Coal gangue crushing ball mill screening mechanism

Abstract

The present application relates to the technical field of coal gangue ball milling and screening, and discloses a ball milling and screening mechanism for coal gangue crushing, which comprises a base, a bearing seat arranged on the top of the base, a roller connected with the bearing seat in a rotary mode, and a gear ring arranged on the outer sidewall of the roller, one side of the base is provided with a screening assembly, and the screening assembly comprises a support frame, a shock absorber arranged on the top of the support frame, a screen box arranged on the top of the shock absorber, and an eccentric block rotatably connected with one side of the screen box; a driving assembly is arranged on the base, the driving assembly controls the rotary motion of the gear ring and the eccentric block, the eccentricity generated by the rotation of the eccentric block is utilized to make the screen box vibrate periodically; the screening assembly is arranged below the zirconium oxide grinding medium outlet of the roller, the discharged medium is directly conveyed into the screen box, the driving assembly is utilized to drive the rotation of the eccentric block, the screen box is made to vibrate periodically, and thus the automatic screening of the medium is realized, and the cumbersome process of manual collection and sorting is avoided.

Description

Technical Field

[0001] This invention relates to the technical field of ball mill screening of coal gangue, specifically to a ball mill screening mechanism for crushing coal gangue. Background Technology

[0002] In the coal industry, the mining and washing of raw coal continuously generate a large amount of coal gangue solid waste with complex composition and varying hardness. Historically, the industry has generally relied on primary crushing equipment such as jaw crushers or impact crushers for the crushing of this material. However, these machines often face common problems in practical applications, including low processing efficiency, high energy consumption, large dispersion in particle size distribution, and insufficient production of fine powder. The problems of accelerated wear of core components and decreased operational stability are particularly pronounced when processing coal gangue with large fluctuations in mechanical properties and high abrasiveness. Ball mills, widely used in fine material grinding, work by using the rotation of the cylinder to drive the internal grinding media (such as steel balls) to continuously impact and grind the material, thereby achieving efficient material refinement.

[0003] In ball milling processes, zirconia grinding media can wear down or even break due to continuous mechanical impact and friction, affecting grinding efficiency and requiring regular inspection and replacement. Currently, many workshops still use the traditional manual sorting method: after stopping the machine, the cylinder is opened, all the media is poured out, and workers manually sort out the broken beads. This method is not only cumbersome and time-consuming, but also makes it difficult to guarantee sorting efficiency and accuracy. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a ball mill screening mechanism for coal gangue crushing, which has the advantage of facilitating the collection and screening of media, and solves the problems of inconvenient media collection and low efficiency of manual sorting.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a ball mill screening mechanism for crushing coal gangue, comprising a base, a bearing seat disposed on the top of the base, a drum rotatably connected to the bearing seat, and a toothed ring disposed on the outer wall of the drum. A screening assembly is disposed on one side of the base, the screening assembly comprising: a support frame, a shock absorber disposed on the top of the support frame; a screen box disposed on the top of the shock absorber, an eccentric block rotatably connected to one side of the screen box, and a drive assembly disposed on the base. The drive assembly controls the rotational movement of the toothed ring and the eccentric block, and uses the change in eccentricity generated by the rotation of the eccentric block to cause the screen box to vibrate periodically.

[0008] Furthermore, the driving component includes: Motor 1 is mounted on the base. The output shaft of motor 1 is connected to shaft 1. A transmission wheel 1 and a gear are fixed on the outer side wall of shaft 1. The gear meshes with a gear ring. The second rotating shaft is rotatably connected to the base. A second transmission wheel is fixed to the outer wall of the second rotating shaft. The second transmission wheel is connected to the first transmission wheel by a transmission belt. The second rotating shaft is connected to the eccentric block by a flexible coupling.

[0009] Furthermore, the base is provided with a guide rail, and a material guiding component is provided on the guide rail. The material guiding component is used to limit the medium discharged from the drum.

[0010] Furthermore, the material guiding assembly includes: a plate body disposed on a guide rail; and a baffle plate disposed at an incline on the plate body, the plate body having a through groove that connects with the feed inlet of the screen box.

[0011] Furthermore, a groove for storing a baffle is provided on the top of the plate, and a second motor is provided on the plate. The output shaft of the second motor is connected to a transmission assembly, which is used to control the rotation angle of the baffle.

[0012] Furthermore, the transmission assembly includes: a fourth rotating shaft, which is fixed to the output shaft of the second motor, and a worm gear is fixed to the outer side wall of the fourth rotating shaft; and a fifth rotating shaft, which is rotatably connected to the plate, and a worm wheel is fixed to the outer side wall of the fifth rotating shaft, the worm wheel meshing with the worm gear, and one end of the fifth rotating shaft is fixed to a baffle.

[0013] Furthermore, a discharge assembly is provided on one side of the base. The discharge assembly includes: a box body, which is located at the discharge port of the roller, and a discharge port is provided at the bottom of the box body. The bottom end of the discharge port is connected to a screening device; a commutator, whose input end is connected to the second rotating shaft and whose output shaft is connected to the third rotating shaft; a rod body, whose two ends are respectively connected to the commutator and the box body; and a dispersing disc, which is located at the bottom end of the third rotating shaft.

[0014] Furthermore, an auger is provided on the outer wall of the rotating shaft three.

[0015] Furthermore, the outer wall of the roller is provided with a vibration assembly, which includes: a ring body, which is disposed on the outer wall of the roller and a rotating shaft six is ​​rotatably connected to the ring body; a pressure applying part, which is fixed to the outer wall of the rotating shaft six and a torsion spring is provided between the pressure applying part and the ring body; and a support plate, which is fixed to one end of the rotating shaft six.

[0016] Furthermore, a roller is rotatably connected to one end of the support plate.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a ball mill screening mechanism for crushing coal gangue, which has the following beneficial effects: 1. The ball mill screening mechanism for crushing coal gangue has a screening component installed below the zirconia grinding media outlet of the drum. The discharged media is directly transported into the screen box. The drive component drives the eccentric block to rotate, causing the screen box to vibrate periodically, thereby realizing automatic screening of the media. This avoids the tedious process of manual collection and sorting and improves screening efficiency.

[0019] 2. In this ball mill screening mechanism for coal gangue crushing, during the discharge operation of the media inside the drum, the media is discharged from the inspection port as the drum rotates. However, due to the centrifugal force generated by the drum rotation, the discharge range of the media is significantly expanded. To effectively control this phenomenon, a material guiding component is installed. The rotation angle of the baffle is controlled by a motor and a transmission component, which controls the flow direction of the media, ensuring that the media can smoothly enter the screen box for screening, further improving the screening effect.

[0020] 3. This ball mill screening mechanism for coal gangue crushing typically introduces coal gangue material into a screening component for screening after ball milling. Screening ensures that all particles are within a certain particle size range to meet the requirements of subsequent processes. Therefore, the material after ball milling needs further screening. The ball-milled material is first conveyed at a uniform speed by an auger. The drive component rotates the commutator, causing the dispersing disc to rotate as well. This disperses the material while centrifugation disperses it into the screening device below, preventing material agglomeration and accumulation on the screen. This ensures that the material enters the screening device uniformly and smoothly, effectively improving the overall screening quality and subsequent processing effect.

[0021] 4. The ball mill screening mechanism for coal gangue crushing is equipped with a vibration component that functions during drum rotation. When the drum rotates, the rollers on the support plate press one end of the pressure-applying part, causing the angle of the pressure-applying part to change. When the rollers and the pressure-applying part are not in contact, the other end of the pressure-applying part will generate a certain vibration impact on the drum under the action of the torsion spring. This vibration helps the medium or material inside the drum to separate from the liner inside the roller, thereby facilitating the smooth discharge of subsequent media from the drum. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the driving component in this invention. Figure 1 ; Figure 4 This is a schematic diagram of the structure of the driving component in this invention. Figure 2 ; Figure 5 This is a schematic diagram of the material discharge assembly in this invention; Figure 6 This is a schematic diagram of the material guiding component in this invention; Figure 7 This is a partial structural diagram of the material guiding component in this invention.

[0023] In the picture: 100. Base; 110. Bearing housing; 120. Roller; 130. Gear ring; 140. Guide rail; 200. Screening assembly; 210. Support frame; 220. Shock absorber; 230. Screen box; 240. Eccentric block; 300. Drive assembly; 310. Shaft 1; 320. Gear; 330. Transmission wheel 1; 340. Transmission wheel 2; 350. Transmission belt; 360. Shaft 2; 370. Flexible coupling; 380. Motor 1; 400. Discharge assembly; 401. Housing; 402. Discharge port; 410. Rotary shaft three; 420. Screw; 430. Rod; 440. Dispersing disc; 450. Commutator; 500. Material guiding assembly; 510. Plate body; 520. Groove; 530. Baffle; 540. Motor II; 550. Shaft IV; 560. Worm; 570. Worm wheel; 580. Shaft V; 600, Vibration assembly; 610, Ring body; 620, Rotating shaft six; 630, Pressure application part; 640, Torsion spring; 650, Support plate; 660, Roller. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In ball milling processes, zirconia grinding media can wear down or even break due to continuous mechanical impact and friction, affecting grinding efficiency and requiring regular inspection and replacement. Currently, many workshops still use the traditional manual sorting method: after stopping the machine, the cylinder is opened, all the media is poured out, and workers manually sort out the broken beads. This method is not only cumbersome and time-consuming, but also makes it difficult to guarantee sorting efficiency and accuracy.

[0026] As attached Figure 1-4As shown, an embodiment of the present invention discloses a ball mill screening mechanism for crushing coal gangue, including a base 100, a bearing seat 110 disposed on the top of the base 100, a drum 120 rotatably connected to the bearing seat 110, and a toothed ring 130 disposed on the outer side wall of the drum 120. A screening assembly 200 is disposed on one side of the base 100. The linkage design between the screening component and the drum 120 enables the sorting of grinding media based on their breakage status. Specifically, the rotation of the drum 120 drives the toothed ring 130 to rotate synchronously, causing the screen to vibrate at a specific frequency. Due to differences in particle size or surface defects, the broken media exhibit different motion trajectories during vibration, ultimately achieving automatic separation through screen aperture classification. This process requires no machine downtime, significantly reducing the equipment downtime required for traditional manual sorting, while also avoiding potential omissions or misjudgments that may occur during manual sorting.

[0027] The screening assembly 200 includes: a support frame 210, on the top of which a shock absorber 220 is provided, the shock absorber 220 mainly consisting of a spring and a spring support seat; a screen box 230, which is located on top of the shock absorber 220, and an eccentric block 240 is rotatably connected to one side of the screen box 230; and a drive assembly 300 is provided on the base 100. The drive assembly 300 controls the rotational movement of the gear ring 130 and the eccentric block 240, and uses the change in eccentricity generated by the rotation of the eccentric block 240 to make the screen box 230 vibrate periodically.

[0028] Specifically, after the drive assembly 300 starts, it controls the rotation of the gear ring 130, which drives the eccentric block 240 linked to it to rotate synchronously. During the rotation of the eccentric block 240, due to the eccentricity between its center of mass and the center of rotation, a constantly changing centrifugal force is generated. This changing centrifugal force is transmitted to the screen box 230 through the connection structure between the screen box 230 and the shock absorber 220, causing the screen box 230 to vibrate periodically and regularly. The spring and spring support in the shock absorber 220 can effectively absorb and buffer some of the vibration energy, ensuring the stability of the vibration of the screen box 230, while reducing the impact of vibration on the base 100 and other components, ensuring that the entire screening mechanism has good stability and reliability while operating efficiently.

[0029] As attached Figure 3As shown, in some embodiments, the drive assembly 300 includes: a motor 380, which is mounted on a base 100. A through slot is provided on the base 100, and a bearing seat 2 is disposed within the slot, serving to fix the motor 380. The output shaft of the motor 380 is connected to a rotating shaft 310. A transmission wheel 330 and a gear 320 are fixed to the outer wall of the rotating shaft 310, and the gear 320 meshes with a gear ring 130. A rotating shaft 360 is rotatably connected to the base 100. A transmission wheel 340 is fixed to the outer wall of the rotating shaft 360, and the transmission wheel 340 is connected to the transmission wheel 330 via a transmission belt 350. The rotating shaft 360 is connected to the eccentric block 240 via a flexible coupling 370. The two transmission wheels and the transmission belt can be synchronous belts and synchronous pulleys. The gear 320 and the gear ring 130 are shown in the figures, illustrating their tooth structure. These are prior art and will not be described further here.

[0030] Specifically, firstly, motor 380 drives shaft 310 to rotate, which in turn causes gear 320 to mesh with gear ring 130 for transmission. This transmission method can precisely control the rotation speed and angle of eccentric block 240, thereby achieving precise adjustment of the vibration frequency and amplitude of screen box 230 to meet the needs of different coal gangue crushing and screening. Secondly, shaft 310 drives shaft 360 to rotate through transmission wheel 330, transmission belt 350 and transmission wheel 340. Shaft 360 is then connected to eccentric block 240 through flexible coupling 370. The flexible coupling 370 can effectively buffer and absorb the impact and vibration during the transmission process, reduce damage to motor 380 and other components, and extend the service life of the equipment.

[0031] As attached Figure 3 As shown, in some embodiments, a guide rail 140 is provided on the base 100, and a material guiding assembly 500 is provided on the guide rail 140. The material guiding assembly 500 is used to restrict the medium discharged from the roller 120.

[0032] Specifically, the position of the material guiding component 500 on the guide rail 140 can be controlled to accommodate the different access port positions on the rollers 120. This configuration greatly enhances the flexibility and convenience of equipment use. In actual operation, the position of the material guiding component 500 can be quickly and accurately adjusted according to the changes in the access port positions of different rollers 120, ensuring that the medium discharged from the rollers is accurately guided to the designated area, avoiding media spillage or incorrect guidance.

[0033] As attached Figure 3As shown, in some embodiments, the material guiding assembly 500 includes: a plate 510, which is disposed on a guide rail 140, and a slider (not shown in the figures) is provided at the bottom of the plate 510 to cooperate with the guide rail 140; a baffle 530, which is inclinedly disposed on the plate 510, and the plate 510 has a through groove that connects with the feed inlet of the screen box 230. A groove 520 for receiving the baffle 530 is provided at the top of the plate 510, and a second motor 540 is disposed on the plate 510. The output shaft of the second motor 540 is connected to a transmission assembly, which is used to control the rotation angle of the baffle 530.

[0034] Specifically, the transmission assembly driven by motor 540 precisely controls the rotation angle of baffle 530, allowing for flexible adjustment of its tilt according to actual needs. When guiding the medium, baffle 530 is adjusted to a suitable angle, allowing the medium to smoothly pass through the trough and enter the feed inlet of screen box 230. When guiding the medium is not required, the angle of baffle 530 can be changed to make it horizontal and embedded in groove 520, facilitating operation of the maintenance port on roller 120 by the operator.

[0035] As attached Figure 7 As shown, in some embodiments, the transmission assembly includes: a fourth shaft 550, which is fixed to the output shaft of a second motor 540, and a worm gear 560 is fixed to the outer side wall of the fourth shaft 550; a fifth shaft 580, which is rotatably connected to a plate 510, and a worm wheel 570 is fixed to the outer side wall of the fifth shaft 580, which meshes with the worm gear 560, and one end of the fifth shaft 580 is fixed to a baffle 530.

[0036] Specifically, when motor 2 540 starts, it drives shaft 4 550 to rotate. The worm 560, fixed to the outer wall of shaft 4 550, rotates accordingly. Since worm wheel 570 is meshed with worm 560, worm wheel 570 rotates under the influence of worm 560, which in turn drives shaft 580, which is fixed to worm wheel 570, to rotate. This ultimately achieves precise control of the rotation angle of baffle 530, which is fixed to one end of shaft 580. After shaft 4 550 stops rotating, the self-locking function of worm wheel 570 and worm 560 prevents baffle 530 from rotating.

[0037] As attached Figure 4 and 5As shown, in some embodiments, a discharge assembly 400 is provided on one side of the base 100. The discharge assembly 400 includes: a housing 401, which is located at the discharge port of the roller 120, and a discharge port 402 is provided at the bottom of the housing 401, with the bottom end of the discharge port 402 connected to a screening device; a commutator 450, whose input end is connected to a second rotating shaft 360 and whose output shaft is connected to a third rotating shaft 410; a rod 430, whose two ends are respectively connected to the commutator 450 and the housing 401; and a dispersing disc 440, which is located at the bottom end of the third rotating shaft 410.

[0038] In the screening process of coal gangue after ball mill processing, the fine particle size of the material to be screened often necessitates the use of screens with small apertures. However, this configuration easily leads to two prominent problems in actual operation: firstly, fine particles are easily adsorbed or embedded in the screen holes, causing screen blockage; secondly, the common design of installing the screen directly below the ball mill discharge port causes large particles that fail to pass through the screen to remain continuously on the screen surface. This accumulation not only obstructs the normal screening path for qualified fine powder but also forces the production system to frequently stop operation for manual cleaning. This situation undoubtedly increases the workload of operators and significantly reduces the overall screening efficiency.

[0039] Specifically, the dispersing disc 440 mainly consists of a disc and multiple arc-shaped strips on the disc. During equipment operation, the rotating shaft 410 drives the dispersing disc 440 to rotate at high speed, and the multiple arc-shaped strips on the disc move in a circular motion, generating centrifugal force. This disperses the material falling onto the dispersing disc 440 onto the screening device. This dispersion effectively prevents localized accumulation of material on the screening device, ensuring that the material is evenly distributed on the screen surface. Simultaneously, the arc-shaped strip design enhances the dispersion effect, allowing the material to be more fully dispersed under centrifugal force, avoiding screen clogging caused by fine particles adsorption or embedding. Furthermore, the high-speed rotation of the dispersing disc 440 also generates a certain impact on large particles, causing them to pass through the screen or be separated more quickly, further improving screening efficiency. An auger 420 is installed on the outer wall of the rotating shaft 410.

[0040] Specifically, the auger 420 is positioned near the discharge port of the housing 401 on the rotating shaft 3 410. When the coal gangue material enters the housing 401 after ball milling, the auger 420 rotates along with the rotating shaft 3 410. This uniformly conveys the material within the housing 401 towards the discharge port, ensuring that the material enters the subsequent screening stage at a stable speed and flow rate. This uniform conveying prevents material accumulation and blockage within the housing 401, ensuring a continuous and smooth flow of material into the screening device, providing a strong guarantee for the stable operation of the entire screening process. Moreover, the conveying function of the auger 420 works in conjunction with the dispersing function of the dispersing disc 440. The auger 420 transports the material to the vicinity of the dispersing disc 440, which then evenly disperses the material onto the screening device. The two work together to greatly improve the quality and efficiency of screening.

[0041] In some embodiments, a vibration assembly 600 is provided on the outer wall of the roller 120. The vibration assembly 600 includes: a ring 610 disposed on the outer wall of the roller 120, with a rotating shaft 620 rotatably connected to the ring 610; a pressure applying part 630 fixed to the outer wall of the rotating shaft 620, with a torsion spring 640 disposed between the pressure applying part 630 and the ring 610; and a support plate 650 fixed to one end of the rotating shaft 580. A roller 660 is rotatably connected to one end of the support plate 650.

[0042] Specifically, when removing the grinding media from the drum 120, the maintenance personnel first open the access port and control the drive assembly 300 to control the rotation of the drum 120 and the operation of the screening assembly 200. During the rotation of the drum 120, because the pressure part 630 is in an inclined state, one end of the pressure part 630 contacts the roller 660, pressing down one end of the pressure part 630. With continuous rotation, one end of the pressure part 630 releases contact with the roller 660, and the other end of the pressure part 630 impacts the outer wall of the drum 120 due to the action of the torsion spring 640. This periodic impact action can generate vibration at a specific frequency, and the vibration is transmitted to the grinding media inside the drum 120. On the one hand, the vibration causes the grinding media to loosen, avoiding the agglomeration phenomenon formed by the close accumulation of media, so that the maintenance personnel can more smoothly remove the media from the access port; on the other hand, for the media attached to the lining of the drum 120, the vibration can make it fall off, reducing the amount of manual cleaning of the inner wall and improving the efficiency of media removal. Meanwhile, compared to the traditional method of manually striking the drum to discharge the medium, this vibration method has the advantages of stable vibration frequency and uniform action. It will not cause excessive impact force on the drum 120 and damage the drum structure, ensuring the safety and stability of the equipment in subsequent use, further extending the service life of the equipment and reducing the maintenance cost. Moreover, during the entire process of discharging the medium, due to the coordinated work of the rotation of the drum 120 and the vibration component 600, the medium can flow out from the inspection port relatively evenly, without local accumulation of too much or too little medium. This provides convenient conditions for subsequent screening and processing of the medium, and improves the continuity and efficiency of the entire coal gangue crushing and screening process. The attached figure only shows one set of vibration components 600. Depending on the site conditions, the striking area and number of the pressure unit 630 can be increased. The pressure unit 630 has a cuboid structure.

[0043] By flexibly adjusting the angle of the support plate 650, the contact time between the roller 660 and the pressure part 630 can be precisely controlled, thereby effectively adjusting the striking force. When the angle of the support plate 650 increases, the contact time between the roller 660 and the pressure part 630 is correspondingly extended. Under the action of the torsion spring 640, the impact force of the pressure part 630 on the outer wall of the drum 120 is enhanced, resulting in a larger vibration amplitude, which is more conducive to loosening the tightly packed grinding media and causing the media attached to the lining to fall off. Conversely, when the angle of the support plate 650 decreases, the contact time is shortened, the impact force is weakened, and the vibration amplitude is smaller, which is suitable for working conditions with lower vibration intensity requirements. This adjustable striking force design allows the vibration component 600 to flexibly adjust the vibration effect according to different coal gangue crushing and screening requirements and the actual conditions of the media inside the drum 120.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball mill screening mechanism for coal gangue crushing, comprising a base (100), a bearing seat (110) arranged at the top of the base (100), a roller (120) rotationally connected with the bearing seat (110), and a gear ring (130) arranged on the outer sidewall of the roller (120), characterized in that, A screening assembly (200) is provided on one side of the base (100), the screening assembly (200) including: A support frame (210) is provided with a shock absorber (220) on the top of the support frame (210). The screen box (230) is located on the top of the shock absorber (220). An eccentric block (240) is rotatably connected to one side of the screen box (230). A drive assembly (300) is provided on the base (100). The drive assembly (300) controls the rotation of the gear ring (130) and the eccentric block (240). By utilizing the change in eccentricity generated by the rotation of the eccentric block (240), the screen box (230) generates periodic vibration.

2. The ball mill screening mechanism for crushing coal gangue according to claim 1, characterized in that: The drive component (300) includes: Motor 1 (380) is mounted on base (100). The output shaft of motor 1 (380) is connected to shaft 1 (310). A transmission wheel 1 (330) and a gear (320) are fixed on the outer side wall of shaft 1 (310). The gear (320) meshes with a gear ring (130). Rotating shaft two (360) is rotatably connected to base (100). A transmission wheel two (340) is fixed on the outer wall of rotating shaft two (360). Transmission wheel two (340) is connected to transmission wheel one (330) through transmission belt (350). Rotating shaft two (360) is connected to eccentric block (240) through flexible coupling (370).

3. The ball mill screening mechanism for crushing coal gangue according to claim 2, characterized in that: The base (100) is provided with a guide rail (140), and the guide rail (140) is provided with a material guiding assembly (500). The material guiding assembly (500) is used to restrict the medium discharged from the roller (120).

4. The ball mill screening mechanism for crushing coal gangue according to claim 3, characterized in that: The feeding assembly (500) includes: Plate (510), plate (510) is mounted on guide rail (140); Baffle (530) is inclinedly set on plate (510), and plate (510) has a through groove that connects with the feed inlet of screen box (230).

5. The ball mill screening mechanism for crushing coal gangue according to claim 4, characterized in that: The top of the plate (510) is provided with a groove (520) for storing the baffle (530). The plate (510) is provided with a second motor (540). The output shaft of the second motor (540) is connected to a transmission assembly, which is used to control the rotation angle of the baffle (530).

6. The ball mill screening mechanism for crushing coal gangue according to claim 5, characterized in that: The transmission assembly includes: Rotary shaft four (550) is fixed to the output shaft of motor two (540), and a worm gear (560) is fixed to the outer wall of rotary shaft four (550). The fifth rotating shaft (580) is rotatably connected to the plate (510). A worm wheel (570) is fixed on the outer wall of the fifth rotating shaft (580). The worm wheel (570) meshes with the worm (560). One end of the fifth rotating shaft (580) is fixed to the baffle (530).

7. A ball mill screening mechanism for crushing coal gangue according to claim 6, characterized in that: A discharge assembly (400) is provided on one side of the base (100), and the discharge assembly (400) includes: Box (401), box (401) is set at the discharge port of drum (120), and discharge port (402) is set at the bottom of box (401). The bottom end of discharge port (402) is connected to screening device. The input end of the commutator (450) is connected to the second shaft (360), and the output shaft is connected to the third shaft (410). The rod (430) is connected to the commutator (450) and the housing (401) at both ends. Dispersion disk (440) is located at the bottom of the rotating shaft three (410).

8. The ball mill screening mechanism for crushing coal gangue according to claim 7, characterized in that: The outer wall of the rotating shaft three (410) is provided with an auger (420).

9. A ball mill screening mechanism for crushing coal gangue according to claim 8, characterized in that: The outer wall of the roller (120) is provided with a vibration assembly (600), the vibration assembly (600) including: Ring body (610) is provided on the outer side wall of roller (120), and a rotating shaft (620) is rotatably connected to the ring body (610). The pressure-applying part (630) is fixed to the outer side wall of the rotating shaft (620), and a torsion spring (640) is provided between the pressure-applying part (630) and the ring (610). Support plate (650) is fixed to one end of pivot five (580).

10. A ball mill screening mechanism for crushing coal gangue according to claim 9, characterized in that: One end of the support plate (650) is rotatably connected to a roller (660).

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