CN201202487Y - Dust removing noise reducer of mining ventilation shaft air exit - Google Patents
Dust removing noise reducer of mining ventilation shaft air exit Download PDFInfo
- Publication number
- CN201202487Y CN201202487Y CNU2008200529833U CN200820052983U CN201202487Y CN 201202487 Y CN201202487 Y CN 201202487Y CN U2008200529833 U CNU2008200529833 U CN U2008200529833U CN 200820052983 U CN200820052983 U CN 200820052983U CN 201202487 Y CN201202487 Y CN 201202487Y
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- sound absorption
- dust
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- sound
- side plate
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Abstract
The utility model relates to a dust-removal and noise-reduction device used at an exhaust port of a mine ventilation shaft, belonging to the technical field of mining environmental protection devices. In order to solve the disadvantages that the prior art can not combine the dust-removal function with the noise-reduction function in one and has bad impact on the fan performances and also has large power consumption, the utility model provides a technical proposal as follows: in the device, a sound absorption partition board is arranged on an exhaust duct partition wall between air shafts; the upper end of the sound absorption partition board is connected with a sound absorption roof plate; a sound absorption side plate is connected at the circumferential edge of the sound absorption roof plate; the sound absorption side plate is shorter than the sound absorption partition board; a shutter-shaped guide vane with a downward-sloping outlet is arranged between the sound absorption side plate and the outer wall of the exhaust duct; outer wallboards are arranged around the outer wall of the exhaust duct; guiding plates are connected on the upper ends around each outer wallboard; and the width of each guiding plate is less than the width of the spacing between the outer wallboards and the outer wall of the exhaust duct. The utility model does not occupy the main air duct and is simple in structure and convenient in construction, which can reduce the fan running noise, remove the dust in the airflow and purify the air flow at an air outlet.
Description
Technical field
The utility model belongs to mining environmental protecting device technical field, is specifically related to a kind of dedusting denoising device of mining ventilating shaft air outlet.
Technical background
At present, China's coal-mine adopts the draft type of central block form mostly, promotes main shaft double as returnairshaft.Yet the lifting means in the main shaft has a large amount of dust to be dispersed into pit shaft and following current in wind cave distinguished and admirable in the process of loading and unloading coal, is dispersed on the surface plant ground by retention tower; Simultaneously, because the blower fan exhaust passage is short, retention tower air outlet wind speed height, diffusing opening still has bigger noise, and through on-site measurement, retention tower outlet noise usually reaches more than the 95dB (A), therefore, has caused certain dust air pollution and noise circumstance to pollute.
At present, the industrial dedusting method mainly contains both at home and abroad: (1) adopts the cleaner dedusting, as cyclone dust collectors, sack cleaner, water dust scrubber, electrostatic precipitator etc.Because mine blast volume is big, the dust concentration height have volatile methane gas to exist simultaneously, so the said equipment is not suitable for using in ventilating shaft.(2) gravitational dust collection, promptly rely on the gravitational settling effect of dust and make the dedusting technology of dust and flow separation, but the air-flow in the expansion chamber in this dedusting technology generally is laminar condition, the sedimentation indoor air velocity is low, therefore, need to build expansion chamber, in the coal mine ground air channel, also be difficult for realizing than large space.(3) inertial dust collection; as cyclone dust collectors; need to change distinguished and admirable flow direction; make dust obtain inertia and from distinguished and admirable, separate; owing to will make dust granules obtain bigger kinetic energy; need to improve distinguished and admirable speed, therefore independent inertial dust collection need consume bigger blower fan energy, and ventilation system is had bigger harmful effect.(4) atomizing de-dusting, promptly suitable position is provided with atomization mechanism in the air channel, water smoke is combined with dust and separates from air-flow, this method need consume a large amount of water, simultaneously, a grade water plate need be set, and the local resistance of shelves water plate is bigger, need consume the blower fan energy again.In addition, administering aspect the mine noise both at home and abroad, the main method that adopts sound absorption and sound insulation increase acoustical board or acoustic wall absorbs sound in retention tower as some mines, but this also can only reduce noise, and can not remove the dust in the air-flow.
Summary of the invention
The purpose of this utility model is at above shortcomings in the prior art, according to present China's coal-mine ventilation system characteristics, under the prerequisite that mine main does not impact ventilation system, provide a kind of dedusting denoising device that integrates the mining ventilating shaft air outlet of dedusting noise reduction.
