A paint mill for producing paint

Abstract

The application belongs to the technical field of paint production, and particularly relates to a paint sand mill for producing paint, which comprises a machine body, a discharge pipe arranged on the outer side of the machine body, a sand mill mechanism arranged above the machine body, a fixing plate arranged on one side of the machine body and a collecting mechanism arranged above the fixing plate. The sand mill mechanism is driven by the lifting column to coincide with the holding hopper, so that the grinding material is left in the holding hopper. Then, the adhering assembly extrudes the grinding material, and the excess paint adheres to the surface of the adhering assembly. Then, the lifting column drives the fan-shaped plate to move downward, so that the grinding material falls from the opening of the holding hopper into the storage cylinder. Then, the adhering assembly is self-cleaned, the adhered paint is separately collected, and the grinding material is cleaned, so that the paint is not excessively adhered, direct cleaning does not cause waste of the paint, the entire cylinder body is conveniently pulled away or opened, and the entire main shaft system does not need to be disassembled.

Description

Technical Field

[0001] This invention belongs to the field of coating production technology, specifically a coating sand mill for producing coatings. Background Technology

[0002] Sand mills are core equipment in the coatings production industry for achieving ultrafine grinding and dispersion of materials, and are widely used in the preparation processes of various coating systems, including water-based coatings, oil-based coatings, and industrial anti-corrosion coatings. In existing technologies, sand mills for coating production mainly consist of a machine body, grinding chamber, stirring and grinding components, feeding and discharging mechanisms, and a power transmission system. They rely on the high-speed collision, shearing, and grinding action of the grinding media and materials to complete the refinement and homogeneous dispersion of coating raw materials. These sand mills can be classified into different types, such as horizontal and vertical, according to the structure of the grinding chamber and the movement of the media. They can adapt to the processing needs of materials with different fineness and viscosity in coating production, and have formed a mature application system in the continuous industrial production of coatings, meeting the grinding process requirements of conventional coating products.

[0003] In existing technologies, the abrasive is usually cleaned by opening the grinding cylinder directly. However, a large amount of coating adhering to the abrasive surface cannot be completely separated, causing the coating to be directly washed away during abrasive cleaning, resulting in waste. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is: a coating sand mill for producing coatings, comprising a machine body and a discharge pipe disposed on the outside of the machine body, and further comprising:

[0005] The grinding mechanism is located on the top of the machine body, the fixing plate is installed on one side of the machine body, and the collecting mechanism is located on the top of the fixing plate;

[0006] The collection mechanism includes a storage cylinder disposed above a fixed plate, an attachment component disposed inside the storage cylinder, and an electric actuator mounted below the attachment component, the other end of which is connected to the interior of the storage cylinder.

[0007] Furthermore, the collection mechanism also includes:

[0008] A drive shaft, which is mounted above the attachment assembly;

[0009] A holding hopper, which is installed on the inner wall of the storage cylinder, is an inverted cone shape and is fixedly installed inside the storage cylinder;

[0010] The fan-shaped plates are evenly arranged inside the storage cylinder and inside the holding hopper. The fan-shaped plates are adapted to the shape of the holding hopper. In use, the lifting column drives the fan-shaped plates to overlap with the surface of the holding hopper.

[0011] A lifting column is installed below the sector plate, and the bottom of the lifting column is connected to the inside of the storage cylinder.

[0012] Furthermore, the grinding mechanism includes:

[0013] A sliding frame, which is mounted on the surface of the machine body;

[0014] The sliding grooves are symmetrically arranged above the sliding frame and are slidably connected to the sliding frame.

[0015] The support leg is mounted above the slide groove.

[0016] Furthermore, the grinding mechanism also includes:

[0017] A grinding cylinder, which is mounted above the support leg;

[0018] A shock-absorbing assembly is mounted on the top of the machine body and positioned below the grinding cylinder;

[0019] A discharge assembly is installed at one end of the grinding cylinder.

[0020] Furthermore, the grinding mechanism also includes:

[0021] The main shaft is installed outside the machine body, and the grinding cylinder is sleeved outside the main shaft. The main shaft is a hollow shaft and its interior is connected to the discharge pipe.

[0022] A dispersing disc, wherein the dispersing disc is evenly disposed outside the main shaft, and the dispersing disc is sleeved on the outside of the main shaft;

[0023] A screen is installed at one end of the main shaft, with the screen set at the open end of the main shaft, so that the ground coating passes through the screen and is conveyed from the inside of the main shaft to the discharge pipe and discharged outward.

[0024] Furthermore, the shock absorption assembly includes:

[0025] The mounting base is installed on the top of the machine body;

[0026] A spring is symmetrically arranged inside the fixed base, and one end of the spring is connected to the interior of the fixed base;

[0027] A central groove, which is installed inside the fixed base.

[0028] Furthermore, the shock absorption assembly also includes:

[0029] A connecting rod is symmetrically arranged on both sides of the central groove. The outside of the connecting rod is rotatably connected to the inside of the central groove, and the other end of the connecting rod is connected to the outside of the spring.

[0030] An arc-shaped plate is installed above the central groove, and the bottom of the arc-shaped plate contacts the top of the connecting rod.

[0031] The sensor is symmetrically arranged on the surface of the arc-shaped plate and installed on the inner circular surface of the arc-shaped plate. The sensor is a pressure sensor that detects the pressure at both ends of the grinding cylinder and determines whether the axis of the grinding cylinder coincides with the straight line of the main shaft.

[0032] Furthermore, the discharge assembly includes:

[0033] A feeding pipe, which is installed at one end of the grinding cylinder;

[0034] An electric switch is installed outside the grinding cylinder. The electric switch drives the L-shaped rod to move up and down, which in turn drives the baffle to move.

[0035] The L-shaped rod is installed below the electric switch and contacts the inner wall of the feed pipe. The L-shaped rod is located below the baffle and can move the baffle away from the discharge port when lifted, so that the abrasive can be discharged.

[0036] A baffle is installed at the other end of the L-shaped rod and is slidably connected to the inner wall of the grinding cylinder.

[0037] Further, the attachment assembly includes:

[0038] A conical block is installed above the electric push rod, and an annular groove is provided on the side of the conical block. The shape of the conical block is adapted to the shape of the holding bucket.

[0039] The cleaning rods are symmetrically arranged on the outside of the conical block. One end of the cleaning rod is connected to the drive shaft. The surface of the cleaning rod has protrusions. The cleaning rods move closer to each other and rotate under the drive shaft to clean the surface of the conical block and the container.

[0040] Furthermore, the attachment assembly also includes:

[0041] A convex ring is located below the conical block. The surface of the convex ring has an opening. When cleaning the conical block, the convex ring moves downward under the action of the telescopic rod, bringing the convex ring closer to the collection tank, making the collection tank sealed, and allowing the paint to enter the collection tank from the opening.

[0042] Collection trough, which is installed inside the storage cylinder;

[0043] A telescopic rod is installed inside the storage cylinder and is located inside the collection trough.

[0044] The disc is positioned above the telescopic rod. The collection trough is sealed. When the telescopic rod moves the disc downwards, the disc forms a suction needle-like shape, drawing the paint into the collection trough.

[0045] The beneficial effects of this invention are as follows:

[0046] 1. This invention features a collection mechanism where a lifting column aligns a fan-shaped plate with a holding hopper, allowing the abrasive to remain inside. An attachment component then compresses the abrasive, causing excess coating to adhere to its surface. The lifting column then moves the fan-shaped plate downwards, causing the abrasive to fall from the holding hopper into a storage cylinder. The attachment component then performs self-cleaning, collecting the adhered coating separately. The abrasive is then cleaned, preventing excessive coating buildup and the resulting waste from direct cleaning.

