CN202867282U - Double-stage high-speed centrifugal blower structure - Google Patents
Double-stage high-speed centrifugal blower structure Download PDFInfo
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- CN202867282U CN202867282U CN 201220486460 CN201220486460U CN202867282U CN 202867282 U CN202867282 U CN 202867282U CN 201220486460 CN201220486460 CN 201220486460 CN 201220486460 U CN201220486460 U CN 201220486460U CN 202867282 U CN202867282 U CN 202867282U
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- belt pulley
- impeller
- speed centrifugal
- twin
- centrifugal blower
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Abstract
The utility model discloses a double-stage high-speed centrifugal blower structure which comprises a support body, and a blower body and a drive motor which are arranged on the support body. The blower body comprises a housing and an impeller assembly which is arranged inside the housing, an output shaft end of the drive motor is provided with a first belt pulley, a main shaft end of the impeller assembly inside the blower body is provided with a second belt pulley, the diameter of the first belt pulley is greater than the diameter of the second belt pulley, and the first belt pulley is connected with the second belt pulley through a belt. The impeller assembly comprises a first-stage impeller and a second-stage impeller, the first-stage impeller and the second-stage impeller are arranged side by side along the direction of the main shaft, and a backflow device is arranged between the first-stage impeller and the second-stage impeller. The double-stage high-speed centrifugal blower structure has the advantages of being small in size, light in weight, compact in structure, stable in a long-time operation, attractive in appearance, convenient to move, high in efficiency and good in cost performance and the like. Loss of wind energy and noises are reduced and small flow and high pressure can be achieved.
Description
Technical field
The utility model relates to a kind of blower fan structure, relates in particular to a kind of twin-stage high-speed centrifugal blower structure.
Background technique
The draught fan matchings such as plateau melting, grain conveying, molding sand lifting, and the blower fan structure of special type of furnace iron air feed mainly comprise blower fan body, bearing housing, belt, belt pulley and drive motor.Drive motor drives this body running of blower fan by belt pulley and belt, thereby realizes that grain is carried, molding sand promotes and melting iron air feed.
In the above-mentioned existing blower fan structure, casing mostly is cast iron, and not only volume is large, heavy, and cost is high, inefficiency, and running noises is large, and blower fan structure is unreasonable again, and belt and bearing are short working life, and cost performance is low etc., must improve the structure of existing blower fan for this reason, to improve the technical performance of blower fan, meet consumers' demand.
The model utility content
The utility model provides a kind of twin-stage high-speed centrifugal blower structure for the drawback of prior art.
Twin-stage high-speed centrifugal blower structure described in the utility model, comprise stake body and be arranged at blower fan body and drive motor on this stake body, described blower fan body comprises casing and is arranged at the interior impeller sets of casing, the output shaft end of described drive motor arranges the first belt pulley, and the spindle nose of impeller sets arranges the second belt pulley in the described blower fan body; And the diameter of described the first belt pulley is greater than the diameter of the second belt pulley, and described the first belt pulley is connected by belt with the second belt pulley;
Described impeller sets comprises first order impeller and the second level impeller that is set up in parallel along this major axes orientation, and is provided with reflux between described first order impeller and the second level impeller.
In the twin-stage high-speed centrifugal blower structure described in the utility model, described the first belt pulley is the narrow V belt pulley with tapered sleeve, and described the second belt pulley is the narrow V belt pulley with tapered sleeve, and described belt is band tooth high-intensity, narrow-band V belt.
In the twin-stage high-speed centrifugal blower structure described in the utility model, described reflux comprises the annular rectification circle that is welded in casing inner wall, described annular rectification circle center is provided with conically shaped, and the outer wall of described conically shaped is evenly equipped with a plurality of guide vanes in the circumferential direction of the circle.
In the twin-stage high-speed centrifugal blower structure described in the utility model, described first order impeller comprises 19 in the circumferential direction of the circle uniform blades; Described second level impeller comprises 19 in the circumferential direction of the circle uniform blades; And the blade shape of the blade of described first order impeller and described second level impeller is identical and apart from one another by setting.
In the twin-stage high-speed centrifugal blower structure described in the utility model, described casing radially is provided with exhaust outlet, at the radially intake grill that extends axially out of this casing; Described air-flow is derived from exhaust outlet through behind the casing from radially intake grill importing.
In the twin-stage high-speed centrifugal blower structure described in the utility model, described radially intake grill place is provided with inlet box, and described inlet box is funnel shape.
In the twin-stage high-speed centrifugal blower structure described in the utility model, be provided with clutch shaft bearing case and the second bearing housing at described stake body, described clutch shaft bearing case and the second bearing housing are respectively in the both sides of casing; One end of described main shaft arranged the second belt pulley after wearing the second bearing housing; The other end of this main shaft seated in the clutch shaft bearing case after wearing successively second level impeller, reflux and first order impeller.
In the twin-stage high-speed centrifugal blower structure described in the utility model, be provided with single-groove grooved bearing in described clutch shaft bearing case and the second bearing housing.
In the twin-stage high-speed centrifugal blower structure described in the utility model, described casing is the scroll casing shape that Plate Welding forms.
In the twin-stage high-speed centrifugal blower structure described in the utility model, described band tooth high-intensity, narrow-band V belt quantity is 2 to 4.
In the twin-stage high-speed centrifugal blower structure described in the utility model, be provided with the protective housing that cover is buckled belt between described the first belt pulley and the second belt pulley.
In the twin-stage high-speed centrifugal blower structure described in the utility model, adopt welding type steel plate casing and abandon existing founding type cast iron casing volume is little, lightweight so that blower has, compact structure, long-term operation steadily, beautiful shape, mobile convenient, efficient is high, the cost performance high.And welding type steel plate casing smooth surface, so that the loss of wind energy reduces in the runner, reducing noise, simultaneously, the structure that adopts stage impeller to be set up in parallel, and between described first order impeller and second level impeller, be provided with reflux, reduce eddy current loss, thereby realize small flow, the high pressure of blower fan, significantly improved the technical performance of blower fan, satisfied user's request.
Description of drawings
Fig. 1 is the schematic diagram of twin-stage high-speed centrifugal blower structure described in the utility model;
Fig. 2 is another schematic diagram of twin-stage high-speed centrifugal blower structure described in the utility model;
Fig. 3 is the structural representation of impeller sets in the twin-stage high-speed centrifugal blower structure described in the utility model;
Fig. 4 is the structural representation of reflux in the twin-stage high-speed centrifugal blower structure described in the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, can implements according to this with reference to the specification literal to make those skilled in the art.
As shown in Figure 1 and Figure 2, twin-stage high-speed centrifugal blower structure described in the utility model comprises stake body 10, is arranged at blower fan body 1 and drive motor 7 on this stake body 10, and described blower fan body 1 comprises casing 16 and the impeller sets that is arranged in the casing 16.The scroll casing shape that described casing 16 can adopt Plate Welding to form, further, make the width of described casing less than the width of the blower casing that generally uses on the market at present, for example, the width of casing described in the utility model is 2/3 of commercially available blower casing width, can make the blower that makes have that volume is little, lightweight, the characteristics of compact structure, owing to using narrow casing, also realize blower output small flow.
As shown in Figure 3, described impeller sets comprises first order impeller 3 and the second level impeller 4 that is set up in parallel along main shaft 2 directions of this impeller sets, and is provided with reflux 17 between described first order impeller 3 and the second level impeller 4.
As shown in Figure 4, described reflux 17 specifically comprises the annular rectification circle 32 that is welded in casing 16 inwalls, and the center of described annular rectification circle 32 is provided with conically shaped 34, and the outer wall of described conically shaped 34 is evenly equipped with a plurality of guide vanes 33 in the circumferential direction of the circle.This reflux 17 can reduce eddy current loss, guarantees that air-flow passes through to second level impeller 4 from first order impeller 3, makes to greatest extent the kinetic energy of air convert pressure energy to, thereby realizes blower fan output high pressure, small flow.In the present embodiment, the blade of described first order impeller 3 can be 19, and uniform in the circumferential direction of the circle; The blade of described second level impeller 4 is all 19, and is also uniform in the circumferential direction of the circle; And the shape of described first order impeller 3 and described second level impeller 4 is identical and apart from one another by setting, to guarantee the smooth and easy of air-flow.
Described casing 16 radially be provided with exhaust outlet 14, at the radially intake grill 13 that extends axially out of this casing 16; Described air-flow is from radially intake grill 13 importings, through deriving from exhaust outlet 14 behind the casing 16.Further, 13 places are provided with inlet box 15 at described radially intake grill, and described inlet box 15 is funnel shape, are rendered as namely that opening is large and the little shape of passage guarantees that with this airflow smooth enters in the casing 16.
Output shaft end at described drive motor 7 arranges the first belt pulley, and main shaft 2 ends of described blower fan body 1 interior impeller sets arrange the second belt pulley 8; And the diameter of described the first belt pulley is greater than the diameter of the second belt pulley 8, and described the first belt pulley is connected by belt 11 with the second belt pulley 8.Like this structure can realize the purpose of draught fan impeller group speedup.Need to prove, because the first belt pulley is connected by belt 11 with the second belt pulley 8, therefore, needs to guarantee that the main shaft 2 of blower fan is parallel with the axis of the output shaft of drive motor 7, and make the first belt pulley and the second belt pulley 8 be on the same straight line.In the utility model, also be provided with the protective housing 12 that cover is buckled belt 11 between described the first belt pulley and the second belt pulley 8.
In the utility model, described the first belt pulley is the narrow V belt pulley with tapered sleeve, and described the second belt pulley 8 is the narrow V belt pulley with tapered sleeve, and described belt is band tooth high-intensity, narrow-band V belt.Described band tooth high-intensity, narrow-band V belt quantity can be 2 to 4, adopt this kind structure, because single power with the transmission of tooth high-intensity, narrow-band V belt is 2 to 3 times of ordinary straps, therefore, the band tooth high-intensity, narrow-band V belt tension that the utility model blower is joined has dwindled 1/3 to rear bearing moment, can obviously prolong the life-span of belt and bearing.
In the utility model, also be provided with clutch shaft bearing case 5 and the second bearing housing 6 on described stake body 10, described clutch shaft bearing case 5 and the second bearing housing 6 are respectively in the both sides of casing 16; One end of described main shaft 2 arranged the second belt pulley 8 after wearing the second bearing housing 6; The other end of this main shaft 2 seated in clutch shaft bearing case 5 after wearing successively second level impeller 4, reflux 17 and first order impeller 3.In described clutch shaft bearing case 5 and the second bearing housing 6, be provided with the high single-groove grooved bearing of limit speed.
In the twin-stage high-speed centrifugal blower structure described in the utility model, adopt the narrow casing of welding type steel plate and abandon founding type cast iron casing, this blower fan has that volume is little, lightweight, compact structure, long-term operation steadily, beautiful shape, mobile convenient, efficient is high, the cost performance high.And welding type steel plate casing smooth surface, so that the loss of wind energy reduces in the runner, reducing noise, simultaneously, the structure that adopts twin-stage narrow leaf wheel to be set up in parallel, and between described first order impeller and second level impeller, be provided with reflux, reduce eddy current loss, thereby realize small flow, the high pressure of blower fan, its performance parameters is that other existing blower fans are irreplaceable.
Although embodiment of the present utility model is open as above, but it is not restricted to listed utilization in specification and the mode of execution, it can be applied to the various fields of the present utility model that are fit to fully, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend of describing.
Claims (11)
1. twin-stage high-speed centrifugal blower structure, comprise stake body and be arranged at blower fan body and drive motor on this stake body, described blower fan body comprises casing and is arranged at the interior impeller sets of casing, it is characterized in that, the output shaft end of described drive motor arranges the first belt pulley, and the spindle nose of impeller sets arranges the second belt pulley in the described blower fan body; And the diameter of described the first belt pulley is greater than the diameter of the second belt pulley, and described the first belt pulley is connected by belt with the second belt pulley;
Described impeller sets comprises first order impeller and the second level impeller that is set up in parallel along this major axes orientation, and is provided with reflux between described first order impeller and the second level impeller.
2. twin-stage high-speed centrifugal blower structure as claimed in claim 1 is characterized in that, described the first belt pulley is the narrow V belt pulley with tapered sleeve, and described the second belt pulley is the narrow V belt pulley with tapered sleeve, and described belt is band tooth high-intensity, narrow-band V belt.
3. twin-stage high-speed centrifugal blower structure as claimed in claim 1, it is characterized in that, described reflux comprises the annular rectification circle that is welded in casing inner wall, and described annular rectification circle center is provided with conically shaped, and the outer wall of described conically shaped is evenly equipped with a plurality of guide vanes in the circumferential direction of the circle.
4. twin-stage high-speed centrifugal blower structure as claimed in claim 3 is characterized in that, described first order impeller comprises 19 in the circumferential direction of the circle uniform blades; Described second level impeller comprises 19 in the circumferential direction of the circle uniform blades; And the blade shape of the blade of described first order impeller and described second level impeller is identical and apart from one another by setting.
5. twin-stage high-speed centrifugal blower structure as claimed in claim 1 is characterized in that, described casing radially is provided with exhaust outlet, at the radially intake grill that extends axially out of this casing;
Described air-flow is derived from exhaust outlet through behind the casing from radially intake grill importing.
6. twin-stage high-speed centrifugal blower structure as claimed in claim 5 is characterized in that, described radially intake grill place is provided with inlet box, and described inlet box is funnel shape.
7. twin-stage high-speed centrifugal blower structure as claimed in claim 2 is characterized in that, is provided with clutch shaft bearing case and the second bearing housing at described stake body, and described clutch shaft bearing case and the second bearing housing are respectively in the both sides of casing;
One end of described main shaft arranged the second belt pulley after wearing the second bearing housing; The other end of this main shaft seated in the clutch shaft bearing case after wearing successively second level impeller, reflux and first order impeller.
8. twin-stage high-speed centrifugal blower structure as claimed in claim 7 is characterized in that, is provided with single-groove grooved bearing in described clutch shaft bearing case and the second bearing housing.
9. twin-stage high-speed centrifugal blower structure as claimed in claim 1 is characterized in that, described casing is the scroll casing shape that Plate Welding forms.
10. twin-stage high-speed centrifugal blower structure as claimed in claim 2 is characterized in that, described band tooth high-intensity, narrow-band V belt quantity is 2 to 4.
11. twin-stage high-speed centrifugal blower structure as claimed in claim 1 is characterized in that, is provided with the protective housing that cover is buckled belt between described the first belt pulley and the second belt pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486460 CN202867282U (en) | 2012-09-24 | 2012-09-24 | Double-stage high-speed centrifugal blower structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486460 CN202867282U (en) | 2012-09-24 | 2012-09-24 | Double-stage high-speed centrifugal blower structure |
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| Publication Number | Publication Date |
|---|---|
| CN202867282U true CN202867282U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220486460 Expired - Fee Related CN202867282U (en) | 2012-09-24 | 2012-09-24 | Double-stage high-speed centrifugal blower structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310002A (en) * | 2014-10-21 | 2015-01-28 | 河南工业大学 | Winnowing pan type grain throwing machine |
| CN104791273A (en) * | 2015-05-04 | 2015-07-22 | 马卓娅 | Regulable high-power ventilator |
| 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 |
-
2012
- 2012-09-24 CN CN 201220486460 patent/CN202867282U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310002A (en) * | 2014-10-21 | 2015-01-28 | 河南工业大学 | Winnowing pan type grain throwing machine |
| CN104791273A (en) * | 2015-05-04 | 2015-07-22 | 马卓娅 | Regulable high-power ventilator |
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20190924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |