CN109012916B - Planetary ball mill - Google Patents
Planetary ball mill Download PDFInfo
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- CN109012916B CN109012916B CN201811188669.2A CN201811188669A CN109012916B CN 109012916 B CN109012916 B CN 109012916B CN 201811188669 A CN201811188669 A CN 201811188669A CN 109012916 B CN109012916 B CN 109012916B
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- turntable
- ball mill
- discharge
- planetary ball
- frame
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- 238000000227 grinding Methods 0.000 claims abstract description 60
- 238000007599 discharging Methods 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000000498 ball milling Methods 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims description 10
- 239000003082 abrasive agent Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 5
- 230000004308 accommodation Effects 0.000 claims description 3
- 230000037237 body shape Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 3
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 3
- 241001330002 Bambuseae Species 0.000 abstract 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 3
- 239000011425 bamboo Substances 0.000 abstract 3
- 208000024780 Urticaria Diseases 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005551 mechanical alloying Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000010671 solid-state reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
- B02C17/08—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container with containers performing a planetary movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/22—Lining for containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
Abstract
The utility model discloses a planetary ball mill, which comprises a frame, the center pin, the carousel device, a plurality of planetary mill section of thick bamboo and discharging device, the mill section of thick bamboo body rotationally arranges in first through-hole and second through-hole, the mill section of thick bamboo body is including the grinding chamber that is used for the ball-milling and be used for collecting the grinding chamber of ball-milled material, be equipped with the abrasive surface that a plurality of welts and bottom plate concatenation formed in the grinding chamber, a plurality of slits have between welt and/or the bottom plate, the material that grinds gets into the chamber that gathers materials through the slit, the chamber that gathers materials is equipped with the bin outlet, the enclosure includes a plurality of sealing members that establish on the enclosure, a plurality of first discharge gates that distribute in the upper portion of enclosure and a plurality of second discharge gates that distribute in the enclosure lower part of enclosure, a plurality of sealing members sealingly couple the carousel device, negative pressure forming unit is configured to form the negative pressure of predetermined pressure in order to discharge predetermined weight's abrasive from first discharge gate, and the abrasive that surpasses predetermined weight is discharged from second discharge gate based on the effect of gravity.
Description
Technical Field
The invention relates to the fields of crushing, grinding, mechanical force activation, mechanochemical and mechanical alloy processing, in particular to a planetary ball mill.
Background
Ball mills have been known as conventional grinding equipment for over 100 years. It is used as important equipment for refining and pulverizing solid material, and is widely used in metallurgical, chemical, cement, ceramic, building, electric power, medicine, national defense industry and other departments. Especially the ore dressing department in metallurgical industry, the ore grinding operation is very important.
The planetary ball mill grinding cylinder can be horizontally arranged or vertically arranged on the common turntable. The main difference between the two is that the movement modes of the grinding drums are different. The cylinder body of the common ball mill only rotates around a fixed central shaft, the planetary grinding cylinder moves in a complex plane, on one hand, the motor drives the common turntable to rotate, and the grinding cylinder arranged on the common turntable rotates along with the common turntable, so that the planetary grinding cylinder moves in a revolution and a connection manner; on the other hand, the grinding cylinder also rotates around the central shaft of the grinding cylinder to move relatively under the action of the transmission of the gears or the triangular belts. This planar motion of the drum, which has both revolution and rotation, is referred to as planetary motion. The planetary motion of the grinding cylinder is a basic sign of the planetary ball mill as distinguished from the common ball mill. It can be regarded as a new model developed by combining a common ball mill with a centrifugal ball mill.
The planetary high-energy ball mill can crush and grind materials and is widely used in the fields of metallurgy, mineral products, chemical industry, medicine, geology and the like. The planetary ball mill is provided with a plurality of ball milling tanks on the same main shaft turntable, and each ball milling tank rotates, namely, performs planetary motion while revolving around the main shaft. Compared with other ball mills, the ball mill has higher impact force and impact frequency, can better crush and weld powder, is an important device for a mechanical alloying method in material preparation, and is a complex physicochemical process for alloying element atomic scale by repeatedly deforming, cold welding, crushing and refining the material and continuously exposing fresh surfaces by utilizing long-time high-energy impact and rolling between the material, the grinding ball and the ball milling tank in the material preparation process, so that each element atom is mutually diffused or subjected to solid state reaction.
The planetary grinding cylinder is horizontally arranged on the large turntable which is arranged perpendicular to the ground plane, and when in operation, the planetary grinding cylinder not only rotates per se, but also revolves along with the large turntable to form planetary motion. In the moving process, the ball milling tank has no fixed bottom surface, and the grinding balls and the grinding materials in the grinding cylinder are subjected to the combined action of revolution centrifugal force, rotation centrifugal force and gravity in a vertical plane. When the machine rotates, the stress of each point in the tank is continuously changed in size and direction, so that the grinding balls and the grinding materials are collided and extruded violently in high-speed operation, and the grinding efficiency and the grinding effect are greatly improved. Particularly, the ball milling tank is in a horizontal arrangement mode, and has no fixed bottom surface due to autorotation, so that the phenomenon of bottom formation of a part of raw materials is avoided.
In recent years, due to the increase of energy cost and the decrease of ore grade, the reduction of construction investment and production cost is a serious problem facing the mine industry of various countries in the world, the adoption of high-efficiency large-scale equipment is the main trend of the construction of modern mineral processing plants, and the large-scale, continuous feeding and discharging and vibration and noise reduction of the horizontal ball mill are defects in the prior art.
The above information disclosed in the background section is only for enhancement of understanding of the background of the invention and therefore may contain information that does not form the prior art that is already known in the country to a person of ordinary skill in the art.
Disclosure of Invention
In view of the above, an object of the present invention is to overcome the drawbacks of the prior art, and to provide a planetary ball mill which can be made large in size, has high grinding accuracy, is small in vibration noise, and is capable of continuously discharging and significantly improving crushing efficiency.
Thereby effectively prolonging the service life of the subsequent power equipment.
In order to achieve the above object, the present invention provides a planetary ball mill comprising:
a frame;
a central shaft rotatably connected to the frame through a bearing;
a turntable device configured to be rotatable about the central axis, the turntable device comprising,
a first turntable including a first turntable surface perpendicular to the central axis and a first inclined surface located at an edge of the first turntable, the first inclined surface being adjacent to the first turntable surface, the first turntable surface being provided with a first central hole and a plurality of first through holes being centrally symmetrical, the first turntable being vertically fixed to the central axis via the first central hole,
a second turntable arranged parallel to the first turntable, the second turntable including a second turntable surface perpendicular to the central axis and a second inclined surface at an edge of the second turntable, the second inclined surface being adjacent to the second turntable surface and parallel to the first inclined surface, the second turntable surface being provided with a second central hole and a plurality of second through holes being centrally symmetrical, the second turntable being vertically fixed to the central axis via the second central hole, wherein the first through holes and the second through holes are coaxially arranged;
a plurality of planetary grinding drums rotatably disposed between the first turntable surface and the second turntable surface via first through holes and second through holes, the planetary grinding drums comprising,
a connecting shaft connected with the transmission mechanism to enable the planetary mill cylinder to rotate while revolving,
the grinding cylinder body is connected with the connecting shaft and is rotatably arranged in the first through hole and the second through hole, the grinding cylinder body comprises a grinding cavity for ball milling and a collecting cavity for collecting materials after ball milling, a plurality of grinding surfaces formed by splicing a lining plate and a bottom plate are arranged in the grinding cavity, a plurality of slits are arranged between the lining plate and/or the bottom plate, the ground materials enter the collecting cavity through the slits, and a discharge hole is arranged in the collecting cavity;
the discharging device is fixedly connected on the frame and is configured to discharge the abrasive from the discharge hole, the discharging device comprises,
the sealed shell is in sealed connection with the turntable device to form a sealed discharging space, the sealed shell comprises a plurality of sealing elements arranged on the sealed shell, a plurality of first discharging holes distributed on the middle upper part of the sealed shell and a plurality of second discharging holes distributed on the lower part of the sealed shell, the plurality of sealing elements are hermetically coupled with the second turntable,
and a negative pressure forming unit configured to form a negative pressure of a predetermined pressure in the discharge space to discharge a predetermined weight of the abrasive from the first discharge port, and to discharge the abrasive exceeding the predetermined weight from the second discharge port based on the action of gravity.
In the planetary ball mill, the lining plate and/or the bottom plate are/is provided with protrusions.
In the planetary ball mill, the first rotary disc and the second rotary disc are of a truncated cone structure, and the protrusions are of a hemispherical structure.
In the planetary ball mill, a plurality of fixing pieces connect the first inclined surface and the second inclined surface, a gap between the first inclined surface and the second inclined surface forms a discharge cavity, and the discharge port is positioned in the discharge cavity.
In the planetary ball mill, the first rotary disc surface and the second rotary disc surface are respectively provided with a first inner wall and a second inner wall which are coaxial, and the mill cylinder body is tangent to the first inner wall and the second inner wall.
In the planetary ball mill, a first discharge port comprises a discharge flange, a discharge pipe of a negative pressure forming unit is connected to the discharge flange, and a filter screen with a preset aperture is arranged at the first discharge port.
In the planetary ball mill, the closed shell is of a cylindrical structure, and is fixedly connected with the frame through a fastener.
In the planetary ball mill, a flat bottom accommodating part is arranged at the bottom of the closed shell, the abrasive exceeding a preset weight is accommodated in the accommodating part based on the action of gravity, and the abrasive in the accommodating part is discharged through a second discharging hole.
In the planetary ball mill, the closed shell comprises a first shell arranged on the right side of the first rotating disc, a second shell arranged on the left side of the second rotating disc and an annular shell connected with the first shell and the second shell so as to form a closed discharge space in a substantially annular shape.
In the planetary ball mill, the second discharge port is returned to the feed device via a circulation passage to be crushed again.
In the planetary ball mill, the frame comprises,
the first layer of rack is fixedly arranged at the left upper part of the second layer of rack in a bolt or screw mode, and a driving mechanism is fixedly arranged above the first layer of rack;
the second layer of frame, it sets up to frame construction, sets up in the bottommost of whole frame, the right side of second layer of frame is provided with ball-milling body accommodation space with ball-milling body shape assorted.
In the planetary ball mill, four elastic support legs are arranged on the lower surface of the second layer of frame.
In the planetary ball mill, bearing seats are fixedly arranged on the first layer of frame and the second layer of frame, and the central shaft and the hollow connecting shaft are respectively and rotatably connected to the first layer of frame and the second layer of frame through the bearing seats.
The invention has the beneficial effects that:
the planetary ball mill provided by the invention has the advantages that the revolution is stable and the vibration and noise are small on the basis of the maximization of the planetary ball mill, the planetary grinding drums rotatably arranged between the surfaces of the first rotating disc and the second rotating disc through the first through hole and the second through hole rotate along with the revolution of the first rotating disc and the second rotating disc, the first transmission piece and the second transmission piece are mutually matched to enable the connecting shaft to rotate at a speed different from the rotating speed of the central shaft, the rotary disc device can be upsized and stably operated, the vibration and the noise are small, the revolution and the differential rotation are realized through one power source, a plurality of lining plates and bottom plates are arranged in the grinding cavity, a plurality of slits are arranged between the lining plates and/or the bottom plates, the ground materials enter the aggregate cavity through the slits, the crushing precision and the durability of the planetary grinding drums are improved, the discharging device fixedly connected to the frame is configured to continuously discharge the abrasive materials from the discharge hole, the rotary disc device is in a sealed connection with the sealed shell to form a sealed discharging space, the rotary disc device and the fixed sealing shell can reliably seal the rotating rotary disc device, the plurality of the abrasive materials are discharged from the first discharge hole under the preset negative pressure, the preset weight is discharged to the second grinding device in a circulating mode, and the grinding materials are expected to be discharged from the second grinding device under the preset circulating condition, and the grinding device is expected to be discharged under the condition and the high.
Drawings
Fig. 1 is a schematic structural view of a planetary ball mill according to an embodiment of the present invention.
Fig. 2 is a schematic view of a planetary mill tube structure of a planetary ball mill according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a planetary ball mill according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a schematic structural view of a planetary ball mill according to an embodiment of the present invention, which includes:
a frame 100;
a central shaft 200 rotatably connected to the frame 100 through a bearing;
a turntable assembly 300 configured to be rotatable about said central axis 200, said turntable assembly 300 comprising,
a first rotating disc 310, the first rotating disc 310 comprising a first rotating disc surface 311 perpendicular to the central axis 200 and a first inclined surface 312 at an edge of the first rotating disc 311, the first inclined surface 312 abutting the first rotating disc surface 311, the first rotating disc surface 311 being provided with a first central hole 313 and a plurality of first through holes 314 of central symmetry, the first rotating disc 310 being vertically fixed to the central axis 200 via the first central hole 313,
a second turntable 320, the second turntable 320 being arranged in parallel to the first turntable 310 including a second turntable surface 321 perpendicular to the central axis 200 and a second inclined surface 322 at an edge of the second turntable 320, the second inclined surface 322 being adjacent to the second turntable surface 321 and being parallel to the first inclined surface 312, the second turntable surface 321 being provided with a second central hole 323 and a plurality of central symmetrical second through holes 324, the second turntable 320 being vertically fixed to the central axis 200 via the second central hole 323, wherein the first through holes 314 and the second through holes 324 are coaxially arranged;
a plurality of planetary rollers 400, the planetary rollers 400 rotatably disposed between the first turntable surface 311 and the second turntable surface 321, the planetary rollers 400 comprising,
a connection shaft 410 connected to the transmission mechanism so that the planetary mill 400 rotates while revolving with the turntable device 300,
the grinding cylinder body 420 is rotatably arranged in the first through hole 314 and the second through hole 324, the grinding cylinder body 420 comprises a grinding cavity 423 for ball milling and a collecting cavity 424 for collecting ball-milled materials, a plurality of lining plates 425 and a grinding surface 429 formed by splicing a bottom plate 426 are arranged in the grinding cavity 423, a plurality of slits 427 are arranged between the lining plates 425 and/or the bottom plate 426, the ground materials enter the collecting cavity 424 through the slits 427, and a discharge hole 421 is arranged in the collecting cavity 424;
the discharging device 500, the discharging device 500 fixedly connected to the frame 100 is configured to discharge the abrasive from the discharge port 421, the discharging device 500 includes,
a closed housing 510 closing and connecting the turntable device 300 to form a closed discharge space, the closed housing 510 including a plurality of sealing members 511 provided on the closed housing 500, a plurality of first discharge ports 512 distributed at a middle upper portion of the closed housing 510, and a plurality of second discharge ports 513 distributed at a lower portion of the closed housing 510, the plurality of sealing members 511 being sealingly coupled to the second turntable 320,
a negative pressure forming unit 520 configured to form a negative pressure of a predetermined pressure in the discharge space to discharge a predetermined weight of abrasive from the first discharge port 512, and the abrasive exceeding the predetermined weight is discharged from the second discharge port 513 based on the action of gravity.
In a preferred embodiment of the planetary ball mill of the present invention, the backing plate 245 and/or the bottom plate 426 have protrusions 428.
In a preferred embodiment of the planetary ball mill according to the present invention, the first rotary disk 310 and the second rotary disk 320 have a truncated cone structure, and the protrusions 428 have a hemispherical structure.
In a preferred embodiment of the planetary ball mill according to the present invention, a plurality of fixing members 315 connect the first inclined surface 312 and the second inclined surface 322, a gap between the first inclined surface 312 and the second inclined surface 322 forms a discharge cavity, and the discharge port 421 is located in the discharge cavity.
In a preferred embodiment of the planetary ball mill according to the present invention, the first turntable surface 311 and the second turntable surface 321 are respectively provided with a first inner wall and a second inner wall which are coaxial, and the mill cylinder body 420 is tangential to the first inner wall and the second inner wall.
In a preferred embodiment of the planetary ball mill according to the present invention, the first discharge port 512 includes a discharge flange 514, a discharge pipe of the negative pressure forming unit 520 is connected to the discharge flange 514, and the first discharge port 512 is provided with a filter screen having a predetermined aperture.
In a preferred embodiment of the planetary ball mill according to the present invention, the closed housing 520 has a cylindrical structure, and is fixedly connected to the frame 100 via fasteners.
In a preferred embodiment of the planetary ball mill according to the present invention, a flat bottom receiving portion 515 is provided at the bottom of the closed housing 510, and the abrasive exceeding a predetermined weight is received in the receiving portion 515 based on the action of gravity, and the abrasive in the receiving portion 515 is discharged through the second discharge port 513.
In a preferred embodiment of the planetary ball mill according to the present invention, the closed housing 510 includes a first housing 516 provided on the right side of the first turntable 310, a second housing 517 provided on the left side of the second turntable 320, and an annular housing connecting the first housing 516 and the second housing 517 to form a substantially annular closed discharge space.
In a preferred embodiment of the planetary ball mill according to the present invention, the second outlet 513 is returned to the feeding device 600 via a circulation channel to be crushed again.
In the planetary ball mill, the frame comprises,
the first layer of rack is fixedly arranged at the left upper part of the second layer of rack in a bolt or screw mode, and a driving mechanism is fixedly arranged above the first layer of rack;
the second layer of frame, it sets up to frame construction, sets up in the bottommost of whole frame, the right side of second layer of frame is provided with ball-milling body accommodation space with ball-milling body shape assorted.
In the planetary ball mill, four elastic support legs are arranged on the lower surface of the second layer of frame.
In the planetary ball mill, bearing seats are fixedly arranged on the first layer of frame and the second layer of frame, and the central shaft and the hollow connecting shaft are respectively and rotatably connected to the first layer of frame and the second layer of frame through the bearing seats.
For a further understanding of the invention, reference is made to the following examples for further illustration.
Fig. 2 is a schematic structural diagram of a feeding device of a planetary ball mill according to an embodiment of the present invention, as shown in the drawing, two shaft sleeves 411 are fixed on a second turntable 320 so that a connecting shaft 410 is parallel to the central shaft 200, 3, 4 or 6 planetary grinding drums 400 are provided, the transmission mechanism 430 includes a differential gear, the grinding drum body 420 includes a grinding cavity 423 for ball milling and a collecting cavity 424 for collecting materials after ball milling, a plurality of lining plates 425 and a base plate 426 are provided in the grinding cavity 423, the lining plates 425 and/or the base plate 426 have protrusions 428, a plurality of slits 427 are provided between the base plates, the ground materials enter the collecting cavity 424 through the slits, the grinding surface is a cup-shaped grinding surface, and the protrusions 428 are in a hemispherical structure.
In one embodiment, the first and second turntable surfaces 311 and 321 are provided with coaxial first and second inner walls, respectively, which are tangential to the grinding drum body 420. In one embodiment, the planetary mill 400 is integrally formed. The length of the connecting shaft 410 is greater than that of the grinding cylinder body 420, and the connecting shaft 410 is of a hollow structure.
Fig. 3 is a schematic view of a planetary ball mill according to an embodiment of the present invention, as shown, a discharging device 500 fixedly coupled to a frame 100 is configured to discharge an abrasive material from a discharge port 421, the discharging device 500 comprising,
the sealed housing 510 is sealed and connected with the turntable device 300 to form a sealed discharging space, the sealed housing 510 comprises a plurality of sealing elements 511 arranged on the sealed housing 500, a plurality of first discharging holes 512 distributed on the middle upper part of the sealed housing 510 and a plurality of second discharging holes 513 distributed on the lower part of the sealed housing 510, the sealing elements 511 are hermetically coupled with the turntable device 300, the sealed housing 510 is in a cylindrical structure and is fixedly connected with the frame 100 through fasteners, a flat bottom accommodating part 515 is arranged at the bottom of the sealed housing 510, the abrasive materials exceeding a preset weight are accommodated in the accommodating part 515 based on the action of gravity, the abrasive materials in the accommodating part 515 are discharged through the second discharging holes 513, and the sealed housing 510 comprises a first housing 516 arranged on the right side of the first turntable 310, a second housing 517 on the left side of the second turntable 320 and an annular housing connecting the first housing 516 and the second housing 517 to form a substantially annular sealed discharging space.
The negative pressure forming unit 520 is configured to form a negative pressure of a predetermined pressure in the discharge space to discharge a predetermined weight of abrasive from the first discharge port 512, and the abrasive exceeding the predetermined weight is discharged from the second discharge port 513 based on the action of gravity. A negative pressure forming unit 520 is fixed to the closed housing 510, and the negative pressure forming unit 520 includes a vacuum pump.
Industrial applicability
The planetary ball mill of the invention can be manufactured and used in the crushing field.
Although the 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 specific embodiments and application fields, and the above-described specific embodiments are merely illustrative, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous forms of the invention without departing from the scope of the invention as claimed.
Claims (13)
1. A planetary ball mill, comprising:
a frame;
a central shaft rotatably connected to the frame through a bearing;
a turntable device configured to be rotatable about the central axis, the turntable device comprising,
a first turntable including a first turntable surface perpendicular to the central axis and a first inclined surface located at an edge of the first turntable, the first inclined surface being adjacent to the first turntable surface, the first turntable surface being provided with a first central hole and a plurality of first through holes being centrally symmetrical, the first turntable being vertically fixed to the central axis via the first central hole,
a second turntable arranged parallel to the first turntable, the second turntable including a second turntable surface perpendicular to the central axis and a second inclined surface at an edge of the second turntable, the second inclined surface being adjacent to the second turntable surface and parallel to the first inclined surface, the second turntable surface being provided with a second central hole and a plurality of second through holes being centrally symmetrical, the second turntable being vertically fixed to the central axis via the second central hole, wherein the first through holes and the second through holes are coaxially arranged;
a plurality of planetary grinding drums rotatably disposed between the first turntable surface and the second turntable surface via first through holes and second through holes, the planetary grinding drums comprising,
a connecting shaft connected with the transmission mechanism to enable the planetary mill cylinder to rotate while revolving,
the grinding cylinder body is connected with the connecting shaft and is rotatably arranged in the first through hole and the second through hole, the grinding cylinder body comprises a grinding cavity for ball milling and a collecting cavity for collecting materials after ball milling, a plurality of grinding surfaces formed by splicing a lining plate and a bottom plate are arranged in the grinding cavity, a plurality of slits are arranged between the lining plate and/or the bottom plate, the ground materials enter the collecting cavity through the slits, and a discharge hole is arranged in the collecting cavity;
the discharging device is fixedly connected on the frame and is configured to discharge the abrasive from the discharge hole, the discharging device comprises,
the sealed shell is in sealed connection with the turntable device to form a sealed discharging space, the sealed shell comprises a plurality of sealing elements arranged on the sealed shell, a plurality of first discharging holes distributed on the middle upper part of the sealed shell and a plurality of second discharging holes distributed on the lower part of the sealed shell, the plurality of sealing elements are hermetically coupled with the second turntable,
and a negative pressure forming unit configured to form a negative pressure of a predetermined pressure in the discharge space to discharge a predetermined weight of the abrasive from the first discharge port, and to discharge the abrasive exceeding the predetermined weight from the second discharge port based on the action of gravity.
2. A planetary ball mill according to claim 1, wherein: the lining plate and/or the bottom plate are provided with bulges.
3. A planetary ball mill according to claim 2, wherein: the first rotary table and the second rotary table are of cone frustum structures, and the protrusions are of hemispherical structures.
4. A planetary ball mill according to claim 1, wherein: the first inclined surface and the second inclined surface are connected by a plurality of fixing pieces, a discharging cavity is formed by a gap between the first inclined surface and the second inclined surface, and the discharging hole is positioned in the discharging cavity.
5. A planetary ball mill according to claim 1, wherein: the first rotary disc surface and the second rotary disc surface are respectively provided with a first inner wall and a second inner wall which are coaxial, and the grinding cylinder body is tangent to the first inner wall and the second inner wall.
6. The planetary ball mill according to claim 1, wherein: the first discharge port comprises a discharge flange, a discharge pipe of the negative pressure forming unit is connected to the discharge flange, and a filter screen with a preset aperture is arranged at the first discharge port.
7. A planetary ball mill according to any one of claims 1-6, wherein: the closed shell is of a cylindrical structure and is fixedly connected with the frame through a fastener.
8. A planetary ball mill according to any one of claims 1-6, wherein: the bottom of the closed shell is provided with a flat-bottom containing part, abrasive materials exceeding a preset weight are contained in the containing part based on the action of gravity, and the abrasive materials in the containing part are discharged through a second discharging hole.
9. A planetary ball mill according to claim 1, wherein: the closed shell comprises a first shell arranged on the right side of the first rotating disc, a second shell arranged on the left side of the second rotating disc and an annular shell connected with the first shell and the second shell to form a closed discharging space in a substantially annular shape.
10. A planetary ball mill according to claim 1, wherein: the second discharge port returns to the feeding device via the circulation channel to be crushed again.
11. A planetary ball mill according to claim 1, wherein: the machine frame comprises a machine frame body and a machine frame,
the first layer of rack is fixedly arranged at the left upper part of the second layer of rack in a bolt or screw mode, and a driving mechanism is fixedly arranged above the first layer of rack;
the second layer of frame, it sets up to frame construction, sets up in the bottommost of whole frame, the right side of second layer of frame is provided with ball-milling body accommodation space with ball-milling body shape assorted.
12. A planetary ball mill according to claim 11, wherein: four elastic support legs are arranged on the lower surface of the second layer of frame.
13. A planetary ball mill according to claim 11, wherein: bearing seats are fixedly arranged on the first-layer rack and the second-layer rack, and the central shaft and the connecting shaft are respectively and rotatably connected to the first-layer rack and the second-layer rack through the bearing seats.
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