FR2631851A1 - Filter casing, especially for a confinement enclosure - Google Patents
Filter casing, especially for a confinement enclosure Download PDFInfo
- Publication number
- FR2631851A1 FR2631851A1 FR8807038A FR8807038A FR2631851A1 FR 2631851 A1 FR2631851 A1 FR 2631851A1 FR 8807038 A FR8807038 A FR 8807038A FR 8807038 A FR8807038 A FR 8807038A FR 2631851 A1 FR2631851 A1 FR 2631851A1
- Authority
- FR
- France
- Prior art keywords
- sleeve
- seal
- cover
- housing
- filter
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0004—Details of removable closures, lids, caps or filter heads
Abstract
Description
Boitier de filtre, notamment pour enceinte de confinement.Filter housing, especially for containment.
L'invention concerne un boiter de filtre raccordé à un circuit de filtration d'air, et notamment à une enceinte de confinement. The invention relates to a filter box connected to an air filtration circuit, and in particular to a confinement enclosure.
De tels filtres, montés sur l'admission ou l'extraction d'air, sont connus. Pour permettre le changement de l'élément filtrant sans arrêter l'extraction d'air et sans provoquer de rupture d'étanchétté entre le# réseau d'extraction d'air et l'extérieur, ils comportent un manchon ouvert d'introduction et d'enlèvement de
L'élément filtrant, manchon cylindrique sur lequel peut s'adapter une manchette souple de changement de l'élément filtrant. Le manchon est fermé par un couvercle coopérant, en vue de- l'etan- chéité de la fermeture, avec un joint torique radial interposé entre la surface latérale du manchon et un bord intérieur cylindrique du couvercle.Pour assurer correctement la fonction d'étan chéité, le positionnement du joint et des surfaces avec lesquelles il coopère nécessite un usinage délicat. D'autre part, lorsque le joint vieillit, il peut devenir plus ou moins collant et empêcher d'ouvrir facilement le couvercle; il risque de se détériorer et de ne plus assurer l'étanchéité.Such filters, mounted on the air intake or extraction, are known. To allow the filter element to be changed without stopping the air extraction and without causing a seal break between the # air extraction network and the outside, they include an open introduction sleeve and d 'removal of
The filter element, cylindrical sleeve on which a flexible sleeve for changing the filter element can be fitted. The sleeve is closed by a cooperating cover, in view of the sealing of the closure, with a radial O-ring interposed between the lateral surface of the sleeve and a cylindrical inner edge of the cover. stiffness, the positioning of the seal and the surfaces with which it cooperates requires delicate machining. On the other hand, when the seal ages, it can become more or less sticky and prevent the lid from being opened easily; it may deteriorate and no longer provide a seal.
Le but de l'invention est de proposer un boîtier de filtre exempt de ces inconvénients, de construction simple, et où le couvercle est facilement amovible. The object of the invention is to provide a filter housing free from these drawbacks, of simple construction, and where the cover is easily removable.
Ce but est atteint selon l'invention grâce au fait que le couvercle comporte un fond que des moyens de fixation amovible appliquent sur la bordure frontale du manchon par l'intermédiaire d'un joint d'étanchéité, avantageusement annulaire et en mousse de silicone. De la sorte, il est toujours facile d'enlever le couvercle pour changer le filtre. This object is achieved according to the invention thanks to the fact that the cover has a bottom which removable fixing means apply to the front edge of the sleeve by means of a seal, advantageously annular and made of silicone foam. In this way, it is always easy to remove the cover to change the filter.
Avantageusement, le couvercle est uniquement constitué du fond et d'une simple paroi cylindrique raccordée au fond, qu'il est aisé d'obtenir par emboutissage. Advantageously, the cover only consists of the bottom and a simple cylindrical wall connected to the bottom, which is easy to obtain by stamping.
Les moyens de fixation amovible sont de préférence montés sur la paroi cylindrique : ils peuvent notamment être constitués par un verrou à grenouillère coopérant avec un relief prévu sur le carter du boîtier. The removable fixing means are preferably mounted on the cylindrical wall: they can in particular be constituted by a latch bolt cooperating with a relief provided on the casing of the housing.
D'autres caractéristiques et avantages ressortiront de la description suivante faite en se référant à la figure unique annexée représentant en vue de côté et coupe partielle un exemple de réalisation de l'invention. Other characteristics and advantages will emerge from the following description made with reference to the single appended figure representing in side view and partial section an embodiment of the invention.
Le boiter de filtre comporte un carter 10 d'acier inoxydable destiné à recevoir le filtre 11. Une pièce de jonction 12 permet de raccorder le boîtier sur l'enceinte de confinement, par vissage, soudage ou tout autre moyen. Une sortie latérale 13 raccorde le boîtier au réseau d'extraction d'air. The filter housing comprises a stainless steel casing 10 intended to receive the filter 11. A junction piece 12 makes it possible to connect the housing to the confinement enclosure, by screwing, welding or any other means. A lateral outlet 13 connects the housing to the air extraction network.
A sa partie supérieure, le boîtier comporte un manchon 14 d'acier inoxyda#ble s'adaptant et soudé sur le périmètre d'un bord 15 arrondi extérieurement. Des nervures circonférentielles 16 sont formées sur la surface latérale extérieure du manchon 14 pour l'accrochage des bords 24 des sacs 25 de changement de filtre. At its upper part, the housing comprises a sleeve 14 of stainless steel # ble adapting and welded on the perimeter of an edge 15 rounded on the outside. Circumferential ribs 16 are formed on the outer lateral surface of the sleeve 14 for hooking the edges 24 of the filter change bags 25.
La bordure frontale du manchon 14 est formée par un bord 17 arrondi intérieurement. The front edge of the sleeve 14 is formed by an edge 17 rounded internally.
Le couvercle 18 comporte un disque de fond 19 se raccordant à une paroi cylindrique 20 sur laquelle sont prévus des moyens de fixation amovible 21 constitués par une paire de grenouillères dont la patte de traction 22 s'appuie, par une partie recourbée, å t'arrière du bord 15 et serre le fond 19 du couvercle 18 sur le bord 17 du manchon 14, avec interposition d'un joint d'étanchéité 23 en silicone mousse, mis en place par adhérisation après sablage du support 19, 20 pour assurer une étanchéité parfaite entre le joint 23 et le support. On voit qu'une épaisseur du sac 25 est également interposée entre le joint 23 et le bord 17, ce qui a pour avantage de laisser le bord 24 du sac hors d'atteinte de la contamination du filtre. De plus, l'élasticité du joint 23 est choisie telle qu'aucun risque de cisaillement du sac n'est à craindre. The cover 18 comprises a bottom disc 19 connecting to a cylindrical wall 20 on which are provided removable fixing means 21 constituted by a pair of latches whose pull tab 22 rests, by a curved part, å t ' back of the edge 15 and tightens the bottom 19 of the cover 18 on the edge 17 of the sleeve 14, with the interposition of a seal 23 made of foam silicone, put in place by adhesion after sandblasting of the support 19, 20 to ensure a seal perfect between seal 23 and support. We see that a thickness of the bag 25 is also interposed between the seal 23 and the edge 17, which has the advantage of leaving the edge 24 of the bag out of reach of contamination of the filter. In addition, the elasticity of the seal 23 is chosen such that no risk of shearing of the bag is to be feared.
Dans l'épaisseur de la pièce de jonction est avantageusement prévu un orifice 26, bouchonnable, dont l'alésage terminal 28 aboutit dans la zone de pression amont, ainsi qu'un orifice 29 dont l'alésage terminal 30 aboutit dans la zone de pression aval 27, permettant les prises de pression à l'aide d'un manomètre et le contrôle du colmatage de l'élément filtrant. In the thickness of the junction piece is advantageously provided a plugable orifice 26, the terminal bore 28 of which ends in the upstream pressure zone, as well as an orifice 29 whose terminal bore 30 terminates in the pressure zone downstream 27, allowing the pressure taps using a pressure gauge and checking the clogging of the filter element.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8807038A FR2631851A1 (en) | 1988-05-26 | 1988-05-26 | Filter casing, especially for a confinement enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8807038A FR2631851A1 (en) | 1988-05-26 | 1988-05-26 | Filter casing, especially for a confinement enclosure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2631851A1 true FR2631851A1 (en) | 1989-12-01 |
Family
ID=9366662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8807038A Pending FR2631851A1 (en) | 1988-05-26 | 1988-05-26 | Filter casing, especially for a confinement enclosure |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2631851A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1380871A (en) * | 1963-12-31 | 1964-12-04 | Knecht Filterwerke Gmbh | Device for holding an interchangeable filter cartridge in a two-part filter housing |
| DE2412051A1 (en) * | 1973-03-10 | 1974-11-07 | Gen Motors Ltd | AIR FILTER HOUSING MADE OF PLASTIC |
| FR2261041A1 (en) * | 1974-02-18 | 1975-09-12 | Cfea |
-
1988
- 1988-05-26 FR FR8807038A patent/FR2631851A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1380871A (en) * | 1963-12-31 | 1964-12-04 | Knecht Filterwerke Gmbh | Device for holding an interchangeable filter cartridge in a two-part filter housing |
| DE2412051A1 (en) * | 1973-03-10 | 1974-11-07 | Gen Motors Ltd | AIR FILTER HOUSING MADE OF PLASTIC |
| FR2261041A1 (en) * | 1974-02-18 | 1975-09-12 | Cfea |
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