CN105351716A - Static-pressure sliding shoe bearing lubricating system and method for cement mill - Google Patents
Static-pressure sliding shoe bearing lubricating system and method for cement mill Download PDFInfo
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- CN105351716A CN105351716A CN201510479706.5A CN201510479706A CN105351716A CN 105351716 A CN105351716 A CN 105351716A CN 201510479706 A CN201510479706 A CN 201510479706A CN 105351716 A CN105351716 A CN 105351716A
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- 239000004568 cement Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 9
- 238000005461 lubrication Methods 0.000 claims abstract description 53
- 230000003068 static effect Effects 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000004519 grease Substances 0.000 claims description 74
- 238000012216 screening Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 6
- 239000002828 fuel tank Substances 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 5
- 230000002706 hydrostatic effect Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 231100000719 pollutant Toxicity 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 90
- 239000012530 fluid Substances 0.000 description 7
- 239000004566 building material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention relates to the technical field of cement mill lubrication systems, and discloses a static pressure sliding shoe bearing lubrication system and a method for a cement mill, wherein the static pressure sliding shoe bearing lubrication system is positioned at the feed end and the discharge end of the cement mill, and comprises the following components: the low-pressure system is used for filtering impurities and cooling oil liquid, and the high-pressure system is used for lubricating; the high-pressure system for lubricating is communicated with a low-pressure system for filtering impurities and cooling oil through a sliding shoe bearing; the invention greatly reduces the temperature of the bearing bush, avoids the accident of burning the bearing bush, and reduces the energy consumption: the service life of the pump is prolonged. The service life of the slipper bearing is prolonged, the outage rate of the cement mill is reduced, and the economy is good; and meanwhile, the reliability of the operation of the equipment is improved.
Description
Technical field
The present invention relates to the cement grinding mill lubrication system technical field that building materials field uses, particularly relate to a kind of cement grinding mill static pressure sliding shoe bearing lubrication system and method.
Background technique
Cement grinding mill is widely used in building materials field at present, is the key equipment in cement production process.
Cement grinding mill bearing lubrication system is the critical component of cement grinding mill, directly affects product performance and device security.There is the trend of large scale development in current cement grinding mill, this just requires that cement abrasive tods has higher reliability.And the high reliability of supporting bearing lubrication system is one of important prerequisite ensureing grinding machine high reliability.
Can cement grinding mill run with security and stability, and key is that can bearing normally run.Cement grinding mill generally adopts sliding bearing, the hybrid sliding bearing that the past mainly adopts, and join high low pressure lubrication station, feed end and discharge end bearing respectively join one.
Existing high low pressure lubrication station as shown in Figure 1, due to reasons such as temperature of charge in cement grinding mill are high, dynamic pressure oil film thickness is little, rigidity is little, and the formation of dynamic pressure oil film is subject to the restriction of bearing structure, lubricating oil viscosity and bearing surface linear velocity, common lubrication failure during equipment runs, cause the accident such as Wa Wengao, tile kilning, bearing bush temperature can reach 70-75 DEG C.
Remedial measure common at present has:
1, water spray or the outer trickle of mill in mill;
2, air-cooled crawler shoe;
3, increase the oil cooler quantity of lubrication station or be replaced with the larger oil cooler of film-cooled heat; The air conditioner of the increase repacking also had is arranged in oil feed line;
4, quill shaft is reprocessed to improve the degree of finish of axle journal;
5, increase the bearing area of bearing shell, reduce bearing shell specific pressure to reduce the friction power loss of bearing;
6, the lubricant oil that viscosity is larger is replaced with.
Although these measures achieve certain effect, do not tackle the problem at its root.Because they all do not change the character of the hydrodynamic lubrication of dynamic and hydrostatic bearing.
Summary of the invention
In order to reduce the generation of cement grinding mill bearing bush temperature height and burning accident, the invention provides a kind of cement grinding mill static pressure sliding shoe bearing lubrication system and method, feed end and discharge end bearing respectively join one; It forms simple, and cost is low, safe and effective.
For achieving the above object, the present invention adopts technological scheme as follows:
A kind of cement grinding mill static pressure sliding shoe bearing lubrication system, is positioned at the static pressure sliding shoe bearing lubrication system of cement mill feed end and discharge end, comprises: for the low service system of impurity screening, cooling oil, for the high-pressure system of lubricating; The described high-pressure system for lubricating is communicated with the low service system for impurity screening, cooling oil by slide shoe bearing;
Described low service system to be communicated with clean oil district grease chamber III by one-way valve (8), duplex filter (9), cooler (10) by the low pressure pump (7) being communicated with oil back region grease chamber II and to form;
Described high-pressure system is by the high-pressure service pump (1.1), (1.2) that are communicated with clean oil district grease chamber IV, be communicated with diffluence motor (4) respectively by one-way valve (2.1), (2.2), diffluence motor (4) the other end is communicated with slide shoe bearing (6) by pipeline, and slide shoe bearing (6) the other end is communicated with oil back region grease chamber II by pipeline; The pipeline that one-way valve (2.1), (2.2) are communicated with diffluence motor (4) is provided with pressure controller (3), the pipeline that diffluence motor (4) is communicated with slide shoe bearing (6) is provided with flow dontroller (5).
A kind of cement grinding mill static pressure sliding shoe bearing lubrication system, described fuel tank is made up of 4 grease chambeies, and 4 grease chambeies are oil back region grease chamber I, oil back region grease chamber II, clean oil district grease chamber III and clean oil district grease chamber IV respectively; Be provided with clean oil between described oil back region grease chamber I and oil back region grease chamber II and cross dividing plate, between oil back region grease chamber II and clean oil district grease chamber III, be provided with the dividing plate separated; Between clean oil district grease chamber III and clean oil district grease chamber IV, bottom port is provided with the wallboard separated.
A kind of cement grinding mill static pressure sliding shoe bearing lubrication method, its step is as follows:
1) first start low pressure pump (7), low pressure oil, from oil back region grease chamber II sucking-off, is filtered to duplex filter (9) through low pressure pump (7), one-way valve (8), then gets back to clean oil district grease chamber III through cooler (10) cooling; This low service system is used for impurity screening, cooling oil, oil temperature is dropped to the temperature of work, for high-pressure system;
2) then start high-pressure service pump, high-voltage oil liquid through high-pressure service pump (1.1), (1.2), one-way valve (2.1), (2.2), diffluence motor (4) supply afterwards slide shoe bearing (6) lubrication; High-temperature oil liquid after lubrication flow back into oil back region grease chamber I by deadweight by pipeline by the bottom of grinding machine bearing support, and coarse grained pollutant or water precipitate in oil back region grease chamber I, and clean oil is crossed dividing plate and overflowed to oil back region grease chamber II; And control high-pressure system work by pressure controller (3) that system is arranged, flow dontroller (5), high-pressure system is for ensureing floating of slide shoe bearing;
3) initial operating stage is to the monitoring of the static pressure sliding shoe Lubrication Film Thickness that bearing load often changes; When cement grinding mill load variations, oil slick thickness should be redeterminated; And adjust the alarming value of pressure, flow dontroller; When cement grinding mill is stablized, then shut down mensuration oil slick thickness, and record oil pressure, oily flow valuve at this moment, set up alarming value;
4) during stable operation to the monitoring of static pressure sliding shoe Lubrication Film Thickness, during stable operation, whether the pressure of high-pressure oil feed part, flow normal to answer emphasis to check, whether pressure controller, flow dontroller report to the police, with the situation of change of monitors oil film thickness;
5) rolling inspection of high-pressure service pump, for judging reliability and the life-span of static-pressure lubrication system reliability of operation and high-pressure service pump; And can high-pressure service pump run with security and stability, also will to the inspection of the coaxality that the degree of purity of oil suction, Pump and Electromotor connect;
6) secondary pollution of working medium is prevented, when hydrostatic bearing lubrication system is after installation, debugging efforts complete, it is all clean that whole system comprises lubrication station, pipeline and bearing support, and cement grinding mill scene is the rugged environment of many dust, in equipment running process, the sealing at retainer shaft bearing, fuel tank position, does not allow dust enter lubrication system; Protection and cleaning should be noted, in order to avoid the secondary pollution of lubrication system works medium when changing filter element 1.
Owing to adopting technological scheme as above, the present invention has following superiority:
1, greatly reduce bearing bush temperature, avoid burning accident: adopt static pressure sliding shoe bearing and lubrication system after industrial experiment, bearing bush temperature substantially at 45-50 DEG C, well below before 70-75 DEG C; Avoid burning accident simultaneously.
2, energy consumption is reduced: after adopting static pressure sliding shoe bearing and lubrication system, create certain thickness oil film between slide shoe bearing and quill shaft, decrease friction, reduce energy consumption.
3, high and low press pump is applicable to high viscosity medium: this system works dielectric viscosity is comparatively large, has selected the pump of applicable high viscosity medium, has improve the working life of pump.
4, equipment operation Economy and reliability improve: relative to traditional sliding bearing and high low pressure lubrication station, improve the life-span of high-low pump, improve the life-span of slide shoe bearing, reduce the outage rate of cement grinding mill, good economy performance; Also improve the reliability of equipment operation simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing high low pressure lubrication station;
Fig. 2 is the schematic diagram of high low pressure lubrication station of the present invention.
Embodiment
As shown in Figure 2, a kind of cement grinding mill static pressure sliding shoe bearing lubrication system, is positioned at the static pressure sliding shoe bearing lubrication system of cement mill feed end and discharge end, comprises: for the low service system of impurity screening, cooling oil, for the high-pressure system of lubricating; The described high-pressure system for lubricating is communicated with the low service system for impurity screening, cooling oil by slide shoe bearing;
Described low service system to be communicated with clean oil district grease chamber III by one-way valve (8), duplex filter (9), cooler (10) by the low pressure pump (7) being communicated with oil back region grease chamber II and to form;
Described high-pressure system is by the high-pressure service pump (1.1), (1.2) that are communicated with clean oil district grease chamber IV, be communicated with diffluence motor (4) respectively by one-way valve (2.1), (2.2), diffluence motor (4) the other end is communicated with slide shoe bearing (6) by pipeline, and slide shoe bearing (6) the other end is communicated with oil back region grease chamber II by pipeline; The pipeline that one-way valve (2.1), (2.2) are communicated with diffluence motor (4) is provided with pressure controller (3), the pipeline that diffluence motor (4) is communicated with slide shoe bearing (6) is provided with flow dontroller (5).
Described fuel tank is made up of 4 grease chambeies, and 4 grease chambeies are oil back region grease chamber I, oil back region grease chamber II, clean oil district grease chamber III and clean oil district grease chamber IV respectively; Be provided with clean oil between described oil back region grease chamber I and oil back region grease chamber II and cross dividing plate, between oil back region grease chamber II and clean oil district grease chamber III, be provided with the dividing plate separated; Between clean oil district grease chamber III and clean oil district grease chamber IV, bottom port is provided with the wallboard separated.
Under normal circumstances, first start low pressure pump, low pressure oil is from oil back region grease chamber II sucking-off, and through low pressure pump (7), one-way valve (8), duplex filter (9), cooler (10), then gets back to clean oil district grease chamber III.Low service system no longer bears lubrication, and its function is impurity screening, cooling oil, and oil temperature is dropped to suitable operating temperature.
Then start high-pressure service pump, fluid is through high-pressure service pump (1.1), (1.2) one-way valve (2.1), (2.2), and diffluence motor (4) supplies slide shoe bearing (6) afterwards; System is provided with pressure controller (3), flow dontroller (5).High-pressure system works always, ensures that slide shoe bearing floats certain height.
For the new feature of static pressure sliding shoe bearing, oil slick thickness change, high-pressure service pump operation should be noted emphatically, prevent the aspects such as working medium pollution, note following 4 points:
1, the monitoring cement grinding mill initial operating stage of initial operating stage slide shoe bearing oil slick thickness, bearing load often changes, and when the load, should redeterminate oil slick thickness; And suitably adjust the alarming value of pressure, flow dontroller.When cement grinding mill is stablized, then shut down mensuration oil slick thickness, and record oil pressure, oily flow valuve at this moment, set up alarming value.
2, the monitoring of slide shoe bearing oil slick thickness during stable operation, during stable operation, whether the pressure of high-pressure oil feed part, flow be normal to answer emphasis to check, whether pressure controller, flow dontroller report to the police, with the situation of change of monitors oil film thickness.
3, the rolling inspection of high-pressure service pump, the reliability of static-pressure lubrication system, is decided by reliability and the life-span of high-pressure service pump.And can high-pressure service pump run with security and stability, depend on the degree of purity of oil suction to a great extent.The coaxality that pump is connected with motor in addition also should meet the requirements.
4, prevent the secondary pollution of working medium, hydrostatic bearing lubrication system is after installation, debugging efforts complete, and it is all clean that whole system comprises lubrication station, pipeline and bearing support.And cement grinding mill scene is the rugged environment of many dust, in equipment running process, the sealing of attention system, do not allow dust enter system, answer emphasis to note the position such as bearing support, fuel tank; Protection and cleaning should be noted, in order to avoid the secondary pollution of system works medium when changing filter element and other elements.
Should note in concrete enforcement following some:
1, first start low service system, after low pressure is normal, start high-pressure system.
2, high pressure, low pressure pump are the using and the reserved.Switching mode should adopt and first start stand by pump, then stops the mode having fail operation pump, uninterrupted to ensure the fluid supply of cement grinding mill static pressure sliding shoe bearing oil pocket.
3, high-pressure system is provided with highi degree of accuracy diffluence motor, ensures that the flow of supply two bearing shells is consistent.
4, low service system is provided with duplex filter, can switch online, more renew cartridge; Be provided with differential pressure transmitter device simultaneously, send alarm signal when filter core blocks, prompting changing filter core.
5, pressure relay is set in high pressure, low service system, for monitor force, provides stand by pump switching controls point to control system.
6, flow dontroller being set in high-pressure system, for monitoring flow, providing stand by pump switching controls point to control system.
Namely fluid mobility status is: the fluid bottom cement mill bearing support flow back into oil back region grease chamber I by deadweight by pipeline, and coarse grained pollutant or water precipitate in oil back region grease chamber I, and clean oil is crossed dividing plate and overflowed to oil back region grease chamber II.Low pressure pump is pumped from oil back region grease chamber II, filtered, cool after enter bottom clean oil district grease chamber III, the foam in grease chamber of clean oil district III fluid will be discharged.Separate with dividing plate between oil back region grease chamber II and clean oil district grease chamber III.Separate with the wallboard of bottom port between clean oil district grease chamber III and clean oil district grease chamber IV.
High-pressure service pump extracts clean fluid to main bearing lubrication from clean oil district grease chamber IV, because low pressure pump flow is always greater than the flow of high-pressure service pump 1.1,1.2, therefore flow to the fluid of clean oil district grease chamber III always more than the oil mass flowed out from clean oil district grease chamber IV, the cleansing oil hydrorrhea had more flows back to oil back region grease chamber II and again circulates.
Claims (3)
1. a cement grinding mill static pressure sliding shoe bearing lubrication system, is characterized in that: the static pressure sliding shoe bearing lubrication system being positioned at cement mill feed end and discharge end, comprising: for the low service system of impurity screening, cooling oil, for the high-pressure system of lubricating; The described high-pressure system for lubricating is communicated with the low service system for impurity screening, cooling oil by slide shoe bearing;
Described low service system to be communicated with clean oil district grease chamber III by one-way valve (8), duplex filter (9), cooler (10) by the low pressure pump (7) being communicated with oil back region grease chamber II and to form;
Described high-pressure system is by the high-pressure service pump (1.1), (1.2) that are communicated with clean oil district grease chamber IV, be communicated with diffluence motor (4) respectively by one-way valve (2.1), (2.2), diffluence motor (4) the other end is communicated with slide shoe bearing (6) by pipeline, and slide shoe bearing (6) the other end is communicated with oil back region grease chamber II by pipeline; The pipeline that one-way valve (2.1), (2.2) are communicated with diffluence motor (4) is provided with pressure controller (3), the pipeline that diffluence motor (4) is communicated with slide shoe bearing (6) is provided with flow dontroller (5).
2. a kind of cement grinding mill static pressure sliding shoe bearing lubrication system according to claim 1, is characterized in that: described fuel tank is made up of 4 grease chambeies, and 4 grease chambeies are oil back region grease chamber I, oil back region grease chamber II, clean oil district grease chamber III and clean oil district grease chamber IV respectively; Be provided with clean oil between described oil back region grease chamber I and oil back region grease chamber II and cross dividing plate, between oil back region grease chamber II and clean oil district grease chamber III, be provided with the dividing plate separated; Between clean oil district grease chamber III and clean oil district grease chamber IV, bottom port is provided with the wallboard separated.
3. a kind of cement grinding mill static pressure sliding shoe bearing lubrication method of cement grinding mill static pressure sliding shoe bearing lubrication system as claimed in claim 1, is characterized in that: its step is as follows:
1) first start low pressure pump (7), low pressure oil, from oil back region grease chamber II sucking-off, is filtered to duplex filter (9) through low pressure pump (7), one-way valve (8), then gets back to clean oil district grease chamber III through cooler (10) cooling; This low service system is used for impurity screening, cooling oil, oil temperature is dropped to the temperature of work, for high-pressure system;
2) then start high-pressure service pump, high-voltage oil liquid through high-pressure service pump (1.1), (1.2), one-way valve (2.1), (2.2), diffluence motor (4) supply afterwards slide shoe bearing (6) lubrication; High-temperature oil liquid after lubrication flow back into oil back region grease chamber I by deadweight by pipeline by the bottom of grinding machine bearing support, and coarse grained pollutant or water precipitate in oil back region grease chamber I, and clean oil is crossed dividing plate and overflowed to oil back region grease chamber II; And control high-pressure system work by pressure controller (3) that system is arranged, flow dontroller (5), high-pressure system is for ensureing floating of slide shoe bearing;
3) initial operating stage is to the monitoring of the static pressure sliding shoe Lubrication Film Thickness that bearing load often changes; When cement grinding mill load variations, oil slick thickness should be redeterminated; And adjust the alarming value of pressure, flow dontroller; When cement grinding mill is stablized, then shut down mensuration oil slick thickness, and record oil pressure, oily flow valuve at this moment, set up alarming value;
4) during stable operation to the monitoring of static pressure sliding shoe Lubrication Film Thickness, during stable operation, whether the pressure of high-pressure oil feed part, flow normal to answer emphasis to check, whether pressure controller, flow dontroller report to the police, with the situation of change of monitors oil film thickness;
5) rolling inspection of high-pressure service pump, for judging reliability and the life-span of static-pressure lubrication system reliability of operation and high-pressure service pump; And can high-pressure service pump run with security and stability, also will to the inspection of the coaxality that the degree of purity of oil suction, Pump and Electromotor connect;
6) secondary pollution of working medium is prevented, when hydrostatic bearing lubrication system is after installation, debugging efforts complete, it is all clean that whole system comprises lubrication station, pipeline and bearing support, and cement grinding mill scene is the rugged environment of many dust, in equipment running process, the sealing at retainer shaft bearing, fuel tank position, does not allow dust enter lubrication system; Protection and cleaning should be noted, in order to avoid the secondary pollution of lubrication system works medium when changing filter element 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510479706.5A CN105351716A (en) | 2015-08-07 | 2015-08-07 | Static-pressure sliding shoe bearing lubricating system and method for cement mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510479706.5A CN105351716A (en) | 2015-08-07 | 2015-08-07 | Static-pressure sliding shoe bearing lubricating system and method for cement mill |
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| CN105351716A true CN105351716A (en) | 2016-02-24 |
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| CN201510479706.5A Pending CN105351716A (en) | 2015-08-07 | 2015-08-07 | Static-pressure sliding shoe bearing lubricating system and method for cement mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115307294A (en) * | 2022-07-29 | 2022-11-08 | 青岛海尔空调器有限总公司 | Air conditioning unit and oil return control method thereof |
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2015
- 2015-08-07 CN CN201510479706.5A patent/CN105351716A/en active Pending
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Application publication date: 20160224 |