Abstract: A filter device for fluids, in particular for low viscosity fluids such as water, includes a filter housing (1) in which element holders (31) are provided for a plurality of filter elements (21). Filter medium (35) of each filter element in the filter housing (1) separates an unfiltered side (5) from a clean side (7). The filter housing (1) can be opened for inserting and removing the filter elements (21). A carrier in the form of a basket (19) is provided for the filter elements (21). The basket can be inserted into and removed from the filter housing (1). The filter elements (21) can be releasably secured at the basket.

Abstract: A switching apparatus for a fluid flow with a first fluid-conducting connection (5) and a second fluid-conducting connection (6) between first and second treatment devices (3, 4) has a first pair of switching levers (11, 12) assigned to first and second distributor valves (7, 8) and a second pair of switching levers (15, 16) assigned to third and fourth distributor valves (13, 14) arranged in different planes. The switching levers (11, 12) of the first pair can be actuated by an operator without obstruction with the switching levers (15, 16) of the second pair, and vice versa.

Abstract: A vessel, particularly a pressure vessel, has a tubular housing part (10) in which a cover part (12) can be secured. Support segments (18) are inserted at least in some areas in a recess (14) on the interior (16) of the housing part (10). These segments provide support to the cover part (12) when it is installed. At least one fixing device (22) ensures a releasable engagement between cover part (12) and at least one of the support segments (18).

Abstract: A filter device for fluids, in particular for low viscosity fluids such as water, comprising a filter housing (1) in which element holders (31) are provided for a plurality of filter elements (21), whose filter medium (35) in the filter housing (1) separates an unfiltered side (5) from a clean side (7), wherein the filter housing (1) can be opened for the purpose of inserting and removing the filter elements (21), is characterized in that a carrier in the form of a basket (19) is provided for the filter elements (21), said basket can be inserted into and removed from the filter housing (1), and the filter elements (21) can be releasably secured at said basket.

Abstract: A filtering apparatus with a plurality of filtering elements (11) which can be accommodated in a filter housing (1) having a filter inlet (7) for fluid to be filtered and a filter outlet (9) for the filtered fluid, wherein during the filtration operation, at least one of the filtering elements (11) can be back-flushed by means of a back-flushing device (45, 49) in order to dedust the effective filtering surface of said filtering element, the back-flushing device comprising a pressure control device (19) for assisting the back-flushing operation, is characterized in that the pressure control device comprises a hydraulic accumulator (19), the one fluid chamber (47) of which can be filled during the filtration operation with a quantity of dedusted fluid and can be connected for a back-flushing operation via a back-flushing guide (45) to the clean side (29) of the filtering element (11) to be dedusted, and in that, for a back-flushing operation, a further fluid chamber (48) of the hydraulic accumulator (19) can b

Abstract: A system for purifying as includes at least one housing (2) having a first chamber (6) into which the gas to be purified can flow, and a second chamber (10) forming a filter chamber, out of which the purified gas exits and with a filter device through which the gas can flow. The filter device has filter media (54) for separating out solid particles and for dehumidifying the gas for precipitating coalesced fluid. The first chamber (6) has a cyclone (60) for pre-dehumidifying the gas, from which dirt particles and fluids can be discharged into a third chamber (14) of the housing (2). The housing (2) is composed of an upper housing part (8) with the second chamber (10) forming the filter chamber, a middle housing part (4) with a first chamber (6) having the cyclone (60), and a lower housing part (12) forming the third chamber (14), that can be clamped together by at least one tensioning bolt (32), forming a closed pressure vessel.

Abstract: The invention relates to a filter device comprising at least one filter housing (1) in which at least one filter element (21) is arranged. Inside the filter housing (1), the filter element separates a clean side (9) from an untreated side (13). The device is characterised in that, on the clean side (9) of the respective filter housing (1) at least one storage unit (3) having at least one movable separating element (47) is connected, which divides the storage unit (3) into two working chambers (49) or pressure chambers (43).

Abstract: A filter device operating method involves a plurality of filter elements (21) received in a filter housing having a filter inlet for a fluid to be filtered and a filter outlet for the filtered fluid. Flow through the filter elements (21) is possible in both directions for filtration or backwashing. Because the shut-off element (41) is a fast-closing plate valve (43) actuated by a hydraulic piston (53) and blocks the fluid connection so quickly, a feeding effect is created in the manner of a pressure blow on the backwashed filter element (21). The feeding effect increases the cleaning of pollution on the filter element (21), achieving an improved backwashing cleaning.

Abstract: A filter device for the insertion of filter elements (28) to be positioned in a filter housing (10) having a filter inlet (20) and a filter outlet (22) for the fluid to be filtered. The filter elements (28) are traversed in both directions for filtration or backwashing. Certain filter elements (28) perform the filtration in a filtration position and at least one additional filter element (28) can be backwashed in a backwashing position to clean its active filtration surface. As the individual filter elements (28) are brought into the backwashing position and are then returned to their filtration position in succession by a pivoting device (30), the filter elements are individually displaced into the backwashing position in a temporal sequence, in contrast to prior art, where an arm-type backwashing device is pivoted towards the individual filter elements to carry out the backwashing process.

Abstract: A filter device includes a plurality of filter elements (21) received in a filter housing having a filter inlet for a fluid to be filtered and a filter outlet for the filtered fluid. Flow through the filter elements (21) is possible in both directions for filtration or backwashing. Because the shut-off element (41) is a fast-closing plate valve (43) actuated by a hydraulic piston (53) and blocks the fluid connection so quickly, a feeding effect is created in the manner of a pressure blow on the backwashed filter element (21). The feeding effect increases the cleaning of pollution on the filter element (21), achieving an improved backwashing cleaning.

Abstract: A fluid system for a pump circuit (10), in particular a hydraulic high-pressure pump circuit, has a function block (12). In the housing of the function block, fluid-conducting paths extend and are connected to valve components (32, 46) at least partially. A filter device is an at least partially integrated constituent part of the function block of the fluid system. The filter device (46) with its filter housing (56) can be connected to the function block (12) such that at least one filter element (70) is received in the installation space (72) of the function block.

Abstract: The invention relates to a system for purifying gas, comprising at least one housing (2) comprising a first chamber (6) into which the gas to be purified can flow, and a second chamber (10) forming a filter chamber, out of which the purified gas exits and comprising a filter device through which the gas can flow having filter media (54) both for separating out solid particles and for dehumidifying the gas for precipitating coalesced fluid, the first chamber (6) comprising a cyclone (60) for pre-dehumidifying the gas, from which dirt particles and fluids can be discharged into a third chamber (14) of the housing (2), characterized in that the housing (2) is composed of an upper housing part (8) comprising the second chamber (10) forming the filter chamber, a middle housing part (4) comprising a first chamber (6) having the cyclone (60), and a lower housing part (12) forming the third chamber (14), that can be clamped together by means of at least one tensioning bolt (32), forming a closed pressure vessel.

Abstract: A filter apparatus deposits impurities from a fluid stream by use of a filter element (10) accommodated in a filter casing (12). The filter casing (12) has a swirl space (14) such that the fluid stream to be filtered is conducted at least partly in a swirling flow around the filter element (10). The properties of a cyclone are utilized for the actual filtration operation to the extent that the swirl space of the filter casing brings about multiple deflection of the direction of motion of the fluid to be filtered.

Abstract: A system for gas cleaning has at least one casing (1) with a first chamber (31) into which the gas to be cleaned can be flowed and with a second chamber (33) from which the cleaned gas exits. A filter device (35) can have the gas flow through it and can be arranged between the chambers. The filter device has filter media both for the separation of solid particles and for dehumidifying the gas by separating out coalesced liquid. The system has, upstream of the filter device (35), an arrangement (11, 37) for preliminary dehumidification of the gas.

Abstract: The invention relates to a filter device, comprising a plurality of filter elements (21), which can be received in a filter housing having a filter inlet for a fluid to be filtered and a filter outlet for the filtered fluid, wherein flow through the filter elements (21) is possible in both directions for filtration or backwashing. Because the shut-off element (41) is a fast-closing plate valve (43), which can be actuated by means of a hydraulic piston (53) and blocks the fluid connection mentioned above so quickly that a feeding effect is created in the manner of a pressure blow on the backwashed filter element (21), said feeding effect increasing the cleaning of pollution on the filter element (21), an improved backwashing cleaning is achieved.

Abstract: A filter installation and method, especially a seawater filter installation and method, includes at least one fluid line (18,20) for transporting a biological fluid, a filter device (54) mounted in the fluid line with at least one filter element (22) in a filter housing (10), and a device for biological decontamination. The device for biological decontamination contains active substances that can be introduced into the filter housing (10), such as inert gases or special metals, ensuring that toxic impurities cannot enter. The active substances used are ecofriendly unlike chemically produced fungicides and herbicides.

Abstract: A filter device includes a filter housing (10), a filter inlet (12), a filter outlet (14), and a filter element (16). The filter element divides a filter area (18) into two partial areas (20, 22). One partial filter areas is conical in form with the cross-section of that partial area (20) being tapered from the filter inlet (12) to the filter outlet (14). The partial areas are separated from each other by the filter element. This arrangement results in an optimum residence time distribution inside the filter device at a uniform flow rate, which is particularly useful for highly viscous fluids such as polymer melts or similar.

Abstract: A filter device, in particular, for high-pressure applications in a molten polymer filtration, has a screw-in piece (10), provided with a first threaded section (12) for fixing the filter device, and a second threaded section (14) for fixing a filter medium (16), in particular, in the form of a metal wool and with a perforated support tube (18) for the metal wool. The other free end of the filter device is provided with a volume displacer (24). The metal wool is surrounded by a support grid (20) and fixed by two fixing pieces (28, 30), held at a separation from each other by the support grid (20). One fixing piece (28) is fixed to the second threaded section (14) of the screw-in piece (10). The other fixing piece forms a handle (30) for the fixing formed.

Abstract: The invention relates to a separating device, particularly for separating solids from liquids, preferably from the quantity of reverse flow of a reverse flow filter system. The separating device comprises: a spinning screen provided in the form of a drum screen (17) having an annular screen wall (21); a spray tube (15), which supplies the liquid to the drum screen (17) and which, with regard to its opening (26) to the inside of the screen wall (21) of the drum screen (17), extends in an at least approximately tangential manner thereto in order to produce a spinning flow of the liquid on the screen wall (21); a housing (19) that surrounds the drum screen (17) while serving to hold the liquid passing through said screen wall (21), and; an exit (29) located at the bottom (27) of the drum screen (17) while serving to discharge the separated substances.

Abstract: A process for production of conical filter elements, in particular slotted tube filter elements, includes forming a support structure of a plurality of support rods around which is wound at least one wire profile in individual turns. Slots are left clear in the wire profile through which a fluid may pass. The wire profile is, at least in part, rigidly connected to the support rods and is enclosed in a screen grid. The screen grid, at least in part, rests against the wire profile, follows to the same extent the conical path of the filter element, and is provided on its ends with end components. Since the conical screen grid is in the form of a one-piece pull-on part fitted on the support structure and since the pull-on part is designed to be longer than the support structure, after the screen grid has been pulled onto the support structure, at least one projecting length of the screen grid may be separated for precision fitting and is connected to the respective end component of the filter element.