Ball mill lining plate wear on-line detection probe

Abstract

The utility model aims to solve the problem of detection error caused by the interference of ore pulp and water in the existing ball mill wear detection probe, and provides the ball mill lining plate wear on-line detection probe. The utility model relates to an on-line abrasion detection probe for a lining plate of a ball mill. The on-line abrasion detection probe comprises an insulating pouring shell, a PCB probe and a detection plate fixing bin, according to the probe, interference of water and ore pulp on the probe is effectively prevented, and the reliability and the precision of detection can be improved, so that more accurate data support is provided for maintenance and production of the ball mill.

Description

Technical Field

[0001] This utility model belongs to the technical field of ball mill equipment, and specifically relates to an online detection probe for ball mill liner wear. Background Technology

[0002] Ball mills are widely used grinding equipment in industries such as mining and metallurgy. The wear of their internal liners directly affects the operating efficiency and service life of the ball mill. Traditional liner wear detection mainly relies on manual measurement or the use of parallel resistance probes to indirectly determine the liner wear by detecting voltage changes. However, these probes are easily affected by slurry and water in the complex working environment inside the ball mill, leading to resistance fluctuations or short circuits, ultimately causing detection failure and posing many challenges to liner wear monitoring. Therefore, how to design a liner wear detection device that can operate stably in harsh environments has become a focus of industry attention. Summary of the Invention

[0003] The purpose of this invention is to solve the detection error problem caused by interference from slurry and water in existing ball mill wear detection probes, and to provide an online detection probe for ball mill liner wear. This probe effectively prevents interference from water and slurry, improving the reliability and accuracy of detection, thereby providing more accurate data support for ball mill maintenance and production.

[0004] An online detection probe for ball mill liner wear includes an insulating cast-in-place shell, a PCB probe (printed circuit board probe), and a detection board fixing chamber.

[0005] The detection board is housed in the fixed compartment of the detection board, which is equipped with a multiplexer for detecting changes in the PCB probe circuit, an analog-to-digital converter (ADC) chip for monitoring and converting the multiplexer signal, and a signal transmission module for receiving the ADC signal and transmitting the signal to the industrial Ethernet.

[0006] The insulating cast shell is connected to the test board fixing chamber. The PCB probe is located inside the insulating cast shell. The tail of the probe extends out from one end of the insulating cast shell and connects to the multiplexer in the test board fixing chamber.

[0007] The PCB probe has several independent circuit paths arranged on average. Each time the PCB probe wears down a certain distance, one path is disconnected.

[0008] Furthermore, the signal transmission module of the aforementioned ball mill liner wear online detection probe is an NB-IoT module.

[0009] Furthermore, the aforementioned ball mill liner wear online detection probe has an NB-IoT module connected to an antenna for stable communication.

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] 1. This device uses multiple independent PCB paths to ensure that each test does not interfere with the others. When water enters the probe, it can ensure the accuracy of the remaining data from the probe and has strong anti-interference capabilities.

[0012] 2. Using a multiplexer greatly reduces the number of ADC channels used, ensuring high accuracy while reducing costs. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of the device of this utility model;

[0014] Figure 2 1. Schematic diagram of the probe circuit of this utility model;

[0015] Among them, 1. Insulated cast shell, 2. PCB probe, 3. Detection board fixing chamber, 4. Detection board, 5. Multiplexer, 6. Analog-to-digital converter (ADC) chip, 7. Signal transmission module, 8. Circuit path, 21. Probe tail. Detailed Implementation Example

[0016] An online detection probe for ball mill liner wear includes an insulating cast-in-place housing 1, a PCB probe 2 (printed circuit board probe), and a detection board fixing chamber 3;

[0017] The detection board is fixed in the detection board compartment and has a detection board 4. On it is a multiplexer 5 for detecting changes in the PCB probe circuit. An analog-to-digital converter chip ADC6 is used to monitor and convert the multiplexer signal. The ADC signal is transmitted to the signal transmission module 7 NB-IoT module of the industrial Ethernet. The NB-IoT module is connected to an antenna for stable communication.

[0018] The insulating cast shell is connected to the test board fixing chamber. The PCB probe is located inside the insulating cast shell. The probe tail 21 extends out from one end of the insulating cast shell and connects to the multiplexer of the test board fixing chamber.

[0019] The PCB probe has several independent circuit paths arranged on average. Each time the PCB probe wears down a certain distance, one path is disconnected.

[0020] The device is used as follows: the fixing bolts on the ball mill liner have heads facing inwards. The insulating cast-in-place outer shell of this device is inserted into the drilled bolt, with the top of the insulating cast-in-place shell flush with the top of the bolt head. The detection plate fixing chamber is located outside the ball mill chamber and is fixed to the outer wall of the chamber with nuts and sealant. During ball mill operation, the material and grinding balls continuously wear down the liner and bolts, and the probe inside the bolts also wears down. Each time the probe wears a certain distance, a circuit is broken. The multiplexer that detects changes in the PCB probe circuit receives the voltage change caused by the circuit break. The analog-to-digital converter (ADC) chip, used to monitor the multiplexer signal, converts the voltage signal into an electrical signal and sends it to the NB-IoT module. This module transmits the signal to the industrial Ethernet and the host computer, thus sending the real-time online detection of liner wear to the host computer.

[0021] This device utilizes multiple independent PCB paths to ensure that each test is independent of the others. Even when water enters the probe, it guarantees the accuracy of the remaining data and exhibits strong anti-interference capabilities. The use of a multiplexer significantly reduces the number of ADC channels required, maintaining high accuracy while lowering costs.

Claims

1. An online detection probe for ball mill liner wear, characterized in that, Includes an insulated cast housing, a PCB probe, and a test board mounting compartment; The detection board is housed in the fixed compartment of the detection board, which is equipped with a multiplexer for detecting changes in the PCB probe circuit, an ADC for monitoring and converting the multiplexer signal, and a signal transmission module for receiving the ADC signal and transmitting the signal to the industrial Ethernet. The insulating cast shell is connected to the test board fixing chamber. The PCB probe is located inside the insulating cast shell. The tail of the probe extends out from one end of the insulating cast shell and connects to the multiplexer in the test board fixing chamber. The PCB probe has several independent circuit paths arranged on average. Each time the PCB probe wears down a certain distance, one path is disconnected.

2. The online detection probe for ball mill liner wear according to claim 1, characterized in that, The signal transmission module is an NB-IoT module.

3. The online detection probe for ball mill liner wear according to claim 2, characterized in that, The NB-IoT module is connected to an antenna for stable communication.

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