CN1021955C - Serially connected dust filter for mine ventilation - Google Patents
Serially connected dust filter for mine ventilation Download PDFInfo
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- CN1021955C CN1021955C CN 89105717 CN89105717A CN1021955C CN 1021955 C CN1021955 C CN 1021955C CN 89105717 CN89105717 CN 89105717 CN 89105717 A CN89105717 A CN 89105717A CN 1021955 C CN1021955 C CN 1021955C
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- filter bag
- uniform speed
- dust
- boring
- blower fan
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Abstract
The present invention relates to a serial ventilating and dust filtering device for a mine, which is formed by the sealing series connection of an axial flow fan, an air cylinder valve and one to multiple sections of filter bags with drilling holes and uniform speed pipes inside through short hoses. The present invention also discloses uniform speed pipes capable of homogenizing filtering wind speed on the surface of the filter bag and a distribution method of drilling holes thereof. The serial ventilating and dust filtering device has the advantages of large processing air quantity, high efficiency, small cross section area, light weight and good flexibility, and can be used in mine drifts with small cross sections; the serial ventilating and dust filtering device is used for local ventilation and dust removal in a dead drift with the cross section of 6m+[2], has the dust production intensity of 150 to 200 mg/m+ [3], and lowers the dust concentration from 9 mg/m+ [3] to less than 2 mg/m+ [3].
Description
The invention belongs to mining ventilating dust leaching device, it is made of axial flow blower, filter bag.
EP0181716 discloses a kind of filtering flow machine, it by the boring hollow cylinder, be contained on the cylinder support of undulate radially and be close to the filter element (filter bag) that the filtrate of support forms and be installed in formation in the airtight hollow shell, fluid enters the housing inner room from input pipe, passes filter bag and is discharged by efferent duct.Because its improvement to filtrate and hermetically-sealed construction, defectives such as big fall in the fluid leakage and the pressure that have overcome the machine of the technical filter formerly existence of same structure.But it is used for ventilation dust-filtering under the mine, still shows complex structure, moves and cleans and to change filtrate dumb, and serial connection uses air loss big, and it is little to handle air quantity, the ventilation dust-filtering weak effect.Chinese patent 85103719A discloses the compound mine dust removing device of a kind of static-filtrate, but its heavy 400kg, be contained on the mine car mobile restricted, the down-hole high humidity, cross-sectional area 1m is cannot say for sure in the reliable and safety of high-pressure electrostatic precipitation
2, cundy is inapplicable.
The objective of the invention is to overcome the weak point of above-mentioned ventilating dust-arrester, provide a kind of cross-sectional area little, it is big to handle air quantity, in light weight, flexible for installation, security of operation and expense are low, easy to maintenance, be particularly suitable for the series splicing ventilating dust leaching device that use in the small-sized tunnel.
For achieving the above object, the present invention is formed by more piece filter bag and an axial flow blower serial connection, can also be connected in series an air duct valve between filter bag and blower fan, and each serial connection that saves filter bag, air duct valve and blower fan adopts short flexible pipe, make whole filter can appropriateness crooked, use to be suitable for the small-sized tunnel.After guaranteeing more piece filter bag serial connection, blower fan end far away still can keep enough air quantity, and nearly blower fan end does not reduce ventilating dust-removing effect again, is provided with the uniform speed tube of a boring in every joint filter bag inside.This uniform speed tube's boring radially is evenly distributed on the tube wall distance uniform speed tube top different distance, form some holes circle, the distance at the aperture of boring and hole circle center line and uniform speed tube top has certain rules, follow is being symmetrical centre with any two adjacent holes circle center lines, and in two circle ring areas that join each other, the ratio that enters the air quantity of the uniform speed tube's inner chamber filter bag surface area corresponding with this circle ring area by boring is the rule of constant, make the filter material surface wind speed homogenising of nearly blower fan end and blower fan end far away, improve ventilation dust-filtering efficient greatly.
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is an assembling schematic diagram of the present invention.
Fig. 2 is a filter bag front view of the present invention.