[0047] 2. This invention features a grinding mechanism where the main shaft rotates, causing the dispersion disc to rotate and bringing the abrasive into contact with the coating material. The ground coating material enters the main shaft through a screen at one end, allowing the main shaft to pull the coating material outwards. A shock-absorbing component supports the bottom of the grinding cylinder, reducing the shaking caused by centrifugal force during grinding and maintaining the stability of the main shaft and the inside of the grinding cylinder. The detachable and adjustable grinding cylinder can be used as an independent component. When it is necessary to replace the grinding disc, check for wear, or clean, the entire cylinder can be easily pulled back or opened without disassembling the entire main shaft system.

[0048] 3. This invention, by setting up an attachment component, allows the conical surface of the conical block to mate with the concave surface of the holding hopper, pressing the abrasive into a corresponding shape. This causes the coating on the abrasive surface to adhere to the conical surface, the holding hopper, and the fan-shaped plate. Subsequently, the lifting column drives the fan-shaped plate to descend, causing the abrasive to fall from the holding hopper into the storage cylinder. Then, the fan-shaped plate is aligned with the holding hopper, and the electric actuator drives the conical block downwards. This causes the cleaning rods to converge on the other side from a close position around the surface of the conical block, concentrating the coating on the surface of the conical block and the holding hopper. At this time, the convex ring at the bottom of the conical block contacts the collection groove, forming a closed space. The telescopic rod drives the disc downwards, drawing the coating into the collection groove for further collection of the coating on the abrasive surface, avoiding waste caused by direct cleaning. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the structure of the present invention;

[0050] Figure 2 This is a rear view of the present invention;

[0051] Figure 3 This is a schematic diagram of the sanding mechanism of the present invention;

[0052] Figure 4 This is a schematic diagram of the collection mechanism of the present invention;

[0053] Figure 5 This is a partial structural schematic diagram of the shock absorption component of the present invention;

[0054] Figure 6 This is a cross-sectional view of the shock-absorbing component of the present invention;

[0055] Figure 7 This is a schematic diagram of the material discharge assembly of the present invention;

[0056] Figure 8 This is a schematic diagram of the attachment component of the present invention.

[0057] In the diagram: 1. Machine body; 2. Grinding mechanism; 201. Grinding cylinder; 202. Dispersion disc; 203. Screen; 204. Shock absorption assembly; 2041. Fixed base; 2042. Spring; 2043. Connecting rod; 2044. Central groove; 2045. Arc plate; 2046. Sensor; 205. Discharge assembly; 2051. Feed pipe; 2052. Electric switch; 2053. L-shaped rod; 2054. Baffle; 206. Sliding frame; 207. Support leg; 208. Slide... 1. Groove; 209. Main shaft; 3. Collection mechanism; 301. Storage cylinder; 302. Attachment component; 3021. Conical block; 3022. Annular groove; 3023. Protruding ring; 3024. Opening; 3025. Cleaning rod; 3026. Protrusion; 3027. Collection trough; 3028. Telescopic rod; 3029. Disc; 303. Drive shaft; 304. Holding hopper; 305. Fan-shaped plate; 306. Lifting column; 307. Electric actuator; 4. Discharge pipe; 5. Fixing plate. Detailed Implementation

[0058] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0059] Example 1, please refer to Figures 1-5 The present invention provides a technical solution: a coating sand mill for producing coatings, as described below.

[0060] Including the machine body 1, and the discharge pipe 4 disposed on the outside of the machine body 1, and also including:

[0061] The grinding mechanism 2 is set above the machine body 1, the fixing plate 5 is installed on one side of the machine body 1, and the collecting mechanism 3 is set above the fixing plate 5;

[0062] During operation, the coating is injected into the sand milling mechanism 2. After sanding, the coating enters the machine body 1 from its interior and finally flows out from the discharge pipe 4. After all processing is completed, the abrasive inside the sand milling mechanism 2 is poured into the collection mechanism 3, so that the collection mechanism 3 can further collect the coating adhering to the abrasive.

[0063] The collection mechanism 3 includes a storage cylinder 301 disposed above the fixed plate 5, an attachment component 302 disposed inside the storage cylinder 301, and an electric push rod 307 installed below the attachment component 302, the other end of the electric push rod 307 being connected to the interior of the storage cylinder 301.

[0064] Collection agency 3 also includes:

[0065] Drive shaft 303 is mounted above attachment assembly 302;

[0066] The holding hopper 304 is installed on the inner wall of the storage cylinder 301. The holding hopper 304 is inverted conical and is fixedly installed inside the storage cylinder 301.

[0067] The sector plate 305 is evenly arranged inside the storage cylinder 301 and inside the holding hopper 304. The sector plate 305 is adapted to the shape of the holding hopper 304. In use, the lifting column 306 drives the sector plate 305 to overlap with the surface of the holding hopper 304.

[0068] The lifting column 306 is installed below the sector plate 305, and the bottom of the lifting column 306 is connected to the inside of the storage cylinder 301.

[0069] When the abrasive is poured into the storage cylinder 301, the electric actuator 307 drives the attachment component 302 to move upward, and the lifting column 306 drives the fan-shaped plate 305 to overlap with the holding hopper 304, so that the abrasive remains in the holding hopper 304. Then, the attachment component 302 squeezes the abrasive, so that the excess coating adheres to the surface of the attachment component 302. Then, the lifting column 306 drives the fan-shaped plate 305 to move downward, so that the abrasive falls from the opening 3024 of the holding hopper 304 into the storage cylinder 301. Then, the attachment component 302 performs self-cleaning, collects the attached coating separately, and then cleans the abrasive to avoid excessive coating adhesion, which would cause waste of coating if directly cleaned.

[0070] The grinding mechanism 2 includes:

[0071] Sliding frame 206 is mounted on the surface of body 1;

[0072] The slide groove 208 is symmetrically arranged above the sliding frame 206, and the slide groove 208 is slidably connected to the sliding frame 206;

[0073] Support leg 207 is installed above slide rail 208.

[0074] The grinding mechanism 2 also includes:

[0075] Grinding cylinder 201 is installed above support leg 207;

[0076] The shock absorption component 204 is installed on the top of the machine body 1 and is located below the grinding cylinder 201;

[0077] The discharge assembly 205 is installed at one end of the grinding cylinder 201.

[0078] The grinding mechanism 2 also includes:

[0079] The main shaft 209 is installed outside the machine body 1, and the grinding cylinder 201 is sleeved on the outside of the main shaft 209. The main shaft 209 is a hollow shaft and its interior is connected to the discharge pipe 4.

[0080] Dispersion disk 202 is evenly distributed on the outside of main shaft 209 and is sleeved on the outside of main shaft 209;

[0081] Screen 203 is installed at one end of main shaft 209. The end of screen 203 is the opening 3024 end of main shaft 209, so that the ground coating passes through screen 203 and is conveyed from the inside of main shaft 209 to discharge pipe 4 and discharged outward.

[0082] Initially, the coating is injected into the grinding cylinder 201, causing the main shaft 209 to rotate, which in turn drives the dispersing disc 202 to rotate, bringing the abrasive into contact with the coating. The ground coating enters the main shaft 209 from the screen 203 at one end of the main shaft 209, allowing the main shaft 209 to pull the coating outward. The shock-absorbing component 204 supports the bottom of the grinding cylinder 201, reducing the shaking caused by centrifugal force during the grinding process and maintaining the stability of the main shaft 209 and the inside of the grinding cylinder 201. After grinding is completed, the coating is discharged, and the abrasive is discharged outward from the discharge component 205 for cleaning. The detachable and adjustable grinding cylinder 201 can be used as an independent component. When it is necessary to replace the grinding disc, check the wear condition, or clean, the entire cylinder can be easily pulled back or opened without disassembling the entire main shaft 209 system.

[0083] Example 2, please refer to Figures 1-8 The present invention provides a technical solution: based on embodiment 1, the shock absorption component 204 includes:

[0084] Mounting base 2041, which is installed on top of the body 1;

[0085] Spring 2042 is symmetrically arranged inside the fixed base 2041, and one end of spring 2042 is connected to the inside of the fixed base 2041;

[0086] The center groove 2044 is installed inside the fixed base 2041.

[0087] The damping component 204 also includes:

[0088] The connecting rod 2043 is symmetrically arranged on both sides of the central groove 2044. The outside of the connecting rod 2043 is rotatably connected to the inside of the central groove 2044, and the other end of the connecting rod 2043 is connected to the outside of the spring 2042.

[0089] Arc plate 2045 is installed above the central groove 2044, and the bottom of arc plate 2045 contacts the top of connecting rod 2043.

[0090] Sensor 2046 is symmetrically arranged on the surface of arc plate 2045. Sensor 2046 is installed on the inner circular surface of arc plate 2045. Sensor 2046 is a pressure sensor that detects the pressure at both ends of grinding cylinder 201 and determines whether the axis of grinding cylinder 201 coincides with the straight line of main shaft 209.

[0091] When in use, the grinding cylinder 201 is connected and sealed to the machine body 1, so that the bottom of the grinding cylinder 201 contacts the arc plate 2045. The connecting rod 2043 is subjected to the pressure of the arc plate 2045 and unfolds downward, so that the end is elastically supported by the spring 2042 to buffer the grinding cylinder 201 and avoid vibration caused by centrifugal force during operation, which would affect the sealing effect.

[0092] The discharge assembly 205 includes:

[0093] Feed pipe 2051 is installed at one end of grinding cylinder 201;

[0094] Electric switch 2052 is installed outside the grinding cylinder 201. Electric switch 2052 drives L-shaped rod 2053 to move up and down, so that L-shaped rod 2053 drives baffle 2054 to move.

[0095] L-shaped rod 2053 is installed below the electric switch 2052. L-shaped rod 2053 is in contact with the inner wall of the feed pipe 2051. L-shaped rod 2053 is located below the baffle 2054. When lifted, it can move the baffle 2054 away from the discharge port, so that the abrasive can be discharged.

[0096] Baffle 2054 is installed at the other end of L-shaped rod 2053 and is slidably connected to the inner wall of grinding cylinder 201.

[0097] After the coating is ground, the electric switch 2052 drives the L-shaped rod 2053 to move upward, causing the baffle 2054 to open and discharge the abrasive inside the grinding cylinder 201 from the feed pipe 2051.

[0098] The attachment component 302 includes:

[0099] A conical block 3021 is installed above the electric push rod 307. An annular groove 3022 is provided on the side of the conical block 3021. The shape of the conical block 3021 is adapted to the shape of the holding bucket 304.

[0100] Cleaning rods 3025 are symmetrically arranged on the outside of the conical block 3021. One end of the cleaning rods 3025 is connected to the drive shaft 303. The surface of the cleaning rods 3025 is provided with protrusions 3026. The cleaning rods 3025 move closer to each other and rotate under the drive of the drive shaft 303 to clean the surface of the conical block 3021 and the container 304.

[0101] The attachment assembly 302 also includes:

[0102] A convex ring 3023 is located below the conical block 3021. An opening 3024 is provided on the surface of the convex ring 3023. When cleaning the conical block 3021, the convex ring 3023 moves downward under the action of the telescopic rod 3028, so that the convex ring 3023 is close to the collection tank 3027, so that the collection tank 3027 is sealed, allowing the paint to enter the collection tank 3027 from the opening 3024.

[0103] Collection tank 3027 is installed inside storage cylinder 301;

[0104] Telescopic rod 3028 is installed inside the storage cylinder 301 and is located inside the collection trough 3027;

[0105] The disc 3029 is positioned above the telescopic rod 3028. The collection tank 3027 is sealed. When the telescopic rod 3028 moves the disc 3029 downward, the disc 3029 forms a suction needle shape, drawing the paint into the collection tank 3027.

[0106] When discharging the abrasive, the feed pipe 2051 is positioned above the storage cylinder 301, allowing the abrasive to directly enter the holding hopper 304. After a certain amount is loaded, the electric actuator 307 moves the conical block 3021 downwards, causing the conical surface of the conical block 3021 to mate with the concave surface of the holding hopper 304, pressing the abrasive into a corresponding shape. This causes the coating on the abrasive surface to adhere to the conical surface, the holding hopper 304, and the fan-shaped plate 305. Subsequently, the lifting column 306 lowers the fan-shaped plate 305, causing the abrasive to fall from the holding hopper 304 into the storage cylinder 301. Then, the fan-shaped plate 305... When the electric actuator 307 moves the conical block 3021 downwards, coinciding with the holding hopper 304, the cleaning rod 3025 moves from a close position around the surface of the conical block 3021 and converges on the other side, concentrating the coating on the surfaces of the conical block 3021 and the holding hopper 304. At this time, the convex ring 3023 at the bottom of the conical block 3021 contacts the collecting groove 3027, forming a closed space. The telescopic rod 3028 moves the disc 3029 downwards, drawing the coating into the collecting groove 3027 for further collection of the coating on the abrasive surface, avoiding waste caused by direct cleaning.

[0107] The specific workflow is as follows:

[0108] During operation, the coating is injected into the sand milling mechanism 2. After sanding, the coating enters the machine body 1 from its interior and finally flows out from the discharge pipe 4. After all processing is completed, the abrasive inside the sand milling mechanism 2 is poured into the collection mechanism 3, so that the collection mechanism 3 can further collect the coating adhering to the abrasive.

[0109] Initially, the coating is injected into the grinding cylinder 201, causing the main shaft 209 to rotate, which in turn drives the dispersing disc 202 to rotate, bringing the abrasive into contact with the coating. The ground coating enters the main shaft 209 from the screen 203 at one end of the main shaft 209, causing the main shaft 209 to pull the coating outward. The shock absorption component 204 supports the bottom of the grinding cylinder 201, reducing the shaking caused by centrifugal force during the grinding process and maintaining the stability of the main shaft 209 and the inside of the grinding cylinder 201. After grinding is completed, the coating is discharged.

[0110] When the abrasive is poured into the storage cylinder 301, the electric actuator 307 drives the attachment component 302 to move upward, and the lifting column 306 drives the fan-shaped plate 305 to overlap with the holding hopper 304, so that the abrasive remains in the holding hopper 304. Then, the attachment component 302 squeezes the abrasive, so that the excess coating adheres to the surface of the attachment component 302. Then, the lifting column 306 drives the fan-shaped plate 305 to move downward, so that the abrasive falls from the opening 3024 of the holding hopper 304 into the storage cylinder 301. Then, the attachment component 302 performs self-cleaning, collects the attached coating separately, and then cleans the abrasive.

[0111] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A coating sand mill for producing coatings, comprising a machine body (1) and a discharge pipe (4) disposed outside the machine body (1), characterized in that, Also includes: A sanding mechanism (2) is set above the machine body (1), a fixing plate (5) is installed on one side of the machine body (1), and a collecting mechanism (3) is set above the fixing plate (5). The collection mechanism (3) includes a storage cylinder (301) disposed above the fixed plate (5), an attachment component (302) disposed inside the storage cylinder (301), and an electric push rod (307) installed below the attachment component (302), the other end of which is connected to the interior of the storage cylinder (301).

