CN202752054U - Disk mill - Google Patents
Disk mill Download PDFInfo
- Publication number
- CN202752054U CN202752054U CN 201220382864 CN201220382864U CN202752054U CN 202752054 U CN202752054 U CN 202752054U CN 201220382864 CN201220382864 CN 201220382864 CN 201220382864 U CN201220382864 U CN 201220382864U CN 202752054 U CN202752054 U CN 202752054U
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- bosses
- disk
- mill
- boss
- disc
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Abstract
The utility model discloses a disk mill which comprises a movable abrasive disk (1) and a fixed abrasive disk (2). Two bosses (4) are arranged on the central plane of a processing material cavity (3) of the movable abrasive disk (1), a material polishing tank (5) is arranged between the two bosses (4), protruded petals are arranged on the outer sides of the two bosses (4), the protruded petals (6) are symmetrically distributed on one straight line, the top curve surfaces of the bosses (4) are conical faces, the outer lateral surfaces of the bosses are cylindrical faces, the conical faces at the top of the bosses (4) are parallel to a conical face of the fixed abrasive disk (2), and the diameter of each outer cylindrical face is equal to the diameter of the bottom surface of each top conical face. The disk mill has the advantages of overcoming the defect that a maneuvering abrasive disk of a horizontal disk mill cannot drive all materials to be milled fully, achieving lamination milling along the circumference normal direction in a processing material cavity in the disk mill, enabling materials to be processed fine and providing one choice for optimizing the disk mill.
Description
Technical field
The present invention relates to a kind of disintegrating apparatus, particularly a kind of mill of disc mill.
Background technology
Disc mill is to specify the equipment that uses in DZ/T 0130.2-2006 " People's Republic of China's geological and mineral industry standard---rock mineral analysis sample preparation " the broken sample flow process of gold ore sample.Its groundwork executive item is comprised of movable grinding disc and fixed millstone.Fixed millstone is connected with body, and the charging hole of fixed millstone communicates with feeding-passage on the body.Movable grinding disc is connected with body upper driving main shaft, at transmission main shaft the fine setting locking device is housed, and can axially finely tune movable grinding disc, to guarantee that the discharging slit meets the granularity requirements that mineral prepare sample between movable grinding disc and the fixed millstone.Conical surface on the tradition fixed millstone and movable grinding disc conical surface have jointly formed a preparation sample and have added the labor and materials chamber, and processed preparation material sample enters via charging hole and adds the labor and materials chamber.On the conical surface of movable grinding disc and fixed millstone, 4 fixing protruding lobes are arranged respectively.All there is an abrasive material shaping band at the edge of two mills.
Movable grinding disc rotates around major axes orientation under the drive of motor.Be stored in the preparation material sample in the movable grinding disc, under the promotion of protruding lobe, do high speed rotary motion.And drive all with this and add in the labor and materials chamber material and do corresponding motion, preparation material sample by stressed, motion, change the direction of motion and realize pulverizing, then along slit between fixed millstone and the movable grinding disc and abrasive material shaping band discharge and prepare sample.
Usually when analyzing disc mill, manage to analyze with laminated grinding and shear pulverizer.
Laminated grinding refers to the bed of material is utilized in the situation of pressure-acting, when pressure hour, the altering a great deal of volume, carry out closely knit this moment between the material, make between the particle near by squeezing, keep good contact, then stress rises gradually, and interaction energy mutual between the particle transmits stress, after arriving granule strength, the broken time occurs in particle, and simultaneously owing to the geometric properties of particle and the difference of intensity property, a larger range of stress occurs in fragmentation.Because the continuous appearance of the event of pulverizing, the environment between the particle are also constantly changing, pulverized particle need to be rearranged the position, so the volume of material is still in continuous variation.Enough when grinding time, a coarse granule has been among the fine grain encirclement, and power transmission quite disperses, and improve stress this moment, mainly makes the mutual close contact of granule, just produced clustering phenomena.Utilize the process of compression that above-mentioned three processes of closely knit---pulverizing---conglomeration all should be arranged.
Shear to pulverize the effect that refers to the protruding lobe of fixed millstone and hindered the material that fixed millstone adds in labor and materials the chamber in and rotate (frictional drive), so, the storeroom generation relative motion of the material contact-making surface within two mills add the labor and materials chamber.Be subjected to certain pressure and shearing force effect between the material surface, when shear stress reached the shear strength limit of material, material was just pulverized
Traditional horizontal type structure (the mill face is perpendicular to horizontal plane) defective is: the material between the protruding lobe of fixed millstone causes adding the labor and materials cavity pressure and reduces feed back because lacking geometrical constraint.The as a result rotation of movable grinding disc can't realize driving all materials that enter in the mill and fully pulverize, and laminated grinding and shearing grindability are lower, thus the granularity of impact preparation sample.
Summary of the invention
The technical problem to be solved in the present invention is: movable grinding disc can drive all and enter the material that adds the labor and materials chamber and fully pulverize, and promotes simultaneously laminated grinding and shears grindability, obtains more fine-grained comminuting matter.
The technical solution used in the present invention is: a kind of disc mill, comprise movable grinding disc and fixed millstone, and adding of movable grinding disc has two boss on the central plane of labor and materials chamber, be the material casting grain between two boss, and the two boss outside is protruding lobe.Material casting grain width is not less than fixed millstone charging hole diameter.Totally two and symmetrical point-blank of protruding lobes.The boss top curve surface is taper seat, and lateral surface is the face of cylinder.Boss top taper seat is parallel with the fixed millstone taper seat, the bottom surface equal diameters of the face of cylinder, outside diameter and top taper seat.
Improvement effect of the present invention can and be sheared pulverizing two aspects and explain from laminated grinding:
Laminated grinding: by to the force analysis of mill of the present invention to the crushing material process, can find out:
(1) when the material in the material casting groove along the circumferential direction be thrown into fixed millstone and movable grinding disc add the labor and materials chamber time, the material that along the circumferential direction fixed millstone and movable grinding disc is added in the labor and materials chamber is bestowed normal pressure simultaneously, causes the material that adds in the labor and materials chamber to enter the phase I of laminated grinding---and closely knit.Make between the particle by squeezing closely, keeps good contact, then stress rises gradually, mutual interaction energy transmission stress between the particle.
(2) after being squeezed to sealing with material, the boss outer rim circular arc tangential line direction of material casting groove adds the labor and materials chamber, cause original solid accumulation height to reduce, volume density increases, at this moment, pressure sharply increases, gap between the material particles is more and more less, mutually transmit extrusion stress between the particle, each moves, and adjacent particle changes its relative bearing in the circulation, the interaction force vector also constantly changes, material is subject to external pressure and does the time spent and can produce compression, cause internal stress to concentrate, when stress reaches particle in the most weak a certain bursting stress on axially, this particle will this axially on chipping and pulverizing behavior, thereby realized that the bed of material pulverizes second stage---the process of pulverizing.
(3) when shredding stage finishes, the compaction rate of material is very high, and broken particle can produce conglomeration.Along with the rotation of movable grinding disc, material contact-making surface place has been crushed to the material that is equal to or less than slit between moving, fixed millstone, under the effect of frictional drive, dishes out along the endless belt, slit between two mills.
Because closely knit---pulverizing---conglomeration is the process feature of realizing laminated grinding, therefore, can think to improving the disc mill after movable grinding disc designs to have possessed the function of laminated grinding.
Shear and pulverize: in shearing crushing process, just because packing height, the pressure that adds between the material particles in the labor and materials chamber is large, the relative displacement that two adjacent minim material intervals are occuring equally causes the faying face of little storeroom to be subject to equally shear action and shearing stress.Thereby cause material can pulverize carefullyyer.
The beneficial effect that the present invention brings:
(1) movable grinding disc increases material casting groove structure, fully pulverizes so that movable grinding disc can drive all materials that enter in the mill.
(2) by the material casting effect of material casting groove and the constraint pressurization of boss, increased within mill adds the labor and materials chamber laminated grinding function along the circumference normal direction.
(3) by to the architecture advances of movable grinding disc, add that packing between the material particles the labor and materials chamber in increases, pressure is large, produced equally living shearing pulverizing at little storeroom, cause the material can be pulverized thinner.
Description of drawings
Fig. 1 is the profile of traditional disc mill;
Fig. 2 is the profile of the disc mill after improving;
Fig. 3 is the disc mill movable grinding disc schematic diagram after improving.
The specific embodiment
A kind of disc mill comprises movable grinding disc 1 and fixed millstone 2.Adding of movable grinding disc 1 arranges two boss 4 on 3 central planes of labor and materials chamber.A material casting grain 5 is arranged between two boss 4, and material casting grain 5 width are not less than fixed millstone 2 charging hole diameters.Boss 4 outsides are provided with two protruding lobes 6, and protruding lobe 6 is point-blank symmetrical.Boss 4 top curve surface are taper seat, and lateral surface is the face of cylinder.Boss 4 top taper seats are parallel with fixed millstone 2 taper seats, the bottom surface equal diameters of the face of cylinder, outside diameter and top taper seat.Preparation material sample enters via the charging hole on the fixed millstone 2 and adds labor and materials chamber 3, and movable grinding disc 1 rotates around major axes orientation under the drive of motor, and the material after the pulverizing is dished out by the endless belt, slit between movable grinding disc 1 and the fixed millstone 2.
Claims (5)
1. disc mill, comprise movable grinding disc (1) and fixed millstone (2), it is characterized in that: adding on the central plane of labor and materials chamber (3) of movable grinding disc (1) has two boss (4), is material casting grain (5) between two boss (4), and two boss (4) outside is protruding lobe (6).
2. a kind of disc mill according to claim 1 is characterized in that: material casting grain (5) width is not less than fixed millstone (2) charging hole diameter.
3. a kind of disc mill according to claim 1 is characterized in that: two and symmetrical point-blank of protruding lobes (6) totally.
4. a kind of disc mill according to claim 1, it is characterized in that: boss (4) top curve surface is taper seat, and lateral surface is the face of cylinder.
5. a kind of disc mill according to claim 4, it is characterized in that: boss (4) top taper seat is parallel with fixed millstone (2) taper seat, the bottom surface equal diameters of the face of cylinder, outside diameter and top taper seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382864 CN202752054U (en) | 2012-08-03 | 2012-08-03 | Disk mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382864 CN202752054U (en) | 2012-08-03 | 2012-08-03 | Disk mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202752054U true CN202752054U (en) | 2013-02-27 |
Family
ID=47731249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220382864 Withdrawn - After Issue CN202752054U (en) | 2012-08-03 | 2012-08-03 | Disk mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202752054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755918A (en) * | 2012-08-03 | 2012-10-31 | 贵阳探矿机械厂 | Disc mill |
-
2012
- 2012-08-03 CN CN 201220382864 patent/CN202752054U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755918A (en) * | 2012-08-03 | 2012-10-31 | 贵阳探矿机械厂 | Disc mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130227 Effective date of abandoning: 20140709 |
|
| RGAV | Abandon patent right to avoid regrant |