CH681861A5 - Vacuum filtration appts. - is connected to mechanical valve by two channel from main body chambers and has elastic plug seal under main body - Google Patents
Vacuum filtration appts. - is connected to mechanical valve by two channel from main body chambers and has elastic plug seal under main body Download PDFInfo
- Publication number
- CH681861A5 CH681861A5 CH2921/90A CH292190A CH681861A5 CH 681861 A5 CH681861 A5 CH 681861A5 CH 2921/90 A CH2921/90 A CH 2921/90A CH 292190 A CH292190 A CH 292190A CH 681861 A5 CH681861 A5 CH 681861A5
- Authority
- CH
- Switzerland
- Prior art keywords
- main body
- channel
- vacuum
- appts
- vacuum filtration
- Prior art date
Links
- 238000003828 vacuum filtration Methods 0.000 title claims abstract description 7
- 238000001914 filtration Methods 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 238000011045 prefiltration Methods 0.000 description 2
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/085—Funnel filters; Holders therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A vacuum filtration appts. is connected to a switching valve via two vacuum channels. One channel enters an annular chamber in the main body occupied by a piston which presses onto a filter membrane. A second channel enters a separate chamber in the centre of the main body. Underneath the body is an elastic sealing plug which has a spherical surface. Sample tubes are pressed against the sealing plug which surrounds an outlet tube. ADVANTAGE - Allows use of greatly differing filter attachments and collecting tubes both of which are easily attached to the main body without mechanical mean
Description
Die Erfindung betrifft ein Vacuum-Filtrationsgerät, das die Verwendung verschiedenster Auffanggeräte und Filteraufsätze ermöglicht.
Bei den bisher bekannten Vacuum-Filtrationsgeräten, die das Sammeln sowohl des Filtrates wie des Rückstandes gestatten, dient für den Anschluss des Filtriergefässes an den Gerätekörper und Festhalten der Filtermembrane entweder ein Schraubverschluss mit Dichtungsring oder die beiden Teile werden mittels einer Klemme verbunden.
Das Anschlussprozedere ist meist zeitraubend, die Fixation der Membrane eher unsicher. Ein Anschluss an verschieden grosse Sammelgefässe ist im allgemeinen nicht möglich, da entweder das Gefäss mit dem Gerätekörper direkt verbunden ist oder dieses mit einem Zapfen, der in die \ffnung des Vacuumgefässes passt, verschlossen ist.
Die Erfindung stellt sich die Aufgabe, ein Vacuum-Filtrationsgerät zu schaffen, welches einerseits gestattet den Filteraufsatz und das Sammelgefäss für das Filtrat ohne mechanische Manipulationen am Gerätekörper zu fixieren. Ferner soll ermöglicht werden, nach Art und Grösse sehr unterschiedliche Filteraufsätze und Sammelgefässe zu verwenden.
Die wesentlichen Merkmale des Erfindungsgegenstandes ergeben sich aus dem Patentanspruch 1.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert, in dieser zeigen:
Fig. 1 das Filtrationsgerät als Ganzes, im Schnitt,
Fig. 1a den Gerätekörper im Schnitt und Draufsicht,
Fig. 2 den Mehrzweckanschlussstopfen im Schnitt und Draufsicht,
Fig. 3 und 4 andere Formen von Filteraufsätzen.
Das in Fig. 1 dargestellte Vacuum-Filtrationsgerät besteht aus drei Hauptteilen, nämlich:
a. aus dem Gerätekörper 14, der zur Hauptsache aus Teflon oder Chromstahl besteht. Die Vacuumquelle wird am Rohrende 1 angeschlossen und über den handbetätigten Vacuumschalter 4 links, rechts werden die beiden Vacuumkanäle 6, 7 wahlweise angeschlossen. Der Träger 12 für die Filtermembrane 13 liegt über einem Sammelraum, an den das Abflussrohr 8 für das Filtrat angeschlossen ist. Der Kanal 6 mündet in eine Ringnut 10, der Kanal 7 in einen das Abflussrohr 8 umgebenden Hohlraum 11 im Gerätekörper.
b. aus dem vorzugsweise aus Silicon-Weichgummi bestehenden Anschlussstopfen 15, der einen Stützkörper 16 aus Kunststoff enthält.
Dieser Stopfen 15 wird mit seiner Ringnut 17 über den Ringwulst 9 des konischen Gerätekörperansatzes gestülpt.
c. dem Filteroberteil mit Einfüllstutzen 22 und einem sich über den Umfang erstreckenden als Tauchkolben wirkenden Zylinderring 19, der luftdicht in den Ringraum 10 eingreift. Das obere Ende des Einfüllstutzens 22 ist als Luerlock-Anschluss ausgebildet. Weitere Varianten des Filteroberteils sind in Fig. 3 und 4 dargestellt.
Nachfolgend wird die Funktion des Filtriergerätes erläutert, Fig. 1.
Das am Anschlussrohr 1 über den Schalter 4 rechts und den Kanal 7 im Hohlraum 11 wirksame Vacuum, zieht das Sammelgefäss 23 dicht an die sphärische Aussenfläche des abnehmbaren Dichtungsstopfens 15, so dass die Strömung durch das Rohr 8 direkt auf die über dem Membranträger 12 liegende Filtermembrane 13 wirkt.
Die ringförmige Nut 10 des Gerätekörpers 14 ist über den Schalter 4 links und dem Kanal 6 mit Vacuumquelle verbunden, so dass der Tauchkol ben 19 des Filteroberteils 20, 21, 22 in die Nut 10 eingesaugt wird. Damit wird ein genügend grosser Druck durch den Andruckring 21 auf die Filtermembrane ausgeübt, um sie festzuhalten. Die zu filtrierende Flüssigkeit wird durch den Anschlussstutzen 22 mittels einer Spritze oder eines Schlauches eingeführt. Bei dem in Fig. 3 dargestellten Filteroberteil 24 kann die filtrierende Flüssigkeit direkt zugeführt werden, aber auch Vorfiltration bzw. Entsalzung mittels ionenaktiven Substanzen ist möglich.
Beim Oberteil nach Fig. 4 wird ein Einfülltrichter 25 mit konischem Filterträger 26 verwendet, der für Vorfiltration mit einem gefalteten Filterpapier eignet.
Durch die Lüftungsöffnungen 20 wird das unerwünschte Einsaugen der Filtrationsflüssigkeit in die Ringnut 10 verhindert.
Mittels eines Schlauches, der mit dem Luerlock- Anschluss mit Stutzen 22 verbunden ist, wird das Gerät zum Transferieren, Sammeln und Vermischen von Flüssigkeiten befähigt.
The invention relates to a vacuum filtration device which enables the use of a wide variety of fall arresters and filter attachments.
In the previously known vacuum filtration devices, which allow both the filtrate and the residue to be collected, either a screw cap with a sealing ring or the two parts are connected by means of a clamp for connecting the filter vessel to the device body and holding the filter membrane.
The connection procedure is usually time-consuming, the fixation of the membrane is rather uncertain. A connection to collecting vessels of different sizes is generally not possible, since either the vessel is directly connected to the device body or it is closed with a pin that fits into the opening of the vacuum vessel.
The object of the invention is to create a vacuum filtration device which, on the one hand, allows the filter attachment and the collecting vessel for the filtrate to be fixed on the device body without mechanical manipulations. Furthermore, it should be possible to use very different filter attachments and collecting vessels according to type and size.
The essential features of the subject matter of the invention emerge from patent claim 1.
Exemplary embodiments of the invention are explained in more detail below with reference to the drawing, in which:
1 the filtration device as a whole, in section,
1a the device body in section and top view,
2 the multi-purpose connector plug in section and top view,
3 and 4 other forms of filter attachments.
The vacuum filtration device shown in Fig. 1 consists of three main parts, namely:
a. from the device body 14, which mainly consists of Teflon or chrome steel. The vacuum source is connected to pipe end 1 and the two vacuum channels 6, 7 are optionally connected via the manually operated vacuum switch 4 on the left and right. The carrier 12 for the filter membrane 13 lies above a collecting space to which the drain pipe 8 for the filtrate is connected. The channel 6 opens into an annular groove 10, the channel 7 in a cavity 11 surrounding the drain pipe 8 in the device body.
b. from the preferably made of soft silicone rubber connector plug 15, which contains a support body 16 made of plastic.
This plug 15 is put with its annular groove 17 over the annular bead 9 of the conical device body approach.
c. the filter upper part with filler neck 22 and a cylinder ring 19 which extends over the circumference and acts as a plunger and which engages in the annular space 10 in an airtight manner. The upper end of the filler neck 22 is designed as a Luer lock connection. Further variants of the filter upper part are shown in FIGS. 3 and 4.
The function of the filter device is explained below, FIG. 1.
The vacuum acting on the connecting pipe 1 via the switch 4 on the right and the channel 7 in the cavity 11 pulls the collecting vessel 23 close to the spherical outer surface of the removable sealing plug 15, so that the flow through the pipe 8 directly onto the filter membrane lying above the membrane carrier 12 13 acts.
The annular groove 10 of the device body 14 is connected via the switch 4 on the left and the channel 6 with the vacuum source, so that the plunger 19 of the filter upper part 20, 21, 22 is sucked into the groove 10. A sufficiently large pressure is thus exerted on the filter membrane by the pressure ring 21 in order to hold it in place. The liquid to be filtered is introduced through the connection piece 22 by means of a syringe or a hose. In the filter upper part 24 shown in FIG. 3, the filtering liquid can be supplied directly, but pre-filtration or desalination using ion-active substances is also possible.
4, a funnel 25 with a conical filter support 26 is used, which is suitable for pre-filtration with a folded filter paper.
The ventilation openings 20 prevent the undesirable suction of the filtration liquid into the annular groove 10.
The device is enabled to transfer, collect and mix liquids by means of a hose which is connected to the Luer lock connection with socket 22.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2921/90A CH681861A5 (en) | 1990-09-10 | 1990-09-10 | Vacuum filtration appts. - is connected to mechanical valve by two channel from main body chambers and has elastic plug seal under main body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2921/90A CH681861A5 (en) | 1990-09-10 | 1990-09-10 | Vacuum filtration appts. - is connected to mechanical valve by two channel from main body chambers and has elastic plug seal under main body |
Publications (1)
Publication Number | Publication Date |
---|---|
CH681861A5 true CH681861A5 (en) | 1993-06-15 |
Family
ID=4244615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH2921/90A CH681861A5 (en) | 1990-09-10 | 1990-09-10 | Vacuum filtration appts. - is connected to mechanical valve by two channel from main body chambers and has elastic plug seal under main body |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH681861A5 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995004585A1 (en) * | 1993-08-09 | 1995-02-16 | Zuk, Incorporated | Vacuum filtration device |
WO2004071629A1 (en) * | 2003-02-12 | 2004-08-26 | Millipore Corporation | Vacuum filtration device |
-
1990
- 1990-09-10 CH CH2921/90A patent/CH681861A5/en not_active IP Right Cessation
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995004585A1 (en) * | 1993-08-09 | 1995-02-16 | Zuk, Incorporated | Vacuum filtration device |
WO2004071629A1 (en) * | 2003-02-12 | 2004-08-26 | Millipore Corporation | Vacuum filtration device |
GB2412886A (en) * | 2003-02-12 | 2005-10-12 | Millipore Corp | Vacuum filtration device |
GB2412886B (en) * | 2003-02-12 | 2006-07-05 | Millipore Corp | Vacuum filtration device |
US7806274B2 (en) | 2003-02-12 | 2010-10-05 | Millipore Corporation | Vacuum filtration device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |