Flour mill for coating production

Abstract

The utility model discloses a flour mill for coating production, which relates to the technical field of coating production and comprises a base frame, a bottom plate is fixedly mounted between the front side and the rear side of an inner ring of the base frame, first supporting legs are fixedly mounted on the front side and the rear side of the top of the bottom plate, and a flour milling tank is fixedly mounted on the tops of the two first supporting legs. Two second supporting legs are fixedly installed on the left side of the top of the base frame, a feeding mechanism is arranged on the tops of the two second supporting legs, fixing rods are fixedly installed on the lower portions of the left side and the right side of the inner wall of the grinding tank, and a motor protection shell is fixedly installed between the opposite ends of the two fixing rods. According to the utility model, through the mutual cooperation of the coarse mesh plate frame, the coarse mesh plate, the servo motor I, the extrusion cam and the vibration mechanism, crushed coating raw material particles can quickly pass through the coarse mesh plate to fall down and start to be ground, so that the coarse mesh plate is prevented from being blocked, and the grinding efficiency is improved.

Description

A grinding mill for paint production Technical Field

[0001] This utility model relates to the field of coating production technology, specifically to a grinding mill for coating production. Background Technology

[0002] Powder coatings are solvent-free, solid powders. They are made by mixing special resins, pigments, fillers, curing agents, and other additives in specific proportions, followed by processes such as hot extrusion, pulverization, and sieving. Before use, they require heating and baking to melt and cure, forming a smooth, glossy, and permanent coating film for decorative and corrosion-resistant purposes. In practical applications, powder coatings need to be efficiently pulverized using a grinding mill. The existing technology has the following problems:

[0003] Chinese patent document CN221733537U discloses a grinding mill for paint production, including a base plate. A dust collection box is fixedly installed on one side of the top of the base plate, and a dust collection component is fixedly installed on the front of the dust collection box. Baffles are symmetrically fixed at both ends of the front of the dust collection box, and a collection bucket is attached to one side of the base plate. In this grinding mill for paint production, block particles are first crushed by a crushing component. Particles of the appropriate size pass through a coarse-perforated mesh and fall onto a grinding cylinder. After being ground into powder by the grinding cylinder of the grinding component and the fine-perforated mesh, the powder falls into the dust dumping bucket. The dumping valve cone is opened to pour the paint powder into the collection bucket. Thus, the grinding mill achieves fine grinding of block paint through a dual process of crushing and grinding, improving the grinding effect and efficiency of the grinding mill. At the same time, it uses the paint's own gravity for downward grinding, saving energy.

[0004] In the aforementioned literature, the pulverized powder coating particles can only fall through the coarse-pore mesh under their own gravity. If there are many powder coating particles inside, the coarse-pore mesh is easily clogged, resulting in a slower grinding speed as the pulverized powder coating particles fall through the mesh, thus reducing grinding production efficiency. Summary of the Invention

[0005] This utility model provides a grinding mill for coating production to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A grinding mill for paint production includes a base frame. A base plate is fixedly installed between the front and rear sides of the inner ring of the base frame. Support legs one is fixedly installed on the front and rear sides of the top of the base plate. A grinding jar is fixedly installed on the top of the two support legs one. Two support legs two are fixedly installed on the top left side of the base frame. A feeding mechanism is provided on the top of the two support legs two. A viewing glass window is provided on the lower rear side of the grinding jar. Fixing rods are fixedly installed on the lower left and right sides of the inner wall of the grinding jar. A motor protective shell is fixedly installed between the opposite ends of the two fixing rods. A bidirectional motor is fixedly installed in the inner cavity of the motor protective shell. The bottom output shaft of the bidirectional motor passes through to the bottom of the motor protective shell and is fixedly installed with a connecting rod. The bottom left and right sides of the connecting rod are fixedly installed with a connecting rod. Both sides are fixedly equipped with suspended inclined scrapers. The bottom of the grinding tank is fixedly connected to a feeding funnel that penetrates its inner cavity. The bottoms of the two suspended inclined scrapers overlap with the inner ring of the feeding funnel. A fine grinding mesh plate is fixedly installed on the inner ring of the grinding tank. The top output shaft of the bidirectional motor passes through the top of the motor protective shell and through the fine grinding mesh plate. Grinding rollers are overlapped on the top left and right sides of the fine grinding mesh plate. The opposite ends of the two grinding rollers are movably connected to the left and right sides of the top output shaft of the bidirectional motor. A coarse mesh frame is set on the top of the two grinding rollers. A vibration mechanism is set above the coarse mesh frame. The top of the top output shaft of the bidirectional motor passes through the top of the vibration mechanism, and several crushing blades are fixedly installed in a ring array on the outer wall.

[0008] A further improvement of this utility model is that: the outer wall of the coarse-hole mesh frame is fixedly connected to the inner wall of the grinding tank; a coarse-hole mesh plate is fixedly installed on the inner ring of the coarse-hole mesh frame; a through hole is opened at the center of the coarse-hole mesh plate; a sliding ring is fixedly installed on the inner ring of the through hole; the top output shaft of the bidirectional motor passes through the inner ring of the sliding ring to the top of the coarse-hole mesh plate; a servo motor is fixedly installed on the right side of the grinding tank; the output shaft of the servo motor passes through the inner cavity of the grinding tank and a pressing cam is fixedly installed thereon; the outer wall of the pressing cam overlaps with the bottom right side of the coarse-hole mesh frame.

[0009] A further improvement of this utility model is that: the vibration mechanism includes a material guiding and fixing inclined ring, the outer wall of which is fixedly connected to the inner ring of the grinding tank, a connecting ring is fixedly installed at the bottom of the material guiding and fixing inclined ring, a fixing ring is fixedly installed on the outer wall of the connecting ring, a plurality of springs are fixedly installed in a circular array at the bottom of the fixing ring, the bottom of each of the springs is fixedly connected to the top of the coarse-hole mesh frame, an elastic connecting band is fixedly installed at the bottom of the connecting ring, the bottom of the elastic connecting band is fixedly connected to the top of the coarse-hole mesh frame, and the elastic connecting band is located on the side of the springs away from the inner ring of the grinding tank.

[0010] A further improvement of this utility model is that: the bottom of the feeding funnel is fixedly connected to a discharge conveying pipe that passes through its inner cavity; a servo motor 2 is fixedly installed on the right side of the discharge conveying pipe; the output shaft of the servo motor 2 passes through the inner cavity of the discharge conveying pipe and is fixedly installed with a screw rod 1; an L-shaped feeding pipe is fixedly connected to the left end of the screw rod 1; a fixing plate is fixedly installed between the front and rear sides of the inner ring of the base frame; the fixing plate is located on the left side of the base plate; and a collection box is provided on the top of the fixing plate.

[0011] A further improvement of this utility model is that: the feeding mechanism includes a feeding hood, which is fixedly installed on the top of the grinding tank and communicates with the inner cavity of the grinding tank; a feeding inclined tube that communicates with the inner cavity of the feeding hood is fixedly installed on the left side of the feeding hood; a servo motor is fixedly installed at the top of the feeding inclined tube; the output shaft of the servo motor passes through the inner cavity of the feeding inclined tube and a feeding screw is fixedly installed thereon; the outer wall of the feeding screw overlaps with the inner wall of the feeding inclined tube; a discharge box is fixedly installed at the bottom of the feeding inclined tube; the tops of the two support legs are fixedly connected to the bottom of the discharge box; and the bottom end of the feeding screw extends into the inner cavity of the discharge box.

[0012] A further improvement of this utility model is that: a lifting handle is fixedly installed on both the front and rear sides of the collection box; a telescopic tube penetrating its inner cavity is fixedly connected to the top of the collection box; a fixed docking ring is fixedly installed at the top of the telescopic tube; an internal threaded mounting ring is movably installed at the top of the fixed docking ring; a threaded wall is opened on the outer wall at the vertical part of the L-shaped feeding pipe; and the internal threaded mounting ring is threadedly connected to the threaded wall.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] 1. This utility model provides a grinding mill for paint production. Through the cooperation of a coarse-hole mesh frame, a coarse-hole mesh plate, a servo motor, an extrusion cam, and a vibration mechanism, the crushed paint raw material particles can quickly fall through the coarse-hole mesh plate and begin grinding, avoiding clogging of the coarse-hole mesh plate and improving grinding efficiency.

[0015] 2. This utility model provides a grinding mill for paint production. Through the cooperation between the discharge conveying pipe, the second servo motor, the first screw, the L-shaped feeding pipe, and the collection box, the grinding paint raw material powder can be effectively prevented from clogging during the discharge process, improving the discharge efficiency, while not affecting the dust-free collection work. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is a cross-sectional schematic diagram of the grinding tank of this utility model;

[0018] Figure 3 is a schematic diagram of the vibration mechanism of this utility model;

[0019] Figure 4 is a schematic diagram of the feeding mechanism of this utility model;

[0020] Figure 5 is a schematic diagram of the collection box structure of this utility model.

[0021] In the diagram: 1. Base frame; 11. Support leg one; 12. Support leg two; 13. Fixing plate; 14. Collection box; 141. Lifting handle; 142. Telescopic tube; 143. Fixing docking ring; 144. Internal thread mounting ring; 2. Grinding tank; 21. Fixing rod; 211. Motor protective shell; 212. Bidirectional motor; 213. Connecting rod; 214. Suspended inclined scraper; 22. Visual glass window; 23. Discharge funnel; 231. Discharge conveying pipe; 232. Servo motor two; 233. Screw rod one; 23 4. L-shaped feeding pipe; 2341. Threaded wall; 24. Grinding fine hole mesh plate; 241. Grinding roller; 25. Coarse hole mesh plate frame; 251. Coarse hole mesh plate; 252. Servo motor one; 253. Extrusion cam; 26. Vibration mechanism; 261. Guide fixing inclined ring; 262. Connecting ring; 263. Fixing ring; 264. Spring; 265. Elastic connecting belt; 27. Crushing blade; 3. Feeding mechanism; 31. Feeding hood; 32. Feeding inclined tube; 33. Servo motor three; 34. Feeding screw rod; 35. Discharge box. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] As shown in Figures 1, 2, and 3, this utility model provides a grinding mill for paint production, including a base frame 1. A base plate is fixedly installed between the front and rear sides of the inner ring of the base frame 1. Support legs 11 are fixedly installed on the front and rear sides of the top of the base plate. A grinding tank 2 is fixedly installed on the top of the two support legs 11. Two support legs 22 are fixedly installed on the top left side of the base frame 1. A feeding mechanism 3 is provided on the top of the two support legs 22. A visual glass window 22 is provided on the lower rear side of the grinding tank 2 for easy observation of the grinding powder. Fixing rods 21 are fixedly installed on the lower left and right sides of the inner wall of the grinding tank 2. A motor protective shell 211 is fixedly installed between the opposite ends of the two fixing rods 21. The inner cavity of the motor protective shell 211 is fixedly installed with... The grinding tank 2 is equipped with a bidirectional motor 212. The bottom output shaft of the bidirectional motor 212 passes through the bottom of the motor protective housing 211 and is fixedly installed with a connecting rod 213. Suspended inclined scrapers 214 are fixedly installed on both the left and right sides of the bottom of the connecting rod 213. A feeding funnel 23 that penetrates the inner cavity of the grinding tank 2 is fixedly connected to the bottom. The bottoms of the two suspended inclined scrapers 214 overlap with the inner ring of the feeding funnel 23. A fine grinding mesh plate 24 is fixedly installed on the inner ring of the grinding tank 2. The top output shaft of the bidirectional motor 212 passes through the top of the motor protective housing 211 and through the fine grinding mesh plate 24. Grinding rollers 241 are overlapped on both the left and right sides of the top of the fine grinding mesh plate 24. The opposite ends of the two grinding rollers 241 are respectively connected to the top output shaft of the bidirectional motor 212. The left and right sides are movably connected. A coarse-perforated mesh frame 25 is provided at the top of the two grinding rollers 241. A vibration mechanism 26 is provided above the coarse-perforated mesh frame 25. The top output shaft of the bidirectional motor 212 extends through to the top of the vibration mechanism 26, and several crushing blades 27 are fixedly installed in a ring array on its outer wall. The outer wall of the coarse-perforated mesh frame 25 is fixedly connected to the inner wall of the grinding tank 2. A coarse-perforated mesh plate 251 is fixedly installed on the inner ring of the coarse-perforated mesh frame 25. A through hole is opened at the center of the coarse-perforated mesh plate 251, and a sliding ring is fixedly installed on the inner ring of the through hole. The top output shaft of the bidirectional motor 212 extends through the inner ring of the sliding ring to the top of the coarse-perforated mesh plate 251. A servo motor 252 is fixedly installed on the right side of the grinding tank 2. The output shaft extends into the inner cavity of the grinding tank 2 and is fixedly mounted with a pressing cam 253. The outer wall of the pressing cam 253 overlaps with the bottom right side of the coarse-perforated mesh frame 25. The vibration mechanism 26 includes a guide fixing inclined ring 261. The outer wall of the guide fixing inclined ring 261 is fixedly connected to the inner ring of the grinding tank 2. A connecting ring 262 is fixedly mounted at the bottom of the guide fixing inclined ring 261. A fixing ring 263 is fixedly mounted on the outer wall of the connecting ring 262. Several springs 264 are fixedly mounted in a circular array at the bottom of the fixing ring 263. The bottoms of the springs 264 are all fixedly connected to the top of the coarse-perforated mesh frame 25. An elastic connecting band 265 is fixedly mounted at the bottom of the connecting ring 262. The bottom of the elastic connecting band 265 is fixedly connected to the top of the coarse-perforated mesh frame 25.Furthermore, the elastic connecting band 265 is located on the side of several springs 264 away from the inner ring of the grinding tank 2;

[0024] After the paint raw material particles enter the grinding tank 2, the bidirectional motor 212 inside the motor protective shell 211 drives the upper and lower output shafts to rotate. The top output shaft drives the crushing blades 27 to rotate, crushing the paint raw material. After being guided by the guide fixing inclined ring 261, the material is concentrated and falls onto the top of the coarse-perforated mesh plate 251 through the connecting ring 262. At the same time, the elastic connecting band 265 connecting the bottom of the connecting ring 262 and the coarse-perforated mesh plate frame 25 ensures that all the paint raw material is concentrated on the top of the coarse-perforated mesh plate 251 without hindering the up-and-down vibration of the coarse-perforated mesh plate frame 251. After the crushed paint raw material falls onto the coarse-perforated mesh plate 251, the servo motor 252 drives the extrusion cam 253 to rotate. The protrusion on the outer wall of the extrusion cam 253 can lift the coarse-perforated mesh plate frame 25 upward and compress the spring 264. When the protrusion... When the coarse-perforated mesh frame 25 is moved away from the spring 264, the coarse-perforated mesh frame 25 will descend under the rebound action of the spring 264. Repeating this process will cause the coarse-perforated mesh frame 25 to vibrate up and down, so that the crushed paint raw material particles can fall more quickly. After falling, they will fall directly onto the fine-perforated grinding mesh plate 24. Then, the top output shaft of the bidirectional motor 212 can synchronously drive the two grinding rollers 241 to rotate and rotate and crush on the top of the fine-perforated grinding mesh plate 24, thereby grinding the paint raw material particles and making the paint raw material particles fall in powder form. The top of the motor protective shell 211 is designed with a conical shape to prevent the paint raw material powder from accumulating. The grinding powder can be concentrated and fall using the feeding funnel 23. The bottom output shaft of the bidirectional motor 212 can drive the connecting rod 213 and the suspended inclined scraper 214 to rotate, scraping the inner wall of the feeding funnel 23 to prevent powder accumulation.

[0025] As shown in Figure 4, a discharge conveying pipe 231 is fixedly connected to the bottom of the discharge funnel 23, penetrating its inner cavity. A servo motor 232 is fixedly installed on the right side of the discharge conveying pipe 231. The output shaft of the servo motor 232 passes through the inner cavity of the discharge conveying pipe 231 and is fixedly installed with a screw rod 233. An L-shaped discharge pipe 234 is fixedly connected to the left end of the screw rod 233. A fixing plate 13 is fixedly installed between the front and rear sides of the inner ring of the base frame 1. The fixing plate 13 is located on the left side of the base plate. A collection box 14 is provided on the top of the fixing plate 13. The feeding mechanism 3 includes a feeding hood 31. A feeding duct 32 is fixedly installed on the top of the grinding tank 2 and communicates with the inner cavity of the grinding tank 2. A feeding duct 32 is fixedly installed on the left side of the feeding duct 31 and communicates with its inner cavity. A servo motor 33 is fixedly installed at the top of the feeding duct 32. The output shaft of the servo motor 33 passes through the inner cavity of the feeding duct 32 and a feeding screw 34 is fixedly installed. The outer wall of the feeding screw 34 overlaps with the inner wall of the feeding duct 32. A discharge box 35 is fixedly installed at the bottom of the feeding duct 32. The tops of the two support legs 12 are fixedly connected to the bottom of the discharge box 35. The bottom of the feeding screw 34 extends into the inner cavity of the discharge box 35.

