CN204493229U - A kind of double suction dual-supporting centrifugal blower - Google Patents
A kind of double suction dual-supporting centrifugal blower Download PDFInfo
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- CN204493229U CN204493229U CN201520046973.9U CN201520046973U CN204493229U CN 204493229 U CN204493229 U CN 204493229U CN 201520046973 U CN201520046973 U CN 201520046973U CN 204493229 U CN204493229 U CN 204493229U
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- 238000010168 coupling process Methods 0.000 claims abstract description 9
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- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 6
- 241000237858 Gastropoda Species 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 5
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 229910000746 Structural steel Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 238000005242 forging Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
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- 238000001816 cooling Methods 0.000 description 3
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- 238000001514 detection method Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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Abstract
The utility model discloses a kind of double suction dual-supporting centrifugal blower, comprise common bed, drive motor, coupling, bearing housing, main shaft, casing and impeller, described common bed is arranged with some mounting holes, motor base is provided with on the right side of common bed, motor base is provided with drive motor, and drive motor is driven by coupling and is connected with main shaft; Described main shaft two ends are arranged with two bearing housings, and bearing housing is arranged on common bed by bearing housing base, and bearing housing base is isosceles trapezoid cast iron base, and for hollow is arranged in the middle of bearing housing base, described casing is made and cutd open horizontal fraction; The utility model runs more steady, long service life, and fan efficiency is high, reduce the air inlet angle of attack of impeller eye, thus reduce impeller flow losses, overcome the problem caused because impeller outlet velocity distribution is uneven, be conducive to improving air quantity, blast and efficiency, reduce rotational noise.
Description
Technical field
The utility model relates to a kind of blower fan field, specifically a kind of double suction dual-supporting centrifugal blower.
Background technique
Centrifugal blower is the mechanical energy relying on input, and improve gas pressure and to supply gas side by side the machinery of body, it is a kind of driven fluid machinery.Centrifugal blower is widely used in factory, mine, tunnel, cooling tower, vehicle, the ventilation of boats and ships and building, dust discharge and cooling; The ventilation of boiler and industrial furnace and air inducing; Cooling in the apparatus of air conditioning and domestic electric appliance and ventilation; The oven dry of cereal and selecting and recommending; The inflation of wind-tunnel wind regime and Hovercraft and propelling etc.With tongue structure near centrifugal blower volute outlet, be called snail tongue, its effect is shunted by the air-flow of guiding volute outlet, prevents portion gas at spiral case internal circulation flow.According to the length of snail tongue and the snail tongue difference from the radial distance of impeller, snail tongue is divided into the forms such as sharp tongue, dark tongue, shallow tongue peace tongue.Point tongue is the longest, the shortest from the radial distance of impeller, the most favourable to air quantity, blast and efficiency, but noise is maximum; And flat tongue is the shortest, the longest from the radial distance of impeller, to air quantity, blast and efficiency least favorable, but noise is best.For the centrifugal blower of single admission, because air-flow needs to turn over 90 ° from impeller inlet to impeller outlet, larger flow separation is there is near shroud side at impeller outlet, form the vortex of low speed, so just cause impeller outlet speed skewness vertically, high near impeller hub disk side speed, low near impeller front disc side speed.If adopt straight snail tongue, this uneven impeller outlet air-flow just cannot be taken into account.Adopt sharp tongue, favourable to the low speed exit flow near impeller front disc side, greatly can reduce the probability that this fraction produces backflow, but unfavorable to the high speed exit flow near impeller hub disk side, very large Rotation Noise can be produced.Adopt flat tongue then favourable to the high speed exit flow near impeller hub disk side, but very unfavorable to the low speed exit flow near impeller front disc side, and be easy to produce backflow, air quantity, blast and efficiency all can sharply decline.
Model utility content
The purpose of this utility model is to provide one to operate steadily, and improves the double suction dual-supporting centrifugal blower of air quantity, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technological scheme:
A kind of double suction dual-supporting centrifugal blower, comprise common bed, drive motor, coupling, bearing housing, main shaft, casing and impeller, described common bed is arranged with some mounting holes, motor base is provided with on the right side of common bed, motor base is provided with drive motor, and drive motor is driven by coupling and is connected with main shaft; Described main shaft two ends are arranged with two bearing housings, and bearing housing is arranged on common bed by bearing housing base, and bearing housing base is isosceles trapezoid cast iron base, for hollow is arranged in the middle of bearing housing base; Be provided with casing in the middle of two bearing housing bases, described casing is made and is cutd open horizontal fraction, comprises upper casing and lower housing, described lower housing is fixedly mounted on common bed, upper casing is arranged on lower housing by screw, is provided with manhole door on the right side of upper casing, is welded with hanger above upper casing; Described casing internal is provided with impeller, and impeller is arranged on main shaft; Be provided with exhaust outlet above described casing, exhaust outlet is provided with snail tongue, and snail tongue is provided with snail tongue curved surface, and snail tongue curved surface is the curved surface of indent; The described casing left and right sides is arranged with intake grill, intake grill is circumferentially provided with modulating valve, modulating valve is positioned at casing internal, modulating valve end is rotatably connected to one end of modulating valve stator, the other end of modulating valve stator be connected to be positioned at intake grill home position wheel hub on, wheel hub sets firmly on casing by support; Described modulating valve stator is obliquely installed relative to the axis of main shaft; Described common bed is provided with electric actuator, electric actuator control connection modulating valve.
Further, be laid with some reinforcement gussets outside described casing, inside is provided with thick-walled seamless steel pipes.
Further, double-row self-aligning roller bearing is provided with in described bearing housing.
Further, described impeller adopts 16Mn high strength heat resistant low-alloy structural steel to make.
Further, described main shaft adopts high-quality alloy steel solid forging to process.
Compared with prior art, the utility model main shaft adopts high-quality alloy steel solid forging to process, and through quenching with Subsequent tempering, to strengthen its comprehensive mechanical property, and through strict flaw detection; For hollow is arranged in the middle of bearing housing base, do not affect the air intake of blower fan like this, and adopt cast iron base, good rigidly, absorbing performance are good, make fan operation more steady; Impeller adopts 16Mn high strength heat resistant low-alloy structural steel to make, and this steel grade tensile strength is 45Kg/cm
2hardness can reach more than 200HB, the high strength himself had, high hardness and good technology capability, the working life of blower fan is ensured, the blade on impeller is backward wing blade blade, can avoid vortex flow and separation losses in gas flow, thus raising fun for inner efficiency, in addition, airfoil vanes also has good rigidly from amechanical angle analysis, the characteristic that intensity is high; Described modulating valve stator is obliquely installed relative to the axis of main shaft, has very large benefit to fans entrance air flow guiding, further increases the efficiency of blower fan; The modulating valve at two ends, electric actuator synchrodrive shell left and right, the angle of inclination of synchronization regulation modulating valve stator, convenient when utility model works, regulate the air output of casing; During utility model works, drive motor impeller is rotated, negative pressure is formed in the chamber of impeller, external air flow passes modulating valve stator from the intake grill of spiral case, the pre-rotation consistent with vane rotary direction can be produced through the air-flow after modulating valve stator and enter in the chamber of impeller, be conducive to the air inlet angle of attack reducing impeller eye, thus reduce impeller flow losses, improve the air quantity of blower fan; Exhaust outlet is provided with snail tongue, snail tongue is provided with snail tongue curved surface, snail tongue curved surface is the curved surface of indent, overcome the problem caused because impeller outlet velocity distribution is uneven, be conducive to improving air quantity, blast and efficiency, in addition, make impeller outlet air-flow have certain phase difference to the frequency of the Rotation Noise that snail tongue curved surface shock vibration produces along the axial distribution of drive motor, abatement to a certain extent can be obtained after the dephased noise source superposition of this tool, be conducive to reducing Rotation Noise.
Accompanying drawing explanation
Fig. 1 is the structural representation of double suction dual-supporting centrifugal blower.
Fig. 2 is the side view of double suction dual-supporting centrifugal blower.
Fig. 3 is the structural representation of exhaust outlet in double suction dual-supporting centrifugal blower.
In figure: 1-common bed, 2-drive motor, 21-motor base, 3-coupling, 4-bearing housing, 41-bearing housing base, 5-main shaft, 6-casing, 61-upper casing, 62-lower housing, 63-manhole door, 64-hanger, 65-exhaust outlet, 651-snail tongue, 652-snail tongue curved surface, 66-intake grill, 7-impeller, 8-modulating valve, 81-modulating valve stator, 82-wheel hub, 9-electric actuator.
Embodiment
Be described in more detail below in conjunction with the technological scheme of embodiment to this patent.
Refer to Fig. 1-3, a kind of double suction dual-supporting centrifugal blower, comprise common bed 1, drive motor 2, coupling 3, bearing housing 4, main shaft 5, casing 6 and impeller 7, described common bed 1 is arranged with some mounting holes, motor base 21 is provided with on the right side of common bed 1, motor base 21 is provided with drive motor 2, drive motor 2 is driven by coupling 3 and is connected with main shaft 5, main shaft 5 adopts high-quality alloy steel solid forging to process, and through quenching with Subsequent tempering, to strengthen its comprehensive mechanical property, and through strict flaw detection, described main shaft 5 two ends are arranged with two bearing housings 4, bearing housing 4 is arranged on common bed 1 by bearing housing base 41, bearing housing base 41 is isosceles trapezoid cast iron base, for hollow is arranged in the middle of bearing housing base 41, do not affect the air intake of blower fan like this, and employing cast iron base, good rigidly, absorbing performance are good, make fan operation more steady, casing 6 is provided with in the middle of two bearing housing bases 41, described casing 6 is made and is cutd open horizontal fraction, comprise upper casing 61 and lower housing 62, described lower housing 62 is fixedly mounted on common bed 1, upper casing 62 is arranged on lower housing 61 by screw, so that lifting and installation rotor, is provided with manhole door 63 on the right side of upper casing 61, be welded with hanger 64 above upper casing 61, facilitate staff to install and overhaul, described casing 6 inside is provided with impeller 7, and impeller 7 is arranged on main shaft 5, and impeller 7 adopts 16Mn high strength heat resistant low-alloy structural steel to make, and this steel grade tensile strength is 45Kg/cm
2hardness can reach more than HB200, the high strength himself had, high hardness and good technology capability, the working life of blower fan is ensured, the blade on impeller 7 is backward wing blade blade, can avoid vortex flow and separation losses in gas flow, thus raising fun for inner efficiency, in addition, airfoil vanes also has good rigidly from amechanical angle analysis, the characteristic that intensity is high, exhaust outlet 65 is provided with above described casing 6, exhaust outlet 65 is provided with snail tongue 651, snail tongue 651 is provided with snail tongue curved surface 652, snail tongue curved surface 652 is the curved surface of indent, overcome due to the uneven problem caused of impeller 7 distribution of exit velocities, be conducive to improving air quantity, blast and efficiency, in addition, impeller 7 exit flow is made to have certain phase difference to the frequency of the Rotation Noise that snail tongue curved surface 652 shock vibration produces along the axial distribution of drive motor 2, abatement to a certain extent can be obtained after the dephased noise source superposition of this tool, be conducive to reducing Rotation Noise, reach reduction rotational noise, described casing 6 left and right sides is arranged with intake grill 66, intake grill 66 is circumferentially provided with modulating valve 8, it is inner that modulating valve 8 is positioned at casing 6, shorten the axial length of blower fan, make blower fan structure compacter, modulating valve 8 end is rotatably connected to one end of modulating valve stator 81, the other end of modulating valve stator 81 be connected to be positioned at intake grill 66 home position wheel hub 82 on, wheel hub 82 sets firmly on casing 6 by support, described modulating valve stator 81 is obliquely installed relative to the axis of main shaft 5, has very large benefit to fans entrance air flow guiding, further increases the efficiency of blower fan, described common bed 1 is provided with electric actuator 9, electric actuator 9 drives and connects modulating valve 8, the modulating valve 8 at electric actuator 9 synchrodrive shell about 6 two ends, the angle of inclination of synchronization regulation modulating valve stator 81, convenient when utility model works, regulate the air output of casing 6, during utility model works, drive motor 2 impeller 7 is rotated, negative pressure is formed in the chamber of impeller 7, external air flow passes modulating valve stator 81 from the intake grill 66 of spiral case 6, the pre-rotation consistent with impeller 7 sense of rotation can be produced through the air-flow after modulating valve stator 81 and enter in the chamber of impeller 7, be conducive to the air inlet angle of attack reducing impeller 7 entrance, thus reduce impeller 7 flow losses, improve the air quantity of blower fan.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned mode of execution, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (5)
1. a double suction dual-supporting centrifugal blower, comprise common bed (1), drive motor (2), coupling (3), bearing housing (4), main shaft (5), casing (6) and impeller (7), it is characterized in that, (1) is arranged with some mounting holes to described common bed, common bed (1) right side is provided with motor base (21), motor base (21) is provided with drive motor (2), drive motor (2) is driven by coupling (3) and is connected with main shaft (5); Described main shaft (5) two ends are arranged with two bearing housings (4), bearing housing (4) is arranged on common bed (1) by bearing housing base (41), bearing housing base (41) is isosceles trapezoid cast iron base, for hollow is arranged in the middle of bearing housing base (41); Casing (6) is provided with in the middle of two bearing housing bases (41), described casing (6) is made and is cutd open horizontal fraction, casing (6) comprises upper casing (61) and lower housing (62), described lower housing (62) is fixedly mounted on common bed (1), upper casing (62) is arranged on lower housing (61) by screw, upper casing (61) right side is provided with manhole door (63), and upper casing (61) top is welded with hanger (64); Described casing (6) inside is provided with impeller (7), and impeller (7) is arranged on main shaft (5); Described casing (6) top is provided with exhaust outlet (65), exhaust outlet (65) is provided with snail tongue (651), snail tongue (651) is provided with snail tongue curved surface (652), the curved surface that snail tongue curved surface (652) is indent; Described casing (6) left and right sides is arranged with intake grill (66), intake grill (66) is circumferentially provided with modulating valve (8), it is inner that modulating valve (8) is positioned at casing (6), modulating valve (8) end is rotatably connected to one end of modulating valve stator (81), the other end of modulating valve stator (81) is connected to and is positioned on the wheel hub (82) of intake grill (66) home position, and wheel hub (82) sets firmly on casing (6) by support; Described modulating valve stator (81) is obliquely installed relative to the axis of main shaft (5); Described common bed (1) is provided with electric actuator (9), electric actuator (9) control connection modulating valve (8).
2. double suction dual-supporting centrifugal blower according to claim 1, is characterized in that, described casing (6) outside is laid with some reinforcement gussets, and inside is provided with thick-walled seamless steel pipes.
3. double suction dual-supporting centrifugal blower according to claim 1, is characterized in that, described bearing housing is provided with double-row self-aligning roller bearing in (4).
4. double suction dual-supporting centrifugal blower according to claim 1, is characterized in that, described impeller (7) adopts 16Mn high strength heat resistant low-alloy structural steel to make.
5. double suction dual-supporting centrifugal blower according to claim 1, is characterized in that, described main shaft (5) adopts high-quality alloy steel solid forging to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520046973.9U CN204493229U (en) | 2015-01-22 | 2015-01-22 | A kind of double suction dual-supporting centrifugal blower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520046973.9U CN204493229U (en) | 2015-01-22 | 2015-01-22 | A kind of double suction dual-supporting centrifugal blower |
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| CN204493229U true CN204493229U (en) | 2015-07-22 |
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| CN201520046973.9U Expired - Fee Related CN204493229U (en) | 2015-01-22 | 2015-01-22 | A kind of double suction dual-supporting centrifugal blower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519405A (en) * | 2019-01-07 | 2019-03-26 | 河北华晟环保设备科技有限公司 | The dedicated extra-high pressure fan of ash furnace |
| CN110259711A (en) * | 2019-07-01 | 2019-09-20 | 肖志林 | A kind of bilobed wheel low-noise fan |
| CN113464472A (en) * | 2021-08-04 | 2021-10-01 | 镇江市丹徒区粮机厂有限公司 | Energy-saving plateau fan structure |
-
2015
- 2015-01-22 CN CN201520046973.9U patent/CN204493229U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519405A (en) * | 2019-01-07 | 2019-03-26 | 河北华晟环保设备科技有限公司 | The dedicated extra-high pressure fan of ash furnace |
| CN109519405B (en) * | 2019-01-07 | 2023-09-29 | 河北华晟环保设备科技有限公司 | Special extra-high voltage fan for ash kiln |
| CN110259711A (en) * | 2019-07-01 | 2019-09-20 | 肖志林 | A kind of bilobed wheel low-noise fan |
| CN113464472A (en) * | 2021-08-04 | 2021-10-01 | 镇江市丹徒区粮机厂有限公司 | Energy-saving plateau fan structure |
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| 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: 20150722 |