CN112076848B - Ball mill operation alarm protection system and control method thereof - Google Patents
Ball mill operation alarm protection system and control method thereof Download PDFInfo
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- CN112076848B CN112076848B CN202010838490.8A CN202010838490A CN112076848B CN 112076848 B CN112076848 B CN 112076848B CN 202010838490 A CN202010838490 A CN 202010838490A CN 112076848 B CN112076848 B CN 112076848B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/1805—Monitoring devices for tumbling mills
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Abstract
The invention discloses an alarm protection system for operation of a ball mill, and belongs to the field of ball mill protection systems. Ball mill operation warning protection system includes the ball mill body, press from both sides the cover, drive module, feeding module, business turn over water module, alarm module and PLC controller, drive module is installed to the one end of ball mill body, the ball mill body is connected with feeding module, the ball mill body outside is equipped with the cover that presss from both sides, business turn over water module and press from both sides the cover and be connected, drive module, feeding module, business turn over water module and alarm module all with PLC controller electric connection, drive module is used for driving ball mill body function, feeding module is used for adding the raw materials for the ball mill body, business turn over water module is used for providing the cooling water for pressing from both sides the cover, alarm module is used for indicateing ball mill malfunction alerting, the PLC controller is used for controlling drive module, feeding module, business turn over water module and alarm module. The invention can simultaneously implement control and alarm, has high automation degree and high safety, improves the working efficiency and reduces the labor force.
Description
Technical Field
The invention relates to the technical field of ball mill protection systems, in particular to a ball mill operation alarm protection system and a control method thereof.
Background
The ball mill is widely used in the production industries of cement, silicate products, novel building materials, refractory materials, chemical fertilizers, black and non-ferrous metal ore dressing, glass ceramics and the like, and is used for dry or wet grinding of various ores and other grindable materials.
At present, a ball mill is only provided with a simple manual switch controller, and cannot cope with the sudden state of equipment in the use process of the equipment, if a jacket lacks cooling water, no prompt and no protection are provided, the ball mill can be abnormally heated, the interior of the equipment is damaged, and particularly major equipment accidents such as the breakage of a stirring main shaft of key equipment and the like are caused; the speed reducer and the motor of the driving ball mill have no protective measures when sudden abnormality, overload and over-high current occur, and the motor is easy to burn out and other serious faults when in overload operation for a long time.
Disclosure of Invention
The invention aims to provide an alarm protection system for operation of a ball mill, which solves the problems that automatic detection and fault alarm cannot be carried out on ball mill equipment, and the automation degree is low. According to the ball mill operation alarm protection system, the conditions of the motor, the speed reducer and the jacket can be detected at the same time, control and alarm are implemented at the same time, the automation degree is high, the safety is high, the working efficiency is improved, and the labor force is reduced, and the technical scheme adopted by the ball mill operation alarm protection system is as follows:
according to one aspect of the invention, the ball mill operation alarm protection system comprises a ball mill body, a jacket, a driving module, a feeding module, a water inlet and outlet module, an alarm module and a PLC (programmable logic controller), wherein the driving module is fixedly installed at one end of the ball mill body, the ball mill body is fixedly connected with the feeding module, the jacket is arranged on the outer side of the ball mill body, the water inlet and outlet module is connected with the jacket, and the driving module, the feeding module, the water inlet and outlet module and the alarm module are electrically connected with the PLC;
the ball mill comprises a ball mill body, a driving module, a feeding module, a water inlet and outlet module, a jacket, an alarm module and a PLC (programmable logic controller), wherein the driving module is used for driving the ball mill body to operate, the feeding module is used for adding raw materials into the ball mill body, the water inlet and outlet module is used for providing cooling water for the jacket, the alarm module is used for prompting the fault alarm of the ball mill, and the PLC is used for controlling the driving module, the feeding module, the water inlet and outlet module and the alarm module.
Preferably, the driving module comprises a motor, a speed reducer, a frequency converter and a frequency converter controller, the speed reducer is fixedly installed on an output shaft of the motor, the output shaft of the speed reducer is fixedly connected with the ball mill body, the output end of the frequency converter is electrically connected with the motor, the input end of the frequency converter is electrically connected with the output end of the frequency converter controller, the input end of the frequency converter controller is electrically connected with the PLC, the speed reducer is connected with the PLC through a temperature sensing control assembly, and the temperature sensing control assembly is used for sensing the temperature of the speed reducer and controlling the speed reducer to operate.
Preferably, the temperature sensing control assembly comprises a speed reducer temperature sensor and a speed reducer temperature controller, the output end of the speed reducer temperature sensor is connected with the speed reducer, the input end of the speed reducer temperature sensor is electrically connected with the output end of the speed reducer temperature controller, and the input end of the speed reducer temperature controller is electrically connected with the PLC.
Preferably, the driving module further comprises a motor induction coil, an output end of the motor induction coil is electrically connected with an input end of the frequency converter controller, and an input end of the motor induction coil is electrically connected with the PLC controller.
Preferably, the feeding module includes the thick liquids pond, advances the stuff pump, advances the thick liquids pump controller and advances thick liquids pump induction coil, advance the stuff pump with the thick liquids pond is connected, advance the output of stuff pump with this body coupling of ball mill, advance the input of stuff pump with advance the input electric connection of thick liquids pump controller, advance the input of thick liquids pump controller with PLC controller electric connection, advance thick liquids pump induction coil's output with advance the input electric connection of thick liquids pump controller, advance thick liquids pump induction coil's input with PLC controller electric connection.
Preferably, the water inlet and outlet module comprises a water inlet pipe, a water outlet pipe, a check valve, an electric control valve, a tap water pipe, an electric contact pressure gauge, a jacket temperature sensor and a jacket temperature controller, the water inlet pipe is fixedly connected to one side of the jacket, the water outlet pipe is fixedly connected to one side of the jacket far away from the water inlet pipe, one end of the check valve is connected with the water inlet pipe, the other end of the check valve is connected with the electric control valve, the electric control valve is connected with the tap water pipe through an inspection valve, the electric control valve is electrically connected with the PLC controller, a water flow switch is arranged between the electric control valve and the inspection valve, the water flow switch is electrically connected with the PLC controller, one end of the electric contact pressure gauge is connected with the jacket, the other end of the electric contact pressure gauge is connected with the PLC controller, one end of the jacket temperature sensor is connected with the jacket, the other end of the jacket temperature sensor is connected with one end of the jacket temperature controller, and the end, far away from the jacket sensor, of the jacket temperature controller is connected with the PLC.
Preferably, the alarm module comprises a contactor assembly and an alarm assembly, the contactor assembly comprises an operation signal output contactor, an overload alarm signal output contactor, a water shortage alarm signal output contactor and a high temperature alarm signal output contactor, the alarm assembly comprises an overload alarm, a water shortage alarm and a high temperature alarm, the input end of the overload alarm signal output contactor, the input end of the water shortage alarm signal output contactor and the input end of the high temperature alarm signal output contactor are electrically connected with the PLC, the output end of the overload alarm signal output contactor is electrically connected with the overload alarm, the output end of the water shortage alarm signal output contactor is electrically connected with the water shortage alarm, the output end of the high-temperature alarm signal output contactor is electrically connected with the high-temperature alarm.
