CN103867537B - Return filter and the method filtering fluid thereof - Google Patents
Return filter and the method filtering fluid thereof Download PDFInfo
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- CN103867537B CN103867537B CN201410105940.7A CN201410105940A CN103867537B CN 103867537 B CN103867537 B CN 103867537B CN 201410105940 A CN201410105940 A CN 201410105940A CN 103867537 B CN103867537 B CN 103867537B
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- filter
- exoskeletal
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- filter core
- pass valve
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Abstract
The present invention is about a kind of type return filter and the method for filtration fluid thereof, including filter cover, filter and filter cylinder, described filter is between described filter cover and filter cylinder, exoskeletal filter core it is provided with below the inwall of described filter cylinder, the upper end of described exoskeletal filter core is provided with a by-passing valve, and the center of described by-passing valve and exoskeletal filter core is provided with a bar magnet.During use, fluid enters filter from filter opening part, and flows downward along the endoporus of by-pass valve body and enter the inner chamber of exoskeletal filter core, and the most of metallic particles in fluid is adsorbed by bar magnet, completes the first of fluid and heavily purifies；Then fluid is by the filtration of exoskeletal filter core, eventually passes through the hole on filter cylinder, enters in container.It provides the benefit that: smart structural design, improves business efficiency, strengthens environmental protection；Fluid, when changing filter core and stream crossed by by-passing valve, is intercepted at the pollutant within filter core and will not flow back to container, improve the service life of equipment.
Description
Technical field
The invention belongs to art of filters, specifically, be about a kind of return filter and filtration thereof
The method of fluid.
Background technology
In hydraulic test and hydraulic system, the purity level of fluid is for the functional reliability of hydraulic test
Important impact is all had with the life-span.Therefore keep the cleaning of fluid and improve the pollution situation of fluid, right
For hydraulic system extremely important.At present, in Fluid-transmission or transmitting procedure, often it is provided with
Return filter, for filtering the pollutant in fluid, makes the fluid flowing back in container keep cleaning.
Existing return filter, mainly has two kinds, the most as depicted in figs. 1 and 2.Reality in figure
Heart arrow represents the oil of filtered, and hollow arrow represents the oil after filter element filtering；Big in figure
Arrow represents fluid flow trace when filter core normal filtration, and small arrow represents fluid after filter core blocking
Flow trace through by-passing valve.
As it is shown in figure 1, be existing a kind of return filter, including filter core and filter cylinder 1, described filter core
Including filter material 2, inner frame 3 and by-passing valve 4.Described filter material 2, inner frame 3 and by-passing valve 4 are fixed
Link together.In running, the oil of part filtered and pollutant are deposited in filter material 2 and filter
Between cylinder 1.This return filter, owing to fluid is internally to be flowed by outside filter core, is changing filter
Have a serious problem during core, after filter core is drawn out of, be deposited in filter material 2 and filter cylinder 1 it
Between the oil not filtered and pollutant inevitably come back in fuel tank, severe contamination fluid,
This all has important impact to functional reliability and the life-span of the equipment in hydraulic system.On the other hand,
Existing filter material 2 can not be used repeatedly, inner frame 3 and by-passing valve 4 can with Reusability, due to
Existing filter material 2, inner frame 3 and by-passing valve 4 are fixed together, during so changing filter core, interior
Skeleton 3 and by-passing valve 4 are replaced in the lump, cause the waste of resource, too increase simultaneously and use into
This, and this filter core being replaced processes and recycling difficulty is big, not environmentally.
As in figure 2 it is shown, be existing another kind of return filter, including filter core and filter cylinder 7, described filter
Core is provided with by-passing valve 5 and skeleton 6, and the lower end of filter core is located at by described by-passing valve 5.Although described fluid
It is by filter core interior stream, but, owing to the lower end of filter core is located at by described by-passing valve 5, so
When the opened oil of by-passing valve 5, the internal intercepted pollutant of filter core is returned to fuel tank.Therefore this time
Flow filter economy the most not, environmental protection, and when oil crossed by filter element replacing and by-passing valve, all can make to stay
There is the dirty oil within filter core and intercepted pollutant comes back in fuel tank, severe contamination fluid.
Additionally, in hydraulic system, fluid there is also substantial amounts of metallic particles, if do not processed,
By increase filter core receive dirt burden, shorten filter core service life, to this end, existing reflux and filter is past
Toward using an additional magnetic filter, filtering the metallic particles produced by component abrasion, it takies
Space is big, cost is high.
Therefore, during changing filter core, fluid is heavily polluted and the most economic and environment-friendly problem
Have to be solved.
Summary of the invention
It is an object of the invention to provide a kind of return filter, to solve the inadequate warp of existing return filter
Ji environmental protection and the problem that fluid is heavily polluted during changing filter core.
For achieving the above object, the present invention is by the following technical solutions:
A kind of return filter, including filter cover, filter and filter cylinder, wherein, described filter is positioned at described
Between filter cover and filter cylinder, below the inwall of described filter cylinder, it is provided with exoskeletal filter core, described exoskeletal filter core
Upper end be provided with a by-passing valve, the center of described by-passing valve and exoskeletal filter core is provided with a bar magnet, described
The bottom of bar magnet extends the middle and lower part of filter core.
According to the present invention, described by-passing valve includes a bracing frame, a circlip, a by-pass valve body,
One by-pass valve cover and a case of by-pass valve, support frame as described above is located in filter, described by-pass valve cover and side
Logical valve body is located at above the inwall of filter cylinder, described case of by-pass valve be located at by-pass valve cover and by-pass valve body it
Between.
According to the present invention, support frame as described above is by annulus, lower annulus and upper annulus and lower annulus on one
Between the single-casting of three inclined struts composition, the center of described upper annulus is provided with a through hole, and one is long
Described in screw bolt passes, bar magnet is fixed on bypass by through hole, bar magnet and a nut and a wing nut
Valve and the center of exoskeletal filter core, and bar magnet is fixed between upper annulus and the nut of bracing frame,
Described wing nut is placed in the bottom of filter cylinder, is provided with a pressure between described filter cover and the upper annulus of bracing frame
Tight spring, described lower annulus is provided with some small through hole, and crossing when described small through hole is by-passing valve bypass is flowed
Hole, the center of described lower annulus is additionally provided with a large through-hole, and by-pass valve body is through large through-hole and by elasticity
Back-up ring links together with the lower annulus of bracing frame.
According to the present invention, the top of described filter cover is provided with a detector.
According to the present invention, described filter cover and filter are fixed together by four bolts, described filter
It is equipped with O between lid and filter cylinder and filter.
Further, described bar magnet is made up of some permanent magnets.
Further, described detector is Pressure gauge or signalling generator.
A kind of method using return filter of the present invention to filter fluid, comprises the following steps:
Step one: fluid enters filter from filter opening part, and flows downward along the endoporus of by-pass valve body
Entering the inner chamber of exoskeletal filter core, the most of metallic particles in fluid is inhaled by bar magnet in this process
Attached, complete the first of fluid and heavily purify；
Step 2: fluid enters the inner chamber of exoskeletal filter core, by the filtration of exoskeletal filter core, finally
Through the hole on filter cylinder, enter in container.
Further, when exoskeletal filter core blocks, and pressure is increased to the setting value of detector, do not have
Changing exoskeletal filter core in time, pressure continues to raise, when reaching the maximum pressure that case of by-pass valve bears,
By-pass valve cover pressure-bearing is descending and compresses case of by-pass valve so that by-pass valve cover and bracing frame are against formation
Sealing surface is opened, and fluid flows between by-pass valve body and filter cylinder, and flows into through the hole on filter cylinder
Container.Owing to by-passing valve is in the upper end of exoskeletal filter core, will not be exoskeletal by the fluid of by-passing valve
The pollutant of filter core inner chamber brings container into.
The return filter of the present invention, it provides the benefit that:
1, its design is ingenious, saves material, saves space, more economical, environmental protection.Be mainly manifested in
Lower two aspects:
(1) it is independently mounted in return filter due to by-pass valve body, and on filter core, is not provided with skeleton,
During replacing, it is not necessary to change with filter core, solve existing filter element skeleton and by-pass valve body simultaneously
The problem frequently changed.Therefore, discarded filter core is processed more environmentally friendly more economical；
(2) compared with other filters, this filter core decreases this part of skeleton, i.e. saves filter core
And the space between filter cylinder, save material, structure is terse so that filter is equal at diametric(al) ratio
The smaller and more exquisite economy of other filter of flow, filter core part is few simultaneously, simple in construction, changes and installs
Time more convenient；
2, because fluid is to be flowed by filter core interior, so pollutant and the fluid of filtered
All resting on inside filter core, when changing filter core, described filter core and by-passing valve etc. are suggested in the lump, filter core
Inner chamber do not have all the time and the downstream of return filter is through, internal pollutant and filtered residual
Residual current body with filter core out, will not flow back to container, it is ensured that the cleannes of system will not have been filtered again
Pollutant recontamination, improves the service life of equipment；
3, the by-passing valve of the present invention is arranged on the upper end of filter core, and by-passing valve is intercepted in filter core when crossing stream
The pollutant in portion will not flow back to container；
4, its reasonable in design, powerful, and the central authorities at filter cylinder are provided with bar magnet, both will not be by
Fluid enters the blocked inlet of filter cylinder, can decrease with metallic particles most in fluid-absorbent again
Filter core receive dirt burden, compared with other return filter, be greatly prolonged the life-span of filter core, also save
Magnetic filter is additionally configured in system.
Accompanying drawing explanation
Fig. 1 is the sectional view of existing return filter；
Fig. 2 is another sectional view of existing return filter；
Fig. 3 is the sectional view of the return filter of the present invention.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the return filter of the present invention is described in further detail.
As it is shown on figure 3, be the return filter of the present invention, including filter cover 14, filter 21 and filter cylinder
11, wherein, described filter 21 between described filter cover 14 and filter cylinder 11, described filter cylinder 11
Being provided with exoskeletal filter core 12 below inwall, the upper end of described exoskeletal filter core 12 is provided with a by-passing valve, institute
The center stating by-passing valve and exoskeletal filter core 12 is provided with a bar magnet 23, and the bottom of described bar magnet 23 extends
The middle and lower part of exoskeletal filter core 12.
Described by-passing valve includes a bracing frame 16, a circlip 24, a by-pass valve body 19, a bypass
Valve gap 18 and a case of by-pass valve 10, support frame as described above 16 is located in filter 21, described by-pass valve cover
18 and by-pass valve body 19 be located at above the inwall of filter cylinder 11, described case of by-pass valve 10 is located at by-passing valve
Between lid 18 and by-pass valve body 19.
Support frame as described above 16 is by annulus 25, lower annulus 29 and upper annulus 25 and lower annulus on one
The single-casting of three inclined strut 26 compositions between 29, the center of described upper annulus 25 is provided with one and leads to
Hole 9, a stay bolt 22 sequentially passes through described through hole 9, bar magnet 23 and nut 28 and a butterfly
Bar magnet 23 is fixed on by-passing valve and the center of exoskeletal filter core 12 by nut 13, and by bar magnet 23
Being fixed between the upper annulus 25 of bracing frame 16 and nut 28, described wing nut 13 is placed in filter cylinder
The bottom of 11, is provided with a holddown spring 15 between described filter cover 14 and the upper annulus 25 of bracing frame 16,
Described lower annulus 29 is provided with some small through hole 30, and crossing when described small through hole 30 bypasses for by-passing valve is flowed
Hole, the center of described lower annulus 29 is additionally provided with a large through-hole, and by-pass valve body 19 is through large through-hole and leads to
The lower annulus 29 crossing circlip 24 and bracing frame 16 links together.
The top of described filter cover 14 is provided with a detector 20.
Described filter cover 14 and filter 21 are fixed together by four bolts 27, described filter cover 14
And between filter cylinder 11 and filter 21, it is equipped with O 8.
Described bar magnet 23 is made up of some permanent magnets, permanent magnet can be increased or decreased according to actual conditions
Quantity.
Described detector 20 is Pressure gauge or signalling generator.
As it is shown on figure 3, the filled arrows in figure represents the fluid of filtered, hollow arrow represents warp
Fluid after the filtration of exoskeletal filter core 12；Big arrow in figure represents that fluid is through exoskeletal filter core 12
Flow trace during filtration, small arrow represents the flow trace of fluid when stream crossed by by-passing valve.Therefore, from
It can be seen that the fluid of the present invention is to be flowed by the interior of exoskeletal filter core 12 in Fig. 3.
A kind of method using return filter of the present invention to filter fluid, comprises the following steps:
Step one: fluid enters filter 21 from filter 21 opening part, and along the endoporus of by-pass valve body 19
31 flow downward enters the inner chamber of exoskeletal filter core 12, the in this process most of metal in fluid
Particle is adsorbed by bar magnet 23, completes the first of fluid and heavily purifies；
Step 2: fluid enters the inner chamber of exoskeletal filter core 12, by the filtration of exoskeletal filter core 12,
Eventually pass through the hole on filter cylinder 11, enter in container.
When exoskeletal filter core 12 blocks, when pressure is increased to the setting value of detector 20, the most in time
Changing exoskeletal filter core 12, pressure continues to raise, when reaching the maximum pressure that case of by-pass valve 10 bears,
By-pass valve cover 18 pressure-bearing is descending and compresses case of by-pass valve 10 so that by-pass valve cover 18 and bracing frame 16
Being opened against the sealing surface formed, fluid flows between by-pass valve body 19 and filter cylinder 11, and passes
Hole on filter cylinder 11 flows into container.Owing to by-passing valve is in the upper end of exoskeletal filter core 12, by side
The fluid of logical valve will not bring the pollutant in exoskeletal filter core 12 inner chamber into container.
Constantly blocking when exoskeletal filter core 12 is contaminated thing, the pressure of exoskeletal filter core 12 upstream is continuous
Raise, when pressure reaches the setting of signalling generator or Pressure gauge display pressure reaches certain value, represent
Described exoskeletal filter core 12 needs to change.Now shut down, turn on bolt 27, open filter cover 14, take
Go out holddown spring 15, then by-passing valve, exoskeletal filter core 12, bar magnet 23 are carried in the lump from filter cylinder 11
Go out.Owing to the fluid of the present invention is to be flowed by the interior of exoskeletal filter core 12, therefore, exist
During this, pollutant is the most all deposited in the inner chamber of exoskeletal filter core 12.Exoskeletal filter core 12
In inner chamber, fluid and the pollutant of filtered are taken out of completely with exoskeletal filter core 12, will not again flow
Return container.If also having remaining fluid in exoskeletal filter core 12, first fluid can be poured on other appearance
In device, turn on wing nut 13 afterwards, exoskeletal filter core 12 is pulled up, meanwhile, bar magnet can be cleared up
23, more exoskeletal new filter core 12 is installed, wing nut 13 of screwing on, then by by-passing valve together with bone free
Frame filter core 12 inserts filter cylinder 11 together, presses holddown spring 15, covers filter cover 14, tights a bolt 27
?.
Claims (7)
1. return filter, including filter cover, filter and filter cylinder, it is characterised in that described filter is positioned at
Between described filter cover and filter cylinder, below the inwall of described filter cylinder, it is provided with exoskeletal filter core, described exoskeletal
The upper end of filter core is provided with a by-passing valve, and the center of described by-passing valve and exoskeletal filter core is provided with a bar magnet,
The bottom of described bar magnet extends the middle and lower part of exoskeletal filter core, and described filter cylinder is provided with some holes,
Described by-passing valve includes a bracing frame, a circlip, a by-pass valve body, a by-pass valve cover and
One case of by-pass valve, support frame as described above is located in filter, and described by-pass valve cover and by-pass valve body are located at filter
Above the inwall of cylinder, described case of by-pass valve is located between by-pass valve cover and by-pass valve body,
Support frame as described above be by annulus on, between lower annulus and upper annulus and lower annulus three tiltedly
The single-casting of pillar composition,
The center of described upper annulus is provided with a through hole, a stay bolt sequentially pass through described through hole, bar magnet with
And one nut and a wing nut bar magnet is fixed on by-passing valve and the center of exoskeletal filter core, and
Being fixed on by bar magnet between upper annulus and the nut of bracing frame, described wing nut is placed in the bottom of filter cylinder,
A holddown spring it is provided with between described filter cover and the upper annulus of bracing frame,
Described lower annulus is provided with some small through hole, and described small through hole is flowing hole during by-passing valve bypass,
The center of described lower annulus is additionally provided with a large through-hole, and by-pass valve body is through large through-hole and passes through circlip
Link together with the lower annulus of bracing frame.
2. return filter as claimed in claim 1, it is characterised in that the top of described filter cover sets
There is a detector.
3. return filter as claimed in claim 1, it is characterised in that described filter cover and filter lead to
Cross four bolts to be fixed together, between described filter cover and filter cylinder and filter, be equipped with O.
4. return filter as claimed in claim 1, it is characterised in that described bar magnet by some forever
Magnet forms.
5. return filter as claimed in claim 2, it is characterised in that described detector is pressure
Table or signalling generator.
6. use the method that the return filter as described in any one of claim 1-5 filters fluid,
It is characterized in that, comprise the following steps:
Step one: fluid enters filter from filter opening part, and flows downward along the endoporus of by-pass valve body
Entering the inner chamber of exoskeletal filter core, the most of metallic particles in fluid is inhaled by bar magnet in this process
Attached, complete the first of fluid and heavily purify；
Step 2: fluid enters the inner chamber of exoskeletal filter core, by the filtration of exoskeletal filter core, finally
Through the hole on filter cylinder, enter in container.
7. the method that return filter as claimed in claim 6 filters fluid, it is characterised in that when
Exoskeletal filter core blocks, and when pressure is increased to the setting value of detector, does not change exoskeletal filter in time
Core, pressure continues to raise, when reaching the maximum pressure that case of by-pass valve bears, under by-pass valve cover pressure-bearing
Go and compress case of by-pass valve so that by-pass valve cover and bracing frame are opened against the sealing surface formed,
Fluid flows between by-pass valve body and filter cylinder, and flows into container through the hole on filter cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410105940.7A CN103867537B (en) | 2014-03-20 | 2014-03-20 | Return filter and the method filtering fluid thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410105940.7A CN103867537B (en) | 2014-03-20 | 2014-03-20 | Return filter and the method filtering fluid thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103867537A CN103867537A (en) | 2014-06-18 |
| CN103867537B true CN103867537B (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410105940.7A Active CN103867537B (en) | 2014-03-20 | 2014-03-20 | Return filter and the method filtering fluid thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104941248B (en) * | 2015-07-03 | 2016-08-10 | 上海闰铭精密技术有限公司 | A monoblock type ROCKET filter element |
| CN105889184A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Oil filtering method adopting filter, magnetization and adsorption |
| CN105864189A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Hydraulic wave filtering method for full-band variable structure |
| KR101778172B1 (en) * | 2016-11-15 | 2017-09-26 | 주식회사프라임 | Dish washer |
| CN106895046B (en) * | 2017-04-06 | 2018-08-31 | 上海朗境流体技术有限公司 | One plants case last time flow filter and its method for filtering fluid |
| CN109016887B (en) * | 2018-06-14 | 2021-11-05 | 淮北联联信息科技有限公司 | Peculiar smell removing device for printer |
| BE1026438B1 (en) * | 2018-06-26 | 2020-02-04 | Atlas Copco Airpower Nv | Filtering device and method for switching off and / or switching on such a filtering device |
| CN112777558B (en) * | 2021-01-18 | 2022-12-06 | 广东韶钢松山股份有限公司 | Oil pumping device |
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|---|---|---|---|---|
| US4053410A (en) * | 1975-09-10 | 1977-10-11 | Caterpillar Tractor Co. | Filter assembly with modulating bypass valve |
| US4705626A (en) * | 1986-03-19 | 1987-11-10 | Aldo Morelli | Magnetic oil filter module |
| CN2890454Y (en) * | 2006-03-25 | 2007-04-18 | 黎明液压有限公司 | Oil adsorption and return filter |
| DE102007004492A1 (en) * | 2007-01-30 | 2008-08-07 | Rt-Filtertechnik Gmbh | Filter element for cleaning fluids |
| CN201115800Y (en) * | 2007-08-15 | 2008-09-17 | 奇瑞汽车股份有限公司 | Normal atmosphere filter |
| CN103089751A (en) * | 2011-11-02 | 2013-05-08 | 南通新凤祥液压铸造有限公司 | Modified oil filter |
| CN202431652U (en) * | 2011-12-21 | 2012-09-12 | 南京讯联液压件有限公司 | Return oil filter with automatic oil-supplementing function |
| CN103252127A (en) * | 2013-04-25 | 2013-08-21 | 霍志明 | Oil suction plastic part of pipeline |
| CN203404172U (en) * | 2013-08-14 | 2014-01-22 | 温州市德尔油压器材厂 | Filter with safety valve |
| CN203809426U (en) * | 2014-03-20 | 2014-09-03 | 上海朗境流体技术有限公司 | Return filter |
-
2014
- 2014-03-20 CN CN201410105940.7A patent/CN103867537B/en active Active
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