CN109281895A - Hydraulic oil tank and return oil filtering device thereof - Google Patents
Hydraulic oil tank and return oil filtering device thereof Download PDFInfo
- Publication number
- CN109281895A CN109281895A CN201811385214.XA CN201811385214A CN109281895A CN 109281895 A CN109281895 A CN 109281895A CN 201811385214 A CN201811385214 A CN 201811385214A CN 109281895 A CN109281895 A CN 109281895A
- Authority
- CN
- China
- Prior art keywords
- filter core
- bottom wall
- hydraulic oil
- oil
- filtering device
- 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.)
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Links
- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 66
- 239000003921 oil Substances 0.000 title claims abstract description 46
- 238000001914 filtration Methods 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 46
- 230000002093 peripheral effect Effects 0.000 claims description 19
- 230000003749 cleanliness Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a hydraulic system component, and discloses a hydraulic oil tank and an oil return filtering device thereof, wherein the oil return filtering device comprises: a tub (1), the tub (1) comprising a bottom wall (11) with an oil return (13); a filter element (2); -a cartridge (4), the cartridge (4) comprising a connection (42), a seal (43) and a support (41), wherein the cartridge (2) is axially movable between a first position, in which the seal (43) is separated from the bottom wall (11), and a second position; in the second position, the seal (43) engages the bottom wall (11) and seals the oil return opening (13). Through above-mentioned technical scheme, the case can seal the oil return opening when the filter core is taken out, avoids not filterable hydraulic oil to pass through the oil return opening and discharges, can guarantee the cleanliness factor of hydraulic oil among the hydraulic system, improves the reliability of hydraulic system operation.
Description
Technical field
The present invention relates to hydraulic system components, and in particular, to a kind of oil-returning filtering device of hydraulic oil container, and be related to
A kind of hydraulic oil container.
Background technique
For hydraulic oil container for storing hydraulic oil, the hydraulic oil returned from one of hydraulic circuit can enter hydraulic oil
Then case enters back into other hydraulic circuits as needed.
In order to guarantee that hydraulic system is more reliably run, filter device is provided in hydraulic oil container, with to returning to hydraulic oil
Hydraulic oil in case is filtered.Specifically, hydraulic oil container includes hydraulic oil filter and clean hydraulic fluid chamber body.It is hydraulic
Fuel tank Filtrierapparatus includes side wall and the bottom wall with oil return opening, and the tubulose filter core around oil return opening is provided on bottom wall, is entered
The hydraulic oil of hydraulic oil container is first between filter core and side wall, and hydraulic oil passes through filter core and enters in filter core under pressure
Filtering is completed, then across oil return opening, into hydraulic oil container cleaning oil liquid cavity, with hydraulic tube to be again introduced into portion space
Road.
When need dismantle, replacement filter core when, filter core is separated with bottom wall, into hydraulic oil container hydraulic oil without filtering
It directly reaches at oil return opening, causes the cleanliness factor of hydraulic oil to decline, bring security risk to hydraulic system.
Summary of the invention
The object of the present invention is to provide a kind of filter device of hydraulic oil container, hydraulic oil can be without when solving to dismantle filter core
The problem of filtering and passing through filter device.
To achieve the goals above, the present invention provides a kind of oil-returning filtering device of hydraulic oil container, wherein the oil return
Filtering device includes:
Staving, the staving include the bottom wall with oil return opening, and the inner surface of the bottom wall is connected with around the oil return
The positioning pipe of mouth；
The first end of the filter core of tubulose, the filter core can be set on the positioning pipe, on the internal perisporium of the filter core
It is provided with stop part；
Axially movable spool, the spool include connector, sealing element and supporting element, and the sealing element is located at described
The outside of bottom wall and the first end for being connected to the connector, the supporting element are connected to the second end and direction of the connector
The filter core radially extends, and the stop part can compress the supporting element towards the bottom wall,
Wherein, the filter core can move axially between the first position and the second position, described in the first position
The first end of filter core presses on the bottom wall and is hermetically sheathed on the positioning pipe, and the stop part supports the supporting element
Pressure is so that the sealing element is separated with the bottom wall；In the second position, the first end of the filter core and the bottom wall point
From and be hermetically set on the positioning pipe, the sealing element is engaged in the bottom wall and seals the oil return opening.
