CN1803297A - Compound type regrind mill - Google Patents

Compound type regrind mill Download PDF

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Publication number
CN1803297A
CN1803297A CN 200610010650 CN200610010650A CN1803297A CN 1803297 A CN1803297 A CN 1803297A CN 200610010650 CN200610010650 CN 200610010650 CN 200610010650 A CN200610010650 A CN 200610010650A CN 1803297 A CN1803297 A CN 1803297A
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China
Prior art keywords
impeller
grinding
cage
compound type
fan impeller
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CN 200610010650
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Chinese (zh)
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CN100364669C (en
Inventor
庞德明
庞旋
庞虹
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庞德明
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Priority to CNB200610010650XA priority Critical patent/CN100364669C/en
Publication of CN1803297A publication Critical patent/CN1803297A/en
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Publication of CN100364669C publication Critical patent/CN100364669C/en

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Abstract

The invention discloses a compound regrind mill, which comprises the following parts: chassis, case, grinding structure, feeding device, removing disk and driving device, wherein the grinding structure contains grinding disk, grinding roll, centripetal tension ring, drive plate and vertical shaft on the chassis; the driving device contains speed transmission gear, transverse shaft and grinding roll belt wheel; the volute cyclone lid is set on the top of case, which contains fan impeller; the grading cage is set under the impeller, which possesses the same axle with the impeller; the impeller axle of fan is hollow axle, whose middle is pierced by axle of grading cage with top exposing the fan impeller; the belt wheel is set in the fan impeller shaft with bottom end extending in the fan impeller inlet, which contains grading cage. The invention can precede fine grinding and grading simultaneously on the same machine, which improves the grinding efficiency and reduces the manufacturing cost.

Description

Compound type regrind mill
Technical field the invention belongs to a kind of material fine grinding or Ultrafine Grinding equipment, especially a kind of compound type regrind mill.
Disclose background technology on August 2nd, 2000 " utility model communique " the applicant 99243402.5, name is called " vertical regrind mill ", this machine can be regarded as new a kind of technical scheme for the fine grinding of dryness material and Ultrafine Grinding provide at that time, certain impetus has been played in the technological progress of the art. Along with going deep into of research and production practice, the problem and shortage of this patent is also constantly displaying. At first, the dry type regrind mill that this patent provides does not have grading function, and the material that enters mill all upward grinds regardless of thickness, also can not divide thickness to mix after grinding. The thickness that will grind in fact rear material is separated also must both increase equipment investment by other classifying equipoments, has increased again power consumption and the loss of grinding machine, and the precision of classification is also when being able to do in time in same equipment and efficient. Secondly, this vertical regrind mill in the roller shape and quantitatively, design at centripetal tension ring and driver plate and also to have some deficiency. The effect of grinding is not fully played.
Summary of the invention the objective of the invention is to propose a kind of compound type regrind mill that separates with thickness of realizing grinding in same grinding machine, improve grinding efficiency and effectiveness of classification, reduces power consumption, to solve the deficiencies in the prior art.
This compound type regrind mill that the present invention proposes, its organic block, casing, grinding mechanism, feed arrangement, spreading disk and transmission device, grinding mechanism contains and is bearing in support upper millstone, grinding roller, centripetal tension ring, driver plate and vertical shaft, transmission device contains change-speed gearing, transverse axis and grinding roller belt pulley, it is characterized in that the casing upper end is connected to spiral case whirlwind cover, draught fan impeller is housed in the cover, and there are classification cage, impeller and classification cage concentric in the impeller below.
Blower fan impeller shaft is hollow shaft, the middle part has the concentric shafts of classification cage to pass, stretch out on the blower fan impeller shaft upper end, directly driven by vertical machine, belt pulley is equipped with in the blower fan impeller shaft upper end, and by another driven by motor vane rotary, the lower end extends below the draught fan impeller air inlet, and the classification cage is housed, under driving, rotates by vertical machine. Fan shaft is fixed on upper and lower two and controls on the bearing and rotate.
The blade of draught fan impeller has two groups of linear leaf and short blades, alternate configuration, linear leaf rises from impeller sleeve for approximate S shape, terminates in periphery, short blade is approximate half S shape, arise from the imaginary circle place between axle sleeve and the periphery, terminate in periphery, long and short blade all is fixed on the upper side board and lower side board of impeller, linear leaf also is fixed on the axle sleeve simultaneously, and upper side board and axle sleeve link fixing.
Grinding roller is positive wheel shape, is fixed on the centripetal tension ring by shaft of grinding roller and revolves round the sun, and rotation on bull ring, the driver plate of coaxial rotation is equipped with in the top of centripetal tension ring, and the shaft of grinding roller revolution in pushing. Grinding roller quantity is decided on the grinding machine size, is at least 3, is evenly distributed on the bull ring.
The classification cage is the cage of an inversed taper platform shape, and the cage bar is reinforcing bar. The rotating speed of classification cage is regulated by the upright stepless speed-regulating motor that drives it.
The helix structure of spiral case whirlwind cover for gradually opening, its outlet is connected with dust-precipitator or other classifying equipoments.
Spreading disk is to be installed in driver plate top and a disk of coaxial rotation with it, and rib is arranged on the card. Wait that the material that grinds is scattered on the bull ring by it. Spreading disk also can be fixed on the casing by a spreading plate rail, to increase its steadiness.
Feed pipe is introduced from a perforate of enclosure wall, receives by the groove that connects material on the spreading disk of classification cage below.
The course of work of the present invention is such: after machine starts, grinding roller is under the driving of transmission mechanism, rotate at bull ring, when treating that grind materials is incorporated on the spreading disk from feed pipe, to grind and broken with regard to being dispersed on the bull ring by grinding roller, the swabbing action that the material after levigate produces in the draught fan impeller rotation suspends, the fine granular materials rate of climb is fast, pass very soon classification cage space and enter the impeller suction district, be thrown to spiral case whirlwind cover by blade, enter dust collecting system or next classifying equipoment. Thicker granule materials is subjected to the effect of gravity and air drag larger, and the rate of climb is slower, adds stopping and falling back on the bull ring further levigate of classification cage. By adjusting the rotating speed of classification cage, just can regulate needed classification dimensions, rotating speed is higher, and partition size is thinner, otherwise then thicker.
The present invention has realized function levigate on same machine and that classification is finished simultaneously, thereby has improved the effect of grinding machine, has reduced production cost. Because draught fan impeller has adopted the streamline design of approximate S shape, and linear leaf and short blade arrange in pairs or groups mutually, and material is from axially entering from radially throwing away, and the air draught pressure stability is without leaking dust, non-environmental-pollution. The classification cage of circular bar spoke structure has been avoided the generation of air inducing acceleration, makes powder can be more accurately carry out classification by the Cut size of prior setting, and classification is renderd a service high, and the classification quality is good. The hollow concentric design that is nested of blower fan impeller shaft and classification cage axle, so that machine more steps up to play rationally, it is more convenient to operate.
Appended drawings 1 is general structure front view of the present invention (broken section).
Accompanying drawing 2 is profile front views.
Accompanying drawing 3 is profile top views.
Accompanying drawing 4 is driver plate front views.
Accompanying drawing 5 is spreading disk front views.
Accompanying drawing 6 is blower fan impeller shaft and classification cage axle combining structure front view (broken section).
Accompanying drawing 7 is draught fan impeller front view figure (broken section).
Accompanying drawing 8 is draught fan impeller A-A profiles.
Accompanying drawing 9 is grinding roller and shaft of grinding roller structural front view.
Accompanying drawing 10 is classification cage front views.
Accompanying drawing 11 is classification cage top views (part).
Accompanying drawing 12 is grain size characteristic curve figure of institute of the present invention grind materials.
Among the accompanying drawing 1-11, the label of each parts is as follows:
The 1-frame; 2-grinding roller belt pulley; The 3-transverse axis; The 4-change-speed gearing; The 5-casing; 6-spreading plate rail; The 7-spreading disk; The 8-blower motor; 9-classification cage; Control the bearing fixed spoke under the 10-blower fan main shaft; The 11-blower belt; 12-classification cage motor; 13-blower belt wheel; The 14-feed pipe; Machine impeller in the 15-; 16-spiral case whirlwind cover; The 17-groove that connects material; The 18-driver plate; The 19-grinding roller; The centripetal tension ring of 20-; The 21-bull ring; The 22-shaft of grinding roller; 23-mill seat ring; 24-classification cage main shaft; Control bearing on the 25-classification cage; 26-classification cage motor cabinet; 27-blower belt wheel shaft is controlled bearing; 28-blower fan main shaft shaft coupling; 29-blower fan load-bearing bearing; 30-blower fan main shaft bearing block; The 31-blower fan main shaft; Control bearing on owner's axle in the 32-; Control bearing under the 33-blower fan main shaft; Control bearing under the 34-classification cage; 35-classification cage; 36-classification cage hold-down nut; The 37-impeller sleeve; Side board under the 38-impeller; Side board on the 39-impeller; The 40-linear leaf; The 41-short blade.
The specific embodiment is take CN99243402.5 number " vertical regrind mill " patent of above-mentioned the applicant as the basis. This routine frame 1, grinding roller belt pulley 2, transverse axis 3; Change-speed gearing 4, casing 5, centripetal tension ring 20, driver plate 18, grinding roller 19, bull ring 21, mill seat ring and spreading disk 7 and the parts such as the vertical pivot that does not mark numbering and mutual structural relation are identical or close with it. Different persons, the grinding roller shape has become positive wheel shape by dish, and quantity has become 9 by 3. Spiral case whirlwind cover 16 sidelines above the casing are for gradually opening helix, and the cover mouth is connected with dust-precipitator or other classifying equipoments. Be installed in draught fan impeller 15 shapes in the whirlwind cover shown in Fig. 7-8. Its linear leaf 40 is approximate serpentine, and an end is weldingly fixed on the impeller sleeve 37, and both sides are fixed on the impeller on the side board 39 and lower side board 38. Short blade 41 is the approximate serpentine of half, and both sides are separately fixed on the upper and lower side board of impeller, and two ends are free, upper side board complete closed, and lower side board has a circular air inlet. This example is evenly distributed with continuous two short blade intervals one block length blade. Can also determine according to actual needs the spread pattern of long and short blade, join block length blade etc. such as the one or a few blocks short blade. During installation, upper side board one faces up, and lower side board one faces down, and horizontal positioned is fixed on the blower fan main shaft 31. Blower fan main shaft is again by controlling bearing 32 on the blower fan main shaft that is fixed on the spiral case whirlwind cover and controlling bearing 33 supporting rotations down. The fixed form of controlling bearing down is for to be welded on the whirlwind cover wall with three to five fixed spoke 10, and on control bearing and be fixed on the whirlwind cover top by blower fan main shaft bearing block 30. Blower fan main shaft is driven by motor 8 by the blower belt wheel 13 of its upper end. The shape of classification cage 9 and structure as mentioned above, it is directly installed on the classification cage main shaft 24 of draught fan impeller air inlet below, and a hold-down nut 36 is arranged bottom. Classification cage main shaft is directly driven by the stepless speed-change motor 12 of its upper end. Because draught fan impeller all is to be hung on its vertical main shaft with the classification cage, their weight and movement load carry by controlling bearing 25 on the blower fan load-bearing bearing 29 of conical roller and the classification cage respectively, so just guaranteed motion steadily and reliably.
Feed pipe 14 is guided to the casing upper-end part of driving from the whirlwind cover outside, introduces by pipeline on the spreading disk of grinding machine inside, also can connect with the groove 17 that connects material and guide on the dish.
NM parts as mentioned above in this example.
Technical-economic index such as the table 1 of the machine different size, the nominal material is lime stone and calcite in the table, moisture content 2%.
Table 1
Specifications and models (casing diameter, grinding roller number) Grinding roller number (individual) Spindle revolutions (r/min) The production capacity parameter Production capacity (t/h)
Minimum δ1 Maximum δ2   <2.5μm   <5μm   <10μm   <19μm   <43μm   <74μm
5000 orders 2500 orders 1250 orders 800 orders 325 orders 200 orders
  Φ600-3   3   210   1.0   1.5   0.1-0.15   015-0.20   0.2-0.25   0.25-0.3   0.3-0.35   0.4-0.5
  Φ1000-6   6   127   2.0   5.4   0.2-0.8   0.3-1.1   0.4-1.3   0.5-1.6   0.6-1.9   0.8-2.7
  Φ1400-9   9   73   3.0   64   0.3-1.0   0.4-1.3   0.6-1.6   0.7-1.9   0.9-2.2   1.2-3.2
  Φ1800-13   13   52   4.3   7.7   0.4-1.2   0.6-1.5   0.8-1.9   1.0-2.3   1.3-2.7   1.7-3.8
  Φ2500-20   20   33   6.7   10.1   0.7-1.5   1.0-2.0   1.3-2.5   1.7-3.0   2.0-3.5   2.7-5.0
  Φ3200-27   27   25   9.0   12.4   0.9-1.8   1.4-2.4   1.8-3.0   2.2-3.7   2.7-4.3   3.6-6.2
  Φ5000-45   45   15   15.0   18.4   1.5-2.7   2.2-3.7   30-4.6   3.7-5.5   4.5-6.4   6.0-9.2
Remarks: δ1-be applicable to lime stone and marble; δ2-be applicable to calcite, coal etc. Power consumption (Kw.h/t)   38   19   9.5
Grinding machine gained coarse whiting matter powder carries out the Laser particle-size distribution detection through sampling in the upper table, result such as table 2, and corresponding grain size characteristic curve is seen accompanying drawing 12.
Table 2
Sample title: tang suo gai accumulative total 10% particle diameter: 0.72 micron
Specimen coding: accumulative total 50% particle diameter: 3.54 microns
Reagent name: H20 accumulative total 90% particle diameter: 10.04 microns
Operating personnel; LUO accumulative total 97% particle diameter: 13.22 microns
Concentration: 55 average grain diameters: 4.64 microns
Surface area/volume: 33840cm2/cm 3
Particle diameter (μ m) Volume cumulative distribution (%) Frequency distribution (%) Particle diameter (μ m) Volume cumulative distribution (%) Frequency distribution (%) Particle diameter (μ m) Volume cumulative distribution (%) Frequency distribution (%)
 0.1  0.2  0.3  0.4  0.5  0.6  0.7  0.8  0.9  1.0  1.2  1.4  1.6  1.8  2.0  2.2  2.4  2.6  2.8  3.0  3.2   1.37   2.66   3.82   4.96   6.25   7.78   9.56   11.55   13.70   15.94   20.46   24.83   29.04   32.98   36.46   39.32   41.62   43.50   45.07   46.46   47.79   1.37   1.29   1.16   1.15   1.28   1.54   1.78   1.99   2.15   2.24   4.52   4.37   4.21   3.95   3.48   2.86   2.30   1.87   1.57   1.40   1.33   3.4   3.6   3.8   4.0   4.2   4.4   4.6   4.8   5.0   5.5   6.0   6.5   7.0   7.5   8.0   8.5   9.0   9.5   10   11   12   49.10   50.39   51.71   53.06   54.46   55.90   57.35   58.80   60.23   63.61   66.86   70.14   73.41   76.62   79.71   82.61   85.28   87.70   89.82   93.12   95.36   1.30   1.30   1.31   1.35   1.40   1.44   1.46   1.45   1.42   3.38   3.26   3.28   3.27   3.21   3.08   2.90   2.68   2.42   2.12   3.30   2.23   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   32   34   36   96.78   97.65   98.21   98.69   99.12   99.48   99.78   100.00   100.00   100.00   100.00   100.00   100.00   100.00   100.00   100.00   100.00   100.00   100.00   100.00   100.00   1.42   0.87   0.57   0.48   0.43   0.37   0.30   0.22   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00   0.00

Claims (8)

1, a kind of compound type regrind mill, its organic block, casing, grinding mechanism, feed arrangement, spreading disk and transmission device, grinding mechanism contains and is bearing in support upper millstone, grinding roller, centripetal tension ring, driver plate and vertical shaft, transmission device contains change-speed gearing, transverse axis and grinding roller belt pulley, it is characterized in that the casing upper end is connected to spiral case whirlwind cover, draught fan impeller is housed in the cover, and there are classification cage, impeller and classification cage concentric in the impeller below.
2, compound type regrind mill according to claim 1, it is characterized in that blower fan impeller shaft is hollow shaft, the middle part has the concentric shafts of classification cage to pass, stretch out on the blower fan impeller shaft upper end, is directly driven by vertical machine, and belt pulley is equipped with in the blower fan impeller shaft upper end, by another driven by motor vane rotary, the lower end extends below the draught fan impeller air inlet, and the classification cage is housed, and rotates under driven by motor.
3, compound type regrind mill according to claim 1, the blade that it is characterized in that draught fan impeller has two groups of linear leaf and short blades, linear leaf rises from impeller sleeve for approximate S shape, terminates in periphery, short blade is approximate half S shape, arise from the imaginary circle place between axle sleeve and the periphery, terminate in periphery, long and short blade all is fixed on the upper side board and lower side board of impeller, linear leaf also is fixed on the axle sleeve simultaneously, and upper side board and axle sleeve link fixing.
4, compound type regrind mill according to claim 1 is characterized in that grinding roller is positive wheel shape, is at least 3, is evenly distributed on the bull ring.
5, compound type regrind mill according to claim 1 is characterized in that the classification cage is the cage of an inversed taper platform shape, and the cage bar is reinforcing bar.
6, compound type regrind mill according to claim 1 is characterized in that the helix structure of spiral case whirlwind cover for gradually opening, and its outlet is connected with dust-precipitator or other classifying equipoments.
7, compound type regrind mill according to claim 1 is characterized in that spreading disk is to be installed in driver plate top and a disk of coaxial rotation with it, has rib on the card.
8, compound type regrind mill according to claim 1 is characterized in that feed pipe receives on the spreading disk of classification cage below by the groove that connects material.
CNB200610010650XA 2006-01-24 2006-01-24 Compound type regrind mill CN100364669C (en)

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Application Number Priority Date Filing Date Title
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CN100364669C CN100364669C (en) 2008-01-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108405076A (en) * 2018-03-06 2018-08-17 攀钢集团攀枝花钢钒有限公司 Vertical mill, carbonization blast furnace slag breaking method and system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2357828Y (en) * 1998-05-21 2000-01-12 李镇洋 Internal sorting loosening ultrafine pulverizer
CN2333442Y (en) * 1998-08-03 1999-08-18 四川威克科技公司 Centrifugal grinder
CN2389722Y (en) * 1999-09-15 2000-08-02 庞德明 Vertical regrind mill
CN1204983C (en) * 2002-11-24 2005-06-08 谭传德 High-efficient powder separator
CN2716565Y (en) * 2004-07-19 2005-08-10 吴伟 Low noise high pressure centrifugal blower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108405076A (en) * 2018-03-06 2018-08-17 攀钢集团攀枝花钢钒有限公司 Vertical mill, carbonization blast furnace slag breaking method and system

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