A ball mill discharge device

Abstract

A discharge device for a ball mill belongs to the field of engineering equipment. The connecting shell is fitted onto the outside of the ball mill body, and a sieve plate is fixedly connected to the inner wall of one end of the connecting shell. The sieve plate has a circular hole at its center for fixed connection to a fixed cylinder. A motor is fixedly connected to the inner wall of the fixed cylinder via a bracket. A connecting rod is fixedly connected to the output shaft of the motor, and a transmission rod is fixedly connected to the side of the connecting rod. The free end of the transmission rod is fixedly connected to the rotating cylinder, and the rotating cylinder and the fixed cylinder are connected via bearings. A crossbar is fixedly connected to the outer surface of the rotating cylinder. Each set of separating devices has multiple separating plates, and a gap is provided between two adjacent separating plates for corresponding cylinders to slide. A limiting cylinder is fixedly connected to the inner wall of the connecting shell. This invention is not only easy to install, but also allows the balls to move and collide with each other during use, causing the balls to vibrate and shake off residual material in the gaps between the balls, reducing residue and accelerating the discharge speed.

Description

Technical Field

[0001] This utility model relates to a discharge device for a ball mill, belonging to the field of engineering equipment. Background Technology

[0002] A ball mill is a device that crushes materials by rotating itself and moving the balls inside. Ball mills are divided into dry ball mills and wet ball mills. Dry ball mills are further divided into various sizes according to different needs. One type of small ball mill can be inverted to discharge materials after use with the assistance of lifting rings and lifting equipment. After the ball mill body reaches a horizontal position, the discharge port of the ball mill is first slowly tilted downwards to discharge most of the material. Finally, it is completely inverted to discharge the remaining material. However, in actual operation, because there are multiple balls inside the ball mill body, after the ball mill is inverted, the balls will block the screen plate at the discharge port, affecting the efficiency of the remaining material discharge. Therefore, it is necessary to improve this method. Utility Model Content

[0003] The purpose of this invention is to solve the aforementioned problems in the background art and to provide a discharge device for a ball mill.

[0004] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0005] A discharge device for a ball mill includes a connecting shell; the connecting shell is fitted onto the outside of the ball mill body, and a sieve plate is fixedly connected to the inner wall of one end of the connecting shell; the center of the sieve plate has a circular hole for fixed connection with a fixed cylinder; a motor is fixedly connected to the inner wall of the fixed cylinder via a bracket; a connecting rod is fixedly connected to the output shaft of the motor, and a transmission rod is fixedly connected to the side of the connecting rod; the free end of the transmission rod is fixedly connected to a rotating cylinder, and the rotating cylinder and the fixed cylinder are connected by a bearing; a horizontal bar is fixedly connected to the outer circumference of the rotating cylinder; multiple vertical bars are fixedly connected to the lower end of the horizontal bar; the lower end of the vertical bar is fixedly connected to the corresponding cylinder body; the lower end face of the cylinder body contacts the upper end face of the sieve plate; multiple sets of centrally symmetrical partitioning devices are fixedly connected to the upper end face of the sieve plate, each set of partitioning devices has multiple partition plates, and a gap is provided between two adjacent partition plates for the corresponding cylinder body to slide; a limiting cylinder is fixedly connected to the inner wall of the connecting shell.

[0006] Furthermore, one end of the connecting shell is provided with a notch, and ear plates are symmetrically fixedly connected to the inner wall of the notch. Sliding grooves are provided on the opposite surfaces of the two ear plates. Each sliding groove is slidably engaged with a slider located inside it, and a movable baffle is fixedly connected to the slider. The ear plates are also provided with through holes, and limit rods are inserted into the through holes. The side of the ball mill body is provided with a base connected to the lifting ring, and the base is located in the gap between the notch and the movable baffle.

[0007] Furthermore, the sieve plate is provided with multiple quadrangular pyramidal sieve holes.

[0008] Furthermore, the diameter of the small-diameter end of the pyramidal sieve aperture is smaller than the diameter of the smallest sphere inside the ball mill body.

[0009] Furthermore, the cylinder is provided in multiple parts, and the diameters of the multiple cylinders are different.

[0010] Furthermore, a helical rod is fixedly connected to the outer circumference of each of the cylinders and rotating cylinders; the side of the partition plate is provided with a groove for the helical rod to pass through.

[0011] Furthermore, the included angle between the projections of the two ends of the helical rod onto the horizontal plane is less than 360°.

[0012] Furthermore, the cross-section of the helical rod is triangular.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this utility model is not only easy to install, but also can drive the balls to move and collide with each other during use, causing the balls to vibrate and shake off the residual material in the gaps between the balls, reducing residue and speeding up the extraction speed. Attached Figure Description

[0014] Figure 1 This is a front sectional view of a discharge device for a ball mill according to this utility model;

[0015] Figure 2 This is a top view of the connecting shell of a discharge device for a ball mill according to this utility model;

[0016] Figure 3 This is a top view of the sieve plate, cylinder and partition plate of a discharge device for a ball mill according to this utility model;

[0017] Figure 4 This is a front view of the sieve plate and partition plate of the unloading device for a ball mill according to this utility model;

[0018] Figure 5 This is a top view of the cylinder and screw rod of a discharge device for a ball mill according to this utility model;

[0019] Figure 6 This is a front view of the cylinder and screw rod of a discharge device for a ball mill according to this utility model.

[0020] In the diagram: 1. Ball mill body; 2. Connecting shell; 3. Limiting cylinder; 4. Screen plate; 5. Screen hole; 6. Fixed cylinder; 7. Motor; 8. Cylinder; 9. Divider plate; 10. Groove; 11. Spiral rod; 12. Horizontal bar; 13. Vertical bar; 14. Rotary drum; 15. Transmission rod; 16. Connecting rod; 17. Base; 18. Lifting ring; 19. Movable baffle; 20. Ear plate; 21. Slide groove; 22. Limiting rod; 23. Sliding block. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0022] Specific implementation method one: as follows Figure 1-6 As shown, this embodiment describes a discharge device for a ball mill, including a connecting shell 2; the connecting shell 2 is sleeved on the outside of the ball mill body 1, and a sieve plate 4 is fixedly connected to the inner wall of one end of the connecting shell 2; the center of the sieve plate 4 is provided with a circular hole fixedly connected to a fixed cylinder 6; a motor 7 is fixedly connected to the inner wall of the fixed cylinder 6 by a bracket; a connecting rod 16 is fixedly connected to the output shaft of the motor 7, and a transmission rod 15 is fixedly connected to the side of the connecting rod 16; the free end of the transmission rod 15 is fixedly connected to a rotating cylinder 14, and the rotating cylinder 14 is fixedly connected to the fixed cylinder 6. The cylinder 6 is connected via bearings; a crossbar 12 is fixedly connected to the outer circumference of the rotating cylinder 14; multiple vertical rods 13 are fixedly connected to the lower end of the crossbar 12; the lower end of the vertical rod 13 is fixedly connected to the corresponding cylinder body 8; the lower end face of the cylinder body 8 contacts the upper end face of the sieve plate 4; multiple sets of centrally symmetrical separating devices are fixedly connected to the upper end face of the sieve plate 4, each set of separating devices is provided with multiple separating plates 9, and a gap is provided between two adjacent separating plates 9 for the corresponding cylinder body 8 to slide; a limiting cylinder 3 is fixedly connected to the inner wall of the connecting outer shell 2. The limiting cylinder 3 is used to prevent the ball from contacting the connecting outer shell 2.

[0023] The gaps between adjacent cylinders 8, between cylinder 8 and rotating cylinder 14, and between cylinder 8 and limiting cylinder 3 are all equal and greater than the diameter of the largest ball inside the ball mill body 1.

[0024] One end of the connecting shell 2 is provided with a notch, and ear plates 20 are symmetrically fixedly connected to the inner wall of the notch. Sliding grooves 21 are provided on the opposite surfaces of the two ear plates 20. Each sliding groove 21 is slidably engaged with a slider 23 located inside it, and a movable baffle 19 is fixedly connected to the slider 23. The ear plates 20 are also provided with through holes, into which a limiting rod 22 is inserted. The side of the ball mill body 1 is provided with a base 17 connected to the lifting ring 18, and the base 17 is located in the gap between the notch and the movable baffle 19. The movable baffle 19 allows the base 17 to enter the notch and is ultimately fixed by the limiting rod 22 and the movable baffle 19.

[0025] The sieve plate 4 is provided with a plurality of four-sided pyramidal sieve holes 5. The four-sided pyramidal sieve holes 5 can ensure that even if a ball falls into the sieve hole 5, there is still a gap between the ball and the inner wall of the sieve hole 5 for residual material to escape, thus avoiding the sieve hole 5 from being blocked.

[0026] The diameter of the small-diameter end of the pyramidal sieve hole 5 is smaller than the diameter of the smallest ball inside the ball mill body 1. This prevents the smallest diameter ball from falling out of the sieve hole 5.

[0027] The cylinder 8 is provided in multiple parts, and the diameters of the multiple cylinders 8 are different.

[0028] A spiral rod 11 is fixedly connected to the outer circumference of each of the cylinders 8 and the rotating cylinder 14; the side of the partition plate 9 is provided with a groove 10 for the spiral rod 11 to pass through. The rotation of the cylinders 8 and the rotating cylinder 14 drives the spiral rod 11 to rotate, causing the spheres located in the gaps between the cylinders 8 to move and collide with each other, generating vibration. This ensures that residual material is shaken off during vibration, reducing material residue and accelerating the material removal speed. The height of the groove 10 is equal to the height difference between the two ends of the spiral rod 11 to avoid obstructing the rotation of the spiral rod 11.

[0029] The angle between the projections of the two ends of the helical rod 11 onto the horizontal plane is less than 360°.

[0030] The cross-section of the helical rod 11 is triangular.

[0031] The working principle of this utility model is as follows: When using this device, the cover at the top of the ball mill body 1 is removed when the ball mill body 1 is placed upright. Then, the connecting shell 2 is fitted onto the upper end of the ball mill body 1, and the base 17 is placed in the notch of the connecting shell 2. Then, the movable baffle 19 is pushed to press against the outer wall of the ball mill body 1, and the limiting rod 22 is inserted into the round hole of the ear plate 20 to complete the installation. Then, the lifting equipment and the lifting ring 18 are lifted, and the ball mill body 1 is inverted to reach the top. Figure 1 The state shown;

[0032] After the ball mill body 1 is inverted, the balls fall into the gaps between the cylinders 8 under the action of gravity. Since there are gaps between the balls in the ball mill body 1, residual materials can pass through. At the same time, the screen holes 5 are square pyramidal, and when the balls fall into the screen holes 5, there are also gaps between the balls and the inner wall of the screen holes 5 for residual materials to pass through, forming a discharge channel. Then the motor 7 is started. The motor 7 drives the connecting rod 16 and the transmission rod 15 to rotate. The transmission rod 15 drives the rotating drum 14 to rotate. The rotating drum 14 drives the vertical rod 13 to rotate through the horizontal rod 12, and then drives each cylinder 8 to rotate through the vertical rod 13. During the rotation of the cylinder 8 and the rotating drum 14, since there is a spiral rod 11 on its outer circumference, the spiral rod 11 also rotates. At the end of the spiral rod 11 with a lower height ( Figure 1 During the rotation (as shown in the left position), the sphere close to it is pushed to a different position. Due to the multiple partition plates 9, the sphere cannot rotate continuously with the cylinder 8 and the rotating cylinder 14. This causes the sphere to move towards the larger diameter sphere as the screw rod 11 rotates. Figure 1 The upward movement in the indicated direction causes the small-diameter spheres to move upward or away from the screw rod 11. As the small-diameter spheres move, empty space is created in their original positions. As the screw rod 11 rotates, after it detaches from the small-diameter spheres, the spheres move back to their original positions under gravity or are filled by spheres in other positions. The collisions between the spheres generate vibrations, shaking off residual material. The central angle corresponding to the screw rod 11 is less than 360°. When the large-diameter sphere moves upward with the screw plate 11 to the highest point of the screw plate 11, it detaches from the screw plate 11 and falls downward under gravity. It will also collide with other spheres, generating vibrations and shaking off residual material. This allows the residual material to move downward through the gaps between the spheres and exit through the sieve holes 5.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A discharge device for a ball mill, characterized in that: The system includes a connecting shell (2); the connecting shell (2) is fitted around the outside of the ball mill body (1), and a sieve plate (4) is fixedly connected to the inner wall of one end of the connecting shell (2); the center of the sieve plate (4) is provided with a round hole that is fixedly connected to the fixed cylinder (6); a motor (7) is fixedly connected to the inner wall of the fixed cylinder (6) by a bracket; a connecting rod (16) is fixedly connected to the output shaft of the motor (7), and a transmission rod (15) is fixedly connected to the side of the connecting rod (16); the free end of the transmission rod (15) is fixedly connected to the rotating cylinder (14), and the rotating cylinder (14) and the fixed cylinder (6) are connected by a bearing. A horizontal bar (12) is fixedly connected to the outer circular surface of the rotating cylinder (14); a plurality of vertical bars (13) are fixedly connected to the lower end of the horizontal bar (12); the lower end of the vertical bar (13) is fixedly connected to the corresponding cylinder (8); the lower end face of the cylinder (8) is in contact with the upper end face of the sieve plate (4); a plurality of centrally symmetrical partition devices are fixedly connected to the upper end face of the sieve plate (4), each partition device is provided with a plurality of partition plates (9), and a gap is provided between two adjacent partition plates (9) for the corresponding cylinder (8) to slide; a limiting cylinder (3) is fixedly connected to the inner wall of the connecting shell (2).

2. The unloading device for a ball mill according to claim 1, characterized in that: One end of the connecting shell (2) is provided with a notch, and ear plates (20) are symmetrically fixedly connected to the inner wall of the notch. Slide grooves (21) are provided on the opposite surfaces of the two ear plates (20). Each slide groove (21) is slidably engaged with a slider (23) located inside it. A movable baffle (19) is fixedly connected to the slider (23). The ear plate (20) is also provided with a through hole, and a limit rod (22) is inserted into the through hole. The side of the ball mill body (1) is provided with a base (17) connected to the lifting ring (18). The base (17) is located in the gap between the notch and the movable baffle (19).

3. The unloading device for a ball mill according to claim 2, characterized in that: The sieve plate (4) is provided with a plurality of quadrangular pyramidal sieve holes (5).

4. The unloading device for a ball mill according to claim 3, characterized in that: The diameter of the small-diameter end of the quadrangular pyramidal sieve hole (5) is smaller than the diameter of the smallest ball inside the ball mill body (1).

5. The unloading device for a ball mill according to claim 1, characterized in that: The cylinder (8) is provided in multiple forms, and the diameters of the multiple cylinders (8) are different.

6. The unloading device for a ball mill according to claim 5, characterized in that: Each of the cylinders (8) and the rotating cylinder (14) has a fixed screw rod (11) on its outer circular surface; the side of the partition plate (9) is provided with a groove (10) for the screw rod (11) to pass through.

7. A discharge device for a ball mill according to claim 6, characterized in that: The angle between the projections of the two ends of the helical rod (11) onto the horizontal plane is less than 360°.

8. A discharge device for a ball mill according to claim 6, characterized in that: The cross-section of the helical rod (11) is triangular.

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