Preferably, the sealing element is towards being provided with the first sealing ring, first sealing ring on the surface of the bottom wall
It being capable of outer surface and the circular oil return opening of the palette in the bottom wall.
Preferably, the oil-returning filtering device includes axial telescopic elastic component, and the elastic component is along axial first
End presses on one end far from the bottom wall of the positioning pipe, and the elastic component presses on the support along axial second end
Part, the elastic component is along supporting element described in the axial direction bias far from the bottom wall.
Preferably, the spool includes the support tube for being connected to the supporting element and being located in the filter core, and described
The outer peripheral surface of support tube and the inner peripheral surface of the filter core are spaced each other, and the elastic component is inserted into the support tube and radial support
The inner peripheral surface of the support tube.
Preferably, the positioning pipe includes the second pipeline section of the first pipeline section and the separate bottom wall close to the bottom wall,
The outer diameter of second pipeline section is less than the outer diameter of first pipeline section, the junction shape of first pipeline section and second pipeline section
At step surface, the support tube can be set in second pipe section exterior and move axially.
Preferably, the first end of the filter core is provided with support ring, and annular groove, institute are provided on the inner peripheral surface of the support ring
It states and is provided with the second sealing ring in annular groove.
Preferably, the stop part includes the annular slab for being connected to the inner peripheral surface of the filter core, and the annular slab can support
It is pressed on the supporting element.
Preferably, the supporting element is the support plate for being provided with through flow hole.
Preferably, the staving includes the side wall for being connected to the bottom wall and being located at the filter core radial outside, the side
Wall is spaced each other with the filter core.
In addition, the present invention also provides a kind of hydraulic oil containers, wherein be provided with described in above scheme in the hydraulic oil container
Hydraulic oil container oil-returning filtering device.
Through the above technical solutions, spool can seal oil return opening when filter core is extracted out, filtered hydraulic oil is avoided
It is discharged by oil return opening, it is ensured that the cleanliness of hydraulic oil in hydraulic system improves hydraulic system reliability of operation.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the cross-sectional view of the oil-returning filtering device of hydraulic oil container described in embodiment according to the present invention, wherein filter core
In first position；
Fig. 2 is the cross-sectional view of the oil-returning filtering device of hydraulic oil container described in embodiment according to the present invention, wherein filter core
In the second position；
Fig. 3 is the cross-sectional view of the oil-returning filtering device of hydraulic oil container described in embodiment according to the present invention, wherein filter core
It is removed；
Fig. 4 is the structural schematic diagram of support plate described in embodiment according to the present invention.
Description of symbols
1 staving, 2 filter core
3 stop part, 4 spool
5 positioning pipe, 6 elastic component
7 first sealing ring, 8 support ring
9 second sealing rings
11 bottom wall, 12 side wall
13 oil return openings
41 supporting element, 42 connector
43 sealing element, 44 support tube
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of oil-returning filtering devices of hydraulic oil container, wherein the oil-returning filtering device includes:
Staving 1, the staving 1 include the bottom wall 11 with oil return opening 13, and the inner surface of the bottom wall 11 is connected with circular
The positioning pipe 5 of the oil return opening 13；
The filter core 2 of tubulose, the first end of the filter core 2 can be set on the positioning pipe 5, the inner circumferential of the filter core 2
Stop part 3 is provided on wall；
Axially movable spool 4, the spool 4 include connector 42, sealing element 43 and supporting element 41, the sealing element
43 are located at the outside of the bottom wall 11 and are connected to the first end of the connector 42, and the supporting element 41 is connected to the connection
The second end of part 42 is simultaneously radially extended towards the filter core 2, and the stop part 3 can compress the support towards the bottom wall 11
Part 41,
Wherein, the filter core 2 can move axially between the first position and the second position, in the first position, institute
The first end for stating filter core 2 presses on the bottom wall 11 and is hermetically sheathed on the positioning pipe 5, and the stop part 3 will be described
Supporting element 41 compresses that the sealing element 43 is separated with the bottom wall 11；In the second position, the first of the filter core 2
End separates with the bottom wall 11 and is hermetically set on the positioning pipe 5, and the sealing element 43 is engaged in the bottom wall 11 simultaneously
Seal the oil return opening 13.
In the present solution, oil return hole can be passed through by being located at the hydraulic oil of 11 inside (upside of bottom wall 11 shown in Fig. 1) of bottom wall
13 reach the outside (downside of bottom wall 11 shown in Fig. 1) of bottom wall 11, and hydraulic oil is before entering oil return hole 13, from the filter core of tubulose
2 outside enters inside, realizes filtering.
Positioning pipe 5 is connected to the inside of bottom wall 11, and around oil return hole 13, positioning pipe 5 provides for the axial movement of filter core 2
Supporting role, and when guaranteeing that filter core 2 moves between the first position and the second position, it is kept between positioning pipe 5 and filter core 2
Sealing state, the hydraulic oil on the outside of the two cannot reach in oil return opening 13 around filtration core 2.
Positioning pipe 5 and filter core 2 are tubular structure, the tubular structure can for round tube, elliptical tube, rectangle, triangular pipe etc.,
Certainly, positioning pipe 5 can be similar to the cross sectional shape of filter core 2.Flange can be set in one end that positioning pipe 5 is connected to bottom wall 11,
Filter core 2 can press on flange, this can be understood as filter core 2 and is engaged in bottom wall 11 indirectly, also belong to the guarantor of this programme
Protect range.
In the first position, as shown in Figure 1, the first end of filter core 2 can be engaged in 11 inner surface of bottom wall (therebetween
There may be other components, but form sealing state therebetween), the as normal installed position of filter core 2；In the second
It sets, as shown in Fig. 2, filter core 2 is spaced relative to bottom wall 11, i.e., moves axially a distance, while backstop relative to first position
Part 3 is also mobile axially away from bottom wall 11, allows spool 4 mobile axially away from bottom wall 11, and sealing element 43 fits to 11 outside of bottom wall
To seal oil return opening 13, hydraulic oil stops through oil return opening 13, and particularly, first end and the positioning pipe 5 of filter core 2 keep sealing to connect
It closes, hydraulic oil cannot reach oil return opening 13 around filtration core 2, and filter core 2 is now in crossover position.
In the second position, filter core 2 can continue to move axially far from bottom wall 11 and reach filter core 2 and positioning pipe 5 that
This is detached from the position of sealing, so as to further dismantle filter core 2, i.e. removed position, continues in filter core 2 from the second position
When mobile far from bottom wall 11, hydraulic oil cannot be by oil return opening 13, to avoid unfiltered hydraulic oil discharge oil return opening 13.
The axial movement of filter core 2 can be realized by the actuator in hydraulic oil container, such as oil cylinder, cylinder, motor etc., together
When, the axial movement of spool 4 can also be realized by actuator, such as oil cylinder, cylinder, motor etc..Filter core 2 can also be from described
Removed position is moved axially to the second position, and further moves to the first position, realizes the installation of filter core 2,
During this, stop part 3 can push spool 4 to move axially, so that sealing element 43 is detached from bottom wall 11, and open oil return opening
13。
To sum up, filter core 2 can move between normal installed position, crossover position and removed position, in normal mounting position
When setting with crossover position, filter core 2 and positioning pipe 5 keep being tightly connected, when especially reaching crossover position from normal installed position,
Sealing element 43 can move to seal oil return opening 13, convenient for further disassembly filter core 2.
In addition, the sealing element 43 is towards being provided with the first sealing ring 7, first sealing on the surface of the bottom wall 11
Circle 7 being capable of outer surface and the circular oil return opening 13 of the palette in the bottom wall 11.Sealing element 43 can be shaped generally as
It is parallel to the plate-like of bottom wall 11, the outer diameter of sealing element 43 is greater than the bore of oil return opening 13, pastes so as to surround oil return opening 13
Together in the outer surface of bottom wall 11, the sealing performance of sealing element 43 Yu bottom wall 11 is can be improved in the first sealing ring 7.
In addition, the oil-returning filtering device includes axial telescopic elastic component 6, the elastic component 6 is along axial first
End presses on one end far from the bottom wall 11 of the positioning pipe 5, and the elastic component 6 presses on described along axial second end
Supporting element 41, the elastic component 6 is along supporting element 41 described in the axial direction bias far from the bottom wall 11.Elastic component 6 can mention
It is identical from first position to the mobile direction in the second position as filter core 2 for pushing elastic force elastic force direction of the axial movement of spool 4,
To when filter core 2 is mobile to the second position from the first position, spool 4 in the presence of a tensile force can " automatic "
It is mobile, so that sealing element 43 is mobile towards bottom wall 11, blocked with " in time " (before filter core 2 and positioning pipe 5 are detached from sealing)
Oil return opening 13.Elastic component 6 can be spring or other flexible components.
In addition, the spool 4 includes the support tube 44 for being connected to the supporting element 41 and being located in the filter core 2, and
The outer peripheral surface of the support tube 44 and the inner peripheral surface of the filter core 2 are spaced each other, and the elastic component 6 is inserted into the support tube 44
And the inner peripheral surface of support tube 44 described in radial support, to avoid 44 radial deflection of support tube.The outer peripheral surface of support tube 44 with
The inner peripheral surface of filter core 2 keeps interval, so that support tube 44 can be moved axially in relation to each other with filter core 2 and not limited mutually, support
Pipe 44 is connected to connector 42 by supporting element 41, and support tube 44 extends from connector 42 towards bottom wall 11, avoids and stop part 3
It interferes with each other.Elastic component 6 can stretch along axial, and have radial rigidity, can provide radial support for support tube 44, protect
Radial deflection will not occur for card support tube 44, to guarantee the stable axial movement of spool 4, for example, elastic component 6 can be spiral
Spring, the periphery of spring fit in the inner peripheral surface of support tube 44, by the radial rigidity of spring, support tube 44 are remained and are determined
Position pipe 5 is coaxial.
Specifically, the positioning pipe 5 includes the first pipeline section close to the bottom wall 11 and second far from the bottom wall 11
Pipeline section, the outer diameter of second pipeline section are less than the outer diameter of first pipeline section, the company of first pipeline section and second pipeline section
The place of connecing forms step surface, and the support tube 44 can be set in second pipe section exterior and move axially.As shown in Figure 1, Figure 2, Fig. 3
Shown, one section of outer diameter on 5 top of positioning pipe is smaller, as described second pipeline section, and larger one section of outer diameter of lower part is described the
One pipeline section, first pipeline section is slidingly sealed with filter core 2 to be engaged, when filter core 2 slides into second pipeline section, filter core 2 and fixed
Position pipe 5 is detached from sealing.Upward step surface is formed between second pipeline section and the first pipeline section, can be used for carrying 6 (spiral of elastic component
Spring), and support tube 44 can be set on the second pipeline section (when filter core 2 is located at the first position), avoid support tube 44
Movement interference is formed with positioning pipe 5, and can be moved axially relative to the second pipeline section.
In addition, the first end of the filter core 2 is provided with support ring 8, it is provided with annular groove on the inner peripheral surface of the support ring 8,
The second sealing ring 9 is provided in the annular groove.Support ring 8 is the rigid structure without filtering function, filter core 2 easy to support
First end realizes the sealing engagement between filter core 2 and positioning pipe 5, and avoids filter core 2 from deforming and influence sealing, the second sealing
Sealing effect can be improved in circle 9.
Specifically, the stop part 3 includes the annular slab for being connected to the inner peripheral surface of the filter core 2, and the annular slab can
It presses on the supporting element 41.As depicted in figs. 1 and 2, stop part 3 include fit in filter core 2 inner peripheral surface tube-like piece with
And annular slab described above, section is generally L-shaped, and wherein for tube-like piece convenient for connecting with filter core 2, annular slab can play backstop
Effect pushes supporting element 41 mobile towards bottom wall.Certainly, stop part 3 or other forms, in general, stop part 3 is big
Cause to be structure radially inwardly projecting from the inner surface of filter core 2, and the elastic force of elastic component 6 can be overcome and towards bottom wall 11
It pushes supporting element 41 (namely spool 4).
Specifically, the supporting element 41 is the support plate for being provided with through flow hole.Refering to what is shown in Fig. 4, supporting element 41 is substantially
Plate-like, center is connected to connector 42 (can be connecting rod), and forms multiple through-holes to allow hydraulic oil to pass through.At it
In his embodiment, supporting element 41 can be the support arm radially extended, and stop part 3 can be outside in the diameter of support arm with backstop
End, or can be multiple fanning strips extend radially outwardly from connector 42 and circumferentially spaced.
In addition, the staving 1 includes the side wall 12 for being connected to the bottom wall 11 and being located at 2 radial outside of filter core, institute
Side wall 12 is stated to be spaced each other with the filter core 2.As depicted in figs. 1 and 2, side wall 12 and filter core 2 keep being spaced, filter core 2 and side wall
For storing unfiltered hydraulic oil, unfiltered hydraulic oil initially enters this space, passes through filter core 2 in space between 12
Enter in filter core 2 after filtering, into positioning pipe 5 and by being reached outside staving 1 after oil return opening 13.
With reference to Fig. 1, Fig. 2, Fig. 3, the oil-returning filtering device only shows the structure of lower part, 2 top of staving 1 and filter core
Structure do not show, it will be apparent to a skilled person that it is side wall 12 that hydraulic oil, which enters the position reached after staving 1,
It between filter core 2, is rather than directly into inside filter core 2, and the actuator of driving filter core 2 can be set in top, it can be with
The actuator of driving spool 4 is set.
In addition, the present invention also provides a kind of hydraulic oil containers, wherein be provided with described in above scheme in the hydraulic oil container
Hydraulic oil container oil-returning filtering device.Hydraulic oil into hydraulic oil container can be filtered by the oil-returning filtering device, from
The hydraulic oil that oil return opening 13 exports can be further output to outside hydraulic oil container for using.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of oil-returning filtering device of hydraulic oil container, which is characterized in that the oil-returning filtering device includes:
Staving (1), the staving (1) include the bottom wall (11) with oil return opening (13), the inner surface connection of the bottom wall (11)
There is the positioning pipe (5) around the oil return opening (13)；
The first end of the filter core (2) of tubulose, the filter core (2) can be set on the positioning pipe (5), the filter core (2)
Stop part (3) are provided on internal perisporium；
Axially movable spool (4), the spool (4) include connector (42), sealing element (43) and supporting element (41), described
Sealing element (43) is located at the outside of the bottom wall (11) and is connected to the first end of the connector (42), the supporting element (41)
It is connected to the second end of the connector (42) and is radially extended towards the filter core (2), the stop part (3) can be towards institute
It states bottom wall (11) and compresses the supporting element (41),
Wherein, the filter core (2) can move axially between the first position and the second position, described in the first position
The first end of filter core (2) presses on the bottom wall (11) and is hermetically sheathed on the positioning pipe (5), the stop part (3)
The supporting element (41) is compressed to separate the sealing element (43) with the bottom wall (11)；In the second position, institute
It states the first end of filter core (2) and the bottom wall (11) is separated and is hermetically set on the positioning pipe (5), the sealing element
(43) it is engaged in the bottom wall (11) and seals the oil return opening (13).
2. the oil-returning filtering device of hydraulic oil container according to claim 1, which is characterized in that sealing element (43) direction
Be provided with the first sealing ring (7) on the surface of the bottom wall (11), first sealing ring (7) can palette in the bottom
The outer surface of wall (11) simultaneously surround the oil return opening (13).
3. the oil-returning filtering device of hydraulic oil container according to claim 1, which is characterized in that the oil-returning filtering device packet
Axial telescopic elastic component (6) is included, the elastic component (6) presses on the separate of the positioning pipe (5) along axial first end
One end of the bottom wall (11), the elastic component (6) press on the supporting element (41), the elastic component along axial second end
(6) along supporting element (41) described in the axial direction bias far from the bottom wall (11).
4. the oil-returning filtering device of hydraulic oil container according to claim 3, which is characterized in that the spool (4) includes connecting
The support tube (44) for being connected to the supporting element (41) and being located in the filter core (2), and the outer peripheral surface of the support tube (44)
It is spaced each other with the inner peripheral surface of the filter core (2), the elastic component (6) is inserted into the support tube (44) and described in radial support
The inner peripheral surface of support tube (44).
5. the oil-returning filtering device of hydraulic oil container according to claim 4, which is characterized in that the positioning pipe (5) includes
The first pipeline section close to the bottom wall (11) and the second pipeline section far from the bottom wall (11), the outer diameter of second pipeline section are less than
The junction of the outer diameter of first pipeline section, first pipeline section and second pipeline section forms step surface, the support tube
(44) second pipe section exterior can be set in and moved axially.
6. the oil-returning filtering device of hydraulic oil container according to claim 1, which is characterized in that the first of the filter core (2)
End is provided with support ring (8), is provided with annular groove on the inner peripheral surface of the support ring (8), the second sealing is provided in the annular groove
It encloses (9).
7. the oil-returning filtering device of hydraulic oil container according to claim 1, which is characterized in that the stop part (3) includes
It is connected to the annular slab of the inner peripheral surface of the filter core (2), the annular slab can press on the supporting element (41).
8. the oil-returning filtering device of hydraulic oil container according to claim 1, which is characterized in that the supporting element (41) is to set
It is equipped with the support plate of through flow hole.
9. the oil-returning filtering device of hydraulic oil container described in any one of -8 according to claim 1, which is characterized in that the bucket
Body (1) include be connected to the bottom wall (11) and be located at the filter core (2) radial outside side wall (12), the side wall (12) with
The filter core (2) is spaced each other.
10. a kind of hydraulic oil container, which is characterized in that be provided in the hydraulic oil container described in any one of claim 1-9
Hydraulic oil container oil-returning filtering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385214.XA CN109281895B (en) | 2018-11-20 | 2018-11-20 | Hydraulic oil tank and return oil filtering device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811385214.XA CN109281895B (en) | 2018-11-20 | 2018-11-20 | Hydraulic oil tank and return oil filtering device thereof |
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| CN109281895A true CN109281895A (en) | 2019-01-29 |
| CN109281895B CN109281895B (en) | 2019-07-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111520376A (en) * | 2020-04-30 | 2020-08-11 | 徐州中液过滤技术有限公司 | Intelligent precise oil filtering device of hydraulic system |
| CN111828126A (en) * | 2020-06-05 | 2020-10-27 | 湖南罗佑发动机部件有限公司 | Engine oil circuit structure and vehicle |
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| CN203214491U (en) * | 2013-03-26 | 2013-09-25 | 三一重机有限公司 | Oil return filter device, hydraulic oil box and engineering machine |
| CN105156373A (en) * | 2015-08-26 | 2015-12-16 | 成都成发科能动力工程有限公司 | High-level oil tank with pressure and low oil supply pressure losses |
| WO2017073259A1 (en) * | 2015-10-26 | 2017-05-04 | ヤマシンフィルタ株式会社 | Return filter |
| WO2017204697A1 (en) * | 2016-05-26 | 2017-11-30 | Thordab Industri Innovation Ab | Air drying device |
| CN205991037U (en) * | 2016-08-11 | 2017-03-01 | 广西柳工机械股份有限公司 | There is the hydraulic oil container of side-mounted airtight oil back chamber |
| CN206754019U (en) * | 2017-05-09 | 2017-12-15 | 安徽合力股份有限公司 | A kind of new-type loader hydraulic fuel tank |
| CN108105172A (en) * | 2017-12-21 | 2018-06-01 | 柳工常州机械有限公司 | Hydraulic oil container oil-returning filtering device |
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| CN111520376A (en) * | 2020-04-30 | 2020-08-11 | 徐州中液过滤技术有限公司 | Intelligent precise oil filtering device of hydraulic system |
| CN111520376B (en) * | 2020-04-30 | 2022-06-28 | 徐州中液过滤技术有限公司 | Intelligent precise oil filtering device of hydraulic system |
| CN111828126A (en) * | 2020-06-05 | 2020-10-27 | 湖南罗佑发动机部件有限公司 | Engine oil circuit structure and vehicle |
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