CN104001588A - Superfine vertical roller mill - Google Patents
Superfine vertical roller mill Download PDFInfo
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- CN104001588A CN104001588A CN201410279485.2A CN201410279485A CN104001588A CN 104001588 A CN104001588 A CN 104001588A CN 201410279485 A CN201410279485 A CN 201410279485A CN 104001588 A CN104001588 A CN 104001588A
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- separating machine
- mill
- housing
- powder concentrator
- static
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Abstract
The invention provides a superfine vertical roller mill which comprises a shell, a millstone, a static powder concentrator, a feedback hopper and a plurality of grinding rollers, wherein the millstone, the static powder concentrator, the feedback hopper and the grinding rollers are arranged inside the shell, and the grinding rollers are arranged on the upper surface of the millstone. A gas inlet is formed in the shell, and the gas inlet is lower than the millstone. A dynamic powder concentrator is arranged on the shell. An inlet of the dynamic powder concentrator is communicated with the interior of the shell. An outlet of the dynamic powder concentrator is connected with a gas suction device. The dynamic powder concentrator is higher than the millstone. The static powder concentrator is fixed to the portion, between the dynamic powder concentrator and the millstone, of the shell. An inlet of the feedback hopper is fixed to the middle of the static powder concentrator. An outlet of the feedback hopper is located above the millstone. Large particles in the superfine vertical roll mill fall back into the feedback hopper due to large energy consumption when passing through the static powder concentrator, and grinding efficiency and powder concentration efficiency are greatly improved, and energy consumption is reduced.
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 that integrates grinding, selects powder, and when having drying requirement, it also has drying function.At present, select powder function mainly by dynamic powder concentrator, to realize, and can, by regulating dynamic powder selection device rotor and rotating speed and air quantity, control the fineness of grinding finished product.
As shown shown in 6, a kind of vertical roller grinder that the powder selecting part that super fine vertical roller mill is comprised of in conjunction with the dynamic powder concentrator 5' of a plurality of minor diameters grinding part is grouped into.Superfine powder sorting machine will be selected superfine powder product, selected powder will have certain fineness, when but grinding roller 3' and mill 2' mill, material is to higher fineness, the material and the air that are ground mix, form fluidization, make grinding roller 3 cannot keep under control material, be difficult to carry out grinding, reduce mill efficiency, thereby reduce on the whole super fine vertical roller mill mill efficiency.
In addition, back hopper 7' inlet diameter is less than housing 1' internal diameter, falls within so the thicker powder of not selected by dynamic powder concentrator 5' of back hopper 7' import, through back hopper 7', drops on mill; And fall within the thicker powder of not selected by dynamic powder concentrator 5' of space, housing 1' internal perisporium place (major part is positioned at beyond back hopper 7' import), in the process falling, be subject to the impact of ascending air, only have that particle is 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 providing, comprise housing and the mill that is arranged at enclosure interior, static powder separating machine, back hopper, be arranged in a plurality of grinding rollers of mill upper surface, housing is provided with air inlet, the height of air inlet is lower than the height of 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 mill top, the number of dynamic powder concentrator is a plurality of, 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 that is positioned at static powder separating machine top and the grinding district that is 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 at mill upper surface, to roll passively.The district that rolls of mill peripheral part sent into raw material continuously by the mill of rotation, carries out grinding work.Meanwhile, the air draft equipment on static powder separating machine top constantly provides negative pressure to enclosure interior, and at the circumferential formation at the internal perisporium place of housing air-flow from bottom to top.Above-mentioned air-flow from bottom to top carries through the powder after the rolling of mill peripheral part and moves upward, and forms dust stream from bottom to top; In dust stream slightly bulky grain when through static powder separating machine, energy consumption rate is larger, take advantage of a situation and fall within the space of back hopper top, and fall into back hopper at the steady air flow at back hopper place, middle part, and again carry out abrasive dust work by the district that rolls that back hopper is sent into mill peripheral part; Granule qualified in dust stream is when through static powder separating machine, and energy consumes smaller, enters subsequently dynamic powder concentrator and further selects powder work.
The present invention selects powder owing to having increased one-level static state, has improved the powder fineness that enters dynamic powder concentrator, can reduce like this fineness of grinding roller and grinding disk grinding, alleviates grinding material fluidization degree, improves whole mill efficiency.
In some embodiments, static powder separating machine is cylindric static powder separating machine, comprises upper holder, lower fixed frame and a plurality of blade, and 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 slightly larger energy abated effect of bulky grain.
In some embodiments, static powder separating machine comprises a plurality of 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 all arranges upward, and the bigger diameter end that is 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, guarantee that dust qualified in dust stream enters the entrance of dynamic powder concentrator taking advantage of a situation after static powder separating machine, wide diameter portion provides special-purpose 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 not dilatation portion housing internal diameter, makes to select the meal after powder all to fall into back hopper.
In some embodiments, a plurality of dynamic powder concentrators are 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 static powder separating machine of the super fine vertical roller mill of a kind of embodiment provided by the invention;
Fig. 3 is the cutaway view that Fig. 2 illustrates the A-A place of static powder separating machine;
Fig. 4 is the structural representation of static powder separating machine of the super fine vertical roller mill of another kind of embodiment provided by the invention;
Fig. 5 is the cutaway 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.
The specific embodiment
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, comprise the housing 1 of tubular and be arranged at housing 1 inside mill 2, static powder separating machine 6, back hopper 7, be arranged in a plurality of grinding rollers 3 of mill 2 upper surface.A plurality of grinding rollers 3 are outer circumferentially uniform mill 2 upper surfaces.
Housing 1 offers air inlet 4 lower than the position of the height of mill 2 top grinding portions, housing 1 is provided with dynamic powder concentrator 5 higher than the position of the height of mill 2, the rotor entrance of dynamic powder concentrator 5 is communicated with housing 1 inside, and the outlet of dynamic powder concentrator 5 rotors connects air draft equipment.The number of common dynamic powder concentrator 5 is a plurality of, and a plurality of dynamic powder concentrators 5 are uniformly distributed along the girth of housing 1 above housing 1, and a plurality of dynamic powder concentrator 5 rotor inlets are uniformly distributed in housing 1 internal perisporium place.And, the preferred horizontal housing 1 that is installed on of dynamic powder concentrator 5.
In the present embodiment, housing 1 is tubular, and preferred a plurality of dynamic powder concentrators 5 are uniformly distributed ringwise, and the import of a plurality of dynamic powder concentrator 5 rotors is also uniformly distributed in the internal perisporium place of housing 1 ringwise.The outlet of a plurality of dynamic powder concentrator 5 rotors completes suction by single air draft equipment.
The present invention is not limited with the housing 1 of tubular, within other shapes such as square, regular hexagon also should belong to 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 mill 2 tops.
Super fine vertical roller mill provided by the invention, in space between dynamic powder concentrator 5 and mill 2, static powder separating machine 6 is set, the space between dynamic powder concentrator 5 and mill 2 is divided into the Xuan Fenhuili district 8 that is positioned at static powder separating machine 6 tops and the abrasive dust district 9 that is positioned at static powder separating machine 6 bottoms.
In work, raw material enters mill 2 upper surfaces through feeding-passage 10, and mill 2 rotates under the effect of power set, and drives grinding roller 3 at mill 2 upper surfaces, to roll passively.The district that rolls of mill 2 peripheral parts sent into raw material continuously by the mill 2 of rotation, carries out abrasive dust work.Meanwhile, the air draft equipment on static powder separating machine 6 tops provides negative pressure constantly to housing 1 inside, and at the circumferential formation at the internal perisporium place of housing 1 air-flow from bottom to top.Above-mentioned air-flow from bottom to top carries through the powder after the rolling of mill 2 peripheral parts and moves upward, and forms dust stream from bottom to top; In dust stream slightly bulky grain when through static powder separating machine 6, energy consumption rate is larger, take advantage of a situation and fall within the space of back hopper 7 tops, and fall into back hopper 7 at the steady air flow at middle part back hopper 7 places, and again carry out abrasive dust work by the district that rolls that back hopper 7 is sent into mill 2 peripheral parts; Granule qualified in dust stream is when through static powder separating machine 6, and energy consumes smaller, enters subsequently dynamic powder concentrator 5 and further selects powder work.
As shown in Figure 2,3, a kind of scheme as 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 a plurality of blade 63, blade 63 one end are welded in upper holder 61, blade 63 other ends are welded in lower fixed frame 62, and upper holder 61 is fixed on housing 1 internal perisporium through gripper shoe, and blade 63 place planes and blade 63 are acute angle at the tangential face angulation α of upper holder 61 installation places.
Under the embodiment of the housing 1 of tubular, upper holder 61 and lower fixed frame 62 are also preferably circle.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 mill 2 tops.Back hopper 7 is welded with towards the feeding-passage 10 of housing 1 outside.
As shown in Figure 4,5, another kind of scheme as static powder separating machine 6, the present invention can also adopt another kind of static powder separating machine 6, it comprises a plurality of frustum drums 69 of stacked setting, frustum drum 69 is 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 all arranges upward, and bigger diameter end 67 bolts that are positioned at the frustum drum 69 of position, the top are fixed on housing 1 internal perisporium.
The present invention does not limit the fixed form between adjacent frustum drum 69, can adopt the fixed leg of longitudinal setting to be welded and fixed in turn a plurality of frustum drums 69 reaches, also can adopt between adjacent frustum drum 69 by bolted, but should keep thering is enough gap spaces between adjacent frustum drum 69.Further, the position that housing 1 is installed static powder separating machine 6 is provided with wide diameter portion 65, and the cross section, footpath of wide diameter portion 65 presents first from the upper edge hole of static powder separating machine 6 trend progressively reducing after progressively increase downwards.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 that increases 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 present embodiment is the variation tendency of linearity preferably, forms the planar wide diameter portion 65 of folding, in conception of the present invention, can also mould the wide diameter portion 65 of streamlined or other smooth surfaces.
Because the import of dynamic powder concentrator 5 is arranged at the internal perisporium place of housing 1, the setting of wide diameter portion 65, can enter the entrance of dynamic powder concentrator 5 taking advantage of a situation after static powder separating machine 6 so that the outlet of the import of dynamic powder concentrator 5 and static powder separating machine 6 on the straight line of a vertical direction, guarantees dust qualified in dust stream.
In addition, on the basis of 6 pairs of dust screenings of static powder separating machine, wide diameter portion 65 can be given the trend of moving to back hopper 7 places when dust air-flow enters Xuan Fenhuili district 8, improves slightly bulky grain and slightly short grained separated effect, and then improve back grain effect, promote grinding efficiency.
In addition, in thering is the technical scheme of 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 places, and the import outer bolted of back hopper 7 is in the lower bead of static powder separating machine 6.When thering is the technical scheme of wide diameter portion 65, the present invention proposes a kind of prioritization scheme that expands the import of back hopper 7, and back hopper 7 is installed on to the lower bead place of static powder separating machine 6.Like this, further optimize internal gas flow fluidised form, improved time 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, can be also 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 lower bead of the import of back hopper 7 and 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 can also adopt the import of back hopper 7 to be fixed on housing 1 internal perisporium by reinforcing bar or gripper shoe,, 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 optimal way of the present invention, 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, within these also should be considered as protection scope of the present invention.
Claims (8)
1. super fine vertical roller grinds, 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 a plurality of grinding rollers of described mill (2) upper surface (3), described housing (1) is provided with air inlet (4), the height of described air inlet (4) is lower than the mill height of portion of described mill (2), 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 a plurality of, and the entrance of described dynamic powder concentrator (5) is distributed in the top of described housing (1).
2. super fine vertical roller according to claim 1 grinds, it is characterized in that, described static powder separating machine (6) is cylindric static powder separating machine, comprise upper holder (61), lower fixed frame (62) and a plurality of 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.
3. super fine vertical roller mill according to claim 2, is characterized in that, described blade (63) place plane and described blade (63) are acute angle at the tangential face angulation of fixed frame (61) installation place.
4. super fine vertical roller according to claim 1 grinds, it is characterized in that, described static powder separating machine (6) comprises a plurality of frustum drums (69) of stacked setting, described frustum drum (69) is taper type, described frustum drum (69) comprises taper sidewall (68), bigger diameter end (67) and miner diameter end (66), the bigger diameter end (67) of described frustum drum (69) all arranges upward, and the bigger diameter end (67) that is positioned at the frustum drum (69) of position, the top is fixed on described housing (1) internal perisporium.
5. super fine vertical roller mill according to claim 1, is characterized in that, the position that described housing (1) is installed described static powder separating machine (6) is provided with wide diameter portion (65).
6. super fine vertical roller mill according to claim 5, 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.
7. super fine vertical roller according to claim 5 grinds, 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).
8. super fine vertical roller mill according to claim 1, is characterized in that, a plurality of described dynamic powder concentrators (5) are uniformly distributed along the girth of described housing (1).
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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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| 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 true CN104001588A (en) | 2014-08-27 |
| CN104001588B CN104001588B (en) | 2016-04-20 |
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Cited By (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 |
| CN115888908A (en) * | 2021-09-30 | 2023-04-04 | 北京喜诺德科技有限公司 | Low-wear anti-blocking external circulation vertical roller mill system and application thereof |
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| 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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2014
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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 |
Cited By (5)
| 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 |
| CN115888908A (en) * | 2021-09-30 | 2023-04-04 | 北京喜诺德科技有限公司 | Low-wear anti-blocking external circulation vertical roller mill system and application thereof |
| 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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|---|---|
| CN104001588B (en) | 2016-04-20 |
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