WO1997006879A1 - Portable multi-stage filter unit for purifying water - Google Patents

Portable multi-stage filter unit for purifying water Download PDF

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Publication number
WO1997006879A1
WO1997006879A1 PCT/CH1995/000177 CH9500177W WO9706879A1 WO 1997006879 A1 WO1997006879 A1 WO 1997006879A1 CH 9500177 W CH9500177 W CH 9500177W WO 9706879 A1 WO9706879 A1 WO 9706879A1
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WO
WIPO (PCT)
Prior art keywords
filter
cleaning
water
activated carbon
filter device
Prior art date
Application number
PCT/CH1995/000177
Other languages
German (de)
French (fr)
Inventor
Adriano D'agostino
Original Assignee
Katadyn Produkte Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Katadyn Produkte Ag filed Critical Katadyn Produkte Ag
Priority to PCT/CH1995/000177 priority Critical patent/WO1997006879A1/en
Publication of WO1997006879A1 publication Critical patent/WO1997006879A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/18—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/20—Accessories; Auxiliary operations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/003—Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/006—Cartridges

Definitions

  • the invention relates to a portable filter device for water treatment according to the preamble of claim 1.
  • Devices of this type are e.g. Offered as a travel filter or trekking filter and are used to clean and disinfect water of poor quality.
  • Known designs usually have at least one filter with a pore size that prevents the passage of physiologically dangerous bacteria. They are also equipped with a pump that can be operated with muscle power and with which the water is pushed through the filter.
  • the object of the present invention is therefore to provide a filter device of the type mentioned at the outset which avoids this disadvantage as far as possible and achieves satisfactory results with water of different qualities. This object is achieved by the filter device according to claim 1.
  • the filter device has at least two cleaning filters and the water can optionally be passed through both or only through one, it is possible to adapt the filtering to the respective water quality in a simple manner. If one of the filters is not required, it can be switched off. This protects it. At the same time, the force required for pumping also decreases.
  • a first of the cleaning filters is preferably designed to retain physiologically harmful bacteria. Such a filter is required in most applications.
  • the second filter can then e.g. optionally be switched into the water flow before the first cleaning filter. In this case, since the first filter is always the last filter in the watercourse, bacteria are also removed that e.g. in the second filter.
  • the second filter it is recommended that the second filter have a larger pore or mesh size than the first filter, so that floating particles are only caught in the first filter and undesirable contamination of the second filter is avoided.
  • An activated carbon filter is particularly suitable as the second filter, if possible combined with a coarse mechanical prefilter. With such a filter e.g. unwanted odors are removed from the water, which is an ideal addition to a bacteria filter.
  • the activated carbon is preferably filled into a container in the form of granules, the inputs and outputs of the container simultaneously forming the mechanical prefilter.
  • the activated carbon granulate can be exchanged as a consumable in such a container, while the container itself can be reused.
  • a particularly compact arrangement of the various cleaning filters is achieved by arranging each cleaning filter concentrically around a section of a central pump cylinder.
  • FIG. 1 shows a side view of a preferred embodiment of the invention
  • FIG. 2 shows a view of the device according to FIG. 1 from above
  • Figure 3 shows a longitudinal section through the device of Figure 1 and Figure 4 is a schematic block diagram of the
  • FIGS. 1-3 The embodiment of the invention shown in FIGS. 1-3 is a compact small filter with a housing 1 and a handle 2.
  • a filter arrangement with an activated carbon filter 3, a ceramic filter 4 and a switchover 5 arranged, the operation of which is described below.
  • the activated carbon filter 3 and the cylindrical ceramic filter 4 are arranged concentrically around a section of a pump cylinder 6, which extends through the longitudinal axis of the housing.
  • a piston 7 runs in the pump cylinder 6 and is sealed with a piston ring 8 against the cylinder wall.
  • the piston 7 is connected to the handle 2 via a piston rod 9.
  • the handle 2 is essentially cup-shaped. It comprises an end wall 11 with a convex outer surface 12, which merges into a nose 13 protruding on one side of the handle. Furthermore, it has an essentially cylindrical side wall 14. Grip ribs 15 are formed on the outside of the side wall 14 and extend transversely to the longitudinal axis of the device.
  • the housing 1 is subdivided into a front-side housing area 18, a foot-side housing area 19, 20 and a middle area 21 lying in between.
  • the front housing area 18 is cup-shaped, has a round cross-section and encloses the activated carbon filter 3. It is fastened to the central area 21 with a bayonet thread 22 and can be opened to remove the activated carbon filter 3.
  • the foot-side housing area 19, 20 comprises a cylindrical wall area 19 and a cover 20.
  • the cover 20 is screwed into the cylindrical wall area 19 with a bayonet thread 23 and can be opened to remove the ceramic filter 4.
  • Horizontal grip ribs 16 run on the outside of the wall area 19.
  • a suction connection 25 is arranged in the central area 21 of the housing 1. It is used to fasten a hose through which the water to be cleaned is fed.
