CN106895046B - One plants case last time flow filter and its method for filtering fluid - Google Patents
One plants case last time flow filter and its method for filtering fluid Download PDFInfo
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- CN106895046B CN106895046B CN201710220133.3A CN201710220133A CN106895046B CN 106895046 B CN106895046 B CN 106895046B CN 201710220133 A CN201710220133 A CN 201710220133A CN 106895046 B CN106895046 B CN 106895046B
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- 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
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- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/615—Filtering means
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- 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)
Abstract
The present invention relates to a plants case last time flow filter, including filter cover, filter and filter cylinder, the filter is between the filter cover and filter cylinder, the inner wall of the filter cylinder is equipped with exoskeletal filter core, the upper end of the filter cylinder is equipped with a flaring structure, and the lower end of the filter is internally provided with a collar flange, and the collar flange matches with the flaring structure, it is additionally provided with annular recess on the inner wall of the filter, an elastic spring is equipped in the annular recess.In use, fluid enters filter from the opening of filter, and flow downward into the inner cavity of exoskeletal filter core, bar magnet adsorbing metal particle along large through-hole；Then, the inner cavity of fluid into exoskeletal filter core eventually passes through the aperture on filter cylinder by the filtering of exoskeletal filter core, and into container, advantage is：It is economic and environment-friendly, production cost and assembly cost can be substantially reduced.
Description
Technical field
The invention belongs to art of filters, are about a plants case last time flow filter and its filtering fluid specifically
Method.
Background technology
In hydraulic test and hydraulic system, the clean level of fluid has the functional reliability of hydraulic test and service life
Important influence.Therefore it keeps the cleaning of fluid and improves the pollution situation of fluid, it is extremely important for hydraulic system.Mesh
Before, in Fluid-transmission or transmission process, return filter is often installed, for filtering out the pollutant in fluid, makes to flow back to
Fluid in container keeps cleaning.
Existing return filter, there are mainly two types of, it is as depicted in figs. 1 and 2 respectively.Filled arrows in figure represent without
The oil of filtering, hollow arrow represent the oil after filter element filtering；When big arrow in figure indicates fluid through filter core normal filtration
Flow trace, small arrow indicate filter core block after fluid pass through 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 includes 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 operational process, partly without
The oil and pollutant of filter are deposited between filter material 2 and filter cylinder 1.This return filter, since fluid is by inside outside filter core
Portion is flowed, and is deposited between filter material 2 and filter cylinder 1 after filter core is extracted there are one serious problem during replacing filter core
The oil and pollutant not filtered inevitably come back in fuel tank, seriously pollute fluid, this is to setting in hydraulic system
Standby functional reliability and service life has important influence, therefore this filter is to play the work for temporarily intercepting pollutant
With not playing the role of filtering out pollutant completely.On the other hand, existing filter material 2 cannot be used repeatedly, inner frame 3
It can be used repeatedly with by-passing valve 4, since existing filter material 2, inner frame 3 and by-passing valve 4 are fixed together, so replacing
When filter core, inner frame 3 and by-passing valve 4 are replaced together, cause the waste of resource, while also increasing use cost, and this
The filter core processing and recycle difficulty big that kind is replaced, not environmentally.
As shown in Fig. 2, for existing another return filter, including filter core and filter cylinder 7, the filter core are equipped with bypass
Valve 5 and skeleton 6, the by-passing valve 5 are set to the lower end of filter core.Although the fluid is by filter core interior stream, by
It is set to the lower end of filter core in the by-passing valve 5, so when 5 opened oil of by-passing valve, the pollutant being intercepted inside filter core is again
Return to fuel tank.Therefore the return filter is not only not economical enough, environmental protection, but also when filter element replacing and by-passing valve are excessively oily, can make
It is deposited in dirty oil and intercepted pollutant inside filter core to come back in fuel tank, seriously pollutes fluid.
In addition, in hydraulic system, there is also a large amount of metallic particles in fluid, if do not handled, will increase filter core and receive
Dirty burden, shortens the service life of filter core, for this purpose, existing reflux and filter often uses an additional magnetic filter, comes
The metallic particles generated by component abrasion is filtered, occupied space is big, of high cost.
To solve the above-mentioned problems, Chinese patent CN205371165U discloses a kind of reflux and filter of non-secondary pollution
Device as shown in figure 3, the by-passing valve 90 of the return filter is independently mounted in return filter, and is not provided on filter core 40
Skeleton when replacement, need not simultaneously be replaced with filter core, and the frame of filter element for solving existing filter is frequently replaced with by-passing valve 90
The problem of.Moreover, the center of the filter cylinder 50 of the return filter is provided with bar magnet 60, fluid will not both be entered to entering for filter cylinder 50
It mouthful blocks, and can reduce filter core 40 with most metallic particles in fluid-absorbent and receive dirty burden, substantially prolong filter core
40 service life also saves in systems in addition configuration magnetic filter.In addition, the return filter is by being arranged position-limit mechanism
Filter core is avoided to fall off, the position-limit mechanism is arranged on the supporting rack 70 of the upper end of filter core 40, the position-limit mechanism is by steel ball
81, limit spring 82, limit handle 83, limit trombone slide 84, spacing ring 85, screw rod 86 are constituted.When replacing filter core, can draw
Filter core 40 is raised with by-passing valve 90, easy to operate.However, there are the following problems for the return filter：
1, its position-limit mechanism is complicated, and installation and removal are inconvenient, and material cost is high, is not suitable for batch production；And
And be also easy to when in use there is a situation where interim card fail；
2, its filter cylinder is straight tube, when filter is connected with filter cylinder, needs filter being fixed on lathe, with pressure tool
Filter cylinder rotary pressure deformation is buckled in the existing annular groove of filter, being fixedly connected both to complete, therefore its assembly is complicated, takes
When it is laborious, need special tooling and equipment, and unstable quality, it is necessary to be improved.
Invention content
The object of the present invention is to provide a plants case last time flow filter, with solve existing return filter it is not economical enough,
Problem complicated and that installation and removal are inconvenient.
To achieve the above object, the present invention uses following technical scheme：
One plants case last time flow filter, including filter cover, filter and filter cylinder, the filter be located at the filter cover and filter cylinder it
Between, the inner wall of the filter cylinder is equipped with exoskeletal filter core, wherein
The upper end of the filter cylinder is equipped with a flaring structure, and the lower end of the filter is internally provided with a collar flange, the ring
Shape flange matches with the flaring structure, and annular recess is additionally provided on the inner wall of the filter, is equipped in the annular recess
One for limiting the elastic spring that filter cylinder moves up, and when assembly, the flaring structure of the filter cylinder is supported on the ring of the filter
On shape flange, and filter cylinder and filter are securely fixed by connection by elastic spring.
According to the present invention, the upper end of the exoskeletal filter core is equipped with a supporting rack, and several bypass are equipped in support frame as described above
Valve.
Further, the by-passing valve includes a circlip, a bypass valve seat, a steel ball and a case of by-pass valve, institute
Steel ball, bypass valve seat and circlip are stated inside supporting rack, is located at below the inner wall of filter, the case of by-pass valve is set to
Between steel ball and bypass valve seat.
According to the present invention, support frame as described above is by a upper support frame, lower bracing frame and to be set to upper support frame and lower support
The single-casting of several inclined struts composition between frame, the center of the upper support frame are equipped with a mounting hole,
The lower bracing frame is equipped with several small through hole, and the small through hole is flowing hole when by-passing valve bypasses, under described
The center of supporting rack is additionally provided with a large through-hole, the flowing hole when large through-hole is filtering flow, is equipped in the lower bracing frame
The liquid outlet of several counterbores, the counterbore and filter connects, and the by-passing valve described in one is respectively provided in the counterbore.
Further, the center of the exoskeletal filter core is equipped with a bar magnet, and the bottom of the bar magnet extends to exoskeletal filter core
Middle and lower part, a stay bolt pass through the upper support frame mounting hole be fixedly connected with bar magnet.
Further, the bar magnet by several set of permanent magnets at.
According to the present invention, a filter element upper cover and a filter core lower cover are respectively equipped with above and below the exoskeletal filter core,
A wing plate is extended in the outside of the filter element upper cover to horizontal direction, and the wing plate rides upon on the flaring structure of filter cylinder, plays limit
Position effect, the hidden danger for effectively avoiding exoskeletal filter core from being disengaged with lower bracing frame, to prevent the filter material of exoskeletal filter core because of immersion oil
Too long and the problem of cave in；In addition, due to the setting of filter core lower cover, when replacing exoskeletal filter core, filtered oil
It stays in exoskeletal filter core, secondary pollution can be prevented.
Further, O-ring is equipped between the filter and filter cover, to increase the leakproofness between filter and filter cover；Institute
It states and is equipped with O-ring between filter and lower bracing frame, to increase the leakproofness between filter and lower bracing frame；The exoskeletal filter core
Filter element upper cover and lower bracing frame between be equipped with O-ring.
Further, the filter element upper cover is equipped with handle, convenient for exoskeletal filter core is proposed filter cylinder.
Preferably, the handle is arc, and 180 degree can be overturn with respect to filter element upper cover, flexible and convenient to use.
According to the present invention, one end of the filter is equipped with a detector (such as pressure gauge or signalling generator).
A method of fluid being filtered using return filter on case of the present invention, is included the following steps：
Step 1：Fluid enters filter from the opening of filter, and flows downward into exoskeletal filter core along large through-hole
Inner cavity, in this process most of metallic particles in fluid adsorbed by bar magnet, complete fluid first purifies again；
Step 2：The inner cavity that fluid enters exoskeletal filter core is eventually passed through by the filtering of exoskeletal filter core on filter cylinder
Aperture, into container.
Further, when exoskeletal filter core blocking, the setting value of pressure rise to detector, bone free is not replaced in time
Frame filter core, pressure continue to increase, and when reaching the maximum pressure that case of by-pass valve is born, steel ball pressure-bearing downlink simultaneously compresses by-passing valve bullet
Spring so that steel ball and lower bracing frame abut the sealing surface formed and be opened, and fluid flows into counterbore, and the liquid outlet on filter
Flow into container.It, will not be exoskeletal filter core inner cavity by the fluid of by-passing valve since by-passing valve is in the upper end of exoskeletal filter core
Pollutant brings container into.
Return filter on the case of the present invention, advantage are：
1, its is ingenious in design, save material, save space, it is more economical, environmentally friendly, when being produced in batches, compound material and
Two aspect of processing, has huge economic benefit.It is mainly manifested in following two aspect：
(1) since by-passing valve is independently mounted in return filter, and it is not provided with skeleton on filter core, when replacement, is not required to
It to be replaced simultaneously with filter core, solves the problems, such as that the frame of filter element of existing filter is frequently replaced with by-passing valve.Therefore, processing is useless
It is more environmentally friendly more economical to abandon filter core；
(2) compared with other filters, which reduces skeleton this part, that is, saves between filter core and filter cylinder
Space, and material is saved, structure is terse so that filter is in diametric(al) warp more small and exquisite than other filters of same flow
Ji；
(3) smart structural design of filter element upper cover can avoid exoskeletal filter core from being disengaged with lower bracing frame hidden well
Suffer from, and its is simple in structure, compared with return filter disclosed in Chinese patent CN205371165U, reduces by limit bullet
The position-limit mechanism for playing phase same-action of spring, limit knob, limit trombone slide, spacing ring and several steel balls composition, entire position restrainer
The processing cost of structure can save 90% or more, substantially reduce production cost；Simultaneously return filter is effectively prevented using
It is easy the hidden danger of interim card failure in the process, improves the reliability of filter.
(4) smart structural design of filter cylinder and filter：The upper end of the filter cylinder is handled using flaring, can be when suppressing filter cylinder
It is molded together, when hardly increasing the cost that filter cylinder makes, and assembling, it is only necessary to which the flaring structure of the filter cylinder is supported on filter
On the collar flange of the filter, it is used in combination an elastic spring to limit the upward movement of filter cylinder, you can to complete filter and filter cylinder
Assembly, it is possible to reduce 90% or more assembly time and difficulty.
2, because fluid is flowed by filter core interior, pollutant and filtered fluid all rest on filter
Core inner, when replacing filter core, the filter core and by-passing valve etc. are suggested together, and the inner cavity of filter core does not have always and return filter
Downstream perforation, internal pollutant and filtered residual fluid come out with filter core, will not flow back to container again, ensures system
The pollutant recontamination that will not have been filtered out of cleannes, improve the service life of equipment.
3, by-passing valve of the invention is mounted on the upper end of filter core, and when by-passing valve overcurrent is intercepted at the pollutant inside filter core
Container will not be flowed back to.
4, its is reasonable in design, powerful, and bar magnet is provided in the center of exoskeletal filter core, can be in fluid-absorbent
Most metallic particles, reduces filter core and receives dirty burden and greatly prolong the longevity of filter core compared with other return filters
Life, also saves system and in addition configures magnetic filter.
5, the sealing surface of by-passing valve and lower bracket is had the following advantages that using steel ball compared with existing by-pass valve cover：
(1) since the shape of steel ball is regular, compared with existing by-pass valve cover, sealing effect is good；
(2) existing supporting rack is generally aluminium material, relatively soft, and steel ball is harder, therefore steel ball matches with lower bracket
When conjunction, sealing effect is more preferable；
(3) simple for process when installation since the shape of steel ball is regular；And existing by-pass valve cover, it needs to reprocess, work
Skill is complicated.
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 another sectional view of existing return filter；
Fig. 4 is the sectional view of return filter on the case of the present invention.
Specific implementation mode
Below in conjunction with specific attached drawing, return filter on the case of the present invention and its method for filtering fluid are made further detailed
It describes in detail bright.
As shown in figure 4, for the plants case last time flow filter of the present invention, including filter cover 8, filter 9 and filter cylinder 10, the filter
First 9 between the filter cover 8 and filter cylinder 10, and the inner wall of the filter cylinder 10 is equipped with exoskeletal filter core 11, the exoskeletal filter core
11 upper end is equipped with a supporting rack 12, and several by-passing valves 13 (by-passing valve 13 is preferably 6) are equipped in support frame as described above 12,
The center of the exoskeletal filter core 11 is equipped with a bar magnet 14, and the bottom of the bar magnet 14 extends to the middle and lower part of exoskeletal filter core 11,
Wherein, the upper end of the filter cylinder 10 is equipped with a flaring structure 101, and the lower end of the filter 9 is internally provided with a collar flange 91, institute
It states collar flange 91 with the flaring structure 101 to match, annular recess, the ring-type is additionally provided on the inner wall of the filter 9
One is equipped in groove for limiting the elastic spring 15 that filter cylinder 10 moves up, when assembly, the flaring structure 101 of the filter cylinder 10
It is supported on the collar flange 91 of filter 9, and filter cylinder 10 and filter 9 is securely fixed by connection by elastic spring 15.
The by-passing valve 13 includes a bypass valve seat 131, a steel ball 132, a case of by-pass valve 133 and a circlip
134, the steel ball 132 and bypass valve seat 131 are set in lower bracing frame 122, are located at below the inner wall of filter 9, the by-passing valve
Spring 133 is set between steel ball 132 and bypass valve seat 131, and the circlip 134 is set to bypass valve seat 131 and lower bracing frame
Between 122.
Support frame as described above 12 is by a upper support frame 121, lower bracing frame 122 and to be set to upper support frame 121 and lower support
The single-casting (inclined strut 123 is preferably three, and is arranged at equal intervals) that several inclined struts 123 between frame 122 form,
The center of the upper support frame 121 is equipped with a mounting hole, and a stay bolt 16 sequentially passes through nut 17, spring washer 18, the peace
Bar magnet 14 is fixed on the center of exoskeletal filter core 11 by dress hole, and the lower bracing frame 122 is equipped with several small through hole 19, institute
It is flowing hole when by-passing valve 13 bypasses to state small through hole 19, and the center of the lower bracing frame 122 is additionally provided with a large through-hole 20, described
Flowing hole when large through-hole 20 is filtering flow, the lower bracing frame 122 is interior to be equipped with several counterbores 21, the counterbore 21 and filter
9 liquid outlet 92 connects, to and reservoir, the by-passing valve 13 described in one is respectively provided in the counterbore 21.
The exoskeletal filter core 11 include be respectively arranged on above and below filter element upper cover 111 and filter core lower cover 112 and
The outside of filter material 113 between filter element upper cover 111 and filter core lower cover 112, the filter element upper cover 111 extends to horizontal direction
Go out a wing plate 114, the wing plate 114 rides upon at the flaring structure 101 of filter cylinder 10, plays position-limiting action, avoids exoskeletal filter core
11 hidden danger disengaged with lower bracing frame 122, to prevent the filter material 113 of exoskeletal filter core 11 because immersion oil too long due to cave in
Problem；In addition, due to the setting of filter core lower cover 112, when replacing exoskeletal filter core 11, filtered oil can stay in bone free
In frame filter core 11.
O-ring 22 is equipped between the filter 9 and filter cover 8, to increase the leakproofness between filter 9 and filter cover 8；The filter
O-ring 22 is equipped between first 9 and lower bracing frame 122, to increase the leakproofness between filter 9 and lower bracing frame 122；The bone free
O-ring 22 is equipped between the filter element upper cover 111 and lower bracing frame 122 of frame filter core 11.
The filter element upper cover 111 is equipped with handle 115, convenient for exoskeletal filter core 11 is proposed filter cylinder 10.The handle 115
Preferably arc can overturn 180 degree with respect to filter element upper cover 111, flexible and convenient to use.
One end of the filter 9 is equipped with a detector 23 (such as pressure gauge or signalling generator).
The bar magnet 14 by several set of permanent magnets at.
As shown in figure 4, the filled arrows in figure represent filtered fluid, hollow arrow is represented through exoskeletal filter core 11
Filtered fluid；Big arrow in figure indicates that flow trace when fluid is filtered by exoskeletal filter core 11, small arrow indicate
The flow trace of fluid when 13 overcurrent of by-passing valve.Therefore, figure 4, it is seen that the fluid of the present invention is by exoskeletal filter core
11 interior flowing.
A method of fluid being filtered using return filter on the case described in the present embodiment, is included the following steps：
Step 1：Fluid enters filter 9 from the opening of filter 9, and flows downward into exoskeletal filter along large through-hole 20
The inner cavity of core 11, in this process most of metallic particles of fluid adsorbed by bar magnet 14, the first weight for completing fluid is net
Change；
Step 2：The inner cavity that fluid enters exoskeletal filter core 11 eventually passes through filter cylinder by the filtering of exoskeletal filter core 11
Aperture 102 on 10 is already expired into containing in the container of oil strain.
When the blocking of exoskeletal filter core 11, the setting value of pressure rise to detector 23, exoskeletal filter is not replaced in time
Core 11, pressure continue to increase, and when reaching the maximum pressure that case of by-pass valve 133 is born, 132 pressure-bearing downlink of steel ball simultaneously compresses bypass
Valve spring 133 so that steel ball 132 and lower bracing frame 122 are opened against the sealing surface formed, and fluid flows into counterbore 21, and wears
Liquid outlet 92 on filtering head 9 flows into container.Since by-passing valve 13 is arranged in the upper end of exoskeletal filter core 11, pass through by-passing valve 13
Fluid the pollutant in exoskeletal filter core inner cavity will not be brought into container.
It is constantly blocked when exoskeletal filter core 11 is contaminated object, the pressure of 11 upstream of exoskeletal filter core constantly increases, and works as pressure
Reach the setting of signalling generator or pressure gauge shows pressure when reaching certain value, indicates that the exoskeletal filter core 11 needs replacing.
It shuts down at this time, unscrews filter cover 8, supporting rack 12 is proposed together with by-passing valve 13 and bar magnet 14 from filter cylinder 10, then with handle 115
Exoskeletal filter core 11 proposes.Since the fluid of the present invention is flowed by the interior of exoskeletal filter core 11, at this
During a, pollutant is all deposited in the inner cavity of exoskeletal filter core 11 always.Filtered fluid in exoskeletal filter core inner cavity
It is taken out of completely with exoskeletal filter core 11 with pollutant, container will not be flowed back to again.If there is remnants in exoskeletal filter core 11
Fluid, first fluid can be poured in other container, meanwhile, the metal powder adsorbed on bar magnet 14 can be cleared up, then
New filter core is inserted into filter cylinder 10, then supporting rack 12 is inserted into exoskeletal filter core 11 and filter 9, covers filter cover 8.
Below by return filter disclosed in return filter on the case of the present embodiment and Chinese patent CN205371165U
Material cost and assembly time be compared, it is specific as follows：
(1) material cost and processing cost
By taking the return filter of equivalent specifications as an example, the return filter of Chinese patent CN205371165U includes position restrainer
Structure, for position-limit mechanism by being made of several steel balls, limit spring, limit handle, limit trombone slide, spacing ring, screw rod, structure is multiple
It is miscellaneous；And the position-limit mechanism of the present embodiment is filter element upper cover, which only has more a wing compared with existing filter element upper cover
Plate, the material cost of the wing plate are approximately the 1/30 of the material cost of existing position-limit mechanism.
In addition, the wing plate is integrally formed with filter element upper cover, hardly increase processing cost in casting, therefore compare
Existing position-limit mechanism, processing cost can save 90% or more.If batch production, two aspect of compound material and processing,
With huge economic benefit.
(2) assembly cost
The filter cylinder of the return filter of Chinese patent CN205371165U be straight tube, when filter is connected with filter cylinder, need by
Filter is fixed on lathe, filter cylinder rotary pressure deformation is buckled in the existing annular groove of filter with pressure tool, to complete
The two is fixedly connected, therefore its assembly is complicated, time-consuming and laborious, needs special tooling and equipment, and unstable quality.
And the upper end of the filter cylinder of the present invention is handled by flaring, this structure can be together molded when suppressing filter cylinder, almost
The cost for not increasing filter cylinder making, as long as the flaring structure of filter cylinder is supported on when assembly the collar flange inside filter lower end
On, limit the upward movement of filter cylinder with an elastic spring, you can complete the assembly of filter cylinder and filter.It is revolved with existing lathe
Pressure, assembly cost is compared to can almost ignore, at the same time it can also reduce by 90% or more assembly time and difficulty.In addition, this
The flaring structure of the return filter of embodiment also has the effect for the wing plate for supporting filter element upper cover, prevents exoskeletal filter core and lower branch
Support disengages.
Return filter on the case of the present invention, smart structural design are changed by the small partial structurtes of two parts,
It is identical in the case that meeting function, it is possible to reduce by the position-limit mechanism for a set of complexity that 5 parts form, saved material at
Originally, processing cost and assembly cost, while the hidden danger that this set position-limit mechanism is easy interim card failure in use is avoided, it carries
The high reliability of return filter.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention.These improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a plants case last time flow filter, including filter cover, filter and filter cylinder, the filter between the filter cover and filter cylinder,
The inner wall of the filter cylinder is equipped with exoskeletal filter core, which is characterized in that
The upper end of the filter cylinder is equipped with a flaring structure, and the lower end of the filter is internally provided with a collar flange, and the ring-type is convex
Edge matches with the flaring structure, and annular recess is additionally provided on the inner wall of the filter, and being equipped with one in the annular recess uses
When the elastic spring that limitation filter cylinder moves up, assembly, the flaring structure of the filter cylinder is supported on the cyclic annular convex of the filter
On edge, and filter cylinder and filter are securely fixed by connection by elastic spring,
The upper end of the exoskeletal filter core is equipped with a supporting rack, and several by-passing valves are equipped in support frame as described above,
Be respectively equipped with a filter element upper cover and a filter core lower cover above and below the exoskeletal filter core, the filter element upper cover it is outer
A wing plate extends to horizontal direction in portion, and the wing plate rides upon on the flaring structure of filter cylinder.
2. return filter on case as described in claim 1, which is characterized in that the by-passing valve includes a circlip, one
Bypass valve seat, a steel ball and a case of by-pass valve, the steel ball, bypass valve seat and circlip are set to inside supporting rack, are located at
Below the inner wall of filter, the case of by-pass valve is set between steel ball and bypass valve seat.
3. return filter on case as described in claim 1, which is characterized in that support frame as described above be by a upper support frame, under
The single-casting of supporting rack and several inclined struts composition between upper support frame and lower bracing frame, the upper support frame
Center is equipped with a mounting hole,
The lower bracing frame is equipped with several small through hole, and the small through hole is flowing hole when by-passing valve bypasses, the lower support
The center of frame is additionally provided with a large through-hole, the flowing hole when large through-hole is filtering flow, is equipped in the lower bracing frame several
Counterbore, the counterbore are connected to the liquid outlet of filter, and the by-passing valve described in one is respectively provided in the counterbore.
4. return filter on case as claimed in claim 3, which is characterized in that the center of the exoskeletal filter core is equipped with a magnetic
Stick, the bottom of the bar magnet extend to the middle and lower part of exoskeletal filter core, and a stay bolt passes through the mounting hole and magnetic of the upper support frame
Stick is fixedly connected.
5. return filter on case as described in claim 1, which is characterized in that O-ring is equipped between the filter and filter cover,
It is equipped with O-ring between the filter and lower bracing frame, is equipped between the filter element upper cover and lower bracing frame of the exoskeletal filter core O-shaped
Circle.
6. return filter on case as described in claim 1, which is characterized in that the filter element upper cover is equipped with handle.
7. return filter on case as described in claim 1, which is characterized in that one end of the filter is equipped with a detector.
8. a kind of method of return filter filtering fluid on such as claim 1-7 any one of them casees, which is characterized in that packet
Include following steps：
Step 1：Fluid enters filter from the opening of filter, and flows downward into the inner cavity of exoskeletal filter core along large through-hole,
Most of metallic particles in fluid is adsorbed by bar magnet in this process, and complete fluid first purifies again；
Step 2：The inner cavity that fluid enters exoskeletal filter core is eventually passed through small on filter cylinder by the filtering of exoskeletal filter core
Hole, into container；
When exoskeletal filter core blocks, when the setting value of pressure rise to detector, do not replace exoskeletal filter core in time, pressure after
Height of continuing rising, when reaching the maximum pressure that case of by-pass valve is born, steel ball pressure-bearing downlink simultaneously compresses case of by-pass valve so that steel ball and
Lower bracing frame abuts the sealing surface formed and is opened, and fluid flows into counterbore, and the liquid outlet on filter flows into container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710220133.3A CN106895046B (en) | 2017-04-06 | 2017-04-06 | One plants case last time flow filter and its method for filtering fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710220133.3A CN106895046B (en) | 2017-04-06 | 2017-04-06 | One plants case last time flow filter and its method for filtering fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106895046A CN106895046A (en) | 2017-06-27 |
| CN106895046B true CN106895046B (en) | 2018-08-31 |
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ID=59192809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710220133.3A Active CN106895046B (en) | 2017-04-06 | 2017-04-06 | One plants case last time flow filter and its method for filtering fluid |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201924991U (en) * | 2010-12-16 | 2011-08-10 | 奉化市汇仁汽车部件制造有限公司 | Oil adsorption filter |
| CN102374210A (en) * | 2010-08-12 | 2012-03-14 | 贺勍 | Detachable fineness grading series integral-type seal-sealing magnetic 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 |
| CN103867537A (en) * | 2014-03-20 | 2014-06-18 | 上海朗境流体技术有限公司 | Return filter and method of filtering fluid by using return filter |
| CN105257366A (en) * | 2015-11-12 | 2016-01-20 | 上海朗境流体技术有限公司 | Detachable rotatably-mounted filter and fluid filtering method thereof |
| CN105298994A (en) * | 2014-06-11 | 2016-02-03 | 上海朗境流体技术有限公司 | Improved return filter and fluid filtering method thereof |
| CN205371165U (en) * | 2016-01-18 | 2016-07-06 | 上海朗境流体技术有限公司 | No secondary pollution's return filter |
| CN205654645U (en) * | 2016-05-12 | 2016-10-19 | 新乡市利菲尔特滤器股份有限公司 | Take hydraulic oil filter of bypass |
| CN206626042U (en) * | 2017-04-06 | 2017-11-10 | 上海朗境流体技术有限公司 | One plants case last time flow filter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009013070A1 (en) * | 2009-03-13 | 2010-09-23 | Hydac Filtertechnik Gmbh | Filter device, in particular return-suction filter, and filter element for use in such a filter device |
| JP2016089915A (en) * | 2014-10-31 | 2016-05-23 | 大生工業株式会社 | Hydraulic filter |
-
2017
- 2017-04-06 CN CN201710220133.3A patent/CN106895046B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374210A (en) * | 2010-08-12 | 2012-03-14 | 贺勍 | Detachable fineness grading series integral-type seal-sealing magnetic filter |
| CN201924991U (en) * | 2010-12-16 | 2011-08-10 | 奉化市汇仁汽车部件制造有限公司 | Oil adsorption 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 |
| CN103867537A (en) * | 2014-03-20 | 2014-06-18 | 上海朗境流体技术有限公司 | Return filter and method of filtering fluid by using return filter |
| CN105298994A (en) * | 2014-06-11 | 2016-02-03 | 上海朗境流体技术有限公司 | Improved return filter and fluid filtering method thereof |
| CN105257366A (en) * | 2015-11-12 | 2016-01-20 | 上海朗境流体技术有限公司 | Detachable rotatably-mounted filter and fluid filtering method thereof |
| CN205371165U (en) * | 2016-01-18 | 2016-07-06 | 上海朗境流体技术有限公司 | No secondary pollution's return filter |
| CN205654645U (en) * | 2016-05-12 | 2016-10-19 | 新乡市利菲尔特滤器股份有限公司 | Take hydraulic oil filter of bypass |
| CN206626042U (en) * | 2017-04-06 | 2017-11-10 | 上海朗境流体技术有限公司 | One plants case last time flow filter |
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