Ball adding device for mixed ball milling media

Abstract

The utility model provides a ball adding device for mixed ball milling media. The ball adding device comprises a plurality of ball storage chambers, a belt weigher and a plurality of ball shifting devices, the belt weigher is arranged below the ball storage chamber and is used for weighing and conveying the ball milling medium; a ball feeding port is formed in the top of the ball storage chamber, the ball storage chamber comprises a bottom plate, the bottom plate is obliquely arranged and extends to the belt weigher, a ball outlet is formed in the side face of the ball storage chamber, and the ball outlet is close to the bottom plate, so that a ball milling medium in the ball storage chamber can freely roll to the belt weigher from the ball outlet along the bottom plate; the plurality of ball shifting devices and the plurality of ball storage chambers are arranged in a one-to-one correspondence manner, the ball shifting devices are arranged at the ball outlets, and the ball shifting devices are used for shifting ball milling media at the ball outlets to the belt weigher. The device is used for ball mills using different ball milling media, the adding quantity of the different ball milling media can be controlled, and manpower consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of adding balls to a ball mill, in particular to a ball adding device for mixing ball milling media. Background Art

[0002] The ball milling media used in traditional ball mills have a relatively large specific gravity and may cause certain pollution to the target product. In recent years, new ball milling media have developed rapidly, but they cannot completely replace traditional ball milling media. Therefore, different types of ball milling media need to be used to reduce the pollution to the target product. Due to the changes in the types and sizes of ball milling media, traditional ball milling machines can only add one type of ball milling media, and cannot effectively separate different ball milling media, and cannot achieve accurate addition of different ball milling media. Summary of the invention

[0003] The utility model aims to provide a ball adding device for mixed ball milling media, which is used for a ball mill using different ball milling media, can control the adding quantity of different ball milling media, and reduces the manpower consumption.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a ball adding device for mixed ball milling media, comprising a plurality of ball storage chambers, a belt scale, and a plurality of ball shifting devices;

[0005] The belt scale is arranged below the ball storage chamber and is used to weigh and transport the ball milling medium;

[0006] The top of the ball storage chamber is provided with a ball adding port, the ball storage chamber comprises a bottom plate, the bottom plate is arranged obliquely and extends to the belt scale, the side of the ball storage chamber is provided with a ball outlet, the ball outlet is arranged close to the bottom plate, so that the ball milling media in the ball storage chamber can freely roll along the bottom plate from the ball outlet to the belt scale;

[0007] The plurality of ball-moving devices are arranged in one-to-one correspondence with the plurality of ball storage chambers. The ball-moving devices are arranged at the ball outlets and are used to move the ball-milling media at the ball outlets toward the belt scale.

[0008] Furthermore, the ball-moving device includes a ball-moving motor and a ball-moving impeller, the ball-moving impeller includes a rotating shaft and a plurality of blades, the rotating shaft is fixedly connected to the output shaft of the ball-moving motor, the plurality of blades are evenly arranged along the circumference of the rotating shaft, and the ball-moving impeller is arranged close to the ball outlet, so that part of the ball milling medium can be moved toward the belt scale as the ball-moving impeller rotates.

[0009] Furthermore, a baffle is arranged in the ball storage chamber, one end of the baffle is fixed to the side of the ball storage chamber where the ball outlet is opened, and the other end of the baffle extends downwardly in an inclined manner.

[0010] Further, the other end of the baffle extends downward and obliquely to a position close to the bottom plate, such that only n rows of ball grinding media can pass between the baffle and the bottom plate at the same time.

[0011] Further, it includes a housing. The ball storage chamber, the belt scale, and the ball feeding device are all arranged inside the housing. A ball dropping port is provided at the bottom of the housing, and the ball dropping port is arranged at one end of the belt scale.

[0012] Further, both ends of the rotating shaft are rotatably connected to the housing wall of the housing, and the ball feeding motor is fixed to the outer surface of the housing through a bracket.

[0013] Further, the ball storage chamber is fixedly arranged at the top of the housing, and a window corresponding to the ball adding port is opened at the top of the housing.

[0014] Further, the belt scale includes a belt, a transport motor, and a weighing device. The transport motor is used to drive the belt to move, and the transport motor is fixed to the outer surface of the housing through a bracket.

[0015] Further, a PLC controller is arranged on the housing. The PLC controller is connected to the transport motor and the ball feeding motor, and is used to control the start and stop of the transport motor and the ball feeding motor.

[0016] Further, the PLC controller is connected to the weighing device and is used to receive the weight signal of the ball grinding media. When the cumulative increase in the weight of the ball grinding media on the belt scale is equal to the preset weight, the PLC controller will stop the ball feeding motor.

[0017] Compared with the prior art, the present utility model can achieve the following beneficial effects:

[0018] 1. The present utility model is used for a ball mill using different ball grinding media. By adding different types of ball grinding media into different ball storage chambers, controlling the number of ball grinding media rolling out from the ball storage chamber through the ball feeding device, and weighing through the belt scale, the addition quantity of different ball grinding media can be accurately controlled, reducing the labor consumption.

[0019] 2. The ball feeding device of the present utility model adopts the form of an impeller, and the space size formed by two adjacent blades of the impeller and the bottom plate of the ball storage chamber corresponds to the number of balls fed each time.

[0020] 3. By arranging the baffle, the present utility model can slow down the impact of the ball grinding media on the ball storage chamber when adding the ball grinding media.

[0021] 4. By controlling the distance between the baffle and the bottom plate, the present utility model can control the number of ball grinding media passing between the baffle and the bottom plate, so that the ball grinding media passing through the baffle are neatly arranged, thereby enabling the number of balls fed by the ball feeding device to remain consistent each time.

[0022] 5. By providing a PLC controller in the utility model, it is convenient to control each ball feeding device and belt scale separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the utility model;

[0024] The reference numerals of each component in the drawings are as follows: ball storage chamber 1; baffle 11; ball milling medium 2; ball feeding device 3; rotating shaft 31; blade 32; belt scale 4; conveying motor 41; weighing meter 42; ball milling medium inlet 5. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further describes the utility model in detail with reference to the drawings and specific embodiments, but the embodiments should not be construed as limiting the utility model.

[0026] Embodiment 1

[0027] As Figure 1 shown, this embodiment provides a ball adding device for mixing ball milling media, including a plurality of ball storage chambers 1, a belt scale 4, and a plurality of ball feeding devices 3;

[0028] The belt scale 4 includes a belt, a conveying motor 41, and a weighing device. The conveying motor 41 is used to drive the belt to move. The weighing device includes a weight sensor and a weighing meter 42. The belt scale 4 is arranged below the ball storage chamber 1 and is used to weigh the ball milling medium 2 and convey it to the ball milling medium inlet 5 of the ball mill.

[0029] The ball storage chamber 1 is square. A ball adding port is opened at the top of the ball storage chamber 1. The ball storage chamber 1 includes a bottom plate, and the bottom plate is inclined and extends to the belt scale 4. An outlet is opened on the side of the ball storage chamber 1 close to the ball milling medium inlet 5, and the outlet is arranged close to the bottom plate, so that the ball milling medium 2 in the ball storage chamber 1 can freely roll from the outlet to the belt scale 4 along the bottom plate; a baffle 11 is arranged in the ball storage chamber 1. One end of the baffle 11 is fixed to the side of the ball storage chamber 1 where the outlet is opened, and the other end of the baffle 11 extends downward and obliquely to a position close to the bottom plate. In this embodiment, only two rows of ball milling media 2 can pass through between the baffle 11 and the bottom plate at the same time, so that the ball milling media 2 passing through the baffle 11 are neatly arranged.

[0030] In this embodiment, two ball storage chambers 1 are arranged along the conveying direction of the belt scale 4. A certain distance is set between the bottom plate of the ball storage chamber 1 close to the ball milling medium inlet 5 and the belt scale 4 to prevent the ball milling medium 2 in the other ball storage chamber 1 from being blocked during the transportation by the belt scale 4.

[0031] The ball-moving device 3 includes a ball-moving motor and a ball-moving impeller. The ball-moving impeller includes a rotating shaft 31 and a plurality of blades 32. The rotating shaft 31 is fixedly connected to the output shaft of the ball-moving motor. The plurality of blades 32 are evenly arranged along the circumference of the rotating shaft 31. The ball-moving impeller is arranged close to the ball outlet so that part of the ball-milling medium 2 can be moved to the belt scale 4 as the ball-moving impeller rotates. In this embodiment, two ball-moving devices 3 are provided, and the two ball-moving devices 3 are arranged corresponding to the two ball storage chambers 1. Three blades 32 are provided, and the angle between two adjacent blades 32 is 120°.

[0032] The method of using the mixed ball milling medium adding device is as follows: generally, the weight of the added ball milling medium will reach several hundred kilograms, and it can be added in batches, and the weight of the ball milling medium to be added is evenly divided into n parts, and the weight of each part is used as the preset weight. First, different types of ball milling media 2 are added to the two ball storage chambers 1 respectively, and after the ball milling media 2 in the ball storage chamber 1 rolls to the bottom plate and is blocked by the blades 32, the ball milling media 2 can be added. The ball-moving motor of the ball-moving device 3 on the left is turned on, and the ball-moving impeller slowly rotates to move the ball-milling medium 2 to the belt scale 4, and the data on the weight table 42 of the belt scale 4 is observed. When the preset weight of the ball-milling medium 2 in the ball-storing chamber 1 on the left is reached, the ball-moving motor is turned off, and the transport motor 41 is turned on to transport the ball-milling medium 2 in the ball-storing chamber 1 on the left to the ball mill through the ball-milling medium inlet 5; the ball-moving motor of the ball-moving device 3 on the right is turned on, and the ball-moving impeller slowly rotates to move the ball-milling medium 2 to the belt scale 4, and the data on the weight table 42 of the belt scale 4 is observed. When the preset weight of the ball-milling medium 2 in the ball-storing chamber 1 on the right is reached, the ball-moving motor is turned off, and the transport motor 41 is turned on to transport the ball-milling medium 2 in the ball-storing chamber 1 on the right to the ball mill through the ball-milling medium inlet 5. At this time, the first batch of two ball-milling media 2 is accurately added. In the above process, if the weight requirement cannot be accurately met, the ball-milling medium 2 on the belt scale 4 can be manually increased or decreased after approaching the preset weight.

[0033] Example 2

[0034] Compared with the embodiment 1, the difference of the embodiment 2 is that the outer shell is added. Figure 1 The outer shell is not shown in the figure, and the ball storage chamber 1, the belt scale 4, and the ball moving device 3 are all arranged inside the outer shell. A ball drop port is set at the bottom of the outer shell, and the ball drop port is arranged at one end of the belt scale 4, so that the ball milling medium 2 transported on the belt scale 4 falls into the ball milling medium inlet 5 through the ball drop port.

[0035] The ball storage chamber 1 is fixedly arranged on the top of the shell, and a window corresponding to the ball adding port is opened on the top of the shell.

[0036] The transport motor 41 and the ball-moving motor are both fixed to the outer surface of the housing through brackets.

[0037] Both ends of the rotating shaft 31 are rotatably connected to the shell wall of the shell.

[0038] Example 3

[0039] Compared with Example 2, the difference in Example 3 is only that a PLC controller is added. The PLC controller is connected to the transport motor 41 and the ball feeding motor, and is used to control the start and stop of the transport motor 41 and the ball feeding motor. The PLC controller is also connected to the weighing device and is used to receive the weight signal of the ball milling medium 2. The added ball mass can calculate the cumulative weight increase value through the belt scale 4. After reaching the preset weight, the ball feeding motor is stopped to achieve automatic control without adding in batches, that is, balls can be continuously fed onto the belt scale 4 during the transportation of the belt scale 4. The calculation method of the cumulative weight increase value is as follows: the cumulative weight increase value a is equal to zero in the initial state, and the PLC controller real-time obtains the weight value W measured by the belt scale 4 i , if W i >W i-1 , then let a = a + (W i -W i-1 ), until a is equal to the preset weight, the PLC controller controls the ball feeding motor to stop, where W i represents the i-th weight value obtained.

[0040] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A ball adding device for mixing ball milling media, characterized in that: It comprises a plurality of ball storage chambers (1), a belt scale (4), and a plurality of ball moving devices (3); The belt scale (4) is arranged below the ball storage chamber (1) and is used to weigh and transport the ball milling medium (2); The top of the ball storage chamber (1) is provided with a ball adding port, the ball storage chamber (1) comprises a bottom plate, the bottom plate is arranged obliquely and extends to the belt scale (4), the side of the ball storage chamber (1) is provided with a ball outlet, the ball outlet is arranged close to the bottom plate, so that the ball milling medium (2) in the ball storage chamber (1) can roll freely along the bottom plate from the ball outlet to the belt scale (4); The plurality of ball-moving devices (3) are arranged in one-to-one correspondence with the plurality of ball storage chambers (1); the ball-moving devices (3) are provided at the ball outlets; and the ball-moving devices (3) are used to move the ball milling medium (2) at the ball outlets toward the belt scale (4).

2. The ball adding device for mixed ball milling media according to claim 1, characterized in that: The ball-moving device (3) comprises a ball-moving motor and a ball-moving impeller, wherein the ball-moving impeller comprises a rotating shaft (31) and a plurality of blades (32), wherein the rotating shaft (31) is fixedly connected to the output shaft of the ball-moving motor, and the plurality of blades (32) are evenly arranged along the circumference of the rotating shaft (31). The ball-moving impeller is arranged close to the ball outlet, so that part of the ball milling medium (2) can be moved toward the belt scale (4) as the ball-moving impeller rotates.

3. The device for adding mixed ball mill media according to claim 1, characterized in that: A baffle (11) is arranged in the ball storage chamber (1), one end of the baffle (11) is fixed to the side of the ball storage chamber (1) where a ball outlet is provided, and the other end of the baffle (11) extends downwardly at an angle.

4. The device for adding balls to the mixed ball milling medium according to claim 3, characterized in that: The other end of the baffle (11) extends downwardly at an angle to a position close to the bottom plate, so that only n rows of ball mill media (2) can pass between the baffle (11) and the bottom plate at the same time.

5. The device for adding balls to the mixed ball milling medium according to claim 2, characterized in that: It comprises a shell, wherein the ball storage chamber (1), the belt scale (4) and the ball moving device (3) are all arranged inside the shell, and a ball drop opening is arranged at the bottom of the shell, and the ball drop opening is arranged at one end of the belt scale (4).

6. The device for adding balls to the mixed ball milling medium according to claim 5, characterized in that: The two ends of the rotating shaft (31) are rotatably connected to the shell wall of the shell, and the ball-moving motor is fixed to the outer surface of the shell through a bracket.

7. The device for adding balls to the mixed ball milling medium according to claim 5, characterized in that: The ball storage chamber (1) is fixedly arranged on the top of the shell, and a window corresponding to the ball adding port is opened on the top of the shell.

8. The device for adding balls to the mixed ball milling medium according to claim 5, characterized in that: The belt scale (4) comprises a belt, a transport motor (41) and a weighing device. The transport motor (41) is used to drive the belt to move. The transport motor (41) is fixed to the outer surface of the housing via a bracket.

9. The device for adding balls to the mixed ball milling medium according to claim 8, characterized in that: The housing is provided with a PLC controller, which is connected to the transport motor (41) and the ball-moving motor and is used to control the start and stop of the transport motor (41) and the ball-moving motor.

10. The device for adding balls to the mixed ball milling medium according to claim 9, characterized in that: The PLC controller is connected to the weighing device and is used to receive the weight signal of the ball milling medium (2). When the accumulated value of the weight increase of the ball milling medium (2) on the belt scale (4) is equal to the preset weight, the PLC controller will stop the ball moving motor.

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