Abrégé

The invention relates to a filtering device for highly viscous fluids, having at least two parallel screen plungers which are arranged in a displaceable fashion in screen plunger bores of a housing and which have in each case at least one screen cavity in which at least one filter element is arranged, wherein the housing has an inflow opening from which, on the untreated side, at least one flow duct leads to each screen plunger bore, and the housing has at least one flow duct which, on the clean side, leads from each screen plunger bore to an outflow opening. On the untreated side and/or on the clean side, in each case one common flow duct leads rectilinearly along both screen plunger bores and, in a production position, tangentially intersects the screen cavities.

Classes IPC  ?

• B01D 33/01 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à éléments filtrants mobiles en translation, p. ex. pistons
• B29C 47/68 - Filtres
• B29C 47/00 - Moulage par extrusion, c. à d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désirée; Appareils à cet effet (moulage par extrusion-soufflage B29C 49/04)

Abrégé

The invention relates to a filtering device (100) comprising: a filter support element (10) which is movably mounted in the housing (30), which has the shape of a cylindrical bolt, and which has multiple filter chambers (11.1, 11.2; 12.1, 12.2), a filtering element being arranged in each said filter chamber; and an inlet channel (31.1, 31.2 32.1, 32.2) and an outlet channel (41.1, 41.2; 42.1, 42.2) in the housing (30), wherein the inlet channel and the outlet channel are each to be connected to at least one filter chamber in a production position. The aim of the invention is to increase the effective filtering surface. This is achieved in that at least two pairs of filter chambers are provided on the filter support element. The filter chambers of each pair are arranged on the filter support element in a diametrically opposed manner, and there are no connections between the filter chambers within the filter support element. At least one respective intermediate channel (13.1, 13.2, 14.1, 14.2) that extends in the direction of the longitudinal axis (19) of the filter support element (10) is provided between the outlet channels in the housing and the filter chambers. Intermediate channels of different lengths are provided for each pair of filter chambers.

Classes IPC  ?

• B29C 47/68 - Filtres
• B29C 47/08 - Eléments constitutifs, détails ou accessoires; Opérations auxiliaires

Abrégé

The invention relates to a filtering device (100) for highly viscous fluids, having at least two parallel screen plungers (11, 11') which are arranged in a displaceable fashion in screen plunger bores of a housing (10) and which have in each case at least one screen cavity (13; 13') in which at least one filter element (14, 14') is arranged, wherein the housing (10) has an inflow opening (21) from which, on the untreated side, at least one flow duct (22) leads to each screen plunger bore, and said housing has at least one flow duct (32) which, on the clean side, leads from each screen plunger bore to an outflow opening (31). On the untreated side and/or on the clean side, in each case one common flow duct (22, 32) leads rectilinearly along both screen plunger bores and, in a production position, tangentially intersects the screen cavities (13; 13').

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 29/52 - Filtres à éléments filtrants stationnaires pendant la filtration, p. ex. filtres à aspiration ou à pression, non couverts par les groupes Leurs éléments filtrants à plusieurs éléments filtrants caractérisés par leur agencement relatif montés en parallèle
• B01D 35/12 - Dispositifs pour mettre hors service une ou plusieurs unités dans des filtres à unités multiples, p. ex. pour la régénération
• B29C 47/68 - Filtres
• B01D 29/66 - Rinçage par chasse, p. ex. rafale ascendante d'air à contre-courant

Abrégé

The invention relates to a filtering device (100) for high-viscosity fluids, having a partial channel (34) in the housing (30) and a displacing piston (40), which can be inserted into the partial channel (34, 35). The displacing piston (40) comprises at least one inner fluid line (42), which extends from an inlet opening (41) to an outlet opening (43) on the circumference. The outside diameter of the displacing piston (40) corresponds to the inside diameter of the partial channel (34, 35). The displacing piston (40) can be positioned in a production position with the outlet opening (43) of said displacing piston in front of the opening of the discharge channel (33) into the partial channel (34, 35) and can be pulled back to a backflushing initial position within the partial channel (34), wherein along a backflushing displacement path, the opening of the discharge channel (33) into the partial channel (35) is covered by the outer wall of the displacing piston (40) and/or the outlet opening (43) of the displacing piston (40) is covered by the inner wall of the partial channel (34).

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 29/52 - Filtres à éléments filtrants stationnaires pendant la filtration, p. ex. filtres à aspiration ou à pression, non couverts par les groupes Leurs éléments filtrants à plusieurs éléments filtrants caractérisés par leur agencement relatif montés en parallèle
• B01D 29/66 - Rinçage par chasse, p. ex. rafale ascendante d'air à contre-courant

Abrégé

The invention relates to a filter element (100) for filtering a fluid comprising at least: a first clamping ring (10) and an outer ring (14), a first filter disk (30), a first inner supporting plate (40) provided with holes for supporting the first filter disk (30), which first inner supporting plate faces the outside or an inner flow channel (102); a second inner supporting plate (40) provided with holes; a second filter disk (30) arranged on the second supporting plate (40), and a second clamping ring (20), which is connected to the first clamping ring (10) by means of connecting elements (21). The filter disks (30) and the inner supporting disks (40) are arranged within a housing, which is formed by the clamping rings (10), at least one outer ring (14), and outer supporting plates (12, 22) provided with holes, which outer supporting plates each cover a respective filter disk (30) on the outside.

Classes IPC  ?

• B01D 29/41 - Filtres à éléments filtrants stationnaires pendant la filtration, p. ex. filtres à aspiration ou à pression, non couverts par les groupes Leurs éléments filtrants à disques creux disposés côte à côte autour de, ou sur, un ou plusieurs tubes, p. ex. du type à panneau filtrant montés de façon transversale sur le tube
• B29C 47/68 - Filtres

Abrégé

A filtering device (100) for highly viscous media comprises at least one screen plug (10) which is movably arranged in a screen plug bore (27) of a housing (20) and which has at least one screen cavity (11, 12), a filter element (11.7) lying in said screen cavity. The screen cavity (11, 12) narrows to a funnel section (11.6) in a rear region when viewed in the flow direction, said funnel section opening into at least one screen plug outlet channel that opens upstream of the housing outlet channel (24, 25) in the production position. According to the invention, the screen plug outlet channel comprises an inlet zone (11.1, 12.1), at least one deflecting point (11.3), and an outlet zone (11.2, 12.2). The intake zone (11.1, 12.1) extends from an edge region of the funnel section (11.6), and the outlet zone (11.2, 12.2) is designed as a groove that extends on the outer face of the screen plug (10; 10') and/or on the inner face of the screen plug bore (27).

Classes IPC  ?

• B29C 47/68 - Filtres

Abrégé

The invention relates to a screen carrier element (100) for a filtration device comprising at least one screen cavity (101), in which at least one filter unit (10) is to be disposed, and a support tube (15) having recesses (15.4) and a plurality of disk filter elements (11), each having a central hub (11.3) with which they are mounted on the support tube (15). A semi-permeable filter medium (11.1) surrounds the hub and is spread out to form a three-dimensional structure. At least one flow channel (11.4) extends in the hub element (11.5) from the main body enveloped by the filter medium (11.1) to the support tube (15), the support tube (15) opening into an outlet channel (102) of the screen carrier element (100). The invention also relates to a filtration device for filtering a fluid.

Classes IPC  ?

• B29C 47/68 - Filtres
• B01D 29/41 - Filtres à éléments filtrants stationnaires pendant la filtration, p. ex. filtres à aspiration ou à pression, non couverts par les groupes Leurs éléments filtrants à disques creux disposés côte à côte autour de, ou sur, un ou plusieurs tubes, p. ex. du type à panneau filtrant montés de façon transversale sur le tube

Abrégé

The invention relates to an arrangement and a device for filtering a fluid, particularly for plastic processing plants, wherein the pressure drop, or the flow rate reduction, created by the withdrawal of material from the process is sensitively balanced in that pressure constancy and flow rate constancy are achieved at the discharge duct (3).

Classes IPC  ?

• B29C 47/68 - Filtres
• B29C 47/92 - Mesure, commande ou régulation