CN102716787B - Coal mill main bearing lubricating outage protection device - Google Patents
Coal mill main bearing lubricating outage protection device Download PDFInfo
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- CN102716787B CN102716787B CN201210215826.0A CN201210215826A CN102716787B CN 102716787 B CN102716787 B CN 102716787B CN 201210215826 A CN201210215826 A CN 201210215826A CN 102716787 B CN102716787 B CN 102716787B
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- fuel tank
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- overflow pipe
- main bearing
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Abstract
The invention discloses a coal mill main bearing lubricating outage protection device which comprises an overflow pipe, an oil tank, an oil outlet component, a support frame, a spray pipe and a main bearing cap, wherein the oil tank is arranged on the mill main bearing cap through the support frame; the overflow pipe is arranged in the oil tank; the oil outlet component is arranged below the oil tank; the spray pipe is arranged below the oil outlet component; and the spray pipe is inserted into the main bearing cap. According to the invention, the structure is simple, thermo-technical elements and electrical apparatus elements are not needed, the control logic of a mill lubricating system is not increased or modified and the plug-and-play type coal mill lubricating outage protection device is provided.
Description
Technical field
The present invention relates to a kind of power-off protection apparatus, relate in particular to a kind of coal pulverizer main bearing lubrication power-off protection apparatus.
Background technology
Kibbling mill is a kind of low quick mill, its drum speed between 12～28r/min not etc.It is widely used in power plant's grinding coal, for mine grinding ore, is also used for grinding clinker.The cylindrical shell of its rotation is (the seeing accompanying drawing 1) supporting by a pair of large-scale sliding bearing structure.This sliding bearing design adopts its dynamic pressure performance to be lubricated with cooling, be sprayed onto by the top of base bearing structure on the axle journal of rotation by lubricating oil, then under the double action of axle journal rotation and deadweight, be brought into the wedge gap between axle journal and the static bearing shell of rotation, be pressed into effect by oil film wedge and make to form between axle journal and bearing shell certain thickness oil film.If accident power-off, the low-lift pump in petrol station quits work, lubricating oil cut-off, and oil film disappears, and because the huge deadweight of cylindrical shell can make, between axle journal and bearing shell, the friction that simple metal contact occurs, and abrades axle journal forming device permanent damage.
Current alternative measure one: solve this problem by a low-lift pump for subsequent use is set.But, in whole workshop or when factory meets accident power-off, the main motor power-off of grinding machine, but due to the huge rotator inertia of rotary barrel, its stall needs time of 3～10 minutes, and grinder lubricating oil stops, now problem still exists.At this moment, general processing method is exactly to ignore the small probability event of whole workshop or factory's accident power-off, lie over by this problem no matter.
Current alternative measure two: adopt top petrol tank, be equipped with a service tank again outside petrol station, the oil while meeting accident power-off in top petrol tank flows on axle journal under Gravitative Loads, and while normally work, top petrol tank does not participate in lubricating.Because top petrol tank is placed on the height on approximately 10 meters, base bearing top, and each base bearing all additionally increases an oil feed line, and the control system of whole grinding machine also needs to redesign, and design and manufacture cost and working service cost have very large increase.So this measure application is few.
Current alternative measure three: a small-sized fuel tank is set on base bearing, passage, oil level instruction etc. are set on fuel tank, fill oil in starting between grinding machine first by small-sized fuel tank.After power-off, the lubricating oil in small-sized fuel tank relies on deadweight to flow on axle journal.It is chain that this measure will increase control between small-sized fuel tank and petrol station, will revise the start-up routine of grinding machine, it has used many electrical equipments and thermal technology's element, has increased cost simultaneously, larger problem is the reliability that has reduced lubricating system, has destroyed grinding machine and has started the versatility of controlling.
Summary of the invention
Object of the present invention is exactly in order to address the above problem; a kind of coal pulverizer main bearing lubrication power-off protection apparatus is provided, and it is simple in structure, without any thermal technology's element and electric elements; do not increase or revise the control logic of grinding machine lubricating system, the lubricated power-off protection apparatus of coal pulverizer of plug and play type.
To achieve these goals, the present invention adopts following technical scheme:
A kind of coal pulverizer main bearing lubrication power-off protection apparatus, comprises overflow pipe, fuel tank, oil export assembly, bracing frame, spray line, main beating cap, and described fuel tank is arranged on grinder main bearing by bracing frame and covers face; In described fuel tank, there is an overflow pipe; Below described fuel tank, there is an oil export assembly; It below described oil export assembly, is a spray line; Described spray line is inserted into main beating cap inside.
The spray hole position of described spray line is lower than overflow pipe exit position, and spray line has several spray holes, and the internal diameter of overflow pipe is only consistent with the diameter of spray hole, thus the lubricating oil in fuel tank can continue to flow out by spray hole, until stream is empty.
The volume of described fuel tank is designed into the fuel feeding requirement that meets 15 minutes.
Lubricating oil is sent by low-lift pump in petrol station, deliver to respectively through oil circuit on the entrance of two of the kibbling mill device above base bearing, then via the oil-out of device to spray line, by the axle journal of lubricating oil sprinkling.The oil-in of this device is larger than outlet internal diameter, so the oil level of lubricating oil in device fuel tank can slowly raise when grinding machine starts, but still has enough lubricating oil to flow in grinder main bearing by spray line.In the time that the oil level in fuel tank arrives top of oil-tank, due to pressure, lubricating oil can pass through overflow pipe, also flows in base bearing.In the time that grinding machine is normally worked, this device is in fact inoperative.If whole grinding machine accident power-off, grinding mill barrel still rotates, and whole moments of low-lift pump quit work, and lubricating oil stops supplying.At this moment, the oil pressure at this device portal place is poor is zero.But, because the spray hole position of spray line is lower than overflow pipe exit position, the more important thing is spray line 10 spray holes of having an appointment, and the diameter of only with one spray hole of internal diameter of overflow pipe is consistent, so the lubricating oil in fuel tank can continue to flow out by spray hole, until stream is empty.The volume of fuel tank is designed into the fuel feeding requirement that meets 15 minutes.Thereby, in the time of grinding machine accident power-off, can make grinder main bearing continue fuel feeding, axle journal and the bearing shell of protection grinding machine.
Beneficial effect of the present invention: simple in structure, without any thermal technology's element and electric elements, do not increase or revise the control logic of grinding machine lubricating system, the lubricated power-off protection apparatus of coal pulverizer of plug and play type; This device is arranged on grinder main bearing and covers face, thereby has avoided increasing the volume and weight of base bearing casing.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Wherein, 1 overflow pipe, 2 fuel tanks, 3 oil export assemblies, 4 bracing frames, 5 spray lines, 6 main beating cap.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, this device is arranged on above grinder main bearing lid 6.Lubricating oil is sent by low-lift pump in petrol station, deliver to respectively through oil circuit on the oil-in of two of the kibbling mill fuel tank 2 above base bearing, then via the oil-out of fuel tank 2 to spray line 5, lubricating oil is sprayed onto on axle journal.Because the oil-in of fuel tank 2 is larger than outlet internal diameter, so the oil level of lubricating oil in fuel tank 2 can slowly raise when grinding machine starts, but still have enough lubricating oil to flow in grinder main bearing by spray line 5.In the time that the oil level in fuel tank arrives fuel tank 2 top, due to pressure, lubricating oil can pass through overflow pipe 1, also flows in base bearing.In the time that grinding machine is normally worked, this device is in fact inoperative.If whole grinding machine accident power-off, grinding mill barrel still rotates, and whole moments of low-lift pump quit work, and lubricating oil stops supplying.At this moment, fuel tank 2 entrances oil pressure is everywhere poor is zero.But, because the spray hole position of spray line 5 is lower than overflow pipe 1 exit position, the more important thing is spray line 5 10 spray holes of having an appointment, and the diameter of only with one spray hole of internal diameter of overflow pipe 1 is consistent, so the lubricating oil in fuel tank 2 can continue to flow out by spray hole, until stream is empty.The volume of fuel tank 2 is designed into the fuel feeding requirement that meets 15 minutes.Thereby, in the time of grinding machine accident power-off, can make grinder main bearing continue fuel feeding, axle journal and the bearing shell of protection grinding machine.
Meanwhile, due to this device without any thermal technology's element and electrical equipment, do not increase or revise the control logic of grinding machine lubricating system, be a kind of plug and play type device.It is hollow shaft type grinding machine that this device is also applicable to the power transmission shaft such as wet mill and autogenous tumbling mill.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendments that creative work can make or distortion still in protection scope of the present invention.
Claims (1)
1. a coal pulverizer main bearing lubrication power-off protection apparatus, comprises overflow pipe, fuel tank, oil export assembly, bracing frame, spray line, main beating cap, it is characterized in that, described fuel tank is arranged on grinder main bearing by bracing frame and covers face; In described fuel tank, there is an overflow pipe; Below described fuel tank, there is an oil export assembly; It below described oil export assembly, is a spray line; Described spray line is inserted into main beating cap inside, and the spray hole position of described spray line is lower than overflow pipe exit position, and spray line has several spray holes, and the internal diameter of overflow pipe is only consistent with the diameter of spray hole;
Lubricating oil is sent by low-lift pump in petrol station, deliver to respectively through oil circuit on the entrance of two of the kibbling mill device above base bearing, then via the oil-out of device to spray line, by the axle journal of lubricating oil sprinkling; The oil-in of this device is larger than outlet internal diameter, so the oil level of lubricating oil in device fuel tank can slowly raise when grinding machine starts, but still has enough lubricating oil to flow in grinder main bearing by spray line; In the time that the oil level in fuel tank arrives top of oil-tank, due to pressure, lubricating oil can pass through overflow pipe, also flows in base bearing; In the time that grinding machine is normally worked, this device is in fact inoperative; If whole grinding machine accident power-off, grinding mill barrel still rotates, and whole moments of low-lift pump quit work, and lubricating oil stops supplying; At this moment, the oil pressure at this device portal place is poor is zero; But, because the spray hole position of spray line is lower than overflow pipe exit position, the more important thing is that spray line has 10 spray holes, and the diameter of only with one spray hole of internal diameter of overflow pipe is consistent, so the lubricating oil in fuel tank can continue to flow out by spray hole, until stream is empty; The volume of fuel tank is designed into the fuel feeding requirement that meets 15 minutes; In the time of grinding machine accident power-off, can make grinder main bearing continue fuel feeding, axle journal and the bearing shell of protection grinding machine;
Simple in structure, without any thermal technology's element and electric elements, do not increase or revise the control logic of grinding machine lubricating system, plug and play; This device is arranged on grinder main bearing and covers face, avoids increasing the volume and weight of base bearing casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215826.0A CN102716787B (en) | 2012-06-27 | 2012-06-27 | Coal mill main bearing lubricating outage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215826.0A CN102716787B (en) | 2012-06-27 | 2012-06-27 | Coal mill main bearing lubricating outage protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102716787A CN102716787A (en) | 2012-10-10 |
| CN102716787B true CN102716787B (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210215826.0A Active CN102716787B (en) | 2012-06-27 | 2012-06-27 | Coal mill main bearing lubricating outage protection device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2225817A (en) * | 1988-11-09 | 1990-06-13 | Snecma | Lubricating a turbojet engine |
| DE4334339A1 (en) * | 1993-10-08 | 1995-04-13 | Abb Management Ag | Exhaust turbocharger |
| CN1573035A (en) * | 2003-06-03 | 2005-02-02 | 曼·B及W柴油机公开股份有限公司 | Device for emergency lubrcation |
| CN201283302Y (en) * | 2008-10-22 | 2009-08-05 | 攀钢集团冶金工程技术有限公司 | Apparatus for lubricating and cooling main shaft of dry-type ball mill |
| CN201427074Y (en) * | 2009-05-19 | 2010-03-24 | 济南重工股份有限公司 | Mill lubricating high level oil tank |
| CN101718386A (en) * | 2010-03-12 | 2010-06-02 | 济南重工股份有限公司 | Thin oil lubrication device for mill dynamic pressure bearing |
-
2012
- 2012-06-27 CN CN201210215826.0A patent/CN102716787B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2225817A (en) * | 1988-11-09 | 1990-06-13 | Snecma | Lubricating a turbojet engine |
| DE4334339A1 (en) * | 1993-10-08 | 1995-04-13 | Abb Management Ag | Exhaust turbocharger |
| CN1573035A (en) * | 2003-06-03 | 2005-02-02 | 曼·B及W柴油机公开股份有限公司 | Device for emergency lubrcation |
| CN201283302Y (en) * | 2008-10-22 | 2009-08-05 | 攀钢集团冶金工程技术有限公司 | Apparatus for lubricating and cooling main shaft of dry-type ball mill |
| CN201427074Y (en) * | 2009-05-19 | 2010-03-24 | 济南重工股份有限公司 | Mill lubricating high level oil tank |
| CN101718386A (en) * | 2010-03-12 | 2010-06-02 | 济南重工股份有限公司 | Thin oil lubrication device for mill dynamic pressure bearing |
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| CN102716787A (en) | 2012-10-10 |
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Denomination of invention: Lubricating and power-off protection device for coal mill main bearing Effective date of registration: 20230324 Granted publication date: 20141022 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: JINAN HEAVY MACHINERY JOINT-STOCK Co.,Ltd. Registration number: Y2023980035835 |