An inherently stable, throughflow-porous filter element for filtering foreign substances from a gas stream, comprising a filter body of plastic and having an inflow side and an opposite outflow side, wherein a surface filtration layer is formed on the inflow side, wherein the filter body has a three-dimensional support structure manufactured in an additive manufacturing process, said support structure having cavities through which gas can flow from the inflow side to the outflow side, and wherein the surface filtration layer at least partially fills the cavities of the three-dimensional support structure.
A filter device including at least one filter element adapted to filter a raw fluid and having a raw fluid side and a clean fluid side, the filter element having a clean fluid outlet arranged on the clean fluid side and extending in a first plane, at least one clean fluid collecting channel into which the clean fluid outlet opens; at least one compressed-air cleaning-off device adapted to generate a pressure pulse for cleaning-off foreign matter adhering to the filter element and to conduct the same through the clean fluid outlet to the filter element, wherein the compressed-air cleaning-off device is adapted to conduct the pressure pulse at least approximately along the first plane to the clean fluid outlet, wherein the compressed-air cleaning-off device comprises a compressed-air supply channel operationally coupled to a clean fluid collecting channel outlet and adapted to charge the clean fluid collecting channel with pressure pulses.
B01D 46/71 - Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B01D 46/44 - Auxiliary equipment or operation thereof controlling filtration
B01D 46/62 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
3.
Filter Element With Gasket Surrounding Filter Head
A filter element including a throughflow-porous filter body extending between a head end and a longitudinally opposite foot end, wherein a head structure is formed at the head end of the filter element, the head structure having at least one seal configured to seal the filter element with respect to a filter element holder, wherein the head structure has a sidewall extending basically in the longitudinal direction and the seal is formed on the basically longitudinally extending sidewall of the head structure of the filter element.
To provide a manufacturing method of a filter element in which fine particles constituting a dust-collecting layer are not peeled off and high performance is maintained over a long period of time even when the filter element is scaled up. A layer of fine particles containing low melting point fine particles and small diameter fine particles is deposited and formed on the surface of a filter element material while sucking the filter element material, and the layer of the fine particles is heated by a heating means exemplified by an infrared heater and an oven to sinter the fine particles to form a dust-collecting layer.
A method and a filter device for the dry filtration of a gas flow carrying foreign objects in a filter device for purifying waste gas produced in additive manufacturing technologies, conducting a raw gas flow containing foreign objects into a raw gas space of a filter unit having at least one filter surface separating a raw gas side from a clean gas side, feeding oxidant to a reaction region located on the raw gas side of the filter surface downstream of the filter surface, such that foreign objects contained in material cleaned off from the filter surface and/or in the raw gas flow react with the oxidant in the reaction region to form foreign objects containing oxides.
A method for the dry filtration of a gas flow carrying foreign objects, a filter device for cleaning off waste gas resulting from additive manufacturing technologies, comprises feeding a raw gas flow containing foreign objects into a raw gas space of a filter unit having at least one filter surface separating a raw gas side from a clean gas side; feeding oxidant to a reaction region located on the raw gas side of the filter surface downstream of the filter surface; such that foreign objects contained in material cleaned off from the filter surface and/or in the raw gas flow react with the oxidant in the reaction region to form oxide-containing foreign objects.
B01J 20/10 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
B01J 20/04 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
7.
INHERENTLY STABLE, FLOW-POROUS FILTER ELEMENT AND METHOD FOR PRODUCING SUCH A FILTER ELEMENT
Described is an inherently stable, flow-porous filter element for filtering foreign substances out of a gas flow, comprising a filter element made of plastic having an inflow side and an opposite outflow side, wherein: a surface filtration layer is formed on the inflow side; the filter element has a three-dimensional support structure produced in an additive manufacturing process, said support structure having cavities through which gas can flow from the inflow side to the outflow side; and the surface filtration layer at least partially fills the voids in the three-dimensional support structure.
