WO2017057611A1 - Filter unit and lubrication oil circulation system - Google Patents

Filter unit and lubrication oil circulation system Download PDF

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Publication number
WO2017057611A1
WO2017057611A1 PCT/JP2016/078885 JP2016078885W WO2017057611A1 WO 2017057611 A1 WO2017057611 A1 WO 2017057611A1 JP 2016078885 W JP2016078885 W JP 2016078885W WO 2017057611 A1 WO2017057611 A1 WO 2017057611A1
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WO
WIPO (PCT)
Prior art keywords
lubricating oil
filter unit
filter
additive
circulation system
Prior art date
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PCT/JP2016/078885
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French (fr)
Japanese (ja)
Inventor
直史 置塩
八木下　和宏
岳史 伊藤
Original Assignee
Ｊｘエネルギー株式会社
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Priority to JP2017543581A priority Critical patent/JPWO2017057611A1/en
Publication of WO2017057611A1 publication Critical patent/WO2017057611A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/02—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00 having means for introducing additives to lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
    • F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration

Definitions

  • the present invention relates to a filter unit and a lubricating oil circulation system.
  • Lubricating oil has been used to improve the lubricity between members.
  • Lubricating oil is supplied through a filter, for example, from a circulation system provided in the mechanical device, and is used after being circulated in the mechanical device.
  • a lubricating oil contains a base oil and various additives that are added according to desired properties (see Patent Documents 1-3).
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a filter unit and a lubricating oil circulation system that can extend the life of the lubricating oil.
  • a filter unit includes a filter that removes impurities contained in the lubricating oil, and a supply unit that supplies an additive to the lubricating oil.
  • the supply unit may be a filter in which an additive is held. Since the filter itself functions as a supply unit, it is not necessary to provide a separate structure for the supply unit.
  • the supply unit may include a storage unit that stores the additive. Since the container provided separately from the filter functions as a supply unit, it is not necessary to perform a special process for holding the additive in the filter.
  • the lubricating oil circulation system includes a flow path through which the lubricating oil flows and the filter unit provided in the flow path.
  • the life of the lubricating oil can be extended.
  • FIG. 1 is a schematic diagram illustrating one embodiment of a circulation system.
  • FIG. 2 is a schematic diagram illustrating an example of a specific embodiment of the filter unit.
  • FIG. 3 is a schematic cross-sectional view showing an example of a specific embodiment of the filter unit.
  • FIG. 4 is a schematic view showing a rust prevention effect duration evaluation test facility.
  • FIG. 1 is a schematic diagram showing an embodiment of a circulation system.
  • the circulation system 1 includes a lubricated part 3, a filter unit installation part 5 and a filter unit 10.
  • the circulation system 1 is incorporated in a mechanical device such as a hydraulic machine such as a hydraulic excavator, a compression machine, a turbine, an engine, an (automatic) transmission, and a differential gear.
  • the to-be-lubricated part 3 is connected to the filter unit installation part 5 via the first flow path 7 and the second flow path 9 through which the lubricating oil flows.
  • the filter unit installation section 5 is provided with a filter unit 10. The detailed configuration of the filter unit 10 will be described later.
  • the lubricated part 3 supplies lubricating oil to the filter unit installation part 5 via the first flow path 7. Further, the lubricated oil in a state where impurities are removed by the filter unit 10 is supplied to the lubricated part 3 from the filter unit installation part 5 through the second flow path 9.
  • the portion to be lubricated 3 is a portion that requires lubricity in the mechanical device, and examples thereof include a portion in which parts such as a gear, a bearing, a pump, and a piston ring come into contact with each other and slide. Examples of actual mechanical devices include an engine, a gear box, a compressor, and a hydraulic unit.
  • the lubricating oil supplied from the filter unit installation part 5 to the lubricated part 3 lubricates the lubricated part 3 and then returns to the filter unit installation part 5.
  • the lubricating oil is used by circulating between the lubricated part 3 and the filter unit installation part 5.
  • the structure of a circulation system is not restricted to the above-mentioned structure.
  • the lubricated part 3 supplies the lubricating oil to the filter unit installation part 5 via the second flow path 9, and the lubricating oil is supplied from the filter unit installation part 5 via the first flow path 7. Also good.
  • Lubricating oil contains a lubricating base oil such as mineral oil or synthetic oil, and one or more additives as required.
  • additives are not particularly limited as long as they are generally used as additives for lubricating oils.
  • metal detergents, ashless dispersants, extreme pressure agents, antiwear agents, antioxidants, corrosion inhibitors examples include agents, rust inhibitors, demulsifiers, metal deactivators, friction modifiers, viscosity index improvers, pour point depressants, and the like. From the viewpoint of obtaining a lubricating oil having an excellent long life, among the above additives, an antioxidant, a metal deactivator, a rust preventive agent, and the like may be added to the lubricating oil.
  • the antioxidant is not particularly limited as long as it is generally used as an antioxidant added to the lubricating oil.
  • examples of the antioxidant include phenolic antioxidants such as hindered phenol, and amine antioxidants such as alkylated diphenylamine.
  • the rust inhibitor is not particularly limited as long as it is generally used as a rust inhibitor added to the lubricating oil.
  • the rust preventive agent include esters or partial esters of alkenyl succinic acid, aliphatic amines, organic sulfonic acid metal salts, organic phosphoric acid metal salts, alkyl succinic acid esters, succinimides, sarcosine acid derivatives, alkylphenyls. Examples include fatty acids and polyhydric alcohol esters.
  • FIG. 2 and FIG. 3 show only one example of the filter unit, and do not show all the specific structures of the present invention.
  • FIG. 2A and 2B are schematic views showing an example of a specific embodiment of the filter unit 10 shown in FIG.
  • the left half from the center shows an external view of the filter unit
  • the right half from the center shows a cross-sectional view of the filter unit.
  • FIG.2 (b) shows the IIb sectional drawing in Fig.2 (a).
  • the filter unit in the present embodiment has a hollow cylindrical shape, a filter 13 that removes impurities contained in the lubricating oil, a lid 11 that covers the upper end of the filter 13, and a filter 13. And a bottom plate portion 14 covering the lower end of the bottom plate.
  • the words “upper” and “lower” are used, but the posture of the filter unit 10 during use is not particularly limited.
  • the filter 13 is folded in a bellows shape, for example, and is configured so as to form a hollow cylindrical shape as a whole.
  • a support member 12 having punch holes is provided on the hollow side of the filter 13.
  • the filter unit 10 the lubricating oil outflow region R o corresponding to the hollow region formed by the support member 12 is formed.
  • the cover part 11 is formed in disk shape, and the through-hole is formed in the center part.
  • the lid 11 is fixed to the upper end so as to cover the opening on the upper end side of the cylindrical filter 13 and the support member 12.
  • the through hole of the lid portion 11 communicates with the lubricating oil outflow region Ro .
  • the first flow path 7 (see FIG. 1) is attached to the through hole of the lid portion 11.
  • the bottom plate portion 14 is formed in a disc shape, and is fixed to the lower end so as to cover the opening on the lower end side of the cylindrical filter 13 and the support member 12.
  • a through hole is not formed in the bottom plate portion 14, and the opening on the lower end side of the filter 13 and the support member 12 is sealed.
  • the lubricating oil flows into the lubricating oil outflow region Ro in the filter unit 10 from the through hole of the lid portion 11.
  • the lubricating oil that has flowed into the lubricant outflow region R o is from the lubricating oil outlet region R o through punch holes in the support member 12 is supplied to the filter 13, is discharged to the outside of the filter unit 10 through the filter 13 .
  • the lubricating oil that has flowed out of the filter unit 10 passes through a flow path formed between the filter unit 10 and the peripheral wall portion of the filter unit installation portion 5 and flows toward the second flow path 9 (see FIG. 1). ).
  • the filter 13 is not particularly limited.
  • paper or cotton mainly containing cellulose or the like; synthetic fiber mainly containing polypropylene or nylon; iron, aluminum, stainless steel, or the like as a main component.
  • Metal mesh glass fiber; glass fiber reinforced nylon and the like can be used.
  • the filter 13 holding the additive corresponds to the additive supply unit 15 that supplies the additive to the lubricating oil.
  • the filter 13 itself can be regarded as the additive supply unit 15 that supplies the additive to the lubricating oil.
  • the filter unit 10 having a simple configuration called the filter 13 is provided.
  • the additive is eluted by the lubricating oil that has passed through the filter 13, and the additive is supplied into the lubricating oil.
  • the lubricating oil additive may be held in the filter 13 in various states such as liquid, solid, and capsule.
  • a method for holding the additive in the filter 13 a method in which the filter 13 is impregnated with the additive and the additive is included in the filter 13, and the additive is supported on a carrier such as alumina and adsorbed on the surface of the filter 13. Methods and the like.
  • the supply amount of the additive supplied into the lubricating oil can be controlled, for example, by adjusting the amount of the additive held by the filter 13 according to the type of the additive. For example, when the antioxidant is held in the filter 13, if the amine-based antioxidant such as alkylated diphenylamine is used, the supply amount of the amine-based antioxidant is the lubrication used in the circulation system including the lubricated part.
  • 0.001 mass part or more may be sufficient with respect to 100 mass parts of oil base oil, 0.01 mass part or more may be sufficient, 0.1 mass part or more may be sufficient, and 10.0 It may be not more than part by mass, may be not more than 5.0 parts by mass, and may be not more than 1.0 part by mass.
  • the antioxidant is a phenolic antioxidant such as hindered phenol
  • the amount of the phenolic antioxidant supplied is 100 parts by mass of the lubricating base oil used in the circulation system including the lubricated part. On the other hand, it may be 0.001 parts by mass or more, 0.01 parts by mass or more, 0.1 parts by mass or more, or 10.0 parts by mass or less. Or 5.0 parts by mass or less, or 1.0 parts by mass or less.
  • the supply amount of the rust preventive agent is 0.001 part by mass or more with respect to 100 parts by mass of the lubricating base oil used in the circulation system including the lubricated part. May be 0.01 parts by weight or more, 0.1 parts by weight or more, 10.0 parts by weight or less, 5.0 parts by weight or less It may be 1.0 parts by mass or less.
  • the elution amount of the additive supplied into the lubricating oil can be controlled to a predetermined amount by appropriately selecting the flow rate of the lubricating oil flowing through the circulation system 1 or the method for retaining the additive.
  • the additive gradually elutes to the extent that it does not fall below the lower limit of the content of each additive that should be contained in the lubricating oil. You may make it continue. That is, immediately after the replacement of the filter unit 10, almost the whole amount of the additives such as the antioxidant and the rust inhibitor retained in the filter 13 does not elute, but the antioxidant and the rust inhibitor with the passage of time. Such additives may be gradually eluted. Thereby, even if the additive is consumed as the lubricant is used, a predetermined amount of the desired additive can be continuously supplied to the lubricant in the circulation system 1.
  • the filter unit may be replaced at a desired timing.
  • the timing for replacing the filter unit according to the present embodiment may be appropriately determined by those skilled in the art from the viewpoint of preventing the content of impurities (contaminants) contained in the lubricating oil from increasing with use of the circulation system. For example, it can be carried out every 10 to 5000 hours or every 1000 to 2000 hours.
  • the content of impurities contained in the lubricating oil is 10 mg or less on the basis of 100 mL of lubricating oil from the viewpoint that the desired characteristics of the lubricating oil are fully exhibited and the life of the mechanical device is sufficiently guaranteed. Also good.
  • the impurities contained in the lubricating oil refer to impurities that are insoluble in the lubricating oil that are generated in the lubricating oil when the circulation system is used.
  • impurities derived from machinery for example, wear powder and burrs.
  • impurities derived from lubricating oil for example, deteriorated products derived from additives, deteriorated products derived from lubricating oil, and the like.
  • a method for measuring impurities contained in the lubricating oil a method usually performed by those skilled in the art can be used as appropriate. For example, a method for measuring hydraulic oil contamination by a JIS B9931 mass method can be mentioned.
  • the additive when the lubricating oil passes through the filter unit, the additive is supplied into the lubricating oil from the supply unit of the filter unit.
  • the additive is periodically supplied into the lubricating oil by a simple operation of replacing the filter unit. Therefore, when the additive is consumed, maintenance for supplying the additive at a timing separate from the replacement of the filter unit 10 and complicated maintenance such as periodic replacement of the lubricating oil are not required. That is, since the replacement of the filter unit 10 is periodically performed at a frequency higher than the replacement of the lubricating oil, the number of maintenance can be increased by supplying the additive simultaneously with the replacement of the filter unit 10.
  • a supply unit for supplying the additive to the lubricating oil is constituted by the filter 13 holding the additive. Since the filter itself functions as a supply unit, it is not necessary to provide a separate structure for the supply unit.
  • FIG. 3 is a schematic cross-sectional view showing an example of another specific embodiment of the filter unit 10 shown in FIG.
  • the filter unit 10 in FIGS. 3A and 3B is provided with a filter 13 and an additive supply unit 15 for supplying an additive separately.
  • the additive supply unit 15 includes an additive storage unit 16 that stores the additive, and the additive storage unit 16 stores the additive.
  • Additive supply unit 15 is present in the lubricating oil outlet region R o of the filter unit 10, for example, may be arranged in a manner floating in the lubricant outflow region R o (FIGS.
  • Additives contained in the additive receptacle 16 is eluted from the additive supply unit 15 to the lubricating oil outflow region R o by the circulation of the lubricating oil supplied to the lubricating oil. Thereby, an additive can be provided in the filter unit 10 by a simpler method.
  • the additive container 16 may be disposed in the lubricating oil and dissolved to supply the internal additive to the lubricating oil, and the internal additive may be provided by providing fine through holes on the wall surface. May be supplied to the lubricating oil. Further, as shown in FIG.
  • the filter unit 10 in the present embodiment accommodates the additive by the lubricating oil outflow region Ro itself formed by the filter 13 (or the support member as shown in FIG. 2).
  • An additive storage unit 16 may be configured. According to the above configuration, the additive storage unit 16 provided separately from the filter 13 functions as the additive supply unit 15, and thus it is necessary to perform a special process for holding the additive in the filter 13. Disappear.
  • the shape of the filter 13 is not particularly limited.
  • the filter 13 may be folded in a bellows shape and may not be configured to form a hollow cylindrical shape as a whole, or may be configured in a simple cylindrical shape. Further, the filter 13 may be stacked in a plurality of layers in the radial direction. Further, for example, as shown in FIG. 3D, the filter 13 may have a planar configuration.
  • ⁇ Preparation of lubricating oil composition> A lubricating oil composition having the composition shown in Table 1 was prepared using the lubricating base oil and additives shown below. Each numerical value shown in Table 1 indicates a part by mass.
  • Base oil 1 hydrorefined base oil (kinematic viscosity at 40 ° C .: 46 mm 2 / s, viscosity index: 130)
  • Base oil 2 hydrorefined base oil (kinematic viscosity at 40 ° C .: 32 mm 2 / s, viscosity index: 130)
  • Antioxidant component Amine-based antioxidants: Alkylated diphenylamine (manufactured by BASF, trade name: IRGANOX L57) Phenolic antioxidants: Hindered phenol (ditertiary butyl paracresol) (Rust inhibitor component) Alkenyl succinic acid half ester (trade name: IRGACOR L12, manufactured by BASF) (Antiwear component) Tricresyl phosphate
  • ⁇ Fabrication of filter unit> (Preparation of filter unit containing antioxidant)
  • the filter used for the filter unit was manufactured by Taisei Kogyo Co., Ltd., trade name: UL-06A-10U-EV, and a filter unit having a filter containing an antioxidant was produced using an impregnation supporting method. After the obtained filter unit was extracted with hexane, the content of the antioxidant contained in the filter was measured by liquid chromatography for the amine-based antioxidant and the gas chromatography measuring method for the phenol-based antioxidant.
  • the amine-based antioxidant component was 0.15 parts by mass and the phenol-based antioxidant component was 0.45 parts by mass with respect to 100 parts by mass of the lubricating base oil used in the circulation system.
  • the filter used for the filter unit was manufactured by Taisei Kogyo Co., Ltd., trade name: UL-06A-10U-EV, and a filter unit having a filter containing a rust preventive was produced using an impregnation supporting method. After extracting the obtained filter unit with hexane, the content of the rust inhibitor contained in the filter was measured by a liquid chromatography measurement method.
  • the rust inhibitor was 0.1 part by mass with respect to 100 parts by mass of the lubricating base oil used in the circulation system.
  • the deterioration evaluation test of the lubricating oil by the circulation system was performed in accordance with the A2F pump test of JCMAS P045. Specifically, using a hydraulic circuit in which a filter unit and a slant shaft type piston pump are installed, 13 L of lubricating oil composition 1 or 2 is placed in an oil tank, a Cu coil is placed as a catalyst, and a flow rate of 1.0 L / h While blowing the air and keeping the oil tank oil temperature at 80 ⁇ 5 ° C., rotate the pump at 1500 rpm to circulate the lubricating oil until the amount of contaminants in the lubricating oil exceeds 10 mg / 100 mL. By measuring the time, deterioration of the lubricating oil was evaluated.
  • the rust prevention effect continuous evaluation test of the lubricating oil by the circulation system was carried out by performing a rust prevention test based on the artificial seawater test of JIS K2510 using the rust prevention effect continuous evaluation test equipment 20 shown in FIG. Specifically, using a circuit in which the filter unit 21, the gear pump 22, the flow meter 23, and the cooler 24 are installed, 42L of the lubricating oil composition 3 or 4 is placed in the oil tank 25, and a Cu coil is placed as a catalyst.
  • the pump While blowing air at a flow rate of h and keeping the oil tank oil temperature at 95 ° C ⁇ 5 ° C, the pump is operated to circulate the lubricating oil to a discharge pressure of 10 ⁇ 1 MPa, and oil is collected every 2000 hours to rust.
  • the duration of the rust prevention effect of the lubricating oil was evaluated by conducting a stop test and measuring the time until it was judged as “rust”.
  • Example 1 to 3 and Comparative Examples 1 to 2 In Examples 1 to 3 and Comparative Examples 1 to 2, the filter unit was replaced in the replacement cycle shown in Table 2 using the lubricating oil composition shown in Table 2 below. A deterioration evaluation test was conducted. In addition, the filter unit at the time of the start of an evaluation test used the filter unit which does not contain antioxidant component in any Example and comparative example, and performed replacement
  • “A” indicates that the filter unit has a filter containing an antioxidant
  • Example 4 to 6 and Comparative Examples 3 to 4 the lubricating oil composition shown in Table 3 below was used, and the filter unit was replaced in the replacement cycle shown in Table 3. Rust prevention effect duration evaluation test was conducted.
  • the filter unit at the time of an evaluation test start used the filter unit which does not contain a rust preventive agent component in any Example and comparative example, and performed replacement
  • “A” indicates that the filter unit has a filter containing a rust inhibitor
  • “B” indicates that the filter unit has a filter unit that does not contain a rust inhibitor. To do.
  • Comparative Examples 3 and 4 even if the concentration of the rust inhibitor in the lubricating oil composition is doubled, the rust preventive effect duration of the lubricating oil is doubled. It has been shown that it cannot be done. That is, by supplying a rust inhibitor into the lubricating oil using the filter unit according to the present invention, the lubricating oil composition can be effectively applied rather than adding the same amount of the rust inhibitor in advance to the lubricating oil composition. It can be seen that the antirust effect can be sustained.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Details Of Gearings (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The present invention provides the following: a filter unit comprising a filter for removing impurities contained in a lubrication oil, and a supply unit for supplying an additive to the lubrication oil; and a lubrication oil circulation system comprising a channel through which the lubrication oil flows, and the filter unit which is provided in the channel.

Description

フィルタユニット及び潤滑油の循環システムFilter unit and lubricating oil circulation system
　本発明は、フィルタユニット及び潤滑油の循環システムに関する。 The present invention relates to a filter unit and a lubricating oil circulation system.
　従来、産業機械等の機械装置においては、部材間の潤滑性を向上させるために潤滑油が用いられている。潤滑油は、例えば機械装置内に設けられた循環システムからフィルタを介して供給され、機械装置内を循環して使用される。一般に、潤滑油は、基油と、所望の特性に応じて添加される種々の添加剤とを含有している（特許文献１－３参照）。 Conventionally, in mechanical devices such as industrial machines, lubricating oil has been used to improve the lubricity between members. Lubricating oil is supplied through a filter, for example, from a circulation system provided in the mechanical device, and is used after being circulated in the mechanical device. Generally, a lubricating oil contains a base oil and various additives that are added according to desired properties (see Patent Documents 1-3).
英国特許１４１５９６４号公報GB 1415964 特開２０１０－２６０９７２号公報JP 2010-260972 A 特開２００２－２６５９７１号公報JP 2002-265971 A
　近年の産業機械の高速化・高圧化・小型化に伴い、機械装置がより過酷な条件下で運転されるようになっている。そのため、これらの機械装置に使用する潤滑油には、機械寿命を充分に保証するために長寿命化を図ることが求められている。 With the recent increase in speed, pressure, and miniaturization of industrial machinery, mechanical devices are operated under more severe conditions. Therefore, the lubricating oil used in these mechanical devices is required to have a long life in order to sufficiently ensure the mechanical life.
　本発明は、上記課題を解決するためになされたものであり、潤滑油の長寿命化を図ることができるフィルタユニット、及び潤滑油の循環システムを提供することを目的とする。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a filter unit and a lubricating oil circulation system that can extend the life of the lubricating oil.
　上記課題解決のため、本発明に係るフィルタユニットは、潤滑油に含まれる不純物を除去するフィルタと、潤滑油に添加剤を供給する供給部と、を備える。 In order to solve the above problems, a filter unit according to the present invention includes a filter that removes impurities contained in the lubricating oil, and a supply unit that supplies an additive to the lubricating oil.
　このようなフィルタユニットを用いることにより、潤滑油がフィルタユニットを通る際に、フィルタユニットの供給部から潤滑油中に添加剤が供給される。これにより、潤滑油の長寿命化を図ることができる。 By using such a filter unit, when the lubricating oil passes through the filter unit, the additive is supplied into the lubricating oil from the supply unit of the filter unit. As a result, the life of the lubricating oil can be extended.
　供給部は、添加剤が保持されているフィルタであってもよい。フィルタ自体が供給部として機能するため、供給部のための別途の構造を設ける必要がなくなる。 The supply unit may be a filter in which an additive is held. Since the filter itself functions as a supply unit, it is not necessary to provide a separate structure for the supply unit.
　供給部は、添加剤を収容する収容部を備えていてもよい。フィルタとは別途設けられた収容部が供給部として機能するため、フィルタに添加剤を保持させるための特別な処理を行う必要がなくなる。 The supply unit may include a storage unit that stores the additive. Since the container provided separately from the filter functions as a supply unit, it is not necessary to perform a special process for holding the additive in the filter.
　本発明に係る潤滑油の循環システムは、潤滑油が流通する流路と、流路に設けられた上記フィルタユニットとを備える。 The lubricating oil circulation system according to the present invention includes a flow path through which the lubricating oil flows and the filter unit provided in the flow path.
　このような潤滑油の循環システムによれば、上記フィルタユニットと同様の作用・効果を得ることができる。 ¡According to such a lubricating oil circulation system, the same operation and effect as the above filter unit can be obtained.
　本発明によれば、潤滑油の長寿命化を図ることができる。 According to the present invention, the life of the lubricating oil can be extended.
図１は、循環システムの一実施形態を示す概略図である。FIG. 1 is a schematic diagram illustrating one embodiment of a circulation system. 図２は、フィルタユニットの具体的な実施形態の一例を示す模式図である。FIG. 2 is a schematic diagram illustrating an example of a specific embodiment of the filter unit. 図３は、フィルタユニットの具体的な実施形態の一例を示す模式断面図である。FIG. 3 is a schematic cross-sectional view showing an example of a specific embodiment of the filter unit. 図４は、防錆効果持続評価試験設備を示す概略図である。FIG. 4 is a schematic view showing a rust prevention effect duration evaluation test facility.
　以下、図面を参照しながら、本発明に係る循環システム及びフィルタユニットの好適な実施形態について詳細に説明する。なお、図面の説明において同一の要素には同一の符号を付し、重複する説明を省略する。 Hereinafter, preferred embodiments of a circulation system and a filter unit according to the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.
　図１は、循環システムの一実施形態を示す概略図である。図１に示すように、循環システム１は、被潤滑部３と、フィルタユニット設置部５と、フィルタユニット１０と、を備える。循環システム１は、例えば、油圧ショベル等の油圧機械、圧縮機械、タービン、エンジン、（自動）変速機、デファレンシャルギヤなどの機械装置に組み込まれている。被潤滑部３は、潤滑油が流通する第１の流路７及び第２の流路９を介してフィルタユニット設置部５に接続されている。フィルタユニット設置部５には、フィルタユニット１０が設けられている。フィルタユニット１０の詳細な構成は、後述する。 FIG. 1 is a schematic diagram showing an embodiment of a circulation system. As shown in FIG. 1, the circulation system 1 includes a lubricated part 3, a filter unit installation part 5 and a filter unit 10. The circulation system 1 is incorporated in a mechanical device such as a hydraulic machine such as a hydraulic excavator, a compression machine, a turbine, an engine, an (automatic) transmission, and a differential gear. The to-be-lubricated part 3 is connected to the filter unit installation part 5 via the first flow path 7 and the second flow path 9 through which the lubricating oil flows. The filter unit installation section 5 is provided with a filter unit 10. The detailed configuration of the filter unit 10 will be described later.
　なお、図１に示す例においては、被潤滑部３は、第１の流路７を介してフィルタユニット設置部５に潤滑油を供給する。また、被潤滑部３は、第２の流路９を介してフィルタユニット設置部５より、フィルタユニット１０にて不純物を除去された状態の潤滑油が供給される。被潤滑部３は、機械装置のうち潤滑性が必要とされる部分であり、例えば、ギア、軸受、ポンプ、ピストンリング等の部品同士が接触して摺動する部分が挙げられる。実際の機械装置としては、エンジン、ギヤボックス、コンプレッサー、油圧ユニット等が挙げられる。フィルタユニット設置部５から被潤滑部３に供給された潤滑油は、被潤滑部３を潤滑した後、フィルタユニット設置部５へ戻る。このように、潤滑油は、被潤滑部３とフィルタユニット設置部５との間を循環して使用される。なお、循環システムの構成は、上述の構成に限られない。例えば、被潤滑部３は、第２の流路９を介してフィルタユニット設置部５に潤滑油を供給し、第１の流路７を介してフィルタユニット設置部５より潤滑油が供給されてもよい。 In the example shown in FIG. 1, the lubricated part 3 supplies lubricating oil to the filter unit installation part 5 via the first flow path 7. Further, the lubricated oil in a state where impurities are removed by the filter unit 10 is supplied to the lubricated part 3 from the filter unit installation part 5 through the second flow path 9. The portion to be lubricated 3 is a portion that requires lubricity in the mechanical device, and examples thereof include a portion in which parts such as a gear, a bearing, a pump, and a piston ring come into contact with each other and slide. Examples of actual mechanical devices include an engine, a gear box, a compressor, and a hydraulic unit. The lubricating oil supplied from the filter unit installation part 5 to the lubricated part 3 lubricates the lubricated part 3 and then returns to the filter unit installation part 5. Thus, the lubricating oil is used by circulating between the lubricated part 3 and the filter unit installation part 5. In addition, the structure of a circulation system is not restricted to the above-mentioned structure. For example, the lubricated part 3 supplies the lubricating oil to the filter unit installation part 5 via the second flow path 9, and the lubricating oil is supplied from the filter unit installation part 5 via the first flow path 7. Also good.
　潤滑油には、鉱油、合成油等の潤滑油基油と、必要に応じて一種又は二種以上の添加剤とが添加されている。かかる添加剤は、潤滑油用添加剤として一般に用いられているものであれば特に制限はなく、例えば、金属系清浄剤、無灰分散剤、極圧剤、摩耗防止剤、酸化防止剤、腐食防止剤、防錆剤、抗乳化剤、金属不活性化剤、摩擦調整剤、粘度指数向上剤、流動点降下剤等が例示される。優れた長寿命性を有する潤滑油を得る観点から、潤滑油には、上記の添加剤のうち、酸化防止剤、金属不活性化剤、防錆剤等が添加されていてもよい。 Lubricating oil contains a lubricating base oil such as mineral oil or synthetic oil, and one or more additives as required. Such additives are not particularly limited as long as they are generally used as additives for lubricating oils. For example, metal detergents, ashless dispersants, extreme pressure agents, antiwear agents, antioxidants, corrosion inhibitors Examples include agents, rust inhibitors, demulsifiers, metal deactivators, friction modifiers, viscosity index improvers, pour point depressants, and the like. From the viewpoint of obtaining a lubricating oil having an excellent long life, among the above additives, an antioxidant, a metal deactivator, a rust preventive agent, and the like may be added to the lubricating oil.
　酸化防止剤は、潤滑油に添加される酸化防止剤として一般に用いられているものであれば特に制限はない。酸化防止剤としては、例えば、ヒンダードフェノール等のフェノール系酸化防止剤、アルキル化ジフェニルアミン等のアミン系酸化防止剤などが挙げられる。 The antioxidant is not particularly limited as long as it is generally used as an antioxidant added to the lubricating oil. Examples of the antioxidant include phenolic antioxidants such as hindered phenol, and amine antioxidants such as alkylated diphenylamine.
　防錆剤は、潤滑油に添加される防錆剤として一般に用いられているものであれば特に制限はない。防錆剤としては、例えば、アルケニルコハク酸のエステル又は部分エステル、脂肪族アミン類、有機スルホン酸金属塩、有機リン酸金属塩、アルキルコハク酸エステル、コハク酸イミド類、サルコシン酸誘導体、アルキルフェニル脂肪酸類、多価アルコールエステル類などが挙げられる。 The rust inhibitor is not particularly limited as long as it is generally used as a rust inhibitor added to the lubricating oil. Examples of the rust preventive agent include esters or partial esters of alkenyl succinic acid, aliphatic amines, organic sulfonic acid metal salts, organic phosphoric acid metal salts, alkyl succinic acid esters, succinimides, sarcosine acid derivatives, alkylphenyls. Examples include fatty acids and polyhydric alcohol esters.
　以下では、図１に示した循環システム１におけるフィルタユニット１０の構成について、図２及び図３を参照してより詳細に説明する。ただし、図２及び図３は、フィルタユニットの単なる一例を示しているにすぎず、本発明のすべての具体的構造を示すわけではない。 Hereinafter, the configuration of the filter unit 10 in the circulation system 1 shown in FIG. 1 will be described in more detail with reference to FIGS. However, FIG. 2 and FIG. 3 show only one example of the filter unit, and do not show all the specific structures of the present invention.
　図２（ａ）及び（ｂ）は、図１に示したフィルタユニット１０の具体的な実施形態の一例を示す模式図である。図２（ａ）において、中心より左半分はフィルタユニットの外形図を示し、中心より右半分はフィルタユニットの断面図を示す。図２（ｂ）は、図２（ａ）におけるＩＩｂ断面図を示す。図２に示すように、本実施形態におけるフィルタユニットは、中空の円筒状をなしており、潤滑油に含まれる不純物を除去するフィルタ１３と、フィルタ１３の上端を覆う蓋部１１と、フィルタ１３の下端を覆う底板部１４と、を備えている。なお、本実施形態では、説明の便宜上、「上」「下」の語を用いているが、使用時におけるフィルタユニット１０の姿勢は特に限定されない。 2A and 2B are schematic views showing an example of a specific embodiment of the filter unit 10 shown in FIG. In FIG. 2A, the left half from the center shows an external view of the filter unit, and the right half from the center shows a cross-sectional view of the filter unit. FIG.2 (b) shows the IIb sectional drawing in Fig.2 (a). As shown in FIG. 2, the filter unit in the present embodiment has a hollow cylindrical shape, a filter 13 that removes impurities contained in the lubricating oil, a lid 11 that covers the upper end of the filter 13, and a filter 13. And a bottom plate portion 14 covering the lower end of the bottom plate. In this embodiment, for convenience of explanation, the words “upper” and “lower” are used, but the posture of the filter unit 10 during use is not particularly limited.
　フィルタ１３は、例えば蛇腹状に折り畳まれており、全体として中空の円筒状をなすように構成されている。また、フィルタ１３の中空側にはパンチ穴が形成された支持部材１２が設けられている。これによりフィルタユニット１０には、支持部材１２によって形成される中空領域に対応する潤滑油流出領域Ｒｏが形成される。なお、蓋部１１は、円板状に形成されており、中心部には貫通孔が形成されている。蓋部１１は、円筒状のフィルタ１３及び支持部材１２の上端側の開口部を覆うように、当該上端に固定される。蓋部１１の貫通孔は、潤滑油流出領域Ｒｏに連通している。蓋部１１の貫通孔には、第１の流路７（図１参照）が取り付けられる。底板部１４は、円板状に形成されており、円筒状のフィルタ１３及び支持部材１２の下端側の開口部を覆うように、当該下端に固定される。底板部１４には貫通孔が形成されておらず、フィルタ１３及び支持部材１２の下端側の開口部を封止している。 The filter 13 is folded in a bellows shape, for example, and is configured so as to form a hollow cylindrical shape as a whole. A support member 12 having punch holes is provided on the hollow side of the filter 13. Thus the filter unit 10, the lubricating oil outflow region R o corresponding to the hollow region formed by the support member 12 is formed. In addition, the cover part 11 is formed in disk shape, and the through-hole is formed in the center part. The lid 11 is fixed to the upper end so as to cover the opening on the upper end side of the cylindrical filter 13 and the support member 12. The through hole of the lid portion 11 communicates with the lubricating oil outflow region Ro . The first flow path 7 (see FIG. 1) is attached to the through hole of the lid portion 11. The bottom plate portion 14 is formed in a disc shape, and is fixed to the lower end so as to cover the opening on the lower end side of the cylindrical filter 13 and the support member 12. A through hole is not formed in the bottom plate portion 14, and the opening on the lower end side of the filter 13 and the support member 12 is sealed.
　潤滑油は、例えば、蓋部１１の貫通孔よりフィルタユニット１０における潤滑油流出領域Ｒｏに流入される。潤滑油流出領域Ｒｏに流入した潤滑油は、潤滑油流出領域Ｒｏから支持部材１２におけるパンチ穴を通ってフィルタ１３に供給され、フィルタ１３を通ってフィルタユニット１０の外部へと流出される。フィルタユニット１０の外部へ流出した潤滑油は、フィルタユニット１０とフィルタユニット設置部５の周壁部との間に形成された流路を通過し、第２の流路９側へ流れる（図１参照）。 For example, the lubricating oil flows into the lubricating oil outflow region Ro in the filter unit 10 from the through hole of the lid portion 11. The lubricating oil that has flowed into the lubricant outflow region R o is from the lubricating oil outlet region R o through punch holes in the support member 12 is supplied to the filter 13, is discharged to the outside of the filter unit 10 through the filter 13 . The lubricating oil that has flowed out of the filter unit 10 passes through a flow path formed between the filter unit 10 and the peripheral wall portion of the filter unit installation portion 5 and flows toward the second flow path 9 (see FIG. 1). ).
　フィルタ１３は、特に制限されるものではないが、例えば、セルロース等を主成分とする紙又はコットン；ポリプロピレン、ナイロン等を主成分とする合成繊維；鉄、アルミ、ステンレス鋼等を主成分とする金属メッシュ；ガラス繊維；ガラス繊維強化ナイロンなどを使用することができる。 The filter 13 is not particularly limited. For example, paper or cotton mainly containing cellulose or the like; synthetic fiber mainly containing polypropylene or nylon; iron, aluminum, stainless steel, or the like as a main component. Metal mesh; glass fiber; glass fiber reinforced nylon and the like can be used.
　図２におけるフィルタユニット１０においては、フィルタ１３に添加剤が保持されている。この場合、添加剤が保持されているフィルタ１３が、潤滑油に添加剤を供給する添加剤供給部１５に相当する。このため、フィルタ１３自体が潤滑油に添加剤を供給する添加剤供給部１５とみなすことができる。この場合、フィルタ１３という簡易な構成を有するフィルタユニット１０が提供される。 In the filter unit 10 in FIG. 2, an additive is held in the filter 13. In this case, the filter 13 holding the additive corresponds to the additive supply unit 15 that supplies the additive to the lubricating oil. For this reason, the filter 13 itself can be regarded as the additive supply unit 15 that supplies the additive to the lubricating oil. In this case, the filter unit 10 having a simple configuration called the filter 13 is provided.
　図２におけるフィルタユニット１０を用いた場合、フィルタ１３を通った潤滑油によって添加剤が溶出され、潤滑油内に添加剤が供給される。フィルタ１３に保持される添加剤としては、上述した潤滑油用添加剤の全部又は一部を用いることができる。潤滑油用添加剤は、液体状、固体状、カプセル状といった種々の状態でフィルタ１３に保持されていてよい。フィルタ１３に添加剤を保持させる方法としては、フィルタ１３を添加剤に含浸させてフィルタ１３内部に添加剤を含ませる方法、添加剤をアルミナ等の担体に担持させてフィルタ１３の表面に吸着させる方法等が挙げられる。 When the filter unit 10 in FIG. 2 is used, the additive is eluted by the lubricating oil that has passed through the filter 13, and the additive is supplied into the lubricating oil. As the additive retained in the filter 13, all or part of the above-described additive for lubricating oil can be used. The lubricating oil additive may be held in the filter 13 in various states such as liquid, solid, and capsule. As a method for holding the additive in the filter 13, a method in which the filter 13 is impregnated with the additive and the additive is included in the filter 13, and the additive is supported on a carrier such as alumina and adsorbed on the surface of the filter 13. Methods and the like.
　潤滑油内に供給される添加剤の供給量は、例えば、添加剤の種類に応じて適宜フィルタ１３に保持させる添加剤の量を調整することにより、制御することができる。例えば酸化防止剤をフィルタ１３に保持させる場合、アルキル化ジフェニルアミン等のアミン系酸化防止剤であれば、当該アミン系酸化防止剤の供給量は、被潤滑部を備える循環システムで使用されている潤滑油基油１００質量部に対し、０．００１質量部以上であってもよく、０．０１質量部以上であってもよく、０．１質量部以上であってもよく、また、１０．０質量部以下であってもよく、５．０質量部以下であってもよく、１．０質量部以下であってもよい。また、酸化防止剤がヒンダードフェノール等のフェノール系酸化防止剤であれば、当該フェノール系酸化防止剤の供給量は、被潤滑部を備える循環システムで使用されている潤滑油基油１００質量部に対し、０．００１質量部以上であってもよく、０．０１質量部以上であってもよく、０．１質量部以上であってもよく、また、１０．０質量部以下であってもよく、５．０質量部以下であってもよく、１．０質量部以下であってもよい。 The supply amount of the additive supplied into the lubricating oil can be controlled, for example, by adjusting the amount of the additive held by the filter 13 according to the type of the additive. For example, when the antioxidant is held in the filter 13, if the amine-based antioxidant such as alkylated diphenylamine is used, the supply amount of the amine-based antioxidant is the lubrication used in the circulation system including the lubricated part. 0.001 mass part or more may be sufficient with respect to 100 mass parts of oil base oil, 0.01 mass part or more may be sufficient, 0.1 mass part or more may be sufficient, and 10.0 It may be not more than part by mass, may be not more than 5.0 parts by mass, and may be not more than 1.0 part by mass. In addition, when the antioxidant is a phenolic antioxidant such as hindered phenol, the amount of the phenolic antioxidant supplied is 100 parts by mass of the lubricating base oil used in the circulation system including the lubricated part. On the other hand, it may be 0.001 parts by mass or more, 0.01 parts by mass or more, 0.1 parts by mass or more, or 10.0 parts by mass or less. Or 5.0 parts by mass or less, or 1.0 parts by mass or less.
　また、例えば防錆剤をフィルタ１３に保持させる場合、当該防錆剤の供給量は、被潤滑部を備える循環システムで使用される潤滑油基油１００質量部に対し、０．００１質量部以上であってもよく、０．０１質量部以上であってもよく、０．１質量部以上であってもよく、また、１０．０質量部以下であってもよく、５．０質量部以下であってもよく、１．０質量部以下であってもよい。 For example, when holding a rust preventive agent in the filter 13, the supply amount of the rust preventive agent is 0.001 part by mass or more with respect to 100 parts by mass of the lubricating base oil used in the circulation system including the lubricated part. May be 0.01 parts by weight or more, 0.1 parts by weight or more, 10.0 parts by weight or less, 5.0 parts by weight or less It may be 1.0 parts by mass or less.
　潤滑油内に供給される添加剤の溶出量は、循環システム１を流れる潤滑油の流速又は上述した添加剤を保持させる方法を適宜選択することによって所定量に制御することができる。また、優れた長寿命性を有する潤滑油を、安定的に供給するという観点から、添加剤が、潤滑油に含まれるべき各添加剤の含有量の下限値を下回らない程度に徐々に溶出し続けるようにしてもよい。すなわち、フィルタユニット１０の交換直後に、フィルタ１３に保持された酸化防止剤や防錆剤等の添加剤の略全量が溶出するのではなく、時間の経過に伴って酸化防止剤や防錆剤等の添加剤が徐々に溶出し続けるようにしてもよい。これにより、潤滑油の使用に伴って添加剤が消耗しても、循環システム１中の潤滑油に所望の添加剤を所定量供給し続けることができる。 The elution amount of the additive supplied into the lubricating oil can be controlled to a predetermined amount by appropriately selecting the flow rate of the lubricating oil flowing through the circulation system 1 or the method for retaining the additive. In addition, from the viewpoint of stably supplying a lubricating oil having an excellent long life, the additive gradually elutes to the extent that it does not fall below the lower limit of the content of each additive that should be contained in the lubricating oil. You may make it continue. That is, immediately after the replacement of the filter unit 10, almost the whole amount of the additives such as the antioxidant and the rust inhibitor retained in the filter 13 does not elute, but the antioxidant and the rust inhibitor with the passage of time. Such additives may be gradually eluted. Thereby, even if the additive is consumed as the lubricant is used, a predetermined amount of the desired additive can be continuously supplied to the lubricant in the circulation system 1.
　なお、本実施形態に係る循環システムにおいては、所望のタイミングでフィルタユニットを交換してもよい。本実施形態に係るフィルタユニットを交換するタイミングは、循環システムの使用に伴って潤滑油に含まれる不純物（夾雑物）の含有量が上昇することを防止する観点から、当業者が適宜行うことができるが、例えば１０～５０００時間ごと、又は１０００～２０００時間ごとに行うことができる。また、潤滑油に含まれる不純物の含有量は、潤滑油の所望の特性が充分に発揮される観点、及び機械装置の寿命を充分に保証する観点から、潤滑油１００ｍＬ基準で１０ｍｇ以下であってもよい。なお、潤滑油に含まれる不純物とは、循環システムの使用に伴って潤滑油中に発生する、潤滑油に不溶な夾雑物をいい、機械装置由来の不純物（例えば摩耗粉、バリ等）の他、潤滑油由来の不純物（例えば添加剤由来の劣化物、潤滑油由来の劣化物等）などが挙げられる。潤滑油に含まれる不純物を測定する方法は、当業者が通常行う手法を適宜用いることができるが、例えば、ＪＩＳ　Ｂ９９３１　質量法による作動油汚染の測定方法が挙げられる。 In the circulation system according to this embodiment, the filter unit may be replaced at a desired timing. The timing for replacing the filter unit according to the present embodiment may be appropriately determined by those skilled in the art from the viewpoint of preventing the content of impurities (contaminants) contained in the lubricating oil from increasing with use of the circulation system. For example, it can be carried out every 10 to 5000 hours or every 1000 to 2000 hours. In addition, the content of impurities contained in the lubricating oil is 10 mg or less on the basis of 100 mL of lubricating oil from the viewpoint that the desired characteristics of the lubricating oil are fully exhibited and the life of the mechanical device is sufficiently guaranteed. Also good. The impurities contained in the lubricating oil refer to impurities that are insoluble in the lubricating oil that are generated in the lubricating oil when the circulation system is used. In addition to impurities derived from machinery (for example, wear powder and burrs). And impurities derived from lubricating oil (for example, deteriorated products derived from additives, deteriorated products derived from lubricating oil, and the like). As a method for measuring impurities contained in the lubricating oil, a method usually performed by those skilled in the art can be used as appropriate. For example, a method for measuring hydraulic oil contamination by a JIS B9931 mass method can be mentioned.
　従来、潤滑油に長寿命性を持たせるためには、例えば潤滑油に添加される種々の添加剤の初期値を高めることが考えられる。しかし、潤滑油中の添加剤の含有量は潤滑油の使用とともに消耗するため、上記初期値を例えば２倍に高めたとしても、必ずしも寿命が倍増するわけではない。したがって、機械トラブルを未然に防ぐには潤滑油を定期的に交換する必要がある。他方、潤滑油に添加される種々の添加剤の初期値を高めることで、潤滑油の使用に伴って添加剤が沈殿したり、機械装置の部材に捕捉されたりするという問題が生じ、潤滑油の所望の特性が充分に発揮されないおそれがある。 Conventionally, in order to give the lubricating oil a long life, for example, it is conceivable to increase the initial values of various additives added to the lubricating oil. However, since the content of the additive in the lubricating oil is consumed with the use of the lubricating oil, even if the initial value is increased by a factor of two, for example, the lifetime is not necessarily doubled. Therefore, it is necessary to replace the lubricating oil periodically in order to prevent machine troubles. On the other hand, by increasing the initial value of various additives added to the lubricating oil, there arises a problem that the additive precipitates with the use of the lubricating oil or is trapped in the mechanical device member. There is a risk that the desired characteristics of the above will not be sufficiently exhibited.
　これに対し、上述したように、本実施形態に係る循環システム１及びフィルタユニット１０によれば、潤滑油がフィルタユニットを通る際に、フィルタユニットの供給部から潤滑油中に添加剤が供給される。さらに、フィルタユニットの交換という簡便な操作によって定期的に添加剤が潤滑油中に供給される。そのため、添加剤の消耗に伴って、フィルタユニット１０の交換とは別途のタイミングで添加剤を供給するメンテナンス、潤滑油を定期的に交換する等の複雑なメンテナンスなどを必要としない。すなわち、フィルタユニット１０の交換は潤滑油の交換よりも高い頻度で定期的に行われるものであるため、当該フィルタユニット１０の交換と同時に添加剤の供給も行うことで、メンテナンスの回数を増やすことなく、容易に潤滑油の長寿命化を図ることができる。したがって、潤滑油に添加される添加剤の初期値を高めることなく、長期間にわたって機械寿命を充分に保証するための優れた長寿命性を有する潤滑油を、容易に且つ安定的に供給することができる。また、潤滑油の長寿命化を図ることによって、潤滑油の交換を行うことなく（すなわち、潤滑油の寿命が機械寿命よりも長い）機械装置を用いることが可能となる場合もある。 On the other hand, as described above, according to the circulation system 1 and the filter unit 10 according to the present embodiment, when the lubricating oil passes through the filter unit, the additive is supplied into the lubricating oil from the supply unit of the filter unit. The Further, the additive is periodically supplied into the lubricating oil by a simple operation of replacing the filter unit. Therefore, when the additive is consumed, maintenance for supplying the additive at a timing separate from the replacement of the filter unit 10 and complicated maintenance such as periodic replacement of the lubricating oil are not required. That is, since the replacement of the filter unit 10 is periodically performed at a frequency higher than the replacement of the lubricating oil, the number of maintenance can be increased by supplying the additive simultaneously with the replacement of the filter unit 10. Therefore, it is possible to easily extend the life of the lubricating oil. Therefore, without increasing the initial value of the additive added to the lubricating oil, it is possible to easily and stably supply a lubricating oil having an excellent long life for sufficiently guaranteeing the mechanical life over a long period of time. Can do. Further, by prolonging the life of the lubricating oil, it may be possible to use the mechanical device without exchanging the lubricating oil (that is, the life of the lubricating oil is longer than the mechanical life).
　また、添加剤が保持されているフィルタ１３によって、潤滑油に添加剤を供給する供給部が構成されている。フィルタ自体が供給部として機能するため、供給部のための別途の構造を設ける必要がなくなる。 Further, a supply unit for supplying the additive to the lubricating oil is constituted by the filter 13 holding the additive. Since the filter itself functions as a supply unit, it is not necessary to provide a separate structure for the supply unit.
　以上、本発明に係るフィルタユニット１０の実施形態を示す一例を説明したが、本発明に係るフィルタユニット１０は、上述した構成を有するものに限られるものではない。例えば、図３は、図１に示したフィルタユニット１０の他の具体的な実施形態の一例を示す模式断面図である。図３（ａ）及び（ｂ）におけるフィルタユニット１０は、フィルタ１３と添加剤を供給する添加剤供給部１５とが別体に設けられている。該添加剤供給部１５は、添加剤を収容する添加剤収容部１６を備え、添加剤収容部１６に添加剤が収容される。添加剤供給部１５は、フィルタユニット１０の潤滑油流出領域Ｒｏ内に存在しており、例えば、潤滑油流出領域Ｒｏ内に浮遊する態様で配置されていてもよく（図３（ａ））、底板部１４上に配置されていてもよい（図３（ｂ））。添加剤収容部１６に収容されている添加剤は、潤滑油の循環によって添加剤供給部１５から潤滑油流出領域Ｒｏに溶出され、潤滑油中に供給される。これにより、より簡便な方法によって添加剤をフィルタユニット１０に設けることができる。なお、添加剤収容部１６は、潤滑油内に配置されて溶解することによって、内部の添加剤を潤滑油に供給してもよく、壁面に微細な貫通孔を設ける等によって、内部の添加剤を潤滑油に供給してもよい。また、本実施形態におけるフィルタユニット１０は、図３（ｃ）に示すように、フィルタ１３（又は図２のような支持部材）によって形成される潤滑油流出領域Ｒｏ自体によって、添加剤を収容する添加剤収容部１６が構成されてよい。以上のような構成によれば、フィルタ１３とは別途設けられた添加剤収容部１６が添加剤供給部１５として機能するため、フィルタ１３に添加剤を保持させるための特別な処理を行う必要がなくなる。 As mentioned above, although the example which shows embodiment of the filter unit 10 which concerns on this invention was demonstrated, the filter unit 10 which concerns on this invention is not restricted to what has the structure mentioned above. For example, FIG. 3 is a schematic cross-sectional view showing an example of another specific embodiment of the filter unit 10 shown in FIG. The filter unit 10 in FIGS. 3A and 3B is provided with a filter 13 and an additive supply unit 15 for supplying an additive separately. The additive supply unit 15 includes an additive storage unit 16 that stores the additive, and the additive storage unit 16 stores the additive. Additive supply unit 15 is present in the lubricating oil outlet region R o of the filter unit 10, for example, may be arranged in a manner floating in the lubricant outflow region R o (FIGS. 3 (a) ), And may be disposed on the bottom plate portion 14 (FIG. 3B). Additives contained in the additive receptacle 16 is eluted from the additive supply unit 15 to the lubricating oil outflow region R o by the circulation of the lubricating oil supplied to the lubricating oil. Thereby, an additive can be provided in the filter unit 10 by a simpler method. The additive container 16 may be disposed in the lubricating oil and dissolved to supply the internal additive to the lubricating oil, and the internal additive may be provided by providing fine through holes on the wall surface. May be supplied to the lubricating oil. Further, as shown in FIG. 3C, the filter unit 10 in the present embodiment accommodates the additive by the lubricating oil outflow region Ro itself formed by the filter 13 (or the support member as shown in FIG. 2). An additive storage unit 16 may be configured. According to the above configuration, the additive storage unit 16 provided separately from the filter 13 functions as the additive supply unit 15, and thus it is necessary to perform a special process for holding the additive in the filter 13. Disappear.
　また、フィルタ１３の形状も特に限定されない。フィルタ１３は、蛇腹状に折り畳まれ、全体として中空の円筒状をなすように構成されていなくともよく、単なる円筒状に構成されていてもよい。また、フィルタ１３が径方向に複数層に重ねられてもよい。また、例えば、図３（ｄ）に示すように、フィルタ１３は、平面状の構成を有していてもよい。 Further, the shape of the filter 13 is not particularly limited. The filter 13 may be folded in a bellows shape and may not be configured to form a hollow cylindrical shape as a whole, or may be configured in a simple cylindrical shape. Further, the filter 13 may be stacked in a plurality of layers in the radial direction. Further, for example, as shown in FIG. 3D, the filter 13 may have a planar configuration.
　以下、実施例及び比較例を示して本発明を具体的に説明する。ただし、本発明は以下の実施例に限定されるものではない。 Hereinafter, the present invention will be described in detail with reference to examples and comparative examples. However, the present invention is not limited to the following examples.
＜潤滑油組成物の調製＞
　それぞれ以下に示す潤滑油基油及び添加剤を用いて表１に示す組成を有する潤滑油組成物を調製した。表１に示す各数値は、質量部を示す。 <Preparation of lubricating oil composition>
A lubricating oil composition having the composition shown in Table 1 was prepared using the lubricating base oil and additives shown below. Each numerical value shown in Table 1 indicates a part by mass.
［潤滑油基油］
　基油１：水素化精製基油（４０℃における動粘度：４６ｍｍ２／ｓ、粘度指数：１３０）
　基油２：水素化精製基油（４０℃における動粘度：３２ｍｍ２／ｓ、粘度指数：１３０） [Lubricant base oil]
Base oil 1: hydrorefined base oil (kinematic viscosity at 40 ° C .: 46 mm 2 / s, viscosity index: 130)
Base oil 2: hydrorefined base oil (kinematic viscosity at 40 ° C .: 32 mm 2 / s, viscosity index: 130)
［添加剤］
（酸化防止剤成分）
　アミン系酸化防止剤：
　アルキル化ジフェニルアミン（ＢＡＳＦ社製、商品名：ＩＲＧＡＮＯＸ　Ｌ５７）
　フェノール系酸化防止剤：
　ヒンダードフェノール（ジターシャリーブチルパラクレゾール）
（防錆剤成分）
　アルケニルコハク酸ハーフエステル（ＢＡＳＦ社製、商品名：ＩＲＧＡＣＯＲ　Ｌ１２）
（摩耗防止剤成分）
　トリクレジルフォスフェート [Additive]
(Antioxidant component)
Amine-based antioxidants:
Alkylated diphenylamine (manufactured by BASF, trade name: IRGANOX L57)
Phenolic antioxidants:
Hindered phenol (ditertiary butyl paracresol)
(Rust inhibitor component)
Alkenyl succinic acid half ester (trade name: IRGACOR L12, manufactured by BASF)
(Antiwear component)
Tricresyl phosphate
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
＜フィルタユニットの作製＞
（酸化防止剤を含有するフィルタユニットの作製）
　フィルタユニットに用いるフィルタは、大生工業製、商品名：ＵＬ－０６Ａ－１０Ｕ－ＥＶを用い、含浸担持の方法を用いて酸化防止剤を含有するフィルタを有するフィルタユニットを作製した。得られたフィルタユニットをヘキサンで抽出したのち、アミン系酸化防止剤は液体クロマトグラフィーにて、フェノール系酸化防止剤はガスクロマトグラフィー測定方法によりフィルタに含まれる酸化防止剤の含有量を測定した。循環システムに使用される潤滑油基油１００質量部に対して、アミン系酸化防止剤成分が０．１５質量部、フェノール系酸化防止剤成分が０．４５質量部であった。 <Fabrication of filter unit>
(Preparation of filter unit containing antioxidant)
The filter used for the filter unit was manufactured by Taisei Kogyo Co., Ltd., trade name: UL-06A-10U-EV, and a filter unit having a filter containing an antioxidant was produced using an impregnation supporting method. After the obtained filter unit was extracted with hexane, the content of the antioxidant contained in the filter was measured by liquid chromatography for the amine-based antioxidant and the gas chromatography measuring method for the phenol-based antioxidant. The amine-based antioxidant component was 0.15 parts by mass and the phenol-based antioxidant component was 0.45 parts by mass with respect to 100 parts by mass of the lubricating base oil used in the circulation system.
（防錆剤を含有するフィルタユニットの作製）
　フィルタユニットに用いるフィルタは、大生工業製、商品名：ＵＬ－０６Ａ－１０Ｕ－ＥＶを用い、含浸担持の方法を用いて防錆剤を含有するフィルタを有するフィルタユニットを作製した。得られたフィルタユニットをヘキサンで抽出したのち、液体クロマトグラフィー測定方法によりフィルタに含まれる防錆剤の含有量を測定した。循環システムに使用される潤滑油基油１００質量部に対して、防錆剤が０．１質量部であった。 (Preparation of filter unit containing rust inhibitor)
The filter used for the filter unit was manufactured by Taisei Kogyo Co., Ltd., trade name: UL-06A-10U-EV, and a filter unit having a filter containing a rust preventive was produced using an impregnation supporting method. After extracting the obtained filter unit with hexane, the content of the rust inhibitor contained in the filter was measured by a liquid chromatography measurement method. The rust inhibitor was 0.1 part by mass with respect to 100 parts by mass of the lubricating base oil used in the circulation system.
＜循環システムによる潤滑油の劣化評価試験＞
　循環システムによる潤滑油の劣化評価試験は、ＪＣＭＡＳ　Ｐ０４５のＡ２Ｆポンプ試験に準拠して行った。具体的には、フィルタユニット及び斜軸型ピストンポンプを設置した油圧回路を用いて、オイルタンクに潤滑油組成物１又は２を１３Ｌと、触媒としてＣｕコイルを入れ、１．０Ｌ／ｈの流量で空気を吹き込み、オイルタンク油温を８０±５℃に保ちながら、毎分１５００回転でポンプを回転させて潤滑油を循環させ、潤滑油中の夾雑物の量が１０ｍｇ／１００ｍＬを上回るまでの時間を測定することで、潤滑油の劣化を評価した。 <Deterioration evaluation test of lubricating oil by circulating system>
The deterioration evaluation test of the lubricating oil by the circulation system was performed in accordance with the A2F pump test of JCMAS P045. Specifically, using a hydraulic circuit in which a filter unit and a slant shaft type piston pump are installed, 13 L of lubricating oil composition 1 or 2 is placed in an oil tank, a Cu coil is placed as a catalyst, and a flow rate of 1.0 L / h While blowing the air and keeping the oil tank oil temperature at 80 ± 5 ° C., rotate the pump at 1500 rpm to circulate the lubricating oil until the amount of contaminants in the lubricating oil exceeds 10 mg / 100 mL. By measuring the time, deterioration of the lubricating oil was evaluated.
＜循環システムによる潤滑油の防錆効果持続評価試験＞
　循環システムによる潤滑油の防錆効果持続評価試験は、図４に示す防錆効果持続評価試験設備２０を用い、ＪＩＳ　Ｋ２５１０の人工海水試験に準拠したさび止め試験を行うことで実施した。具体的には、フィルタユニット２１、ギアポンプ２２、流量計２３及びクーラー２４を設置した回路を用いて、オイルタンク２５に潤滑油組成物３又は４を４２Ｌと、触媒としてＣｕコイルを入れ、５Ｌ／ｈの流量で空気を吹き込み、オイルタンク油温を９５℃±５℃に保ちながら、吐出圧１０±１ＭＰａとなるようにポンプを稼働させて潤滑油を循環させ、２０００時間ごとに採油してさび止め試験を実施し、「さびあり」と判断されるまでの時間を測定することで、潤滑油の防錆効果持続時間を評価した。 <Continuous evaluation test of rust prevention effect of lubricating oil by circulating system>
The rust prevention effect continuous evaluation test of the lubricating oil by the circulation system was carried out by performing a rust prevention test based on the artificial seawater test of JIS K2510 using the rust prevention effect continuous evaluation test equipment 20 shown in FIG. Specifically, using a circuit in which the filter unit 21, the gear pump 22, the flow meter 23, and the cooler 24 are installed, 42L of the lubricating oil composition 3 or 4 is placed in the oil tank 25, and a Cu coil is placed as a catalyst. While blowing air at a flow rate of h and keeping the oil tank oil temperature at 95 ° C ± 5 ° C, the pump is operated to circulate the lubricating oil to a discharge pressure of 10 ± 1 MPa, and oil is collected every 2000 hours to rust. The duration of the rust prevention effect of the lubricating oil was evaluated by conducting a stop test and measuring the time until it was judged as “rust”.
（実施例１～３及び比較例１～２）
　実施例１～３及び比較例１～２においては、以下の表２に示す潤滑油組成物を用いて、表２に示すような交換サイクルにてフィルタユニットの交換を行い、上述した潤滑油の劣化評価試験を行った。なお、評価試験開始時のフィルタユニットは、いずれの実施例及び比較例においても酸化防止剤成分を含まないフィルタユニットを用い、フィルタユニットの交換は１０００時間ごとに行った。表２中、酸化防止剤を含有するフィルタを有するフィルタユニットで交換を行った場合を「Ａ」、酸化防止剤を含有しないフィルタを有するフィルタユニットで交換を行った場合を「Ｂ」と表記する。 (Examples 1 to 3 and Comparative Examples 1 to 2)
In Examples 1 to 3 and Comparative Examples 1 and 2, the filter unit was replaced in the replacement cycle shown in Table 2 using the lubricating oil composition shown in Table 2 below. A deterioration evaluation test was conducted. In addition, the filter unit at the time of the start of an evaluation test used the filter unit which does not contain antioxidant component in any Example and comparative example, and performed replacement | exchange of the filter unit every 1000 hours. In Table 2, “A” indicates that the filter unit has a filter containing an antioxidant, and “B” indicates that the filter unit has a filter that does not contain an antioxidant. .
（実施例４～６及び比較例３～４）
　実施例４～６及び比較例３～４においては、以下の表３に示す潤滑油組成物を用いて、表３に示すような交換サイクルにてフィルタユニットの交換を行い、上述した潤滑油の防錆効果持続評価試験を行った。なお、評価試験開始時のフィルタユニットは、いずれの実施例及び比較例においても防錆剤成分を含まないフィルタユニットを用い、フィルタユニットの交換は４０００時間ごとに行った。表３中、防錆剤を含有するフィルタを有するフィルタユニットで交換を行った場合を「Ａ」、防錆剤を含有しないフィルタユニットを有するフィルタユニットで交換を行った場合を「Ｂ」と表記する。 (Examples 4 to 6 and Comparative Examples 3 to 4)
In Examples 4 to 6 and Comparative Examples 3 to 4, the lubricating oil composition shown in Table 3 below was used, and the filter unit was replaced in the replacement cycle shown in Table 3. Rust prevention effect duration evaluation test was conducted. In addition, the filter unit at the time of an evaluation test start used the filter unit which does not contain a rust preventive agent component in any Example and comparative example, and performed replacement | exchange of the filter unit every 4000 hours. In Table 3, “A” indicates that the filter unit has a filter containing a rust inhibitor, and “B” indicates that the filter unit has a filter unit that does not contain a rust inhibitor. To do.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
　表２の結果から明らかなように、実施例１～３では、本発明に係るフィルタユニットを用いてフィルタユニットを交換した場合には、酸化防止剤を含まないフィルタユニットを用いてフィルタユニットを交換した比較例１及び２と比較して、潤滑油組成物の劣化が抑制された。すなわち、実施例１～３では、長期間にわたって機械寿命を充分に保証するための優れた長寿命性を有する潤滑油を、安定的に供給することができることが分かる。さらに、フィルタ交換時に本発明に係るフィルタユニットを用いてフィルタ交換を行うことにより、更に長期間にわたって潤滑油の劣化を抑制することができることが分かる。 As is apparent from the results in Table 2, in Examples 1 to 3, when the filter unit was replaced using the filter unit according to the present invention, the filter unit was replaced using a filter unit not containing an antioxidant. In comparison with Comparative Examples 1 and 2, the deterioration of the lubricating oil composition was suppressed. That is, in Examples 1 to 3, it can be seen that a lubricating oil having an excellent long life for sufficiently assuring a mechanical life over a long period can be stably supplied. Further, it can be seen that the deterioration of the lubricating oil can be suppressed for a longer period by replacing the filter using the filter unit according to the present invention at the time of replacing the filter.
　これに対し、比較例１及び２によれば、潤滑油組成物における酸化防止剤の濃度を２倍に増やしても、潤滑油が劣化するまでの時間を２倍にすることはできないことが示されている。すなわち、本発明に係るフィルタユニットを用いて潤滑油中に酸化防止剤を供給することで、潤滑油組成物中に予め同量の酸化防止剤を添加するよりも効果的に潤滑油組成物の劣化を抑制することができることが分かる。 On the other hand, according to Comparative Examples 1 and 2, it is shown that even if the concentration of the antioxidant in the lubricating oil composition is doubled, the time until the lubricating oil deteriorates cannot be doubled. Has been. That is, by supplying an antioxidant into the lubricating oil using the filter unit according to the present invention, the lubricating oil composition is more effectively produced than adding the same amount of the antioxidant in the lubricating oil composition in advance. It turns out that deterioration can be suppressed.
　また、表３の結果から明らかなように、実施例４～６では、本発明に係るフィルタユニットを用いてフィルタユニットを交換した場合には、防錆剤を含まないフィルタユニットを用いてフィルタユニットを交換した比較例３及び４と比較して、潤滑油組成物の防錆効果持続時間が延長された。すなわち、添加剤として防錆剤を用いた場合には、長期間にわたって防錆効果を持続させることができ、機械寿命を充分に保証するための優れた長寿命性を有する潤滑油を、安定的に供給することができることが分かる。 Further, as is apparent from the results in Table 3, in Examples 4 to 6, when the filter unit was replaced using the filter unit according to the present invention, the filter unit using a filter unit containing no rust preventive was used. Compared with Comparative Examples 3 and 4 in which the rust was replaced, the duration of the rust prevention effect of the lubricating oil composition was extended. That is, when a rust inhibitor is used as an additive, a rust preventive effect can be maintained over a long period of time, and a lubricating oil having an excellent long life for sufficiently guaranteeing the mechanical life can be stably It can be seen that can be supplied.
　また、比較例３及び４においても、比較例１及び２と同様に、潤滑油組成物における防錆剤の濃度を２倍に増やしても、潤滑油の防錆効果持続時間を２倍にすることはできないことが示されている。すなわち、本発明に係るフィルタユニットを用いて潤滑油中に防錆剤を供給することで、潤滑油組成物中に予め同量の防錆剤を添加するよりも効果的に潤滑油組成物の防錆効果を持続できることが分かる。 Further, in Comparative Examples 3 and 4, as in Comparative Examples 1 and 2, even if the concentration of the rust inhibitor in the lubricating oil composition is doubled, the rust preventive effect duration of the lubricating oil is doubled. It has been shown that it cannot be done. That is, by supplying a rust inhibitor into the lubricating oil using the filter unit according to the present invention, the lubricating oil composition can be effectively applied rather than adding the same amount of the rust inhibitor in advance to the lubricating oil composition. It can be seen that the antirust effect can be sustained.
　１…循環システム、３…被潤滑部、５…フィルタユニット設置部、７…第１の流路、９…第２の流路、１１…蓋部、１２…支持部材、１３…フィルタ、１４…底板部、１５…添加剤供給部、１６…添加剤収容部、２０…防錆効果持続評価試験設備、２１…フィルタユニット、２２…ギアポンプ、２３…流量計、２４…クーラー、２５…オイルタンク。 DESCRIPTION OF SYMBOLS 1 ... Circulation system, 3 ... Lubrication part, 5 ... Filter unit installation part, 7 ... 1st flow path, 9 ... 2nd flow path, 11 ... Cover part, 12 ... Support member, 13 ... Filter, 14 ... Bottom plate part, 15 ... Additive supply part, 16 ... Additive storage part, 20 ... Rust prevention effect continuous evaluation test equipment, 21 ... Filter unit, 22 ... Gear pump, 23 ... Flow meter, 24 ... Cooler, 25 ... Oil tank.

Claims (4)

  1. 　潤滑油に含まれる不純物を除去するフィルタと、
    　前記潤滑油に添加剤を供給する供給部と、を備えるフィルタユニット。     A filter for removing impurities contained in the lubricating oil;
    And a supply unit for supplying an additive to the lubricating oil.
  2. 　前記供給部は、前記添加剤が保持されている前記フィルタである、請求項１に記載のフィルタユニット。 The filter unit according to claim 1, wherein the supply unit is the filter in which the additive is held.
  3. 　前記供給部は、前記添加剤を収容する収容部を備える、請求項１に記載のフィルタユニット。 The filter unit according to claim 1, wherein the supply unit includes a storage unit that stores the additive.
  4. 　潤滑油が流通する流路と、前記流路に設けられた請求項１～３のいずれか一項に記載のフィルタユニットとを備える、潤滑油の循環システム。 A lubricating oil circulation system comprising a flow path through which lubricating oil circulates and the filter unit according to any one of claims 1 to 3 provided in the flow path.
PCT/JP2016/078885 2015-09-29 2016-09-29 Filter unit and lubrication oil circulation system WO2017057611A1 (en)

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JPH09141011A (en) * 1995-11-16 1997-06-03 Wako Sangyo Kk Fluid filter and engine oil filtering device using the same
JPH1122442A (en) * 1997-07-03 1999-01-26 Toyota Motor Corp Engine oil deterioration preventing agent and engine oil deterioration preventing device
JP2003532536A (en) * 2000-05-08 2003-11-05 ハネウェル・インターナショナル・インコーポレーテッド Multi-stage fluid filter, method of manufacturing and using the same
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US20150165355A1 (en) * 2013-12-13 2015-06-18 Mann+Hummel Gmbh Filter for Fluids and an Additive Container for a Filter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58108213U (en) * 1982-01-19 1983-07-23 トヨタ自動車株式会社 Cartridge type oil filter element for internal combustion engines
JPH09141011A (en) * 1995-11-16 1997-06-03 Wako Sangyo Kk Fluid filter and engine oil filtering device using the same
JPH1122442A (en) * 1997-07-03 1999-01-26 Toyota Motor Corp Engine oil deterioration preventing agent and engine oil deterioration preventing device
JP2003532536A (en) * 2000-05-08 2003-11-05 ハネウェル・インターナショナル・インコーポレーテッド Multi-stage fluid filter, method of manufacturing and using the same
JP2005502803A (en) * 2001-05-30 2005-01-27 ハネウェル・インターナショナル・インコーポレーテッド Multistage oil filter incorporating additive release particles
US20070108115A1 (en) * 2005-11-15 2007-05-17 Cline L S Chemical additive carrier for filter
JP2013224654A (en) * 2007-02-13 2013-10-31 Fram Group Ip Llc Additive dispersing filter and method
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US20150165355A1 (en) * 2013-12-13 2015-06-18 Mann+Hummel Gmbh Filter for Fluids and an Additive Container for a Filter

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