Combined steel ball screening machine

Abstract

The utility model discloses a combined steel ball screening machine, including ball inlet device, screening device, drive arrangement and frame, ball inlet device sets up below the mill barrel manhole door, screening device includes ball storage bin, screening unit, ball outlet pipeline and shock absorber spring, screening unit contains at least two screening unit bodies of gradually reducing from top to bottom clearance, screening device is elastically supported on the frame through a plurality of shock absorber springs, and drive arrangement is installed at the bottom of ball storage bin and is driven whole screening device up and down movement through bolt combination. The utility model discloses modularization combination design, can realize multistage screening, and the versatility is strong, and maintenance is convenient, and has reduced labor intensity, screening efficiency is high, and the precision is good, has prevented the blockage of screen cloth, has guaranteed the continuity and high accuracy of screening, and the service life of equipment is long.

Description

Technical Field

[0001] This utility model relates to a combined steel ball screening machine for classifying and screening steel balls for mills according to their diameter, belonging to the field of material screening technology. Background Technology

[0002] Ball mills are crucial grinding equipment in industries such as mining, cement, and power. Over long-term operation, the steel balls inside the mill wear and break, resulting in inconsistent ball diameters and affecting mill efficiency. Therefore, periodic shutdowns are necessary to remove and screen the steel balls, separating qualified balls from broken and small balls, and then reloading them with new steel balls. Currently, steel ball screening often uses fixed grid screens, drum screens, or simple vibrating screens. These devices have the following disadvantages: 1. Low efficiency: The screening process is mostly intermittent, with low automation and high labor intensity; 2. Frequent replacement: Changing the screening specifications is very troublesome with traditional screens, requiring the removal of numerous bolts and sometimes even the replacement of the entire screen box, which is time-consuming and labor-intensive; 3. Prone to clogging: The heavy weight and strong impact of steel balls easily cause screen deformation or clogging, affecting screening efficiency and accuracy; 4. Limited functionality: Most equipment can only perform two-stage or limited-level screening, making it difficult to meet the needs of multi-stage precision grading. Therefore, there is an urgent need for a special steel ball screening equipment that has high screening efficiency, allows for quick and easy replacement of screen specifications, has strong impact resistance, and can achieve multi-stage precision screening. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a combined steel ball screening machine to address the shortcomings of the existing technology.

[0004] To solve this technical problem, this utility model provides a combined steel ball screening machine, including a ball-collecting device, a screening device, a drive device, and a frame. The ball-collecting device is located below the manhole of the mill cylinder. The screening device includes a ball storage bin, a screening unit, a ball outlet pipe, and shock-absorbing springs. The screening unit includes at least two screening unit bodies with gradually decreasing gaps from top to bottom. The screening device is elastically supported on the frame by multiple shock-absorbing springs. The drive device is installed at the bottom of the ball storage bin and is bolted together to drive the entire screening device to move up and down.

[0005] The ball-collecting device includes a ball-receiving hopper and a ball-receiving pipe. The ball-receiving hopper is a funnel-shaped feed hopper installed below the manhole door of the mill cylinder to guide the steel balls to the screening unit.

[0006] The screening device is attached to the inside of the ball storage bin via a quick-connect fitting.

[0007] The screening unit includes a screen and a screen frame. The screen frame is welded from angle steel, and the screen is welded from round steel onto the screen frame. Five round holes are drilled on each side of the screen frame, which are connected to the internal support of the ball storage bin by wing bolts.

[0008] The screen has five levels, with the mesh gap gradually decreasing from top to bottom: the first level is 60mm, the second level is 50mm, the third level is 40mm, the fourth level is 30mm, and the fifth level is 20mm.

[0009] The bottom of the ball storage bin has a waste outlet for cleaning up garbage and smaller scrap steel balls.

[0010] The five screening units cut five ball outlets into the lower part of the ball storage chamber, and ball outlet pipes are welded below the ball outlets to discharge steel balls.

[0011] Multiple hoisting mechanisms are welded to both sides of the ball storage bin to facilitate hoisting and transportation.

[0012] The driving device includes a vibrating motor, which is bolted to the bottom of the ball storage bin. When the vibrating motor is working, it drives the entire screening device to move up and down.

[0013] The frame is welded from structural steel and forms the main support structure of the equipment.

[0014] Beneficial effects: Compared with existing technologies, this utility model adopts a modular combination design: through the combination of multiple detachable screening units, users can quickly and flexibly configure the screening process according to the required number and specifications of grading. One device can achieve multi-stage screening, with strong versatility; extremely convenient maintenance: when it is necessary to replace the screen or change the screening sequence, simply loosen the quick-connect parts to remove a single screening unit, greatly reducing labor time and labor intensity; high screening efficiency and good precision: the optimized vibration model effectively prevents screen clogging, ensuring the continuity and high precision of screening; good equipment stability: the overall structure is sturdy and reinforced with a design to withstand the large impact of steel balls, resulting in a long service life. Attached Figure Description

[0015] Figure 1 This is a schematic front view of the overall structure of this utility model; Figure 2 This is a schematic side view of the overall structure of this utility model; Figure 3 This is a schematic front view of a single screening unit of this utility model; Figure 4 This is a top view illustrating the structure of a single screening unit of this utility model.

[0016] In the diagram: 1. Ball-collecting device; 2. Screening device; 3. Drive device; 4. Frame; 11. Ball-receiving hopper; 12. Ball-receiving pipe; 21. Ball storage bin; 22. Screening unit; 23. Ball-discharging pipe; 24. Shock-absorbing spring; 25. Lifting mechanism; 211. Waste discharge port; 212. Ball discharge port; 221. Screening unit body; 2211. Screen; 2212. Screen frame. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] like Figures 1-4 As shown, this utility model provides a combined steel ball screening machine, including a ball-collecting device 1, a screening device 2, a drive device 3, and a frame 4. The ball-collecting device 1 is located below the manhole door of the mill cylinder and guides the steel balls cleared from the mill cylinder to the first-stage screening unit 22. The screening device 2 includes a ball storage bin 21, a screening unit 22, a ball outlet pipe 23, and shock-absorbing springs 24. The screening unit 22 includes at least two screening unit bodies 221 with gradually decreasing gaps from top to bottom. The screening device 2 is elastically supported on the frame 4 by multiple shock-absorbing springs 24. The drive device 3 is installed at the bottom of the ball storage bin 21 and is bolted together to drive the entire screening device 2 to move up and down.

[0019] The ball-collecting device 1 includes a ball-receiving hopper 11 and a ball-receiving pipe 12. The ball-receiving hopper 11 is a funnel-shaped feed hopper installed below the manhole door of the mill cylinder, which guides the steel balls to the screening unit 22.

[0020] The screening device 2 is connected inside the ball storage bin 21 via a quick-connect fitting.

[0021] The screening unit 221 includes a screen 2211 and a screen frame 2212 for fixing the screen. The screen frame 2212 is welded from angle steel, and the screen 2211 is welded from round steel onto the screen frame 2212. Five round holes are drilled on both sides of the screen frame 2212, and it is connected to the internal support of the ball storage bin 21 by wing bolts, which can realize the quick connection and release between the screening unit and the ball storage bin 21. The screening unit 221 is detachable and is installed sequentially from top to bottom inside the ball storage bin. The ball outlet pipe 23 is installed at the lowest inclined point of the screen 2211.

[0022] The screen 2211 has five levels, and the gap between the screen meshes of adjacent screening units gradually decreases from top to bottom. The first level is 60mm, the second level is 50mm, the third level is 40mm, the fourth level is 30mm, and the fifth level is 20mm, thus realizing multi-level screening.

[0023] The ball storage bin 21 has a waste discharge port 211 at the bottom for cleaning up garbage and smaller waste steel balls.

[0024] The five screening units 221 cut five ball outlets 212 into the lower part of the ball storage chamber 21. Ball outlet pipes 23 are welded below the ball outlets 212 to discharge steel balls for easy collection.

[0025] Multiple hoisting mechanisms 25 are welded to both sides of the ball storage bin 21 to facilitate the hoisting and transportation of the entire equipment.

[0026] The drive device 3 includes a vibration motor, which is bolted to the bottom of the ball storage bin 21 and connected to the frame via a metal helical spring to achieve elastic vibration. The vibration motor provides power to the entire device. When the vibration motor is working, it drives the entire screening device 2 to move up and down in a straight line. When screening steel balls, the vibration motor works continuously, driving the ball storage bin 21 to vibrate up and down, thereby increasing the efficiency of ball screening.

[0027] The frame 4 is welded from steel profiles and forms the main support structure of the equipment.

[0028] When this invention is in operation, the vibration motor of the drive device 3 is started, and the entire screening device 2 moves up and down under the action of excitation force. The mixed steel balls to be screened are fed in from the ball-infeeding device 1. The steel balls enter the screening device 2 below through the ball-receiving hopper and ball-receiving pipe of the ball-infeeding device. They first fall onto the first-stage screening unit 22. Steel balls smaller than the mesh gap of this layer fall quickly into the next-stage screening unit 22, while steel balls larger than the mesh gap fall from the ball-outlet of the ball storage bin 21 into the ball-outlet pipe. This cycle continues until all sizes of steel balls are screened. After 5 layers of screening, the steel balls are accurately screened into 6 sizes and discharged from the ball-outlet pipe 23, completing the entire screening process.

[0029] When it is necessary to change the screen size or perform maintenance, simply unscrew the wing bolts to remove the individual screening unit 22 for maintenance, which is convenient.

[0030] This utility model adopts a modular design: through the combination of multiple detachable screening units, users can quickly and flexibly configure the screening process according to the required number and specifications of grading. One machine can achieve multi-stage screening, making it highly versatile. Maintenance is extremely convenient: when it is necessary to replace the screen or change the screening sequence, simply loosen the quick-connect parts to remove a single screening unit, greatly reducing labor time and labor intensity. Screening efficiency and accuracy are high: the optimized vibration model effectively prevents screen clogging, ensuring the continuity and high precision of screening. The equipment has good stability: the overall structure is robust, and the design is reinforced to withstand the large impact of steel balls, resulting in a long service life.

[0031] The above-described embodiments of this utility model are merely illustrative examples and are not the only ones. All modifications within the scope of this utility model or equivalent to this utility model are encompassed by this utility model.

Claims

1. A combined steel ball sizing machine characterized by: The device includes a ball-collecting device (1), a screening device (2), a drive device (3), and a frame (4). The ball-collecting device (1) is located below the manhole of the mill cylinder. The screening device (2) includes a ball storage bin (21), a screening unit (22), a ball outlet pipe (23), and a shock-absorbing spring (24). The screening unit (22) includes at least two screening unit bodies (221) with gradually decreasing gaps from top to bottom. The screening device (2) is elastically supported on the frame (4) by multiple shock-absorbing springs (24). The drive device (3) is installed at the bottom of the ball storage bin (21) and is bolted together to drive the entire screening device (2) to move up and down.

2. The combination steel ball sizing machine of claim 1, wherein: The ball-collecting device (1) includes a ball-receiving hopper (11) and a ball-receiving pipe (12). The ball-receiving hopper (11) is a funnel-shaped feed hopper installed below the manhole door of the mill cylinder, which guides the steel balls to the screening unit (22).

3. The combination steel ball sizing machine of claim 1, wherein: The screening device (2) is connected inside the ball storage bin (21) by a quick connector.

4. The combination steel ball sizing machine of claim 1, wherein: The screening unit (221) includes a screen (2211) and a screen frame (2212). The screen frame (2212) is welded from angle steel, and the screen (2211) is welded from round steel onto the screen frame (2212). Five round holes are drilled on both sides of the screen frame (2212), and the screen is connected to the internal support of the ball storage bin (21) by wing bolts.

5. The combined steel ball screening machine according to claim 4, characterized in that: The screen (2211) has five levels, with the mesh gap gradually decreasing from top to bottom: the first level is 60mm, the second level is 50mm, the third level is 40mm, the fourth level is 30mm, and the fifth level is 20mm.

6. The combined steel ball screening machine according to claim 1, characterized in that: The bottom of the ball storage bin (21) has a waste outlet (211) for cleaning up garbage and smaller waste steel balls.

7. The combined steel ball screening machine according to claim 1, characterized in that: The five screening units (221) cut five ball outlets (212) into the lower part of the ball storage chamber (21), and a ball outlet pipe (23) is welded below the ball outlet (212) to discharge the steel balls.

8. The combined steel ball screening machine according to claim 1, characterized in that: Multiple hoisting mechanisms (25) are welded to both sides of the ball storage bin (21) to facilitate hoisting and transportation.

9. The combined steel ball screening machine according to claim 1, characterized in that: The drive device (3) includes a vibration motor, which is connected to the bottom of the ball storage bin (21) by bolts. When the vibration motor is working, it drives the entire screening device (2) to move up and down.

10. The combined steel ball screening machine according to any one of claims 1-9, characterized in that: The frame (4) is welded from steel profiles and forms the main support structure of the equipment.

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