2. The coating sand mill for producing coatings according to claim 1, characterized in that: The collection mechanism (3) also includes: A drive shaft (303) is mounted above the attachment assembly (302); A holding hopper (304) is installed on the inner wall of a storage cylinder (301); A sector plate (305) is evenly disposed inside the storage cylinder (301) and the sector plate (305) is disposed inside the holding hopper (304); A lifting column (306) is installed below the sector plate (305), and the bottom of the lifting column (306) is connected to the inside of the storage cylinder (301).

3. The coating sand mill for producing coatings according to claim 1, characterized in that: The grinding mechanism (2) includes: A sliding frame (206) is mounted on the surface of the body (1); A sliding groove (208) is symmetrically arranged above the sliding frame (206), and the sliding groove (208) is slidably connected to the sliding frame (206); Support leg (207) is mounted above slide groove (208).

4. The coating sand mill for producing coatings according to claim 3, characterized in that: The grinding mechanism (2) also includes: A grinding cylinder (201) is mounted above the support leg (207); A shock-absorbing assembly (204) is installed above the body (1) and is located below the grinding cylinder (201); Discharge assembly (205) is installed at one end of grinding cylinder (201).

5. The coating sand mill for producing coatings according to claim 4, characterized in that: The grinding mechanism (2) also includes: The main shaft (209) is installed outside the machine body (1), and the grinding cylinder (201) is sleeved on the outside of the main shaft (209); Dispersion disk (202), the dispersion disk (202) is evenly disposed outside the main shaft (209), the dispersion disk (202) is sleeved on the outside of the main shaft (209); A screen (203) is mounted on one end of a main shaft (209).

6. The coating sand mill for producing coatings according to claim 4, characterized in that: The damping component (204) includes: A mounting base (2041) is installed above the body (1); A spring (2042) is symmetrically arranged inside the fixed base (2041), and one end of the spring (2042) is connected to the interior of the fixed base (2041). A central groove (2044) is installed inside a fixed base (2041).

7. The coating sand mill for producing coatings according to claim 6, characterized in that: The damping assembly (204) also includes: A connecting rod (2043) is symmetrically arranged on both sides of the central groove (2044). The outside of the connecting rod (2043) is rotatably connected to the inside of the central groove (2044), and the other end of the connecting rod (2043) is connected to the outside of the spring (2042). An arc-shaped plate (2045) is installed above the central groove (2044), and the bottom of the arc-shaped plate (2045) is in contact with the top of the connecting rod (2043). Sensor (2046) is symmetrically arranged on the surface of the arc plate (2045) and is mounted on the inner circular surface of the arc plate (2045).

8. The coating sand mill for producing coatings according to claim 4, characterized in that: The discharge assembly (205) includes: A feeding pipe (2051) is installed at one end of the grinding cylinder (201); An electric switch (2052) is installed on the outside of the grinding cylinder (201); L-shaped rod (2053), which is installed below the electric switch (2052) and is in contact with the inner wall of the feed tube (2051); A baffle (2054) is installed at the other end of the L-shaped rod (2053) and is slidably connected to the inner wall of the grinding cylinder (201).

9. The coating sand mill for producing coatings according to claim 1, characterized in that: The attachment component (302) includes: A conical block (3021) is installed above the electric actuator (307), and an annular groove (3022) is provided on the side of the conical block (3021). A cleaning rod (3025) is symmetrically arranged outside the conical block (3021). One end of the cleaning rod (3025) is connected to the drive shaft (303). The surface of the cleaning rod (3025) is provided with protrusions (3026).

10. The coating sand mill for producing coatings according to claim 9, characterized in that: The attachment assembly (302) further includes: A convex ring (3023) is disposed below the conical block (3021), and an opening (3024) is provided on the surface of the convex ring (3023). A collection trough (3027) is installed inside the storage cylinder (301); Telescopic rod (3028), the telescopic rod (3028) is installed inside the storage cylinder (301), the telescopic rod (3028) is set inside the collection trough (3027); A disc (3029) is positioned above the telescopic rod (3028).

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