CN105617868A

CN105617868A - Filter element, water purifying device and filter element manufacturing method

Info

Publication number: CN105617868A
Application number: CN201510837880.2A
Authority: CN
Inventors: 张军; 王洪涛; 孙文龙; 王彬
Original assignee: Honeywell Environmental and Combustion Controls Tianjin Co Ltd
Current assignee: Honeywell Environmental and Combustion Controls Tianjin Co Ltd
Priority date: 2015-11-26
Filing date: 2015-11-26
Publication date: 2016-06-01
Anticipated expiration: 2035-11-26
Also published as: CN105617868B

Abstract

The invention discloses a filter element, water purifying equipment employing the filter element and a manufacturing method thereof. The filter element comprises at least two single blade units; each single blade unit comprises a core tube and a multilayer structure for enwrapping the core tube, the core tubes of all the single blade units are arranged close to the ground; and the multilayer structures of all the single blade units enwrap the core tubes arranged close to the ground in a staggered way. The filter element disclosed by the invention is larger in purified water flow rate and longer in life.

Description

Filter element, purifier and filter element manufacture method

Technical field

The present invention relates to purifier, specifically, the invention provides a kind of multiple-blade filter element, its manufacture method and there is its defecator.

Background technology

With social development, purifier enters into huge numbers of families gradually. Based in the purifier of reverse osmosis technology, reverse osmosis membrane filter element plays vital effect. Different production firms adopt different reverse osmosis membrane filter element technology, and produce the reverse osmosis membrane filter element that structure is different, for instance single blade filter element, special single blade filter element, multiple-blade filter element, bi-core pipe filter element etc., it each has the advantage that also have weak point.

Summary of the invention

It is an object of the invention at least one shortcoming overcoming various filter elements in prior art to have. More particularly it is an object to provide one has bigger net water flux, more long-life filter element.

For realizing object above, according to an aspect of the present invention, provide a kind of filter element for purifier, described filter element includes at least two list blade unit, each described single blade unit all includes core pipe, and for wrapping up the multiple structure of described core pipe, the core pipe of each described single blade unit is closely arranged, and the multiple structure of each described single blade unit holds the multiple core pipes closely arranged alternately.

Alternatively, in above-mentioned filter element, described multiple structure includes the filter membrane walking around described core pipe, the interior water guide layer being sandwiched between described filter membrane to connect with described core pipe and the outer water guide layer investing on outside described filter membrane.

Alternatively, in above-mentioned filter element, described filter membrane includes supporting layer and invests the reverse osmosis membrane on described supporting layer.

Alternatively, in above-mentioned filter element, described filter element includes three to ten single blade units.

Alternatively, in above-mentioned filter element, the outer ring at the two ends of described filter element seals.

Alternatively, in above-mentioned filter element, the two ends of described filter element have center channel near core pipe place.

Alternatively, in above-mentioned filter element, the part that cross sectional shape is annular of the plurality of core pipe.

According on the other hand, it is provided that a kind of purifier, this purifier includes any of the above-described kind of filter element.

According on the other hand, it is provided that the manufacture method of a kind of filter element, described manufacture method includes manufacturing at least two list blade unit, and each described single blade unit all includes core pipe and for wrapping up the multiple structure of described core pipe; And

The core pipe of each single blade unit is gathered layout, and the multiple structure of each single blade unit is wound around multiple core pipes alternately, to form filter element.

Alternatively, in the manufacture method of above-mentioned filter element, described multiple structure includes the filter membrane walking around described core pipe, the interior water guide layer being sandwiched between described filter membrane to connect with described core pipe and the outer water guide layer investing on outside described filter membrane.

Alternatively, in the manufacture method of above-mentioned filter element, described filter membrane includes supporting layer and invests the reverse osmosis membrane on described supporting layer.

Alternatively, in the manufacture method of above-mentioned filter element, described filter element includes three to ten single blade units.

Alternatively, in the manufacture method of above-mentioned filter element, the cross sectional shape of the core pipe of each described single blade unit manufactures a part for annular.

Alternatively, in the manufacture method of above-mentioned filter element, described manufacture method also includes the step sealed the outer ring at filter element two ends.

The filter element of the present invention and purifier have bigger net water flux, longer life-span.

The filter element manufacture method of the present invention is easy to operate, improves filter element life under the precursor substantially not improving cost.

Accompanying drawing explanation

With reference to accompanying drawing, the present invention above-mentioned and other feature will become clear from, wherein:

Fig. 1 illustrates the schematic diagram of single blade filter element;

Fig. 2 and Fig. 3 respectively illustrates side view and the profile of core pipe;

Fig. 4 illustrates that single blade filter element launches view;

Fig. 5 illustrates the zoomed-in view under single blade filter element deployed condition;

Fig. 6 illustrates each Rotating fields view under single blade filter element deployed condition;

Fig. 7 illustrates that of purifier has the filtration grade of single blade filter element;

Fig. 8 illustrates the schematic diagram in the manufacture process of special single blade filter element;

Fig. 9 illustrates the schematic diagram in the manufacture process of special single blade filter element, wherein adds end cap;

Figure 10 illustrates that of purifier has the filtration grade of special single blade filter element;

Figure 11 illustrates that the fluid that special single blade filter element launches flows to schematic diagram;

Figure 12 illustrates the structure diagram of the deployed condition of bi-core pipe filter element;

Figure 13 illustrates the structural representation of multiple-blade filter element;

Figure 14 illustrates the schematic diagram of the multiple-blade filter element according to the present invention;

Figure 15 illustrates the zoomed-in view of the multiple-blade filter element according to the present invention;

Figure 16 illustrate purifier a filtration grade according to the multiple-blade filter element of the present invention and

Figure 17 illustrates the alternative of core pipe.

Detailed description of the invention:

Easy to understand, according to technical scheme, under not changing true spirit, one of ordinary skill in the art can propose various structures mode and the implementation that can mutually replace. Therefore, detailed description below and accompanying drawing are only the exemplary illustrations to technical scheme, and are not to be construed as the whole of the present invention or are considered as defining or limiting technical solution of the present invention.

The orientation terms such as the up, down, left, right, before and after mentioned in this manual or be likely to mention, front, the back side, top, bottom are to be defined relative to the structure shown in each accompanying drawing, they are relative concepts, it is therefore possible to can residing for it diverse location, different use state and correspondingly change. So, also these or other orientation term should be construed to restricted term.

Single blade filter element and manufacture method thereof:

With reference first to Fig. 1, that schematically shows the single blade filter element 10 for purifier, for instance, specifically reverse osmosis membrane filter element, also referred to as RO (reverseosmosis) membrane cartridge, it includes core pipe 12 and the multiple structure 11 being wrapped on core pipe 12. The structure of core pipe 12 can in figs. 2 and 3 it is clear that wherein figure 2 show the side view of core pipe 12 and Fig. 3 illustrates the profile of core pipe 12. Substantially in a tubular form, the core pipe of other shapes is also feasible to core pipe 12 entirety certainly. It is (such as cylindrical that core pipe 12 includes limiting cylindricality profile, elliptical cylinder-shape, square column type or cross section be the opposite sex cylindricality etc.) shell 121 and on shell 121 distribution multiple apertures 122, aperture 122 allows in the internal flow channel that the housing 121 that current pass through to enter core pipe 12 limits, and flows out from pipe port 123. As it is shown on figure 3, core pipe 12 can be provided with barrier 125 at its adjacent one end, the distance of its distance core tube end is according to actual design adjustable, or core pipe also can not have barrier 125.

With reference to Fig. 4 to 6, wherein show in detail structure and the manufacture process of single blade filter element. as it is shown in figure 5, walk around core pipe 12 first by filter membrane 117. at this place, so-called " walking around " can by following understanding: the substantially planar shape of filter membrane 117, such as strip, although Fig. 5 and 6 illustrate only a part for filter membrane 117, but in fact, it generally has the rectangle of the length much larger than its width, specifically can refer to Fig. 4, and make filter membrane 117 walk around core pipe 12 and such as can pass through to be placed in core pipe 12 the central symmetry axes place in the width direction of filter membrane 117, then by filter membrane along the position doubling of core pipe 12 so that core pipe 12 is placed between two-layer filter membrane 117, or in other words, it is placed between upper page and the nextpage of filter membrane 117, namely the state shown in Fig. 5 is formed, certainly, will be understood that also can first by filter membrane 117 axis of symmetry doubling in the width direction, core pipe 12 is inserted the position near the axis of symmetry between two-layer filter membrane 117 again. it should be understood that use filter membrane 117 is walked around core pipe 12 and any mode can be taked to wrap up the state of core pipe 12 with the filter membrane 117 realizing describing in Fig. 5 or 6.

In one embodiment, with reference to Fig. 6, filter membrane 117 includes supporting layer 112,114 and the reverse osmosis membrane 111,115 played a role in filtering investing on supporting layer 112,114. As known in the art, osmosis filtration technology utilizes the water under high pressure will from high concentration to low concentration flow principles, adopt the RO film (being such as only 5/1000000ths of hair) that aperture is minimum, to remove inorganic salt in water, heavy metal ion, Organic substance, colloid, antibacterial etc. Supporting layer 112 primarily serves structure supporting role, and it can carry certain water, and the specific embodiment of supporting layer can be nonwoven layer. Using filter membrane 117 to walk around core pipe 12, accompany interior water guide layer 113 between upper page and the nextpage of filter membrane, interior water guide layer 113 is such as layer of cloth, and it can carry and guide current, and interior water guide layer is such as connected with the inside of core pipe 12 by the aperture 122 on core pipe 12.

As shown in Figure 4, it is core pipe 12 and the filter membrane 117 (namely comprising page and nextpage and interior water guide layer 113) accompanying water guide layer 113 opened that tiles. Accompany the filter membrane 117 of water guide layer 113 at its three edges, namely top edge 141 lower limb 143 and tip edge 142 place adopt seal (such as two liquid mixed hardening glue (AB glue) etc.) to seal so that current are only capable of entering interior water guide layer 113 by filter membrane 117.

Subsequently, outer water guide layer 116 is invested on the side of filter membrane. Although Fig. 5 and 6 China and foreign countries water guide layer 116 is depicted as the downside being in filter membrane 117, it is true that outer water guide layer 116 may be provided on the either side outside filter membrane. One embodiment of outer water guide layer 116 is screen cloth, and it can have stronger carrying and guide the ability of water. Water guide layer 116 invests the outer rear flank of filter membrane and namely forms the multiple structure for wrapping up core pipe 12 outside, it filter membrane 117 including walking around core pipe 12, is sandwiched in the interior water guide layer 113 connected between filter membrane 117 and the outer water guide layer 116 investing on outside filter membrane 117 with core pipe 12.

As it is shown in figure 5, after above operation completes, namely multiple structure is rolled along the direction shown in arrow R or rightabout, to form filter element 10 as shown in Figure 1. Although not shown, but at the section of filter element 10 it is seen that each layer of staggered screw type, including RO rete 111,115, supporting layer 112,114, interior water guide layer 113, outer water guide layer 116, they are screw type in cross section. Its China and foreign countries' water guide layer 116 and interior water guide layer 113 limit the water stream channel of two screw types respectively.

The operation principle of single blade filter element 10 is explained presently in connection with Fig. 7. Fig. 7 illustrates a filtration grade in purifier, and this filtration grade may be provided in the force (forcing) pump downstream in purifier so that the glassware for drinking water of arrival has certain pressure, and the downstream of this filtration grade can be provided with more filtration grade or connect with water tank etc. This filtration grade has the housing 25 limiting container shapes, is provided with filter element 10 in housing. Housing 25 is further defined by upstream to the entrance 21 of water and discharge outlet 22. Housing 25 is separated by sealing member 23 also referred to as brine seal part 23 so that current can only pass through from filter element 10. Current such as enter filter element 10 with current I from the outer water guide layer (owing to interior water guide layer is sealed in edge) of one end 133 of the filter element corresponding to the lower limb 143 Fig. 4, and flow (the A direction corresponding in Fig. 4) along the length direction of filter element 10, non-permeation parts in current I flows out from the outer water guide layer of the other end 131 of the filter element corresponding to the top edge 141 Fig. 4 with current F, and is discharged by discharge outlet 22. With reference to Fig. 5 and Fig. 7, a part of current I is when by filter element 10, can pass through filter membrane 117 at any point and enter interior water guide layer 113 (principle of reverse osmosis based on mentioned above), this part current T then passes through the spiral path limited by interior water guide layer 113 and enters core pipe 12 (such as due to pressure reduction), and discharges along pure water inlet 24. As known, the glassware for drinking water filtered through filter membrane 117 has less impurity concentration or is pure water. These current T part can be used for after continuing purification via downstream directly drinking or other purposes. As shown in Figure 4, in this list blade filter element, current are generally along A direction through filtration core, and its stroke is shorter, and flow rate of water flow is slower.

Special single blade filter element and manufacture method thereof:

Figure 8 illustrates special single blade filter element, glue 13 is adopted to be sealed the outer ring at the two ends (although only illustrating one end in figure) of filter element 10 after filter element 10 as shown in Figure 1 is rolled into, make current can only enter filter element from the outer water guide layer of the unencapsulated inner ring at two ends, again as illustrated in fig. 9, further sealing is sentenced at the two ends that end cap 14 is mounted to filter element 10, and end cap has the slotted flange 15 of band and is connected for use in exterior line.

With reference to Figure 10, it illustrates this special single blade filter element 10 application in filtration grade. Filtration grade includes housing 33, and housing 33 limits flow inlet 31, outlet 35. For clarity sake, locating on the right side of Fig. 9, the dividing plate 34 limiting flow inlet 31 is illustrated as there is certain distance with core pipe, it is true that dividing plate 34 is in close proximity to core pipe. The outer water guide layer of the unencapsulated inner ring of the current I the being from upstream to flow inlet 31 from filter element two ends the end face along filter element 10 enters filter element, and the spiral-shaped path limited along outer water guide layer is outwardly, wherein the part in current directly flows out filter element along the path that outer water guide layer limits, and discharges from outlet 35 as current F. And the water through filter membrane enters central canal due to pressure reduction, and flowed out as stream of pure water T by pure water inlet 32.

As shown in figure 11, being spread out by this special single blade filter element, it has core pipe 12 and edge 151,152,153. In figure, dotted line S the section 154,155 defined represents the unsealing inner ring (after rolling) of end, filter element two ends, and current can enter filter element from this region approximately along arrow P, and along the direction flowing substantially marked by arrow B, goes out along outer water guide laminar flow. In this special single blade filter element, flow path is narrower longer, and current higher speed can wash away the surface of each layer filter membrane, and the filter membrane caused in filter membrane surface to prevent impurity to be collected in lost efficacy. But this special single blade filter element has the region D of less current process, it is possible to be called " dead angle ", the current that will not wash away at a high speed in this region, thus will cause that impurity is collected in this. With gathering of more impurity, region D will constantly expand, thus causing that filter element lost efficacy.

Bi-core pipe filter element and manufacture method thereof:

With reference to Figure 12, it illustrates the filter element of a kind of bi-core pipe. It is distinctive in that with the embodiment shown in Fig. 5, by another core pipe 15 and core pipe 12 juxtaposition before rolling, subsequently multiple structure is rolled, and filter element two ends are sealed (including outer ring and inner ring), this another core pipe 15 is connected so that the current F not passed through of outer water guide layer discharges from another core pipe 15 with outer water guide layer 116.

The bi-core pipe filter element of Figure 12 is identical with special single blade filter element has longer narrower fluid passage, therefore wherein current can keep it clean by fast flush filter membrane. Simultaneously because the design of bi-core pipe, the problem that its low discharge dead angle no longer with special single blade filter element is associated. But, it being confined to bi-core pipe design, its flow is limited to.

Multiple-blade filter element and manufacture method thereof:

Refer to Figure 13, it illustrates a kind of multiple-blade filter element, multiple-blade filter element includes single core pipe 65, and this core pipe 65 is identical or essentially identical with the core pipe shown in Fig. 2 and Fig. 3. Subsequently single filter membrane being attached to core pipe 65, this single filter membrane includes three sections, respectively section 611,612,613, i.e. in fact section 611,612,613 is monolithic filter membrane, and it includes supporting layer and the reverse osmosis membrane investing on supporting layer as already mentioned above. Monolithic filter membrane is attached to core pipe 65 by section 612, for instance be bonded to core pipe 65. Similarly, on adjacent position, there is section 641,642, the monolithic filter membrane of 643 is attached to core pipe 65, and interior water guide layer 62 is clipped between adjacent filter membrane 613 and 641, by rim seal after interior water guide layer applies, and outer water guide layer 63 is invested between the section 641 and 643 of monolithic filter membrane and between 611 and 613 (although not shown). Although it is not shown, other filter membrane, interior water guide layer, outer water guide layer is uniformly set like this, such as, as shown in Figure 13, totally four blades (multiple structure) are rolled around core pipe 65, and can such as shown in Figure 8 outer ring be sealed, resulting in multiple-blade filter element. Compared to the filter element of special single blade, this mutliblade filter element is owing to having four water stream channels connected with core pipe 65, and its output will be bigger.

The multiple-blade filter element of the present invention and manufacture method thereof:

The invention provides a kind of novel filter element and its manufacture method, specifically, with reference to Figure 14, it illustrates the schematic diagram of multiple-blade filter element according to the present invention. It is made up of four single blade units 20,30,40,50 in the illustrated embodiment, in an alternative embodiment, can be made up of plural any amount of single blade unit, for instance two, three, five, ten etc. Each single blade unit 20,30,40,50 is identical with the structure before rolling of the single blade filter element shown in Fig. 5. Specifically, as shown in figure 15, single blade unit includes core pipe 201 and multiple structure, multiple structure includes the filter membrane 202 walking around core pipe 201, the interior water guide layer 203 being sandwiched between filter membrane 202 to connect with core pipe 201 and the outer water guide layer 204 investing on outside filter membrane 202. Just as shown in Figure 15, single blade unit 30,40,50 can have an identical structure.

Multiple-blade filter element according to an embodiment of the invention is rolled into together by four single blade units 20,30,40,50, for instance R direction as shown in figure 14 is rolled, and thus form the multiple-blade filter element according to the present invention. Specifically, the core pipe of each single blade unit is closely arranged, and hold multiple core pipe alternately with the multiple structure of each single blade unit. The filter element being rolled into limits the center channel 1000 in the middle part of filter element end face near multiple core pipes, after the multiple-blade filter element of the present invention is rolled into, the region that can fluid sealant is coated with to the two ends of filter element except center channel 1000, or as explained above with like that only making outer ring seal described in Fig. 8, or otherwise coating adhesive and retain water-flowing path. Or, the void area that ground floor leaf packet wraps near central canal retains water stream channel.

As shown in figure 16, end cap 42,43 is mounted respectively to the two ends of filter element 45 for guiding current, and is connected with downstream pipe. in one embodiment, end cap 42,43 can be installed before multilayer-wound structure, so that the core pipe position of each single blade unit is relatively fixed. in the embodiment shown in Figure 16, filter element 45 is installed in the filtration grade of purifier, such as filtration grade includes housing 44, housing 44 limits opening to allow the current I of upstream to enter filtration grade, the current I outermost multiple outer water guide layer 204 by filter element 45, 304, 404 grades enter filter element 45, wherein a road current I is as shown in figure 15, a part of current I passes through filter membrane 402, water guide layer 403 in entering, and enter in core pipe 401, right side as pure water current T filtration grade from Figure 16 exports (such as by means of pressure reduction), and the helix-type channel not continued along outer water guide layer 404 limits through the part of the current I of filter membrane flows to the central part of filter element, and from center channel 1000 or near it as go out current F from shown in Figure 16 left side discharge. discussed above individual blade is only related to although should be appreciated that. but for other blades, identical process occurs simultaneously.

The concrete principle of multiple-blade filter element according to the present invention has been illustrated above according to specific embodiment. The filter element of the present invention has the performance improved compared to existing various water cleaning systems filter elements, including: due to multichannel more flood flow, current faster due to longer more narrow passage, and owing to parallel water (flow) direction causes not having flow lower region or dead angle, based on these performances, the filter element of the present invention provides the water yield of improvement, the life-span of water purification rate and prolongation.

Although should be appreciated that the multiple-blade filter element of the present invention describes based on four blades, but same structure can based on two, and three or more blades perform. It is to be understood that, under feasible premise, water inlet in specific embodiments of the invention and the position of water out can exchange so that water (flow) direction is contrary, such as, for the embodiment in Figure 16, current I can import from left side port 42, and derive the water of the high concentration not passing through filter course from the upper side opening of housing 44.

It addition, present invention also offers the manufacture method of a kind of this kind of filter element, the method includes, and first manufactures at least two list blade unit, is the single blade unit 20,30,40,50 of manufacture in the illustrated embodiment. Each single blade unit all includes core pipe and multiple structure, and multiple structure includes the filter membrane walking around core pipe, the interior water guide layer being sandwiched between filter membrane to connect with core pipe and the outer water guide layer investing on outside filter membrane. The manufacture method of single blade unit is well known in the prior art, single blade filter element that namely single blade unit is actually in Fig. 1-6 do not roll before state. Subsequently the core pipe 201,301,401 of each single blade unit is gathered, and the multiple structure of each single blade unit is rolled around multiple core pipes alternately, to form filter element.

In one embodiment, as shown in figure 17, for forming more complete center channel 1000, the cross sectional shape of each core pipe 1200 can be set to a part for annular, in order to form complete center channel 1000 when gathering. Such as in the embodiment shown in Figure 17, adopt quaterfoil design, then the cross section of the core pipe of each blade can be set to quadrant annular. In the embodiment shown in Figure 17, other regions beyond filter element two ends place center channel 1000 can all adopt sealant sealing.

It should be appreciated that all above preferred embodiments are all exemplary rather than restrictive, various remodeling or deformation that particular embodiments described above is made by those skilled in the art under the design of the present invention all should at the legal scope of the present invention.

Claims

1. the filter element for purifier, it is characterized in that, described filter element includes at least two list blade unit, each described single blade unit all includes core pipe, and for wrapping up the multiple structure of described core pipe, the core pipe of each described single blade unit is closely arranged, and the multiple structure of each described single blade unit holds the multiple core pipes closely arranged alternately.

2. filter element according to claim 1, it is characterised in that described multiple structure includes the filter membrane walking around described core pipe, the interior water guide layer being sandwiched between described filter membrane to connect with described core pipe and the outer water guide layer investing on outside described filter membrane.

3. filter element according to claim 2, it is characterised in that described filter membrane includes supporting layer and invests the reverse osmosis membrane on described supporting layer.

4. filter element according to claim 1, it is characterised in that described filter element includes three to ten single blade units.

5. filter element according to claim 1, it is characterised in that the outer ring at the two ends of described filter element seals.

6. filter element according to claim 1, it is characterised in that the two ends of described filter element have center channel near core pipe place.

7. filter element according to claim 1, it is characterised in that the part that cross sectional shape is annular of the plurality of core pipe.

8. a purifier, it is characterised in that described purifier includes the filter element as according to any one of claim 1 to 7.

9. the manufacture method of a filter element, it is characterised in that described manufacture method includes manufacturing at least two list blade unit, and each described single blade unit all includes core pipe and for wrapping up the multiple structure of described core pipe; And

10. method according to claim 9, it is characterised in that the step that layout gathered by the described core pipe by each single blade unit includes being attached to by end cap on the core pipe of each single blade unit so that the relative position of each core pipe is fixed.

11. method according to claim 9, it is characterised in that described multiple structure includes the filter membrane walking around described core pipe, the interior water guide layer being sandwiched between described filter membrane to connect with described core pipe and the outer water guide layer investing on outside described filter membrane.

12. method according to claim 11, it is characterised in that described filter membrane includes supporting layer and invests the reverse osmosis membrane on described supporting layer.

13. method according to claim 9, it is characterised in that described filter element includes three to ten single blade units.

14. method according to claim 9, it is characterised in that the cross sectional shape of the core pipe of each described single blade unit manufactures a part for annular.

15. method according to claim 9, it is characterised in that described manufacture method also includes the step sealed the outer ring at filter element two ends.