CN103423211B - A kind of mining blower silencer - Google Patents
A kind of mining blower silencer Download PDFInfo
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- CN103423211B CN103423211B CN201310383839.3A CN201310383839A CN103423211B CN 103423211 B CN103423211 B CN 103423211B CN 201310383839 A CN201310383839 A CN 201310383839A CN 103423211 B CN103423211 B CN 103423211B
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- wall
- bloop
- grooves
- inwall
- noise reduction
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- 238000005065 mining Methods 0.000 title claims abstract description 11
- 230000003584 silencer Effects 0.000 title claims abstract description 10
- 230000009467 reduction Effects 0.000 claims abstract description 38
- 230000007423 decrease Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 13
- 239000003245 coal Substances 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention discloses a kind of mining blower silencer, on muffler barrel inwall and noise reduction cone outer wall, has many inboard wall grooves and unit with grooves in outer wall according to the form of rifling, and the inboard wall groove of muffler barrel is consistent with the unit with grooves in outer wall rotation direction of noise reduction cone; Inwall bloop is opened on the barrel between adjacent two inboard wall grooves, 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, in muffler barrel inwall circumferential direction, in one-period, the diameter of adjacent inner wall bloop successively decreases or increasing progressively gradually to arrange offers gradually, and in noise reduction cone outer wall circumferential direction, in one-period, the diameter of adjacent outer wall bloop successively decreases or increasing progressively gradually to arrange offers gradually. The present invention can reduce the pressure fan noise in when work, can also meet that air feed is distinguished and admirable simultaneously, the high request of air quantity and blast.
Description
Technical field
The present invention relates to a kind of mining blower silencer, belong to silencing means technical field.
Background technology
Pressure fan is requisite equipment under coal mine, and for delivery of fresh distinguished and admirable, confession personnel breathe, equipment is cooling, dilute gas, take away dust, environment temperature reduction etc. Pressure fan has the features such as volume is large, power is high, continuous operation, when normal work, can produce very large noise, simultaneously due to conditions down-hole restriction, in order to save space, the air feed system of the composition such as pressure fan and muffler is generally all arranged on the position in one lateral deviation of tunnel, causes thus air velocity difference, the generation gas current friction noise of air feed system at air inlet 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 muffler noise reduction, as add noise reduction cone, on muffler barrel, open bloop etc., if publication number is a kind of mining blower silencers of 101435441 disclosed Chinese patents (patent No. is 200810244455.2), on the inner core inwall of air intake afflux muffler and air-out muffler, be equipped with several along the inner core right-hand helix direction of described two mufflers and along the axis direction inwall bloop of cycle arrangement by size of described two mufflers; On the outer wall of water conservancy diversion noise reduction cone and diffusion noise reduction cone, be equipped with several along the outer wall left-hand screw line direction of described two noise reductions cone and along described two noise reductions cone axis direction outer wall bloop of cycle arrangement by size, this patent is arranged bloop, but because the helix rotation direction on muffler inwall and noise reduction cone outer wall is contrary, cause that distinguished and admirable resistance is large, 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, that invention one can meet is distinguished and admirable, air quantity and blast requirement, and the muffler 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 existing for above-mentioned prior art, the invention provides a kind of mining blower silencer, and the noise can reduce pressure fan work time 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 muffler barrel and noise reduction cone, noise reduction cone is fixed on muffler inside by link, muffler barrel inside is filled with quieter material, on muffler barrel inwall, offer the inwall bloop distributing along hand of helix, on noise reduction cone outer wall, offer the outer wall bloop distributing along hand of helix, inwall bloop on same helix or outer wall bloop successively decrease gradually according to diameter in one-period or the form increasing progressively gradually arrangement is offered, on muffler barrel inwall, have many inboard wall grooves according to the form of rifling, on noise reduction cone outer wall, have many unit with grooves in outer walls according to the form of rifling, the inboard wall groove of muffler barrel is consistent with the unit with grooves in outer wall rotation direction of noise reduction cone, inwall bloop is opened on the barrel between adjacent two inboard wall grooves, 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, in muffler barrel inwall circumferential direction, in one-period, the diameter of adjacent inner wall bloop successively decreases or increasing progressively gradually to arrange offers gradually, and in noise reduction cone outer wall circumferential direction, in one-period, the diameter of adjacent outer wall bloop successively decreases or increasing progressively gradually to arrange offers gradually.
Further, on muffler barrel inwall and noise reduction cone outer wall, except inboard wall groove and unit with grooves in outer wall surface, remainder is all equipped with Air Filter.
Further, muffler barrel inside is provided with bracing frame.
Compared with prior art: on muffler barrel inwall of the present invention and noise reduction cone outer wall, offer many grooves according to rifling form, 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 import department's friction speed, reduce the friction noise that 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, increase blast, improve wind speed, air-flow now just can reduce the relative velocity of blade cuts air-flow when through pressure fan blade, groove on muffler 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.
