CN202715471U - Control system for lubrication protection of medium-speed mill for blast furnace milling - Google Patents
Control system for lubrication protection of medium-speed mill for blast furnace milling Download PDFInfo
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- CN202715471U CN202715471U CN 201220252944 CN201220252944U CN202715471U CN 202715471 U CN202715471 U CN 202715471U CN 201220252944 CN201220252944 CN 201220252944 CN 201220252944 U CN201220252944 U CN 201220252944U CN 202715471 U CN202715471 U CN 202715471U
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- blast furnace
- control system
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- speed pulverizer
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Abstract
The utility model discloses a control system for lubrication protection of a medium-speed mill for blast furnace milling. The system comprises a lubrication oil tank, wherein lubrication oil is contained in the lubrication oil tank, and a circulation line of the lubrication oil is formed between the lubrication oil tank and the medium-speed mill; the circulation line between the lubrication oil tank and the medium-speed mill is sequentially provided with a lubrication oil pump, a filter, a pressure switch and a flow switch, and two sides of the filter are connected with a differential pressure switch; a circulation line between the medium-speed mill and the lubrication oil tank is sequentially provided with a return oil heater and a temperature switch; and the lubrication oil tank is provided with an oil tank heater and a liquid level switch. According to the control system disclosed by the utility model, the automatic control on the lubrication protection of the medium-speed mill can be realized, non-stop oiling can be realized, and the oiling reliability is improved; and a mill bearing is lubricated in time, the failure rate of equipment and the blast furnace coal injection cost are reduced, the labor intensity of personnel is reduced simultaneously, an equipment management process is simplified, the automation level and the reliability are improved, and the safety in production is powerfully guaranteed.
Description
Technical field
The utility model relates to blast furnace powder-making technique field, specifically, is a kind of blast furnace powder process medium-speed pulverizer lubrication protection control system.
Background technology
Medium-speed pulverizer is a kind of high-efficiency and energy-saving type coal pulverizer, is applicable to the medium-hard materials such as grinding bituminous coal, can be widely used in the pulverized coal preparation system of the industries such as electric power, metallurgy, building materials, chemical industry, particularly is applied in large quantities in the blast furnace pulverized coal preparation system.The normal operation of the lubricating utensil of medium-speed pulverizer is most important, directly affects the work of whole downstream production line.And most long-established enterprises equipment is outmoded, the reliability of lubricating system is very low, does not much all have indirect or direct temperature measuring equipment, in servicely grinds watt, the serious accident of tile kilning happens occasionally, each repairing process all causes whole production line to stop production for a long time, causes huge economic loss.For large-scale iron-smelter, the medium-speed pulverizer number of units is more, and maintenance workload is very large, becomes " bottleneck " equipment that the downstream process breeze blowing is produced.Grinding machine must be lubricated when start and stop and operation.In the practical application, usually to adopt the high-low pressure lubrication station to be lubricated for large-sized grinder, with the normal operation of assurance grinding machine and the safety of bearing shell.At present, a lot of lubrication statioies also adopt relay logic to control, and the automaticity of this type systematic is very low, and most of operation is all by manually finishing.And its electric wiring is complicated, and reliability is not high, and inconvenience is safeguarded.
The utility model content
The technical problems to be solved in the utility model provides a kind of blast furnace powder process medium-speed pulverizer lubrication protection control system, it is simple in structure, failure rate is low, control program rationally, perfect in shape and function, power consumptive province, be convenient to safeguard and to have high reliability.
In order to solve the problems of the technologies described above, the utility model provides a kind of blast furnace powder process medium-speed pulverizer lubrication protection control system, comprise grease-box, be loaded with lubricating oil in the described grease-box, between described grease-box and medium-speed pulverizer, form the circulation line of lubricating oil; Be provided with successively grease pump, filter, pressure switch and flow switch on the circulation line between described grease-box and the medium-speed pulverizer, described filter both sides are connected with pressure difference switch; On the circulation line between medium-speed pulverizer and the grease-box, be provided with successively oil return heater and temperature switch; Be provided with fuel tank heater and liquid-level switch at described grease-box.
Further, also be provided with heat exchanger on the circulation line between described filter and the pressure switch.
Further, also be provided with pressure display table on the circulation line between described heat exchanger and the pressure switch.
Further, also be provided with thermal resistance on the circulation line between described pressure switch and the flow switch.
Further, also be provided with flow monitor instrument on the circulation line between described thermal resistance and the flow switch.
Further, described filter both sides also are connected with the pressure reduction display list.
Further, also be provided with thermal resistance on the described grease-box.
Further, described grease pump one side is parallel with emergency bearing oil pump.
Blast furnace powder process medium-speed pulverizer lubrication protection control system of the present utility model can realize the automatic control to the sliding protection of middling speed tribology, and can realize not shutting down oiling, has improved the oiling reliability; The grinding machine bearing is in time lubricated, and has reduced equipment failure rate and pulverized coal injection expense, has reduced simultaneously personnel labor intensity, has simplified the equipment control flow process, improves the gentle reliability of Automated water, powerful guarantee the safety of producing.
Description of drawings
Fig. 1 is the schematic diagram of blast furnace powder process medium-speed pulverizer lubrication protection control system of the present utility model.
Fig. 2 utilizes system of the present utility model to be lubricated the flow chart of protection control.
Fig. 3 is medium speed mill emergency shutdown schematic flow sheet.
Among the figure: 1. medium-speed pulverizer; 2. grease-box; 3. grease pump; 4. emergency bearing oil pump; 5. filter; 6. heat exchanger; 7. fuel tank heater; 8. liquid-level switch; 9. pressure difference switch; 10. pressure reduction display list; 11. pressure display table; 12. pressure switch; 13. thermal resistance; 14. flow monitor instrument; 15. flow switch; 16. oil return heater; 17. temperature switch; 18. thermal resistance.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the utility model and being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1, an embodiment of blast furnace powder process medium-speed pulverizer lubrication protection control system of the present utility model comprises grease-box 2, splendid attire lubricating oil in the grease-box 2; Form the circulation line of lubricating oil between described grease-box 2 and the medium-speed pulverizer 1; Be provided with successively grease pump 3, filter 5, heat exchanger 6, pressure display table 11, pressure switch 12, thermal resistance 13, flow monitor instrument 14 and flow switch 15 on the circulation line between grease-box 2 and the medium-speed pulverizer 1, described filter 5 both sides are connected with pressure difference switch 9 and pressure reduction display list 10; Be provided with successively oil return heater 16 and temperature switch 17 on the circulation line between medium-speed pulverizer 1 and the grease-box 2; Described grease-box 2 is provided with fuel tank heater 7, thermal resistance 18 and liquid-level switch 8.Grease pump one side is parallel with emergency bearing oil pump 4.
Output control signal when wherein, described pressure switch 12, flow switch 15, pressure difference switch 9, temperature switch 17 and liquid-level switch 8 are respectively applied at it that each self-monitoring parameter reaches predetermined value; And pressure display table 11, flow monitor instrument 14 and pressure reduction display list 10 are respectively applied to show the lubricating oil pressure reduction of lubricating oil pressure, flow and filter for molten both sides in the circulation line, and thermal resistance 15 and thermal resistance 18 are respectively applied to detect the temperature in circulation line and the grease-box.
As shown in Figures 2 and 3, the running of blast furnace powder process medium-speed pulverizer lubrication protection control system of the present utility model is:
Whether A, the lubricating oil temperature and the lubricating oil liquid level that detect in the grease-box reach preset value, if reach, start grease pump; If lubricating oil temperature does not reach preset value, the fuel tank heater of then opening in the grease-box heats lubricating oil; Stopped heating when being heated to than high 3 ~ 5 ℃ of preset temperature.
After B, grease pump moved a Preset Time, whether the pressure reduction of filter both sides was lower than preset value greater than preset value respectively for lubricating oil oil pressure, Lubricating Oil Temperature, flow of lubrication in the detection circulation line; If, send enabling signal for corresponding medium-speed pulverizer, start medium-speed pulverizer;
Behind C, the medium-speed pulverizer orderly closedown, send feedback signal, grease pump continues to shut down behind operation one Preset Time.
Wherein, in the described steps A, the preset value of described lubricating oil temperature is 30 ℃, and the preset value of described lubricating oil liquid level is 200mm; Among the described step B, the Preset Time of described grease pump operation is 3 minutes; The preset value of the lubricating oil oil pressure in the described circulation line, Lubricating Oil Temperature, flow of lubrication is respectively 0.9MPa, 30 ℃, 121L/min; The pressure reduction preset value of described filter both sides is 0.2MPa.
In addition, in described medium-speed pulverizer running, if the oil temperature in the grease-box is lower than 35 ℃, the fuel tank heater of opening in the grease-box advances heating and reports to the police stopped heating when the oil temperature in the grease-box reaches 40 ℃; If returning-oil temperature is lower than 45 ℃, opens the oil return heater and report to the police stopped heating when returning-oil temperature reaches 49 ℃; If the pressure in the grease-box is lower than 0.7MPa, open emergency bearing oil pump 4.If behind the unlatching emergency bearing oil pump in 40 seconds the pressure in the grease-box also do not reach 0.7Mpa and then report to the police; If the pressure in the grease-box continues to drop to 0.5 MPa, then stop grease pump to check fault.
In described medium-speed pulverizer running, if the liquid level in the grease-box is lower than 200mm, or the fuel tank oil temperature is lower than 25 ℃, or the oil temperature of lubricating oil then stops grease pump to check fault greater than 65 ℃, stops simultaneously the medium-speed pulverizer grinder system.
Among the described step C, the Preset Time that described grease pump continues operation is 25 ~ 35 minutes, is preferably 30 minutes.
The utility model improves the automaticity of medium-speed pulverizer lubrication protection system greatly, has alleviated post personnel's labour intensity.Be used with sensors such as electric contact pressure switch, thermometers, the security of system's control, reliability are improved, the fault rate of medium-speed pulverizer operation is reduced greatly, improved the running rate of equipment.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and protection domain of the present utility model is not limited to this.Being equal to that those skilled in the art do on the utility model basis substitutes or conversion, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (8)
1. a blast furnace powder process medium-speed pulverizer lubrication protection control system is characterized in that, comprises grease-box, is loaded with lubricating oil in the described grease-box, forms the circulation line of lubricating oil between described grease-box and medium-speed pulverizer; Be provided with successively grease pump, filter, pressure switch and flow switch on the circulation line between described grease-box and the medium-speed pulverizer, described filter both sides are connected with pressure difference switch; On the circulation line between medium-speed pulverizer and the grease-box, be provided with successively oil return heater and temperature switch; Be provided with fuel tank heater and liquid-level switch at described grease-box.
2. blast furnace powder process medium-speed pulverizer lubrication protection control system according to claim 1 is characterized in that, also is provided with heat exchanger on the circulation line between described filter and the pressure switch.
3. blast furnace powder process medium-speed pulverizer lubrication protection control system according to claim 2 is characterized in that, also is provided with pressure display table on the circulation line between described heat exchanger and the pressure switch.
4. blast furnace powder process medium-speed pulverizer lubrication protection control system according to claim 1 is characterized in that, also is provided with thermal resistance on the circulation line between described pressure switch and the flow switch.
5. blast furnace powder process medium-speed pulverizer lubrication protection control system according to claim 4 is characterized in that, also is provided with flow monitor instrument on the circulation line between described thermal resistance and the flow switch.
6. blast furnace powder process medium-speed pulverizer lubrication protection control system according to claim 1 is characterized in that described filter both sides also are connected with the pressure reduction display list.
7. blast furnace powder process medium-speed pulverizer lubrication protection control system according to claim 1 is characterized in that, also is provided with thermal resistance on the described grease-box.
8. blast furnace powder process medium-speed pulverizer lubrication protection control system according to claim 1 is characterized in that described grease pump one side is parallel with emergency bearing oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220252944 CN202715471U (en) | 2012-05-31 | 2012-05-31 | Control system for lubrication protection of medium-speed mill for blast furnace milling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220252944 CN202715471U (en) | 2012-05-31 | 2012-05-31 | Control system for lubrication protection of medium-speed mill for blast furnace milling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202715471U true CN202715471U (en) | 2013-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220252944 Expired - Fee Related CN202715471U (en) | 2012-05-31 | 2012-05-31 | Control system for lubrication protection of medium-speed mill for blast furnace milling |
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| CN (1) | CN202715471U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698861A (en) * | 2012-05-31 | 2012-10-03 | 中冶南方工程技术有限公司 | Lubricating protection control system for powder preparation intermediate-speed mill of blast furnace |
| JP2019103976A (en) * | 2017-12-13 | 2019-06-27 | 古河産機システムズ株式会社 | Crusher, arithmetic device, notification method, and program |
-
2012
- 2012-05-31 CN CN 201220252944 patent/CN202715471U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698861A (en) * | 2012-05-31 | 2012-10-03 | 中冶南方工程技术有限公司 | Lubricating protection control system for powder preparation intermediate-speed mill of blast furnace |
| JP2019103976A (en) * | 2017-12-13 | 2019-06-27 | 古河産機システムズ株式会社 | Crusher, arithmetic device, notification method, and program |
| JP7057114B2 (en) | 2017-12-13 | 2022-04-19 | 古河産機システムズ株式会社 | Crusher, arithmetic unit, notification method and program |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20140531 |