Automatic grading and replenishing structure for ball mill grinding media

Abstract

The utility model discloses a ball mill grinding medium automatic grading supplementary structure, including ball box, the bottom of ball box is equipped with the lifting frame, the inside of ball box is divided into a plurality of single room through the baffle, and the discharge port of each single room first end bottom is connected the conveying mechanism through the valve rod subassembly, and the inside hinged vibration plate bottom of discharge port, and the grinding ball is placed on the vibration plate, and the both sides of vibration plate gap fit with the single room inboard wall, and the vibration plate bottom surface is contacted with the cam assembly, and the vibration plate top end is located single room tail end top surface inlet port directly below, the structure's each single room can place the grinding ball of different model, and the grinding ball enters the conveying mechanism under the control of valve rod subassembly, and then is fed to the ball mill on the conveying mechanism, and the vibration plate in the device can drive under the cam assembly and assist feeding, and the lifting frame can adjust the height of ball box to adapt to different model ball mill, has the characteristics such as convenient, efficient.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, specifically to an automatic classification and replenishment structure for grinding media in a ball mill. Background Technology

[0002] A ball mill is a heavy-duty industrial device that uses the rotation of its cylinder to drive internal grinding media (such as steel or ceramic balls) to continuously impact and rub against materials, thereby crushing or grinding lumpy or granular raw materials to the required fineness. It is widely used in mining, cement, building materials, chemical, and metallurgical industries, and is a key piece of equipment for material grinding operations. Ball mills require regular inspection and replacement of the grinding media because, during long-term operation, the grinding media are constantly subjected to impact, friction, and wear, causing them to gradually shrink in size, change shape, or even break. Excessive media wear significantly reduces grinding efficiency (due to insufficient impact force from smaller media), increases energy consumption, and may contaminate the ground material or affect product quality due to excessive debris. Furthermore, when processing different materials or adjusting product fineness requirements, it may be necessary to replace the grinding media with those of different sizes or materials. Therefore, replenishing and replacing worn grinding media is a necessary routine maintenance task to ensure the continuous, efficient, and stable operation of the ball mill. This work is usually done manually, which is time-consuming and labor-intensive, necessitating a specialized grinding media replenishment device to address these issues. Utility Model Content

[0003] To address the aforementioned issues, this utility model proposes an automatic grading and replenishment structure for grinding media in a ball mill. The structure includes a ball box with a lifting frame at the bottom. The ball box is divided into several compartments by partitions. The discharge port at the bottom of each compartment is connected to a conveying mechanism via a valve stem assembly. A vibrating plate is hinged to the bottom of the discharge port. Grinding balls are placed on the vibrating plate. The two sides of the vibrating plate are clearance-fitted with the inner wall of the compartment. The bottom surface of the vibrating plate contacts a cam assembly. The top of the vibrating plate is located directly below the feed inlet at the top surface of the compartment's tail end.

[0004] Furthermore, the lifting frame includes a base frame, with hinge seats on both sides of the tail end of the base frame respectively hinged to the bottom ends of the two lower hinge arms, the top end of the lower hinge arm hinged to the bottom end of the upper hinge arm, the top end of the upper hinge arm hinged to the hinge joint on the bottom surface of the ball box, the lower hinge arm hinged to the middle of the lower sliding arm, the pulley at the bottom end of the lower sliding arm slidably connected to the side sliding groove of the base frame, the top end of the lower sliding arm hinged to the bottom end of the upper sliding arm, the upper sliding arm hinged to the middle of the upper hinge arm, the pulley at the top end of the upper sliding arm slidably connected to the slide rail on the bottom surface of the ball box, the connecting rod between the lower sliding arms hinged to the end of the lifting cylinder body, and the end of the piston rod of the lifting cylinder hinged to the connecting rod between the upper sliding arms.

[0005] Furthermore, the valve stem assembly includes a valve stem cylinder, the cylinder body of which is mounted on the outer wall of the discharge hopper at the bottom of the first end of the unit. The upper opening of the discharge hopper is connected to the discharge port of the unit, and the lower opening of the discharge hopper is connected to the conveying mechanism. The piston rod of the valve stem cylinder can extend into the discharge hopper to obstruct the passage of grinding balls.

[0006] Furthermore, the conveying mechanism includes a conveying cylinder, the top of which connects to each compartment. A conveying motor is installed at the front end of the conveying cylinder, and the spiral shaft of the conveying motor extends into the interior of the conveying cylinder and exits through the open end of the conveying cylinder.

[0007] Furthermore, the cam assembly includes a vibration motor, which is mounted on the outer wall of the ball box. The output shaft of the vibration motor extends into the ball box and is rotatably connected to the partition of each chamber. The output shaft is provided with cams, and each cam contacts the bottom surface of the corresponding vibration plate.

[0008] Furthermore, the front of the ball box has several through slots, which correspond to the individual chambers. The width of the through slots is smaller than the diameter of the grinding balls. The feed inlet of each individual chamber is hinged to the box door, and the inner side wall of the tail end of each individual chamber is provided with a ramp, the bottom surface of which is spaced and fitted with the top of the vibrating plate.

[0009] The beneficial effects of this utility model are as follows: Different types of grinding balls can be placed in each compartment, and the remaining amount of balls in each compartment can be observed through the through-slot. The grinding balls enter the conveying cylinder under the control of the valve stem cylinder, and are then fed into the ball mill by the conveying motor. The vibrating plate in the device can assist in feeding under the drive of the cam assembly, and the lifting frame can adjust the height of the ball box, thus adapting to different types of ball mills. It features convenience and high efficiency. Attached Figure Description

[0010] Figure 1 This is a front view structural diagram of the present utility model;

[0011] Figure 2 This is a side view of the structure of this utility model.

[0012] The reference numerals in the attached drawings are explained as follows: 1. Ball box; 101. Single compartment; 102. Hinge joint; 103. Slide rail; 104. Discharge hopper; 105. Through groove; 106. Slope; 2. Vibrating plate; 3. Grinding ball; 4. Base frame; 401. Hinge seat; 402. Side slide groove; 5. Lower hinge arm; 6. Upper hinge arm; 7. Lower slide arm; 8. Upper slide arm; 9. Lifting cylinder; 10. Valve stem cylinder; 11. Conveying cylinder; 12. Conveying motor; 1201. Screw shaft; 13. Vibrating motor; 1301. Cam; 14. Box door. Detailed Implementation

[0013] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] like Figure 1 and Figure 2 As shown, the automatic grading and replenishment structure for grinding media in a ball mill includes a ball box 1. A lifting frame is located at the bottom of the ball box 1. The lifting frame includes a base frame 4. Two hinge seats 401 at the tail end of the base frame 4 are respectively hinged to the bottom ends of two lower hinge arms 5. The top end of the lower hinge arm 5 is hinged to the bottom end of an upper hinge arm 6. The top end of the upper hinge arm 6 is hinged to a hinge joint 102 on the bottom surface of the ball box 1. The lower hinge arm 5 is hinged to the middle of a lower sliding arm 7. A pulley at the bottom end of the lower sliding arm 7 is slidably connected to a side sliding groove 402 of the base frame 4. The top end of the lower sliding arm 7 is hinged to the bottom end of an upper sliding arm 8. The upper sliding arm 8 is hinged to the middle of the upper hinge arm 6. A pulley at the top end of the upper sliding arm 8 is slidably connected to a slide rail 103 on the bottom surface of the ball box 1. A connecting rod between the lower sliding arms 7 is hinged to the end of the cylinder body of a lifting cylinder 9. The piston rod end of the lifting cylinder 9 is hinged to a connecting rod between the upper sliding arms 8. When the lifting cylinder 9 extends, the lifting frame lifts the ball box 1 upwards; when the lifting cylinder 9 retracts, the lifting frame lifts the ball box 1 downwards.

[0017] In this embodiment, the ball box 1 is divided into several compartments 101 by partitions. Each compartment 101 is equipped with a valve stem assembly at its discharge port. The valve stem assembly includes a valve stem cylinder 10. The cylinder body of the valve stem cylinder 10 is installed on the outer wall of the discharge hopper 104 at the bottom of the first end of the compartment 101. The piston rod of the valve stem cylinder 10 can extend into the discharge hopper 104 to obstruct the passage of the grinding balls 3. The upper opening of the discharge hopper 104 is connected to the discharge port of the compartment 101, and the lower opening of the discharge hopper 104 is connected to the top of the conveying cylinder 11 in the conveying mechanism. A conveying motor 12 is installed at the first end of the conveying cylinder 11. The spiral shaft 1201 of the conveying motor 12 extends into the interior of the conveying cylinder 11 and exits from the open end of the conveying cylinder 11.

[0018] In this embodiment, the bottom end of the vibrating plate 2 is hinged to the inner side of the discharge port. Grinding balls 3 are stacked on the vibrating plate 2 in the single compartment 101. The two sides of the vibrating plate 2 are clearance-fitted with the inner sidewall of the single compartment 101. The bottom surface of the vibrating plate 2 is fitted with a cam assembly. The cam assembly includes a vibrating motor 13, which is mounted on the outer sidewall of the ball box 1. The output shaft of the vibrating motor 13 extends into the ball box 1 and is rotatably connected to the partition of each single compartment 101. The output shaft is provided with a cam 1301, and each cam 1301 contacts the bottom surface of the corresponding vibrating plate 2. The top of the vibrating plate 2 is located directly below the feed inlet on the top surface of the tail end of the single compartment 101. The feed inlet is hinged to the box door 14. The inner sidewall of the tail end of the single compartment 101 is provided with a ramp 106, and the bottom surface of the ramp 106 is spacedly fitted with the top of the vibrating plate 2. The ball box 1 has several through slots 105 on the front. The through slots 105 correspond to the individual chambers 101. The width of the through slots 105 is smaller than the diameter of the grinding ball 3. The internal condition of each individual chamber 101 can be observed through the through slots 105.

[0019] The working principle of this utility model is as follows:

[0020] Open the chamber door 14 and pour the corresponding type of grinding balls 3 into each compartment 101. After feeding, start the lifting cylinder 9 to push the lifting frame to a suitable height so that the open end of the conveying cylinder 11 is aligned with the ball mill feed port. Open the valve stem assembly of the target compartment 101. The valve stem cylinder 10 at this location will retract the piston rod into the cylinder body to release the channel in the discharge hopper 104. The grinding balls 3 in the compartment 101 will fall into the conveying cylinder 11. Start the conveying motor 12 to drive the spiral shaft 1201 to rotate. The spiral shaft 1201 feeds the grinding balls 3 into the ball mill. During the feeding process, the vibration motor 13 can be started to drive the vibration plate 2 to shake up and down, thereby helping the grinding balls 3 to enter the conveying cylinder 11 more smoothly. After feeding, first reset the valve stem cylinder 10 to close the channel, and then continue to rotate the spiral shaft 1201 for a period of time to ensure that all the grinding balls 3 in the conveying cylinder 11 have entered the ball mill.

[0021] Different types of grinding balls 3 can be placed in each compartment 101 of this utility model. The grinding balls 3 enter the conveying mechanism under the control of the valve stem assembly, and are then fed into the ball mill by the conveying mechanism. The vibrating plate 2 in the device can assist in feeding under the drive of the cam assembly. The lifting frame can adjust the height of the ball box 1 to adapt to different types of ball mills, which has the characteristics of convenience and high efficiency.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An automatic classification and replenishment structure for grinding media in a ball mill, comprising a ball box (1), characterized in that: The ball box (1) is equipped with a lifting frame at the bottom. The ball box (1) is divided into several single rooms (101) by partitions. The discharge port at the bottom of the first end of each single room (101) is connected to the conveying mechanism through a valve stem assembly. The bottom end of the vibrating plate (2) is hinged to the inner side of the discharge port. Grinding balls (3) are placed on the vibrating plate (2). The two sides of the vibrating plate (2) are in clearance fit with the inner side wall of the single room (101). The bottom surface of the vibrating plate (2) is in contact with the cam assembly. The top of the vibrating plate (2) is located directly below the feed port at the top surface of the tail end of the single room (101).

2. The automatic classification and replenishment structure for ball mill grinding media according to claim 1, characterized in that: The lifting frame includes a base frame (4), with hinge seats (401) on both sides of the tail end of the base frame (4) respectively hinged to the bottom ends of two lower hinge arms (5), the top end of the lower hinge arm (5) hinged to the bottom end of the upper hinge arm (6), the top end of the upper hinge arm (6) hinged to the bottom hinge joint (102) of the ball box (1), the lower hinge arm (5) hinged to the middle of the lower sliding arm (7), the pulley at the bottom end of the lower sliding arm (7) slidably connected to the side sliding groove (402) of the base frame (4), the top end of the lower sliding arm (7) hinged to the bottom end of the upper sliding arm (8), the upper sliding arm (8) hinged to the middle of the upper hinge arm (6), the pulley at the top end of the upper sliding arm (8) slidably connected to the bottom slide rail (103) of the ball box (1), the connecting rod between the lower sliding arms (7) hinged to the end of the cylinder body of the lifting cylinder (9), and the end of the piston rod of the lifting cylinder (9) hinged to the connecting rod between the upper sliding arms (8).

3. The automatic classification and replenishment structure for ball mill grinding media according to claim 1, characterized in that: The valve stem assembly includes a valve stem cylinder (10). The cylinder body of the valve stem cylinder (10) is installed on the outer wall of the discharge hopper (104) at the bottom of the first end of the single chamber (101). The upper opening of the discharge hopper (104) is connected to the discharge port of the single chamber (101), and the lower opening of the discharge hopper (104) is connected to the conveying mechanism. The piston rod of the valve stem cylinder (10) can extend into the discharge hopper (104) to obstruct the passage of the grinding balls (3).

4. The automatic classification and replenishment structure for ball mill grinding media according to claim 1, characterized in that: The conveying mechanism includes a conveying cylinder (11), the top of which is connected to each compartment (101). A conveying motor (12) is installed at the front end of the conveying cylinder (11). The spiral shaft (1201) of the conveying motor (12) extends into the interior of the conveying cylinder (11) and exits through the open end of the conveying cylinder (11).

5. The automatic classification and replenishment structure for ball mill grinding media according to claim 1, characterized in that: The cam assembly includes a vibration motor (13), which is mounted on the outer wall of the ball box (1). The output shaft of the vibration motor (13) extends into the ball box (1) and is rotatably connected to the partition of each compartment (101). The output shaft is provided with a cam (1301), and each cam (1301) contacts the bottom surface of the corresponding vibration plate (2).

6. The automatic classification and replenishment structure for ball mill grinding media according to claim 1, characterized in that: The ball box (1) has several through slots (105) on the front, and the through slots (105) correspond to the single compartments (101). The width of the through slots (105) is smaller than the diameter of the grinding ball (3). The feed inlet of each single compartment (101) is hinged to the box door (14). The inner side wall of the tail end of the single compartment (101) is provided with a ramp (106). The bottom surface of the ramp (106) is spaced and matched with the top of the vibrating plate (2).

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