A ball mill heavy-load automatic ball-swinging starting module and method thereof

Abstract

A ball mill heavy-load automatic ball-swinging starting module and method thereof, which relate to the technical field of ball mill starting. The driver includes a ball mill parameter monitoring module, an automatic ball-swinging starting module, a communication module, a human-machine interface module, a speed tracking module, a current and voltage detection module and a motor drive module. The driver is connected to its motor drive module, and the speed tracking module and the current and voltage detection module are connected to the driver. The driver and the ball mill parameter monitoring module are interconnected, and the automatic ball-swinging starting module, the communication module and the human-machine interface module are all interconnected to their drivers. The beneficial effects of the present invention are: the starting module and method thereof make the starting of the ball mill very easy and smooth, and greatly reduce the starting current and the impact on the mechanical system, ensuring that the ball mill can be started smoothly in difficult starting conditions such as midway shutdown, and solving the user's trouble that the system is easily damaged in order to start the ball mill.

Description

Technical Field

[0001] The present invention relates to the technical field of ball mill startup, and in particular to a ball mill heavy-load automatic ball-swinging startup module and a method thereof. Background Art

[0002] A ball mill is a key piece of equipment for pulverizing materials after crushing. This type of mill uses a predetermined number of steel balls within its cylinder as the grinding medium. It is widely used in industries such as cement, silicate products, new building materials, refractories, fertilizers, ferrous and non-ferrous metal beneficiation, and glass and ceramics for dry or wet grinding of various ores and other grindable materials. Suitable for grinding a variety of ores and other materials, ball mills are widely used in industries such as mineral processing, building materials, and the chemical industry.

[0003] The traditional variable frequency ball mill drive control system has shortcomings:

[0004] First, the ball mill is a large inertia constant torque load. When it starts, the deflection angle of the accumulated material also changes. When the material deflection angle reaches 90 degrees, the required torque is the largest, and the output current of the inverter is also the largest, which is prone to skip current failure and even cause the inverter to "explode".

[0005] The second is the ball mill fault inspection and maintenance. The accumulated materials solidify at the bottom, causing the ball to be eccentric. During the startup process, the current impact is too large, causing startup difficulties. Star-delta and auto-coupling step-down starting are required. The starting current is particularly large, which will inevitably shorten its service life. Summary of the Invention

[0006] The purpose of the present invention is to address the shortcomings and defects in the existing technology and provide a heavy-load automatic ball-swinging starting module and method for a ball mill. This starting module and method make the starting of the ball mill very easy and smooth, and greatly reduce the starting current and the impact on the mechanical system, ensuring that the ball mill can be started smoothly in difficult starting conditions such as midway shutdown, and solving the user's trouble with the system being easily damaged when starting the ball mill.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a ball mill heavy-load automatic ball-swinging starting module, which includes a driver, characterized in that: the driver includes a ball mill parameter monitoring module, an automatic ball-swinging starting module, a communication module, a human-machine interface module, a speed tracking module, a current and voltage detection module and a motor drive module: ball mill parameter monitoring module: used to monitor and detect various parameters of the ball mill, and provide feedback; automatic ball-swinging starting module: used for the ball mill to swing the internal steel balls; communication module: communicates and exchanges operations through wifi, ZigBee, and cellular data; human-machine interface module: facilitates staff to operate and control the equipment; speed tracking module: used to monitor and track the internal speed of the equipment, and provide real-time feedback; current and voltage detection module: used to detect the current and voltage of the equipment; motor drive module: performs motor drive operations.

[0008] Furthermore, the driver is connected to its motor drive module, and the speed tracking module and the current and voltage detection module are connected to the driver. The driver is interconnected with the ball mill parameter monitoring module, and the automatic ball swinging start module, communication module and human-machine interface module are all interconnected with their drivers.

[0009] Furthermore, the driver is a DSP digital processing chip.

[0010] A heavy-load automatic ball-swinging starting method for a ball mill includes the following specific methods:

[0011] S1: The driver starts according to the current motor speed, performs normal operation, resets and starts counting, and monitors the driver output current in real time;

[0012] S2: Based on the output current of the monitoring driver, when the output current exceeds the set maximum load current for startup, it indicates that the load is too heavy to start directly, and the driver stops outputting and enters S3;

[0013] If the speed reaches the normal set speed and the normal count exceeds the set time, the process goes to step S5.

[0014] S3: Based on the motor speed output by the speed tracking module, if the speed is not zero, check whether the motor rotation direction is the same as the set direction. If the directions are the same, proceed to step S4;

[0015] When the waiting time exceeds the set value, S1 is implemented at zero speed start;

[0016] S4: Detect whether the current motor speed is less than the previous motor speed. If so, it means that the center of gravity of the ball mill has reached the bottom of the ball. The load for the drive is also the lightest, and the drive enters step S1.

[0017] S5: The drive enters normal operation at the set frequency.

[0018] Furthermore, in the judgment based on the monitoring of the driver output current, if the speed reaches the normal set speed but the normal count does not exceed the set time, the driver is returned to start according to the current motor speed and continues to detect the driver output current.

[0019] After adopting the above technical solution, the beneficial effects of the present invention are as follows: the starting module and method thereof make the starting of the ball mill very easy and smooth, and greatly reduce the starting current and the impact on the mechanical system, ensuring that the ball mill can be started smoothly in difficult starting conditions such as midway shutdown, and solving the user's trouble with the system being easily damaged when starting the ball mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a system block diagram of the present invention.

[0022] Figure 2 It is a flow chart of automatic ball-swinging startup of the present invention. DETAILED DESCRIPTION

[0023] See Figure 1-Figure 2 As shown, the technical solution adopted in this specific embodiment is: it includes a driver, which is characterized in that: the driver includes a ball mill parameter monitoring module, an automatic ball swinging start module, a communication module, a human-machine interface module, a speed tracking module, a current and voltage detection module and a motor drive module, the driver is connected to its motor drive module, and the speed tracking module and the current and voltage detection module are connected to the driver, the driver and the ball mill parameter monitoring module are interconnected, and the automatic ball swinging start module, the communication module and the human-machine interface module are all interconnected to their drivers.

[0024] Ball mill parameter monitoring module: used to monitor and detect various parameters of the ball mill and provide feedback.

[0025] Automatic ball-shaking start module: used for the ball mill to shake the internal steel balls.

[0026] Communication module: Communication exchange operations are carried out through WiFi, ZigBee, and cellular data.

[0027] Human-machine interface module: facilitates staff to operate and control equipment.

[0028] Speed ​​tracking module: used to monitor and track the internal speed of the device and provide real-time feedback.

[0029] Current and voltage detection module: used to detect the current and voltage of the equipment.

[0030] Motor drive module: performs motor drive operations.

[0031] Furthermore, the driver is a DSP (digital signal processing) chip. DSP chips are digital signal processing technologies, and DSP chips are chips capable of implementing digital signal processing technology. DSP chips employ a Harvard architecture that separates program and data, feature a specialized hardware multiplier, utilize extensive pipeline operations, and provide specialized DSP instructions for rapidly implementing various digital signal processing algorithms.

[0032] A heavy-load automatic ball-swinging starting method for a ball mill includes the following specific methods:

[0033] S1: The driver starts according to the current motor speed, performs normal operation reset and starts counting, and monitors the driver output current in real time.

[0034] S2: Based on the output current of the monitoring driver, when the output current exceeds the set maximum load current for startup, it indicates that the load is too heavy to start directly, and the driver stops outputting and enters S3;

[0035] If the speed reaches the normal set speed and the normal count exceeds the set time, enter step S5;

[0036] If the speed reaches the normal set speed, but the normal count does not exceed the set time, it returns to S1 and continues to detect the driver output current.

[0037] S3: Based on the motor speed output by the speed tracking module, if the speed is not zero, check whether the motor rotation direction is the same as the set direction. If the directions are the same, proceed to step S4;

[0038] When the waiting time exceeds the set value, S1 is implemented at zero speed start.

[0039] S4: Detect whether the current motor speed is less than the previous motor speed. If so, it means that the center of gravity of the ball mill has reached the bottom of the sphere, and the load for the drive is also the lightest. The drive enters step S1.

[0040] S5: The drive enters normal operation at the set frequency.

[0041] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A heavy-load automatic ball-swinging starting method for a ball mill, which uses the following starting module, including a driver, the driver including a ball mill parameter monitoring module, an automatic ball-swinging starting module, a communication module, a human-machine interface module, a speed tracking module, a current and voltage detection module, and a motor drive module: Ball mill parameter monitoring module: used to monitor and detect various parameters of the ball mill and provide feedback; Automatic ball-shaking start module: used for the ball mill to shake the internal steel balls; Communication module: communication exchange operations through WiFi, ZigBee, and cellular data; Human-machine interface module: facilitates staff to operate and control equipment; Speed ​​tracking module: used to monitor and track the internal speed of the device and provide real-time feedback; Current and voltage detection module: used to detect the current and voltage of the equipment; Motor drive module: performs motor drive operations, It is characterized in that: the startup method includes the following specific methods: S1: The driver starts according to the current motor speed, performs normal operation, resets and starts counting, and monitors the driver output current in real time; S2: Based on the output current of the monitoring driver, when the output current exceeds the set maximum load current for startup, it means that the load is too heavy to start directly, and the driver stops outputting and enters S3; If the speed reaches the normal set speed and the normal count exceeds the set time, enter step S5; S3: Based on the motor speed output by the speed tracking module, if the speed is not zero, check whether the motor rotation direction is the same as the set direction. If the directions are the same, proceed to step S4; When the waiting time exceeds the set value, S1 is implemented at zero speed start; S4: Detect whether the current motor speed is less than the previous motor speed. If so, it means that the center of gravity of the ball mill has reached the bottom of the ball. The load for the drive is also the lightest, and the drive enters step S1. S5: The drive enters normal operation at the set frequency.

2. A heavy-load automatic ball-swinging starting method for a ball mill according to claim 1, characterized in that: The driver is connected to its motor drive module, and the speed tracking module and current and voltage detection module are connected to the driver. The driver is interconnected with the ball mill parameter monitoring module, and the automatic ball swinging start module, communication module and human-machine interface module are all interconnected with their drivers.

3. The method for starting a ball mill under heavy load and automatic ball swinging according to claim 1, characterized in that: The driver is a dsp digital processing chip.

4. The method for starting a ball mill with automatic ball swinging under heavy load according to claim 1, characterized in that: In said S2, if the speed reaches the normal set speed but the normal count does not exceed the set time, the process returns to S1 to continue detecting the driver output current.

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