The invention relates to a method and a filter device for the dry filtration of a gas flow that carries foreign bodies, in particular in a filter device for purifying waste gas produced in additive manufacturing techniques, said method comprising: conducting a crude gas flow (44) containing foreign bodies into a crude gas chamber (15) of a filter unit (12), which has at least one filter surface separating a crude gas side from a clean gas side; feeding an oxidant into a reaction region (24), which lies downstream of the filter surface on the crude gas side, such that foreign bodies contained in the material cleaned from the filter surface and/or the crude gas flow react with the oxidant in the reaction region (24) to form foreign bodies containing oxides.
A dry filtration process for a gas flow (44) that carries foreign bodies, in particular in a filter device for purifying waste gas produced in additive manufacturing techniques, said process comprising: feeding a crude gas flow (44) containing foreign bodies into a crude gas chamber (15) of a filter unit, which has at least one filter surface separating a crude gas side from a clean gas side; feeding an oxidant (112) into a reaction region, which lies downstream of the filter surface on the crude gas side, such that foreign bodies contained in the material cleaned from the filter surface and/or the crude gas flow (44) react with the oxidant (112) in the reaction region to form foreign bodies containing oxides.
A dry filtration process for a gas flow (44) containing foreign bodies, in particular in a filter device for purifying waste air arising from additive manufacturing techniques, said process comprising: feeding an untreated-gas flow (44) containing foreign bodies into an untreated-gas chamber (15) of a filter unit having at least one filter surface; feeding an auxiliary filtration substance into the untreated-gas flow (44) and/or to the filter surface; wherein the auxiliary filtration substance has a configuration that allows the suppression of a reaction of the foreign bodies with an oxidizing agent, in particular oxygen; and wherein the auxiliary filtration substance is a silica-based inorganic material.
The invention relates to a filter element (2) having a throughflow-porous filter body (4) that extends between a head end and a longitudinally opposite foot end; wherein at the head end of the filter element (2) there is formed a head structure (6) which has at least one bearing face seal (10) which is designed to seal the filter element (2) with respect to a filter element holder (26), wherein the head structure (6) has a side wall (8) running essentially in the longitudinal direction and the bearing face seal (10) is formed on this essentially longitudinal side wall (8) of the head structure (6) of the filter element (2).
The present invention relates to a filter device having: at least one filter element designed to filter a dirty fluid, having a dirty fluid side and a clean fluid side, which filter element has a clean fluid outlet which is arranged on the clean fluid side, extends in a first plane, and through which clean fluid is conducted out of the filter element; and at least one compressed-air cleaning device, which is designed to generate a pressure pulse for removing foreign substances adhering to the filter element and to conduct them through the clean fluid outlet to the filter element, the compressed-air cleaning device being designed to conduct the pressure pulse at least approximately along the first plane to the clean fluid outlet.
The invention relates to a method for producing a coated filter element (2), comprising the following steps: providing a filter body (4); and thermal spraying of a plastic material (30) onto the filter body (4) by means of an application device (32) such that the thermally sprayed plastic material (30) forms a porous and fluid-permeable surface filtration layer (28) on the filter body (4). The invention also relates to a correspondingly produced filter element.
C23C 4/04 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
B05B 7/20 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating the material to be sprayed by flame or combustion
B05D 3/02 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
The invention relates to a filter element having inherent stability and being porous to permit flow therethrough, comprising a filter body which forms a porous sintered structure and is constructed with filter body particles which are at least in part polysulfide particles. In addition, the invention relates to a method of manufacturing such a filter element.
The invention relates to an inherently stable, flow-porous filter element (1), comprising: a porous filter body (2), which is additively manufactured from plastic, is inherently stable and has an inflow side (8) and an outflow side (9); and a surface filtration layer (14) on the inflow side (8) of the filter body (2). The invention also relates to a method for producing an inherently stable, flow-porous filter element (1), the method comprising: manufacturing a porous filter body (2) from plastic, which filter body is inherently stable and has an inflow side (8) and an outflow side (9), by means of an additive manufacturing method; and forming a surface filtration layer (14) on the inflow side (8) of the filter body (2).
