WO2015097799A1 - フィルタ取外工具 - Google Patents
フィルタ取外工具 Download PDFInfo
- Publication number
- WO2015097799A1 WO2015097799A1 PCT/JP2013/084761 JP2013084761W WO2015097799A1 WO 2015097799 A1 WO2015097799 A1 WO 2015097799A1 JP 2013084761 W JP2013084761 W JP 2013084761W WO 2015097799 A1 WO2015097799 A1 WO 2015097799A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter element
- filter
- opening
- removal tool
- housing
- Prior art date
Links
- 238000003780 insertion Methods 0.000 claims abstract description 44
- 230000037431 insertion Effects 0.000 claims abstract description 44
- 239000012530 fluid Substances 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 18
- 239000004202 carbamide Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 238000005452 bending Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/0035—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for motor-vehicles
- B25B27/0042—Tools for removing or replacing filters or for draining oil; Tools for setting or loosening closure means for radiators, batteries, or the like
-
- 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
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
-
- 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
-
- 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
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/04—Filling or draining lubricant of or from machines or engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/24—Tools used for the removal of filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/29—Filter cartridge constructions
- B01D2201/291—End caps
- B01D2201/295—End caps with projections extending in a radial outward direction, e.g. for use as a guide, spacing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/34—Seals or gaskets for filtering elements
- B01D2201/347—Radial sealings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53687—Means to assemble or disassemble by rotation of work part
Definitions
- the present invention relates to a filter removal tool.
- an exhaust gas aftertreatment device for purifying exhaust gas of an internal combustion engine such as a diesel engine one having a reduction catalyst using ammonia obtained from an aqueous urea solution as a reducing agent is known.
- the aqueous urea solution is pumped from the tank to the injector, injected from the injector into the exhaust pipe on the upstream side of the reduction catalyst, and then thermally decomposed by the heat of the exhaust gas.
- Ammonia is obtained by thermal decomposition, and this ammonia is supplied to the reduction catalyst to purify nitrogen oxides in the exhaust gas.
- the urea aqueous solution stored in the tank is pumped by a pump.
- the pressure pump includes a filter element for filtering the urea aqueous solution and a housing for housing these.
- a cap that closes the opening for attaching and detaching the filter element is screwed into the lower portion of the housing.
- the filter removal tool has a structure in which the hook-shaped engagement portion is elastically deformed as it is inserted into the housing and is elastically restored by engaging with the filter element. It is necessary to push the filter removal tool against the generated force, which places a heavy burden on the operator. Therefore, there is a problem that it takes time to replace the filter element.
- Patent Document 1 a filter device described in Patent Document 1 has been proposed.
- This filter device includes a cylindrical filter element accommodated in a housing, and a cap (lid) engaged with the lower end of the filter element.
- the filter element and the cap are assembled together in advance, and the filter element is accommodated in the housing by screwing the female screw portion provided in the cap with the male screw portion provided in the housing.
- the cap is removed from the housing, the filter element is removed integrally with the cap, and these assemblies are replaced together. Accordingly, no filter removal tool is required when replacing the filter element, and the labor required for work can be reduced.
- Patent Documents 2 and 3 describe a filter removal tool having a structure for receiving oil or the like that leaks when a filter element is replaced. According to such a filter removal tool, it is possible to suppress the oil from falling on the operator.
- JP 2000-176217 A Japanese Patent Laid-Open No. 11-221777 JP 2010-19206 A
- the filter device described in Patent Document 1 has a problem that when replacing the filter element, the cap is discarded together with the filter element that is no longer needed, so that the part cost increases and the maintenance cost increases. . Further, when it is desired to replace only the filter element for some reason, it is necessary to remove the filter element from the cap using a special tool, and the work is complicated.
- An object of the present invention is to provide a filter removal tool capable of easily replacing a filter element and repeatedly using a cap as it is even after the replacement operation.
- the filter removal tool of the present invention is a filter removal tool for removing a cylindrical filter element accommodated in the housing through an opening provided in the housing, and is screwed around the opening of the housing.
- the mounting portion provided with the threaded portion and the base end are integrated with the mounting portion, the distal end is a free end, and moves along the axial direction of the filter element by screwing the mounting portion.
- An insertion portion that is elastically deformable in a radial direction perpendicular to the axial direction and that is inserted into a central hole provided in the filter element from the opening when the mounting portion is screwed, It is provided with the engaging part which is provided in the front-end
- the filter removal tool since the filter removal tool includes an attachment portion provided with a threaded portion that is screwed into the housing, when removing the filter element in the housing using the filter removal tool, the insertion portion may be inserted into the center hole of the filter element, and the mounting portion may be screwed into the housing, and the insertion portion can be accurately inserted into the filter element along with the screwing.
- the insertion portion can be easily elastically deformed, such as by bending the insertion portion in the radial direction by movement along the axial direction during screwing, and the engagement portion at the tip can be engaged with the filter element. Further, by rotating the mounting portion in the opposite direction from such a state to unscrew the housing, the filter element can be pulled out, and the filter element can be easily replaced.
- the cap used to close the opening is separated from the filter element, and can be configured as a single component such as a pressure feed pump, as with the filter element. For this reason, it is not necessary to replace
- the length of the insertion portion is longer than the length in the axial direction of the filter element, and the engagement surface of the engagement portion is positioned immediately before the attachment portion is screwed.
- the distance generated between the both end surfaces of the filter element and the engaged portion provided in the vicinity of the end surface on the far side away from the opening is the axial direction of the mounting portion by screwing of the mounting portion It is preferable that it is below the movable length of this.
- the filter removal tool of the present invention preferably includes an adjustment member that is detachably attached to the insertion portion and adjusts the elastic modulus of the insertion portion.
- an adjustment member that is detachably attached to the insertion portion and adjusts the elastic modulus of the insertion portion.
- the bending portion of the insertion portion is shortened by the adjusting member. Adjust the elastic modulus to be large and make the insertion part difficult to bend. In this way, when the filter element is pulled out of the housing by the screw release operation of the mounting portion, there is no fear that the engaging portion is easily bent even if the engaging portion is bent due to a load applied to the engaging portion.
- the joint portion can be prevented from being unexpectedly detached from the filter element, and the filter element can be reliably pulled out from the housing.
- the insertion part is easily bent. In this way, even an operator can pinch the engaging portion and easily elastically deform the insertion portion with respect to the axial direction, and the filter element can be easily removed from the filter removal tool with the insertion portion elastically deformed. Can be removed.
- the attachment portion has a receiving portion that receives a fluid filtered by the filter element.
- the mounting portion has a structure such as being provided in a concave shape, it can be received by the receiving portion, such as fluid leaking when the filter is removed. It can be prevented from falling on your hand or splashing around.
- the filter element removed from the housing can be dropped into the receiving portion, and the engaging portion can be exposed from the end of the central hole of the filter element. For this reason, when removing the filter element from the filter removal tool, it is possible to easily pinch the exposed engagement portion and elastically deform the insertion portion in the radial direction.
- the engaging portion engages with the engaged portion provided in the vicinity of an end surface that is located away from the opening portion, on both end surfaces of the filter element. It is preferable to do.
- the engaging portion of the filter removal tool is provided so as to engage with the engaged portion in the vicinity of the end surface located away from the opening of the housing in the filter element.
- the insertion portion to be provided can be provided in a predetermined length considering the ease of bending, and the tip of the engagement portion can be easily exposed from the central hole of the filter element, so that it can be easily pinched.
- the elastic modulus may be adjusted using the adjusting member described above.
- the filter removal tool of the present invention is a filter removal tool for removing a cylindrical filter element accommodated in the housing through an opening provided in the housing, and is screwed around the opening of the housing.
- a mounting portion having a receiving portion for receiving the fluid filtered by the filter element, a base end is integrated with the mounting portion, a distal end is a free end, and the mounting portion is threaded.
- An insertion portion having a plurality of arm portions to be inserted into the central hole, and provided at the distal end of the insertion portion, and with the predetermined movement amount by screwing of the attachment portion.
- an adjusting member that is detachably attached to the arm portion of the insertion portion and adjusts the elastic modulus of the arm portion, and the length of the insertion portion is the filter.
- An end surface on the back side that is longer than the axial length of the element and is spaced from the opening of the engagement surface of the engagement portion and both end surfaces of the filter element at a position immediately before the mounting portion is screwed.
- a distance generated between the engaging portion provided in the vicinity is equal to or shorter than a movable length of the mounting portion in the axial direction by screwing of the mounting portion. According to the present invention, the above-described effects can be obtained similarly.
- the perspective view for demonstrating the use condition of the filter element removed with the filter removal tool which concerns on one Embodiment of this invention.
- the disassembled perspective view which shows the whole filter removal tool.
- FIG. 1 shows the use state of the filter element 92 removed by the filter removal tool.
- the filter element 92 is accommodated in a pressure feed pump 9 that supplies a urea aqueous solution to the selective reduction catalyst denitration apparatus.
- the selective reduction catalyst denitration device is mounted on a hydraulic excavator 1 as a construction machine as an exhaust gas aftertreatment device.
- FIG. 1 is a view of the excavator 1 as viewed from the rear side toward the front side.
- the excavator 1 includes a crawler-type lower traveling body 2, an upper revolving body 3 that is pivotably provided on the upper portion of the lower traveling body 2, and a cab 4 that is disposed on the left front side of the upper revolving body 3.
- a work machine 5 provided on the right side of the cab 4.
- the working machine 5 includes a boom 6 whose base end is rotatably connected to the upper swing body 3, an arm 7 whose base end is rotatably connected to the tip of the boom 6, and a tip of the arm 7. It has the bucket 8 connected so that rotation was possible.
- the boom 6, the arm 7, and the bucket 8 are respectively driven to rotate by a boom cylinder 6A, an arm cylinder 7A, and a bucket cylinder (not shown) that are hydraulic actuators.
- An engine room is provided on the rear side of the upper swing body 3, and a diesel engine (not shown) that is an internal combustion engine (hereinafter abbreviated as an engine) is mounted in the engine room.
- a hydraulic pump is driven by this engine, and pressure oil from the hydraulic pump is supplied to the boom cylinder 6A, the arm cylinder 7A, and the bucket cylinder, and is also supplied to a hydraulic motor that is a drive source of the lower traveling body 2.
- the exhaust gas aftertreatment device includes a filter device that collects PM (Particle Matter; particulate matter) in the exhaust gas, and a selective reduction catalyst that is disposed downstream of the filter device and purifies nitrogen oxides in the exhaust gas.
- a device equipped with a denitration device is employed.
- the reducing agent used for the reduction catalyst is ammonia generated from an aqueous urea solution.
- the upper swing body 3 is provided with a urea water tank for storing a urea aqueous solution for generating ammonia.
- the urea water tank is arranged in another arrangement space (not shown) isolated from the engine room so as not to be affected by heat from the engine.
- a pressure feed pump 9 for pressure-feeding the urea aqueous solution from the urea water tank to an injector provided in the exhaust pipe is provided.
- the aqueous urea solution pumped by the pump 9 is injected into the exhaust pipe by the injector and supplied to the reduction catalyst together with the exhaust gas.
- the pumping pump 9 has a configuration in which a pump body such as a vane pump is covered with a resin housing 91. As shown in FIG. 3, a filter element 92 that filters impurities mixed in the aqueous urea solution is accommodated in the housing 91. An opening 91A for attaching and detaching the filter element 92 is provided at the lower part of the housing 91, and the opening 91A is closed by a cap 93 (see FIG. 1) screwed into a male screw portion 91B provided around the opening 91A. It is.
- the filter element 92 includes an entire cylindrical element carrier 94 in which filter paper is folded back and forth in a bellows shape, and a resin-made annular holding member 95 that holds both end portions of the element carrier 94.
- the filter element 92 is accommodated in the accommodating portion 91C of the housing 91 such that the axis AL is vertical.
- An O-ring 96 is attached to each holding member 95, the O-ring 96 comes into contact with the inner surface of the accommodating portion 91C, and the filter element 92 is firmly held in the accommodating portion 91C by the tight force.
- the flow of the urea aqueous solution is indicated by an arrow.
- the urea aqueous solution from the urea water tank that has flowed into the housing portion 91C from the left in the drawing passes through the filter element 92 and reaches the center hole 92A provided in the center, and the upper holding member 95 is opened from the center hole 92A. It flows out into the gap between the upper end of the filter element 92 and the ceiling surface of the accommodating portion 91C through the opening 95A, from which a part is sent to the injector and the remaining part is returned to the urea water tank.
- Such a filter element 92 is replaced with a new filter element after use for a predetermined time.
- the replacement work is performed on the crawler of the lower traveling body 2 by opening the side covers 3B and 3B (FIG. 1) covering the engine room of the upper swing body 3 and the right side of the arrangement space 3A. The specific procedure of the replacement work will be described later. In this replacement work, the resin filter removing tool 10 shown in FIGS. 2 and 3 is used.
- the filter removal tool 10 includes a tool main body 11, and an adjustment member 21 and a protective cover 31 that are detachably attached to the tool main body 11.
- the tool body 11 has a bottomed cylindrical mounting portion 12 screwed around an opening 91A provided in the housing 91, a base end integrated with the mounting portion 12, and a distal end a free end.
- the center of the filter element 92 that is elastically deformable in the radial direction perpendicular to the axial direction of the filter element 92 by the screwing of the mounting part 12 and that is provided in the filter element 92 from the opening 91A with the screwing of the mounting part 12
- An operator grips the insertion portion 13 to be inserted into the hole 92A, the engagement portion 14 provided at the distal end of the insertion portion 13 and engaged with the filter element 92 by a predetermined amount of movement by screwing of the attachment portion 12. And a gripping portion 15 to be provided.
- the mounting portion 12 of the tool body 11 has a female screw portion 12A that is screwed with a male screw portion 91B around the opening 91, and is screwed with the housing 91 by screwing. Further, the attachment portion 12 is provided in a concave cross section that opens upward in the drawing, which is the filter element 92 side accommodated in the housing 91. And the receiving part 12B which receives the filter element 92 remove
- the insertion portion 13 has a columnar portion 13A extending upward from the center of the bottom portion 12C of the mounting portion 12, and a pair of arms having a cross-sectional fan shape extending further upward from the tip surface 13B of the columnar portion 13A. 13C, 13C, and the distal end side of these arm portions 13C is a free end, and the engaging portion 14 is provided at the distal end of the arm portion 13C.
- the pair of arm portions 13C are arranged in parallel and spaced apart from each other along the diameter direction of the distal end surface 13B so as to sandwich the axis AL on the distal end surface 13B of the columnar portion 13A having a circular end surface shape.
- the engaging portion 14 protrudes in a direction orthogonal to the extending direction of the arm portion 13C, and is separated from the opening portion 91A in both end surfaces of the filter element 92 in the housing 91 as shown in FIG. Thus, it engages with an engaged portion 92B provided in the vicinity of the upper end surface. More specifically, the engagement portion 14 has a shape in which the arc side of the tip of the arm portion 13C having a fan-shaped cross section protrudes outward, and the engagement surface 14A that comes into contact with the engaged portion 92B and the protrusion direction. And an inclined surface 14B that is inclined so as to be positioned below.
- the engaged portion 92B is configured as an inner flange around the opening 95A forming the central hole 92A in the holding member 95 of the filter element 92.
- the grip portion 15 has a cylindrical shape with a smaller diameter than the attachment portion 12.
- a plurality of protruding portions 15 ⁇ / b> A that are parallel to the axial direction are provided on the outer peripheral surface of the grip portion 15. These projecting portions 15A prevent slipping and improve the operability of the operator who grips and rotates the grip portion 15.
- the length L along the axial direction from the proximal end to the distal end of the insertion portion 13 provided in the tool main body 11 is the length of the filter element 92 in the axial direction. Longer than l (L ⁇ l). Further, as shown by a two-dot chain line in FIG. 3, a distance generated between the engaging surface 14 ⁇ / b> A of the engaging portion 14 and the engaged portion 92 ⁇ / b> B of the filter element 92 at a position immediately before the mounting portion 12 is screwed. “a” is equal to or shorter than the movable length “b” in the axial direction of the mounting portion 12 by screwing of the mounting portion 12 (b ⁇ a).
- the engaging portion 14 is screwed into the housing 91 and moved to the distance a or more within the range of the movable length b in the axial direction, so that the engaging portion 14 can be securely connected to the engaged portion 92B on the back side. Can be engaged.
- the adjusting member 21 has a columnar shape having a predetermined length.
- the diameter dimension of the adjustment member 21 is the same as the diameter dimension of the columnar portion 13 ⁇ / b> A of the insertion portion 13.
- the length dimension of the adjustment member 21 is shorter than the arm part 13C, and is about 3/4 of the length dimension of the arm part 13C.
- a pair of slits 22 and 22 that are continuous along the axial direction are provided on the outer periphery of the adjustment member 21.
- the slits 22 are provided apart from each other along the diameter direction of the adjustment member 21, and the shape in plan view is a fan shape equal to the cross-sectional shape of the arm portion 13 ⁇ / b> C.
- the adjustment member 21 is inserted between the pair of arm portions 13C in such a manner that the arm portions enter the slits 22 (see FIG. 3). Further, the portions other than the slits 22 of the adjustment member 21 are recessed leaving the flange portions 23 at both ends. However, such a depression is not an essential configuration.
- the protective cover 31 has a cylindrical shape and has a male screw portion 31A on the outer periphery on the lower side.
- the protective cover 31 can be attached to the tool body 11 by the male screw portion 31 ⁇ / b> A being screwed with the female screw portion 12 ⁇ / b> A of the attachment portion 12.
- the protective cover 31 is mounted in a state where the adjustment member 21 is inserted between the arm portions 13 ⁇ / b> C, and is stored as a filter removal tool 10 in the cab 4 or in a predetermined storage place installed in the upper swing body 3.
- the replacement operation of the filter element 92 will be described with reference to FIGS. 2 to 4.
- the filter removal tool 10 stored in the storage location is taken out, and the protective cover 31 is removed from the tool body 11.
- the adjusting member 21 is arranged between the arm portions 13C as it is.
- the cap 93 of the pressure pump 9 is removed. A part of the urea aqueous solution remaining in the accommodating portion 91C is accumulated in the cap 93, and is removed without leakage by removing the cap 93.
- the insertion portion 13 of the tool body 11 is inserted into the center hole 92 ⁇ / b> A of the filter element 92 from the opening portion 91 ⁇ / b> A of the housing 91, and the female screw portion 12 ⁇ / b> A provided in the attachment portion 12 of the tool body 11 is replaced with the male screw of the housing 91. Screwed into the portion 91B. The screwing is continuously performed by the rotation operation of the gripping part 15, and the tool body 11 is moved upward in the axial direction.
- the inner edge of the opening 95 ⁇ / b> A of the holding member 95 constituting the filter element 92 and the inclined surface 14 ⁇ / b> B provided in the engaging portion 14 of the tool body 11 come into contact with each other and are screwed together.
- the pair of arm portions 13C bend in the direction of approaching each other in the radial direction. The bending of the arm portion 13C at this time is used in a state in which the adjustment member 21 is in contact with the tip end surface 13B of the columnar portion 13A, so that the pole protruding above the upper end with the upper end of the adjustment member 21 as a fulcrum is used. It occurs in a short area.
- the filter element 92 When the filter element 92 is detached from the housing 91, it falls into the receiving portion 12 ⁇ / b> B having a concave cross section provided in the mounting portion 12 as shown in FIG.
- the removed filter element 92 contains an aqueous urea solution, but is accommodated in the receiving portion 12B, so that the aqueous urea solution hanging from the filter element 92 does not have to be attached to the operator, and the filter element 92 is installed in the housing 91.
- the aqueous urea solution that scatters when being pulled out from the container, and the aqueous urea solution in the accommodating portion 91C that has accumulated without flowing into the cap 93 can be received by the receiving portion 12B.
- the filter element 92 is shifted to the receiving portion 12B side so that the pair of arm portions 13C protrude from the filter element 92, and the adjustment member 21 (FIGS. 2 and 3) is moved from between the arm portions 13C. Remove it so that it can be removed. Thereafter, the pair of arm portions 13C are bent toward the center side (axis line AL side) so as to be close to each other as indicated by a two-dot chain line by pinching the engaging portion 14 or the like. At this time, since the adjustment member 21 is removed, the arm portion 13C can be easily bent from the base end side with a small force.
- the arm portion 13C is bent, the engaging portions 14 are brought close to each other, and an opening 95A provided in the holding member 95 of the filter element 92 passes through the engaging portion 14 as indicated by a two-dot chain line arrow.
- the filter element 92 is moved and removed from the tool body 11.
- the removed filter element 92 is discarded, and the used filter removal tool 10 is returned to the original storage location.
- the adjustment member 21 has a structure that is used by being attached to and detached from the arm portion 13C.
- the adjustment member 21 is incorporated between the arm portions 13C and moves along the extending direction of the arm portion 13C.
- the elastic modulus of the arm portion 13C may be adjusted by providing it freely.
- a pair of arm portions 13C is provided, but the number of arm portions 13C is not limited to one pair, such as one or three or more.
- the engaging portion 14 is engaged with the engaged portion 92B in the vicinity of the end portion of the filter element 92 on the side away from the opening portion 91A, but in the vicinity of the end portion near the opening portion 91A. Even when engaged with the engaged portion, it is included in the present invention. In this case, it is preferable that the length L from the proximal end to the distal end of the insertion portion 13 is longer than the length l in the axial direction of the filter element 92 by sufficiently securing the depth of the receiving portion 12B.
- the length of the arm portion 13C can be made sufficiently long, and the arm portion 13C protrudes from the end of the filter element 92 by a necessary length in a state where the filter element 92 is dropped into the receiving portion 12B. Therefore, it is possible to easily pinch the engaging portion 14 and attach / detach the adjusting member 21.
- the present invention can be used not only for exchanging a filter of a pressure pump that pumps an aqueous urea solution, but also for exchanging a filter of a fuel pump, or for a filter that handles other arbitrary fluids.
- DESCRIPTION OF SYMBOLS 10 ... Filter removal tool, 12 ... Installation part, 12A ... Female thread part which is a thread part, 13 ... Insertion part, 13C ... Arm part, 14 ... Engagement part, 91 ... Housing, 91A ... Opening part, 92 ... Filter element , 92A ... center hole, 92B ... engaged portion, L, l ... length, a ... distance, b ... movable length.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Exhaust Gas After Treatment (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
なお、特許文献2,3には、フィルタエレメント交換時に漏れ出すオイル等を受ける構造のフィルタ取外工具が記載されている。このようなフィルタ取外工具によれば、作業者にオイルが降りかかったりするのを抑制可能である。
また、何らかの理由でフィルタエレメントのみを交換したい場合には、特殊工具を用いてキャップからフィルタエレメントを外す必要があり、作業が煩雑である。
そして、本発明では、開口部を塞ぐために用いられるキャップは、フィルタエレメントとは別体とされ、フィルタエレメントと同様、例えば圧送ポンプ等の一部品として構成可能である。このため、キャップをフィルタエレメントと一緒に交換する必要がなく、フィルタエレメントの交換後に繰り返し使用できる。
本発明によれば、フィルタエレメントの軸線方向の長さに対するフィルタ取外工具の挿入部の長さ、フィルタ取外における係合部の係合面とフィルタエレメントの被係合部との距離、および取付部の螺合による移動可能長さを、それぞれ適正に設定することで、係合部をフィルタエレメントの奥側の被係合部に確実に係合させることができる。
本発明によれば、フィルタ取外工具の係合部をフィルタエレメントに係合させる時点、および係合部がフィルタエレメントに係合している状態では、調整部材により挿入部のたわみ部分を短くして弾性率が大きくなるように調整し、挿入部を撓み難くする。こうすることで、取付部の螺合解除操作によりフィルタエレメントをハウジング内から引き出すときなど、係合部に負荷がかかることで当該係合部が撓もうとしても容易に撓む心配がなく、係合部がフィルタエレメントから不意に外れるのを防止でき、フィルタエレメントをハウジング内から確実に引き出すことができる。
そして、フィルタエレメントをハウジング内から引き出した後、当該フィルタエレメントをフィルタ取外工具から外す場合には、調整部材を除くこと等により挿入部のたわみ部分を長く、かつ弾性率が小さくなるように調整し、挿入部を撓み易くする。こうすることで、作業者でも係合部をつまんで挿入部を軸線方向に対して容易に弾性変形させることができ、挿入部を弾性変形させた状態でフィルタエレメントをフィルタ取外工具から無理なく外すことができる。
本発明によれば、取付部全体が凹状に設けられるなど、受け部を有する構造であるから、フィルタを取り外した際に漏れ出る流体等を受け部で受けることができ、流体等が作業者の手に降りかかったり、周囲に飛散したりするのを防止できる。さらに、受け部の深さによっては、ハウジング内から外れたフィルタエレメントを受け部に落とし込ませておくことができ、フィルタエレメントの中央孔の端部から係合部を露出させることができる。このため、フィルタエレメントをフィルタ取外工具から外す場合において、露出した係合部を容易につまんで挿入部を径方向弾性変形させることができる。
本発明によれば、フィルタ取外工具の係合部を、フィルタエレメントの中でもハウジングの開口部から離間して位置する端面近傍の被係合部と係合するように設けるので、係合部が設けられる挿入部を、撓み易さを考慮した所定長さに設けることができるとともに、フィルタエレメントの中央孔から係合部の先端を露出させ易くでき、簡単につまめるようにできる。なお、挿入部を撓み難くして係合部と被係合部との係合状態を維持させるためには、前述した調整部材を用いて弾性率を調整すればよい。
本発明によれば、上述した作用効果を同様に得ることができる。
図1には、フィルタ取外工具にて外されるフィルタエレメント92の使用状況が示されている。フィルタエレメント92は、選択還元触媒脱硝装置に尿素水溶液を供給する圧送ポンプ9内に収容されている。選択還元触媒脱硝装置は、排気ガス後処理装置として、建設機械である油圧ショベル1に搭載されている。また、図1は、油圧ショベル1を後方側から前方側に向かって見た図である。
ここで、油圧ショベル1は、クローラ式の下部走行体2と、下部走行体2の上部に旋回自在に設けられた上部旋回体3と、上部旋回体3の左前方に設けられたキャブ4と、キャブ4の右側に設けられた作業機5とを備えている。このうちの作業機5は、基端が上部旋回体3に回動自在に連結されたブーム6、基端がブーム6の先端に回動自在に連結されたアーム7、およびアーム7の先端に回動自在に連結されたバケット8とを有している。これらのブーム6、アーム7、およびバケット8はそれぞれ、油圧アクチュエータであるブームシリンダ6A、アームシリンダ7A、および図示略のバケットシリンダで回動駆動される。
図2および図3において、フィルタ取外工具10は、工具本体11と、この工具本体11に対してそれぞれ着脱自在に設けられた調整部材21および保護カバー31とを備えている。
なお、被係合部92Bは、フィルタエレメント92の保持部材95において、中央孔92Aを形成する開口95A回りの内フランジとして構成されている。
以下には、図2ないし図4を参照し、フィルタエレメント92の交換作業について説明する。
先ず、保管場所に保管されているフィルタ取外工具10を取り出し、工具本体11から保護カバー31を外す。調整部材21は、そのまま腕部13C間に配置しておく。
一方、圧送ポンプ9のキャップ93を外す。収容部91C内に残留していた尿素水溶液の一部は、キャップ93に溜まっており、キャップ93を外すことで漏れることなく取り除かれる。
以上により、フィルタエレメント92の交換作業を終了する。
例えば、前記実施形態では、調整部材21は腕部13Cに対して着脱させることで用いられる構造であったが、腕部13C間に組み込まれる構造とし、腕部13Cの延設方向に沿って移動自在に設けることで、腕部13Cの弾性率を調整するようにしてもよい。
この場合、受け部12Bの深さを十分に確保することで、挿入部13の基端から先端までの長さLを、フィルタエレメント92の軸線方向の長さl以上に長くすることが好ましい。こうすることで、腕部13Cの長さを十分に長くできるうえ、フィルタエレメント92が受け部12Bに落とし込まれた状態で、フィルタエレメント92の端部から腕部13Cを必要な長さだけ突出させることができ、係合部14をつまんだり、調整部材21を着脱したりするのを容易にできる。
Claims (6)
- ハウジングに設けられた開口部を通して当該ハウジング内に収容された筒状のフィルタエレメントを取り外すフィルタ取外工具であって、
前記ハウジングの前記開口部回りに螺合されるねじ部が設けられた取付部と、
基端が前記取付部に一体とされ、先端が自由端とされているとともに、当該取付部の螺合により前記フィルタエレメントの軸線方向に沿って移動することで当該軸線方向に対して直交する径方向に弾性変形可能、かつ当該取付部の螺合に伴って前記開口部から前記フィルタエレメントに設けられた中央孔内に挿入される挿入部と、
前記挿入部の先端に設けられ、前記取付部の螺合による所定の移動量により前記フィルタエレメントに係合する係合部とを備えている
ことを特徴とするフィルタ取外工具。 - 請求項1に記載のフィルタ取外工具において、
前記挿入部の長さは、前記フィルタエレメントの軸線方向の長さ以上に長く、
前記取付部の螺合直前の位置において、前記係合部の係合面と前記フィルタエレメントの両端面のうちの前記開口部から離間した奥側の端面近傍に設けられた被係合部との間に生じる距離は、前記取付部の螺合による当該取付部の前記軸線方向の移動可能長さ以下である
ことを特徴とするフィルタ取外工具。 - 請求項1または請求項2に記載のフィルタ取外工具において、
前記挿入部に着脱自在に装着されて当該挿入部の弾性率を調整する調整部材を備えている
ことを特徴とするフィルタ取外工具。 - 請求項1ないし請求項3のいずれかに記載のフィルタ取外工具において、
前記取付部は、前記フィルタエレメントで濾される流体を受ける受け部を有している
ことを特徴とするフィルタ取外工具。 - 請求項1ないし請求項4のいずれかに記載のフィルタ取外工具において、
前記係合部は、前記フィルタエレメントの両端面のうち、前記開口部から離間して位置することとなる端面近傍に設けられた被係合部と係合する
ことを特徴とするフィルタ取外工具。 - ハウジングに設けられた開口部を通して当該ハウジング内に収容された筒状のフィルタエレメントを取り外すフィルタ取外工具であって、
前記ハウジングの前記開口部回りに螺合されるねじ部、および前記フィルタエレメントで濾される流体を受ける受け部を有した取付部と、
基端が前記取付部に一体とされ、先端が自由端とされているとともに、当該取付部の螺合により前記フィルタエレメントの軸線方向に沿って移動することで当該軸線方向に対して直交する径方向に弾性変形可能、かつ当該取付部の螺合に伴って前記開口部から前記フィルタエレメントに設けられた中央孔内に挿入される複数の腕部を有した挿入部と、
前記挿入部の先端に設けられ、前記取付部の螺合による所定の移動量により前記フィルタエレメントに係合する係合部と、
前記挿入部の前記腕部に着脱自在に装着されて当該腕部の弾性率を調整する調整部材とを備え、
前記挿入部の長さは、前記フィルタエレメントの軸線方向の長さ以上に長く、
前記取付部の螺合直前の位置において、前記係合部の係合面と前記フィルタエレメントの両端面のうちの前記開口部から離間した奥側の端面近傍に設けられた被係合部との間に生じる距離は、前記取付部の螺合による当該取付部の前記軸線方向の移動可能長さ以下である
ことを特徴とするフィルタ取外工具。
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KR1020147016740A KR20150088180A (ko) | 2013-12-25 | 2013-12-25 | 필터 분리 공구 |
DE112013000309.0T DE112013000309B3 (de) | 2013-12-25 | 2013-12-25 | Filterentferner |
US14/371,430 US9517552B2 (en) | 2013-12-25 | 2013-12-25 | Filter remover |
PCT/JP2013/084761 WO2015097799A1 (ja) | 2013-12-25 | 2013-12-25 | フィルタ取外工具 |
CN201380004291.5A CN104582906B (zh) | 2013-12-25 | 过滤器拆卸工具 | |
JP2014517289A JP5571865B1 (ja) | 2013-12-25 | 2013-12-25 | フィルタ取外工具 |
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DE102015207565B4 (de) * | 2015-04-24 | 2020-06-18 | Robert Bosch Gmbh | Filterelement, Flüssigkeitsfilter und Anordnung |
DE102017205237B4 (de) * | 2017-03-28 | 2022-02-17 | Robert Bosch Gmbh | Demontagewerkzeug für einen Filtereinsatz eines Flüssigkeitsfilters |
DE102017205242B4 (de) | 2017-03-28 | 2022-02-17 | Robert Bosch Gmbh | Demontagewerkzeug für einen Filtereinsatz eines Flüssigkeitsfilters |
GB2593427B (en) * | 2019-12-16 | 2022-04-27 | Delphi Tech Ip Ltd | Kit for replacing a jet filter arranged in an engine fuel pump |
US11975428B2 (en) | 2021-08-24 | 2024-05-07 | Whirlpool Corporation | Assembly tool |
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US20150174746A1 (en) | 2015-06-25 |
KR20150088180A (ko) | 2015-07-31 |
JPWO2015097799A1 (ja) | 2017-03-23 |
US9517552B2 (en) | 2016-12-13 |
JP5571865B1 (ja) | 2014-08-13 |
CN104582906A (zh) | 2015-04-29 |
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