Steel ball batching system of ball mill

Abstract

The utility model discloses a ball mill steel ball batching system which comprises a classifying screen and a mixing and weighing hopper, a feeding port of the classifying screen is located below a ball mill steel ball discharging station, a first discharging port of the classifying screen is a waste discharging port, and a second discharging port of the classifying screen is communicated with an inlet of a first buffering storage bin. A third discharging port of the classifying screen is communicated with an inlet of the second buffer storage bin, an outlet of the first buffer storage bin, an outlet of the second buffer storage bin and a fourth discharging port of the classifying screen are communicated with a feeding port of the mixing and weighing hopper through a first elephant trunk, a second elephant trunk and a third elephant trunk respectively, and a balance weight port is formed in the top of the mixing and weighing hopper. The device has the advantages that the steel balls discharged by the ball mill are graded by the screening machine, then are sequentially conveyed to the mixing and weighing hopper and are metered, and then the steel balls with corresponding specifications can be added through the counterweight port, so that accurate batching is realized, and the ball milling effect is ensured; and the damaged steel balls can be separated out, so that the treatment capacity of the ball mill is ensured.

Description

Technical field:

[0001] The utility model relates to the field of steel ball screening, in particular to a steel ball batching system for a ball mill. Background technology:

[0002] During coal mining, underground mining activities can cause delamination within the overlying rock strata. If these delamination spaces are not promptly filled, they can lead to hard gas subsidence, posing a significant safety hazard. Our company has developed a process for filling these delamination spaces with coal gangue. This involves grinding the gangue in a ball mill, adding water to create a slurry, and then drilling the slurry into the delamination space. This process not only fills the delamination space, improving safety, but also allows for the utilization of the gangue, reducing the environmental hazards posed by its storage. The ball mill is a key component of the gangue grouting system. It primarily utilizes three different diameters of steel balls for grading and mixing to mill the gangue. Over extended periods of operation, the steel balls within the mill experience varying degrees of wear, necessitating re-grading. Currently, this process involves manually adding steel balls to the mill by observing the mill's discharge and adjusting the mill's structure accordingly. However, manual observation and adjustment may result in large errors and be greatly affected by manual work experience. In addition, broken steel balls cannot be discharged in time, which will also affect the ball milling effect and processing volume. Utility model content:

[0003] The purpose of the utility model is to provide a ball mill steel ball batching system.

[0004] The utility model is implemented by the following technical scheme: a ball mill steel ball batching system, which includes a grading screen and a mixing weighing hopper, the feed port of the grading screen is located below the ball discharge station of the ball mill, the first discharge port of the grading screen is a waste discharge port, the second discharge port of the grading screen is connected to the inlet of the first cache silo, the third discharge port of the grading screen is connected to the inlet of the second cache silo, the outlet of the first cache silo, the outlet of the second cache silo, and the fourth discharge port of the grading screen are connected to the feed port of the mixing weighing hopper through the first chute, the second chute and the third chute respectively, a counterweight port is provided on the top of the mixing weighing hopper, and a first control valve and a second control valve are installed on the first chute and the second chute respectively.

[0005] Furthermore, it also includes a first raw material box, a second raw material box and a third raw material box. The outlet of the first raw material box, the outlet of the second raw material box and the outlet of the third raw material box are connected to the counterweight port of the mixing weighing hopper through a fourth chute, a fifth chute and a sixth chute respectively. A third control valve, a fourth control valve and a fifth control valve are respectively installed on the fourth chute, the fifth chute and the sixth chute.

[0006] Furthermore, the weighing sensor of the mixing weighing hopper is connected to the input end of the controller, and the output end of the controller is connected to the first control valve, the second control valve, the third control valve, the fourth control valve, and the fifth control valve respectively.

[0007] Furthermore, the outlet of the waste discharge port is connected to the inlet of the waste collection box.

[0008] The advantages of this utility model are as follows: the steel balls discharged from the ball mill are classified by a screening machine and sent to a mixing and weighing hopper in sequence. After measurement, steel balls of corresponding specifications can be added through the counterweight port, thereby achieving accurate batching and ensuring the ball milling effect; and the broken steel balls can be separated out to ensure the processing capacity of the ball mill. Description of the drawings:

[0009] Figure 1 Schematic diagram of the overall structure of this embodiment.

[0010] Figure 2 This is a diagram of the controller connection.

[0011] Grading screen 1, mixing and weighing hopper 2, waste discharge port 3, first buffer silo 4, second buffer silo 5, first chute 6, second chute 7, third chute 8, counterweight port 9, first control valve 10, second control valve 11, first raw material box 12, second raw material box 13, third raw material box 14, fourth chute 15, fifth chute 16, sixth chute 17, third control valve 18, fourth control valve 19, fifth control valve 20, weighing sensor 21, controller 22, waste collection box 23. Specific implementation method:

[0012] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0013] like Figure 1 and Figure 2As shown, the ball mill steel ball batching system includes a grading screen 1 and a mixing weighing hopper 2. The feed port of the grading screen 1 is located below the ball discharge station of the ball mill. The first discharge port of the grading screen 1 is a waste discharge port 3. The second discharge port of the grading screen 1 is connected to the inlet of the first cache silo 4. The third discharge port of the grading screen 1 is connected to the inlet of the second cache silo 5. The outlet of the first cache silo 4, the outlet of the second cache silo 5 and the fourth discharge port of the grading screen 1 are connected to the feed port of the mixing weighing hopper 2 through the first chute 6, the second chute 7 and the third chute 8 respectively. A counterweight port 9 is provided on the top of the mixing weighing hopper 2, and a first control valve 10 and a second control valve 11 are installed on the first chute 6 and the second chute 7 respectively. After the steel ball discharge port of the ball mill rotates to the steel ball discharge station of the ball mill, the steel ball discharge port is opened, and the steel balls in the ball mill are discharged to the grading screen 1 for screening. First, the broken steel balls have a smaller particle size and are first discharged from the waste discharge port 3. The outlet of the waste discharge port 3 is connected with the inlet of the waste collection box 23, and the broken steel ball waste is discharged into the waste collection box 23 through the waste discharge port 3, which is convenient for unified collection and treatment; then, the remaining steel balls are discharged through the second discharge port, the third discharge port and the fourth discharge port in turn, and the first steel balls discharged from the second discharge port are stored in the first buffer bin 4, the second steel balls discharged from the third discharge port are stored in the second buffer bin 5, and the third steel balls discharged from the fourth discharge port are directly sent to the third chute 8 to the mixing weighing hopper 2 for measurement; after the screening is completed, the mixed weighing hopper 2 is first added through the counterweight port 9. Add the third steel ball until the weight of the third steel ball reaches the process requirement, and then stop adding the third steel ball; then, open the first control valve 10, and discharge all the first steel balls in the first buffer silo 4 into the mixing weighing hopper 2 through the first chute 6, and then add the first steel ball to the mixing weighing hopper 2 through the counterweight port 9, and stop adding the first steel ball after the total weight of the steel balls in the mixing weighing hopper 2 reaches the sum of the weight of the third steel ball and the first steel ball required by the process; finally, open the second control valve 11, and discharge all the steel balls in the second buffer silo 5 into the mixing weighing hopper 2, and then add the second steel ball to the mixing weighing hopper 2 through the counterweight port 9, and stop adding the second steel ball after the total weight of the steel balls in the mixing weighing hopper 2 reaches the sum of the weight of the third steel ball, the second steel ball and the first steel ball required by the process, and complete the batching process.

[0014] Specifically, it also includes a first raw material box 12, a second raw material box 13, and a third raw material box 14. The outlets of the first raw material box 12, the second raw material box 13, and the third raw material box 14 are connected to the counterweight port 9 of the mixing and weighing hopper 2 via a fourth chute 15, a fifth chute 16, and a sixth chute 17, respectively. A third control valve 18, a fourth control valve 19, and a fifth control valve 20 are respectively installed on the fourth chute 15, the fifth chute 16, and the sixth chute 17. The first raw material box 12 is used to store first steel balls of the same specifications as the steel balls in the first buffer silo 4, the second raw material box 13 is used to store second steel balls of the same specifications as the steel balls in the second buffer silo 5, and the third raw material box 14 is used to store third steel balls of the same specifications as the steel balls discharged from the fourth discharge port of the grading screen 1. Opening the corresponding third control valve 18, fourth control valve 19, or fifth control valve 20 below allows the steel balls in the corresponding raw material box to be added to the mixing and weighing hopper 2 through the corresponding chute and counterweight port 9, achieving automatic replenishment. The weighing sensor 21 of the mixing and weighing hopper 2 is connected to the input of the controller 22, and the output of the controller 22 is connected to the first control valve 10, the second control valve 11, the third control valve 18, the fourth control valve 19, and the fifth control valve 20. The weighing sensor 21 transmits the detected data to the controller 22, which controls the opening and closing of each control valve based on the received data.

[0015] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Ball mill steel ball batching system, characterized by: It includes a grading screen and a mixing weighing hopper. The feed port of the grading screen is located below the ball discharge station of the ball mill. The first discharge port of the grading screen is a waste discharge port. The second discharge port of the grading screen is connected to the inlet of the first cache silo. The third discharge port of the grading screen is connected to the inlet of the second cache silo. The outlet of the first cache silo, the outlet of the second cache silo and the fourth discharge port of the grading screen are connected to the feed port of the mixing weighing hopper through the first chute, the second chute and the third chute respectively. A counterweight port is provided on the top of the mixing weighing hopper, and a first control valve and a second control valve are installed on the first chute and the second chute respectively.

2. The ball mill steel ball batching system according to claim 1, characterized in that: It also includes a first raw material box, a second raw material box and a third raw material box. The outlet of the first raw material box, the outlet of the second raw material box and the outlet of the third raw material box are connected to the counterweight port of the mixing weighing hopper through a fourth chute, a fifth chute and a sixth chute respectively. A third control valve, a fourth control valve and a fifth control valve are installed on the fourth chute, the fifth chute and the sixth chute respectively.

3. The ball mill steel ball batching system according to claim 2, characterized in that: The weighing sensor of the mixing weighing hopper is connected to the input end of the controller, and the output end of the controller is connected to the first control valve, the second control valve, the third control valve, the fourth control valve, and the fifth control valve respectively.

4. The ball mill steel ball batching system according to any one of claims 1 to 3, characterized in that: The outlet of the waste discharge port is communicated with the inlet of the waste collection box.

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