DE2546263A1 - Prim. flotation appts. for belt filter with paper belt - has vacuum pump for spreading suspension over belt surface - Google Patents
Prim. flotation appts. for belt filter with paper belt - has vacuum pump for spreading suspension over belt surfaceInfo
- Publication number
- DE2546263A1 DE2546263A1 DE19752546263 DE2546263A DE2546263A1 DE 2546263 A1 DE2546263 A1 DE 2546263A1 DE 19752546263 DE19752546263 DE 19752546263 DE 2546263 A DE2546263 A DE 2546263A DE 2546263 A1 DE2546263 A1 DE 2546263A1
- Authority
- DE
- Germany
- Prior art keywords
- filter
- belt
- vacuum pump
- paper
- appts
- 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.)
- Withdrawn
Links
- 239000000725 suspension Substances 0.000 title description 2
- 238000005188 flotation Methods 0.000 title 1
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000000706 filtrate Substances 0.000 claims abstract description 4
- 239000006194 liquid suspension Substances 0.000 claims abstract 4
- 238000005352 clarification Methods 0.000 claims abstract 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
-
- 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
- B01D29/09—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 filtering bands, e.g. movable between filtering operations
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
Description
VORANSCHEÆ} ORRICHTUNG EINES EANDFILTERS PREVIEWÆ} ORIENTATION OF AN EAND FILTER
Die Erfindung betrifft eine Voranschwemm-Vorrichtung in Zusartrnehang mit einem selbstansaugenden, absatzweise arbeitenden Vakuumfilter.The invention relates to a precoating device in Zusartrnehang with a self-priming, intermittent vacuum filter.
Das Voranschwemmverfahren in der Filtertechnik kann als eine Vorbelagsbildung auf einem oder mehreren Filterelementen beschrieben werden.The precoating process in filter technology can be seen as a precoat formation be described on one or more filter elements.
Dieser Vorbelag dient als eigentliches primäres Filtermedium. Das Filterelement selbst dient normalerweise nur als Träger für die Filterhilfsmittelschicht. Die Elemente sind normalerweisesmit einer relativ groben, siebähnlichen Oberfläche ausgestattet. Dies gewährleistet eine gründliche Säuberung des Filters nach der Filtration. Zur Vorbelagsbildung verwendet man normalerweise ein Anschwemmgefäss mit sauberer Flüssigkeit, in dem das Filterhilfsmittel suspendiert ist. Diese Aufschlämmung pumpt man im Kreislauf durch das Filter und zuruck in das Anschwemmgefäss, bis das suspendierte Filterhilfsmittel restlos und gleichmässig auf die Elemente aufgetragen ist.This pre-coating serves as the actual primary filter medium. That The filter element itself normally only serves as a carrier for the filter aid layer. The elements are usually with a relatively coarse, screen-like surface fitted. This ensures a thorough cleaning of the filter after the Filtration. A precoat is normally used to form a deposit with clean liquid in which the filter aid is suspended. This slurry you pump in a circuit through the filter and back into the precoat until the suspended filter aids completely and evenly applied to the elements is.
Dieser Art von Anschwemmverfahren ist verhältnissmässig zeitraubend, aufwendig und unzuverlässig.This type of precoating process is relatively time consuming, expensive and unreliable.
Zweck der vorleigenden Erfindung ist es, ein einfaches, zuverlässiges und wenig aufwendiges System zu schaffen. Das System (Fig. 1) besteht im wesentlichen aus einem Papierbandfilter (1), Arischwengefäss (2), Anschwemmdosierungsgefäss (3), Dosierungsventile (4 und 5), Trübegefäss (7), Ent- und Belüftnngsleitung (6) und Trübeeinfuhrventil (8).The purpose of the present invention is to provide a simple, reliable and to create an inexpensive system. The system (Fig. 1) consists essentially from a paper band filter (1), Arischwen container (2), precoat dosing container (3), Dosing valves (4 and 5), sludge vessel (7), venting and ventilation line (6) and Slurry inlet valve (8).
Das System funktioniert folgendermassen: Die Papierrolle (9) führt einen sauberen Bandabschnitt auf die Filterplatte (11). Mittels des Druckzylinders (12) wird der Filterdeckel (10) auf das saubere Filterband gedrückt und das Filter abgedichtet. Die Vakuupumpe (13) schaltet sich ein und gleichzeitig öffnet sich das Ventil (4). Nach festgesetzter Zeit, während der das Anscnwsccdosiergefäss (3) mit suspendiertem Filterhilfsmittel gefüllt wird, öffnet sich das Ventil (5) und schliesst sich das Ventil (4).The system works as follows: The paper roll (9) guides a clean section of tape on the filter plate (11). By means of the pressure cylinder (12) the filter cover (10) is pressed onto the clean filter belt and the filter sealed. The vacuum pump (13) switches on and opens at the same time the valve (4). After a set time, during which the contact dosing vessel (3) with suspended filter aid is filled, that opens Valve (5) and the valve (4) closes.
Der Inhalt vom Gefäss (3) wird dadurch in die Rohrleitung (14) gesaugt.The contents of the vessel (3) are sucked into the pipeline (14).
Nach einer entsprechenden Zeit schliesst sich Ventil (5) und gleichzeitig öffnet sich Ventil (8). Wenn die Ventilbetätigung zeitlich richtig abgestimmt ist, wird eine dünne Schicht von Filterhilfsmittelsuspension über die ganze abgedichtete Papierbandoberfläche (15) verteilt. Diese Schicht dient als eigentliches primäres Filtermedium für die nachfliessende Trübe. Wbnn die Papier- und Filterhilfsmittel-Qualität richtig aufeinander abgestimmt sind, wird eine sofortige Klärwirkung erzielt.After a corresponding time, valve (5) closes and at the same time valve (8) opens. If the valve actuation is correctly timed, a thin layer of filter aid suspension is sealed over the whole Paper tape surface (15) distributed. This layer serves as the actual primary Filter medium for the subsequent turbidity. Wbnn the paper and filter aid quality are properly coordinated, an immediate clarifying effect is achieved.
Das Filtrat wird durch das Filterband gesaugt und unter Druck zu dem gewünschten Auffangsort befördert.The filtrate is sucked through the filter belt and under pressure to the the desired collection point.
Nach der Filtration wird das Belüftungsventil (16) automatisch geöffnet.After the filtration, the ventilation valve (16) opens automatically.
Dadurch wird der Unterdruck in der Filterkammer unterbrochen und ai#tosphärische Luft durch Filterkuchen und Filterband hindurchgesaugt. Der Filterdeckel (17) wird dann angehoben.This interrupts the negative pressure in the filter chamber and becomes ai # tospherical Air sucked through the filter cake and filter belt. The filter cover (17) will then raised.
Der Austragungsmotor (1<3) wird eingeschaltet und die Abzugsrollen (20) führen das Filterband langsam aus der Filterkammer heraus. Der Filterkuchen wird durch den Abschaber (19) von dem Filterband abgehoben.The discharge motor (1 <3) is switched on and the take-off rollers (20) slowly guide the filter belt out of the filter chamber. The filter cake is lifted off the filter belt by the scraper (19).
Der Arbeitszyklus wird dann automatisch wiederholt.The work cycle is then repeated automatically.
L e e r s e i t eL e r s e i t e
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752546263 DE2546263A1 (en) | 1975-10-16 | 1975-10-16 | Prim. flotation appts. for belt filter with paper belt - has vacuum pump for spreading suspension over belt surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752546263 DE2546263A1 (en) | 1975-10-16 | 1975-10-16 | Prim. flotation appts. for belt filter with paper belt - has vacuum pump for spreading suspension over belt surface |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2546263A1 true DE2546263A1 (en) | 1977-04-28 |
Family
ID=5959238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19752546263 Withdrawn DE2546263A1 (en) | 1975-10-16 | 1975-10-16 | Prim. flotation appts. for belt filter with paper belt - has vacuum pump for spreading suspension over belt surface |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2546263A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3329945A1 (en) * | 1983-08-19 | 1985-02-28 | Axel 7500 Karlsruhe Rathjen | Fluid guiding device for processing machines having a circulating processing chamber |
WO1993000146A1 (en) * | 1991-06-25 | 1993-01-07 | Thomas Handtmann | Process and device for filtering liquids |
-
1975
- 1975-10-16 DE DE19752546263 patent/DE2546263A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3329945A1 (en) * | 1983-08-19 | 1985-02-28 | Axel 7500 Karlsruhe Rathjen | Fluid guiding device for processing machines having a circulating processing chamber |
WO1993000146A1 (en) * | 1991-06-25 | 1993-01-07 | Thomas Handtmann | Process and device for filtering liquids |
US5445745A (en) * | 1991-06-25 | 1995-08-29 | Handtmann; Thomas | Filtering method for filtering liquids |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |