Fine grinding machine

Abstract

The invention relates to a fine grinding machine. Comprising a grinding barrel, a grinding device arranged in the grinding barrel, a driving device arranged on the grinding barrel and used for driving the grinding device to operate, two supports symmetrically and fixedly arranged on the grinding barrel, a storage device located on the upper middle portion of the grinding barrel and fixedly arranged on the two supports, and a discharging device located in the grinding barrel and arranged below the grinding device. The heat dissipation device is used for cooling the grinding device; the grinding device can finely grind materials, directly acts on the ground materials in an air cooling mode, is good in cooling effect and can improve the grinding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding, and particularly to a fine grinding machine. Background Art

[0002] Grinding machines are widely used in the production and processing of pulverization. They are devices that grind materials into fine particles, and have excellent properties such as a wide range of processed materials and low processing costs. Especially in the paint production industry, the grinding fineness of materials determines the surface smoothness after the paint is applied. There are the following problems with the grinding machines in the prior art: First, the fineness of the ground materials is insufficient, and the fluidity of the materials during the grinding process is poor, resulting in an impact on the grinding efficiency; Second, the grinding wheel is mostly cooled by heat conduction, and the cooling effect is poor. Summary of the Invention

[0003] The content part of this application is used to briefly introduce concepts, which will be described in detail in the subsequent detailed implementation part. The content part of this application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0004] In order to solve the technical problems mentioned in the above background art part, some embodiments of this application provide a fine grinding machine, including a grinding barrel, a grinding device arranged in the grinding barrel, a driving device arranged on the grinding barrel and used to drive the operation of the grinding device, two support frames symmetrically fixed on the grinding barrel, a storage device located above the middle of the grinding barrel and fixed on the two support frames, a discharging device located in the grinding barrel and arranged below the grinding device, and a heat dissipation device used for cooling the grinding device;

[0005] The grinding device includes a first gear coaxially arranged with the grinding barrel and rotatably arranged therein, a first grinding wheel coaxially arranged with the first gear and fixed thereon, a turntable rotatably arranged at the upper end of the grinding barrel, a cylinder body fixed on the turntable, a second grinding wheel fixed at the bottom of the cylinder body and arranged in cooperation with the first grinding wheel, a third grinding wheel symmetrically arranged with the first grinding wheel and fixed on the first gear, a fourth grinding wheel arranged below the third grinding wheel and arranged in cooperation with it, a first through hole arranged at the center of the first grinding wheel, a second through hole coinciding with the first through hole and arranged at the center of the second grinding wheel, a third through hole coinciding with the first through hole and arranged on the third grinding wheel, a cone block located in the third through hole and fixed at the center of the fourth grinding wheel, a substrate fixed in the second through hole, a connecting rod with two ends respectively fixed at the centers of the cone block and the substrate, a first conical grinding surface arranged on the first grinding wheel, a second conical grinding surface arranged on the second grinding wheel, a third conical grinding surface arranged on the third grinding wheel, and a fourth conical grinding surface arranged on the fourth grinding wheel.

[0006] Specifically, the distance from the first conical grinding surface to the second conical grinding surface is gradually increased from the center of the first grinding wheel outward, and the distance from the third conical grinding surface to the fourth conical grinding surface is gradually decreased from the center of the third grinding wheel outward.

[0007] Specifically, a plurality of first guide plates are equidistantly and annularly distributed on the first conical grinding surface, and there is a gap between the plurality of first guide plates and the second conical grinding surface; a plurality of second guide plates are equidistantly and annularly distributed on the fourth conical grinding surface, and there is a gap between the plurality of second guide plates and the third conical grinding surface.

[0008] Specifically, the material storage device includes a material bucket fixedly arranged on two support frames, a bucket cover flip - arranged at the upper end of the material bucket, and a feeding pipe with one end fixedly inserted through the turntable and the other end rotatably arranged at the bottom of the material bucket.

[0009] Specifically, the discharging device includes a partition plate located below the fourth grinding wheel and fixedly arranged in the grinding bucket, a discharging pipe fixedly arranged on the partition plate, a first arc - shaped plate fixedly sleeved on the discharging pipe and fixedly arranged on the inner wall of the grinding bucket, a second arc - shaped plate located below the first arc - shaped plate and fixedly arranged on the inner wall of the grinding bucket, a switching disk located between the first arc - shaped plate and the second arc - shaped plate and rotatably arranged on the inner wall of the grinding bucket, a plurality of fourth through - holes equidistantly and annularly distributed on the switching disk, an extension ring coaxially fixed with the fourth grinding wheel and fixedly arranged thereon, and a push plate slidably arranged at the bottom of the partition plate and fixedly arranged on the extension ring.

[0010] Specifically, the heat dissipation device includes a first one - way valve arranged on the turntable, a second one - way valve arranged on the partition plate, a filter plate located at the upper end of the partition plate and rotatably arranged on the partition plate and the extension ring, a piston slidably arranged in the cylinder body, a support rod fixedly arranged on the turntable, and a cylinder fixedly arranged on the support rod and used to drive the piston to reciprocate.

[0011] Specifically, the driving device includes a first rotating shaft, a second rotating shaft and a third rotating shaft rotatably arranged on the grinding bucket wall, a second gear fixedly sleeved on the first rotating shaft and meshed with the first gear, a third gear coaxially fixed with the turntable and fixedly arranged thereon, a fourth gear fixedly sleeved on the second rotating shaft and meshed with the third gear, a fifth gear fixedly sleeved on the first rotating shaft, a sixth gear fixedly sleeved on the second rotating shaft and meshed with the fifth gear, a motor fixedly arranged on the grinding bucket and used to drive the first rotating shaft to rotate, a seventh gear fixedly sleeved on the switching disk, an eighth gear fixedly sleeved on the third rotating shaft and meshed with the seventh gear, a first pulley fixedly sleeved on the first rotating shaft, a second pulley fixedly sleeved on the third rotating shaft, and a transmission belt wound around the first pulley and the second pulley.

[0012] The beneficial effects of the present invention are:

[0013] It can grind materials finely, directly act on the grinding materials by means of air cooling, has good cooling effect and can improve the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings forming a part of this application are used to provide a further understanding of this application, making other features, purposes and advantages of this application more obvious. The schematic embodiments and their descriptions of this application are used to explain this application and do not constitute an improper limitation of this application.

[0015] In addition, throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic and the elements and components are not necessarily drawn to scale.

[0016] In the drawings:

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is a side schematic diagram of the present invention;

[0019] Figure 3 is Figure 2 a cross-sectional view taken along line A-A in

[0020] Figure 4 is Figure 3 an enlarged view of part A in

[0021] Figure 5 is Figure 3 a partial structural cross-sectional view taken along line B-B in

[0022] Figure 6 is Figure 3 a cross-sectional view taken along line C-C in

[0023] Figure 7 is Figure 3 a cross-sectional view taken along line D-D in

[0024] Figure 8 is Figure 3 a cross-sectional view taken along line E-E in

[0025] Figure 9 is Figure 3 a cross-sectional view taken along line F-F in

[0026] The descriptions of the reference numerals are as follows:

[0027] 1. Grinding barrel; 2. Grinding device; 21. First gear; 22. First grinding wheel; 23. Turntable; 24. Cylinder block; 25. Second grinding wheel; 26. Third grinding wheel; 27. Fourth grinding wheel; 28. First through hole; 29. Second through hole; 210. Third through hole; 220. Taper block; 230. Substrate; 240. Connecting rod; 250. First conical grinding surface; 2501. First deflector; 260. Second conical grinding surface; 270. Third conical grinding surface; 280. Fourth conical grinding surface; 2801. Second deflector; 3. Driving device; 31. First rotating shaft; 32. Second rotating shaft; 33. Third rotating shaft; 34. Second gear; 35. Third gear; 36. Fourth gear; 37. Fifth gear; 38. Sixth gear; 39. Motor; 310. Seventh gear; 320. Eighth gear; 330. First pulley; 340. Second pulley; 350. Transmission belt; 4. Support frame; 5. Material storage device; 51. Material barrel; 52. Barrel cover; 53. Feeding pipe; 6. Discharging device; 61. Partition board; 62. Discharge pipe; 63. First arc plate; 64. Second arc plate; 65. Switching disc; 66. Fourth through hole; 67. Extension ring; 68. Pushing plate; 7. Heat dissipation device; 71. First check valve; 72. Second check valve; 73. Filter plate; 74. Piston; 75. Support rod; 76. Cylinder. Detailed implementation manners

[0028] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0029] In addition, it should be noted that only parts related to the relevant invention are shown in the drawings for the convenience of description. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0030] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependent relationships.

[0031] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly stated in the context, it should be understood as "one or more".

[0032] The present disclosure will be described in detail below with reference to the drawings and in combination with embodiments.

[0033] Refer to Figures 1-9 As shown, a fine grinder according to the present invention includes a grinding barrel 1, a grinding device 2 disposed inside the grinding barrel 1, a driving device 3 disposed on the grinding barrel 1 and used to drive the grinding device 2 to operate, two support frames 4 symmetrically fixed on the grinding barrel 1, a material storage device 5 located above the middle of the grinding barrel 1 and fixed on the two support frames 4, a discharging device 6 located inside the grinding barrel 1 and below the grinding device 2, and a heat dissipation device 7 for cooling the grinding device 2;

[0034] The grinding device 2 includes a first gear 21 coaxially arranged with the grinding barrel 1 and rotatably disposed therein, a first grinding wheel 22 coaxially arranged with the first gear 21 and fixed thereon, a turntable 23 rotatably disposed at the upper end of the grinding barrel 1, a cylinder block 24 fixed on the turntable 23, a second grinding wheel 25 fixed at the bottom of the cylinder block 24 and arranged in cooperation with the first grinding wheel 22, a third grinding wheel 26 symmetrically arranged with the first grinding wheel 22 and fixed on the first gear 21, a fourth grinding wheel 27 arranged below the third grinding wheel 26 and in cooperation with it, a first through hole 28 disposed at the center of the first grinding wheel 22, a second through hole 29 coinciding with the first through hole 28 and disposed at the center of the second grinding wheel 25, a third through hole 210 coinciding with the first through hole 28 and disposed on the third grinding wheel 26, a cone block 220 located inside the third through hole 210 and fixed at the center of the fourth grinding wheel 27, a substrate 230 fixed inside the second through hole 29, a connecting rod 240 with two ends respectively fixed at the centers of the cone block 220 and the substrate 230, a first conical grinding surface 250 disposed on the first grinding wheel 22, a second conical grinding surface 260 disposed on the second grinding wheel 25, a third conical grinding surface 270 disposed on the third grinding wheel 26, and a fourth conical grinding surface 280 disposed on the fourth grinding wheel 27;

[0035] First, the coating raw materials are put into the storage device 5. The raw materials enter the grinding barrel 1, and the grinding device 2 in the grinding barrel 1 performs fine grinding on the raw materials. The heat dissipation device 7 performs air cooling on the raw materials during the grinding process and directly acts on the raw materials to improve the cooling effect. The discharged materials are discharged through the discharging device 6; the raw materials fall between the cylinder block 24 and the grinding barrel 1, that is, at the outer edge of the second grinding wheel 25. The driving device 3 drives the first grinding wheel 22 and the third grinding wheel 26 to rotate synchronously and in the same direction, and at the same time drives the second grinding wheel 25 to rotate relative to the first grinding wheel 22. Through the relative rotation of the first grinding wheel 22 and the second grinding wheel 25, the grinding efficiency is improved, and the grinding is more delicate within the same time. The raw materials move from the outer edges of the first grinding wheel 22 and the second grinding wheel 25 towards the centers of the two, that is, grinding while moving. The movement of the raw materials can be realized through the settings of the first conical grinding surface 250 and the second conical grinding surface 260, and the grinding area is increased, so that the grinding is more delicate and fast. Then, the third grinding wheel 26 and the fourth grinding wheel 27 grind the raw materials again to further improve the fineness of grinding. Through the settings of the third conical grinding surface 270 and the fourth conical grinding surface 280, the raw materials can move from the centers of the two towards the outer edges. Through the above overall settings, the grinding area is increased, the grinding is more delicate, and at the same time the grinding efficiency is fast. Through the settings of the first through hole 28 and the third through hole 210, the raw materials ground by the first grinding wheel 22 and the second grinding wheel 25 can enter between the third grinding wheel 26 and the fourth grinding wheel 27 and be ground again. The set cone block 220 plays a guiding role; through the settings of the connecting rod 240 and the substrate 230, the rotation of the second grinding wheel 25 drives the cone block 220 to rotate. The cone block 220 is fixed on the fourth grinding wheel 27, so that the fourth grinding wheel 27 rotates, and thus the second grinding wheel 25 and the fourth grinding wheel 27 rotate synchronously and in the same direction.

[0036] Specifically, the distance from the first conical grinding surface 250 to the second conical grinding surface 260 is set to gradually increase from the center of the first grinding wheel 22 outwards, and the distance from the third conical grinding surface 270 to the fourth conical grinding surface 280 is set to gradually decrease from the center of the third grinding wheel 26 outwards; through the above settings, the raw materials are gradually ground, the raw material particles are gradually reduced, the grinding efficiency can be improved, and the wear of the first grinding wheel 22 and the second grinding wheel 25, as well as the wear of the third grinding wheel 26 and the fourth grinding wheel 27, can be reduced.

[0037] Specifically, a plurality of first flow guiding plates 2501 are equidistantly and annularly distributed on the first conical grinding surface 250, and a gap is left between the plurality of first flow guiding plates 2501 and the second conical grinding surface 260; a plurality of second flow guiding plates 2801 are equidistantly and annularly distributed on the fourth conical grinding surface 280, and a gap is left between the plurality of second flow guiding plates 2801 and the third conical grinding surface 270; the arrangement of the plurality of first flow guiding plates 2501 can accelerate the movement of the raw materials. Similarly, the arrangement of the plurality of second flow guiding plates 2801 can accelerate the movement of the raw materials and improve the grinding efficiency.

[0038] Specifically, the material storage device 5 includes a material barrel 51 fixedly arranged on two support frames 4, a barrel cover 52 flip - arranged at the upper end of the material barrel 51, and a feeding pipe 53 with one end fixedly inserted through the turntable 23 and the other end rotatably arranged at the bottom of the material barrel 51; open the barrel cover 52, put the raw materials to be ground into the material barrel 51, close the barrel cover 52 after completion. The raw materials move downward through the feeding pipe 53 and enter between the cylinder block 24 and the grinding barrel 1. The driving device 3 also drives the turntable 23 to rotate, and the rotation of the turntable 23 drives the feeding pipe 53 to rotate, so that the raw materials entering between the cylinder block 24 and the grinding barrel 1 can be evenly distributed therein, facilitating the subsequent grinding work.

[0039] Specifically, the discharging device 6 includes a partition plate 61 located below the fourth grinding wheel 27 and fixedly arranged in the grinding barrel 1, a discharging pipe 62 fixedly arranged on the partition plate 61, a first arc - shaped plate 63 fixedly sleeved on the discharging pipe 62 and fixedly arranged on the inner wall of the grinding barrel 1, a second arc - shaped plate 64 located below the first arc - shaped plate 63 and fixedly arranged on the inner wall of the grinding barrel 1, a switching disk 65 located between the first arc - shaped plate 63 and the second arc - shaped plate 64 and rotatably arranged on the inner wall of the grinding barrel 1, a plurality of fourth through - holes 66 equidistantly and annularly distributed on the switching disk 65, an extension ring 67 coaxially and fixedly arranged with the fourth grinding wheel 27, and a push plate 68 slidably arranged at the bottom of the partition plate 61 and fixedly arranged on the extension ring 67; the ground material falls on the partition plate 61. The rotation of the fourth grinding wheel 27 drives the extension ring 67 to rotate, causing the push rod to rotate together, pushing the ground material on the partition plate 61 and pushing it into the discharging pipe 62. When the discharging pipe 62 coincides with one of the fourth through - holes 66, the raw materials in the discharging pipe 62 enter the fourth through - holes 66. The driving device 3 also drives the switching disk 65 to rotate, and the rotation of the switching disk 65 synchronously rotates the fourth through - holes 66, moving the fourth through - holes 66 filled with raw materials out of the first arc - shaped plate 63 and the second arc - shaped plate 64, and then falling by its own gravity to complete the discharging work of the ground material. The first arc - shaped plate 63 and the second arc - shaped plate 64 seal both ends of the fourth through - holes 66 moving into them.

[0040] Specifically, the heat dissipation device 7 includes a first one-way valve 71 disposed on the turntable 23, a second one-way valve 72 disposed on the partition plate 61, a filter plate 73 located at the upper end of the partition plate 61 and rotatably disposed on the partition plate 61 and the extension ring 67, a piston 74 slidably disposed in the cylinder block 24, a support rod 75 fixedly disposed on the turntable 23, and a cylinder 76 fixedly disposed on the support rod 75 and used to drive the piston 74 to reciprocate; when the cylinder 76 is started, the cylinder 76 drives the piston 74 to reciprocate. When the piston 74 moves upward, the first one-way valve 71 opens, and at this time the second one-way valve 72 closes. Through the setting of the second through hole 29, the external air enters between the cylinder block 24 and the grinding barrel 1 from the first one-way valve 71, and then enters the cylinder block 24 between the first grinding wheel 22 and the second grinding wheel 25. Since the discharge pipe 62 is sealed during the discharging process and the second one-way valve 72 is closed, the external air flowing into the cylinder block 24 can cool the movement of the raw material while grinding when the air flows between the first grinding wheel 22 and the second grinding wheel 25; when the piston 74 moves downward, the first one-way valve 71 closes and the second one-way valve 72 opens. Due to the setting of the barrel cover 52, the air in the cylinder block 24 enters between the third grinding wheel 26 and the fourth grinding wheel 27, and finally is discharged from the grinding barrel 1 through the second one-way valve 72. The filter plate 73 is provided to prevent the ground raw material from being discharged through the second one-way valve 72; through the above setting, when the piston 74 reciprocates in the cylinder block 24, the external air continuously enters the grinding barrel 1 and then flows out of it. During this process, the first grinding wheel 22, the second grinding wheel 25, the third grinding wheel 26, and the fourth grinding wheel 27 are air-cooled, and at the same time, the raw material during the grinding process is cooled, and the movement of the raw material is accelerated. The overall cooling effect is good, the grinding efficiency is fast, and the grinding is more delicate.

[0041] Specifically, the driving device 3 includes a first rotating shaft 31, a second rotating shaft 32, and a third rotating shaft 33 rotatably provided on the wall of the grinding barrel 1, a second gear 34 fixedly sleeved on the first rotating shaft 31 and meshed with the first gear 21, a third gear 35 coaxially fixed to the turntable 23, a fourth gear 36 fixedly sleeved on the second rotating shaft 32 and meshed with the third gear 35, a fifth gear 37 fixedly sleeved on the first rotating shaft 31, a sixth gear 38 fixedly sleeved on the second rotating shaft 32 and meshed with the fifth gear 37, a motor 39 fixedly provided on the grinding barrel 1 and used to drive the first rotating shaft 31 to rotate, a seventh gear 310 fixedly sleeved on the switching disk 65, an eighth gear 320 fixedly sleeved on the third rotating shaft 33 and meshed with the seventh gear 310, a first pulley 330 fixedly sleeved on the first rotating shaft 31, a second pulley 340 fixedly sleeved on the third rotating shaft 33, and a transmission belt 350 wound around the first pulley 330 and the second pulley 340; the above-mentioned motor 39 can be obtained by purchasing in the market. Starting the motor 39, the motor 39 drives the first rotating shaft 31 to rotate, the first rotating shaft 31 drives the second gear 34 and the fifth gear 37 to rotate, the second gear 34 drives the first gear 21 to rotate, so that the first grinding wheel 22 and the third grinding wheel 26 rotate, the fifth gear 37 drives the sixth gear 38 to rotate, the sixth gear 38 drives the second rotating shaft 32 to rotate, the second rotating shaft 32 drives the fourth gear 36 to rotate, the fourth gear 36 drives the third gear 35 to rotate, the third gear 35 drives the turntable 23 to rotate, the turntable 23 drives the cylinder block 24 to rotate, thereby driving the second grinding wheel 25 to rotate, the fifth gear 37 and the sixth gear 38 rotate relative to each other, so that the first grinding wheel 22 and the second grinding wheel 25 rotate relative to each other, the first rotating shaft 31 also drives the first pulley 330 to rotate, so that the transmission belt 350 runs, so that the second pulley 340 rotates, the rotation of the second pulley 340 drives the third rotating shaft 33 to rotate, the third rotating shaft 33 drives the eighth gear 320 to rotate, the eighth gear 320 drives the seventh gear 310 to rotate, and the seventh gear 310 drives the switching disk 65 to rotate.

[0042] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A fine grinding machine, characterized in that: The invention comprises a grinding barrel (1), a grinding device (2) arranged in the grinding barrel (1), a driving device (3) arranged on the grinding barrel (1) and used for driving the grinding device (2) to operate, two supporting frames (4) symmetrically fixed on the grinding barrel (1), a material storage device (5) located in the upper middle of the grinding barrel (1) and fixed on the two supporting frames (4), a material discharge device (6) located in the grinding barrel (1) and arranged below the grinding device (2), and a heat dissipation device (7) used for cooling the grinding device (2); The grinding device (2) comprises a first gear (21) coaxial with the grinding barrel (1) and rotatably arranged therein, a first grinding wheel (22) coaxial with the first gear (21) and fixedly arranged thereon, a turntable (23) rotatably arranged at the upper end of the grinding barrel (1), a cylinder (24) fixedly arranged on the turntable (23), a second grinding wheel (25) fixedly arranged at the bottom of the cylinder (24) and arranged in cooperation with the first grinding wheel (22), a third grinding wheel (26) symmetrically arranged with the first grinding wheel (22) and fixedly arranged on the first gear (21), a fourth grinding wheel (27) arranged below the third grinding wheel (26) and arranged in cooperation with the third grinding wheel (27), a first through hole (28) arranged at the center of the first grinding wheel (22), and a second through hole (28) overlapping with the first through hole (28) and arranged at the bottom of the cylinder (24). A second through hole (29) at the center of the second grinding wheel (25), a third through hole (210) overlapping with the first through hole (28) and arranged on the third grinding wheel (26), a cone block (220) located in the third through hole (210) and fixedly arranged at the center of the fourth grinding wheel (27), a base plate (230) fixedly arranged in the second through hole (29), a connecting rod (240) with two ends respectively fixedly arranged at the center of the cone block (220) and the base plate (230), a first conical grinding surface (250) arranged on the first grinding wheel (22), a second conical grinding surface (260) arranged on the second grinding wheel (25), a third conical grinding surface (270) arranged on the third grinding wheel (26), and a fourth conical grinding surface (280) arranged on the fourth grinding wheel (27).

2. A fine grinding machine according to claim 1, characterized in that: The distance from the first conical grinding surface (250) to the second conical grinding surface (260) is gradually increased from the center of the first grinding wheel (22) toward the outside, and the distance from the third conical grinding surface (270) to the fourth conical grinding surface (280) is gradually decreased from the center of the third grinding wheel (26) toward the outside.

3. A fine grinding machine according to claim 1, characterized in that: A plurality of first guide plates (2501) are equidistantly distributed in an annular shape on the first conical grinding surface (250), and gaps are left between the plurality of first guide plates (2501) and the second conical grinding surface (260); a plurality of second guide plates (2801) are equidistantly distributed in an annular shape on the fourth conical grinding surface (280), and gaps are left between the plurality of second guide plates (2801) and the third conical grinding surface (270).

4. A fine grinding machine according to claim 1, characterized in that: The material storage device (5) comprises a material barrel (51) fixedly mounted on two support frames (4), a barrel cover (52) flipped over and mounted on the upper end of the material barrel (51), and a material delivery pipe (53) having one end penetrating and fixedly inserted into the turntable (23) and the other end rotatably mounted on the bottom of the material barrel (51).

5. A fine grinding machine according to claim 1, characterized in that: The discharge device (6) comprises a partition (61) located below the fourth grinding wheel (27) and fixedly arranged in the grinding barrel (1), a discharge pipe (62) fixedly arranged on the partition (61), a first arc plate (63) fixedly sleeved on the discharge pipe (62) and fixedly arranged on the inner wall of the grinding barrel (1), a second arc plate (64) located below the first arc plate (63) and fixedly arranged on the inner wall of the grinding barrel (1), a switching disk (65) located between the first arc plate (63) and the second arc plate (64) and rotatably arranged on the inner wall of the grinding barrel (1), a plurality of fourth through holes (66) equidistantly annularly arranged on the switching disk (65), an extension ring (67) coaxial with the fourth grinding wheel (27) and fixedly arranged thereon, and a push plate (68) slidably arranged at the bottom of the partition (61) and fixedly arranged on the extension ring (67).

6. A fine grinding machine according to claim 5, characterized in that: The heat dissipation device (7) comprises a first one-way valve (71) arranged on the rotating disk (23), a second one-way valve (72) arranged on the partition (61), a filter plate (73) located at the upper end of the partition (61) and rotatably arranged on the partition (61) and the extension ring (67), a piston (74) slidably arranged in the cylinder body (24), a support rod (75) fixedly arranged on the rotating disk (23), and a cylinder (76) fixedly arranged on the support rod (75) and used for reciprocating movement with the driving piston (74).

7. A fine grinding machine according to claim 5, characterized in that: The driving device (3) comprises a first rotating shaft (31), a second rotating shaft (32) and a third rotating shaft (33) rotatably arranged on the wall of the grinding barrel (1), a second gear (34) fixedly sleeved on the first rotating shaft (31) and meshed with the first gear (21), a third gear (35) coaxial with the rotating disk (23) and fixed thereon, a fourth gear (36) fixedly sleeved on the second rotating shaft (32) and meshed with the third gear (35), a fifth gear (37) fixedly sleeved on the first rotating shaft (31), a second gear (34) fixedly sleeved on the second rotating shaft (32) and meshed with the fifth gear (35), and a third gear (35) fixedly sleeved on the second rotating shaft (32) and meshed with the third gear (35). 7) a sixth gear (38) meshed with the first rotating shaft (31), a motor (39) fixedly mounted on the grinding barrel (1) and used to drive the first rotating shaft (31) to rotate, a seventh gear (310) fixedly mounted on the switching disk (65), an eighth gear (320) fixedly mounted on the third rotating shaft (33) and meshed with the seventh gear (310), a first belt pulley (330) fixedly mounted on the first rotating shaft (31), a second belt pulley (340) fixedly mounted on the third rotating shaft (33), and a transmission belt (350) wound around the first belt pulley (330) and the second belt pulley (340).

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