Brief description of the drawings
Fig. 1 is cutaway 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 muffler 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 portion enlarged drawing in Fig. 1.
In figure: 1, muffler barrel, 2, noise reduction cone, 3, link, 4-1, inboard wall groove, 4-2, unit with grooves in outer wall, 5-1, inwall bloop, 5-2, outer wall bloop, 6, bracing frame, 7, quieter material, 8, Air Filter.
Detailed description of the invention
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 muffler barrel 1 and noise reduction cone 2, noise reduction cone 2 is fixed on muffler inside by link 3, muffler barrel 1 inside is filled with quieter material 7, muffler barrel 1 inwall and noise reduction are bored and on 2 outer walls, are offered bloop 5, muffler barrel 1 inwall and noise reduction are bored on 2 outer walls and are offered respectively along inwall bloop 5-1 and the outer wall bloop 5-2 of hand of helix distribution, inwall bloop 5-1 on same helix or outer wall bloop 5-2 successively decrease gradually according to diameter in one-period or the form increasing progressively gradually arrangement is offered, muffler barrel 1 inwall and noise reduction are bored the form according to rifling 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 muffler 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 muffler import department friction speed, reduce the friction noise that friction speed air-flow produces, can make again flow spiral advance, increase blast, improve wind speed, air-flow now just can reduce the relative velocity of blade cuts air-flow when through pressure fan blade, 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 muffler 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, reduce 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 can use less pressure fan in the situation that air feed distance is identical, air feed distance is longer, and the pressure fan of few use is just more, has just reduced noise source less with pressure fan, 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 rifling 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, in muffler barrel 1 inwall circumferential direction in one-period the diameter of adjacent inner wall bloop 5-1 successively decrease gradually or increase progressively gradually arrange offer, be that inwall bloop 5-1 in muffler 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 muffler barrel 1 inwall and noise reduction are bored on 2 outer walls remainder except inboard wall groove 4-1 and unit with grooves in outer wall 4-2 surface and are all equipped with Air Filter 8, when on Air Filter 8, adhere to coal dust thickness effect when erasure effect of the present invention, only need to change Air Filter 8, 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 rifling inboard wall groove 4-1 and unit with grooves in outer wall 4-2 greatly, so need not lay Air Filter 8 in groove surfaces.
Muffler barrel 1 inside is filled with quieter material 7, in the time that pressure fan is worked, muffler can shake thereupon, in the course of time, the quieter material 7 of muffler barrel 1 inner and upper is just likely focused on the lower position of muffler barrel 1 inside by vibrations, thereby affect the effect of quieter material 7, for this reason, muffler barrel 1 inside is provided with bracing frame 6, as shown in Figure 4, quieter material 7 has had the supplemental support effect of bracing frame 6 will become firmly, is not easy to be shaken off, and has improved erasure effect.
Claims (3)
1. a mining blower silencer, comprise muffler barrel (1) and noise reduction cone (2), noise reduction cone (2) is fixed on muffler inside by link (3), muffler barrel (1) inside is filled with quieter material (7), on muffler barrel (1) inwall, offer the inwall bloop (5-1) distributing along hand of helix, on noise reduction cone (2) outer wall, offer the outer wall bloop (5-2) distributing along hand of helix, inwall bloop (5-1) on same helix or outer wall bloop (5-2) successively decrease gradually according to diameter in one-period or the form increasing progressively gradually arrangement is offered, it is characterized in that, on muffler barrel (1) inwall, have many inboard wall grooves (4-1) according to the form of rifling, on noise reduction cone (2) outer wall, have many unit with grooves in outer walls (4-2) according to the form of rifling, the inboard wall groove (4-1) of muffler 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), in muffler barrel (1) inwall circumferential direction in one-period the diameter of adjacent inner wall bloop (5-1) successively decrease gradually or increase progressively gradually arrange offer, in noise reduction cone (2) outer wall circumferential direction, in one-period, the diameter of adjacent outer wall bloop (5-2) successively decreases or increasing progressively gradually to arrange offers gradually.
2. a kind of mining blower silencer according to claim 1, it is characterized in that, on described muffler 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) surface, remainder is all equipped with Air Filter (8).
3. a kind of mining blower silencer according to claim 2, is characterized in that, described muffler barrel (1) inside is provided with bracing 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 |
|---|---|
| CN103423211A CN103423211A (en) | 2013-12-04 |
| CN103423211B true 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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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56143399A (en) * | 1980-04-09 | 1981-11-09 | Mitsubishi Electric Corp | Silencer for propeller fan |
-
2013
- 2013-08-29 CN CN201310383839.3A patent/CN103423211B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103423211A (en) | 2013-12-04 |
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