EP0532136B1 - Magnetic separator with chains - Google Patents
Magnetic separator with chains Download PDFInfo
- Publication number
- EP0532136B1 EP0532136B1 EP92250238A EP92250238A EP0532136B1 EP 0532136 B1 EP0532136 B1 EP 0532136B1 EP 92250238 A EP92250238 A EP 92250238A EP 92250238 A EP92250238 A EP 92250238A EP 0532136 B1 EP0532136 B1 EP 0532136B1
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- EP
- European Patent Office
- Prior art keywords
- magnetic filter
- magnetic
- dirt
- chain
- filter bars
- 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 - Lifetime
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/28—Magnetic plugs and dipsticks
- B03C1/284—Magnetic plugs and dipsticks with associated cleaning means, e.g. retractable non-magnetic sleeve
Definitions
- the invention relates to a chain magnetic separator with horizontally arranged magnetic filter rods, which are transported by endlessly rotating conveyor chains or the like at equal intervals and in parallel to each other through the liquid to be cleaned and which pass through a cleaning device above the liquid, in which the magnetic filter rods with the help of straight in their Dirt wipers guided in the longitudinal direction are cleaned, which engage around the magnetic filter rods with recesses shaped according to the profile of the magnetic filter rods.
- a device of the generic type is known from German patent DE-C-24 29 849.
- the dirt wipers are carried by pairs of endless chains. A pair is arranged above and a pair below the magnetic filter rods, the dirt wipers attached to the chains are provided with semicircular recesses, so that a Pair of dirt scrapers can clean the entire surface of a filter rod.
- the magnetic filter rods are moved one cycle at a time, so that two or three magnetic filter rods lying next to one another are coated simultaneously with appropriately long dirt wipers with several semicircular recesses lying next to one another. In this way, each magnetic rod is stripped several times before it is immersed again in the liquid to be cleaned.
- the dirt removed from the magnetic filter rods with the aid of the dirt wipers is prevented from falling back into the liquid by a discharge device arranged below the cleaning device.
- the known chain magnetic separator with the rotating chains carrying the dirt wipers is mechanically very complex, the device is subject to high wear and tear because the stripped sludge falls on the lower chains and is maintenance-intensive.
- the space requirement is also very high due to the chains, the required deflection devices and the drive kinematics. In order to achieve an exact wiping of the magnetic filter rods, a high adjustment accuracy is necessary.
- the object of the present invention is, based on the prior art described above, to provide a chain magnetic separator with a cleaning device which is not substantially larger than the container holding the liquid to be cleaned and which is simple and robust in terms of mechanics, and with commercially available components is to be created.
- the dirt wipers above the magnetic filter rods are arranged on a slide which is part of a linear cylinder, preferably a rodless cylinder, and that the slide and / or the cylinder can be raised and lowered vertically on the frame of the chain magnetic separator relative to the magnetic filter rods is arranged.
- the replacement of the complex chain pairs for driving the dirt wipers with linear cylinders enables the use of a commercially available component that also replaces the previous drive in an extremely space-saving manner with little mechanics.
- the arrangement of the dirt wipers on the slide moved by the linear cylinder in particular a rodless cylinder, enables the dirt wipers to be lifted by vertical movement of the slide and / or the cylinder. In the raised state, the conveyor chain can be moved one cycle before the dirt wipers are lowered into the working position with the carriage and / or the cylinder.
- the carriage and / or the cylinder are raised and lowered by vertical lifting cylinders being articulated on both sides of the linear cylinder.
- lifting cylinders which are operated in synchronism, the entire device is lifted and brought out of the rotating area of the rotating magnetic filter rods.
- the dirt wipers can be moved from a rest position above the magnetic filter rods into the wiping position in which each dirt wiper engages around the entire circumference of a magnetic filter rod, the recesses of the dirt wipers with radial, the magnetic filter rods facing, in the longitudinal direction extending slots are provided, which can be spread apart when the dirt wipers on the lateral surface of the reduced diameter magnetic filter rods in the end region by means of bevels diverging to the slots.
- the use of vertically divided scraper elements enables the dirt scraper to be designed in a simple manner, for example from an elastic material such as Vulkolan or the like. Such a material enables the dirt wipers to “latch” into the magnetic filter rods, preferably at the end of the magnetic filter rods, which has a smaller diameter than the magnetic part of the rods.
- the dirt wipers used in this way are simple to manufacture, inexpensive to purchase and are easily centered on the magnetic filter rods.
- the dirt wipers can be moved from a rest position above the magnetic filter rods in the working position between two adjacent magnetic filter rods, the dirt wipers being arranged on the slide and pivoting about a vertical central axis by 90 degrees with diametrically opposed plates that are open to the outside there are semicircular recesses which each encompass half a magnetic filter rod profile in a swivel position (stripping position).