  • the outlet 26 for the purified water is located at the foot of the device. It is set back in a thread 27 with which a standardized water bottle can be attached to the device.
  • Figure 3 shows the handle 2 in its rest position. In this rest position, its side wall 14 encloses the front housing area 18.
  • the inner cross section of the handle 2 essentially corresponds to the outer cross section of the housing area 18, so that in the rest position of the handle there is only a small distance between the two parts.
  • a rib 28 At the lower end of the side wall 14 of the handle 2 there is a rib 28 which is snapped into a groove 29 in the housing.
  • the handle When using the device, the handle is repeatedly moved back and forth in the longitudinal direction of the housing.
  • the user grips the handle 2 with the first hand and the housing 1 with the second hand.
  • the palm of the first hand preferably rests on the convex surface 12 and the fingers grip the side wall 14.
  • the changeover switch 5 If the changeover switch 5 is in its first (upper in FIG. 4) position, the water is passed through the space 33, the activated carbon filter 3 and line 35 back to the changeover switch 5 and from there via line 36 and ceramic filter 4 to the drain 26 . If the switch 5 is in its second position, the water reaches the ceramic filter 4 via line 36 and from there to the drain 26 without passing through the activated carbon filter 3.
  • the activated carbon filter 3 can optionally be switched into the filter path upstream of the ceramic filter 4. This has the advantage that the activated carbon filter 3 is only used when it is really needed. This increases the lifespan of this filter.
  • the activated carbon filter 3 serves primarily to improve the taste and dechlorination of the water. It preferably consists of an activated carbon granulate based on coconut shell with a granulate size of e.g. 12 - 100 USS, preferably 30 to 50 USS and is enclosed in a container 40.
  • the container 40 has inlet and outlet openings, in each of which a filter network 41 or 42 with a mesh size of approximately 10 ⁇ m, e.g. 50 microns is arranged.
  • This filter network prevents coarse suspended particles from entering the activated carbon granules and getting caught there. Finer particles are not stopped by the activated carbon granulate and get into the ceramic filter. Thus, unnecessary contamination of the activated carbon granulate is avoided.
  • the activated carbon granules in the container 40 can be replaced, while the container 40 with the filter networks 41, 42 can be reused.
  • the ceramic filter 4 serves to retain physiologically harmful bacteria. terien. It consists, for example, of a ceramic based on diatomaceous earth and has a pore size of 0.2 ⁇ m, for example, which is sufficiently small to prevent the passage of such bacteria.
  • Activated carbon filter has the advantage that any bacteria from the activated carbon filter are retained. Unwanted contamination of the activated carbon filter is prevented by the relatively large granule size and the mesh filter 41, 42. Very coarse suspended matter sticks to the mesh filters, while finer suspended matter passes through the activated carbon granulate unhindered and is collected in the ceramic filter 4.
  • the shape of the handle shown in Figure 1 is only one of the possible embodiments of the invention. So the handle and e.g. also have an oval or rectangular cross section.
  • the nose 13 can also be chosen larger at the expense of compactness or can be omitted entirely.
  • the side wall 14 does not have to be closed, it can also encompass only part of the housing laterally.
  • another filter material can also be used to retain bacteria. Depending on the application, this can also be done
  • Activated carbon filter 3 can be replaced by another filter type.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The filter unit proposed includes a housing (1) and a hand-operated pump (2, 6, 7, 8). Disposed concentrically round the pump cylinder (6) are an activated-charcoal filter (3) and a ceramic filter (4). The charcoal filter (3) is used to remove any taste from the water while the ceramic filter (4) is used to remove microbes. A selector switch (5) controls the flow of water through the filters. The water can either be passed only through the ceramic filter (4) or be passed first through the charcoal filter (3) and then through the ceramic filter (4). This makes it possible to adapt the filter unit to the quality of the water being purified and to make the charcoal filter (3) last longer.

Description

Portable Filtervorrichtung zur Wasserauf¬ bereitung mit mehreren Filterstufen Portable filter device for water treatment with several filter stages
Die Erfindung betrifft eine portable Filter¬ vorrichtung zur Wasseraufbereitung gemäss dem Oberbegriff von Anspruch 1. Geräte dieser Art werden z.B. als Reisefilter oder Trekkingfilter angeboten und dienen zur Reinigung und Entkeimung von Wasser mangelhafter Qualität.The invention relates to a portable filter device for water treatment according to the preamble of claim 1. Devices of this type are e.g. Offered as a travel filter or trekking filter and are used to clean and disinfect water of poor quality.
Bekannte Ausführungen besitzen meist minde¬ stens ein Filter mit einer Porengrösse, die einen Durch- tritt physiologisch gefährlicher Bakterien verhindert. Ferner sind sie mit einer Pumpe ausgerüstet, die mit Muskelkraft betrieben werden kann und mit der das Wasser durch das Filter gedrückt wird.Known designs usually have at least one filter with a pore size that prevents the passage of physiologically dangerous bacteria. They are also equipped with a pump that can be operated with muscle power and with which the water is pushed through the filter.
' Portable Geräte werden mit Wasser unter- schiedlicher Qualität betrieben. Deshalb muss bei der'Portable devices are operated with water of different quality. Therefore, the
Wahl der in das Gerät einzubauenden Filter ein Kompromiss getroffen werden, der bei allen Wasserarten ein befrie¬ digendes Resultat zeigt. In der Praxis ist dies jedoch nicht oder nur mit beträchtlichem Aufwand möglich. Aufgabe der vorliegenden Erfindung ist des¬ halb die Bereitstellung einer Filtervorrichtung der ein¬ gangs genannten Art, die diesen Nachteil möglichst weit¬ gehend vermeidet und bei Wasser unterschiedlicher Quali¬ tät befriedigende Resultate erreicht. Diese Aufgabe wird von der Filtervorrichtung gemäss Anspruch 1 erfüllt.When choosing the filter to be installed in the device, a compromise must be made which shows a satisfactory result with all types of water. In practice, however, this is not possible or only possible with considerable effort. The object of the present invention is therefore to provide a filter device of the type mentioned at the outset which avoids this disadvantage as far as possible and achieves satisfactory results with water of different qualities. This object is achieved by the filter device according to claim 1.
Da die Filtervorrichtung mindestens zwei Reinigungsfilter aufweist und das Wasser wahlweise nach¬ einander durch beide oder nur durch eines geführt werden kann, wird es möglich, die Filterung in einfacher Weise der jeweiligen Wasserqualität anzupassen. Wird eines der Filter nicht benötigt, so kann es ausgeschaltet werden. Damit wird es geschont. Gleichzeitig nimmt auch die zum Pumpen benötigte Kraft ab.Since the filter device has at least two cleaning filters and the water can optionally be passed through both or only through one, it is possible to adapt the filtering to the respective water quality in a simple manner. If one of the filters is not required, it can be switched off. This protects it. At the same time, the force required for pumping also decreases.
Vorzugsweise ist ein erstes der Reinigungs¬ filter zur Rückhaltung physiologisch schädlicher Bakte- rien ausgestaltet. Ein solches Filter wird in den meisten Anwendungen benötigt. Das zweite Filter kann dann z.B. wahlweise vor dem ersten Reinigungsfilter in den Wasser¬ lauf eingeschaltet werden. Da in diesem Falle das erste Filter immer das letzte Filter im Wasserlauf ist, werden auch Bakterien entfernt, die sich z.B. im zweiten Filter festgesetzt haben.A first of the cleaning filters is preferably designed to retain physiologically harmful bacteria. Such a filter is required in most applications. The second filter can then e.g. optionally be switched into the water flow before the first cleaning filter. In this case, since the first filter is always the last filter in the watercourse, bacteria are also removed that e.g. in the second filter.
Es empfiehlt sich in diesem Falle, dass das zweite Filter eine grössere Poren- bzw. Maschengrösse als das erste Filter besitzt, so dass Schwebeteilchen erst im ersten Filter aufgefangen werden und eine unerwünschte Verschmutzung des zweiten Filters vermieden wird.In this case, it is recommended that the second filter have a larger pore or mesh size than the first filter, so that floating particles are only caught in the first filter and undesirable contamination of the second filter is avoided.
Als zweites Filter eignet εich insbesondere ein Aktivkohlefilter, möglichst kombiniert mit einem groben mechanischen Vorfilter. Mit einem solchen Filter können z.B. unerwünschte Gerüche aus dem Wasser entfernt werden, was eine ideale Ergänzung zu einer Bakterienfil¬ terung darstellt. Dabei wird die Aktivkohle vorzugsweise als Granulat in einen Behälter gefüllt, wobei die Ein¬ bzw. Ausgänge des Behälters gleichzeitig das mechanische Vorfilter bilden. Das Aktivkohle-Granulat kann als Ver¬ brauchsmaterial in einem solchen Behälter ausgetauscht werden, während der Behälter selbst wiederverwendbar ist.An activated carbon filter is particularly suitable as the second filter, if possible combined with a coarse mechanical prefilter. With such a filter e.g. unwanted odors are removed from the water, which is an ideal addition to a bacteria filter. The activated carbon is preferably filled into a container in the form of granules, the inputs and outputs of the container simultaneously forming the mechanical prefilter. The activated carbon granulate can be exchanged as a consumable in such a container, while the container itself can be reused.
Eine besonders kompakte Anordnung der ver¬ schiedenen Reinigungsfilter wird erreicht, indem jedes Reinigungsfilter konzentrisch um einen Abschnitt eines zentralen Pumpzylinders angeordnet wird.A particularly compact arrangement of the various cleaning filters is achieved by arranging each cleaning filter concentrically around a section of a central pump cylinder.
Weitere Anwendungen, Vorteile und Ausführun¬ gen der Erfindung ergeben sich aus der nun folgenden Beschreibung einer bevorzugten Ausführung anhand der Figuren. Dabei zeigen:Further applications, advantages and embodiments of the invention result from the following description of a preferred embodiment with reference to the figures. Show:
Figur 1 eine Seitenansicht einer bevorzugten Ausführung der Erfindung, Figur 2 eine Ansicht der Vorrichtung nach Figur 1 von oben,FIG. 1 shows a side view of a preferred embodiment of the invention, FIG. 2 shows a view of the device according to FIG. 1 from above,
Figur 3 einen Längsschnitt durch die Vor¬ richtung von Figur 1 und Figur 4 ein schematisches Blockdiagramm desFigure 3 shows a longitudinal section through the device of Figure 1 and Figure 4 is a schematic block diagram of the
Wasserlaufs in der Vorrichtung von Figur 1.Water flow in the device of Figure 1.
Bei der in den Figuren 1 - 3 gezeigten Aus¬ führung der Erfindung handelt es sich um ein kompaktes Kleinfilter mit einem Gehäuse 1 und einem Griff 2. Im Gehäuse 1 ist eine Filteranordnung mit einem Aktivkohle¬ filter 3, einem Keramikfilter 4 und einer Umschaltung 5 angeordnet, deren Funktionsweise weiter unten beschrieben wird.The embodiment of the invention shown in FIGS. 1-3 is a compact small filter with a housing 1 and a handle 2. In the housing 1 there is a filter arrangement with an activated carbon filter 3, a ceramic filter 4 and a switchover 5 arranged, the operation of which is described below.
Das Aktivkohlefilter 3 und das zylindrische Keramikfilter 4 sind konzentrisch um je einen Abschnitt eines Pumpzylinders 6 angeordnet, der sich durch die Längsachse des Gehäuses erstreckt. Im Pumpzylinder 6 läuft ein Kolben 7, der mit einem Kolbenring 8 gegen die Zylinderwahd abgedichtet ist. Der Kolben 7 ist über eine Kolbenstange 9 mit dem Griff 2 verbunden.The activated carbon filter 3 and the cylindrical ceramic filter 4 are arranged concentrically around a section of a pump cylinder 6, which extends through the longitudinal axis of the housing. A piston 7 runs in the pump cylinder 6 and is sealed with a piston ring 8 against the cylinder wall. The piston 7 is connected to the handle 2 via a piston rod 9.
Der Griff 2 ist im wesentlichen becherförmig ausgeführt. Er umfasst eine endseitige Stirnwand 11 mit konvexer Aussenflache 12, die in eine, auf einer Seite des Griffs hervorstehende Nase 13 übergeht. Ferner be- sitzt er eine im wesentlichen zylindrische Seitenwand 14. Auf der Aussenseite der Seitenwand 14 sind Griffrippen 15 ausgeformt, welche sich quer zur Längsachse des Geräts erstrecken.The handle 2 is essentially cup-shaped. It comprises an end wall 11 with a convex outer surface 12, which merges into a nose 13 protruding on one side of the handle. Furthermore, it has an essentially cylindrical side wall 14. Grip ribs 15 are formed on the outside of the side wall 14 and extend transversely to the longitudinal axis of the device.
Das Gehäuse 1 ist in einen stirnseitigen Ge- häusebereich 18, einen fusseitigen Gehäusebereich 19, 20 und einen dazwischen liegenden Mittelbereich 21 unter¬ teilt. Der stirnseitige Gehäusebereich 18 ist becherför¬ mig, hat einen runden Querschnitt und umschliesst das Aktivkohlefilter 3. Er ist mit einem Bajonettgewinde 22 am Mittelbereich 21 befestigt und kann zur Entnahme des Aktivkohlefilters 3 geöffnet werden. Der fusseitige Ge¬ häusebereich 19, 20 umfasst einen zylindrischen Wand- bereich 19 und einen Verschlussdeckel 20. Der Verschluss¬ deckel 20 ist mit einem Bajonettgewinde 23 im zylindri¬ schen Wandbereich 19 eingeschraubt und kann zur Entnahme des Keramikfilters 4 geöffnet werden. An der Aussenseite des Wandbereichs 19 verlaufen horizontale Griffrippen 16. Im Mittelbereich 21 des Gehäuses 1 ist seit¬ lich ein Ansauganschluss 25 angeordnet. Er dient zur Be¬ festigung eines Schlauches, durch den das zu reinigende Wasser zugeführt wird. Der Auslass 26 für das gereinigte Wasser befindet sich am Fussende des Geräts. Er ist zu¬ rückversetzt in einem Gewinde 27 angeordnet, mit welchem eine genormte Wasserflasche am Gerät befestigt werden kann.The housing 1 is subdivided into a front-side housing area 18, a foot-side housing area 19, 20 and a middle area 21 lying in between. The front housing area 18 is cup-shaped, has a round cross-section and encloses the activated carbon filter 3. It is fastened to the central area 21 with a bayonet thread 22 and can be opened to remove the activated carbon filter 3. The foot-side housing area 19, 20 comprises a cylindrical wall area 19 and a cover 20. The cover 20 is screwed into the cylindrical wall area 19 with a bayonet thread 23 and can be opened to remove the ceramic filter 4. Horizontal grip ribs 16 run on the outside of the wall area 19. A suction connection 25 is arranged in the central area 21 of the housing 1. It is used to fasten a hose through which the water to be cleaned is fed. The outlet 26 for the purified water is located at the foot of the device. It is set back in a thread 27 with which a standardized water bottle can be attached to the device.
Figur 3 zeigt den Griff 2 in seiner Ruhestel- lung. In dieser Ruhestellung umschliesst seine Seitenwand 14 den stirnseitigen Gehäusebereich 18. Der Innenquer¬ schnitt des Griffs 2 entspricht im wesentlichen dem Aus- senquerschnitt des Gehäusebereichs 18, so dass in der Ruhestellung des Griffs zwischen den beiden Teilen nur ein kleiner Abstand bleibt. Am unteren Ende der Seiten¬ wand 14 des Griffs 2 befindet sich eine Rippe 28, die in eine Nut 29 des Gehäuses eingeschnappt ist.Figure 3 shows the handle 2 in its rest position. In this rest position, its side wall 14 encloses the front housing area 18. The inner cross section of the handle 2 essentially corresponds to the outer cross section of the housing area 18, so that in the rest position of the handle there is only a small distance between the two parts. At the lower end of the side wall 14 of the handle 2 there is a rib 28 which is snapped into a groove 29 in the housing.
Im folgenden wird nun die Funktionsweise des Geräts unter Bezug auf die Figuren 3 und 4 beschrieben. Bei der Anwendung des Geräts wird der Griff wiederholt in Längsrichtung des Gehäuses hin- und her¬ bewegt. Hierzu ergreift der Anwender den Griff 2 mit der ersten und das Gehäuse 1 mit der zweiten Hand. Vorzugs¬ weise ruht der Handballen der ersten Hand auf der kon- vexen Fläche 12 und die Finger umgreifen die Seitenwand 14.The operation of the device will now be described with reference to FIGS. 3 and 4. When using the device, the handle is repeatedly moved back and forth in the longitudinal direction of the housing. For this purpose, the user grips the handle 2 with the first hand and the housing 1 with the second hand. The palm of the first hand preferably rests on the convex surface 12 and the fingers grip the side wall 14.
Beim Herausziehen des Griffs wird über den Ansauganschluss 25 und ein erstes Rückschlagventil 31 Wasser in den Pumpzylinder 6 gesogen. Beim Hineinstossen des Griffs schliesst das erste Rückschlagventil 31 und das Wasser wird durch ein zweites (in Figur 3 nicht sichtbares) Rückschlagventil 32 zum Umschalter 5 ge- drängt. Der weitere Weg des Wassers hängt davon ab, in welcher Stellung sich der Umschalter 5 befindet.When the handle is pulled out, water is drawn into the pump cylinder 6 via the suction connection 25 and a first check valve 31. When the handle is pushed in, the first check valve 31 closes and the water is passed to the changeover switch 5 by a second check valve 32 (not visible in FIG. 3). urges. The further path of the water depends on the position of the changeover switch 5.
Befindet sich der Umschalter 5 in seiner ersten (in Fig. 4 oberen) Stellung, so wird das Wasser durch den Raum 33, das Aktivkohlefilter 3, und Leitung 35 zurück zum Umschalter 5 und von dort über Leitung 36 und Keramikfilter 4 zum Abfluss 26 geleitet. Ist Umschalter 5 in seiner zweiten Stellung, so gelangt das Wasser über Leitung 36 direkt zum Keramikfilter 4 und von dort zum Abfluss 26, ohne dass das Aktivkohlefilter 3 passiert wird.If the changeover switch 5 is in its first (upper in FIG. 4) position, the water is passed through the space 33, the activated carbon filter 3 and line 35 back to the changeover switch 5 and from there via line 36 and ceramic filter 4 to the drain 26 . If the switch 5 is in its second position, the water reaches the ceramic filter 4 via line 36 and from there to the drain 26 without passing through the activated carbon filter 3.
Somit kann also das Aktivkohlefilter 3 wahl¬ weise vor dem Keramikfilter 4 in den Filterpfad einge¬ schaltet werden. Dies hat den Vorteil, dass das Aktiv- kohlefilter 3 nur dann verwendet wird, wenn es wirklich benötigt wird. Damit wird die Lebensdauer dieses Filters erhöht.Thus, the activated carbon filter 3 can optionally be switched into the filter path upstream of the ceramic filter 4. This has the advantage that the activated carbon filter 3 is only used when it is really needed. This increases the lifespan of this filter.
Das Aktivkohlefilter 3 dient in erster Linie zur Geschmacksverbesserung und Entchlorung des Wassers. Es besteht vorzugsweise aus einem Aktivkohlegranulat auf Kokosnussschalen-Basis mit einer Granulatgrösse von z.B. 12 - 100 USS, vorzugsweise 30 bis 50 USS und ist in einem Behälter 40 eingeschlossen. Der Behälter 40 weist Ein- und Auslassöffnungen auf, in welchen je ein Filternetz 41 bzw. 42 mit einer Maschenweite von möglichst ca. 10 μm, z.B. 50 μm, angeordnet ist. Mit diesem Filternetz wird verhindert, dass grobe Schwebepartikel ins Aktivkohle¬ granulat gelangen und dort hängen bleiben. Feinere Parti¬ kel werden vom Aktivkohlegranulat nicht aufgehalten und gelangen ins Keramikfilter. Somit wird also eine unnötige Verschmutzung des Aktivkohlegranulats vermieden.The activated carbon filter 3 serves primarily to improve the taste and dechlorination of the water. It preferably consists of an activated carbon granulate based on coconut shell with a granulate size of e.g. 12 - 100 USS, preferably 30 to 50 USS and is enclosed in a container 40. The container 40 has inlet and outlet openings, in each of which a filter network 41 or 42 with a mesh size of approximately 10 μm, e.g. 50 microns is arranged. This filter network prevents coarse suspended particles from entering the activated carbon granules and getting caught there. Finer particles are not stopped by the activated carbon granulate and get into the ceramic filter. Thus, unnecessary contamination of the activated carbon granulate is avoided.
Zur Erneuerung des Filters 3 kann das Aktiv¬ kohlegranulat im Behälter 40 ausgetauscht werden, während der Behälter 40 mit den Filternetzen 41, 42 wiederver- wendbar ist.To renew the filter 3, the activated carbon granules in the container 40 can be replaced, while the container 40 with the filter networks 41, 42 can be reused.
Das Keramikfilter 4 dient, wie bereits er¬ wähnt, zur Rückhaltung von physiologisch schädlichen Bak- terien. Es besteht z.B. aus einer Keramik auf der Basis von Diatomeen-Erde und weist eine Porengrösse von z.B. 0.2 μm auf, die genügend klein ist, um den Durchtritt solcher Bakterien zu verhindern. Die Anordnung des Keramikfilters nach demAs already mentioned, the ceramic filter 4 serves to retain physiologically harmful bacteria. terien. It consists, for example, of a ceramic based on diatomaceous earth and has a pore size of 0.2 μm, for example, which is sufficiently small to prevent the passage of such bacteria. The arrangement of the ceramic filter according to the
Aktivkohlefilter hat den Vorteil, dass allfällige Bak¬ terien aus dem Aktivkohlefilter zurückbehalten werden. Eine unerwünschte Verschmutzung des Aktiv¬ kohlefilters wird durch die relativ grosse Granulatgrösse und die Maschenfilter 41, 42 verhindert. Sehr grobe Schwebstoffe bleiben an den Maschenfiltern hängen, während feinere Schwebstoffe das Aktivkohlegranulat ungehindert passieren und im Keramikfilter 4 aufgefangen werden. Die in Figur 1 gezeigte Form des Griffs ist nur eine der möglichen Ausführungen der Erfindung. So kann der Griff und z.B. auch einen ovalen oder rechteckigen Querschnitt haben. Die Nase 13 kann auf Kosten der Kompaktheit auch grosser gewählt werden oder ganz entfallen. Die Seitenwand 14 braucht nicht geschlossen zu sein, sie kann auch nur einen Teil des Gehäuses seitlich umfassen.Activated carbon filter has the advantage that any bacteria from the activated carbon filter are retained. Unwanted contamination of the activated carbon filter is prevented by the relatively large granule size and the mesh filter 41, 42. Very coarse suspended matter sticks to the mesh filters, while finer suspended matter passes through the activated carbon granulate unhindered and is collected in the ceramic filter 4. The shape of the handle shown in Figure 1 is only one of the possible embodiments of the invention. So the handle and e.g. also have an oval or rectangular cross section. The nose 13 can also be chosen larger at the expense of compactness or can be omitted entirely. The side wall 14 does not have to be closed, it can also encompass only part of the housing laterally.
Anstelle des Keramikfilters 4 kann auch ein anderes Filtermaterial zur Rückhaltung von Bakterien ver- wendet werden. Je nach Anwendung kann auch dasInstead of the ceramic filter 4, another filter material can also be used to retain bacteria. Depending on the application, this can also be done
Aktivkohlefilter 3 durch einen anderen Filtertyp ersetzt werden.Activated carbon filter 3 can be replaced by another filter type.
Während obige Beschreibung eine zur Zeit be¬ vorzugte Ausführung der Erfindung beschreibt, so muss darauf hingewiesen werden, dass die Erfindung nicht darauf beschränkt ist und im Rahmen der folgenden Ansprüche in verschiedenster Weise ausgeführt werden kann. While the above description describes a currently preferred embodiment of the invention, it must be pointed out that the invention is not restricted to this and can be carried out in various ways within the scope of the following claims.

Claims

Patentansprüche claims
1. Portable Filtervorrichtung zur Wasserauf¬ bereitung mit einer Filteranordnung und einer mit Muskel¬ kraft betätigbaren Pumpe (6, 7, 8) dadurch gekennzeich- net, dass die Filteranordnung mindestens zwei Reinigungs¬ filter (3, 4) und einen Umschalter (5) aufweist, wobei mit dem Umschalter (5) zu reinigendes Wasser wahlweise nacheinander durch beide oder nur durch eines der Reini¬ gungsfilter (3, 4) leitbar ist. 1. Portable filter device for water treatment with a filter arrangement and a pump (6, 7, 8) that can be actuated with muscle power, characterized in that the filter arrangement has at least two cleaning filters (3, 4) and a changeover switch (5). The water to be cleaned with the changeover switch (5) can optionally be passed in succession through both or only through one of the cleaning filters (3, 4).
2. Filtervorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein erstes (4) der Reinigungsfilter ein Filter zur Rückhaltung physiologisch schädlicher Bak¬ terien ist.2. Filter device according to claim 1, characterized in that a first (4) of the cleaning filter is a filter for retaining physiologically harmful bacteria.
3. Filtervorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass das erste Reinigungsfilter (4) ein3. Filter device according to claim 2, characterized in that the first cleaning filter (4)
Keramikfilter ist.Ceramic filter is.
4. Filtervorrichtung nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass das zu reinigende Wasser mit dem Umschalter (5) wahlweise zuerst durch ein zweites (3) der Reinigungsfilter und dann durch das erste Reinigungsfilter (4) oder nur durch das erste Reinigungs¬ filter (4) leitbar ist.4. Filter device according to one of claims 2 or 3, characterized in that the water to be cleaned with the switch (5) optionally first through a second (3) of the cleaning filter and then through the first cleaning filter (4) or only by the first cleaning ¬ filter (4) is conductive.
5. Filtervorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass das zweite Reinigungsfilter (3) für wesentlich grössere Partikel durchlässig ist als das erste Reinigungsfilter.5. Filter device according to claim 4, characterized in that the second cleaning filter (3) is permeable to much larger particles than the first cleaning filter.
6. Filtervorrichtung nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass das zweite Reini¬ gungsfilter (3) eine Filterstufe mit Aktivkohle umfasst. 6. Filter device according to one of claims 4 or 5, characterized in that the second cleaning filter (3) comprises a filter stage with activated carbon.
7. Filtervorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass vor der Filterstufe mit Aktivkohle ein mechanisches Vorfilter (41) angeordnet ist. 7. Filter device according to claim 6, characterized in that a mechanical pre-filter (41) is arranged in front of the filter stage with activated carbon.
8. Filtervorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass das Vorfilter (41) eine Porengrösse von mindestens 10 μm, vorzugsweise ca. 50 μm, aufweist.8. Filter device according to claim 7, characterized in that the pre-filter (41) has a pore size of at least 10 microns, preferably about 50 microns.
9. Filtervorrichtung nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass das zweite Reini¬ gungsfilter ein Aktivkohle-Granulat (3) in einem Behälter (40) aufweist, wobei das Vorfilter (41) am Behälter (40) angeordnet ist.9. Filter device according to one of claims 7 or 8, characterized in that the second cleaning filter comprises an activated carbon granulate (3) in a container (40), the pre-filter (41) being arranged on the container (40).
10. Filtervorrichtung nach einem der voran- gehenden Ansprüche, dadurch gekennzeichnet, dass die10. Filter device according to one of the preceding claims, characterized in that the
Pumpe einen Pumpzylinder- (6) aufweist und dass ein erstes (4) der Reinigungsfilter konzentrisch um einen ersten Ab¬ schnitt des Pumpzylinders, und ein zweites (3) der Reini¬ gungsfilter konzentrisch um einen zweiten Abschnitt des Pumpzylinders angeordnet ist.Pump has a pump cylinder (6) and that a first (4) of the cleaning filter is arranged concentrically around a first section of the pump cylinder, and a second (3) of the cleaning filter is arranged concentrically around a second section of the pump cylinder.
11. Filtervorrichtung nach Anspruch 10, da¬ durch gekennzeichnet, dass der Umschalter (5) zwischen dem ersten und dem zweiten Reinigungsfilter (3 bzw. 4) angeordnet ist. 11. Filter device according to claim 10, characterized in that the changeover switch (5) is arranged between the first and the second cleaning filter (3 or 4).
PCT/CH1995/000177 1995-08-11 1995-08-11 Portable multi-stage filter unit for purifying water WO1997006879A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
PCT/CH1995/000177 WO1997006879A1 (en) 1995-08-11 1995-08-11 Portable multi-stage filter unit for purifying water

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US6001249A (en) * 1997-11-06 1999-12-14 Dart Industries Inc. Multi-stage water filter system
WO2000002816A1 (en) * 1998-07-09 2000-01-20 Clear Water 42 Holding Asa Activated carbon filter, ceramic filter element and water purification system comprising both filters
WO2002042217A1 (en) * 2000-11-22 2002-05-30 Polar Light Limited Filter assembly for a household water purifier
WO2005068367A2 (en) * 2004-01-07 2005-07-28 Longmark Industries, Llc Environmental sanitizer and odor remover for purification of foods, surfaces, air and water with disposable ozone generation electrode, pressure/flow adaptable venturi injector and aqueous phase filter device
WO2016049674A1 (en) 2014-10-01 2016-04-07 Deltacore Gmbh Device for filtering water
WO2018104737A1 (en) * 2016-12-07 2018-06-14 Icon Lifesaver Limited A drinking bottle
WO2021152561A1 (en) * 2020-01-30 2021-08-05 S.B.I.D Solutions, Enterprise And Investments Ltd. Hot and cold water dispenser with filter for weekday and sabbath and method
US11413558B1 (en) 2018-11-28 2022-08-16 Gautham Parangusa Das Water filtration apparatus and process
US12091330B2 (en) 2022-03-17 2024-09-17 Gautham Parangusa Das Apparatus and process for removing PFAS and PFAS compounds from water

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6001249A (en) * 1997-11-06 1999-12-14 Dart Industries Inc. Multi-stage water filter system
WO2000002816A1 (en) * 1998-07-09 2000-01-20 Clear Water 42 Holding Asa Activated carbon filter, ceramic filter element and water purification system comprising both filters
WO2002042217A1 (en) * 2000-11-22 2002-05-30 Polar Light Limited Filter assembly for a household water purifier
US10799608B2 (en) 2004-01-07 2020-10-13 Badger-Veripure, Llc Environmental sanitizer and odor remover for purification of foods, surfaces, air and water with disposable ozone generation electrode, pressure/flow adaptable venturi injector and aqueous phase filter device
WO2005068367A2 (en) * 2004-01-07 2005-07-28 Longmark Industries, Llc Environmental sanitizer and odor remover for purification of foods, surfaces, air and water with disposable ozone generation electrode, pressure/flow adaptable venturi injector and aqueous phase filter device
WO2005068367A3 (en) * 2004-01-07 2006-05-26 Longmark Ind Llc Environmental sanitizer and odor remover for purification of foods, surfaces, air and water with disposable ozone generation electrode, pressure/flow adaptable venturi injector and aqueous phase filter device
US7524466B2 (en) 2004-01-07 2009-04-28 Longmark Industries, L.L.C. Environmental sanitizer and odor remover for purification of foods, surfaces, air and water with disposable ozone generation electrode, pressure/flow adaptable venturi injector and aqueous phase filter device
US8377385B2 (en) 2004-01-07 2013-02-19 Veripure, Llc Environmental sanitizer and odor remover for purification of foods, surfaces, air and water with disposable ozone generation electrode, pressure/flow adaptable venturi injector and aqueous phase filter device
US8834804B2 (en) 2004-01-07 2014-09-16 Veripure, Llc Environmental sanitizer and odor remover for purification of foods, surfaces, air and water with disposable ozone generation electrode, pressure/flow adaptable venturi injector and aqueous phase filter device
US9585979B2 (en) 2004-01-07 2017-03-07 Veripure, Llc Environmental sanitizer and odor remover for purification of foods, surfaces, air and water with disposable ozone generation electrode, pressure/flow adaptable venturi injector and aqueous phase filter device
WO2016049674A1 (en) 2014-10-01 2016-04-07 Deltacore Gmbh Device for filtering water
WO2018104737A1 (en) * 2016-12-07 2018-06-14 Icon Lifesaver Limited A drinking bottle
JP2020507447A (en) * 2016-12-07 2020-03-12 アイコン ライフセイバー リミテッドＩｃｏｎ Ｌｉｆｅｓａｖｅｒ Ｌｉｍｉｔｅｄ Water bottle
GB2573258A (en) * 2016-12-07 2019-10-30 Icon Lifesaver Ltd A drinking bottle
US11046606B2 (en) 2016-12-07 2021-06-29 Icon Lifesaver Limited Drinking bottle
JP7065095B2 (en) 2016-12-07 2022-05-11 アイコン ライフセイバー リミテッド Water bottle
GB2573258B (en) * 2016-12-07 2023-02-01 Icon Lifesaver Ltd A drinking bottle
US11413558B1 (en) 2018-11-28 2022-08-16 Gautham Parangusa Das Water filtration apparatus and process
WO2021152561A1 (en) * 2020-01-30 2021-08-05 S.B.I.D Solutions, Enterprise And Investments Ltd. Hot and cold water dispenser with filter for weekday and sabbath and method
IL272387B1 (en) * 2020-01-30 2023-11-01 Cohen Shemon Hot and cold water dispenser and method
US12091330B2 (en) 2022-03-17 2024-09-17 Gautham Parangusa Das Apparatus and process for removing PFAS and PFAS compounds from water

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