CN101274299B - Method for starting and controlling ball mill - Google Patents
Method for starting and controlling ball mill Download PDFInfo
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- CN101274299B CN101274299B CN2008100687422A CN200810068742A CN101274299B CN 101274299 B CN101274299 B CN 101274299B CN 2008100687422 A CN2008100687422 A CN 2008100687422A CN 200810068742 A CN200810068742 A CN 200810068742A CN 101274299 B CN101274299 B CN 101274299B
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Abstract
The invention discloses a launching control method of a ball mill, which runs after a PLC control procedure removes mutual linkage and comprises the following steps: firstly, a high-low pressure lube station is launched, and the launching of a high-pressure pump lags one minute behind the launching of a low-pressure pump; then a compressed air station is launched so as to provide compressed air to a clutch mechanism; the clutch mechanism with slow-speed drive is hung manually, an electric motor with slow-speed drive is launched, and a cylinder body of a grinder starts to rotate at slow speed; a main driven electric motor is launched after the cylinder body of the grinder rotates at slow speed for 3 to 5 minutes; finally, the air clutch begins to work, the cylinder body of the grinder rotates, and the grinder system enters the working status. The launching control method of the ball mill of the invention changes the traditional equipment launching way into a way that gets into a preset rotating speed from a non-zero rotating speed, thus effectively reducing the initial moment that is required at the launching time and the wear of the air clutch mechanism, improving the running reliability and stability of the system equipments, and having the advantages of compactness, practicability, reliability and simple maintenance.
Description
Technical field
The present invention relates to be specially adapted for the control of fragmentation or pulverizing, in particular to the ball mill method for starting-controlling.
Background technology
Large-size ball mill typically refers to main drawing motor and surpasses the above ball mill equipment of 1000kW, and large-size ball mill is generally used for the ore grinding in the chemical enterprise, the cement slurry grinding in the cement industry etc.During ball mill work, material and a certain amount of water are entered inner barrel by feed end, motor drives the cylindrical shell rotation that medium (steel ball) is housed through air clutch, big pinion device, material is subjected between the bump of ball and the ball and the grinding between ball and the shell liner, fully expose unsalted surface, fully mixed,, finished the abrasive dust process after the relief hole of discharging sieve is discharged grinding machine.The traditional control method of ball mill has following shortcoming: grinding machine when static by clutch will finish the starting and the rotating shaft of motor rotating is embraced, thereby traction grinding machine rotation, about 6～8 seconds of this process need, clutch is at first opened the air inlet magnetic valve of its front end in this course, the clutch air bag charged into the gas that is not less than 0.6MP pressure in about 3 seconds, the wearing piece in the clutch air bag outside carries out meshing transmission with static mill driving pinion shaft immediately, rotate synchronously until grinding machine, touched synchronous rotation about 3～5 seconds from clutch facing and pinion shaft.To rated speed, apparent, the required starting torque of this starting is bigger from zero rotating speed in this starting, and the acceleration time of starting is also longer.In theory, the time that the wearing piece of clutch and pinion shaft touch synchronous rotation is short more good more, because during this period of time wearing piece and pinion shaft are in the state of sliding friction, the sheet temperature that can cause friction sliding friction sharply rises, thereby cause shorten the service life of wearing piece, and the wearing piece on the pneumatic clutch could be changed after entire mechanism need being lifted.
At present, the patent application that has some to relate to ball mill control, for example CN1142987 number " a kind of level of material for ball mill investigating method and device ", CN1063367 number " method for supervising of barrel-shaped steel ball mill stock ", CN1249211 number " middle automatic control method for pulverizing system of storage-type ball grinding mill ", CN1836786 number " pulverizing loop ball mill load control method for cement factory ", CN1970157 number " a kind of method of controlling ball milling powder purity and size distribution " etc.But do not see technical scheme to large-size ball mill starting control.
Summary of the invention
The object of the present invention is to provide a kind of ball mill method for starting-controlling, reduce starting torque, improve the safety operation level of wearing piece life-span and equipment.
The inventor recognizes in order to realize that the starting method among the present invention need take following measure by research: the one, and the cancellation machine that conducts electricity slowly reaches the interlocking between the transmission clutch at a slow speed with main drawing motor in the PLC control program; The 2nd, draw in the stop loop of driving motor by the trailing edge pulse triggering signal after the time-delay of pneumatic clutch start trigger at a slow speed.
Therefore, ball mill method for starting-controlling provided by the invention, in the PLC control program, remove chain therebetween after, undertaken by following steps:
The first step: the grinding machine prestart, at first start high-low pressure lubricating oil station, there are two low pressure fuel pump devices at the oil station, a job, another is standby, and working barrel and stand-by pump can switch mutually; Two high-pressure pumps start simultaneously, but the low-lift pump starting in 1 minute that will lag behind at least; Lubricating oil stands in the oily temperature control in exit between 35 ℃-45 ℃;
The inventor points out: the stiction when extreme pressure lubricant holds up cylindrical shell with the reduction starting by hydrostatic bearing, the low pressure lubricating oil at high-low pressure lubricating oil station is that the hydrostatic bearing of grinding mill barrel is lubricated, the lubricating when extreme pressure lubricant at high-low pressure lubricating oil station provides starting for the grinding mill barrel hydrostatic bearing.
Second step: the starting air station provides satisfactory compressed air for clutch mechanism;
The 3rd step: hung up by artificial transmission clutch at a slow speed, start driving motor at a slow speed, grinding mill barrel begins slow rotation under the drive of gear wheel and pinion; Grinding mill barrel slow rotation 3～5 minutes;
The inventor points out: material, steel ball and water in the cylindrical shell may be formed piece under the shutdown situation, the purpose that makes the grinding mill barrel slow rotation is that material in the cylindrical shell and steel ball are become flexible, and avoid occurring starting and take place eccentric and the damage hydrostatic bearing.
The inventor also points out: at driving motor duration of work at a slow speed, the main drawing motor pneumatic clutch is inoperable, the rotating ratio that its reason main drawing motor drives travelling gear by pneumatic clutch at a slow speed driving motor by transmission clutch driving travelling gear rotating speed is faster at a slow speed, to hurt at a slow speed transmission mechanism and start driving motor at a slow speed in order to be unlikely, must start at a slow speed.
The 4th step: starting main drawing motor;
The 5th step: pneumatic clutch work, grinding mill barrel rotates, and grinder system enters duty.
In the above-mentioned first step, when described oil temperature surpasses 45 ℃, open cooling water, cooler is started working; When oily temperature is lower than 30 ℃, connect electric heater by bimetallic thermometer, improve the temperature of oil, because oily temperature is when being lower than 30 ℃, oil pump efficient is low, starting is dangerous; Also cut off electric heater by bimetallic thermometer when oily temperature rise to 40 ℃, except that the filter commutation, entire work process is carried out automatically.
In above-mentioned second step, compressed-air actuated pressure is generally 0.95MP.
For further optimal control, the inventor also adds control program with the automatic stopping that passes slowly after system's starting, and promptly time-delay automatic transmission at a slow speed in 10 seconds stops after pneumatic clutch work.
Ball mill method for starting-controlling of the present invention, traditional start mode of equipment changed into from the non-zero rotating speed begin to start to rated speed, thereby the required initial torque when having reduced starting effectively, also just reduce the consume of pneumatic clutch mechanism, therefore improved the reliability of operation and the stability of system equipment, have succinct, practical, reliable, safeguard simple advantage.
Description of drawings
Accompanying drawing is a control method schematic diagram of the present invention.Among the figure, 1 is main drawing motor, and 2 is pneumatic clutch, and 3 is travelling gear, and 4 are transmission clutch at a slow speed, and 5 are driving motor at a slow speed, and 6 is the grinding mill barrel gear, and 7 is grinding mill barrel, and 8 is high-low pressure lubricating oil station, and 9 is air compression station.
The specific embodiment
Embodiment opens Φ 4.5 * L6.4m large-size ball mill that phosphorylcholine group electromechanical equipment installation company installs, uses in raw material portion of Guiyang Zhonghua Kailin Fertilizer Co., Ltd. through Guizhou.
PLC model in this example is the PLC of the S7-200 series of German SIEMENS company.The PLC program uses the STEP 7-MicroWIN V4.0 programming software of German SIEMENS company to write.
During starting, in the PLC control program, remove chain therebetween after, undertaken by following steps:
The grinding machine prestart at first starts high-low pressure lubricating oil station 8, starts low-lift pump earlier, and two high-pressure pumps start simultaneously after 1 minute; Lubricating oil stands in the oily temperature control in exit between 35 ℃-45 ℃; In second step, starting air station 9 provides the compressed air of the 0.95MPa that meets the requirements for clutch mechanism; The 3rd step, hang up by artificial transmission clutch at a slow speed 4, start driving motor 5 at a slow speed, grinding mill barrel 7 began slow rotation 3～5 minutes under the drive of gear wheel 6 and pinion 3; The 4th step, starting main drawing motor 1; The 5th step, pneumatic clutch 2 work, grinding mill barrel 7 rotates, and whole grinder system enters duty.
Embodiments of the invention are opened phosphorylcholine group electromechanical equipment installation company operation 3 years in Guizhou, prolong " non-failure operation time " of system equipment, and annual estimation is reduced expenses 65.12 ten thousand yuan.
Claims (3)
1. the method for starting-controlling of a ball mill, it is characterized in that this method be in the PLC control program, remove chain therebetween after, undertaken by following steps:
The first step: the grinding machine prestart, at first start high-low pressure lubricating oil station, the starting simultaneously afterwards in 1 minute of two high-pressure pump hysteresis low-lift pumps; Lubricating oil stands in the oily temperature control in exit between 35 ℃-45 ℃;
Second step: the starting air station provides satisfactory compressed air for clutch mechanism;
The 3rd step: hung up by artificial transmission clutch at a slow speed, start driving motor at a slow speed, grinding mill barrel begins slow rotation under the drive of gear wheel and pinion; Grinding mill barrel slow rotation 3～5 minutes;
The 4th step: starting main drawing motor;
The 5th step: pneumatic clutch work, grinding mill barrel rotates, and grinder system enters duty.
2. control method as claimed in claim 1 is characterized in that in the described first step, when described oil temperature surpasses 45 ℃, opens cooling water, and cooler is started working; When oily temperature is lower than 30 ℃, connect electric heater by bimetallic thermometer, improve the temperature of oil; Also cut off electric heater by bimetallic thermometer when oily temperature rise to 40 ℃, except that the filter commutation, entire work process is carried out automatically.
3. control method as claimed in claim 2 is characterized in that compressed-air actuated pressure is 0.95MP in described second step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100687422A CN101274299B (en) | 2008-05-14 | 2008-05-14 | Method for starting and controlling ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100687422A CN101274299B (en) | 2008-05-14 | 2008-05-14 | Method for starting and controlling ball mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101274299A CN101274299A (en) | 2008-10-01 |
| CN101274299B true CN101274299B (en) | 2011-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100687422A Expired - Fee Related CN101274299B (en) | 2008-05-14 | 2008-05-14 | Method for starting and controlling ball mill |
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| Country | Link |
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| CN (1) | CN101274299B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527478B (en) * | 2012-01-20 | 2014-06-04 | 广东摩德娜科技股份有限公司 | Ball grinder capable of achieving mechanical type soft starting |
| CN102580841A (en) * | 2012-03-12 | 2012-07-18 | 启东市南方润滑液压设备有限公司 | System for carrying out visual control on low-pressure redundancy of rod mill |
| CN106732985A (en) * | 2017-01-13 | 2017-05-31 | 北新集团建材股份有限公司 | A kind of control method of ball mill |
| CN107086818B (en) * | 2017-05-08 | 2019-06-04 | 深圳市海浦蒙特科技有限公司 | The starting method and system of inertia load |
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2008
- 2008-05-14 CN CN2008100687422A patent/CN101274299B/en not_active Expired - Fee Related
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| CN101274299A (en) | 2008-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUIZHOU KAILIN GROUP CO., LTD. Free format text: FORMER NAME: KAILIN (GROUP) CO., LTD., GUIZHOU |
|
| CP03 | Change of name, title or address |
Address after: No. 237 Jinyang City Kailin Lake District Road 550009 Guizhou city of Guiyang Province Patentee after: Phosphorylcholine group limited-liability company is opened in Guizhou Address before: 550002, Haitian building, No. 203 Zhonghua South Road, Guizhou, Guiyang Patentee before: Guizhou Kailin (Group) Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20170514 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |