CN201891657U - Centrifugal blower - Google Patents
Centrifugal blower Download PDFInfo
- Publication number
- CN201891657U CN201891657U CN2010201421043U CN201020142104U CN201891657U CN 201891657 U CN201891657 U CN 201891657U CN 2010201421043 U CN2010201421043 U CN 2010201421043U CN 201020142104 U CN201020142104 U CN 201020142104U CN 201891657 U CN201891657 U CN 201891657U
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- CN
- China
- Prior art keywords
- bearing
- centrifugal blower
- impeller
- main shaft
- casing
- 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
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Abstract
The utility model provides a centrifugal blower which adopts a rotor with a three-dimensional impeller and a two-dimensional impeller, the impellers are made of stainless steel, and a balancing disc is additionally arranged on a main shaft; a supporting bearing connected with the rotor is a five-pad bearing, a thrust bearing is a self-aligning pad type thrust bearing, the bearings are arranged in a bearing box; the sealing mode adopts oil seal and air seal, a machine shell is in a horizontal split structure and is made of a composite steel plate. The centrifugal blower has the advantages of high wind pressure ratio, low surge and good sealing property.
Description
Technical field
The utility model relates to centrifugal blower, especially refers to have higher-pressure ratio, hangs down the centrifugal blower of surge.
Background technique
Centrifugal blower has use in numerous places 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 as common binary fan impeller, for another the single-stage 3 d impeller that patent 98245322.1 provides, its machine air blast efficient of making 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 and 200920063021.2 blower fans of being made up of multistage 3 d impeller that provide are provided, its inter-stage transmission efficiency is on the low side, the blower fan bulk deformation of making is big, is prone to surge, and sealing is difficult to guarantee.
The model utility content
Model utility purpose: provide a kind of higher-pressure ratio that has, the centrifugal blower of low surge.
Technological scheme: the utility model adopts following scheme to realize the purpose of this utility model:
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 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.Main shaft is provided with the keyway that coupling cooperates with main shaft.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.
In the utility model, 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 Babbitt or Babbitt and forged steel.Can be provided with temperature indicator on the bearing housing, can also be provided with the circuit that is connected with alarm system, 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 the radial location mark.
Beneficial effect: centrifugal blower of the present utility model, wind pressure ratio is big, reaches 5: 1, is higher than 3.5: 1 of general blower fan, the degree of vacuum height, the distortion of casing and rotor part is little, vibrate little, low surge, high efficiency, good seal, corrosion-resistant, warning automatically, and easy to maintenance.
Description of drawings
Fig. 1 is a generalized section of rotor of the present utility model;
Fig. 2 is a generalized section of the present utility model.
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 12 as shown in Figure 1; 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 utility model 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 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; Main shaft (1) is provided with the keyway (11) that coupling cooperates with main shaft; 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; Perhaps bearing housing (15) is provided with temperature indicator.
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 Babbitt 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 the axially locating boss, or the radial location mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201421043U CN201891657U (en) | 2010-03-25 | 2010-03-25 | Centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201421043U CN201891657U (en) | 2010-03-25 | 2010-03-25 | Centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891657U true CN201891657U (en) | 2011-07-06 |
Family
ID=44221132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201421043U Expired - Fee Related CN201891657U (en) | 2010-03-25 | 2010-03-25 | Centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891657U (en) |
-
2010
- 2010-03-25 CN CN2010201421043U patent/CN201891657U/en not_active Expired - Fee Related
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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: 20110706 Termination date: 20150325 |
|
| EXPY | Termination of patent right or utility model |