CN202690519U - Elastic contact carbon ring sealing assembly of fan spindle - Google Patents
Elastic contact carbon ring sealing assembly of fan spindle Download PDFInfo
- Publication number
- CN202690519U CN202690519U CN 201220363081 CN201220363081U CN202690519U CN 202690519 U CN202690519 U CN 202690519U CN 201220363081 CN201220363081 CN 201220363081 CN 201220363081 U CN201220363081 U CN 201220363081U CN 202690519 U CN202690519 U CN 202690519U
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- ring body
- annular
- carbocyclic ring
- carbon ring
- main shaft
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Abstract
An elastic contact carbon ring sealing assembly of a fan spindle belongs to a local sealing structure. The elastic contact carbon ring sealing assembly of the fan spindle comprises an upper retaining ring, a lower retaining ring, a floating annular carbon ring body, a tension spring and a round pin; the inner diameter of the floating annular carbon ring body contacts a spindle; a labyrinth seal groove is arranged at the contact surface; the outer diameter of the floating annular carbon ring body is matched with the tension spring by virtue of an inclined plane to achieve axial force and radial force, and the round pin is inserted between the floating annular carbon ring body and the upper retaining ring to prevent the floating annular carbon ring body from freely rotating. The contact low-leakage carbon ring sealing assembly can be suitable for different specifications of fans at different rotating speeds and has strong adaptability; a gap between the spindle and a casing is reduced to the minimum; leakage rate of the gas is prevented, and the elastic contact carbon ring sealing assembly is especially suitable for special gases with corrosivity.
Description
Technical field
The utility model relates to a kind of carbon ring seal assembly, specifically a kind of blower fan main shaft elastic contact type carbon ring seal assembly.
Background technique
Along with the development of ventilator technology, its anti-leak to blower fan main shaft and casing requires more and more higher.Otherwise Leakage Gas causes environmental pollution, and harm staff's safety causes blower fan normally not move.
Existing blower fan main shaft and casing sealing adopt asbestos packing as the blower fan leakage preventing device more.Original device has following shortcoming, and the one, sealing is poor, is subjected to the restriction of Installation and Debugging, and the 2nd, the off-centre of Sealing and axle is large, usually causes sealing part abrasion inhomogeneous, and behind the fan operation, temperature raises fast.If the target of blower fan is corrosive gas, the sealing effect of axial region Sealing strengthens the leakage rate of body gas with very fast variation, works the mischief.The alap leakage rate of customer requirements in this case, the maintenance work environment need to improve the sealing position.
The model utility content
The purpose of this utility model is to provide a kind of blower fan main shaft elastic contact type carbon ring seal assembly, the design of carbon ring seal is dissolved in the blower fan, and be a kind of simple in structure, the better seal construction of sealing effect.
The technical scheme in the invention for solving the technical problem is: a kind of blower fan main shaft elastic contact type carbon ring seal assembly, it is characterized in that, comprise retaining ring, lower retaining ring, annular carbocyclic ring body floats, stretched spring and round pin, described upper retaining ring and the lower retaining ring rear inner annular housing that forms that is connected, described unsteady annular carbocyclic ring body places annular housing, the internal diameter of described unsteady annular carbocyclic ring body contacts with main shaft, and be the labyrinth sealing groove at the surface of contact place, the outer radius of unsteady annular carbocyclic ring body cooperates a stretched spring to realize applying an axial force and radial force by the inclined-plane, can realize applying an axial force and radial force to the annular carbocyclic ring body that floats by this inclined-plane, axial force guarantees the good seal with casing, radial force guarantees the sealing with main shaft, an interspersed round pin between described unsteady annular carbocyclic ring body and upper retaining ring, the annular carbocyclic ring body that prevents from floating freely rotates.
Also can at main shaft annular sleeve be set as required, axle sleeve is in main shaft and floats between the annular carbocyclic ring body, floating has micro-gap between annular carbocyclic ring body and the annular sleeve, sleeve outer surface can scribble wearing layer, guarantees wear-resisting property, improves the adaptability of its working life and operating mode.
For ease of assembling with make, described unsteady annular carbocyclic ring body is the annulus that is combined by three sub-blocks, and each piece sub-block is 120 degree circular arcs, forms a circular arc, is split-type design.
The beneficial effects of the utility model are:
During the sometimes gas temperature of blower fan sudden change, but the carbocyclic ring thermal expansion coefficient is also very little, and the Volume Changes of carbocyclic ring is little, can not crack, and does not damage sealing.And carbocyclic ring intensity temperature improves and strengthens, and in the time of 200 ℃, carbocyclic ring intensity improves half.Carbocyclic ring has good chemical stability, can be acidproof, alkaline-resisting and the corrosion of organic solvent-resistant, and the corrosivity that can bear blower fan gas.
This contact-type anti-leak carbon ring seal assembly can adapt to the various blower fans of different rotating speeds different size, strong adaptability, drop to the gap of main shaft and casing minimum, prevented the leakage rate of gas, be particularly useful for having the use of corrosive special gas, thereby form structural type of the present utility model.
Description of drawings
Fig. 1 is the A--A sectional view of Fig. 2;
Fig. 2 is plan view of the present utility model;
Among the figure: retaining ring on 1,2 times retaining rings, 3 unsteady annular carbocyclic ring bodies, 4 stretched springs, 5 round pins, 6 main shafts.
Embodiment
As shown in Figure 1 and Figure 2:
A kind of blower fan main shaft elastic contact type carbon ring seal assembly comprises retaining ring 1, lower retaining ring 2, unsteady annular carbocyclic ring body 3, stretched spring 4 and round pin 5.Upper retaining ring and the lower retaining ring annular housing of rear formation that is connected, the annular carbocyclic ring body 3 that floats places cavity, is provided with the labyrinth sealing groove in the inboard of floating carbon ring seal casinghousing, and the outside is provided with the spring fitting groove of V-arrangement.The internal diameter of unsteady annular carbocyclic ring body 3 contacts with main shaft, and be the labyrinth sealing groove at the surface of contact place, the outer radius of unsteady annular carbocyclic ring body cooperates a stretched spring 4 to realize applying an axial force and radial force by the inclined-plane, axial force guarantees the sealing with casing, radial force guarantees the sealing with main shaft, an interspersed round pin 5 between unsteady annular carbocyclic ring body and upper retaining ring, the inner of round pin 5 leans on the annular carbocyclic ring body that floats, and the annular carbocyclic ring body that can prevent from floating freely rotates.Above-mentioned unsteady annular carbocyclic ring body is to be combined by three sub-blocks, and angle corresponding to each piece sub-block be 120 degree, convenient production and assembling.
Also can at axle annular sleeve be set as required, axle sleeve and the relative rotary motion between the annular carbocyclic ring body of floating, float gapped between annular carbocyclic ring body and the annular sleeve, sleeve outer surface can scribble wearing layer, guarantees wear-resisting property, improves the adaptability of its working life and operating mode.
Behind fan starting, the annular carbocyclic ring body 3 that floats is with retainer is under the stretched spring axial force up and down, and float annular carbocyclic ring body and seal chamber inner chamber fit tightly sealing.The annular carbocyclic ring body 3 that floats is realized sealing with main shaft 6 under outer shroud stretched spring 4 radial forces, because carbocyclic ring physique is soft, main shaft with the grinding of carbon ring seal ring after, the gap of float annular carbocyclic ring body and main shaft will be very little, under the effect of maze trough, prevent that gas leak from revealing.Externally the effect lower seal pad of pressing plate makes ring packing cavity and casing tight seal.
The sealing structure can be used for transmission main shaft and passes flow blower casing or inlet box place, and the sealing of installing floating carbon ring prevents that gas from leaking outside energy-saving and cost-reducing and protection of the environment.
Installation steps
1) the installation surface of retaining ring and lower retaining ring is in place in the joint in the inspection, adjusts in case of necessity.
2) hook stretched spring, insert the annular carbocyclic ring body that floats around main shaft, notice that spring can not stretch in transition when operation, do not damage the annular carbocyclic ring body that floats.Spring and the annular carbocyclic ring body that floats keep together, and make it be close to the inwall of floating carbon ring seal cavity inboard to the annular carbocyclic ring surface application of force of floating simultaneously.Therefore stretched spring after the annular carbocyclic ring body that floats inserts acts on the inwall that also acts on the contract seal casinghousing outside of sending out on its inclined-plane simultaneously, and axial force and radial force are arranged.
3) will float that to be installed in carbon ring seal body (retainer) upper and in place for annular carbocyclic ring body, loosely insert connecting bolt, guarantee that the stop round pin inserts in the groove of the annular carbocyclic ring body that floats, check that stretched spring is in the outer fix of annular carbocyclic ring body of floating, simultaneously, unsteady annular carbocyclic ring body is freely in the chamber.
4) up and down retainer by being installed on the main shaft shown in the subdivision layout plan and tightening all fastening pieces.
The carbocyclic ring stop pin should be positioned at the top of horizontal fan line when 5) being installed on the blower fan.
Demounting procedure is opposite with installation steps, forbids by force violence dismounting.
Except the described technical characteristics of specification, be the known technology of those skilled in the art.
Claims (3)
1. blower fan main shaft elastic contact type carbon ring seal assembly, it is characterized in that, comprise retaining ring, lower retaining ring, annular carbocyclic ring body floats, stretched spring and round pin, described upper retaining ring and the lower retaining ring annular housing of rear formation that is connected, described unsteady annular carbocyclic ring body places annular housing, the internal diameter of described unsteady annular carbocyclic ring body contacts with main shaft, and be the labyrinth sealing groove at the surface of contact place, the outer radius of unsteady annular carbocyclic ring body cooperates a stretched spring by the inclined-plane, can realize applying an axial force and radial force to the annular carbocyclic ring body that floats by this inclined-plane, axial force guarantees the sealing with casing, radial force guarantees the sealing with main shaft, an interspersed round pin between described unsteady annular carbocyclic ring body and upper retaining ring, the annular carbocyclic ring body that prevents from floating freely rotates.
2. a kind of blower fan main shaft elastic contact type carbon ring seal assembly according to claim 1 is characterized in that, between main shaft and unsteady annular carbocyclic ring body annular sleeve is set, and sleeve outer surface scribbles wearing layer.
3. a kind of blower fan main shaft elastic contact type carbon ring seal assembly according to claim 1 and 2 is characterized in that, described unsteady annular carbocyclic ring body is the annulus that is combined by three sub-blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363081 CN202690519U (en) | 2012-07-25 | 2012-07-25 | Elastic contact carbon ring sealing assembly of fan spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363081 CN202690519U (en) | 2012-07-25 | 2012-07-25 | Elastic contact carbon ring sealing assembly of fan spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690519U true CN202690519U (en) | 2013-01-23 |
Family
ID=47546145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220363081 Expired - Fee Related CN202690519U (en) | 2012-07-25 | 2012-07-25 | Elastic contact carbon ring sealing assembly of fan spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202690519U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727240A (en) * | 2014-01-23 | 2014-04-16 | 秦皇岛华宇通电力科技有限公司 | Sealed oil catch for main shaft of wind driven generator |
| CN104482215A (en) * | 2014-11-12 | 2015-04-01 | 崔正军 | Shaft-end multiple seal of centrifugal compressor |
| CN106704594A (en) * | 2015-08-04 | 2017-05-24 | 四川日机密封件股份有限公司 | Totally split type carbon ring sealing device |
| CN109139951A (en) * | 2018-11-07 | 2019-01-04 | 济南风机厂有限责任公司 | Anti-corrosion slide valve and boiler shut-off valve |
| CN110953346A (en) * | 2019-11-29 | 2020-04-03 | 上海好米密封科技有限公司 | Nearly complete concentric non-contact carbocycle seal structure |
-
2012
- 2012-07-25 CN CN 201220363081 patent/CN202690519U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727240A (en) * | 2014-01-23 | 2014-04-16 | 秦皇岛华宇通电力科技有限公司 | Sealed oil catch for main shaft of wind driven generator |
| CN104482215A (en) * | 2014-11-12 | 2015-04-01 | 崔正军 | Shaft-end multiple seal of centrifugal compressor |
| CN106704594A (en) * | 2015-08-04 | 2017-05-24 | 四川日机密封件股份有限公司 | Totally split type carbon ring sealing device |
| CN106704594B (en) * | 2015-08-04 | 2018-11-27 | 四川日机密封件股份有限公司 | Complete section fraction carbon ring seal device |
| CN109139951A (en) * | 2018-11-07 | 2019-01-04 | 济南风机厂有限责任公司 | Anti-corrosion slide valve and boiler shut-off valve |
| CN109139951B (en) * | 2018-11-07 | 2024-02-02 | 济南风机厂有限责任公司 | Corrosion-resistant gate valve and boiler shutoff valve |
| CN110953346A (en) * | 2019-11-29 | 2020-04-03 | 上海好米密封科技有限公司 | Nearly complete concentric non-contact carbocycle seal 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: 20130123 Termination date: 20140725 |
|
| EXPY | Termination of patent right or utility model |