Preferably, the control method of the ball mill operation alarm protection system comprises the following steps:
(1) the PLC controller controls the frequency converter controller to operate, the frequency converter controller controls the frequency converter to operate, the frequency converter controls the motor to operate, the motor controls the speed reducer to operate, the speed reducer provides power for the ball mill body, when the motor induction coil detects that the current of the motor is abnormal, the PLC controller forcibly reduces the frequency of the motor, keeps the current of the motor normal, and outputs a contactor through an overload alarm signal to control an overload alarm to give an alarm prompt until a worker finishes correction operation or finishes abnormal treatment; when the worker does not finish the correction operation, the PLC controller forcibly shuts down the machine and gives an alarm through an overload alarm to prompt; when the speed reducer temperature sensor senses that the temperature of the speed reducer is abnormal, the speed reducer temperature sensor feeds a temperature abnormal signal back to the PLC, the PLC sends a control signal to be transmitted to the speed reducer temperature controller, the speed reducer temperature controller controls the speed reducer to stop working, and the PLC controls the high-temperature alarm to alarm through the high-temperature alarm signal output contactor;
(2) in the operation process of the ball mill body, cooling water is continuously introduced into a jacket outside the ball mill body, an electric contact pressure gauge detects the pressure of cooling water in the jacket, pressure signals are transmitted to a PLC (programmable logic controller), whether water is deficient in the jacket is judged through the PLC, if water is deficient, the PLC outputs a stop signal, a system is closed, the water deficiency alarm prompt is controlled through a water deficiency alarm signal output contactor, when water is deficient in the jacket and water pressure exists in a tap water pipe, an electric control valve can be automatically opened, water is added into the jacket for cooling, meanwhile, a jacket temperature sensor detects the temperature in the jacket, the temperature in the jacket is too high, the jacket temperature sensor transmits temperature abnormal signals to the PLC, the PLC outputs the contactor through high temperature alarm signals to control the high temperature alarm prompt, and the ball mill body is stopped forcibly.
The technical scheme adopted by the invention has the following remarkable effects:
the ball mill operation alarm protection system comprises a ball mill body, a jacket, a driving module, a feeding module, a water inlet and outlet module, an alarm module and a PLC (programmable logic controller), wherein the driving module is installed at one end of the ball mill body, the ball mill body is connected with the feeding module, the jacket is arranged on the outer side of the ball mill body, the water inlet and outlet module is connected with the jacket, the driving module, the feeding module, the water inlet and outlet module and the alarm module are electrically connected with the PLC, the driving module is used for driving the ball mill body to operate, the feeding module is used for adding raw materials into the ball mill body, the water inlet and outlet module is used for providing cooling water for the jacket, the alarm module is used for prompting the fault alarm of the ball mill, and the PLC is used for controlling the driving module, the feeding module, the water inlet and outlet module and the alarm module; the invention can simultaneously implement control and alarm, has high automation degree and high safety, improves the working efficiency and reduces the labor force.
Drawings
Fig. 1 is a schematic structural view of the present invention.
1-a ball mill body, 2-a jacket, 3-a motor, 4-a speed reducer, 5-a water inlet pipe and 6-a water outlet pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
As shown in figure 1, the alarm protection system for the operation of the ball mill comprises a ball mill body 1, a jacket 2, a driving module and a feeding module, business turn over water module, alarm module and PLC controller, the one end fixed mounting of ball mill body 1 has drive module, drive module includes motor 3, speed reducer 4, converter and converter controller, 4 fixed mounting of speed reducer are on motor 3's output shaft, 1 fixed connection of speed reducer 4's output shaft and ball mill body, the output and the 3 electric connection of motor of converter, the input of converter and the output electric connection of converter controller, the input and the PLC controller electric connection of converter controller, speed reducer 4 is connected with the PLC controller through the temperature-sensing control subassembly, the temperature-sensing control subassembly is used for the temperature of response speed reducer and controls the speed reducer operation. The temperature sensing control assembly comprises a speed reducer temperature sensor and a speed reducer temperature controller, the output end of the speed reducer temperature sensor is connected with the speed reducer 4, the input end of the speed reducer temperature sensor is electrically connected with the output end of the speed reducer temperature controller, and the input end of the speed reducer temperature controller is electrically connected with the PLC. The driving module further comprises a motor induction coil, the output end of the motor induction coil is electrically connected with the input end of the frequency converter controller, and the input end of the motor induction coil is electrically connected with the PLC controller. The motor is matched with the speed reducer to drive the ball mill, so that the ball mill can normally run, the motor induction coil can detect the current of the motor, when the current of the motor 3 is abnormal, the motor induction coil transmits a signal to the PLC, the PLC transmits a control signal to the frequency converter controller, the frequency converter controller forcibly enables the frequency converter to reduce the frequency of the motor 3, the current is kept normal until an operator finishes correction operation or finishes abnormal processing, if the operator does not finish correction operation within a set parameter range, the PLC forcibly shuts down according to the flow. The speed reducer temperature sensor detects the temperature of the speed reducer 4, when the temperature of the speed reducer 4 is detected to be abnormal, the PLC controls the speed reducer temperature controller to control the speed reducer to stop working and simultaneously stop the system working within a set parameter range if a worker does not correct the temperature.
Fixedly connected with feeding module on ball mill body 1, feeding module includes the thick liquids pond, advance the stuff pump controller and advance thick liquids pump induction coil, it is connected with the thick liquids pond to advance the stuff pump, the output and the ball mill body 1 of advancing the stuff pump are connected, the input of advancing the stuff pump and the input electric connection who advances the stuff pump controller, the input and the PLC controller electric connection who advances the stuff pump controller, the output of advancing stuff pump induction coil and the input electric connection who advances the stuff pump controller, advance stuff pump induction coil's input and PLC controller electric connection. The slurry inlet pump pumps the slurry in the slurry pool into the ball mill, the current of the slurry inlet pump can be detected through the slurry inlet pump induction coil, when the running current of the slurry inlet pump is abnormal, the slurry inlet pump induction coil transmits an abnormal signal to the PLC controller, the PLC controller transmits a control signal to the slurry inlet pump controller, and the slurry inlet pump controller controls the slurry inlet pump to run and stop, so that faults are avoided.
The ball mill body is provided with a jacket 2 at the outer side, the water inlet and outlet module is connected with the jacket, the water inlet and outlet module comprises a water inlet pipe 5, a water outlet pipe 6, a check valve, an electric control valve, a tap water pipe, an electric contact pressure gauge, a jacket temperature sensor and a jacket temperature controller, the water inlet pipe 5 is fixedly connected with one side of the jacket 2, the water outlet pipe 6 is fixedly connected with one side of the jacket 2 far away from the water inlet pipe, one end of the check valve is connected with the water inlet pipe 5, the other end of the check valve is connected with the electric control valve, the electric control valve is electrically connected with a tap water pipe through an overhaul valve, a water flow switch is arranged between the electric control valve and the overhaul valve, the water flow switch is electrically connected with a PLC controller, one end of the electric contact pressure gauge is connected with the jacket 2, the other end of the electric contact pressure gauge is connected with the PLC controller, one end of the jacket temperature sensor is connected with the jacket 2, the other end of the jacket temperature sensor is connected with one end of a jacket temperature controller, and the end, far away from the jacket sensor, of the jacket temperature controller is connected with the PLC. An electric contact pressure gauge detects the pressure of cooling water in the jacket 2, and when the system detects that the jacket 2 is lack of water, an electric control valve is automatically opened to add water into the jacket for cooling; the temperature sensor of the jacket detects the temperature in the jacket 2, when the temperature in the jacket 2 is too high, the system can be forcibly stopped to avoid the operation of the mill under the condition of no cooling water.
Alarm module and PLC controller electric connection, alarm module includes contactor subassembly and alarm subassembly, the contactor subassembly includes operation signal output contactor, overload alarm signal output contactor, water shortage alarm signal output contactor and high temperature alarm signal output contactor, the alarm subassembly includes overload alarm, water shortage alarm and high temperature alarm, overload alarm signal output contactor's input, water shortage alarm signal output contactor's input and high temperature alarm signal output contactor's input all with PLC controller electric connection, overload alarm signal output contactor's output and overload alarm electric connection, water shortage alarm signal output contactor's output and water shortage alarm electric connection, high temperature alarm signal output contactor's output and high temperature alarm electric connection. When the temperature in the speed reducer 4 and the jacket 2 is too high, a high-temperature alarm can be triggered to alarm, when the motor 3 and the slurry inlet pump run in overload, an overload alarm can be triggered to alarm, and when the jacket 2 is lack of water, a water-lack alarm can be triggered to alarm.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (2)
1. The ball mill operation alarm protection system is characterized by comprising a ball mill body, a jacket, a driving module, a feeding module, a water inlet and outlet module, an alarm module and a PLC (programmable logic controller), wherein the driving module is fixedly installed at one end of the ball mill body;
the device comprises a ball mill body, a driving module, a feeding module, a water inlet and outlet module, an alarm module and a PLC (programmable logic controller), wherein the driving module is used for driving the ball mill body to operate, the feeding module is used for adding raw materials into the ball mill body, the water inlet and outlet module is used for providing cooling water for a jacket, the alarm module is used for prompting the ball mill to give an alarm when a fault occurs, and the PLC is used for controlling the driving module, the feeding module, the water inlet and outlet module and the alarm module;
the ball mill comprises a ball mill body, a driving module, a ball mill body, a ball mill controller, a ball mill, a temperature sensing control assembly, a temperature sensor and a temperature sensor, wherein the driving module comprises a motor, a speed reducer, a frequency converter and a frequency converter controller, the speed reducer is fixedly installed on an output shaft of the motor, the output shaft of the speed reducer is fixedly connected with the ball mill body, the output end of the frequency converter is electrically connected with the motor, the input end of the frequency converter is electrically connected with the output end of the frequency converter controller, the input end of the frequency converter controller is electrically connected with the PLC, the speed reducer is connected with the PLC through the temperature sensing control assembly, and the temperature sensing control assembly is used for sensing the temperature of the speed reducer and controlling the speed reducer to run;
the driving module further comprises a motor induction coil, and the output end of the motor induction coil is electrically connected with the input end of the PLC; the motor is matched with the speed reducer to provide driving for the ball mill, so that the ball mill can normally run, the motor induction coil can detect the current of the motor, when the current of the motor is abnormal, the motor induction coil transmits a signal to the PLC, the PLC transmits a control signal to the frequency converter controller, the frequency converter controller forcibly enables the frequency converter to reduce the frequency of the motor and keep the current normal until an operator finishes correction operation or finishes abnormal processing, and if the operator does not finish correction operation within a set parameter range, the PLC forcibly shuts down the ball mill according to the flow; the speed reducer temperature sensor detects the temperature of the speed reducer, when the temperature of the speed reducer is detected to be abnormal, within a set parameter range, if a worker does not correct the temperature, the PLC controls the speed reducer temperature controller to control the speed reducer to stop working, and meanwhile, the system stops working;
the water inlet and outlet module comprises a water inlet pipe, a water outlet pipe, a check valve, an electric control valve, a tap water pipe, an electric contact pressure gauge, a jacket temperature sensor and a jacket temperature controller, wherein the water inlet pipe is fixedly connected to one side of the jacket, the water outlet pipe is fixedly connected to one side of the jacket far away from the water inlet pipe, one end of the check valve is connected with the water inlet pipe, the other end of the check valve is connected with the electric control valve, the electric control valve is connected with the tap water pipe through a maintenance valve, the electric control valve is electrically connected with the PLC controller, a water flow switch is arranged between the electric control valve and the maintenance valve, the water flow switch is electrically connected with the PLC controller, one end of the electric contact pressure gauge is connected with the jacket, the other end of the electric contact pressure gauge is connected with the PLC controller, and one end of the jacket temperature sensor is connected with the jacket, the other end of the jacket temperature sensor is connected with one end of the jacket temperature controller, and one end of the jacket temperature controller, which is far away from the jacket sensor, is connected with the PLC; an electric contact pressure gauge detects the pressure of cooling water in the jacket, and when the system detects that the jacket lacks water, the system automatically opens an electric control valve to add water into the jacket for cooling; the jacket temperature sensor detects the temperature in the jacket, and when the temperature in the jacket is too high, the system can be forcibly stopped, so that the operation of the mill under the condition of no cooling water is avoided;
the alarm module comprises a contactor assembly and an alarm assembly, the contactor assembly comprises an operation signal output contactor, an overload alarm signal output contactor, a water shortage alarm signal output contactor and a high temperature alarm signal output contactor, the alarm assembly comprises an overload alarm, a water shortage alarm and a high temperature alarm, the input end of the overload alarm signal output contactor, the input end of the water shortage alarm signal output contactor and the input end of the high temperature alarm signal output contactor are electrically connected with the PLC, the output end of the overload alarm signal output contactor is electrically connected with the overload alarm, the output end of the water shortage alarm signal output contactor is electrically connected with the water shortage alarm, the output end of the high-temperature alarm signal output contactor is electrically connected with the high-temperature alarm; when the temperature in the speed reducer and the jacket is too high, a high-temperature alarm is triggered to give an alarm, when the motor and the slurry inlet pump run in overload, an overload alarm is triggered to give an alarm, and when the jacket lacks water, a water-shortage alarm is triggered to give an alarm;
the temperature sensing control assembly comprises a speed reducer temperature sensor and a speed reducer temperature controller, the input end of the speed reducer temperature sensor is connected with the speed reducer, and the output end of the speed reducer temperature sensor is electrically connected with the input end of the PLC controller;
the feeding module comprises a slurry pool, a slurry feeding pump controller and a slurry feeding pump induction coil, wherein the slurry feeding pump is connected with the slurry pool, the output end of the slurry feeding pump is connected with the ball mill body, the input end of the slurry feeding pump is electrically connected with the output end of the slurry feeding pump controller, the input end of the slurry feeding pump controller is electrically connected with the PLC controller, and the output end of the slurry feeding pump induction coil is electrically connected with the input end of the PLC controller; the slurry inlet pump pumps the slurry in the slurry pool into the ball mill, the current of the slurry inlet pump can be detected through the slurry inlet pump induction coil, when the running current of the slurry inlet pump is abnormal, the slurry inlet pump induction coil transmits an abnormal signal to the PLC controller, the PLC controller transmits a control signal to the slurry inlet pump controller, and the slurry inlet pump controller controls the slurry inlet pump to run and stop, so that faults are avoided.
2. A control method of an alarm protection system for the operation of a ball mill according to claim 1, characterized by comprising the following steps:
(1) the PLC controller controls the operation of the frequency converter controller, the frequency converter controller controls the operation of the frequency converter, the frequency converter controls the operation of the motor, the motor controls the operation of the speed reducer, the speed reducer provides power for the ball mill body, when the motor induction coil detects abnormal motor current, the PLC controller forcibly reduces the motor frequency, keeps the motor current normal, controls the alarm prompt of the overload alarm through the overload alarm signal output contactor until a worker finishes correcting operation or finishes abnormal processing, when the worker does not finish correcting operation, the PLC controller forcibly shuts down and alarms through the overload alarm, when the temperature sensor of the speed reducer senses abnormal temperature, the temperature sensor of the speed reducer feeds back the abnormal temperature signal to the PLC controller, the PLC controller sends a control signal to the temperature controller of the speed reducer, and the temperature controller of the speed reducer controls the speed reducer to stop working, the PLC outputs a contactor through a high-temperature alarm signal to control a high-temperature alarm to alarm;
(2) in the operation process of the ball mill body, cooling water is continuously introduced into a jacket outside the ball mill body, an electric contact pressure gauge detects the pressure of cooling water in the jacket, pressure signals are transmitted to a PLC (programmable logic controller), whether water is deficient in the jacket is judged through the PLC, if water is deficient, the PLC outputs a stop signal, a system is closed, the water deficiency alarm prompt is controlled through a water deficiency alarm signal output contactor, when water is deficient in the jacket and water pressure exists in a tap water pipe, an electric control valve can be automatically opened, water is added into the jacket for cooling, meanwhile, a jacket temperature sensor detects the temperature in the jacket, the temperature in the jacket is too high, the jacket temperature sensor transmits temperature abnormal signals to the PLC, the PLC outputs the contactor through high temperature alarm signals to control the high temperature alarm prompt, and the ball mill body is stopped forcibly.
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| GB808061A (en) * | 1954-11-17 | 1959-01-28 | Smidth & Co As F L | Improvements relating to the grinding of cement raw meal, cement clinker or other materials |
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| CN112076848A (en) | 2020-12-15 |
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