• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SUMMARY The present invention relates to a lubrication system for circulating lubrication of larger applications of machine parts, at heavy load, comprising an oil sump, an oil pump, at least one distribution line for supplying at least one lubrication point with lubricating oil and at least one return line for returning oil to the oil sump. exhibits means to heat the oil. A lubricating oil with a viscosity of at least 10000 cSt at 40 ° C is pumped with the pump from the return line to the lubrication point, the oil being distributed via at least one nozzle directly at said lubrication point at a pressure of at least 125 bar.
    公开号:SE1051340A1
    申请号:SE1051340
    申请日:2010-12-17
    公开日:2012-06-18
    发明作者:Patrik Broman
    申请人:Hydx Ab；
    IPC主号:
    专利说明:

    15 20 25 30 be used. The pumpability of the lubricating oil decreases with increasing viscosity and in the case of lubricating oils with a viscosity exceeding 1000 cSt at 40 ° C, the pumpability is considered to be so low that bath lubrication is used, which means that the machine parts are immersed in an oil bath. For larger applications, however, bath lubrication is not practically applicable.
    SUMMARY OF THE INVENTION The object of the present invention is to provide a circulating lubrication for larger applications of machine parts under heavy load, such as for example in the mining industry, in order thereby to replace the use of grease. The invention also has the advantage of producing an oil spray starting from highly viscous oil by means of very high pressure and heating of the oil. The oil spray effectively reaches even rapidly rotating machine parts. The high viscosity provides efficient lubrication of heavily loaded machine parts.
    According to the present invention, this object is achieved with a lubrication system for circulating lubrication of larger applications of machine parts, under heavy load, comprising an oil sump, at least one distribution line for supplying at least one lubrication point with lubricating oil and at least one return line for returning oil, and an oil pump, the system has means for heating the oil, a lubricating oil having a viscosity of at least 10000 cSt at 40 ° C being pumped from the oil sump via a high pressure type distribution line to the lubrication point, the oil being distributed via at least one nozzle directly at said lubrication point. The pump is in this case a high-pressure pump arranged to give the oil a pressure of 200 bar at a location just before the nozzle is calculated in the flow direction of the oil. After lubrication, the oil is returned via a return line to the pump (self-drain).
    Suitably the lubricating oil has a viscosity of 10,000 to 22,000 cSt at 40 ° C.
    In a preferred embodiment, the lubricating oil has a viscosity of at least 10000 cSt at 40 ° C, at the same time as a pump powerful enough to give the oil a pressure of 200 bar overpressure is arranged in the high pressure type distribution line in the oil flow direction. The inventor has also discovered a previously unrecognized and / or identified problem. The inventor has identified that, partly depending on the speed of movement of the machine parts, problems can arise in that the lubricating oil does not fully reach the tooth surfaces which are intended to be lubricated. After innovative work and tests, a solution to the problem has been identified, namely to provide a high pressure pump with the capacity to provide a strong pressure of the lubricating oil which allows a nozzle under high pressure to spray atomized oil directly on the surfaces to be lubricated.
    The oil from the return line is suitably pumped through a filter before it reaches the nozzle and suitably the oil from the return line is pumped to the distribution pipe with pressurized lubricating oil. Preferably, the temperature in the return line is maintained at about 30-60 ° C and the temperature at the nozzle is also maintained at a temperature of about 50-80 ° C.
    DESCRIPTION OF THE INVENTION DESCRIPTION OF THE DRAWINGS The invention will be described in more detail in the following with reference to the accompanying drawing which, by way of example, shows a preferred embodiment of the invention.
    Fig. 1 shows a schematic view of a gear with a lubrication system according to an embodiment of the present invention.
    DETAILED DESCRIPTION The present invention thus relates to a circulating oil lubrication system for providing a constant flow of lubricating oil of suitable viscosity and pressure to ensure a satisfactory lubrication of a gear unit of a larger plant or machine, e.g. a mill. With reference to Figure 1, the lubrication system comprises an oil sump 4 with an outlet return line 5 and at least one high pressure type distribution pipe 10 for supplying at least one lubrication point with lubricating oil, the oil sump, return line and distribution line having means 6 for heating the oil. A pressure sensor can be arranged in the high-pressure type distribution line to ensure that the correct pressure level, at least 125 bar, is maintained, via control of the pump 7.
    The high-pressure type distribution pipe comprises in its final part closest to the lubrication point a distribution block 12 where the temperature of the lubricating oil is regulated to the correct level before the lubricating oil, via one or more nozzles evenly distributed over the gear width, is sprayed at high pressure towards the gears 1, 2 need for lubrication. The distribution block may also advantageously include flow sensors to indicate the flow of oil to each nozzle. A monitoring unit (not shown) may be set up to sound in the event of a reduced flow.
    After lubrication, the excess is collected in the oil sump 4 and returned by gravity via the oil sump 4 and the return line 5 to the pump 7. The pump can be driven by an electric motor 9 via a gearbox 8. In the return line 5 there can be at least one heater 6 to keep the return oil at a suitable temperature of 30-60 ° C. In the example shown, there are two heaters of 1500 W each, keeping the oil at about 30-60 ° C. There may be additional heaters in the oil sump 4. In the example shown, there are a total of three heaters of 1500W each, which are intended to heat the lubricating oil to about 45 ° C. One in the oil sump, one in the return line, and one in the distribution block 12. In the example shown there is a pump which pumps the heated oil through at least one filter 11 comprising a filter element with for example 25 micrometer filter meshes to filter out any contaminants, after which the lubricating oil is again discharged in the pressure line 10. In the example shown, the system holds 1500 L of lubricating oil, which is filled via the oil sump. A suitable viscosity for the reported example is 16000 cSt at 40 ° C.
    Previously, oil with a viscosity of 1000 cSt at 40 ° C has been considered as maximum viscosity for eg roller bearings and if this quality is heated to 30 ° C, in accordance with the present invention of the system it has become possible to maintain a highly viscous oil quality at a temperature where the oil is still is liquid and does not deteriorate over time. The viscosity will far exceed the viscosity of 2200 cSt at 40 ° C, which was previously considered the upper limit for circulating systems. According to the present invention, the oil flows down via the return line to the pump by means of gravity. By heating the oil to 40-60 ° C and arranging a high-pressure pump with a pump pressure of at least about 150-200 bar overpressure, it is possible to pump a high-viscosity oil quality through the filter and further through the high-pressure distribution line to the lubrication point without the oil cooling in any significant degree and for such a short time that the oil quality does not deteriorate to any great extent.
    The high pressure type distribution line 10, also called the pressure line 10, may be provided with insulation to prevent the oil from cooling and / or reduce the need to install additional heaters in the system. Heaters may be arranged to keep oil within a first temperature range at the pump 7 and when passing through filter 11 and distribution line 10.
    Heaters may be arranged to hold the oil at a second temperature range at the distribution block 12. The second temperature range may be the same or different from the first. The second temperature range may be higher than the first.
    To achieve good lubrication at the lubrication point, atomized oil 13 is sprayed under high pressure directly towards the lubrication point. By identifying the problem and solving it, among other things by choosing a pump with a pump pressure of up to 220 bar overpressure, a system is created that solves the problem initially identified in the present application, ie the distribution of highly viscous oil to a lubrication point with heavily loaded , fast moving machine parts. A pressure of between 125-200 bar should suffice for most applications, where the movement speed of the included machine parts does not exceed 15 m / s.
    权利要求:
    Claims (8)
    [1]
    A lubrication system for circulating lubrication of larger applications of machine parts (1, 2), under heavy load, comprising an oil sump (4), at least one distribution line (10) of high pressure type, at least one distribution block (12) for supplying one or more nozzles with lubricating oil, with the influence of the oil temperature, where the nozzles are arranged to supply at least one lubrication point with lubricating oil and at least one return line (5) for returning oil from the oil sump (4) to the pump, characterized in that the return line (5) has means (6) to heat the oil to a first temperature, and by pumping a lubricating oil with a viscosity of at least 5000 cSt at 40 ° C from the return line (5) to the lubrication point with a high pressure pump (7) arranged in the flow direction from the return line to the distribution line (10) with a pump pressure of 125 bar or higher, and where the oil is sprayed via at least one nozzle directly at said lubrication point.
    [2]
    The lubrication system according to claim 1, characterized in that the lubricating oil has a viscosity of 10000 to 22000 cSt at 40 ° C.
    [3]
    The lubrication system according to claim 2, characterized in that the lubricating oil has a viscosity of at least 11000 cSt at 40 ° C.
    [4]
    The lubrication system according to claim 3, characterized in that the lubricating oil has a viscosity of at least 16000 cSt at 40 ° C.
    [5]
    A lubrication system according to any one of claims 1 to 4, wherein said first temperature is a temperature in the range of 30-60 ° C.
    [6]
    Lubrication system according to claim 5, characterized in that the pump pressure is in the range 125-250 bar.
    [7]
    Lubrication system according to claim 6, characterized in that the oil is pumped through a filter before it is discharged into the nozzle.
    [8]
    The lubrication system according to any one of the preceding claims, wherein the distribution block comprises means for heating the oil to a second temperature, said second temperature being in the range of 50-80 ° C
    类似技术:
    公开号 | 公开日 | 专利标题
    US20130288843A1|2013-10-31|Machine system having a lubrication system
    CN105377445B|2018-03-27|Multi-point sealing part lubricating system
    SE533840C2|2011-02-01|Lubrication system for circulation lubrication of larger applications of machine parts
    DE2606978A1|1976-09-09|LUBRICATION SYSTEM FOR LUBRICATING THE BEARINGS, PREFERABLY A TURBINE
    BR112013029435B1|2021-01-05|laminator cylinder cleaning device and cleaning method
    CN201621256U|2010-11-03|Steel rolling reducer lubricating device
    CN103712045A|2014-04-09|Variable speed stepper motor driving a lubrication pump system
    SE1051340A1|2012-06-18|lubrication
    EP3163086B1|2021-03-24|Pump drive unit for process fluid conveying
    CN103712043A|2014-04-09|Stepper motor driving a lubrication pump providing uninterrupted lubricant flow
    AT13592U1|2014-04-15|System for cooling an electrical device in a fiber web machine
    US20160298609A1|2016-10-13|Emergency lubrication for wind turbine gearboxes
    CH707653B1|2018-02-15|Heavy-duty gear.
    CN204005160U|2014-12-10|A kind of Lubricating-oil Station hydraulic system
    KR20170007410A|2017-01-18|Method and apparatus for producing a cooling lubricant mixture, forming plant for forming semi-finished products and use of a cooling lubricant mixture
    CN101943314A|2011-01-12|Circulating lubricating system for high-speed wire rod production line
    CN108413236A|2018-08-17|The automatic centralized cycle lubricating system of fly press
    WO2012082066A1|2012-06-21|Lubricating system
    AT15555U1|2017-12-15|Hydraulics for a track construction machine with a fluid tank
    WO2018041829A1|2018-03-08|Rotary table bearing lubrication device and method for lubricating a rotary table rolling bearing
    DE102015111860A1|2017-01-26|Oil circuit and method for lubricating and / or cooling a piston internal combustion engine of a motor vehicle
    RU185202U1|2018-11-26|Oil installation
    KR102022636B1|2019-09-18|Apparatus for measuring contamination level of lubricant oil and system for lubricant oil circulation including the same
    CN103016699B|2015-07-01|Installation valve block for gear case of wind turbine generator
    CN103939724A|2014-07-23|Auxiliary oil discharging device of oil return pipe of thin oil station
    同族专利:
    公开号 | 公开日
    SE535344C2|2012-07-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2021-08-03| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1051340A|SE535344C2|2010-12-17|2010-12-17|lubrication|SE1051340A| SE535344C2|2010-12-17|2010-12-17|lubrication|
    SE1150334A| SE535488C2|2010-12-17|2011-04-18|Oil heater for heating of lubricating oil|
    PCT/SE2011/051524| WO2012082066A1|2010-12-17|2011-12-15|Lubricating system|
    [返回顶部]