CN104623949A - Filter element and filter unit - Google Patents
Filter element and filter unit Download PDFInfo
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- CN104623949A CN104623949A CN201310568718.6A CN201310568718A CN104623949A CN 104623949 A CN104623949 A CN 104623949A CN 201310568718 A CN201310568718 A CN 201310568718A CN 104623949 A CN104623949 A CN 104623949A
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- capping
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Abstract
The invention provides a filter element (1). The filter element comprises a filter medium (11), a first seal cap (12) and a second seal cap (13), wherein the seal caps are connected to the axial tail end of the filter medium in a close manner; the first seal cap (12) comprises a bypass valve (14); the bypass valve comprises a sealer (141) which is provided with a seal edge (142) and a spring element (143) which is used for promoting the seal edge (142) of the sealer to prop against a valve seal surface (121); when the fluid pressure applying to the outer side (3) of the filter element exceeds the fluid pressure applying to the inner side (4) of the filter element and reaches a preset value, the sealer, the spring element and the valve seal surface are used for communicating the outer side (3) and the inner side (4) of the filter element; and the bypass valve (14) is positioned on the outer side (3) of the filter element (1), and has an axial distance from the filter medium (11).
Description
Technical field
The present invention relates to filter core and filter unit, particularly relate to the filter for filtering the fuel in fluid, such as driving application or in hydraulic applications or oil, described driving application examples is as automobile, lorry, commercial car and working machine.
Background technology
Knownly, fluid, particularly fuel or oil filtration, normally utilize filter to realize.Filter comprises shell, and described shell has ladle bowl and lid, and described cap seal closeds the openend of described ladle bowl, and described shell is provided with the entrance of fluid to be filtered and has filtered the outlet of fluid; And filter core, for room in shell being subdivided into two different chambeies, wherein the first chamber is communicated with entrance, the second chamber and outlet.
By this way, be forced to from the fluid of filter inlet flow direction outlet and flow through filter medium, thus the impurity that may contain in fluid is stayed in filter medium.
Typical filter core comprises tubular filtering medium, such as, pleated filter media or depth media, and filter medium opposing end portions in a tightening way, namely by infrared welding or gummed, be fixed with two cappings.
At least one capping is typically provided with the central opening preferably alignd with the longitudinal axis of filter medium, and the interior room of filter core is communicated with the entrance of fluid to be filtered through this longitudinal axis, in this case, is set to from interior outwardly through filter medium; The interior room of filter core or with the outlet filtering fluid, in this case, be set to from outer inwardly through filter medium.
Standing on filter unit have by-passing valve, when the pressure that the pressure of unfiltered upstream cavity exceeds the downstream of having filtered reaches a predetermined value, such as, the filter medium caused because of impurity and/or the diesel oil wax that formed at low temperatures of some quantity blocks and causes, and described valve is for opening the passage between the mistress of filter core and interior room; Correspondingly, if filter medium blocks beyond the threshold limit of allowing, then the pressure of upstream cavity is (about the upstream of fluid stream and filter medium, can be filter core inner chamber or filter core exocoel, specifically depend on the flow path direction relative to above-mentioned filter medium) relative to pressure increase to threshold value of downstream cavity; Once exceed this value, then valve switches to open position from closing position, to realize the fluid passage being from upstream to downstream, avoids the forcing fluid path penetrating filter medium, and filter occurs also to allow fluid to circulate when blocking.
By-passing valve generally includes sealer and spring element, described spring element can have such size, with exceed when upstream cavity pressure downstream cavity pressure with certain value and this value lower than or correspond to threshold value time, described spring element promotes sealer towards the seat of sealer, to guarantee the closed of valve; And once exceed described threshold value, then spring element deformation, to allow sealer to be separated with its seat, thus allows valve to open; Correspondingly, described sealer comprises sealing the margin, when its to contact with valve base surface and by spring element against described surperficial push/pull time, described sealing the margin is for guaranteeing the closed of passage between upstream cavity and downstream cavity.
Be arranged on by described by-passing valve on several position, this is known.It is on strainer cover that a kind of possible valve is arranged, and through being connected to described lid or being the cylinder-shaped body of integral type with described lid, is arranged on by described by-passing valve on this cylinder-shaped body or with it as integral type is arranged.In this manner, the filter core usually assembled together with strainer cover, must be used for guaranteeing the compact siro spinning technology with by-passing valve, that is, by packing ring, to guarantee the sealing between upstream cavity and downstream cavity.
Described scheme has some defects, and one of them is that valve only can guarantee the fastening of low reliability; In addition, described scheme is expensive, this is because be provided with extra packing ring between filter core and by-passing valve.
Another kind of known scheme is arranged on filter core by by-passing valve.The usual integral type of described valve is integrated on a stay pipe, described stay pipe is arranged in the inner space defined by filter medium and end capping, described stay pipe has the medium of capping for carrying, avoid filter medium to cave in, such as, owing to causing from the fluid stream to outside inside filter core.Correspondingly, by-passing valve can integral type be integrated on stay pipe, or installs on the part.
The defect of described scheme also relates to the complicated form of stay pipe (needing to hold by-passing valve), and the disappearance of inner space in filter core; The latter causes the discontinuous fluid stream on filter inner chamber, and limit the size in described chamber, this is because the existence of valve causes.In other words, due to the existence of by-passing valve, the internal diameter of stay pipe and the internal diameter (it can be annular) of filter medium can not be less than minimum of a value, this is because described valve need have such size, to guarantee the smallest passage of the fluid from upstream side to downstream.
An object of the present invention is, provide a kind of simple, rationally and scheme at a low price, to overcome above-mentioned prior art defect.
Above-mentioned purpose is realized by the feature of the present invention comprised in independent claims.Dependent claims sketches the contours of preferred and/or especially preferred aspect of the present invention.
Summary of the invention
Especially, the invention provides a kind of filter core, it comprises filter media, the first capping and the second capping, described capping is connected to the axial end of described filter medium with compact fashion, described first capping comprises by-passing valve, described by-passing valve comprises the sealer with sealing the margin, and the spring element for forcing the sealing the margin of sealer to prop up valve sealing surface; Fluid pressure outside filter core exceeds its fluid inside pressure when reaching a predetermined value, and described sealer, described spring element are communicated with inner side for making the outside of filter core with described valve sealing surface.According to the present invention, described by-passing valve is positioned on outside filter core, with filter medium at a distance of one section of axial distance.
Due to this scheme, can not by the impact of the existence of by-passing valve with the sealing reliability of inner side outside filter core; In fact, described valve is included on filter core, avoids on filter core and has any additional sealing element or another separate part; And additional packing ring, make the cost of cost lower than prior art of this programme further, this is because expensive parts, as packing ring, to be omitted.
In addition, described scheme allows the inner chamber of filter core to have correct size, also allows (annular) medium to have just size, this is because by-passing valve is external relative to medium, thus the size of described medium is no longer by the obstruction of by-passing valve.Further, the direction of fluid stream is not departed from because of the existence of valve, because this ensure that uniform fluid stream in filter core.
Another aspect of the present invention is, the first capping comprises axially extended sleeve pipe outside filter core, and described by-passing valve is arranged on described sleeve pipe.
Described scheme achieves the simplification of filter core configuration, and between valve and filter core definitely closely, described two device integral types are integrated in parts.
Another aspect of the present invention provides, and the axial free terminal of described sleeve pipe comprises the edge and passage that form valve sealing surface, and wherein, described sealer can slide along passage, and described spring element impels described sealer sealing surfaces to prop up valve sealing surface.
Due to this configuration, the integral type of by-passing valve and filter core configures to be improved, the sealer passage that this attribution is valve sealing surface and is set directly in filter core capping.
Another aspect of the present invention provides, and described spring element is connected with sealer in side, and abuts against the edge be arranged on sleeve pipe free terminal.
This scheme allows valve member to be assembled in filter core capping simply; So, due to the interaction of spring element and sealer and filter core capping, achieve the internal structure comprising filter core and by-passing valve.
Another aspect of the present invention is, described first capping comprises the jockey that radial direction is placed in by-passing valve outside.
This scheme allows jockey and by-passing valve integral type to be integrated in filter core capping, thus allows the use of the standard component forming described filter core instead of described capping.That is, described filter core can comprise standarized component, such as filter medium, capping, stay pipe etc.; Meanwhile, depend on actual filter core purposes, there is required by-passing valve and assemble together with described standarized component with the suitable capping of required jockey.
In addition, the invention provides filter unit, it comprises housing, described housing has an axial end and closes, the ladle bowl of another axial end opening, described open end cap seal closes, described unit comprises filter core further, the inner space that shell defines by described filter core is separated into the first chamber and the second chamber, described first chamber communication of fluid entrance, described second chamber communication of fluid outlet, described filter core comprises filter medium, first capping and the second capping, described capping is connected to the axial end of described filter medium with compact fashion, described first capping comprises by-passing valve, described by-passing valve comprises the sealer and spring element with sealing the margin, described spring element is used for impelling sealer sealing the margin to prop up valve sealing surface, fluid pressure outside filter core exceeds its fluid inside pressure when reaching a predetermined value, described sealer, described spring element is communicated with inner side for making the outside of filter core with described valve sealing surface.According to the present invention, described by-passing valve is positioned on outside filter core, with filter medium at a distance of axial distance.
This scheme achieves the outside of filter core and the sealing reliability of inner side, because sealing is not by the impact of the existence of by-passing valve; In fact, described valve is included on filter core, avoids on filter core and has any additional sealing element or another separate part; In addition, avoid using additional packing ring then to make the cost of cost lower than prior art of this programme further, this is because expensive parts, as packing ring, to be omitted.
In addition, described scheme allows the inner chamber of filter core to have correct size, also allows (annular) medium to have just size, this is because by-passing valve is external relative to medium, thus the size of described medium is no longer by the obstruction of by-passing valve.Further, the direction of fluid stream is not departed from because of the existence of valve, because this ensure that uniform fluid stream in filter core.
Another aspect of the present invention is, filter core first capping comprises axially extended sleeve pipe outside filter core, described by-passing valve is arranged on described sleeve pipe, and stay pipe is arranged on ladle bowl, described stay pipe has connection end, for connecting the stay pipe be positioned on ladle bowl, also have for the fluid passage between the outside of stay pipe and inner side, the permeable part of central authorities with holes, and there is the closed free terminal of permeable pin, when described filter core is positioned on its installation site, described permeable pin is for resting on the opening from described filter core sleeve pipe, and when described by-passing valve is positioned on its open position, fluid passage between described pin allows to realize inside described by-passing valve and described filter core.
Due to this configuration, to insert and when being positioned on its operating position, filter core remains on its middle position for ladle bowl at filter core; Described certralizing ability is guaranteed by the scheme of simple and inexpensive, the opening be such as in control by the cover of filter core capping, and from the pin 23 that stay pipe free terminal extends.In addition, because stay pipe is connected on filter ladle bowl, and not included in filter core, therefore, replaceable cartridge is simplified.
Preferably, described permeable pin presents cross shaped head.
Another aspect of the present invention is, filter core first capping comprises the jockey that radial direction is placed in by-passing valve outside, and this jockey can be connected with each jockey be arranged on strainer cover.
This programme allow jockey and by-passing valve integral type in filter core capping integrated, thus allow to use the standard component forming filter core instead of capping.That is, described filter core can comprise standarized component, such as filter medium, capping, stay pipe etc.; Meanwhile, depend on actual filter core purposes, the suitable capping with required by-passing valve and required jockey is assembled on described standarized component.
Accompanying drawing explanation
Read the explanation of following non-limiting way explaination in conjunction with the drawings, further feature and advantage of the present invention present clear, wherein:
Fig. 1 is the cross-sectional view of the axle that filter core according to the present invention defines along described filter core;
Fig. 2 is the amplification detail view of Fig. 1;
Fig. 3 be according to an embodiment of the invention, the filter unit cross-sectional view of axle to define along filter unit;
Fig. 4 is the cross-sectional view of the filter unit along the axle IV-IV shown in Fig. 3.
Detailed description of the invention
Filter unit 2 shown in Fig. 3 is for filtering fluid, such as fuel or oil filtration device, being especially intended to the filter for Diesel engine, is used in particular for the Diesel engine of automobile, truck, commerial vehicle or self-propelled work car.
Filter 2 comprises external shell, and it is defined by the ladle bowl 21 of beaker-type shape, and upper cover 22, and it is for the openend of closed ladle bowl 21.
Filter unit 2 comprises the entry conductor 211 for fluid to be filtered, and for filtering the delivery channel 212 of fluid; Described entrance and exit conduit 31,42 is preferably arranged on ladle bowl 21.
As shown in Figure 3, in the inner space defined by filter external shell, be provided with filter core 1, described filter core comprises filter medium 11, it can be pleated medium or depth media, and upper cover 12 and underseal lid 13, described capping utilizes known technology to be closely connected with filter medium, such as, by gummed, infrared welding etc.
Room in filter housings is divided into the first chamber 4 and the second chamber 3 by described filter core 1, and described first chamber 4 is limited by the inner space of filter medium 11 and capping 12,13, and described second chamber 3 is arranged in the room between housing and filter core.
As shown in Figure 1, bottom 13 has medium pore 131 and the packing ring 132 be arranged on described hole; Described medium pore 131 and described packing ring 132 are for assembling with tight and removable mode and stay pipe 23, and described stay pipe 23 is arranged on filter ladle bowl, as described below.
As depicted in figs. 1 and 2, upper cover 12 is provided with by-passing valve 14; Described valve is made up of sealer 141 and spring 143, and described sealer 141 has sealing the margin 142 on an end, and another end has spring base 144; Described spring base comprises groove, and it has suitable shape, to hold spring thread, and makes described screw thread remain in axial seat; Sealer 141 and spring 143 are assembled on valve seat, and described valve seat is located on the upper cover 12 of filter core.
According to the present invention, valve seat, sealer 141 and spring 143 etc. and by-passing valve 14 to be placed in outside filter core 1 on 3, to be separated by an axial distance with filter media 11.In the preferred embodiment shown in the drawings, by-passing valve 14 is by obtaining from capping 14 3 sleeve pipes 122 axially given prominence to outside filter core relative to the external of filter core capping 12, and by-passing valve 14 is assembled on the axial free terminal 123 of described sleeve pipe 122.
Correspondingly, the free terminal 123 of capping sleeve pipe is formed by having the end of of passage 125, and the internal diameter of described passage 125 is less than the internal diameter of sleeve pipe 122; The planar annular part obtained from the internal diameter of sleeve pipe 122 and the internal diameter of passage 125 represents valve sealing surface 121, and herein, sealer sealing the margin 142 is promoted by spring 143, closes to obtain valve.Correspondingly, sealer 141 is positioned on the axial end contrary with the end arranging spring base 144, and it comprises the end of 145, and this external diameter of the end of 145 is greater than the diameter of sealer middle body, is also greater than the diameter of passage 125; The annular section obtained from the end of and channel diameter represents sealer sealing the margin 142.
Be assembled in the process of filter core capping at by-passing valve, described by-passing valve and filter core capping embodiment all as depicted in figs. 1 and 2 configured, and the free terminal with the sealer of spring base 44 inserts through the passage 125 that sleeve pipe free terminal is the end of.Once sealer sealing the margin 142 contacts valve sealing surface 121, then spring 143 can be inserted on sleeve pipe last part 123, and assembles together with the spring base 144 of sealer.Therefore, spring element is compressed in its installation site, promotes, and pull sealer against sleeve pipe free terminal, through its free terminal, relative to valve seat axially outwardly, makes sealer sealing the margin 142 be pushed to valve base surface 121 and promotes.
Described sealer and valve seat size, and there is change in size in spring performance (elastic modelling quantity, the diameter of thread, thread-whirling number etc.), to guarantee that valve closes (the sealer sealing the margin through contacting with valve sealing surface), until reach or exceed threshold pressure value.Described valve is made up of the pressure differential between filter core exocoel 3 and inner chamber 4.In illustrated specific embodiment, when from filter core exocoel 3, medium 11 flows to filter core exocoel 4 to fluid after filtration, if when the pressure of exocoel 3 reaches a predetermined value beyond the pressure of filter core inner chamber 4, described outer cavity pressure makes sealer 141 axially move to its open position (sealer sealing the margin 142 is separated with valve base surface 121 herein) from its detent position (sealer sealing the margin 142 contacts with valve sealing surface 121 herein), fluid passage being opened to inner chamber 4 from exocoel 3, allowing fluid flowing and forced path without the need to flowing through filter medium 11.
According to an alternate embodiment of the present invention, flow direction can be from the inner chamber of filter core to external cavity, and in this case, when chamber pressure exceeds threshold value than outer cavity pressure, described valve is configured to allow valve to open.
Independent of the direction of fluid stream, by-passing valve 14 is placed on the outside of filter core 1, to be separated by an axial distance with filter medium 11.Due to this scheme, the outside 3 of filter core 1 can not by the impact of the existence of by-passing valve 14 with the sealing reliability of inner side 4; In fact, described valve 14 is included on filter core 1, avoids on filter core and has any additional sealing element or another separate part; And additional packing ring, make the cost of cost lower than prior art of this programme further, this is because expensive parts, as packing ring, to be omitted.In addition, described scheme allows the inner chamber 4 of filter core and medium 11 to have correct size, this is because by-passing valve is external relative to medium, thus the size of described medium is no longer by the obstruction of by-passing valve.Further, the direction of fluid stream is not departed from because of the existence of valve, because this ensure that uniform fluid stream in filter core.
In a preferred embodiment, connect the outside that tooth 126 is radially located at sleeve pipe 122, connect for the filter core on filter unit 2.
As mentioned above, filter core 1 is removable on filter unit 2.In the embodiment shown in Fig. 3 and Fig. 4, filter unit comprises the shell with ladle bowl 21, described ladle bowl is closed an axial end, opening at another end, described open end is closed by covering 22, such as by being located at the male thread portion covered, it is suitable for being connected with the female thread portion be located on ladle bowl.
In the closed end of ladle bowl 21, be provided with the entry conductor 211 for entering unfiltered fluid, and for discharging the delivery channel 212 filtering fluid.Entry conductor 211 is arranged prejudicially relative to filter shaft, and delivery channel 212 and described axle are arranged with one heart.Alternatively, entry conductor can be concentric, and delivery channel can be eccentric relative to filter housings.Further, according to an alternate embodiment, entrance and/or delivery channel can be arranged on strainer cover 22, instead of on ladle bowl.
The stay pipe 23 arranged with one heart relative to filter housings is connected on delivery channel 212.Described pipe has open end and closed end; In open end, being provided with jockey 231, i.e. threaded portion, being connected with filter ladle bowl 21 for allowing the free terminal of stay pipe.At the mid portion of described tank, be provided with permeate portion 232 with holes, it is communicated with the fluid between inner side for allowing the outside of described pipe, and is thus connected with the opening free terminal of stay pipe.From the free terminal 233 that pipe is closed, permeable pin 234 is protruding outside towards the axis of pipeline 23; Permeable needle set has suitable profile, even if be assembled on calibration hole to allow fluid to flow through described pin when described pin.Due to this shape, ensure that, between pin 234 and receiving opening, there is space/groove, with the passage allowing fluid to flow through described space/groove.In the embodiment shown in Fig. 3 and Fig. 4, permeable pin 234 presents cross shaped head.
Filter core 1 is connected on described lid 22 through the suitable tooth 221 be located on strainer cover 22, and the size of described tooth 221 allows to carry out buckle with the tooth 126 be located on filter core 1 and is connected.
Once the lid with filter core is positioned at it on the installation site of filter ladle bowl 21, the packing ring 132 be then located on the underseal lid 13 of filter core 1 is shelved as contacting with stay pipe 23, especially contact with the non-permeate portion of its outer surface, to guarantee the compactness between the exocoel 3 that filter core 1 defines and inner chamber 4.Meanwhile, permeable pin is inserted in the opening 127 obtained by filter core capping sleeve pipe 122.Due to this configuration, to insert and when being positioned on its operating position, filter core 1 remains on its middle position relative to ladle bowl 21 at filter core; Described certralizing ability is guaranteed by the scheme of simple and inexpensive, the opening 127 such as obtained by the sleeve pipe 122 of filter core capping 12, and from the pin 234 that stay pipe free terminal extends.In addition, because stay pipe 23 is connected on filter ladle bowl 21, replaceable cartridge is simplified, and this is because it is not included in filter core as field-replaceable unit.
Owing to permeating the cross shaped head of pin 234, obtain four paths, between described pin 234 and the opening 127 from filter capping sleeve pipe 122.When bypass valve 14 is positioned on its open position, described path achieves the fluid passage from exocoel 3 to inner chamber 4; For guaranteeing to realize the fluid passage between permeable pin 234 and filter core inner chamber 4, closing between free terminal 233 at filter element upper cover 12 and stay pipe and being provided with axial space.
Operationally, unfiltered fluid enters exocoel 3, through entry conductor 211.Afterwards, fluid flows through filter medium 11, allows the impurity to unfiltered fluid carries to be separated.Filtered fluid enters the inner chamber 4 of filter core subsequently, through the permeable part 232 of stay pipe, thus through the open end 231 of stay pipe, discharges from delivery channel 212.
If the pressure that the pressure of exocoel 3 exceeds inner chamber 4 reaches a predetermined value, such as, because the obstruction of filter medium causes, pressure then against by-passing valve effect makes sealer sealing the margin 142 be separated from valve sealing surface 121, thus realize unfiltered fluid from exocoel 3 to the passage of inner chamber 4, and make it not flow through filter medium.Once fluid is through the space sealer sealing the margin 142 and valve seal edge, then fluid flows through the fluid passage that permeable pin 234 is formed with opening 127; Subsequently, unfiltered fluid flows through the axial space between filter core upper cover 12 and support member closed end 233, and enters filter core inner chamber 4; Afterwards, filtered fluid to discharge from the open end 231 and delivery channel 212 of stay pipe.
When cavity pressure is down to below threshold pressure, spring force overcomes two chambeies 3, pressure differential between 4, thus allow sealer 141 to slide off valve seat, and, due to the contact between sealer sealing the margin 142 and valve base surface 121, valve remains in its closing position, and prevents the connection between two chambeies.
The present invention should be contemplated that and comprise multiple improvement and distortion, and these are all within theory scope of the present invention.
In addition, all details all can by other technologies equivalent elements substitute.
In practice, the material used and shape and size, all can change as required, and not depart from the protection domain of claim.
Claims (9)
1. filter core (1), comprise filter media (11), the first capping (12) and the second capping (13), described capping is connected in the axial end of described filter medium with compact fashion, described first capping (12) comprises by-passing valve (14), described by-passing valve comprises the sealer (141) with sealing the margin (142), and the spring element (143) for impelling the sealing the margin of described sealer (142) to prop up valve sealing surface (121); When the fluid pressure that the fluid pressure acting on (3) outside described filter core exceeds (4) inside it reaches a predetermined value, described sealer, described spring element are communicated with inner side (4) for making the outside of described filter core (3) with described valve sealing surface; Wherein, described by-passing valve (14) is positioned on the outside (3) of described filter core (1), with described filter medium (11) at a distance of axial distance.
2. filter core according to claim 1 (1), is characterized in that, described first capping comprises (3) axially extended sleeve pipe (122) outside described filter core, and described by-passing valve is arranged on described sleeve pipe (122).
3. filter core according to claim 2 (1), it is characterized in that, the axial free terminal (123) of described sleeve pipe comprises the edge and passage (125) that form valve sealing surface (121), wherein, described sealer (141) can slide along described passage (125), and described spring element (143) impels described sealer sealing surfaces (142) to prop up described valve sealing surface (121).
4. filter core according to claim 3 (1), is characterized in that, described spring element (143) is connected with described sealer (141) in side, and abut against be arranged on described sleeve pipe (122) free terminal (123) on edge.
5. filter core according to claim 1 (1), is characterized in that, described first capping (12) comprises radial direction and is arranged on the outside jockey (126) of described by-passing valve (14).
6. filter unit (2), comprise housing, described housing has an axial end and closes, the ladle bowl (21) of another axial end opening, described open end lid (22) is closed, described filter unit comprises filter core (1) further, the inner space that described shell defines is separated into the first chamber (3) and the second chamber (4) by described filter core, described first chamber communication of fluid entrance (211), described second chamber (4) communication of fluid outlet (212), described filter core (1) comprises filter medium (11), first capping (12) and the second capping (13), described capping is connected to the axial end of described filter medium with compact fashion, described first capping comprises by-passing valve (14), described by-passing valve comprises the sealer (141) and spring element (143) with sealing the margin (142), described spring element is used for impelling described sealer sealing the margin (142) to prop up valve sealing surface (121), when act on the fluid pressure outside described filter core exceed its fluid inside pressure reach a predetermined value time, described sealer, described spring element and described valve sealing surface are used for the outside of described filter core (1) (3) is communicated with inner side (4), wherein, described by-passing valve (14) is positioned at the outside of described filter core, with described filter medium (11) at a distance of axial distance.
7. filter unit according to claim 6 (2), it is characterized in that, described filter core first capping (12) comprises (3) axially extended sleeve pipe (122) outside described filter core, described by-passing valve is arranged on described sleeve pipe, and stay pipe (23) is arranged on ladle bowl, described stay pipe has connection end (231), for connecting the stay pipe be positioned on described ladle bowl, also have for the fluid passage between the outside of described stay pipe and inner side, the permeable part of central authorities with holes (232), and there is the closed free terminal (233) of permeable pin (234), when described filter core is positioned on its installation site, described permeable pin is used for resting on the opening (127) from described filter core sleeve pipe (122), and when described by-passing valve (14) is positioned on its open position, described pin (234) allows to realize the fluid passage inside described by-passing valve (14) and described filter core between (4).
8. filter unit according to claim 7 (2), is characterized in that, described permeable pin (234) presents cross shaped head.
9. filter unit according to claim 7 (2), it is characterized in that, described filter core first capping (12) comprises radial direction and is placed in the outside jockey (126) of described by-passing valve (14), and this jockey can be connected with each jockey (221) be arranged on described strainer cover (22).
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| CN201310568718.6A CN104623949B (en) | 2013-11-15 | 2013-11-15 | Filter core and filter unit |
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| CN201310568718.6A CN104623949B (en) | 2013-11-15 | 2013-11-15 | Filter core and filter unit |
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| CN104623949B CN104623949B (en) | 2019-06-04 |
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| CN107029465A (en) * | 2016-01-12 | 2017-08-11 | 曼·胡默尔有限公司 | Filtration system, closing element and filter element |
| CN107050958A (en) * | 2017-05-16 | 2017-08-18 | 成都易态科技有限公司 | Filter core |
| CN109011779A (en) * | 2018-09-06 | 2018-12-18 | 河南航天液压气动技术有限公司 | A kind of filter and its element kit |
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| CN102223936A (en) * | 2008-11-26 | 2011-10-19 | Hydac过滤技术有限公司 | Filter device and filter element |
| CN101539045A (en) * | 2009-04-13 | 2009-09-23 | 奇瑞汽车股份有限公司 | Gas and oil separating plant for internal combustion engine |
| 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 |
| CN203648186U (en) * | 2013-11-15 | 2014-06-18 | 上海索菲玛汽车滤清器有限公司 | Filter element and filter unit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105351723A (en) * | 2015-12-11 | 2016-02-24 | 德文能源股份有限公司 | Lubricating oil filter device |
| CN107029465A (en) * | 2016-01-12 | 2017-08-11 | 曼·胡默尔有限公司 | Filtration system, closing element and filter element |
| CN107050958A (en) * | 2017-05-16 | 2017-08-18 | 成都易态科技有限公司 | Filter core |
| CN107050958B (en) * | 2017-05-16 | 2023-05-09 | 成都易态科技有限公司 | Filter element |
| CN109011779A (en) * | 2018-09-06 | 2018-12-18 | 河南航天液压气动技术有限公司 | A kind of filter and its element kit |
| CN109011779B (en) * | 2018-09-06 | 2021-04-30 | 河南航天液压气动技术有限公司 | Filter and filter element assembly thereof |
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