CN101138761B - Taper cone type centrifugal fan - Google Patents
Taper cone type centrifugal fan Download PDFInfo
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- CN101138761B CN101138761B CN200610053276A CN200610053276A CN101138761B CN 101138761 B CN101138761 B CN 101138761B CN 200610053276 A CN200610053276 A CN 200610053276A CN 200610053276 A CN200610053276 A CN 200610053276A CN 101138761 B CN101138761 B CN 101138761B
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- fan
- impeller
- rotating shaft
- centrifugal fan
- taper cone
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Abstract
The present invention is a conic centrifugal fan used for grain cleaning on a complete-feeding rice and wheat combine harvester. By aiming at the defect of a prior centrifugal fan used for a complete-feeding rice and wheat combine harvester that the air pressure, the air speed and the air volume at a position with much grain to be cleaned are relatively deficient and the grain cannot be cleaned completely, as all fan outlets are provided with the same air pressure, the same air speed and the same air volume, the present invention provides conic centrifugal fan, which is provided with the simple structure, the reliable work, and impellers of different radiuses in the axial direction of the fan. The present invention comprises the impellers, a fan shell, a rotating shaft, spokes, secondary impellers, a secondary fan shell, and a vibrating sieve. The conic centrifugal fan adopts the way of double-side air inlet. The impellers consist of vane spokes and fan vanes. A plurality of vanes of different lengths are fixed on the rotating shaft via the spokes and bolts respectively. The fan shell and the secondary fan shell are connected together. The fan shell is fit with the impellers. The fan shell and the secondary shell are fixed on a machine frame.
Description
Technical field
The invention belongs to agricultural machinery technological field, particularly a kind ofly be used for the taper cone type centrifugal fan that full feeding rice wheat combine upper valley thing is cleaned.
Background technology
All adopt horizontal axial flow threshing separation facility on the full feeding rice wheat combine at present, this device is become with the grid-type concave screen banks by threshing cylinder, takes off and draws drum shaft vertical with the direction of machine travel.During machinery operation, after crop radially feeds from the axial-flow type drum right-hand member, move to left end on threshing limit, limit in the threshing cylinder of rotation at a high speed, cane after threshing is discharged at the left end straw outlet, and the seed that takes off, clever shell and short cane etc. are under action of centrifugal force, pass through the grid-type concave sieve that places below the axial-flow type drum, along on the vibratory sieve below of cylinder axis direction whereabouts, and under the centrifugal fan air-flow acting in conjunction that places the vibratory sieve front lower place, emersion object is cleaned, foreign material are blown outside the machine, and seed is delivered to the collection tanker through collection.Experiment shows that crop enters into left end from the axial-flow type drum right-hand member and discharges, and the quantity that drops on the emersion object on the vibrating screen surface is unequal along the axial-flow type drum axis direction, the upstream end right-hand member is maximum, the outlet side left end is minimum, be linear basically and descend, so cleaning load is uneven on the vibratory sieve.Centrifugal fan is the core work parts of cleaning plant, existing its blower fan axle of centrifugal fan that is used on the full feeding rice wheat combine is parallel with the axial-flow type drum axle, blower fan width and vibratory sieve are wide, air outlet is facing to whole compass screen surface, in the whole width range of blower fan, running parameters such as structural parameters such as its fan blade radius and rotating speed are identical, and therefore existing outlet blast, wind speed and the air quantity that is used for centrifugal fan on the full feeding rice wheat combine is all the same.But it is to being different in the face of cleaning thing, and it is less than normal therefore to clean the many position airflow pressure wind speed of thing, cleans endless, and cleans the few position of thing, too big again, not only increases cleaning loss, has also wasted wind energy, has increased energy consumption.
Summary of the invention
The present invention is directed to existingly be used on the full feeding rice wheat combine the existing above-mentioned blower fan outlet blast of centrifugal fan, wind speed is all the same with air quantity, cause that to clean the many position airflow pressure wind speed of thing less than normal, clean endless, and clean the few position of thing, the airflow pressure wind speed is too big again, not only increases cleaning loss, also wasted wind energy, increased the weak point of energy consumption, a kind of simple in structure, reliable operation is provided, along the different taper cone type centrifugal fan of blower fan direction of principal axis impeller radius.
The technical scheme that taper cone type centrifugal fan of the present invention adopts is finished in the following way: taper cone type centrifugal fan comprises impeller, Fan casing, rotating shaft, spoke, secondary impeller, secondary Fan casing, vibratory sieve, and impeller and secondary impeller are made up of spoke and fan blade; Wherein taper cone type centrifugal fan has major part and microcephaly, and blade diameter dwindles gradually from major part to the microcephaly, and the fan blade that some leaf length do not wait is separately fixed at the left and right sides of rotating shaft by spoke and bolt; Fan casing and secondary Fan casing are linked together, and Fan casing matches with impeller, and secondary Fan casing matches with secondary impeller, and Fan casing and secondary Fan casing are fixed on the frame; Taper cone type centrifugal fan adopts the two sided air intake, is respectively equipped with air inlet one, air inlet two, air inlet three on left side, centre, the right side of blower fan, is provided with air outlet on blower fan; Rotating shaft on frame, is equipped with sprocket wheel at rotating shaft one end by bearing fixing, and blower fan is driven by sprocket wheel by outer power.
The present invention compares with the existing centrifugal fan that is used on the full feeding rice wheat combine, has simple in structure, reliable operation, along blower fan direction of principal axis impeller radius different characteristics, in addition, use the present invention and need not change full feeding rice wheat combine blower fan installation site and blower fan shaft size, manufacturing cost increases few.
Description of drawings
Fig. 1 is the structural representation of taper cone type centrifugal fan.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the structural representation of vibratory sieve dressing mechanism
Fig. 4 is the vertical view of Fig. 3.
The specific embodiment
Contrast accompanying drawing below, the invention will be further described by embodiment.
With reference to accompanying drawing 1 and accompanying drawing 4, a kind ofly be used for the taper cone type centrifugal fan that full feeding rice wheat combine upper valley thing is cleaned, this blower fan adopts twin-stage impeller parallel-connection structure, it comprises impeller 3, Fan casing 5, rotating shaft 6, spoke 8, secondary impeller 9, secondary Fan casing 11, vibratory sieve 16, wherein taper cone type centrifugal fan adopts the two sided air intake, impeller 3 is made up of spoke 8 and fan blade 1, secondary impeller 9 is made up of spoke 8 and fan blade 2 10, and the fan blade 2 10 that fan blade 1 and the some leaf length that some leaf length do not wait or not is separately fixed at the left and right sides of rotating shaft 6 by spoke 8 and bolt 14; Fan casing 5 is linked together with secondary Fan casing 11, and Fan casing 5 matches with impeller 3, and secondary Fan casing 11 matches with secondary impeller 9, and Fan casing 5 is fixed on the frame with secondary Fan casing 11; Be respectively equipped with air inlet 1, air inlet 27, air inlet 3 12 on left side, centre, the right side of blower fan, on blower fan, be provided with air outlet 15; Rotating shaft 6 is fixed on the frame by bearing 1, at an end of rotating shaft 6 sprocket wheel 13 is housed, and blower fan is driven by sprocket wheel 13 by outer power.
When machinery operation, outer power drives by sprocket wheel 13, fan blade 1 and fan blade 2 10 high speed rotating, and wind blows on the vibratory sieve 16 from air outlet 15, and under the synergy of wind-force and vibratory sieve 16, emersion object 17 is cleaned.Blower fan major part air pressure air flow wind speed is big, adapts to the many emersion objects 17 of accumulation and advances separating cleaning.Because air-flow V blow-off direction is vertical with fan blade 2 10 with fan blade 1, so can be decomposed into V
1And V
2, V
1Clever shell in the emersion object 17 and impurity vertically can be blown out outside the machine V
2It is uniform to help mixture to carry out plane of structure, cleans quality thereby improve; The pyramid type blower fan is from the major part to microcephaly, and its airflow pressure wind speed dwindles and progressively reduces with blade diameter, therefore makes air-flow V
2Uniform effect become possibility, the other end of blower fan is the circular cone microcephaly, its correspondence be the few end of emersion object 17, less air pressure air flow and wind speed can satisfy cleans requirement, has also saved energy consumption.Therefore compare with traditional column type blower fan, the pyramid type blower fan has uniform vibrating screen surface load and improves the characteristics of cleaning quality and rationally utilizing the wind-force energy efficient.
Claims (3)
1. taper cone type centrifugal fan, it is characterized in that this blower fan adopts twin-stage impeller parallel-connection structure, it comprises impeller (3), Fan casing (5), rotating shaft (6), spoke (8), vibratory sieve (16), impeller (3) is made up of spoke (8) and fan blade one (4), wherein taper cone type centrifugal fan has major part and microcephaly, blade diameter dwindles gradually from major part to the microcephaly, the fan blade one (4) that some leaf length do not wait is fixed in the rotating shaft (6) by spoke (8) and bolt (14), Fan casing (5) matches with impeller (3), Fan casing (5) is fixed on the frame, taper cone type centrifugal fan adopts the two sided air intake, on blower fan, be respectively equipped with air inlet one (2) and air inlet two (7), be provided with air outlet (15) on blower fan, rotating shaft (6) is fixed on the frame by bearing (1).
2. taper cone type centrifugal fan according to claim 1 is characterized in that at an end of rotating shaft (6) sprocket wheel (13) being housed, and blower fan is driven by sprocket wheel (13) by outer power.
3. taper cone type centrifugal fan according to claim 1 and 2, it is characterized in that on this blower fan, also comprising secondary impeller (9) and secondary Fan casing (11), secondary impeller (9) is made up of spoke (8) and fan blade two (10), the fan blade two (10) that fan blade one (4) and the some leaf length that some leaf length do not wait or not is separately fixed at the left and right sides of rotating shaft (6) by spoke (8) and bolt (14), Fan casing (5) is linked together with secondary Fan casing (11), (9 match secondary Fan casing (11) with secondary impeller, secondary Fan casing (11) is fixed on the frame, in the left side of blower fan, middle, the right side is respectively equipped with air inlet one (2), air inlet two (7), air inlet three (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610053276A CN101138761B (en) | 2006-09-05 | 2006-09-05 | Taper cone type centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610053276A CN101138761B (en) | 2006-09-05 | 2006-09-05 | Taper cone type centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101138761A CN101138761A (en) | 2008-03-12 |
| CN101138761B true CN101138761B (en) | 2010-05-26 |
Family
ID=39190961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610053276A Expired - Fee Related CN101138761B (en) | 2006-09-05 | 2006-09-05 | Taper cone type centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101138761B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108781778B (en) * | 2018-05-23 | 2020-11-20 | 金华职业技术学院 | Cleaning method of double-cone centrifugal cleaning fan |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4230130A (en) * | 1979-02-05 | 1980-10-28 | International Harvester Company | Combine grain loss sensing |
| CN2146589Y (en) * | 1992-06-17 | 1993-11-17 | 中国建筑西北设计院 | Diffusion fan |
| CN2797709Y (en) * | 2005-06-21 | 2006-07-19 | 张志杰 | Three contra rotation impeller axial-flow local-ventilation fan |
| CN201042701Y (en) * | 2006-09-06 | 2008-04-02 | 金华职业技术学院 | Agricultural taper type centrifugal fan |
-
2006
- 2006-09-05 CN CN200610053276A patent/CN101138761B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4230130A (en) * | 1979-02-05 | 1980-10-28 | International Harvester Company | Combine grain loss sensing |
| CN2146589Y (en) * | 1992-06-17 | 1993-11-17 | 中国建筑西北设计院 | Diffusion fan |
| CN2797709Y (en) * | 2005-06-21 | 2006-07-19 | 张志杰 | Three contra rotation impeller axial-flow local-ventilation fan |
| CN201042701Y (en) * | 2006-09-06 | 2008-04-02 | 金华职业技术学院 | Agricultural taper type centrifugal fan |
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| Publication number | Publication date |
|---|---|
| CN101138761A (en) | 2008-03-12 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20120905 |