Automatic grinding device for refining barite powder

Abstract

The barite powder refining automatic grinding device comprises a machine shell, a grinding box and a grinding assembly arranged in the grinding box, the grinding box is movably installed in the machine shell, and an annular first supporting assembly is fixedly installed on the outer wall of the grinding box; a second supporting assembly fixedly connected is arranged between the bottom of the grinding box and the inner wall of the machine shell, a driving assembly is arranged at the bottom of the grinding box, the grinding assembly comprises an inner grinding cone and an outer grinding cone groove penetrating up and down, the inner grinding cone is arranged in the outer grinding cone groove, and a lifting assembly fixedly connected is arranged at the top of the machine shell. According to the barite particle grinding device, through the synergistic effect of the lifting assembly, the driving assembly, the grinding assembly, the first supporting assembly and the second supporting assembly, optimization of the barite particle grinding process is achieved, the grinding efficiency is effectively improved, and meanwhile the diversified requirements of users for the particle size are met.

Description

Technical Field

[0001] The utility model relates to the technical field of barite processing equipment, in particular to a barite powder fine automatic grinding device. Background Art

[0002] In the processing of barite before flotation, the ore is first collected and transported to the processing plant. Subsequently, the ore undergoes a crushing step, including preliminary crushing and fine crushing, to ensure that the size of the ore particles meets the requirements of subsequent grinding. Grinding is a key step in this processing process. It determines the fineness of the barite powder, which in turn affects the subsequent flotation effect. The grinding process sends the crushed ore particles into the grinder for fine grinding to make their fineness meet the requirements of the flotation process. Barite powder with appropriate fineness can react more effectively with flotation reagents, thereby improving flotation efficiency and product quality. Therefore, the grinding step is more important for the fine processing and flotation effect of barite powder.

[0003] In the prior art, the patent with application number CN202221201265.4 discloses a barite powder grinding equipment, which includes a grinding box, a support leg, a hopper, a grinding chamber, a feed hopper, a driving motor, a grinding handle, a grinding hammer and a discharge pipe. The grinding box is provided with a hopper and a grinding chamber at the upper and lower parts respectively. The grinding chamber is funnel-shaped, which is convenient for the falling and grinding of materials. The driving motor drives the grinding hammer to rotate in the grinding chamber through the grinding handle. The side surface of the grinding hammer is conical, and its upper and lower ends are both set to spherical surfaces, forming a gradually decreasing distance with the side wall of the grinding chamber, so that the material is gradually squeezed and ground during the falling process. A pushing blade is fixedly installed on the outer surface of the grinding hammer, and the pitch gradually increases from top to bottom to avoid the material from being pressed and agglomerated. The equipment realizes automatic grinding by setting an upper feed hopper for feeding, a driving motor drives the grinding hammer to grind, and a lower discharge pipe for discharging. It reduces manual labor and improves grinding efficiency.

[0004] The above-mentioned barite powder grinding equipment has made certain progress in automation and grinding efficiency, but there are still some shortcomings. First, the equipment cannot obtain barite powder of different particle sizes by changing the position of the grinding hammer in the grinding chamber, which limits the flexibility and applicability of the equipment and cannot meet the production needs of different particle size requirements. Secondly, during grinding, only the grinding hammer rotates, while the grinding chamber is fixed, which limits the shear force and impact force during the grinding process, and there is room for improvement in grinding efficiency. Utility Model Content

[0005] In view of the technical defects existing in the background technology, the present invention proposes a barite powder fine automatic grinding device. In order to further solve the above technical problems and meet actual needs, the specific technical solutions are as follows:

[0006] A device for automatically grinding fine barite powder comprises a casing, a grinding box and a grinding assembly arranged in the grinding box, wherein the grinding box is movably installed in the casing, the bottom of the casing is connected to support legs, and a first fixedly installed annular support assembly is provided on the outer wall of the grinding box, the first support assembly surrounds the top and bottom positions of the grinding box respectively, a second fixedly connected support assembly is provided between the bottom of the grinding box and the inner wall of the casing, a driving assembly is provided at the bottom of the grinding box, the grinding assembly comprises an inner grinding cone and an outer grinding cone groove which runs through the top and the bottom, the inner grinding cone is arranged in the outer grinding cone groove, a fixedly connected lifting assembly is provided on the top of the casing, the lifting assembly is fixedly connected to the inner grinding cone, and the inner grinding cone is fixedly installed in the grinding box.

[0007] Furthermore, the first support assembly includes a rotating support ring and a first ball, the rotating support ring is fixedly mounted on the outer walls of the top and bottom of the grinding box respectively, the inner wall of the casing is provided with a support ring groove at the corresponding position of the rotating support ring, the rotating support ring can be rotatably placed in the support ring groove, and a number of freely rotatable first balls are embedded between the upper and lower surfaces of the rotating support ring and the support ring groove.

[0008] Furthermore, the grinding assembly also includes a first drive motor and a connecting shaft, one end of the connecting shaft is connected to the top of the inner grinding cone, and the other end of the connecting shaft is connected to the power output shaft of the first drive motor. A grinding slit with a width component that decreases from top to bottom is provided between the inner grinding cone and the outer grinding cone groove, and a number of evenly distributed grinding protrusions are provided on the surface of the inner grinding cone and the groove of the outer grinding cone. The rotation directions of the inner grinding cone and the outer grinding cone groove are opposite.

[0009] Furthermore, a first discharge barrel connected to the lower end of the outer grinding cone groove is provided through the center of the bottom of the grinding box, and a second discharge barrel corresponding to the position of the first discharge barrel is provided at the bottom of the casing, and the first discharge barrel is movably sleeved inside the second discharge barrel.

[0010] Furthermore, the second support assembly includes an upper support ring, a lower support ring and a second ball bearing. The upper surface of the upper support ring is connected to the outer wall of the bottom of the grinding box, and the lower surface of the lower support ring is connected to the inner wall of the bottom of the casing. The lower surface of the upper support ring is provided with a sliding convex ring, and the upper surface of the lower support ring is provided with a mounting ring groove that slides with the sliding convex ring. The sliding convex ring is installed in the mounting ring groove, and a number of freely rotatable second balls are embedded between the sliding convex ring and the mounting ring groove.

[0011] Furthermore, the drive assembly includes a second drive motor, a rotating shaft, a first bevel gear, and a second bevel gear. The second bevel gear is fixedly mounted on the bottom outer wall of the grinding box. The first bevel gear is arranged on the right side of the second bevel gear and meshes with each other. The second drive motor is arranged outside the casing. One end of the rotating shaft is connected to the power output shaft of the second drive motor, and the other end of the rotating shaft transversely passes through one side wall of the casing and is connected to the first bevel gear.

[0012] Furthermore, the lifting assembly includes a lifting cylinder, a support frame and a guide rod. The support frame is arranged above the casing, and the lifting cylinder is symmetrically arranged between the support frame and the top of the casing. The telescopic rod end of the lifting cylinder is connected to the support frame, and the cylinder end of the lifting cylinder is fixedly installed on the top of the casing. Guide channels are longitudinally penetrated at the left and right ends of the support frame, and the guide rod is symmetrically arranged on the outside of the lifting cylinder. One end of the guide rod passes through the guide channel and is connected to the top of the casing. The first drive motor is installed on the upper surface of the support frame, and one end of the connecting shaft longitudinally penetrates the support frame and is connected to the power output shaft of the first drive motor.

[0013] The beneficial effects of the utility model are:

[0014] The utility model can flexibly adjust the position of the inner grinding cone in the outer grinding cone groove, thereby changing the width of the grinding slit, and realizing the fine grinding of barite powder with different particle sizes, thereby improving the diversity of products and meeting the personalized needs of different users for particle size. The synergistic effect of the driving component and the grinding component enables the inner grinding cone and the outer grinding cone groove to rotate in opposite directions to enhance the shear force and impact force during the grinding process, thereby improving the grinding efficiency of the barite. The first support component and the second support component provide stable support for the grinding box in the casing, so that the grinding box can rotate freely in the casing, further ensuring the flexibility and efficiency of grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the internal structure of the utility model.

[0016] Figure 2 for Figure 1 A partial enlarged schematic diagram of the AA point in the middle.

[0017] Figure 3 for Figure 1 A partial enlarged schematic diagram of the middle BB.

[0018] Figure markings: casing 1, support leg 11, second discharging cylinder 12, support ring groove 13, grinding box 2, first discharging cylinder 21, grinding assembly 3, inner grinding cone 31, outer grinding cone groove 32, grinding slit 33, grinding protrusion 34, first drive motor 35, connecting shaft 36, first support assembly 4, rotating support ring 41, first ball 42, second support assembly 5, upper support ring 51, sliding protrusion ring 52, lower support ring 53, mounting ring groove 54, second ball 56, drive assembly 6, second drive motor 61, rotating shaft 62, first bevel gear 63, second bevel gear 64, lifting assembly 7, lifting electric cylinder 71, support frame 72, guide rod 73, guide channel 74. DETAILED DESCRIPTION

[0019] The following describes the implementation of the present invention in conjunction with the accompanying drawings and relevant embodiments. The implementation of the present invention is not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0020] like Figures 1 to 3 As shown, the utility model provides a technical solution: a barite powder fine automatic grinding device, comprising a casing 1, a grinding box 2 and a grinding assembly 3 arranged in the grinding box 2, the grinding box 2 is movably installed in the casing 1, the bottom of the casing 1 is connected to a supporting leg 11, and a first fixedly installed annular support assembly 4 is provided on the outer wall of the grinding box 2, the first support assembly 4 is respectively surrounded by the top and bottom positions of the grinding box 2, a second fixedly connected support assembly 5 is provided between the bottom of the grinding box 2 and the inner wall of the casing 1, a driving assembly 6 is provided at the bottom of the grinding box 2, the grinding assembly 3 includes an inner grinding cone 31 and an outer grinding cone groove 32 which passes through from top to bottom, the inner grinding cone 31 is arranged in the outer grinding cone groove 32, a fixedly connected lifting assembly 7 is provided on the top of the casing 1, the lifting assembly 7 is fixedly connected to the inner grinding cone 31, and the inner grinding cone 31 is fixedly installed in the grinding box 2.

[0021] The utility model movably installs the grinding box 2 in the casing 1. Through the support and guiding effect of the first support assembly 4 and the second support assembly 5, the grinding box 2 can rotate stably in the casing 1, while reducing the friction and resistance during the rotation process, providing the grinding box 2 with the necessary degree of freedom during the grinding process. The grinding assembly 3 includes an inner grinding cone 31 and an outer grinding cone groove 32. The grinding slit 33 gradually decreases in width from top to bottom, which can gradually grind the barite particles to the required particle size. The lifting assembly 7 can drive the inner grinding cone 31 to the outer grinding cone groove 32 through the synergistic effect of the support frame 72 and the lifting electric cylinder 71. The cone groove 32 moves up and down, so that the overall width of the grinding slit 33 can be flexibly changed to meet the grinding needs of barite powder of different particle sizes. The driving component 6 realizes the rotation drive of the grinding box 2 through the transmission of the second driving motor 61, the rotating shaft 62, the first bevel gear 63 and the second bevel gear 64. At the same time, the first driving motor 35 drives the inner grinding cone 31 to rotate through the connecting shaft 36, and the rotation direction is opposite to the outer grinding cone groove 32. The reverse rotation of the inner grinding cone 31 and the outer grinding cone groove 32 can enhance the shear force and impact force during the grinding process, thereby further improving the grinding efficiency of barite.

[0022] As one of the preferred embodiments of the present invention, Figures 1 to 3 As shown, the first support assembly 4 includes a rotating support ring 41 and a first ball 42. The rotating support ring 41 is fixedly mounted on the outer walls of the top and bottom of the grinding box 2 respectively. The inner wall of the casing 1 is provided with a support ring groove 13 at the corresponding position of the rotating support ring 41. The rotating support ring 41 is rotatably placed in the support ring groove 13, and a number of freely rotatable first balls 42 are embedded between the upper and lower surfaces of the rotating support ring 41 and the support ring groove 13.

[0023] The first support assembly 4 is a connecting component between the grinding box 2 and the casing 1. The rotating support ring 41 of the first support assembly 4 is respectively fixedly mounted on the outer walls of the top and bottom of the grinding box 2, so that the position of the grinding box 2 in the casing 1 is stable, and the grinding box 2 is prevented from unnecessary displacement or shaking during the grinding process. The inner wall of the casing 1 is provided with a support ring groove 13 at the position corresponding to the rotating support ring 41. The rotating support ring 41 can be rotatably placed in the support ring groove 13, so that the casing 1 can provide support force for the grinding box 2. Through the cooperation between the rotating support ring 41 and the support ring groove 13, the grinding box 2 can achieve smooth rotation in the casing 1, thereby providing basic structural conditions for the relative movement between the inner grinding cone 31 and the outer grinding cone groove 32, thereby realizing the grinding of barite powder. The freely rotating first ball 42 embedded between the upper and lower surfaces of the rotating support ring 41 and the support ring groove 13 can reduce the friction resistance between the rotating support ring 41 and the support ring groove 13, so that the rotation of the grinding box 2 is smoother.

[0024] As one of the preferred embodiments of the present invention, Figure 1 and Figure 2 As shown, the grinding assembly 3 also includes a first drive motor 35 and a connecting shaft 36, one end of the connecting shaft 36 is connected to the top of the inner grinding cone 31, and the other end of the connecting shaft 36 is connected to the power output shaft of the first drive motor 35, and a grinding slit 33 with a width component that decreases from top to bottom is provided between the inner grinding cone 31 and the outer grinding cone groove 32, and a number of evenly distributed grinding protrusions 34 are provided on the surface of the inner grinding cone 31 and the groove of the outer grinding cone groove 32, and the rotation directions of the inner grinding cone 31 and the outer grinding cone groove 32 are opposite.

[0025] The inner grinding cone 31 is driven by the first driving motor 35 through the connecting shaft 36. The inner grinding cone 31 is arranged in the outer grinding cone groove 32 and forms a grinding space together with the outer grinding cone groove 32. When the inner grinding cone 31 rotates, it can produce shearing and extrusion effects with the outer grinding cone groove 32, thereby grinding the barite particles to the required particle size. There is a grinding slit 33 between the inner grinding cone 31 and the outer grinding cone groove 32, and the width gradually decreases from top to bottom, so that the shearing force and extrusion force on the barite particles during the grinding process are gradually enhanced, thereby being able to more effectively grind the barite particles. The barite particles are ground to the required particle size. At the same time, the lifting component 7 can also drive the inner grinding cone 31 to move up and down in the outer grinding cone groove 32 through the support frame 72 and the lifting cylinder 71 as needed, so that the width of the grinding slit 33 can be flexibly changed to adapt to the grinding needs of barite particles of different particle sizes, and improve the flexibility and adaptability of the equipment. The grinding protrusions 34 on the surface of the inner grinding cone 31 and the outer grinding cone groove 32 can increase the contact area and friction with the barite particles, thereby further accelerating the grinding process and improving the grinding quality.

[0026] During the grinding process, the first drive motor 35 drives the inner grinding cone 31 to rotate through the connecting shaft 36. At the same time, the drive assembly 6 drives the outer grinding cone groove 32 inside the grinding box 2 to rotate. The rotation directions of the inner grinding cone 31 and the outer grinding cone groove 32 are opposite. When the barite particles enter the grinding slit 33, the barite particles are subjected to extrusion and shearing from the inner grinding cone 31 and the outer grinding cone groove 32. As the grinding process proceeds, the particle size of the barite particles gradually decreases and is finally discharged through the outlet of the grinding slit 33. At the same time, due to the presence of the grinding protrusion 34, the friction and shear force in the grinding process are further enhanced, thereby improving the grinding efficiency and grinding quality.

[0027] As one of the preferred embodiments of the present invention, Figure 1As shown, a first discharge barrel 21 connected to the lower end of the outer grinding cone groove 32 is provided at the center of the bottom of the grinding box 2, and a second discharge barrel 12 corresponding to the position of the first discharge barrel 21 is provided at the bottom of the casing 1, and the first discharge barrel 21 is movably sleeved inside the second discharge barrel 12.

[0028] During the grinding process, the barite powder refined by the grinding slit 33 between the inner grinding cone 31 and the outer grinding cone groove 32 will slide along the inner wall of the outer grinding cone groove 32 to its bottom, and the first discharging barrel 21 will discharge the ground barite powder from the inside of the grinding box 2, and then continue to flow downward through the first discharging barrel 21, and finally be discharged to the outside of the device from the outlet of the second discharging barrel 12. The first discharging barrel 21 is movably sleeved inside the second discharging barrel 12, ensuring the free rotation of the grinding box 2 in the casing 1, and avoiding obstruction of the discharge channel caused by the rotation of the grinding box 2.

[0029] As one of the preferred embodiments of the present invention, Figure 1 and Figure 3 As shown, the second support assembly 5 includes an upper support ring 51, a lower support ring 53 and a second ball 56. The upper surface of the upper support ring 51 is connected to the bottom outer wall of the grinding box 2, and the lower surface of the lower support ring 53 is connected to the bottom inner wall of the casing 1. The lower surface of the upper support ring 51 is provided with a sliding convex ring 52, and the upper surface of the lower support ring 53 is provided with a mounting ring groove 54 that slides with the sliding convex ring 52. The sliding convex ring 52 is installed in the mounting ring groove 54, and a number of freely rotatable second balls 56 are embedded between the sliding convex ring 52 and the mounting ring groove 54.

[0030] The second support assembly 5 provides a stable support structure for the grinding box 2 through the connection between the upper support ring 51 and the outer wall of the bottom of the grinding box 2, and the connection between the lower support ring 53 and the inner wall of the bottom of the casing 1, ensuring the stable position of the grinding box 2 in the casing 1. The sliding convex ring 52 can rotate in the mounting ring groove 54. The rolling of the second ball 56 can reduce the friction between the sliding convex ring 52 and the mounting ring groove 54, making the rotation of the grinding box 2 smoother and more flexible, and facilitating the relative movement between the grinding cones during the grinding process.

[0031] The first support assembly 4 is located on the top and bottom outer walls of the grinding box 2, and the second support assembly 5 is installed between the bottom of the grinding box 2 and the inner wall of the casing 1, providing all-round support for the grinding box 2 and ensuring the stability of the grinding box 2 in the casing 1. The first support assembly 4 and the second support assembly 5 both adopt a rolling support method, which provides a structural basis for the grinding box 2 to be able to rotate flexibly in the casing 1.

[0032] As one of the preferred embodiments of the present invention, Figure 1 and Figure 2As shown, the drive assembly 6 includes a second drive motor 61, a rotating shaft 62, a first bevel gear 63, and a second bevel gear 64. The second bevel gear 64 is fixedly mounted on the bottom outer wall of the grinding box 2. The first bevel gear 63 is arranged on the right side of the second bevel gear 64 and meshes with each other. The second drive motor 61 is arranged on the outside of the casing 1. One end of the rotating shaft 62 is connected to the power output shaft of the second drive motor 61, and the other end of the rotating shaft 62 transversely passes through one side wall of the casing 1 and is connected to the first bevel gear 63.

[0033] When the second drive motor 61 is started, the second drive motor 61 transmits the rotational power to the rotating shaft 62 through the power output shaft. After receiving the power, the rotating shaft 62 starts to rotate. Since one end of the rotating shaft 62 is connected to the first bevel gear 63, the rotation of the rotating shaft 62 will drive the first bevel gear 63 to rotate. The first bevel gear 63 and the second bevel gear 64 are meshed with each other. Therefore, when the first bevel gear 63 rotates, the first bevel gear 63 drives the second bevel gear 64 to rotate. The second bevel gear 64 is fixedly mounted on the bottom outer wall of the grinding box 2, so that the grinding box 2 will also rotate with the rotation of the second bevel gear 64. The rotation of the grinding box 2 will drive the outer grinding cone groove 32 inside it to rotate together. In this way, the outer grinding cone groove 32 can complete the grinding of barite powder with the cooperation of the inner grinding cone 31.

[0034] As one of the preferred embodiments of the present invention, the lifting assembly 7 includes a lifting cylinder 71, a support frame 72 and a guide rod 73. The support frame 72 is arranged above the casing 1, and the lifting cylinder 71 is symmetrically arranged between the support frame 72 and the top of the casing 1. The telescopic rod end of the lifting cylinder 71 is connected to the support frame 72, and the cylinder end of the lifting cylinder 71 is fixedly installed on the top of the casing 1. Guide channels 74 are longitudinally penetrated at the left and right ends of the support frame 72. The guide rod 73 is symmetrically arranged on the outside of the lifting cylinder 71, and one end of the guide rod 73 passes through the guide channel 74 and is connected to the top of the casing 1. The first drive motor 35 is installed on the upper surface of the support frame 72, and one end of the connecting shaft 36 longitudinally penetrates the support frame 72 and is connected to the power output shaft of the first drive motor 35.

[0035] The lifting assembly 7 controls the up and down movement of the inner grinding cone 31 in the outer grinding cone groove 32, thereby adjusting the overall width of the grinding slit 33 between the two, so that the device can grind barite powder of different particle sizes. The telescopic rod end of the lifting electric cylinder 71 is connected to the support frame 72, and the cylinder end is fixedly mounted on the top of the casing 1. The guide channels 74 set at the left and right ends of the support frame 72 cooperate with the guide rod 73 to provide additional guiding function for the support frame 72 to prevent it from offsetting or shaking during movement. When the telescopic rod of the lifting electric cylinder 71 begins to extend and retract, it drives the support frame 72 and the first drive motor 35 and the connecting shaft 36 installed on the support frame 72 to move up and down as a whole. Since one end of the connecting shaft 36 is connected to the top of the inner grinding cone 31, when the support frame 72 moves up and down, the connecting shaft 36 will drive the inner grinding cone 31 to move together, so that the position of the inner grinding cone 31 in the outer grinding cone groove 32 changes, thereby changing the width of the grinding slit 33.

[0036] It should be noted that the width of the grinding slit 33 determines the particle size of the ground barite powder. When the width of the grinding slit 33 is small, the particle size of the ground barite powder is finer. Conversely, when the width of the grinding slit 33 is large, the particle size of the ground barite powder is coarser. Therefore, by controlling the extension and contraction amount of the lifting electric cylinder 71, the width of the grinding slit 33 can be adjusted, thereby grinding barite powder of different particle sizes.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A barite powder fine automatic grinding device, comprising a housing (1), a grinding box (2), and a grinding assembly (3) arranged in the grinding box (2), characterized in that: The grinding box (2) is movably mounted in the casing (1), the bottom of the casing (1) is connected to a support leg (11), the outer wall of the grinding box (2) is provided with a first support assembly (4) in a fixed annular shape, the first support assembly (4) surrounds the top and bottom positions of the grinding box (2) respectively, a second support assembly (5) fixedly connected is provided between the bottom of the grinding box (2) and the inner wall of the casing (1), the bottom of the grinding box (2) is provided with a driving assembly (6), the grinding assembly (3) includes an inner grinding cone (31) and an outer grinding cone groove (32) extending from top to bottom, the inner grinding cone (31) is arranged in the outer grinding cone groove (32), the top of the casing (1) is provided with a fixedly connected lifting assembly (7), the lifting assembly (7) is fixedly connected to the inner grinding cone (31), and the inner grinding cone (31) is fixedly mounted in the grinding box (2).

