CN112403619A - Mechanical ball milling device for preparing ferrite material and ball milling method thereof - Google Patents
Mechanical ball milling device for preparing ferrite material and ball milling method thereof Download PDFInfo
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- CN112403619A CN112403619A CN202011175138.7A CN202011175138A CN112403619A CN 112403619 A CN112403619 A CN 112403619A CN 202011175138 A CN202011175138 A CN 202011175138A CN 112403619 A CN112403619 A CN 112403619A
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- ball milling
- tank body
- bevel gear
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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
- B02C17/10—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
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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
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/1835—Discharging devices combined with sorting or separating of material
- B02C17/1855—Discharging devices combined with sorting or separating of material with separator defining termination of crushing zone, e.g. screen denying egress of oversize material
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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
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a mechanical ball milling device for preparing ferrite materials and a ball milling method thereof, belonging to the technical field of ferrite material preparation. The method comprises the following steps: the base is arranged in the accommodating cavity; the turntable is positioned on the base; the turntable is in transmission connection with the transmission mechanism, and the driving mechanism is arranged on the turntable; ball milling tanks, at least three groups; the ball milling tanks are in transmission connection with the driving mechanisms respectively, and rotate under the action of the driving mechanisms; at least two spheres with different diameters are placed in the ball milling tank. The invention not only can grind uniformly but also can crush uniformly, thereby greatly increasing the uniformity of mixing and effectively improving the quality of products.
Description
Technical Field
The invention belongs to the technical field of ferrite material preparation, and particularly relates to a mechanical ball milling device for preparing ferrite material and a ball milling method thereof.
Background
Ferrites are widely used because of their good electrical and magnetic properties. The existing solid phase reaction method is one of the methods for preparing magnetic nickel zinc ferrite, namely a preparation method for directly ball-milling and mixing solid materials serving as raw materials, and then performing compression molding and high-temperature sintering to obtain ferrite. However, since the ferrite is made of a powder material with uneven particle size and certain hardness, the grinding fineness of the material can only be controlled by increasing the grinding time, which is inefficient, and it is excessive for some materials, and even if the grinding time is prolonged, the required grinding fineness is difficult to achieve, resulting in increased energy consumption and unstable product quality.
Disclosure of Invention
The invention provides a high-efficiency mechanical ball milling device for preparing ferrite materials and a ball milling method thereof, aiming at solving the technical problems in the background technology.
The invention is realized by adopting the following technical scheme: a mechanical ball milling apparatus for preparing ferrite material, comprising:
the bottom of the base is a hollow structure to form an accommodating cavity;
the transmission mechanism is arranged inside the accommodating cavity;
the turntable is positioned on the base; the turntable is in transmission connection with the transmission mechanism, and the turntable autorotates on the base under the action of the transmission mechanism;
the driving mechanism is arranged on the turntable;
ball milling tanks, at least three groups; the ball milling tanks are in transmission connection with the driving mechanisms respectively, and rotate under the action of the driving mechanisms; at least two spheres with different diameters are placed in the ball milling tank body;
the rotation direction of the rotating disc is opposite to the rotation direction of the ball milling tank.
In a further embodiment, the transmission mechanism comprises: the device comprises a first cylinder, a first bevel gear, a second cylinder, a second bevel gear, a transmission motor, a driving shaft, a third cylinder and a third bevel gear, wherein the first cylinder is rotatably arranged at the bottom in an accommodating cavity, the first bevel gear is fixed at the top of the first cylinder, the second cylinder is rotatably arranged at the top of the accommodating cavity, the second bevel gear is fixed at the bottom of the second cylinder, the transmission motor is fixed at one side in the accommodating cavity, the driving shaft is in transmission connection with an output shaft of the transmission motor, the third cylinder is rotatably arranged at the opposite surface of the transmission motor, and the;
the driving shaft is positioned between the first bevel gear and the second bevel gear, and the third bevel gear is simultaneously meshed with the first bevel gear and the second bevel gear.
In a further embodiment, the accommodating cavity is internally provided with: the fourth column body is fixedly provided with a fourth bevel gear, and the fifth column body is fixedly provided with a fifth bevel gear;
the fourth bevel gear and the fifth bevel gear are positioned on two sides of the driving shaft and are simultaneously meshed with the first bevel gear and the second bevel gear;
the planes of the third column body, the fourth column body and the fifth column body form an equilateral triangle.
In a further embodiment, the drive mechanism comprises: the first gear is arranged at the central position of the rotary table, and the at least three second gears are arranged on the rotary table and are simultaneously meshed with the first gear;
the upper surface of the second gear is provided with a clamping seat, and the clamping seat is used for being connected with a corresponding ball milling tank;
the first gear is in transmission connection with an output shaft of a driving motor, and the driving motor is installed inside the rotary disc.
In a further embodiment, the ball milling jar comprises:
the tank body is provided with a valve mechanism arranged below the tank body along the radial direction of the tank body; the valve mechanism divides the tank body into an upper tank body and a lower tank body; one side of the lower tank body is of an open structure;
the screen is arranged below the valve mechanism along the radial direction of the lower tank body;
the receiving box is placed inside the lower tank body through the open structure; the top of the receiving box is open; the receiving box is positioned below the screen;
when powder after ball milling is required to be screened out, the transmission mechanism stops working, the driving mechanism runs at a low speed, the valve mechanism is opened, the powder directly falls into the bearing box in the lower tank body from the upper tank body, the ball body shakes or collides on the screen mesh under the low-speed transmission of the driving mechanism, and the powder adhered to the ball body directly falls under the action of external force.
In a further embodiment, the screen is a stainless steel metal mesh, and the inner surface of the upper tank body is provided with a stepped lining plate or a corrugated lining plate.
In a further embodiment, the valve mechanism comprises:
the discharging box comprises an inner sealing ring, an outer sealing ring, an upper sealing ring and a lower sealing ring which are respectively connected between the inner sealing ring and the outer sealing ring, and the inner sealing ring and the inner side surface of the upper tank body or the lower tank body are positioned on the same vertical surface;
further comprising: the gear mechanism comprises an outer sealing ring, an inner gear ring fixed on the inner surface of the outer sealing ring, a rotating ring movably clamped on the outer sealing ring and positioned above the inner gear ring, a connecting ring fixed in the rotating ring and concentric with the rotating ring, a plurality of special-shaped racks with one ends hinged on the connecting ring and the other ends meshed with the inner gear ring, and a crank fixed on the connecting ring;
a gap is formed in the outer sealing ring, the movable end of the crank penetrates through the gap and is in transmission connection with a piston rod of an air cylinder, and the air cylinder is fixed on the outer surface of the outer sealing ring;
under the action of the air cylinder, the opening and closing of the valve mechanism are realized by controlling the mutual position relation of the special-shaped racks.
In a further embodiment, the shaped rack comprises: the meshing part extends towards the inner gear ring in a wavy manner along the hinged position between the special-shaped rack and the connecting ring, and a plurality of sawteeth are arranged on the outer side surface of the meshing part; the splicing parts extend along the opposite direction of the meshing parts, the inner side surfaces of the outer side surfaces of the meshing parts are arc surfaces, when the splicing parts of the special-shaped racks are gathered together, the outer side surface of any one of the meshing parts is in contact with the inner side surface of the meshing part on the adjacent special-shaped rack, and the inner side surface of the meshing part on the other adjacent special-shaped rack is in contact with the outer side surface of the meshing part on the other adjacent special-shaped rack.
In a further embodiment, a locking mechanism is arranged between the receiving box and the lower tank body;
wherein, locking mechanism includes: the inner wall part of the box body is fixedly connected with the receiving box, and the inner wall exposed outside the receiving box is provided with a butt joint hole; the lower tank body is provided with a clamping column corresponding to the butt joint hole;
a first mounting shaft is fixed inside the box body, a latch is sleeved on the first mounting shaft, the latch is connected with the first mounting shaft through a first torsion spring, a second mounting shaft is arranged on one side of the first mounting shaft, a locking member is sleeved on the mounting shaft, and the locking member is connected with the second mounting shaft through a second torsion spring; the locking piece is provided with a pulling piece, and the movable end of the pulling piece is positioned outside the box body and used for pulling;
when the locking is carried out, the clamping column is inserted into the butt joint hole, the pulling piece is free from any external force, the locking piece and the clamping tooth in the box body are meshed with each other at the moment, and the clamping hook on the clamping tooth is controlled to hook the clamping column; when the bearing box needs to be taken out, the pulling piece is pulled outwards, the locking piece is forced to be separated from the latch, the latch is reversed under the action of the first torsion spring, and the hook is separated from the clamping column to unlock the bearing box.
The ball milling method using the mechanical ball milling device for preparing the ferrite material specifically comprises the following steps of:
step one, before raw materials are processed, a valve mechanism in the ball milling tank is in a closed state, and a bearing box is positioned in the lower tank body and locked by a locking mechanism;
secondly, feeding the raw materials to be ball-milled into the tank body from a feed inlet of each ball-milling tank body;
step three, simultaneously or sequentially starting a transmission motor in a transmission mechanism and a driving motor in a driving mechanism, wherein the rotation direction of the turntable is opposite to the rotation direction of the ball milling tank; the sphere in the tank body is caught to a certain height under the action of centrifugal force, and then falls down in a parabola shape along the inner wall of the tank body under the action of gravity to impact and grind the raw materials;
step four, after ball milling is finished, closing a middle transmission motor of the transmission mechanism, reducing the rotating speed of a driving motor in the driving mechanism, opening a valve mechanism to enable a lower tank body to be communicated with an upper tank body, transferring powder of the upper tank body to the lower tank body under the action of gravity and a ball body, finally falling into a bearing box through a screen, and enabling the powder adhered to the ball body to directly fall into the bearing box when the ball body collides with each other;
and step five, after the powder in the upper tank body is transferred, opening the locking mechanism, and taking out the receiving box.
The invention has the beneficial effects that: according to the invention, through the reverse rotation of the turntable and the tank body, the impact force of the ball body on the material is increased; the ball milling machine has the advantages that the ball milling machine can be used for carrying out ball milling on spheres with different diameters in a targeted mode and is responsible for particles with different particle diameters, gaps between the particles are unequal due to the fact that the particle sizes are unequal, the spheres with different diameters can shuttle into the gaps matched with the spheres, the ball milling area is increased, the spheres can be ground uniformly and can be crushed uniformly, the mixing uniformity is greatly improved, and the product quality is effectively improved. Through set up locking mechanism between accepting the box and the lower jar of body, can effectually avoid the lower jar of body to accept the box when the rotation and thrown away.
Drawings
Fig. 1 is a schematic structural diagram of a mechanical ball milling device for preparing ferrite material according to the present invention.
Fig. 2 is a schematic structural diagram of the transmission mechanism in the present invention.
Fig. 3 is a schematic structural view of the driving mechanism in the present invention.
Fig. 4 is a side view of a ball milling jar in the present invention.
Fig. 5 is a schematic structural view of the valve mechanism of the present invention.
FIG. 6 is a schematic view of the upper tank and valve mechanism of the present invention.
Fig. 7 is a schematic structural view of the locking mechanism of the present invention.
Each of fig. 1 to 7 is labeled as: the ball milling device comprises a base 1, a rotating disc 2, a ball milling tank 3, a first cylinder 4, a first bevel gear 5, a second cylinder 6, a second bevel gear 7, a driving shaft 8, a third cylinder 9, a third bevel gear 10, a fourth cylinder 11, a fifth cylinder 12, a fourth bevel gear 13, a fifth bevel gear 14, a first gear 15, a second gear 16, a clamping seat 17, an upper tank 301, a lower tank 302, a valve mechanism 303, a screen 304, a receiving box 305, a locking mechanism 306, an outer sealing ring 401, a lower sealing ring 402, a rotating ring 403, a connecting ring 404, a special-shaped rack 405, a crank 406, a notch 407, a meshing part 408, a splicing part 409, a sawtooth 410, a box body 501, a butt joint hole 502, a clamping column 503, a first mounting shaft 504, a clamping tooth 505, a first torsion spring 506, a second mounting shaft 507, a locking member 508, a second torsion spring 509 and a pulling member 510.
Detailed Description
The invention is further described with reference to specific embodiments and the accompanying description.
First, the inventors have found some disadvantages with respect to the ball milling pot used in the ferrite preparation: because the powder raw materials used by the ferrite are uneven in particle size and have certain hardness, the grinding fineness of the materials can be controlled only by increasing the grinding time, the efficiency is low, and in addition, the grinding time is too much for certain materials, the required grinding fineness is difficult to achieve even if the grinding time is prolonged, the energy consumption is increased, the product quality is unstable, and the like.
Therefore, the inventor designs a high-efficiency mechanical ball milling device for preparing ferrite materials, which comprises: the ball milling device comprises a base 1, a rotating disc 2, a ball milling tank 3, a first cylinder 4, a first bevel gear 5, a second cylinder 6, a second bevel gear 7, a driving shaft 8, a third cylinder 9, a third bevel gear 10, a fourth cylinder 11, a fifth cylinder 12, a fourth bevel gear 13, a fifth bevel gear 14, a first gear 15, a second gear 16, a clamping seat 17, an upper tank 301, a lower tank 302, a valve mechanism 303, a screen 304, a receiving box 305, a locking mechanism 306, an outer sealing ring 401, a lower sealing ring 402, a rotating ring 403, a connecting ring 404, a special-shaped rack 405, a crank 406, a notch 407, a meshing part 408, a splicing part 409, a sawtooth 410, a box body 501, a butt joint hole 502, a clamping column 503, a first mounting shaft 504, a clamping tooth 505, a first torsion spring 506, a second mounting shaft 507, a locking member 508, a second torsion spring 509 and a pulling member 510.
