Ball feeding device

Abstract

The utility model discloses a ball feeding device which comprises a ball storage bin, a pressure buffering groove, a shaping chute, an infrared detection device, a separation device and a belt metering device. Wherein the ball storage bin is used for storing to-be-added steel balls, the pressure buffering groove is formed below the ball storage bin, and the separation device is located below a ball discharging opening of the pressure buffering groove; the shaping chute is connected with a ball discharging opening of the pressure buffering groove, and the infrared detection device is installed on the shaping chute. The belt metering device is located below the shaping chute and used for conveying and metering the steel balls. Therefore, the small-diameter steel balls can be automatically and stably added and accurately metered, and the stable filling rate of the ball mill is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical devices, in particular to a ball adding device. Background Art

[0002] Ball mills are essential grinding equipment in the mining industry. The filling rate directly impacts the mill's grinding efficiency, and uniform and stable ball addition is crucial for ensuring this filling rate. For larger diameter balls, the industry generally utilizes automatic ball feeders. Shuichang Iron Mine has also designed and manufactured various ball feeders, achieving uniform and stable automatic ball addition and counting for φ110mm and φ125mm steel balls in its single-stage grate ball mills.

[0003] However, for smaller-diameter steel balls, problems such as ball accumulation and clogging of the slideway, inaccurate ball metering, and continuous and uniform ball addition are common. Consequently, manual centralized addition is often used, impacting the ball ratio and the stability of the mill's filling rate, limiting the mill's grinding efficiency. These same issues also exist when adding φ50mm steel balls to the overflow ball mill in the secondary grinding stage of the Shuichang iron ore mine. Summary of the Invention

[0004] The embodiments of the present application provide a ball adding device to solve the technical problems of ball clogging and inaccurate ball addition amount measurement during the addition of small-diameter steel balls in the prior art.

[0005] In a first aspect, the present application provides a ball adding device, comprising: a ball storage bin, a pressure relief tank, a separation device shaping chute, an infrared detection device, and a belt metering device;

[0006] Among them, the ball storage bin is used to store steel balls to be added, a pressure relief trough is arranged below the ball storage bin, and the separation device is located below the lower ball outlet of the pressure relief trough; the shaping chute is connected to the lower ball outlet of the pressure relief trough, and the infrared detection device is installed on the shaping chute; the belt metering device is located below the shaping chute and is used to transport and measure steel balls.

[0007] Optionally, the lower ball opening of the ball storage bin and the lower ball opening of the pressure relief groove are not in the same straight line.

[0008] Optionally, the separation device includes a separation motor, a reducer connected to the separation motor, and a cam group connected to the separation motor.

[0009] Optionally, the shaping chute includes a first chute section, a second chute section and a vibration motor;

[0010] The first slot section is connected to the second slot section in a folded manner, and the vibration motor is installed at the folded connection.

[0011] Optionally, the slope of the first trough section and the second trough section is 13 degrees.

[0012] Optionally, the chute width decreases from the first chute section to the second chute section.

[0013] Optionally, the infrared detection device includes a high-position infrared detection device and a low-position infrared detection device;

[0014] The high-position infrared detection device is installed on the first slot section, and the low-position infrared detection device is installed on the second slot section.

[0015] Optionally, the belt metering device includes a heavy bridge, master and slave rollers, and a metering roller.

[0016] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0017] The utility model discloses a ball-adding device, comprising a ball storage bin, a pressure relief trough, a shaping chute, an infrared detection device, a separation device, and a belt metering device. The ball storage bin is used to store steel balls to be added, a pressure relief trough is provided below the ball storage bin, and the separation device is located below the lower ball opening of the pressure relief trough. The shaping chute is connected to the lower ball opening of the pressure relief trough, and the infrared detection device is mounted on the shaping chute. The belt metering device is located below the shaping chute and is used to convey and meter steel balls. This allows for automatic, stable addition and precise metering of small-diameter steel balls, ensuring a stable filling rate for the ball mill.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference figures denote the same components. In the accompanying drawings:

[0020] Figure 1 This is a structural diagram of a ball adding device in an embodiment of the present utility model;

[0021] legend:

[0022] 1-Separation motor; 2-Shaping chute; 3-Low-position infrared detection device; 4-High-position infrared detection device; 5-Vibration motor; 6-Conveyor belt; 7-Ball storage bin; 8-Pressure relief trough; 9-Cam assembly; 10-Weighing sensor; 11-Belt drive device. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] Ball mills are essential grinding equipment in the mining industry. The filling rate directly impacts the mill's grinding efficiency, and uniform and stable ball addition is crucial for ensuring this filling rate. For larger diameter balls, the industry generally utilizes automatic ball feeders. Shuichang Iron Mine has also designed and manufactured various ball feeders, achieving uniform and stable automatic ball addition and counting for φ110mm and φ125mm steel balls in its single-stage grate ball mills.

[0028] However, for smaller-diameter steel balls, problems such as ball accumulation and clogging of the slideway, inaccurate ball metering, and continuous and uniform ball addition are common. Consequently, manual centralized addition is often used, impacting the ball ratio and the stability of the mill's filling rate, limiting the mill's grinding efficiency. These same issues also exist when adding φ50mm steel balls to the overflow ball mill in the secondary grinding stage of the Shuichang iron ore mine.

[0029] Based on the above situation, this embodiment provides a ball adding device, which realizes automatic, stable addition and precise measurement of small-diameter steel balls, thereby ensuring a stable filling rate of the ball mill.

[0030] Specifically, in this embodiment, the ball adding device includes a ball storage bin, a pressure relief tank, a separation device, a shaping chute, an infrared detection device, a belt metering device and a ball adding control system.

[0031] Among them, the ball storage bin is used to store steel balls to be added, a pressure relief trough is arranged below the ball storage bin, and the separation device is located below the lower ball outlet of the pressure relief trough; the shaping chute is connected to the lower ball outlet of the pressure relief trough, and the infrared detection device is installed on the shaping chute; the belt metering device is located below the shaping chute and is used to transport and measure steel balls.

[0032] Specifically, the ball storage bin, located above the ball loading device and welded from wear-resistant steel plates, is used to store the steel balls waiting to be added. A pressure relief groove is located at the bottom of the bin. This groove-shaped groove guides small-diameter steel balls out of the bin. The lower opening of the bin and the lower opening of the pressure relief groove are not aligned. For example, if the lower opening of the bin is on the left, the lower opening of the pressure relief groove is on the right; conversely, if the lower opening of the bin is on the right, the lower opening of the pressure relief groove is on the left.

[0033] The lower ball opening of the ball storage bin and the lower ball opening of the pressure relief groove are not in the same straight line, which can reduce the pressure and impact force of the steel balls in the ball storage bin on the steel balls at the lower ball opening of the pressure relief groove.

[0034] In one embodiment, the separation device includes a separation motor, a reducer connected to the separation motor, and a cam group connected to the separation motor.

[0035] When the infrared detection device on the shaping chute cannot detect the steel balls, the separation motor can drive the cam group to loosen and drop the steel balls, which can effectively solve the problem of blockage of the ball outlet under the pressure relief chute.

[0036] In one embodiment, the shaping chute includes a first chute section, a second chute section, and a vibration motor. The first chute section and the second chute section are connected by a "<" foldback, with the first chute section located above the second chute section and connected to the lower ball port of the pressure relief chute. The vibration motor is installed at the foldback connection. Both the first chute section and the second chute section are downwardly inclined.

[0037] In this embodiment, the first trough section and the second trough section have the same downward slope. For example, the downward slope of the first trough section and the second trough section is 13 degrees, or the downward slope of the first trough section and the second trough section is slightly greater than 13 degrees, or the downward slope of the first trough section and the second trough section is slightly less than 13 degrees. The chute width decreases from the first trough section to the second trough section. For example, the chute width gradually decreases from 40 cm to 12 cm from the first trough section to the second trough section.

[0038] The infrared detection device includes a high-position infrared detection device and a low-position infrared detection device; the high-position infrared detection device is installed on the first trough section, and the low-position infrared detection device is installed on the second trough section. When the high-position infrared detection device or the low-position infrared detection device fails to detect the steel ball, the vibration motor automatically starts to ensure that the steel ball continues to roll in the chute.

[0039] In one embodiment, the belt metering device includes a weighing bridge, master and slave rollers, and metering rollers for conveying and metering steel balls.

[0040] In this embodiment, the ball adding control system is used to automatically control the ball mill operating status, separation device, vibrator, detection device, and belt metering device, perform PID calculations according to set values, automatically adjust the belt speed and operating time, and realize continuous quantitative addition of steel balls.

[0041] Combine Figure 1 As shown, in one embodiment, steel balls flow from the ball storage bin 7 into the pressure relief trough 8 by gravity. The ball adding control system collects ball mill operation information. After PID calculation, the belt drive device 11 is activated, and the steel balls are transported by the conveyor belt 6 and measured by the weighing sensor 10 before entering the ball mill. When the ball adding amount reaches the set value, the belt drive device 11 stops. During the ball adding process, if the high-level infrared detection device 4 fails to detect steel balls, the separation motor 1 of the separation device automatically operates, driving the cam group 9 to rotate, loosening and dropping the steel balls at the lower ball opening of the pressure relief trough 8. If the high-level infrared detection device 4 or the low-level infrared detection device 3 fails to detect steel balls, the vibration motor 5 automatically starts to ensure that the steel balls continue to roll in the shaping chute 2. The ball adding control system performs real-time PID adjustment based on the ball mill current to stabilize the ball mill filling rate.

[0042] For example, the Shuichang Iron Mine put the ball adding device of this embodiment into trial operation in March 2024. During the trial operation, the device operated stably, achieved quantitative automatic addition of small-diameter steel balls, stabilized the ball mill filling rate, created conditions for improving grinding efficiency, and has exemplary significance within the industry and has broad prospects for promotion and application.

[0043] In summary, the present invention discloses a ball-adding device comprising a ball storage bin, a pressure relief trough, a separation device, a shaping chute, an infrared detection device, and a belt metering device. The ball storage bin is used to store steel balls to be added, a pressure relief trough is provided below the bin, and the separation device is located below the lower ball opening of the pressure relief trough. The shaping chute is connected to the lower ball opening of the pressure relief trough, and the infrared detection device is mounted on the shaping chute. The belt metering device is located below the shaping chute and is used to convey and meter steel balls. This allows for the automatic, stable addition and precise metering of small-diameter steel balls, ensuring a stable filling rate for the ball mill.

[0044] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0045] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A ball adding device, characterized in that: include: Ball storage bin, pressure relief tank, separation device, shaping chute, infrared detection device, belt metering device; Among them, the ball storage bin is used to store steel balls to be added, a pressure relief trough is arranged below the ball storage bin, and the separation device is located below the lower ball outlet of the pressure relief trough; the shaping chute is connected to the lower ball outlet of the pressure relief trough, and the infrared detection device is installed on the shaping chute; the belt metering device is located below the shaping chute and is used to transport and measure steel balls.

2. The ball adding device according to claim 1, wherein: The lower ball opening of the ball storage bin and the lower ball opening of the pressure relief groove are not in the same straight line.

3. The ball adding device according to claim 1, wherein: The separation device includes a separation motor, a speed reducer connected to the separation motor, and a cam group connected to the separation motor.

4. The ball adding device according to claim 1, wherein: The shaping chute includes a first chute section, a second chute section and a vibration motor; The first slot section is connected to the second slot section in a folded manner, and the vibration motor is installed at the folded connection.

5. The ball adding device according to claim 4, characterized in that: The slope of the first trough section and the second trough section is 13 degrees.

6. The ball adding device according to claim 4, characterized in that: The chute width decreases from the first chute section to the second chute section.

7. The ball adding device according to claim 4, characterized in that: The infrared detection device includes a high-position infrared detection device and a low-position infrared detection device; The high-position infrared detection device is installed on the first slot section, and the low-position infrared detection device is installed on the second slot section.

8. The ball adding device according to claim 1, wherein: The belt metering device includes a heavy bridge frame, a master and slave rollers and a metering roller.

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