2. A barite powder fine automatic grinding device according to claim 1, characterized in that, The first support assembly (4) includes a rotating support ring (41) and first balls (42), the rotating support ring (41) being fixedly mounted on the outer walls of the top and bottom of the grinding box (2), respectively, the inner wall of the housing (1) being provided with a support ring groove (13) at a position corresponding to the rotating support ring (41), the rotating support ring (41) being rotatably placed in the support ring groove (13), and a plurality of freely rotatable first balls (42) being embedded between the upper and lower surfaces of the rotating support ring (41) and the support ring groove (13).

3. A barite powder fine automatic grinding device according to claim 1, characterized in that, The grinding assembly (3) further comprises a first drive motor (35) and a connecting shaft (36), one end of the connecting shaft (36) being connected to the top of the inner grinding cone (31), and the other end of the connecting shaft (36) being connected to the power output shaft of the first drive motor (35), a grinding slit (33) whose width decreases from top to bottom is provided between the inner grinding cone (31) and the outer grinding cone groove (32), a plurality of evenly distributed grinding protrusions (34) are provided on the surface of the inner grinding cone (31) and in the groove of the outer grinding cone groove (32), and the inner grinding cone (31) and the outer grinding cone groove (32) rotate in opposite directions.

4. A barite powder fine automatic grinding device according to claim 1, characterized in that, A first discharge barrel (21) communicating with the lower end of the outer grinding cone groove (32) is provided at the center of the bottom of the grinding box (2), and a second discharge barrel (12) corresponding to the position of the first discharge barrel (21) is provided at the bottom of the housing (1), and the first discharge barrel (21) is movably sleeved inside the second discharge barrel (12).

5. A barite powder fine automatic grinding device according to claim 1, characterized in that, The second support assembly (5) comprises an upper support ring (51), a lower support ring (53) and a second ball (56), wherein the upper surface of the upper support ring (51) is connected to the outer wall of the bottom of the grinding box (2), and the lower surface of the lower support ring (53) is connected to the inner wall of the bottom of the housing (1). The lower surface of the upper support ring (51) is provided with a sliding convex ring (52), and the upper surface of the lower support ring (53) is provided with a mounting ring groove (54) that is slidably matched with the sliding convex ring (52). The sliding convex ring (52) is installed in the mounting ring groove (54), and a plurality of freely rotatable second ball (56) are embedded between the sliding convex ring (52) and the mounting ring groove (54).

6. A barite powder fine automatic grinding device according to claim 1, characterized in that, The driving assembly (6) includes a second driving motor (61), a rotating shaft (62), a first bevel gear (63), and a second bevel gear (64). The second bevel gear (64) is fixedly mounted on the bottom outer wall of the grinding box (2). The first bevel gear (63) is arranged on the right side of the second bevel gear (64) and meshes with each other. The second driving motor (61) is arranged outside the casing (1). One end of the rotating shaft (62) is connected to the power output shaft of the second driving motor (61). The other end of the rotating shaft (62) transversely passes through one side wall of the casing (1) and is connected to the first bevel gear (63).

7. A barite powder fine automatic grinding device according to claim 3, characterized in that, The lifting assembly (7) includes a lifting cylinder (71), a support frame (72) and a guide rod (73), wherein the support frame (72) is arranged above the housing (1), and the lifting cylinder (71) is symmetrically arranged between the support frame (72) and the top of the housing (1), the telescopic rod end of the lifting cylinder (71) is connected to the support frame (72), and the cylinder end of the lifting cylinder (71) is fixedly installed on the top of the housing (1), and the left and right ends of the support frame (72) are longitudinally penetrated by guide channels (74), and the guide rod (73) is symmetrically arranged on the outside of the lifting cylinder (71), and one end of the guide rod (73) passes through the guide channel (74) and is connected to the top of the housing (1), and the first drive motor (35) is installed on the upper surface of the support frame (72), and one end of the connecting shaft (36) longitudinally penetrates the support frame (72) and is connected to the power output shaft of the first drive motor (35).

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