CN203830127U - Closed type automatic control system for ore grinding classification - Google Patents

Abstract

The utility model relates to a closed-circuit automatic control system for grinding and grading, which includes a host computer, PLC and field equipment; the field equipment includes a feeder, a ball mill, a cyclone, a pump pool, and a slurry pool; the entrance of the ball mill is provided with The ore clean water pipe, the outlet is connected to the cyclone by the pipeline, and the ore discharge clean water pipe is connected to the pipeline; the cyclone is provided with a drain pipe and an overflow pipe, the overflow pipe is connected to the slurry pool, and the lower part of the drain pipe is equipped with Pump pool; the pump pool is provided with a pump pool replenishment pipe and a sand return pipe, and the outlet of the sand return pipe corresponds to the inlet of the ball mill; the feeder is connected to the automatic feeding control system, and the ball mill is connected to the automatic control system of the ball mill, and the feeding is automatically controlled Both the system and the automatic control system of the ball mill are connected with PLC; the clear water pipes for mine supply, clear water for mine discharge, additional clear water pipes, water supply pipes for pump pools and sand return pipes are all equipped with flow sensors and flow control valves, flow sensors and The flow control valves are all connected to the PLC; the overflow pipe of the cyclone is equipped with a concentration control valve and a concentration sensor, and the concentration control valve and the concentration sensor are connected to the PLC; the PLC is connected to the host computer, and the system realizes automatic and stable process parameters Control, strong adaptability, good economic benefits, improve the automation and information level of the dressing plant.

Description

Closed-circuit Grinding and Grading Automatic Control System

technical field

The utility model relates to an ore grinding and grading system, in particular to a closed-circuit automatic control system for ore grinding and grading, which belongs to the field of ore dressing.

Background technique

Grinding and grading, as one of the important operating procedures of the concentrator, directly affects the production technical indicators of the subsequent sorting operation and the economic and technical indicators of the concentrator. The traditional grinding and grading operation is to manually monitor the production data and carry out the corresponding system The essence of analysis and equipment operation is an inefficient production method, which wastes a lot of manpower and time and affects industrial production.

Utility model content

In order to solve the above problems, the utility model proposes a closed-circuit grinding and grading automatic control system, which realizes the automatic and stable regulation of process parameters, has strong adaptability, good economic benefits, and improves the automation and informatization level of the dressing plant .

The technical solution adopted by the utility model to solve the technical problems is: a closed-circuit grinding and grading automatic control system, including a host computer, PLC and on-site equipment; the on-site equipment includes a feeder, a ball mill, a cyclone, a pump pool, ore slurry pool; the entrance of the ball mill is provided with a clear water pipe for mine supply, and the outlet is connected to the cyclone by a pipeline, and the pipeline is connected with a clear water pipe for discharge of ore; the cyclone is provided with a drain pipe and an overflow pipe, and the overflow pipe is connected to In the pulp pool, the lower part of the drainage pipe is correspondingly equipped with a pump pool; the pump pool is provided with a water supply pipe for the pump pool and a sand return water pipe, and the outlet of the sand return water pipe is set corresponding to the entrance of the ball mill; the feeder is connected to the automatic feeding control system, the ball mill Connect the ball mill automatic control system, the feeding automatic control system and the ball mill automatic control system are all connected to the PLC; the ore clean water pipe, ore discharge clean water pipe, additional clean water pipe, pump pool water supply pipe and sand return pipe are all equipped with The flow sensor and the flow control valve are connected to the PLC; the overflow pipe of the cyclone is equipped with a concentration control valve and a concentration sensor, and the concentration control valve and the concentration sensor are connected to the PLC; the PLC is connected to the host computer.

The feeding automatic control system includes a start-stop controller and a frequency converter for controlling the operation of the feeder, a quality sensor and a quality controller for measuring and controlling the feeding amount of the feeder.

The ball mill automatic control system includes a grinding noise sensor for measuring the grinding noise of the ball mill, an electric sensor for measuring the electrical power of the ball mill, a temperature sensor for collecting the temperature of the ball mill, a vibration sensor for measuring the vibration of the ball mill, and a frequency conversion speed controller for controlling the operation of the ball mill and start-stop controller.

The beneficial effects of the utility model are: a closed-circuit automatic control system for grinding and grading, which realizes the automatic and stable control of process parameters, has strong adaptability, good economic benefits, and improves the automation and informatization level of the dressing plant.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Accompanying drawing 1 is a schematic diagram of a closed-circuit automatic control system for grinding and grading.

In the figure, 1. feeder, 2. ball mill, 3. cyclone, 4. pump pool, 5. pulp pool, 6. clean water pipe for mine supply, 7. clean water pipe for mine discharge, 8. additional clean water pipe, 9. Overflow pipe, 10. Drain pipe, 11. Pump pool water supply pipe, 12. Sand return pipe, 13. Feeding control system, 14. Ball mill control system, 15. PLC, 16. Host computer.

Detailed ways

In the accompanying drawings, a closed-circuit grinding and grading automatic control system includes a host computer 16, PLC 15 and field equipment; the field equipment includes a feeder 1, a ball mill 2, a cyclone 3, a pump pool 4, and a slurry pool 5; the entrance of the ball mill 2 is provided with an ore clear water pipe 6, and the outlet is connected to a cyclone 3 by a pipeline, and the pipeline is connected with a mine discharge clear water pipe 7; the cyclone 3 is provided with a drain pipe 10 and an overflow pipe 9, The overflow pipe 9 is connected to the pulp pool 5, and the lower part of the drain pipe 10 is provided with a pump pool 4; The feeder 1 is connected to the automatic control system 13 for feeding, and the ball mill 2 is connected to the automatic control system 14 for the ball mill, and the automatic control system 13 for the ball mill and the automatic control system 14 for the ball mill are all connected to the PLC15; A flow sensor and a flow control valve are provided on the mine clean water pipe 7, the supplementary clean water pipe 8, the pump pool water supply pipe 11 and the sand return pipe 12, and both the flow sensor and the flow control valve are connected to the PLC15; the overflow of the cyclone 3 The pipe 9 is provided with a concentration control valve and a concentration sensor, and the concentration control valve and the concentration sensor are connected to the PLC15; the PLC15 is connected to the upper computer 16.

The feeding automatic control system 13 includes a start-stop controller and a frequency converter to control the operation of the feeder 1, a quality sensor and a quality controller to measure and control the feeding amount of the feeder 1.

The ball mill automatic control system 14 includes a grinding sound sensor for measuring the grinding sound of the ball mill 2, an electric sensor for measuring the electric power of the ball mill 2, a temperature sensor for collecting the temperature of the ball mill 2, a vibration sensor for measuring the vibration of the ball mill 2, and controlling the ball mill 2. Frequency converter and start-stop controller for operating conditions.

When in use, each sensor collects the operating parameters of the equipment in real time, transmits the signal to the PLC 15 through the transmitter, and then transmits it to the host computer 16 for data processing through the communication module, and the host computer 16 calculates the action of the actuator, thereby realizing the equipment Work under optimal conditions. Firstly, the electrical power sensor and the grinding noise sensor collect the electric power and grinding noise of the ball mill 2 and transmit it to PLC15, and the PLC15 calculates the acceptable ore feeding value of the ball mill; then, the quality sensor measures the feeding amount of the feeder 1 in real time, And compared with the set value of the ore feeding amount of the ball mill 2, the PLC15 changes the frequency of the frequency converter of the feeder 1, controls the speed of the feeder 1, and then adjusts the feeding amount. When the mill is working normally, the grinding concentration can be adjusted by adding clean water to the ball mill 2 through the clear water supply pipe 6. The concentration analysis equipment is used to obtain the real-time grinding concentration, and based on the amount of ore feeding, through PLC15 adjusts the opening degree of the mine water supply pipe 6 water supply valve. The material-water mixture discharged from the ball mill 2 enters the cyclone 3, and the concentration detection equipment obtains the real-time concentration data of the overflow of the cyclone 3, and combines the set value of the ore feeding amount of the grinding to determine the set value of the ore discharge water supply. Through the PLC15 to control the opening of the valve of the ore discharge and clear water pipe to adjust the water supply of the ore discharge, so as to adjust the concentration of the classifier. During the working process, the temperature sensor, power sensor, vibration sensor, grinding noise sensor, etc. monitor the fault indication parts such as the bearing and bearing bush of the mill 2, and the upper computer 16 judges the fault degree and controls the frequency converter or motor, etc. The operation can realize the fault diagnosis and protection control of the grinding machine.

Claims (3)

1. A closed-circuit automatic control system for grinding and grading, comprising a host computer (16), a PLC (15) and field equipment; the field equipment includes a feeder (1), a ball mill (2), a cyclone (3 ), pump pool (4), ore slurry pool (5); it is characterized in that the inlet of the ball mill (2) is provided with a clean water pipe (6), and the outlet is connected to the cyclone (3) by a pipeline, and the pipeline is connected Mine discharge pipe (7); the cyclone (3) is provided with a drain pipe (10) and an overflow pipe (9), the overflow pipe (9) is connected to the slurry tank (5), and the lower part of the drain pipe (10) Correspondingly, a pump pool (4) is provided; the pump pool (4) is provided with a pump pool replenishment pipe (11) and a sand return water pipe (12), and the outlet of the sand return water pipe (12) corresponds to the inlet setting of the ball mill (2); The feeder (1) is connected to the automatic feeding control system (13), the ball mill (2) is connected to the automatic control system of the ball mill (14), the automatic feeding control system (13) and the automatic control system of the ball mill (14) are all connected with the PLC (15 ) connection; the mine supply clean water pipe (6), mine discharge clean water pipe (7), supplementary clean water pipe (8), pump pool water supply pipe (11) and sand return pipe (12) are equipped with flow sensors and The flow control valve, the flow sensor and the flow control valve are all connected to the PLC (15); the overflow pipe (9) of the cyclone (3) is provided with a concentration control valve and a concentration sensor, and the concentration control valve and the concentration sensor are connected to the PLC (15). 15) connection; the PLC (15) is connected to the upper computer (16). 2. A closed-circuit automatic grinding and grading control system according to claim 1, characterized in that the automatic feeding control system (13) includes a start-stop controller for controlling the operation of the feeder (1) and Frequency conversion speed regulator, quality sensor and quality controller for measuring and controlling the feeding amount of the feeder (1). 3. A closed-circuit automatic grinding and grading control system according to claim 1, characterized in that the ball mill automatic control system (14) includes a grinding noise sensor for measuring the grinding noise of the ball mill (2), measuring Electricity sensor for the electric power of the ball mill (2), temperature sensor for collecting the temperature of the ball mill (2), vibration sensor for measuring the vibration of the ball mill (2), frequency converter and start-stop controller for controlling the operation of the ball mill (2).