CN2876392Y - Centrifugal air blower of sulfuric acid - Google Patents
Centrifugal air blower of sulfuric acid Download PDFInfo
- Publication number
- CN2876392Y CN2876392Y CN 200520098141 CN200520098141U CN2876392Y CN 2876392 Y CN2876392 Y CN 2876392Y CN 200520098141 CN200520098141 CN 200520098141 CN 200520098141 U CN200520098141 U CN 200520098141U CN 2876392 Y CN2876392 Y CN 2876392Y
- Authority
- CN
- China
- Prior art keywords
- gas
- pressure
- air return
- leaking
- labyrinth gland
- Prior art date
- 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
Links
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a blower that conveys the gas of SO2, a sulphuric acid centrifugal blower. A radial labyrinth gland and an axial labyrinth gland are equipped in its boss and housing and air return pipes are equipped on the boss. In this way, gas SO2 is prevented from leaking from the housing. After SO2 passes through the radial labyrinth gland, gas pressure is significantly reduced and most of the gas resulting in the reduction of pressure returns to the impeller through the air return pore in the impeller boss. The other part of gas resulting in the reduction of pressure is decompressed by the axial labyrinth gland, and is further decompressed after entering the expansion cavity. An air return pore is provided in the cavity and is connected with the air return pipe which is also connected with the fan inlet on the low-pressure side. The axial outgoing gas is rapidly drawn into the air inlet, which prevents the gas from going out from the main shaft direction. In addition, the butter on the outer end prevents zero pressure gas from leaking and further prevents SO2 from leaking from the main shaft to protect the environment from being contaminated.
Description
Technical field
The utility model relates to a kind of conveying SO
2The centrifugal blower of gas.
Background technique
In the relieving haperacidity industry, SO
2The centrifugal blower of gas is SO
2(sulfur dioxide) gas delivery is made sulfuric acid in acid tank.There is gas leakage in original blower at casing and main shaft cooperation place.SO
2Gas is discharged into the workshop after leaking from the blower casing, and the smell is awful, and the operator can't stand, has a strong impact on health, also destroys ecotope.
Summary of the invention
The purpose of this utility model is: provide a kind of favorable sealing property, leak free conveying SO
2The centrifugal blower of gas prevents SO
2The gaseous contamination air.
The technical solution of the utility model is: warp-wise labyrinth sealing and axial labyrinth seal device have been installed in wheel hub and casing, and are provided with muffler on wheel hub.
Owing to adopted technique scheme, stoped SO fully
2Gas comes out from the casing internal leakage.SO
2Gas is by the sealing of radial labyrinth formula, and gas pressure descends greatly, and the gas major part of falling pressure is got back in the impeller by the return-air hole on the impeller boss.Another part gas is reduced pressure by axial labyrinth seal again, arriving the expansion intracavity gas further reduces pressure, pore once in the chamber, hole and muffler link, muffler links with air inlet again, intake grill is a low voltage terminal, is extracted into intake grill from the gas of axially scurrying out is very fast by muffler, and gas is not scurried out from major axes orientation.The butter of outermost end further stops stress-free gas leakage.Finally make SO
2Gas can not leak out from main shaft, and the protection environment is not contaminated.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Among the figure: 1, casing; 2, impeller; 3, wheel hub; 4, wheel hub return-air hole; 5, radial labyrinth formula sealing; 6, axial labyrinth seal; 7, expansion chamber; 8, return-air hole; 9, muffler; 10, grease cup; 11, intake grill; 12, main shaft; 13, bearing housing.
Embodiment
In the drawings, impeller (2) high speed rotating in the casing (1) produces air quantity and blast, pressurized gas leak towards casing (1) by impeller hub (3) and radial labyrinth formula sealing (5), by constantly decompression of radial labyrinth formula sealing (5), get back in the impeller (2) by return-air hole to the gas that wheel hub return-air hole (4) is a large amount of, another fraction gas arrives expansion chamber (7) by axial labyrinth seal (6) and reduces pressure once more, return-air hole (8) communicates up to intake grill (11) with muffler (9), gas by the low pressure of intake grill from return-air hole (8), muffler (9) is drawn into intake grill (11), and grease cup (10) is annotated lubricating grease and further stoped stress-free gas leak.SO like this
2Gas can not axially release from main shaft (12).
Claims (2)
1, sulfuric acid centrifugal blower is by casing (1), impeller (2), and wheel hub (3), main shaft (12), bearing housing (13) is formed, and it is characterized in that having installed in wheel hub (3) and casing (1) sealing of radial labyrinth formula (5) and axial labyrinth seal (6).
2, sulfuric acid centrifugal blower according to claim 1 is characterized in that being provided with return-air hole (4) on wheel hub (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520098141 CN2876392Y (en) | 2005-09-22 | 2005-09-22 | Centrifugal air blower of sulfuric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520098141 CN2876392Y (en) | 2005-09-22 | 2005-09-22 | Centrifugal air blower of sulfuric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2876392Y true CN2876392Y (en) | 2007-03-07 |
Family
ID=37819629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520098141 Expired - Fee Related CN2876392Y (en) | 2005-09-22 | 2005-09-22 | Centrifugal air blower of sulfuric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2876392Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478007A (en) * | 2010-11-30 | 2012-05-30 | 贵州省鼓风机厂 | Corrosion-resistant gas fan and manufacturing method thereof |
| CN103362855A (en) * | 2012-04-05 | 2013-10-23 | 南通大通宝富风机有限公司 | Shaft seal of nuclear grade centrifugal fan |
| CN112855604A (en) * | 2021-01-12 | 2021-05-28 | 桂林理工大学 | Sealing system for sulfur dioxide fan |
-
2005
- 2005-09-22 CN CN 200520098141 patent/CN2876392Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478007A (en) * | 2010-11-30 | 2012-05-30 | 贵州省鼓风机厂 | Corrosion-resistant gas fan and manufacturing method thereof |
| CN103362855A (en) * | 2012-04-05 | 2013-10-23 | 南通大通宝富风机有限公司 | Shaft seal of nuclear grade centrifugal fan |
| CN112855604A (en) * | 2021-01-12 | 2021-05-28 | 桂林理工大学 | Sealing system for sulfur dioxide fan |
| CN112855604B (en) * | 2021-01-12 | 2022-10-21 | 桂林理工大学 | Sealing system for sulfur dioxide fan |
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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: 20070307 Termination date: 20140922 |
|
| EXPY | Termination of patent right or utility model |