CN-224221534-U - Tower mill based on self-adaptation PID control

Abstract

The utility model relates to the technical field of mineral processing, in particular to a tower mill based on self-adaptive PID control, which comprises a detection module, a control module, an execution module and a man-machine interaction module, wherein the detection module monitors in real time, data are transmitted to the control module in real time, traditional detection delay is eliminated, the control module dynamically adjusts PID parameters and presets rotating speed based on a PLC integrated fuzzy PID algorithm, and the multivariable cooperative parameters are optimized by combining a genetic algorithm, so that the rotating speed, feeding amount and filling rate are coordinated, and stability is ensured. The execution module precisely drives the tower mill by adopting the frequency converter and the permanent magnet synchronous motor, and the closed-loop control improves the response precision. The man-machine interaction module displays real-time data through the upper computer, supports parameter setting and communication configuration, realizes full-flow monitoring and optimization, and the system is coordinated with the multiple modules through self-adaptive control, so that the discharging stability is remarkably improved, the energy consumption is reduced, the service life of equipment is prolonged, and the system is suitable for the requirements of complex working conditions.

Inventors

• TAO JINGWEI
• SHEN ZHEN
• QIAN QINGWEI
• WU LEI
• MA MING
• ZHANG JUN

Assignees

• 马鞍山市天工科技股份有限公司

Dates

Publication Date

20260512

Application Date

20250529

Claims (9)

1. 1. The tower mill based on the self-adaptive PID control comprises a detection module, a control module and an execution module which are arranged on the tower mill (1), and is characterized in that the detection module comprises a medium filling rate detection module which comprises a vibration sensor (2) and a pressure sensor (6); The vibration sensor (2) is arranged at the middle upper part of the outer wall of the barrel of the tower mill (1) in a ring-shaped array distribution manner, and also comprises a filter plate (4), wherein the pressure sensor (6) is arranged on the surface of the filter plate (4), and the induction surface of the pressure sensor (6) is parallel to the bottom surface of the tower mill (1); The pressure sensors (6) are uniformly and annularly arranged around the center of the bearing seat.
2. 2. A tower mill based on adaptive PID control as claimed in claim 1, wherein the annular array distribution spacing of the vibration sensors (2) is at least 1/8 of the circumference of the shell of the tower mill (1), and the sensor orientation is consistent with the tangential direction of the spiral stirrer.
3. 3. A tower mill based on self-adaptive PID control as claimed in claim 2, wherein the surface of a vibration sensor (2) arranged on the outer wall of the barrel of the tower mill (1) is covered with a wear-resistant rubber sheath.
4. 4. The tower mill based on the self-adaptive PID control as claimed in claim 2, wherein the detection module comprises an online laser particle size analyzer (7), the online laser particle size analyzer (7) is transversely embedded into the central position of the side wall of the discharge pipeline of the tower mill (1), and a detection window of the online laser particle size analyzer (7) forms an inclination angle of 30 degrees with the axis of the discharge pipeline.
5. 5. A tower mill based on adaptive PID control according to claim 4, characterized in that the detection module further comprises a feed amount sensor (5), the feed amount sensor (5) is mounted inside a flange of a feed pipe (3) of the tower mill (1), and the feed amount sensor (5) is coaxially fixed with the feed pipe (3).
6. 6. The tower mill based on the self-adaptive PID control of claim 1, wherein the control module adopts a PLC controller (8), and the PLC controller (8) comprises a hardware module and a software control module.
7. 7. A tower mill based on self-adaptive PID control as claimed in claim 1, wherein the filter plate (4) is mounted at the bottom of a stirring cavity of the tower mill (1), the filter plate (4) comprises at least 4 fan-shaped filter plates (401), sealing rings are arranged between the fan-shaped filter plates (401), the tower mill further comprises a stirring shaft, and the fan-shaped filter plates (401) are connected with the stirring shaft through flange bolts.
8. 8. The tower mill based on self-adaptive PID control of claim 7, wherein a mounting hole (404) is formed in the center of the filter plate (4), a sealing groove (403) is formed in the edge of the mounting hole (404), a single-frequency vibration motor (12) is mounted at a flange joint of the filter plate (4), a through hole (402) is formed in the surface of the filter plate (4), and the through hole (402) is a conical through hole.
9. 9. A tower mill based on adaptive PID control as claimed in claim 7, wherein the stirring shaft bottom is connected with a scraper (13), and the scraper (13) bottom is in contact with the filter plate (4).

Description

Tower mill based on self-adaptation PID control Technical Field The utility model relates to the technical field of mineral processing, in particular to a tower mill based on self-adaptive PID control. Background Tower mills are key devices in beneficiation processes that grind ore with grinding media to achieve a target particle size. The traditional control method mostly adopts fixed rotation speed or experience adjustment, is difficult to cope with factors such as ore hardness fluctuation, feeding amount change and the like, and causes poor granularity stability and high energy consumption. Disclosure of utility model In order to solve the above-mentioned problems in the prior art, the present utility model proposes a tower mill based on adaptive PID control to solve the above-mentioned problems. The tower mill based on the self-adaptive PID control comprises a tower mill body, wherein ore pulp containing coarse particles is fed from the lower part of the tower mill, the ground fine particles are output from an output pipeline above the tower mill, and the tower mill further comprises a detection module, wherein the detection module outputs an electric signal to be connected with a control module, and the detection module comprises an online laser particle size meter which is arranged at a discharge port pipeline of the tower mill; the tower mill based on the self-adaptive PID control comprises a detection module, a control module and an execution module, wherein the detection module comprises an online laser particle size analyzer, and the online laser particle size analyzer is transversely embedded into the center position of the side wall of a discharge hole pipeline of the tower mill; The detection window is not completely vertical or horizontal, but forms a 30-degree inclined angle with the axis of the discharge pipeline, and the inclined direction is matched with the material flow direction, so that the laser beam obliquely penetrates the material flow, and the capturing capability of dynamic particles is enhanced. The feeding device also comprises a feeding amount sensor, wherein the feeding amount sensor is arranged on the inner side of a flange plate of a feeding port pipeline of the tower mill, and the feeding amount sensor is coaxially fixed with the feeding pipeline; The device also comprises a medium filling rate detection module, wherein the medium filling rate detection module comprises vibration sensors and pressure sensors, and the vibration sensors are distributed and installed at the middle upper part of the outer wall of the tower mill barrel in an annular array. The detection window of the online laser particle analyzer forms an inclination angle of 30 degrees with the axis of the discharge hole pipeline, the distribution interval of the annular array of the vibration sensor is at least 1/8 of the circumference of the tower mill, the tower mill is completely covered, and the sensor is oriented in the tangential direction of the stirrer. The surface of a vibration sensor arranged on the outer wall of the barrel of the tower mill is covered with a wear-resistant rubber sheath, and the surface of the wear-resistant rubber sheath is provided with radiating fins. The pressure sensors are arranged at the bottom of the tower mill, are uniformly and annularly arranged around the center of the bearing seat, and the sensing surfaces of the pressure sensors are parallel to the bottom surface of the filter plate. The filter is installed in the bottom of tower mill's stirring chamber, and the filter includes 4 piece at least fan-shaped filter, is provided with the sealing washer between the fan-shaped filter, still includes the (mixing) shaft, and fan-shaped filter passes through flange bolt and is connected with the (mixing) shaft, and the pulp gets into tower mill from the charge-in pipeline, along with the continuation of pulp gets into, and the pulp comes up to float gradually and carries out further grinding in the stirring chamber. Part of the caking is adhered to the cylinder wall or falls down on the surface of the filter plate under the action of gravity in the grinding process, and the stirring shaft drives the scraping plate to rotate so as to scrape the surface of the filter plate while stirring the ore pulp at the bottom; stirring the ore pulp at the bottom, enabling part of the ore pulp to adhere to the inner wall of the cylinder body and fall off, rubbing and extruding part of the ore pulp to form the caking when the scraping plate scrapes the surface of the filter plate, breaking the caking, scraping the through holes simultaneously, preventing the through holes from being blocked, and selecting the shape of the bottom of the scraping plate according to specific ore pulp components. When washing, the filter separates the barrel into two cavities, and the bottom is provided with washs the shower nozzle, washs the shower nozzle and can directly wash filter bottom and cavity bottom,