Sand mill for paint coating production

Abstract

The utility model relates to the technical field of paint coating production, in particular to a sand mill for paint coating production, which comprises a sand mill main body, and the top of the sand mill main body is fixedly connected with a feed hopper. Two sets of first grinding rollers, two sets of second grinding rollers and two sets of third grinding rollers are rotationally connected to the interior of the sand mill body from top to bottom, sieve plates are arranged below the two sets of first grinding rollers, the two sets of second grinding rollers and the two sets of third grinding rollers and located in the sand mill body, and guide assemblies are arranged at the tops of the sieve plates. The outer side of the sand mill body is fixedly connected with a connecting shell, the interior of the connecting shell is rotationally connected with an auger, and compared with an existing sand mill, the paint grinding device can effectively grind paint, improve the grinding effect, guarantee the uniform size of paint particles, conduct multiple grinding treatment procedures, guarantee the paint quality and improve the painting rate.

Description

Technical Field

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

[0002] Paint, traditionally known as varnish in China, is a type of coating applied to the surface of an object to be protected or decorated, forming a continuous, firmly adhering film. It is typically a viscous liquid made primarily of resin, oil, or emulsion, with or without pigments and fillers, and with appropriate additives, formulated with organic solvents or water. Currently, the production of paint involves processes such as ingredient mixing, dissolving, dispersing, and grinding.

[0003] Existing sand mills for paint production are mostly designed with a single shaft rotating inside the grinding chamber, resulting in low grinding efficiency, high energy consumption, and high production costs. They also suffer from insufficient grinding fineness, excessive and large particles, leading to a rough coating surface and easy peeling during application, resulting in extremely low paint quality. Therefore, it is particularly important to improve existing sand mills and design a new type of sand mill for paint and coating production to solve the above-mentioned technical defects and improve the overall practicality of the sand mill. Utility Model Content

[0004] The purpose of this invention is to provide a sand mill for paint and coating production. A first grinding roller coarsely grinds the paint, a second grinding roller finely grinds the coarsely ground paint, and a third grinding roller finely grinds the finely ground paint. This effectively grinds the paint, improves the grinding effect, and ensures uniform paint particle size. Simultaneously, when the moving frame guides the paint falling onto the top of the sieve plate, paint particles of the correct size fall through the sieve holes into the next grinding process, while unqualified paint particles are moved by the moving frame to the top of the inclined trough and guided into the connecting shell. The auger rotates, allowing the paint particles to be guided into the feed hopper for multiple grinding processes, ensuring paint quality and improving the paint application rate, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sand mill for paint and coating production includes a main body of the sand mill, a feed hopper fixedly connected to the top of the main body, two sets of first grinding rollers, two sets of second grinding rollers, and two sets of third grinding rollers rotatably connected from top to bottom inside the main body of the sand mill, a sieve plate is provided below the two sets of first grinding rollers, two sets of second grinding rollers, and two sets of third grinding rollers and inside the main body of the sand mill, a guide assembly is provided on the top of the sieve plate, a connecting shell is fixedly connected to the outside of the main body of the sand mill, and an auger is rotatably connected inside the connecting shell;

[0007] The guiding assembly is used to guide the coating falling on the top of the screen plate. The guiding assembly consists of a moving frame, a drive screw, a sleeve, a moving rod, a moving block, and a closing block. The moving frame is slidably connected to the top of the screen plate. The drive screw is rotatably connected to the inside of the sand mill body and located at the bottom of the moving frame. The sleeve is fixedly connected to the inside of the sand mill body and located above the screen plate. The moving rod is slidably connected to the inside of the sleeve. The moving block is fixedly connected to the outside of the moving rod. The closing block is rotatably connected to the bottom of the sleeve.

[0008] As a preferred embodiment of this utility model, the spacing between the two sets of first grinding rollers, the two sets of second grinding rollers, and the two sets of third grinding rollers decreases sequentially from top to bottom, and the first grinding rollers, the two sets of second grinding rollers, and the two sets of third grinding rollers are all fixedly connected to drive gears extending to the outer side of the sand mill body.

[0009] As a preferred embodiment of this utility model, the two sets of drive gears are meshed with each other, and multiple sets of first drive motors are fixedly connected to the outer side of the main body of the sand mill and the end away from the connecting shell. The drive end of the first drive motor is fixedly connected to the drive gear.

[0010] As a preferred embodiment of this utility model, the screen plate has multiple sets of screen holes inside, and the size of the screen holes inside the multiple sets of screen plates decreases from top to bottom. The screen plate is fixedly connected to the inside of the sand mill body.

[0011] As a preferred embodiment of this utility model, the end of the moving block near the closing block is rotatably connected to a rotating rod, and the end of the rotating rod away from the moving block is rotatably connected to the closing block.

[0012] As a preferred embodiment of this utility model, a moving ring is fixedly connected to the outside of the moving rod and inside the sleeve, and a compression spring is fixedly connected between the moving ring and the sleeve, with the compression spring sleeved on the outside of the moving rod.

[0013] As a preferred embodiment of this utility model, the end of the movable frame near the sleeve is designed with a trapezoidal structure, and a guide block is fixedly connected to the top of the movable frame.

[0014] As a preferred embodiment of this utility model, a threaded sleeve is provided at the bottom of the interior of the movable frame and on the outside of the drive screw. The threaded sleeve is threadedly connected to the drive screw, and the drive screw extends to the outside of the sand mill body and is fixedly connected to the drive end of the second drive motor.

[0015] As a preferred embodiment of this utility model, an inclined plate is fixedly connected to the top of the sieve plate and the end near the drive screw, the movable frame is slidably connected to the inclined plate through a through groove, an inclined groove is opened inside the main body of the sand mill and the end near the connecting shell, and the auger extends to the bottom of the connecting shell and is fixedly connected to the drive end of the third drive motor.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. In this utility model, through the design of a first grinding roller, a second grinding roller, a third grinding roller, and a sieve plate, the first grinding roller performs coarse grinding on the paint, the second grinding roller performs fine grinding on the coarsely ground paint, and the third grinding roller performs fine grinding on the finely ground paint. This enables effective grinding of the paint, improves the grinding effect, ensures uniform size of paint particles, and the ground paint falls to the top of the sieve plate. The paint can be screened through the sieve holes, and paint particles of qualified size can fall into the interior of the two sets of second grinding rollers or the two sets of third grinding rollers for grinding, ensuring the grinding effect of the paint.

[0018] 2. In this utility model, through the design of the guiding component, when the moving frame guides the paint falling on the top of the sieve plate, paint particles of qualified size fall through the sieve holes into the next grinding process, while unqualified paint particles are moved to the top of the inclined trough by the moving frame. At the same time, the displacement of the moving frame drives the guide block to move, so that the guide block can contact the moving rod, driving the moving rod to move. When the moving rod moves, it drives the moving block to move, so that the rotating rod can move, driving the closing block to rotate, so that the paint particles can be guided into the interior of the connecting shell. When the paint particles are guided into the interior of the connecting shell and come into contact with the auger, the third drive motor is started, driving the auger to rotate, so that the paint particles can be guided into the interior of the feed hopper, and repeat the multiple grinding processes to ensure the quality of the paint and improve the paint application rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the main body of the sand mill of this utility model;

[0021] Figure 3 This is a schematic diagram of the guide component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the mobile frame structure of this utility model.

[0023] In the diagram: 1. Main body of the sand mill; 2. Feed hopper; 3. First grinding roller; 4. Second grinding roller; 5. Third grinding roller; 6. Screen plate; 7. Guide assembly; 8. Connecting shell; 9. Screw; 10. Moving frame; 11. Drive screw; 12. Sleeve; 13. Moving rod; 14. Moving block; 15. Closing block; 16. Drive gear; 17. Screen hole; 18. Rotating rod; 19. Moving ring; 20. Compression spring; 21. Guide block; 22. Inclined plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Example:

[0026] Please see Figures 1-4 This utility model provides a technical solution:

