A screening device for powder coating production

Abstract

The utility model discloses a screening device for powder coating production relates to screening device technical field, aiming at the problem of the existing technology screen easy to be blocked because of material accumulation and the screened material easy to remain in the internal equipment, present and propose the following scheme, including the round tank, the bottom four corners of round tank all are equipped with the support subassembly of fixed installation, and support subassembly includes support cylinder, the support rod of plug -in activity in support cylinder top and set up between the telescopic spring of support cylinder inner bottom and support rod bottom, the annular outer wall one side bottom of round tank is inserted fixed with the discharge chute, and the bottom of round tank is inserted fixed with the discharge pipe. The utility model improves the screening stability and efficiency, and the screen frame is rotatably connected with the rotating ring in the screening assembly, cooperates servo motor drive rotating rod to drive conical block and screen frame rotation, makes material even dispersion under the centrifugal force effect, avoids local accumulation, prevents screen blockage, and significantly improves the screening efficiency.

Description

Technical Field

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

[0002] Sieving devices in powder coating production are key equipment used to screen powder particles and remove impurities during the powder coating production process. They classify powder coatings through sieves to ensure the uniformity and purity of the final product's particles, meeting the requirements of subsequent construction and use. In the powder coating production process, the sieving stage directly affects product quality; therefore, the performance stability and sieving efficiency of the sieving device are crucial.

[0003] Existing screening devices have many shortcomings in practical use: First, the screen is prone to clogging due to material accumulation, which leads to a decrease in screening efficiency and is inconvenient to clean and maintain. Secondly, the discharge structure of some devices is poorly designed, and the screened material is prone to remain inside the equipment, affecting subsequent use and cleaning. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a sieving device for powder coating production, which overcomes the deficiencies of existing technologies and effectively solves the problems of easy clogging of screens due to material accumulation and easy residue of screened materials inside the equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A sieving device for powder coating production includes a circular trough. Support assemblies are fixedly installed at the four corners of the bottom of the trough. Each support assembly includes a support cylinder, a support rod inserted into the top of the support cylinder, and a telescopic spring positioned between the bottom of the support cylinder and the bottom of the support rod. A discharge trough is fixedly inserted into the bottom of one side of the annular outer wall of the circular trough, and a discharge pipe is fixedly inserted into the bottom of the trough. A sieving assembly is positioned above the discharge pipe. The sieving assembly includes a screen frame, a screen mesh welded to the inner walls of the screen frame, a fixing rod welded at equal intervals to one end of the inner walls of the screen frame, a conical block welded to the end of the fixing rod away from the screen frame, and a rotating rod welded to the top of the conical block. A fixing frame is welded to one side of the top of the circular trough, and screw rods are rotatably connected to the inner walls of the upper and lower ends of the fixing frame. A connecting plate is screwed to the wall of the screw rod, and a conical hopper is welded to one end of the connecting plate.

[0006] Based on the feed rate and particle size requirements of the powder coating, the screw is adjusted by rotating the knob on the fixed frame, causing the connecting plate to lift the conical hopper to a suitable height. The servo motor is then started, and its output shaft drives the rotating rod to rotate. The rotating rod synchronously drives the conical block, the fixed rod, and the screen frame to rotate around the rotating ring as the fulcrum. The rotation of the screen frame generates centrifugal force. Then, the powder coating to be screened is fed into the conical hopper through the conveying equipment. The material falls onto the rotating conical block through the bottom discharge hole of the conical hopper. The conical surface of the conical block and the rotational action disperse the material in all directions, ensuring that the material falls evenly onto the screen within the screen frame. During the rotation of the screen frame, fine materials that meet the particle size requirements fall through the screen to the bottom of the circular trough and slide down the inclined surface into the discharge trough for discharge, completing the screening. Coarse materials that do not pass through the screen move towards the edge of the screen frame under the action of centrifugal force and are discharged through the gap between the screen frame opening and the inner wall of the circular trough, avoiding accumulation on the screen.

[0007] Preferably, the bottom of the circular groove is a sloping structure, and the bottom end of the sloping surface abuts against one end of the discharge trough.

[0008] Preferably, a rotating ring is rotatably connected to the top of the discharge pipe, and the top of the rotating ring abuts against the bottom of the screen frame.

[0009] Preferably, the end of the sieve frame away from the conical block has an opening, and a gap is left between the opening end of the sieve frame and the annular inner wall of the circular groove.

[0010] Preferably, the connecting plate and the fixed frame are in sliding fit, and the top of the lead screw is connected to a knob, and the bottom of the conical hopper is provided with a discharge hole, the inner diameter of which is larger than the outer diameter of the rotating rod.

[0011] Preferably, the top end of the rotating rod passes through the material drop hole and is rotatably connected to one end of the top of the fixed frame, and a servo motor is fixedly installed at one end of the top of the fixed frame, and the output shaft of the servo motor is connected and fixed to the top end of the rotating rod through a coupling.

[0012] The beneficial effects of this utility model are as follows: It improves screening stability and efficiency. The screen frame and rotating ring in the screening component are rotatably connected. With the help of the servo motor to drive the rotating rod, the conical block and screen frame rotate, so that the material is evenly dispersed under the action of centrifugal force, avoiding local accumulation, preventing screen blockage, and significantly improving screening efficiency. It enhances operational flexibility and applicability. The screw on the fixed frame works with the connecting plate, and the height of the conical bucket can be adjusted by the knob to adapt to different feed rates and material characteristics, ensuring that the material falls evenly on the screen. The gap between the screen frame opening and the inner wall of the circular groove facilitates the timely discharge of coarse material that has not passed through the screen, avoiding secondary pollution. In addition, the overall structure is highly detachable, making it convenient to clean and replace the screen and other components later, and has a wider range of applications. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a sieving device for powder coating production proposed in this utility model. Figure 2 This is a schematic diagram of the top structure of the discharge pipe of a sieving device for powder coating production proposed in this utility model; Figure 3 This is a schematic diagram of the sieving component structure of a sieving device for powder coating production proposed in this utility model; Figure 4 This is a schematic diagram of the fixed frame connection structure of a sieving device for powder coating production proposed in this utility model.

[0014] In the diagram: 1. Circular trough; 2. Support assembly; 3. Support cylinder; 4. Support rod; 5. Discharge trough; 6. Discharge pipe; 7. Rotating ring; 8. Screening assembly; 9. Screen frame; 10. Screen mesh; 11. Fixed rod; 12. Conical block; 13. Rotating rod; 14. Fixed frame; 15. Lead screw; 16. Connecting plate; 17. Conical hopper; 18. Servo motor. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0016] Reference Figure 1-4 A sieving device for powder coating production includes a circular trough 1. Support assemblies 2 are fixedly installed at each of the four corners of the bottom of the circular trough 1. Each support assembly 2 includes a support cylinder 3, a support rod 4 inserted into and movable within the top of the support cylinder 3, and a telescopic spring disposed between the bottom of the support cylinder 3 and the bottom of the support rod 4. A discharge trough 5 is inserted and fixedly installed at the bottom of one side of the annular outer wall of the circular trough 1. A discharge pipe 6 is inserted and fixedly installed at the bottom of the circular trough 1. A screening assembly 8 is disposed above the discharge pipe 6, and the screening assembly 8 includes a screen frame 9. A screen 10 is welded and fixed to the inner wall of the screen frame 9. A fixing rod 11 is welded and fixed at one end of the inner wall of the screen frame 9 at equal intervals. A conical block 12 is welded and fixed to the end of the fixing rod 11 away from the screen frame 9. A rotating rod 13 is welded and fixed to the top of the conical block 12. A fixing frame 14 is welded and fixed to one side of the top of the circular groove 1. A screw rod 15 is rotatably connected to the inner wall of the upper and lower ends of the fixing frame 14. A connecting plate 16 is screwed to the rod wall of the screw rod 15. A conical bucket 17 is welded and fixed to one end of the connecting plate 16. The bottom of the circular trough 1 is a sloping structure, with the bottom end of the sloping surface abutting against one end of the discharge trough 5. The circular trough 1 is a cylindrical structure with an open top, and the discharge trough 5 is inserted and fixed to one bottom side of its annular outer wall. The bottom of the circular trough 1 is designed with a sloping structure, with the bottom end of the sloping surface abutting against one end of the discharge trough 5, which facilitates the screening of fine materials to slide along the sloping surface into the discharge trough 5 for discharge. The top of the discharge pipe 6 is rotatably connected to a rotating ring 7, and the top of the rotating ring 7 abuts against the bottom of the screen frame 9. The discharge pipe 6, which is inserted and fixed at the center of the bottom of the circular trough 1, is used to discharge impurities or residual materials that may be deposited at the bottom of the circular trough 1; the rotating ring 7, which is rotatably connected to the top of the discharge pipe 6, has its outer ring in contact with the bottom edge of the screen frame 9. The rotating ring 7 can rotate synchronously with the screen frame 9, which not only ensures the smooth rotation of the screen frame 9, but also provides stable support for the screen frame 9 and prevents the screen frame 9 from shifting during rotation. An opening is provided at the end of the screen frame 9 away from the conical block 12, and a gap is left between the opening end of the screen frame 9 and the annular inner wall of the circular groove 1. The connecting plate 16 and the fixed frame 14 form a sliding fit. A knob is connected to the top of the screw 15. A discharge hole is provided at the bottom of the conical hopper 17, and the inner diameter of the discharge hole is larger than the outer diameter of the rotating rod 13. The fixed frame 14 has an L-shaped structure and is welded and fixed to one side of the top of the circular groove 1. The screw 15, which is rotatably connected to the inner walls of its upper and lower ends, is set vertically. The knob connected to the top of the screw 15 is convenient for manual adjustment. The connecting plate 16, which is screwed to the wall of the screw 15, slides in fit with the fixed frame 14 to ensure that the connecting plate rises and falls vertically along the fixed frame 14 when the screw 15 rotates. The conical hopper 17 welded to one end of the connecting plate 16 is used to receive external feed. The inner diameter of the discharge hole at the bottom of the conical hopper 17 is larger than the outer diameter of the rotating rod 13 to avoid interference with the rotating rod 13. The falling speed and drop point of the material can be controlled by adjusting the height of the conical hopper 17. The top end of the rotating rod 13 passes through the material discharge hole and is rotatably connected to one end of the top of the fixed frame 14. A servo motor 18 is fixedly installed at one end of the top of the fixed frame 14. The output shaft of the servo motor 18 is connected and fixedly connected to the top end of the rotating rod 13 through a coupling. The top end of the rotating rod 13 passes through the material discharge hole of the conical hopper 17 and is rotatably connected to one end of the top of the fixed frame 14. The output shaft of the servo motor 18 installed at the top of the fixed frame 14 is connected to the top end of the rotating rod 13 through a coupling. When the servo motor 18 is working, it can drive the rotating rod 13 to drive the conical block 12, the fixed rod 13 and the screen frame 9 to rotate around the rotating ring 7 as the fulcrum. The rotation speed can be adjusted by the servo motor 18 controller, usually set to 30-60 revolutions per minute to ensure that the material is fully dispersed and screened.

[0017] Working principle: First, according to the feed rate and particle size requirements of the powder coating, the screw 15 is adjusted by rotating the knob on the fixed frame 14, so that the connecting plate 16 drives the conical bucket 17 to rise and fall to a suitable height. The servo motor 18 is started, and the output shaft of the servo motor 18 drives the rotating rod 13 to rotate. The rotating rod 13 synchronously drives the conical block 12, the fixed rod 11 and the screen frame 9 to rotate around the rotating ring 7 as the fulcrum. When the screen frame 9 rotates, centrifugal force is generated. Next, the powder coating to be screened is fed into the conical hopper 17 through a conveying device. The material falls onto the rotating conical block 12 through the bottom discharge hole of the conical hopper 17. The conical surface of the conical block 12 and the rotation action disperse the material in all directions, so that the material falls evenly onto the screen 10 inside the screen frame 9. During the rotation of the screen frame 9, the fine material that meets the particle size requirements falls through the screen 10 to the bottom of the circular trough 1 and slides into the discharge trough 5 along the inclined surface to be discharged, thus completing the screening. The coarse material that does not pass through the screen 10 moves towards the edge of the screen frame 9 under the action of centrifugal force and is discharged through the gap between the opening of the screen frame 9 and the inner wall of the circular trough 1, thus avoiding accumulation on the screen 10.

[0018] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sieving device for powder coating production, comprising a circular trough (1), characterized in that, The bottom four corners of the circular trough (1) are all fixed with support components (2), and the support components (2) include a support cylinder (3), a support rod (4) inserted into the top of the support cylinder (3) and movable inside the support cylinder (3), and a telescopic spring set between the bottom of the support cylinder (3) and the bottom of the support rod (4). A discharge trough (5) is inserted and fixed to the bottom of one side of the annular outer wall of the circular trough (1), and a discharge pipe (6) is inserted and fixed to the bottom of the circular trough (1). A screening component (8) is set above the discharge pipe (6), and the screening component (8) includes a screen frame (9) and is welded and fixed to the screen frame (9). The screen (10) is welded to the inner wall of the screen frame (9) at equal intervals, the fixed rod (11) is welded to one end of the inner wall of the screen frame (9), the conical block (12) is welded to the fixed rod (11) away from the screen frame (9), and the rotating rod (13) is welded to the top of the conical block (12). A fixed frame (14) is welded to one side of the top of the circular groove (1), and the upper and lower ends of the fixed frame (14) are rotatably connected to the inner walls of the screw rod (15). The rod wall of the screw rod (15) is screwed to the connecting plate (16), and a conical bucket (17) is welded to one end of the connecting plate (16).

2. The sieving device for powder coating production according to claim 1, characterized in that, The bottom of the circular groove (1) is a sloping structure, and the bottom end of the sloping surface abuts against one end of the discharge groove (5).

3. A sieving device for powder coating production according to claim 1, characterized in that, The top of the discharge pipe (6) is rotatably connected to a rotating ring (7), and the top of the rotating ring (7) abuts against the bottom of the screen frame (9).

4. A sieving device for powder coating production according to claim 1, characterized in that, The sieve frame (9) has an opening at one end away from the conical block (12), and there is a gap between the opening end of the sieve frame (9) and the annular inner wall of the circular groove (1).

5. A sieving device for powder coating production according to claim 1, characterized in that, The connecting plate (16) and the fixed frame (14) form a sliding fit, and the top of the screw (15) is connected to a knob. The bottom of the conical bucket (17) is provided with a discharge hole, and the inner diameter of the discharge hole is larger than the outer diameter of the rotating rod (13).

6. A sieving device for powder coating production according to claim 5, characterized in that, The top end of the rotating rod (13) passes through the material drop hole and is rotatably connected to the top end of the fixed frame (14). A servo motor (18) is installed and fixed at the top end of the fixed frame (14). The output shaft of the servo motor (18) is connected and fixed to the top end of the rotating rod (13) through a coupling.

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