A cyclic ball milling device and a ball milling processing method

Abstract

The present invention discloses a cyclic ball milling device and a ball milling processing method. The cyclic ball milling device specifically includes a bin assembly, a grinding assembly, and a discharging assembly; the bin assembly includes an annular flow channel capable of rotating self - axially around a first direction; the grinding assembly includes a grinding groove capable of rotating self - axially around the first direction; the discharging assembly includes a discharging channel and a guiding channel which are connected and communicated, and the inlet part of the guiding channel can extend into the annular flow channel. When grinding materials, the materials are fed into the annular flow channel of the bin assembly; after grinding is completed, through the guiding channel extending into the annular flow channel, the rotating annular flow channel feeds the materials into the discharging channel to complete discharging, realizing the automatic feeding and grinding process of the materials. In summary, the cyclic ball milling device and the ball milling processing method provided by the present invention have the advantage of convenient loading and unloading.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding equipment structures, and in particular to a circulating ball mill equipment and a ball milling processing method. Background Art

[0002] A ball mill is a processing equipment widely used in fields such as mineral processing, materials science, chemical industry, and building materials forming. It can repeatedly apply pressure and friction to materials to achieve refinement of the materials. Conventional ball mills mainly have a horizontal drum structure, which includes a drum that can rotate self - sufficiently. The drum is filled with grinding balls. At the same time, a feed pipe is installed at one end of the drum and is arranged upward, and a discharge pipe is installed at the other end of the drum and is arranged downward. When performing ball milling, materials are input into the drum through the feed pipe, and the rotation of the drum drives the materials and the grinding balls to continuously rub against each other. After completing the ball milling process of the materials, the materials are discharged through the discharge pipe.

[0003] It can be understood that although the above - mentioned conventional ball mill can realize automatic feeding and discharging of materials, in addition to the energy used for the contact between the grinding balls and the materials, it needs to drive the extremely heavy drum to rotate, resulting in low energy utilization rate. In this regard, those skilled in the art have proposed many improvement directions for ball mills. Although the energy utilization rate can be improved, it is difficult to achieve automatic circulation of materials, and there are disadvantages such as difficult feeding and discharging.

[0004] Therefore, developing a new ball mill to improve the energy utilization rate on the premise of realizing automatic circulation of materials is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0005] The purpose of the present invention is to provide a circulating ball mill equipment and a ball milling processing method to solve the technical problem that the existing ball mill equipment in the prior art is difficult to be compatible with high energy utilization rate and convenient feeding and discharging.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A circulating ball mill equipment, comprising:

[0008] A bin assembly, the bin assembly includes an annular flow channel that can rotate self - sufficiently around a first direction, and an inner ring hole is formed inside the annular flow channel;

[0009] A grinding assembly, the grinding assembly includes a grinding groove that can rotate self - sufficiently around the first direction, and the grinding groove is communicated with the annular flow channel to enable materials to circulate between the annular flow channel and the grinding groove;

[0010] A discharging assembly, the discharging assembly includes a connected discharging channel and a guiding channel, and the inlet part of the guiding channel can extend into the annular flow channel;

[0011] The first direction is not parallel to the ground.

[0012] Optionally, it further includes a flow splitter assembly; the flow splitter assembly includes a first flow splitter portion disposed above the annular flow channel and a second flow splitter portion disposed above the bottom wall of the grinding groove;

[0013] The first flow splitter and the second flow splitter form an inlet guide surface on one side facing the rotation direction of the annular flow channel, and the first flow splitter and the second flow splitter form an outlet guide surface on one side facing away from the rotation direction of the annular flow channel;

[0014] Wherein, a first material guide groove is provided at a position of the grinding groove corresponding to the second flow diversion portion, and a second material guide groove is provided at a position of the annular flow channel corresponding to the first flow diversion portion.

[0015] Optionally, the notch of the grinding groove facing the entry guide surface is a grinding inlet, and the notch of the grinding groove facing the outflow guide surface is a grinding outlet;

[0016] The rotation direction of the annular flow channel is opposite to the rotation direction of the grinding groove.

[0017] Optionally, the grinding assembly includes an upper grinding disc and a lower grinding disc sequentially arranged along the first direction, and the grinding groove is formed between the upper grinding disc and the lower grinding disc; wherein the lower grinding disc can rotate relative to the upper grinding disc.

[0018] Optionally, a guide member is installed on the bottom wall of the second material guide trough on one side of the entry guide surface, and an inclined end surface is formed on the side of the guide member facing the outer ring wall of the annular flow channel.

[0019] Optionally, an inner annular hole is formed on the inner side of the annular flow channel; the projection of the grinding groove in the first direction falls into the inner annular hole; the projection of the discharge channel and the guide channel in the first direction falls into the inner annular hole.

[0020] Optionally, the unloading assembly also includes a cylinder unit installed in the inner ring hole, a material baffle plate is installed at the telescopic end of the cylinder unit, and a unloading guide groove is opened in the annular flow channel corresponding to the position of the material baffle plate; the guide channel is opened on the material baffle plate.

[0021] Optionally, an inlet groove is provided on one side of the baffle plate facing the rotation direction of the annular flow channel to form the inlet portion.

[0022] Optionally, the first direction is parallel to the direction of gravity.

[0023] A ball milling method, using the circulating ball milling device as described above, comprises:

[0024] Place the material into the bin assembly;

[0025] Make the annular flow channel and the grinding groove rotate self - rotatably;

[0026] After the grinding is completed, make the inlet part of the guiding channel extend into the annular flow channel.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] For the circulating ball - milling equipment and the ball - milling processing method provided by the present invention, when grinding the material, the material is fed into the annular flow channel of the bin assembly, and then the annular flow channel rotates continuously, driving the material to rotate around the grinding assembly. When the material moves to the inlet of the grinding groove, it enters the grinding groove and rotates synchronously with the grinding groove to achieve grinding. When the material rotates one circle with the grinding groove, it re - enters the annular flow channel; during the continuous rotation of the annular flow channel and the grinding groove, the grinding of the material can be completed. Among them, the grinding groove rotates around a first direction that is not parallel to the ground, and the non - essential energy required by the grinding assembly is less, so that the energy utilization rate of the circulating ball - milling equipment is improved; after the grinding is completed, through the guiding channel extending into the annular flow channel, the rotating annular flow channel feeds the material into the discharge channel to complete the discharging, realizing the automatic feeding and grinding process of the material. In summary, the circulating ball - milling equipment and the ball - milling processing method provided by the present invention simultaneously take into account the advantages of convenient loading and unloading and high energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions for the implementation of the present invention. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed by the present invention.

[0031] Figure 1 It is a schematic diagram of the overall structure of the circulating ball - milling equipment provided by the embodiment of the present invention;

[0032] Figure 2 It is a schematic diagram of the first partial structure of the circulating ball - milling equipment provided by the embodiment of the present invention;

[0033] Figure 3 The second partial structural schematic diagram of the circulating ball milling equipment provided by the embodiment of the present invention;

[0034] Figure 4 is Figure 3 The partial enlarged structural schematic diagram at position A;

[0035] Figure 5 The top view structural schematic diagram of the circulating ball milling equipment provided by the embodiment of the present invention;

[0036] Figure 6 The partial sectional structural schematic diagram of the circulating ball milling equipment provided by the embodiment of the present invention;

[0037] Illustration: 100, bin assembly; 101, annular flow channel; 102, inner ring hole; 103, second material guiding groove; 104, discharging guiding groove; 200, grinding assembly; 201, grinding groove; 202, grinding inlet; 203, grinding outlet; 204, first material guiding groove; 210, upper grinding disc; 220, lower grinding disc;

[0038] 300, discharging assembly; 310, discharging channel; 320, guiding channel; 330, cylinder unit; 340, baffle plate; 341, inlet groove; 342, arc-shaped wall part;

[0039] 400, shunting assembly; 401, entering guiding surface; 402, outflow guiding surface; 403, entering port; 404, buffer chamber; 405, rough grinding groove; 406, rough grinding outlet; 410, first shunting part; 420, second shunting part; 500, guiding part; 501, inclined end face. Detailed implementation manners

[0040] In order to make the invention objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be intermediate components present simultaneously.

[0042] The technical solution of the present invention will be further described below with reference to the drawings and through specific embodiments.

[0043] Figure 1 It is a schematic diagram of the overall structure of the circulating ball milling equipment provided by an embodiment of the present invention. Figure 2 It is a schematic diagram of the first partial structure of the circulating ball milling equipment provided by an embodiment of the present invention. Figure 3 It is a schematic diagram of the second partial structure of the circulating ball milling equipment provided by an embodiment of the present invention. Figure 4 is Figure 3 a partial enlarged structure schematic diagram at A. Figure 5 It is a schematic top view structure of the circulating ball milling equipment provided by an embodiment of the present invention. Figure 6 It is a schematic partial cross-sectional structure of the circulating ball milling equipment provided by an embodiment of the present invention.

[0044] Embodiment 1:

[0045] The circulating ball milling equipment provided in this embodiment is applicable to the technical field of grinding and polishing spherical materials. The materials of the spherical materials can be brittle materials, metal materials, etc. In this embodiment, by improving the structure of the circulating ball milling equipment, its processing capacity is increased, and at the same time, it also has the advantages of convenient loading and unloading and high energy efficiency.

[0046] Such as Figures 1 to 5As shown, the cyclic ball milling equipment in this embodiment includes a silo assembly 100, a grinding assembly 200, and a discharging assembly 300. The silo assembly 100 includes an annular flow channel 101 that can rotate about a first direction. An inner ring hole 102 is formed inside the annular flow channel 101. Among them, the method of feeding spherical materials into the annular flow channel 101 is not limited, including but not limited to automatic feeding through a pipeline, manual pouring, etc., which are well-known to those skilled in the art and will not be specifically elaborated. It has the advantage of convenient feeding. At the same time, the rotation method of the annular flow channel 101 is also not limited, including but not limited to direct drive by a motor, belt drive with a motor, gear drive with a motor, etc. The grinding assembly 200 includes a grinding groove 201 that can rotate about the first direction. The grinding groove 201 is connected to the annular flow channel 101 to enable the material to circulate between the annular flow channel 101 and the grinding groove 201. The discharging assembly 300 includes a connected discharging channel 310 and a guiding channel 320. The inlet portion of the guiding channel 320 can extend into the annular flow channel 101. The first direction is not parallel to the ground. In this embodiment, the first direction is parallel to the gravity direction, that is, the first direction is perpendicular to the ground, that is, the grinding groove 201 is parallel to the ground. For the grinding assembly 200, during the rotation of the grinding groove 201, its gravitational potential energy changes little or approaches zero. The motor in the grinding assembly 200 does not need to consume extra energy to make the grinding groove 201 overcome gravity and flip, so that the non-essential energy required by the grinding assembly 200 is less. As another optional embodiment, the first direction can be set at an angle to the ground, as long as it does not prevent the spherical material from entering the grinding assembly 200 from the annular flow channel 101 and does not prevent the spherical material from flowing from the grinding assembly 200 into the annular flow channel 101. At the same time, since the outer wall of the annular flow channel 101 is not restricted, the processing capacity of the cyclic ball milling equipment is improved.

[0047] Specifically, when grinding materials such as spherical materials, the spherical materials are fed into the annular flow channel 101 of the bin assembly 100. Subsequently, the annular flow channel 101 rotates continuously, driving the spherical materials to rotate around the grinding assembly 200. When the materials move to the entrance of the grinding groove 201, they enter the grinding groove 201 and rotate synchronously with the grinding groove 201 to achieve grinding. When the materials rotate one circle with the grinding groove 201, they re-enter the annular flow channel 101. During the continuous rotation of the annular flow channel 101 and the grinding groove 201, the grinding of the materials can be completed. Among them, the grinding groove 201 rotates around a first direction that is not parallel to the ground, and the non-essential energy required by the grinding assembly 200 is less, so that the energy utilization rate of the cyclic ball mill equipment is improved. After the grinding is completed, through the guiding channel 320 extending into the annular flow channel 101, the self-rotating annular flow channel 101 feeds the materials into the discharge channel 310 to complete the discharge, realizing the automatic feeding and grinding process of the materials. In summary, the cyclic ball mill equipment in this embodiment takes into account the advantages of convenient loading and unloading and high energy utilization rate, and realizes the automatic feeding of materials.

[0048] Furthermore, as Figures 2 to 5 shown, the cyclic ball mill equipment further includes a shunt assembly 400; the shunt assembly 400 includes a first shunt portion 410 disposed above the annular flow channel 101 and a second shunt portion 420 disposed above the bottom wall of the grinding groove 201; one side of the first shunt portion 410 and the second shunt portion 420 facing the self-rotation direction of the annular flow channel 101 forms an inlet guiding surface 401, and one side of the first shunt portion 410 and the second shunt portion 420 facing away from the self-rotation direction of the annular flow channel 101 forms an outlet guiding surface 402; wherein, a first material guiding groove 204 is formed at the position of the grinding groove 201 corresponding to the second shunt portion 420, and a second material guiding groove 103 is formed at the position of the annular flow channel 101 corresponding to the first shunt portion 410.

[0049] It can be understood that the first material guiding groove 204 and the second material guiding groove 103 are arranged in butt joint to supply materials to circulate between the annular flow channel 101 and the grinding groove 201. At the same time, through the settings of the first shunt part 410 and the second shunt part 420, the first material guiding groove 204, the second material guiding groove 103 and the annular flow channel 101 are separated. Exemplarily, when the annular flow channel 101 rotates, it will drive the spherical materials to move synchronously. When a certain part of the annular flow channel 101 passes under the first shunt part 410, the spherical materials on this part of the annular flow channel 101 will be blocked by the first shunt part 410 and enter the first material guiding groove 204 along the arc-shaped inlet guiding surface 401, so as to complete the grinding of the spherical materials under the action of the rotating grinding groove 201. After the spherical materials rotate one circle with the grinding groove 201, the bottom wall of the grinding groove 201 will pass under the second shunt part 420, so that the spherical materials are blocked by the outlet guiding surface 402 and then return to the annular flow channel 101 through the second material guiding groove 103.

[0050] On the basis of the above embodiment, the notch of the grinding groove 201 facing the inlet guiding surface 401 is the grinding inlet 202, and the notch of the grinding groove 201 facing the outlet guiding surface 402 is the grinding outlet 203. The rotation direction of the annular flow channel 101 is opposite to that of the grinding groove 201. The grinding groove 201 is annular. Exemplarily, when the annular flow channel 101 rotates clockwise, it will drive the spherical materials to move synchronously. When a certain part of the annular flow channel 101 passes under the first shunt part 410, the spherical materials on this part of the annular flow channel 101 will be blocked by the first shunt part 410 and enter the first material guiding groove 204 along the arc-shaped inlet guiding surface 401, that is, on the bottom wall of the grinding groove 201 exposed to the outside. With the counterclockwise rotation of the grinding groove 201, the spherical materials will be driven to enter the inside of the grinding assembly 200 from the grinding inlet 202. After the grinding is completed, they will enter the first material guiding groove 204 from the grinding outlet 203, that is, the grinding of the spherical materials is completed. Then, the bottom wall of the grinding groove 201 will pass under the second shunt part 420, so that the spherical materials are blocked by the outlet guiding surface 402 and then return to the annular flow channel 101 through the second material guiding groove 103.

[0051] In this embodiment, the grinding assembly 200 includes an upper grinding disc 210 and a lower grinding disc 220 arranged in sequence along the first direction, i.e., the direction of gravity. The grinding groove 201 is formed between the upper grinding disc 210 and the lower grinding disc 220. Among them, the lower grinding disc 220 can rotate relative to the upper grinding disc 210. The rotation mode of the lower grinding disc 220 is not limited, including but not limited to direct drive by a motor, belt drive with a motor, gear drive with a motor, etc. Among them, an annular grinding groove 201 is formed on the side of the lower grinding disc 220 facing the upper grinding disc 210. When the lower grinding disc 220 rotates, the material can be driven to be ground between the lower grinding disc 220 and the upper grinding disc 210. At the same time, the first material guiding groove 204 penetrates through the lower grinding disc 220 and the upper grinding disc 210. When the material enters the first material guiding groove 204, under the rotation of the lower grinding disc 220, the material is driven to enter between the lower grinding disc 220 and the upper grinding disc 210 for grinding. When the lower grinding disc 220 rotates one circle, the material can be driven to return from the grinding outlet 203 to the first material guiding groove 204, and then flow back to the annular flow channel 101 through the outflow guiding surface 402.

[0052] It should be added that this embodiment also includes a lifting device. The lifting end of the lifting device is fixedly connected to the upper grinding disc 210. By controlling the height of the upper grinding disc 210, the gap width between the upper grinding disc 210 and the lower grinding disc 220 can be adjusted to match spherical abrasives of different sizes. At the same time, adjusting the gap width between the upper grinding disc 210 and the lower grinding disc 220 can also adjust the grinding pressure of the grinding assembly 200 on the spherical abrasives. By controlling the grinding pressure, different requirements for grinding speed and processing pressure in different process stages can be adapted. As a specific implementation manner, the lifting device includes a lifting bracket installed on the upper grinding disc 210. A servo lifting motor is installed on the lifting bracket. A trapezoidal lead screw is installed on the motor shaft of the servo lifting motor. The trapezoidal lead screw is connected to the upper grinding disc 210 through a lead screw nut. By controlling the rotation angle of the trapezoidal lead screw with the servo lifting motor, the height of the upper grinding disc 210 can be controlled.

[0053] Furthermore, as Figure 3 and Figure 4 shown, on one side of the inlet guiding surface 401, a guiding member 500 is installed on the bottom wall of the second material guiding groove 103. An inclined end surface 501 is formed on the side of the guiding member 500 facing the outer ring wall of the annular flow channel 101.

[0054] In this embodiment, an inner ring hole 102 is formed inside the annular flow channel 101. The projection of the grinding groove 201 in the first direction falls into the inner ring hole 102. The projections of the discharge channel 310 and the guiding channel 320 in the first direction fall into the inner ring hole 102. Through the above settings, the overall structure of the cyclic ball grinding device is more compact and occupies less floor space.

[0055] In this embodiment, the discharging assembly 300 further includes a cylinder unit 330 installed in the inner ring hole 102. A baffle plate 340 is installed at the telescopic end of the cylinder unit 330. A discharging guide groove 104 is formed in the annular flow channel 101 at a position corresponding to the baffle plate 340. The discharging baffle plate 340 can pass through the discharging guide groove 104 and partially enter the annular flow channel 101; a guiding channel 320 is formed in the baffle plate 340. Further, an inlet groove 341 is formed on one side of the baffle plate 340 facing the rotation direction of the annular flow channel 101 to form an inlet portion. Additionally, during the grinding of the circulating ball mill equipment, the baffle plate 340 is located in the inner ring hole 102, and the arc-shaped wall portion 342 at its end can block the discharging guide groove 104, that is, the radius of the arc-shaped wall portion 342 matches the inner wall of the annular flow channel 101. At the same time, the diameter of the outer wall of the annular flow channel 101 is larger than that of the inner wall. Therefore, when the circulating ball mill equipment discharges materials, a gap is left between the arc-shaped wall portion 342 and the outer wall.

[0056] It should be added that, as Figures 2 to 6As shown in the figure, the annular flow channel 101 includes an inner channel wall and an outer channel wall, and the outer channel wall is arranged outside the inner channel wall; an inlet 403 is opened at the junction of the first diversion part 410 and the outer channel wall of the annular flow channel 101, and a buffer chamber 404 is formed inside the first diversion part 410. A rough grinding groove 405 is formed between the second diversion part 420 and the bottom wall of the grinding groove 201. That is, a rough grinding structure such as a rough grinding plate is installed at the bottom of the second diversion part 420, and the rough grinding groove 405 is formed between the rough grinding plate and the bottom wall of the grinding groove 201. At the same time, the second diversion part 420 is provided with a rough grinding outlet 406 at the position where the inlet guiding surface 401 faces the grinding inlet 202. Through the above settings, materials with larger sizes in the materials can be screened out to prevent larger materials from blocking the grinding inlet 202. Exemplarily, after the staff pours the materials into the annular flow channel 101, the annular flow channel 101 is rotated. Under the action of centrifugal force, the larger materials will be located at the intersection of the edge of the outer channel wall and the bottom wall of the annular flow channel 101, while the smaller materials will not contact the outer channel wall. That is to say, the small materials can still be directly guided into the first material guiding groove 204 through the inlet guiding surface 401, and enter the grinding groove 201 as the lower grinding disc 220 rotates, that is, enter the gap between the upper grinding disc 210 and the lower grinding disc 220 to realize the grinding of the small materials. The large materials will enter the buffer chamber 404 through the inlet 403. At this time, the large particles can enter the rough grinding groove 405 for rough grinding, so that the size of the large materials is continuously reduced until its size is smaller than the size of the rough grinding outlet 406, and then enter the first material guiding groove 204 and enter the grinding groove 201 as the lower grinding disc 220 rotates, that is, enter the gap between the upper grinding disc 210 and the lower grinding disc 220. That is to say, the inlet height of the rough grinding groove 405 is greater than the opening height of the rough grinding outlet 406, and the opening height of the rough grinding outlet 406 is greater than or equal to the notch height of the grinding inlet 202, ensuring that after the large materials can enter the grinding inlet 202 in terms of size, the large materials can flow out of the diversion assembly 400. In the limited space of the circulating ball milling equipment, it not only ensures that the grinding assembly 200 is not blocked to improve stability, but also improves the utilization rate of the materials.

[0057] In summary, the circulating ball milling equipment provided by this embodiment has the advantages of convenient loading and unloading, high energy utilization rate, compact structure, high stability, and high grinding rate.

[0058] Embodiment Two:

[0059] The ball milling processing method provided by this embodiment uses a circulating ball milling equipment in Embodiment One, including:

[0060] S100. Put the materials into the bin assembly 100;

[0061] S200, causing the annular flow channel 101 and the grinding groove 201 (lower grinding disc 220) to rotate; wherein the rotation direction of the annular flow channel 101 is opposite to the grinding direction of the grinding groove 201;

[0062] S300 , after the grinding is completed, the inlet of the guide channel 320 is allowed to extend into the annular flow channel 101 .

[0063] Specifically, when grinding materials such as spherical materials, the spherical materials are fed into the annular flow channel 101 of the silo assembly 100, and then the annular flow channel 101 is continuously rotated to drive the spherical materials to rotate around the grinding assembly 200. When the material moves to the entrance of the grinding groove 201, it enters the grinding groove 201 and rotates synchronously with the grinding groove 201 to achieve grinding. After the material rotates one circle with the grinding groove 201, it re-enters the annular flow channel 101; in the process of continuous rotation of the annular flow channel 101 and the grinding groove 201, the grinding of the material can be completed, wherein the grinding groove 201 rotates around a first direction that is not parallel to the ground, and the grinding assembly 200 requires less unnecessary energy, so that the energy utilization rate of the circulating ball mill is improved; after the grinding is completed, the self-rotating annular flow channel 101 sends the material into the unloading channel 310 through the guide channel 320 extending into the annular flow channel 101, and the unloading is completed, thereby realizing the automatic unloading and grinding process of the material. In summary, the ball milling method in this embodiment takes into account the advantages of convenient loading and unloading and high energy utilization rate, and realizes automatic unloading of materials.

[0064] This embodiment also provides another ball milling method, which uses a circulating ball milling device, which is different from the one in the first embodiment in that its inlet groove 341 is opened on the side of the baffle plate 340 away from the rotation direction of the annular flow channel 101. At the same time, it should be emphasized that when the circulating ball milling device is grinding, the baffle plate 340 is located in the inner ring hole 102, and the arc-shaped wall portion 342 at its end can block the discharge guide groove 104, that is, the radius of the arc-shaped wall portion 342 matches the inner channel wall of the annular flow channel 101, and at the same time, the diameter of the outer channel wall of the annular flow channel 101 is larger than the diameter of the inner channel wall. Therefore, when the circulating ball milling device is unloading, a gap is left between the arc-shaped wall portion 342 and the outer channel wall; at the same time, the extended baffle plate 340 is located at one end of the annular flow channel 101 close to the outflow guide surface 402.

[0065] The ball milling method comprises:

[0066] S110, putting materials into the silo assembly 100;

[0067] S210, causing the annular flow channel 101 and the grinding groove 201 to rotate; wherein the rotation direction of the annular flow channel 101 is opposite to the grinding direction of the grinding groove 201;

[0068] S310. After the grinding is completed, the inlet of the guiding channel 320 is extended into the annular flow channel 101. The annular flow channel 101 rotates in the opposite direction of its rotation direction, and the grinding groove 201 (lower grinding disk 220) rotates in the opposite direction of its rotation direction. It can be understood that at this time, under the action of the annular flow channel 101 rotating in the reverse direction, the large materials can pass through the inlet 403 in the reverse direction and return to the annular flow channel 101. Along with the reverse rotation of the annular flow channel 101, when it is at the intersection position of the edge close to the outer wall and the bottom wall of the annular flow channel 101, the large materials reach the gap between the arc-shaped wall 342 and the outer wall in the reverse direction. At this time, the large materials are temporarily stored in this gap, avoiding their inflow into the discharge channel 310 and facilitating the subsequent picking out by the staff. Among them, the extended baffle 340 is located at one end of the annular flow channel 101 close to the outflow guiding surface 402, which helps to extend the path of the large materials to ensure that the large materials can be at the intersection position of the edge close to the outer wall and the bottom wall of the annular flow channel 101, avoiding the large materials from being mixed into the ground materials.

[0069] In summary, the ball milling processing method provided by this embodiment has the advantages of convenient loading and unloading, high energy utilization rate, compact structure, high stability, and high grinding rate.

[0070] As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cyclic ball milling device, characterized in that, include: A silo assembly (100), the silo assembly (100) comprising an annular flow channel (101) capable of rotating about a first direction, an inner annular hole (102) being formed on the inner side of the annular flow channel (101); A grinding assembly (200), the grinding assembly (200) comprising a grinding groove (201) capable of rotating about the first direction, the grinding groove (201) being in communication with the annular flow channel (101) so as to allow materials to circulate between the annular flow channel (101) and the grinding groove (201); A discharge assembly (300), the discharge assembly (300) comprising a discharge channel (310) and a guide channel (320) that are connected to each other, the inlet of the guide channel (320) being able to extend into the annular flow channel (101); A flow splitter assembly (400), the flow splitter assembly (400) comprising a first flow splitter portion (410) arranged above the annular flow channel (101) and a second flow splitter portion (420) arranged above the bottom wall of the grinding groove (201); wherein the first direction is not parallel to the ground; The first flow splitter (410) and the second flow splitter (420) form an inlet guide surface (401) on the side facing the rotation direction of the annular flow channel (101), and the first flow splitter (410) and the second flow splitter (420) form an outlet guide surface (402) on the side facing away from the rotation direction of the annular flow channel (101); The notch of the grinding groove (201) facing the entry guide surface (401) is a grinding entrance (202); a first material guide groove (204) is provided at a position of the grinding groove (201) corresponding to the second flow diversion portion (420); and a second material guide groove (103) is provided at a position of the annular flow channel (101) corresponding to the first flow diversion portion (410); The annular flow channel (101) comprises an inner channel wall and an outer channel wall, wherein the outer channel wall is arranged on the outer side of the inner channel wall; an inlet (403) is provided at the junction of the first diverter portion (410) and the outer channel wall of the annular flow channel (101); a buffer chamber (404) is formed inside the first diverter portion (410); a coarse grinding groove (405) is formed between the second diverter portion (420) and the bottom wall of the grinding groove (201); and a coarse grinding outlet (406) is provided on the second diverter portion (420) at a position where the second diverter portion (420) enters the guide surface (401) toward the grinding inlet (202).

2. The circulating ball milling equipment according to claim 1, characterized in that, The notch of the grinding groove (201) facing the outflow guide surface (402) is a grinding outlet (203); The rotation direction of the annular flow channel (101) is opposite to the rotation direction of the grinding groove (201).

3. A cyclic ball milling device according to claim 1, characterized in that, The grinding assembly (200) comprises an upper grinding disc (210) and a lower grinding disc (220) which are arranged in sequence along the first direction, and the grinding groove (201) is formed between the upper grinding disc (210) and the lower grinding disc (220); wherein the lower grinding disc (220) is rotatable relative to the upper grinding disc (210).

4. A cyclic ball milling device according to claim 1, characterized in that, On one side of the inlet guiding surface (401), a guiding member (500) is installed on the bottom wall of the second material guiding groove (103), and an inclined end surface (501) is formed on one side of the guiding member (500) facing the outer ring wall of the annular flow channel (101).

5. A cyclic ball milling device according to claim 1, characterized in that, An inner ring hole (102) is formed inside the annular flow channel (101); the projection of the grinding groove (201) in the first direction falls into the inner ring hole (102); the projections of the discharge channel (310) and the guiding channel (320) in the first direction fall into the inner ring hole (102).

6. The cyclic ball milling device according to claim 5, characterized in that, The discharge assembly (300) further includes a cylinder unit (330) installed in the inner ring hole (102), a baffle plate (340) is installed at the telescopic end of the cylinder unit (330), and a discharge guiding groove (104) is formed at the position of the annular flow channel (101) corresponding to the baffle plate (340); the guiding channel (320) is formed on the baffle plate (340).

7. A cyclic ball milling device according to claim 6, characterized in that, An inlet groove (341) is formed on one side of the baffle plate (340) facing the rotation direction of the annular flow channel (101) to form the inlet portion.

8. A cyclic ball milling device according to any one of claims 1-7, characterized in that, The first direction is parallel to the gravity direction.

9. A ball milling processing method, characterized in that, A circulating ball milling device according to any one of claims 1-8, comprising: Put the material into the bin assembly; Make the annular flow channel and the grinding groove rotate; After the grinding is completed, make the inlet portion of the guiding channel extend into the annular flow channel.

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