A ball mill for tungsten carbide powder with a vibrating screen breaker

Abstract

This invention discloses a ball mill for crushing tungsten carbide powder using a vibrating screen, relating to the field of tungsten carbide powder processing. It includes a support frame, a ball mill body, and a crushing box. The ball mill body is rotatably mounted on the inner left and right sides of the support frame via a rotating shaft connecting sleeve. The crushing box is fixed to the top surface of the left end of the support frame. It also includes: a rotating gear fixed to the outer side of the ball mill body; a water tank outlet connected to the bottom end of a water supply pipe; and a pressure nozzle positioned on the outer side of the crushing roller. This ball mill for crushing tungsten carbide powder using a vibrating screen is equipped with a water supply mechanism, which continuously stores water in the crushing roller's components. The pressure nozzle also sprays water to suppress dust in the crushed material. Furthermore, the vibrating screen filtration process allows for secondary crushing of materials that do not meet the required standards, thereby accelerating the working efficiency of the ball mill body.

Description

Technical Field

[0001] This invention relates to the technical field of tungsten carbide powder processing, specifically to a ball mill for crushing tungsten carbide powder using a vibrating screen. Background Technology

[0002] As an important grinding equipment, the ball mill uses grinding media such as steel balls or ceramic balls inside to generate strong impact and grinding action during rotation, which further refines tungsten carbide powder to the required particle size range.

[0003] However, when existing ball mills are in use, the crushing mechanism can crush materials, but during the crushing process, it is very easy to cause the crushed materials to be of different sizes, which results in low efficiency when ball milling.

[0004] To overcome the aforementioned shortcomings, reference can be made to the prior art (Chinese patent application number CN202410772209.3, publication date 2024-08-27) which discloses a secondary crushing device for ore. In this device, the crushing rollers rotate relative to the teeth on the outer cylinder, thus achieving a higher relative speed and higher crushing efficiency compared to a single-cylinder rotating structure. This invention also reduces the load on the ball mill, thereby reducing ball mill wear and shortening the ore grinding time.

[0005] Another example is a wet rapid ball mill disclosed in the prior art (Chinese patent application number CN02320095375.5, publication date 2023-08-15). This ball mill can push the seat to move back and forth through the cooperation of the linkage mechanism. The push seat can push the material between the partition and the discharge port into the discharge port. The material is further crushed by the cutting blades in the discharge port. The material enters the ball mill body through the guide pipe. The ball mill body performs rapid and efficient ball milling on the small particles of material.

[0006] Alternatively, one can refer to the prior art (Chinese patent application number CN202210811122.3, publication date 2024-05-28) which discloses an electronic ceramic grinding ball mill. This ball mill refines a portion of the electronic ceramics. When the fine particles reach the required diameter, they pass through the small holes inside the sieve plate. This achieves automatic pre-screening of particles during the grinding process, preventing accumulation and buffering of internal grinding force, extending processing time, and simultaneously accelerating output efficiency.

[0007] Although the existing technology can solve the problem of secondary crushing, in order to overcome the dust generated during the crushing process, water needs to be injected into the internal parts of the device. However, the existing technology lacks a mechanism for injecting water into the device, which causes some inconvenience during operation.

[0008] Therefore, we propose a ball mill for crushing tungsten carbide powder using a vibrating screen to solve the problems mentioned above. Summary of the Invention

[0009] The purpose of this invention is to provide a ball mill for crushing tungsten carbide powder using a vibrating screen, in order to overcome the dust generated during processing, as mentioned in the background art, the existing ball mills on the market require water injection into the internal parts of the device to overcome the dust generated during processing. However, the prior art lacks a mechanism for water injection into the device, which causes inconvenience during operation.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a ball mill for crushing tungsten carbide powder by vibrating screen, comprising a support frame, a ball mill body and a crushing box, wherein the ball mill body is rotatably mounted on the left and right sides of the inner side of the support frame via a rotating shaft connecting sleeve, and the crushing box is fixed on the top surface of the left end of the support frame.

[0011] It also includes: a transmission box is installed on the top surface of the middle end of the support frame, the gear fixed at the output end of the transmission box is meshed with the lower outer side of the rotating gear, and the inner side of the rotating gear is fixed to the outer side of the ball mill cylinder body.

[0012] The right end of the ball mill cylinder body meshes with the end of the connecting gear through a transmission assembly. The outer side of the connecting gear is rotatably positioned on the outer side of the crushing box. Two sets of crushing rollers are rotatably positioned at the upper inner end of the crushing box.

[0013] A water tank is fixedly installed on the top of the support frame near the right side of the crushing box. The outlet of the water tank is connected to the bottom of the water supply pipe. The top of the water supply pipe is configured to cooperate with the water supply mechanism. The outlet of the water supply mechanism is connected to one end of the pressure nozzle, and the pressure nozzle is located on the outside of the crushing roller.

[0014] Preferably, the outer side of the connecting gear is meshed with the outer side of the linkage gear, and the ends of both the connecting gear and the linkage gear are fixed on the outer left side of the crushing roller. The rods inside the two sets of crushing rollers are provided with grooves to facilitate the flow of water. The rotation directions of the two sets of crushing rollers are opposite, so that the connecting gear and the linkage gear can be matched to drive the crushing roller to rotate.

[0015] Preferably, the right end of the crushing roller is connected to the water conveying mechanism. The water conveying mechanism includes a reciprocating screw fixed to the outside of the crushing box on the right side of the crushing roller. The reciprocating screw is threaded to the inside of the through pipe. The right end of the through pipe is slidably disposed inside the fixed square tube. The fixed square tube is fixed to the inside of the right end of the water storage pipe. The left end of the water storage pipe is connected to the upper end of the water conveying pipe. The left end of the through pipe is fixed to the side of the piston block. The piston block has a groove inside its center to facilitate the contact of the contact cone. The right side of the contact cone is fixed to the left side of the fixed ring by a return spring. The fixed ring is fixed inside the water delivery channel opened inside the through pipe. The water source inside the water tank is drawn and processed by the water conveying mechanism.

[0016] Preferably, the inner side of the reciprocating screw is hollow, and the hollow opening inside the reciprocating screw is connected to the hollow opening inside the crushing roller. The threads of the reciprocating screws connecting the two sets of crushing rollers are opposite. The moving direction and moving distance of the two sets of passage pipes are the same. Water absorption can be achieved by driving the piston to move to the same position through the two sets of passage pipes.

[0017] Preferably, the water supply pipe is equipped with a one-way inlet valve, and the through pipe forms a sliding structure between the reciprocating screw and the inner side of the fixed square tube. The water supply channel, the reciprocating screw, and the crushing roller are arranged on the same axis, which facilitates the absorption and treatment of the water source.

[0018] Preferably, the crushing rollers are arranged in several groups at equal angles to the center position of the water supply pipe, and the water supply mechanism is symmetrically distributed in two groups about the transverse center line of the crushing box. The outer side of the fixed square tube is fixed to the side wall of the crushing box, so that the water supply mechanism can act on the two groups of crushing rollers.

[0019] Preferably, a feed inlet is provided at the top of the crushing box, a secondary processing box is fixed at the front of the crushing box, a fixed motor is fixedly installed at the bottom of the secondary processing box, a rotating worm is fixed at the output end of the fixed motor, the top of the rotating worm is fixed at the bottom of the auger body, worm wheels are meshed with both sides of the rotating worm, a rotating rod is fixed at the center end of the worm wheel, the middle part of the rotating rod is rotatably disposed inside the crushing box, and a set of cams is fixed at one end of the rotating rod that extends into the crushing box. The cams are disposed below the vibrating screen assembly, thereby enabling secondary crushing processing.

[0020] Preferably, the vibrating screen assembly includes a screen plate slidably disposed inside the crushing chamber, a convex plate at the top of the screen plate for easy guidance, and four corners of the screen plate slidably disposed on the outside of the guide rail. The upper and lower ends of the guide rail are fixed inside the crushing chamber. The vibrating screen assembly allows for secondary processing of unqualified materials.

[0021] Preferably, the upper outer side of the guide rail is fixed to the first end of the spring, the tail end of the spring is fixed to the top of the screen plate, and the bottom of the screen plate is in contact with the top of the cam, which allows the screen plate to vibrate up and down.

[0022] Preferably, a set of conical downward feeding ports are provided inside the crushing box between the crushing roller and the vibrating screen assembly. The bottom of the crushing box is connected to the inlet of the ball mill body through the feeding port. The inlet of the secondary processing box is inclined upward between it and the crushing box, and the top outlet of the secondary processing box is inclined downward between it and the crushing box. The top outlet of the secondary processing box is located above the crushing roller, which facilitates the conveying and feeding of materials into the secondary processing box.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: This ball mill for crushing tungsten carbide powder using a vibrating screen is equipped with a water supply mechanism. This mechanism allows for continuous water storage on the crushing rollers, and pressure nozzles are used to spray water onto the crushed material for dust suppression. Furthermore, the vibrating screen filtration process allows for secondary crushing of materials that do not meet the required standards, thereby accelerating the working efficiency of the ball mill body. Specific details are as follows:

[0024] 1. A reciprocating screw is set up. The crushing roller drives two sets of reciprocating screws to rotate. This allows the threaded pipe connected to the outside of the water storage pipe to slide through the fixed square tube. This allows the piston block set at one end of the pipe to perform water suction and water delivery. The water source is also used to suppress dust on the material through the pressure nozzle.

[0025] Furthermore, a one-way inlet valve is installed, which allows water to be delivered into the storage pipe. Through the cooperation of the fitting cone and the water delivery channel, the water source can be continuously delivered.

[0026] 2. A secondary processing box is set up. A fixed motor at the bottom of the secondary processing box drives the rotating worm and the auger body to rotate inside the secondary processing box, which can realize the secondary crushing treatment of unqualified materials;

[0027] Furthermore, a vibrating screen assembly is installed. Through the coordinated arrangement of the vibrating screen assembly, qualified materials fall into the interior of the ball mill cylinder through the feed port, while unqualified materials fall into the feed port of the secondary processing box, thereby achieving the purpose of vibrating screening. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the main structure of the support frame of the present invention;

[0030] Figure 3 This is a schematic diagram of the main cross-sectional structure of the crushing box of the present invention;

[0031] Figure 4 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0032] Figure 5 This is a schematic diagram of the main cross-sectional structure of the secondary processing box of the present invention;

[0033] Figure 6 This is a schematic diagram of the main structure of the vibrating screen assembly of the present invention;

[0034] Figure 7 This is a schematic diagram of the main structure of the crushing roller of the present invention;

[0035] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B;

[0036] Figure 9 This is a schematic diagram of the main cross-sectional structure of the water storage pipe of the present invention;

[0037] Figure 10 This is a schematic diagram of the main cross-sectional structure of the piston block of the present invention.

[0038] In the diagram: 1. Support frame; 101. Rotary shaft connecting sleeve; 2. Transmission box; 3. Rotating gear; 4. Ball mill cylinder body; 5. Transmission assembly; 6. Connecting gear; 7. Linkage gear; 8. Crushing box; 9. Feed inlet; 10. Secondary processing box; 11. Fixed motor; 12. Rotating worm gear; 13. Screw conveyor body; 14. Worm wheel; 15. Rotating rod; 16. Cam; 17. Vibrating screen assembly; 1701. Screen plate; 1702. Convex plate; 1703. Guide rail; 18. Feed inlet; 19. Water tank; 20. Water supply pipe; 21. Crushing roller; 22. Water storage pipe; 23. Reciprocating screw; 24. Through pipe; 25. Fixed square tube; 26. Piston block; 27. Fitting cone block; 28. Return spring; 29. ​​Fixing ring; 30. Water supply channel; 31. Pressure nozzle. Detailed Implementation

[0039] Please see Figures 1-10 The present invention provides the following technical solution:

[0040] Example 1: To address the issue of dust generation during processing in current ball mills, water injection is required inside the device. However, existing technologies lack solutions for this internal water injection. (See attached...) Figure 1 Appendix Figure 3 and attached Figure 7 - Appendix Figure 10The system includes a support frame 1, a ball mill body 4, and a crushing box 8. The ball mill body 4 is rotatably mounted on the left and right sides of the inner side of the support frame 1 via a rotating shaft connecting sleeve 101. The crushing box 8 is fixed to the top surface of the left end of the support frame 1. A transmission box 2 is installed on the top surface of the middle end of the support frame 1. The gear fixed at the output end of the transmission box 2 is meshed with the lower outer side of the rotating gear 3. The inner side of the rotating gear 3 is fixed to the outer side of the ball mill body 4. The right end of the ball mill body 4 is connected to the connecting gear via a transmission assembly 5. The ends of the connecting gear 6 are meshed, and the outer side of the connecting gear 6 is rotatably set on the outer side of the crushing box 8. Two sets of crushing rollers 21 are rotatably set at the upper end of the crushing box 8. A water tank 19 is fixedly installed on the top of the support frame 1 near the right side of the crushing box 8. The outlet of the water tank 19 is connected to the bottom end of the water supply pipe 20. The top of the water supply pipe 20 is configured to cooperate with the water supply mechanism. The outlet of the water supply mechanism is connected to one end of the pressure nozzle 31, and the pressure nozzle 31 is set on the outer side of the crushing roller 21. The outer side of the connecting gear 6 is meshed with the outer side of the linkage gear 7. The ends of the connecting gear 6 and the linkage gear 7 are both fixed on the outer side of the left end of the crushing roller 21. The rods inside the two sets of crushing rollers 21 have grooves to facilitate the flow of water. The rotation directions of the two sets of crushing rollers 21 are opposite. The right end of the crushing roller 21 is connected to the water conveying mechanism. The water conveying mechanism includes a reciprocating screw 23 fixed to the outside of the crushing box 8 on the right side of the crushing roller 21. The reciprocating screw 23 is threaded to the inside of the pipe 24. The right end of the pipe 24 is slidably disposed inside the fixed square tube 25. The fixed square tube 25 is fixed to the inside of the right end of the water storage pipe 22. The left end of the water storage pipe 22 is connected to the upper end of the water conveying pipe 20. The left end of the pipe 24 is fixed to the side of the piston block 26. The piston block 26 has a groove inside its center to facilitate the contact of the cone block 27. The right side of the contact cone block 27 is fixed to the left side of the fixed ring 29 by a return spring 28. The fixed ring 29 is fixed inside the water delivery channel 30 opened inside the pipe 24. The inner side of the reciprocating screw 23 is hollow, and the hollow opening inside the reciprocating screw 23 is connected to the hollow opening inside the crushing roller 21. The threads of the reciprocating screw 23 connecting the two sets of crushing rollers 21 are opposite. The moving direction and moving distance of the two sets of through pipes 24 are the same. A one-way water inlet valve is installed inside the water supply pipe 20. The through pipe 24 forms a sliding structure between the reciprocating screw 23 and the inner side of the fixed square tube 25. The water supply channel 30, the reciprocating screw 23, and the crushing roller 21 are arranged on the same axis. Several sets of crushing rollers 21 are arranged at equal angles with respect to the center position of the water supply pipe 20. Two sets of water supply mechanisms are symmetrically distributed about the transverse center line of the crushing box 8. The outer position of the fixed square tube 25 is fixed to the side wall of the crushing box 8.

[0041] When using this device, first fill the water tank 19 with water, then add tungsten carbide raw material into the secondary processing box 10 through the feed inlet 9. Next, start the transmission box 2, causing its gears to rotate. Since the gear connected to the output end of the transmission box 2 is meshed with the rotating gear 3, the rotating gear 3 drives the ball mill body 4 to rotate inside the support frame 1 via the rotating shaft connecting sleeve 101. At this time, the crushed material can be processed through the ball mill body 4. The right end of the rotating gear 3 will then... The transmission assembly 5 drives the connecting gear 6 to rotate, enabling the connecting gear 6 to rotate outside the crushing box 8. A linkage gear 7 is meshed with one side of the connecting gear 6, causing the crushing roller 21, which is fixedly connected to the connecting gear 6, to rotate. At this time, the crushing roller 21 can crush the tungsten carbide raw material. When the crushing roller 21 rotates and crushes, the end of the crushing roller 21 will drive the reciprocating screw 23 to rotate. Since the reciprocating screw 23 is threadedly connected to the inner side of the through pipe 24, and the left side of the through pipe 24... The piston block 26 is square in shape and slidably disposed inside the fixed square tube 25. When the reciprocating screw 23 rotates, it drives the piston block 26 to move back and forth. When the piston block 26 moves to the right, its outer wall fits against the inner wall of the water storage pipe 22. At this time, one side of the contact cone 27 fits against the inner wall of the piston block 26. The piston block 26 draws water from the water tank 19 through the water storage pipe 22 and the water supply pipe 20, and the water will remain inside the water storage pipe 22. When the piston block 26 moves to the left, due to the water supply pipe 20... The internal water inlet valve is set up so that the water in the water storage pipe 22 will not flow back. As the piston block 26 moves continuously, the contact cone block 27 will deform through the return spring 28. At this time, the water will flow through the hole of the piston block 26 into the water delivery channel 30. The water delivery channel 30 is on the same axis as the reciprocating screw 23 and the crushing roller 21, which makes it easier for the water to enter the crushing roller 21 and be sprayed through the pressure nozzle 31. The sprayed water can suppress dust during crushing.

[0042] Example 2: To facilitate secondary processing and improve the processing efficiency of the ball mill body, please refer to the attached document. Figure 1 - Appendix Figure 6The crushing box 8 has a feed inlet 9 at its top. A secondary processing box 10 is fixed to the front of the crushing box 8. A fixed motor 11 is fixed to the bottom of the secondary processing box 10. A rotating worm 12 is fixed to the output end of the fixed motor 11. The top of the rotating worm 12 is fixed to the bottom of the auger body 13. Worm wheels 14 are meshed on both sides of the rotating worm 12. A rotating rod 15 is fixed to the center end of the worm wheel 14. The middle part of the rotating rod 15 is rotatably disposed inside the crushing box 8. A set of cams 16 is fixed to one end of the rotating rod 15 that extends into the crushing box 8. The cams 16 are located below the vibrating screen assembly 17. The screen assembly 17 includes a screen plate 1701 that is slidably disposed inside the crushing box 8. A protruding plate 1702 is located at the top of the screen plate 1701 for easy guidance. The four corners of the screen plate 1701 are slidably disposed on the outside of the guide rail 1703. The upper and lower ends of the guide rail 1703 are fixed inside the crushing box 8. The upper outer side of the guide rail 1703 is fixed to the first end of the spring, and the tail end of the spring is fixed to the top of the screen plate 1701. The bottom of the screen plate 1701 is in contact with the top of the cam 16. A set of conical downward feeding ports is provided inside the crushing box 8 between the crushing roller 21 and the vibrating screen assembly 17. The bottom of the crushing box 8 is connected to the inlet of the ball mill body 4 through the feeding port 18. The inlet of the secondary processing box 10 is inclined upward between it and the crushing box 8, and the top outlet of the secondary processing box 10 is inclined downward between it and the crushing box 8. The top outlet of the secondary processing box 10 is located above the crushing roller 21.

[0043] After crushing, the crushed tungsten carbide raw material falls into the top of the vibrating screen assembly 17 through the feed port. The vibrating screen assembly 17, through the setting of the convex plate 1702, will fall onto the top of the screen plate 1701. By starting the fixed motor 11 set at the bottom of the secondary processing box 10, the output end of the fixed motor 11 drives the rotating worm 12 to rotate. Since two sets of worm gears 14 are meshed on the outer side of the rotating worm 12, the worm gears 14 can drive the rotating rod 15 to rotate on the outer side of the crushing box 8. At this time, the rotating rod 15 will also drive the cam 16 to rotate, so that the top position of the cam 16 presses against the bottom position of the vibrating screen assembly 17, causing the screen plate 1701 to vibrate up and down through the guide rail 1703. The process involves rotating the mill body 4 so that qualified materials fall into the mill body 4 through the feed port 18 for processing, and vibrating to shake off unqualified materials so that they fall into the inlet of the secondary processing box 10. The auger body 13 is driven by the fixed motor 11 to rotate inside the secondary processing box 10 and is then conveyed to the top of the crushing box 8 through the secondary processing box 10 for secondary processing by two sets of crushing rollers 21 until it can fall into the feed port 18 through the screen plate 1701. Since the mill body 4 is constantly rotating, the steel balls inside the mill body 4 process the materials, and tungsten carbide powder can be obtained through the outlet of the mill body 4.

Claims

1. A ball mill for crushing tungsten carbide powder by vibrating screen, comprising a support frame (1), a ball mill body (4) and a crushing box (8), wherein the ball mill body (4) is rotatably mounted on the left and right sides of the inner side of the support frame (1) via a rotating shaft connecting sleeve (101), and the crushing box (8) is fixed on the top surface of the left end of the support frame (1). Its features are, Also includes: A transmission box (2) is installed on the top surface of the middle end of the support frame (1). The gear fixed at the output end of the transmission box (2) is meshed with the lower outer side of the rotating gear (3). The inner side of the rotating gear (3) is fixed on the outer side of the ball mill body (4). The right end of the ball mill cylinder body (4) meshes with the end of the connecting gear (6) through the transmission assembly (5). The outer side of the connecting gear (6) is rotatably set on the outer side of the crushing box (8). Two sets of crushing rollers (21) are rotatably set on the upper part of the inside of the crushing box (8). A water tank (19) is fixedly installed on the top of the support frame (1) near the right side of the crushing box (8). The outlet of the water tank (19) is connected to the bottom of the water supply pipe (20). The top of the water supply pipe (20) is configured to cooperate with the water supply mechanism. The outlet of the water supply mechanism is connected to one end of the pressure nozzle (31), and the pressure nozzle (31) is located on the outside of the crushing roller (21). The right end of the crushing roller (21) is connected to the water supply mechanism. The water supply mechanism includes a reciprocating screw (23) fixed to the outside of the crushing box (8) on the right side of the crushing roller (21). The reciprocating screw (23) is threaded to the inside of the through pipe (24). The right end of the through pipe (24) is slidably disposed inside the fixed square tube (25). The fixed square tube (25) is fixed to the water storage pipe ( On the right inner side of 22), the left end of the water storage pipe (22) is connected to the upper end of the water supply pipe (20). The left end of the through pipe (24) is fixed to the side of the piston block (26). The piston block (26) has a groove inside the center to facilitate the fitting of the cone block (27). The right side of the fitting cone block (27) is fixed to the left side of the fixing ring (29) by the return spring (28). The fixing ring (29) is fixed in the water delivery channel (30) opened inside the through pipe (24). The inner side of the reciprocating screw (23) is hollow. The hollow opening inside the reciprocating screw (23) is connected to the hollow opening inside the crushing roller (21). The threads of the reciprocating screw (23) connected to the two sets of crushing rollers (21) are opposite. The moving direction and moving distance of the two sets of through pipes (24) are the same. The water supply pipe (20) is equipped with a one-way inlet valve. The through pipe (24) forms a sliding structure between the reciprocating screw (23) and the inner side of the fixed square tube (25). The water supply channel (30), the reciprocating screw (23) and the crushing roller (21) are arranged on the same axis.

2. The ball mill for crushing tungsten carbide powder using a vibrating screen as described in claim 1, characterized in that: The outer side of the connecting gear (6) is meshed with the outer side of the linkage gear (7). The ends of the connecting gear (6) and the linkage gear (7) are both fixed on the outer side of the left end of the crushing roller (21). The rods inside the two sets of crushing rollers (21) are provided with grooves to facilitate the flow of water. The rotation directions of the two sets of crushing rollers (21) are opposite.

3. The ball mill for crushing tungsten carbide powder using a vibrating screen as described in claim 1, characterized in that: The crushing roller (21) is arranged in several groups at equal angles with respect to the center position of the water supply pipe (20). The water supply mechanism is symmetrically distributed in two groups with respect to the transverse center line of the crushing box (8). The outer side of the fixed square tube (25) is fixed to the side wall of the crushing box (8).

4. The ball mill for crushing tungsten carbide powder using a vibrating screen as described in claim 1, characterized in that: The crushing box (8) has a feed inlet (9) at the top. A secondary processing box (10) is fixed at the front of the crushing box (8). A fixed motor (11) is fixed at the bottom of the secondary processing box (10). A rotating worm (12) is fixed at the output end of the fixed motor (11). The top of the rotating worm (12) is fixed at the bottom of the auger body (13). Worm wheels (14) are meshed on both sides of the rotating worm (12). A rotating rod (15) is fixed at the center end of the worm wheel (14). The middle part of the rotating rod (15) is rotatably set inside the crushing box (8). A set of cams (16) is fixed at one end of the rotating rod (15) that extends into the crushing box (8). The cams (16) are set below the vibrating screen assembly (17).

5. A ball mill for crushing tungsten carbide powder using a vibrating screen as described in claim 4, characterized in that: The vibrating screen assembly (17) includes a screen plate (1701) that is slidably disposed inside the crushing box (8). The top of the screen plate (1701) has a convex plate (1702) that facilitates the guidance of the processing. The four corners of the screen plate (1701) are slidably disposed on the outside of the guide rail (1703). The upper and lower ends of the guide rail (1703) are fixed inside the crushing box (8).

6. A ball mill for crushing tungsten carbide powder using a vibrating screen as described in claim 5, characterized in that: The upper outer side of the guide rail (1703) is fixed to the first end of the spring, the tail end of the spring is fixed to the top of the sieve plate (1701), and the bottom of the sieve plate (1701) is in contact with the top of the cam (16).

7. A ball mill for crushing tungsten carbide powder using a vibrating screen as described in claim 5, characterized in that: The crushing box (8) has a set of cone-shaped downward feeding ports located between the crushing roller (21) and the vibrating screen assembly (17). The bottom of the crushing box (8) is connected to the inlet of the ball mill body (4) through the feeding port (18). The inlet of the secondary processing box (10) is inclined upward between it and the crushing box (8). The top outlet of the secondary processing box (10) is inclined downward between it and the crushing box (8). The top outlet of the secondary processing box (10) is located above the crushing roller (21).

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