B01D 29/11 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
B01D 29/33 - Self-supporting filtering elements arranged for inward flow filtration
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
B01D 46/24 - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
The invention relates to an inherently stable flow-porous filter element (30) having a filter body (20) that forms a porous sintered structure and is made up of filter body particles (10, 14) at least some which are polysulphide particles. The invention also relates to a method for producing such a filter element.
A filter device is proposed for cleaning gas entraining foreign bodies, including at least one filter unit having at least one filter surface on a raw gas side to which a raw gas stream containing foreign bodies can be supplied, wherein filtration aids can be supplied to the raw gas stream and/or the filter surface, and wherein filtration aids and/or foreign matter attached to the filter surface can be cleaned off. The filter device additionally includes a fluidized bed arrangement in which a carrier fluid stream can be generated such that cleaned-off filtration aids and/or foreign matter can be held at least in part as filtration aerosol in a surrounding of the filter unit and/or can re-attach to a filter surface.
A filter device (10) is proposed for cleaning gas entraining foreign bodies, comprising: at least one filter unit (12) having at least one filter surface on a dirty gas side, to which filter surface a dirty gas stream (44) containing foreign bodies can be fed, wherein filtration aids can be fed to the dirty gas stream (44) and/or the filter surface, and wherein filtration aids and/or foreign matter attached to the filter surface can be cleaned off. The filter device (10) additionally comprises a fluid bed arrangement (55) in which a carrier fluid stream (54) can be generated, in such a manner that filtration aids and/or foreign matter that are cleaned off can at least in part be held as filtration aerosol in a surrounds of the filter unit (12) and/or can be reattached to a filter surface.
Air-filtering apparatus, gas, Exhaust gases and liquids; Structural parts for the aforesaid filtering apparatus; Filter elements for insertion into the aforesaid filtering apparatus.
Heat-resistant, flow-porous, intrinsically stable filter element comprising: (a) an intrinsically stable base body (4) formed from hollow glass beads and/or hollow ceramic beads (10) which are held together by thermoset plastic (12); (b) and a coating (6) with smaller pore size than the base body (4) on the inflow surface of the base body (4), which coating (6) is formed by glass beads (14) which are held together by thermoset plastic.
An inherently stable, flow-porous filter element (2) having a porous coating (10) for surface filtration on its afflux surface, said coating (10) comprising:(a) a main component of particles (12) and/or fibers (22);(b) an inorganic binder component (14; 24) binding the particles (12) and/or the fibers (22) of the main component to each other;(c) an adhesive (16; 26) binding the porous coating (10) to the remainder of the filter element;(d) and an anti-adhesion component (18; 28) mitigating the adhesion of filtered out material to the porous coating and facilitating cleaning of the filter element.
01 - Chemical and biological materials for industrial, scientific and agricultural use
11 - Environmental control apparatus
Goods & Services
Holders for micro-organisms compatible with apparatus mentioned in class 11 (bioreactors). Filter apparatus for air, gases, waste gases and liquids, structural parts for the aforementioned filter apparatus, filter elements compatible with the aforementioned filter apparatus; apparatus (bioreactors) for the biological cleaning of liquids, waste water, gases and air waste, structural parts for the aforementioned apparatus, holders for micro-organisms compatible with the aforementioned apparatus.
01 - Chemical and biological materials for industrial, scientific and agricultural use
11 - Environmental control apparatus
Goods & Services
Vectors for microorganisms for the apparatus and devices
listed in class 11. Filtering devices for air, gases, exhaust gases, and
liquids, component parts of the aforesaid filtering devices,
filtering elements for incorporation in the aforesaid
filtering devices; apparatus (bioreactors) for biological
purification of liquids, effluents, gases and exhaust air
and parts thereof.
01 - Chemical and biological materials for industrial, scientific and agricultural use
11 - Environmental control apparatus
Goods & Services
[ carrier elements for microorganisms for mounting in bioreactors and biological purification apparatus ] filtering units for purifying air, gases, exhaust gas [ and liquids, ] and parts therefor; [ bioreactors for biologically purifying liquids, sewage, gases and discharged air, and parts therefor; ] filter elements for mounting in filtering units for filtering air, gases, exhaust gases [ and liquids; carrier elements for microorganisms for mounting in bioreactors ]