[0026] In use, the paint raw material is poured into the inner cavity of the feeding box 35. Then, by starting the servo motor 33, the feeding screw 34 in the inner cavity of the feeding inclined pipe 32 is rotated, thereby transporting the paint raw material in the feeding box 35 upward until it reaches the feeding hood 31. The fixed connection between the feeding hood 31 and the top of the grinding tank 2 allows the paint raw material to enter the inner cavity of the grinding tank 2 to begin grinding. The ground paint raw material powder will enter the inner cavity of the discharge conveying pipe 231. To prevent excessive powder from causing blockage, the servo motor 232 can be started to rotate the screw 233 in the inner cavity of the discharge conveying pipe 231, thereby conveying the paint raw material powder towards the L-shaped discharge pipe 234 for convenient and rapid discharge. When discharging is stopped, the rotation of the screw 233 is stopped. After passing through the L-shaped discharge pipe 234, the powder can fall into the inner cavity of the collection box 14 through the internal threaded mounting ring 144 and the telescopic pipe 142 for collection. The collection box 14 can be made of transparent plastic material for easy observation of the amount entering. When it is almost full, the conveying can be stopped.

[0027] As shown in Figure 5, a lifting handle 141 is fixedly installed on both the front and rear sides of the collection box 14. A telescopic tube 142 that passes through its inner cavity is fixedly connected to the top of the collection box 14. A fixed docking ring 143 is fixedly installed at the top of the telescopic tube 142. An internal threaded mounting ring 144 is movably installed at the top of the fixed docking ring 143. A threaded wall 2341 is opened on the outer wall of the vertical part of the L-shaped discharge tube 234. The internal threaded mounting ring 144 is threadedly connected to the threaded wall 2341.

[0028] Once the inner cavity of the collection box 14 is full of paint powder, the internal threaded mounting ring 144, which is movably installed on the top of the fixed docking ring 143, can be rotated and fixed. The internal threaded mounting ring 144 is disassembled by connecting it with the threaded wall 2341. The internal threaded mounting ring 144 can be pulled down by the telescopic tube 142, and the collection box 14 can be moved away as a whole by using the lifting handle 141. The paint powder collected in its inner cavity is then processed. After processing, the internal threaded mounting ring 144 is re-threaded and tightened to connect it with the threaded wall 2341 for collection again. This process can prevent powder from being lost during transportation.

[0029] The working principle of the grinding mill used for paint production will be explained in detail below.

[0030] As shown in Figures 1-5, during use, the paint material is poured into the inner cavity of the feeding box 35. Then, by starting the servo motor 33, the feeding screw 34 inside the feeding inclined tube 32 rotates, thus transporting the paint material in the feeding box 35 upwards until it reaches the feeding hood 31. The feeding hood 31 is fixedly connected to the top of the grinding tank 2, allowing the paint material to enter the inner cavity of the grinding tank 2. After entering, starting the bidirectional motor 212 inside the motor protective shell 211 rotates the upper and lower output shafts. The top output shaft drives the crushing blades 27 to rotate, crushing the paint material. Guided by the guiding and fixing inclined ring 261, the material is concentrated and falls onto the top of the coarse-perforated mesh plate 251 via the connecting ring 262. Simultaneously, the bottom of the connecting ring 262 connects with the coarse-perforated mesh plate 251. The elastic connecting band 265 connecting the perforated mesh plate frames 25 allows all the paint raw materials to be concentrated on the top of the coarse perforated mesh plate 251, while not hindering the up-and-down vibration of the coarse perforated mesh plate frame 251. After the crushed paint raw materials fall onto the coarse perforated mesh plate 251, the servo motor 252 can be started to drive the extrusion cam 253 to rotate. The protrusion on the outer wall of the extrusion cam 253 can lift the coarse perforated mesh plate frame 25 upward and compress the spring 264. When the protrusion moves away from the coarse perforated mesh plate frame 25, the coarse perforated mesh plate frame 25 can descend under the rebound action of the spring 264. Repeating this process can make the entire coarse perforated mesh plate frame 25 vibrate up and down, so that the crushed paint raw material particles can fall more quickly. After falling, they will directly fall onto the grinding fine perforated mesh plate 24, and then... The top output shaft of the bidirectional motor 212 can synchronously drive the two grinding rollers 241 to rotate, and grind them on the top of the fine mesh plate 24, thereby grinding the paint raw material particles into powder. The top of the motor protective shell 211 is designed with a conical shape to prevent the paint raw material powder from accumulating. The grinding powder can be concentrated and dropped by the feeding funnel 23. The bottom output shaft of the bidirectional motor 212 can drive the connecting rod 213 and the suspended inclined scraper 214 to rotate, scraping the inner wall of the feeding funnel 23 to prevent powder accumulation. Finally, the powder will enter the inner cavity of the discharge conveying pipe 231. In order to prevent the powder from clogging, the servo motor 232 can be started to drive the spiral rod 233 in the inner cavity of the discharge conveying pipe 231 to rotate. The screw rod 233 rotates to convey the paint raw material powder towards the L-shaped feed pipe 234 for convenient and rapid discharge. To stop discharge, the rotation of the screw rod 233 stops. After passing through the L-shaped feed pipe 234, the powder passes through the internal threaded mounting ring 144 and the telescopic pipe 142, falling into the inner cavity of the collection box 14 for collection. The collection box 14 can be made of transparent plastic for easy observation of the amount entering. When it is almost full, the conveying stops, and the internal threaded mounting ring 144, which is movably mounted on the top of the fixing ring 143, is rotated and fixed. Disassembly is completed by the threaded connection between the internal threaded mounting ring 144 and the threaded wall 2341. The telescopic pipe 142 allows the internal threaded mounting ring 144 to be pulled down, and the collection box 14 can be moved away entirely using the lifting handle 141.The paint powder collected in its inner cavity is processed. After processing, the internal threaded mounting ring 144 is re-threaded and tightened to the threaded wall 2341, allowing for collection again. This process prevents powder leakage during transport.

[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A mill for paint production, comprising a base frame (1), characterized in that: A base plate is fixedly installed between the front and rear sides of the inner ring of the base frame (1). Support legs one (11) are fixedly installed on the front and rear sides of the top of the base plate. A grinding tank (2) is fixedly installed on the top of the two support legs one (11). Two support legs two (12) are fixedly installed on the top left side of the base frame (1). A feeding mechanism (3) is provided on the top of the two support legs two (12). A visual glass window (22) is provided on the lower rear side of the grinding tank (2). Fixed rods (21) are fixedly installed on the lower left and right sides of the inner wall of the powder tank (2). A motor protective shell (211) is fixedly installed between the opposite ends of the two fixed rods (21). A bidirectional motor (212) is fixedly installed in the inner cavity of the motor protective shell (211). The bottom output shaft of the bidirectional motor (212) extends through to the bottom of the motor protective shell (211) and is fixedly installed with a connecting rod (213). Suspended inclined scrapers are fixedly installed on both the left and right sides of the bottom of the connecting rod (213). 214), the bottom of the grinding tank (2) is fixedly connected to a feeding funnel (23) that penetrates its inner cavity, the bottoms of the two suspended inclined scrapers (214) overlap with the inner ring of the feeding funnel (23), the inner ring of the grinding tank (2) is fixedly installed with a fine grinding mesh plate (24), the top output shaft of the bidirectional motor (212) passes through the top of the motor protective shell (211) and through the fine grinding mesh plate (24), the top left and right sides of the fine grinding mesh plate (24) overlap. Grinding rollers (241) are provided. The opposite ends of the two grinding rollers (241) are movably connected to the left and right sides of the top output shaft of the bidirectional motor (212). A coarse-hole mesh frame (25) is provided on the top of the two grinding rollers (241). A vibration mechanism (26) is provided above the coarse-hole mesh frame (25). The top end of the top output shaft of the bidirectional motor (212) extends through to the top of the vibration mechanism (26), and several crushing blades (27) are fixedly installed in a ring array on the outer wall.

2. The grinding mill for coating production according to claim 1, characterized in that: The outer wall of the coarse-hole mesh frame (25) is fixedly connected to the inner wall of the grinding tank (2). A coarse-hole mesh plate (251) is fixedly installed on the inner ring of the coarse-hole mesh frame (25). A through hole is opened at the center of the coarse-hole mesh plate (251). A sliding ring is fixedly installed on the inner ring of the through hole. The top output shaft of the bidirectional motor (212) passes through the inner ring of the sliding ring to the top of the coarse-hole mesh plate (251). A servo motor (252) is fixedly installed on the right side of the grinding tank (2). The output shaft of the servo motor (252) passes through the inner cavity of the grinding tank (2) and a pressing cam (253) is fixedly installed. The outer wall of the pressing cam (253) overlaps with the bottom right side of the coarse-hole mesh frame (25).

3. A grinding mill for coating production according to claim 2, characterized in that: The vibration mechanism (26) includes a guide fixing inclined ring (261), the outer wall of which is fixedly connected to the inner ring of the grinding tank (2), a connecting ring (262) is fixedly installed at the bottom of the guide fixing inclined ring (261), a fixing ring (263) is fixedly installed on the outer wall of the connecting ring (262), and a plurality of springs (264) are fixedly installed in a ring array at the bottom of the fixing ring (263). The bottom of the plurality of springs (264) is fixedly connected to the top of the coarse-hole mesh frame (25). An elastic connecting band (265) is fixedly installed at the bottom of the connecting ring (262), and the bottom of the elastic connecting band (265) is fixedly connected to the top of the coarse-hole mesh frame (25). The elastic connecting band (265) is located on the side of the plurality of springs (264) away from the inner ring of the grinding tank (2).

4. A grinding mill for coating production according to claim 1, characterized in that: The bottom of the feeding funnel (23) is fixedly connected to a discharge conveying pipe (231) that passes through its inner cavity. A servo motor (232) is fixedly installed on the right side of the discharge conveying pipe (231). The output shaft of the servo motor (232) passes through the inner cavity of the discharge conveying pipe (231) and is fixedly installed with a screw rod (233). An L-shaped feeding pipe (234) is fixedly connected to the left end of the screw rod (233). A fixing plate (13) is fixedly installed between the front and rear sides of the inner ring of the base frame (1). The fixing plate (13) is located on the left side of the base plate. A collection box (14) is provided on the top of the fixing plate (13).

5. A grinding mill for coating production according to claim 1, characterized in that: The feeding mechanism (3) includes a feeding hood (31), which is fixedly installed on the top of the grinding tank (2) and communicates with the inner cavity of the grinding tank (2). A feeding inclined tube (32) that communicates with the inner cavity of the feeding hood (31) is fixedly installed on the left side. A servo motor (33) is fixedly installed at the top of the feeding inclined tube (32). The output shaft of the servo motor (33) passes through the inner cavity of the feeding inclined tube (32) and is fixedly installed with a feeding screw rod (34). The outer wall of the feeding screw rod (34) overlaps with the inner wall of the feeding inclined tube (32). A discharge box (35) is fixedly installed at the bottom of the feeding inclined tube (32). The tops of the two support legs (12) are fixedly connected to the bottom of the discharge box (35). The bottom end of the feeding screw rod (34) extends into the inner cavity of the discharge box (35).

6. The mill for paint production according to claim 4, characterized in that: The collection box (14) is fixedly equipped with a lifting handle (141) on both the front and rear sides. The top of the collection box (14) is fixedly connected with a telescopic tube (142) that passes through its inner cavity. The top of the telescopic tube (142) is fixedly equipped with a fixed docking ring (143). The top of the fixed docking ring (143) is movably equipped with an internal threaded mounting ring (144). The outer wall of the vertical part of the L-shaped feed tube (234) is provided with a threaded wall (2341). The internal threaded mounting ring (144) is threadedly connected to the threaded wall (2341).

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