CN103316754B - Screening device in super-fine grinding mill - Google Patents
Screening device in super-fine grinding mill Download PDFInfo
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- CN103316754B CN103316754B CN201310271453.3A CN201310271453A CN103316754B CN 103316754 B CN103316754 B CN 103316754B CN 201310271453 A CN201310271453 A CN 201310271453A CN 103316754 B CN103316754 B CN 103316754B
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Abstract
A screening device in a super-fine grinding mill comprises a barrel body and a bracket in the barrel body, wherein a bracket bottom plate is arranged at the periphery of the bracket; a front chamber and a rear chamber in the super-fine grinding mill are arranged on the left side and the right side of the bracket respectively; a front screen plate and a rear screen plate are connected with the left side and the right side of the bracket respectively; a front grate plate is connected with the left side of the front screen plate; a boss projecting out of the right side surface is arranged on the right side surface of the front grate plate; a screening chamber is formed between the right side surface of the front grate plate and the left side surface of the front screen plate; the top end of the boss props against the left side surface of the front screen plate. According to the screening device, a conventional cement grinding mill cabin baffle and a blind plate in the screening device are replaced with a rear grate plate, a ventilation area in the mill is enlarged, a smooth ventilation effect is achieved, powder can timely enter a rear cabin for grinding through the screening device from a front cabin, the excessive grinding and cushion effects of the front cabin are reduced, the grinding capability of a grinding cabin is improved, and the operation hour of the grinding mill is prolonged.
Description
Technical field
The present invention relates to Super-fine grinder field, especially relate to a kind of screening with in mill equipment of Super-fine grinder.
Background technology
Super-fine grinder is a kind of mill, but it can go out the grinding meticulousr than general mill by processing grinding.The parts such as Super-fine grinder generally all can by grinding machine, cylindrical shell, charging aperture, discharging opening, partition panel, abrasive body form.
Current many industries are more and more higher to powder fineness requirement, and such as petroleum propping agent (ceramsite sand) raw meal requires that 325 mesh screen residues are less than 1%, and with conventional tube grinding machine grinding aluminium stone flour, fineness is difficult to ensure, and mill output is low.Trace it to its cause because mostly grinding machine manufacturer is to manufacture and design according to cement industry grinding raw material or cement requirement, and cement is to fineness requirement not high (200 mesh screen residues are less than 4%), mill inner structure is relatively simple.In three-chamber mill, one or two storehouses are crushing bin, and three storehouses are grinding storehouse, and partition panel is double-layered isolating plate, and castor seam is wider, and front is casting grate plate, and back is blind plate, and front storehouse material mainly enters by lateral pressure, promote enter Hou Cang through intermediate discharging cone through lifting blade.
Its major defect is: ventilation is smooth, and castor seam is wide, and bulky grain enters Hou Cang through castor seam, and particularly enter grinding storehouse and can not be polished body pulverizing, cause rear storehouse particle accumulation, grinding efficiency is reduced, cause output lower, fineness is thicker.Especially for the grinding of aluminum ore, its grindability is poorer, and output is lower, and fineness not easily ensures.
Summary of the invention
The object of the present invention is to provide a kind of Super-fine grinder screening with in mill device, improve the breaking capacity in front storehouse and the grainding capacity in rear storehouse, improve output.
Technical scheme of the present invention is:
Super-fine grinder screening with in mill device, comprise the support in cylindrical shell and cylindrical shell, the periphery of described support is provided with support base plate, the described support left and right sides be respectively Super-fine grinder mill in cup and rear room, the described support left and right sides is connected to front sieve plate and rear sieve plate, front comb board is connected with on the left of front sieve plate, the right flank of described front comb board is provided with the boss protruding right flank, form sieve compartment between the right flank of described front comb board and the left surface of front sieve plate, the top of boss is pressed against on the left surface of front sieve plate; Be provided with the lifting blade of polylith radial arrangement in described sieve compartment, described lifting blade is centered by the central axis of cylindrical shell and be along the circumferential direction arranged circumferentially.
The center of described front comb board is provided with feed back space, is connected with feeding back device on the left of described front sieve plate, and described feeding back device is positioned at this feed back space.
Described feeding back device comprises more than three groups or the three groups stock guide groups along the circumferential direction arranged, each stock guide group comprises the stock guide of polylith outward-dipping layout from center, the stock guide length of described stock guide group outwards lengthens successively from center, and described stock guide is obliquely installed along lower right.
Described single stock guide group comprises three pieces of stock guides that the outside length from center lengthens successively.
The right side of described rear sieve plate is connected with back comb board.
The castor seam of back comb board is vertical to be arranged, and castor seam is 8 ~ 12mm.
Connected by multiple fixed screw between front comb board and back comb board.
Described lifting blade is along the circumferential direction connected on support base plate.
The castor seam horizontally set of described front comb board, castor seam is 8 ~ 12mm.
The sieve seam of front sieve plate is 1 ~ 3mm, and the sieve seam of rear sieve plate is 3 ~ 5mm.
The present invention is made up of front comb board, lifting blade, front sieve plate, support, rear sieve plate, back comb board, feeding back device etc., its operation principle is, front storehouse material enters sieve compartment through front comb board, enter in support compared with granule by the premenstrual sieve plate that pulls of lateral pressure and wind, unsanctioned particle is kicked up through lifting blade and is returned to front storehouse by feeding back device, kicked up through rack side plate by the material of support, storehouse after being imported by burden-guiding cone, completes the screening to entering next storehouse material.
The present invention and traditional partition panel difference are, a screening space is increased between front comb board and support, the front sieve plate of punching press is fixed on support, support base plate is fixed on grinding mill barrel, boss on front comb board is pressed on sieve plate, makes the screening space forming a boss height between front comb board and front sieve plate, support base plate welds lifting blade, front comb board, lifting blade, front sieve plate, support, rear sieve plate, back comb board from front to back successively, overall by partition panel screw composition.
Present invention eliminates the blind plate in conventional cement mill partition panel and screening plant, change back comb board into, add mill inner ventilation area, make mill inner ventilation smooth and easy, powder can enter the grinding of rear storehouse by the present invention in the past storehouse in time, decrease front storehouse and cross grinding and backing strap effect, crushing bin breaking capacity is strengthened, when improving grinding machine platform.
Increase lifting blade, front sieve plate can control the granularity entering rear storehouse material, by front comb board but not by the larger particles of sieve plate, kicked up by lifting blade and return to front storehouse through feeding back device, thus avoid bulky grain and enter Hou Cang and gather, the little grinding physical efficiency in rear storehouse is made to give full play to abrasive action, make full use of space in mill, improve grinding efficiency, ensure out grind materials fineness.
The supercentral feeding back device of front sieve plate, enablely can not return to front storehouse by the bulky grain of fore worker plate by front comb board, this feeding back device is different from the feed back cone in general screening plant, the polylith inclination stock guide that it is outwards arranged by six group switching centres forms, compared with boring with feed back, flowing resistance is little, simultaneously in the coarse granule kicked up of lifting blade with fine powder, through feeding back device, next storehouse can be entered by center sieve plate and burden-guiding cone under the pulling function of wind, improve screening efficiency.
Screening power of the present invention, come from the lateral pressure that charge level difference is formed on the one hand, (conventional screen separating device intercepts due to blind plate to come from the other hand motive force that mill inner ventilation formed, ventilate poor, screening effect is poor), screening efficiency is high, good to mill feed material adaptability, forward and backward sieve plate is stamping parts, and the sieve seam of front sieve plate is 1 ~ 3mm, and the sieve seam of rear sieve plate is 3 ~ 5mm.(can adjust according to material characteristic), can ensure that the particle entering rear storehouse is less than 3mm, (granule and powder can enter next storehouse in time to give full play to the breaking capacity in front storehouse like this, reduce backing strap buffering), and the grainding capacity in rear storehouse (rear storehouse does not have bulky grain, can strengthen grinding with little abrasive body), by Reasonable adjustment grinding body gradation and filling rate, grinding machine ability can be made to give full play to, improve output, reduce power consumption.This screening with in mill apparatus structure is simple, and install easily, low cost of manufacture, debugging is convenient.The present invention is used in the preparation of certain ceramsite sand raw meal, brings up to 23t/h during 3*13 rice grinding machine platform by 18t/h.
The present invention through using on 3*13 rice grinding machine, and obtain positive effect, output can improve more than 20%, and unit product power consumption declines 15%, achieves good economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is Fig. 1 close-up schematic view I;
Fig. 3 is the A direction view in Fig. 1, and wherein front sieve plate, rear sieve plate, back comb board are all the schematic diagrames after removing each plate of gear on front side of it;
Fig. 4 is the structural representation of feeding back device.
Detailed description of the invention
As shown in Figure 1, 2, the present invention includes support 1, support 1 left and right sides is connected to front sieve plate 2 and rear sieve plate 3, and centered by cylindrical shell 9 central axis, along the circumferential direction hoop is evenly arranged.The left side of front sieve plate 2 is abutted against front comb board 4, and the right side of front comb board 4 is provided with boss 6, and boss 6 is pressed on the left surface of front comb board 4.The right flank of rear sieve plate 3 has been pressed against back comb board 7.
As shown in Figure 3, front sieve plate 2 and rear sieve plate 3 are stamping parts, and the sieve seam of front sieve plate 2 is that 1 ~ 3mm(the present embodiment gets 2mm), the sieve seam of rear sieve plate is that 3 ~ 5 mm(the present embodiment get 4mm).
Front comb board 4, back comb board 7 are wear-resistant cast steel parts, mid portion porous, front comb board 4, back comb board 7 are all be put together by polylith wear-resistant cast steel parts plate, its size sets according to the cylindrical shell size of place Super-fine grinder, polylith wear-resistant cast steel parts plate is centered by body centre axis, and along the circumferential direction hoop is evenly arranged.The castor seam horizontally set of front comb board 4, the castor seam of back comb board 7 is vertical to be arranged, and the castor seam of front comb board 4, back comb board 7 is 8 ~ 12mm (the present embodiment adopts 10mm).
The outside of front comb board 4, back comb board 7 is respectively cup 15, rear room 16.Connected by multiple fixed screw 19 between front comb board 4, back comb board 7.
Between front comb board 4 and front sieve plate 2, define sieve compartment 5, the width of sieve compartment 5 equals boss 6 height of front comb board 4.
Support 1 is weldment in the present embodiment, be made up of (quantity is determined by mill diameter, general identical with grate plate quantity) more than one piece, support 1 is circular in the present embodiment, its circumferential edge is support base 8, and support base 8 hoop is fixedly connected on the cylindrical shell 9 of Super-fine grinder.Support base 8 is also circumferentially connected with lifting blade 10, and lifting blade 10, between front comb board 4 and front sieve plate 2, is positioned at sieve compartment 5.Cylindrical shell 9 is also provided with liner plate 20.
As shown in Figure 2, the center hollow of front comb board 4, is provided with feed back space 11, is provided with feeding back device 12 in this feed back space 11.
As shown in Figure 4, feeding back device 12 is the polygon (being generally regular polygon) of tabular, what the present embodiment adopted is regular hexagon, the polylith inclination stock guide 13 that it is outwards arranged by six Zu Cong centers forms, stock guide 13 is obliquely installed, the right edge of stock guide 13 is along downward-sloping, and angle of inclination is determined according to actual conditions.Connected by gusset 14 between two groups of adjacent stock guides 13, the quantity often organizing stock guide 13 sets according to actual conditions, and the present embodiment is 3 pieces, and the length of 3 pieces of stock guides 13 outwards becomes large successively from center.
Sieve plate 18 centered by the right side of feeding back device 12 is burden-guiding cone 17 on the right side of center sieve plate 18.
Front storehouse material enters sieve compartment 5 through front comb board 4, enter in support 1 compared with granule by the premenstrual sieve plate 2 that pulls of lateral pressure and wind, unsanctioned particle is kicked up through lifting blade 10 and is returned to front storehouse by feeding back device 12, kicked up through rack side plate by the material of support 1, importing rear storehouse (namely room 16) by burden-guiding cone 17, completing the screening to entering next storehouse material.
Screening power of the present invention, comes from the one hand the lateral pressure that charge level difference is formed, and (conventional screen separating device intercepts due to blind plate to come from motive force that mill inner ventilation formed on the other hand, ventilate poor, screening effect is poor), screening efficiency is high, good to mill feed material adaptability.
Claims (8)
1. Super-fine grinder screening with in mill device, comprise the support in cylindrical shell and cylindrical shell, the periphery of described support is provided with support base plate, the described support left and right sides be respectively Super-fine grinder mill in cup and rear room, it is characterized in that: the described support left and right sides is connected to front sieve plate and rear sieve plate, front comb board is connected with on the left of front sieve plate, the right flank of described front comb board is provided with the boss protruding right flank, form sieve compartment between the right flank of described front comb board and the left surface of front sieve plate, the top of boss is pressed against on the left surface of front sieve plate; Be provided with the lifting blade of polylith radial arrangement in described sieve compartment, described lifting blade is centered by the central axis of cylindrical shell and be along the circumferential direction arranged circumferentially; The center of described front comb board is provided with feed back space, is connected with feeding back device on the left of described front sieve plate, and described feeding back device is positioned at this feed back space; Described feeding back device comprises more than three groups or the three groups stock guide groups along the circumferential direction arranged, each stock guide group comprises the stock guide of polylith outward-dipping layout from center, the stock guide length of described stock guide group outwards lengthens successively from center, and described stock guide is obliquely installed along lower right.
2. Super-fine grinder screening with in mill device according to claim 1, is characterized in that: described single stock guide group comprises three pieces of stock guides that the outside length from center lengthens successively.
3. Super-fine grinder screening with in mill device according to claim 1, is characterized in that: the right side of described rear sieve plate is connected with back comb board.
4. Super-fine grinder screening with in mill device according to claim 3, is characterized in that: the castor seam of described back comb board is vertical to be arranged, and castor seam is 8 ~ 12mm.
5. Super-fine grinder screening with in mill device according to claim 4, is characterized in that: connected by multiple fixed screw between front comb board and back comb board.
6. Super-fine grinder screening with in mill device according to claim 1, is characterized in that: described lifting blade is along the circumferential direction connected on support base plate.
7. Super-fine grinder screening with in mill device according to claim 1, is characterized in that: the castor seam horizontally set of described front comb board, castor seam is 8 ~ 12mm.
8. Super-fine grinder screening with in mill device according to claim 1, is characterized in that: the sieve seam of front sieve plate is 1 ~ 3mm, and the sieve seam of rear sieve plate is 3 ~ 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310271453.3A CN103316754B (en) | 2013-07-01 | 2013-07-01 | Screening device in super-fine grinding mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310271453.3A CN103316754B (en) | 2013-07-01 | 2013-07-01 | Screening device in super-fine grinding mill |
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| CN103316754A CN103316754A (en) | 2013-09-25 |
| CN103316754B true CN103316754B (en) | 2015-05-27 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056710A (en) * | 2014-06-28 | 2014-09-24 | 山东省章丘鼓风机股份有限公司 | Composite internal separating and grinding device of pipe grinder |
| CN104741180A (en) * | 2014-07-22 | 2015-07-01 | 周鸿钧 | Compound type grate plate for ball mill |
| CN105772175B (en) * | 2016-03-07 | 2018-08-10 | 中信重工机械股份有限公司 | A kind of interchangeability drying partition device for barn for sweeping coal mill for wind |
| CN105728114A (en) * | 2016-04-10 | 2016-07-06 | 齐继红 | Garbage smashing and screening ball mill and use method thereof |
| CN106423420B (en) * | 2016-09-20 | 2019-06-18 | 派勒（天津）纳米技术有限公司 | A kind of dry type multistage intelligent agitating ball mill |
| CN113976257B (en) * | 2021-09-15 | 2023-08-29 | 中信重工机械股份有限公司 | Drying type air-sweeping mill |
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| CN201030323Y (en) * | 2007-04-24 | 2008-03-05 | 黄拥军 | Inner sifting combined atomizer mill |
| CN201076824Y (en) * | 2007-09-03 | 2008-06-25 | 刘怀平 | Double-deck screen separating bin device |
| CN201841038U (en) * | 2010-10-29 | 2011-05-25 | 成都利君实业股份有限公司 | Compartment device of cement mill |
| CN203329815U (en) * | 2013-07-01 | 2013-12-11 | 三门峡方圆实业股份有限公司 | Inner screening device of super-fine grinding mill |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201030323Y (en) * | 2007-04-24 | 2008-03-05 | 黄拥军 | Inner sifting combined atomizer mill |
| CN201076824Y (en) * | 2007-09-03 | 2008-06-25 | 刘怀平 | Double-deck screen separating bin device |
| CN201841038U (en) * | 2010-10-29 | 2011-05-25 | 成都利君实业股份有限公司 | Compartment device of cement mill |
| CN203329815U (en) * | 2013-07-01 | 2013-12-11 | 三门峡方圆实业股份有限公司 | Inner screening device of super-fine grinding mill |
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Effective date of registration: 20161025 Address after: Mianchi County, the Western Avenue in Sanmenxia city of Henan Province in 472400 Patentee after: Ke Tokumegumi Petroleum proppant Co., Ltd. Address before: Mianchi County, the Western Avenue in Sanmenxia city of Henan Province in 472400 Patentee before: Sanmenxia Fangyuan Industrial Co., Ltd. |