Fig. 3 is a filter bag lateral view of the present invention.
Fig. 4 is an air duct valve front view of the present invention.
Fig. 5 is an air duct valve valve door leaf folding schematic diagram of the present invention.
Fig. 6 is the B portion enlarged drawing of Fig. 3.
Fig. 7 is the uniform speed tube of the present invention boring schematic diagram of arranging.
Each joint filter bag 1 of this concatenation type ventilating dust leaching device, 2,3 skeleton, by the outer rim that is welded on the short garden of filter bag two ends metal tube 8, support crest skeleton 9 and the trough skeleton 10 of wavy metal screen cloth 11 to consist of, the wavy metal screen cloth 11 of being close to installation around crest skeleton and trough skeleton is undulate radially. Fine filtering material 12 is close to the ripple screen cloth and is installed, and push down fine filtering material 12 with the elastic band of the little hook of two ends band metal at the trough place, elastic band little is hooked on the shackle of filter bag two ends metal short cylinder 8, utilize the tension force of elastic band to make the fine filtering material be close to also waviness of ripple screen cloth, to increase filter area, reduce windage, and have bigger air quantity and dust containing capacity. Coarse media 13 is coated on the outside of fine filtering material 12,, and the filter bag two ends should be sealed around being cylindrical in shape along the crest of crest skeleton. Like this, filter bag is made of two filter elements: coarse media outside, filtering coarse granule dust, fine filtering material are interior, the thin dust of filtering have high efficiency of dust filtration to guarantee filter bag, and also can improve the service life of fine filtering material. Each filter bag all is shelved on the angle bar frame that is welded with the steel plate identical with the short garden of this metal tube radian by the short garden of the metal at its two ends tube, and two spacing rings 14,15 that are welded on the metal short cylinder block support, both made filter bag can not before and after play, be convenient to again The rotation filter bag, the dismounting filtrate.
Feature of the present invention also is, inserts the uniform speed tube with boring 7 of a metal or sheet plastic system in filter bag, and after the uniform speed tube inserted filter bag, the inner edge of filter bag two ends metal short cylinder 8 should be close in its two ends, combined as a whole with the metal short cylinder. The uniform speed tube is set is and find when the filtercondition of filter bag is analyzed, when a uniform speed tube with boring is set at the filter bag inner chamber, and boring radially being evenly distributed on the tube wall in distance uniform speed tube top different distance, form some holes circle, as long as take any two adjacent holes circle center lines as symmetrical centre, and in two circle ring areas that join each other, the ratio that enters the air quantity of the uniform speed tube's inner chamber filter bag surface corresponding with this circle ring area by boring is constant, can make filter bag surface filtration wind speed homogenising. The density that the upper boring of uniform speed tube is arranged, namely the distance between each hole circle is exactly to use accordingly aerodynamics fundamental formular calculative determination. At first, according to for satisfying the selected blower fan model of face-airing needs, the filter bag joint number that design determines with filter bag diameter and the single-unit filter bag length of its coupling and needs be connected in series designs and determines the first Kong Quan aperture, according to filter bag with XiCentered by line hole circle circle ring area with Xi+1Centered by on the circle ring area (as shown in Figure 7) of hole circle of line, enter the air quantity q of filter bag inner chamber by boringiAnd qi+1The filter bag area B corresponding with this circle ring areaiAnd Bi+1Ratio be constant, and according to aerodynamic fundamental formular, adopt filter bag is decomposed into the method that cell area calculates, can calculate each hole circle center line of uniform speed tube's boring and the distance of uniform speed tube's blower fan end far away by from coil to coil. When same uniform speed tube adopts the boring of same apertures, distribute vertically, the pitch-row of nearly blower fan end is bigger than the pitch-row of blower fan end far away; The uniform speed tube of the filter bag of different serial connections position adopts the boring of different-diameter, and the uniform speed tube aperture of nearly blower fan end filter bag is littler, and the uniform speed tube aperture of blower fan end far away is bigger. Different pore size also can be adopted in same uniform speed tube's aperture, and the uniform speed tube of different filter bags also can adopt same aperture, should determine according to filter bag size, length and processing and fabricating are convenient. During Practical Calculation, also can begin to calculate from nearly blower fan end, can also design filter bag by the aforementioned method of calculating since first hole, select again the blower fan with its coupling, no matter adopt which kind of mode to calculate, the axial hole distance Really establish a capital and to satisfy qiAnd qi+1With BiAnd Bi+1Ratio be constant.
Serial connection three joint filter bags are measured respectively when the uniform speed tube being arranged in the filter bag and not having the uniform speed tube, and the wind speed result of filter material surface is such as uniform four measuring points of the table every joint filter bag of 1(, and compiling successively to nearly blower fan end from blower fan end far away is 1 to No. 12).
Table 1 unit: m/min
Survey period 123456789 10 11 12
No uniform speed tube 3.0 3.3 3.5 4.0 4.5 5.7 6.5 7.5 9.0 11.5 15 20
Uniform speed tube 6.6 6.6 6.6 6.6 6.6 6.6 6.6 6.6 6.6 6.6 6.9 7.5 is arranged
Annotate: blower fan model JK55-II, 2N04, uniform speed tube's diameter phi 372mm, filter bag length overall 3200mm.
As shown in Table 1, after adding the uniform speed tube in the filter bag, make the filter bag surface filtration wind speed uniformity of nearly blower fan end and blower fan end far away, thereby nearly blower fan end filter bag negative pressure height when having overcome no uniform speed tube, filtration velocity is big, dust is easy to penetrate filtrate, and the negative pressure of blower fan end filter bag inner chamber far away then descends a lot, wind flow is very little, the drawback that causes ventilating dust-removing effect to descend significantly.
When the present invention is used to have the place that serious blasting fume pollutes, be to prolong the filter bag ash removal cycle, can between filter bag and blower fan, be connected in series an air duct valve 5.It can be made of one section short metal air duct, or specialized designs is made.Open a valve window 16 on the middle wall of air duct valve, valve window edge connects the radian valve door leaf 18 identical with air duct cylindrical radian with hinge 17, and the valve door leaf can free folding valve window.When not blowing in machine, the valve door leaf is sagging by deadweight, and the valve window is normally open.After blowing out, when starting dust filtering fan, the air-flow that contains a large amount of blasting fume dust promptly directly enters blower fan through the valve window, without filter bag, has protected filter bag not by smoke contamination, and the fine filtering material is not blocked.This moment, dust filtration device played reinforcement dust discharge effect, helped taking out the flue dust that the dirt blower fan is extracted work plane as early as possible out.When dust quantity was reduced near the wind regime situation, the valve door leaf that can hold in the palm, valve door leaf then were pull-in on the valve window by the negative pressure in the dust filtration device, and outside dust-contained airflow must be sent to work plane again after media filtration purifies, and realized the purpose that local circulation wind depositing dust ventilates.In the place of no blasting fume dust severe contamination, when doing the ventilation of local circulation wind depositing dust, can set up valve door leaf stabilizer (-iser) with this ventilating dust leaching device, also can not be connected in series the air duct valve.The air duct valve is similar to filter bag, also is to be shelved on the angle bar frame, locatees with angle steel 19 with the reinforcing around the air duct valve, also can rotate, thereby the angle of the sagging unlatching in adjustable valve door leaf is used to adapt under different capacity blower fan and the negative pressure operating mode.
Between blower fan 4, air duct valve, the every joint filter bag, adopt short flexible pipe 6 to be coupled to each other.Owing to all be provided with little bead on every joint filter bag, air duct valve, the fan connector, after on the short Hose Jacket, available rope is tightened, and fasteners envelopes such as also available anchor ear, quick button hoop are pricked, and are both salable, do not make its slippage again, like this, can make the dust filtration device appropriateness after the serial connection crooked, be suitable in crooked uneven tunnel, using, also can play the vibration isolation effect, the vibration when avoiding fan starting and running causes reentrainment of dust.Short flexible pipe can adopt glass fiber rubber air duct, also can use special rubber bellows.
The present invention uses the blind plate shutoff away from the filter bag end of blower fan end.
This ventilating dust leaching device can generally be used with 1～3 joint filter bag serial connection by 1～5 joint, is mainly used in mine local ventilation dedusting.
The long-pending tunnel of different section that is used for single work plane, or be used for the dust removal by ventilation of many work planes, or do the secondary ventilation dedusting of unclean wind regime, the joint number of the size of the every joint filter bag of the present invention, serial connection filter bag, the model of adapted axial flow blower all should be selected according to actual conditions, and the uniform speed tube's of the every joint filter bag of calculating decision boring aperture and axial hole distance are arranged in view of the above.
Example example 1 is made the ventilating dust-arrester of one three joint filter bag serial connection.The crest skeleton 9 external diameter 550mm of every joint filter bag, clean long 900mm, trough skeleton 10 internal diameter 380mm, clean long 900mm, the short garden tube 8 external diameter 380mm of two ends metal, filter bag length overall 1050mm, wavy metal screen cloth 11 are 12 order steel-wire screens, it is nylon felt or the polypropylene fibre felt of 2～5 μ m that fine filtering material 12 adopts fibre diameter, and coarse media 13 employing fibre diameters are the terylene felt about 15 μ m.Uniform speed tube 7 external diameter 372mm, length 1000mm makes of the 0.8mm steel sheet and plate.Uniform speed tube's boring from coil to coil is vertically arranged, and 30 of even punchings are enclosed in each hole, 1/2 pitch-row of hole dislocation on the circle of adjacent two holes.The aperture of every joint filter bag and axial hole are apart from listing in table 2.
Table 2 boring aperture and hole circle center line are to uniform speed tube top distance
Filter bag numbering aperture X
i(mm)
（mm）
76 97 119 141 163 185 208 231 254
277 300 324 348 372 396 421 446 471
First segment 11.1
496 522 548 574 601 628 655 683 711
739 768 798 828 859 891 924
70 89 109 129 149 169 190 211 232
254 276 299 322 345 369 393 417 442
Second joint 7.73
467 492 518 544 571 598 626 654 682
711 740 770 800 831 862 894 928
62 86 110 135 160 185 211 237 264
291 319 347 376 405 435 466 497 529
The 3rd joint 6.05
561 594 628 662 696 731 767 803 839
877 915
Illustrate: 1, the filter bag numbering is counted from blower fan end far away, is followed successively by first, second and third joint,
2, X
iFor hole circle center line and uniform speed tube top distance, count from blower fan end far away, be followed successively by X
1, X
2X
i, X
I+1
Air duct valve 5 usefulness 1.5mm steel plates are made, external diameter 380mm, or directly utilize the metal air duct of φ 380mm specification to make total length 600mm.Valve window 16 long 400mm, arc length 400mm, valve door leaf 18 sizes are more bigger than valve window, make for the 1.5mm steel plate of thickness.The adapted blower fan is a JK55-II 2N04 type, with φ 380mm rubber corrugated flexible hose blower fan, air duct valve, the 3rd, two, a joint filter bag are connected in series successively, and with the blower fan end blind plate shutoff far away of first segment filter bag, ventilating dust leaching device of the present invention, it comprises that the cross-sectional area of support is 0.44m
2, filter area 24m
2, toward the work plane air-supply, air quantity can reach 140m at fan outlet serial connection 10m φ 380mm air duct
3/ min is used for 6m
2Dirt intensity 150～200mg/m is produced in the compound ventilation dedusting of section tunnel
3, face dust concentration is by 5～9mg/m
3, reduce to 1.5～2mg/m
3Below.
Embodiment 2, and first and second joint filter bag, air duct valve, JF42-2 profile shaft flow fan and the 10m air duct made by embodiment 1 are concatenated into two filter bag series splicing ventilating dust leaching devices of the present invention, filter area 16m successively
2, air quantity 99m
3/ min is used for 6m
2The compound ventilation dedusting of section tunnel, face dust concentration is by 3～5mg/m
3Reduce to 2mg/m
3Below.
Embodiment 3, and first segment filter bag, the T40-11 И 04 profile shaft flow fan made by embodiment 1 are concatenated into single-unit ventilation dirt dust filtration device of the present invention, add 10m air duct dedusting air-supply, filter area 8m
2, air quantity 51m
3/ min is used for 6m
2Section tunnel dust removal by ventilation, face dust concentration is by 3mg/m
3Reduce to 2mg/m
3Below.
This concatenation type ventilating dust leaching device has following advantage: behind (1) serial connection more piece filter bag, nearly blower fan end is even with the filter material surface wind speed of blower fan end far away, air quantity is big, the efficiency of dust collection height; (2) filter area is big, and cross-sectional area is little, (the heavily about 65kg of every joint filter bag) in light weight; (3) flexible for installation, dismounting and filtrate easy to clean are particularly suitable for small section tunnel and use; (4) be used for the deeply dust removal by ventilation of mine, energy consumption is low.
This concatenation type ventilating dust leaching device can be widely used as the local ventilation cleaner of the various section dead faces of mine down-hole or Multi-working-surface, especially for the purification of circulated air.
Claims (3)
1, a kind of mining ventilating dust leaching device, it is formed by axial flow blower and 1 to 5 joint filter bag serial connection, the skeleton of the radially undulate that its filter bag comprises the boring hollow cylinder, combine as a whole with cylinder, be close to the wavy metal screen cloth that skeleton installs and be attached at fine filtering material on the wavy metal screen cloth, it is characterized in that:
(1) the boring hollow cylinder is the uniform speed tube that can make the filter bag surface filtration wind speed uniformity of blower fan end far away and nearly blower fan end; Its boring is made uniform radial distribution at the tube wall of distance uniform speed tube top different distance; Form some holes circle; From coil to coil determine boring aperture and hole circle center line and uniform speed tube top apart from the time; Should satisfy take any two adjacent holes circle center lines as symmetrical centre; And in two circle ring areas that join each other; The ratio that enters the air quantity of the uniform speed tube's inner chamber filter bag surface area corresponding with this circle ring area by boring is constant
(2) along the crest of waveform skeleton be provided with one filter bag sealed at both ends, wavy metal screen cloth and fine filtering material package are overlayed on coarse media inner, that be cylindrical in shape.
2, mining ventilating dust leaching device according to claim 1, the boring that it is characterized in that the uniform speed tube of same filter bag can be same aperture, also can be different apertures, the uniform speed tube's of the different filter bags of serial connection boring can be that blower fan stomidium far away footpath is big, nearly blower fan stomidium footpath is little, also can all be same aperture.
3, mining ventilating dust leaching device according to claim 1 and 2, it is characterized in that to be connected in series an air duct valve between axial flow blower and the nearly blower fan end filter bag, the air duct valve has the valve window, and being provided with one can free folding, the sagging and valve door leaf of opening of reliable deadweight during the blowing-out machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105717 CN1021955C (en) | 1989-05-10 | 1989-05-10 | Serially connected dust filter for mine ventilation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105717 CN1021955C (en) | 1989-05-10 | 1989-05-10 | Serially connected dust filter for mine ventilation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1047216A CN1047216A (en) | 1990-11-28 |
| CN1021955C true CN1021955C (en) | 1993-09-01 |
Family
ID=4856367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105717 Expired - Fee Related CN1021955C (en) | 1989-05-10 | 1989-05-10 | Serially connected dust filter for mine ventilation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021955C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100475311C (en) * | 2004-06-23 | 2009-04-08 | 株式会社小松制作所 | Air cleaner |
| CN103397899B (en) * | 2013-08-13 | 2017-03-01 | 煤炭科学技术研究院有限公司 | A kind of driving face ventilation terminal |
| CN107685062B (en) * | 2016-03-01 | 2020-06-16 | 安徽森米诺农业科技有限公司 | Grain cleaning and dust removing device |
-
1989
- 1989-05-10 CN CN 89105717 patent/CN1021955C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1047216A (en) | 1990-11-28 |
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