Cobalt-based alloy powder production device for cemented carbide and method of manufacturing the same

Abstract

The application discloses a cobalt-based alloy powder production device for hard alloy and a preparation method thereof, relates to the technical field of alloy powder production, and comprises a smelting furnace, an air-atomization reaction furnace connected with the smelting furnace, and a grinding and screening device connected with the air-atomization reaction furnace. The grinding and screening device comprises a box body, a rotating groove is arranged on the side wall of the box body, a door plate is fixed to the outside of the rotating groove, a rotating frame is arranged in the rotating groove, a plurality of device grooves are arranged in the inner wall of the rotating frame in a penetrating mode, the device grooves are arranged at equal intervals along the circumference of the rotating frame, and a screening mechanism is arranged on the inner wall of each device groove. The cobalt-based alloy particles can be automatically recycled and ground, the closed-loop circulation design can realize sufficient grinding, the grinding efficiency is greatly improved, the screening efficiency of the cobalt-based alloy particles is effectively improved, and the problem that the screen plate is easily blocked is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of alloy powder production technology, and in particular to a cobalt-based alloy powder production apparatus and preparation method for cemented carbide. Background Technology

[0002] Cemented carbide is an alloy material prepared by powder metallurgy from hard compounds of refractory metals and a binder metal. Its outstanding characteristics include high hardness, high strength, good wear resistance, and a certain degree of toughness. It is widely used as a material for cutting tools, molds, wear-resistant materials, and mining tools. Cobalt-based alloy powder is an important raw material for cemented carbide production, and its quality has a significant impact on the overall quality of the cemented carbide.

[0003] In the production of cobalt-based alloy powder for cemented carbide, traditional processes typically employ multi-stage equipment (usually including a melting furnace, a gas atomization reactor, and grinding equipment) to complete the melting of metal raw materials (which typically include cobalt, iron, tungsten, chromium, etc.), atomization granulation, and grinding. However, currently, fixed screens are often used to sieve the ground cobalt-based alloy particles after grinding. This is prone to clogging due to particle jamming, affecting sieving performance and resulting in relatively low sieving efficiency. Furthermore, substandard particles cannot automatically return to the grinding area and require external conveying devices for recycling, complicating the process, increasing energy consumption, and easily introducing impurities during transport, affecting the purity of the cobalt-based alloy powder.

[0004] Therefore, it is necessary to design a cobalt-based alloy powder production device and its preparation method for cemented carbide. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cobalt-based alloy powder production apparatus and preparation method for cemented carbide.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cobalt-based alloy powder production apparatus for cemented carbide includes a melting furnace, a gas atomization reactor connected to the melting furnace, and a grinding and screening device connected to the gas atomization reactor. The grinding and screening device includes a housing with a rotating groove on its side wall. A door panel located outside the rotating groove is fixed to the side wall of the housing. A rotating frame is provided inside the rotating groove. Multiple device slots are provided through the inner wall of the rotating frame. The multiple device slots are arranged at equal intervals along the circumference of the rotating frame. A screening mechanism is provided on the inner wall of each device slot. Multiple partitions are fixed to the inner wall of the rotating frame. The multiple partitions are arranged at equal intervals along the circumference of the rotating frame, and each partition is located between adjacent device slots. A rotating pipe fixedly connected to the rotating frame is provided through the center of the side wall of the rotating frame. The rotating pipe passes through the inner wall of the rotating groove and extends to the outside of the housing. A grinding mechanism is provided inside the rotating frame. A driving mechanism is provided on the outer wall of the housing. The driving mechanism is connected to the grinding mechanism and the rotating pipe.

