CN201461470U - Explosion-proof type pressing type disrotatory axial flow local ventilator for mine - Google Patents

Explosion-proof type pressing type disrotatory axial flow local ventilator for mine Download PDF

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Publication number
CN201461470U
CN201461470U CN2009201004254U CN200920100425U CN201461470U CN 201461470 U CN201461470 U CN 201461470U CN 2009201004254 U CN2009201004254 U CN 2009201004254U CN 200920100425 U CN200920100425 U CN 200920100425U CN 201461470 U CN201461470 U CN 201461470U
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China
Prior art keywords
level
air channel
impeller
grade
motor
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Expired - Fee Related
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CN2009201004254U
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Chinese (zh)
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不公告发明人
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HARBIN HANGFEI INDUSTRY MACHINERY Co Ltd
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HARBIN HANGFEI INDUSTRY MACHINERY Co Ltd
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Abstract

The utility model relates to an explosion-proof type pressing type disrotatory axial flow local ventilator for a mine and existing local ventilators for mines have the defect of high noise low wind pressure, and the like. The combination of the product comprises an inlet current collector (1), wherein the inlet current collector is connected with a first-grade air channel (2), a first-grade motor (4) is installed in the first-grade air channel, a first-grade impeller (6) is installed in a first-grade main air channel connected with the first-grade air channel, a second-grade impeller (6) is installed in a second-grade main air channel connected with the first-grade main air channel (5), the second-grade main air channel (6) is connected with a second-grade air channel (9), a second-grade motor (11) is installed in the second-grade air channel, the second air channel is connected with a decollator (11), and noise reduction layers are arranged outside the inlet current collector, the first-grade air channel, the first-grade main air channel, the second-grade main air channel, the second-grade air channel and the decollator.

Description

Flame-proof mine is forced to the axial flow rotary booster
Technical field:
It is forced to the axial flow rotary booster that the utility model relates to a kind of flame-proof mine.
Background technique:
Under the coal mine that harmful gases such as methane, carbon monoxide are arranged, need to install booster usually, at the diffuser outlet end flexible conduit (length on demand) is housed, do forced ventilation,, upgrade mine gas effectively with the supporting use of malleation main fan.Prevent the blast that exceeds standard and cause because of methane, guarantee personnel in the pit's safety.
Existing booster has the following disadvantages:
1. curl up in order to overcome air-flow, stator or fluid director are housed make the body axial growth, increased manufacture difficulty simultaneously.2. the blade shape of existing ventilator has single flat, single circular arc board-like etc., and air quantity is little, blast is low, and performance obviously reduces.3. the mutual superposition of existing ventilator both stage impellers gas makes that the work of front and back stages impeller is not steady.4. the noise of existing ventilator is generally bigger.
Summary of the invention:
It is forced to the axial flow rotary booster that the purpose of this utility model provides a kind of flame-proof mine, can effectively reduce the noise of ventilator, improves air quantity, the blast of ventilator.
Above-mentioned purpose realizes by following technological scheme:
Flame-proof mine is forced to the axial flow rotary booster, its composition comprises: the import slip ring, described import slip ring connects the one-level air channel, the one-level motor is installed in the described one-level air channel, the one-level impeller is installed in the one-level main wind passage that described one-level air channel connects, sencond stage impeller is installed in the secondary main wind passage that described one-level main wind passage connects, described secondary main wind passage connects the secondary air channel, the secondary motor is installed in the described secondary air channel, described secondary air channel connects diffuser, described import slip ring, the one-level air channel, the one-level main wind passage, the secondary main wind passage, the secondary air channel, diffuser has the noise reduction layer outward.
Described flame-proof mine is forced to the axial flow rotary booster, described one-level motor and described secondary motor are that axle is installed, described one-level impeller is the clockwise direction rotation, described sencond stage impeller is rotation counterclockwise, described one-level impeller and described sencond stage impeller all adopt hollow wing blade structure blade, the blade of described one-level impeller and the lobe numbers of described sencond stage impeller each other prime number and described one-level impeller blade number more than described sencond stage impeller lobe numbers.
Described flame-proof mine is forced to the axial flow rotary booster, the internal face in described one-level air channel/secondary air channel and the radial clearance between described one-level impeller/sencond stage impeller are 1.3 ‰~3.5 ‰ of described one-level impeller/sencond stage impeller diameter, and be not less than 1mm, one-level motor cylinder base (3) is installed in the described one-level air channel, the one-level motor is installed in the described one-level motor cylinder base, secondary motor cylinder base (10) is installed in the described secondary air channel, the secondary motor is installed in the described secondary motor cylinder base.
Beneficial effect:
1. strict aerodynamic analysis program is adopted in the utility model design, runner and blade profile have been carried out the three-dimensional artificial design analysis. adopt airplane engine gas compressor supercharging principle step by step, design the ventilator overall structure. with each parts frame and slip ring rectification body, the motor cylinder base, wheel hubs etc. have been formed ventilator must smooth air flow channel, improved blower performance, avoided motor is exposed in runner, cause windage big, flow reduces, total pressure efficiency is low, drawbacks such as noise is big. at described import slip ring, the one-level air channel, the one-level main wind passage, the secondary main wind passage, the secondary air channel, diffuser has the noise reduction layer outward, effectively reduces noise.
2. traditional ventilator curls up in order to overcome air-flow, stator or fluid director is housed makes the body axial growth, has increased manufacture difficulty bilobed wheel of the present utility model simultaneously to revolving structure, is installed by two motor subtends, and impeller and its are installed for straight connection type.During work, the one-level impeller turns clockwise, and sencond stage impeller is rotated counterclockwise.Air-flow is during through the one-level impeller, because the effect of blade makes it obtain energy, produces blast simultaneously and air-flow curls up.When the sencond stage impeller, obtained bigger energy again, produce bigger blast, and corrected air-flow and curl up, air-flow is flowed out vertically.This just overcomes some shortcomings of the tradition ventilation machine that has fallen to be equipped with stator or fluid director form.
3. the utility model blade profile is designed to wing blade, and the performance that this has improved ventilator has greatly improved air quantity, blast, has reduced noise.Other like product blade pattern has single flat, single circular arc board-like etc., and performance obviously reduces.
4. the utility model has been determined two-stage lobe numbers prime number each other.One-level impeller blade number has effectively been avoided the mutual superposition of both stage impellers gas more than the sencond stage impeller number of blade, has guaranteed that the front and back stages impeller can coordinate, work reposefully.
5. the noise reduction layer outside the utility model reasonably, effectively makes its noise figure far below the national departments concerned specified standard.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
Accompanying drawing 2 is structural representations of import slip ring in the utility model.
Accompanying drawing 3 is left views of accompanying drawing 2.
Accompanying drawing 4 is the structural representations in one-level air channel in the utility model.
Accompanying drawing 5 is left views of accompanying drawing 4.
Accompanying drawing 6 is structural representations of diffuser in the utility model.
Accompanying drawing 7 is left views of accompanying drawing 6.
Accompanying drawing 8 is structural representations of one-level main wind passage in the utility model.
Accompanying drawing 9 is plan views of accompanying drawing 8.
Accompanying drawing 10 is structural representations of wing blades in the utility model.
Accompanying drawing 11 is A-A sectional drawings of accompanying drawing 10.
Embodiment:
Embodiment 1:
Flame-proof mine is forced to the axial flow rotary booster, its composition comprises: import slip ring 1, have the smooth passage that bell-mouthed cylindrical outer casing and rectification body form a convergent by front end, entering between wheel hub and the casing with being beneficial to airflow smooth. described import slip ring is connected one-level air channel 2, one-level motor cylinder base 3 is installed in the described one-level air channel, one-level motor 4 is installed in the described one-level motor cylinder base, air channel inwall and motor cylinder base outer wall, and wheel hub forms an air-flow path. be provided with the motor cylinder base, because cylindrical shell is basic and the air channel shell is isometric, this has just formed a smooth air-flow path, this is to guaranteeing suitable flow parameter, to guaranteeing the air quantity of blower fan, blast is significant. described one-level air channel connects one-level main wind passage 5, one-level impeller 6 is installed in the described one-level main wind passage, described one-level main wind passage connects secondary main wind passage 7, sencond stage impeller 8 is installed in the described secondary main wind passage, described secondary main wind passage connects secondary air channel 9, secondary motor cylinder base 10 is installed in the described secondary air channel, secondary motor 11 is installed in the described secondary motor cylinder base, described secondary air channel connects diffuser 12, diffuser mainly is made up of shell and internal cones. and diffuser can transform the part kinetic energy of air-flow, improving the total pressure efficiency of ventilator. the diffuser of this series ventilator has adopted noise-reducing structure, therefore also possesses silencing function. described import slip ring, the one-level air channel, the one-level main wind passage, the secondary main wind passage, the secondary air channel, diffuser has noise reduction layer 13. outward
Described flame-proof mine is forced to the axial flow rotary booster, described one-level motor and described secondary motor are that axle is installed, described one-level impeller is the clockwise direction rotation, described sencond stage impeller is rotation counterclockwise, because rotation, the air-flow of impeller are entered by the import slip ring.When air-flow process one-level impeller, under the effect of blade, air-flow is accelerated, distortion fast, and generation is curled up, and obtains energy.When air-flow during through sencond stage impeller, air-flow curls up then to be eliminated by the counter-rotating of sencond stage impeller, and with the air-flow discharge of boosting.Directly produce the axial flow that meets the ventilator export requirement.Both stage impellers is stator each other, then establishes guide vane no longer in addition.Make axial dimension simple in structure, compact, as to have shortened complete machine.Described one-level impeller and described sencond stage impeller all adopt hollow wing blade structure blade, the blade of described one-level impeller and the lobe numbers of described sencond stage impeller each other prime number and described one-level impeller blade number more than described sencond stage impeller lobe numbers.And make selected number satisfy 0.5<t/b<1.5 (t pitch, b vane airfoil profile chord length) like this, to have avoided the mutual superposition of both stage impellers gas, guarantee that the front and back stages impeller can coordinate, work reposefully.
Described flame-proof mine is forced to the axial flow rotary booster, the internal face in described one-level air channel/secondary air channel and the radial clearance between described one-level impeller/sencond stage impeller are 1.3 ‰~3.5 ‰ of described one-level impeller/sencond stage impeller diameter, and can not be less than 1mm.Impeller is the critical component of ventilator, and its effect is that mechanical energy is passed to the gas that is transferred.Impeller mainly is made up of wheel hub and blade, and wheel hub mainly is made up of outer wheel hub, disc and inner wheel hub, and outer wheel hub is a cartridge type spare, and the passage with casing formation gas links to each other with inner wheel hub through disc, and the hole that links to each other with motor shaft is arranged on the inner wheel hub.Wheel hub when total pressure efficiency is the highest as calculated and impeller ratio, i.e. hub ratio d ≈ 0.6.Blade is the core of ventilator technology, and the shape of blade, the size of established angle are directly connected to the performance of ventilator.Blade is made up of leaf basin, blade back, leaf top.Blade is the unique parts that transmit energy in the ventilator to air-flow, and blade angle can change the air quantity and the blast of ventilator, promptly can change the operating mode of ventilator.

Claims (3)

1. a flame-proof mine is forced to the axial flow rotary booster, its composition comprises: the import slip ring, it is characterized in that: described import slip ring connects the one-level air channel, the one-level motor is installed in the described one-level air channel, the one-level impeller is installed in the one-level main wind passage that described one-level air channel connects, sencond stage impeller is installed in the secondary main wind passage that described one-level main wind passage connects, described secondary main wind passage connects the secondary air channel, the secondary motor is installed in the described secondary air channel, described secondary air channel connects diffuser, described import slip ring, the one-level air channel, the one-level main wind passage, the secondary main wind passage, the secondary air channel, diffuser has the noise reduction layer outward.
2. flame-proof mine according to claim 1 is forced to the axial flow rotary booster, it is characterized in that: described one-level motor and described secondary motor are for to install axle, described one-level impeller is the clockwise direction rotation, described sencond stage impeller is rotation counterclockwise, described one-level impeller and described sencond stage impeller all adopt hollow wing blade structure blade, the blade of described one-level impeller and the lobe numbers of described sencond stage impeller each other prime number and described one-level impeller blade number more than described sencond stage impeller lobe numbers.
3. flame-proof mine according to claim 1 and 2 is forced to the axial flow rotary booster, it is characterized in that: the internal face in described one-level air channel/secondary air channel and the radial clearance between described one-level impeller/sencond stage impeller are 1.3 ‰~3.5 ‰ of described one-level impeller/sencond stage impeller diameter, and be not less than 1mm, one-level motor cylinder base (3) is installed in the described one-level air channel, the one-level motor is installed in the described one-level motor cylinder base, secondary motor cylinder base (10) is installed in the described secondary air channel, the secondary motor is installed in the described secondary motor cylinder base.
CN2009201004254U 2009-07-22 2009-07-22 Explosion-proof type pressing type disrotatory axial flow local ventilator for mine Expired - Fee Related CN201461470U (en)

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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206393A (en) * 2013-05-06 2013-07-17 淮北兴海工贸有限责任公司 Mining flame-proof type third-level axial flow disrotatory local fan
CN103591055A (en) * 2013-11-29 2014-02-19 南阳防爆集团股份有限公司 Cooling and fretting wear preventing structure of counter-rotating local ventilator bearing
CN103758784A (en) * 2013-12-31 2014-04-30 西安交通大学 Hub casing contra-rotating type multi-stage axial flow fan
CN105201922A (en) * 2015-09-28 2015-12-30 无锡市南方防爆电机有限公司 Explosion-proof fan capable of effectively reducing noise
CN108443192A (en) * 2018-05-29 2018-08-24 株洲联诚集团控股股份有限公司 A kind of mining explosion-proof type counter-rotating axial fan
CN110259731A (en) * 2019-07-23 2019-09-20 山西省侯马市鑫丰康风机有限公司 A method of reducing constructing tunnel propeller fan noise
CN111963461A (en) * 2020-08-12 2020-11-20 西安陕鼓动力股份有限公司 Novel disrotatory fan

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103206393A (en) * 2013-05-06 2013-07-17 淮北兴海工贸有限责任公司 Mining flame-proof type third-level axial flow disrotatory local fan
CN103206393B (en) * 2013-05-06 2015-05-06 淮北兴海工贸有限责任公司 Mining flame-proof type third-level axial flow disrotatory local fan
CN103591055A (en) * 2013-11-29 2014-02-19 南阳防爆集团股份有限公司 Cooling and fretting wear preventing structure of counter-rotating local ventilator bearing
CN103591055B (en) * 2013-11-29 2016-02-17 南阳防爆集团股份有限公司 A kind of to revolving the cooling of local ventilation machine bearing and anti-fretting wear structure
CN103758784A (en) * 2013-12-31 2014-04-30 西安交通大学 Hub casing contra-rotating type multi-stage axial flow fan
CN105201922A (en) * 2015-09-28 2015-12-30 无锡市南方防爆电机有限公司 Explosion-proof fan capable of effectively reducing noise
CN108443192A (en) * 2018-05-29 2018-08-24 株洲联诚集团控股股份有限公司 A kind of mining explosion-proof type counter-rotating axial fan
CN108443192B (en) * 2018-05-29 2024-03-12 株洲联诚集团控股股份有限公司 Explosion-proof disrotatory axial flow fan for mine
CN110259731A (en) * 2019-07-23 2019-09-20 山西省侯马市鑫丰康风机有限公司 A method of reducing constructing tunnel propeller fan noise
CN111963461A (en) * 2020-08-12 2020-11-20 西安陕鼓动力股份有限公司 Novel disrotatory fan

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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: 20100512

Termination date: 20140722

EXPY Termination of patent right or utility model