CN205117803U - Monopole coal gas centrifugal blower prevents leaking wheel hub - Google Patents
Monopole coal gas centrifugal blower prevents leaking wheel hub Download PDFInfo
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- CN205117803U CN205117803U CN201520927655.3U CN201520927655U CN205117803U CN 205117803 U CN205117803 U CN 205117803U CN 201520927655 U CN201520927655 U CN 201520927655U CN 205117803 U CN205117803 U CN 205117803U
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- impeller
- wheel hub
- main shaft
- casing
- coal gas
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Abstract
The utility model provides a monopole coal gas centrifugal blower prevents leaking wheel hub, includes casing, impeller and main shaft, the casing covers after including casing air intake and casing, and inside the impeller was located the casing, the impeller included impeller shroud, impeller blade, impeller hub disk and wheel hub, and impeller blade fixes on the impeller hub disk, and the main shaft is fixed on wheel hub, is provided with sealed piece behind the casing between lid, main shaft, the wheel hub three, its characterized in that: it has a cavity to seal between piece and the main shaft, sealed piece is provided with labyrinth seal, the last return -air hole that communicates with the cavity that still is provided with of wheel hub with wheel hub, main shaft junction. The utility model discloses simple structure, sealed respond well.
Description
Technical field
The utility model relates to a kind of one pole centrifugal blower, especially a kind of one pole coal gas centrifugal blower anti-leak wheel hub.
Background technique
Coal gas centrifugal blower is a kind of equipment coal gas being carried out pressurized delivered.Because coal gas has certain viscosity, Media density is lower, containing a small amount of coal tar wet goods impurity, and has inflammable and explosive characteristic, so the sealing of gas-blowing engine must be reliable.Produce air quantity and blast after the work of one pole coal gas centrifugal blower vane rotary, because blast is higher, can leak from spindle end, cause environmental pollution and operator's life is produced threatening.
Chinese Patent Application No. is: CN200720084187.3, Authorization Notice No. is CN201027693Y, the day for announcing is that the utility model patent of 2008.02.27 discloses a kind of one pole anti-leak coal gas centrifugal blower, single blade wheel structure is adopted in casing, impeller is arranged on main shaft, the other end of main shaft is connected with coupling through bearing housing, the front and back of impeller and casing touching position, is provided with seal arrangement after impeller inlet ring seal device and casing.After this design employs casing, seal arrangement to leak from main shaft coal gas and blockades, but does work to coal gas due to impeller, and the pressure of output coal gas is much larger than ambient air, and produce test greatly to the performance of rear seal arrangement, anti-leak result is not good.
Summary of the invention
The utility model is to overcome the problem that in prior art, one pole coal gas centrifugal blower anti-leak result is not good, provides the one pole coal gas centrifugal blower anti-leak wheel hub that a kind of structure is simple, sealing effect is good.
For realizing above object, the technological scheme that the utility model is taked is: a kind of one pole coal gas centrifugal blower anti-leak wheel hub, comprise casing, impeller and main shaft, described casing comprises shell air inlet and rear chassis, impeller is positioned at casing internal, impeller comprises impeller front disc, impeller blade, impeller hub disk and wheel hub, impeller blade is fixed on impeller hub disk, main shaft is fixed on wheel hub, rear chassis, main shaft, sealing block is provided with between wheel hub three, it is characterized in that: between described sealing block and main shaft, have a cavity, sealing block and wheel hub, main shaft joint is provided with labyrinth sealing, wheel hub is also provided with the return-air hole with cavity connects.
Compared with prior art, the beneficial effects of the utility model are:
The utility model is provided with labyrinth sealing at sealing block and wheel hub, main shaft joint, gas is utilized to produce resistance by labyrinth and make the aerodynamic principle that its flow reduces, serve the effect preventing gas leakage, and need impeller to rotate due to main shaft, and can not solid contact sealing be carried out between casing, therefore labyrinth-type excluder can be applicable to the axle head of blower and the sealing of each inter-stage.Even if there is a small amount of coal gas to enter in cavity by labyrinth sealing, owing to wheel hub being also provided with the return-air hole with cavity connects, negative pressure is formed in cavity, coal gas is drawn out of from return-air hole, coal gas amount in cavity is reduced, reduce cavity internal pressure, the production accident effectively avoiding coal gas to enter main shaft causing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, return-air hole 1, shell air inlet 2, impeller 3, impeller front disc 4, impeller blade 5, impeller hub disk 6, rear chassis 7, labyrinth sealing 8, cavity 9, main shaft 10, wheel hub 11, casing 12, sealing block 13.
Embodiment
Below in conjunction with schematic diagram 1, the utility model is described in further detail.
See Fig. 1, a kind of one pole coal gas centrifugal blower anti-leak wheel hub, comprise casing 12, impeller 3 and main shaft 10, described casing 12 comprises shell air inlet 2 and rear chassis 7, it is inner that impeller 3 is positioned at casing 12, impeller 3 comprises impeller front disc 4, impeller blade 5, impeller hub disk 6 and wheel hub 11, impeller blade 5 is fixed on impeller hub disk 6, main shaft 10 is fixed on wheel hub 11, rear chassis 7, main shaft 10, sealing block 13 is provided with between wheel hub 11 three, a cavity 9 is had between described sealing block 13 and main shaft 10, sealing block 13 and wheel hub 11, main shaft 10 joint is provided with labyrinth sealing 8, wheel hub 11 is also provided with the return-air hole 1 be communicated with cavity 9.
The utility model is provided with labyrinth sealing 8 in sealing block 13 and wheel hub 11, main shaft 10 joint, gas is utilized to produce resistance by labyrinth and make the aerodynamic principle that its flow reduces, serve the effect preventing gas leakage, and need impeller 3 to rotate due to main shaft 10, and can not solid contact sealing be carried out between casing 12, therefore labyrinth sealing 8 can be applicable to the axle head of blower and the sealing of each inter-stage.Even if there is a small amount of coal gas to enter into cavity 9(zone of high pressure by the labyrinth sealing 8 of end face between sealing block 13 and wheel hub 11) in, owing to wheel hub 11 being also provided with the return-air hole 1 be communicated with cavity 9, negative pressure is formed in cavity 9, coal gas is drawn out of from return-air hole 1 and enters into impeller 3 air intake (low pressure area), coal gas amount in cavity 9 is reduced, reduce cavity 9 internal pressure, main shaft 10 labyrinth sealing 8 axially can the remaining coal gas of effective sealing, the production accident avoiding coal gas to enter main shaft 10 causing.The utility model structure is simple, sealing effect is good.
Claims (1)
1. an one pole coal gas centrifugal blower anti-leak wheel hub, comprise casing (12), impeller (3) and main shaft (10), described casing (12) comprises shell air inlet (2) and rear chassis (7), it is inner that impeller (3) is positioned at casing (12), impeller (3) comprises impeller front disc (4), impeller blade (5), impeller hub disk (6) and wheel hub (11), impeller blade (5) is fixed on impeller hub disk (6), main shaft (10) is fixed on wheel hub (11), rear chassis (7), main shaft (10), sealing block (13) is provided with between wheel hub (11) three, it is characterized in that: between described sealing block (13) and main shaft (10), have a cavity (9), sealing block (13) and wheel hub (11), main shaft (10) joint is provided with labyrinth sealing (8), wheel hub (11) is also provided with the return-air hole (1) be communicated with cavity (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520927655.3U CN205117803U (en) | 2015-11-20 | 2015-11-20 | Monopole coal gas centrifugal blower prevents leaking wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520927655.3U CN205117803U (en) | 2015-11-20 | 2015-11-20 | Monopole coal gas centrifugal blower prevents leaking wheel hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205117803U true CN205117803U (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520927655.3U Active CN205117803U (en) | 2015-11-20 | 2015-11-20 | Monopole coal gas centrifugal blower prevents leaking wheel hub |
Country Status (1)
| Country | Link |
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| CN (1) | CN205117803U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130272895A1 (en) * | 2011-02-24 | 2013-10-17 | Akihiro Nakaniwa | Impeller, rotor comprising same, and impeller manufacturing method |
| CN106194829A (en) * | 2016-08-31 | 2016-12-07 | 山西巨龙风机有限公司 | A kind of sealing structure and machining method of blower wheel import department |
| US9664055B2 (en) | 2011-12-26 | 2017-05-30 | Mitsubishi Industries, Ltd. | Impeller and rotary machine provided with the same |
| CN107457710A (en) * | 2017-09-26 | 2017-12-12 | 江苏飞腾铸造机械有限公司 | Shot-blasting machine roller-way with leakage device outside anti-pill |
| US9903385B2 (en) | 2011-08-29 | 2018-02-27 | Mitsubishi Heavy Industries Compressor Corporation | Impeller, rotary machine including the same, and method for manufacturing impeller |
| CN109578314A (en) * | 2017-09-28 | 2019-04-05 | 镇江日泰生物工程设备有限公司 | Anti- dust leakage device |
-
2015
- 2015-11-20 CN CN201520927655.3U patent/CN205117803U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130272895A1 (en) * | 2011-02-24 | 2013-10-17 | Akihiro Nakaniwa | Impeller, rotor comprising same, and impeller manufacturing method |
| US9611742B2 (en) * | 2011-02-24 | 2017-04-04 | Mitsubishi Heavy Industries, Ltd. | Impeller, rotor comprising same, and impeller manufacturing method |
| US9903385B2 (en) | 2011-08-29 | 2018-02-27 | Mitsubishi Heavy Industries Compressor Corporation | Impeller, rotary machine including the same, and method for manufacturing impeller |
| US9664055B2 (en) | 2011-12-26 | 2017-05-30 | Mitsubishi Industries, Ltd. | Impeller and rotary machine provided with the same |
| CN106194829A (en) * | 2016-08-31 | 2016-12-07 | 山西巨龙风机有限公司 | A kind of sealing structure and machining method of blower wheel import department |
| CN107457710A (en) * | 2017-09-26 | 2017-12-12 | 江苏飞腾铸造机械有限公司 | Shot-blasting machine roller-way with leakage device outside anti-pill |
| CN107457710B (en) * | 2017-09-26 | 2024-02-13 | 江苏飞腾铸造机械有限公司 | Shot blasting machine roller way with device for preventing shot from leaking |
| CN109578314A (en) * | 2017-09-28 | 2019-04-05 | 镇江日泰生物工程设备有限公司 | Anti- dust leakage device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |