EP1445024A1 - Magnetic sludge filtering device - Google Patents

Magnetic sludge filtering device Download PDF

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Publication number
EP1445024A1
EP1445024A1 EP03293089A EP03293089A EP1445024A1 EP 1445024 A1 EP1445024 A1 EP 1445024A1 EP 03293089 A EP03293089 A EP 03293089A EP 03293089 A EP03293089 A EP 03293089A EP 1445024 A1 EP1445024 A1 EP 1445024A1
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EP
European Patent Office
Prior art keywords
magnet
housing
enclosure
sludge
magnetic
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.)
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Application number
EP03293089A
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German (de)
French (fr)
Inventor
Gérard Plumerand
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Progalva Net et 9
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Progalva Net et 9
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Publication of EP1445024A1 publication Critical patent/EP1445024A1/en
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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
    • B03C1/286—Magnetic plugs and dipsticks disposed at the inner circumference of a recipient, e.g. magnetic drain bolt
    • 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
    • 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
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid

Definitions

  • the present invention relates to sludge using magnetic phenomena for get rid of sludge liquids with which they are charged.
  • the invention is particularly advantageous for sludge removal of water circulating in a closed circuit in the piping for heating installations. We know that in these installations, corrosion or erosion phenomena mechanical walls of the ducts, result in water of heating gradually loads with sludge which are largely made up of magnetic particles.
  • sludge removal devices magnetic applicable to liquids such as water, have magnets that we immerse in water to sludge.
  • Such device is described, for example, in the patent document American US 2,693,079. This prior art document explains how the magnetic attraction acts to retain the elements magnetic on the magnet and how it is then extracted liquid and cleaned by scraping.
  • the present invention has sought to improve the design of art magnetic sludge removal devices in particular to make them better suited to mounting and to operate on pipes in which the liquid to be sludge normally circulates continuously, as it is the case in particular of water circulation heating installations in closed circuit.
  • the invention also aims to allow to easily equip existing installations and facilitate a periodic sludge which is practically carried out without disturbing the operation of the installations, in particular by not requiring disassembly of the device or stopping the heating.
  • the present invention therefore proposes to circulate the liquid to be sludged through an enclosure connecting to the pipeline in which it circulates continuously and to pass it, in said enclosure, in the vicinity of non-magnetic walls limiting a housing in which a magnet is mounted movable between a active position in which it operates in magnetic attraction sludge present in the liquid circulating on said walls of the housing and a position for withdrawing from said housing which causes the separation of said sludge, which then falls and advantageously meet by decantation at the bottom of said pregnant.
  • a periodic command of a stopping the circulation of the liquid through the enclosure and a synchronized emptying of the enclosure, advantageously after removal magnet, to evacuate the collected sludge we can thus perform periodic maintenance of the enclosure without the intervention of a operator.
  • the magnet is generally shaped cylindrical and mounted in vertical sliding in its housing.
  • the device according to the invention is then advantageously equipped with means to prevent that by following the lifting movement of magnet out of its housing, the sludge is entrained until the upper part of the enclosure.
  • These means allow make sure that any sludge that has been attracted to the magnet and that have accumulated on the walls of his housing be well detached from the walls of the housing from the magnet, without let drag in the movement of the latter.
  • They can in particular be constituted by a stop piece, advantageously made of non-magnetic material, fixed inside the cross enclosure of the wall of the magnet housing, in a position that the magnet protrudes when removed.
  • FIGS. 1 and 2 show a device for sludge removal 1 according to the invention, which can be used in any liquid circulation heating installation, this liquid being in generated water.
  • the device is designed to be interposed on a line for the continuous circulation of the liquid, at which it connects to the side of the liquid inlet and the side of the outlet. More exactly, it is generally mounted in derivation on a main pipeline of the installation, in which the water from heating circulates continuously.
  • the demister device itself includes a enclosure 2, providing a determined volume of circulation to the liquid, which is illustrated in the preferred form of a section enclosure cylindrical, arranged vertically, and which has a tube inlet 3 and outlet manifold 4, fitted with valves carrying references 5 and 6 respectively. These valves can be operated manually or mechanically to adjust the flow of liquid through the enclosure. Preferably; it could be solenoid valves.
  • the two connecting pipes to the pipes are located in the upper part of the enclosure, in respectively diametrically opposite positions.
  • Enclosure 2 is closed at its upper part by a cover 9 which is fixed hermetically, by a mode permanent waterproof assembly, for example by welding, on enclosure 2.
  • This cover 9 has a central opening 11 which opens into a vertical cylindrical housing 12 which is fixed, hermetically, on the bottom wall of the cover 9, and of which the lower part is closed.
  • This housing 12 is arranged centrally in enclosure 2, vertically along its axis. Its walls are made of non-magnetic material. In operation, the housing 12 is on the path of the flow of the liquid to be sludged, which thus circulates through the enclosure in the annular volume formed around the housing 12, as illustrated by the arrows 13 and 14 in the figure.
  • the invention as described here comprises a movable magnet 15, the diameter is determined so that it slides freely in the housing 12 but closer to the walls of this housing.
  • the face upper of magnet 15 carries a control rod 16, which is it is incapable of exerting a magnetic attraction effect on sludge conveyed by the liquid to be sludged.
  • Its diameter is equal to clearance close to that of the opening 11 of the cover 9, so that it can slide freely in this opening through the cover.
  • the diameter of magnet 15 is significantly larger than the diameter of the rod 16, so that the cover 9 constitutes a stop limiting the movement of the magnet 15 upwards during its removal from housing 12.
  • the upper end of the rod 16 carries a handle 17 which allows the magnet 15 to be raised by hand in the housing 12.
  • a electric jack shown schematically in 18, allows, as a variant or in addition, to mechanically control the lifting of the rod 16, driving with it the magnet 15 out of the housing 12.
  • the magnet 15 is constituted by a cylindrical bar with permanent magnetization, made up of very strong magnets base of ceramic material, covered with a steel casing stainless.
  • the metallic particles of the mud magnetic are very fine (of the order of a micron) or in the case where the liquid to be sludge has a high viscosity, we can use advantageously magnetic bars made up of magnets neodymium.
  • a stop piece 21 which is fixed in the enclosure 2 against the outer wall of the housing 12, at a level which is slightly higher than the face upper of magnet 15 when it is in the active position of attraction magnetic sludge ( Figure 1).
  • this piece of stop 21 is constituted, as illustrated, by a disc annular, welded to the outer wall of the housing 12, which is produced in a non-magnetic material. The width of this stop piece is large enough that all of the magnetic sludge accumulated which go up with the magnet when it goes in its position shown in Figure 2 are retained below of this abutment piece 21.
  • the enclosure 2 has, in its lower part a drain opening 7, located substantially below the housing 12, so as to provide a settling zone for the sludge in the bottom of the enclosure. Opening the drain opening is controlled by a valve 8, manually operated or mechanical, preferably consisting of a solenoid valve remotely controlled. Note that the drain opening is advantageously located vertically in the housing 12, where they fall magnetic sludge coming off the walls of the housing the magnet when it is removed.
  • valve 8 is controlled when opening the bottom from the enclosure to a sludge evacuation pipe therein filed.
  • the sludge magnetic retained on the walls of the housing 12 tend to go up with magnet 15 when you lift it, and they accumulate under the stopper piece 21.
  • the magnet is sufficiently raised, there is no longer any attraction on the sludge magnetic, which remained under the stop piece 21, and they fall to the bottom of the container 2 to be discharged through the opening 7.
  • the emptying operations are performed automatically at regular intervals maintenance.
  • the valves 5, 6 and 8 are controlled to distance, automatically.
  • they are advantageously constituted by solenoid valves.
  • the automatic emptying procedure takes place from preferably as follows. Solenoid valves 5 and 6 are first closed and the magnet 15 is raised. Then we open the solenoid valve 8 and, after a time delay ensuring complete emptying of the enclosure, the inlet solenoid valve 5 is also opened so that to perform a rinsing causing all the sludge deposit towards the evacuation pipe. The solenoid valves 5 and 8 are then closed, then the rod 16 is lowered by means of the electric jack 18 to find the operating position of Figure 1. We can then open the two solenoid valves 5 and 6 and the circulation of the heating in the sludge removal device can resume.
  • the sludge is collected on surfaces which remain stationary, the movable magnet being out of any contact with the liquid to sludge, and they are evacuated without the slightest scraping these surfaces.
  • the configuration particularly compact device according to the invention described in example in which, in particular, the valves provided at the inlet and outlet of the annular circulation volume around the housing of the magnet are located at a level above the disc used to retain magnetic sludge during emptying operations.

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  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The sludge remover (1) consists of a chamber (2) holding a volume of the circulated liquid, and an inner vertical cavity (12) of a non-magnetic material containing a sliding magnet (15) on a rod (16) that allows it to be raised and lowered from outside the chamber. The outer surface of the cavity has a disc-shaped collar (21), also of a non-magnetic material, to hold back any magnetic sludge when the magnet is raised inside the cavity to remove it. The chamber has an port (7) with a solenoid valve (8) for discharging the collected sludge, and its inlet (3) and outlet (4) have similar valves (5, 6). The magnet can be operated mechanically, e.g. by an electric power cylinder, and actuated automatically as part of a periodic maintenance cycle.

Description

La présente invention concerne les dispositifs de désembouage qui utilisent les phénomènes magnétiques pour débarrasser des liquides de boues dont ils sont chargés. L'invention s'applique de manière particulièrement avantageuse aux désembouage de l'eau circulant en circuit fermé dans les canalisations des installations de chauffage. On sait en effet que dans ces installations, des phénomènes de corrosion ou d'érosion mécanique des parois des conduits, ont pour conséquence que l'eau de chauffage se charge progressivement de boues qui sont constituées en grande partie par des particules magnétiques.The present invention relates to sludge using magnetic phenomena for get rid of sludge liquids with which they are charged. The invention is particularly advantageous for sludge removal of water circulating in a closed circuit in the piping for heating installations. We know that in these installations, corrosion or erosion phenomena mechanical walls of the ducts, result in water of heating gradually loads with sludge which are largely made up of magnetic particles.

De manière classique, des dispositifs de désembouage magnétique applicables à des liquides tels que l'eau, comportent des aimants que l'on plonge dans l'eau à désembouer. Un tel dispositif est décrit, à titre d'exemple, dans le document de brevet américain US 2 693 079. Ce document d'art antérieur explique comment l'attraction magnétique agit pour retenir les éléments magnétiques sur l'aimant et comment ce dernier est ensuite extrait du liquide et nettoyé par raclage.Conventionally, sludge removal devices magnetic applicable to liquids such as water, have magnets that we immerse in water to sludge. Such device is described, for example, in the patent document American US 2,693,079. This prior art document explains how the magnetic attraction acts to retain the elements magnetic on the magnet and how it is then extracted liquid and cleaned by scraping.

La présente invention s'est souciée d'améliorer la conception des dispositifs de désembouage magnétique de l'art antérieur afin notamment de les rendre mieux adaptés à un montage et à un fonctionnement sur des canalisations dans lesquelles le liquide à désembouer circule normalement en continu, comme c'est le cas notamment des installations de chauffage à circulation d'eau en circuit fermé. Dans un tel contexte, l'invention vise aussi à permettre d'équiper aisément des installations existantes et à faciliter un désembouage périodique qui s'effectue pratiquement sans perturber le fonctionnement des installations, en particulier en ne demandant ni démontage du dispositif ni arrêt du chauffage. The present invention has sought to improve the design of art magnetic sludge removal devices in particular to make them better suited to mounting and to operate on pipes in which the liquid to be sludge normally circulates continuously, as it is the case in particular of water circulation heating installations in closed circuit. In such a context, the invention also aims to allow to easily equip existing installations and facilitate a periodic sludge which is practically carried out without disturbing the operation of the installations, in particular by not requiring disassembly of the device or stopping the heating.

La présente invention propose pour cela de faire circuler le liquide à désembouer à travers une enceinte se raccordant sur la canalisation dans laquelle il circule en continu et de le faire passer, dans ladite enceinte, au voisinage de parois amagnétiques limitant un logement dans lequel un aimant est monté mobile entre une position active dans laquelle il fonctionne en attraction magnétique des boues présentes dans le liquide circulation sur lesdites parois du logement et une position de retrait hors dudit logement qui provoque le décollement desdites boues, lesquelles tombent alors et se réunissent avantageusement par décantation en fond de ladite enceinte.The present invention therefore proposes to circulate the liquid to be sludged through an enclosure connecting to the pipeline in which it circulates continuously and to pass it, in said enclosure, in the vicinity of non-magnetic walls limiting a housing in which a magnet is mounted movable between a active position in which it operates in magnetic attraction sludge present in the liquid circulating on said walls of the housing and a position for withdrawing from said housing which causes the separation of said sludge, which then falls and advantageously meet by decantation at the bottom of said pregnant.

Dans des modes de mise en oeuvre préférés de l'invention, on prévoit d'assurer de manière automatique, d'une part le retrait périodique de l'aimant, d'autre part une commande périodique d'un arrêt de la circulation du liquide à travers l'enceinte et d'une vidange synchronisée de l'enceinte, avantageusement après retrait de l'aimant, pour en évacuer les boues collectées. On peut ainsi réaliser un entretien périodique de l'enceinte sans intervention d'un opérateur.In preferred embodiments of the invention, we plan to ensure automatic withdrawal on the one hand magnet, on the other hand a periodic command of a stopping the circulation of the liquid through the enclosure and a synchronized emptying of the enclosure, advantageously after removal magnet, to evacuate the collected sludge. We can thus perform periodic maintenance of the enclosure without the intervention of a operator.

Dans la pratique, l'aimant est en général de forme cylindrique et monté en coulissement vertical dans son logement. Le dispositif suivant l'invention est alors avantageusement équipé de moyens pour éviter qu'en suivant le mouvement de levage de l'aimant hors de son logement, les boues soient entraínées jusqu'à la partie supérieure de l'enceinte. Ces moyens permettent de s'assurer que toutes les boues qui ont été attirées par l'aimant et qui se sont accumulées sur les parois de son logement soient bien détachées des parois du logement au départ de l'aimant, sans se laisser entraíner dans le mouvement de ce dernier. Ils peuvent notamment être constitués par une pièce de butée, avantageusement en matériau amagnétique, fixée à l'intérieur de l'enceinte en travers de la paroi du logement de l'aimant, dans une position que l'aimant dépasse lors de son retrait.In practice, the magnet is generally shaped cylindrical and mounted in vertical sliding in its housing. The device according to the invention is then advantageously equipped with means to prevent that by following the lifting movement of magnet out of its housing, the sludge is entrained until the upper part of the enclosure. These means allow make sure that any sludge that has been attracted to the magnet and that have accumulated on the walls of his housing be well detached from the walls of the housing from the magnet, without let drag in the movement of the latter. They can in particular be constituted by a stop piece, advantageously made of non-magnetic material, fixed inside the cross enclosure of the wall of the magnet housing, in a position that the magnet protrudes when removed.

Bien que l'on parle ici d'un aimant au singulier, il est clair que le dispositif suivant l'invention pourrait tout aussi bien comporter plusieurs aimants similaires, qui peuvent être placés dans des logements différents, dont les parois baignent dans le volume de liquide en circulation dans l'enceinte.Although we are talking about a magnet in the singular, it is clear that the device according to the invention could just as well have several similar magnets, which can be placed in different dwellings, whose walls bathe in the volume of liquid circulating in the enclosure.

Les caractéristiques et avantages de l'invention ressortiront de la description qui suit d'un exemple de réalisation particulier, illustré par les dessins annexés, dans lesquels :

  • la figure 1 représente, vue de côté en coupe, un dispositif de désembouage conforme à la présente invention dans sa position de travail en fonctionnement normal de désembouage ;
  • et la figure 2 représente le dispositif de la figure 1 dans sa position de vidange.
The characteristics and advantages of the invention will emerge from the following description of a particular embodiment, illustrated by the appended drawings, in which:
  • Figure 1 shows a side view in section, a de-sludging device according to the present invention in its working position in normal de-sludge operation;
  • and Figure 2 shows the device of Figure 1 in its emptying position.

On a représenté sur les figures 1 et 2 un dispositif de désembouage 1 suivant l'invention, qui peut être utilisé dans toute installation de chauffage à circulation de liquide, ce liquide étant en générai de l'eau. Le dispositif est conçu pour être interposé sur une canalisation de circulation continue du liquide, à laquelle il se raccorde du côté de l'entrée du liquide et du côté de la sortie. Plus exactement, il se monte en général en dérivation sur une canalisation principale de l'installation, dans laquelle l'eau de chauffage circule en permanence.FIGS. 1 and 2 show a device for sludge removal 1 according to the invention, which can be used in any liquid circulation heating installation, this liquid being in generated water. The device is designed to be interposed on a line for the continuous circulation of the liquid, at which it connects to the side of the liquid inlet and the side of the outlet. More exactly, it is generally mounted in derivation on a main pipeline of the installation, in which the water from heating circulates continuously.

Le dispositif de désembouage lui-même comprend une enceinte 2, offrant un volume de circulation déterminé au liquide, qui est illustrée sous la forme préférentielle d'une enceinte de section cylindrique, disposée verticalement, et qui comporte une tubulure d'entrée 3 et une tubulure de sortie 4, équipées de vannes portant respectivement les références 5 et 6. Ces vannes peuvent être actionnées manuellement ou mécaniquement pour régler le débit de liquide à travers l'enceinte. De préférence; il peut s'agir d'électrovannes. Les deux tubulures de raccordement à la canalisation sont situées en partie haute de l'enceinte, en des positions respectivement diamétralement opposées.The demister device itself includes a enclosure 2, providing a determined volume of circulation to the liquid, which is illustrated in the preferred form of a section enclosure cylindrical, arranged vertically, and which has a tube inlet 3 and outlet manifold 4, fitted with valves carrying references 5 and 6 respectively. These valves can be operated manually or mechanically to adjust the flow of liquid through the enclosure. Preferably; it could be solenoid valves. The two connecting pipes to the pipes are located in the upper part of the enclosure, in respectively diametrically opposite positions.

L'enceinte 2 est fermée, à sa partie supérieure, par un couvercle 9 qui est fixé de manière hermétique, par un mode d'assemblage étanche permanent, par exemple par soudure, sur l'enceinte 2. Ce couvercle 9 présente une ouverture centrale 11 qui débouche dans un logement vertical cylindrique 12 qui est fixé, de manière hermétique, sur la paroi inférieure du couvercle 9, et dont la partie inférieure est fermée. Ce logement 12 est disposé de manière centrale dans l'enceinte 2, verticalement suivant son axe. Ses parois sont en matériau amagnétique. En fonctionnement, le logement 12 se trouve sur le trajet du flux du liquide à désembouer, qui circule ainsi à travers l'enceinte dans le volume annulaire ménagé autour du logement 12, comme illustré par les flèches 13 et 14 sur la figure.Enclosure 2 is closed at its upper part by a cover 9 which is fixed hermetically, by a mode permanent waterproof assembly, for example by welding, on enclosure 2. This cover 9 has a central opening 11 which opens into a vertical cylindrical housing 12 which is fixed, hermetically, on the bottom wall of the cover 9, and of which the lower part is closed. This housing 12 is arranged centrally in enclosure 2, vertically along its axis. Its walls are made of non-magnetic material. In operation, the housing 12 is on the path of the flow of the liquid to be sludged, which thus circulates through the enclosure in the annular volume formed around the housing 12, as illustrated by the arrows 13 and 14 in the figure.

En combinaison avec logement 12 le dispositif suivant l'invention tel que décrit ici comporte un aimant mobile 15, dont le diamètre est déterminé de manière à ce qu'il coulisse librement dans le logement 12 mais au plus près des parois de ce logement. La face supérieure de l'aimant 15 porte une tige 16 de commande, qui est elle inapte à exercer un effet d'attraction magnétique sur les boues véhiculées par le liquide à désembouer. Son diamètre est égal au jeu près à celui de l'ouverture 11 du couvercle 9, afin qu'elle puisse coulisser librement dans cette ouverture à travers le couvercle. Le diamètre de l'aimant 15 est nettement plus élevé que le diamètre de la tige 16, de telle sorte que le couvercle 9 constitue une butée limitant le déplacement de l'aimant 15 vers le haut, lors de son retrait du logement 12.In combination with housing 12 the following device the invention as described here comprises a movable magnet 15, the diameter is determined so that it slides freely in the housing 12 but closer to the walls of this housing. The face upper of magnet 15 carries a control rod 16, which is it is incapable of exerting a magnetic attraction effect on sludge conveyed by the liquid to be sludged. Its diameter is equal to clearance close to that of the opening 11 of the cover 9, so that it can slide freely in this opening through the cover. The diameter of magnet 15 is significantly larger than the diameter of the rod 16, so that the cover 9 constitutes a stop limiting the movement of the magnet 15 upwards during its removal from housing 12.

L'extrémité supérieure de la tige 16 porte une poignée 17 qui permet de relever l'aimant 15 à la main dans le logement 12. Un vérin électrique, schématisé en 18, permet, en variante ou en plus, de commander mécaniquement le relevage de la tige 16, entraínant avec elle l'aimant 15 hors du logement 12. Comme le montrent les figures, on a choisi dans le cas décrit de prolonger le logement 12 vers le haut, jusqu'à lui donner une hauteur au moins double de celle de l'aimant mobile 15. Ceci a pour effet qu'à l'état de fonctionnement représenté sur la figure 1, la plus grande partie de la tige 16 se trouve dans le logement 12, si bien que l'encombrement de la tige et de sa poignée reste faible. The upper end of the rod 16 carries a handle 17 which allows the magnet 15 to be raised by hand in the housing 12. A electric jack, shown schematically in 18, allows, as a variant or in addition, to mechanically control the lifting of the rod 16, driving with it the magnet 15 out of the housing 12. As shown by the figures, we chose in the case described to extend the housing 12 upwards, until it is at least twice as high that of the mobile magnet 15. This has the effect that in the state of operation shown in Figure 1, most of the rod 16 is in the housing 12, so that the space of the rod and its handle remains weak.

Dans le mode de réalisation préféré choisi pour illustrer l'invention, l'aimant 15 est constitué par un barreau cylindrique à aimantation permanente, constitué par des aimants très puissants à base de matière céramique, recouverts d'une enveloppe en acier inoxydable. Dans le cas où les particules métalliques de la boue magnétique sont très fines (de l'ordre du micron) ou dans le cas où le liquide à désembouer a une grande viscosité, on peut utiliser avantageusement des barreaux magnétiques constitués d'aimants au néodyme.In the preferred embodiment chosen to illustrate the invention, the magnet 15 is constituted by a cylindrical bar with permanent magnetization, made up of very strong magnets base of ceramic material, covered with a steel casing stainless. In the event that the metallic particles of the mud magnetic are very fine (of the order of a micron) or in the case where the liquid to be sludge has a high viscosity, we can use advantageously magnetic bars made up of magnets neodymium.

Conformément à l'invention, on prévoit une pièce de butée 21, qui est fixe dans l'enceinte 2 contre la paroi extérieure du logement 12, à un niveau qui est légèrement plus haut que la face supérieure de l'aimant 15 lorsqu'il est en position active d'attraction magnétique des boues (figure 1). Avantageusement, cette pièce de butée 21 est constituée, comme il est illustré, par un disque annulaire, soudé sur la paroi externe du logement 12, qui est réalisé en un matériau amagnétique. La largeur de cette pièce de butée est assez grande pour que l'ensemble des boues magnétiques accumulées qui remontent avec l'aimant lorsque celui-ci passe dans sa position représentée sur la figure 2 soient retenues en dessous de cette pièce de butée 21.According to the invention, there is provided a stop piece 21, which is fixed in the enclosure 2 against the outer wall of the housing 12, at a level which is slightly higher than the face upper of magnet 15 when it is in the active position of attraction magnetic sludge (Figure 1). Advantageously, this piece of stop 21 is constituted, as illustrated, by a disc annular, welded to the outer wall of the housing 12, which is produced in a non-magnetic material. The width of this stop piece is large enough that all of the magnetic sludge accumulated which go up with the magnet when it goes in its position shown in Figure 2 are retained below of this abutment piece 21.

L'enceinte 2 comporte, dans sa partie inférieure une ouverture de vidange 7, située sensiblement en dessous du logement 12, de manière à ménager une zone de décantation des boues dans le fond de l'enceinte. L'ouverture de l'orifice de vidange est commandée par une vanne 8, à commande manuelle ou mécanique, constituée préférentiellement par une électrovanne commandée à distance. On notera que l'ouverture de vidange est avantageusement située à la verticale du logement 12, là où tombent les boues magnétiques se détachant des parois du logement de l'aimant lors du retrait de celui-ci.The enclosure 2 has, in its lower part a drain opening 7, located substantially below the housing 12, so as to provide a settling zone for the sludge in the bottom of the enclosure. Opening the drain opening is controlled by a valve 8, manually operated or mechanical, preferably consisting of a solenoid valve remotely controlled. Note that the drain opening is advantageously located vertically in the housing 12, where they fall magnetic sludge coming off the walls of the housing the magnet when it is removed.

Le fonctionnement du dispositif qui vient d'être décrit se comprend déjà de ce qui précède. En fonctionnement normal, les deux électrovannes 5 et 6 sont ouvertes et le fluide du circuit de chauffage traverse le dispositif de désembouage 1. Le flux passe autour du logement 12, en léchant les parois de ce dernier, sous un débit qui peut être réglé au mieux pour éviter les turbulences, notamment dans la zone inférieure de l'enceinte. Les particules magnétiques qui sont transportées par le fluide sont alors attirées par l'aimant 15, qui se trouve dans la position active de fonctionnement représentée à la figure 1, et elles se déposent sur la face extérieure des parois du logement 12.The operation of the device which has just been described is already understands from the above. In normal operation, the two solenoid valves 5 and 6 are open and the fluid in the heating passes through the sludge removal device 1. The flow passes around the housing 12, by licking the walls of the latter, under a flow rate which can be adjusted as best as possible to avoid turbulence, especially in the lower area of the enclosure. The particles magnetic which are carried by the fluid are then attracted by magnet 15, which is in the active position of operation shown in Figure 1, and they settle on the outer face of the walls of the housing 12.

Lorsque l'épaisseur du dépôt retenu sur les parois du logement 12 est importante, l'attraction de l'aimant sur les particules magnétiques se réduit jusqu'à une valeur très faible et le dispositif de désembouage devient inefficace. Il faut donc effectuer une opération de nettoyage consistant à éliminer le dépôt de boues magnétiques qui est retenu autour du logement 12 au niveau de l'aimant 15. Suivant les besoins de chaque application particulière, cette opération peut s'effectuer périodiquement, au même rythme de préférence que les opérations de vidange des boues recueillies, ou à un rythme plus rapide le cas échéant. Dans le cas d'une vidange simultanée, on commence par fermer les vannes 5 et 6 pour interrompre provisoirement la circulation du liquide et, après avoir soulevé l'aimant 15 jusqu'à ce qu'il passe au-dessus de la pièce de butée des boues 21, on commande la vanne 8 en ouverture du fond de l'enceinte vers une conduite d'évacuation des boues qui s'y sont déposées.When the thickness of the deposit retained on the walls of the housing 12 is important, the attraction of the magnet on the particles magnetic is reduced to a very low value and the device sludge removal becomes ineffective. So you have to do a cleaning operation consisting in eliminating the deposit of sludge magnetic which is retained around the housing 12 at the level of the magnet 15. Depending on the needs of each particular application, this can be done periodically, at the same rate of preferably that the operations for emptying the sludge collected, or at a faster rate if necessary. In the event of a drain simultaneous, we start by closing valves 5 and 6 to temporarily interrupt the circulation of the liquid and, after having lift the magnet 15 until it passes over the workpiece sludge stop 21, valve 8 is controlled when opening the bottom from the enclosure to a sludge evacuation pipe therein filed.

Comme cela est schématisé sur la figure 2, les boues magnétiques retenues sur les parois du logement 12 ont tendance à remonter avec l'aimant 15 quand on soulève celui-ci, et elles s'accumulent sous la pièce de butée 21. Lorsque l'aimant est suffisamment remonté, il n'y a plus d'attraction sur les boues magnétiques, qui sont restées sous la pièce de butée 21, et elles tombent au fond du récipient 2 pour être évacuées par l'ouverture 7.As shown in Figure 2, the sludge magnetic retained on the walls of the housing 12 tend to go up with magnet 15 when you lift it, and they accumulate under the stopper piece 21. When the magnet is sufficiently raised, there is no longer any attraction on the sludge magnetic, which remained under the stop piece 21, and they fall to the bottom of the container 2 to be discharged through the opening 7.

Conformément à des caractéristiques particulièrement avantageuses de l'invention, les opérations de vidange sont réalisées de manière automatique à des intervalles réguliers d'entretien. Dans ce cas, les vannes 5, 6 et 8 sont commandées à distance, de manière automatique. A cet effet, elles sont avantageusement constituées par des électrovannes.According to particular characteristics advantageous of the invention, the emptying operations are performed automatically at regular intervals maintenance. In this case, the valves 5, 6 and 8 are controlled to distance, automatically. To this end, they are advantageously constituted by solenoid valves.

La procédure de vidange automatique se déroule de préférence comme suit. Les électrovannes 5 et 6 sont tout d'abord fermées et l'aimant 15 est remonté. On ouvre ensuite l'électrovanne 8 et, après une temporisation assurant la vidange complète de l'enceinte, on ouvre également l'électrovanne d'entrée 5, de manière à réaliser un rinçage entraínant tout le dépôt de boues vers la conduite d'évacuation. On ferme ensuite les électrovannes 5 et 8, puis on redescend la tige 16 au moyen du vérin électrique 18 pour retrouver la position de fonctionnement de la figure 1. On peut alors ouvrir les deux électrovannes 5 et 6 et la circulation du fluide de chauffage dans le dispositif de désembouage peut reprendre.The automatic emptying procedure takes place from preferably as follows. Solenoid valves 5 and 6 are first closed and the magnet 15 is raised. Then we open the solenoid valve 8 and, after a time delay ensuring complete emptying of the enclosure, the inlet solenoid valve 5 is also opened so that to perform a rinsing causing all the sludge deposit towards the evacuation pipe. The solenoid valves 5 and 8 are then closed, then the rod 16 is lowered by means of the electric jack 18 to find the operating position of Figure 1. We can then open the two solenoid valves 5 and 6 and the circulation of the heating in the sludge removal device can resume.

La description qui précède explique clairement comment l'invention procède d'une manière que ne pouvait prédire l'homme de l'art et comment elle permet d'atteindre les objectifs qu'elle s'est fixés. En particulier, les boues sont collectées sur des surfaces qui restent immobiles, l'aimant mobile étant hors de tout contact avec le liquide à désembouer, et elles sont évacuées sans le moindre grattage de ces surfaces. Par ailleurs, on notera la configuration particulièrement compacte du dispositif suivant l'invention décrit en exemple, dans lequel, en particulier, les vannes prévues en entrée et sortie du volume annulaire de circulation autour du logement de l'aimant sont situées à un niveau au-dessus du disque servant à retenir les boues magnétiques lors des opérations de vidange.The above description clearly explains how the invention proceeds in a way that man could not have predicted art and how it achieves its goals set. In particular, the sludge is collected on surfaces which remain stationary, the movable magnet being out of any contact with the liquid to sludge, and they are evacuated without the slightest scraping these surfaces. In addition, note the configuration particularly compact device according to the invention described in example, in which, in particular, the valves provided at the inlet and outlet of the annular circulation volume around the housing of the magnet are located at a level above the disc used to retain magnetic sludge during emptying operations.

Claims (10)

Dispositif de désembouage magnétique (1), caractérisé en ce qu'il comporte une enceinte (2) limitant un volume de circulation continue du liquide à désembouer, entre une tubulure d'entrée dans ladite enceinte et une tubulure de sortie hors de ladite enceinte, et un logement disposé à l'intérieur de ladite enceinte pour recevoir un aimant (15), monté mobile en coulissement dans ledit logement (12), entre une position active en attraction magnétique des boues véhiculées dans le liquide en circulation sur les parois dudit logement et une position de retrait à un niveau supérieur à celui d'une pièce (21) de butée pour les boues risquent d'être entraínées par l'aimant qui est fixe à l'intérieur de l'enceinte (2) en travers de la paroi dudit logement.Magnetic de-sludging device (1), characterized in that it comprises an enclosure (2) limiting a volume of continuous circulation of the liquid to be de-sludged, between an inlet pipe in said enclosure and an outlet pipe outside said enclosure, and a housing arranged inside said enclosure to receive a magnet (15), mounted so as to slide in said housing (12), between an active position in magnetic attraction of the sludge carried in the liquid circulating on the walls of said housing and a withdrawal position at a level higher than that of a piece (21) of abutment for sludge may be entrained by the magnet which is fixed inside the enclosure (2) across the wall of said housing. Dispositif de désembouage magnétique selon la revendication 1, caractérisé en ce que ladite pièce de butée (21) est en matériau amagnétique, ainsi que les parois dudit logement.Magnetic demister device according to claim 1, characterized in that said abutment piece (21) is made of non-magnetic material, as are the walls of said housing. Dispositif de désembouage suivant la revendication 1 ou 2, caractérisé en ce que la pièce de butée (21) a la forme d'un disque autour dudit logement.Clogging device according to claim 1 or 2, characterized in that the abutment piece (21) has the shape of a disc around said housing. Dispositif de désembouage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ledit aimant (15) est fixé à l'extrémité d'une tige (16) de commande, inapte à exercer un effet d'attraction magnétique sur les boues véhiculées par le liquide à désembouer, qui est montée à coulissement à travers un couvercle (9) de fermeture du logement (12) de l'aimant, servant également de butée pour ce dernier dans sa position de retrait.Clogging device according to any one of Claims 1 to 3, characterized in that the said magnet (15) is fixed to the end of a control rod (16), incapable of exerting a magnetic attraction effect on the sludge carried by the liquid to be scoured, which is slidably mounted through a cover (9) for closing the housing (12) of the magnet, also serving as a stop for the latter in its withdrawn position. Dispositif de désembouage magnétique selon l'une quelconque des revendications précédentes, caractérisé en ce que l'enceinte (2) comporte une ouverture de vidange (7), équipée d'une vanne (8), qui est disposée en dessous du logement (12) de l'aimant, dans une zone de collecte des boues qui tombent lors du retrait de l'aimant.Magnetic sludge removal device according to any one of the preceding claims, characterized in that the enclosure (2) has a drain opening (7), equipped with a valve (8), which is arranged below the housing (12 ) of the magnet, in a zone for collecting the sludge which falls when the magnet is removed. Dispositif de désembouage magnétique selon l'une quelconque des revendications précédentes, caractérisé en ce que l'enceinte (2) comporte une vanne d'entrée (3) et une vanne de sortie (4) du liquide en circulation qui sont disposées opposées en partie haute de ladite enceinte, avantageusement à un niveau au-dessus de ladite pièce de butée.Magnetic sludge removal device according to any one of the preceding claims, characterized in that the enclosure (2) comprises an inlet valve (3) and an outlet valve (4) of the circulating liquid which are arranged partly opposite high of said enclosure, advantageously at a level above said abutment piece. Dispositif de désembouage magnétique selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit aimant (15) et son logement sont de forme cylindrique et disposés verticalement dans l'axe de ladite enceinte, celle-ci étant également cylindrique, de manière à ménager autour du logement (12) de l'aimant un espace annulaire de circulation du liquide.Magnetic demister device according to any one of the preceding claims, characterized in that the said magnet (15) and its housing are of cylindrical shape and arranged vertically in the axis of the said enclosure, the latter also being cylindrical, so as to provide an annular space for the circulation of liquid around the housing (12) of the magnet. Dispositif de désembouage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte des moyens de commande à distance des déplacements dudit aimant (15) en coulissement dans son logement (12), qui sont avantageusement constitués essentiellement par un vérin à commande électrique (18), ainsi que des moyens de commande à distance de vannes (5, 6) d'interruption momentanée de la circulation du liquide à travers ladite enceinte et d'une vanne (8) de vidange de l'enceinte pour évacuer l'eau chargée de boues, en synchronisme avec une commande automatique du soulèvement dudit aimant en retrait dudit logement (12).De-sludging device according to any one of the preceding claims, characterized in that it comprises means for remote control of the movements of said magnet (15) sliding in its housing (12), which advantageously consist essentially of a jack electrical control (18), as well as remote control means of valves (5, 6) for momentary interruption of the circulation of the liquid through said enclosure and of a valve (8) for emptying the enclosure to evacuate the water loaded with sludge, in synchronism with an automatic control of the lifting of said magnet back from said housing (12). Dispositif de désembouage suivant la revendication 9, caractérisé en ce qu'il comporte des moyens de commande automatique dudit aimant (15) et desdites vannes (5, 6, 8) selon un cycle d'entretien périodique du dispositif de désembouage (1). De-sludging device according to claim 9, characterized in that it comprises means for automatic control of said magnet (15) and of said valves (5, 6, 8) according to a periodic maintenance cycle of the de-sludging device (1). Dispositif de désembouage selon la revendication 9, en combinaison avec la revendication 6, caractérisé en ce qu'il est prévu des moyens pour commander automatique un rinçage de ladite enceinte après sa vidange, par ouverture de la vanne d'entrée du liquide (6) pendant que la vanne d'évacuation des boues (8) reste ouverte.De-sludging device according to claim 9, in combination with claim 6, characterized in that means are provided for automatically controlling a rinsing of said enclosure after its emptying, by opening the liquid inlet valve (6) while the sludge discharge valve (8) remains open.
EP03293089A 2002-12-10 2003-12-10 Magnetic sludge filtering device Withdrawn EP1445024A1 (en)

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FR0215574 2002-12-10
FR0215574A FR2848128B1 (en) 2002-12-10 2002-12-10 MAGNETIC DISEMBLING DEVICE

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GB2415648A (en) * 2004-06-29 2006-01-04 Nicholas Mark Alford A magnetic separator
WO2011051192A1 (en) * 2009-10-30 2011-05-05 Snecma Device and method for recovering magnetic particles trapped on a magnetic plug
JP2013523430A (en) * 2010-03-29 2013-06-17 スネクマ Apparatus and method for recovering magnetic particles trapped in a magnetic plug
WO2013151415A1 (en) * 2012-04-03 2013-10-10 Spiro Enterprises B.V. Fluid circulation system for circulating an amount of fluid comprising a magnetic separator for separating suspended particles having ferromagnetic properties
WO2013151416A1 (en) * 2012-04-03 2013-10-10 Spiro Enterprises B.V. Magnetic separator comprising a flexible member
CN103480489A (en) * 2012-06-15 2014-01-01 宝山钢铁股份有限公司 Apparatus for removing iron powder adsorbed by constant magnetic plate
CN103506217A (en) * 2012-06-22 2014-01-15 中山天贸电池有限公司 Slurry demagnetizing device for battery production
GB2504259A (en) * 2012-05-15 2014-01-29 Scalemaster Ltd Magnetic sludge filter
GB2504919A (en) * 2012-05-15 2014-02-19 Scalemaster Ltd Magnetic sludge filter
EP2465612A3 (en) * 2003-10-20 2014-04-02 BioControl Systems, Inc. Magnetic enrichment method, a reactor unit for micro particles and a magnet unit
EP2664382A3 (en) * 2012-05-15 2017-01-04 Scalemaster Limited Magnetic sludge filter
WO2018065779A1 (en) * 2016-10-05 2018-04-12 Romar International Limited Apparatus and method for removing magnetic particles from liquids and slurries
CN112090585A (en) * 2020-09-08 2020-12-18 阜阳德润磁材科技有限公司 Magnetic particle processing doffer
CN112676033A (en) * 2020-12-31 2021-04-20 宁波伊玛机械工业有限公司 Liquid removes iron fillings device
CN116140055A (en) * 2023-01-03 2023-05-23 宁波西磁科技发展股份有限公司 High-viscosity slurry electromagnetic iron remover

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EP2465612A3 (en) * 2003-10-20 2014-04-02 BioControl Systems, Inc. Magnetic enrichment method, a reactor unit for micro particles and a magnet unit
GB2415648A (en) * 2004-06-29 2006-01-04 Nicholas Mark Alford A magnetic separator
WO2011051192A1 (en) * 2009-10-30 2011-05-05 Snecma Device and method for recovering magnetic particles trapped on a magnetic plug
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WO2013151416A1 (en) * 2012-04-03 2013-10-10 Spiro Enterprises B.V. Magnetic separator comprising a flexible member
WO2013151415A1 (en) * 2012-04-03 2013-10-10 Spiro Enterprises B.V. Fluid circulation system for circulating an amount of fluid comprising a magnetic separator for separating suspended particles having ferromagnetic properties
GB2504259A (en) * 2012-05-15 2014-01-29 Scalemaster Ltd Magnetic sludge filter
GB2504919A (en) * 2012-05-15 2014-02-19 Scalemaster Ltd Magnetic sludge filter
EP2664382A3 (en) * 2012-05-15 2017-01-04 Scalemaster Limited Magnetic sludge filter
CN103480489A (en) * 2012-06-15 2014-01-01 宝山钢铁股份有限公司 Apparatus for removing iron powder adsorbed by constant magnetic plate
CN103506217A (en) * 2012-06-22 2014-01-15 中山天贸电池有限公司 Slurry demagnetizing device for battery production
WO2018065779A1 (en) * 2016-10-05 2018-04-12 Romar International Limited Apparatus and method for removing magnetic particles from liquids and slurries
CN112090585A (en) * 2020-09-08 2020-12-18 阜阳德润磁材科技有限公司 Magnetic particle processing doffer
CN112090585B (en) * 2020-09-08 2022-04-12 阜阳德润磁材科技有限公司 Magnetic particle processing doffer
CN112676033A (en) * 2020-12-31 2021-04-20 宁波伊玛机械工业有限公司 Liquid removes iron fillings device
CN116140055A (en) * 2023-01-03 2023-05-23 宁波西磁科技发展股份有限公司 High-viscosity slurry electromagnetic iron remover

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