CN105298994B - A kind of method of improved return filter and its filtering fluid - Google Patents
A kind of method of improved return filter and its filtering fluid Download PDFInfo
- Publication number
- CN105298994B CN105298994B CN201410258153.6A CN201410258153A CN105298994B CN 105298994 B CN105298994 B CN 105298994B CN 201410258153 A CN201410258153 A CN 201410258153A CN 105298994 B CN105298994 B CN 105298994B
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- filter
- exoskeletal
- filter core
- fluid
- pass valve
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Abstract
The present invention is a kind of method on improved return filter and its filtering fluid, including filter cover, filter and filter cylinder, wherein, the filter is located between the filter cover and filter cylinder, the inwall lower section of the filter cylinder is provided with exoskeletal filter core, the upper end of the exoskeletal filter core is provided with a by-passing valve, and the center of the exoskeletal filter core is provided with a bar magnet, and the bottom of the bar magnet extends the middle and lower part of exoskeletal filter core.When using, fluid enters filter from filter opening, and inner chamber along by-pass valve body flows downward into the inner chamber of exoskeletal filter core, and the most of metallic particles in fluid is adsorbed by bar magnet, and complete fluid first purifies again；Then the filtering that fluid passes through exoskeletal filter core, eventually passes through the hole on filter cylinder, into container.Its advantage is：Smart structural design, improves business efficiency, strengthens environmental protection；When filter core and by-passing valve excessively stream is changed, being intercepted at the pollutant inside filter core will not flow back to container to fluid, improve the service life of equipment.
Description
Technical field
It is on a kind of improved return filter and its filtering fluid specifically the invention belongs to art of filters
Method.
Background technology
In hydraulic test and hydraulic system, the clean level of fluid has for the functional reliability of hydraulic test and life-span
Important influence.Therefore the pollution situation that is clean and improving fluid of fluid is kept, it is extremely important for hydraulic system.Mesh
Before, in Fluid-transmission or transmitting procedure, return filter is often installed, for filtering the pollutant in fluid, make to flow back to
Fluid in container keeps cleaning.
Existing return filter, mainly has two kinds, respectively as depicted in figs. 1 and 2.Filled arrows in figure represent without
The oil of filtering, hollow arrow is represented by the oil after filter element filtering；When big arrow in figure represents fluid through filter core normal filtration
Flow trace, small arrow represent filter core block after fluid by by-passing valve when flow trace.
As shown in figure 1, be a kind of existing return filter, including filter core and filter cylinder 1, the filter core include filter material 2, interior
Skeleton 3 and by-passing valve 4.The filter material 2, inner frame 3 and by-passing valve 4 are fixed together.In running, partly without
The oil and pollutant of filter are deposited between filter material 2 and filter cylinder 1.This return filter, because fluid is inside by filter core outside
Portion flows, and has a serious problem, after filter core is extracted, be deposited between filter material 2 and filter cylinder 1 during filter core is changed
During the oil and pollutant not filtered inevitably come back to fuel tank, severe contamination fluid, this to hydraulic system in set
There are important influence in standby functional reliability and life-span.On the other hand, existing filter material 2 can not be used repeatedly, inner frame 3
Can be with Reusability, because existing filter material 2, inner frame 3 and by-passing valve 4 are fixed together, so changing with by-passing valve 4
During filter core, inner frame 3 and by-passing valve 4 are replaced in the lump, cause the waste of resource, while also increasing use cost, and this
Plant the filter core being replaced to process and recycle difficulty big, not environmentally.
As shown in Fig. 2 being existing another return filter, including filter core and filter cylinder 7, the filter core are provided with bypass
Valve 5 and skeleton 6, the by-passing valve 5 is located at the lower end of filter core.Although the fluid is by filter core interior stream, by
In the by-passing valve 5 located at the lower end of filter core, so when by-passing valve 5 is opened oily, the intercepted pollutant in filter core inside is again
Return to fuel tank.Therefore the return filter is not only not economical enough, environmental protection, and filter element replacing and by-passing valve excessively oil when, can make
The dirty oil and intercepted pollutant being deposited in inside filter core are come back in fuel tank, severe contamination fluid.
Additionally, in hydraulic system, also there is substantial amounts of metallic particles in fluid, if do not processed, increase filter core is received
Dirty burden, shortens the service life of filter core, therefore, existing reflux and filter often uses an additional magnetic filter, comes
Filter by component abrasion produce metallic particles, its take up room greatly, high cost.
Therefore, fluid is heavily polluted and not economic and environment-friendly enough problem has to be solved during filter core is changed.
The content of the invention
It is an object of the invention to provide a kind of improved return filter, to solve not economic enough the ring of existing return filter
Guarantor and the problem that fluid is heavily polluted during filter core is changed.
To achieve the above object, the present invention uses following technical scheme：
A kind of improved return filter, including filter cover, filter and filter cylinder, wherein, the filter be located at the filter cover with
Between filter cylinder, the inwall lower section of the filter cylinder is provided with exoskeletal filter core, and the upper end of the exoskeletal filter core is provided with a by-passing valve, institute
The inner chamber for stating by-passing valve is provided with a spacer pin pull bar, and the bottom of the spacer pin pull bar is provided with two spacer pins, the spacer pin
One end is located in by-passing valve, and one end is located at the lower section of the upper end cover of exoskeletal filter core, and the center of the exoskeletal filter core is provided with one
Bar magnet, the bottom of the bar magnet extends the middle and lower part of exoskeletal filter core.
According to the present invention, the by-passing valve includes a support frame, a by-pass valve body, a by-pass valve cover and a by-passing valve bullet
Spring, in filter, the by-pass valve cover and by-pass valve body are located at the inwall top of filter cylinder, the by-passing valve bullet for support frame as described above
Spring is located between by-pass valve cover and by-pass valve body.
According to the present invention, support frame as described above is the single-casting being made up of a handle and an annulus, and the handle is arc,
Center is provided with a screwed hole, a stay bolt sequentially pass through the screwed hole, a back-moving spring, spacer pin pull bar, a double nut,
Bar magnet is fixed on the center of exoskeletal filter core for bar magnet and a double nut, and spacer pin pull bar is fixed on into by-passing valve
The center of body, is provided with a holddown spring between the filter cover and the handle of support frame, the annulus is provided with some small through hole,
The small through hole is flowing hole when by-passing valve is bypassed, and the center of the annulus is additionally provided with a large through-hole, and by-pass valve body is through greatly
Through hole is simultaneously linked together by a circlip with the annulus of support frame.
According to the present invention, one end of the filter is provided with a detector.
According to the present invention, the filter cover and filter are fixed together by four bolts, the filter cover and filter cylinder with
O-ring is equipped between filter, O-ring is provided between the exoskeletal filter core and by-pass valve body.
According to the present invention, the bar magnet by some set of permanent magnets into.
According to the present invention, the detector is pressure gauge or signalling generator.
A kind of method for filtering fluid using improved return filter of the present invention, comprises the following steps：
Step one：Fluid enters filter from filter opening, and inner chamber along by-pass valve body flows downward into exoskeletal
The inner chamber of filter core, in this process the most of metallic particles in fluid adsorbed by bar magnet, the first weight for completing fluid is net
Change；
Step 2：Fluid enters the inner chamber of exoskeletal filter core, by the filtering of exoskeletal filter core, eventually passes through on filter cylinder
Hole, into container.
Further, when exoskeletal filter core is blocked, during the setting value of pressure rise to detector, bone free is not changed in time
Frame filter core, pressure continues to raise, and when reaching the maximum pressure that case of by-pass valve bears, by-pass valve cover pressure-bearing is descending and compresses bypass
Valve spring so that by-pass valve cover and support frame abut the sealing surface for being formed and be opened, and fluid is flowed between by-pass valve body and filter cylinder,
And flow into container through the hole on filter cylinder.Because by-passing valve is in the upper end of exoskeletal filter core, will not by the fluid of by-passing valve
The pollutant of exoskeletal filter core inner chamber is brought into container.
Improved return filter of the invention, its advantage is：
1st, its design is ingenious, saves material, save space, more economical, environmental protection.It is mainly manifested in following two aspect：
(1) skeleton is not provided with because by-passing valve is independently mounted in return filter, and on filter core, during replacing, is not required to
To be changed simultaneously with filter core, the frame of filter element and by-passing valve for solving the problems, such as existing filter are frequently changed.Therefore, process useless
Abandon filter core more environmentally friendly more economical；
(2) compared with other filters, the filter core reduces skeleton this part, that is, save between filter core and filter cylinder
Space, and material-saving, structure are terse so that filter is in other filters more compact warp of the diametric(al) than equal flow
Ji.
2nd, because fluid is flowed by filter core interior, pollutant and filtered fluid all rest on filter
Core inner, when changing filter core, the filter core and by-passing valve etc. are suggested in the lump, and the inner chamber of filter core does not have and return filter all the time
Downstream insertion, internal pollutant and filtered residual fluid out, will not again flow back to container, it is ensured that system with filter core
The pollutant recontamination that will not have been filtered of cleannes, improve the service life of equipment.
3rd, by-passing valve of the invention is arranged on the upper end of filter core, and the pollutant inside filter core is intercepted at during by-passing valve excessively stream
Container will not be flowed back to.
4th, its reasonable in design, powerful, and bar magnet is provided with the center of exoskeletal filter core, can be with fluid-absorbent
Most metallic particles, reduce filter core receive dirt burden, compared with other return filters, greatly prolong the longevity of filter core
Life, also saves system and configures magnetic filter in addition.
5th, the setting of spacer pin is ingenious.One is that spacer pin can draw filter core and be carried with by-passing valve when filter core is changed
Rise；Two is the lower section of the upper end cover that spacer pin is located at exoskeletal filter core, is prevented from by the acting in opposition in filter cylinder extroversion filter cylinder
Power causes that exoskeletal filter core is unstable, so as to avoid filter core from coming off.
Brief description of the drawings
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 improved return filter of the invention.
Specific embodiment
Below in conjunction with specific accompanying drawing, the return filter of improvement of the present invention is described in further detail.
As shown in figure 3, be improved return filter of the invention, including filter cover 10, filter 15 and filter cylinder 24, wherein,
The filter 15 is located between the filter cover 10 and filter cylinder 24, and the inwall lower section of the filter cylinder 24 is provided with exoskeletal filter core 25, institute
The upper end for stating exoskeletal filter core 25 is provided with a by-passing valve, and the inner chamber of the by-passing valve is provided with a spacer pin pull bar 32, described spacing
The bottom for selling pull bar 32 is provided with two spacer pins 21, and the one end of the spacer pin 21 is located in by-passing valve, and one end is located at exoskeletal filter
The lower section of the upper end cover of core 25, the center of the exoskeletal filter core 25 is provided with a bar magnet 23, and the bottom of the bar magnet 23 extends nothing
The middle and lower part of skeleton filter core 25.
The by-passing valve includes a support frame 28, a by-pass valve body 33, a by-pass valve cover 18 and a case of by-pass valve 19, institute
Support frame 28 is stated in filter 15, the by-pass valve cover 18 and by-pass valve body 33 are located at the inwall top of filter cylinder 24, the side
Port valve spring 19 is located between by-pass valve cover 18 and by-pass valve body 33.
Support frame as described above 28 is the single-casting being made up of a handle 29 and an annulus 30, and the handle 29 is arc, is carried
The center of hand 29 is provided with a screwed hole 31, and a stay bolt 27 sequentially passes through the screwed hole 31, a back-moving spring 14, spacer pin and draws
Bar magnet 23 is fixed on the centre bit of exoskeletal filter core 25 for bar 32, a double nut 22, bar magnet 23 and another double nut 22
Put, and spacer pin pull bar 32 be fixed on the center of by-pass valve body 33, the handle 29 of the filter cover 10 and support frame 28 it
Between be provided with a holddown spring 12, the annulus 30 is provided with some small through hole 26, and the small through hole 26 is mistake when by-passing valve is bypassed
Discharge orifice, the center of the annulus 30 is additionally provided with a large through-hole, by-pass valve body 33 through large through-hole and by a circlip 16 and
The annulus 30 of support frame 28 links together.
One end of the filter 15 is provided with a detector 13.
The filter cover 10 and filter 15 are fixed together by four bolts 9, the filter cover 10 and filter cylinder 24 and filter
O-ring 20 is equipped between first 15, O-ring 20 is provided between the exoskeletal filter core 25 and by-pass valve body 33.
The bar magnet 23 by some set of permanent magnets into.
The detector 13 is pressure gauge or signalling generator.
As shown in figure 3, the filled arrows in figure represent filtered fluid, hollow arrow is represented through exoskeletal filter core 25
Fluid after filtering；Flow trace when big arrow in figure represents that fluid is filtered by exoskeletal filter core 25, small arrow is represented
The flow trace of fluid during by-passing valve excessively stream.Therefore, from figure 3, it can be seen that fluid of the invention is by exoskeletal filter core 25
Interior flowing.
A kind of method for filtering fluid using improved return filter of the present invention, comprises the following steps：
Step one：Fluid enters filter from the opening of filter 15, and inner chamber along by-pass valve body 33 flows downward and enters nothing
The inner chamber of skeleton filter core 25, in this process the most of metallic particles in fluid adsorbed by bar magnet 23, complete fluid
First purifies again；
Step 2：Fluid enters the inner chamber of exoskeletal filter core 25, by the filtering of exoskeletal filter core 25, eventually passes through filter cylinder
Hole on 24, into container.
When exoskeletal filter core 25 is blocked, during the setting value of pressure rise to detector 13, exoskeletal filter is not changed in time
Core 25, pressure continues to raise, and when reaching the maximum pressure that case of by-pass valve 19 bears, the pressure-bearing of by-pass valve cover 18 is descending and compresses side
Port valve spring 19 so that by-pass valve cover 18 and support frame 28 are opened against the sealing surface for being formed, and fluid flows into by-pass valve body 33
And filter cylinder 24 between, and container is flowed into through the hole on filter cylinder 24.Because by-passing valve is in the upper end of exoskeletal filter core 25, pass through
The fluid of by-passing valve will not bring the pollutant in the inner chamber of exoskeletal filter core 25 into container.
Constantly blocked when exoskeletal filter core 25 is contaminated thing, the pressure of the upstream of exoskeletal filter core 25 is constantly raised, and works as pressure
When setting or pressure gauge the display pressure for reaching signalling generator reach certain value, represent that the exoskeletal filter core 25 needs to change.
Now shut down, turn on bolt 9, open filter cover 10, take out holddown spring 12, then by by-passing valve, exoskeletal filter core 25, bar magnet 23 1
And proposed from filter cylinder 24.Because fluid of the invention is flowed by the interior of exoskeletal filter core 25, therefore, at this
During individual, pollutant is all deposited in the inner chamber of exoskeletal filter core 25 all the time.Filtered stream in the inner chamber of exoskeletal filter core 25
Body and pollutant are taken out of completely with exoskeletal filter core 25, will not again flow back to container.If also residual in exoskeletal filter core 25
, first can be poured on fluid in other container by remaining fluid, and spacer pin pull bar 32, the retraction by-pass valve body of spacer pin 21 are pulled afterwards
In 33, limitation of the spacer pin 21 to exoskeletal filter core 25 is relieved, exoskeletal filter core 25 is pulled up, meanwhile, bar magnet can be cleared up
23, then spacer pin pull bar 32 is pulled, new exoskeletal filter core 25 is installed, spacer pin pull bar 32 is unclamped, then by by-passing valve etc. even
Filter cylinder 24 is inserted together with exoskeletal filter core 25, and holddown spring 12 in pressure cover filter cover 10, tighten bolt 9.
Improved return filter of the invention, its smart structural design both improves business efficiency, and environmental protection is strengthened again；Stream
When filter core and by-passing valve excessively stream is changed, being intercepted at the pollutant inside filter core will not flow back to container to body, improve equipment
Service life.
Claims (6)
1. a kind of improved return filter, including filter cover, filter and filter cylinder, it is characterised in that the filter is located at the filter
Between lid and filter cylinder, the inwall lower section of the filter cylinder is provided with exoskeletal filter core, and the upper end of the exoskeletal filter core is provided with a bypass
Valve, the inner chamber of the by-passing valve is provided with a spacer pin pull bar, and the bottom of the spacer pin pull bar is provided with two spacer pins, the limit
Position pin one end is located in by-passing valve, and one end is located at the lower section of the upper end cover of exoskeletal filter core, and the center of the exoskeletal filter core sets
There is a bar magnet, the bottom of the bar magnet extends the middle and lower part of exoskeletal filter core,
The by-passing valve includes a support frame, a by-pass valve body, a by-pass valve cover and a case of by-pass valve, and support frame as described above is located at
In filter, the by-pass valve cover and by-pass valve body located at the inwall top of filter cylinder, the case of by-pass valve located at by-pass valve cover with
Between by-pass valve body,
Support frame as described above is the single-casting being made up of a handle and an annulus,
The handle is arc, and center is provided with a screwed hole, and a stay bolt sequentially passes through the screwed hole, a back-moving spring, limit
Bar magnet is fixed on the center of exoskeletal filter core for position pin pull bar, a double nut, bar magnet and a double nut, and will limit
Position pin pull bar is fixed on the center of by-pass valve body, and a holddown spring is provided between the filter cover and the handle of support frame,
The annulus is provided with some small through hole, and the small through hole is flowing hole when by-passing valve is bypassed, and the center of the annulus is also
A large through-hole is provided with, by-pass valve body with the annulus of support frame is linked together through large through-hole and by a circlip,
One end of the filter is provided with a detector.
2. improved return filter as claimed in claim 1, it is characterised in that the filter cover and filter pass through four bolts
Be fixed together, be equipped with O-ring between the filter cover and filter cylinder and filter, the exoskeletal filter core and by-pass valve body it
Between be provided with O-ring.
3. improved return filter as claimed in claim 1, it is characterised in that the bar magnet by some set of permanent magnets into.
4. improved return filter as claimed in claim 1, it is characterised in that the detector is pressure gauge or sender
Device.
5. a kind of method that improved return filter using as described in claim any one of 1-4 filters fluid, its feature
It is to comprise the following steps：
Step one：Fluid enters filter from filter opening, and inner chamber along by-pass valve body flows downward into exoskeletal filter core
Inner chamber, in this process the most of metallic particles in fluid adsorbed by bar magnet, complete fluid first purifies again；
Step 2：Fluid enters the inner chamber of exoskeletal filter core, by the filtering of exoskeletal filter core, eventually passes through the hole on filter cylinder
Gap, into container.
6. the method that improved return filter as claimed in claim 5 filters fluid, it is characterised in that when exoskeletal filter core
Block, during the setting value of pressure rise to detector, exoskeletal filter core is not changed in time, pressure continues to raise, and reaches bypass
During the maximum pressure that valve spring bears, by-pass valve cover pressure-bearing is descending and compresses case of by-pass valve so that by-pass valve cover and support frame
It is opened against the sealing surface for being formed, fluid is flowed between by-pass valve body and filter cylinder, and container is flowed into through the hole on filter cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258153.6A CN105298994B (en) | 2014-06-11 | 2014-06-11 | A kind of method of improved return filter and its filtering fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258153.6A CN105298994B (en) | 2014-06-11 | 2014-06-11 | A kind of method of improved return filter and its filtering fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105298994A CN105298994A (en) | 2016-02-03 |
| CN105298994B true CN105298994B (en) | 2017-06-16 |
Family
ID=55196643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410258153.6A Active CN105298994B (en) | 2014-06-11 | 2014-06-11 | A kind of method of improved return filter and its filtering fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105298994B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| US4053410A (en) * | 1975-09-10 | 1977-10-11 | Caterpillar Tractor Co. | Filter assembly with modulating bypass valve |
| CN201115800Y (en) * | 2007-08-15 | 2008-09-17 | 奇瑞汽车股份有限公司 | Normal atmosphere filter |
| CN201500483U (en) * | 2009-05-07 | 2010-06-09 | 宁波市博尔法液压有限公司 | Return oil filter |
| CN102258895A (en) * | 2011-06-15 | 2011-11-30 | 李建灵 | Split type filter element |
| CN202113685U (en) * | 2011-04-29 | 2012-01-18 | 柳州日高过滤器有限责任公司 | Straight gyrus type return oil filter for construction machinery |
| CN202360515U (en) * | 2011-11-02 | 2012-08-01 | 南通新凤祥液压铸造有限公司 | Improved 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 |
| CN102755779A (en) * | 2012-06-21 | 2012-10-31 | 乐清市东风煤矿设备有限公司 | High-precision magnetic combining filter |
| CN203404172U (en) * | 2013-08-14 | 2014-01-22 | 温州市德尔油压器材厂 | Filter with safety valve |
| CN203962565U (en) * | 2014-06-11 | 2014-11-26 | 上海朗境流体技术有限公司 | A kind of improved return filter |
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2014
- 2014-06-11 CN CN201410258153.6A patent/CN105298994B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053410A (en) * | 1975-09-10 | 1977-10-11 | Caterpillar Tractor Co. | Filter assembly with modulating bypass valve |
| CN201115800Y (en) * | 2007-08-15 | 2008-09-17 | 奇瑞汽车股份有限公司 | Normal atmosphere filter |
| CN201500483U (en) * | 2009-05-07 | 2010-06-09 | 宁波市博尔法液压有限公司 | Return oil filter |
| CN202113685U (en) * | 2011-04-29 | 2012-01-18 | 柳州日高过滤器有限责任公司 | Straight gyrus type return oil filter for construction machinery |
| CN102258895A (en) * | 2011-06-15 | 2011-11-30 | 李建灵 | Split type filter element |
| CN202360515U (en) * | 2011-11-02 | 2012-08-01 | 南通新凤祥液压铸造有限公司 | Improved 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 |
| CN102755779A (en) * | 2012-06-21 | 2012-10-31 | 乐清市东风煤矿设备有限公司 | High-precision magnetic combining filter |
| CN203404172U (en) * | 2013-08-14 | 2014-01-22 | 温州市德尔油压器材厂 | Filter with safety valve |
| CN203962565U (en) * | 2014-06-11 | 2014-11-26 | 上海朗境流体技术有限公司 | A kind of improved return filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105298994A (en) | 2016-02-03 |
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