industry, pharmacy, rubber, oil refining.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of a kind of still air film double mechanical seal method and device, Fig. 2 is the sealing configuration enlarged diagram of a kind of still air film double mechanical seal method and device, and Fig. 3 is the stationary ring end face fluid dynamic pressure groove grooved schematic diagram of a kind of still air film double mechanical seal method and device.
In Fig. 1: 1. bolt, 2. kettle O shape circle, 3. stationary ring, 4. stationary ring pressing plate, 5. rotating ring snap ring, 6. rotating ring, 7. spring, 8. rotating seat, 9. housing, 10. axle sleeve, 11. stationary ring O shape circles, 12. stationary seats, 13. oil sealings, 14. bearing housings, 15. bearings, 16. bearing glands, 17. collection loads, 18. screws, 19. transmission pins, 20. transmission rings, 21. transmission ring screws, 22. lifting bolts.
Embodiment
A kind of still air film double mechanical seal method and device are by bolt 1, kettle O shape circle 2, stationary ring 3, stationary ring pressing plate 4, rotating ring snap ring 5, rotating ring 6, spring 7, rotating seat 8, housing 9, axle sleeve 10, stationary ring O shape circle 11, stationary seat 12, oil sealing 13, bearing housing 14, bearing 15, bearing gland 16, collection load 17, screw 18, transmission pin 19, transmission ring 20, transmission ring screw 21 and lifting bolt 22 form, it is characterized in that: bolt 1 is arranged on housing 9, kettle O shape circle 2 is arranged on stationary seat 12, stationary ring 3 adopts two O rings support and rely on stationary ring pressing plate 4 to locate, stationary ring 3 is offered fluid dynamic pressure groove grooved with rotating ring 6 counterfaces, rotating ring 6 is connecting rotating ring snap ring 5 above, spring 7 is connected with rotating ring 6 with rotating seat 8, rotating seat 8 is connected with axle sleeve 10, stationary ring O shape circle 11 is arranged on stationary ring, and oil sealing 13 is connected with stationary seat 12, and bearing housing 14 relies on lifting bolt 22 to be arranged on housing 9, bearing 15 is connected with axle sleeve 10, bearing gland 16 is arranged on bearing housing 14, and collection load 17 is connected with axle sleeve 10, on collection load 17, screw 18 is installed, transmission pin 19 and transmission ring 20 are all arranged on axle sleeve 10, and transmission ring screw 21 is installed on transmission ring 20.
In the time of device work, in middle cavity, be filled with clean barrier gas, generally adopt industrial nitrogen, its pressure is higher than Seal cage pressure medium 0.2-0.3MPa left and right, and filter precision is 1 μ m.Barrier gas makes seal outer diameter place pressurized, gas enters the hydrodynamic spiral chute that both sides sealing stationary ring 3 end face external diameter places are offered, the liquid producing under rotation status is moving, hydrostatic effects, both ends of the surface are separated and in non-contact running state by a stable thin air film, the zero leakage and zero that has guaranteed processing medium is overflowed, under the effect of the design of hydrodynamic spiral flute type and centrifugal force, can effectively prevent that the solid particle in processing medium from entering sealing surface, control the nitrogen amount entering in still very little simultaneously, by the trace nitrogen gas entered environment of atmospheric side seal leakage.
Claims (6)
1. air film double mechanical seal method and a device for still, be by bolt, kettle O shape circle, stationary ring, stationary ring pressing plate, rotating ring snap ring, rotating ring, spring, rotating seat, housing, axle sleeve, stationary ring O shape circle, stationary seat, oil sealing, bearing housing, bearing, bearing gland, collection load, screw, transmission pin, transmission ring, transmission ring screw and lifting bolt composition, it is characterized in that: bolt is arranged on housing, kettle O shape circle is arranged on stationary seat, stationary ring adopts two O rings to support and rely on stationary ring pressing plate location, stationary ring and rotating ring counterface are offered fluid dynamic pressure groove grooved, above rotating ring, connecting rotating ring snap ring, spring is connected with rotating ring with rotating seat, rotating seat is connected with axle sleeve, quiet annular ring is arranged on stationary ring, and oil sealing is connected with stationary seat, and bearing housing relies on lifting bolt to be arranged on housing, bearing is connected with axle sleeve, bearing gland is arranged on bearing housing, and collection load is connected with axle sleeve, on collection load, screw is installed, transmission pin and transmission ring are all arranged on axle sleeve, and transmission ring screw is installed on transmission ring.
