CN203783780U

CN203783780U - Filter

Info

Publication number: CN203783780U
Application number: CN201320720454.7U
Authority: CN
Inventors: 乔基奥·基隆迪
Original assignee: Shanghai Ou Fei Cleaner Co Ltd
Current assignee: Shanghai Ou Fei Cleaner Co Ltd
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2014-08-20
Anticipated expiration: 2023-11-15

Abstract

A filter (1) comprises an outer shell, and the outer shell is provided with a tank shell (11) and a cover (12) sealing the open end of the tank shell. The filter further comprises an inlet (2) used for fluid to be filtered to flow in, an outlet (3) for filtered fluid to flow out and a filter element (13), and the filter element is used for separating an inner chamber of the outer shell into a first cavity (14), a second cavity (15) and a third cavity (16). The first cavity (14) is communicated with the inlet (2), the second cavity (15) is communicated with the outlet (3), and the third cavity (16) is formed in the bottom side of the tank shell and used for collecting water. A spring device (17) is arranged between the filter element (13) and the sealed tail end of the tank shell (11) to push the filter element (13) towards the cover (12), and the filter element and the cover are separated through a far end piece (4).

Description

Filter

Technical field

The present invention relates to a kind of filter, relate in particular to the filter for filtering the fuel of driving application or hydraulic applications, described driving application examples is as automobile, lorry, commercial car and working machine.

Background technique

Known ground, the filtration of fuel normally utilizes filter to realize, and filter comprises shell, and described shell has ladle bowl and lid, and described cap seal is closing the opening end of described ladle bowl, the outlet that described shell is provided with the entrance of fluid to be filtered and has filtered fluid; And filter core, for the interior chamber of shell is subdivided into three different chambeies, wherein the first chamber is communicated with entrance, and the second chamber is communicated with outlet, and the 3rd chamber that is arranged on shell bottom side is suitable for the collection of water.

By this way, the fluid that flows to outlet from filter inlet is forced to the filter medium of flowing through, thereby the impurity that may contain in fluid is stayed in filter medium, and will wait that the water being collected in described the 3rd chamber separates.

Typical filter core comprises tubular filtering medium, for example, and pleat formula filter media or depth media, and be fixed with two dunnages at the relative end of filter medium.

At least one dunnage is typically provided with the central opening preferably aliging with the longitudinal axis of filter medium, and the interior chamber 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 chamber of filter core or be communicated with the outlet of filtering fluid, in this case, is set to from outward inwardly through filter medium.

Conventionally, not filtering cavity and the sealing between filtering cavity be the seal ring by being arranged on lid inner side, and the spring of filter core realizes for promoting towards described lid.Conventionally, described filter core is provided with capping, and described capping has axially extended neck shape portion, its shape and material be suitable for by described annular seal against guaranteeing not filtering cavity and the compact type between filtering cavity.

Known technology exists some defects.First,, due to the inner side of strainer cover and the plane tolerance of filter core capping neck shape portion, can not guarantee reliable sealing effect completely; And due to these difference, whole profiles that can not ensure capping neck shape portion all with uniform pressure against ring filter core.

And described neck shape portion cannot be processed into has relevant height; The reason that produces this restriction is that conventionally leading shape portion is a part for capping, and it obtains by carry out drawing step on sheet material.Described drawing technique allows to process the neck shape portion with limited height, and sometimes, this is highly inadequate, for example, in the time needing larger channel part (due to high fluid flow valuve).

In addition, in the filter of some kinds, must provide removable sleeve part, as include but not limited to the electronic equipment of moisture sensor, and/or heater, and/or temperature transducer, and/or obstruction sensor etc.

These parts normally have " throughout one's life " to use, that is, except breaking down suddenly, can use at the whole life period of machine.On the other hand, filter must be changed after predetermined period, that is, and and in the time reaching obstruction level.Therefore,, in described periodicity substitutes, " old " filter takes off from electronic component, then " new " filter is arranged on electronic component.Change after filter, in the routine work of filter, guarantee that the sealing between filter core and electronic equipment is very important, like this, at filtering cavity not with just can there be tightness between filtering cavity.

Known seal arrangement generally includes a filter core neck shape portion, by above-mentioned axial promotion against ring packing ring; Correspondingly, guarantee between two chambeies, with and and electronic component between reliable tightness be very difficult and expensive.In fact, caused the flatness of the shell inner side that is provided with ring washer for the existence in the distortion hole of electronic unit passage.

An object of the present invention is, provide a kind of simple, reasonable and scheme at a low price, to overcome above-mentioned prior art defect.

Above-mentioned purpose realizes by the feature of the present invention comprising in independent claims.Dependent claims is sketched the contours of preferred and/or especially preferred aspect of the present invention.

Model utility content

Especially, the invention provides a kind of filter, it comprises shell, described shell has the lid of the opening end of ladle bowl and the described ladle bowl of sealing, described filter is further provided with the entry conductor for fluid to be filtered, with the delivery channel for filtering fluid, also comprise filter core, the interior chamber of shell is separated into the first chamber by described filter core, the second chamber and the 3rd chamber, described the first chamber is communicated with described entrance, described the second chamber is communicated with described outlet, described the 3rd chamber is arranged on the bottom side of described ladle bowl, for the collection of water, wherein, between described filter core and the closed end of described ladle bowl, be provided with spring assembly, to promote described filter core towards described lid.According to the present invention, described filter core keeps separating by far-end part and described lid.

Due to this scheme, additional far extremity piece has guaranteed that far-end part and filter core capping have good plane tolerance, and is independent of the defect of cap, and therefore makes filter core abut against equably its seat.In addition, additional far extremity piece has been realized simple filter core capping shape, i.e. plane shape, and without additional production stage, sheet metal is drawn.Further, this scheme allows the free chosen distance of energy between filter core and cap, and therefore can freely determine the cross section passage between these two parts.

Another aspect of the present invention is, far-end part comprises from the axially extended neck shape of base portion, described base is for keeping contacting with the inner side of strainer cover, and described neck shape portion comprises at least one passage, described passage offers the filtering fuel flowing out from the filter medium of filter core, or flows to the not filtering fuel of filter medium.

This scheme has further realized the simple optional feature with base and neck shape portion, and described neck shape portion defines the distance between filter core capping and strainer cover.Due to its shape, guaranteed against flatness, this be because far-end part base overcome cap may by shape defect.In addition,, by being located at the channel size setting in neck shape portion, also can ensure to have fluid cross-section passage (with liquid speed and flow direction thus) accurately.

Another aspect of the present invention is, described filter core comprises two cappings that are arranged in filter medium axial end, wherein, at least one capping comprises opening, described opening has the seal arrangement being arranged on wherein, described seal arrangement, for radially pushing Central boss to, is guaranteed the sealing between the first chamber and the second chamber.

Owing to not relating to the tolerance of strainer cover and filter core capping, therefore, this scheme has realized not filtering cavity and the reliable sealing effect between filtering cavity.In fact, Sealing is not axialmode, depends on the power of spring, axial surface etc., but depend on unique contact surface of axle sleeve, it is radial mode, and filter core is incoherent about the actual axial position of other filter components.

Another aspect of the present invention is, Central boss is the electronic equipment that comprises moisture content detection device.

This scheme allows electronic unit " throughout one's life " in the routine work of exchangeable filter to be connected on exchangeable filter with reliable fashion, guarantees not filter and the reliable sealing effect between filtering cavity simultaneously.In the time replacing filter, electronic equipment takes off from " old " filter, then is assembled on " new " filter.Due to the radial force of the cylindrical part of seal arrangement to electronic equipment, once described equipment is positioned at its assembled state, realize the sealing effect between chamber.Therefore, the insertion of electronic equipment or extraction can be carried out simple and reliablely.

Preferably, strainer cover is provided with central hole, and described hole is for allowing the insertion of electronic equipment, and described equipment, for passing filter core capping in tight mode, is placed on moisture sensor on the precalculated position with respect to the 3rd chamber.

This scheme makes the electronic equipment that comprises moisture sensor can insert the upside of filter or can extract from this upside, guarantees filtering cavity and the not reliable sealing effect between filtering cavity simultaneously.As is known, because the space under bonnet of motor car is fully utilized, be therefore difficult to process the electric wire being arranged under described parts.Due to this reason, can be all electric/electronics the electric wire that is connected to top is provided; And this programme allows such configuration.

Another aspect of the present invention is, the external diameter of the capping of filter core is roughly corresponding to the internal diameter of ladle bowl.This scheme has realized the certralizing ability of filter core with respect to the axle of filter head housings.

Another aspect of the present invention is, entrance and/or delivery channel are arranged on electronic equipment.

This scheme allows replaceable cartridge to be removed, and does not interrupt the connection of entrance and/or outer pipe, because described pipe is connected on electronic equipment.

Preferably, entrance and/or delivery channel are arranged on strainer cover.

Another aspect of the present invention is, the base of far-end part has round-shaped, contacts with at least a portion of the internal surface of strainer cover for keeping.

This scheme allows far-end part to continue but the interior table against contacted filter lid safely, to most retracting spring applied force equably of described internal surface.

Brief description of the drawings

The explanation of reading in conjunction with the drawings following non-limiting way explaination, further feature and advantage of the present invention present clear, wherein:

Fig. 1 is the cross-sectional view of the axle that defines along the circular cylindrical shell of described filter of filter according to the present invention.

Embodiment

Filter 1 shown in the drawings is diesel fuel filter, is intended to for diesel engine, in particular for the diesel oil of automobile, truck, commerial vehicle or self-propelled work car.

Filter 1 comprises shell, and it is by the ladle bowl 11 of beaker shape, and defines for the upper cover 12 that seals ladle bowl 11 1 opening ends.

Filter 1 comprises the entry conductor 2 for diesel oil to be filtered, for filtering the delivery channel 3 of diesel oil, and for accumulating in the discharge tube 6 of water in the 3rd chamber 16.

Described entrance and exit conduit 2,3 is arranged on electronic equipment 5, and described electronic equipment 5 is connected on filter in replaceable mode, by screw device (not shown).In an alternate embodiment, entrance and/or outlet can be arranged on covers on 12, specifically depends on the interior layout of filter 1.

Electronic equipment 5 comprises axle sleeve part 51, and its inside comprises the fuel channel that connects entry conductor 2 and outlet 52, and described outlet 52 is radially arranged in described axle sleeve part 51.In addition, electronic equipment comprises 53 and intermediate portion 54, and the external diameter of described intermediate portion 54 is greater than the diameter of axle sleeve part 51, therefore, provides annular space 55.Described space is connected with delivery channel 3 fluids.

On the bottom side of electronic unit, be provided with moisture sensor 56, it comprises two sensing needles, is connected with electron plate, be preferably located on device head 53, thereby in the time that moisture content contacts these pins, described electronic equipment 5 sends signal, or alternatively, opens switch.

According to another embodiment, electronic unit comprise be positioned at 53 or axle sleeve part 51 on heater, it heats to fuel knownly in the time reaching specific temperature conditions.In addition, electronic equipment 5 can be provided with temperature transducer, i.e. NTC probe; All these parts all can be connected to above-mentioned electron plate, for incoming/outgoing management.

In the inner space of defining at filter housing, be provided with filter core 13, described filter core comprises filter medium 133, it can be pleat formula medium or depth media, and upper cover 131 and underseal lid 132, described capping utilizes known technology to be closely connected with filter medium, for example, by gummed, infrared welding etc.

The interior chamber of filter head housings is divided into the first chamber, the second chamber and the 3rd chamber by described filter core 13, and described the first chamber is by inner space and capping 131,132 restrictions of filter medium 133, and described the second chamber 15 is arranged in the chamber between ladle bowl and filter medium; In addition, the 3rd chamber 16 is arranged on the bottom side of filter, is communicated with the second chamber 15, is suitable for accumulating the water being separated by filter medium 133.

Upper cover 131 is provided with the central hole that is holding packing ring 136, for being inserted in the axle sleeve part 51 of electronic equipment 5, and provides with the tight of described axle sleeve part and is connected, thereby realize the sealing between first and second chamber 14,15.Additionally, the external diameter of upper cover 131 is roughly corresponding to the internal diameter of ladle bowl 11, to realize the certralizing ability of filter core 13 with respect to filter head housings 11.

Underseal lid 132 also comprises the central hole that is holding packing ring 137, to realize the tightness of upper cover between first and second chamber 14,15 131 and axle sleeve part 51.

As mentioned above, be provided with the 3rd chamber 16 in the bottom side of ladle bowl 11, for accumulating of water.In this chamber 16, on precalculated position, be provided with the pin 56 as the moisture sensor parts of electronic equipment 55.Correspondingly, strainer cover is provided with central hole 121, and described hole is for allowing the insertion of electronic equipment, and described equipment, for passing filter core capping 131,132 in tight mode, is placed on moisture sensor on the precalculated position with respect to the 3rd chamber.In the time that thereby water reaches certain level contact pin 52, described electronic equipment 5 sends signal, or opens switch.Additionally, flushing valve 6 is set to be connected with the 3rd chamber 16, to allow water to discharge from described chamber.

In described the 3rd chamber, between the closed end and filter core 13 of ladle bowl 11, be also provided with spring 17, for pushing away filter core 13 towards strainer cover 12.

According to the present invention, between described lid and described filter core, be provided with far-end part 4, so that remaining, filter core 13 separates with shell also at a distance of intended distance.

According to one particular embodiment of the present invention, described far-end part 4 comprises neck shape portion 42, and it has several passages 43 for filtering fluid, and described neck shape portion merges from base position, described base can have round-shaped, contacts with the inner side of strainer cover 12 for keeping.

The existence of far-end part allows the space between filter core 13 and strainer cover 12 to have correct size, described distance is estimable, for example consider fluid dynamics factor (, for around filter medium 133, with fuel of uniform pressure/velocity distribution etc.).According to technical need/filter size, those skilled in the art can select to be arranged on quantity and the size of the passage 43 in neck shape portion 42.

Above-mentioned configuration forms fuel filter, and it has entry conductor 2, and this entry conductor 2 is arranged on electronic equipment 5, and warp beam sleeve part 51 is connected to outlet passage 52, and this outlet passage 52 is arranged on the entrance that inwardly enters filter core 13 in the first chamber 14; Correspondingly, the second chamber 13 is connected to the annulus 55 of electronic equipment 5 through being arranged on passage 43 on far-end part 4, and described annulus fluid is connected to delivery channel 3.

Therefore, in the preferred embodiment described in Fig. 1 and above explanation, entry conductor 2 is connected to the first chamber 14, and the second chamber 13 is connected to delivery channel 3.

In the operation element of filter 1, unfiltered fuel enters filter through entry conductor 2, through being arranged on the passage in axle sleeve part 51, from exporting 52 outflows, and enters in the first chamber 14 of defining filter core 13 inside.

According to a preferred embodiment, if electronic equipment 5 is provided with heater, in the time reaching predetermined temperature, before fuel enters the first chamber 14, described heater heats fuel.

Therefore, fuel is through filter medium 133, and filter medium provides particle separation, fuel purifying to remove any solid impurity.Additionally, filter medium 133 provides the separation of water, for example, by coalescent effect.Therefore, the water that enters the second chamber 13 presents large form of dripping, and because the density of water is greater than fuel density, described water droplet precipitates and is collected in the 3rd chamber 16, is positioned on the bottom side of ladle bowl 11.Thereby in the time that accumulated water reaches the described water contact of certain level moisture sensor pin 56, electronic equipment 5 sends signal, or alternatively, switch opens.

In the time that operator recognizes the water level having reached, it will promptly empty through the opening of flushing valve 6 water accumulating in the 3rd chamber.

The filtered fuel entering in the second chamber passes through the passage 43 being arranged on far-end part subsequently, subsequently through the annular space 55 being arranged in electronic equipment 5, from delivery channel 3, discharges.

Once filter must be changed, that is, due to filter blocks, operator pulls down electronic equipment from " old " filter,, by the screw thread combination of contact fixing device, and replace this filter with " new " filter, and through being arranged on central hole 121 on " new " filter insertion electronic equipment 5, as long as electronic equipment 5 arrives its mounting point, " new " filter can engage with electronic equipment 5,, passes through screw fixing device that is.On this position, the tightness between chamber 14,15 is to guarantee by the packing ring 136,137 of the axle sleeve part 51 generation effects to described electronic equipment 5.

Obviously, those skilled in the art can apply various improvement in essence to above-mentioned filter 1 technology of making, and do not depart from the scope of the present invention that claim is described.

For example, object of the present invention can be used on filter, take the fuel direction from outside to inside for filter medium; In this case, not filtering fuel chamber will be served as in the second chamber, and filtering fuel chamber will be served as in the first chamber, and the passage being arranged on far-end part will be applicable to not filtering fuel stream.

According to another embodiment of the present invention, on strainer cover 12, be provided with entrance and exit conduit.

Alternatively, the moisture sensor of equipment can be configured to, and uses the substituting known technology detecting for moisture content, that is, and and single electrode device, or unsteady magnetic tablet.

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 be equal to key element by other technologies and substituted.

In practice, the material using and shape and size, all can change as required, and do not depart from the protection domain of claim.

Claims

1. filter (1), it comprises shell, described shell has the lid (12) of the opening end of ladle bowl (11) and the described ladle bowl of sealing, described filter is further provided with the entry conductor (2) for fluid to be filtered, with the delivery channel (3) for filtering fluid, also comprise filter core (13), described filter core is for being separated into the first chamber (14) by the interior chamber of described shell, the second chamber (15) and the 3rd chamber (16), described the first chamber (14) is communicated with described entry conductor (2), described the second chamber (15) is communicated with described delivery channel (3), described the 3rd chamber (16) is arranged on the bottom side of described ladle bowl, for the collection of water, wherein, between described filter core (13) and the closed end of described ladle bowl (11), be provided with spring assembly (17), to promote described filter core (13) towards described lid (12), it is characterized in that, described filter core keeps separating by far-end part (4) and described lid.

2. filter according to claim 1 (1), it is characterized in that, described far-end part (4) comprises from base (41) axially extended neck shape portion (42), described base contacts with the inner side of described strainer cover (12) for keeping, and described neck shape portion comprises at least one passage (43), described passage offers the filtering fuel flowing out from the filter medium of described filter core, or flows to the not filtering fuel of described filter medium.

3. filter according to claim 1 (1), is characterized in that, described filter core comprises two cappings (131 in the axial end that is arranged on described filter medium, 132), wherein, at least one capping comprises opening (134,135), described opening has the seal arrangement (136 being arranged on wherein, 137), described seal arrangement is for radially promoting against Central boss (5,51), to guarantee the sealing between described the first chamber and the second chamber (14,15).

4. filter according to claim 3 (1), is characterized in that, described Central boss is the electronic equipment (5) that comprises moisture content detection device (52).

5. filter according to claim 4 (1), it is characterized in that, described strainer cover (12) is provided with central hole (121), described hole is for allowing the insertion of described electronic equipment, described electronic equipment is for passing described filter core capping (131 in tight mode, 132), moisture sensor is placed on the precalculated position with respect to described the 3rd chamber (16).

6. filter according to claim 3 (1), is characterized in that, the external diameter of the capping (131) of described filter core (13) is roughly corresponding to the internal diameter of described ladle bowl (11).

7. filter according to claim 4 (1), is characterized in that, described entrance and/or delivery channel (2,3) are arranged on described electronic equipment (5).

8. filter according to claim 1 (1), is characterized in that, described entrance and/or delivery channel (2,3) are arranged on described strainer cover (12).

9. filter according to claim 2 (1), is characterized in that, the base (41) of described far-end part has round-shaped, contacts with at least a portion of the internal surface of described strainer cover (12) for maintenance.