Automatic discharging device for steel balls of a ball grinder

Abstract

The utility model discloses a kind of steel ball automatic unloading devices for ball mill, including support and vertical installation on the support processing box, the top of processing box is equipped with feed pipe, the bottom of processing box is symmetrically equipped with first discharge port and second discharge port, the inside center of processing box is provided with fixed collar, fixed collar outside is equipped with movable collar, movable collar outside is equipped with multiple inverted U type pusher, U type guide chute for accommodating steel ball is equipped between adjacent inverted U type pusher, the deepest place of U type guide chute is provided with push plate, the inside of push plate is equipped with driving rod, the place of fixed collar outside close to first discharge port and second discharge port is equipped with the protruding portion that can cooperate with one end of driving rod, by the rotation conveying of movable collar, the directional receiving of U type guide chute, the trigger cooperation of driving rod and protruding portion and the active push of push plate, it is realized that steel ball can be smoothly unloaded, and unloading efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel ball production technology, specifically to an automatic steel ball unloading device for a ball grinding machine. Background Technology

[0002] A ball mill is a device used to manufacture metal balls, typically steel, iron, and aluminum balls. An automatic steel ball unloading device is usually installed at the discharge port of the ball mill to automatically discharge the balls from the machine. Typically, the automatic discharge process of a ball mill is controlled by a solenoid valve. This valve, installed at the discharge port, opens or closes based on signals from the control system, thus automatically discharging the steel balls and completing the unloading process.

[0003] Chinese utility model patent (authorization announcement number CN222269869U) discloses an automatic steel ball unloading device for a ball mill. It primarily addresses the problem that existing ball mills contain steel balls of varying sizes. If automatic unloading is achieved by controlling the discharge port with an electromagnetic valve, steel balls of different sizes are discharged together, affecting subsequent sorting, management, and reuse. The proposed solution includes a processing box with a support frame at its bottom. A feed pipe is connected to the top inlet of the processing box to guide the steel balls into the box. A support base is installed on the front wall of the processing box. This unloading device achieves automatic unloading while facilitating the separation of steel balls of different sizes through different outlets, thus simplifying subsequent storage and management.

[0004] However, during the discharge process of the above-mentioned unloading device, due to unreasonable design of the spacing between the baffle plates or improper edge structure, the steel balls are easily stuck in the gap, causing the discharge to be interrupted and requiring manual intervention to clear the blockage, which affects production efficiency. Utility Model Content

[0005] To address the aforementioned issues, an automatic steel ball unloading device for a ball mill is provided. Through the rotational conveying of the movable collar, the directional receiving of the U-shaped guide chute, the triggering cooperation between the drive rod and the protrusion, and the active pushing of the push plate, the steel balls can be smoothly unloaded, improving unloading efficiency.

[0006] To address the existing technical problems, this utility model provides an automatic steel ball unloading device for a ball mill, including a support frame and a processing box vertically mounted on the support frame. The processing box has a hollow rotating structure, with a feed pipe at the top and a first discharge port and a second discharge port symmetrically arranged on both sides of the bottom of the processing box. A fixed collar is provided at the center of the interior of the processing box, and a movable collar that can rotate around the circumference of the fixed collar is provided outside the fixed collar. A gap is provided between the movable collar and the fixed collar, and the movable collar can rotate around the circumference of the fixed collar.

[0007] The movable collar is provided with multiple inverted U-shaped baffles evenly spaced along its circumference. U-shaped guide grooves for receiving steel balls are provided between adjacent inverted U-shaped baffles. The U-shaped guide grooves can be connected to the feed pipe, the first discharge port and the second discharge port in sequence.

[0008] At the deepest part of the U-shaped guide chute is a push plate for pushing steel balls. The inner side of the push plate is provided with a drive rod that can extend movably to the outside of the fixed collar and slide along its circumference. The outside of the fixed collar is provided with a protrusion that can cooperate with one end of the drive rod near the first discharge port and the second discharge port. When one end of the drive rod cooperates with the protrusion, the push plate will push the steel ball and guide the steel ball to be discharged from the first discharge port or the second discharge port.

[0009] Preferably, the end of the drive rod near the fixed collar is connected to a sliding part that can slide along the outside of the fixed collar and the protrusion. A first spring is sleeved on the outside of the drive rod, and the two ends of the first spring are respectively abutted against the movable collar and one end of the sliding part.

[0010] Preferably, the sliding part includes a mounting sleeve and a ball bearing. The mounting sleeve is coaxially mounted on the end of the drive rod away from the push plate, and the ball bearing is automatically movable at one end of the mounting sleeve. The ball bearing can slide along the outside of the fixed collar and the protrusion.

[0011] Preferably, the push plate is provided with limiting rods that extend movably into the inner side of the movable collar on both sides, and a second spring is sleeved on the outside of the limiting rods. The two ends of the second spring are respectively abutted against the inner side of the push plate and the U-shaped groove.

[0012] Preferably, a servo motor is installed on the outside of the processing box, and the output shaft of the servo motor is connected to the center drive of the movable collar.

[0013] Preferably, the first discharge port and the second discharge port are arranged at intervals in a clockwise direction with the center of the processing box as the reference, and the diameter of the first discharge port is smaller than the diameter of the second discharge port.

[0014] The advantages of this utility model compared to the prior art are:

[0015] 1. This utility model achieves smooth unloading of steel balls and improves unloading efficiency through the rotational conveying of the movable collar, the directional receiving of the U-shaped guide trough, the triggering cooperation between the drive rod and the protrusion, and the active pushing of the push plate.

[0016] 2. This utility model can actively push steel balls through the cooperation of push plate, limit rod, protrusion and first spring, so as to ensure that steel balls can move stably with U-shaped guide chute and be discharged from the corresponding first discharge port or second discharge port, thereby improving unloading efficiency. Attached Figure Description

[0017] Figure 1This is a three-dimensional structural diagram of an automatic steel ball unloading device for a ball mill according to this utility model.

[0018] Figure 2 This is a structural cross-sectional view of an automatic steel ball unloading device for a ball mill according to this utility model.

[0019] Figure 3 This is a three-dimensional structural cross-sectional view of an automatic steel ball unloading device for a ball mill according to this utility model.

[0020] Figure 4 This is an exploded view of the structure of an automatic steel ball unloading device for a ball mill according to this utility model.

[0021] Figure 5 This is a partial three-dimensional structural diagram of an automatic steel ball unloading device for a ball mill according to the present invention.

[0022] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0023] Figure 7 This is a partial three-dimensional structural diagram of the push plate, drive rod, and protrusion of an automatic steel ball unloading device for a ball mill according to this utility model.

[0024] The following are the labels in the diagram: 1. Processing box; 11. Feed pipe; 12. First discharge port; 13. Second discharge port; 14. Servo motor; 2. Fixed collar; 21. Slide groove; 3. Movable collar; 31. Inverted U-shaped baffle; 311. U-shaped guide groove; 4. Push plate; 41. Drive rod; 42. First spring; 43. Limiting rod; 44. Second spring; 5. Protrusion; 6. Sliding part; 61. Mounting sleeve; 62. Ball bearing; 7. Bracket. Detailed Implementation

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] Reference Figures 1 to 4 As shown: An automatic steel ball unloading device for a ball mill includes a support 7 and a processing box 1 vertically mounted on the support 7. The processing box 1 is a hollow rotating body structure. The top of the processing box 1 is provided with a feed pipe 11. The bottom two sides of the processing box 1 are symmetrically provided with a first discharge port 12 and a second discharge port 13. A fixed collar 2 is provided at the center of the interior of the processing box 1. A movable collar 3 that can rotate around the circumference of the fixed collar 2 is provided outside the fixed collar 2. A gap is provided between the movable collar 3 and the fixed collar 2. The movable collar 3 can rotate around the circumference of the fixed collar 2.

[0027] The movable collar 3 is provided with multiple inverted U-shaped baffles 31 that are evenly distributed along its circumference. A U-shaped guide groove 311 for accommodating steel balls is provided between adjacent inverted U-shaped baffles 31. The U-shaped guide groove 311 can be connected to the feed pipe 11, the first discharge port 12 and the second discharge port 13 in sequence.

[0028] At the deepest part of the U-shaped guide trough 311, there is a push plate 4 for pushing steel balls. The inner side of the push plate 4 is provided with a drive rod 41 that can extend movably to the outside of the fixed collar 2 and slide along its circumference. The outside of the fixed collar 2 is provided with a protrusion 5 that can cooperate with one end of the drive rod 41 near the first discharge port 12 and the second discharge port 13. When one end of the drive rod 41 cooperates with the protrusion 5, the push plate 4 will push the steel ball and guide the steel ball to be discharged from the first discharge port 12 or the second discharge port 13.

[0029] The steel ball falls into the processing box 1 from the feed pipe 11 at the top of the processing box 1. At this time, the movable collar 3 is in the initial rotation position, and one of the U-shaped guide grooves 311 is connected to the feed pipe 11. The steel ball enters the U-shaped guide groove 311 under the action of gravity, and the feeding is completed.

[0030] The movable collar 3 rotates along the circumference of the fixed collar 2, causing all the U-shaped guide grooves 311 to move in a circular motion synchronously.

[0031] The U-shaped guide trough 311 under load rotates with the movable collar 3, and the steel balls inside the U-shaped guide trough 311 are conveyed from the feed pipe 11 to the first discharge port 12 and the second discharge port 13. The remaining empty U-shaped guide troughs 311 move to the bottom of the feed pipe 11 in sequence to continuously receive new steel balls, thus realizing a cycle of continuous feeding and conveying.

[0032] When the U-shaped guide trough 311 carrying the steel ball rotates with the movable collar 3 to the position of the first discharge port 12 or the second discharge port 13, the guide trough docks with the corresponding first discharge port 12 or second discharge port 13, and the discharge action is triggered at this time.

[0033] The drive rod 41 inside the push plate 4 of the U-shaped guide trough 311 rotates with the movable collar 3, and one end of it gradually approaches the protrusion 5 outside the fixed collar 2 and contacts the protrusion 5.

[0034] The protrusion 5 generates a radial thrust on the drive rod 41, forcing the drive rod 41 to slide along the circumference of the fixed collar 2, while driving the push plate 4 to move towards the opening of the U-shaped guide groove 311, that is, to push it towards the first discharge port 12 or the second discharge port 13.

[0035] The pusher plate 4 pushes the steel ball in the guide trough, pushing the steel ball out from the first discharge port 12 or the second discharge port 13 to complete the unloading.

[0036] If the U-shaped guide chute 311 is connected to the first discharge port 12, the push plate 4 pushes the steel ball out from the first discharge port 12; if it is connected to the second discharge port 13, the ball is discharged from the second discharge port 13, thus achieving directional unloading from different discharge ports.

[0037] After the material is discharged, the movable collar 3 continues to rotate, the drive rod 41 separates from the protrusion 5, and the push plate 4 returns to the deepest part of the U-shaped guide trough 311 under its own reset action, in preparation for receiving the next steel ball. At the same time, the next U-shaped guide trough 311 that carries the steel ball moves to the position of the first discharge port 12 or the second discharge port 13, and repeats the above discharge process to achieve continuous automatic unloading.

[0038] In summary, through the rotational conveying of the movable collar 3, the directional receiving of the U-shaped guide trough 311, the triggering cooperation between the drive rod 41 and the protrusion 5, and the active pushing of the push plate 4, the steel balls can be smoothly unloaded, thus improving the unloading efficiency.

[0039] Reference Figures 5 to 6 As shown: The end of the drive rod 41 near the fixed collar 2 is connected to a sliding part 6 that can slide along the outside of the fixed collar 2 and the protrusion 5. A first spring 42 is sleeved on the outside of the drive rod 41, and the two ends of the first spring 42 are respectively abutted against the movable collar 3 and one end of the sliding part 6.

[0040] When the movable collar 3 drives the U-shaped guide trough 311 to rotate to the first discharge port 12 or the second discharge port 13, the sliding part 6 connected to the end of the drive rod 41 near the fixed collar 2 moves synchronously with the movable collar 3 and gradually contacts the protrusion 5 on the outside of the fixed collar 2.

[0041] The protrusion 5 is in the shape of a protrusion, and its height is higher than the outer surface of the fixed collar 2. When the sliding part 6 slides along the outer surface of the fixed collar 2 to the protrusion 5, the protrusion 5 generates a radial outward thrust on the sliding part 6, forcing the sliding part 6 to drive the limiting rod 43 to move inward to the U-shaped guide groove 311.

[0042] During the process of the sliding part 6 contacting and being pushed away from the protrusion 5, the two ends of the first spring 42 sleeved outside the drive rod 41 abut against the movable collar 3 and the sliding part 6 respectively. At this time, the movement of the sliding part 6 will compress the first spring 42, so that the spring is in a stored state.

[0043] As the movable collar 3 continues to rotate, the sliding part 6 passes over the protrusion 5 and returns to the outer surface of the fixed collar 2, the thrust of the protrusion 5 on the sliding part 6 disappears.

[0044] The first spring 42 releases its stored elastic potential energy, generating a reverse thrust that pushes the sliding part 6 back to its original position along the outer surface of the fixed collar 2. At the same time, it drives the limiting rod 43 and the push plate 4 back to the deepest part of the U-shaped guide groove 311 and back to their initial positions, preparing for the next receiving and pushing of steel balls.

[0045] Reference Figure 6 As shown: The sliding part 6 includes a mounting sleeve 61 and a ball 62. The mounting sleeve 61 is coaxially mounted on the end of the drive rod 41 away from the push plate 4. The ball 62 is automatically movable and is located at one end of the mounting sleeve 61. The ball 62 can slide along the outside of the fixed collar 2 and the protrusion 5.

[0046] Mounting sleeve 61 is coaxially fixed to the end of drive rod 41 away from push plate 4. Ball 62 is freely rolled and embedded in mounting sleeve 61. When movable collar 3 drives drive rod 41 to rotate, ball 62 first rolls along the outer cylindrical surface of fixed collar 2. At this time, under the action of first spring 42, drive rod 41 remains close to fixed collar 2, and push plate 4 is at the deepest part of U-shaped guide groove 311.

[0047] When the movable collar 3 rotates to a specific position, the ball 62 contacts the protrusion 5 on the fixed collar 2. The protrusion 5 forces the ball 62 to roll upward along its contour, which in turn drives the mounting sleeve 61 to push the drive rod 41 to move outward against the elastic force of the first spring 42. The drive rod 41 simultaneously drives the push plate 4 to slide forward in the U-shaped guide groove 311 to push the steel ball to the first discharge port 12 or the second discharge port 13.

[0048] As the movable collar 3 continues to rotate, the ball 62 passes over the protrusion 5 and re-contacts the flat surface of the fixed collar 2. The first spring 42 releases its elastic potential energy to push the drive rod 41 back to the fixed collar 2. The ball 62 rolls back to its initial position along the surface of the fixed collar 2, and the push plate 4 also retracts to the deepest part of the U-shaped guide groove 311, completing one cycle. The entire process uses the rolling friction of the ball 62 to replace the sliding friction, reducing frictional resistance and energy loss, and ensuring the smooth and reliable triggering and resetting of the push plate 4.

[0049] Reference Figure 2 and Figure 7 As shown: The outer side of the fixed collar 2 is provided with a groove 21 for the movement of the ball 62, and the protrusion 5 is provided in the groove 21.

[0050] When the movable collar 3 drives the drive rod 41 and the sliding part 6 to rotate, the ball 62 moves smoothly in the groove 21;

[0051] When the ball 62 rolls to the protrusion 5 in the groove 21, the protrusion 5 forces the ball 62 to roll upward along its contour, thereby pushing the mounting sleeve 61 and the drive rod 41 to move outward against the elastic force of the first spring 42, and driving the push plate 4 to push the steel ball to the first discharge port 12 and the second discharge port 13 in the U-shaped guide groove 311.

[0052] As the movable collar 3 continues to rotate, after the ball 62 passes the protrusion 5, under the elastic force of the first spring 42, the ball 62 returns to its original position along the slide groove 21. The drive rod 41 and the push plate 4 also reset accordingly. The slide groove 21 not only restricts the movement direction of the ball 62 to prevent it from deviating from the preset path, but also further reduces the friction interference between the ball 62 and the fixed collar 2. Together with the protrusion 5, it realizes the precise triggering of the push plate 4's action, ensuring the stability and order of the entire unloading process.

[0053] Reference Figure 6 and Figure 7 As shown: The push plate 4 is provided with limiting rods 43 on both sides that extend into the inner side of the movable collar 3. The limiting rods 43 are fitted with a second spring 44. The two ends of the second spring 44 are respectively abutted against the inner side of the push plate 4 and the U-shaped guide groove 311.

[0054] When the device is in normal operation, the second spring 44 is in a natural or pre-compressed state, which stabilizes the push plate 4 at the deepest part of the U-shaped guide trough 311, and the limit rod 43 prevents the push plate 4 from moving accidentally due to vibration or steel ball impact.

[0055] When the drive rod 41 contacts the protrusion 5 on the fixed collar 2 to trigger unloading, the push plate 4 is pushed towards the discharge port by the limiting rod 43 and compresses the second spring 44. The spring stores elastic potential energy, and at the same time, the sliding guide of the limiting rod 43 ensures that the push plate 4 moves smoothly in a straight line.

[0056] After unloading is completed, the drive rod 41 passes over the protrusion 5, the second spring 44 releases its elastic potential energy to push the push plate 4 to quickly reset, and the limit rod 43 limits the maximum stroke to prevent excessive rebound.

[0057] Reference Figure 4 As shown: A servo motor 14 is installed on the outside of the processing box 1, and the output shaft of the servo motor 14 is connected to the center of the movable collar 3 via transmission.

[0058] The servo motor 14 serves as a power source, and its output shaft is connected to the center of the movable collar 3. When the servo motor 14 starts, it drives the movable collar 3 to rotate around the circumference of the fixed collar 2.

[0059] Reference Figure 2 As shown: the first discharge port 12 and the second discharge port 13 are distributed clockwise along the processing box 1, and the diameter of the first discharge port 12 is smaller than the diameter of the second discharge port 13.

[0060] When the movable collar 3 drives the U-shaped guide trough 311 to rotate clockwise, the steel balls first pass through the first discharge port 12. The smaller steel balls are discharged from the smaller discharge port 12 under the action of the push plate 4, while the larger steel balls, unable to pass through the first discharge port 12, continue to rotate with the guide trough to the second discharge port 13. Then, under the action of the push plate 4 again, they are discharged from the larger discharge port 13, thus realizing the classification and unloading of steel balls of different sizes.

[0061] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An automatic steel ball unloading device for a ball mill, comprising a support (7) and a processing box (1) vertically mounted on the support (7), the processing box (1) being a hollow rotating body structure, the top of the processing box (1) being provided with a feed pipe (11), and the bottom sides of the processing box (1) being symmetrically provided with a first discharge port (12) and a second discharge port (13), characterized in that, A fixed collar (2) is provided at the center of the interior of the processing box (1). A movable collar (3) is provided outside the fixed collar (2) and can rotate around the circumference of the fixed collar (2). There is a gap between the movable collar (3) and the fixed collar (2). The movable collar (3) can rotate around the circumference of the fixed collar (2). The movable collar (3) is provided with multiple inverted U-shaped baffles (31) evenly distributed along its circumference. A U-shaped guide groove (311) for accommodating steel balls is provided between adjacent inverted U-shaped baffles (31). The U-shaped guide groove (311) can be connected to the feed pipe (11), the first discharge port (12), and the second discharge port (13) in sequence. The deepest part of the U-shaped guide trough (311) is provided with a push plate (4) for pushing steel balls. The inner side of the push plate (4) is provided with a drive rod (41) that can extend to the outside of the fixed collar (2) and slide along its circumference. The outside of the fixed collar (2) is provided with a protrusion (5) that can cooperate with one end of the drive rod (41) near the first discharge port (12) and the second discharge port (13). When one end of the drive rod (41) cooperates with the protrusion (5), the push plate (4) will push the steel balls and guide them to be discharged from the first discharge port (12) or the second discharge port (13).

2. The automatic steel ball unloading device for a ball mill according to claim 1, characterized in that, The drive rod (41) is connected to a sliding part (6) at one end near the fixed collar (2), which can slide along the outside of the fixed collar (2) and the protrusion (5). A first spring (42) is sleeved on the outside of the drive rod (41), and the two ends of the first spring (42) are respectively abutted against the movable collar (3) and one end of the sliding part (6).

3. The automatic steel ball unloading device for a ball mill according to claim 2, characterized in that, The sliding part (6) includes a mounting sleeve (61) and a ball (62). The mounting sleeve (61) is coaxially mounted on the end of the drive rod (41) away from the push plate (4). The ball (62) is automatically movable at one end of the mounting sleeve (61). The ball (62) can slide along the outside of the fixed collar (2) and the protrusion (5).

4. The automatic steel ball unloading device for a ball mill according to claim 3, characterized in that, The outer side of the fixed collar (2) is provided with a groove (21) for the movement of the ball (62), and the protrusion (5) is provided in the groove (21).

5. The automatic steel ball unloading device for a ball mill according to claim 1, characterized in that, The push plate (4) is provided with a limiting rod (43) that extends into the inner side of the movable collar (3) on both sides. A second spring (44) is sleeved on the outside of the limiting rod (43). The two ends of the second spring (44) are respectively abutted against the inner side of the push plate (4) and the U-shaped groove.

6. The automatic steel ball unloading device for a ball mill according to claim 1, characterized in that, A servo motor (14) is installed on the outside of the processing box (1), and the output shaft of the servo motor (14) is connected to the center drive of the movable collar (3).

7. The automatic steel ball unloading device for a ball mill according to claim 1, characterized in that, The first discharge port (12) and the second discharge port (13) are arranged at intervals in a clockwise direction with the center of the processing box (1) as the reference. The diameter of the first discharge port (12) is smaller than the diameter of the second discharge port (13).

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