As shown in fig. 1, the mechanical ball milling device for preparing ferrite material comprises a base 1, wherein the bottom of the base 1 is a hollow structure to form a containing cavity, a transmission mechanism is arranged in the containing cavity, a turntable 2 is connected to the transmission mechanism in a transmission manner, and the turntable 2 is located above the base 1. The turntable 2 rotates on the base 1 under the transmission of the transmission mechanism. The upper surface of the turntable 2 is provided with a driving mechanism, the driving mechanism is in transmission connection with at least three groups of ball milling tanks 3, and in the embodiment, the number of the ball milling tanks 3 is four. Under the action of the driving mechanism, the ball milling tank 3 rotates. The internal portion of jar of ball-milling jar 3 has placed the spheroid of two at least different diameters, in this embodiment, the spheroid includes: a first sphere, a second sphere, and a third sphere; the diameters of the first sphere, the second sphere and the third sphere are respectively 15mm, 10mm and 5mm, and the mass ratio of the first sphere to the second sphere to the third sphere is 1:3: 2. Set up the spheroid of different specifications, can have corresponding the granule of being responsible for different particle diameters, because the particle size is unequal, consequently the clearance between granule and the granule is inequality, and the spheroid of three kinds of different diameters can shuttle back and forth in the clearance that matches with it, increases the ball-milling area, not only can grind evenly and can also smash evenly, great increase the homogeneity of mixing, effectively improve the quality of product. In order to increase the impact force of the ball on the material, the rotation direction of the rotating disc 2 is opposite to the rotation direction of the ball milling tank 3.
In this embodiment, the transmission mechanism includes: a first cylinder 4, a second cylinder 6, a third cylinder 9 and a drive shaft 8. The first cylinder 4 is rotatably installed on the bottom surface of the accommodating cavity, and a first bevel gear 5 is fixedly installed at the top end of the first cylinder 4. The second cylinder 6 is rotatably arranged on the top surface in the accommodating cavity, and a second bevel gear 7 is fixedly arranged at the bottom end of the second cylinder 6. The inside of holding the chamber still installs drive motor, driving shaft 8 is gone up the transmission connection of drive motor's output shaft, the opposite face department of drive motor is provided with third cylinder 9, third cylinder 9 with drive shaft 8 is fixed connection, be fixed with third bevel gear 10 on the third cylinder 9. Meanwhile, the driving shaft 8 is positioned between the first bevel gear 5 and the second bevel gear 7, the third bevel gear 10 is simultaneously meshed with the first bevel gear 5 and the second bevel gear 7, and the top end of the second cylinder 6 is exposed out of the base 1 and is fixedly connected with the rotating disc 2.
The working process of the transmission mechanism is as follows: when the transmission motor works, the driving shaft 8 on the output shaft rotates, the third cylinder 9 fixedly connected with the driving shaft 8 rotates, the third bevel gear 10 on the third cylinder 9 is meshed with the first bevel gear 5 and the second bevel gear 7 simultaneously, the second cylinder 6 rotates, and the rotating disc 2 rotates.
In the invention, the turntable 2 is used for bearing materials and the tank body, and the steel balls are arranged in the tank body, and the mass of the steel balls is larger, so that the pressure on the turntable 2 is very large, and the turntable 2 can be inclined if a transmission mechanism is not well supported. Therefore, the inventor makes the following improvements to the transmission mechanism: as shown in fig. 2, the accommodating chamber is further installed with: a fourth column 11 and a fifth column 12, wherein a fourth bevel gear 13 is fixed on the fourth column 11, and a fifth bevel gear 14 is fixed on the fifth column 12; the fourth bevel gear 13 and the fifth bevel gear 14 are positioned on two sides of the driving shaft 8, and the fourth bevel gear 13 and the fifth bevel gear 14 are simultaneously meshed with the first bevel gear 5 and the second bevel gear 7; the planes of the third column 9, the fourth column 11 and the fifth column 12 form an equilateral triangle. The fourth column body 11 and the fifth column body 12 play a role in transmission, and simultaneously play a role in supporting the second column body 6 in all aspects, so that the second column body 6 is placed to be inclined under the action of the turntable 2, and the stability and the safety are improved.
In order to be able to drive the cans individually, the drive mechanism, as shown in fig. 3, comprises: a first gear 15 and four second gears 16. The first gear 15 is installed at the central position of the turntable 2, the second gears 16 are distributed at the periphery of the first gear 15 at equal intervals, the second gears 16 are respectively meshed with the first gears 15, the upper surface of each second gear 16 is provided with a clamping seat 17, and the clamping seats 17 are used for being fixedly connected or clamped with the corresponding ball milling pots 3. When the fixing connection is adopted, the fixing can be realized by welding or bolts, and when the clamping connection is adopted, the interference fit can be realized. The first gear 15 is in transmission connection with an output shaft of a driving motor, and the driving motor is installed inside the rotary table 2. That is, the driving motor works to drive the first gear 15 and the second gear 16 to mesh with each other, and the second gear 16 rotates. And ensures that the rotation direction of the turntable 2 is opposite to the rotation direction of the ball milling tank 3. So as to increase the multi-dimensional movement of the ball body and increase the impact force on the material.
In the existing tank body, materials are generally fed from the top of the tank body and poured out after ball milling, but a ball and the materials are impacted with the materials under the condition of high rotating speed, and the surface of the ball is bound with a lot of materials, so that the loss of the materials can be caused if the surface of the ball is not cleaned. Meanwhile, the purity of the material is reduced in the cleaning process, and the loss of the material and the reduction of the product quality are also caused.
Therefore, the inventor makes the following improvements in order to reduce the loss degree of the material: as shown in fig. 4, the ball mill pot 3 includes: the tank body is provided with a valve mechanism 303 arranged below the tank body along the radial direction of the tank body; the valve mechanism 303 divides the tank into an upper tank 301 and a lower tank 302; one side of the lower tank body 302 is of an open structure; a screen 304 installed below the valve mechanism 303 along the radial direction of the lower tank 302, wherein the screen 304 is used for screening the material in particle size and isolating the balls to prevent the balls from entering the interior of the receiving box 305 along with the material; a receiving box 305 placed inside the lower tank 302 through the open structure; the top of the receiving box 305 is open; the receiving box 305 is located below the screen 304, and the receiving box 305 is used for receiving the ball-milled materials.
When powder after ball milling needs to be screened out, the transmission mechanism stops working, the driving mechanism runs at a low speed, the valve mechanism 303 is opened, the powder directly falls into the bearing box 305 in the lower tank body 302 from the upper tank body 301, the spheres vibrate or collide with each other on the screen 304 under the low-speed transmission of the driving mechanism, and the powder adhered to the spheres directly falls out under the action of external force.
Because the material and balls are directly fluctuated on the screen 304 after the valve mechanism 303 is opened, the screen 304 is a stainless steel metal mesh in order to ensure that the screen 304 can withstand the vibration of the balls. Meanwhile, a stepped lining plate or a corrugated lining plate is arranged on the inner surface of the upper tank body 301, so that the rolling path of the ball is increased.
As shown in fig. 5, the valve mechanism 303 includes: the discharging box comprises an inner sealing ring, an outer sealing ring 401, an upper sealing ring and a lower sealing ring 402 which are respectively connected between the inner sealing ring and the outer sealing ring 401. In order to enable all the materials in the upper tank 301 to directly fall into the lower tank 302, the inner sealing ring and the inner side surface of the upper tank 301 or the lower tank 302 are positioned on the same vertical surface.
The valve mechanism 303 further includes: the gear ring comprises an inner gear ring fixed on the inner surface of the outer sealing ring 401, a rotating ring 403 movably clamped on the outer sealing ring 401 and positioned above the inner gear ring, a connecting ring 404 fixed in the rotating ring 403 and concentric with the rotating ring 403, a plurality of special-shaped racks 405 with one ends hinged on the connecting ring 404 and the other ends meshed with the inner gear ring, and a crank 406 fixed on the connecting ring 404; a notch 407 is formed in the outer sealing ring 401, the movable end of the crank 406 penetrates through the notch 407 and is in transmission connection with a piston rod of an air cylinder, and the air cylinder is fixed on the outer surface of the outer sealing ring 401; under the action of the air cylinder, the valve mechanism 303 is opened and closed by controlling the mutual position relation of the special-shaped racks 405.
More specifically, the shaped rack 405 includes: the gear rack comprises an engaging part 408 and a splicing part 409, wherein the engaging part 408 extends towards an inner gear ring in a wavy manner along a hinged part between a special-shaped rack 405 and a connecting ring 404, and a plurality of sawteeth 410 are arranged on the outer side surface of the engaging part 408; the splicing part 409 extends along the opposite direction of the meshing part 408, the inner side surfaces of the outer side surfaces of the meshing parts 408 are all arc surfaces, when the splicing parts 409 of the special-shaped racks 405 are gathered together, the outer side surface of any one of the meshing parts 408 is in contact with the inner side surface of the meshing part 408 on the adjacent special-shaped rack 405, and the inner side surface is in contact with the outer side surface of the meshing part 408 on the other adjacent special-shaped rack 405. In order to guarantee the sealing performance of the valve mechanism 303 for closing, a raised line is arranged on the inner side surface, a groove body is arranged on the outer side surface, and the raised line is located inside the groove body.
During ball milling, the air cylinder is in a compression state, the saw teeth 410 at the tail end of the meshing part 408 of the special-shaped rack 405 are meshed with the inner gear ring, the splicing parts 409 of the special-shaped rack 405 are gathered, namely the outer side face of any one meshing part 408 is contacted with the inner side face of the meshing part 408 on the adjacent special-shaped rack 405, the inner side face is contacted with the outer side face of the meshing part 408 on the other adjacent special-shaped rack 405, and the valve mechanism 303 is in a closing state at the moment. When the cylinder is in an extension state, the meshing part 408 of the special-shaped rack 405 is meshed with the inner gear ring to the maximum extent, the splicing parts 409 are separated from each other, and the valve mechanism 303 is in an open state.
In use, it is generally customary to place the cartridge 305 inside the lower housing 302 for the first time. If the ball mill is run for a certain time, the operator will probably open the valve mechanism 303 directly and forget to check whether there is a receiving box 305 inside the lower tank 302, which will directly cause a great loss of material. If the receiving box 305 is placed in the lower pot 302 before ball milling, the receiving box 305 needs to follow the rotation of the lower pot 302, and if there is no restriction of external force, the receiving box 305 can be thrown out under the condition of high-speed rotation. Accordingly, the inventors have provided a latching mechanism 306 between the receiving cassette 305 and the lower canister 302.
As shown in fig. 7, the locking mechanism 306 includes: the inner wall of the box body 501 is fixedly connected with the receiving box 305, and the inner wall exposed outside the receiving box 305 is provided with a butt joint hole 502; the lower tank 302 is provided with a clamping column 503 corresponding to the position of the butt joint hole 502; a first mounting shaft 504 is fixed inside the box body 501, a latch 505 is sleeved on the first mounting shaft 504, the latch 505 is connected with the first mounting shaft 504 through a first torsion spring 506, a second mounting shaft 507 is arranged on one side of the first mounting shaft 504, a locking member 508 is sleeved on the mounting shaft, and the locking member 508 is connected with the second mounting shaft 507 through a second torsion spring 509; the locking member 508 is provided with a pulling member 510, and the movable end of the pulling member 510 is located outside the box body 501 for pulling. As shown in fig. 7, the latch 505 includes a ratchet and a hook disposed on the ratchet for hooking the latch 503 in the docking hole 502. See in particular fig. 7.
When the locking is performed, the latch 503 is inserted into the abutting hole 502 (i.e. the receiving box 305 is located in the lower tank 302 and controls the latch 503 to align with the abutting hole 502), the pulling member 510 is free from any external force, and at this time, the locking member 508 inside the box 501 is engaged with the latch 505 and controls the hook on the latch 505 to hook the latch 503; when the receiving box 305 needs to be taken out, the pulling member 510 is pulled outwards, the locking member 508 is forced to be separated from the latch 505, the latch 505 is reversed under the action of the first torsion spring 506, and the hook is separated from the clamping column 503 to be unlocked. Effectively preventing the receiving box 305 from being thrown away.
The ball milling method of the mechanical ball milling device for preparing the ferrite material specifically comprises the following steps:
step one, before raw materials are processed, a valve mechanism in the ball milling tank is in a closed state, and a bearing box is positioned in the lower tank body and locked by a locking mechanism;
secondly, feeding the raw materials to be ball-milled into the tank body from a feed inlet of each ball-milling tank body;
step three, simultaneously or sequentially starting a transmission motor in a transmission mechanism and a driving motor in a driving mechanism, wherein the rotation direction of the turntable is opposite to the rotation direction of the ball milling tank; the sphere in the tank body is caught to a certain height under the action of centrifugal force, and then falls down in a parabola shape along the inner wall of the tank body under the action of gravity to impact and grind the raw materials;
step four, after ball milling is finished, closing a middle transmission motor of the transmission mechanism, reducing the rotating speed of a driving motor in the driving mechanism, opening a valve mechanism to enable a lower tank body to be communicated with an upper tank body, transferring powder of the upper tank body to the lower tank body under the action of gravity and a ball body, finally falling into a bearing box through a screen, and enabling the powder adhered to the ball body to directly fall into the bearing box when the ball body collides with each other;
and step five, after the powder in the upper tank body is transferred, opening the locking mechanism, and taking out the receiving box.
Claims (10)
1. A mechanical ball milling device for preparing ferrite materials is characterized by comprising:
the bottom of the base is a hollow structure to form an accommodating cavity;
the transmission mechanism is arranged inside the accommodating cavity;
the turntable is positioned on the base; the turntable is in transmission connection with the transmission mechanism, and the turntable autorotates on the base under the action of the transmission mechanism;
the driving mechanism is arranged on the turntable;
ball milling tanks, at least three groups; the ball milling tanks are in transmission connection with the driving mechanisms respectively, and rotate under the action of the driving mechanisms; at least two spheres with different diameters are placed in the ball milling tank body;
the rotation direction of the rotating disc is opposite to the rotation direction of the ball milling tank.
2. The mechanical ball milling device for preparing ferrite material as claimed in claim 1, wherein the driving mechanism comprises: the device comprises a first cylinder, a first bevel gear, a second cylinder, a second bevel gear, a transmission motor, a driving shaft, a third cylinder and a third bevel gear, wherein the first cylinder is rotatably arranged at the bottom in an accommodating cavity, the first bevel gear is fixed at the top of the first cylinder, the second cylinder is rotatably arranged at the top of the accommodating cavity, the second bevel gear is fixed at the bottom of the second cylinder, the transmission motor is fixed at one side in the accommodating cavity, the driving shaft is in transmission connection with an output shaft of the transmission motor, the third cylinder is rotatably arranged at the opposite surface of the transmission motor, and the; the driving shaft is fixedly connected with the third cylinder;
the driving shaft is positioned between the first bevel gear and the second bevel gear, and the third bevel gear is simultaneously meshed with the first bevel gear and the second bevel gear.
3. The mechanical ball milling device for preparing ferrite material as claimed in claim 2, wherein said containing chamber is further internally provided with: the fourth column body is fixedly provided with a fourth bevel gear, and the fifth column body is fixedly provided with a fifth bevel gear;
the fourth bevel gear and the fifth bevel gear are positioned on two sides of the driving shaft and are simultaneously meshed with the first bevel gear and the second bevel gear;
the planes of the third column body, the fourth column body and the fifth column body form an equilateral triangle.
4. The mechanical ball milling apparatus for preparing ferrite material as set forth in claim 1, wherein said driving mechanism comprises: the first gear is arranged at the central position of the rotary table, and the at least three second gears are arranged on the rotary table and are simultaneously meshed with the first gear;
the upper surface of the second gear is provided with a clamping seat, and the clamping seat is used for being connected with a corresponding ball milling tank;
the first gear is in transmission connection with an output shaft of a driving motor, and the driving motor is installed inside the rotary disc.
5. The mechanical ball milling device for preparing ferrite material according to claim 1, wherein the ball milling pot comprises:
the tank body is provided with a valve mechanism arranged below the tank body along the radial direction of the tank body; the valve mechanism divides the tank body into an upper tank body and a lower tank body; one side of the lower tank body is of an open structure;
the screen is arranged below the valve mechanism along the radial direction of the lower tank body;
the receiving box is placed inside the lower tank body through the open structure; the top of the receiving box is open; the receiving box is positioned below the screen;
when powder after ball milling is required to be screened out, the transmission mechanism stops working, the driving mechanism runs at a low speed, the valve mechanism is opened, the powder directly falls into the bearing box in the lower tank body from the upper tank body, the ball body shakes or collides on the screen mesh under the low-speed transmission of the driving mechanism, and the powder adhered to the ball body directly falls under the action of external force.
6. The mechanical ball milling device for preparing ferrite material as claimed in claim 5, wherein the screen is a stainless steel metal mesh, and the inner surface of the upper tank is provided with a stepped liner plate or a corrugated liner plate.
7. The mechanical ball milling apparatus for preparing ferrite material as set forth in claim 5, wherein the valve mechanism comprises:
the discharging box comprises an inner sealing ring, an outer sealing ring, an upper sealing ring and a lower sealing ring which are respectively connected between the inner sealing ring and the outer sealing ring, and the inner sealing ring and the inner side surface of the upper tank body or the lower tank body are positioned on the same vertical surface;
further comprising: the gear mechanism comprises an outer sealing ring, an inner gear ring fixed on the inner surface of the outer sealing ring, a rotating ring movably clamped on the outer sealing ring and positioned above the inner gear ring, a connecting ring fixed in the rotating ring and concentric with the rotating ring, a plurality of special-shaped racks with one ends hinged on the connecting ring and the other ends meshed with the inner gear ring, and a crank fixed on the connecting ring;
a gap is formed in the outer sealing ring, the movable end of the crank penetrates through the gap and is in transmission connection with a piston rod of an air cylinder, and the air cylinder is fixed on the outer surface of the outer sealing ring;
under the action of the air cylinder, the opening and closing of the valve mechanism are realized by controlling the mutual position relation of the special-shaped racks.
8. The mechanical ball milling device for preparing ferrite material according to claim 7, wherein the shaped rack comprises: the meshing part extends towards the inner gear ring in a wavy manner along the hinged position between the special-shaped rack and the connecting ring, and a plurality of sawteeth are arranged on the outer side surface of the meshing part; the splicing parts extend along the opposite direction of the meshing parts, the inner side surfaces of the outer side surfaces of the meshing parts are arc surfaces, when the splicing parts of the special-shaped racks are gathered together, the outer side surface of any one of the meshing parts is in contact with the inner side surface of the meshing part on the adjacent special-shaped rack, and the inner side surface of the meshing part on the other adjacent special-shaped rack is in contact with the outer side surface of the meshing part on the other adjacent special-shaped rack.
9. The mechanical ball milling device for preparing ferrite material according to claim 5, wherein a locking mechanism is arranged between the receiving box and the lower tank body;
wherein, locking mechanism includes: the inner wall part of the box body is fixedly connected with the receiving box, and the inner wall exposed outside the receiving box is provided with a butt joint hole; the lower tank body is provided with a clamping column corresponding to the butt joint hole;
a first mounting shaft is fixed inside the box body, a latch is sleeved on the first mounting shaft, the latch is connected with the first mounting shaft through a first torsion spring, a second mounting shaft is arranged on one side of the first mounting shaft, a locking member is sleeved on the mounting shaft, and the locking member is connected with the second mounting shaft through a second torsion spring; the locking piece is provided with a pulling piece, and the movable end of the pulling piece is positioned outside the box body and used for pulling;
when the locking is carried out, the clamping column is inserted into the butt joint hole, the pulling piece is free from any external force, the locking piece and the clamping tooth in the box body are meshed with each other at the moment, and the clamping hook on the clamping tooth is controlled to hook the clamping column; when the bearing box needs to be taken out, the pulling piece is pulled outwards, the locking piece is forced to be separated from the latch, the latch is reversed under the action of the first torsion spring, and the hook is separated from the clamping column to unlock the bearing box.
10. The ball milling method using the mechanical ball milling apparatus for preparing ferrite material as claimed in any one of claims 1 to 9, comprising the steps of:
step one, before raw materials are processed, a valve mechanism in the ball milling tank is in a closed state, and a bearing box is positioned in the lower tank body and locked by a locking mechanism;
secondly, feeding the raw materials to be ball-milled into the tank body from a feed inlet of each ball-milling tank body;
step three, simultaneously or sequentially starting a transmission motor in a transmission mechanism and a driving motor in a driving mechanism, wherein the rotation direction of the turntable is opposite to the rotation direction of the ball milling tank; the sphere in the tank body is caught to a certain height under the action of centrifugal force, and then falls down in a parabola shape along the inner wall of the tank body under the action of gravity to impact and grind the raw materials;
step four, after ball milling is finished, closing a middle transmission motor of the transmission mechanism, reducing the rotating speed of a driving motor in the driving mechanism, opening a valve mechanism to enable a lower tank body to be communicated with an upper tank body, transferring powder of the upper tank body to the lower tank body under the action of gravity and a ball body, finally falling into a bearing box through a screen, and enabling the powder adhered to the ball body to directly fall into the bearing box when the ball body collides with each other;
and step five, after the powder in the upper tank body is transferred, opening the locking mechanism, and taking out the receiving box.
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| CN202011175138.7A CN112403619B (en) | 2020-10-28 | 2020-10-28 | Mechanical ball milling device for preparing ferrite material and ball milling method thereof |
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| CN202011175138.7A CN112403619B (en) | 2020-10-28 | 2020-10-28 | Mechanical ball milling device for preparing ferrite material and ball milling method thereof |
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| CN112403619B CN112403619B (en) | 2022-01-07 |
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| CN112403619B (en) | 2022-01-07 |
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Effective date of registration: 20230613 Address after: 243000 No.1, Cishan Road, Yushan Economic Development Zone, Yushan District, Ma'anshan, Anhui Province Patentee after: MAANSHAN NEW CONDA MAGNETIC INDUSTRIAL CO.,LTD. Address before: 211135 No.8, Tianhe Road, industrial concentration area, Qilin street, Jiangning District, Nanjing City, Jiangsu Province Patentee before: NANJING NEW CONDA MAGNETIC INDUSTRIAL Co.,Ltd. |
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Address after: 243000 No.1, Cishan Road, Yushan Economic Development Zone, Yushan District, Ma'anshan, Anhui Province Patentee after: Ma'anshan Xinkangda Magnetic Industry Co.,Ltd. Address before: 243000 No.1, Cishan Road, Yushan Economic Development Zone, Yushan District, Ma'anshan, Anhui Province Patentee before: MAANSHAN NEW CONDA MAGNETIC INDUSTRIAL CO.,LTD. |