CN1063531C - New-type local blower - Google Patents
New-type local blower Download PDFInfo
- Publication number
- CN1063531C CN1063531C CN97101664A CN97101664A CN1063531C CN 1063531 C CN1063531 C CN 1063531C CN 97101664 A CN97101664 A CN 97101664A CN 97101664 A CN97101664 A CN 97101664A CN 1063531 C CN1063531 C CN 1063531C
- Authority
- CN
- China
- Prior art keywords
- fan blade
- straight plate
- hollow cylinder
- cover
- cylinder axle
- 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
Links
- 238000004804 winding Methods 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract description 2
- 238000005422 blasting Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a novel local blower which is composed of a hollow cylinder, a motor stator winding, a rotor winding, spiral blades, straight blades, a front end cover, a rear end cover, a bearing, a protective cover for the straight blades, a sealing groove, etc. Compared with the prior art, the present invention has double functions of ventilation and air exhaust; the torque relation of the blower is reasonable, the time for discharging blasting smoke can be effectively shortened, and the production efficiency is improved; because the structural design of the present invention is reasonable, the present invention has the advantages of electric energy saving, low noise, etc.
Description
The present invention relates to a kind of ventilation equipment, particularly relate to the secondary fan that acts under a kind of coal mine.
Driving face ventilates and generally uses explosion-proof type axial flow secondary fan under the coal mine, is called for short portable blower.In recent years promote the use of a kind of counter-rotating fan in national colliery again.The malleation that mining face under mine utilizes portable blower to produce is crossed air duct with fresh wind circulation and is delivered to working surface, the harmful gas of working surface is by fresh distinguished and admirable squeezing away, flow to the return aircourse by the tunnel at return air eye place, the negative pressure that is produced by the ground ventilation equipment is extracted out then, enters atmosphere.The tunnel that the gas that working surface is discharged is flowed through is considered as air-return duct, and this part tunnel reaches 50～100 meters, and solely the tunnel of head driving can reach km.The major defect of prior art, the one, permissible motor is installed in the inside of portable blower housing, the impeller of motor shaft end mounting strap wind wing, wind wing work mean radius is greater than the motor rotor radius, thereby makes that output power of motor is big, noise is big; The 2nd, prior art adopts positive pressure ventilation, thereby the mounting point of having limited portable blower, promptly can't shorten the length of looking air-return duct, makes that the fume emission speed after blowing out is very slow, influences manufacturing efficiency.In recent years the counter-rotating fan of Tui Guanging is that two permissible motors are installed in enclosure interior, and makes impeller that the two motors axle head installs relatively and inverted running though can improve the ventilation blast, does not address the above problem yet at all.
The purpose of this invention is to provide a kind of secondary fan that can overcome the prior art shortcoming.
The object of the present invention is achieved like this, that is: permissible motor rotor iron core and hollow cylinder axle are assembled into one, the inwall of hollow cylinder axle is equipped with 45 ° of fixedly spiral fan blades of helix angle, motor is made asynchronous cage rotor structure, motor stator housing and front cover and rear end cover seam fitted bolt are fixed, the hollow cylinder axle is connected with rear end cover with front cover by the bearing that is embedded on the inboard seam of front cover and rear end cover, and the radial clearance of distribution is vertically arranged between rotor iron core and the stator iron core necessarily.Rear end cover outside left at hollow cylinder axle external peripheral surface is equipped with straight plate fan blade; straight plate fan blade turns forward, with axis at 45～60 ° of angles; at the back end outer circumference surface of hollow cylinder axle, the outside left of straight plate fan blade straight plate fan blade safety cover is installed; on straight plate fan blade safety cover, be evenly equipped with intake opening, be coupling at front cover and rear end cover and straight plate fan blade safety cover and hollow cylinder and touch the position and be respectively equipped with seal arrangement.
The present invention can be designed and manufactured into secondary fan's series product of different hollow cylinder axle internal diameters and different motor plate logarithms according to the different requirements of air quantity and blast.
The present invention compared with prior art has the following advantages:
1, installing spiral fan blade in the hollow cylinder axle, straight plate fan blade is installed in its outer rear end, and the machine of having realized is logical, row's dual functions.Be that hollow cylinder axle internal spiral fan blade plays the air draft effect, air duct is crossed in the working surface wind circulation directly entered four air channels, straight plate fan blade plays to the face-airing effect, its wind direction blows to working surface with an axial ° angle, at 45～60, play the air curtain effect, prevent the working surface air-flow to external diffusion, and press to working surface, to fresh distinguished and admirable the curbing function in tunnel.
2, the moment of blower fan relation is more reasonable, existing portable blower fan blade mean effort radius is about 2 times of motor rotor electromagnetic force radius, and the mean effort radius of hollow cylinder axle internal spiral fan blade of the present invention is 0.5 times of motor rotor electromagnetic force radius, straight plate fan blade mean effort radius is that motor rotor electromagnetic force radius is compared and is no more than 1.1 times, logical, the required motor power (output) of row's two functions is no more than existing 0.8 times with air quantity portable blower power, so can realize energy-conservation.
3, exhaust air rate is more than or equal to ventilation, and the axial force of the two generation is opposite, and is reasonable in design, and the two can be cancelled out each other, and alleviates axial load.
4, air draft is flowed in the hollow cylinder axle, before and after the blower fan air duct is installed all, so its noise is very low.Straight plate fan blade is centrifugal ventilation plant, and intake grill is for being circular layout, and near fan blade, resistance is very little, so its noise is little.
5, the present invention adopts negative pressure ventilation, thus the mounting point of portable blower can be to greatest extent near working surface (outside the safe distance of blowing out), the rear end air duct return aircourse of can going directly.Therefore, shorten the smoke evacuation time greatly, enhance productivity, also can be electromechanical equipment safe operating conditions is provided.
Fig. 1 is the sectional view of a kind of secondary fan structure.
Fig. 2 is the side view of a kind of secondary fan structure.
Most preferred embodiment of the present invention is; the rotor 5 of permissible motor is assembled into one with hollow cylinder axle 1; the inwall of hollow cylinder axle 1 is equipped with 45 ° of fixedly spiral fan blades 10 of helix angle; motor is made for asynchronous cage rotor structure; the housing of stator core in motor 6 and front cover 3 and rear end cover 4 seam fitted bolts are fixed; hollow cylinder axle 1 is connected with rear end cover 4 with front cover 3 with 7 with bearing 2 on the rear end cover 4 seam inboards by being embedded in front cover 3; the radial clearance that necessarily distributes is vertically arranged between rotor iron core 5 and stator iron core 6; outside left at the rear end cover 4 of the external peripheral surface of hollow cylinder axle 1 is equipped with straight plate fan blade 8; straight plate fan blade 8 turns forward; with axis at 45～60 ° of angles; back end outer circumference surface at hollow cylinder axle 1; the outside left of straight plate fan blade 8 is equipped with straight plate fan blade safety cover 9; on straight plate fan blade safety cover 9, be evenly equipped with the intake opening 11 of some, at front cover 3; rear end cover 4 and straight plate fan blade safety cover 9 are respectively equipped with seal arrangement 12 with the contact position of hollow cylinder axle 1.
Working principle is: permissible motor staor winding 6 is connected threephase AC, produce rotating magnetic field, rotor winding 5 produces induction current, induction field and electromagnetic force, rotor 5 rotates with asynchronous revolution n, drive with rotor 5 assembling all-in-one-piece hollow cylinder axles 1 and rotate, it is distinguished and admirable that spiral fan blade 10 rotations that hollow cylinder axle 1 inwall is equipped with fixing helix angle produce negative pressure, and the harmful gas of front end (working surface) by preceding air duct suction, and is entered air-return duct by back air duct.The malleation that the straight plate fan blade rotation that install hollow cylinder axle 1 rear end produces is distinguished and admirable, with 45 °～60 ° tilt angle and certain pressure, blow to front end (working surface), play the air curtain effect, prevent harmful gas to external diffusion, affect the fresh distinguished and admirable working surface of pressing to, thereby realize shortening the artillery salvo cigarette time, enhance productivity, for the electromechanical equipment operation provides safe operating conditions.
Claims (1)
1; a kind of secondary fan; be by housing; stator core in motor and winding; rotor iron core sliver and end ring; the hollow cylinder axle; the spiral fan blade; end cap; straight plate fan blade; straight plate blade cover; bearing and seal arrangement assemble; it is characterized in that: the rotor iron core of permissible motor and the Cylindorical rod of hollow are assembled into one; the inwall of hollow cylinder axle is equipped with 45 ° of fixedly spiral fan blades of helix angle; motor rotor is made for asynchronous cage rotor structure; the motor stator housing is fixed by front cover and rear end cover seam fitted bolt; the hollow cylinder axle is connected with rear end cover with front cover by the bearing that is embedded in front cover and rear end cover seam inboard; the radial clearance that necessarily distributes is vertically arranged between rotor iron core and stator iron core; outside left at the rear end cover of the external peripheral surface of hollow cylinder axle is equipped with straight plate fan blade; straight plate fan blade turns forward; with axis at 45～60 ° of angles; back end outer circumference surface at the hollow cylinder axle; the outside left of straight plate fan blade is equipped with straight plate fan blade safety cover; on straight plate fan blade safety cover, be evenly equipped with the intake opening of some, at front cover; the contact position of rear end cover and straight plate fan blade safety cover and hollow cylinder axle is respectively equipped with seal arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97101664A CN1063531C (en) | 1997-02-24 | 1997-02-24 | New-type local blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97101664A CN1063531C (en) | 1997-02-24 | 1997-02-24 | New-type local blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1191943A CN1191943A (en) | 1998-09-02 |
| CN1063531C true CN1063531C (en) | 2001-03-21 |
Family
ID=5165895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97101664A Expired - Fee Related CN1063531C (en) | 1997-02-24 | 1997-02-24 | New-type local blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063531C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980076A (en) * | 2018-06-19 | 2018-12-11 | 深圳市明翔电器有限公司 | A kind of electric fan |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2954739A (en) * | 1956-01-03 | 1960-10-04 | Tait Mfg Co The | Pumps |
| US3273788A (en) * | 1965-01-11 | 1966-09-20 | Jr Charles Waddell Coward | Fan assemblies |
| GB1501473A (en) * | 1974-06-11 | 1978-02-15 | Charbonnages De France | Fans |
| US4443152A (en) * | 1977-10-03 | 1984-04-17 | Rockwell International Corporation | Axial slurry pump |
| CN1022505C (en) * | 1988-03-24 | 1993-10-20 | 皮埃尔·卡卢塞特 | Non-variable rotating machinery |
-
1997
- 1997-02-24 CN CN97101664A patent/CN1063531C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2954739A (en) * | 1956-01-03 | 1960-10-04 | Tait Mfg Co The | Pumps |
| US3273788A (en) * | 1965-01-11 | 1966-09-20 | Jr Charles Waddell Coward | Fan assemblies |
| GB1501473A (en) * | 1974-06-11 | 1978-02-15 | Charbonnages De France | Fans |
| US4443152A (en) * | 1977-10-03 | 1984-04-17 | Rockwell International Corporation | Axial slurry pump |
| CN1022505C (en) * | 1988-03-24 | 1993-10-20 | 皮埃尔·卡卢塞特 | Non-variable rotating machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1191943A (en) | 1998-09-02 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |