DE647621C - Device for removing the filter cake - Google Patents
Device for removing the filter cakeInfo
- Publication number
- DE647621C DE647621C DEW96861D DEW0096861D DE647621C DE 647621 C DE647621 C DE 647621C DE W96861 D DEW96861 D DE W96861D DE W0096861 D DEW0096861 D DE W0096861D DE 647621 C DE647621 C DE 647621C
- Authority
- DE
- Germany
- Prior art keywords
- roller
- cake
- wire
- filter
- cutting wire
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/465—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element take-off rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
- B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
- B01D33/64—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression
- B01D33/646—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression by pressure rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/28—Position of the filtering element
- B01D2201/282—Filtering elements with a horizontal rotation or symmetry axis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Meat And Fish (AREA)
Description
Vorrichtung zur Abnahme des Filterkuchens Es sind bereits Drähte als Abnahmeschaber oder -messer für die Filterrückstände auf Zellentrommeldrehfiltern bekannt. Durch die Drähte wird der Filterkuchen unmittelbar von der Filterfläche der Drehtrommel abgeschabt. Die restlose Abnahme mit einem Draht ist bei keinem» Filtergut möglich. Bei körnigem Filtergut ist das von geringerer Bedeutung, da die auf dem Filtertuch verbleibende Schicht durchlässig ist. Bei der Filterung von Suspensionen, die einen plastischen Filterkuchen ergeben, ist @es notwendig, den Kuchen bei jeder Umdrehung restlos vom Filtertuch zu entfernen, da sich andernfalls das Filtertuch verstopft, wodurch die Leistung des Filters sehr schnell fällt. Bei der Abnahme des plastischen Kuchens mit der Vorrichtung nach Patent 632 ¢22 wird der Kuchen restlos vorn Filter auf die Abnahmewalze übertragen. Schwierigkeiten bereitet lediglich die Entfernung des plastischen Kuchens aus dem Innern der gelochten Abnahmewalze.Device for removing the filter cake Wires are already known as removal scrapers or knives for the filter residues on rotary cell drum filters. The filter cake is scraped off directly from the filter surface of the rotating drum by the wires. Complete removal with a wire is not possible for any » filter material. In the case of granular filter material, this is of less importance, since the layer remaining on the filter cloth is permeable. When filtering suspensions that produce a plastic filter cake, it is necessary to remove the cake completely from the filter cloth with each rotation, otherwise the filter cloth will become clogged and the filter's performance will drop very quickly. When removing the plastic cake with the device according to patent 632 [22], the cake is completely transferred from the filter to the take-off roller. The only difficulty is the removal of the plastic cake from the interior of the perforated take-off roller.
Gegenstand der Erfindung ist eine weitere Ausbildung der Abnahmewalze nach Patent 632 422 in Gestalt einer Zusatzeinrichtung, die aus einem gespannten Draht besteht, der mit der gelochten Walze zusammenarbeitet und zum Abschneiden des auf der Innenwand der Abnahmewalze befindlichen Filterkuchens als Ersatz für die Fördervorrichtung im Innern der hohlen Walze dient.The invention relates to a further embodiment of the take-off roller according to patent 632 422 in the form of an additional device, which consists of a tensioned There is wire that cooperates with the perforated roller and is used for cutting of the filter cake located on the inner wall of the take-off roller as a replacement for the conveyor is used inside the hollow roller.
Bei Benutzung der Abnahmevorrichtung nach dem Hauptpatent wird der in das Innere der Walze eingedrungene Kuchen durcheine Räumvorrichtung, z. B. durch Schneckenschaufeln, aus dem Walzeninnern entfernt. Die Schaufeln arbeiten jedoch nicht zuverlässig, weil sie einmal den Kuchen nicht restlos abstreichen und weil andererseits der klebrige Kuchen sich leicht an ihnen festsetzt, so daß sich das Innere der Abnahmewalze teilweise verstopft und die Förderleistung nachläßt.When using the removal device according to the main patent, the cakes which have penetrated the inside of the roller through a clearing device, e.g. B. by Screw blades, removed from the inside of the roller. The blades work, however not reliable, because once they don't scrape the cake completely and because on the other hand, the sticky cake sticks to them easily, so that the The inside of the take-off roller is partially clogged and the delivery rate decreases.
Es hat sich daher als vorteilhaft erwiesen, an Stelle einer Schnecke oder der Schneckenschaufeln einen gespannten Draht zu verwenden. Ein solcher Draht ist für die in Betracht kommenden Abnahmewalzen besonders geeignet, weil er nur sehr wenig Raum innerhalb der Hohlwalze einnimmt und dort Verstopfungen verhütet.It has therefore proven to be advantageous instead of a screw or to use a tensioned wire on the auger blades. Such a wire is particularly suitable for the take-off rollers in question because it is only takes up very little space inside the hollow roller and prevents clogging there.
Der Erfindungsgegenstand ist in Abb. i in Seitenansicht und in Abb.2 im Längsschnitt durch die Abnahmewalze und einen Teil des Filters dargestellt.The subject of the invention is shown in Fig. I in side view and in Fig.2 shown in longitudinal section through the take-off roller and part of the filter.
Um die gelochte Abnahmewalze b hat sich die vom Filter a abgehobene Kuchenschicht k gelegt. Nach Erzeugung dieser Schicht wird der weiter abgenommene Kuchen an der Berührungsstelle zwischen Walze und Filtertrommel durch die Löcher in das Innere der `Valze b gedrückt und bildet dort die Kuchenschicht 1. Etwa im oberen Scheitel der Hohlwalze ist im geringen Abstand vom Mantel ein Draht m gespannt, der die Umdrehungen der Walze nicht mitmacht. Die Walze ist beiderseits offen. Der Draht trennt eine Kuchenschicht ab, das abgeteilte Gut fällt zum Teil ab, zum Teil hängt es als Fladen vom Draht nach unten, bis es unten die vörbeiwandernde Kuchenschicht wieder erreicht und sich dort zu einer Wurst it aufrollt, die sich nach den Seiten streckt und schließlich aus der Walze ins Freie fällt.The one lifted from the filter a has moved around the perforated take-off roller b Cake layer k laid. After this layer has been created, the one that is further removed Cake at the point of contact between the roller and the filter drum by the holes are pressed into the inside of the `Valze b and forms the cake layer there 1. Approximately in the upper apex of the hollow roller is a small distance from the jacket Wire m tensioned, which does not keep up with the revolutions of the roller. The roller is on both sides open minded. The wire separates a layer of cake, some of the separated goods fall off It partly hangs down from the wire as a flatbread, until the wandering past it below Cake layer reached again and there it rolls up into a sausage that is stretches to the sides and finally falls out of the roller into the open.
Zur Unterstützung dieser Förderung des Kuchens nach einer Seite kann man Filter und Walze geringfügig . neigen oder den Schneidedraht derart geneigt anordnen, daß sein Abstand vom Walzenmantel an der Austragsöffnung am kleinsten ist. Diese Bauart ist in der Abb. i dargestellt. Die Neigung des Drahtes kann je nach Art und Menge des Kuchens dadurch geändert werden, daß der Draht beispielsweise an einer Seite in einem Langloch verschiebbar gelagert wird. Der Kuchen 1 erhält dadurch kegelige Gestalt, und die Kuchenwurst rollt ohne Fördervorrichtung beschleunigt aus der Walze. Um die Schneidefähigkeit des Drahtes zu erhöhen, ist es zweckmäßig, ihn in der Spannrichtung in Schwingungen zu versetzen.In support of this you can promote the cake to one side one filter and roller slightly. incline or incline the cutting wire in such a way arrange that its distance from the roll shell at the discharge opening is smallest is. This type of construction is shown in Fig. I. The inclination of the wire can vary can be changed according to the type and amount of cake by making the wire, for example is mounted displaceably on one side in an elongated hole. The cake 1 receives this results in a conical shape, and the cake sausage rolls accelerated without a conveyor device off the roller. In order to increase the cutting ability of the wire, it is advisable to to make it vibrate in the tensioning direction.
In manchen Fällen kann man auf eine besondere Schneid- oder Abtrennvorrichtung aber auch vollständig verzichten, da mancher Kuchen sich bei Nachdringen weiterer Kuchenmassen in das Innere der Walze dort von selbst ablöst und zu einer Wurst formt.In some cases a special cutting or severing device can be used but also do without it completely, as some cakes will turn out to be more Cake mass in the inside of the roller detaches itself there and forms it into a sausage.
Die beschriebenen Abnahmevorrichtungen eignen sich in gleicher Weise sowohl für Saug- oder Druckfilter als auch für Trommel-, Plan- oder Scheibenfilter.The removal devices described are suitable in the same way for suction or pressure filters as well as for drum, plane or disc filters.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEW96861D DE647621C (en) | 1933-05-19 | 1935-07-11 | Device for removing the filter cake |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE638001T | |||
DEW92591D DE632422C (en) | 1933-05-19 | 1933-05-19 | Device for removing the filter cake from rotary cell drum filters |
DEW96861D DE647621C (en) | 1933-05-19 | 1935-07-11 | Device for removing the filter cake |
Publications (1)
Publication Number | Publication Date |
---|---|
DE647621C true DE647621C (en) | 1937-07-08 |
Family
ID=27207231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEW96861D Expired DE647621C (en) | 1933-05-19 | 1935-07-11 | Device for removing the filter cake |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE647621C (en) |
-
1935
- 1935-07-11 DE DEW96861D patent/DE647621C/en not_active Expired
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