Abstract: The invention relates to a device for a vacuum cleaner filter bag comprising a holding device with a passage opening and a closure device for closing the passage opening of the holding device, wherein the closure device comprises a closure flap and an elastic element made of a cross-linked silicone elastomer, and the elastic element is pretensioned in a state in which the closure flap closes the passage opening of the holding device.

Abstract: A flat-bottomed bag is formed from a flexible sheet that initially is flat prior to being manipulated to form the bag. The sheet is a laminate of a first web and a second web laminated together by an adhesive layer disposed between the webs. The sheet defines a plurality of serially connected side wall panels collectively defining a vertically extending side wall of the bag, and a plurality of bottom panels respectively connected to the side wall panels at respective fold lines. The bottom panels are folded about the fold lines and are attached together to form a flat bottom wall configured to support the bag in an upright orientation. The adhesive layer is in a partial-coverage pattern that includes adhesive-free regions located along each fold line between each bottom panel and the respective side wall panel connected therewith.

Abstract: The present application provides a filtration unit for filtering a flow. The filtration unit may include one or more first layers and a second layer. The one or more first layers may include a prefilter layer and a wave layer.

Abstract: A modular design for large pulse jet fabric filters (PJFF) is divided into similar compartments, which are each “shop-fabricated” in quarter sections prior to delivery to the power plant site. The quarter sections of the compartments are modular and sized so that they can be fabricated at a shop located away from the power plant site and transported by truck over public roads to the power plant site. Once delivered to the site, the quarter sections are bolted together and seal welded to form a PJFF compartment, without requiring additional internal fabrication or welding. The assembled compartment is then lifted onto the support structure as an assembled unit and bolted and/or welded in place. The additional components of the PJFF may also be shop-fabricated offsite to further the benefits of the modular design.

Abstract: The Invention relates to a vacuum cleaner filter bag comprising a bag wall, wherein the bag wall comprises precisely one nonwoven layer in the form of a melt-spur microfibrous nonwoven layer.

Abstract: Systems and a method for removing carbon nanotubes from a continuous reactor effluent are provided herein. The method includes flowing the continuous reactor effluent through a separation vessel, separating carbon nanotubes from the continuous reactor effluent in the separation vessel, and generating a stream including gaseous components from the continuous reactor effluent.

Abstract: A dust-collecting apparatus is described that includes a lift-off door assembly that provides access to the interior of the dust-collecting apparatus while minimizing the adverse effects on the normal operation of the apparatus by maintaining a proper seal between the interior and the exterior of the apparatus. In particular, the lift-off door assembly includes a top plate, a door frame, and a bottom plate. The top plate is secured to the door frame. Lift clips are provided about a perimeter of the bottom plate and are secured to the bottom plate. Lifting ends of the lift clips are positioned over an outer portion of the door frame, such that when a lifting force is applied to the top plate, the top plate, door frame, and bottom plate are lifted together via the lift clips to move the lift-off door assembly from the closed position to the open position.

Abstract: A primary filter cage wall element is adapted to form, together with at least one complementary filter cage wall element, a tubular baghouse filter cage segment. The filter cage wall elements are provided with snap-locks, for snapping a first long side of the primary filter cage wall element to a second long side of the complementary filter cage wall element, and for snapping a second long side of the primary filter cage wall element to a first long side of the complementary filter cage wall element.

Abstract: A device for filtering air comprising a base, a fan functionally attached to the base, an air filter releasably attached to the base, and a substantially air impermeable outer sleeve is provided.

Abstract: The invention relates to a multi-layer cleanable filter material for gas and liquid filtration, said filter material comprising a filter layer and a substrate layer that follows the filter layer in the flow direction, wherein the filter layer is substantially dendrite-free and consists of a melt-blown fleece made of elastic polymer fibres that has a breaking elongation of at least 100%.

Abstract: A dust screen for an inspection hatch disposed in the roof or a side wall of a dry bulk storage unit for use during pneumatic loading of aggregate material from a pneumatic trailer via air pressure ducted into the bulk storage unit. The dust screen includes an elastic cord in a hem surrounding an open end of the screen to secure the dust screen to the inspection hatch. An alternative embodiment may include a binding strap having a ratchet buckle to supplement the elastic cord. As the dust screen extends upward in the presence of said air pressure, the dust is allowed to settle into the storage unit. No separate container to contain the dust is required, and no separate structure is required to support the dust screen during operation. The dust screen is light weight, portable and reusable, and low in cost.

Abstract: Presented is a method and apparatus for treating an exhaust gas. A series of filters and conditioning units are used to separate and extract various substances from the exhaust gas, typically originating from an industrial process. In an exemplary embodiment, a cyclone filter, a ceramic filter, a baghouse filter, and a pair of gas conditioners are used to initially separate and extract iron-rich dust from an exhaust gas and then extract zinc from the gas.

Abstract: A filter fabric having improved filtering properties for hot gas filtration containing a nonwoven aramid mat The mat has a basis weight of at least 9.7 ounces per square yard (330 grams per square meter) and is characterized by a pore size distribution in which the number of pores in a given range as measured by ASTM F316-03 test method is plotted against pore size. In a preferred embodiment, the percentage of pores having a size in between 10 and 26 microns is greater than 50% while the percentage of pores having a size of greater than 50 microns is less than 0.5%.

Abstract: The present invention provides a dust collector structure, especially a low-cost and simplified dust collector structure, which includes a leg frame set, an air-guiding box and a driving unit. The leg frame set includes two inverted U-shaped frame rods which are integrally formed and correspond to each other. The air-guiding box is arranged across top ends of the two frame rods, and is made by correspondingly closing an upper cover and a lower cover which are formed through integral draw molding. A driving unit for driving a blowing fan is arranged at an end of the air-guiding box. An air-filtering bag and a dust-collecting bag corresponding to each other are arranged at an end opposite to the driving unit on the upper and lower covers of the air-guiding box. Thus, structural components can be greatly simplified.

Abstract: A system includes a vacuum cleaner with a dust chamber having ribs and a dust bag including a fleece disposed on a supporting structure. The fleece includes a plurality of fleece corrugations, with a distance between the fleece corrugations being matched to a distance between the dust chamber ribs. The resultant matching of the fleece corrugation spacing and the spacing of the dust chamber rib prevents partial or large-area contact of portions of the dust bag with an inner surface of the dust chamber.

Abstract: The present invention relates to a vacuum cleaner filter bag comprising an inlet opening, a retaining plate, which is situated on the exterior of the bag in the vicinity of the inlet opening and can be attached to a retaining device of a vacuum cleaner in order to fix the vacuum cleaner filter bag, and a closing device situated in the vicinity of the inlet opening, which is configured in such a way that it adopts a first position when the retaining plate is not attached to the retaining device and a second position by the attachment of the retaining plate to the retaining device, wherein the inlet opening is closed in the first position of the closing device and is open in the second position of the closing device.

Abstract: The present disclosure relates to a sealing device 20 for a control rod 17, passing through an aperture 15c in a wall 15, wherein the control rod 17 is connected between an actuator 13, placed on one side of the wall, and a controlled entity 9a, placed on the other side of the wall, such that the actuator can control the controlled entity with motion of the control rod. The sealing device 20 includes a packing box 37 through which the control rod 17 passes and a seal 41 which provides a sealing function between the control rod 17 and the packing box 37. The packing box 37 is moveable with the control rod 17 in relation to the wall 15. Wall aperture 15c is sized to allow movement of the control rod 17 within aperture 15c. A flexible member 39 surrounds a portion of control rod 17 and extends between the packing box 37 and the wall 15, in a gastight communication with each. As such, the subject sealing device allows movement of the control rod without compromising the sealing function efficiency thereof.

Abstract: The invention relates to a vacuum cleaner filter bag, including an inlet opening (3), a filter bag material which has an inner layer of nonwoven material (10) at least in the region of the inlet opening, and a holding plate (2) which is arranged on the outside of the filter bag in the region of the inlet opening, can be attached to a vacuum cleaner holding means for securing the vacuum cleaner filter bag and on which a closure device (4) for closing the inlet opening is provided, wherein the nonwoven material, in the region of the inlet opening, has a surface (20) which is provided in such a manner that the formation of a filter cake on said surface is avoided.

Abstract: A vacuum cleaner having a housing with a dust container having an inlet for dust laden air, a filter unit comprising a flexible filter body, a motor fan unit for generating a flow of air through the inlet and through the filter unit, and a dust removing means configured to agitate the flexible filter body in response to a force applied to the dust removing means.

Abstract: The invention relates to a filtering device, comprising a tubular filter element and a carrier part, with the filter element fastened thereon. The carrier part can be inserted between an unfiltered fluid pipe and a filtered fluid pipe. The pipes can be assembled into a continuous flow pipe, wherein the filter element protrudes into the pipe interior.

Abstract: Presented is a method and apparatus for treating an exhaust gas. A series of filters and conditioning units are used to separate and extract various substances from the exhaust gas, typically originating from an industrial process. In an exemplary embodiment, a cyclone filter, a ceramic filter, a baghouse filter, and a pair of gas conditioners are used to initially separate and extract iron-rich dust from an exhaust gas and then extract zinc from the gas.

