CN202991624U - Combined serial blade grid local fan for mining - Google Patents
Combined serial blade grid local fan for mining Download PDFInfo
- Publication number
- CN202991624U CN202991624U CN2012207035084U CN201220703508U CN202991624U CN 202991624 U CN202991624 U CN 202991624U CN 2012207035084 U CN2012207035084 U CN 2012207035084U CN 201220703508 U CN201220703508 U CN 201220703508U CN 202991624 U CN202991624 U CN 202991624U
- Authority
- CN
- China
- Prior art keywords
- fan
- impeller
- stage
- level
- motor
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/024—Multi-stage pumps with contrarotating parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/007—Axial-flow pumps multistage fans
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A combined serial blade grid local fan for mining comprises a current collector (1), a front silencer (2), fan power, a two-stage major unit and a silencing diffusing cylinder (10). A two-stage impeller of a one-stage fan, a two-stage impeller of a two-stage fan and two groups of guide vanes are serially connected to form a four-stage serial fan. A serial blade grid combined serial structure is utilized to restrain air flow separation, lower pneumatic noise of the fan, and improve total pressure of the fan. The fan operates at a rotation speed of a four-stage motor, rotation noise of the fan is reduced effectively, detection shows that A sound level of the fan reduces by about 10dB, and air pressure and flow of an operating two-stage motor are achieved. A rotary shaft integrated structure is reserved, the fan passage is kept smooth, and fan operation efficiency is increased. A motor shell contacts with air flow in the passage and is cooled by air flow generated by the fan, temperature rise of the motor is reduced, service life of the motor is prolonged, and operation safety of the fan is guaranteed.
Description
Technical field
The utility model relates to a kind of booster, particularly a kind of mining combined type tandem cascade booster.
Background technique
At present, common and the most frequently used booster is namely to adopt the sencond stage impeller that revolves structure is realized ventilating, realize certain ventilation by sencond stage impeller, just must reach certain rotating speed could realize, and higher rotating speed can bring higher aerodynamic noise, and to fall low noise effect very limited by changing mean of calculating outside rotating speed.
Summary of the invention
The purpose of the utility model technology is to provide a kind ofly can effectively fall low noise mining combined type tandem cascade booster.
The utility model technology solves the technological scheme that its technical problem adopts: it comprises slip ring 1, premuffler 2, blower fan power, two-stage host groups and noise elimination diffusion barrel 10, it is characterized in that: impeller adopts tandem cascade; 2 groups of impellers of one-level blower fan and 2 groups of impeller serials of secondary blower fan form the level Four combined type fan impeller of connecting.One-level impeller 3, middle stator 4, sencond stage impeller 5, three grades of impellers 6, rear guide vane 9 and level Four impellers 8 are connected successively, stator is fixed in casing, one-level impeller 3 and sencond stage impeller 5 are driven by the one-level fan motor, three grades of impellers 6 and level Four impeller 8 are driven by the secondary fan motor, two motor speeds are identical, opposite direction forms to revolving structure sencond stage impeller 5 and three grades of impellers 6.Middle stator 4 is set between one-level impeller 3 and sencond stage impeller 5, between three grades of impellers 6 and level Four impeller 8, rear guide vane 9 is set.
The beneficial effects of the utility model are:
1. impeller adopts tandem cascade, effectively suppresses airflow breakaway, thereby improves blast, reduces the aerodynamic noise that airflow breakaway is brought.
2. to adopt 4 utmost point motor driving, rotating speed be 1/2 of 2 utmost point motors that adopt of general axial flow booster to blower fan, greatly reduces rotational noise.After testing, the ventilator A sound level in conjunction with the noise reduction of tandem cascade reduces approximately 10dB.
3. blower fan adopts 4 grades of impeller combination cascaded structures, improve total pressure of fan, in conjunction with the effect of tandem cascade, make blower fan when adopting slow-revving 4 utmost point motors operation, still can reach the performance index such as air quantity, blast of the general axial flow booster that adopts high-revolving 2 utmost point motors.
4. keep the axial flow rotary integral structure, keep the ventilator runner unobstructed, improve fan operation efficient; Motor housing directly contact with air-flow in runner, by ventilator produce distinguished and admirable cooling, reduce electric machine temperature rise, prolongation motor working life, assurance ventilator security of operation.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure: the 1-slip ring, the 2-premuffler, 3-one-level impeller, stator, 5-sencond stage impeller in 4-, three grades of impellers of 6-, 7-supports, 8-level Four impeller, 9-rear guide vane, 10-noise elimination diffusion barrel.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details.
The utility model comprises slip ring 1, premuffler 2, blower fan power, two-stage host groups and noise elimination diffusion barrel 10, and every grade of host groups comprises both stage impellers, coordinates with stator blade to be composed in series four impeller levels.Wherein impeller adopts tandem cascade.One-level impeller 3, middle stator 4, sencond stage impeller 5, three grades of impellers 6, rear guide vane 9 and level Four impellers 8 are connected successively, stator is fixed in casing, one-level impeller 3 and sencond stage impeller 5 are driven by the one-level fan motor, three grades of impellers 6 and level Four impeller 8 are driven by the secondary fan motor, two motor speeds are identical, opposite direction forms to revolving structure sencond stage impeller 5 and three grades of impellers 6.
Embodiment 1, and the utility model comprises slip ring 1, premuffler 2, blower fan power, two-stage host groups and noise elimination diffusion barrel 10, and every grade of host groups comprises both stage impellers, coordinates with stator blade to be composed in series four impeller levels.One-level impeller 3, middle stator 4, sencond stage impeller 5, three grades of impellers 6, rear guide vane 9 and level Four impellers 8 are connected successively, stator is fixed in casing, one-level impeller 3 and sencond stage impeller 5 are driven by the one-level fan motor, three grades of impellers 6 and level Four impeller 8 are driven by the secondary fan motor, two motor speeds are identical, opposite direction forms to revolving structure sencond stage impeller 5 and three grades of impellers 6.Impeller adopts tandem cascade, can effectively suppress airflow breakaway, reduces the aerodynamic noise that airflow breakaway causes, in conjunction with the fabricated structure of plural serial stage to revolving, can improve total pressure of fan.Blower fan adopts 4 utmost point motor driving, reduces rotational noise.After testing, the ventilator A sound level in conjunction with the noise reduction of tandem cascade reduces approximately 10dB.Reservation keeps the ventilator runner unobstructed to the axial flow rotary integral structure, improves fan operation efficient; Motor housing directly contact with air-flow in runner, by ventilator produce distinguished and admirable cooling, reduce electric machine temperature rise, prolongation motor working life, assurance ventilator security of operation.Consult Fig. 1.
Embodiment 2, and the utility model also can be provided with middle stator 4 between one-level impeller 3 and sencond stage impeller 5, be provided with rear guide vane 9 between three grades of impellers 6 and level Four impeller 8.Consult Fig. 1, all the other are with above-mentioned embodiment.
Claims (3)
1. mining combined type tandem cascade booster, it comprises slip ring (1), premuffler (2), blower fan power, two-stage host groups and noise elimination diffusion barrel (10), it is characterized in that: impeller adopts tandem cascade; 2 groups of impellers of one-level blower fan and 2 groups of impeller serials of secondary blower fan form the level Four combined type fan impeller of connecting.
2. mining combined type tandem cascade booster according to claim 1, it is characterized in that: one-level impeller (3), middle stator (4), sencond stage impeller (5), three grades of impellers (6), rear guide vane (9) and level Four impeller (8) are connected successively, stator is fixed in casing, one-level impeller (3) and sencond stage impeller (5) are driven by the one-level fan motor, three grades of impellers (6) and level Four impeller (8) are driven by the secondary fan motor, two motor speeds are identical, opposite direction forms to revolving structure sencond stage impeller (5) and three grades of impellers (6).
3. mining combined type tandem cascade booster according to claim 1, is characterized in that: between one-level impeller (3) and sencond stage impeller (5), middle stator (4) is set, between three grades of impellers (6) and level Four impeller (8), rear guide vane (9) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207035084U CN202991624U (en) | 2012-12-19 | 2012-12-19 | Combined serial blade grid local fan for mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207035084U CN202991624U (en) | 2012-12-19 | 2012-12-19 | Combined serial blade grid local fan for mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991624U true CN202991624U (en) | 2013-06-12 |
Family
ID=48562808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207035084U Expired - Fee Related CN202991624U (en) | 2012-12-19 | 2012-12-19 | Combined serial blade grid local fan for mining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202991624U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047177A (en) * | 2012-12-19 | 2013-04-17 | 平安电气股份有限公司 | Mining combined local fan with tandem cascade |
-
2012
- 2012-12-19 CN CN2012207035084U patent/CN202991624U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047177A (en) * | 2012-12-19 | 2013-04-17 | 平安电气股份有限公司 | Mining combined local fan with tandem cascade |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20181219 |