Screening device for powder coating processing

Abstract

The utility model relates to the technical field of powder coating processing, and discloses a screening device for powder coating processing, which comprises a shell, a screen drum is rotatably mounted in the shell, one end of the screen drum is rotatably connected with one end of a feed port, a mounting frame is arranged at one end of the shell, and a motor is arranged on one side of the mounting frame. A rotating shaft connected with the output end of the motor is rotationally mounted on the inner side of the screen drum, a plurality of scraping rods are symmetrically arranged on the outer side of the rotating shaft, a driving assembly connected with the output end of the motor is arranged on the side, close to the mounting frame, of the screen drum, and a knocking mechanism is arranged at the top of the shell and connected with the driving assembly through a butt joint assembly; the knocking mechanism comprises a mounting seat, the mounting seat is detachably mounted at the top of the shell, and a mounting groove matched with the mounting seat is formed in the top of the shell; through linkage of the motor and the driving assembly, the scraping rod and the screen drum are driven to rotate synchronously, stirring screening and screen drum scraping are achieved, meanwhile, the rapping rod is driven to knock the screen drum to enable the screen drum to vibrate, screen hole powder is vibrated out, blocking is effectively prevented, and the screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of powder coating processing, and in particular to a sieving device for powder coating processing. Background Technology

[0002] Powder coatings, as a new type of environmentally friendly coating, are based on solid resins and incorporate pigments, fillers, and various functional additives in a solid powder form. Compared with ordinary solvent-based coatings and water-based coatings, their biggest feature is that they abandon solvents and water as dispersion media and instead use air as a carrier. This unique dispersion method gives them many significant advantages.

[0003] In the powder coating processing flow, the sieving process is crucial, as it directly affects the particle size uniformity and product quality of the powder coating. However, most traditional sieving devices have significant drawbacks in practical applications. When sieving powder coatings, due to the physical properties of the powder coatings themselves, they are prone to adhesion to the inner wall of the sieve cylinder. If these powder coatings adhering to the inner wall of the sieve cylinder are not cleaned in time, they will gradually accumulate and thicken over time, causing the sieve holes to become clogged. Once the sieve holes are clogged, the speed at which the powder coating passes through the sieve cylinder will be greatly reduced, and the sieving efficiency will decrease, affecting the production schedule. Utility Model Content

[0004] In view of the problem that most existing traditional sieving devices are prone to clogging of the sieve holes on the sieve cylinder during use, which affects the sieving efficiency, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a sieving device for powder coating processing, including a shell, a feed inlet on one side of the shell, a sieve cylinder rotatably installed inside the shell, one end of the sieve cylinder being rotatably connected to one end of the feed inlet, a mounting frame at one end of the shell, a motor on one side of the mounting frame, a rotating shaft rotatably installed inside the sieve cylinder and connected to the output end of the motor, a plurality of scrapers symmetrically arranged on the outer side of the rotating shaft, a drive assembly connected to the output end of the motor on the side of the sieve cylinder near the mounting frame, and a striking mechanism on the top of the shell, the striking mechanism being connected to the drive assembly through a docking assembly;

[0006] The striking mechanism includes a mounting base, which is detachably mounted on the top of the housing, and the top of the housing has a mounting groove adapted to the mounting base.

[0007] As a preferred embodiment, the striking mechanism further includes a drive shaft, which is rotatably mounted in the mounting base. One end of the drive shaft is connected to the docking assembly. Several cams 1 and cams 2 are respectively sleeved on the outer side of the drive shaft, and several cams 1 and cams 2 are alternately arranged. A striking rod is provided on the same side of each of the cams 1 and cams 2. The lower end of the striking rod passes through the bottom of the mounting base, and a cylinder is connected to one side of the upper end of the striking rod. A drive groove adapted to the cylinder is opened on the same side of each of the cams 1 and cams 2.

[0008] As a preferred embodiment, the mounting base is symmetrically provided with cleaning brushes at its bottom, and the first cam and the second cam are of the same size, and both the first cam and the second cam are elliptical in shape.

[0009] As a preferred embodiment, the drive assembly includes a first gear fixedly sleeved on the outside of the motor output end. A second gear, meshing with the first gear, is rotatably mounted on one side of the mounting bracket, with the second gear located below the first gear. A double-sided toothed ring is fixedly connected to one end of the screen cylinder, meshing with the second gear and located outside both the first and second gears. A rotating rod is rotatably mounted on the top side of the housing, with a third gear connected to one end of the rotating rod, meshing with the double-sided toothed ring. The rotating rod is connected to the docking assembly.

[0010] As a preferred embodiment, the scraper has a U-shaped structure, the diameter of the first gear is larger than the diameter of the second gear, and the bottom of the outer casing on the side away from the feed inlet has a discharge outlet communicating with the outer casing.

[0011] As a preferred embodiment, the docking assembly includes a docking sleeve, which is slidably mounted on the outside of the rotating rod. The rotating rod is rotatably connected to the outer shell via a support rod. A spring and a turntable are fitted on the outside of the rotating rod between the support rod and the docking sleeve. The turntable is rotatably connected to the support rod. A limiting block is symmetrically provided at one end of the drive shaft located on the outside of the mounting base. A limiting groove adapted to the limiting block is symmetrically opened on the inner wall of the docking sleeve.

[0012] As a preferred embodiment, the two ends of the spring are fixedly connected to the turntable and the docking sleeve, respectively. The docking sleeve consists of a columnar structure with an inner wall surface combined into a convex shape and two rectangular sliders. The outer wall of the rotating rod is symmetrically provided with rail grooves that are adapted to the rectangular sliders.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. This utility model utilizes an electric motor to drive several scrapers to rotate while simultaneously driving the screen cylinder to rotate, so as to stir and sieve the powder coating. At the same time, the scrapers clean the screen cylinder to prevent material from sticking and clogging the screen holes. It also drives several knocking rods to move up and down continuously to knock the screen cylinder below, causing it to vibrate and shake the powder coating out of its screen holes, further improving the anti-clogging effect and thus improving the sieving efficiency.

[0015] 2. This utility model, through the docking component, allows for easy docking or disassembly between the rotating rod and the drive shaft, so as to transmit power or facilitate the disassembly, inspection and maintenance of the mounting base later. Attached Figure Description

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

[0017] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure between the mounting base and the screen cylinder of this utility model;

[0019] Figure 4 This is a partial cross-sectional structural diagram of the connecting sleeve and rotating rod of this utility model;

[0020] Figure 5 For the present utility model Figure 2 Enlarged structural diagram of A in the middle

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Outer shell; 2. Feed inlet; 3. Screen cylinder; 4. Discharge outlet; 5. Mounting frame; 6. Motor; 7. Rotating shaft; 8. Scraper; 9. Gear 1; 10. Gear 2; 11. Double-sided gear ring; 12. Gear 3; 13. Rotating rod; 14. Mounting base; 15. Cleaning brush; 16. Drive shaft; 17. Cam 1; 18. Cam 2; 19. Drive groove; 20. Knocking rod; 21. Cylindrical rod; 22. Connecting sleeve; 23. Limiting block; 24. Spring; 25. Turntable. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Reference Figures 1-3 and Figure 5As shown, a sieving device for powder coating processing is provided, including a housing 1, a feed inlet 2 on one side of the housing 1, a sieve cylinder 3 rotatably installed inside the housing 1, and one end of the sieve cylinder 3 rotatably connected to one end of the feed inlet 2, a mounting frame 5 at one end of the housing 1, a motor 6 on one side of the mounting frame 5, a rotating shaft 7 rotatably installed inside the sieve cylinder 3 and connected to the output end of the motor 6, a plurality of scrapers 8 symmetrically arranged on the outer side of the rotating shaft 7, a drive assembly connected to the output end of the motor 6 on the side of the sieve cylinder 3 near the mounting frame 5, and a striking mechanism on the top of the housing 1, which is connected to the drive assembly through a docking assembly; the striking mechanism includes a mounting base 14, which is detachably installed on the top of the housing 1, and the top of the housing 1 has a mounting groove adapted to the mounting base 14. In this example, the mounting base 14 is connected to the housing 1 by bolts, and the mounting base 14 can also be disassembled using a quick-fix structure in the prior art, such as a snap-fit ​​connection, for easy quick fixation.

[0025] In this example, the striking mechanism also includes a drive shaft 16, which is rotatably mounted in the mounting base 14. One end of the drive shaft 16 is connected to the docking assembly. Several cams 17 and cams 18 are respectively sleeved on the outside of the drive shaft 16, and the cams 17 and cams 18 are alternately arranged. A striking rod 20 is provided on the same side of the cams 17 and cams 28. The lower end of the striking rod 20 passes through the bottom of the mounting base 14, and a cylinder 21 is connected to one side of the upper end of the striking rod 20. A drive groove 19 adapted to the cylinder 21 is opened on the same side of the cams 17 and cams 28. The motor 6 can work, and in conjunction with the drive assembly, it can drive several scrapers 8 to rotate while driving the screen cylinder 3 to rotate, so as to stir and screen the powder coating. At the same time, the scrapers 8 are used to scrape the screen cylinder 3 to prevent the material from sticking and clogging the screen holes. At the same time, it will also drive several striking rods 20 to move up and down continuously to strike the screen cylinder 3 below, causing it to vibrate, thereby shaking out the powder coating in its screen holes, further improving the anti-clogging effect, and thus improving the screening efficiency.

[0026] In this example, the bottom of the mounting base 14 is symmetrically provided with cleaning brushes 15. Cam 17 and Cam 2 18 have the same size and are both elliptical in shape, so that the cleaning brushes 15 can be used to clean the rotating screen cylinder 3 below, thereby improving the screen hole anti-clogging effect.

[0027] In this example, the drive assembly includes gear 9, which is fixedly sleeved on the outside of the output end of motor 6. Gear 10, which meshes with gear 9, is rotatably mounted on one side of mounting bracket 5 and is located below gear 9. A double-sided toothed ring 11 is fixedly connected to one end of screen cylinder 3 and meshes with gear 10. The double-sided toothed ring 11 is located outside gear 10 and gear 9. A rotating rod 13 is rotatably mounted on one side of the top of housing 1. Gear 12 is connected to one end of rotating rod 13 and meshes with double-sided toothed ring 11. Rotating rod 13 is connected to docking assembly to transmit power so that the power of motor 6 drives screen cylinder 3 to rotate, and at the same time provides power for driving drive shaft 16 to rotate.

[0028] In this example, the scraper 8 has a U-shaped structure, the diameter of gear 19 is larger than the diameter of gear 210, and the bottom of the outer shell 1 away from the feed inlet 2 is provided with a discharge port 4 that communicates with the outer shell 1, so that the scraper 8 can be used to scrape the powder adhering to the inner wall of the screen cylinder 3 to avoid the screen holes being blocked.

[0029] Reference Figures 1-4 As shown in this example, the docking assembly includes a docking sleeve 22, which is slidably mounted on the outside of the rotating rod 13. The rotating rod 13 is rotatably connected to the outer shell 1 via a support rod. A spring 24 and a turntable 25 are fitted on the outside of the rotating rod 13 between the support rod and the docking sleeve 22. The turntable 25 is rotatably connected to the support rod. A limiting block 23 is symmetrically provided at one end of the drive shaft 16 located on the outside of the mounting base 14. A limiting groove adapted to the limiting block 23 is symmetrically opened on the inner wall of the docking sleeve 22. Through the docking assembly, the rotating rod 13 and the drive shaft 16 can be easily docked or separated for power transmission or for subsequent disassembly, inspection and maintenance of the mounting base 14.

[0030] In this example, the two ends of the spring 24 are fixedly connected to the turntable 25 and the docking sleeve 22 respectively. The docking sleeve 22 consists of a columnar structure with an inner wall surface in the shape of a convex character and two rectangular sliders. The outer wall of the rotating rod 13 is symmetrically provided with rail grooves that are adapted to the rectangular sliders, so that the docking sleeve 22 can slide on the rotating rod 13 and rotate synchronously with the rotating rod 13, thereby transmitting power and facilitating the disconnection between the rotating rod 13 and the drive shaft 16 when the mounting base 14 is disassembled later.

[0031] During operation, the motor 6 drives the rotating shaft 7 to rotate the scraper 8. Simultaneously, the rotating shaft 7 drives gear 9 to rotate, which in turn drives gear 10. Gear 10 then drives the double-sided gear ring 11, which in turn drives the sieve cylinder 3 to rotate. This causes the scraper 8 to stir the powder coating and, in conjunction with the sieve cylinder 3, to sieve it. Simultaneously, the scraper 8 cleans the coating adhering to the inner wall of the sieve cylinder 3, preventing it from clogging the sieve holes. The rotation of the double-sided gear ring 11 drives gear 12, which in turn drives the rotating rod 13. The rotating rod 13 then drives the mating sleeve 22, in conjunction with the limiting block 23, to drive the drive shaft 16 to rotate synchronously, thereby driving several cams 17 and cam 18. The cylinder 21 rotates, and in conjunction with the drive groove 19, it continuously drives the cylinder 21 to move the knocking rod 20 up and down reciprocally. The lower end of the knocking rod 20 continuously strikes the rotating screen cylinder 3 below, thereby shaking off the powder coating adhering to it, preventing screen hole blockage, improving the anti-clogging effect, and thus improving screening efficiency. It is easy to use. When it is necessary to disassemble the mounting base 14 for inspection and maintenance, the bolts connecting the mounting base 14 and the outer shell 1 can be removed first. Then, the connecting sleeve 22 is dragged to slide on the rotating rod 13 and squeeze the spring 24, so that the connecting sleeve 22 is separated from the limiting block 23. The mounting base 14 can then be removed from the outer shell 1 for inspection and maintenance. It is easy to use.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sieving device for powder coating processing, comprising a housing (1), characterized in that: The outer shell (1) has a feed inlet (2) on one side. A screen cylinder (3) is rotatably installed inside the outer shell (1), and one end of the screen cylinder (3) is rotatably connected to one end of the feed inlet (2). A mounting frame (5) is provided at one end of the outer shell (1). A motor (6) is provided on one side of the mounting frame (5). A rotating shaft (7) connected to the output end of the motor (6) is rotatably installed inside the screen cylinder (3). Several scrapers (8) are symmetrically provided on the outside of the rotating shaft (7). A drive assembly connected to the output end of the motor (6) is provided on the side of the screen cylinder (3) near the mounting frame (5). A striking mechanism is provided on the top of the outer shell (1), and the striking mechanism is connected to the drive assembly through a docking assembly. The striking mechanism includes a mounting base (14), which is detachably mounted on the top of the housing (1), and the top of the housing (1) has a mounting groove adapted to the mounting base (14).

2. A sieving device for powder coating processing according to claim 1, characterized in that: The striking mechanism also includes a drive shaft (16), which is rotatably mounted in the mounting base (14). One end of the drive shaft (16) is connected to the docking assembly. Several cams (17) and cams (18) are respectively sleeved on the outside of the drive shaft (16), and several cams (17) and cams (18) are alternately arranged. A striking rod (20) is provided on the same side of the cams (17) and cams (18). The lower end of the striking rod (20) penetrates the bottom of the mounting base (14). A cylinder (21) is connected to one side of the upper end of the striking rod (20). A drive groove (19) adapted to the cylinder (21) is opened on the same side of the cams (17) and cams (18).

3. A sieving device for powder coating processing according to claim 2, characterized in that: The mounting base (14) is symmetrically provided with cleaning brushes (15) at the bottom. The first cam (17) and the second cam (18) are the same size and are both elliptical.

4. A sieving device for powder coating processing according to claim 3, characterized in that: The drive assembly includes a gear 1 (9), which is fixedly sleeved on the outside of the output end of the motor (6). A gear 2 (10) that meshes with the gear 1 (9) is rotatably mounted on one side of the mounting bracket (5), and the gear 2 (10) is located below the gear 1 (9). A double-sided toothed ring (11) is fixedly connected to one end of the screen cylinder (3). The double-sided toothed ring (11) meshes with the gear 2 (10), and the double-sided toothed ring (11) is located outside the gear 2 (10) and the gear 1 (9). A rotating rod (13) is rotatably mounted on one side of the top of the outer shell (1). A gear 3 (12) is connected to one end of the rotating rod (13), and the gear 3 (12) meshes with the double-sided toothed ring (11). The rotating rod (13) is connected to the docking assembly.

5. A sieving device for powder coating processing according to claim 4, characterized in that: The scraper (8) has a U-shaped structure, the diameter of gear one (9) is larger than the diameter of gear two (10), and the bottom of the outer shell (1) on the side away from the feed inlet (2) is provided with a discharge port (4) that communicates with the outer shell (1).

6. A sieving device for powder coating processing according to claim 4, characterized in that: The docking assembly includes a docking sleeve (22), which is slidably mounted on the outside of the rotating rod (13). The rotating rod (13) is rotatably connected to the outer shell (1) through a support rod. A spring (24) and a turntable (25) are sleeved on the outside of the rotating rod (13) between the support rod and the docking sleeve (22). The turntable (25) is rotatably connected to the support rod. A limiting block (23) is symmetrically provided at one end of the drive shaft (16) on the outside of the mounting base (14). A limiting groove adapted to the limiting block (23) is symmetrically opened on the inner wall of the docking sleeve (22).

7. A sieving device for powder coating processing according to claim 6, characterized in that: The spring (24) is fixedly connected to the turntable (25) and the docking sleeve (22) at both ends respectively. The docking sleeve (22) is composed of a columnar structure with an inner wall surface combined into a convex shape and two rectangular sliders. The outer wall of the rotating rod (13) is symmetrically provided with rail grooves that are adapted to the rectangular sliders.

Images