CN110354956A - A kind of mill assembly of medium-speed pulverizer - Google Patents
A kind of mill assembly of medium-speed pulverizer Download PDFInfo
- Publication number
- CN110354956A CN110354956A CN201910599399.2A CN201910599399A CN110354956A CN 110354956 A CN110354956 A CN 110354956A CN 201910599399 A CN201910599399 A CN 201910599399A CN 110354956 A CN110354956 A CN 110354956A
- Authority
- CN
- China
- Prior art keywords
- mill
- medium
- speed pulverizer
- clamping ring
- assembles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000007790 scraping Methods 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000011900 installation process Methods 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/003—Shape or construction of discs or rings
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The present invention provides a kind of mill assembly of medium-speed pulverizer, the integral type mill includes: medium-speed pulverizer, the mill being mounted on medium-speed pulverizer, the mill is the integral structure of monoblock cast, the mounting groove of installation millstone sheet is provided on the mill, the millstone sheet is mounted in the mounting groove of the mill and is fixedly connected by two pins, clamping ring is provided in the middle part of the millstone sheet, the clamping ring and the mill split casting, the clamping ring is fixedly connected by hold-down bolt with the mill, at least two are provided on the side wall of the mill for by scraping plate mechanism of the discharge of materials into dreg discharging box such as pebble coals in raw coal, it mills pressure the invention has the advantages that higher coal pulverizer can be born, the overall structure of mill is simplified simultaneously, not only eliminate the installation procedure of its partial installation, together When reduce mill casting and machining workload, reduce the manufacturing expense of equipment.
Description
Technical field
The invention belongs to powder crushing plant technical fields processed, and in particular to a kind of mill assembly of medium-speed pulverizer.
Background technique
Medium-speed pulverizer is mainly used in the pressurized direct pulverizing coal system of thermal power plant.For raw coal to be milled into one
The coal dust for determining fineness requirement is completed at the same time the drying process to coal dust and coal dust is delivered in boiler furnace and burns.Work as coal-grinding
When machine is run, mill fits through main motor driving speed reducer and rotates, raw coal under the action of frictional force, on millstone sheet
Grinding roller is driven to assemble rotation, the on-load pressure of coal pulverizer is transmitted on loading frame and grinding roller by hydraulic oil unit and drag link mechanism,
It mills to realize to raw coal, the materials such as pebble coal in raw coal are extremely arranged the indoor stone coal discharge of scraper plate by scraping plate mechanism
In slag case.
Mill in old-fashioned mill assembly is cast using separate structure, is divided into two parts up and down, is only passed through three pins
And it is bolted fixation, the on-load pressure of mill born is lower, while there may be screw breakages in use
Situation, the security risk for causing equipment to run increase installation difficulty and the construction time of seperated mill during the installation process；
Using the pin shaft of a fixed millstone sheet, can not solve millstone sheet due to manufacture error bring location tolerance add up it is larger
The phenomenon that, so that the millstone sheet finally installed is will appear the larger phenomenon in gap；The middle promulgated by the State Council of 109718899 A of Publication No. CN
Bright patent discloses a kind of coal pulverizer mill, and the Chinese invention patent of 103769274 A of Publication No. CN discloses a kind of coal-grinding
Machine, mill are all divided into upper millstone and lower millstone, there is above-mentioned technical problem.
In addition, since mill bottom does not have groove, after erecting bed occurs entering rainwater or water inside coal pulverizer, mill
Internal water can not be discharged.Old-fashioned mill compression ring and mill is overall structure, and mill is U-shaped circumferential shapes, is not only
Casting increases difficulty, also easily causes mill casting flaw occur, while also increasing the difficulty of machining；Old-fashioned scraper plate
Mechanism can will cause the object and lower frame rigid contact because occurring the higher object of the hardness such as big iron, bolt in pebble coal
And keep scraping plate mechanism stuck or severely deformed scene, needing to stop mill checks or replaces a whole set of scraper plate, increases the maintenance dimension of equipment
It protects difficulty and extends the overhaul of the equipments construction time, cause coal pulverizer frequent shutdown to overhaul, influence the safe and stable operation of unit；
Since the cone angle in cover board is smaller, only 30 °, the plane time for making raw coal fall in cover board extends, and delays raw coal entrance
Coal pulverizer is milled time in region, and the working efficiency of coal pulverizer is reduced.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of assembly of the mill of medium-speed pulverizer, for reinforcing middling speed
The on-load pressure that coal pulverizer mill can be born, to overcome above-mentioned the deficiencies in the prior art.
The integral type mill of medium-speed pulverizer provided by the invention includes: medium-speed pulverizer, is mounted on medium-speed pulverizer
Mill, the mill is the integral structure of monoblock cast, and the mounting groove of installation millstone sheet is provided on the mill, described
Millstone sheet is mounted in the mounting groove of the mill and is fixedly connected by two pins, the middle part setting of the millstone sheet
There are clamping ring, the clamping ring and the mill split casting, the clamping ring connects by the way that hold-down bolt and the mill are fixed
It connects, at least two is provided on the side wall of the mill for by discharge of materials scraping into dreg discharging box such as pebble coals in raw coal
Trigger structure.
Preferably, be provided with cover board on the mill, the cover board in coniform, the bottom surface and side of the cover board it
Between angle α be 45 °.
Preferably, the clamping ring, clamping ring is monoblock cast structure, and there are three hanging for lifting at clamping ring middle part
Hook.
Preferably, the scraping plate mechanism includes: connecting bracket and the scraper plate that is mounted in connecting bracket, the scraper plate
Shape is rectangular comb shape.
Preferably, the bottom of the mill is provided with for avoiding due in transport and installation process inside mill
The gutter channel of ponding.
Preferably, close to the setting of the position of outer wall, there are two column pin hole, the pins in the mounting groove of the millstone sheet
It is mounted in the column pin hole.
Advantages of the present invention and good effect are:
1, mill of the invention is changed to monoblock cast structure by fission, not only increases the overall stiffness of mill to meet
Mill can bear higher coal pulverizer and mill pressure, while simplify the overall structure of mill, not only eliminate its fission peace
The installation procedure of dress, while the workload of casting and the machining of mill is reduced, reduce the manufacturing expense of equipment.
2, it is two that the pin shaft that millstone sheet is fixed in the present invention is increased by one, preferably avoids millstone sheet due to production
Foozle bring location tolerance adds up larger phenomenon, keeps millstone sheet arrangement more reasonable；In addition, there are at two for mill bottom
Gutter channel is avoided due to inside mill the phenomenon that ponding, water being discharged from gutter channel in transport and installation process
Outside mill.
3, clamping ring of the invention uses cast structure, reduces the casting flaw of original clamping ring Yu mill integrally casting
Generation, the monoblock cast quality of mill and clamping ring can be improved, improve the safe operation coefficient of equipment.
4, the scraper plate in scraping plate mechanism of the invention can effectively be avoided because of coal pulverizer using the comb structure of rectangle
Due to causing blade structure entirety torsional deformation compared with sundries such as big iron or bolts in inside, so that entire scraping plate mechanism needs entirely
Portion's replacement, reduces equipment replacement workload, reduces equipment repair and maintenance workload, improves operation hours.
5, the cone angle of cover board of the present invention is changed to 45 ° by original 30 °, can make raw coal quickly from the cone of cover board
On slide, get rid of raw coal to the region of milling of coal pulverizer, improve the working efficiency of coal pulverizer.
Detailed description of the invention
By reference to the explanation below in conjunction with attached drawing, and with a more complete understanding of the present invention, of the invention is other
Purpose and result will be more clearly understood and understood.In the accompanying drawings:
Fig. 1 is the overall structure diagram according to the embodiment of the present invention.
Fig. 2 is the mill cross-sectional view according to the embodiment of the present invention.
Fig. 3 is the mill bottom view according to the embodiment of the present invention.
Fig. 4 is the scraping plate mechanism structural front view according to the embodiment of the present invention.
Fig. 5 is the covering plate structure cross-sectional view according to the embodiment of the present invention.
Appended drawing reference therein includes: mill 1, millstone sheet 2, clamping ring 3, sunk screw 4, scraping plate mechanism 5, cover board 6, column
Pin 7, gutter channel 8, connecting bracket 5-1, scraper plate 5-2.
Specific embodiment
In the following description, for purposes of illustration, it in order to provide the comprehensive understanding to one or more embodiments, explains
Many details are stated.It may be evident, however, that these embodiments can also be realized without these specific details.
In other examples, one or more embodiments for ease of description, well known structure and equipment are shown in block form an.
Fig. 1-5 shows overall structure diagram according to an embodiment of the present invention.
The present invention includes: mill 1, millstone sheet 2, clamping ring 3, sunk screw 4, scraping plate mechanism 5, cover board 6, pin 7,
In, mill 1 is fixed on the top of speed reducer, and mill 1 is the integral structure of monoblock cast, is provided with installation on the mill 1
The mounting groove of millstone sheet 2, close to the setting of the position of outer wall there are two column pin hole in the mounting groove of millstone sheet 2, the millstone sheet 2 is pacified
In the mounting groove of the mill 1, millstone sheet 2 is fixed in the mounting groove of millstone sheet 2 by two pins 7, under pin 7
End is mounted in column pin hole, and the middle part of the millstone sheet 2 is provided with clamping ring 3, the clamping ring 3 casting seperated with the mill 1
It makes, the clamping ring is bolted by 11 sunk screws 4 with the mill 1, and there are three for lifting by crane at clamping ring 3 middle part
Suspension hook.
Refering to Fig. 3, multiple screw threads connecting with speed reducer top are uniformly arranged on the inner ring of 1 bottom surface of mill of the invention
Hole, the mill 1 bottom setting there are two for avoid due in transport and installation process inside mill ponding stream
Sink 8.
Be arranged refering to Fig. 4, on 1 side wall of mill of the invention there are two for by discharge of materials such as pebble coals in raw coal extremely
Scraping plate mechanism 5 in dreg discharging box, the scraping plate mechanism 5 include: connecting bracket 5-1 and are mounted on connecting bracket 5-1 by bolt
On scraper plate 5-2, the scraper plate 5-2 shape be in rectangle comb shape.
Refering to Fig. 5, cover board 6 is provided on mill 1 of the invention, the cover board 6 is in coniform, the bottom surface of the cover board 6
Angle α between side is 45 °.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (6)
1. a kind of mill of medium-speed pulverizer assembles, comprising: medium-speed pulverizer, the mill being mounted on medium-speed pulverizer are special
Sign is that the mill is the integral structure of monoblock cast, and the mounting groove of installation millstone sheet is provided on the mill, described
Millstone sheet is mounted in the mounting groove of the mill and is fixedly connected by two pins, the middle part setting of the millstone sheet
There are clamping ring, the clamping ring and the mill split casting, the clamping ring connects by the way that hold-down bolt and the mill are fixed
It connects, at least two is provided on the side wall of the mill for by discharge of materials scraping into dreg discharging box such as pebble coals in raw coal
Trigger structure.
2. a kind of mill of medium-speed pulverizer according to claim 1 assembles, which is characterized in that be provided on the mill
Cover board, for the cover board in coniform, the angle α between the bottom surface and side of the cover board is 45 °.
3. a kind of mill of medium-speed pulverizer according to claim 1 assembles, which is characterized in that the clamping ring clamps
Ring is monoblock cast structure, and there are three the suspension hooks for lifting at clamping ring middle part.
4. a kind of mill of medium-speed pulverizer according to claim 1 assembles, which is characterized in that the scraping plate mechanism packet
Include: connecting bracket and the scraper plate being mounted in connecting bracket, the shape of the scraper plate are rectangular comb shape.
5. a kind of mill of medium-speed pulverizer according to claim 1 assembles, which is characterized in that the bottom of the mill is set
Be equipped with for avoid due in transport and installation process inside mill ponding gutter channel.
6. a kind of mill of medium-speed pulverizer according to claim 1 assembles, which is characterized in that the installation of the millstone sheet
Close to the setting of the position of outer wall there are two column pin hole in slot, the pin is mounted in the column pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910599399.2A CN110354956A (en) | 2019-07-04 | 2019-07-04 | A kind of mill assembly of medium-speed pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910599399.2A CN110354956A (en) | 2019-07-04 | 2019-07-04 | A kind of mill assembly of medium-speed pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110354956A true CN110354956A (en) | 2019-10-22 |
Family
ID=68217957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910599399.2A Pending CN110354956A (en) | 2019-07-04 | 2019-07-04 | A kind of mill assembly of medium-speed pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110354956A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2193850A1 (en) * | 2008-12-04 | 2010-06-09 | VSE Aktiengesellschaft | Coal mill |
| CN202336811U (en) * | 2011-11-29 | 2012-07-18 | 台钻科技（郑州）有限公司 | Diamond grinding disk draining device |
| CN203540629U (en) * | 2013-11-12 | 2014-04-16 | 北京新源宝通电力设备有限公司 | Gradually-changed rolling type HP (High Power) coal mill |
| CN105233917A (en) * | 2015-11-07 | 2016-01-13 | 李菊 | Soybean powder processing machine |
| CN206793861U (en) * | 2017-05-24 | 2017-12-26 | 中天合创能源有限责任公司 | A kind of efficient compound coal pulverizer |
| CN108085607A (en) * | 2017-12-20 | 2018-05-29 | 马鞍山市盛磊耐磨合金制造有限公司 | A kind of HP lining plate of coal grinder |
| CN207839117U (en) * | 2017-12-12 | 2018-09-11 | 济南重工股份有限公司 | A kind of mill lid of medium-speed pulverizer |
| CN109395837A (en) * | 2018-09-04 | 2019-03-01 | 北京慧峰仁和科技股份有限公司 | A kind of medium-speed pulverizer mill fluidizer and its application method |
| CN210965346U (en) * | 2019-07-04 | 2020-07-10 | 中国电建集团长春发电设备有限公司 | Millstone assembly of medium-speed coal mill |
-
2019
- 2019-07-04 CN CN201910599399.2A patent/CN110354956A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2193850A1 (en) * | 2008-12-04 | 2010-06-09 | VSE Aktiengesellschaft | Coal mill |
| CN202336811U (en) * | 2011-11-29 | 2012-07-18 | 台钻科技（郑州）有限公司 | Diamond grinding disk draining device |
| CN203540629U (en) * | 2013-11-12 | 2014-04-16 | 北京新源宝通电力设备有限公司 | Gradually-changed rolling type HP (High Power) coal mill |
| CN105233917A (en) * | 2015-11-07 | 2016-01-13 | 李菊 | Soybean powder processing machine |
| CN206793861U (en) * | 2017-05-24 | 2017-12-26 | 中天合创能源有限责任公司 | A kind of efficient compound coal pulverizer |
| CN207839117U (en) * | 2017-12-12 | 2018-09-11 | 济南重工股份有限公司 | A kind of mill lid of medium-speed pulverizer |
| CN108085607A (en) * | 2017-12-20 | 2018-05-29 | 马鞍山市盛磊耐磨合金制造有限公司 | A kind of HP lining plate of coal grinder |
| CN109395837A (en) * | 2018-09-04 | 2019-03-01 | 北京慧峰仁和科技股份有限公司 | A kind of medium-speed pulverizer mill fluidizer and its application method |
| CN210965346U (en) * | 2019-07-04 | 2020-07-10 | 中国电建集团长春发电设备有限公司 | Millstone assembly of medium-speed coal mill |
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| 杨为雄;: "MPS125磨煤机的改造", 冶金丛刊, no. 02, 15 April 2010 (2010-04-15), pages 43 - 45 * |
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