2. a kind of still air film double mechanical seal method and device as claimed in claim 1, is characterized in that: the integral seal structure of device adopts rotary Double End structure back-to-back, contactless running.
3. a kind of still air film double mechanical seal method and device as claimed in claim 1, is characterized in that: stationary seal ring end face is offered fluid dynamic pressure groove, and fluid dynamic pressure groove molded line can be the curve of helix, circular arc line, straight line and any other form.
4. air film double mechanical seal method and device for a kind of still as claimed in claim 1, is characterized in that: spring not with medium contact, avoid the impact of solid particle and impurity in medium.
5. a kind of still air film double mechanical seal method and device as claimed in claim 1, is characterized in that: stationary ring adopts two O rings support and rely on stationary ring pressing plate location, can bear back-pressure.
6. a kind of still air film double mechanical seal method and device as claimed in claim 1, is characterized in that: the sealing of device is installed and adopted unit loading type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310276767.2A CN103821942A (en) | 2013-07-03 | 2013-07-03 | Double mechanical sealing method and double mechanical sealing device for kettle gas films |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310276767.2A CN103821942A (en) | 2013-07-03 | 2013-07-03 | Double mechanical sealing method and double mechanical sealing device for kettle gas films |
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| CN103821942A true CN103821942A (en) | 2014-05-28 |
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| CN201310276767.2A Pending CN103821942A (en) | 2013-07-03 | 2013-07-03 | Double mechanical sealing method and double mechanical sealing device for kettle gas films |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286842A (en) * | 2015-05-28 | 2017-01-04 | 东营海森密封技术有限责任公司 | A kind of horizontal reactor axle end sealing device |
| 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 |
| CN107076307A (en) * | 2014-11-04 | 2017-08-18 | 伊格尔工业股份有限公司 | Mechanically-sealing apparatus |
| CN107076308A (en) * | 2014-11-04 | 2017-08-18 | 伊格尔工业股份有限公司 | Mechanically-sealing apparatus |
| CN108386545A (en) * | 2018-04-17 | 2018-08-10 | 江苏浩特隆搅拌设备有限公司 | Band rack double end-face mechanical sealing device |
| CN112762173A (en) * | 2021-01-18 | 2021-05-07 | 李双喜 | Mechanical seal assembly structure capable of avoiding oil seal leakage |
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| CN203023496U (en) * | 2012-12-18 | 2013-06-26 | 浙江兰天机械密封件有限公司 | Shift fork surface transmission double-end-face mechanical seal device for kettle |
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| WO1990008911A1 (en) * | 1989-01-26 | 1990-08-09 | Flexibox Limited | Shaft seal arrangement |
| CN201306445Y (en) * | 2008-10-16 | 2009-09-09 | 东营海森密封技术有限责任公司 | Liquid film lubrication double end surface non-contact mechanical seal device |
| CN201297388Y (en) * | 2008-11-14 | 2009-08-26 | 昆山市釜用机械密封件厂 | Improved structure for connecting spring seat and shaft housing of mechanical sealing device for kettle |
| CN101839345A (en) * | 2009-03-16 | 2010-09-22 | 昆山市釜用机械密封件厂 | Improved moving ring structure of mechanical sealing device for contact type air lubrication kettle |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107076307A (en) * | 2014-11-04 | 2017-08-18 | 伊格尔工业股份有限公司 | Mechanically-sealing apparatus |
| CN107076308A (en) * | 2014-11-04 | 2017-08-18 | 伊格尔工业股份有限公司 | Mechanically-sealing apparatus |
| US10145475B2 (en) | 2014-11-04 | 2018-12-04 | Eagle Industry Co., Ltd. | Mechanical seal device |
| US10352454B2 (en) | 2014-11-04 | 2019-07-16 | Eagle Industry Co., Ltd. | Mechanical seal device |
| CN106286842A (en) * | 2015-05-28 | 2017-01-04 | 东营海森密封技术有限责任公司 | A kind of horizontal reactor axle end sealing device |
| 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 |
| CN108386545A (en) * | 2018-04-17 | 2018-08-10 | 江苏浩特隆搅拌设备有限公司 | Band rack double end-face mechanical sealing device |
| CN108386545B (en) * | 2018-04-17 | 2024-02-09 | 江苏浩特隆搅拌设备有限公司 | Double-end-face mechanical sealing device with rack |
| CN112762173A (en) * | 2021-01-18 | 2021-05-07 | 李双喜 | Mechanical seal assembly structure capable of avoiding oil seal leakage |
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Application publication date: 20140528 |
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