CN202348772U - Two-stage centrifugal fan - Google Patents
Two-stage centrifugal fan Download PDFInfo
- Publication number
- CN202348772U CN202348772U CN 201120482413 CN201120482413U CN202348772U CN 202348772 U CN202348772 U CN 202348772U CN 201120482413 CN201120482413 CN 201120482413 CN 201120482413 U CN201120482413 U CN 201120482413U CN 202348772 U CN202348772 U CN 202348772U
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- casing
- level
- transmission
- spiral case
- main shaft
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- Expired - Lifetime
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Abstract
The utility model discloses a two-stage centrifugal fan which comprises a first-stage transmission enclosure, a main shaft (1) inserted in the first-stage transmission enclosure, and a first-stage transmission blower impeller (2) arranged on the main shaft (1), wherein the main shaft (1) is connected with a motor (4) through a fluid coupling (3). The two-stage centrifugal fan further comprises a second-stage transmission enclosure serially connected with the first-stage transmission enclosure and a second-stage transmission blower impeller (5) arranged on the main shaft (1) and located in the second-stage transmission enclosure. The two-stage centrifugal fan disclosed by the utility model has the advantages of compact structure design, convenience in installation and reliability in operation, the two-stage centrifugal fan guarantees small installation space occupation and saves the application space, and meanwhile, expands the gas pressure by two-stage boosting and meets the performance demand.
Description
Technical field
The utility model relates to a kind of centrifugal blower, particularly a kind of twin-stage centrifugal blower.
Background technique
In the design selection process of centrifuge, because a variety of causes adopts a centrifugal blower can not reach performance requirement, so in order to satisfy performance requirement; Often many centrifugal blowers are carried out parallel connection or series connection; But such structure makes that centrifugal blower integral body is bigger, during installation, has taken bigger mounting point; Many centrifugal blowers adopt the driven by motor operation respectively simultaneously, have also caused manufacture cost higher.
Existing centrifugal blower mainly comprises transmission casing and transmission draught fan impeller; The transmission casing mainly comprises single suction transmission casing and double suction transmission casing, and single suction transmission casing is made up of an inlet box and a spiral case, and double suction transmission casing is made up of two inlet boxs and a spiral case; The suction port of inlet box is provided with adjustment doors; The transmission draught fan impeller is positioned at spiral case, and such structure is connected in any case, all has blower fan gas pressure smaller defect.
The model utility content
The purpose of the utility model just provides a kind of twin-stage centrifugal blower of practicing thrift installing space, enlarging the blower fan gas pressure.
The purpose of the utility model is to realize through such technological scheme; A kind of twin-stage centrifugal blower; Comprise one-level transmission casing, penetrate the main shaft in the one-level transmission casing and be arranged on the one-level transmission draught fan impeller on the main shaft; Said main shaft is connected with motor through fluid coupling, said it also comprise the secondary transmission casing of connecting with one-level transmission casing, and be arranged on the main shaft and be positioned at the secondary transmission draught fan impeller of secondary transmission casing.
Further be provided with; Said one-level transmission casing comprises one-level casing inlet box and the one-level casing spiral case that is interconnected; Said secondary transmission casing comprises secondary casing inlet box and the secondary casing spiral case that is interconnected, and is provided with the secondary adjustment doors at the suction port place of secondary casing inlet box; The air outlet of said one-level casing spiral case is connected through the suction port of bend pipe with the secondary adjustment doors; Said one-level transmission draught fan impeller is with in secondary transmission draught fan impeller is separately positioned on the one-level casing spiral case and secondary casing spiral case that is connected side by side, and said one-level casing spiral case and secondary casing spiral case are isolated through side plate.
Owing to adopted technique scheme; The utlity model has structural design compactness, easy for installation, reliable advantage, adopt its not only to make and take up room lessly when installing, practiced thrift usage space; Simultaneously; Through two-stage supercharging, make the pressure of gas obtain expansion, satisfied performance requirement.
Description of drawings
The description of drawings of the utility model is following:
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is that the B of Fig. 1 is to view.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation; But the utility model is not limited to these mode of executions; Any on the present embodiment essence spirit improvement or substitute, still belong to the utility model claim scope required for protection.
Embodiment 1: like Fig. 1,2, shown in 3; A kind of twin-stage centrifugal blower; Comprise one-level transmission casing, penetrate the main shaft 1 in the one-level transmission casing and be arranged on the one-level transmission draught fan impeller 2 on the main shaft 1; Said main shaft 1 is connected with motor 4 through fluid coupling 3, said it also comprise the secondary transmission casing of connecting with one-level transmission casing, and be arranged on the main shaft 1 and be positioned at the secondary transmission draught fan impeller 5 of secondary transmission casing.
Wherein, Above-mentioned one-level transmission casing comprises the one-level casing inlet box 6 and one-level casing spiral case 7 that is interconnected; Said secondary transmission casing comprises the secondary casing inlet box 8 and secondary casing spiral case 9 that is interconnected, and is provided with secondary adjustment doors 10 at the suction port place of secondary casing inlet box 8; The air outlet of said one-level casing spiral case 7 is connected through the suction port of bend pipe 11 with secondary adjustment doors 10; Said one-level transmission draught fan impeller 2 and secondary transmission draught fan impeller 5 are separately positioned in the one-level casing spiral case 7 that is connected side by side and the secondary casing spiral case 9, and said one-level casing spiral case 7 is isolated through side plate 12 with secondary casing spiral case 9.
The utility model is work like this, and gas is got into by 13 imports of one-level adjustment doors earlier, successively through one-level adjustment doors 13, one-level casing inlet box 6, one-level casing spiral case 7 and one-level transmission draught fan impeller 2; After 2 works done of one-level transmission draught fan impeller, gas pressure raises, and the gas of the pressure that raises then arrives bend pipe 11 places; Get into secondary adjustment doors 10 by bend pipe 11 again; Successively through secondary casing inlet box 8, secondary casing spiral case 9 and secondary transmission draught fan impeller 5, through 5 works done of secondary transmission draught fan impeller, gas pressure further raises then; Arrive the pressure requirement, discharge through the outlet of secondary casing spiral case 9 at last.
Claims (2)
1. twin-stage centrifugal blower; Comprise one-level transmission casing, penetrate the main shaft (1) in the one-level transmission casing and be arranged on the one-level transmission draught fan impeller (2) on the main shaft (1); Said main shaft (1) is connected with motor (4) through fluid coupling (3); It is characterized in that: said it also comprise the secondary transmission casing of connecting with one-level transmission casing, and be arranged on the secondary transmission draught fan impeller (5) that secondary transmission casing was gone up and be positioned to main shaft (1).
2. twin-stage centrifugal blower as claimed in claim 1; It is characterized in that: said one-level transmission casing comprises one-level casing inlet box (6) and the one-level casing spiral case (7) that is interconnected; Said secondary transmission casing comprises secondary casing inlet box (8) and the secondary casing spiral case (9) that is interconnected, and is provided with secondary adjustment doors (10) at the suction port place of secondary casing inlet box (8); The air outlet of said one-level casing spiral case (7) is connected through the suction port of bend pipe (11) with secondary adjustment doors (10); Said one-level transmission draught fan impeller (2) and secondary transmission draught fan impeller (5) are separately positioned in the one-level casing spiral case (7) that is connected side by side and the secondary casing spiral case (9), and said one-level casing spiral case (7) is isolated through side plate (12) with secondary casing spiral case (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120482413 CN202348772U (en) | 2011-11-29 | 2011-11-29 | Two-stage centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120482413 CN202348772U (en) | 2011-11-29 | 2011-11-29 | Two-stage centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348772U true CN202348772U (en) | 2012-07-25 |
Family
ID=46537779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120482413 Expired - Lifetime CN202348772U (en) | 2011-11-29 | 2011-11-29 | Two-stage centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348772U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061172A (en) * | 2013-03-20 | 2014-09-24 | 上海宝钢工业技术服务有限公司 | Atomizing air blower |
| CN110173446A (en) * | 2019-06-25 | 2019-08-27 | 重庆通用工业(集团)有限责任公司 | A kind of two stage centrifugal ventilation blower that impeller inlet is positioned opposite |
-
2011
- 2011-11-29 CN CN 201120482413 patent/CN202348772U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061172A (en) * | 2013-03-20 | 2014-09-24 | 上海宝钢工业技术服务有限公司 | Atomizing air blower |
| CN110173446A (en) * | 2019-06-25 | 2019-08-27 | 重庆通用工业(集团)有限责任公司 | A kind of two stage centrifugal ventilation blower that impeller inlet is positioned opposite |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |