CN205287841U - Filter core and water purifier - Google Patents

Abstract

The utility model relates to a filter core and water purifier, filter core include casing (100), be formed with leading filtering area (200), reverse osmosis filter in casing (100) and distinguish (300) and rearmounted filtering area (400), through leading filtering area (200) filterable rivers get into reverse osmosis filter distinguishes (300), and the dense log raft play that reverse osmosis filter district (300) produced casing (100), the pure water gets into discharge again after filtering in rearmounted filtering area (400) casing (100). This filter core that openly provides can also carry out leading filtration to rivers and filter with rearmounted when can realize the reverse osmosis filter mode in a casing to realize the multiple filtration of water, the filter effect is good, and the simple structure of a casing maintains the convenience, especially can be used for producing the water purifier of straight drinking water.

Description

Filter element and water purifier

Technical field

It relates to water purification field of components, particularly relate to a kind of filter element and use the water purifier of this filter element.

Background technology

Along with the continuous lifting of living standards of the people, the public also promotes gradually for the requirement of water quality. Wherein this makes the use of water purifier popularize gradually. In correlation technique, filter element is generally has single filtering function, so in order to complete multi-filtering, it is necessary to arrange multiple filter element in water purifier, safeguards that space that is inconvenient and that make water purifier is bigger.

Utility model content

For overcoming Problems existing in correlation technique, the disclosure provides a kind of filter element and uses the water purifier of this filter element.

First aspect according to disclosure embodiment, a kind of filter element is provided, including housing, prefilter district, osmosis filtration district and rearmounted filtering area it is formed with in described housing, the current filtered by described prefilter district enter described osmosis filtration district, and the concentrated water drainage that described osmosis filtration district produces goes out described housing, pure water enters after filtering in described rearmounted filtering area and is then exhausted from described housing.

Second aspect according to disclosure embodiment, it is provided that a kind of water purifier, is provided with the filter element that the disclosure provides in described water purifier

Embodiment of the disclosure that the technical scheme of offer can include following beneficial effect: the filter element that the disclosure provides can realize while osmosis filtration mode in a housing, current can also be carried out prefilter and rearmounted filtration, thus realizing the multi-filtering of water, filter effect is good, and the simple in construction of a housing is easy to maintenance, it is particularly possible to for producing the water purifier of direct drinking.

It should be appreciated that it is only exemplary and explanatory that above general description and details hereinafter describe, the disclosure can not be limited.

Accompanying drawing explanation

Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meets and embodiment of the disclosure, and for explaining the principle of the disclosure together with description.

Fig. 1 is the internal sectional structure schematic diagram of the filter element according to an exemplary embodiment.

Fig. 2 is the structure for amplifying schematic diagram in A portion in Fig. 1.

Fig. 3 is the structure for amplifying schematic diagram in B portion in Fig. 1.

Detailed description of the invention

Here in detail exemplary embodiment being illustrated, its example representation is in the accompanying drawings. When as explained below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element. Embodiment described in following exemplary embodiment does not represent all embodiments consistent with the disclosure. On the contrary, they only with in appended claims describe in detail, the disclosure some in the example of consistent apparatus and method.

As shown in Figure 1 to Figure 3, the disclosure one exemplary embodiment provides a kind of filter element, this filter element includes housing 100, wherein it is formed with prefilter district 200, osmosis filtration district 300 and rearmounted filtering area 400 in this housing 100, the current filtered by prefilter district 200 enter osmosis filtration district 300, and the concentrated water drainage that osmosis filtration district 300 produces goes out housing 100, pure water enters after filtering in rearmounted filtering area 400 and is then exhausted from housing 100.

So, the filter element that the disclosure provides can realize while osmosis filtration mode in a housing 100, current can also be carried out prefilter and rearmounted filtration, such prefilter can avoid the consumption to osmosis filtration part of the impurity more former water, promote the service life of osmosis filtration part, the core filtration members in water purifier it is generally due to osmosis filtration part, relatively costly. Therefore the use cost of water purifier is also reduced. It addition, the filter effect of water can be increased further by rearmounted filtration, it is particularly possible to for producing the water purifier of direct drinking. Therefore, additionally, the filter element that the disclosure provides holds multiple filtering area by using a housing 100, it is not only simple in structure, and can reduce and the junction point on water purifier water route, only this filter element need to be dismantled from water purifier when safeguarding, it is to avoid the probability leaked, and easy to operate, practical.

In the present embodiment, in order to complete prefilter, prefilter district 200 has first water inlet the 210, first outlet 220 and the prefilter part 230 between this first water inlet 210 and first outlet 220, this prefilter part 230 can be that PP cotton layer 231 is to filter thicker large granular impurity, it can in addition contain be sequentially overlapped the first activated carbon layer 232 along water (flow) direction, thus increasing prefilter effect further. In other embodiments, it is also possible to other kinds or more multi-layered prefilter part are set.

In an embodiment, in order to ensure the effect of osmosis filtration, osmosis filtration district 300 includes for passing through to be placed in pressue device housing 100 outside and connected the second water inlet 310 of the first outlet 220. Namely, current after filtering from preposition filtering area 200 can at outside pressue device, as entered back in the anti-filtration and infiltration district 200 in housing 100 under the supercharging of water pump, thus playing the effect of osmosis filtration better, pure water is made to obtain enough power by osmosis filtration part, thus ensureing cleaning water. Wherein external pressurizer can be any pressue device well known in the art.

In the present embodiment, osmosis filtration district 300 has reverse osmosis membrane 320 using as osmosis filtration part, and the dense water out 330 connected with the dense water side of this reverse osmosis membrane 320, namely can will discharge outside housing 100 between dense water, and and the pure water side of reverse osmosis membrane 320 connect with rearmounted filtering area 400 housing 100 is internal, thus making full use of the inner space of housing 100.

In the present embodiment, in order to complete rearmounted filtration, rearmounted filtering area 400 has rearmounted filtration members 410, and this rearmounted filtration members 410 can include the second active carbon layer 411, to adsorb soluble impurity and the abnormal flavour etc. of water quality further, promote the water purifying effect after filtering further. Wherein, the influent side of this rearmounted filtration members 410 connects inside housing 100 with the pure water side in osmosis filtration district 300, and water outlet side connects with the pure water outlet 420 arranged on housing 100, and the current to realize integral filter core process. Wherein rearmounted filtration members 410 can also be other kinds of filtration members.

In order to reasonable Arrangement is positioned at multiple filtering areas of a housing 100, avoid housing 100 owing to having multiple filtering area and excessively thick, in the present embodiment, axial arranged along housing 100 of prefilter district 200 and rearmounted filtering area 400, so can avoid undue on radial dimension of housing to increase thick and reduce operability. Further, in the present embodiment, osmosis filtration district 300 surrounds respectively along the axially extending of housing 100 and by prefilter district 200 and rearmounted filtering area 400, therefore the thick degree of increasing of housing 100 axial length in osmosis filtration district 300 can be effectively increased, thus can also be reduced further.

In the present embodiment, when axially disposed preposition and rearmounted filtering area, in order to ensure the maintenance of the filtration members in housing 100, housing 100 has the link 110 close to prefilter district 200 and the operating side 120 close to rearmounted filtering area 400 vertically, link 110 has end wall, this end wall is provided with the external connection mouth of a river in prefilter district 200, rearmounted filtering area 400 and osmosis filtration district 300, i.e. first water inlet the 210, first outlet the 220, second water inlet 310 in above-mentioned the present embodiment, dense water out 330 and pure water outlet 420. Thus each external connection mouth of a river is arranged on side and can conveniently be attached with each upstream and downstream water route. Wherein, operating side 120 is removably provided with filter element lid 500, such as filter element lid 500 is threaded on the lateral wall of operating side 120, therefore only need to this 500 pulls down the maintenance that can be completed each filtering area in housing 100 by this operating side 120 by this filter element when maintenance. Wherein filter element lid 500 can be provided with spanner structure, thus facilitating related personnel to screw.

Under this topology layout, sent the pure water of final filtration by linkage section 110 in order to complete rearmounted filtering area 400, the axially extended DI 600 along housing 100 it is provided with in housing 100, this DI 600 one end connects with the water outlet side of rearmounted filtering area 400, the other end exports 420 with the pure water on the end wall being arranged on link 110 and connects, namely this DI 600 can pass prefilter district 200 and osmosis filtration district 300, is sent outside housing 100 by link by the water that rearmounted filtering area 400 is filtered.

In order to realize the division of each filtering area 400 in housing 100 better, as shown in Figure 1, axially disposed in housing have separator 700, this separator 700 has axially disposed first paragraph 710 and second segment 720, first paragraph 710 is formed as holding the groove structure of rearmounted filtering area 400, the sidewall of this groove structure is fitted for the sidewall with housing 100, one end of second segment 720 is connected on the diapire of groove structure the other end and is sealingly mounted on the end wall of link 110 and is formed as tubular structure, wherein it is used for holding prefilter district 200 between outer wall and the inwall of housing 100 of this tubular structure, namely between sidewall and the inwall of housing 100 of tubular structure, annulus one is used for holding prefilter part 230, without fitting on housing 100 as first paragraph 710 groove structure.So, it is also possible to by holding osmosis filtration district 300 between the inwall of tubular structure. Additionally, above-mentioned DI 600 can also be extended on the end wall of linkage section 110 by the inner space of this tubular structure.

Therefore, by the separation in each district in housing 100 can be realized by this separator 700, and when safeguarding, it is possible to be operated by end 120 and individual separator 700 is taken out in housing 100, thus each filtering area is safeguarded.

On the said structure basis of the present embodiment, in order to realize entrance and the water outlet of rearmounted filtering area 400, alternatively, the outer compartment of terrain of DI 600 is arranged with sleeve pipe 690, the pure water side that inwall side is osmosis filtration district 300 of this sleeve pipe 690, DI 600 and sleeve pipe 690 pass from the diapire of groove structure respectively, the tube wall of its middle sleeve 690 is formed by reverse osmosis membrane materials, so that the pure water of the generation in osmosis filtration district 300 is entered by tube wall in pipe under pressure, so, connected by the influent side of sleeve pipe 690 with rearmounted filtering area 400, and realize the pure water of the generation in osmosis filtration district 300 is supplied to rearmounted filtering area 400, the water that water outlet side additionally by DI 600 with rearmounted filtering area 400 connects and realizes filtering rearmounted filtering area 400 is discharged outside housing 100.

For further lift-off seal, the outer wall of first paragraph 710 is formed as having the ledge structure of inner segment, step transition section and outer section, wherein inner segment, step transition section and the outer section of inward-outward direction along housing are sequentially arranged, wherein, fit in the medial wall of the inner segment of this ledge structure and operating side 120, the end face of described step transition section and described operating side 120 is fitted, and fits with the inwall of filter element lid 500 for outer section. So realize the sealing between separator and housing 100 by multiple inflection structure, it is to avoid water is by the joint face leakage between filter element lid 500 and first paragraph 710.

It addition, in the present embodiment, as depicted in figs. 1 and 2, the opening of first paragraph 710 is sealedly connected with dismountable bulkhead cover 510, for instance, bulkhead cover 510 can be threadeded with the inwall of first paragraph 710, and can and this inwall between be provided with the first sealing member 810, for instance sealing ring. And the roof of this bulkhead cover 510 and filter element lid 500 is oppositely arranged. So that the better tightness of rearmounted filtering area 400, it is prevented that the water of rearmounted filtering area 400 leaks outside.

In order to realize the filtration in rearmounted filtering area 400, namely influent side and water outlet side are marked off, in the present embodiment, as shown in Figure 2, being covered with rearmounted separator 420 on the diapire of groove structure, this rearmounted separator 420 is formed as lid-like, and the sidewall edge of this lid-like has been outwardly formed flange 421, being sealed and installed with the axially extended rearmounted filtration members 410 along housing 100 between bulkhead cover 510 and flange 421, this rearmounted filtration members 410 is formed about the circulus of rearmounted separator 420. For influent side, inner side is then water outlet side in the outside of the rearmounted filtration members 420 of such ring-type, wherein in this fashion, space outside the roof of rearmounted filtration members 410 lid-like and between bulkhead cover 510 is water outlet side space, and the inner side of lid-like is then influent side space. In order to realize water inlet and the water outlet of rearmounted filtration members, connect with osmosis filtration district 300, DI 600 is connected with the water outlet side of rearmounted filtration members 410 by the roof of lid-like, and it is formed with the gap connected with sleeve pipe 690 between lid-like and the diapire of groove, and this gap connects with the influent side of rearmounted filtration members 410.

So, not only rearmounted filtration members 410 can be installed hermetically but also influent side and water outlet side can be marked off dexterously by this rearmounted separator 420, it is achieved the water inlet of rearmounted filtering area 400 and water outlet. It should be noted that this structure can also independently form as a kind of filtering area except the rearmounted filtering area for multiple filtering areas of the disclosure. Namely, a kind of include the first paragraph 710 of above-mentioned groove structure, aforementioned barriers lid 510, rearmounted separator 420, rearmounted filtration members 410, outlet pipe 600 and to be set in outlet pipe 600 outer to form the filtering area of the oral siphon of sleeve structure, the sleeve pipe 690 in oral siphon therein and the present embodiment.

Return in the present embodiment, in order to realize the connection of DI 600 and water outlet side, the end of this DI 600 is provided with the upper tube cap 610 connected with this DI 600, the roof of rearmounted separator 420 lid-like is formed with the installation sleeve 422 with centre bore, upper tube cap 610 inserts in the centre bore of this installation sleeve 422 to connect DI 600 and the water outlet side of rearmounted filtration members 410, namely connects the outer space of roof. In other embodiments, it is also possible to be not provided with upper tube cap 610, but directly make DI 600 be inserted in the roof of rearmounted separator 420 and connect with the water outlet side of rearmounted filtration members 410.

Install in order to convenient, alternatively, in the present embodiment, as shown in Figure 2, DI 600 inserts in upper tube cap 610, and upper tube cap 610 has compartment of terrain simultaneously and is inserted into the spacer portion between sleeve pipe 690 and DI 600, and so this upper tube cap can also have wharf explosion DI 60 and the effect at the direct interval of sleeve pipe 690, wherein owing to spacer portion and sleeve pipe 690 and DI 600 directly have gap, thus the passing through of the pure water produced without influence on osmosis filtration district 300. Additionally in other embodiments, spacer portion itself is also provided with the structure of intercommunicating pore such that it is able to closely coordinate with two pipes.

Additionally, interval in order to ensure sleeve pipe 690 and DI 600 is stable, in the present embodiment, it is provided with lower tube cap 680 between end and the end wall of link of sleeve pipe 690 and DI 600, this lower tube cap 680 has centre bore to connect DI 600 and the pure water outlet 420 being arranged on this end wall, thus discharging the drainage of crossing in osmosis filtration district 400 smoothly, and lower tube cap 680 has sealings is inserted between sleeve pipe 690 and DI 600 simultaneously spacer portion so that between two pipes interval is stably.

In order to realize the position stability of rearmounted separator 420, alternatively, the roof of bulkhead cover 510 is provided with for supporting the ring seat 511 installing sleeve 422, and in order to avoid affecting current, circumferentially spaced on the sidewall of this ring seat 511 it is provided with multiple breach, so that the centre bore installing sleeve 422 connects with the water outlet side of rearmounted filtration members 410. Breach wherein described herein can be the breach of the unlimited profile of the end opens from ring-type 511 can also be the closed outline breach formed ring seat sidewall. In addition to make the installation of rearmounted filtration members 410 stable, in the present embodiment, flange 421 is formed as annular recess to hold the end of rearmounted filtration members 410, and namely this flange 421 has two sidewalls and causes seal failure to avoid rearmounted filtration members 410 to move.

Wherein, in order to ensure sealing, between outer tube wall and the diapire of first paragraph 710 groove structure of sleeve pipe 690, it is provided with the second sealing member 820, is provided with the 3rd sealing member 830 it addition, install between sleeve 422 and upper tube cap 610.Wherein involved herein sealing member can be the various sealing members well known in the art such as sealing ring, sealing strip.

Above describe structure and the principle of rearmounted filtering area 400, structure and the work principle of filter in prefilter district 200 are described below. Wherein, as shown in Figure 1, the preposition upper end cover 240 and preposition bottom end cover 250 that are respectively formed as circulus it is provided with in prefilter district 200, and it being arranged on the prefilter part 230 between preposition upper end cover 240 and preposition bottom end cover 250, this prefilter part 230 is formed about the circulus of second segment 720. So, the outside of this prefilter part 230 is influent side, and inner side is then water outlet side. Prefilter district 200 includes the first water inlet 210 and the first outlet 220 being arranged on the end wall of link 110, and namely this first water inlet 210 connects with the outside of prefilter part 230, and the first outlet 220 connects with the inner side of prefilter part 230.

Wherein, so that be easy to the first outlet 220 guided by the current of water outlet side, preposition upper end cover 240 and preposition bottom end cover 250 are also equipped with the preposition conducting element 260 arranged around second segment 720, this preposition conducting element 260 has gap with prefilter part 230 and second segment 720 respectively, wherein the water outlet side of prefilter part 230 and first this gap of outlet 220 and this preposition conducting element 260 connect away from the end of link 110, namely, thus the current that prefilter part 230 produces can towards the conducting element 260 endwall flow away from link 110 under the effect of preposition conducting element 260, then turn back again and flow towards the first outlet 220. this is because generally filter element is vertically place, so so that the gas filtered in water is discharged and accumulates potential energy and can obtain bigger acceleration after walking around preposition conducting element 230 and increase the speed that current flow out from the first outlet 220 simultaneously, filter efficiency can be promoted. additionally, the filtered water stream moved upward fully can contact with prefilter part 230 and increase filter effect, in addition the impurity that can settle water quality before drainage walks around preposition conducting element 260 in the process flowed up further is crossed, thus increasing the filter effect of water further.

In the present embodiment, preposition conducting element 260 is arranged on preposition upper end cover 240 away from the end of link 110 by connecting seat 241, connection seat 241 herein is by forming the connectivity structures such as porose, groove to allow the structure of water stream channel, can so that fixing of preposition conducting element 260 is more stable by being located at this connection seat 241. In other embodiments, this end of preposition conducting element 260 can not also and upper end cover 240 be connected and keep with it interval, pass through for current.

In order to ensure the sealing in prefilter district 200, as shown in Figure 3, preposition upper end cover 230 is resisted against between first paragraph 710 and second segment 720, and and be provided with the 4th sealing member 840 between second segment 720, preposition bottom end cover be resisted against on the end wall of link 110 and and this end wall between be provided with the 5th sealing member 850. Thus avoiding leaking in parts joint portion.

The operation principle in osmosis filtration district 400 is described below, wherein, as shown in Figure 1, osmosis filtration district 300 is provided with the reverse osmosis membrane 320 axially extended around sleeve pipe 690, the influent side of this reverse osmosis membrane 320 connects with the second water inlet 310 on the end wall being arranged on link 110, to receive the entrance with pressure, dense water side connects with the dense water out 330 on the end wall being arranged on link 110, to discharge dense water.Pure water side is then fitted on the outer wall of sleeve pipe 690, thinks to supply water in rearmounted filtering area 400, thus realizing the process of osmosis filtration.

As shown in Figure 3, ring-type end cap 350 it is provided with between the end wall of reverse osmosis membrane 320 and link 110, this ring-type end cap 350 support is between the end wall and sidewall of reverse osmosis membrane 320, namely be formed as L-type cross section with while the end wall of support reverse osmosis membrane 320 and sidewall, reverse osmosis membrane 320 is installed stably will not shift, and be provided with the 6th sealing member 860 between the end wall of ring-type end cap 350 and link 110 in case leak-stopping water.

To sum up, the filter element that the present embodiment provides is integrated with preposition, reverse osmosis and rearmounted three big filtering areas by a housing 100, so, current can be realized and complete efficient Water treatment by this filter element, and after making water purifier space utilization, being conducive to miniaturization, the kitchen being adapted to more specification uses.

Those skilled in the art, after considering description and putting into practice the disclosure, will readily occur to other embodiment of the disclosure. The application is intended to any modification of the disclosure, purposes or adaptations, and these modification, purposes or adaptations are followed the general principle of the disclosure and include the undocumented known general knowledge in the art of the disclosure or conventional techniques means. Description and embodiments is considered only as exemplary, and the true scope of the disclosure and spirit are pointed out by claim below.

It should be appreciated that the disclosure is not limited to precision architecture described above and illustrated in the accompanying drawings, and various amendment and change can carried out without departing from the scope. The scope of the present disclosure is only limited by appended claim.

Claims (28)

1. a filter element, including housing (100), it is characterized in that, prefilter district (200), osmosis filtration district (300) and rearmounted filtering area (400) it are formed with in described housing (100), the current filtered by described prefilter district (200) enter described osmosis filtration district (300), and the concentrated water drainage that described osmosis filtration district (300) produces goes out described housing (100), pure water enters after filtering in described rearmounted filtering area (400) and is then exhausted from described housing (100).

2. filter element according to claim 1, it is characterized in that, described prefilter district (200) has the first water inlet (210), the first outlet (220) and is positioned at the prefilter part (230) between this first water inlet (210) and first outlet (220), and described osmosis filtration district (300) includes for passing through to be placed in the second water inlet (310) that the outside pressue device of described housing (100) is connected with described first outlet (220).

3. filter element according to claim 2, it is characterized in that, described prefilter part (230) includes PP cotton layer (231) or PP cotton layer (231) being sequentially overlapped along water (flow) direction and the first activated carbon layer (232).

4. filter element according to claim 1, it is characterized in that, described osmosis filtration district (300) has reverse osmosis membrane (320) and the dense water out (330) connected with the dense water side of this reverse osmosis membrane (320), and the pure water side of described reverse osmosis membrane (320) connects with described rearmounted filtering area (400) in described housing (100) inside.

5. filter element according to claim 1, it is characterized in that, described rearmounted filtering area (400) has rearmounted filtration members (410), the influent side of this rearmounted filtration members (410) connects in described housing (100) inside with the pure water side of described osmosis filtration district (300), and water outlet side pure water outlet (420) that arrange upper with described housing (100) connects.

6. filter element according to claim 5, it is characterised in that described rearmounted filtration members (410) includes the second active carbon layer (411).

7. filter element according to claim 1, it is characterised in that axial arranged along described housing (100) of described prefilter district (200) and described rearmounted filtering area (400).

8. filter element according to claim 7, it is characterized in that, described osmosis filtration district (300) surrounds respectively along the axially extending of described housing (100) and by described prefilter district (200) and described rearmounted filtering area (400).

9. the filter element according to claim 7 or 8, it is characterized in that, described housing (100) has the link (110) close to described prefilter district (200) and the operating side (120) close to described rearmounted filtering area (400) vertically, described link has end wall on (110), this end wall is provided with described prefilter district (200), the external connection mouth of a river in described rearmounted filtering area (400) and described osmosis filtration district (300), described operating side (120) is removably provided with filter element lid (500), and it is provided with the axially extended DI (600) along described housing (100) in described housing (100), this DI (600) one end connects with the water outlet side of described rearmounted filtering area (400), the other end exports (420) with the pure water on the described end wall being arranged on described link (110) and connects.

10. filter element according to claim 9, it is characterized in that, axially disposed in described housing have separator (700), this separator (700) has axially disposed first paragraph (710) and second segment (720), described first paragraph (710) is formed as holding the groove structure of described rearmounted filtering area (400), the sidewall of this groove structure is fitted for the sidewall with described housing (100), one end of described second segment (720) is connected on the diapire of described groove structure the other end and is sealingly mounted on the end wall of described link (110) and is formed as tubular structure, wherein it is used for holding described prefilter district (200) between outer wall and the inwall of described housing (100) of this tubular structure, it is used between the inwall of described tubular structure holding described osmosis filtration district (300).

11. filter element according to claim 10, it is characterized in that, described DI (600) outer compartment of terrain is arranged with sleeve pipe (690), the sidewall of this sleeve pipe (690) is formed through water hole, and the pure water side that outer wall side is described osmosis filtration district (300), described DI (600) and described sleeve pipe (690) pass from the diapire of described groove structure respectively, described sleeve pipe (690) connects with the influent side of described rearmounted filtering area (400), described DI (600) connects with the water outlet side of described rearmounted filtering area (400).

12. filter element according to claim 10, it is characterized in that, described filter element lid (500) is detachably connected on the lateral wall of described operating side (120), the outer wall of described first paragraph (710) is formed as having the ledge structure of inner segment, step transition section and outer section, fit in the medial wall of the described inner segment of this ledge structure and described operating side (120), the end face of described step transition section and described operating side (120) is fitted, and fits with the inwall of described filter element lid (500) for described outer section.

13. filter element according to claim 10, it is characterized in that, the roof being sealedly connected with dismountable bulkhead cover (510), this bulkhead cover (510) and described filter element lid (500) on the opening of described first paragraph (710) is oppositely arranged.

14. filter element according to claim 13, it is characterised in that described bulkhead cover (510) is connected with the inner thread of described first paragraph (710), and and between this inwall, it is provided with the first sealing member (810).

15. filter element according to claim 11, it is characterized in that, the opening of described first paragraph (710) is sealedly connected with dismountable bulkhead cover (510), the roof of this bulkhead cover (510) and described filter element lid (500) is oppositely arranged, the diapire of described groove structure is covered with rearmounted separator (420), this rearmounted separator (420) is formed as lid-like, the sidewall edge of this lid-like has been outwardly formed flange (421), the axially extended rearmounted filtration members (410) along described housing (100) it is sealed and installed with between described bulkhead cover (510) and described flange (421), this rearmounted filtration members (410) is formed about the circulus of described rearmounted separator (420),

Described DI (600) is connected by the water outlet side of the roof of described lid-like with described rearmounted filtration members (410), it is formed with the gap connected with described sleeve pipe (690) between described lid-like with the diapire of described groove, and this gap connects with the influent side of described rearmounted filtration members (410).

16. filter element according to claim 15, it is characterized in that, the end of described DI (600) is provided with the upper tube cap (610) connected with this DI (600), being formed with the installation sleeve (422) with centre bore on the roof of described lid-like, described upper tube cap (610) inserts in the centre bore of this installation sleeve (422) to connect described DI (600) and the water outlet side of described rearmounted filtration members (410).

17. filter element according to claim 16, it is characterized in that, described DI (600) inserts in described upper tube cap (610), and described upper tube cap (610) has compartment of terrain simultaneously and is inserted into the spacer portion between described sleeve pipe (690) and described DI (600).

18. filter element according to claim 16, it is characterized in that, the roof of described bulkhead cover (510) is provided with the ring seat (511) for supporting described installation sleeve (422), circumferentially spaced on the sidewall of this ring seat (511) is provided with breach so that the centre bore of described installation sleeve (422) connects with the water outlet side of described rearmounted filtration members (410).

19. filter element according to claim 15, it is characterised in that described flange (421) is formed as annular recess to hold the end of described rearmounted filtration members (410).

20. filter element according to claim 16, it is characterized in that, it is provided with the second sealing member (820) between outer tube wall and the diapire of described groove structure of described sleeve pipe (690), between described installation sleeve (422) and described upper tube cap (610), is provided with the 3rd sealing member (830).

21. filter element according to claim 10, it is characterized in that, the preposition upper end cover (240) being respectively formed as circulus and preposition bottom end cover (250) it is provided with in described prefilter district (200), and it being arranged on the prefilter part (230) between described preposition upper end cover (240) and preposition bottom end cover (250), this prefilter part (230) is formed about the circulus of described second segment (720).

22. filter element according to claim 21, it is characterized in that, described prefilter district (200) includes the first water inlet (210) and the first outlet (220) that are arranged on the end wall of described link (110), described preposition upper end cover (240) and preposition bottom end cover (250) are also equipped with the preposition conducting element (260) arranged around described second segment (720), this preposition conducting element (260) has gap with described prefilter part (230) and described second segment (720) respectively, the water outlet side of wherein said prefilter part (230) and described this gap of first outlet (220) and this preposition conducting element (260) connect away from the end of described link (110).

23. filter element according to claim 22, it is characterized in that, described preposition conducting element (260) is arranged on described preposition upper end cover (240) by connecting seat (241) away from the end of described link (110).

24. filter element according to claim 21, it is characterized in that, described preposition upper end cover (230) is resisted against between described first paragraph (710) and described second segment (720), and and be provided with the 4th sealing member (840) between described second segment (720), described preposition bottom end cover be resisted against on the end wall of described link (110) and and this end wall between be provided with the 5th sealing member (850).

25. filter element according to claim 11, it is characterized in that, described osmosis filtration district (300) is provided with the reverse osmosis membrane (320) axially extended around described sleeve pipe (690), the influent side of this reverse osmosis membrane (320) connects with the second water inlet (310) on the end wall being arranged on described link (110), dense water side connects with the dense water out (330) on the end wall being arranged on described link (110), and pure water side is fitted on the outer wall of described sleeve pipe (690).

26. filter element according to claim 25, it is characterized in that, ring-type end cap (350) it is provided with between the end wall of described reverse osmosis membrane (320) and described link (110), this ring-type end cap (350) and described support are between end wall and the sidewall of described reverse osmosis membrane (320), and and are provided with the 6th sealing member (860) between the end wall of described link (110).

27. filter element according to claim 25, it is characterized in that, it is provided with lower tube cap (680) between end and the end wall of described link of described sleeve pipe (690) and described DI (600), this lower tube cap (680) has centre bore to connect described DI (600) and pure water outlet (420) being arranged on this end wall, and described lower tube cap (680) has the spacer portion that sealing is inserted between described sleeve pipe (690) and described DI (600) simultaneously.

28. a water purifier, it is characterised in that be provided with the filter element according to any one in claim 1-27 in described water purifier.