CN110586258B - Planetary ball mill for industrial use - Google Patents

Planetary ball mill for industrial use Download PDF

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Publication number
CN110586258B
CN110586258B CN201910786879.XA CN201910786879A CN110586258B CN 110586258 B CN110586258 B CN 110586258B CN 201910786879 A CN201910786879 A CN 201910786879A CN 110586258 B CN110586258 B CN 110586258B
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China
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grinding
gear
oil
main shaft
rotating main
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CN110586258A (en
Inventor
刘成华
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Wuhan Yuge Power Equipment Co ltd
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Wuhan Yuge Power Equipment Co ltd
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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
    • 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
    • B02C17/10—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 one or a few disintegrating members arranged in the container
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

The invention discloses an industrial planetary ball mill, which solves the problem that a gear assembly used for driving a grinding cylinder to rotate reversely in the planetary ball mill in the prior art cannot be effectively lubricated, and has the technical key points that: the grinding device comprises a grinding drum, a rotating main shaft fixedly connected with a grinding disc for mounting the grinding drum, and a gear assembly which is used for transmitting the grinding drum to enable the grinding drum to rotate reversely, wherein an oil cavity filled with lubricating oil is arranged on a rack between the rotating main shaft and the grinding drum, the oil cavity is communicated with the gear assembly, the gear assembly comprises a fixed gear fixedly mounted on the rack, a planetary gear fixedly mounted at the end part of the grinding drum and a gap bridge gear rotatably mounted on the grinding disc and meshed with the fixed gear and the planetary gear, an oil feeding hole penetrating through the inner wall of the fixed gear is radially formed in the root. Through above-mentioned scheme, realized carrying out effective lubrication to the gear assembly that drives grinding vessel antiport when the planetary rotation of grinding vessel.

Description

Planetary ball mill for industrial use
Technical Field
The invention relates to the technical field of ball mills, in particular to a planetary ball mill for industrial use.
Background
The ball mill is the key equipment for crushing the materials after the materials are crushed. The ball mill is composed of horizontal cylinder, hollow feeding and discharging shaft and grinding head, the cylinder is long cylinder, the grinding body is installed in the cylinder, the cylinder is made of steel plate, and is fixed with the cylinder by steel lining plate, the grinding body is generally steel ball, and is loaded into the cylinder according to different diameters and a certain proportion, the grinding body can also be steel section.
The material is selected according to the granularity of the grinding material, the material is loaded into the barrel body from the hollow shaft at the feeding end of the ball mill, when the ball mill barrel body rotates, the grinding body and the material are attached to the barrel body lining plate and taken away by the barrel body at the initial stage under the action of inertia and centrifugal force and friction force, when the ball mill barrel body is taken to a certain height, the grinding body and the material are thrown off under the action of gravity of the grinding body, the grinding body and the material fall off in the process, and the grinding body breaks the material in the barrel body like a projectile body.
In order to realize the process, the grinding body and the material can be thrown off under the action of self gravity when being taken to a certain height, the centrifugal force generated by the cylinder in the rotating process is required to be smaller, and the grinding body and the material are prevented from being continuously attached to the inner wall of the cylinder in the rotating process of the cylinder and cannot be ground. Therefore, under the condition of ensuring the grinding amount of the existing ball mill, the diameter of the cylinder is often larger, and the rotating grinding speed is controlled to be relatively smaller, so that the centrifugal force generated when the grinding body and the material in the cylinder rotate along with the cylinder is smaller than the gravity of the grinding body and the material in the cylinder. When a large-volume ball mill is operated under the condition of being limited by the gravity of the grinding bodies and materials, the processing efficiency of the ball mill is very low relative to the production cost of the ball mill.
For the problem that the ball mill mainly depends on the self weight of a grinding body and materials to carry out throwing movement in a cylinder body, a planetary ball mill for experiments exists in the prior art, and can refer to the Chinese patent with the publication number of CN208990913U, and the ball mill comprises a rotating platform, a rotating frame, a planetary outlet set and a driving motor; the grinding cylinder is arranged on the rotating frame, and the planetary output wheel set comprises a sun wheel, a planet wheel and an inner gear ring; the driving motor drives the sun wheel to rotate, and the rotating platform rotates along with the sun wheel; a clutch moving block is arranged between the rotating frame and the planet wheel, the clutch moving block is connected with the rotating frame in a spline mode, the clutch moving block is connected with the planet wheel in a friction plate contact mode, and the clutch moving block can reciprocate along the axial direction of the rotating frame and the planet wheel.
When the planetary ball mill is used, the grinding cylinder provided with the grinding bodies and materials revolves along with the rotating platform, and the grinding body performs autorotation opposite to the rotating direction of the rotating platform under the action of the planetary output wheel set.
However, the planetary ball mill has too high rotation speed in the operating state, and the rotation and revolution of the grinding cylinder are synchronously realized under the transmission of the gear set, which causes the heat generated in the gear set during the transmission process, especially during the high-speed rotation of the gear set, because the centrifugal force is large, the lubricating oil can not be conveyed to the teeth meshed with the gears from the outer side of the gears, and can not be effectively adhered to the gears, so that the heating and abrasion degree of the planetary ball mill can be more obvious under the condition that the effective lubrication can not be obtained during the transmission between the gear sets, and the damage rate of the equipment is too large.
Based on the problems, the production and manufacture of the planetary ball mill in the prior art are only stopped in the laboratory planetary ball mill with small volume and short grinding time, and the high-strength and high-smoothness refined gear is selected in the gear set, so that the planetary ball mill for experiments can be normally used. In the industry, under the conditions of large equipment volume, large quantity of materials to be ground and long operation time, the industrial planetary ball mill in the prior art is difficult to effectively lubricate a transmission gear set, and further still uses an old ball mill, so that the production efficiency is not high.
Disclosure of Invention
The invention aims to provide a planetary ball mill for industrial use, which aims to effectively lubricate a gear assembly for driving a grinding cylinder to rotate when the grinding cylinder rotates in a planetary way.
The invention is realized by the following technical scheme:
a planetary ball mill for industrial use comprises a frame and a rotating main shaft rotatably arranged on the frame, wherein two ends of the rotating main shaft are fixedly connected with millstones rotatably arranged on the frame, and a grinding cylinder with two open ends is rotatably arranged between the two millstones; the grinding machine is characterized in that one end of the rotating main shaft is connected with a driving device, a gear assembly used for driving the grinding cylinder to rotate is in transmission connection between the rotating main shaft and the grinding cylinder, the rotating direction of the grinding cylinder is opposite to the rotating direction of the rotating main shaft, an oil cavity filled with lubricating oil is arranged on a rack between the rotating main shaft and the gear assembly, the oil cavity is communicated with the gear assembly, the gear assembly comprises a fixed gear fixedly arranged on the rack, a planetary gear coaxially and fixedly arranged at the end part of the grinding cylinder and a carrier gear rotatably arranged on the grinding disc and meshed with the fixed gear and the planetary gear at the same time, an oil feeding hole penetrating through the inner wall of the fixed gear is radially formed in the root part of the fixed gear, and the oil feeding hole is.
By adopting the technical scheme, the two grinding discs are rotatably arranged on the rack and are connected with the rotating main shaft, so that the grinding discs can be driven to synchronously rotate when the driving device drives the rotating main shaft to rotate; the fixed gear is fixed on the frame and is stationary, so that the gap bridge gear rotates in the same direction under the action of the fixed gear when rotating along with the grinding disc, and then the planetary gear meshed with the gap bridge gear is driven to rotate when rotating, and the rotating direction of the planetary gear is opposite to that of the rotating main shaft, so that the planetary rotation of the grinding cylinder on the grinding disc is realized. In the process, when the lubricating oil in the oil cavity permeates into the oil feeding hole of the fixed gear and flows to the tooth root of the fixed gear, the lubricating oil can be attached to the gap bridge gear in the rotation process of the gap bridge gear, then the planetary gear is attached to the lubricating oil in the contact process of the planetary gear and the gap bridge gear in the rotation process of the gap bridge gear, so that the internal gear in the gear assembly is integrally lubricated, the lubricating effect of the gear assembly can still be ensured when the grinding cylinder and the rotating main shaft are in high-speed transmission, the difference from the prior art is that the lubricating oil is input from the innermost part of the gear assembly in the integral process, the lubricating oil can still enter the surface of the next gear in the process of outwards moving under the centrifugal force in the rotation process of each gear, and finally three groups of gears are lubricated, so that the integral equipment can still keep a better lubricating state when running at high speed, and the generation of overhigh heat caused by excessive friction is avoided, the equipment can stably run for a long time, and is further suitable for industrialized production and processing of the planetary ball mill with large volume and long time.
Further setting the following steps: the oil feeding hole is formed in the lowest position of the circumferential position of the fixed gear.
Through adopting above-mentioned technical scheme, the oil feed hole is seted up in the lowest of fixed gear and can is made the lubricating oil of oil intracavity can continue the flow to the bottom tooth root department of fixed gear under the action of gravity to can adhere to lubricating oil at the continuous rotatory in-process of intermediate gear every time the intermediate gear rotates to the bottom of fixed gear, realize continuous lubrication.
Further setting the following steps: the gear assembly is externally provided with a gear box, the grinding disc is connected with an oil pump for recovering the lubricating oil at a position, far away from the rotating main shaft, of the gear box, and the output end of the oil pump is communicated with the oil cavity.
Through adopting above-mentioned technical scheme, the oil pump is kept away from with the gear box and is rotated epaxial position intercommunication and can retrieve the lubricating oil that finally breaks away from the gear assembly under the centrifugal force effect to overcome centrifugal force and squeeze into the oil intracavity again under the oil pump effect, realize the cyclic utilization of lubricating oil, make this equipment internal gear subassembly can keep long-time lubricated state, make equipment reliable operation, save the cost.
Further setting the following steps: the utility model discloses a lubricating oil purification device, including main shaft, oil pump output end, oil pump output end, the oil chamber that rotates, the oil chamber is inside to be the cavity setting, the oil pump output end with the inside intercommunication of main shaft rotates, be equipped with clean oil room and the dirty oil room that cuts off each other in the oil chamber, the dirty oil room with the inside intercommunication of main shaft rotates, the dirty oil room is in be connected with the absolute oil device who is used for purifying lubricating oil in the frame, the output of absolute oil device with the clean oil room intercommunication.
By adopting the technical scheme, the oil cavity is arranged between the rotating main shaft and the rack, the position is unchanged, so that the lubricating oil can be sent back to the oil cavity by the oil pump in the rotating process, the output end of the oil pump is connected with the rotating main shaft which is hollow inside and is relatively static with the oil pump, and meanwhile, the rotating main shaft is connected with the oil cavity, so that the lubricating oil can finally return to the oil cavity, and the smooth connection of the oil pump and the oil cavity is realized. Meanwhile, the lubricating oil enters the turbid oil chamber after returning to the oil chamber again and continues to enter the oil purifying device, so that the used lubricating oil is cooled and filtered, the lubricating effect when the lubricating oil enters the gear assembly from the oil purifying chamber through the oil feeding hole again is guaranteed, and the gear assembly keeps a good working effect in continuous operation.
Further setting the following steps: and a driving shaft of the oil pump extends into the gear box and is in meshed transmission connection with the planetary gear.
Through adopting above-mentioned technical scheme, make planetary gear can rotate at the drive shaft of rotation in-process synchronous drive oil pump, and then make the oil pump take out the recovery from the gear box with used lubricating oil, can carry out work when realizing that the oil pump follows the mill and rotates.
Further setting the following steps: the gear assembly is kept away from one side of mill is provided with and is on a parallel with the auxiliary frame plate of mill, the auxiliary frame plate is close to the interior edge of frame with the frame is sealed, the outer edge of auxiliary frame plate with sealing connection has annular frame plate clamping ring between the mill week edge, the auxiliary frame plate with the mill and the frame plate clamping ring constitutes the gear box, the grinding cylinder tip passes mill and auxiliary frame plate and with mill and auxiliary frame plate rotate to be connected.
Through adopting above-mentioned technical scheme, constitute the gear box with the help of supplementary frame plate and mill and frame plate clamping ring, realize the multi-functional utilization to the mill, avoid recycling too much material to carry out the preparation installation of gear box, the installation effect that supplementary frame plate was worn to establish to the grinding vessel simultaneously also makes the grinding vessel is more stable.
Further setting the following steps: four groups of grinding cylinders are arranged between the two grinding discs, the four groups of grinding cylinders are arranged on the rotating main shaft at equal angular intervals in the circumferential direction, and the planetary gear, the gap bridge gear and the oil pump are arranged in the gear box corresponding to the four groups of grinding cylinders.
Through adopting above-mentioned technical scheme, when setting up multiunit grinding vessel and gear assembly and improving material machining efficiency, can make whole equipment more high in the stability of rotation in-process, make each rotate connecting portion and gear all directions atress when connecting comparatively even, effectively prolong the life of this equipment.
Further setting the following steps: and a pull rod with two ends respectively fixedly connected to the two grinding discs is arranged between the grinding discs, and the pull rod is parallel to the axial direction of the rotating main shaft.
By adopting the technical scheme, the abrasive discs at the two ends are stronger in integrity by virtue of the pull rod, so that when the driving device drives one end of the rotating main shaft to rotate, the abrasive disc far away from the end can be subjected to the driving force from the rotating main shaft and can also be subjected to the driving force from the pull rod, and the whole equipment can move more stably when in operation.
Further setting the following steps: the other end of the rotating main shaft is connected with a feeding device, the feeding device comprises a feeding bent pipe and a spiral feeder, the feeding bent pipe is rotatably communicated with an opening in the end part of the grinding cylinder, the spiral feeder is used for conveying materials to the feeding bent pipe, a feeding shaft cylinder is rotatably installed on the rack and is arranged between the feeding bent pipe and the spiral feeder, and the feeding shaft cylinder is rotatably sleeved outside a feeding end of the spiral feeder; the frame is provided with a negative pressure aggregate device at one side far away from the spiral feeder.
Through adopting above-mentioned technical scheme, feeding shaft section of thick bamboo rotates with screw feeder and frame to be connected, and rotates when feeding return bend tip and grinding vessel intercommunication to be connected, makes feeding shaft section of thick bamboo and feeding return bend rotate the time screw feeder can send the material into the grinding vessel smoothly with the help of the negative pressure device that gathers materials, and the material after final processing is then followed the grinding vessel other end and is inhaled to the negative pressure device that gathers materials in, realizes collecting and sending to next station.
In conclusion, the beneficial technical effects of the invention are as follows:
(1) lubricating oil can be continuously fed into the gear assembly driving the grinding cylinder to rotate in the planetary rotation process of the grinding cylinder for lubrication, so that the equipment can stably run for a long time;
(2) lubricating oil circulates in the oil cavity, the gear assembly and the oil purifying device by virtue of the oil pump, so that the used lubricating oil enters the gear assembly again after treatment, the cost is reduced, and the using effect of the lubricating oil is guaranteed.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 2 is a schematic sectional view of the driving end structure of the present invention;
fig. 3 is a schematic layout of the gear assembly of the present invention.
Reference numerals: 1. a frame; 2. rotating the main shaft; 3. a transmission end; 4. a feeding end; 51. a drive motor; 52. a screw conveyor; 61. a transmission end bearing seat; 62. a feed end bearing block; 7. a feed shaft barrel; 8. a pull rod; 9. a grinding disc; 10. a grinding cylinder; 11. a feeding bent pipe; 12. a gear case; 13. an auxiliary frame plate; 14. a frame plate connecting ring; 15. oil sealing; 16. a fixed gear; 17. a planetary gear; 18. a carrier gear; 19. an oil chamber; 20. an oil purifying chamber; 21. a turbid oil chamber; 22. perforating; 23. an oil purification device; 24. an oil feed hole; 25. an oil pump; 26. oil pumping gear.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, a planetary ball mill for industrial use, which is disclosed by the present invention, comprises a frame 1 and a rotating main shaft 2, both ends of which are rotatably arranged on the frame 1. One end of the rotating main shaft 2 is connected to a driving device for driving the rotating main shaft 2 to rotate outside the frame 1, and for convenience of description, the end is defined as a transmission end 3. The other end of the rotating main shaft 2 is connected to a screw conveyor 52 for conveying the material to the planetary ball mill, which end defining the rotating main shaft 2 is the feed end 4.
Referring to fig. 1, in order to rotatably mount the rotating main shaft 2, a driving end bearing seat 61 is disposed at the frame 1 on one side of the driving end 3, and a bearing for mounting the rotating main shaft 2 is installed in the driving end bearing seat, the driving end 3 of the rotating main shaft 2 horizontally penetrates through the driving end bearing seat 61 and the inner bearing thereof, and is connected with a driving device at the penetrating end, and the driving device is a driving motor 51.
Referring to fig. 1, a feeding end bearing seat 62 is arranged at the frame 1 on one side of the feeding end 4 of the rotating main shaft 2, and the installation mode of the transmission end 3 of the rotating main shaft 2 is different from that of the feeding end 7 for feeding, the end part of the feeding end 4 is fixedly connected with the feeding shaft cylinder 7 for feeding, the end part of the feeding shaft cylinder 7 close to the rotating main shaft 2 is sealed and fixedly connected with the feeding end 4, the end part far away from the rotating main shaft 2 is arranged in an open mode, and the rotating sleeve is arranged on the outer wall of the output end of the spiral. The feed shaft cartridge 7, during its extended connection to the screw conveyor 52, projects into the feed-end bearing block 62 and is rotatably mounted on the machine frame 1 by means of bearings arranged in the feed-end bearing block 62.
Referring to fig. 1, the drive end 3 of the rotating main shaft 2 is rotatably connected with the frame 1 by two bearing seats and bearings therein, and the feed end 4 of the rotating main shaft 2 and the feed shaft cylinder 7 are rotatably connected with the frame 1 and the screw conveyor 52.
Referring to fig. 1, a grinding disc 9 which is perpendicular to the axial direction of the rotating main shaft 2 is fixedly connected to both the transmission end 3 and the feeding end 4 of the rotating main shaft 2. The grinding disc 9 and the rotating main shaft 2 are fixedly connected through the arranged expansion sleeve. Four groups of grinding cylinders 10 which are parallel to the rotating main shaft 2 and are internally provided with grinding bodies are arranged between the two grinding discs 9. The diameter of the two ends of the grinding cylinder 10 is smaller than that of the middle cylinder, and the two ends of the grinding cylinder 10 are both open. The four groups of grinding cylinders 10 are circumferentially arranged and are arranged at equal angular intervals. Both ends of the grinding cylinder 10 penetrate through the two grinding discs 9 and are in rotary connection with the grinding discs 9 through bearings arranged on the grinding discs 9. Meanwhile, a pull rod 8 with two ends respectively fixedly connected to the two grinding discs 9 is arranged between the two grinding discs 9, the pull rods 8 are parallel to the axial direction of the rotating main shaft 2, four groups of pull rods 8 are arranged, and the pull rods are distributed between the two grinding discs 9 at equal angular intervals along the circumferential direction.
Referring to fig. 1, one end of the grinding cylinder 10 close to the feeding shaft cylinder 7 is rotatably connected with a feeding bent pipe 11 through a bearing, and the other end of the feeding bent pipe 11 is fixedly connected with the outer wall of the end part of the feeding shaft cylinder 7 and is communicated with the feeding shaft cylinder 7. On the other hand, a negative pressure aggregate device (not shown) for sucking out the material in each grinding cylinder 10 is installed on the circumferential side of the drive end bearing seat 61. And then after the screw conveyer 52 is started, the material entering from the feeding hole of the screw conveyer 52 enters the feeding shaft barrel 7 and then enters the grinding barrel 10 by the feeding bent pipe 11 under the action of the negative pressure material collecting device.
Referring to fig. 1, to achieve that the grinding cylinder 10 is operable to rotate circumferentially in a direction opposite to the direction of rotation of the grinding discs 9 to form a planetary rotation pattern, a gear assembly and a gear box 12 housing the gear assembly are provided between the drive end 3 of the rotating shaft and the grinding cylinder 10.
Referring to fig. 1 and 2, the gear box 12 is composed of an auxiliary frame plate 13 disposed on the other side of the end grinding disc 9 of the rotation main shaft 2 and a frame plate connecting ring 14 connecting the end grinding disc 9 and the auxiliary frame plate 13. The auxiliary frame plate 13 is annularly arranged and parallel to the grinding disc 9, and the end part of the grinding cylinder 10 passes through the grinding disc 9 and then passes through the auxiliary frame plate 13 again and is rotatably connected with the auxiliary frame plate 13 through a bearing. An oil seal 15 for sealing is arranged between the circumferential inner edge of the auxiliary frame plate 13 and the outer wall of the transmission end bearing seat 61. The frame plate connecting ring 14 is in a ring-cylinder structure with two open ends, and the two side peripheral edges of the frame plate connecting ring are respectively and fixedly connected with the peripheral edge of the grinding disc 9 and the outer edge of the auxiliary frame plate 13 in a sealing way. Thus, a closed gear box 12 is formed among the grinding disc 9, the frame plate connecting ring 14, the auxiliary frame plate 13 and the transmission end bearing seat 61.
Referring to fig. 2 and 3, the gear assembly includes a fixed gear 16 fixedly disposed on the outer wall of the bearing seat 61 at the transmission end in the gear box 12, a planetary gear 17 coaxially and fixedly mounted on the grinding cylinder 10 and located on the outer wall of the inner cylinder of the gear box 12, and a carrier gear 18 rotatably mounted on the grinding disc 9 and meshed with the fixed gear 16 and the planetary gear 17 simultaneously (the planetary gear 17 and the carrier gear 18 in fig. 2 belong to two sets of gear assemblies respectively located at the upper and lower sides of the rotating main shaft 2 in the figure), wherein the carrier gear 18 is located between the circle center connecting lines of the fixed gear 16 and the planetary gear 17. Because the two grinding discs 9 are connected with the rotating main shaft 2, the grinding discs 9 can be driven to synchronously rotate when the driving device drives the rotating main shaft 2 to rotate, and because the fixed gear 16 is fixed on the transmission end bearing seat 61 and still, the gap bridge gear 18 rotates in the same direction under the action of the fixed gear 16 when the gap bridge gear rotates along with the grinding discs 9. Further, when the carrier gear 18 rotates, the planet gears 17 engaged therewith will be driven to rotate, and the rotation direction of the planet gears 17 is opposite to the rotation direction of the rotating main shaft 2, so as to realize planetary rotation of the grinding cylinder 10 on the grinding disc 9.
Referring to fig. 2, in order to lubricate gears of the gear assembly when the gears rotate, an annular oil chamber 19 is formed on the inner wall of the transmission end bearing seat 61 around the rotation main shaft 2, and lubricating oil for lubricating the gear assembly is filled in the oil chamber 19. On the other hand, the rotating main shaft 2 is hollow and also contains lubricating oil. The oil chamber 19 is provided with two separated clean oil chambers 20 and turbid oil chambers 21. Wherein the turbid oil chamber 21 and the rotating main shaft 2 are communicated with each other through a perforation 22 which penetrates through the outer wall of the rotating main shaft, and the turbid oil chamber 21 is simultaneously connected with an oil purifying device 23 which is used for purifying and cooling lubricating oil outside the transmission end bearing seat 61. Meanwhile, the output end of the oil purifying device 23 is communicated with the oil purifying chamber 20, so that the lubricating oil cooled and filtered in the oil purifying chamber 20 can be sent to the oil purifying chamber 20. The oil purifying chamber 20 and the gear assembly are communicated with each other through an oil feed hole 24 formed in the fixed gear 16. The oil feeding hole 24 is formed from the tooth root between two adjacent teeth of the fixed gear 16 to the inner circumferential wall of the fixed gear 16 in the radial direction, a through hole communicated to the oil purifying chamber 20 is formed in the outer wall of the transmission end bearing seat 61 sleeved on the fixed gear 16, and the oil feeding hole 24 is in butt joint with the through hole when penetrating to the outer wall of the transmission end bearing seat 61, so that the oil purifying chamber 20 and the gear assembly are communicated with each other. It is to be noted that the oil feed hole 24 is provided at the lowest position on the circumferential tooth root of the fixed gear 16.
