High-hardness powder coating sieving device

Abstract

The utility model discloses a high-hardness powder coating sieving device, and particularly relates to the technical field of powder sieving, the high-hardness powder coating sieving device comprises a sieving box, a feeding mechanism is arranged on one side of the sieving box, and a sieving mechanism is arranged in the sieving box; the feeding mechanism comprises a feeding pipe, the feeding pipe is fixed to one side of the screening box, a fan is fixedly installed at one end of the feeding pipe, the top of the feeding pipe fixedly communicates with a connecting pipe, the top of the connecting pipe fixedly communicates with a feeding box, and the top of the feeding box fixedly communicates with an inlet pipe. The screening efficiency is improved through rotation of the filter screen cylinder, when the filter screen cylinder rotates, the brush plate is always in close contact with the surface of the filter screen cylinder under the elastic action of the fixed spring, along with rotation of the filter screen cylinder, the brush plate continuously cleans the surface of the filter screen cylinder, attached high-hardness powder is brushed off in time, mesh holes are effectively prevented from being blocked, and the screening efficiency is improved. And stable sieving efficiency is ensured, and the sieving efficiency is prevented from being influenced by accumulation and blockage of high-hardness powder.

Description

Technical Field

[0001] This utility model relates to the field of powder sieving technology, and more specifically, to a sieving device for high-hardness powder coatings. Background Technology

[0002] In the production and processing of high-hardness powder coatings, the sieving process is a key step in ensuring product quality, but it faces many challenging problems due to the special properties of high-hardness powder.

[0003] A search revealed that Chinese Patent CN221816703U discloses a powder coating sieving device. This device addresses the problem that existing sieving devices typically lack any sealing measures at the feed inlet, leading to severe dust generation during sieving. Dust can easily escape from the inlet and enter the working environment, causing pollution and potentially inhaling by workers, resulting in respiratory harm. The new device uses a feed hopper to guide the powder coating to be sieved into the screening frame inside the outer casing. Two baffles are then reset to a horizontal position, sealing the top of the feed hopper. A locking block, under the elastic force of a spring, inserts into the housing, securing the two baffles and ensuring a stable seal on the top of the feed hopper. This effectively prevents dust from escaping from the outer casing during sieving, contaminating workers, and causing respiratory problems.

[0004] Using a conventional fixed screen structure, the lack of efficient power drive to ensure thorough sieving of powders, coupled with the agglomeration characteristics of high-hardness powders making it difficult for them to pass through the screen under their own weight, results in a large amount of powder that meets the particle size requirements being trapped above the screen, severely reducing sieving efficiency. At the same time, high-hardness powders tend to adhere to the screen during sieving, and due to their hard texture, ordinary cleaning methods are difficult to completely remove them. Screen clogging not only reduces sieving efficiency but also leads to a decrease in sieving accuracy. Utility Model Content

[0005] In order to overcome the problems and defects in the prior art, this utility model provides a high-hardness powder coating sieving device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-hardness powder coating sieving device, including a sieving box, a feeding mechanism on one side of the sieving box, and a sieving mechanism inside the sieving box;

[0007] The feeding mechanism includes a feeding pipe, which is fixed to one side of the screening box. A fan is fixedly installed at one end of the feeding pipe. A connecting pipe is fixedly connected to the top of the feeding pipe. An inlet box is fixedly connected to the top of the connecting pipe. An inlet pipe is fixedly connected to the top of the inlet box.

[0008] The sieving mechanism includes a filter cylinder, which is installed at one end of the feed pipe. A first gear is fixedly sleeved on the outside of the filter cylinder, and a second gear meshes with the top of the first gear. A motor is fixedly installed on one side of the sieving box, and a cleaning mechanism is provided between the sieving box and the filter cylinder.

[0009] Preferably, the cleaning mechanism includes a fixing box, which is fixed to one side of the inner wall of the sieve box, and a fixing spring is fixedly connected to the top of the inner wall of the fixing box.

[0010] Preferably, a movable rod is fixedly connected to the bottom of the fixed spring, and the bottom of the movable rod passes through the fixed box and extends to the bottom of the fixed box.

[0011] Preferably, the movable rod is rotatably connected to the fixed box, and a brush plate is fixedly connected to the bottom of the movable rod.

[0012] Preferably, a discharge pipe is fixedly connected to the bottom of the sieving box, and a valve is installed inside the discharge pipe.

[0013] Preferably, the motor output end is fixedly connected to the second gear, the filter cylinder is rotatably connected to both the feed pipe and the sieve box, and one end of the feed pipe passes through the filter cylinder and extends into the interior of the filter cylinder.

[0014] Preferably, the inner wall surface of the filter cylinder is provided with threads, and a threaded cap is threadedly connected inside the filter cylinder.

[0015] Preferably, support columns are fixedly connected to both sides of the sieving box.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. The motor drives the second gear, which in turn drives the filter cylinder fitted with the first gear to rotate. During the rotation, high-hardness powder coatings of different particle sizes are effectively separated. Powder that meets the particle size requirements passes through the mesh and falls to the bottom of the sieving box, improving sieving efficiency. When the filter cylinder rotates, the brush plate is always in close contact with the surface of the filter cylinder under the elastic action of the fixed spring. As the filter cylinder rotates, the brush plate continuously cleans its surface, brushing off the attached high-hardness powder in time, effectively preventing mesh blockage, ensuring stable sieving efficiency, extending the service life of the filter cylinder, keeping the screen unobstructed, and avoiding the impact of powder accumulation and blockage on sieving efficiency.

[0018] 2. By adopting a fan-powered conveying design, the feed box and feed pipe are connected through a connecting pipe. The air force generated by the fan can effectively disperse some of the clumps of powder, avoiding feed blockage caused by clumping. Compared with traditional gravity feeding, it greatly improves the smoothness and stability of feeding, ensuring that high-hardness powder coatings can be continuously and accurately conveyed to the screening mechanism. 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 rear view structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the internal structure of the sieving box of this utility model.

[0022] Figure 4 For the present utility model Figure 2 Cross-sectional view of the structure.

[0023] Figure 5 This is a schematic diagram of the cleaning mechanism of this utility model.

[0024] The attached diagram is labeled as follows: 1. Screening box; 2. Feed pipe; 3. Blower; 4. Connecting pipe; 5. Feed box; 6. Inlet pipe; 7. Filter screen cylinder; 8. First gear; 9. Second gear; 10. Motor; 11. Discharge pipe; 12. Valve; 13. Fixing box; 14. Fixing spring; 15. Moving rod; 16. Brush plate; 17. Threaded cap; 18. Support column. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] As attached Figure 1-5 The high-hardness powder coating sieving device shown includes a sieving box 1, a feeding mechanism on one side of the sieving box 1, and a sieving mechanism inside the sieving box 1.

[0027] The feeding mechanism includes a feeding pipe 2, which is fixed on one side of the screening box 1. A fan 3 is fixedly installed at one end of the feeding pipe 2. A connecting pipe 4 is fixedly connected to the top of the feeding pipe 2. An inlet box 5 is fixedly connected to the top of the connecting pipe 4. An inlet pipe 6 is fixedly connected to the top of the inlet box 5.

[0028] The screening mechanism includes a filter cylinder 7, which is installed at one end of the feed pipe 2. A first gear 8 is fixedly sleeved on the outside of the filter cylinder 7, and a second gear 9 is meshed on the top of the first gear 8. A motor 10 is fixedly installed on one side of the screening box 1, and a cleaning mechanism is provided between the screening box 1 and the filter cylinder 7.

[0029] As attached Figure 4 , 5 As shown, the cleaning mechanism includes a fixed box 13, which is fixed to one side of the inner wall of the sieve box 1. A fixed spring 14 is fixedly connected to the top of the inner wall of the fixed box 13, and a moving rod 15 is fixedly connected to the bottom of the fixed spring 14. The bottom of the moving rod 15 passes through the fixed box 13 and extends to the bottom of the fixed box 13. The moving rod 15 is rotatably connected to the fixed box 13. A brush plate 16 is fixedly connected to the bottom of the moving rod 15. A discharge pipe 11 is fixedly connected to the bottom of the sieve box 1. A valve 12 is installed inside the discharge pipe 11. The brush plate 16 is pressed against the screen surface of the filter cylinder 7 by the rebound force of the fixed spring 14, which facilitates the brushing of high-hardness powder when the filter cylinder 7 rotates, effectively preventing high-hardness powder from clogging the screen.

[0030] As attached Figure 2-4 As shown, the output end of the motor 10 is fixedly connected to the second gear 9, and the filter cylinder 7 is rotatably connected to the feed pipe 2 and the sieve box 1. One end of the feed pipe 2 passes through the filter cylinder 7 and extends into the interior of the filter cylinder 7, so that the filter cylinder 7 can rotate to perform sieving and ensure the sieving effect.

[0031] As attached Figure 2-4 As shown, the inner wall surface of the filter cylinder 7 is provided with threads, and the internal thread of the filter cylinder 7 is connected to a threaded cover 17. Opening the threaded cover 17 facilitates the discharge of large particles of powder coating.

[0032] As attached Figure 1-3 As shown, support columns 18 are fixedly connected to both sides of the screening box 1 to ensure the stability of the overall device.

[0033] The working principle of this utility model is as follows: High-hardness powder coating enters the feed box 5 through the inlet pipe 6. Since high-hardness powder is prone to clumping, the design of connecting the connecting pipe 4 to the feed pipe 2 utilizes the air force generated by the fan 3 fixedly installed at one end of the feed pipe 2 to blow the powder coating in the feed box 5 into the feed pipe 2 through the connecting pipe 4. The air-powered conveying method can effectively break up some of the clumps and help the powder to be conveyed to the sieving mechanism. Compared with traditional gravity feeding, it can better cope with the characteristics of high-hardness powder and prevent blockage due to clumping during the feeding process. The feed pipe 2 is fixed on one side of the sieving box 1, providing a channel for the powder to enter the sieving mechanism inside the sieving box 1, ensuring that the powder coating can be accurately conveyed to the sieving position.

[0034] When the blower 3 blows the high-hardness powder coating into the feed pipe 2, the powder enters the rotating filter cylinder 7. A first gear 8 is fixedly sleeved on the outside of the filter cylinder 7, and a second gear 9 meshes with the top of the first gear 8. The motor 10 is fixed on one side of the sieve box 1, and the output end of the motor 10 is fixedly connected to the second gear 9. After the motor 10 starts, it drives the second gear 9 to rotate. The second gear 9 drives the filter cylinder 7 to rotate through meshing with the first gear 8. During the rotation, the high-hardness powder coating that meets the particle size requirements passes through the mesh of the filter cylinder 7 and falls into the bottom of the sieve box 1; while larger particles of powder remain inside the filter cylinder 7. When it is necessary to clean the large particles of high-hardness powder remaining inside the filter cylinder 7, the screw cap 17 can be rotated to open it for convenient cleaning, ensuring the continuous and efficient operation of the sieve mechanism.

[0035] As the filter cylinder 7 rotates, the brush plate 16 remains in contact with the surface of the filter cylinder 7 under the elastic action of the fixed spring 14. As the filter cylinder 7 rotates, the brush plate 16 continuously cleans its surface, brushing off the attached high-hardness powder to ensure that the mesh of the filter cylinder 7 is unobstructed. After sieving, the high-hardness powder coating that meets the particle size requirements falls into the bottom of the sieving box 1 and is discharged through the discharge pipe 11 fixedly connected to the bottom of the sieving box 1.

[0036] In conclusion, the above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A high-hardness powder coating sieving device, comprising a sieving box (1), characterized in that: A feeding mechanism is provided on one side of the sieve box (1), and a sieve mechanism is provided inside the sieve box (1); The feeding mechanism includes a feeding pipe (2), which is fixed on one side of the sieve box (1). A fan (3) is fixedly installed at one end of the feeding pipe (2). A connecting pipe (4) is fixedly connected to the top of the feeding pipe (2). A feed box (5) is fixedly connected to the top of the connecting pipe (4). An inlet pipe (6) is fixedly connected to the top of the feed box (5). The sieving mechanism includes a filter cylinder (7), which is installed at one end of the feed pipe (2). A first gear (8) is fixedly sleeved on the outside of the filter cylinder (7), and a second gear (9) meshes with the top of the first gear (8). A motor (10) is fixedly installed on one side of the sieving box (1), and a cleaning mechanism is provided between the sieving box (1) and the filter cylinder (7).

2. The high-hardness powder coating sieving device according to claim 1, characterized in that: The cleaning mechanism includes a fixed box (13), which is fixed to one side of the inner wall of the sieve box (1), and a fixed spring (14) is fixedly connected to the top of the inner wall of the fixed box (13).

3. The high-hardness powder coating sieving device according to claim 2, characterized in that: The bottom of the fixed spring (14) is fixedly connected to a movable rod (15), the bottom of which passes through the fixed box (13) and extends to the bottom of the fixed box (13).

4. The high-hardness powder coating sieving device according to claim 3, characterized in that: The movable rod (15) is rotatably connected to the fixed box (13), and a brush plate (16) is fixedly connected to the bottom of the movable rod (15).

5. The high-hardness powder coating sieving device according to claim 1, characterized in that: The bottom of the sieve box (1) is fixedly connected to a discharge pipe (11), and a valve (12) is installed inside the discharge pipe (11).

6. The high-hardness powder coating sieving device according to claim 1, characterized in that: The output end of the motor (10) is fixedly connected to the second gear (9). The filter cylinder (7) is rotatably connected to the feed pipe (2) and the sieve box (1). One end of the feed pipe (2) passes through the filter cylinder (7) and extends into the filter cylinder (7).

7. The high-hardness powder coating sieving device according to claim 1, characterized in that: The inner wall surface of the filter cylinder (7) is provided with threads, and the internal thread of the filter cylinder (7) is connected to a threaded cap (17).

8. The high-hardness powder coating sieving device according to claim 1, characterized in that: Both sides of the sieving box (1) are fixedly connected to support columns (18).

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