CN101922467B - Centrifugal blower - Google Patents
Centrifugal blower Download PDFInfo
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- CN101922467B CN101922467B CN 201010131373 CN201010131373A CN101922467B CN 101922467 B CN101922467 B CN 101922467B CN 201010131373 CN201010131373 CN 201010131373 CN 201010131373 A CN201010131373 A CN 201010131373A CN 101922467 B CN101922467 B CN 101922467B
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- bearing
- main shaft
- impeller
- centrifugal blower
- sealing
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Abstract
The invention provides a centrifugal blower. In the centrifugal blower, a rotor with a 3-D impeller and a 2-D impeller simultaneously is adopted, wherein the impellers are made of stainless steel; and a balance disc is arranged on a main shaft; a support bearing connected with the rotor is a five-pad bearing; a thrust bearing is an aligning pad type thrust bearing, and is arranged in a bearing box; the sealing type can be both oil sealing and gas sealing; and a frame is of a horizontal split structure, and is made of a composite steel plate. The blower has the advantages of large wind pressure ratio, low surging, good sealing performance and corrosion resistance.
Description
Technical field
The present invention relates to centrifugal blower, especially refer to have higher-pressure ratio, hang down the centrifugal blower of surge.
Background technique
Centrifugal blower is in numerous all uses such as factory, mine, power plant, and the primary clustering that constitutes blower fan has casing, rotor (impeller, main shaft, axle sleeve), bearing, Sealing, intake grill, exhaust outlet or the like.Usually the rotor of centrifugal blower is the single-stage assembly of single impeller, and like common binary fan impeller, for another the single-stage 3 d impeller that patent 98245322.1 provides, its machine air blast efficient of processing is low, and wind pressure ratio is little, and flow losses are big.And the more piece centrifugal blower that is provided in granted patent 01204894.1 with apply for a patent 200920063021.2 blower fans of forming by multistage 3 d impeller that provide; Its inter-stage transmission efficiency is on the low side; The blower fan bulk deformation of processing is big, is prone to surge, and sealing is difficult to guarantee.
Summary of the invention
Goal of the invention: a kind of higher-pressure ratio that has is provided, the centrifugal blower of low surge.
Technological scheme: the present invention adopts following scheme to realize the object of the invention:
The impeller that is adopted comprises binary impeller and 3 d impeller, and the blade of all impellers towards unanimity forward; Binary impeller, 3 d impeller, axle sleeve are installed on the main shaft, and Balance disc is installed on the main shaft in addition, and Balance disc is installed in the behind of all impellers; The material of main shaft adopts forged steel, and the material of impeller adopts stainless steel.With comprise spring bearing, thrust bearing in the bearing unit that main shaft is connected; Its spring bearing is five pieces watts a bearing, and spring bearing has two groups; Thrust bearing is an aligning tile fragment formula thrust-bearing, and thrust bearing has only one group, is installed in the main shaft top of air-out oral-lateral.Have on the main shaft keyway that coupling cooperates with main shaft is installed.The existing oil sealing of Sealing also has sealing gland.The casing of blower fan is a horizonally split formula structure, and casing is welded with the stiffening rib plate outward.
Among the present invention, spring bearing and thrust bearing all are placed in the bearing housing, and bearing housing and casing weldering are one.The material of bearing is that Babbitt is or/and forged steel.Can be provided with temperature indicator on the bearing housing, or the circuit that is connected with alarm system in addition, temperature has reports to the police when unusual automatically.Sealing gland is the comb-shaped sealing of filling N2.
Intake grill, exhaust outlet can be located at the below of casing, all can leave the interface that connects corrugated expansion joint.Its internal layer of Clad Steel Plate that casing adopts is that 316L stainless steel, skin are the 16Mn steel; The average thickness of Clad Steel Plate is 50-80mm.Upper casing can also be connected with balance gas connecting tube, to reduce the end thrust of rotor assembly.Also can be provided with the axially locating boss on the casing, or/and the radial location mark.
Beneficial effect: centrifugal blower of the present invention, wind pressure ratio is big, reaches 5: 1, is higher than 3.5: 1 of general blower fan, degree of vacuum is high, casing is little with the rotor part distortion, vibrate little, low surge, high efficiency, good seal, corrosion-resistant, automatic warning, and easy to maintenance.
Description of drawings
Fig. 1 is a generalized section of rotor of the present invention
Fig. 2 is a generalized section of the present invention.
Embodiment
Choose impeller 3 d impeller 3, binary impeller 5, main shaft 1, have the keyway 11 that coupling cooperates with main shaft on the main shaft 1, and make fan rotor as shown in Figure 1 12; Choose two groups of five pad bearings of bus alloy as spring bearing 16, choose one group of bus alloy aligning tile fragment formula thrust-bearing, make bearing housing 15 as thrust bearing 17; Choose Sealing 14 with oil sealing and sealing gland; Make upper casing 13, lower housing 19 with Clad Steel Plate; Produce air port 20, intake grill 22; Choose suitable Balance disc 6, axle sleeve 7, two cover corrugated expansion joints 21, several keys 8, on corresponding several rotor parts, make the mounting hole of key 8.