When the lubricating oil in the oil chamber 19 seeps into the oil feeding hole 24 of the fixed gear 16 under the action of gravity and flows to the tooth root of the fixed gear 16, the lubricating oil can be attached to the teeth of the carrier gear 18 in the rotating process of the carrier gear 18, and then the lubricating oil can be attached to the planet gear 17 in the contacting process of the planet gear 18 in the rotating process of the carrier gear 18, so that the internal gears in the gear assembly are integrally lubricated, and the lubricating effect of the gear assembly can be still realized when the grinding cylinder 10 and the rotating main shaft 2 are in high-speed transmission. In the whole process, lubricating oil is input from the innermost fixed gear 16 of the gear assembly, so that the lubricating oil can still enter the surface of the next gear in the process that each gear moves outwards under the action of centrifugal force in the rotating process, and finally three groups of gears are lubricated, so that the whole equipment can still keep a better lubricating state in high-speed operation, and the generation of overhigh heat caused by overlarge friction is avoided.
Referring to fig. 2 and 3, on the other hand, in order to treat the lubricating oil which is finally transferred to the planetary gears 17 and separated from the planetary gears 17 by centrifugal force, four sets of oil pumps 25 for pumping out the lubricating oil in the gear box 12 are fixedly installed on the side of the grinding disc 9 far away from the auxiliary frame plate 13 corresponding to the planetary gears 17 of the four sets of grinding cylinders 10. An oil inlet of the oil pump 25 is communicated with the interior of the gear box 12 far away from the rotating main shaft 2 through a pipeline, a driving shaft in the oil pump 25 rotates to penetrate through the grinding disc 9 to extend into the gear box 12, and an oil pumping gear 26 in transmission connection with the planetary gear 17 is fixedly connected to the end part in the gear box 12. Meanwhile, the output end of the oil pump 25 is connected to the inside of the rotating main shaft 2 through a pipe.
Referring to the oil passage indication line in fig. 2, the lubricating oil is finally caused to flow in a circuit between the gear case 12, the rotating main shaft 2, the dirty oil chamber 21 in the oil chamber 19, the oil cleaning device 23, and the clean oil chamber 20 by the oil pump 25.
The implementation principle and the beneficial effects of the embodiment are as follows: when the grinding cylinders 10 are driven by the gear assembly to perform planetary rotation along with the rotating main shaft 2, and the lubricating oil in the oil cavity 19 seeps into the oil feeding hole 24 of the fixed gear 16 under the action of gravity and flows to the tooth root of the fixed gear 16, the lubricating oil can adhere to the teeth of the carrier gear 18 in the rotation process of the carrier gear 18, and then the lubricating oil adheres to the planetary gear 17 in the contact process of the planetary gear 17 and the carrier gear 18 in the rotation process of the carrier gear 18, so that the internal gears in the gear assembly are integrally lubricated, and the lubricating effect of the gear assembly can still be performed when the grinding cylinders 10 and the rotating main shaft 2 perform high-speed transmission. In the whole process, lubricating oil is input from the innermost fixed gear 16 of the gear assembly, so that the lubricating oil can still enter the surface of the next gear in the process that each gear moves outwards under the action of centrifugal force in the rotating process, and finally three groups of gears are lubricated, so that the whole equipment can still keep a better lubricating state in high-speed operation, the generation of overhigh heat caused by overlarge friction is avoided, the equipment can stably operate for a long time, and the equipment is further suitable for industrialized large-scale and long-time production and processing of the planetary ball mill.
Meanwhile, the planetary gear 17 can synchronously drive a driving shaft of the oil pump 25 to rotate in the rotating process, the oil pump 25 can extract and recover lubricating oil in the gear box 12 far away from the rotating main shaft 2, and the lubricating oil is re-injected into the rotating main shaft 2 against the centrifugal force under the action of the oil pump 25 and then re-enters the turbid oil chamber 21 of the oil chamber 19. Meanwhile, after entering the dirty oil chamber 21, the lubricating oil continues to enter the oil purifying device 23, so that the used lubricating oil is cooled and filtered, and the like, and the lubricating effect of the lubricating oil entering the gear assembly through the oil feeding hole 24 after being input into the clean oil chamber 20 is ensured, so that the gear assembly keeps a good working effect in continuous operation.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (6)

1. The utility model provides a planetary ball mill is used to industry which characterized in that: the grinding device comprises a rack (1) and a rotating main shaft (2) rotatably arranged on the rack (1), wherein two ends of the rotating main shaft (2) are fixedly connected with grinding discs (9), and a grinding cylinder (10) with two open ends is rotatably arranged between the two grinding discs (9);
one end of the rotating main shaft (2) is connected with a driving device, a gear assembly used for driving the grinding cylinder (10) to rotate is connected between the rotating main shaft (2) and the grinding cylinder (10) in a transmission way, the rotating direction of the grinding cylinder (10) is opposite to that of the rotating main shaft (2), an oil cavity (19) filled with lubricating oil is arranged on the rack (1) between the rotating main shaft (2) and the gear assembly, the oil cavity (19) is communicated with the gear assembly,
the gear assembly comprises a fixed gear (16) which is fixedly arranged on the rack (1) and is coaxial with the rotating main shaft (2), a planetary gear (17) which is coaxially and fixedly arranged at the end part of the grinding drum (10) and a carrier gear (18) which is rotatably arranged on the grinding disc (9) and is simultaneously meshed with the fixed gear (16) and the planetary gear (17), an oil feeding hole (24) which penetrates through the inner wall of the fixed gear (16) is radially formed in the tooth root part of the fixed gear (16), the oil feeding hole (24) is communicated with the oil cavity (19), and the oil feeding hole (24) is formed in the lowest position of the circumferential position of the fixed gear (16);
a gear box (12) is arranged outside the gear assembly, the grinding disc (9) is connected with an oil pump (25) used for recovering the lubricating oil at the position of the gear box (12) far away from the rotating main shaft (2), the output end of the oil pump (25) is communicated with the oil cavity (19), the interior of the rotating main shaft (2) is hollow, the output end of the oil pump (25) is communicated with the interior of the rotating main shaft (2), a clean oil chamber (20) and a dirty oil chamber (21) which are mutually separated are arranged in the oil chamber (19), the turbid oil chamber (21) is communicated with the interior of the rotating main shaft (2), the turbid oil chamber (21) is connected with an oil purifying device (23) for purifying lubricating oil on the frame (1), the output end of the oil purifying device (23) is communicated with the oil purifying chamber (20), and the oil purifying chamber (20) is communicated with the oil feeding hole (24).
2. The industrial planetary ball mill according to claim 1, characterized in that: the driving shaft of the oil pump (25) extends into the gear box (12) and is connected with the planetary gear (17) in a transmission engagement mode.
3. The industrial planetary ball mill according to claim 1, characterized in that: the gear assembly is kept away from one side of mill (9) is provided with and is on a parallel with supplementary frame plate (13) of mill (9), supplementary frame plate (13) are close to the interior of frame (1) along with frame (1) is sealed, the outer edge of supplementary frame plate (13) with between mill (9) week edge sealing connection has annular frame plate clamping ring (14), supplementary frame plate (13) with mill (9) and frame plate clamping ring (14) constitute gear box (12), grinding cylinder (10) tip passes supplementary frame plate (13) and with supplementary frame plate (13) rotate and are connected.
4. The industrial planetary ball mill according to claim 1, characterized in that: the grinding cylinders (10) are arranged between the two grinding discs (9) in four groups, the four groups of grinding cylinders (10) are arranged in the circumferential direction of the rotating main shaft (2) at equal angular intervals, and the planetary gear (17), the carrier gear (18) and the oil pump (25) correspond to the four groups of grinding cylinders (10) and are arranged in the gear box (12) where the four groups of grinding cylinders (10) are located.
5. The industrial planetary ball mill according to claim 1, characterized in that: and a pull rod (8) with two ends respectively fixedly connected to the two grinding discs (9) is arranged between the grinding discs (9), and the pull rod (8) is parallel to the axial direction of the rotating main shaft (2).
6. The industrial planetary ball mill according to claim 1, characterized in that: the other end of the rotating main shaft (2) is connected with a feeding device, the feeding device comprises a feeding bent pipe (11) which is rotationally communicated with the opening at the end part of the grinding cylinder (10) and a spiral feeder which is used for conveying materials to the feeding bent pipe (11), a feeding shaft cylinder (7) which is rotationally arranged on the rack (1) is arranged between the feeding bent pipe (11) and the spiral feeder, and the feeding shaft cylinder (7) is rotationally sleeved outside the feeding end of the spiral feeder; the machine frame (1) is provided with a negative pressure aggregate device at one side far away from the spiral feeder.
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