Multifunctional vibrating screen device for superfine metal powder machine

Abstract

The utility model belongs to metal powder screening technical field, concretely relates to a multifunctional vibrating screening device for superfine metal powder making machine, including base and vibration box, vibration box sets at the top of base, and is installed with first spring between base and vibration box, and the bottom of vibration box is installed with vibrating mechanism, vibrating mechanism includes motor bin, and the inside fixed of motor bin has vibration motor, and the middle part of vibration motor is provided with output shaft, and the top and bottom of output shaft are all installed with eccentric block, the inside of vibration box is provided with a plurality of mesh count different screen cloth, and the outside of vibration box and the height of every screen cloth are all installed with discharge gate, and the middle part in vibration box is installed with cleaning mechanism. The utility model can clean the bottom of screen cloth continuously when vibrating, reduces the possibility of screen cloth aperture blockage, and blows flowing air to the top of screen cloth continuously, increases the fluidity of powder under low amplitude, and increases screening efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of metal powder screening technology, specifically relating to a vibrating screening device for a multifunctional ultrafine metal powder making machine. Background Technology

[0002] In the metal powder preparation process, the sieving of ultrafine metal powders is a crucial step affecting product quality and production efficiency. Traditional vibrating sieving devices typically use a single vibrating motor to drive the screen to generate mechanical vibration, achieving classification through the inertial motion of particles. However, with increasingly stringent requirements for powder particle size distribution in industries such as powder metallurgy and 3D printing, ultrafine powders are highly susceptible to clogging of the screen holes due to electrostatic adsorption during sieving. Vibration alone is insufficient to effectively remove the clogged metal powder, requiring frequent shutdowns for manual cleaning. Furthermore, relying solely on mechanical vibration results in poor powder flowability and low sieving efficiency at low amplitudes, while increasing the amplitude leads to shortened equipment lifespan and energy waste. Utility Model Content

[0003] The purpose of this invention is to provide a multifunctional vibrating sieving device for an ultrafine metal powder mill. During vibration, it can continuously clean the bottom of the screen, reducing the possibility of screen pore blockage. At the same time, it continuously blows flowing air above the screen, increasing the flowability of the powder at low amplitude and increasing sieving efficiency.

[0004] The specific technical solution adopted by this utility model is as follows: A multifunctional ultrafine metal powder making machine vibrating screening device includes a base and a vibrating box. The vibrating box is set above the base, and a first spring is installed between the base and the vibrating box. A vibration mechanism is installed at the bottom of the vibrating box. The vibration mechanism includes a motor housing, inside which a vibration motor is fixed. An output shaft is provided in the middle of the vibration motor, and eccentric blocks are installed at the top and bottom of the output shaft. The vibrating box is equipped with several screens with different mesh sizes inside. A discharge port is installed on the outside of the vibrating box at the height of each screen. A cleaning mechanism is installed in the middle of the vibrating box, and the cleaning mechanism is driven by the vibrating mechanism. The cleaning mechanism includes a rotating rod, which is rotatably installed in the middle of the vibrating box. A cleaning plate is installed on the outside of the rotating rod and below each screen. A first cleaning brush is provided on both sides of the cleaning plate, and the top of the first cleaning brush is attached to the bottom of the screen.

[0005] Furthermore, a guide rail is provided on the outer side of the bottom of the screen, and one end of the cleaning plate is slidably connected to the guide rail.

[0006] Furthermore, an air chamber is provided in the middle of the rotating rod, the air inlet of the air chamber is located at the bottom of the rotating rod, an air blowing hole is provided in the middle of the cleaning plate, the air blowing hole is connected to the air chamber, and a number of air nozzles are evenly provided on the upper surface of the cleaning plate, the air nozzles are connected to the air blowing hole.

[0007] Furthermore, an air pump is installed at one end of the base, and a flexible air tube is installed at the output end of the air pump. A connecting sleeve is fixed at one end of the flexible air tube. The connecting sleeve is installed at the bottom of the motor compartment. The connecting sleeve is rotatably connected to the output shaft, and a through cavity is provided in the middle of the output shaft, and the cavity is connected to the air cavity of the rotating rod.

[0008] Furthermore, the top of the air nozzle is provided with a cap, and the bottom of the cap is fixed with a second spring, which passes through the air nozzle and is fixed inside the cleaning plate.

[0009] The technical effects achieved by this utility model are as follows: This invention effectively prevents fine metal powder from clogging the screen pores by continuously scraping the bottom of the screen with a cleaning plate that rotates synchronously with the output shaft and a first cleaning brush installed on it, thus effectively preventing the reduction in screening efficiency caused by pore blockage. This invention, through the air blowing holes set in the cleaning plate and the cover that automatically resets when the air stops, can continuously blow air above the screen during vibrating screening, causing the fine metal powder to float, increasing the shaking amplitude of the fine metal powder, and further accelerating the screening efficiency. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of one side of the present invention. Figure 3 This is a partial cross-sectional schematic diagram of the cleaning mechanism of this utility model; Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0011] The attached diagram lists the components represented by each number as follows: 1. Base; 2. Vibration mechanism; 3. Cleaning mechanism; 11. Vibration box; 12. First spring; 13. Discharge port; 14. Screen; 15. Guide rail; 21. Motor compartment; 22. Vibration motor; 23. Output shaft; 24. Eccentric block; 25. Connecting sleeve; 26. Flexible air tube; 27. Air pump; 31. Rotating rod; 32. Cleaning plate; 33. Air blowing hole; 34. Air nozzle; 35. Cover; 36. Second spring; 37. First cleaning brush; 38. Second cleaning brush. Detailed Implementation

[0012] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0013] like Figures 1 to 4 As shown, a multifunctional ultrafine metal powder making machine vibrating screening device includes a base 1 and a vibrating box 11. The vibrating box 11 is set above the base 1, and a first spring 12 is installed between the base 1 and the vibrating box 11. A vibration mechanism 2 is installed at the bottom of the vibrating box 11. The vibration mechanism 2 includes a motor compartment 21, inside which a vibration motor 22 is fixed. An output shaft 23 is provided in the middle of the vibration motor 22, and eccentric blocks 24 are installed at the top and bottom of the output shaft 23. The vibrating box 11 has several screens 14 with different mesh sizes inside. A discharge port 13 is installed on the outside of the vibrating box 11 at the height of each screen 14. A cleaning mechanism 3 is installed in the middle of the vibrating box 11. The cleaning mechanism 3 is driven by the vibrating mechanism 2. The cleaning mechanism 3 includes a rotating rod 31, which is rotatably installed in the middle of the vibrating box 11. A cleaning plate 32 is installed on the outside of the rotating rod 31 and below each screen 14. A first cleaning brush 37 is provided on both sides of the cleaning plate 32, and the top of the first cleaning brush 37 is in contact with the bottom of the screen 14. In the above process, when screening fine metal powder, the fine metal powder is fed into the vibrating box 11 from the top. The vibrating motor 22 is started to drive the eccentric block 24 to rotate, causing the vibrating box 11 to vibrate. This causes the fine metal powder to shake on the screen 14, achieving the purpose of screening the fine metal powder. At the same time, when the vibrating motor 22 drives the output shaft 23 to rotate, it will drive the rotating rod 31 connected to it to rotate as well. The first cleaning brush 37 set on the rotating rod 31 will continuously scrape the bottom of the screen 14, loosening the fine metal powder that is blocked in the pores of the screen 14, accelerating the screening efficiency, and reducing the probability of screen 14 clogging.

[0014] Furthermore, a guide rail 15 is provided on the outer side of the bottom of the screen 14, and one end of the cleaning plate 32 is slidably connected to the guide rail 15. As described above, the connection between the guide rail 15 and one end of the cleaning plate 32 is strengthened, ensuring that the first cleaning brush 37 on the cleaning plate 32 can continuously adhere to the lower surface of the screen 14.

[0015] Please refer to it again. Figure 3As shown, an air chamber is provided in the middle of the rotating rod 31, and the air inlet end of the air chamber is located at the bottom of the rotating rod 31. An air blowing hole 33 is provided in the middle of the cleaning plate 32, and the air blowing hole 33 is connected to the air chamber. Several air nozzles 34 are evenly arranged on the upper surface of the cleaning plate 32, and the air nozzles 34 are connected to the air blowing hole 33. In the above process, gas is introduced into the air inlet of the air chamber. The gas passes through the air chamber and enters the air blowing hole 33, and is blown out from each air nozzle 34. The air nozzle 34 is located at the bottom of the screen 14. The blown gas passes through the screen 14 and blows towards the fine metal particles above the screen 14. Combined with the shaking of the fine metal particles during vibration, the shaking amplitude of the fine metal powder can be increased, thereby accelerating the effect of vibration screening without increasing the vibration frequency.

[0016] Please refer to the following: Figure 2 , Figure 3 and Figure 4 As shown, an air pump 27 is installed at one end of the base 1, and a flexible air tube 26 is installed at the output end of the air pump 27. A connecting sleeve 25 is fixed at one end of the flexible air tube 26. The connecting sleeve 25 is installed at the bottom of the motor compartment 21. The connecting sleeve 25 is rotatably connected to the output shaft 23, and a through cavity is provided in the middle of the output shaft 23, and the cavity is connected to the air cavity of the rotating rod 31. As described above, during the screening process, external air is drawn in by the air pump 27, and the air is transported from the flexible air tube 26 to the cavity inside the output shaft 23, and then enters the air chamber from the cavity, and finally blown out from the eccentric block 24. It should be noted that a bearing is provided at the connection point between the connecting sleeve 25 and the bottom of the output shaft 23 to reduce friction generated by rotation and ensure the overall reliability under vibration.

[0017] Please refer to it again. Figure 4 As shown, the top of the air nozzle 34 is provided with a cover 35, the bottom of the cover 35 is fixed with a second spring 36, the second spring 36 passes through the air nozzle 34 and is fixed inside the cleaning plate 32, the top opening of the air nozzle 34 is provided with an inclined surface, the bottom of the cover 35 is provided with a cone shape, and the top of the cover 35 is provided with a second cleaning brush 38. The aforementioned cap 35 is used to block the air nozzle 34, preventing fine metal powder from falling into the eccentric block 24 during non-ventilation phases and causing air blowing failure. When air is blown again, the gas pushes the cap 35 upward and stretches the second spring 36. During this process, air is blown out from the gap between the air nozzle 34 and the cap 35, increasing the vibration amplitude of the fine metal powder on the screen 14. Since the opening of the air nozzle 34 is inclined and the bottom of the cap 35 is set as conical, the blown gas will flow upward at an angle, which can better blow up the fine metal powder on the screen 14. At the same time, the second cleaning brush 38 set above the cap 35 can scrape the bottom of the screen 14 when the cap 35 is blown up, further preventing the screen 14 from clogging. After the gas injection stops, the cap 35 will reset under the pull of the second spring 36 and block the air nozzle 34 again, preventing fine metal powder from entering.

[0018] The working principle of this utility model is as follows: Fine metal powder is fed into the vibrating box 11, and simultaneously the vibrating motor 22 is started, driving the output shaft 23 to rotate. This causes the rotating rod 31 connected to the output shaft 23 to rotate. Simultaneously, the rotation of the output shaft 23 drives the eccentric block 24 to rotate as well, causing the center of gravity of the vibrating box 11 to shift due to the rotation of the eccentric block 24. Through the soft connection of the first spring 12, the entire vibrating box 11 vibrates, allowing the fine metal powder on the screen 14 to pass through the mesh of the screen 14 under the action of vibration, thus completing the sieving. At the same time, the cleaning plate 32 rotates along with the rotating rod 31, and the first... The cleaning brush 37 continuously scrapes the bottom of the screen 14 to prevent the pores of the screen 14 from clogging and to speed up the screening efficiency. At the same time, the air pump 27 draws external air into the flexible air tube 26, injects it into the air chamber of the rotating rod 31 through the cavity of the output shaft 23, and blows it out from the air nozzle 34 through the air blowing hole 33. This causes the fine metal powder on the screen 14 to be suspended by the rising airflow, increasing the shaking amplitude of the fine metal powder during vibration, which will further increase the screening efficiency. After the air pump 27 stops drawing air, the cover 35 on the air nozzle 34 will seal the air nozzle 34 under the reset of the second spring 36 to prevent the fine metal powder from clogging the air nozzle 34.

[0019] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A vibrating sieving device for a multifunctional ultrafine metal powder making machine, characterized in that: Includes a base (1) and a vibration box (11), the vibration box (11) is disposed above the base (1), and a first spring (12) is installed between the base (1) and the vibration box (11), and a vibration mechanism (2) is installed at the bottom of the vibration box (11). The vibration mechanism (2) includes a motor compartment (21), inside which a vibration motor (22) is fixed. An output shaft (23) is provided in the middle of the vibration motor (22), and eccentric blocks (24) are installed at the top and bottom of the output shaft (23). The vibrating box (11) is equipped with several screens (14) with different mesh sizes. A discharge port (13) is installed on the outside of the vibrating box (11) at the height of each screen (14). A cleaning mechanism (3) is installed in the middle of the vibrating box (11). The cleaning mechanism (3) is driven by the vibrating mechanism (2). The cleaning mechanism (3) includes a rotating rod (31), which is rotatably installed in the middle of the vibrating box (11). A cleaning plate (32) is installed on the outside of the rotating rod (31) and below each screen (14). A first cleaning brush (37) is provided on both sides of the cleaning plate (32), and the top of the first cleaning brush (37) is in contact with the bottom of the screen (14).

2. The vibrating sieve device for a multifunctional ultrafine metal powder mill according to claim 1, characterized in that: The bottom outer side of the screen (14) is provided with a guide rail (15), and one end of the cleaning plate (32) is slidably connected to the guide rail (15).

3. The vibrating sieve device for a multifunctional ultrafine metal powder mill according to claim 1, characterized in that: An air chamber is provided in the middle of the rotating rod (31), and the air inlet end of the air chamber is located at the bottom of the rotating rod (31). An air blowing hole (33) is provided in the middle of the cleaning plate (32), and the air blowing hole (33) is connected to the air chamber. Several air nozzles (34) are evenly provided on the upper surface of the cleaning plate (32), and the air nozzles (34) are connected to the air blowing hole (33).

4. The vibrating sieve device for a multifunctional ultrafine metal powder mill according to claim 3, characterized in that: An air pump (27) is installed at one end of the base (1). A flexible air tube (26) is installed at the output end of the air pump (27). A connecting sleeve (25) is fixed at one end of the flexible air tube (26). The connecting sleeve (25) is installed at the bottom of the motor compartment (21). The connecting sleeve (25) is rotatably connected to the output shaft (23). A through cavity is provided in the middle of the output shaft (23), and the cavity is connected to the air cavity of the rotating rod (31).

5. The vibrating sieve device for a multifunctional ultrafine metal powder mill according to claim 3, characterized in that: The top of the air nozzle (34) is provided with a cover (35), and the bottom of the cover (35) is fixed with a second spring (36). The second spring (36) passes through the air nozzle (34) and is fixed inside the cleaning plate (32).

6. The vibrating sieve device for a multifunctional ultrafine metal powder mill according to claim 5, characterized in that: The top opening of the air nozzle (34) is provided with an inclined surface, the bottom of the cover (35) is provided with a cone shape, and the top of the cover (35) is provided with a second cleaning brush (38).

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