WO2018147223A1 - フィルタ装置及び濾過装置 - Google Patents

フィルタ装置及び濾過装置 Download PDF

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Publication number
WO2018147223A1
WO2018147223A1 PCT/JP2018/003798 JP2018003798W WO2018147223A1 WO 2018147223 A1 WO2018147223 A1 WO 2018147223A1 JP 2018003798 W JP2018003798 W JP 2018003798W WO 2018147223 A1 WO2018147223 A1 WO 2018147223A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filtration unit
filter element
region
substantially cylindrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/003798
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
信行 北島
岡本　美信
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamashin Filter Corp
Original Assignee
Yamashin Filter Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yamashin Filter Corp filed Critical Yamashin Filter Corp
Priority to EP18750647.2A priority Critical patent/EP3581253B1/en
Priority to CN201880010950.9A priority patent/CN110290849B/zh
Publication of WO2018147223A1 publication Critical patent/WO2018147223A1/ja
Priority to US16/460,750 priority patent/US10702808B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/23—Supported filter elements arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/23—Supported filter elements arranged for outward flow filtration
    • B01D29/232—Supported filter elements arranged for outward flow filtration with corrugated, folded or wound sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/92—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate
    • B01D29/925—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate containing liquid displacement elements or cores
    • 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
    • B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
    • 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
    • B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
    • B01D35/0276—Filtering elements with a vertical rotation or symmetry axis mounted on tanks or reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/001—Filters in combination with devices for the removal of gas, air purge systems
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0415—Details of supporting structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/30—Filter housing constructions
    • B01D2201/301—Details of removable closures, lids, caps, filter heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
    • B01D29/07—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
    • 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
    • B01D35/005—Filters specially adapted for use in internal-combustion engine lubrication or fuel systems
    • 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
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/147—Bypass or safety valves
    • 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
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/153—Anti-leakage or anti-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding

Definitions

  • the present invention relates to a filter device and a filtration device.
  • Patent Document 1 includes a first filtering unit that includes a cylindrical filter medium and filters the liquid to be filtered by passing the liquid to be filtered from the inside toward the outside, and the first filtering unit.
  • a filtration device comprising a second filtration unit for further filtering the obtained liquid is disclosed.
  • the first filtration unit and the second filtration unit are placed in the tank so as to overlap each other and with the second filtration unit in contact with one end of the first filtration unit. Be placed.
  • the tank can be miniaturized to improve the degree of design freedom, and the tank structure can be simplified.
  • the pump When air passes through the filtration device together with the liquid, the pump may malfunction because the air sucks air, or bubbles may rupture in the hydraulic circuit, causing the temperature and pressure of the hydraulic oil to temporarily become extremely high. There is a risk of damage to parts.
  • the present invention has been made in view of such circumstances, and prevents bubbles from flowing out of the tank together with the liquid during filtration, and prevents dust or the like captured by filtration during the filter element replacement from dropping into the tank.
  • An object of the present invention is to provide a filter device and a filtration device that can perform the above-described operation.
  • a filter device includes, for example, a first filtration unit provided so as to protrude from the upper surface of a tank into the tank, and a flat surface below the first filtration unit.
  • a substantially cylindrical second filtration unit provided so as to overlap the first filtration unit in view, wherein the first filtration unit is provided with a plurality of openings on a side surface.
  • An inflow portion provided between the bottom surface of the filter case and the filter element in the height direction, and the lid member is The filter element is detachably provided to the filter case, and the filter element is detachably provided to the filter case through the opening end.
  • the filter element is substantially the same as the filter medium and the filter medium.
  • the substantially cylindrical filter element is provided inside the bottomed substantially cylindrical filter case having a plurality of openings on the side surface, and the bottom surface of the filter case in the height direction.
  • a fluid is caused to flow into the hollow portion of the filter element from an inflow portion provided between the filter element and the filter element.
  • the inner cylinder provided inside the substantially cylindrical filter medium has a first region in which an opening is formed on substantially the entire surface and a second region in which no opening is formed, and the second region. Is provided below the first region so as to include the lower end of the inner cylinder.
  • the second region may be approximately 1 ⁇ 4 or more of the entire height of the inner cylinder. Therefore, dust can be reliably captured between the inner cylinder and the filter medium.
  • a filtration device includes a tank, a first filtration unit provided so as to protrude from the upper surface of the tank into the tank, and a lower side of the first filtration unit.
  • a filter device having a substantially cylindrical second filtration unit provided so as to overlap the first filtration unit in plan view, and the first filtration unit has a plurality of openings on a side surface.
  • the member is detachably provided to the filter case, the filter element is detachably provided to the filter case via the opening end, and the filter element includes a substantially cylindrical filter medium and the filter medium
  • a substantially cylindrical inner cylinder provided on the inner side of the filter medium, and the inner cylinder has a first region in which an opening is formed on substantially the entire surface, and the opening.
  • the second region is provided on the lower side of the first region so as to include the lower end of the inner cylinder.
  • the present invention it is possible to prevent bubbles from flowing out of the tank together with the liquid during filtration, and it is possible to prevent dust or the like captured by filtration during replacement of the filter element from dropping into the tank.
  • FIG. 1 is a cross-sectional view showing an outline of a filter device 1.
  • FIG. It is a perspective view which shows the outline of the filter apparatus 1 when cut
  • FIG. 1 is a diagram showing an outline of a hydraulic oil tank 100 in which a filter device 1 according to an embodiment of the present invention is provided.
  • the principal part of the hydraulic oil tank 100 is seen through, and some parts are shown in cross section (however, hatching indicating the cross section is omitted).
  • the hydraulic oil tank 100 is installed in a working machine (not shown) (for example, a hydraulic device), and is a tank for storing hydraulic oil provided in a hydraulic circuit for hydraulic oil supplied to the hydraulic device. is there. In the hydraulic circuit, the hydraulic oil is introduced into the hydraulic oil tank 100 through the hydraulic device.
  • a working machine for example, a hydraulic device
  • the hydraulic oil is introduced into the hydraulic oil tank 100 through the hydraulic device.
  • the hydraulic oil tank 100 includes, for example, a box-shaped tank body 101, and the inside of the tank body 101 is hollow. Inside the tank body 101, the filter device 1 is mainly provided.
  • a hole 101b into which the filter device 1 is inserted is formed in the upper surface 101a of the tank body 101.
  • the filter device 1 is fixed to the tank body 101 by providing the cover member 14 (detailed later) of the filter device 1 on the upper surface of the upper surface 101a.
  • the filter device 1 mainly includes a first filtration unit 10, a second filtration unit 20, and a third unit 30.
  • the first filtration unit 10 and the third unit 30 have a substantially cylindrical shape with a bottom, and the second filtration unit 20 has a substantially cylindrical shape.
  • the second filtration unit 20 and the third unit 30 are provided below the first filtration unit 10 so as to overlap the first filtration unit 10 in plan view (as viewed from the z direction).
  • the second filtration unit 20 is provided near the bottom surface 101 c of the tank body 101.
  • the third unit 30 is provided between the first filtration unit 10 and the second filtration unit 20.
  • the first filtration unit 10, the second filtration unit 20, and the third unit 30 have substantially the same direction of the central axis.
  • the central axes of the first filtration unit 10, the second filtration unit 20, and the third unit 30 are substantially coincident, but they may not be substantially coincident.
  • FIG. 2 is a sectional view schematically showing the filter device 1.
  • FIG. 3 is a perspective view showing an outline of the filter device 1 and is a view showing a state in which the filter device 1 is cut along the center line. 2 and 3, hatching indicating a cross section is omitted.
  • the first filtration unit 10 includes a filter element 11, a filter case 12, a lid member 14, an inflow pipe 15, and a valve 16.
  • the filter element 11 is a substantially cylindrical member as a whole, and is provided inside the filter case 12.
  • the filter element 11 mainly includes an inner cylinder 111, a filter medium 112, and plates 113 and 114.
  • the filter medium 112 is for filtering hydraulic oil, and has a substantially cylindrical shape having a thickness in the radial direction.
  • the filter medium 112 is formed by folding a filter paper made of synthetic resin, paper, or the like, and connecting both ends of the filter paper that has been folded and rounding it into a cylindrical shape.
  • the inner cylinder 111 is a substantially cylindrical member made of metal and is provided inside the filter medium 112.
  • the height of the inner cylinder 111 and the height of the filter medium 112 are substantially the same.
  • the inner cylinder 111 has a first region A1 in which an opening 111a through which hydraulic oil passes is formed on a substantially entire surface, and a second region A2 in which the opening 111a is not formed.
  • the second region A2 is provided below the first region A1 so as to include the lower end of the inner cylinder 111.
  • the second area A2 is approximately 1 ⁇ 4 of the entire height of the inner cylinder 111, but the height of the second area A2 is not limited to this. However, in order to prevent dust and the like from leaking outside, it is desirable that the second region A2 is approximately 1 ⁇ 4 or more of the entire height of the inner cylinder 111. Further, the second region A2 is desirably 1/3 to half or less of the height of the first region A1 so as not to hinder the flow of hydraulic oil.
  • a plate 113 is provided at the lower end of the inner cylinder 111 and the filter medium 112, and a plate 114 is provided at the upper end.
  • the plate 113 and the plate 114 are members having a substantially disc shape or a bottomed substantially cylindrical shape, and are formed using a resin or a metal.
  • Each of the plate 113 and the plate 114 is formed with openings 113a and 114a at substantially the center.
  • the filter case 12 is a bottomed substantially cylindrical member as a whole, and is formed of metal.
  • the filter case 12 mainly includes a first case 121, a second case 122, and attachment members 123 and 124.
  • a second case 122 is integrally formed on the upper side of the first case 121.
  • the first case 121 is a bottomed substantially cylindrical member, and the valve 16 is provided on the bottom surface 12a.
  • the valve 16 opens and closes according to the difference between the pressure inside the first case 121 (space S1) and the pressure inside the tank body 101 (space S2, see FIG. 1).
  • the opening 12c in which the inflow pipe 15 is provided is formed in the side surface 12b of the first case 121.
  • the inflow pipe 15 is provided between the bottom surface 12a and the filter element 11 in the height direction (z direction).
  • the inflow pipe 15 penetrates the side surface 101e of the tank body 101 (see FIG. 1), and communicates the inside of the filter case 12 and the outside of the tank body 101.
  • the hydraulic oil flowing in from the inflow pipe 15 passes through the inside of the first case 121 and is guided to the hollow portion of the filter element 11 in the space S1.
  • the second case 122 is a substantially cylindrical member, and the filter element 11 is provided therein.
  • a plurality of holes 12e are formed in the side surface 12d of the second case 122.
  • the hole 12e is provided with a wire mesh (not shown) formed by weaving a metal wire.
  • the hydraulic oil that has passed through the filter medium 112 passes through the gap of the wire mesh in the hole 12e.
  • the gaps of the wire mesh in the hole 12e correspond to a plurality of openings.
  • a mounting member 123 is provided on the lower end surface of the second case 122.
  • the attachment member 123 has a substantially disk-shaped bottom surface portion 123a and a cylindrical portion 123b that protrudes upward along the inner peripheral surface of the bottom surface portion 123a.
  • the filter element 11 (here, the lower surface of the plate 113) is placed on the bottom surface portion 123a.
  • the cylindrical portion 123b is inserted into the opening 113a. Thereby, the inside of the first case 121 communicates with the hollow portion of the filter element 11.
  • a mounting member 124 is provided near the upper end of the side surface 12d.
  • the lid member 14 is attached to the upper surface 101a via the attachment member 124.
  • the attachment member 124 is not essential.
  • the lid member 14 is a substantially plate-like member that covers the upper open end of the filter case 12.
  • the lid member 14 is detachably provided on the filter case 12.
  • the lid member 14 has a first lid 141 and a second lid 142.
  • the first lid 141 has a substantially disk shape, and a hollow portion 141a is formed at a substantially center.
  • substantially cylindrical projecting portions 142a and 142b projecting downward are formed.
  • the protruding portion 142a is inserted into the hollow portion 141a.
  • the protrusion 142b is inserted into the opening 114a.
  • the filter element 11 can be extracted from the open end of the upper part of the filter case 12.
  • the filter element 11 is provided inside the second case 122 by being sandwiched between the second lid 142 and the attachment member 123.
  • the lid member 14 includes a substantially disc-shaped first lid 141 and a second lid 142, but the form of the lid member 14 is not limited to this.
  • the lid member 14 may be a single component.
  • the second filtration unit 20 is, for example, a suction strainer for preventing foreign matter from entering the hydraulic pump.
  • the second filtration unit 20 mainly includes a substantially cylindrical main body 21 made of metal and a filter medium 22 provided outside the main body 21.
  • the main body 21 is a substantially cylindrical member made of metal, and a plurality of holes 21a are formed on the side surface.
  • the filter medium 22 is formed by folding a wire mesh formed by weaving a metal wire, connecting both ends of the folded wire mesh, and rounding the wire mesh into a cylindrical shape.
  • An outflow portion 101d is formed on the bottom surface 101c of the tank body 101 (see FIG. 2).
  • the outflow portion 101 d is formed so as to protrude from the bottom surface 101 c into the tank main body 101 and is inserted into the main body portion 21.
  • a seal member 23 (for example, an O-ring) is provided between the outflow portion 101 d and the main body portion 21 so that the liquid filtered by the second filtration unit 20 does not leak into the tank main body 101.
  • the outflow portion 101d inserted into the main body portion 21 is formed on the bottom surface 101c, but the position of the outflow portion 101d is not limited to this.
  • a substantially L-shaped outflow portion may be formed in the vicinity of the lower end portion of the side surface 101 e and the tip thereof may be inserted into the main body portion 21.
  • the third unit 30 is a bottomed substantially cylindrical member made of metal and is provided below the bottom surface 12a of the first case 121.
  • the third unit 30 connects the first filtration unit 10 and the second filtration unit 20.
  • the third unit 30 and the main body 21 are integrally formed, but the third unit 30 and the main body 21 may be separate parts.
  • a plurality of holes 30 a through which hydraulic oil passes are formed on the side surface of the third unit 30.
  • FIGS. 1 and 2 indicate the flow of hydraulic oil.
  • Hydraulic oil is flowing in the hydraulic circuit during operation of the hydraulic system. As shown in FIG. 2, the hydraulic oil flows into the space S1 through the inflow pipe 15 and the opening 12c. The hydraulic oil is filtered by flowing from the inside to the outside of the filter element 11. The filtered hydraulic oil flows out into the space S2 (see FIG. 1) from a plurality of openings (here, gaps in the wire mesh provided in the holes 12e) formed in the side surface 12d. As a result, the hydraulic oil is filtered by the first filtration unit 10 and stored in the hydraulic oil tank 100.
  • the inflow pipe 15 is provided between the bottom surface 12a of the filter case 12 and the filter element 11 in the height direction. Accordingly, the position of the inflow pipe 15 is below the oil level L, and the oil level L rises when hydraulic oil flows from the inflow pipe 15 (see the two-dot chain line and the white arrow in FIG. 1).
  • the opening 111a through which the hydraulic oil passes is formed only in the first region A1. Therefore, unless the oil level L is higher than the lower side of the first region A1, the hydraulic oil does not pass through the filter medium 112 and the hole 12e. Therefore, in the stage where the oil level L rises, the position in the height direction (outflow position) where the hydraulic oil flows out through the hole 12e is in the vicinity of the oil level L.
  • the hydraulic oil can pass through the hole 12e, but almost no bubbles can pass through, and particularly large bubbles cannot pass through the hole 12e. Therefore, the bubbles contained in the hydraulic oil disappear after rising up to the oil level L inside the side surface 12d. Even if bubbles are mixed in the hydraulic oil flowing out from the hole 12e, the bubbles immediately rise to the oil level L and disappear because the outflow position is in the vicinity of the oil level L. Thus, air (bubbles) hardly flows to the vicinity of the bottom surface 101c of the tank body 101.
  • the hollow portion of the filter element 11 contains air.
  • the initial air is discharged from the space S1 to the space S2 through the hole 12e as the oil level L rises. Therefore, the initial air is not mixed into the filtered liquid.
  • the hydraulic oil stored in the space S2 (in the hydraulic oil tank 100) is filtered by the second filtration unit 20 and flows out from the outflow portion 101d. As a result, the filtered hydraulic oil is supplied again to the hydraulic device.
  • the filter element 112 When the filtration is repeated, the filter element 112 is clogged, so the filter element 11 is replaced.
  • the lid member 14 is removed from the filter case 12, and then the filter element 11 is pulled upward. As a result, the filter element 11 is extracted from the upper opening end of the filter case 12.
  • the inner cylinder 111 Since the inner cylinder 111 has the second area A2 in which the opening 111a is not formed, the dust and residual oil removed by the filter medium 112 accumulate between the inner cylinder 111 (second area A2) and the filter medium 112, It does not leak out of the filter element 11. Therefore, when the filter element 11 is replaced, dust and residual oil accumulated between the inner cylinder 111 and the filter medium 112 can be prevented from dripping into the second case 122.
  • the new filter element 11 after replacement is inserted from the opening end of the upper part of the filter case 12 and the lid member 14 is attached to the filter case 12, the new filter element 11 is provided inside the second case 122.
  • the second filtration unit 20 and the third unit 30 are provided below the first filtration unit 10 so as to overlap the first filtration unit 10 in plan view. It can be downsized.
  • the inflow pipe 15 is provided between the bottom surface 12a of the filter case 12 and the filter element 11 in the height direction, air bubbles are discharged to the vicinity of the oil level L, thereby causing the hydraulic oil from the hydraulic oil tank 100 together with the hydraulic oil. Air bubbles can be prevented from flowing out.
  • the opening 111a is not formed on the lower side (second region A2) of the inner cylinder, when the filter element 11 is replaced, the gap between the inner cylinder 111 and the filter medium 112 is reduced. It is possible to prevent dust and residual oil accumulated in the inside of the second case 122 from dripping.
  • a plurality of holes 12e are formed in the side surface 12d, and a plurality of openings are formed in the side surface of the second case 122 by providing a wire mesh (not shown) inside the hole 12e.
  • the form of the plurality of openings is not limited to this.
  • a plurality of openings may be formed on the side surface of the second case 122 by forming the entire side surface 12d with a wire mesh.
  • the second filtration unit 20 and the third unit 30 are provided below the first filtration unit 10, but the second filtration unit 20 and the third unit 30 are not essential. However, in order to reduce the size of the tank 101 and make it difficult for air bubbles to flow into the second filtration unit 20, it is desirable to provide the second filtration unit 20 below the first filtration unit 10.
  • substantially is a concept that includes not only a case where they are exactly the same but also errors and deformations that do not lose the identity.
  • substantially orthogonal is not limited to being strictly orthogonal, and is a concept including an error of, for example, several degrees.
  • orthogonal, parallel, coincidence, etc. not only strictly orthogonal, parallel, coincidence, etc. but also cases of substantially parallel, substantially orthogonal, substantially coincidence, etc. are included.
  • neighboring means including an area in a certain range (which can be arbitrarily determined) near the reference position.
  • a certain range which can be arbitrarily determined
  • Filter device 10 First filtration unit 11: Filter element 12: Filter case 12a: Bottom surface 12b: Side surface 12c: Opening 12d: Side surface 12e: Hole 13: Mounting member 14: Lid member 15: Inflow pipe 16: Valve 20: Second filtration unit 21: Main body 21a: Hole 22: Filter medium 23: Seal member 30: Third unit 30a: Hole 100: Hydraulic oil tank 101: Tank main body 101a: Upper surface 101b: Hole 101c: Bottom surface 101d: Outflow portion 101e: Side 111: Inner cylinder 111a: Opening 112: Filter media 113, 114: Plates 113a, 114a: Opening 121: First case 122: Second case 123 : Mounting member 123a: Bottom surface portion 123b: Cylindrical portion 124: Mounting member 141: First lid 141a: Hollow portion 142: Second lids 142a and 142b: Projection

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Analytical Chemistry (AREA)
  • Filtration Of Liquid (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Fluid-Pressure Circuits (AREA)
PCT/JP2018/003798 2017-02-13 2018-02-05 フィルタ装置及び濾過装置 Ceased WO2018147223A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18750647.2A EP3581253B1 (en) 2017-02-13 2018-02-05 Filter device and filtration device
CN201880010950.9A CN110290849B (zh) 2017-02-13 2018-02-05 过滤器装置及过滤装置
US16/460,750 US10702808B2 (en) 2017-02-13 2019-07-02 Filter device and filtration device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-024479 2017-02-13
JP2017024479A JP6892279B2 (ja) 2017-02-13 2017-02-13 フィルタ装置及び濾過装置

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US16/460,750 Continuation US10702808B2 (en) 2017-02-13 2019-07-02 Filter device and filtration device

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EP (1) EP3581253B1 (enExample)
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WO (1) WO2018147223A1 (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112125201A (zh) * 2020-08-27 2020-12-25 衡阳市雄焱工具有限公司 一种具有机械锁定功能的千斤顶及其使用方法
CN112169427A (zh) * 2019-07-03 2021-01-05 雅玛信过滤器株式会社 箱装置
EP3813978A4 (en) * 2018-11-02 2022-03-02 Schroeder Industries LLC HIGH PRESSURE FILTER ARRANGEMENT WITH MINIMIZED PRESSURE DROP
WO2024190590A1 (ja) * 2023-03-10 2024-09-19 ヤマシンフィルタ株式会社 フィルタ装置及び濾過装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112746994B (zh) * 2020-12-31 2023-05-26 航天重型工程装备有限公司 一种回液盒、液压油箱及液压系统
DE102021002428A1 (de) * 2021-05-07 2022-11-10 Hydac Filtertechnik Gmbh Filtervorrichtung
USD1042729S1 (en) * 2022-05-27 2024-09-17 Zuxing Chen Water filter element

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133763A (en) * 1977-12-05 1979-01-09 Pall Corporation Filter assembly with replaceable filter element
JPH04137711U (ja) * 1991-06-18 1992-12-22 東北電力株式会社 タンデム型自動ストレーナー
US20080197060A1 (en) * 2005-06-20 2008-08-21 Ufi Filters S.P.A. Double Acting Fuel Filter Unit
JP2008290004A (ja) 2007-05-24 2008-12-04 Yamashin-Filter Corp 濾過装置、タンク装置
JP4989832B2 (ja) * 1999-12-02 2012-08-01 ヘンクスト ゲーエムベーハー ウント コンパニー カーゲー 補助的な保持部材を備えた取り外し可能な中心部材を有する流体フィルタ
WO2016204118A1 (ja) * 2015-06-18 2016-12-22 ヤマシンフィルタ株式会社 リターンフィルタ

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5462679A (en) * 1993-09-16 1995-10-31 Nelson Industries, Inc. Apparatus and method for in situ cleaning of oil filter
GB2414422B (en) * 2002-06-07 2006-06-14 Baldwin Filters Inc Environmentally friendly acid neutralizing full flow cartridge
CN101411957A (zh) * 2008-08-26 2009-04-22 张金松 一种套接式滤芯
ITRE20110068A1 (it) * 2011-09-14 2013-03-15 Ufi Filters Spa Cartuccia filtrante e relativo gruppo filtrante
US9486725B2 (en) * 2013-02-21 2016-11-08 Caterpillar Inc. System and method for filtering fuel within fuel tank
JP6403514B2 (ja) * 2014-09-24 2018-10-10 ヤマシンフィルタ株式会社 フィルタ装置
CN105840125B (zh) * 2016-06-13 2019-02-01 新疆如通石油技术服务有限公司 一种可控反循环结构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133763A (en) * 1977-12-05 1979-01-09 Pall Corporation Filter assembly with replaceable filter element
JPH04137711U (ja) * 1991-06-18 1992-12-22 東北電力株式会社 タンデム型自動ストレーナー
JP4989832B2 (ja) * 1999-12-02 2012-08-01 ヘンクスト ゲーエムベーハー ウント コンパニー カーゲー 補助的な保持部材を備えた取り外し可能な中心部材を有する流体フィルタ
US20080197060A1 (en) * 2005-06-20 2008-08-21 Ufi Filters S.P.A. Double Acting Fuel Filter Unit
JP2008290004A (ja) 2007-05-24 2008-12-04 Yamashin-Filter Corp 濾過装置、タンク装置
WO2016204118A1 (ja) * 2015-06-18 2016-12-22 ヤマシンフィルタ株式会社 リターンフィルタ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3581253A4

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3813978A4 (en) * 2018-11-02 2022-03-02 Schroeder Industries LLC HIGH PRESSURE FILTER ARRANGEMENT WITH MINIMIZED PRESSURE DROP
CN112169427A (zh) * 2019-07-03 2021-01-05 雅玛信过滤器株式会社 箱装置
EP3995197A4 (en) * 2019-07-03 2022-07-13 Yamashin-Filter Corp. TANK DEVICE
US12025085B2 (en) 2019-07-03 2024-07-02 Yamashin-Filter Corp. Tank device
CN112125201A (zh) * 2020-08-27 2020-12-25 衡阳市雄焱工具有限公司 一种具有机械锁定功能的千斤顶及其使用方法
WO2024190590A1 (ja) * 2023-03-10 2024-09-19 ヤマシンフィルタ株式会社 フィルタ装置及び濾過装置

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EP3581253A1 (en) 2019-12-18
JP6892279B2 (ja) 2021-06-23
JP2018130651A (ja) 2018-08-23
EP3581253B1 (en) 2021-03-31
CN110290849A (zh) 2019-09-27
US20190321758A1 (en) 2019-10-24
CN110290849B (zh) 2021-09-07
EP3581253A4 (en) 2020-02-26
US10702808B2 (en) 2020-07-07

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