CN103423211A - Mine pressure fan silencer - Google Patents
Mine pressure fan silencer Download PDFInfo
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- CN103423211A CN103423211A CN2013103838393A CN201310383839A CN103423211A CN 103423211 A CN103423211 A CN 103423211A CN 2013103838393 A CN2013103838393 A CN 2013103838393A CN 201310383839 A CN201310383839 A CN 201310383839A CN 103423211 A CN103423211 A CN 103423211A
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- wall
- bloop
- baffler
- grooves
- barrel
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Abstract
The invention discloses a mine pressure fan silencer, which is characterized in that the inner wall of a cylinder wall of the silencer is provided with a plurality of inner wall grooves according to the rifle form, the outer wall of a silencing cone is provided with a plurality of outer wall grooves according to the rifle form, the inner wall grooves of the cylinder wall of the silencer and the outer wall grooves of the silencing cone are consistent in rotating direction, inner wall silencing holes are formed in the cylinder wall of two adjacent inner wall grooves, outer wall silencing holes are formed in the cone wall between two adjacent outer wall grooves, the track of the connecting line of circle centers of the inner wall silencing holes is in parallel with the track of the inner wall grooves, the track of the connecting line of circle centers of the outer wall silencing holes is in parallel with the track of the outer wall grooves, the adjacent inner wall silencing holes in the inner wall of the cylinder wall of the silencer in the circumferential direction are arrayed according to the manner that diameters are gradually reduced or diameters are gradually increased in one cycle, and the adjacent outer wall silencing holes in the outer wall of the silencing cone of the silencer in the circumferential direction are arrayed according to the manner that diameters are gradually reduced or diameters are gradually increased in one cycle. The mine pressure fan silencer can be used for reducing the noise generated when a pressure fan works, and meeting the high requirements of supplied wind flow, supplied wind quantity and supplied wind pressure.
Description
Technical field
The present invention relates to a kind of mining blower silencer, belong to the silencer technical field.
Background technique
Pressure fan is requisite equipment under coal mine, for delivery of fresh distinguished and admirable, supply personnel's breathing, apparatus cools, dilution gas, takes away dust, environment temperature reduction etc.Pressure fan has the characteristics such as volume is large, power is high, continuous operation, can produce very large noise during normal operation, simultaneously due to the conditions down-hole restriction, in order to save space, the air feed system of the composition such as pressure fan and baffler generally all is arranged on the position on one lateral deviation of tunnel, causes thus airspeed difference, the generation gas current friction noise of air feed system at the intake grill place.So near the personnel that work pressure fan for a long time can be subject to noise pollution, the seriousness of its harm is well-known.In order to reduce the harm of pressure fan noise, numerous scholars and scientific and technical personnel have done a lot of work around the baffler noise reduction, as add noise reduction cone, on the baffler barrel, open bloop etc., as publication number is a kind of mining blower silencers of 101435441 disclosed Chinese patents (patent No. is 200810244455.2), be equipped with several right-hand helix of inner core along described two bafflers directions on the inner core inwall of air intake afflux baffler and air-out baffler and along the axial direction of described two bafflers inwall bloop of cycle arrangement by size; Be equipped with several on the outer wall of water conservancy diversion noise reduction cone and diffusion noise reduction cone along outer wall left hand screw line directions of described two noise reductions cone and along described two noise reduction axis of cone line directions outer wall bloop of cycle arrangement by size, this patent is arranged bloop, but, because the helix rotation direction on baffler inwall and noise reduction cone outer wall is contrary, cause that distinguished and admirable resistance is large, the airflow pressure loss is larger.
In addition, current mine pressure fan air feed distance is more and more longer, the longest 7km that reaches, and the long pressure fan apart from air feed requires all higher to distinguished and admirable, air quantity and blast.Therefore, invent and a kind ofly can meet distinguished and admirable, air quantity and blast requirement, the baffler that the noise of pressure fan can be dropped to again to reduced levels becomes one of key issue that current urgent need solves.
Summary of the invention
The problem existed for above-mentioned prior art, the invention provides a kind of mining blower silencer, and the noise in the time of reducing pressure fan work can also meet that air feed is distinguished and admirable simultaneously, the high request of air quantity and blast.
To achieve these goals, the technical solution used in the present invention is: a kind of mining blower silencer, comprise baffler barrel and noise reduction cone, the noise reduction cone is fixed on baffler inside by link press span, baffler barrel inside is filled with quieter material, offer respectively inwall bloop and the outer wall bloop distributed along helix direction on baffler barrel inwall and noise reduction cone outer wall, inwall bloop on the same helix or outer wall bloop successively decrease gradually according to diameter in one-period or the form increased progressively gradually arrangement is offered, form according to rifle on baffler barrel inwall and noise reduction cone outer wall has many inboard wall grooves and unit with grooves in outer wall, the inboard wall groove of baffler barrel is consistent with the unit with grooves in outer wall rotation direction of noise reduction cone, the inwall bloop is opened on the barrel between adjacent two inboard wall grooves, the outer wall bloop is opened on the cone wall between adjacent two unit with grooves in outer walls, the track of inwall bloop circle center line connecting and the track of inboard wall groove are parallel, the track of outer wall bloop circle center line connecting and the track of unit with grooves in outer wall are parallel, on baffler barrel inwall circumferential direction in one-period the diameter of adjacent inner wall bloop successively decrease gradually or increasing progressively gradually to arrange offers, on noise reduction cone outer wall circumferential direction in one-period the diameter of adjacent outer wall bloop successively decrease gradually or increasing progressively gradually to arrange offers.
Further, on baffler barrel inwall and noise reduction cone outer wall except inboard wall groove and unit with grooves in outer wall surface remaining part all be equipped with Air Filter.
Further, baffler barrel inside is provided with supporting frame.
Compared with prior art: on baffler barrel inwall of the present invention and noise reduction cone outer wall, according to the rifle form, offer many grooves, bloop is opened on the barrel between adjacent two grooves, the alternate effect of offering of groove and bloop is the air-flow that can merge inlet's friction speed, reduce the friction noise that the friction speed air-flow produces, coordinating the effect of bloop, it is more obvious that low noise effect is fallen, can make again flow spiral advance, increased blast, improved wind speed, air-flow now just can reduce the relative velocity of blade cuts air-flow through the pressure fan blade time, groove on baffler barrel inwall is consistent with the groove rotation direction on noise reduction cone outer wall, has reduced, by the relative friction between both air-flows, to fall low noise air-flow, air quantity and the blast of simultaneously having increased.
The accompanying drawing explanation
Fig. 1 is sectional view of the present invention;
Fig. 2 is that noise reduction cone groove of the present invention is offered schematic diagram;
Fig. 3 is that baffler barrel groove of the present invention and bloop are offered structural representation;
Fig. 4 is support frame structure schematic diagram of the present invention;
Fig. 5 is the A section enlarged view in Fig. 1.
In figure: 1, baffler barrel, 2, noise reduction cone, 3, link press span, 4-1, inboard wall groove, 4-2, unit with grooves in outer wall, 5-1, inwall bloop, 5-2, outer wall bloop, 6, supporting frame, 7, quieter material, 8, Air Filter.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1 to Figure 3, this mining blower silencer, comprise baffler barrel 1 and noise reduction cone 2, noise reduction cone 2 is fixed on baffler inside by link press span 3, baffler barrel 1 inside is filled with quieter material 7, baffler barrel 1 inwall and noise reduction are bored on 2 outer walls and are offered bloop 5, baffler barrel 1 inwall and noise reduction are bored on 2 outer walls and are offered respectively inwall bloop 5-1 and the outer wall bloop 5-2 distributed along helix direction, inwall bloop 5-1 on the same helix or outer wall bloop 5-2 successively decrease gradually according to diameter in one-period or the form increased progressively gradually arrangement is offered, baffler barrel 1 inwall and noise reduction are bored the form according to rifle on 2 outer walls and are had many inboard wall groove 4-1 and unit with grooves in outer wall 4-2, the inboard wall groove 4-1 of baffler barrel 1 is consistent with the unit with grooves in outer wall 4-2 rotation direction of noise reduction cone 2, bloop 5 is opened on the barrel of 4 of adjacent two grooves, inwall bloop 5-1 is opened on the barrel between adjacent two inboard wall groove 4-1, outer wall bloop 5-2 is opened on the cone wall between adjacent two unit with grooves in outer wall 4-2, groove and bloop are alternate to be offered, can merge the air-flow of baffler inlet friction speed, reduce the friction noise that the friction speed air-flow produces, can make again flow spiral advance, increased blast, improved wind speed, air-flow now just can reduce the relative velocity of blade cuts air-flow through the pressure fan blade time, blade cuts air-flow relative velocity reduces must reduce noise, coordinating the effect of bloop, it is more obvious that low noise effect is fallen, the inboard wall groove 4-1 of baffler barrel 1 is consistent with the unit with grooves in outer wall 4-2 rotation direction of noise reduction cone 2, make by both air-flow rotation directions also consistent, reduced by relative friction and resistance between both air-flows, fallen the low noise loss that has simultaneously reduced distinguished and admirable, air quantity and blast, reduce the loss of distinguished and admirable, air quantity and blast, just make in the situation that the air feed distance is identical and can use less pressure fan, the air feed distance is longer, and the pressure fan of few use is just more, has just reduced noise source with pressure fan less, also just reduces noise, the track of inwall bloop 5-1 circle center line connecting is parallel with the track of inboard wall groove 4-1, form the bloop line of a rifle form, according to actual conditions, between adjacent two inboard wall groove 4-1, such bloop line can offer many, in like manner, between adjacent two unit with grooves in outer wall 4-2, such bloop line can offer many, on baffler barrel 1 inwall circumferential direction in one-period the diameter of adjacent inner wall bloop 5-1 successively decrease gradually or increasing progressively gradually to arrange offers, be that inwall bloop 5-1 on baffler barrel 1 inwall circumferential direction is that Heterogeneous Permutation is offered, the length of one-period depends on that inwall bloop 5-1 diameter increases progressively or the difference of successively decreasing, difference is larger, cycle is shorter, difference is less, cycle is longer, the length in cycle can be selected to arrange according to the rank of pressure fan flexibly, to greatest extent the audible sound composition in noise spectrum is reduced, to reach best erasure effect, in like manner, to bore the distribution of the outer wall bloop 5-2 on 2 outer walls be also like this in noise reduction.
In view of Coal Mines dirt more, and coal dust has certain viscosity, thereby be easy to stop up bloop and affect erasure effect of the present invention, as shown in Figure 5, therefore baffler barrel 1 inwall and noise reduction are bored on 2 outer walls remaining part except inboard wall groove 4-1 and unit with grooves in outer wall 4-2 surface and all are equipped with Air Filter 8, on Air Filter 8, adhere to coal dust thickness effect during erasure effect of the present invention, only needing to change Air Filter 8 gets final product, simple and convenient, with low cost, if Air Filter 8 has covered inboard wall groove 4-1 and unit with grooves in outer wall 4-2, can affect the effect of rifle inboard wall groove 4-1 and unit with grooves in outer wall 4-2 greatly, so need not lay Air Filter 8 on groove surfaces.
Baffler barrel 1 inside is filled with quieter material 7, when pressure fan is worked, baffler can shake thereupon, in the course of time, the quieter material 7 of baffler barrel 1 inner and upper is just likely focused on the lower position of baffler barrel 1 inside by vibrations, thereby affect the effect of quieter material 7, for this reason, baffler barrel 1 inside is provided with supporting frame 6, as shown in Figure 4, quieter material 7 has had the supplemental support effect of supporting frame 6 will become firmly, is not easy to be shaken, and has improved erasure effect.