- 1 denotes the container into which the liquid to be cleaned of magnetic particles is introduced at 2.
- a distributor plate 3 is arranged, which is provided with holes for the cleaned liquid.
- the conveyor chain 4 is guided around the U-shaped curved distributor plate and can be moved in cycles via a chain wheel with an intermittently loaded piston-cylinder drive 6.
- the conveyor chain 4 consists of two spaced-apart chain hoists, which carry the magnetic bars 5 between them and guide them in cycles through the liquid in the container 1. During the movement of the magnetic rods 5 through the liquid, magnetic and also non-magnetic dirt settles on the magnetic filter rods 5, which must be removed from the magnetic filter rods after each complete circulation of the conveyor chain 4 by the liquid.
- the cleaning device 7 to be described later is arranged above the conveyor chain 4 and the magnetic filter rods 5, with the aid of which the magnetic filter rods are freed from dirt.
- the dirt removed from the magnetic filter rods falls into the discharge trough 8 below the cleaning device 7, in which a screw conveyor 9 is rotatably mounted, which causes the dirt to be transported out of the discharge trough 8.
- the filtrate collecting inside the distributor plate 3 is removed from the container 1 at 10.
- FIG. 2 shows an embodiment of the cleaning device according to the invention as it is used for stripping off the magnetic filter rods.
- the cleaning device 7 is arranged inside the housing 11 on the container 1.
- the magnetic filter rods 5 are guided on both sides by the conveyor chains 4 transported through the lower region of the housing 11 of the cleaning device 7 and stopped in cycles.
- a rodless cylinder 12 is arranged in the housing 11, above and parallel to the magnetic filter rods 5.
- This rodless cylinder 12 carries on its lower side the slide 13, on which stripper elements 14, which extend downward, are arranged.
- the stripper elements 14 are designed as plates which can each be pivoted through 90 degrees about their vertical central axis 15.
- a pivot cylinder 16 is used, which acts on the dirt wipers 14 via a lever linkage 17, 18.
- the plates of the dirt wipers are provided with semicircular recesses 19 which correspond to half the profile of the magnetic filter rods.
- a recess 19 engages around an adjacent magnetic filter rod, which is wiped off in the direction of movement 20 by moving the slide 13 via the rodless cylinder 14.
- the stripped dirt falls down into the trough 21 of the screw conveyor 22, which, driven at 23, transports the dirt to the sludge discharge 24.
- lifting cylinders 25 are provided on both sides of the rodless cylinder 12, which, acting vertically, are articulated at 27 on the one hand on the housing 11 and on the other hand on the levers 26 carrying the rodless cylinder 12.
- the lifting cylinder 25 is acted upon, the rodless cylinder 12 and with it the slide 13 are raised together with the wipers 14.
- FIG. 3 the area of the magnetic filter rods 5, which is streaked by the wipers 14, is shown in an enlarged detail.
- the conveyor chain 4 is shown in the left half of the drawing.
- the magnetic filter rods 5 are articulated to it at 28.
- the swivel device for the wipers 14 is shown above the magnetic filter rods 5.
- the wipers 14 With the - also rodless - swivel cylinder 16, which engages with a driver 29 in the bolt 30 of a lever 18, the wipers 14 are pivoted via the levers 17 connected to the lever 18 at 31, in each case by 90 degrees to their end position.
- the wipers 14 together with the rodless cylinder 12 can be lifted out of the space between the magnetic filter rods 5, the locking device 32 (FIG. 2) simultaneously releasing the conveyor chain 4 for cyclical further transport in the raised state.
- the locking device serves to center the magnetic filter rods 5 during the stripping process and at the same time gives the conveyor chain 4 and the magnetic filter rods 5 the necessary hold
- the dirt wipers 14 are guided by lowering the lifting cylinder 25 into the space between the magnetic filter rods 5 and pivoted there by means of the lever system 16, 17, 18, 30 and 31 by 90 degrees so that the semicircular recesses 19 of the dirt wipers 14 each encompass half the profile of an adjacent magnetic filter rod.
- the middle of the magnetic filter rods shown is detected on both sides by a dirt wiper 14, so that the two recesses 19 of the two dirt wipers 14 clean the middle rod on all sides.
- the two outer magnetic filter rods 5 are each only half coated by the wiper 14; there however a cyclical transport of the magnetic filter rods 5 is provided in one and the same direction, all magnetic filter rods 5 are finally cleaned the same number of times by the wipers.
- FIG. 1 Another embodiment of the dirt wipers is shown in FIG.
- the rodless cylinder 12 also carries a slide 13 on which three dirt wipers 14 are arranged on a holder 33.
- the dirt wipers 14 enclose the entire circumference of the magnetic filter rods 5 arranged underneath.
- the dirt wipers 14 consist of an elastic vulcanized material and are continuously slotted at 34 on their undersides. The slot runs radially in the direction of the magnetic filter rods 5 and ends on the outside in bevels 35 which diverge into the slots 34.
- the magnetic filter rods 5 are thinner in diameter at one end 36.
- the dirt wipers 14 are placed, in which, by lowering the lifting cylinder 25, the rodless cylinder 12 is moved down together with the slide 13 and the holder 33, as a result of which the slits 34 are spread out by means of the bevels 35 and the diameter at the end 36 the magnetic filter rods 5 are pressed. Thereafter, the stripping process in the direction designated by 20 in Figure 2 is initiated by acting on the rodless cylinder 12.
Description
Die Erfindung betrifft einen Kettenmagnetabscheider mit horizontal angeordneten Magnetfilterstäben, die von endlos umlaufenden Förderketten oder dergleichen in gleichen Abständen und parallel zueinander taktweise durch die zu reinigende Flüssigkeit transportiert werden und die oberhalb der Flüssigkeit eine Reinigungsvorrichtung durchlaufen, in der die Magnetfilterstäbe mit Hilfe von geradlinig in ihrer Längsrichtung geführten Schmutzabstreifern gereinigt werden, die mit entsprechend dem Profil der Magnetfilterstäbe geformten Ausnehmungen die Magnetfilterstäbe umgreifen.The invention relates to a chain magnetic separator with horizontally arranged magnetic filter rods, which are transported by endlessly rotating conveyor chains or the like at equal intervals and in parallel to each other through the liquid to be cleaned and which pass through a cleaning device above the liquid, in which the magnetic filter rods with the help of straight in their Dirt wipers guided in the longitudinal direction are cleaned, which engage around the magnetic filter rods with recesses shaped according to the profile of the magnetic filter rods.
Eine Vorrichtung der gattungsgemäßen Art ist aus dem deutschen Patent DE-C-24 29 849 bekannt. Bei diesem Stand der Technik sind die Schmutzabstreifer von Paaren endlos umlaufender Ketten getragen. Dabei ist jeweils ein Paar oberhalb und ein Paar unterhalb der Magnetfilterstäbe angeordnet, wobei die Schmutzabstreifer an den Ketten befestigt mit halbkreisförmigen Ausnehmungen versehen sind, so daß ein Paar von Schmutzabstreifern die gesamte Oberfläche eines Filterstabes reinigen kann. Die Magnetfilterstäbe werden taktweise jeweils um eine Teilung weiterbewegt, so daß bei entsprechend lang ausgebildeten Schmutzabstreifern mit mehreren nebeneinanderliegenden halbkreisförmigen Ausnehmungen zwei oder drei nebeneinanderliegende Magnetfilterstäbe gleichzeitig bestrichen werden. Auf diese Weise wird jeder Magnetstab mehrmals abgestreift, bevor er erneut in die zu reinigende Flüssigkeit eintaucht.A device of the generic type is known from German patent DE-C-24 29 849. In this prior art, the dirt wipers are carried by pairs of endless chains. A pair is arranged above and a pair below the magnetic filter rods, the dirt wipers attached to the chains are provided with semicircular recesses, so that a Pair of dirt scrapers can clean the entire surface of a filter rod. The magnetic filter rods are moved one cycle at a time, so that two or three magnetic filter rods lying next to one another are coated simultaneously with appropriately long dirt wipers with several semicircular recesses lying next to one another. In this way, each magnetic rod is stripped several times before it is immersed again in the liquid to be cleaned.
Der mit Hilfe der Schmutzabstreifer von den Magnetfilterstäben entfernte Schmutz wird durch eine unterhalb der Reinigungsvorrichtung angeordnete Austragvorrichtung daran gehindert, in die Flüssigkeit zurückzufallen.The dirt removed from the magnetic filter rods with the aid of the dirt wipers is prevented from falling back into the liquid by a discharge device arranged below the cleaning device.
Der bekannte Kettenmagnetabscheider mit den umlaufenden, die Schmutzabstreifer tragenden Ketten ist mechanisch sehr aufwendig, die Vorrichtung unterliegt, weil der abgestreifte Schlamm auf die unteren Ketten fällt hohem Verschleiß und ist wartungsintensiv. Auch der Platzbedarf ist infolge der Ketten, den erforderlichen Umlenkeinrichtungen und der Antriebskinematik sehr hoch. Um ein exaktes Abstreifen der Magnetfilterstäbe zu erzielen, ist eine hohe Justiergenauigkeit erforderlich.The known chain magnetic separator with the rotating chains carrying the dirt wipers is mechanically very complex, the device is subject to high wear and tear because the stripped sludge falls on the lower chains and is maintenance-intensive. The space requirement is also very high due to the chains, the required deflection devices and the drive kinematics. In order to achieve an exact wiping of the magnetic filter rods, a high adjustment accuracy is necessary.
Aufgabe der vorliegenden Erfindung ist es, ausgehend von dem vorstehend geschilderten Stand der Technik, einen Kettenmagnetabscheider mit einer Reinigungsvorrichtung zu versehen, die nicht wesentlich größer als der die zu reinigende Flüssigkeit aufnehmende Behälter ist und die hinsichtlich der Mechanik einfach und robust, sowie mit handelsüblichen Bauteilen zu erstellen ist.The object of the present invention is, based on the prior art described above, to provide a chain magnetic separator with a cleaning device which is not substantially larger than the container holding the liquid to be cleaned and which is simple and robust in terms of mechanics, and with commercially available components is to be created.
Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß die Schmutzabstreifer oberhalb der Magnetfilterstäbe an einem Schlitten angeordnet sind welcher Teil eines Linearzylinders, vorzugsweise eines kolbenstangenlosen Zylinders ist und daß der Schlitten und/oder der Zylinder gegenüber den Magnetfilterstäben vertikal heb- und senkbar am Rahmen des Kettenmagnetabscheiders angeordnet ist.To solve the problem it is proposed according to the invention that the dirt wipers above the magnetic filter rods are arranged on a slide which is part of a linear cylinder, preferably a rodless cylinder, and that the slide and / or the cylinder can be raised and lowered vertically on the frame of the chain magnetic separator relative to the magnetic filter rods is arranged.
Der Ersatz der aufwendigen Kettenpaare zum Antrieb der Schmutzabstreifer durch Linearzylinder ermöglicht den Einsatz eines handelsüblichen Bauteiles, das darüber hinaus in äußerst platzsparender Weise mit geringer Mechanik den bisherigen Antrieb ersetzt. Die Anordnung der Schmutzabstreifer an dem vom Linearzylinder, insbesondere einem kolbenstangenlosen Zylinder bewegten Schlitten ermöglicht ein Anheben der Schmutzabstreifer durch Vertikalbewegung des Schlittens und/oder des Zylinders. Im angehobenen Zustand kann die Förderkette um einen Takt weiterbewegt werden, bevor die Schmutzabstreifer mit dem Schlitten und/oder dem Zylinder in die Arbeitsstellung abgesenkt werden.The replacement of the complex chain pairs for driving the dirt wipers with linear cylinders enables the use of a commercially available component that also replaces the previous drive in an extremely space-saving manner with little mechanics. The arrangement of the dirt wipers on the slide moved by the linear cylinder, in particular a rodless cylinder, enables the dirt wipers to be lifted by vertical movement of the slide and / or the cylinder. In the raised state, the conveyor chain can be moved one cycle before the dirt wipers are lowered into the working position with the carriage and / or the cylinder.
In einer günstigen Ausgestaltung erfolgt das Anheben und Absenken des Schlittens und/oder des Zylinders dadurch, daß beidseitig des Linearzylinders vertikale Hubzylinder angelenkt sind. Mit diesen Hubzylindern, die im Gleichlauf betrieben werden, wird die gesamte Einrichtung angehoben und aus dem Drehbereich der umlaufenden Magnetfilterstäbe gebracht.In a favorable embodiment, the carriage and / or the cylinder are raised and lowered by vertical lifting cylinders being articulated on both sides of the linear cylinder. With these lifting cylinders, which are operated in synchronism, the entire device is lifted and brought out of the rotating area of the rotating magnetic filter rods.
In einer günstigen Ausgestaltung der Erfindung wird vorgeschlagen, daß die Schmutzabstreifer aus einer Ruhestellung oberhalb der Magnetfilterstäbe in die Abstreifstellung bewegbar sind, in der jeder Schmutzabstreifer mit seiner Ausnehmung einen Magnetfilterstab am gesamten Umfang umgreift, wobei die Ausnehmungen der Schmutzabstreifer mit radialen, den Magnetfilterstäben zugewandten, in deren Längsrichtung verlaufenden Schlitzen versehen sind, die beim Aufsetzen der Schmutzabstreifer auf die Mantelfläche der im Endbereich durchmesserreduzierten Magnetfilterstäbe vermittels zu den Schlitzen divergierender Abschrägungen auseinanderspreizbar sind.In a favorable embodiment of the invention it is proposed that the dirt wipers can be moved from a rest position above the magnetic filter rods into the wiping position in which each dirt wiper engages around the entire circumference of a magnetic filter rod, the recesses of the dirt wipers with radial, the magnetic filter rods facing, in the longitudinal direction extending slots are provided, which can be spread apart when the dirt wipers on the lateral surface of the reduced diameter magnetic filter rods in the end region by means of bevels diverging to the slots.
Die Verwendung von vertikal geteilten Abstreifelementen ermöglicht eine einfache Ausgestaltung der Schmutzabstreifer, beispielsweise aus einem elastischen Material wie Vulkolan oder dergleichen. Ein solches Material ermöglicht das "Einklinken" der Schmutzabstreifer in die Magnetfilterstäbe, vorzugsweise an dem Ende der Magnetfilterstäbe, welches einen geringeren Durchmesser als der magnetische Teil der Stäbe aufweist. Die so verwendeten Schmutzabstreifer sind einfach in der Herstellung, kostengünstig in der Anschaffung und zentrieren sich leicht auf den Magnetfilterstäben.The use of vertically divided scraper elements enables the dirt scraper to be designed in a simple manner, for example from an elastic material such as Vulkolan or the like. Such a material enables the dirt wipers to “latch” into the magnetic filter rods, preferably at the end of the magnetic filter rods, which has a smaller diameter than the magnetic part of the rods. The dirt wipers used in this way are simple to manufacture, inexpensive to purchase and are easily centered on the magnetic filter rods.
In einer anderen Ausgestaltung der Erfindung wird vorgeschlagen, daß die Schmutzabstreifer aus einer Ruhestellung oberhalb der Magnetfilterstäbe in Arbeitsstellung zwischen zwei benachbarte Magnetfilterstäbe bewegbar sind, wobei die Schmutzabstreifer aus am Schlitten um eine senkrechte Mittelachse um 90 Grad schwenkbar angeordneten Platten mit diametral gegenüberliegenden, nach außen offenen halbkreisförmigen Ausnehmungen bestehen, die in einer Schwenkstellung (Abstreifstellung) jeweils ein halbes Magnetfilterstabprofil umgreifen.In another embodiment of the invention, it is proposed that the dirt wipers can be moved from a rest position above the magnetic filter rods in the working position between two adjacent magnetic filter rods, the dirt wipers being arranged on the slide and pivoting about a vertical central axis by 90 degrees with diametrically opposed plates that are open to the outside there are semicircular recesses which each encompass half a magnetic filter rod profile in a swivel position (stripping position).
Auch in dieser Ausgestaltung der Erfindung sind alle mechanischen Einrichtungen zum Heben und Senken sowie Verschwenken der Schmutzabstreifer oberhalb der Magnetfilterstäbe angeordnet. Der Mechanismus zum Absenken der Schmutzabstreifer bewegt den Schlitten und/oder den Zylinder insgesamt, die verwendeten Linearzylinder benötigen nur geringen Platz und sind mit der Heb- und Senkvorrichtung oberhalb des Behälters der zu reinigenden Flüssigkeit anzuordnen. Auch im letzteren Fall werden handelsübliche Elemente verwendet, die die Ersatzteilhaltung, die Wartung und letztlich den Preis der Einrichtung günstig beeinflussen.In this embodiment of the invention, too, all mechanical devices for lifting and lowering and pivoting the dirt wipers are arranged above the magnetic filter rods. The mechanism for lowering the dirt wipers moves the carriage and / or the cylinder as a whole, the linear cylinders used require only little space and are to be arranged with the lifting and lowering device above the container of the liquid to be cleaned. In the latter case, too, commercially available elements are used which have a favorable influence on the spare parts inventory, maintenance and ultimately the price of the facility.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben. Es zeigt:
- Fig. 1
- einen Querschnitt durch den erfindungsgemäßen Kettenmagnetabscheider in grob vereinfachter Darstellung,
- Fig. 2
- einen Längsschnitt durch die Reinigungsvorrichtung mit verschwenkbaren Schmutzabstreifern,
- Fig. 3
- eine Draufsicht auf die Kinematik der Schmutzabstreifer gemäß Figur 2,
- Fig. 4
- eine alternative Ausbildung der Schmutzabstreifer mit vergrößerter Darstellung der Reinigungsvorrichtung und
- Fig. 5
- eine um 90 Grad gedrehte Ansicht der Alternative nach
Figur 4.
- Fig. 1
- a cross section through the chain magnetic separator according to the invention in a roughly simplified representation,
- Fig. 2
- a longitudinal section through the cleaning device with pivotable dirt wipers,
- Fig. 3
- 2 shows a top view of the kinematics of the dirt wipers according to FIG. 2,
- Fig. 4
- an alternative embodiment of the dirt scraper with an enlarged view of the cleaning device and
- Fig. 5
- a view rotated by 90 degrees of the alternative according to FIG. 4.
In Figur 1 ist mit 1 der Behälter bezeichnet, in den bei 2 die von magnetischen Partikeln zu reinigende Flüssigkeit eingeleitet wird. Im Inneren des Behälters 1 ist ein Verteilerblech 3 angeordnet, welches mit Löchern für die gereinigte Flüssigkeit versehen ist. Um das U-förmig gebogene Verteilerblech herumgeführt ist die Förderkette 4, die über ein Kettenrad mit intermitierend beaufschlagtem Kolben-Zylinder-Antrieb 6 taktweise bewegbar ist. Die Förderkette 4 besteht aus zwei voneinander beabstandeten Kettenzügen, die zwischen sich die Magnetstäbe 5 tragen und diese, taktweise umlaufend durch die Flüssigkeit im Behälter 1 führen. Während der Bewegung der Magnetstäbe 5 durch die Flüssigkeit setzt sich magnetischer und auch nichtmagnetischer Schmutz an den Magnetfilterstäben 5 ab, der nach jedem vollendeten Umlauf der Förderkette 4 durch die Flüssigkeit von den Magnetfilterstäben entfernt werden muß.In FIG. 1, 1 denotes the container into which the liquid to be cleaned of magnetic particles is introduced at 2. In the interior of the container 1, a
Wie in Figur 1 erkennbar, ist die später noch zu beschreibende Reinigungsvorrichtung 7 oberhalb der Förderkette 4 und der Magnetfilterstäbe 5 angeordnet, mit deren Hilfe die Magnetfilterstäbe vom Schmutz befreit werden. Der von den Magnetfilterstäben entfernte Schmutz fällt in den Austragtrog 8 unterhalb der Reinigungsvorrichtung 7, in dem eine Förderschnecke 9 drehend gelagert ist, die den Transport des Schmutzes aus dem Austragtrog 8 bewirkt. Das sich im Inneren des Verteilerblechs 3 sammelnde Filtrat wird bei 10 aus dem Behälter 1 entnommen.As can be seen in FIG. 1, the cleaning device 7 to be described later is arranged above the
In Figur 2 ist eine erfindungsgemäße Ausbildung der Reinigungsvorrichtung dargestellt, wie sie zum Abstreifen der Magnetfilterstäbe Verwendung findet. Die Reinigungsvorrichtung 7 ist innerhalb des Gehäuses 11 auf dem Behälter 1 angeordnet. Die Magnetfilterstäbe 5 werden von den Förderketten 4 beidseitig geführt durch den unteren Bereich des Gehäuses 11 der Reinigungsvorrichtung 7 transportiert und taktweise angehalten. Des weiteren ist im Gehäuse 11 ein kolbenstangenloser Zylinder 12 angeordnet, und zwar oberhalb und parallel zu den Magnetfilterstäben 5. Dieser kolbenstangenlose Zylinder 12 trägt an seiner unteren Seite den Schlitten 13, an dem Abstreiferelemente 14, sich nach unten erstreckend, angeordnet sind. Die Abstreiferelemente 14 sind als Platten ausgebildet, die um ihre senkrechte Mittelachse 15 jeweils um 90 Grad verschwenkbar sind. Hierzu dient ein Schwenkzylinder 16, der über ein Hebelgestänge 17, 18 auf die Schmutzabstreifer 14 wirkt. Die Platten der Schmutzabstreifer sind mit halbkreisförmigen Ausnehmungen 19 versehen, die dem halben Profil der Magnetfilterstäbe entsprechen. Beim Verschwenken der Abstreiferelemente 14 umgreift je eine Ausnehmung 19 einen benachbarten Magnetfilterstab, der durch Bewegung des Schlittens 13 über den kolbenstangenlosen Zylinder 14 in Bewegungsrichtung 20 abgestreift wird. Der abgestreifte Schmutz fällt nach unten in den Trog 21 der Förderschnecke 22, die, bei 23 angetrieben, den Schmutz zum Schlammaustrag 24 transportiert.FIG. 2 shows an embodiment of the cleaning device according to the invention as it is used for stripping off the magnetic filter rods. The cleaning device 7 is arranged inside the
Zum taktweisen Weiterbewegen der Magnetfilterstäbe 5 mit Hilfe der Förderkette 4 werden die Abstreifer 14 aus dem Bereich der Magnetfilterstäbe 5 herausgehoben. Zu diesem Zweck sind beidseitig des kolbenstangenlosen Zylinders 12 Hubzylinder 25 vorgesehen, die, vertikal wirkend, einerseits am Gehäuse 11 und andererseits an den den kolbenstangenlosen Zylinder 12 tragenden Hebeln 26 bei 27 angelenkt sind. Beim Beaufschlagen der Hubzylinder 25 wird der kolbenstangenlose Zylinder 12 und mit ihm der Schlitten 13 zusammen mit den Abstreifern 14 angehoben.To move the
In Figur 3 ist in vergrößerter ausschnittweiser Darstellung der Bereich der Magnetfilterstäbe 5 dargestellt, der von den Abstreifern 14 bestrichen wird. Die Förderkette 4 ist in der linken Zeichnungshälfte dargestellt. An ihr sind bei 28 die Magnetfilterstäbe 5 angelenkt. Oberhalb der Magnetfilterstäbe 5 ist die Schwenkeinrichtung für die Abstreifer 14 dargestellt. Mit dem - ebenfalls kolbenstangenlosen - Schwenkzylinder 16, der mit einem Mitnehmer 29 in den Bolzen 30 eines Hebels 18 eingreift, werden über die mit dem Hebel 18 bei 31 verbundenen Hebel 17 die Abstreifer 14 verschwenkt, und zwar jeweils um 90 Grad zu ihrer Endstellung. In der dargestellten Endstellung können die Abstreifer 14 zusammen mit dem kolbenstangenlosen Zylinder 12 aus dem Zwischenraum zwischen den Magnetfilterstäben 5 herausgehoben werden, wobei gleichzeitig die Arretiervorrichtung 32 (Figur 2) im angehobenen Zustand die Förderkette 4 zum taktweisen Weitertransport freigibt. Die Arretiervorrichtung dient dem Zentrieren der Magnetfilterstäbe 5 während des Abstreifvorganges und gibt gleichzeitig der Förderkette 4 und den Magnetfilterstäben 5 den notwendigen Halt.In FIG. 3, the area of the
Zum Abstreifen der Magnetfilterstäbe 5 werden die Schmutzabstreifer 14 durch Absenken der Hubzylinder 25 in den Zwischenraum zwischen die Magnetfilterstäbe 5 geführt und dort mit Hilfe des Hebelsystems 16, 17, 18, 30 und 31 um 90 Grad so verschwenkt, daß die halbkreisförmigen Ausnehmungen 19 der Schmutzabstreifer 14 jeweils das halbe Profil eines benachbarten Magnetfilterstabes umgreifen. Dabei wird aus Figur 3 deutlich, daß der mittlere der dargestellten Magnetfilterstäbe beidseitig von je einem Schmutzabstreifer 14 erfaßt wird, so daß die beiden Ausnehmungen 19 der beiden Schmutzabstreifer 14 den mittleren Stab allseitig reinigen. Die beiden äußeren Magnetfilterstäbe 5 werden jeweils nur zur Hälfte von dem Abstreifer 14 bestrichen; da jedoch ein taktweises Transportieren der Magnetfilterstäbe 5 in ein und derselben Richtung vorgesehen ist, werden alle Magnetfilterstäbe 5 schließlich gleich oft durch die Abstreifer gereinigt.To strip the
In Figur 4 ist eine andere Ausgestaltung der Schmutzabstreifer dargestellt. Der kolbenstangenlose Zylinder 12 trägt auch hier einen Schlitten 13, an dem an einer Halterung 33 drei Schmutzabstreifer 14 angeordnet sind. Die Schmutzabstreifer 14 umschließen den gesamten Umfang der darunter angeordneten Magnetfilterstäbe 5. Die Schmutzabstreifer 14 bestehen aus einem elastischen Vulkolanmaterial und sind an ihren Unterseiten bei 34 durchgehend geschlitzt. Der Schlitz verläuft radial in Richtung der Magnetfilterstäbe 5 und endet außen in Abschrägungen 35, die zu den Schlitzen 34 divergieren.Another embodiment of the dirt wipers is shown in FIG. The
Wie in Figur 5 erkennbar, sind die Magnetfilterstäbe 5 an einem Ende 36 im Durchmesser dünner ausgebildet. In diesem Bereich werden die Schmutzabstreifer 14 aufgesetzt, in dem durch Absenken der Hubzylinder 25 der kolbenstangenlose Zylinder 12 zusammen mit dem Schlitten 13 und der Halterung 33 nach unten gefahren wird, wodurch vermittels der Abschrägungen 35 die Schlitze 34 gespreizt und über den Durchmesser am Ende 36 der Magnetfilterstäbe 5 gepreßt werden. Danach wird durch Beaufschlagen des kolbenstangenlosen Zylinders 12 der Abstreifvorgang in der in Figur 2 mit 20 bezeichneten Richtung eingeleitet.As can be seen in FIG. 5, the
Claims (6)
- Chain-driven magnetic separator with horizontally disposed magnetic filter bars which are transported at equal distances from and parallel to one another in a fixed cycle through the liquid to be cleaned by continuously circulating conveyor chains or the like and which pass through a cleaning device above the liquid, in which device the magnetic filter bars are cleaned by means of dirt scrapers which are guided in a straight line in their longitudinal direction and which embrace the magnetic filter bars with recesses shaped according to the profile of the latter, characterised in that the dirt scrapers (14) are disposed above the magnetic filter bars (5) on a carriage (13) which is part of a linear cylinder (12), preferably a cylinder without a piston rod, and that the carriage (13) and/or the cylinder (12) is/are disposed on the frame of the chain-driven magnetic separator such that it/they can be raised and lowered vertically with respect to the magnetic filter bars (5).
- Chain-driven magnetic separator according to claim 1, characterised in that vertical lifting cylinders (25) are attached in a hinged manner on both sides of the linear cylinder (12).
- Chain-driven magnetic separator according to claims 1 and 2, characterised in that the dirt scrapers (14) can be moved out of an inoperative position above the magnetic filter bars (5) into the scraping position, in which each dirt scraper (14) embraces a magnetic filter bar (5) over the entire circumference with its recess (19), the recesses (19) of the dirt scrapers (14) being provided with radial slits (34) which face the magnetic filter bars (5), extend in their longitudinal direction and can be expanded by means of bevels (35) diverging towards the slits when the dirt scrapers (14) are placed over the surface area of the magnetic filter bars (5), the diameter of which is reduced in the end region (36).
- Chain-driven magnetic separator according to claims 1 and 2, characterised in that the dirt scrapers (14) can be moved out of an inoperative position above the magnetic filter bars (5) into the operating position between two adjacent magnetic filter bars (5), the dirt scrapers (14) consisting of plates which are disposed on the carriage (13) such that they can be pivoted through 90 degrees about a perpendicular centre shaft (17) and have diametrically opposite, semicircular recesses (19) which are open towards the outside and each embrace half a magnetic filter bar profile in one pivoted position (scraping position).
- Chain-driven magnetic separator according to claims 1 to 4, characterised in that, in order to transport the magnetic filter bars (5) though the liquid in a fixed cycle, the conveyor chain (4) is guided over a drive wheel which can be driven by a pneumatic cylinder (6), which is acted upon intermittently, via a freewheel.
- Chain-driven magnetic separator according to claims 1 to 5, characterised in that the position of the magnetic bars can be accurately set by arresting devices (32) during the scraping process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4130421 | 1991-09-10 | ||
| DE4130421A DE4130421A1 (en) | 1991-09-10 | 1991-09-10 | CHAIN MAGNETIC SEPARATOR |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0532136A1 EP0532136A1 (en) | 1993-03-17 |
| EP0532136B1 true EP0532136B1 (en) | 1995-03-22 |
Family
ID=6440484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92250238A Expired - Lifetime EP0532136B1 (en) | 1991-09-10 | 1992-09-02 | Magnetic separator with chains |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0532136B1 (en) |
| DE (2) | DE4130421A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4337484C1 (en) * | 1993-11-03 | 1995-03-09 | Fes Gmbh | Chain magnet separator with wiping device for magnetic rods |
| DE19726745B4 (en) * | 1997-06-24 | 2007-06-21 | Bär + Co. Anlagentechnik GmbH | Method for separating particles |
| US6277276B1 (en) | 2000-02-11 | 2001-08-21 | Jack R. Bratten | Filter apparatus with magnetic separation |
| EA013140B1 (en) * | 2005-08-24 | 2010-02-26 | Ромар Интернэшнл Лимитед | Removal of magnetic particles from a fluid |
| CN102179295A (en) * | 2011-03-09 | 2011-09-14 | 李泽 | Method and device for removing iron in fluid in continuous chain type |
| EP2864050B1 (en) * | 2012-06-22 | 2019-11-27 | Norbert Ruez GmbH & Co. KG | Device and method for separating out magnetizable impurities from flowing fluids |
| GB201213458D0 (en) | 2012-07-27 | 2012-09-12 | Romar Internat Ltd | Apparatus and method for handling liquids or slurries from an oil or gas process |
| CN107570321A (en) * | 2017-09-19 | 2018-01-12 | 荆门市格林美新材料有限公司 | It is a kind of circulating except the device of magnetic foreign body |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL177804C (en) * | 1974-06-21 | Montanus Industrieanlagen Gmbh | MAGNETIC FILTER DEVICE. | |
| DE2710005C2 (en) * | 1977-03-08 | 1982-07-15 | Montanus Industrieanlagen Gmbh, 4300 Essen | Magnetic filter system |
| DE2903178C2 (en) * | 1979-01-27 | 1985-01-31 | Mannesmann AG, 4000 Düsseldorf | Magnetic filter system |
-
1991
- 1991-09-10 DE DE4130421A patent/DE4130421A1/en active Granted
-
1992
- 1992-09-02 DE DE59201716T patent/DE59201716D1/en not_active Expired - Lifetime
- 1992-09-02 EP EP92250238A patent/EP0532136B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE4130421A1 (en) | 1993-03-11 |
| DE4130421C2 (en) | 1993-06-17 |
| DE59201716D1 (en) | 1995-04-27 |
| EP0532136A1 (en) | 1993-03-17 |
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