CN203899672U - Ultra-thin vertical roll mill - Google Patents

Ultra-thin vertical roll mill Download PDF

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Publication number
CN203899672U
CN203899672U CN201420333491.7U CN201420333491U CN203899672U CN 203899672 U CN203899672 U CN 203899672U CN 201420333491 U CN201420333491 U CN 201420333491U CN 203899672 U CN203899672 U CN 203899672U
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CN
China
Prior art keywords
separating machine
housing
mill
static
powder separating
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Expired - Fee Related
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CN201420333491.7U
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Chinese (zh)
Inventor
张嘉程
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张嘉程
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Priority to CN201420333491.7U priority Critical patent/CN203899672U/en
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Abstract

The utility model provides an ultra-thin vertical roll mill. The ultra-thin vertical roll mill comprises a shell, a milling disc in the shell, a static separator, a return hopper, and a plurality of milling rolls on the upper surface of the milling disc, wherein the shell is provided with an air inlet which is lower than the milling disc; the shell is provided with dynamic separators, the inlets of the dynamic separators are communicated with the interior of the shell, the outlets of the dynamic separators are connected with air suction equipment, and the dynamic separators are higher than the milling disc; the static separator is fixed on the shell and between the dynamic separators and the milling disc; the inlet of the return hopper is fixed in the middle of the static separator, and the outlet of the return hopper is located above the milling disc. According to the ultra-thin vertical roll mill provided by the utility model, large particles fall into the return hopper due to high energy consumption while passing through the static separator, thus greatly increasing the milling efficiency and the separation efficiency, and reducing the energy consumption.

Description

Super fine vertical roller mill
Technical field
The utility model relates to super fine vertical roller mill field, is 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 in the time having drying requirement, it also has drying function.At present, select powder function mainly to realize by dynamic powder concentrator, and can, by regulating dynamic powder selection device rotor and rotating speed and air quantity, control the fineness of grinding finished product.
As shown in Figure 6, super fine vertical roller grinds a kind of vertical roller grinder that the powder selecting part that is made up of in conjunction with the dynamic powder concentrator 5' of multiple 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, drops on mill through back hopper 7'; 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.
Utility model content
The purpose of this utility model is to provide super fine vertical roller mill, solves one or more in above-mentioned prior art problem.
According to an aspect of the present utility model, 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 the multiple 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 multiple, and the entrance of dynamic powder concentrator is distributed in the top of housing.
The super fine vertical roller mill that the utility model provides, 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 to roll at mill upper surface 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 utility model 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 overall mill efficiency.
In some embodiments, static powder separating machine is cylindric static powder separating machine, comprises upper holder, lower fixed frame and multiple 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 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 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, ensure 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 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 housing and do not arrange the internal diameter at 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, multiple dynamic powder concentrators are uniformly distributed along the girth of housing.
Brief description of the drawings
The structural representation of the super fine vertical roller mill of a kind of embodiment that Fig. 1 provides for the utility model;
The structural representation of the static powder separating machine of the super fine vertical roller mill of a kind of embodiment that Fig. 2 provides for the utility model;
Fig. 3 is the cutaway view that Fig. 2 illustrates the A-A place of static powder separating machine;
The structural representation of the static powder separating machine of the super fine vertical roller mill of the another kind of embodiment that Fig. 4 provides for the utility model;
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.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model is described in more detail.
As shown in Figure 1, the utility model 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 the multiple grinding rollers 3 of mill 2 upper surface.Multiple 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 multiple, and multiple dynamic powder concentrators 5 are uniformly distributed along the girth of housing 1 above housing 1, and multiple 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 multiple dynamic powder concentrators 5 are uniformly distributed ringwise, and the import of multiple dynamic powder concentrator 5 rotors is also uniformly distributed in the internal perisporium place of housing 1 ringwise.The outlet of multiple dynamic powder concentrator 5 rotors completes suction by single air draft equipment.
The utility model is not limited with the housing 1 of tubular, within other also should belong to protection domain of the present utility model such as the shape such as square, regular hexagon.
In space between dynamic powder concentrator 5 and mill 2, the utility model 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.
The super fine vertical roller mill that the utility model provides, 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 to roll at mill 2 upper surfaces 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, 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 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, as the another kind of scheme of static powder separating machine 6, the utility model can also adopt another kind of static powder separating machine 6, it comprises multiple 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 utility model 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 multiple 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 the trend progressively reducing after progressively increase downwards from the upper edge hole of static powder separating machine 6.Further again, wide diameter portion 65 is in the cross section, footpath of the lower bead equal-height position of static powder separating machine 6 maximum.
About the trend that increases or reduce, should do corresponding correction according to the fluidised form of internal gas flow dust, the utility model 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 utility model, 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 make the import of dynamic powder concentrator 5 and the outlet of 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 dust being screened at static powder separating machine 6, wide diameter portion 65 can be given the trend of moving to back hopper 7 places in the time that dust air-flow enters Xuan Fenhuili district 8, improves slightly bulky grain and the slightly short grained effect separating, and then improve back grain effect, promote grinding efficiency.
In addition, having in 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 housing 1 and does not arrange the internal diameter size at 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.In the time thering is the technical scheme of wide diameter portion 65, the utility model proposes a kind of prioritization scheme of the import that expands 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 utility model not fastening means of the lower bead of the import to back hopper 7 and static powder separating machine 6 has restricted, the lower bead place that the utility model 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 utility model; it should be pointed out that to those skilled in the art, do not departing under the prerequisite of the utility model creation design; can also make some distortion and improvement, within these also should be considered as protection domain of the present utility model.

Claims (8)

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 the multiple 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 multiple, and the entrance of described dynamic powder concentrator (5) is distributed in the top of described housing (1).
2. super fine vertical roller mill according to claim 1, 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 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.
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 mill according to claim 1, it is characterized in that, described static powder separating machine (6) comprises multiple 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 mill according to claim 5, 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 described housing (1) and does not arrange the internal diameter at 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, multiple described dynamic powder concentrators (5) are uniformly distributed along the girth of described housing (1).
CN201420333491.7U 2014-06-20 2014-06-20 Ultra-thin vertical roll mill Expired - Fee Related CN203899672U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104001588A (en) * 2014-06-20 2014-08-27 张嘉程 Superfine vertical roller mill
CN108339656A (en) * 2018-02-23 2018-07-31 烟台龙源电力技术股份有限公司 A kind of coal-burning boiler pulverized coal preparation system and its dynamic separator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104001588A (en) * 2014-06-20 2014-08-27 张嘉程 Superfine vertical roller mill
CN104001588B (en) * 2014-06-20 2016-04-20 张嘉程 Super fine vertical roller grinds
CN108339656A (en) * 2018-02-23 2018-07-31 烟台龙源电力技术股份有限公司 A kind of coal-burning boiler pulverized coal preparation system and its dynamic separator

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141029

Termination date: 20160620