CN2503238Y - Straight-vane fan rotor - Google Patents
Straight-vane fan rotor Download PDFInfo
- Publication number
- CN2503238Y CN2503238Y CN 01256449 CN01256449U CN2503238Y CN 2503238 Y CN2503238 Y CN 2503238Y CN 01256449 CN01256449 CN 01256449 CN 01256449 U CN01256449 U CN 01256449U CN 2503238 Y CN2503238 Y CN 2503238Y
- Authority
- CN
- China
- Prior art keywords
- straight
- outlet section
- fan rotor
- inducer
- vane
- 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 discloses a fan rotor, in particular a fan rotor with a straight vane. The smoke exhaust fan D1500-11 of the prior art has the disadvantages of insufficient wind volume and short service life of the fan impeller due to the arc vane structure, thus a fan rotor with a straight vane that has a simple structure, improved flowing, increased flux and promoted efficiency and has a straight vane as well as an angle at an outlet is disclosed. The technical proposal is that: an arc outlet section on the inlet section is a long straight vane 3; the inlet section end is arranged at the joint between an air inlet 1 and a front cover, while the other end outlet section is arranged around a back wheel cover 5; an arc outlet section of the inle4t section is a short long vane 4; the inlet section end is arranged at two thirds of the back wheel cover semidiameter, while the other end outlet section is arranged around the back wheel cover 5. The utility model is fit for the smoke exhaust fan of the type D1500-11.
Description
One. technical field
The utility model relates to a kind of fan rotor, especially straight-vaned fan rotor.
Two. background technique
The steel-making smoke exhaust fan is one of key equipment of guaranteeing the normal operation of converter smelting.Its effect is that the waste gas that converter produces in smelting process is discharged atmosphere in time, continuously, and the assurance smelting process is continuously carried out.Otherwise,, will make converter steelmaking process be difficult to normally carry out continuously if smoke exhaust fan is undesired or do not match.The critical component that influences fan performance is an impeller.At existing smoke exhaust fan D1500-11,, in the STEELMAKING PRODUCTION process, exposed following problem owing to adopt camber line shape blade structure:
1. deficiency in draught: cause a large amount of flue gases in stokehold to emit outward, severe contamination around environment.Also limit simultaneously the increase of STEELMAKING PRODUCTION amount.
2. the life-span of draught fan impeller is short: (maximum 1-1.5 of the life-span of every impeller) have not only influenced the production continuously of steel-making, have also improved maintenance and product cost simultaneously.
Three. summary of the invention
The purpose of this utility model provides a kind of simple in structure, improves to flow, and increases flow, raises the efficiency, and having changed blade profile is the straight-vaned fan rotor of one section straight line and inlet/outlet established angle
The technological scheme that the purpose of this utility model adopted is, have that device has linear leaf and short blade between the protecgulum of intake grill and the rear trochal disc, the curved outlet section linear leaf inducer end points linearly of its inducer at intake grill and protecgulum interface point place, the other end point outlet section is in the rear wheel hub cover circle edge, the curved outlet section short blade inducer end points linearly of inducer rear trochal disc half through 2/3rds places, the other end point outlet section is in the rear trochal disc circle edge.
The straight line of linear leaf of the present utility model and short blade outlet section prolongs and rear wheel hub cover radial cut wire clamp angle α is 58 °-64 °.
The curved line tangent line of linear leaf inducer end points of the present utility model and intake grill and protecgulum interface point intake grill radial cut wire clamp angle β are 38 °-44 °.
The curved line tangent line of short blade inducer end points of the present utility model and the radial cut wire clamp angle β of rear wheel hub cover radius 2/3rds place are 38 °-44 °
Long and short blade of the present utility model adopts one section linear structure of one section curved line, has changed blade profile; Reasonably chosen inlet/outlet angle is installed, made and flow unimpededly, increased flow, raised the efficiency, simple and compact for structure, fabrication and installation are convenient, and the draught fan impeller life-span is long, reduces production costs.
Four. description of drawings
Further specify the utility model below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural representation;
Fig. 2 is that Figure 1A-A is to looking schematic representation.
Among the figure: 1-intake grill, 2-protecgulum, 3-linear leaf, 4-short blade, 5-rear wheel hub cover
Five. embodiment
As shown in Figure 1, have that device has linear leaf 3 and short blade 4 between the protecgulum 2 of intake grill 1 and the rear wheel hub cover 5.
Fig. 2, rear wheel hub cover 5 is equipped with linear leaf 3 and short blade 4, the elongation line of linear leaf 3 outlet sections and rear wheel hub cover 5 radial cut wire clamp angle α, the curved line tangent line of linear leaf 3 inducer end points and intake grill 1 and protecgulum 2 interface point intake grills 1 radial cut wire clamp angle β, the curved line tangent line of short blade 4 inducer end points and the radial cut angle β of three minutes two places of rear trochal disc radius.
The outlet section straight line of linear leaf 3 and short blade 4 is greater than 200mm.
Be applicable to smoke exhaust fan model D1500-11.
Claims (4)
1. straight-vaned fan rotor, have that device has linear leaf (3) and short blade (4) between the protecgulum (2) of intake grill (1) and the rear wheel hub cover (5), it is characterized in that the curved outlet section of inducer linear leaf (3) inducer end points linearly at intake grill (1) and protecgulum (2) interface point place, the other end point outlet section is in rear wheel hub cover (5) circle edge, curved outlet section short blade (4) the inducer end points linearly of inducer at rear trochal disc (5) radius 2/3rds places, the other end point outlet section in rear trochal disc (5) circle edge.
2. a kind of straight-vaned fan rotor according to claim 1 is characterized in that the straight line prolongation of linear leaf (3) and short blade (4) outlet section is 53 °-64 ° with rear wheel hub cover (5) radial cut wire clamp angle α.
3. a kind of straight-vaned fan rotor according to claim 1 is characterized in that the curved line tangent line of linear leaf (3) inducer end points and interface point intake grill (1) the radial cut wire clamp angle β of intake grill (1) and protecgulum are 38 °-44 °.
4. a kind of straight-vaned fan rotor according to claim 1 is characterized in that the curved line tangent line of short blade (4) inducer end points and rear trochal disc (5) the radius radial cut wire clamp angle β of 2/3rds places are 38 °-44 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01256449 CN2503238Y (en) | 2001-10-31 | 2001-10-31 | Straight-vane fan rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01256449 CN2503238Y (en) | 2001-10-31 | 2001-10-31 | Straight-vane fan rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2503238Y true CN2503238Y (en) | 2002-07-31 |
Family
ID=33665412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01256449 Expired - Fee Related CN2503238Y (en) | 2001-10-31 | 2001-10-31 | Straight-vane fan rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2503238Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340776C (en) * | 2004-07-19 | 2007-10-03 | 吴伟 | Low noise high pressure centrifugal fan |
| CN106895026A (en) * | 2017-04-20 | 2017-06-27 | 河南工学院 | A kind of assembled closed type draught fan impeller |
-
2001
- 2001-10-31 CN CN 01256449 patent/CN2503238Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340776C (en) * | 2004-07-19 | 2007-10-03 | 吴伟 | Low noise high pressure centrifugal fan |
| CN106895026A (en) * | 2017-04-20 | 2017-06-27 | 河南工学院 | A kind of assembled closed type draught fan impeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |