CN112337578A - Basin-type high-pressure roller mill and powder material grinding method based on basin-type high-pressure roller mill - Google Patents
Basin-type high-pressure roller mill and powder material grinding method based on basin-type high-pressure roller mill Download PDFInfo
- Publication number
- CN112337578A CN112337578A CN202011133931.0A CN202011133931A CN112337578A CN 112337578 A CN112337578 A CN 112337578A CN 202011133931 A CN202011133931 A CN 202011133931A CN 112337578 A CN112337578 A CN 112337578A
- Authority
- CN
- China
- Prior art keywords
- grinding
- basin
- roller
- pressure
- mill
- 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
Images
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
-
- 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
-
- 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
- B02C15/004—Shape or construction of rollers or balls
- B02C15/005—Rollers or balls of composite construction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation
-
- 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
- B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier
Abstract
The invention relates to a basin-type high-pressure roller mill and a powdery material grinding method based on the basin-type high-pressure roller mill, wherein the basin-type high-pressure roller mill comprises a mill shell, a power mechanism, a mill basin, a grinding roller, a guide bent plate, a roller arm support shaft and a pressurizing oil cylinder, wherein the roller surface of the grinding roller corresponds to the pressure-bearing inclined surface of the mill basin to form a grinding surface, and the grinding roller applies pressure to the pressure-bearing inclined surface of the mill basin by means of the thrust of the pressurizing oil cylinder and the roller arm support shaft; the included angle between the pressure-bearing inclined plane of the grinding basin and the horizontal plane is 45-75 degrees, and a material guide curved plate used for guiding ground materials out of the grinding basin in time is arranged behind each grinding roller along the rotation direction of the grinding basin. The grinding method comprises the steps of firstly controlling the material level in the grinding basin to be just capable of burying the pressure-bearing inclined plane of the grinding basin, then controlling the projection pressure of the grinding roller to be 1.2 MPa-2.5 MPa to grind the material, and simultaneously guiding the ground material out of the grinding basin through the material guide bent plate. The invention can better adapt to powdery materials, has large projection pressure of the grinding roller, and can lead out the ground materials in time to avoid repeated grinding, thereby greatly improving the grinding capacity of the roller.
Description
Technical Field
The invention belongs to the technical field of roller grinding, and particularly relates to a basin-type high-pressure roller grinding and a powder material grinding method based on the basin-type high-pressure roller grinding.
Background
The roller mill belongs to material bed grinding, and the grinding efficiency is high, but the premise is that materials can form a stable material bed. The conventional roller mill is not suitable for processing powdery materials because the grinding disc is basically horizontal, materials slide on the grinding disc, and the stability of a material bed is relatively poor, particularly when the particle size of the materials is small.
In addition, because the material bed is extremely unstable, the operation can only be maintained by adopting low pressure, so that the grinding efficiency is very low.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a basin-type high-pressure roller mill and a powder material grinding method based on the basin-type high-pressure roller mill.
The invention is realized in this way, a basin type high-pressure roller mill, including grinding shell, actuating unit, grinding basin, grinding roller, guide bent plate, roller arm fulcrum shaft and pressurized cylinder, the roll surface of the said grinding roller corresponds to bearing inclined plane of the grinding basin and forms the abrasive surface, the grinding roller relies on the thrust of the pressurized cylinder and bears the pressure to the bearing inclined plane of the grinding basin with the help of roller arm fulcrum shaft; the included angle between the pressure-bearing inclined plane of the grinding basin and the horizontal plane is 45-75 degrees, and a material guide curved plate used for guiding ground materials out of the grinding basin in time is arranged behind each grinding roller along the rotation direction of the grinding basin.
In the technical scheme, preferably, the pressure-bearing inclined plane of the grinding basin is relatively recessed, an annular groove is formed in the inner side of the grinding basin, the depth of the annular groove is equivalent to the compaction thickness of the material, and the two sides of the annular groove can limit the pressure-bearing material laterally, so that the pressure resistance of the material bed can be improved.
In the above technical solution, preferably, an included angle between the pressure-bearing inclined plane of the basin and the horizontal plane is 60 °.
In the above technical scheme, preferably, the parallel distance between the grinding roller and the pressure-bearing inclined plane of the grinding basin is 5 mm-15 mm; the cone angle of the grinding roller is matched with the inclination angle of the pressure-bearing inclined plane, so that the grinding roller only rolls relative to the pressure-bearing inclined plane without speed difference.
In the above technical solution, preferably, the material guiding curved plate has a straight edge, the straight edge is close to the pressure-bearing inclined surface to remove the material, and the rest of the material guiding curved plate is curled upward so as to guide the ground material out of the grinding basin.
In the above technical solution, preferably, the axis of the roller arm fulcrum is located on an extension line of the pressure-bearing slope, so that the pressure of the roller arm is completely proportional to the thrust of the pressurization cylinder and is more elastic, and the pressure of the roller arm is not restricted by the structural rigidity.
The method for grinding the powdery material based on the basin-type high-pressure roller mill comprises the steps of firstly controlling the material level in a mill basin to be a pressure-bearing inclined plane which just can bury the mill basin, then controlling the projection pressure of a grinding roller to be 1.2-2.5 MPa, grinding the material, and simultaneously leading the material rolled by the grinding roller out of the mill basin in time through a material guide bent plate.
Compared with the prior art, the invention has the advantages and positive effects that:
1. based on the geometric structure of the grinding basin, the grinding condition of the powdery material is stabilized by improving the material level in the grinding basin to improve the operation stability, and on the basis, the grinding capacity is greatly improved by adopting higher grinding roller pressure; and the materials which are just rolled are timely led out by arranging the material guide bent plate so as to prevent the materials from being repeatedly rolled.
2. The projection pressure of the grinding roller is 1.5-3 times of that of a common grinding roller, and the grinding capacity of the roller mill is greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of a basin-type high-pressure roller mill provided by an embodiment of the invention;
fig. 2 is a top view of a grinding bowl and grinding roll provided by an embodiment of the present invention.
In the figure: 1. a power mechanism; 2. an air inlet ring; 3. basin grinding; 31. a pressure bearing inclined plane; 4. grinding the roller; 5. a material guiding bent plate; 6. a roller arm fulcrum; 7. a pressurizing oil cylinder; 8. selecting a powder machine; 9. shell grinding; 10. a feed pipe; 11. a discharge pipe; the dashed serpentine line with arrows indicates the direction of airflow; the solid serpentine line with arrows indicates the direction of flow.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1 and 2, an embodiment of the present invention provides the bowl-type high-pressure roller mill, which includes a mill shell 9, a power mechanism 1, an air inlet ring 2, a mill bowl 3, a mill roller 4, a roller arm fulcrum 6, a pressurizing oil cylinder 7, a material guiding curved plate 5, a powder concentrator 8, a feeding pipe 10, and a discharging pipe 11; the power mechanism 1 is positioned below the grinding basin 3 and connected with the grinding basin 3, the grinding basin 3 is driven to rotate by the power mechanism 1, and the included angle between the pressure-bearing inclined plane 31 of the grinding basin 3 and the horizontal plane is 45-75 degrees, preferably 60 degrees; the grinding basin 3, the grinding shell 9, the air inlet ring 2 and the powder concentrator 8 are coaxially arranged, the grinding basin 3 actively rotates, and the grinding roller 4 passively rotates; the number of the grinding rollers 4 is at least 2, the grinding rollers are uniformly arranged, each grinding roller 4 is arranged at one end of a roller arm, the roller arm is arranged on a support through a roller arm fulcrum 6, the pressurizing oil cylinder 7 is connected with the other end of the roller arm, the roller surface of each grinding roller 4 corresponds to the pressure-bearing inclined surface 31 of the grinding basin 3 to form a grinding surface, and the grinding rollers 4 apply pressure to the pressure-bearing inclined surface 31 of the grinding basin 3 through the roller arm fulcrum 6 by means of thrust of the pressurizing oil cylinder 7; the powder concentrator 8 is positioned above the mill bowl 3 and is driven independently, the feed pipe 10 is positioned in the middle of the roller mill, and the discharge pipe 11 is positioned at the upper part of the roller mill.
In a preferred embodiment, the pressure-bearing inclined surface 31 of the grinding basin 3 is relatively concave, an annular groove is formed on the inner side of the grinding basin, the depth of the annular groove is equivalent to the compaction thickness of the material, and two sides of the annular groove can limit the pressure-bearing material laterally, so that the pressure-resisting capacity of the material bed is improved.
In a preferred embodiment, the parallel distance between the grinding roller 4 and the pressure-bearing inclined surface 31 of the grinding basin 3 is 5 mm; the cone angle of the grinding roller 4 is matched with the inclination angle of the pressure-bearing inclined surface 31, so that the grinding roller 4 only rolls relative to the pressure-bearing inclined surface 31 without speed difference.
In a preferred embodiment, the guiding plate 5 is located as close to the grinding zone as possible, the guiding plate 5 has a straight edge adjacent to the pressure-bearing inclined surface 31 for removing the material, and the rest of the guiding plate 5 is curled upward to guide the ground material out of the grinding bowl 3.
In a preferred embodiment, the axle center of the roller arm fulcrum shaft 6 is positioned on the extension line of the pressure bearing inclined surface 31, so that the pressure of the grinding roller 4 is completely proportional to the thrust of the pressurizing cylinder 7 and is more elastic.
A powdery material grinding method based on a basin-type high-pressure roller mill is characterized in that a material is fed into a mill shell 9 from a feeding pipe 10 and then falls into a mill basin 3 and rotates along with the mill basin 3, the material level in the mill basin 3 is controlled to be just capable of burying a pressure-bearing inclined plane 31 of the mill basin 3, the projection pressure of a mill roller 4 is controlled to be 2MPa, the material is rolled under the interaction of the mill roller 4 and the mill basin 3, meanwhile, the material rolled by the mill roller 4 is led out of the mill basin 3 through a material guide bent plate 5, and is carried to an upper coarse powder selector 8 by rising air flow for separation, the obtained coarse powder returns to the mill basin 3 through a funnel of the coarse powder selector 8 to be continuously rolled, and fine powder is carried to a discharging pipe 11 by the.
Based on the geometric structure of the grinding basin, the grinding condition of the powdery material is stabilized by improving the material level in the grinding basin 3 to improve the operation stability, and on the basis, the grinding capacity is greatly improved by adopting higher pressure of the grinding roller 4, wherein the projection pressure of the grinding roller 4 is 1.5-3 times that of a common roller mill; and the materials which are just rolled are timely led out by arranging the material guide bent plate 5 so as to prevent the materials from being repeatedly rolled.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (7)
1. A basin-type high-pressure roller mill comprises a mill shell, a power mechanism, a mill basin, a grinding roller, a material guide bent plate, a roller arm support shaft and a pressurizing oil cylinder, wherein a roller surface of the grinding roller and a pressure-bearing inclined surface of the mill basin correspond to form a grinding surface, and the grinding roller applies pressure to the pressure-bearing inclined surface of the mill basin by means of the thrust of the pressurizing oil cylinder and the roller arm support shaft; the method is characterized in that: the included angle between the pressure-bearing inclined plane of the grinding basin and the horizontal plane is 45-75 degrees, and a material guide curved plate used for guiding ground materials out of the grinding basin in time is arranged behind each grinding roller along the rotation direction of the grinding basin.
2. The bowl-type high pressure roller mill according to claim 1, characterized in that: the pressure-bearing inclined plane of the grinding basin is relatively sunken, an annular groove is formed on the inner side of the grinding basin, and the depth of the annular groove is equal to the compaction thickness of the material.
3. The bowl-type high pressure roller mill according to claim 1, characterized in that: the included angle between the pressure-bearing inclined plane of the grinding basin and the horizontal plane is 60 degrees.
4. The bowl-type high pressure roller mill according to claim 1, characterized in that: the parallel distance between the grinding roller and the pressure-bearing inclined plane of the grinding basin is 5-15 mm; the cone angle of the grinding roller is matched with the inclination angle of the pressure-bearing inclined plane, so that the grinding roller only rolls relative to the pressure-bearing inclined plane without speed difference.
5. The bowl-type high pressure roller mill according to claim 1, characterized in that: the material guide bent plate is provided with a straight edge which is close to the pressure-bearing inclined plane to remove materials, and the rest part of the material guide bent plate is curled upwards so as to lead the ground materials out of the grinding basin.
6. The bowl-type high pressure roller mill according to claim 1, characterized in that: the axle center of the roller arm fulcrum shaft is positioned on the extension line of the pressure-bearing inclined plane.
7. A powdery material grinding method based on a basin-type high-pressure roller mill is characterized by comprising the following steps: the material level in the grinding basin is controlled to be just capable of burying the pressure-bearing inclined plane of the grinding basin, the projection pressure of the grinding roller is controlled to be 1.2 MPa-2.5 MPa, the material is ground, and meanwhile, the material rolled by the grinding roller is timely led out of the grinding basin through the material guide bent plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011133931.0A CN112337578A (en) | 2020-10-21 | 2020-10-21 | Basin-type high-pressure roller mill and powder material grinding method based on basin-type high-pressure roller mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011133931.0A CN112337578A (en) | 2020-10-21 | 2020-10-21 | Basin-type high-pressure roller mill and powder material grinding method based on basin-type high-pressure roller mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112337578A true CN112337578A (en) | 2021-02-09 |
Family
ID=74359565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011133931.0A Pending CN112337578A (en) | 2020-10-21 | 2020-10-21 | Basin-type high-pressure roller mill and powder material grinding method based on basin-type high-pressure roller mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112337578A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161346A (en) * | 2007-11-20 | 2008-04-16 | 郝志刚 | Grinding mechanism of vertical grinder |
| CN203610177U (en) * | 2013-11-05 | 2014-05-28 | 长沙深湘通用机器有限公司 | Roller mill |
| CN104437757A (en) * | 2014-09-23 | 2015-03-25 | 南京凯盛国际工程有限公司 | Pre-grinding vertical mill |
| CN204911643U (en) * | 2015-09-09 | 2015-12-30 | 新乡市长城机械有限公司 | Vertical roller mill's indisputable mechanism of row |
| CN105854992A (en) * | 2016-04-05 | 2016-08-17 | 申士富 | Wet method roller type disintegrating mill and grading closed-circuit process thereof |
| 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 |
| CN110801909A (en) * | 2019-11-14 | 2020-02-18 | 中材（天津）粉体技术装备有限公司 | Vertical roller grinding method for grinding dry powdery material |
| JP2020116536A (en) * | 2019-01-25 | 2020-08-06 | 三菱日立パワーシステムズ株式会社 | Solid fuel crushing device and electric power generating plant comprising the same as well as control method for solid fuel crushing device |
| CN211274872U (en) * | 2019-11-26 | 2020-08-18 | 天津水泥工业设计研究院有限公司 | Combined discharging device for machine-made sand vertical mill |
-
2020
- 2020-10-21 CN CN202011133931.0A patent/CN112337578A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161346A (en) * | 2007-11-20 | 2008-04-16 | 郝志刚 | Grinding mechanism of vertical grinder |
| CN203610177U (en) * | 2013-11-05 | 2014-05-28 | 长沙深湘通用机器有限公司 | Roller mill |
| CN104437757A (en) * | 2014-09-23 | 2015-03-25 | 南京凯盛国际工程有限公司 | Pre-grinding vertical mill |
| CN204911643U (en) * | 2015-09-09 | 2015-12-30 | 新乡市长城机械有限公司 | Vertical roller mill's indisputable mechanism of row |
| CN105854992A (en) * | 2016-04-05 | 2016-08-17 | 申士富 | Wet method roller type disintegrating mill and grading closed-circuit process thereof |
| 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 |
| JP2020116536A (en) * | 2019-01-25 | 2020-08-06 | 三菱日立パワーシステムズ株式会社 | Solid fuel crushing device and electric power generating plant comprising the same as well as control method for solid fuel crushing device |
| CN110801909A (en) * | 2019-11-14 | 2020-02-18 | 中材（天津）粉体技术装备有限公司 | Vertical roller grinding method for grinding dry powdery material |
| CN211274872U (en) * | 2019-11-26 | 2020-08-18 | 天津水泥工业设计研究院有限公司 | Combined discharging device for machine-made sand vertical mill |
Non-Patent Citations (1)
| Title |
|---|
| 林宗寿等: "《水泥"十万"个为什么》", 31 July 2012, 武汉理工大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210220875A1 (en) | Device And Method For Rounding Graphite Flakes Of A Graphite Material | |
| CN107684094A (en) | A kind of soybean removing device | |
| CN1049613C (en) | Method and apparatus for crushing material of different grain size | |
| WO2017050223A1 (en) | Pulverizing device | |
| CN107716071A (en) | A kind of primary breakup device that lithium battery pulverizer is produced with ore | |
| US20130146694A1 (en) | Vertical mill | |
| CN112337578A (en) | Basin-type high-pressure roller mill and powder material grinding method based on basin-type high-pressure roller mill | |
| JP2011245372A (en) | Vertical mill | |
| CN109174406B (en) | Polymer water based paint raw materials grinder | |
| JP6728977B2 (en) | Vertical crusher | |
| CN213792063U (en) | Flour mill | |
| CN106345571B (en) | Shaping device for silicon carbide particles | |
| CN102580818A (en) | Vertical grinding machine | |
| JP2011092818A (en) | Vertical mill | |
| CN101322952B (en) | Wax material pulverizing machine | |
| CN206082693U (en) | Silicon carbide particle's shaping device | |
| CN2426382Y (en) | Spherical grinder | |
| CN207430472U (en) | Hammer crusher | |
| CN100408191C (en) | Separation mechanism of grinder | |
| CN216099483U (en) | Be used for branch fine powder processingequipment | |
| CN100438983C (en) | Vertical mill | |
| CN201359432Y (en) | Charging device for feeding rotary disc of rotary hearth furnace and feeding system of rotary hearth furnace | |
| CN202762493U (en) | Direct-current dual-support powerful ring-roll mill | |
| CN214416559U (en) | Coal grinding assembly and coal grinding machine | |
| CN209613172U (en) | A kind of walking-type straw recycling cuber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210209 |
|
| RJ01 | Rejection of invention patent application after publication |