[0008] As a further improvement of the present invention, the grinding machine mechanism includes a grinding sleeve disposed inside the rotating frame. Arc-shaped baffles are fixed on both side walls of the grinding sleeve, and the arc-shaped baffles fit against the inner wall of the rotating frame. A feed inlet is provided on the side wall of the grinding sleeve, and a feed pipe is connected inside the feed inlet. The end of the feed pipe away from the grinding sleeve passes through a door panel and connects to the gas atomization reactor. The grinding sleeve is fixedly connected to the inner wall of the door panel. A grinding block is disposed inside the grinding sleeve. An installation cavity is provided inside the grinding sleeve. A second rotating shaft is rotatably connected to the inner bottom wall of the installation cavity. The upper end of the second rotating shaft passes through the inner top wall of the installation cavity and is fixedly connected to the lower end of the grinding block. A fourth gear is fixedly sleeved on the side wall of the second rotating shaft. A first rotating shaft, rotatably connected to the grinding sleeve, passes through the side wall of the grinding sleeve. One end of the first rotating shaft is located inside the installation cavity and fixedly fitted with a fifth gear. The fifth gear meshes with the fourth gear. The other end of the first rotating shaft passes through a rotating tube and extends to the outside of the housing.

[0009] As a further improvement of the present invention, the driving mechanism includes a fixed frame fixed on the outer wall of the housing, a power motor mounted on the side wall of the fixed frame, the output shaft of the power motor passing through the fixed frame and fixedly connected to the end of the first rotating shaft, a third gear fixedly sleeved on the side wall of the first rotating shaft, a second gear rotatably connected on the inner top wall of the fixed frame, a first gear fixedly sleeved on the side wall of the rotating tube, and the upper and lower sides of the second gear meshing with the first gear and the third gear respectively.

[0010] As a further improvement of the present invention, the screening mechanism includes a screen plate disposed inside the device groove, and two guide rods slidably connected to the screen plate are provided through the screen plate. Both ends of the guide rods are fixed to the inner wall of the device groove, and two springs are fitted on the guide rods, with the two springs located on both sides of the screen plate respectively.

[0011] As a further improvement of the present invention, a magnetic shielding plate is fixed on the side wall of the screen plate, the magnetic shielding plate extends out of the device groove and is fixed with an adsorption plate, a swing rod is rotatably mounted on the outer side wall of the rotating tube, a magnetic block that cooperates with the adsorption plate is fixed at the lower end of the swing rod, a movable groove is provided through the lower part of the inner wall of the rotating groove, the magnetic block is located inside the movable groove, a rotating column is rotatably connected to the side wall of the fixed frame, a toothed column is fixed at the end of the rotating column away from the fixed frame, a swivel groove is provided on the side wall of the swing rod, the toothed column is located inside the swivel groove, a second synchronous pulley is fixedly sleeved on the side wall of the rotating column, a first synchronous pulley is fixedly sleeved on the side wall of the first rotating shaft, and the first synchronous pulley and the second synchronous pulley are sleeved by a synchronous belt.

[0012] As a further improvement of the present invention, a flexible connecting diaphragm is fixed at the surface edge of the screen plate, and the side of the flexible connecting diaphragm away from the screen plate is fixed to the inner wall of the device groove.

[0013] As a further improvement of the present invention, the bottom of the box is provided with a discharge trough communicating with the rotating groove, and the bottom of the box is fixed with a discharge pipe corresponding to the discharge trough.

[0014] As a further improvement of the present invention, support legs are fixed at the four corners of the bottom of the box.

[0015] A method for producing cobalt-based alloy powder for cemented carbide, using the aforementioned cobalt-based alloy powder production apparatus, includes the following steps:

[0016] S1, Take the metal raw material of the cobalt-based alloy powder, add the metal raw material to the melting furnace and melt it completely to obtain the molten metal;

[0017] S2, the metal solution in S1 is introduced into a gas atomizing reactor for atomization and cooling treatment to obtain cobalt-based alloy particles;

[0018] S3, the cobalt-based alloy powder obtained in S2 is introduced into the grinding and screening equipment through the feed pipe, and the cobalt-based alloy particles are ground and screened by the grinding and screening equipment to obtain the cobalt-based alloy powder, and the cobalt-based alloy powder is discharged through the discharge pipe.

[0019] The beneficial effects of this invention are:

[0020] The cobalt-based alloy particles are sieved through a screen plate. Particles that do not meet the fineness requirements are retained by the screen plate and can be carried back to the grinding sleeve for further grinding by the rotation of the rotating frame. This ensures that the cobalt-based alloy powder after grinding and sieving meets the required fineness. By utilizing the rotation of the rotating frame, a stable return cycle is formed, which can automatically complete the cyclic grinding process of cobalt-based alloy particles. This closed-loop cycle design can achieve thorough grinding and greatly improve the grinding efficiency.

[0021] By utilizing the magnetic attraction between the magnetic block and the adsorption plate, the magnetic block can drive the adsorption plate to move back and forth when it moves back and forth. This, in turn, drives the screen plate to move back and forth through the magnetic shielding plate. As a result, while the rotating frame drives the screen plate to rotate circumferentially, it can still drive the screen plate to vibrate back and forth. The high-frequency vibration generated by the screen plate effectively improves the screening efficiency of cobalt-based alloy particles, while greatly reducing the problem of screen plate clogging. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the cobalt-based alloy powder production apparatus for cemented carbide of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the box body, rotating trough, movable trough, discharge trough, and discharge pipe of the present invention.

[0024] Figure 3 This is a schematic diagram of the rotating frame, screen plate, rotating tube, and driving mechanism of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the rotating frame, device groove, grinding sleeve, feed port, partition, and arc baffle of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the screening mechanism, magnetic shielding plate, adsorption plate, magnetic block, swing rod, and groove of the present invention;

[0027] Figure 6 This is a schematic cross-sectional view of the internal structure of the grinding sleeve of the present invention;

[0028] Figure 7 This is a schematic diagram of the rotating post and tooth post of the present invention.

[0029] In the diagram: 1. Smelting furnace, 2. Gas atomization reactor, 3. Grinding and screening equipment, 4. Box body, 5. Door panel, 6. Feed pipe, 7. Discharge pipe, 8. Support leg, 9. Rotary trough, 10. Discharge trough, 11. Movable trough, 12. Feed port, 13. Rotating frame, 14. Screen plate, 15. Rotating pipe, 16. First gear, 17. Second gear, 18. Third gear, 19. Power motor, 20. First synchronous pulley, 21. First rotating shaft, 22. Synchronous belt, 23. Second synchronous pulley, 24. Fixed frame, 25. Rotating column, 26. Swinging rod, 27. Device slot, 28. Partition plate, 29. Grinding sleeve, 30. Arc baffle, 31. Guide rod, 32. Spring, 33. Magnetic shielding plate, 34. Adsorption plate, 35. Magnetic block, 36. Slot, 37. Grinding block, 38. Mounting cavity, 39. Second rotating shaft, 40. Fourth gear, 41. Fifth gear, 42. Tooth column, 43. Flexible connecting diaphragm. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Reference Figures 1-7 A cobalt-based alloy powder production apparatus for cemented carbide includes a melting furnace 1, a gas atomizing reactor 2 connected to the melting furnace 1, and a grinding and screening device 3 connected to the gas atomizing reactor 2. Support legs 8 are fixed at the four corners of the bottom of a housing 4 to support the housing 4 and maintain its stability. The grinding and screening device 3 includes a housing 4, a rotating trough 9 on the side wall of the housing 4, a discharge trough 10 communicating with the rotating trough 9 at the bottom of the housing 4, a discharge pipe 7 corresponding to the discharge trough 10 fixed at the bottom of the housing 4, a door panel 5 located outside the rotating trough 9 fixed on the side wall of the housing 4, and a rotating frame 13 inside the rotating trough 9. The inner wall of the rotating frame 13... Multiple device slots 27 are provided through the upper part of the rotating frame 13. The multiple device slots 27 are equally spaced along the circumference of the rotating frame 13. Each device slot 27 has a screening mechanism on its inner wall. Multiple partitions 28 are fixed on the inner wall of the rotating frame 13. The multiple partitions 28 are equally spaced along the circumference of the rotating frame 13, and each partition 28 is located between adjacent device slots 27. A rotating tube 15 is provided through the center of the side wall of the rotating frame 13 and is fixedly connected to the rotating frame 13. The rotating tube 15 passes through the inner wall of the rotating slot 9 and extends to the outside of the box 4. A grinding mechanism is provided on the inner side of the rotating frame 13. A driving mechanism is provided on the outer wall of the box 4. The driving mechanism is connected to the grinding mechanism and the rotating tube 15.

[0032] The grinding machine mechanism includes a grinding sleeve 29 disposed inside the rotating frame 13. Arc-shaped baffles 30 are fixed to both side walls of the grinding sleeve 29, and these baffles 30 are in contact with the inner wall of the rotating frame 13, maintaining constant contact to prevent leakage of cobalt-based alloy particles. An inlet 12 is provided on the side wall of the grinding sleeve 29, and an inlet pipe 6 is connected inside the inlet 12. The end of the inlet pipe 6 away from the grinding sleeve 29 passes through the door panel 5 and connects to the gas atomizing reactor 2. The grinding sleeve 29 is fixedly connected to the inner wall of the door panel 5. Grinding blocks 37 are disposed inside the grinding sleeve 29, and an installation cavity 3 is also provided inside the grinding sleeve 29. 8. A second rotating shaft 39 is rotatably connected to the inner bottom wall of the mounting cavity 38. The upper end of the second rotating shaft 39 passes through the inner top wall of the mounting cavity 38 and is fixedly connected to the lower end of the grinding block 37. A fourth gear 40 is fixedly sleeved on the side wall of the second rotating shaft 39. A first rotating shaft 21 is rotatably connected to the grinding sleeve 29 through the side wall of the grinding sleeve 29. The first rotating shaft 21 and the grinding sleeve 29 are rotatably connected by a bearing. One end of the first rotating shaft 21 is located inside the mounting cavity 38 and is fixed with a fifth gear 41. The fifth gear 41 meshes with the fourth gear 40. The other end of the first rotating shaft 21 passes through the rotating tube 15 and extends to the outside of the housing 4.

[0033] The drive mechanism includes a fixed frame 24 fixed to the outer wall of the housing 4. A power motor 19 is installed on the side wall of the fixed frame 24. The output shaft of the power motor 19 passes through the fixed frame 24 and is fixedly connected to the end of the first rotating shaft 21. A third gear 18 is fixedly sleeved on the side wall of the first rotating shaft 21. A second gear 17 is rotatably connected to the inner top wall of the fixed frame 24. A first gear 16 is fixedly sleeved on the side wall of the rotating tube 15. The upper and lower sides of the second gear 17 mesh with the first gear 16 and the third gear 18, respectively. The diameter of the third gear 18 is much smaller than the diameter of the first gear 16 and the second gear 17. Thus, when the first rotating shaft 21 drives the grinding block 37 to rotate at a relatively fast speed, the rotating tube 15 drives the rotating frame 13 to rotate at a relatively slower speed, thereby enabling the screen plate 14 to perform full screening.

[0034] The screening mechanism includes a screen plate 14 disposed inside the device trough 27. A flexible connecting diaphragm 43 is fixed at the surface edge of the screen plate 14. The side of the flexible connecting diaphragm 43 away from the screen plate 14 is fixed to the inner wall of the device trough 27. The flexible connecting diaphragm 43 is made of fluororubber, which has excellent high temperature resistance. Its flexibility does not restrict the movement of the screen plate 14, thereby preventing particles from leaking out from the gap between the screen plate 14 and the device trough 27. Two guide rods 31 are slidably connected to the screen plate 14. Both ends of the guide rods 31 are fixed to the inner wall of the device trough 27. Two springs 32 are fitted on the guide rods 31, and the two springs 32 are located on both sides of the screen plate 14.

[0035] A magnetic shielding plate 33 is fixed to the side wall of the screen plate 14. The magnetic shielding plate 33 extends out of the device groove 27 and is fixed with an adsorption plate 34. A swing rod 26 is rotatably mounted on the outer side wall of the rotating tube 15. A magnetic block 35 that cooperates with the adsorption plate 34 is fixed to the lower end of the swing rod 26. The magnetic shielding plate 33 can block the influence of the magnetic block 35 on the interior of the rotating frame 13. A movable groove 11 is provided through the lower part of the inner wall of the rotating groove 9. The magnetic block 35 is located inside the movable groove 11. Utilizing the magnetic adsorption effect between the magnetic block 35 and the adsorption plate 34, the magnetic block 35 can drive the adsorption plate 34 to move back and forth when it moves back and forth, and then drive the screen plate 14 to move back and forth through the magnetic shielding plate 33. This allows the screen plate 14 to reciprocate and vibrate simultaneously while the rotating frame 13 drives the screen plate 14 to rotate circumferentially. A rotating column 25 is rotatably connected to the side wall of the fixed frame 24. A toothed column 42 is fixed to the end of the rotating column 25 away from the fixed frame 24. A groove 36 is provided on the side wall of the swing rod 26. The toothed column 42 is located inside the groove 36. The toothed column 42 has a cylindrical structure and slides inside the groove 36. A second synchronous wheel 23 is fixedly sleeved on the side wall of the rotating column 25. A first synchronous wheel 20 is fixedly sleeved on the side wall of the first rotating shaft 21. The first synchronous wheel 20 and the second synchronous wheel 23 are sleeved together by a synchronous belt 22.

[0036] When using the cobalt-based alloy powder production apparatus for cemented carbide of the present invention, the operator starts the power motor 19 on the fixed frame 24. The output shaft of the power motor 19 drives the first rotating shaft 21 to rotate. Through the transmission of the fourth gear 40 and the fifth gear 41, the second rotating shaft 39 can be driven to rotate, and the grinding block 37 is driven to rotate through the second rotating shaft 39.

[0037] The first gear 16, the third gear 18 and the second gear 17 are meshed and driven to further drive the rotating tube 15 to rotate, and the rotating tube 15 drives the rotating frame 13 to rotate in the rotating groove 9.

[0038] The cobalt-based alloy particles produced by the gas atomization reactor 2 enter the grinding sleeve 29 through the feed pipe 6. The cobalt-based alloy particles are finely ground by the cooperation of the grinding block 37 and the grinding sleeve 29, and ground into cobalt-based alloy powder. The ground cobalt-based alloy powder falls into the rotating frame 13. When the cobalt-based alloy powder falls onto the screen plate 14 in the device trough 27, the cobalt-based alloy powder is screened by the screen plate 14. The cobalt-based alloy powder with qualified particle size passes through the screen plate 14 and enters the discharge trough 10, and is discharged through the discharge pipe 7. The cobalt-based alloy particles that are not sufficiently ground are trapped on the surface of the screen plate 14.

[0039] Furthermore, when the first rotating shaft 21 rotates, it can drive the rotating column 25 to rotate the toothed column 42 through the transmission of the first synchronous pulley 20, the synchronous belt 22 and the second synchronous pulley 23. The toothed column 42 periodically moves the groove 36 on the swing rod 26, causing the swing rod 26 to swing back and forth around the rotating tube 15, which drives the magnetic block 35 at the lower end of the swing rod 26 to move back and forth in the movable groove 11. Due to the magnetic adsorption effect between the magnetic block 35 and the adsorption plate 34, the magnetic block 35 can drive the adsorption plate 34 to move back and forth when it moves back and forth. Through the magnetic isolation plate 33, the screen plate 14 can be driven to vibrate along the axial direction of the guide rod 31. With the compression and extension of the spring 32, the screen plate 14 can generate reciprocating vibration, which can effectively improve the screening effect of the screen plate 14 on cobalt-based alloy particles, and prevent the screen plate 14 from clogging, thus maintaining good screening efficiency.

[0040] The cobalt-based alloy particles trapped on the surface of the screen plate 14 are carried to the top of the grinding sleeve 29 as the rotating frame 13 rotates, and re-enter the grinding sleeve 29 for secondary grinding under the action of gravity.

[0041] A method for producing cobalt-based alloy powder for cemented carbide, using a cobalt-based alloy powder production apparatus for cemented carbide, includes the following steps:

[0042] S1, take the metal raw material of cobalt-based alloy powder, add the metal raw material into the melting furnace 1 and melt it completely to obtain the molten metal;

[0043] S2, the metal solution in S1 is introduced into the gas atomizing reactor 2 for atomization and cooling treatment to obtain cobalt-based alloy particles;

[0044] S3, the cobalt-based alloy powder obtained in S2 is introduced into the grinding and screening equipment 3 through the feed pipe 6. The cobalt-based alloy particles are ground and screened by the grinding and screening equipment 3 to obtain cobalt-based alloy powder, and then discharged through the discharge pipe 7.

[0045] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A production apparatus for cobalt-based alloy powder for cemented carbide, comprising a melting furnace (1) and a gas atomizing reactor (2) connected to the melting furnace (1), characterized in that, It also includes a grinding and screening device (3) connected to the gas atomizing reactor (2). The grinding and screening device (3) includes a housing (4). A rotating groove (9) is provided on the side wall of the housing (4). A door panel (5) located outside the rotating groove (9) is fixed on the side wall of the housing (4). A rotating frame (13) is provided inside the rotating groove (9). Multiple device slots (27) are provided through the inner wall of the rotating frame (13). The multiple device slots (27) are equally spaced along the circumference of the rotating frame (13). A screening mechanism is provided on the inner wall of each device slot (27). The rotating frame ( Multiple partitions (28) are fixed on the inner wall of the rotating frame (13). The multiple partitions (28) are evenly spaced along the circumference of the rotating frame (13), and each partition (28) is located between adjacent device slots (27). A rotating tube (15) is fixedly connected to the rotating frame (13) through the center of the side wall of the rotating frame (13). The rotating tube (15) penetrates the inner wall of the rotating slot (9) and extends to the outside of the box (4). A grinding mechanism is provided on the inner side of the rotating frame (13). A driving mechanism is provided on the outer wall of the box (4). The driving mechanism is connected to the grinding mechanism and the rotating tube (15). The grinding machine mechanism includes a grinding sleeve (29) disposed inside the rotating frame (13). Arc-shaped baffles (30) are fixed on both sides of the grinding sleeve (29). The arc-shaped baffles (30) fit against the inner wall of the rotating frame (13). A feed inlet (12) is provided on the side wall of the grinding sleeve (29). A feed pipe (6) is connected inside the feed inlet (12). The end of the feed pipe (6) away from the grinding sleeve (29) passes through the door panel (5) and is connected to the gas atomizing reactor (2). The grinding sleeve (29) is fixedly connected to the inner wall of the door panel (5). A grinding block (37) is provided inside the grinding sleeve (29). An installation cavity (38) is provided inside the grinding sleeve (29). A second rotating shaft (39) is rotatably connected to the inner bottom wall of the mounting cavity (38). The upper end of the second rotating shaft (39) passes through the inner top wall of the mounting cavity (38) and is fixedly connected to the lower end of the grinding block (37). A fourth gear (40) is fixedly sleeved on the side wall of the second rotating shaft (39). A first rotating shaft (21) rotatably connected to the grinding sleeve (29) is provided through the side wall of the grinding sleeve (29). One end of the first rotating shaft (21) is located inside the mounting cavity (38) and a fifth gear (41) is fixed thereon. The fifth gear (41) meshes with the fourth gear (40). The other end of the first rotating shaft (21) passes through the rotating tube (15) and extends to the outside of the box body (4). The drive mechanism includes a fixed frame (24) fixed on the outer wall of the housing (4), a power motor (19) is installed on the side wall of the fixed frame (24), the output shaft of the power motor (19) passes through the fixed frame (24) and is fixedly connected to the end of the first rotating shaft (21), a third gear (18) is fixedly sleeved on the side wall of the first rotating shaft (21), a second gear (17) is rotatably connected on the inner top wall of the fixed frame (24), a first gear (16) is fixedly sleeved on the side wall of the rotating tube (15), and the upper and lower sides of the second gear (17) mesh with the first gear (16) and the third gear (18) respectively. The screening mechanism includes a screen plate (14) disposed inside the device groove (27). Two guide rods (31) slidably connected to the screen plate (14) are provided through the screen plate (14). Both ends of the guide rods (31) are fixed to the inner wall of the device groove (27). Two springs (32) are fitted on the guide rods (31). The two springs (32) are located on both sides of the screen plate (14). A magnetic shielding plate (33) is fixed on the side wall of the screen plate (14). The magnetic shielding plate (33) extends out of the device groove (27) and is fixed with an adsorption plate (34). A swing rod (26) is rotatably mounted on the outer side wall of the rotating tube (15). A magnetic block (35) that cooperates with the adsorption plate (34) is fixed at the lower end of the swing rod (26). A movable groove (11) is provided through the lower part of the inner wall of the rotating groove (9). The magnetic block (35) is located inside the movable groove (11). The side wall of the fixing frame (24) is... A rotating column (25) is rotatably connected. A toothed column (42) is fixed at one end of the rotating column (25) away from the fixed frame (24). A groove (36) is provided on the side wall of the swing rod (26). The toothed column (42) is located inside the groove (36). A second synchronous pulley (23) is fixedly sleeved on the side wall of the rotating column (25). A first synchronous pulley (20) is fixedly sleeved on the side wall of the first rotating shaft (21). The first synchronous pulley (20) and the second synchronous pulley (23) are sleeved through a synchronous belt (22).

2. The apparatus for producing cobalt-based alloy powder for cemented carbide according to claim 1, characterized in that, A flexible connecting diaphragm (43) is fixed at the surface edge of the screen plate (14), and the side of the flexible connecting diaphragm (43) away from the screen plate (14) is fixed on the inner wall of the device groove (27).

3. The apparatus for producing cobalt-based alloy powder for cemented carbide according to claim 1, characterized in that, The bottom of the box (4) is provided with a discharge trough (10) that communicates with the rotating trough (9), and the bottom of the box (4) is fixed with a discharge pipe (7) corresponding to the discharge trough (10).

4. The apparatus for producing cobalt-based alloy powder for cemented carbide according to claim 1, characterized in that, The box (4) is fixed with support legs (8) at the four corners of its bottom.

5. A method for producing cobalt-based alloy powder for cemented carbide, characterized in that, Using the cobalt-based alloy powder production apparatus for cemented carbides as described in any one of claims 1-4, the method includes the following steps: S1, take the metal raw material of the cobalt-based alloy powder, add the metal raw material into the melting furnace (1) and melt it completely to obtain the molten metal; S2, the metal solution in S1 is introduced into the gas atomization reactor (2) for atomization and cooling treatment to obtain cobalt-based alloy particles; S3, the cobalt-based alloy powder obtained in S2 is introduced into the grinding and screening equipment (3) through the feed pipe (6), and the cobalt-based alloy particles are ground and screened by the grinding and screening equipment (3) to obtain the cobalt-based alloy powder, and the cobalt-based alloy powder is discharged through the discharge pipe (7).

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