DE3820206C1 - Process for monitoring of automatically operated plate filter presses - Google Patents

Process for monitoring of automatically operated plate filter presses

Info

Publication number
DE3820206C1
DE3820206C1 DE3820206A DE3820206A DE3820206C1 DE 3820206 C1 DE3820206 C1 DE 3820206C1 DE 3820206 A DE3820206 A DE 3820206A DE 3820206 A DE3820206 A DE 3820206A DE 3820206 C1 DE3820206 C1 DE 3820206C1
Authority
DE
Germany
Prior art keywords
transport
filter
filter cake
plate
time grid
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
Application number
DE3820206A
Other languages
German (de)
Inventor
Oswald Dr.-Ing. 6209 Aarbergen De Busse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BUSSE, OSWALD, DR.-ING., 6209 AARBERGEN, DE
Original Assignee
Passavant Werke AG and Co KG
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 Passavant Werke AG and Co KG filed Critical Passavant Werke AG and Co KG
Priority to DE3820206A priority Critical patent/DE3820206C1/en
Application granted granted Critical
Publication of DE3820206C1 publication Critical patent/DE3820206C1/en
Expired legal-status Critical Current

Links

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
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/003—Filters formed by clamping together several filtering elements or parts of such elements integrally combined with devices for controlling the filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/172—Plate spreading means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32—Removal of the filter cakes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Control Of Conveyors (AREA)

Abstract

Operatives have previously monitored the operation of the filter press and only intervened if the filter cake is not correctly discharged or transport of the filter plate is disturbed. According to the invention, the operatives' workload can be reduced by furnishing the filter press with a transit control mounted beneath the filter plates and a time scanner corresponding to the opening cycle of the filter plates. If the transit control does not receive a pulse within the time scan, an alarm is triggered and/or the transport mechanism is stopped. Furthermore, the transit control is made dependent on the transport verification. The transport verification can also receive a time scanner which triggers an alarm and/or terminates the transport if the transport fails.

Description

Die Erfindung bezieht sich auf ein Verfahren gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a method according to the preamble of patent claim 1.

Als Stand der Technik, von dem ausgegangen wurde, wird die DE-PS 34 08 140 genannt. Dort werden genau (in Spalte 3, Zeilen 21 bis 32) die Probleme geschildert, die mit der vorliegenden Erfindung gelöst werden sollen. Der Filterkuchen löst sich beim automatischen Auseinanderschieben der Platten gar nicht oder nur unvollständig. Die Bedienungsperson muß manuell eingreifen, ist dann aber der Gefahr des Zusammenschiebens der nächsten Platte ausgesetzt. Bei der Presse nach dem Stand der Technik soll diese Gefahr dadurch beseitigt werden, daß dem Plattentransporteur eine Schubkraft zugeführt wird, die zum Verschieben gerade noch ausreicht. Bei Auftreten des geringsten Widerstands, z. B. durch eine dazwischengreifende Hand, wird die Platte sofort zum Stillstand gebracht (Spalte 4, Zeilen 26 bis 29). Dadurch soll eine Quetschgefahr verhindert werden. Es ist äußerst zweifelhaft, ob der gewünschte Zweck durch eine solche Steuerung erreicht wird. Die Filterplatten haben nämlich auf Grund ihrer Größe und ihres Gewichts eine erhebliche Trägheit. Selbst das sofortige Anhalten des Verschiebeantriebs würde zu einer erheblichen Kraftausübung auf die eingeklemmte Hand und damit zu ernsthaften Verletzungen führen. Ein so starkes Verlangsamen der Verschiebebewegungen, daß praktisch keine Trägheitskraft mehr auftritt, ist in der Praxis wegen der damit verbundenen Verlängerung der Entleerungszeit nicht durchführbar.As the state of the art of was assumed, the DE-PS 34 08 140 is called. There the problems are exactly (in column 3, lines 21 to 32) described, which are solved with the present invention should. The filter cake loosens during the automatic The plates are not pushed apart or only incompletely. The operator must intervene manually, but is then the Danger of the next plate being pushed together. At the press according to the prior art is supposed to do this be eliminated that the plate conveyor a thrust is fed, which is just enough to move. At Least resistance occurs, e.g. B. by a hand in between, the plate immediately stops brought (column 4, lines 26 to 29). This is supposed to Risk of being crushed. It is extremely doubtful whether the desired purpose is achieved by such a control. The filter plates have because of their size and their Weight a significant sluggishness. Even the immediate stop of the sliding drive would result in a considerable exertion of force on the pinched hand and thus serious injuries to lead. Such a slowdown in the displacement movements that practically no more inertia occurs in practice because of the associated extension of the emptying time not feasible.

Bei der DE-OS 20 02 170 kommt es darauf an, das Schieflaufen der Platten zu verhindern. Dies wird durch eine auf mindestens einer Seite der Filterelemente angeordnete, die Verschiebung anzeigende Sicherungseinrichtung erreicht, z. B. in Form eines Lichtstrahls.In DE-OS 20 02 170 it is important to prevent the plates from skewing. This is done by a arranged on at least one side of the filter elements, the Safety device indicating displacement reached, e.g. B. in Shape of a beam of light.

Bei der Presse nach der DE-OS 27 00 344 geht es darum, die Vibrationseinrichtung 1 durch Kontakte in die Stellung zu bringen, in der sie die frei hängende mittlere Platte zwecks Abwurfs des Filterkuchens richtig beaufschlagen kann.The press according to DE-OS 27 00 344 is about bringing the vibrating device 1 through contacts into the position in which it can properly apply the free-hanging middle plate for the purpose of dropping the filter cake.

Es bestand die Aufgabe, das Bedienungspersonal zu entlasten und für andere wichtigere Tätigkeiten freizustellen.It the task was to relieve the operating personnel and free for other more important activities.

Diese Aufgabe wird dadurch gelöst, daß der Filterkuchenabwurf durch eine unterhalb der Filterplatten vorgesehene Durchgangskontrolle erfaßt und mit einem dem Öffnungsrhythmus entsprechenden Zeitraster verglichen wird, und daß bei Ausbleiben eines Filterkuchens oder Filterkuchenteils innerhalb des Zeitrasters eine Störmeldung gegeben und/oder der Transportmechanismus stillgesetzt wird.This task is solved in that the Filter cake ejected through one below the filter plates intended passage control detected and with a Opening rhythm is compared corresponding time grid, and that in the absence of a filter cake or Filter cake part an error message within the time grid given and / or the transport mechanism is stopped.

Als Impulsgeber der Durchgangskontrolle kommt eine Lichtschranke oder ein Ultraschallgeber in Frage. Beträgt z. B. der Öffnungstakt 4 sec., so wird ein Zeitraster von beispielsweise 2 sec. gelegt, das jeweils mit oder kurz vor dem Erfassen einer neuen Platte beginnt. Fällt der Filterkuchen nicht innerhalb dieser 2 sec., dann gibt die Durchgangskontrolle einen entsprechenden Impuls für den Alarm und das Stillsetzen des Transportmechanismus. Die Bedienungsperson kann den Filterkuchen manuell lösen und danach den automatischen Betrieb wieder einschalten, nachdem sie den Alarm quittiert hat. Steuerungstechnisch ist es sinnvoll, das Zeitraster derart mit dem Transportmechanismus zu koppeln, daß nur bei tatsächlich erfolgtem Transport das Zeitrelais für die Durchgangskontrolle aktiviert wird. Auf diese Weise wird auch der Fall erfaßt, in dem es gar nicht zum Plattentransport kommt oder der Plattentransport unvollständig abläuft, so daß der Filterkuchen nicht herausfallen kann. Als Impulsgabe kann die beim Erfassen der Filterplatte aufzubringende Beschleunigungskraft genommen werden. Bei Ausbleiben der Transportbestätigung innerhalb des vorgegebenen Zeitrasters wird ebenfalls Alarm ausgelöst, der erst quittiert werden kann, wenn die Störung behoben und der Kuchen einwandfrei abgeworfen ist.One comes as a pulse generator for the continuity control Photoelectric sensor or an ultrasound transmitter in question. For example, B. the opening cycle 4 sec., Then a time grid of 2 seconds, for example, each with or shortly before starts capturing a new plate. Does the fall Filter cake not within this 2 sec., Then the Continuity control a corresponding impulse for the alarm  and stopping the transport mechanism. The Operator can manually remove the filter cake and then switch on the automatic mode again after she has acknowledged the alarm. In terms of control technology, it is sensible, the time grid with the transport mechanism to couple that only when the transport has actually taken place Time relay for the continuity control is activated. On in this way the case is also recorded in which it is not at all Plate transport is coming or the plate transport is incomplete expires so that the filter cake cannot fall out. As The impulse can occur when the filter plate is grasped acceleration force to be applied. At Failure to receive the transport confirmation within the specified Time grid also triggers an alarm that only acknowledges can be fixed when the fault and the cake is dropped perfectly.

Claims (5)

1. Verfahren zur Überwachung von automatisch betriebenen, insbesondere entleerten Plattenfilterpressen, bei denen ein Plattentransportmechanismus die Filterplatten im vornehmlich gleichbleibenden Zeittakt in die Öffnungs- bzw. Entleerstellung verschiebt, wodurch der Filterkuchen selbsttätig abfällt, dadurch gekennzeichnet, daß der Filterkuchenabwurf durch eine unterhalb der Filterplatten vorgesehene Durchgangskontrolle erfaßt und mit einem dem Öffnungsrhythmus entsprechenden Zeitraster verglichen wird, und daß bei Ausbleiben eines Filterkuchens oder Filterkuchenteils innerhalb des Zeitrasters eine Störmeldung gegeben und/oder der Transportmechanismus stillgesetzt wird. 1. A method for monitoring automatically operated, in particular emptied plate filter presses, in which a plate transport mechanism moves the filter plates into the opening or emptying position in the essentially constant time cycle, as a result of which the filter cake falls off automatically, characterized in that the filter cake ejection is provided by one provided below the filter plates Passage control is detected and compared with a time grid corresponding to the opening rhythm, and that if a filter cake or filter cake part does not appear within the time grid, an error message is given and / or the transport mechanism is stopped. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Zeitraster in der Weise vom Transportmechanismus abhängig gemacht wird, daß nur bei tatsächlich erfolgtem Plattentransport das Zeitrelais für die Durchgangskontrolle aktiviert wird.2. The method according to claim 1, characterized characterized that the time grid in the Way is made dependent on the transport mechanism that only if the plate has actually been transported Time relay for the continuity control is activated. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß auch dem Plattentransport ein Zeitraster unterlegt und bei Ausbleiben der Transportbestätigung innerhalb des Zeitrasters Alarm ausgelöst wird.3. The method according to claim 2, characterized characterized that also the plate transport a time grid is highlighted and in the absence of Transport confirmation within the alarm time grid is triggered. 4. Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß als Transportbestätigung die beim Transport am Transportmechanismus auftretende Beschleunigungskraft genommen wird.4. The method according to claim 2 or 3, characterized characterized that as a transport confirmation the one that occurs on the transport mechanism during transport Acceleration force is taken. 5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Durchgangskontrolle eine Lichtschranke oder ein Ultraschallgeber benutzt wird.5. The method according to claim 1, characterized characterized that as a passage control a light barrier or an ultrasonic transmitter is used.
DE3820206A 1988-06-14 1988-06-14 Process for monitoring of automatically operated plate filter presses Expired DE3820206C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3820206A DE3820206C1 (en) 1988-06-14 1988-06-14 Process for monitoring of automatically operated plate filter presses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3820206A DE3820206C1 (en) 1988-06-14 1988-06-14 Process for monitoring of automatically operated plate filter presses

Publications (1)

Publication Number Publication Date
DE3820206C1 true DE3820206C1 (en) 1989-08-10

Family

ID=6356510

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3820206A Expired DE3820206C1 (en) 1988-06-14 1988-06-14 Process for monitoring of automatically operated plate filter presses

Country Status (1)

Country Link
DE (1) DE3820206C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2983083A1 (en) * 2011-11-25 2013-05-31 Faure Equipements Method for cleaning filtering plate of filter press, involves arranging filter fabric in filter press, equipping filter press with washing unit, and washing filter fabric according to measured parameter related to clogging of fabric
CN110917682A (en) * 2020-02-20 2020-03-27 天津美腾科技股份有限公司 Pressure filter monitoring device of unloading

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2002170A1 (en) * 1970-01-19 1971-08-12 Kurita Ken I Preventing skewing of filter press plates - and chassis
DE2700344A1 (en) * 1976-01-07 1977-07-14 Ngk Insulators Ltd METHOD OF POSITIONING A FILTER CAKE DISPENSER FOR A FILTER PRESS
DE3408140A1 (en) * 1984-03-06 1985-09-19 Karl 8594 Arzberg Häcker Process for controlling the slide drive for the filter plates of a chamber filter press and apparatus for carrying out the process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2002170A1 (en) * 1970-01-19 1971-08-12 Kurita Ken I Preventing skewing of filter press plates - and chassis
DE2700344A1 (en) * 1976-01-07 1977-07-14 Ngk Insulators Ltd METHOD OF POSITIONING A FILTER CAKE DISPENSER FOR A FILTER PRESS
DE3408140A1 (en) * 1984-03-06 1985-09-19 Karl 8594 Arzberg Häcker Process for controlling the slide drive for the filter plates of a chamber filter press and apparatus for carrying out the process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2983083A1 (en) * 2011-11-25 2013-05-31 Faure Equipements Method for cleaning filtering plate of filter press, involves arranging filter fabric in filter press, equipping filter press with washing unit, and washing filter fabric according to measured parameter related to clogging of fabric
CN110917682A (en) * 2020-02-20 2020-03-27 天津美腾科技股份有限公司 Pressure filter monitoring device of unloading

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: BUSSE, OSWALD, DR.-ING., 6209 AARBERGEN, DE

8339 Ceased/non-payment of the annual fee