CN102962115B - Vertical grinding mill - Google Patents

Vertical grinding mill Download PDF

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Publication number
CN102962115B
CN102962115B CN201210480032.7A CN201210480032A CN102962115B CN 102962115 B CN102962115 B CN 102962115B CN 201210480032 A CN201210480032 A CN 201210480032A CN 102962115 B CN102962115 B CN 102962115B
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CN
China
Prior art keywords
mill
grinding
vertical mill
fixed
vertical
Prior art date
Application number
CN201210480032.7A
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Chinese (zh)
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CN102962115A (en
Inventor
汪宁
肖杰玉
孙斌
张树琛
卫明
周健
Original Assignee
安徽海螺川崎节能设备制造有限公司
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Priority to CN201210480032.7A priority Critical patent/CN102962115B/en
Publication of CN102962115A publication Critical patent/CN102962115A/en
Application granted granted Critical
Publication of CN102962115B publication Critical patent/CN102962115B/en

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Abstract

The invention discloses a vertical grinding mill, wherein a vertical grinding mill body is fixed on a concrete foundation; a grinding table is driven by a rotary power source and horizontally placed at the bottom of the vertical grinding mill; a discharging clearance exists between the grinding table and the inner wall of the vertical grinding mill; a non-grinding region in the center of the grinding table is of an upwards-raised cone; an edge grinding region is of an arc surface which is gradually raised upwards; and a grinding roller extends from the side of the vertical grinding mill to the upside of the grinding region of the grinding table and obliquely fixed downwards. The vertical grinding mill provided by the invention has the advantages of small grinding table diameter, high grinding table rotating sped, high work efficiency, low energy consumption and the like.

Description

Grinding Vertical Mill

Technical field

The present invention relates to the grinding that one is applied to cement, building materials, metallurgy, electric power and chemical industry grinding (drying grinding of holding concurrently) and other material.

Background technology

Vertical Mill is mainly used in the grinding of cement raw material, cement, coal and slag, and the production that it is factory provides raw material endlessly, so its cycle of operation must grow and fault rate is low, this just makes each modular construction of Vertical Mill must be sturdy and durable.Current most domestic Vertical Mill structure mostly is cast-in-block plane mill, be in operation and there is following problem: 1) when normal work along with the rotation of mill, the impact that raw material is subject to centrifugal force disperses on mill, but owing to being plane mill, raw material skewness on this mill causes the thickness of feed layer at each position on mill to differ, and is easy to cause Vertical Mill mair motor load increase and make whole vertical mill system stop jumping; 2) owing to being plane mill, when grinding, the grinding track of grinding roller is vertical with mill, makes gap between grinding roller and mill less, increases the contact surface aggravation mill of grinding roller and mill and the wearing and tearing of grinding roller when bed of material skewness.

Summary of the invention

That grinds due to Vertical Mill mostly is cement slurry, grog, coal and slag etc., and these raw materials are very hard, and longtime running is comparatively large to the degree of wear of equipment associated components, and therefore a kind of wearing and tearing of design are low, and operating efficiency is high, overhauls Vertical Mill structure easily.

To achieve these goals, the technical solution used in the present invention is: grinding Vertical Mill body is fixed in concrete foundation, mill is driven by rotating power source and level is placed in bottom Vertical Mill, blanking gap is there is between described mill and Vertical Mill inner body wall, described non-ground district, mill center is in the taper raised up, edge grinding district is in the cambered surface outwards raised gradually, and grinding roller to be stretched to above mill milling zone by Vertical Mill side and tilts fixing obliquely.

The rocking arm outer end of described grinding roller is fixed on supporting revolving shaft seat, and is connected with the upset hydraulic cylinder be fixed in concrete foundation by connecting rod.

Described supporting revolving shaft seat is connected with the interstitial fluid cylinder pressure be fixed in concrete foundation.

The top that described Vertical Mill body fixes grinding roller region is provided with upset access door, when described grinding roller is positioned at Vertical Mill body, its rocking arm and upset access door, is provided with sealing canvas between Vertical Mill body.

Described mill milling zone outer is fixed with a circle blocking material ring.

The Vertical Mill body bottom portion in described blanking gap is provided with blanking recovery holes, and blanking gap is provided with the scraper plate being fixed on and mill drawing blanking along bottom in.

Upwards the hot-blast stove outlet of air blast is positioned on the Vertical Mill body in described blanking gap, the Vertical Mill body above blanking gap is provided with a circle upwards in wind-guiding ring flat-plate through reducing gradually.

The blanking scraper-trough conveyer of conveying on mill is provided with in described Vertical Mill body, be provided with funnel-form above described mill and return grey cylinder, described returning above grey cylinder is fixed with powder concentrator, and the updraft carrying abrasive flour is sent through the discharging opening of powder concentrator by Vertical Mill bodies top.

Described powder concentrator is driven by powder concentrator reductor and rotates, it is vertically fixed with rotor blade for one week by double-layer hollow framework and edge and forms, a delineation blades is provided with outside described rotor blade, Vertical Mill inner body wall is fixed in described stator vane upper end, edge on grey cylinder is fixed on go back in lower end, between described adjacent rotor blade and there is pan feeding gap between stator vane and all and radial skew.

Sparge pipe has been stretched into outside to inside by described Vertical Mill body, described sparge pipe spout is positioned at above mill milling zone, the described sparge pipe position be fixed on Vertical Mill body is adjustable pipe, and described adjustable pipe two ends are provided with and make spout only along the limiting plate of mill milling zone radial zone activity.

Vertical Mill of the present invention, compared with other products of same model, has and has following advantage:

Feeding is even, easy grinding.No matter adopt center feeding or side feeding, material can evenly fall mill central authorities, and material is easily polished;

Grinding is efficient, and the life-span is long.Adopt four to take turns the form of the foetus grinding roller, mix blocking material ring and the scraper plate of special construction, grinding roller and lining board for grinding discs surface adopt hardfacing materials, ensure that high abrasive energy and service life;

Grinding efficiency is high.Adopt up-to-date sound state separator, grinding efficiency is high;

Operational shock is little.Rocker bearing basis adopts xoncrete structure, and four tie-beams are connected with rocker bearing base, define the support of whole grinding machine shell, thus reduce the vibration of grinding machine; Certain spacing is remained, even if bed of material shakiness also can not produce excessive vibration between grinding roller and mill;

Working service is convenient.Hydraulic pressure tension system adopts cylinder arm to add rocker structure, often organizes grinding roller and use independently compression system during pressurization; Single grinding roller can be routed up outside body by maintenance hydraulic cylinder independently, and inspection and maintenance is convenient; Whole compression system, only have grinding roller in mill, other are all outside mill, and it is few that wind sweeps parts; The given pretightning force of form of conical ring is adopted during grinding roller assembling, after debugging terminates, can long-play, without the need to gradation fastening bolt;

Security performance is high.Rocker arm system have employed specific safety design, keeps specific gap between grinding roller and mill, ensures device security when maintenance and maloperation.

Accompanying drawing explanation

Mark in the content expressed every width accompanying drawing in description of the present invention below and figure is briefly described:

Fig. 1 is Vertical Mill structural representation;

Fig. 2,3,4 is Vertical Mill partial schematic diagram;

Mark in above-mentioned figure is: 1, concrete foundation; 2, mair motor; 3, shaft coupling; 4, reductor; 5, hot-blast stove outlet; 6, interstitial fluid cylinder pressure; 7, hydraulic cylinder is overturn; 8, mill; 9, grinding roller; 10, rocking arm; 11, blanking scraper-trough conveyer; 12, powder concentrator; 13, powder concentrator reductor; 14, rotor blade; 15, discharging opening; 16, grey cylinder is returned; 17, platform is maintained; 18, top maintenance platform; 19, blocking material ring; 20, blanking gap; 21, scraper plate; 22, sparge pipe; 23, adjustable pipe; 24, limiting plate; 25, wind-guiding ring flat-plate; 26, stator vane.

Detailed description of the invention

Known see Fig. 1, Vertical Mill body is fixed in concrete foundation 1, mill 8 is installed on the reductor 4 of Vertical Mill body bottom portion, reductor 4 is driven by mair motor through shaft coupling 3, band movable grinding disc 8 rotates, non-ground district, mill 8 center is in the taper raised up, its edge grinding district (lining board for grinding discs) is in the cambered surface outwards raised gradually, Vertical Mill body is provided with the blanking scraper-trough conveyer 11 of conveying on mill 8, because mill 8 non-ground district is taper, the centripetal force that material can rotate with mill 8 when falling on mill 8 and conical surface sliding force enter periphery milling zone uniformly and grind.Grinding roller 9 is supported by rocking arm 10, stretch to above mill 8 milling zone by Vertical Mill side, grinding roller 9 arranges four usually, homocline is downward-sloping fixing, matched with the milling zone raised gradually to extrados in the roller epidermis face of grinding roller 9, when above-mentioned mill 8 milling zone structure can make material rotate with mill, affect by centripetal force and inclination cambered surface, material can be evenly distributed in milling zone and be ground by grinding roller 9.

Overhaul for convenience of grinding roller 9, rocking arm 10 outer end (being positioned at this external end of Vertical Mill) of fixing grinding roller 9 is fixed on supporting revolving shaft seat, and this end is extended with a connecting rod, interlinking lever end is connected with the upset hydraulic cylinder 7 be fixed in concrete foundation 1 by bearing pin, thus with supporting revolving shaft seat for fulcrum, connecting rod is lever, and grinding roller 9 can be routed up Vertical Mill by upset hydraulic cylinder 7 flexible, and this externally carries out overhauling or pushing in Vertical Mill body carrying out work.Said structure grinding roller 9 is coordinated to rout up mechanism, fix above grinding roller 9 region at Vertical Mill body and be provided with upset access door, when grinding roller 9 is positioned at Vertical Mill body, its rocking arm 10 and upset access door, sealing canvas is provided with between Vertical Mill body, when grinding roller 9 is routed up in such needs maintenance, only need cut off sealing canvas, open access door, upset hydraulic cylinder 7 shrinks, when maintenance is complete, also only need overturn on hydraulic cylinder 7 and push away, close access door after grinding roller 9 puts in place and sew up new sealing canvas again, canvas sealing is used to ensure sealing effectiveness, also can easy disassembly, vibration effect can also be avoided simultaneously, reduce quality of fit requirement between parts.

In order to adjust the gap between grinding roller 9 and mill 8, regulate grinding precision, below supporting revolving shaft seat, be provided with an interstitial fluid cylinder pressure 6, interstitial fluid cylinder pressure 6 one end is articulated with in concrete foundation 1, and the other end is hinged on supporting revolving shaft seat.

Known see Fig. 2; blanking gap 20 is there is between mill 8 and Vertical Mill inner body wall; the bulky grain do not ground or hard object can be fallen bottom blanking gap 20 by gap between the two; mill 8 milling zone outer is fixed with a circle blocking material ring 19; the thickness of blocking material ring 19 can be changed according to grinding material difference; blocking material ring 19 is fixed by screw, is convenient for changing, thus effectively controls the material particles size falling into blanking gap 20.Be provided with blanking recovery holes at the Vertical Mill body bottom portion in blanking gap 20, and be provided with in blanking gap 20 to be fixed on mill 8 and draw the scraper plate 21 of blanking in along bottom, scraper plate 21 can rotate with mill, by the material collection that falls in recovery holes.In order to improve grinding efficiency further, below recovery holes, belt feeder can be installed, recovered material is delivered to screening installation, and available material will be screened beat heap, or directly deliver to blanking scraper-trough conveyer 11, send into mill 8 and again grind.

The Vertical Mill body in blanking gap 20 is provided with the hot-blast stove outlet 8 of upwards air blast, the mode of upwards air blast is adopted upwards to be carried by qualified fine granular materials, for improving the operating efficiency of ascending air, Vertical Mill body above blanking gap 20 is provided with a circle upwards in wind-guiding ring flat-plate 25 through reducing gradually, have and improve pressure reduction to improve the effect of wind speed.

See Fig. 1, 4 is known, in Vertical Mill body, the top of mill 8 is provided with funnel-form and returns grey cylinder 16, return grey cylinder 16 in leak shape, large mouth upward, little mouth down, the top returning grey cylinder 16 is fixed with powder concentrator 12, the updraft carrying abrasive flour has to pass through powder concentrator 12, could be sent by the discharging opening 15 of Vertical Mill bodies top, powder concentrator 12 drives rotation by powder concentrator reductor 13, it is vertically fixed with rotor blade 14 for one week by double-layer hollow framework and edge and forms, a delineation blades 26 is provided with outside rotor blade 14, Vertical Mill inner body wall is fixed in said stator blade 26 upper end, edge on grey cylinder 16 is fixed on go back in lower end, pan feeding gap is there is and equal and radial skew between wherein adjacent rotor blade 14 and between stator vane 26.Underproof like this material (particle is excessive) can the blade of powder concentrator 12 be stopped, thus is affected by gravity and falls into back grey cylinder 16, and the mill 8 that falls back grinds again, and fineness is ground in raising.

Known see Fig. 3, sparge pipe 22 has been stretched into outside to inside by Vertical Mill body, this sparge pipe 22 spout is positioned at above mill 8 milling zone, sparge pipe 22 can stretch on Vertical Mill body, its position being fixed on Vertical Mill body is adjustable pipe 23, be provided with at adjustable pipe 23 two ends and make spout only along the limiting plate 24 of mill 8 milling zone radial zone activity, thus injected material when conveniently mill 8 milling zone being cleared up or ground.

For convenience of maintenance and regular maintenance, in the middle part of Vertical Mill body, be also provided with maintenance platform 17 and top maintenance platform 18 with tip position.

Vertical Mill operation principle is as follows: material is sent in mill via blanking scraper-trough conveyer 11, and material is admitted to mill 8 center, and Vertical Mill mair motor 5 drives mill 8 to rotate by roller mill speed reducer 4, and mill 8 rotates drive four grinding rollers and carries out rotation.The mill 8 simultaneously rotated produces centrifugal force, and material is moved toward the abrasive areas of grinding roller 9, and grinding roller 9 operates and to grind material.Mill edge crossed by ground material, blown afloat by the hot blast that hot-blast stove 5 is sent into, and enters the powder concentrator 12 above grinding machine.Powder concentrator reductor 13 rotor driven 14 rotates and carries out selecting powder, and fine powder is separated with meal by powder concentrator, and fine powder is collected by discharging opening 15.Thicker particle, falls into mill 8 by time grey cylinder 16 and re-starts grinding, finally complete the overall process of raw mill.

Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.

Claims (2)

1. grind Vertical Mill, it is characterized in that: Vertical Mill body is fixed in concrete foundation (1), mill (8) is driven by rotating power source and level is placed in bottom Vertical Mill, blanking gap (20) is there is between described mill (8) and Vertical Mill inner body wall, described non-ground district, mill (8) center is in the taper raised up, edge grinding district is in the cambered surface outwards raised gradually, and grinding roller (9) to be stretched to above mill (8) milling zone by Vertical Mill side and tilts fixing obliquely;
Rocking arm (10) outer end of described grinding roller (9) is fixed on supporting revolving shaft seat, and is connected with the upset hydraulic cylinder (7) be fixed in concrete foundation (1) by connecting rod;
Described supporting revolving shaft seat is connected with the interstitial fluid cylinder pressure (6) be fixed in concrete foundation (1);
The top that described Vertical Mill body fixes grinding roller (9) region is provided with upset access door, when described grinding roller (9) is positioned at Vertical Mill body, its rocking arm (10) and upset access door, is provided with sealing canvas between Vertical Mill body;
Upwards hot-blast stove outlet (5) of air blast is positioned on the Vertical Mill body in described blanking gap (20), the Vertical Mill body of blanking gap (20) top is provided with one and encloses the wind-guiding ring flat-plate (25) that upwards internal diameter reduces gradually;
Sparge pipe (22) has been stretched into outside to inside by described Vertical Mill body, described sparge pipe (22) spout is positioned at above mill (8) milling zone, described sparge pipe (22) position be fixed on Vertical Mill body is adjustable pipe (23), and described adjustable pipe (23) two ends are provided with and make spout only along the limiting plate (24) of mill (8) milling zone radial zone activity;
Described mill (8) milling zone outer is fixed with a circle blocking material ring (19);
The Vertical Mill body bottom portion in described blanking gap (20) is provided with blanking recovery holes, and blanking gap (20) are provided with the scraper plate (21) being fixed on and mill (8) drawing blanking along bottom in;
The blanking scraper-trough conveyer (11) to the upper conveying of mill (8) is provided with in described Vertical Mill body, described mill (8) top is provided with funnel-form and returns grey cylinder (16), described grey cylinder (16) top of returning is fixed with powder concentrator (12), and the updraft carrying abrasive flour is sent through the discharging opening (15) of powder concentrator (12) by Vertical Mill bodies top.
2. grinding Vertical Mill according to claim 1, it is characterized in that: described powder concentrator (12) is driven by powder concentrator reductor (13) and rotates, it is vertically fixed with rotor blade (14) for one week by double-layer hollow framework and edge and forms, a delineation blades (26) is provided with outside described rotor blade (14), Vertical Mill inner body wall is fixed in described stator vane (26) upper end, the upper edge of grey cylinder (16) is fixed on go back in lower end, there is pan feeding gap and equal and radial skew between adjacent described rotor blade (14) and between stator vane (26).
CN201210480032.7A 2012-11-22 2012-11-22 Vertical grinding mill CN102962115B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210480032.7A CN102962115B (en) 2012-11-22 2012-11-22 Vertical grinding mill

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Application Number Priority Date Filing Date Title
CN201210480032.7A CN102962115B (en) 2012-11-22 2012-11-22 Vertical grinding mill

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CN102962115B true CN102962115B (en) 2015-04-29

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103285975A (en) * 2013-05-22 2013-09-11 江苏新业重工股份有限公司 Vertical type grinder
CN103447789B (en) * 2013-05-31 2016-08-10 上海宝冶集团有限公司 The replacing options of vertical grinder grinding roller roller shell
CN105057038B (en) * 2015-08-26 2017-12-12 河南维科重工机械有限公司 Combination support for large-scale Raymond mill
CN105750021A (en) * 2016-03-03 2016-07-13 天津市帝标建材有限公司 Vertical mill machine for cement production
CN105642408A (en) * 2016-03-22 2016-06-08 中材装备集团有限公司 Novel vertical roll mill with grinded powder outward-guide mechanism
DE102016121926B4 (en) * 2016-11-15 2019-12-24 Neuman & Esser Process Technology Gmbh Mill
CN108514926B (en) * 2018-04-04 2019-09-17 沈阳东北电力调节技术有限公司 A kind of roller-plate Vertical Mill from pressurization fall roller operating condition to grinding operating condition differentiation conversion method

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Publication number Priority date Publication date Assignee Title
CN1055031C (en) * 1994-04-06 2000-08-02 郝志刚 Roller mill
JPH09173882A (en) * 1995-12-27 1997-07-08 Mitsubishi Heavy Ind Ltd Vertical mill
CN2805925Y (en) * 2005-04-28 2006-08-16 沈阳重型机械集团有限责任公司 Large-sized vertical roll mill
CN100443187C (en) * 2006-10-25 2008-12-17 夏纪勇 Vertical roller grinder
CN101380631A (en) * 2007-09-04 2009-03-11 上海重型机器厂有限公司 Separator for coal mill
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CN201216957Y (en) * 2008-05-27 2009-04-08 上海宝田新型建材有限公司 Water injection system inside vertical mill
CN101850286A (en) * 2009-04-01 2010-10-06 王华业 Vertical roller mill with internal screening device
CN201768610U (en) * 2010-08-20 2011-03-23 安徽海螺川崎节能设备制造有限公司 Vertical mill grinding roll control device
CN102389852B (en) * 2011-11-22 2013-10-02 江苏羚羊水泥工程技术有限公司 Multitime-separation high-efficient cement vertical mill

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PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Vertical grinding mill

Effective date of registration: 20191021

Granted publication date: 20150429

Pledgee: Huizhou Merchants Bank Wuhu Beijing road sub branch

Pledgor: Anhui Conch Kawasaki Energy Reservation Equipment Manufacturing Co., Ltd.

Registration number: Y2019340000127

PE01 Entry into force of the registration of the contract for pledge of patent right