The utility model is to realize above-mentioned purpose by the following technical solutions: the dedusting denoising device of this is mining ventilating shaft air outlet, be installed on ventilating shaft exhast duct top and around, promptly on the exhast duct partition wall between the ventilating shaft, be provided with sound-absorbing partition perpendicular to ground line, the upper end of sound-absorbing partition is connected with the suitable sound absorption top board of area that is parallel to horizontal plane and its area and air outlet, the sound absorption roof perimeter is connected with the sound absorption side plate perpendicular to ground line, the sound absorption side plate is shorter than sound-absorbing partition, is provided with the flow deflector of the downward-sloping blind shaped of outlet between sound absorption side plate and the exhast duct exterior wall; Be provided with around the exhast duct exterior wall and have a determining deviation with it and perpendicular to the side fascia of ground line, the upper end is connected with the deflector that is parallel to horizontal plane around the side fascia, the width of deflector is less than the spacing width between side fascia and the exhast duct exterior wall.Described sound-absorbing partition, sound absorption top board and sound absorption side plate all adopt efficient sound absorption material to make.
Since be provided with at the ventilating shaft air outlet above-mentioned by sound-absorbing partition, sound absorption top board, sound absorption side plate and the formed diversion tower of flow deflector, so the air-flow that comes out of ventilating shaft air outlet at first in diversion tower by the perisporium sound absorption reduction of adopting sound absorption material to make; The downward side flow of the air-flow that the guiding of diversion tower prerotation vane makes progress original air outlet, make acquire change inertia after the direction of dust in the air-flow, and diversion tower is provided with side fascia outward, make dust granules with the oblique impact side fascia of air-flow, thereby change the direction of motion of grit again, make dust continue downward lateral movement; Simultaneously, after air-flow came out to change direction impact side fascia from air outlet, along continuous straight runs flowed, it is big that the air current flow space becomes, and speed reduces, and movement of dust particle speed also reduces, grit natural separation from air-flow is deposited to the bottom, and the air-flow that is cleaned then moves upward in the atmosphere.Owing to leave certain space between diversion tower and the side fascia, the air-flow that diversion tower is come out forms Inertia in Airflow and dust settling district, and side fascia has also played the sound insulation effect simultaneously.
Mining dedusting denoising device of the present utility model does not occupy main air channel, simple in structure, easy construction, can reduce the fan operation noise, can remove dust in the air-flow again, purify the air port air-flow, through experimental test, its device resistance is less than 80Pa, noise reduction is greater than 10dB (A), and efficiency of dust collection is greater than 85%.
Description of drawings
Fig. 1 is the sectional view of the utility model embodiment along the horizontal plane direction;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is that the B-B of Fig. 1 is to sectional view;
The dust-cleaning principle schematic diagram of Fig. 4 the utility model embodiment.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Referring to Fig. 1, Fig. 2 and Fig. 3, the dedusting denoising device of present embodiment, be installed on the ventilating shaft exhast duct 1 on the ground 11 top and around, promptly on the exhast duct partition wall 9 between two ventilating shafts, be provided with sound-absorbing partition 3 perpendicular to ground line, the upper end of sound-absorbing partition 3 is connected with the suitable sound absorption top board 4 of area that is parallel to horizontal plane and its area and air outlet 2, sound absorption top board 4 peripheries are connected with the sound absorption side plate 5 perpendicular to ground line, sound absorption side plate 5 is shorter than sound-absorbing partition 3, is provided with the flow deflector 6 of the downward-sloping blind shaped of outlet between sound absorption side plate 5 and the exhast duct exterior wall 10; Around exhast duct exterior wall 10, be provided with and have a determining deviation with it and perpendicular to the side fascia 7 of ground line, the upper end is connected with the deflector 8 that is parallel to horizontal plane around the side fascia 7, and the width of deflector 8 is less than the spacing width between side fascia 7 and the exhast duct exterior wall 10.From Fig. 1, also can see, on side fascia 7, have door 12, so that enter cleaning in the dust settling district.
In conjunction with Fig. 4; the mine dust-laden that ventilating shaft exhast duct 1 is discharged is distinguished and admirable in air outlet 2 enters dedusting noise reduction tower; because sound-absorbing partition 3 around the dedusting noise reduction tower; sound absorption top board 4; the restriction of sound absorption side plate 5; the mine dust-contained airflow is downward side flow behind the export orientation of three side band flow deflectors 6; grit in the dust-contained airflow obtains the inertia of downward lateral movement; impact side fascia 7; behind the grit inertial collision side fascia 7; dust-contained airflow is lateral movement downwards further; the air-flow along continuous straight runs flows after arriving ground, air current flow, and it is big that the space becomes; air velocity reduces; the grit gravitational settling, the air-flow that separates behind the grit turns to motion, turns to the air-flow that the moves upward guiding through horizontal deflector 8; make the grit horizontal deflector 8 of inertial collision and lateral movement downwards, further gravitational settling again in the air-flow.Sound-absorbing partition 3, sound absorption top board 4, sound absorption side plate 5 is made by efficient sound absorption material, can absorb the noise in the air-flow, and side fascia 7 can adopt sound insulating material, metal material to make, and also can be concrete wall, and it can outwards be propagated by noise isolation.
Claims (1)
1, a kind of dedusting denoising device of mining ventilating shaft air outlet, be installed on ventilating shaft exhast duct (1) top and around, it is characterized in that: on the exhast duct partition wall (9) between the ventilating shaft, be provided with sound-absorbing partition (3) perpendicular to ground line, the upper end of sound-absorbing partition (3) is connected with the suitable sound absorption top board (4) of area that is parallel to horizontal plane and its area and air outlet (2), sound absorption top board (4) periphery is connected with the sound absorption side plate (5) perpendicular to ground line, sound absorption side plate (5) is shorter than sound-absorbing partition (3), is provided with the flow deflector (6) of the downward-sloping blind shaped of outlet between sound absorption side plate (5) and the exhast duct exterior wall (10); Around exhast duct exterior wall (10), be provided with and have a determining deviation with it and perpendicular to the side fascia (7) of ground line, the upper end is connected with the deflector (8) that is parallel to horizontal plane around the side fascia (7), and the width of deflector (8) is less than the spacing width between side fascia (7) and the exhast duct exterior wall (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200529833U CN201202487Y (en) | 2008-04-23 | 2008-04-23 | Dust removing noise reducer of mining ventilation shaft air exit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200529833U CN201202487Y (en) | 2008-04-23 | 2008-04-23 | Dust removing noise reducer of mining ventilation shaft air exit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201202487Y true CN201202487Y (en) | 2009-03-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200529833U Expired - Fee Related CN201202487Y (en) | 2008-04-23 | 2008-04-23 | Dust removing noise reducer of mining ventilation shaft air exit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201202487Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245797A (en) * | 2015-09-09 | 2016-12-21 | 无锡亮慧环保机械有限公司 | Many dividing plates buffer-type noise abatement structure of machine room |
| CN106320562A (en) * | 2015-09-09 | 2017-01-11 | 无锡亮慧环保机械有限公司 | Noise control structure for machine room |
| CN106988774A (en) * | 2017-03-31 | 2017-07-28 | 重庆房地产职业学院 | Sunk type ventilating shaft for underground space building |
| CN107949249A (en) * | 2017-11-29 | 2018-04-20 | 无锡澳蓝特环保科技有限公司 | Large and medium-sized charging station sound insulation and noise reducing cooling device |
-
2008
- 2008-04-23 CN CNU2008200529833U patent/CN201202487Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245797A (en) * | 2015-09-09 | 2016-12-21 | 无锡亮慧环保机械有限公司 | Many dividing plates buffer-type noise abatement structure of machine room |
| CN106320562A (en) * | 2015-09-09 | 2017-01-11 | 无锡亮慧环保机械有限公司 | Noise control structure for machine room |
| CN106988774A (en) * | 2017-03-31 | 2017-07-28 | 重庆房地产职业学院 | Sunk type ventilating shaft for underground space building |
| CN107949249A (en) * | 2017-11-29 | 2018-04-20 | 无锡澳蓝特环保科技有限公司 | Large and medium-sized charging station sound insulation and noise reducing cooling device |
| CN107949249B (en) * | 2017-11-29 | 2024-01-16 | 无锡澳蓝特环保科技有限公司 | Sound insulation and noise reduction cooling device for large and medium charging station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20120423 |