CN104001588B - Super fine vertical roller grinds - Google Patents
Super fine vertical roller grinds Download PDFInfo
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- CN104001588B CN104001588B CN201410279485.2A CN201410279485A CN104001588B CN 104001588 B CN104001588 B CN 104001588B CN 201410279485 A CN201410279485 A CN 201410279485A CN 104001588 B CN104001588 B CN 104001588B
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- mill
- separating machine
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- static
- back hopper
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Abstract
Super fine vertical roller mill provided by the invention, comprise housing and the mill being arranged at enclosure interior, static powder separating machine, back hopper, be arranged in multiple grinding rollers of mill upper surface, housing is provided with air inlet, the height of air inlet is lower than the height of mill, housing is provided with dynamic powder concentrator, the entrance of dynamic powder concentrator is communicated with enclosure interior, the outlet of dynamic powder concentrator connects air draft equipment, the height of dynamic powder concentrator is higher than the height of mill, static powder separating machine is fixed on the housing between dynamic powder concentrator and mill, the medium position of static powder separating machine is fixed in the import of back hopper, the outlet of back hopper is positioned at above mill.In the present invention, slightly bulky grain is through static powder separating machine, and energy ezpenditure is larger and fall into back hopper, substantially increases mill efficiency and grinding efficiency, reduces energy consumption.
Description
Technical field
The present invention relates to super fine vertical roller mill field, be specifically related to the static powder selection device of super fine vertical roller mill.
Background technology
Vertical roller grinder is the grinding device integrating grinding, select powder, and when there being drying requirement, it also has drying function.At present, select powder function mainly to realize by dynamic powder concentrator, and by regulating rotating speed and the air quantity of dynamic powder selection device rotor, the fineness of grinding finished product can be controlled.
As shown in Figure 6, a kind of vertical roller grinder of being grouped in conjunction with the powder selecting part that the dynamic powder concentrator 5' of multiple minor diameter forms by grinding part of super fine vertical roller mill.Superfine powder sorting machine will select superfine powder product, selected powder will have certain fineness, when but grinding roller 3' and mill 2' mills, material is to higher fineness, mixed by the material that grinds and air, form fluidization, make grinding roller 3 cannot keep under control material, be difficult to carry out grinding, reduce mill efficiency, thus reduce super fine vertical roller mill mill efficiency on the whole.
In addition, back hopper 7' inlet diameter is less than housing 1' internal diameter, so fall within back hopper 7' import not by the thicker powder that dynamic powder concentrator 5' selects, drop on mill through back hopper 7'; And fall within space, housing 1' internal perisporium place (major part is positioned at beyond back hopper 7' import) not by thicker powder that dynamic powder concentrator 5' selects, in the process fallen, be subject to the impact of ascending air, only have particle enough large can drop to mill 2', remainder floats aloft, increase ascending air resistance, increase energy consumption.
Summary of the invention
The object of this invention is to provide super fine vertical roller mill, solve one or more in above-mentioned prior art problem.
According to an aspect of the present invention, the super fine vertical roller mill provided, comprise housing and the mill being arranged at enclosure interior, static powder separating machine, back hopper, be arranged in multiple grinding rollers of mill upper surface, housing is provided with air inlet, the height of air inlet is lower than the height in pan-milling portion, housing is provided with dynamic powder concentrator, the entrance of dynamic powder concentrator is communicated with enclosure interior, the outlet of dynamic powder concentrator connects air draft equipment, the height of dynamic powder concentrator is higher than the height of mill, static powder separating machine is fixed on the housing between dynamic powder concentrator and mill, the medium position of static powder separating machine is fixed in the import of back hopper, the outlet of back hopper is positioned at above mill, the number of dynamic powder concentrator is multiple, and the entrance of dynamic powder concentrator is distributed in the top of housing.
Super fine vertical roller mill provided by the invention, in space between dynamic powder concentrator and mill, static powder separating machine is set, the space between dynamic powder concentrator and mill is divided into the Xuan Fenhuili district being positioned at static powder separating machine top and the grinding district being positioned at static powder separating machine bottom.In work, raw material enters mill upper surface through feeding-passage, and mill rotates under the effect of power set, and drives grinding roller to roll at mill upper surface passively.What mill peripheral part sent into by raw material by mill continuously that rotate rolls district, carries out grinding work.Meanwhile, the air draft equipment on static powder separating machine top constantly provides negative pressure to enclosure interior, and the circumference at the internal perisporium place of housing forms air-flow from bottom to top.The powder that above-mentioned air-flow from bottom to top carries after the rolling of mill peripheral part moves upward, and forms dust stream from bottom to top; In dust stream slightly bulky grain through static powder separating machine, energy ezpenditure is larger, take advantage of a situation in falling within above back hopper space, and fall into back hopper at the steady air flow at back hopper place, middle part, and the district that rolls sending into mill peripheral part by back hopper carries out abrasive dust work again; Granule qualified in dust stream is through static powder separating machine, and energy ezpenditure is smaller, enters dynamic powder concentrator subsequently and further selects powder work.
The present invention selects powder owing to adding one-level static state, improves the powder fineness into dynamic powder concentrator, can reduce the fineness of grinding roller and grinding disk grinding like this, alleviate grinding material Fluidization, improve overall mill efficiency.
In some embodiments, static powder separating machine is cylindric static powder separating machine, and comprise upper holder, lower fixed frame and multiple blade, upper holder is fixed in blade one end, and the blade other end is fixed on lower fixed frame, and upper holder is fixed on housing internal perisporium.
In some embodiments, blade place plane and blade are acute angle at the tangential face angulation of upper holder installation place.The blade of oblique setting, gives the energy dropoff effect that slightly bulky grain one is larger.
In some embodiments, static powder separating machine comprises multiple frustum drums of stacked setting, and frustum drum is taper type, and frustum drum comprises taper sidewall, bigger diameter end and miner diameter end, the bigger diameter end of frustum drum is arranged all upward, and the bigger diameter end being positioned at the frustum drum of position, the top is fixed on housing internal perisporium.
In some embodiments, the position of housing installation static powder separating machine is provided with wide diameter portion.Housing dilatation outside static powder separating machine, provides an ascending air designated lane, makes ascending air and whereabouts meal separately.The import of dynamic powder concentrator and the outlet of static powder separating machine are on the straight line of a vertical direction, ensure that dust qualified in dust stream is at the entrance entering dynamic powder concentrator of taking advantage of a situation after static powder separating machine, wide diameter portion provides special rising air flue, make ascending air and whereabouts meal separately, reduce the resistance of ascending air, reduce energy consumption.
In some embodiments, the cross section, footpath of wide diameter portion progressively reduces after the upper edge hole of static powder separating machine first progressively increases downwards.The cross section, footpath of wide diameter portion progressively reduces after the upper edge hole of static powder separating machine first progressively increases downwards.
In some embodiments, the entry shape of back hopper coordinates the lower to mouth-shaped of static powder separating machine, and the import size of back hopper equals the internal diameter that housing does not arrange wide diameter portion place, and the import of back hopper is arranged at the lower bead place of static powder separating machine.Back hopper back cut diameter equals non-dilatation portion housing inner diameter, makes the meal after selecting powder all fall into back hopper.
In some embodiments, multiple dynamic powder concentrator is uniformly distributed along the girth of housing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the super fine vertical roller mill of a kind of embodiment provided by the invention;
Fig. 2 is the structural representation of the static powder separating machine of the super fine vertical roller mill of a kind of embodiment provided by the invention;
Fig. 3 is the sectional view that Fig. 2 illustrates the A-A place of static powder separating machine;
Fig. 4 is the structural representation of the static powder separating machine of the super fine vertical roller mill of another kind of embodiment provided by the invention;
Fig. 5 is the sectional view that Fig. 4 illustrates the B-B place of static powder separating machine;
Fig. 6 is the super fine vertical roller mill shown in background technology.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in more detail.
As shown in Figure 1, the invention provides super fine vertical roller mill, the housing 1 comprising tubular and the mill 2 being arranged at housing 1 inside, static powder separating machine 6, back hopper 7, be arranged in multiple grinding rollers 3 of mill 2 upper surface.Multiple grinding roller 3 is uniform in the outer circumference of mill 2 upper surface.
Housing 1 offers air inlet 4 lower than the position of the height in grinding portion, mill 2 top, housing 1 is provided with dynamic powder concentrator 5 higher than the position of the height of mill 2, the rotor inlet of dynamic powder concentrator 5 is communicated with housing 1 inside, and the outlet of dynamic powder concentrator 5 rotor connects air draft equipment.The number of common dynamic powder concentrator 5 is multiple, and multiple dynamic powder concentrator 5 is uniformly distributed along the girth of housing 1 above housing 1, and the rotor inlet of multiple dynamic powder concentrator 5 is uniformly distributed in housing 1 internal perisporium place.Further, dynamic powder concentrator 5 is preferably horizontal is installed on housing 1.
In the present embodiment, housing 1 is tubular, and preferred multiple dynamic powder concentrator 5 is uniformly distributed ringwise, and the import of multiple dynamic powder concentrator 5 rotor is also uniformly distributed in the internal perisporium place of housing 1 ringwise.The outlet of multiple dynamic powder concentrator 5 rotor completes suction by single air draft equipment.
The present invention is not limited with the housing 1 of tubular, and other such as shapes such as square, regular hexagon also should belong within protection scope of the present invention.
In space between dynamic powder concentrator 5 and mill 2, the present invention also has static powder separating machine 6, and the medium position of static powder separating machine 6 is fixed in the import of back hopper 7, and the outlet of back hopper 7 is positioned at above mill 2.
Super fine vertical roller mill provided by the invention, static powder separating machine 6 is set in the space between dynamic powder concentrator 5 and mill 2, the space between dynamic powder concentrator 5 and mill 2 is divided into the Xuan Fenhuili district 8 being positioned at static powder separating machine 6 top and the abrasive dust district 9 being positioned at static powder separating machine 6 bottom.
In work, raw material enters mill 2 upper surface through feeding-passage 10, and mill 2 rotates under the effect of power set, and drives grinding roller 3 to roll at mill 2 upper surface passively.What mill 2 peripheral part sent into by raw material by mill 2 continuously that rotate rolls district, carries out abrasive dust work.Meanwhile, the air draft equipment on static powder separating machine 6 top provides negative pressure constantly to housing 1 inside, and the circumference at the internal perisporium place of housing 1 forms air-flow from bottom to top.The powder that above-mentioned air-flow from bottom to top carries after the rolling of mill 2 peripheral part moves upward, and forms dust stream from bottom to top; In dust stream slightly bulky grain when through static powder separating machine 6, energy ezpenditure is larger, take advantage of a situation in falling within above back hopper 7 space, and fall into back hopper 7 at the steady air flow at middle part back hopper 7 place, and the district that rolls sending into mill 2 peripheral part by back hopper 7 carries out abrasive dust work again; Granule qualified in dust stream is when through static powder separating machine 6, and energy ezpenditure is smaller, enters dynamic powder concentrator 5 subsequently and further selects powder work.
As shown in Figure 2,3, as a kind of scheme of static powder separating machine 6, the present embodiment adopts cylindric static powder separating machine, cylindric static powder separating machine comprises upper holder 61, lower fixed frame 62 and multiple blade 63, blade 63 one end is welded in upper holder 61, blade 63 other end is welded in lower fixed frame 62, and upper holder 61 is fixed on housing 1 internal perisporium through gripper shoe, and blade 63 place plane and blade 63 are acute angle at the tangential face angulation α of upper holder 61 installation place.
Under the embodiment of the housing 1 of tubular, upper holder 61 and lower fixed frame 62 are also preferably circular.The back hopper 7 of taper is preferably coaxially plugged in cylindric static powder separating machine, and the import bolt of back hopper 7 is fixed on cylindric static powder separating machine, and the outlet of back hopper 7 is arranged at above mill 2.Back hopper 7 is welded with the feeding-passage 10 towards housing 1 outside.
As shown in Figure 4,5, as the another kind of scheme of static powder separating machine 6, the present invention can also adopt another kind of static powder separating machine 6, it comprises multiple frustum drums 69 of stacked setting, frustum drum 69 is in taper type, frustum drum 69 comprises taper sidewall 68, bigger diameter end 67 and miner diameter end 66, and the bigger diameter end 67 of frustum drum 69 is arranged all upward, and bigger diameter end 67 bolt being positioned at the frustum drum 69 of position, the top is fixed on housing 1 internal perisporium.
The present invention does not limit the fixed form between adjacent frustum drum 69, the fixed leg longitudinally arranged can be adopted to be welded and fixed multiple frustum drum 69 in turn reach, also can adopt between adjacent frustum drum 69 and be fastened by bolts, but should keep, between adjacent frustum drum 69, there is enough gap spaces.Further, the position that housing 1 installs static powder separating machine 6 is provided with wide diameter portion 65, and the cross section, footpath of wide diameter portion 65 presents the trend progressively reduced after elder generation progressively increases downwards from the upper edge hole of static powder separating machine 6.Further again, wide diameter portion 65 is maximum in the cross section, footpath of the lower bead equal-height position of static powder separating machine 6.
About the trend increased or reduce, should do corresponding correction according to the fluidised form of internal gas flow dust, the present invention does not do too much restriction.The variation tendency that the present embodiment is preferably linear, forms the wide diameter portion 65 of folding planar, in conception of the present invention, can also mould wide diameter portion 65 that is streamlined or other smooth surfaces.
Import due to dynamic powder concentrator 5 is arranged at the internal perisporium place of housing 1, the setting of wide diameter portion 65, can make the outlet of the import of dynamic powder concentrator 5 and static powder separating machine 6 on the straight line of a vertical direction, ensure that dust qualified in dust stream enters the entrance of dynamic powder concentrator 5 taking advantage of a situation after static powder separating machine 6.
In addition, on the basis of static powder separating machine 6 pairs of dust screenings, wide diameter portion 65 can give the trend when dust air-flow enters Xuan Fenhuili district 8 to the motion of back hopper 7 place, improves slightly bulky grain and the slightly short grained effect be separated, and then improve back grain effect, promote grinding efficiency.
In addition, in the technical scheme with wide diameter portion 65, the entry shape of back hopper 7 can coordinate the lower to mouth-shaped of static powder separating machine 6, the import size of back hopper 7 equals the internal diameter size that housing 1 does not arrange wide diameter portion 65 place, and the import outer bolted of back hopper 7 is in the lower bead of static powder separating machine 6.When having the technical scheme of wide diameter portion 65, the present invention proposes a kind of prioritization scheme expanding the import of back hopper 7, and back hopper 7 is installed on the lower bead place of static powder separating machine 6.Like this, optimize internal gas flow fluidised form further, improve back grain effect, promote grinding efficiency.
The lower bead of static powder separating machine 6 can be the lower fixed frame 62 of cylindric static powder separating machine, also can be the miner diameter end 66 of the frustum drum 69 of the bottom.
In addition, the present invention does not have restricted to the fastening means of the import of back hopper 7 and the lower bead of static powder separating machine 6, the lower bead place that the present invention is arranged at static powder separating machine 6 with the import of back hopper 7 is as the criterion, certainly the import of back hopper 7 can also be adopted to be fixed on housing 1 internal perisporium by reinforcing bar or gripper shoe, namely, reinforcing bar or gripper shoe one end are welded in housing 1 internal perisporium, and the other end is welded in the import outer of back hopper 7.Between the upper edge hole of static powder separating machine 6 and housing 1 internal perisporium, sealing ring 11 is also set.
More than statement is only preferred embodiment of the present invention, and it should be pointed out that to those skilled in the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these also should be considered as within protection scope of the present invention.
Claims (4)
1. super fine vertical roller mill, it is characterized in that, comprise housing (1) and be arranged at the inner mill (2) of described housing (1), static powder separating machine (6), back hopper (7), be arranged in multiple grinding rollers (3) of described mill (2) upper surface, described housing (1) is provided with air inlet (4), the height of described air inlet (4) is lower than the height of described mill (2) grinding section, described housing (1) is provided with dynamic powder concentrator (5), the entrance of described dynamic powder concentrator (5) is communicated with described housing (1) inside, the outlet of described dynamic powder concentrator (5) connects air draft equipment, the height of described dynamic powder concentrator (5) is higher than the height of described mill (2), described static powder separating machine (6) is fixed on the housing (1) between described dynamic powder concentrator (5) and described mill (2), the medium position of described static powder separating machine (6) is fixed in the import of described back hopper (7), the outlet of described back hopper (7) is positioned at described mill (2) top, the number of described dynamic powder concentrator (5) is multiple, and the entrance of described dynamic powder concentrator (5) is distributed in the top of described housing (1),
Described static powder separating machine (6) is cylindric static powder separating machine, comprise upper holder (61), lower fixed frame (62) and multiple blade (63), fixed frame (61) is fixed in described blade (63) one end, described blade (63) other end is fixed on described lower fixed frame (62), and fixed frame (61) is fixed on described housing (1) internal perisporium;
Described blade (63) place plane and described blade (63) are acute angle at the tangential face angulation of fixed frame (61) installation place;
Multiple described dynamic powder concentrator (5) is uniformly distributed along the girth of described housing (1).
2. super fine vertical roller mill according to claim 1, it is characterized in that, the position that described housing (1) installs described static powder separating machine (6) is provided with wide diameter portion (65).
3. super fine vertical roller mill according to claim 2, is characterized in that, the cross section, footpath of described wide diameter portion (65) progressively reduces after the upper edge hole of described static powder separating machine (6) first progressively increases downwards.
4. super fine vertical roller mill according to claim 3, it is characterized in that, the entry shape of described back hopper (7) coordinates the lower to mouth-shaped of described static powder separating machine (6), the import size of described back hopper (7) equals the internal diameter that described housing (1) does not arrange wide diameter portion place, and the import of described back hopper (7) is arranged at the lower bead place of described static powder separating machine (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410279485.2A CN104001588B (en) | 2014-06-20 | 2014-06-20 | Super fine vertical roller grinds |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410279485.2A CN104001588B (en) | 2014-06-20 | 2014-06-20 | Super fine vertical roller grinds |
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| CN104001588A CN104001588A (en) | 2014-08-27 |
| CN104001588B true CN104001588B (en) | 2016-04-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170244A (en) * | 2015-09-02 | 2015-12-23 | 江苏富勒水泵系统有限公司 | Superfine powder-separation vertical roller mill |
| CN106563531A (en) * | 2016-11-04 | 2017-04-19 | 合肥中亚建材装备有限责任公司 | Ash hopper skirt type aggregate discharge device of vertical roller mill |
| CN112536083A (en) * | 2020-12-05 | 2021-03-23 | 陈必超 | Preparation and processing method of mineral admixture for concrete |
| CN115888908B (en) * | 2021-09-30 | 2023-10-03 | 北京喜诺德科技有限公司 | Low-abrasion anti-blocking external circulation vertical roller mill system and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122263A (en) * | 1994-07-06 | 1996-05-15 | 勒舍有限公司 | Mill classifier |
| CN1660502A (en) * | 2004-02-26 | 2005-08-31 | 福斯特能源公司 | Method and appts.to sort particles flowing from verticle grinder |
| CN101380606A (en) * | 2007-09-06 | 2009-03-11 | 上海重型机器厂有限公司 | Bowl type half-speed grinding mill |
| JP2009297597A (en) * | 2008-06-10 | 2009-12-24 | Ihi Corp | Vertical roller mill |
| JP2012206047A (en) * | 2011-03-30 | 2012-10-25 | Ihi Corp | Vertical roller mill |
| CN203899672U (en) * | 2014-06-20 | 2014-10-29 | 张嘉程 | Ultra-thin vertical roll mill |
-
2014
- 2014-06-20 CN CN201410279485.2A patent/CN104001588B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122263A (en) * | 1994-07-06 | 1996-05-15 | 勒舍有限公司 | Mill classifier |
| CN1660502A (en) * | 2004-02-26 | 2005-08-31 | 福斯特能源公司 | Method and appts.to sort particles flowing from verticle grinder |
| CN101380606A (en) * | 2007-09-06 | 2009-03-11 | 上海重型机器厂有限公司 | Bowl type half-speed grinding mill |
| JP2009297597A (en) * | 2008-06-10 | 2009-12-24 | Ihi Corp | Vertical roller mill |
| JP2012206047A (en) * | 2011-03-30 | 2012-10-25 | Ihi Corp | Vertical roller mill |
| CN203899672U (en) * | 2014-06-20 | 2014-10-29 | 张嘉程 | Ultra-thin vertical roll mill |
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| CN104001588A (en) | 2014-08-27 |
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