Claims (3)
1. a mining blower silencer, comprise baffler barrel (1) and noise reduction cone (2), noise reduction cone (2) is fixed on baffler inside by link press span (3), baffler barrel (1) inside is filled with quieter material (7), offer respectively inwall bloop (5-1) and the outer wall bloop (5-2) distributed along helix direction on baffler barrel (1) inwall and noise reduction cone (2) outer wall, inwall bloop (5-1) on the same helix or outer wall bloop (5-2) successively decrease gradually according to diameter in one-period or the form increased progressively gradually arrangement is offered, it is characterized in that, form according to rifle on baffler barrel (1) inwall and noise reduction cone (2) outer wall has many inboard wall grooves (4-1) and unit with grooves in outer wall (4-2), the inboard wall groove (4-1) of baffler barrel (1) is consistent with unit with grooves in outer wall (4-2) rotation direction of noise reduction cone (2), inwall bloop (5-1) is opened on the barrel between adjacent two inboard wall grooves (4-1), outer wall bloop (5-2) is opened on the cone wall between adjacent two unit with grooves in outer walls (4-2), the track of inwall bloop (5-1) circle center line connecting is parallel with the track of inboard wall groove (4-1), the track of outer wall bloop (5-2) circle center line connecting is parallel with the track of unit with grooves in outer wall (4-2), on baffler barrel (1) inwall circumferential direction in one-period the diameter of adjacent inner wall bloop (5-1) successively decrease gradually or increasing progressively gradually to arrange offers, on noise reduction cone (2) outer wall circumferential direction in one-period the diameter of adjacent outer wall bloop (5-2) successively decrease gradually or increasing progressively gradually to arrange offers.
2. a kind of mining blower silencer according to claim 1, it is characterized in that, on described baffler barrel (1) inwall and noise reduction cone (2) outer wall except inboard wall groove (4-1) and unit with grooves in outer wall (4-2) surperficial remaining part all be equipped with Air Filter (8).
3. a kind of mining blower silencer according to claim 2, is characterized in that, described baffler barrel (1) inside is provided with supporting frame (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383839.3A CN103423211B (en) | 2013-08-29 | 2013-08-29 | A kind of mining blower silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383839.3A CN103423211B (en) | 2013-08-29 | 2013-08-29 | A kind of mining blower silencer |
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| Publication Number | Publication Date |
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| CN103423211A true CN103423211A (en) | 2013-12-04 |
| CN103423211B CN103423211B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310383839.3A Active CN103423211B (en) | 2013-08-29 | 2013-08-29 | A kind of mining blower silencer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56143399A (en) * | 1980-04-09 | 1981-11-09 | Mitsubishi Electric Corp | Silencer for propeller fan |
| CN101871473A (en) * | 2010-06-09 | 2010-10-27 | 中国矿业大学 | Impedance composite muffler |
| CN101435441B (en) * | 2008-12-03 | 2011-05-11 | 中国矿业大学 | Mining blower silencer |
| CN202612215U (en) * | 2012-06-02 | 2012-12-19 | 山西巨龙风机有限公司 | Press-in type axial flow local ventilator side inlet wind noise-reducing sound-eliminating device used in coal mine downhole |
| CN203009405U (en) * | 2012-10-31 | 2013-06-19 | 溧阳市众星环保机械有限公司 | Muffler |
-
2013
- 2013-08-29 CN CN201310383839.3A patent/CN103423211B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56143399A (en) * | 1980-04-09 | 1981-11-09 | Mitsubishi Electric Corp | Silencer for propeller fan |
| CN101435441B (en) * | 2008-12-03 | 2011-05-11 | 中国矿业大学 | Mining blower silencer |
| CN101871473A (en) * | 2010-06-09 | 2010-10-27 | 中国矿业大学 | Impedance composite muffler |
| CN202612215U (en) * | 2012-06-02 | 2012-12-19 | 山西巨龙风机有限公司 | Press-in type axial flow local ventilator side inlet wind noise-reducing sound-eliminating device used in coal mine downhole |
| CN203009405U (en) * | 2012-10-31 | 2013-06-19 | 溧阳市众星环保机械有限公司 | Muffler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103423211B (en) | 2016-05-18 |
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