CH315572A - Device for filtering liquids - Google Patents
Device for filtering liquidsInfo
- Publication number
- CH315572A CH315572A CH315572DA CH315572A CH 315572 A CH315572 A CH 315572A CH 315572D A CH315572D A CH 315572DA CH 315572 A CH315572 A CH 315572A
- Authority
- CH
- Switzerland
- Prior art keywords
- filter
- arrangement
- openings
- width
- dependent
- Prior art date
Links
- 239000007788 liquid Substances 0.000 title claims description 12
- 238000001914 filtration Methods 0.000 title claims description 4
- 239000002184 metal Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 5
- 229910052573 porcelain Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 6
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 230000001788 irregular Effects 0.000 claims 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- 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
- B01D29/03—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 self-supporting
-
- 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
- B01D29/50—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 multiple filtering elements, characterised by their mutual disposition
- B01D29/56—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 multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—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 multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/30—Filter housing constructions
- B01D2201/309—Housings with transparent parts
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Glass Compositions (AREA)
- Ink Jet (AREA)
Description
Vorrichtung zum Filtern von Flüssigkeiten
Für registrierende Geräte ist es notwen- dig, die zur Registrierung verwendete Flüs- sigkeit zu filtern, einerseits um Staub von der Schreibspitze fern zu halten, anderseits auch, um kristallische Ausseheidungen und sonstige Ablagerungen zurückzuhalten. Es werden besonders hohe Anforderungen an die Reinheit der Flüssigkeit beim sog. Strahlschreiber gestellt. Das ist ein registrierender Oszillograph, bei dem ein haardünner Flüssigkeitsstrahl unter hohem Druek aus einer Düse gegen die Registrierfläche gespritzt wird.
Für solche Geräte werden Filter gefordert, die keine festen Bestandteile in der Flüssigkeit von mehr als 40 Grö#e durch- lassen. Oftmals sind noeh strengere Anforderungen gestellt.
Gegenstand der Erfindung ist nun eine Vorrichtung zum Filtern von Flüssigkeiten, insbesondere für Strahlschreilber zur Reinigung der Sehreibfliissigkeit von festen Be standteilen oberhalb einer vorherbestimmten Grosse, welche dadurch gekennzeiehnet ist, dass ein Filter mit praktiseh gleichmässiger Weite und AnordnungderÖffnungenund ein zweites Filter mit ungleichmässiger Weite und Anordnung der öffnungen hintereinan- der angeoldnet sind.
Die eine Art von Filtern sind z. B. Lamellenfilter oder Masehenfilter. Bei der andern Art von Filtern sehwankt clie Weite der Offnungen in der Regel nach einem sta tistischen Gesetz, z. B. nach einer Maxwell Verteilung, um einen festen Wert. Solche Filter sind z. B. sog. Sinterfilter, die entweder durch das Zusammensintern kleiner Glaskörnehen entstehen, oder Metallsinterfilter, die aus einer gesinterten Aufschüttung eines Metall. pulvers entstehen, oder poröse Platten, PorzeLlanfilter, Lamellenfilter oder auch Maschenfilter sind Filter, bei denen die Öffnungen durch eine fertigungstechnische Gesetzmässigkeit definiert sind und eine definierte Öffnungsweite haben.
Zum Beispiel sind hauchdünne Metallfilter solche Filter.
Beispielsweise wird ein Maschen-oder Lamellenfilt. er, vorzugsweise aus Metall,, einem Filter mit ungleichmässiger Weite und Anordnung der Öffnungen, z. B. einem Sinterkörper oder Porenfilter aus einem. geschmolzenen oder keramisehen. Stoff oder Meta. ll naehgesehaltet. Das Filter mit ungleiehmässi- ger Weite der Öffnungen besteht beispielsweise a. lls Glas, Porzellan oder Kunstharz, Metall oder aus Kombinationen dieser oder aus einem Stoff, der in Schaumform ver festin, worden ist. Wenn dieses Filter, z.
B. ein Glasfilter, durch einen Metalleinbrand lotfähig gemacht ist, ka. nn dieses Filter in eine Metallfassung eingelotet sein.
Das Filter mit gleiehmässiger Weite der Öffnungen kann auch die Struktur eines Stopfens aus einem langfaserigen Stoff, z. B.
Glaswelle oder Gesteinswolle, haben.
Die beschriebene Filteranordnung wird vorzugsweise für Strahlschreiber gebraucht, die wiederum vorzugsweise bei Elektrokardio- graphen oder sonstigen direktschreibenden Oszillographen verwendet werden.
Eine beispielsweise Ausführungsform des Erfindungsgegenstandes ist in der Zeichnung dargestellt. Diese zeigt ein Rohr 1, das in einer Strahldüse 2 endet und gegen eine Re gistrierfläche 3 gerichtet ist.
Der Flüssigkeitsaustritt ist links dureh einen Pfeil angedeutet. Zuerst durehsetzt die Flüssigkeit das Filter mit ungleiehmässiger Weite der Öffnungen 4 und dann das La- mellenfilter 5. Nach Passieren beider Filter befinden sieh in der Flüssigkeit keine festen Bestandteile mehr oberhalb der zulässigen Grö#engrenze. Das Filter 4 ist in das Glasrohr 1 eingelötet. Hierzu ist das Glasrohr an n der Fassstelle durch einen Einbrand lotfähig gemacht.
Die beiden Filter und unter Umstä. nden auch die Kapillare können eine feste nieht mehr zerlegbare Einheit bilden, was mit Bücksicht auf die anzuwendenden hohen Spritzdrucke eine wesentliche Vereinfachung der gesamten Anordnung bedeutet.
Device for filtering liquids
For devices that register, it is necessary to filter the liquid used for registration, on the one hand to keep dust away from the writing tip, and on the other hand to hold back crystalline precipitates and other deposits. There are particularly high demands on the purity of the liquid in the so-called jet recorder. This is a recording oscilloscope in which a hair-thin jet of liquid is sprayed under high pressure from a nozzle against the recording surface.
For such devices, filters are required that do not allow solid components in the liquid of more than 40 size to pass through. Often there are even stricter requirements.
The subject of the invention is a device for filtering liquids, in particular for jet scrapers for cleaning the visual fluid from solid components above a predetermined size, which is characterized in that a filter with a practically uniform width and arrangement of the openings and a second filter with an uneven width and arrangement the openings are gold-plated one behind the other.
One type of filter is e.g. B. lamellar filter or masehenfilter. With the other type of filters, the width of the openings usually varies according to a statistical law, e.g. B. after a Maxwell distribution to a fixed value. Such filters are e.g. B. So-called. Sintered filters, which are created either by sintering together small glass grains, or metal sintered filters, which are made from a sintered pile of metal. powder or porous plates, porcelain filters, lamellar filters or mesh filters are filters in which the openings are defined by a production-related law and have a defined opening width.
For example, wafer-thin metal filters are such filters.
For example, a mesh or lamellar filter is used. he, preferably made of metal ,, a filter with uneven width and arrangement of the openings, z. B. a sintered body or pore filter from a. fused or ceramic. Substance or meta. ll sewn. The filter with uneven width of the openings consists, for example, of a. l as glass, porcelain or synthetic resin, metal or combinations of these or from a substance which has been fixed in foam form. When this filter, e.g.
B. a glass filter, made solderable by a metal fire, ka. nn this filter must be soldered into a metal frame.
The filter with the same width of the openings can also have the structure of a stopper made of a long fibrous material, e.g. B.
Glass wave or rock wool.
The filter arrangement described is preferably used for beam recorders, which in turn are preferably used in electrocardiographs or other direct-writing oscilloscopes.
An example embodiment of the subject matter of the invention is shown in the drawing. This shows a pipe 1 which ends in a jet nozzle 2 and is directed against a registration surface 3.
The liquid outlet is indicated on the left by an arrow. First the liquid penetrates the filter with the uneven width of the openings 4 and then the lamellar filter 5. After passing through both filters, there are no more solid constituents in the liquid above the permissible size limit. The filter 4 is soldered into the glass tube 1. For this purpose, the glass tube is made solderable at the barrel location by a burn-in.
The two filters and under certain circumstances. The capillary can also form a solid unit that cannot be dismantled, which, with regard to the high injection pressures to be used, means a significant simplification of the entire arrangement.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES6054U DE1656152U (en) | 1952-02-26 | 1952-02-26 | DEVICE FOR FILTERING LIQUIDS. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH315572A true CH315572A (en) | 1956-08-31 |
Family
ID=30466108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH315572D CH315572A (en) | 1952-02-26 | 1953-01-23 | Device for filtering liquids |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH315572A (en) |
| DE (1) | DE1656152U (en) |
| FR (1) | FR1071407A (en) |
| IT (1) | IT500163A (en) |
| NL (1) | NL94995C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233156B (en) * | 1964-02-26 | 1967-01-26 | Siemens Ag | Filter for the writing fluid of fluid beam oscillographs |
-
0
- IT IT500163D patent/IT500163A/it unknown
-
1952
- 1952-02-26 DE DES6054U patent/DE1656152U/en not_active Expired
-
1953
- 1953-01-23 CH CH315572D patent/CH315572A/en unknown
- 1953-02-11 NL NL175984A patent/NL94995C/en active
- 1953-02-23 FR FR1071407D patent/FR1071407A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233156B (en) * | 1964-02-26 | 1967-01-26 | Siemens Ag | Filter for the writing fluid of fluid beam oscillographs |
Also Published As
| Publication number | Publication date |
|---|---|
| IT500163A (en) | 1900-01-01 |
| DE1656152U (en) | 1953-05-21 |
| FR1071407A (en) | 1954-08-31 |
| NL94995C (en) | 1960-08-15 |
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