Abrégé

In a centrifugal machine, collecting chambers, which are in a rotary bowl allocated to centrifugal separation of at least two phases, include a discharge port that can be opened or closed as desired by pistons, movement of which is controlled from outside by a reduced-friction system. Drawing volume is adjustable and proportional to volume of a transverse aperture in the pistons, the ports and the openings of the collecting chambers being offset. The machine enables pseudo-continuous drawing which makes it possible to maintain a continuous supply. The drawing volume, composition of the drawn product, and compactness thereof, in a case of a near-solid phase, are controlled.

Classes IPC  ?

• B04B 11/04 - Alimentation ou déchargement cycliqueSystèmes de commande à cet effet
• B04B 1/14 - Centrifugeurs à tambours rotatifs à parois pleines pour la séparation de mélanges essentiellement liquides contenant ou non des particules solides à orifices d'évacuation dans le plan du plus grand diamètre du tambour à évacuation cyclique
• B04B 11/05 - Déchargement par la base
• B04B 11/06 - Disposition des distributeurs ou collecteurs dans les centrifugeurs
• B04B 11/00 - Alimentation, chargement, ou déchargement des tambours

Abrégé

In order to obtain a cake of solid particles recovered from suspensions in a liquid, the particles accumulating behind a filter (15) that the liquid penetrates, the connection to a liquid inlet duct (28) into a cylindrical chamber (30) comprises a diffusor (29) that has divergent channels (31) for expanding the flow and rendering the speed and rate of flow uniform in the section of the chamber (30), promoting in particular the peripheral flow, such that a cake having uniform properties is obtained.

Classes IPC  ?

• B01D 29/01 - Filtres à éléments filtrants stationnaires pendant la filtration, p. ex. filtres à aspiration ou à pression, non couverts par les groupes Leurs éléments filtrants avec des éléments filtrants plats
• B01D 29/90 - Filtres à éléments filtrants stationnaires pendant la filtration, p. ex. filtres à aspiration ou à pression, non couverts par les groupes Leurs éléments filtrants comportant des dispositifs d'alimentation ou d'évacuation d'alimentation
• G01N 33/28 - Huiles

Abrégé

According to the invention, collecting chambers (2), which are in a rotary bowl (1) allocated to the centrifuging separation of at least two phases, are provided with a discharge port (3) which can be opened or closed as desired by pistons (5), the movement of which is controlled from the outside by a reduced-friction system. The drawing volume is adjustable and proportional to the volume of a transverse aperture (16) in the pistons, the ports (3) and the openings of the collecting chambers (2) being offset. Said device enables pseudo-continuous drawing which makes it possible to maintain a continuous supply. The drawing volume, the composition of the drawn product, and the compactness thereof are controlled in the case of a near-solid phase.

Classes IPC  ?

• B04B 1/12 - Centrifugeurs à tambours rotatifs à parois pleines pour la séparation de mélanges essentiellement liquides contenant ou non des particules solides à orifices d'évacuation dans le plan du plus grand diamètre du tambour à évacuation continue

Abrégé

The rotary bowl (1) of this centrifugal separator is lined with conical structures divided into sectors (7) separated by angularly offset gaps (9) so as to promote a regular spiral fluid flow therein, which is laminar and enhances separation efficiency significantly: in the case of two-phase or three-phase suspensions, a “cake” is obtained on the side wall (8). A scraper (15) rotating at a slightly different speed may be added to enable simultaneously routing of the solid cake to the outlet and continuous processing.

Classes IPC  ?

• B04B 1/08 - Centrifugeurs à tambours rotatifs à parois pleines pour la séparation de mélanges essentiellement liquides contenant ou non des particules solides avec cloisons intérieures de forme conique
• B04B 7/14 - Garnitures internes, p. ex. plaques de protection pour parois de séparation de forme conique
• B04B 11/08 - Dispositifs d'écumage ou racleurs, pour l'évacuation
• B04B 11/02 - Alimentation ou déchargement en continuSystèmes de commande à cet effet

Abrégé

The invention relates to a centrifugal separator, the rotating bowl (1) of which is provided with tapered structures divided into sectors (7) separated by angularly offset gaps (9) so as to promote a uniform and spiral flow of fluid therein, said flow being laminar and greatly enhancing the efficiency of the separation. In the case of two-phase or three-phase suspensions, a cake is obtained on the side wall (8). A scraper (15) rotating at a slightly different speed can be added so as to simultaneously enable said solid cake to be directed toward the outlet and continuous operation.

Classes IPC  ?

• B04B 1/08 - Centrifugeurs à tambours rotatifs à parois pleines pour la séparation de mélanges essentiellement liquides contenant ou non des particules solides avec cloisons intérieures de forme conique
• B04B 7/14 - Garnitures internes, p. ex. plaques de protection pour parois de séparation de forme conique