CN102397806B - Material dispersing device for vertical grinder - Google Patents
Material dispersing device for vertical grinder Download PDFInfo
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- CN102397806B CN102397806B CN201110310367.XA CN201110310367A CN102397806B CN 102397806 B CN102397806 B CN 102397806B CN 201110310367 A CN201110310367 A CN 201110310367A CN 102397806 B CN102397806 B CN 102397806B
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Abstract
The invention discloses a kind of material dispersing device for vertical grinder, comprise the positive conical ring in the annular space that is arranged between the grinding machine shell of vertical grinder and the mill tube of vertical grinder and inverted cone ring, positive conical ring and inverted cone ring are arranged along the axially spaced-apart of grinding machine shell.The present invention passes through the material after adopting above-mentioned material dispersing device for vertical grinder that roller can be made to grind can extend fall time in the process fallen, disperseed fully at positive conical ring and tumbling in process of inverted cone ring, thus can by the air-flow repeated stock of rising, dispersion and sorting, thus improve grinding efficiency and the remarkable output increasing grinding machine.The invention also discloses a kind of material dispersing device for vertical grinder, comprise the dispersion plate of the tilted layout of annular space be arranged between grinding machine shell and mill tube, dispersion plate has the multilayer of arranging along grinding machine shell axially spaced-apart, and every layer of dispersion plate is spaced apart multiple along grinding machine shell circumference.
Description
Technical field
The present invention relates to vertical grinder technical field, particularly a kind of material dispersing device for vertical grinder.
Background technology
Vertical grinder is suitable for grinding and pulverizes various material, the raw meal particle size utilizing vertical grinder to grind is even, particle is trickle, several material also can mix by vertical ball mill extremely uniformly, is widely used in cement, industrial chemicals, abrasive material, pottery, ore, coal dust, metal dust, magnetic material etc.Due to the nonferromagnetic substance of vertical grinder uniqueness, be in industry widely used.
As shown in Figure 1, current vertical grinder comprises housing 102, drive unit 101 and the vertical mill tube 103 driven by this drive unit 101 and grinding roller 106, acts on the pressue device 108 of grinding roller 106, and this pressue device 108 provides pressure by oil cylinder 109.The roll surface of grinding roller 106 and the flour milling of vertical mill tube liner form break-in face, also be provided with screeding device 105, material enters vertical mill tube 103 through charging aperture 107, drive unit 101 drives vertical mill tube 103 to rotate, grinding roller 106 rotation, the material in the break-in face of entering is ground, screeding device 105 loosens to polished material, water conservancy diversion, vertical mill tube is discharged after grinding, pressure air is entered by air inlet 111, fine powder is discharged by outlet 112 through sorter 104, and coarse grain is then discharged outside machine by discharging opening 110.
Material falls into after bottom mill tube from the material inlet of vertical grinder, under the effect of centrifugal force component and scraper plate, gets rid of in the hoop space between housing and mill tube, do not arrange the device delaying to fall into dispersed material in this space from mill tube top.And other roller mill also has the steel plate arranging a circle and tilt to same direction in this space; be mainly used in delaying material; the material that thickness does not wait is blowed to powder-separating area, top and grinds region and regrinds by the air be blown into make high speed, only has the thickest bulky grain or large assorted iron fall into the bottom of grinding machine shell and are discharged outside machine.A large amount of thick fine is blowed to mill internal upper part and falls into the mode grinding region and will consume a large amount of energy consumptions by the air of a large amount of ultraspeed of this dependence again, if but adopt lower pressure or the air compared with low velocity, its a large amount of material can fall into bottom grinding machine shell and discharge grinding machine outside, this mode can produce again other problem, these problems mainly due to material from the annular space of housing and mill tube fall do not delayed and disperseed or only once delayed to fall time, a large amount of thickness materials mixed can not get sufficient dispersion, cause a lot of fine powder out can not be discharged outside machine with meal by air separation.
How to ensure also can realize thickness grain feed separation compared with the ascending air of low velocity, and fine powder blowed to mill internal upper part and coarse grain and meal fallen into above-mentioned annular space and discharges outside machine, significantly to reduce the consumption of power of fan, be those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of material dispersing device for vertical grinder, to ensure also can realize thickness grain feed separation compared with the ascending air of low velocity and fine powder be blown to mill internal upper part and make coarse grain and meal fall into grinding machine shell bottom and discharge outside machine, significantly to reduce the consumption of power of fan.
For achieving the above object, the invention provides following technical scheme:
A kind of material dispersing device for vertical grinder, comprise be arranged at vertical grinder the annular space between grinding machine shell and the mill tube of described vertical grinder in positive conical ring and inverted cone ring, described positive conical ring and described inverted cone ring are arranged along the axially spaced-apart of described grinding machine shell.
Preferably, in above-mentioned material dispersing device for vertical grinder, described inverted cone ring is arranged at by some muscle on the inwall of described grinding machine shell;
Described positive conical ring is connected on the inwall of described grinding machine shell by its maximum outside diameter edge joint weld.
Preferably, in above-mentioned material dispersing device for vertical grinder, described positive conical ring and described inverted cone ring are multiple, and described positive conical ring and described inverted cone ring are staggeredly arranged along the axis of described grinding machine shell.
Preferably, in above-mentioned material dispersing device for vertical grinder, the male cone (strobilus masculinus) of described inverted cone ring is pointed in the bottom of described positive conical ring;
The inner conical surface of described positive conical ring is pointed in the bottom of described inverted cone ring.
Preferably, in above-mentioned material dispersing device for vertical grinder, the angle of inclination of described positive conical ring and described inverted cone ring is equal to or is greater than the angle of repose of material.
A kind of material dispersing device for vertical grinder, comprise the dispersion plate of the tilted layout of annular space between grinding machine shell and the mill tube of described vertical grinder being arranged at vertical grinder, described dispersion plate has the multilayer of arranging along described grinding machine shell axially spaced-apart, and every layer of described dispersion plate is spaced apart multiple along described grinding machine shell circumference.
Preferably, in above-mentioned material dispersing device for vertical grinder, the incline direction of the two-layer described dispersion plate of arbitrary neighborhood is contrary.
Preferably, in above-mentioned material dispersing device for vertical grinder, the incline direction of the two-layer described dispersion plate of arbitrary neighborhood is identical.
Preferably, in above-mentioned material dispersing device for vertical grinder, the distance between the two-layer described dispersion plate of arbitrary neighborhood is equal.
Preferably, in above-mentioned material dispersing device for vertical grinder, the distance in same layer described in arbitrary neighborhood two between dispersion plate is equal.
Preferably, in above-mentioned material dispersing device for vertical grinder, the angle of inclination of described dispersion plate is equal to or is greater than the angle of repose of material.
As can be seen from above-mentioned technical scheme, material dispersing device for vertical grinder provided by the invention, comprise be arranged at vertical grinder the annular space between grinding machine shell and the mill tube of described vertical grinder in positive conical ring and inverted cone ring, described positive conical ring and described inverted cone ring are arranged along the axially spaced-apart of described grinding machine shell.
Based on above-mentioned setting, material dispersing device for vertical grinder provided by the invention, when the material be grated gets rid of from the top of the mill tube rotated the annulus formed to grinding machine shell and mill tube, material repeatedly stirring and disperseing from top to bottom under being guided by the positive conical ring arranged along grinding machine shell axially spaced-apart and inverted cone ring, meanwhile, material again disperse by the air-flow introduced from grinding machine shell side or bottom and perturb, thus the material making thickness mix is disperseed in atmosphere fully, tiny material is made all to be entered the powder-separating area sorting again on grinding machine top by ascending air entrained with, and coarse grain and meal are discharged machine from grinding machine bottom, therefore the material be grated obtains at this and tentatively selects powder preferably for the first time, enter territory, powder-separating area, grinding machine top through the material of preliminary classification and can obtain better sorting, thus also can improve total grinding efficiency of grinding machine and select powder precision.
As can be seen from another technical scheme of the present invention, material dispersing device for vertical grinder provided by the invention, comprise the dispersion plate of the tilted layout of annular space between grinding machine shell and the mill tube of described vertical grinder being arranged at vertical grinder, described dispersion plate has the multilayer of arranging along described grinding machine shell axially spaced-apart, and every layer of described dispersion plate is spaced apart multiple along described grinding machine shell circumference.
Based on above-mentioned setting, material dispersing device for vertical grinder provided by the invention, when the material be grated gets rid of from the top of the mill tube rotated the annulus formed to grinding machine shell and mill tube, material repeatedly stirring and disperseing from top to bottom under being guided by the dispersion plate that is in tilted layout along grinding machine shell, meanwhile, material again disperse by the air-flow introduced from grinding machine shell side or bottom and perturb, thus the material making thickness mix is disperseed in atmosphere fully, tiny material is made all to be entered the powder-separating area sorting again on grinding machine top by ascending air entrained with, and coarse grain and meal are discharged machine from grinding machine bottom, therefore the material be grated obtains at this and tentatively selects powder preferably for the first time, enter territory, powder-separating area, grinding machine top through the material of preliminary classification and can obtain better sorting, thus also can improve total grinding efficiency of grinding machine and select powder precision.
The present invention passes through the material after adopting above-mentioned material dispersing device for vertical grinder that roller can be made to grind can extend fall time in the process fallen, disperseed fully at positive conical ring and inverted cone ring or tumbling in process of multilayer inclined spreading plate, thus can by the air-flow repeated stock of rising, dispersion and sorting, thus improve grinding efficiency and the remarkable output increasing grinding machine.And because the present invention is by carrying out the stop of different directions to material, therefore the flow velocity of material is slower, can use the ascending air compared with low velocity, so just significantly can reduce the consumption of the power of blower fan.Adopt low speed flow also can reduce high velocity air washing away parts in mill, thus decrease the inter deterioration of grinding machine.The material be grated can obtain first sorting preferably in this dispersal device, therefore can improve the total grinding efficiency of grinding machine, thus obtains thinner powder and obtain higher output and reduce energy consumption further.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of existing vertical grinder;
The structural representation of the material dispersing device for vertical grinder that Fig. 2 provides for the embodiment of the present invention;
The structural representation of the material dispersing device for vertical grinder that the embodiment that Fig. 3 is another technical scheme of the present invention provides;
The partial structurtes schematic diagram that the incline direction that the arbitrary neighborhood double-layer separate that the embodiment one that Fig. 4 is another technical scheme of the present invention provides falls apart is contrary;
The partial structurtes schematic diagram that the incline direction that the arbitrary neighborhood double-layer separate that the embodiment two that Fig. 5 is another technical scheme of the present invention provides falls apart is identical.
Detailed description of the invention
The invention discloses a kind of material dispersing device for vertical grinder, to ensure that also can realize thick fine compared with the ascending air of low velocity is blown to mill internal upper part respectively and falls into and grind region, significantly to reduce the consumption of the power of blower fan.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 2, the structural representation of the material dispersing device for vertical grinder that Fig. 2 provides for the embodiment of the present invention.
Material dispersing device for vertical grinder provided by the invention, comprise the positive conical ring 13 in the annular space that is arranged between the grinding machine shell 11 of vertical grinder and the mill tube 12 of vertical grinder and inverted cone ring 14, positive conical ring 13 and inverted cone ring 14 are taper tubular structure, and the setting direction just in grinding machine shell 11 is different.Wherein positive conical ring 13 is interpreted as being contacted with material by its inner conical surface, and inverted cone ring 14 is interpreted as being contacted with material by its male cone (strobilus masculinus).Positive conical ring 13 and inverted cone ring 14 are arranged along the axially spaced-apart of grinding machine shell 11, with ensure material by mill tube 12 top to its outside by under unrestrained time, can be stopped by positive conical ring 13 and inverted cone ring 14 respectively, to reduce the falling speed of material.And just material can guide to different directions by conical ring 13 and inverted cone ring 14, therefore the falling speed of material can significantly reduce, and material can effectively be disperseed.
Material dispersing device for vertical grinder provided by the invention, when the material be grated gets rid of from the top of the mill tube 12 rotated the annulus formed to grinding machine shell 11 and mill tube 12, material is by under the guiding of the positive conical ring 13 arranged along grinding machine shell 11 axially spaced-apart and inverted cone ring 14, repeatedly stir from top to bottom and disperse, meanwhile, material again disperse by the air-flow introduced from grinding machine shell 11 side or bottom and perturb, thus the material making thickness mix is disperseed in atmosphere fully, tiny material is made all to be entered the powder-separating area sorting again on grinding machine top by ascending air entrained with, and coarse grain and meal are discharged machine from grinding machine bottom, therefore the material be grated obtains at this and tentatively selects powder preferably for the first time, enter territory, powder-separating area, grinding machine top through the material of preliminary classification and can obtain better sorting, thus also can improve total grinding efficiency of grinding machine and select powder precision.
Positive conical ring 13 is owing to adopting its inwall as the position contacted with material, therefore it is connected on the inwall of grinding machine shell 11 by its maximum outside diameter edge joint weld, can the maximum outside diameter of positive conical ring 13 be designed to equal with the internal diameter of grinding machine shell 11, to facilitate welding of positive conical ring 13 and grinding machine shell 11.
Can drop on the male cone (strobilus masculinus) of inverted cone ring 14 to make the material of landing on positive conical ring 13, usually the minimum outer diameter of inverted cone ring 14 need be designed to the minimum outer diameter being less than positive conical ring 13, the maximum outside diameter of inverted cone ring 14 is designed to the maximum outside diameter being less than positive conical ring 13, and its male cone (strobilus masculinus) is the surface contacted with material, therefore in order to inverted cone ring 14 and grinding machine shell 11 form the passage that material falls, its maximum outside diameter place directly can not be welded with grinding machine shell 11.In the present embodiment, inverted cone ring 14 is arranged on the inwall of grinding machine shell 11 by some muscle 15, and preferably, multiple muscle 15 are evenly distributed on the male cone (strobilus masculinus) of inverted cone ring 14.
In order to improve the dispersion effect of material further, positive conical ring 13 provided by the invention and inverted cone ring 14 can be multiple, and positive conical ring 13 and inverted cone ring 14 are staggeredly arranged along the axis of grinding machine shell 11, namely can not by the adjacent layout of multiple positive conical ring 13, equally also can not by the adjacent layout of multiple inverted cone rings 14.It will be understood by those skilled in the art that, the magnitude setting of positive conical ring 13 and inverted cone ring 14 is more, its material dispersion effect is better, but the flowing of material and air and cost can be affected too much can corresponding raising, the quantity of positive conical ring 13 and inverted cone ring 14 can be determined according to actual conditions.
The male cone (strobilus masculinus) of inverted cone ring 14 is pointed in the bottom of positive conical ring 13; The inner conical surface of positive conical ring 13 is pointed in the bottom of inverted cone ring 14, can ensure that material can by the inner conical surface landing accurately of positive conical ring 13 to the male cone (strobilus masculinus) of inverted cone ring 14, can ensure that material by the landing accurately of the male cone (strobilus masculinus) of inverted cone ring 14 to the inner conical surface of positive conical ring 13, can ensure the continuity that material repeatedly disperses equally.
Preferably, the angle of inclination of positive conical ring 13 provided by the invention and inverted cone ring 14 is equal to or is greater than the angle of repose of material.Angle of repose refers in gravitational field, the angle when Free Surface of powder accumulation body is in the limiting condition of balance between Free Surface and horizontal plane.The angle of inclination of positive conical ring 13 and inverted cone ring 14 is designed to the angle of repose being equal to or greater than material by the present invention, can slow down the gliding speed of material further, improves the time of supports for material down-sliding rolling, further increases material dispersion effect.