[0027] A sand mill for paint and coating production includes a sand mill body 1, a feed hopper 2 fixedly connected to the top of the sand mill body 1, two sets of first grinding rollers 3, two sets of second grinding rollers 4 and two sets of third grinding rollers 5 rotatably connected from top to bottom inside the sand mill body 1, a screen plate 6 is provided below the two sets of first grinding rollers 3, two sets of second grinding rollers 4 and two sets of third grinding rollers 5 and located inside the sand mill body 1, a guide assembly 7 is provided on the top of the screen plate 6, a connecting shell 8 is fixedly connected to the outside of the sand mill body 1, and an auger 9 is rotatably connected inside the connecting shell 8;

[0028] The guide assembly 7 is used to guide the paint falling on the top of the screen plate 6. The guide assembly 7 consists of a moving frame 10, a drive screw 11, a sleeve 12, a moving rod 13, a moving block 14, and a closing block 15. The moving frame 10 is slidably connected to the top of the screen plate 6. The drive screw 11 is rotatably connected to the inside of the sand mill body 1 and located at the bottom of the moving frame 10. The sleeve 12 is fixedly connected to the inside of the sand mill body 1 and located above the screen plate 6. The moving rod 13 is slidably connected to the inside of the sleeve 12. The moving block 14 is fixedly connected to the outside of the moving rod 13. The closing block 15 is rotatably connected to the bottom of the sleeve 12.

[0029] Furthermore, the spacing between the two sets of first grinding rollers 3, the two sets of second grinding rollers 4, and the two sets of third grinding rollers 5 decreases sequentially from top to bottom. The first grinding rollers 3, the two sets of second grinding rollers 4, and the two sets of third grinding rollers 5 are all fixedly connected to drive gears 16 extending to the outer side of the main body 1 of the sand mill. The sequentially decreasing spacing between the two sets of first grinding rollers 3, the two sets of second grinding rollers 4, and the two sets of third grinding rollers 5 allows the first grinding rollers 3 to coarsely grind the paint, the second grinding rollers 4 to finely grind the coarsely ground paint, and the third grinding rollers 5 to finely grind the finely ground paint. This enables effective grinding of the paint, improves the grinding effect, and ensures uniform size of paint particles.

[0030] Two sets of drive gears 16 are meshed with each other. Multiple sets of first drive motors are fixedly connected to the outer side of the main body 1 of the sand mill and the end away from the connecting shell 8. The drive end of the first drive motor is fixedly connected to the drive gear 16. When the multiple sets of first drive motors are started, they drive the multiple sets of drive gears 16 to rotate, so that the other set of drive gears 16 that are meshed with them rotates, thereby enabling the two sets of first grinding rollers 3, the two sets of second grinding rollers 4 and the two sets of third grinding rollers 5 to rotate.

[0031] Secondly, the screen plate 6 has multiple sets of screen holes 17 inside. The size of the screen holes 17 inside the multiple sets of screen plates 6 decreases from top to bottom. The screen plate 6 is fixedly connected to the inside of the main body 1 of the sand mill. When the two sets of first grinding rollers 3, two sets of second grinding rollers 4 and two sets of third grinding rollers 5 grind the coating, the ground coating falls on the top of the screen plate 6. The coating can be screened through the screen holes 17. The coating particles of qualified size can fall into the inside of the two sets of second grinding rollers 4 or the two sets of third grinding rollers 5 for grinding, thus ensuring the grinding effect of the coating.

[0032] Furthermore, a rotating rod 18 is rotatably connected to one end of the moving block 14 near the closing block 15, and the other end of the rotating rod 18 away from the moving block 14 is rotatably connected to the closing block 15. When the moving rod 13 moves, it drives the moving block 14 to move, so that the rotating rod 18 can move and drive the closing block 15 to rotate.

[0033] Furthermore, a moving ring 19 is fixedly connected to the outside of the moving rod 13 and inside the sleeve 12. A compression spring 20 is fixedly connected between the moving ring 19 and the sleeve 12. The compression spring 20 is sleeved on the outside of the moving rod 13. The compression spring 20 drives the moving ring 19 to move, so that the moving rod 13 can move, drive the moving block 14 to reset, so that the rotating rod 18 drives the closing block 15 to reset, and close the main body 1 of the sand mill.

[0034] Furthermore, the movable frame 10 has a trapezoidal structure at one end near the sleeve 12. A guide block 21 is fixedly connected to the top of the movable frame 10. A threaded sleeve is provided at the bottom of the movable frame 10 and outside the drive screw 11. The threaded sleeve is threadedly connected to the drive screw 11. The drive screw 11 extends to the outside of the main body 1 of the sand mill and is fixedly connected to the drive end of the second drive motor. When the second drive motor is started, the drive screw 11 is rotated, causing the threaded sleeve to move and the movable frame 10 to move. When the movable frame 10 guides the paint falling on the top of the screen plate 6, the paint particles of qualified size fall through the screen hole 17 into the next grinding process, and the unqualified paint particles are moved to the top of the inclined groove by the movable frame 10. At the same time, the displacement of the movable frame 10 causes the guide block 21 to move, so that the guide block 21 can contact the movable rod 13.

[0035] Furthermore, an inclined plate 22 is fixedly connected to the top of the sieve plate 6 and the end near the drive screw 11. The moving frame 10 is slidably connected to the inclined plate 22 through a through groove. An inclined groove is opened inside the main body 1 of the sand mill and at the end near the connecting shell 8. The auger 9 extends to the bottom of the connecting shell 8 and is fixedly connected to the drive end of the third drive motor. When the paint particles fall to the top of the sieve plate 6, the inclined plate 22 can guide the paint particles to prevent them from falling to the top of the drive screw 11 and affecting the operation of the drive screw 11. When the paint particles are introduced into the interior of the connecting shell 8 and come into contact with the auger 9, the third drive motor is started to drive the auger 9 to rotate, so that the paint particles can be introduced into the interior of the feed hopper 2 for multiple grinding processes to ensure the quality of the paint and improve the coating rate.

[0036] In this embodiment, the specific implementation scenario is as follows: In actual use, the paint is introduced into the feed hopper 2, and multiple sets of first drive motors are started, which drive multiple sets of drive gears 16 to rotate, causing another set of drive gears 16 that are meshed with them to rotate. This allows the two sets of first grinding rollers 3, two sets of second grinding rollers 4, and two sets of third grinding rollers 5 to rotate. The distance between the two sets of first grinding rollers 3, two sets of second grinding rollers 4, and two sets of third grinding rollers 5 decreases sequentially, so that the first grinding rollers 3 coarsely grind the paint, and the second grinding rollers 4 finely grind the coarsely ground paint. The third grinding roller 5 performs fine grinding on the paint, effectively grinding the paint and improving the grinding effect. This ensures that the paint particles are of uniform size. The ground paint falls onto the top of the sieve plate 6 and is screened through the sieve holes 17. Paint particles of the correct size fall into the two sets of second grinding rollers 4 or two sets of third grinding rollers 5 for further grinding, ensuring the grinding effect. The second drive motor is started, driving the drive screw 11 to rotate, causing the threaded sleeve to move and thus moving the moving frame 10. When the movable frame 10 guides the paint falling onto the top of the sieve plate 6, paint particles of acceptable size fall through the sieve holes 17 into the next grinding process, while unacceptable paint particles are moved by the movable frame 10 to the top of the inclined trough. Simultaneously, the movement of the movable frame 10 causes the guide block 21 to move, allowing it to contact the movable rod 13 and move it. As the movable rod 13 moves, it causes the movable block 14 to move, enabling the rotating rod 18 to move and causing the closing block 15 to rotate, allowing the paint particles to be guided into the continuous grinding process. Inside the receiving shell 8, when paint particles fall onto the top of the screen plate 6, the inclined plate 22 can guide the paint particles to prevent them from falling onto the top of the drive screw 11 and affecting its operation. When the paint particles are introduced into the inside of the receiving shell 8 and come into contact with the auger 9, the third drive motor is started to drive the auger 9 to rotate, so that the paint particles can be introduced into the inside of the feed hopper 2 for multiple grinding processes to ensure the quality of the paint and improve the coating rate. Compared with the existing sand mill, this utility model can improve the overall practicality of the sand mill through its design.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand mill for paint and coating production, comprising a sand mill body (1), characterized in that: The top of the main body (1) of the sand mill is fixedly connected to a feed hopper (2). The interior of the main body (1) of the sand mill is rotatably connected from top to bottom to two sets of first grinding rollers (3), two sets of second grinding rollers (4) and two sets of third grinding rollers (5). Below the two sets of first grinding rollers (3), two sets of second grinding rollers (4) and two sets of third grinding rollers (5) and inside the main body (1) of the sand mill, there is a screen plate (6). The top of the screen plate (6) is provided with a guide component (7). The outer side of the main body (1) of the sand mill is fixedly connected to a connecting shell (8). The interior of the connecting shell (8) is rotatably connected to an auger (9). The guide assembly (7) is used to guide the coating falling on the top of the screen plate (6). The guide assembly (7) consists of a moving frame (10), a drive screw (11), a sleeve (12), a moving rod (13), a moving block (14), and a closing block (15). The moving frame (10) is slidably connected to the top of the screen plate (6). The drive screw (11) is rotatably connected to the inside of the sand mill body (1) and located at the bottom of the moving frame (10). The sleeve (12) is fixedly connected to the inside of the sand mill body (1) and located above the screen plate (6). The moving rod (13) is slidably connected to the inside of the sleeve (12). The moving block (14) is fixedly connected to the outside of the moving rod (13). The closing block (15) is rotatably connected to the bottom of the sleeve (12).

2. The sand mill for paint and coating production according to claim 1, characterized in that: The spacing between the two sets of first grinding rollers (3), the two sets of second grinding rollers (4) and the two sets of third grinding rollers (5) decreases from top to bottom. The first grinding roller (3), the two sets of second grinding rollers (4) and the two sets of third grinding rollers (5) are all fixedly connected to the outer side of the main body (1) of the sand mill with drive gears (16).

3. A sand mill for paint and coating production according to claim 2, characterized in that: The two sets of drive gears (16) are meshed with each other. Multiple sets of first drive motors are fixedly connected to the outer side of the main body (1) of the sand mill and the end away from the connecting shell (8). The drive end of the first drive motor is fixedly connected to the drive gear (16).

4. A sand mill for paint and coating production according to claim 1, characterized in that: The screen plate (6) has multiple sets of screen holes (17) inside. The size of the screen holes (17) inside the multiple sets of screen plates (6) decreases from top to bottom. The screen plate (6) is fixedly connected to the inside of the main body (1) of the sand mill.

5. A sand mill for paint and coating production according to claim 1, characterized in that: The moving block (14) is rotatably connected to a rotating rod (18) at one end near the closing block (15), and the rotating rod (18) is rotatably connected to the closing block (15) at the other end away from the moving block (14).

6. A sand mill for paint and coating production according to claim 1, characterized in that: A moving ring (19) is fixedly connected to the outside of the moving rod (13) and inside the sleeve (12). A compression spring (20) is fixedly connected between the moving ring (19) and the sleeve (12). The compression spring (20) is sleeved on the outside of the moving rod (13).

7. A sand mill for paint and coating production according to claim 1, characterized in that: The movable frame (10) has a trapezoidal structure at one end near the sleeve (12), and a guide block (21) is fixedly connected to the top of the movable frame (10).

8. A sand mill for paint and coating production according to claim 1, characterized in that: The bottom of the movable frame (10) is provided with a threaded sleeve located outside the drive screw (11). The threaded sleeve is threadedly connected to the drive screw (11). The drive screw (11) extends to the outside of the sand mill body (1) and is fixedly connected to the drive end of the second drive motor.

9. A sand mill for paint and coating production according to claim 1, characterized in that: An inclined plate (22) is fixedly connected to the top of the sieve plate (6) and to one end near the drive screw (11). The moving frame (10) is slidably connected to the inclined plate (22) through a through groove. An inclined groove is provided inside the main body (1) of the sand mill and to one end near the connecting shell (8). The auger (9) extends to the bottom of the connecting shell (8) and is fixedly connected to the drive end of the third drive motor.

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