Make integral support (18) again; At last, each parts are installed successively, and are carried out the cooperation of each connected element, lubricated centrifugal blower of the present invention according to the component installation position shown in Figure 2 and the order of connection.
Claims (7)
1. centrifugal blower; Comprise casing, impeller, main shaft (1), bearing, axle sleeve (7), Sealing (14), intake grill (22), exhaust outlet (20); It is characterized in that: impeller comprises binary impeller (5) and 3 d impeller (3), and the blade of all impellers towards unanimity forward; Axle sleeve (7), binary impeller (5), 3 d impeller (3) are installed on the main shaft (1), and Balance disc (6) is installed on the main shaft in addition, and Balance disc (6) is installed in the behind of all impellers; The material of main shaft (1) adopts forged steel, and the material of impeller adopts stainless steel; The bearing that is connected with main shaft (1) includes spring bearing (16), thrust bearing (17); Thrust bearing (17) has only one group, is installed in main shaft (1) top of air intake oral-lateral; Have on the main shaft (1) keyway (11) that coupling cooperates with main shaft is installed; The casing of blower fan is a horizonally split formula structure, and casing is welded with stiffening rib outward.
2. centrifugal blower according to claim 1 is characterized in that: spring bearing (16) and thrust bearing (17) are placed in the bearing housing (15), and bearing housing (15) is one with the casing weldering; Temperature indicator is gone up or be provided with to bearing housing (15).
3. centrifugal blower according to claim 1 and 2 is characterized in that: spring bearing (16) is five pieces watts a bearing, and thrust bearing (17) is an aligning tile fragment formula thrust-bearing; The material of bearing is that Babbitt is or/and forged steel.
4. centrifugal blower according to claim 1 is characterized in that: the existing oil sealing of Sealing (14) also has sealing gland; Sealing gland is for filling N
2Comb-shaped sealing.
5. centrifugal blower according to claim 1 is characterized in that: intake grill (22), exhaust outlet (20) are located at the below of casing, all leave the interface that connects corrugated expansion joint (21).
6. centrifugal blower according to claim 1 is characterized in that: case material is a Clad Steel Plate, and the Clad Steel Plate internal layer is that 316L stainless steel, skin are the 16Mn steel, and the Clad Steel Plate average thickness is 50-80mm.
7. centrifugal blower according to claim 1 is characterized in that: casing is provided with axially locating boss or radial location mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010131373 CN101922467B (en) | 2010-03-24 | 2010-03-24 | Centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010131373 CN101922467B (en) | 2010-03-24 | 2010-03-24 | Centrifugal blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101922467A CN101922467A (en) | 2010-12-22 |
| CN101922467B true CN101922467B (en) | 2012-01-11 |
Family
ID=43337595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010131373 Active CN101922467B (en) | 2010-03-24 | 2010-03-24 | Centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101922467B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013053387A1 (en) * | 2011-10-12 | 2013-04-18 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Balancing weight for a fan wheel |
| CN103807187B (en) * | 2014-03-10 | 2016-08-17 | 南通大通宝富风机有限公司 | A kind of centrifugal high pressure fluidization fan of 135MW recirculating fluidized bed |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059943U (en) * | 1989-12-14 | 1990-08-01 | 沈阳鼓风机厂 | Three-component inlet blade centrifugal ventilator |
| EP1249615A2 (en) * | 2001-04-12 | 2002-10-16 | Robert Bosch Gmbh | Blower rotor |
| CN2606205Y (en) * | 2002-12-23 | 2004-03-10 | 余习猛 | Low-noise ventilator |
| CN201297261Y (en) * | 2008-11-26 | 2009-08-26 | 北海市风机厂 | Multistage centrifugal fan |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3557389B2 (en) * | 2000-10-03 | 2004-08-25 | 株式会社日立製作所 | Multistage centrifugal compressor |
-
2010
- 2010-03-24 CN CN 201010131373 patent/CN101922467B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059943U (en) * | 1989-12-14 | 1990-08-01 | 沈阳鼓风机厂 | Three-component inlet blade centrifugal ventilator |
| EP1249615A2 (en) * | 2001-04-12 | 2002-10-16 | Robert Bosch Gmbh | Blower rotor |
| CN2606205Y (en) * | 2002-12-23 | 2004-03-10 | 余习猛 | Low-noise ventilator |
| CN201297261Y (en) * | 2008-11-26 | 2009-08-26 | 北海市风机厂 | Multistage centrifugal fan |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-106487A 2002.04.10 |
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| Publication number | Publication date |
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| CN101922467A (en) | 2010-12-22 |
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