CN108980083A - Low noise high-efficiency axial-flow blower - Google Patents
Low noise high-efficiency axial-flow blower Download PDFInfo
- Publication number
- CN108980083A CN108980083A CN201810864971.9A CN201810864971A CN108980083A CN 108980083 A CN108980083 A CN 108980083A CN 201810864971 A CN201810864971 A CN 201810864971A CN 108980083 A CN108980083 A CN 108980083A
- Authority
- CN
- China
- Prior art keywords
- wheel hub
- motor
- carbon steel
- flow blower
- low noise
- 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.)
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Classifications
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to axial flow blower fields, specifically disclose a kind of low noise high-efficiency axial-flow blower, mute cover including tubular, mute cover is by carbon steel internal layer, porous foam metal plate and carbon steel outer layer is successively compound constitutes, inner layer glass cotton is equipped between carbon steel internal layer and porous foam metal plate, glass outer cotton is equipped between carbon steel outer layer and porous foam metal plate, motor is installed in mute cover, the shaft of motor is arranged with wheel hub, wheel hub side is fixedly connected with several blades, and the back edge of the blade is zigzag.Noise caused by blower can be effectively reduced in the present apparatus.
Description
Technical field
The invention belongs to axial flow blower fields, and in particular to a kind of low noise high-efficiency axial-flow blower.
Background technique
It is a kind of machinery of gas energy that axial flow blower, which is the energy conversion of prime mover, is commonly used to mine, chemical industry, water
The industries such as mud, Environmental-protecting dust-removing, weaving, purposes are wider.The usage amount of conventional fan is big, and power consumption is big, and noise pollution is serious, therefore grinds
Produced environment friendly low noise, energy-efficient blower have become the most important thing of China's blower development.
In axial flow blower operational process, the aerodynamic noises such as rotational noise and eddy current crack and mechanical noise etc. can be generated,
Its noise is broadband noise.Noise pollution constitutes serious harm, national phase to people, animal, instrument and meter and building
After the industry of issuing and implementation " industrial and mining enterprises' noise sanitary standard " and " urban environment noise pollution prevention ordinance " strict regulations
The noise level limit of the job site in the workshop and Work places of enterprise.Therefore, from save the cost, fan noise pollution is reduced, is changed
From the point of view of kind staff's working environment, designs and develop that a kind of low noise axial fan is mute to be covered with highly important meaning
Justice.
The transformation in terms of blower fan structure and changing in terms of blower sound-absorbing material currently, existing blower noise-reduction method focuses mostly on
Into etc..But many noise-reduction method field conducts are more complicated, and noise reduction effect is limited, it is difficult to realize effective noise reduction of blower.
Summary of the invention
The purpose of the present invention is to provide a kind of low noise high-efficiency axial-flow blowers, are made an uproar caused by blower with being effectively reduced
Sound.
In order to achieve the above object, base case of the invention provides a kind of low noise high-efficiency axial-flow blower, including tubular
Mute cover, mute cover is by carbon steel internal layer, porous foam metal plate and carbon steel outer layer is successively compound constitutes, carbon steel internal layer
It is equipped with inner layer glass cotton between porous foam metal plate, glass outer is equipped between carbon steel outer layer and porous foam metal plate
Cotton is equipped with motor in mute cover, and the shaft of motor is arranged with wheel hub, and wheel hub is threadedly secured in the roller end of motor, wheel hub
Side is fixedly connected with several blades, and the back edge of the blade is zigzag.
The principle of this base case is: the noise generated in axial flow blower operational process, the porous bubble in silencer cover
In the outside transmittance process of foam metal, the small hole wall of sound wave and porous foam metal generates friction and reflection, and acoustic wave segment is absorbed
Or offset, sound wave can be converted into thermal energy from viscosity resistance face, to reduce the noise transmitted outward.
The beneficial effect of this base case is: 1. present apparatus are arranged disappearing for special composite structure outside conventional axial flow extension set
Sound cover, while sound wave is converted thermal energy by the aperture in porous foam metal, plays Noise Reduction.
2. inside and outside layer of mineral wool further improves the effect for reducing noise, while by inside and outside layer carbon element steel layer and foam
Metal separates, and prevents because of amplitude difference, and foam metal is directly contacted with carbon element steel layer when vibration equipment causes to damage.
The eddy current loss that can be effectively reduced at blade air outlet 3. the back edge of blade is serrated, can be rationally when operation
Avoid surge area, improve the aerodynamic quality of blade, thus improve efficiency and make blade rotation when noise it is lower.
Prioritization scheme one: the blade is twisted board shape.Using distortion plate vane, the section shape with comparison rule
Shape, therefore processing technology is simple, it is light-weight, considerably reduce material cost and processing cost.
Prioritization scheme two: the blade has petiole, and petiole passes through wheel hub wall and is fixed with gusset, and gusset screw thread connects
It connects on wheel hub.The threaded connection of gusset and wheel hub is unclamped, blade is rotated to side centered on petiole can adjust the angle of blade
Degree, it is convenient and efficient.
Prioritization scheme three: the air intake of the mute cover is equipped with collector.The setting of collector improves the effect of blower
Rate.
Prioritization scheme four: the hub end is fixedly connected with fixed plate, and fixed plate is bolted on turning for motor
The end of axis, wedge groove in the shaft of motor, wedge groove inner wall have abutment face, and for abutment face towards wheel hub, abutment face is wedge shape
Face is combined with wedge block on abutment face, and the one end of wedge block far from abutment face offsets with wheel hub, the one end of wheel hub far from fixed plate
It is fixedly connected with fixed link, reaction ring is fixedly connected in fixed link, connecting rod is fixed on the shell on motor, connecting rod is separate
One end of motor, which slides up and down, is connected with sliding bar, and sliding bar is located between the inner wall and wedge block of reaction ring, and sliding bar is remote
One end from connecting rod is rotatably connected to the idler wheel to offset with the inner wall of reaction ring, is fixedly connected on sliding bar by pressing spring,
It is located at the top of wedge block far from one end of sliding bar by pressing spring.Reaction ring, idler wheel, sliding bar, wedge mechanism and pressing
Spring forms the structure for making up gap, prevents the end of the shaft of fixed plate and motor from generating noise when generating gap.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of low noise of embodiment of the present invention high-efficiency axial-flow blower；
Fig. 2 is enlarged drawing at A in Fig. 1；
Fig. 3 is the enlarged drawing in Fig. 1 at B；
Fig. 4 is the enlarged drawing in Fig. 3 at C；
Fig. 5 is the enlarged drawing in Fig. 4 at D；
Fig. 6 is the cross-sectional view in the direction F-F in Fig. 4；
Fig. 7 is the structural schematic diagram of blade.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail:
Appended drawing reference in Figure of description include: mute cover 1, motor 2, blade 3, collector 4, wheel hub 5, fixed plate 6,
Shaft 7, carbon steel internal layer 8, carbon steel outer layer 9, porous foam metal plate 10, connecting rod 11, the fixed link 12, wedge block of motor
13, reaction ring 14, idler wheel 15, sliding bar 16, press pressing spring 17, sawtooth 18.
Embodiment: the low noise high-efficiency axial-flow blower in this programme, as depicted in figs. 1 and 2, the mute cover 1 including tubular,
Mute cover 1 by carbon steel internal layer 8, inner layer glass cotton, porous foam metal plate 10, glass outer cotton and carbon steel outer layer 9 according to
Secondary compound composition, in order to reduce the mechanical vibration noise between carbon steel internal layer 8 and porous foam metal plate 10, in carbon steel
The inner layer glass cotton of 10mm thickness is arranged between layer 8 and porous foam metal plate 10.Equally, in carbon steel outer layer 9 and porous bubble
Also the glass outer cotton of 10mm thickness is arranged between foam metal plate 10.Porous foam metal plate 10 and carbon steel internal layer 8 and carbon steel
It is fixedly connected between outer layer 9 using rivet, is connected using straight tenon with straight trough between each block of porous foam metal plate 10.
As shown in Figure 1, the air intake of mute cover 1 is equipped with collector 4, motor 2, motor are coaxially installed in mute cover 1
Shaft 7 be arranged with wheel hub 5,5 end of wheel hub is fixedly connected with fixed plate 6, and fixed plate 6 is bolted on the shaft of motor
7 end.As shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, wedge groove in the shaft 7 of motor, wedge groove inner wall has abutment face, against
Facing towards wheel hub 5, abutment face is lozenges, and wedge block 13 is combined on abutment face, and 13 right end of wedge block offsets with wheel hub.Wheel hub
5 left ends are fixedly connected with fixed link 12, reaction ring 14 are fixedly connected in fixed link 12, on the inside of reaction ring 14 there are two tools
Arcuation protrusion.Connecting rod 11 is fixed on shell on motor 2,11 right end of connecting rod is provided with vertical sliding slot, slides up and down in sliding slot
It is connected with horizontal sliding bar 16, the reset spring for resetting sliding bar 16 is fixedly connected in sliding slot.Sliding bar 16 is located at interior
Between the inner wall and wedge block 13 of cam ring 14, protrusion is oppositely arranged with wedge block 13 along 5 diameter of wheel hub, and 16 right end of sliding bar turns
It is dynamic to be connected with the idler wheel 15 to offset with the inner wall of reaction ring 14.It is fixedly connected on sliding bar 16 by pressing spring 17, presses bullet
17 lower end of spring is located at the top of wedge block 13.
As shown in fig. 7,5 side of wheel hub is fixedly connected with several blades 3, blade 3 is twisted board shape, the back edge of blade 3
Just there are several sawtooth 18.Integrally formed with petiole on blade 3, insertion hole is offered on wheel hub, petiole passes through wheel hub from insertion hole
Wall is simultaneously fixedly connected with gusset (welding locking nut and gusset after connection) by clamping screw, and gusset passes through positioning
Bolt thread is connected on wheel hub.Positioning bolt is dismantled when needing to adjust blade, using petiole as rotation center moving blade
Just the angle of blade can be adjusted.
The noise generated in axial flow blower operational process, in the outside transmittance process of porous foam metal in silencer cover,
The small hole wall of sound wave and porous foam metal generates friction and reflection, and acoustic wave segment is absorbed or offsets, and sound wave can be from viscous resistance
Power face is converted into thermal energy, to reduce the noise transmitted outward.In addition the setting of inside and outside layer mineral wool, ensure that noise drops
Inefficient fruit, noise slippage reach 4.7dB-9.2dB.
In addition, the shaft 7 and wheel hub 5 of motor rotate, and idler wheel 15 is in cam ring as shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5 and Fig. 6
It is rolled on the inner wall of ring 14.When idler wheel 15 is rolled to the protrusion on 14 inner wall of reaction ring, move down idler wheel 15.Idler wheel
15 drive sliding bar 16 to move down when mobile, to make to move down by pressing spring 17, and press wedge block 13.
At this time if the bolt in fixed plate 6 has loosening, fixed plate 6 and the end of the shaft 7 of motor generate gap, push away by pressing spring 17
Dynamic wedge block 13 is mobile to wedge groove, and the lozenges of wedge block 13 and wedge groove moves right against and by wheel hub 5, to make up
The gap that the end of the shaft 7 of fixed plate 6 and motor generates, and then between preventing the end of fixed plate 6 and the shaft of motor 7 from generating
Noise is generated when gap.And wedge block 13 cannot be pushed by pressing spring 17, be avoided wedge when not loosening by the bolt in fixed plate 6
The damage of shape block.
What has been described above is only an embodiment of the present invention, and common knowledge does not describe excessively herein in scheme.It should be pointed out that
For those skilled in the art, without departing from the structure of the invention, several modifications and improvements can also be made,
These also should be considered as protection scope of the present invention, these all will not influence the effect and patent practicability that the present invention is implemented.
The scope of protection required by this application should be based on the content of the claims, and the records such as specific embodiment in specification can
For explaining the content of claim.
Claims (5)
1. low noise high-efficiency axial-flow blower, it is characterised in that: the mute cover including tubular, mute cover is by carbon steel internal layer, porous
Foam metal plate and carbon steel outer layer successively compound composition, are equipped with inner layer glass between carbon steel internal layer and porous foam metal plate
Cotton is equipped with glass outer cotton, is equipped with motor, the shaft of motor in mute cover between carbon steel outer layer and porous foam metal plate
It is arranged with wheel hub, wheel hub is threadedly secured in the roller end of motor, and wheel hub side is fixedly connected with several blades, the blade
Back edge is zigzag.
2. low noise high-efficiency axial-flow blower according to claim 1, it is characterised in that: the blade is twisted board shape.
3. low noise high-efficiency axial-flow blower according to claim 2, it is characterised in that: the blade has petiole, petiole
Across wheel hub wall and it is fixed with gusset, gusset is threaded on wheel hub.
4. low noise high-efficiency axial-flow blower according to claim 3, it is characterised in that: the air intake of the mute cover is installed
There is collector.
5. low noise high-efficiency axial-flow blower according to claim 1, it is characterised in that: the hub end is fixedly connected with
Fixed plate, fixed plate are bolted on the end of the shaft of motor, wedge groove in the shaft of motor, and wedge groove inner wall has
Abutment face, for abutment face towards wheel hub, abutment face is lozenges, wedge block is combined on abutment face, wedge block is far from abutment face
One end offsets with wheel hub, and wheel hub is fixedly connected with fixed link far from one end of fixed plate, is fixedly connected with cam ring in fixed link
Ring is fixed with connecting rod on the shell on motor, and connecting rod slides up and down far from one end of motor and is connected with sliding bar, and sliding bar is located at
Between the inner wall and wedge block of reaction ring, sliding bar is rotatably connected to far from one end of connecting rod and offsets with the inner wall of reaction ring
Idler wheel, be fixedly connected with by pressing spring on sliding bar, be located at the top of wedge block far from one end of sliding bar by pressing spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810864971.9A CN108980083B (en) | 2018-08-01 | 2018-08-01 | Low-noise high-efficiency axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810864971.9A CN108980083B (en) | 2018-08-01 | 2018-08-01 | Low-noise high-efficiency axial flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980083A true CN108980083A (en) | 2018-12-11 |
| CN108980083B CN108980083B (en) | 2020-01-07 |
Family
ID=64552257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810864971.9A Active CN108980083B (en) | 2018-08-01 | 2018-08-01 | Low-noise high-efficiency axial flow fan |
Country Status (1)
| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1096816A (en) * | 1965-02-15 | 1967-12-29 | Trist Mouldings & Seals Ltd | Shaft glands |
| CN1840938A (en) * | 2005-04-01 | 2006-10-04 | 博格华纳公司 | Wedge-damped blade tensioner |
| CN101545518A (en) * | 2008-03-29 | 2009-09-30 | 尹学军 | Vibration isolation device and application thereof |
| CN102493994A (en) * | 2011-12-21 | 2012-06-13 | 上海三一科技有限公司 | Filled type gap adjusting device and method |
| CN103032381A (en) * | 2013-01-05 | 2013-04-10 | 华北电力大学（保定） | Enclosure for reducing noise of axial flow fan |
-
2018
- 2018-08-01 CN CN201810864971.9A patent/CN108980083B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1096816A (en) * | 1965-02-15 | 1967-12-29 | Trist Mouldings & Seals Ltd | Shaft glands |
| CN1840938A (en) * | 2005-04-01 | 2006-10-04 | 博格华纳公司 | Wedge-damped blade tensioner |
| CN101545518A (en) * | 2008-03-29 | 2009-09-30 | 尹学军 | Vibration isolation device and application thereof |
| CN102493994A (en) * | 2011-12-21 | 2012-06-13 | 上海三一科技有限公司 | Filled type gap adjusting device and method |
| CN103032381A (en) * | 2013-01-05 | 2013-04-10 | 华北电力大学（保定） | Enclosure for reducing noise of axial flow fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108980083B (en) | 2020-01-07 |
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Effective date of registration: 20221102 Address after: No. 14-11, Building 2, No. 88 Erlang Road, Jiulongpo District, Chongqing 400050 Patentee after: Chongqing gexinman Technology Co.,Ltd. Address before: 402260 No. 1 North and South Avenue, Binjiang new town, Jiangjin District, Chongqing. Patentee before: CHONGQING VOCATIONAL INSTITUTE OF ENGINEERING |
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