Refer to Fig. 3-Fig. 5, the structural representation of the material dispersing device for vertical grinder that the embodiment that Fig. 3 is another technical scheme of the present invention provides; The partial structurtes schematic diagram that the incline direction that the arbitrary neighborhood double-layer separate that the embodiment one that Fig. 4 is another technical scheme of the present invention provides falls apart is contrary; The partial structurtes schematic diagram that the incline direction that the arbitrary neighborhood double-layer separate that the embodiment two that Fig. 5 is another technical scheme of the present invention provides falls apart is identical.
Material dispersing device for vertical grinder provided by the invention, comprise the dispersion plate 23 of the tilted layout of annular space be arranged between the grinding machine shell 21 of vertical grinder and the mill tube 22 of vertical grinder, dispersion plate 23 has the multilayer of arranging along grinding machine shell 21 axially spaced-apart, and every layer of dispersion plate 23 is spaced apart multiple along grinding machine shell 21 circumference.Preferably, arbitrary neighborhood double-layer separate fall apart 23 incline direction contrary (as shown in Figure 4), also can identical (as shown in Figure 5).Preferably, the fall apart incline direction of plate 23 of arbitrary neighborhood double-layer separate is identical.Preferably, dispersion plate 23 incline direction in same layer is identical.It will be appreciated by persons skilled in the art that the magnitude setting of the dispersion plate 23 of each layer is more, its material dispersion effect is better, but the flowing of material and air and cost can be affected too much can corresponding raising, the quantity of each layer dispersion plate 23 can be determined according to actual conditions.
Material dispersing device for vertical grinder provided by the invention, when the material be grated gets rid of from the top of the mill tube 22 rotated the annulus formed to grinding machine shell 21 and mill tube 22, material is guided down repeatedly stirring and disperseing from top to bottom by the dispersion plate 23 be in tilted layout along grinding machine shell 21, meanwhile, material again disperse by the air-flow introduced from grinding machine shell 21 side or bottom and perturb, thus the material making thickness mix is disperseed in atmosphere fully, tiny material is made all to be entered the powder-separating area sorting again on grinding machine top by ascending air entrained with, and coarse grain and meal are discharged machine from grinding machine bottom, therefore the material be grated obtains at this and tentatively selects powder preferably for the first time, enter territory, powder-separating area, grinding machine top through the material of preliminary classification and can obtain better sorting, thus also can improve total grinding efficiency of grinding machine and select powder precision.
The arbitrary neighborhood double-layer separate distance falling apart 23 between (i.e. anacline dispersion plate 231 be adjacent anti-obliquity dispersion plate 232) can be designed to equal, and the distance in same layer between arbitrary neighborhood two dispersion plate 23 also can be designed to equal.Based on this, the present invention can ensure that the material at the regional place of annular space between grinding machine shell 11 and the mill tube 12 of vertical grinder is basically identical, places local material too much, the drawback that the dispersion effect caused is bad.
The angle of inclination of dispersion plate 23 is equal to or is greater than the angle of repose of material, and angle of repose refers in gravitational field, the angle when Free Surface of powder accumulation body is in the limiting condition of balance between Free Surface and horizontal plane.The angle of inclination of dispersion plate 23 (anacline dispersion plate 231 and anti-obliquity dispersion plate 232) is designed to the angle of repose being equal to or greater than material by the present invention, the gliding speed of material can be slowed down further, improve the time of supports for material down-sliding rolling, further increase material dispersion effect.
In sum, the present invention passes through the material after adopting above-mentioned material dispersing device for vertical grinder that roller can be made to grind can extend fall time in the process fallen, disperseed fully at positive conical ring and inverted cone ring or tumbling in process of multilayer inclined spreading plate, thus can by the air-flow repeated stock of rising, dispersion and sorting, thus improve grinding efficiency and the remarkable output increasing grinding machine.And because the present invention is by carrying out the stop of different directions to material, therefore the flow velocity of material is slower, can use the ascending air compared with low velocity, so just significantly can reduce the consumption of power of fan.Adopt low speed flow also can reduce high velocity air washing away parts in mill, thus decrease the inter deterioration of grinding machine.The material be grated can obtain first sorting preferably in this dispersal device, therefore can improve the total grinding efficiency of grinding machine, thus obtains thinner powder and obtain higher output and reduce energy consumption further.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a material dispersing device for vertical grinder, it is characterized in that, comprise be arranged at vertical grinder the annular space between grinding machine shell (11) and the mill tube (12) of described vertical grinder in positive conical ring (13) and inverted cone ring (14), described positive conical ring (13) and described inverted cone ring (14) are arranged along the axially spaced-apart of described grinding machine shell (11);
The minimum outer diameter of described inverted cone ring (14) is less than the minimum outer diameter of described positive conical ring (13), the maximum outside diameter of described inverted cone ring (14) is less than the maximum outside diameter of described positive conical ring (13), and the male cone (strobilus masculinus) of described inverted cone ring (14) is the surface contacted with material;
Described positive conical ring (13) adopts its inwall as the position contacted with material.
2. material dispersing device for vertical grinder as claimed in claim 1, it is characterized in that, described inverted cone ring (14) is arranged on the inwall of described grinding machine shell (11) by some muscle (15);
Described positive conical ring (13) is connected on the inwall of described grinding machine shell (11) by its maximum outside diameter edge joint weld.
3. material dispersing device for vertical grinder as claimed in claim 1, it is characterized in that, described positive conical ring (13) and described inverted cone ring (14) are multiple, and described positive conical ring (13) and described inverted cone ring (14) are staggeredly arranged along the axis of described grinding machine shell (11).
4. material dispersing device for vertical grinder as claimed in claim 3, it is characterized in that, the male cone (strobilus masculinus) of described inverted cone ring (14) is pointed in the bottom of described positive conical ring (13);
The inner conical surface of described positive conical ring (13) is pointed in the bottom of described inverted cone ring (14).
5. the material dispersing device for vertical grinder as described in any one of claim 1-4, is characterized in that, the angle of inclination of described positive conical ring (13) and described inverted cone ring (14) is equal to or is greater than the angle of repose of material.
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| CN201110310367.XA CN102397806B (en) | 2011-10-13 | 2011-10-13 | Material dispersing device for vertical grinder |
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| CN201110310367.XA CN102397806B (en) | 2011-10-13 | 2011-10-13 | Material dispersing device for vertical grinder |
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| CN102397806B true CN102397806B (en) | 2015-08-26 |
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| CN103203264B (en) * | 2013-02-07 | 2015-07-01 | 洛阳矿山机械工程设计研究院有限责任公司 | Airflow transportation method for vertical roller mill airflow device of cement raw material slag |
| CN108262105A (en) * | 2018-03-20 | 2018-07-10 | 佛山市几何陶瓷有限公司 | A kind of ball mill |
| CN109721263B (en) * | 2019-01-29 | 2021-07-09 | 肇庆市金岗水泥有限公司 | Preparation method of skutterudite preheated cement |
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| CN114643106B (en) * | 2022-04-02 | 2024-07-26 | 天津水泥工业设计研究院有限公司 | Manufacturing method of built-in flow guiding mechanism of vertical roller mill |
| CN115254373B (en) * | 2022-06-24 | 2024-05-14 | 河南黎明重工科技股份有限公司 | Scraping device for vertical roller mill center feeding |
| CN115463715B (en) * | 2022-09-20 | 2023-11-10 | 安徽国宏合金材料有限公司 | Vertical mill cavity centrifugal bulk cargo device and implementation method thereof |
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| CN102397806A (en) | 2012-04-04 |
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