Abstract: A nonwoven felt for hot gas filtration. The fibers have a polyarylene sulfide (PAS) component that contains a zinc compound. In one embodiment, the PAS comprises at least one zinc(II) salt of an organic carboxylic acid. Also a method for filtering hot gases employing a bag made from a PAS component that contains a zinc or a zinc based additive.

Abstract: A filter fabric having improved filtering properties for hot gas filtration containing a nonwoven aramid mat The mat has a basis weight of at least 9.7 ounces per square yard (330 grams per square meter) and is characterized by a pore size distribution in which the number of pores in a given range as measured by ASTM F316-03 test method is plotted against pore size. In a preferred embodiment, the percentage of pores having a size in between 10 and 26 microns is greater than 50% while the percentage of pores having a size of greater than 50 microns is less than 0.5%.

Abstract: The Invention relates to a vacuum cleaner filter bag comprising a bag wall, wherein the bag wall comprises precisely one nonwoven layer in the form of a melt-spur microfibrous nonwoven layer.

Abstract: A method of folding a filter bag 10 made from a nonwoven fabric or stiff media to facilitate installation within a filter retainer basket and a folded filter bag 10 arrangement.

Abstract: Hot gas filtration fabrics for bag filters can be made using fibers that include high silica fibers and at least one FR fiber. The fabrics can be made using these fibers by needling and/or water jet entanglement. The fabrics may be treated with binders with or without additives to enhance mechanical properties or to impart other characteristics such as gas adsorption. Certain non-woven fabrics made according to the invention have improved high temperatures filtration capabilities and mechanical properties.

Abstract: A vacuum cleaner filter bag with an inlet opening and a deflection device arranged in the area of the inlet opening, which is configured in such a way that an air stream flowing through the inlet opening can be deflected.

Abstract: A dust collector for collecting sawdust and wood chips during use of wood working tools includes a conduit or hose connected through an impeller forcing air with entrained dust and chips to an inlet ring of a single stage dust collector. A particle collector reservoir is connected on the bottom of the inlet ring and a filter element is connected on top of the inlet ring. A tapered ring wall with a central opening is provided in the inlet ring and a baffle is mounted in the central opening of the ring wall. The baffle is of a cone shape and tapers an opposite direction from the frusto-conical ring wall. The inlet opening of the inlet ring is directed to between the ring wall and the baffle.

Abstract: A method for reducing formaldehyde emissions from articles prepared from, or which otherwise comprise formaldehyde-emitting compositions, such as formaldehyde-containing resins, is described. The method relates especially to a method for reducing formaldehyde emissions from products such as cellulose laminates, permanent press (wrinkle-free) textiles, floral foams and ceiling or acoustical tiles, which involves isolating the article in an enclosed space with a formaldehyde scavenger, particularly a formaldehyde scavenger carried by a substrate.

Abstract: An inlet air filtration system for a gas turbine includes, in an exemplary embodiment, an air plenum, and a plurality of filter elements mounted inside the air plenum, with each filter element including a support structure. The inlet air filtration system also includes a plurality of electrodes positioned proximate the plurality of filter elements, where the electrodes are coupled to a power source which supplies a voltage to the electrodes. The voltage is sufficient to establish an electrostatic field between the electrodes and the filter elements, and is sufficient to produce a corona discharge from the electrodes, wherein an amount of current applied to the filter elements is about 0.1 ?A/ft2 to about 15 ?A/ft2.

Abstract: A filter includes a membrane having pores and that is air permeable. A nanoparticle precursor is dispersed throughout the pores, and the nanoparticle precursor is responsive to a stimulus to form a catalytically active nanoparticle. An associated method is also provided.

Abstract: A filtration assembly for use with a suction cleaning device, the filtration assembly including a housing body for housing one or more filters; and a motor driven impeller which generates suction for drawing air and any entrained material into an inlet through the one or more filters and discharging the air through an outlet; wherein the one or more filters includes a first bag filter received by the housing body, the first bag filter including a base portion and a side portion which define a cavity for holding any material that cannot pass through the first bag filter; and, wherein the side portion of the first bag filter is laterally spaced apart from a wall portion of the housing body such that a gap is formed between the side portion and the wall portion.

Abstract: A dust collector includes a shell, an exit tube, an inner tube, a suction device, a first dust container, a bypass tube and a first dust bag. The shell defines a first receiving room therein. The exit tube defines an exit passage therein. The inner tube defines a connection passage which has a first opening and a second opening. The first opening communicates the first receiving room, and the second opening communicates the exit passage. The suction device provides the exit passage with a negative pressure. The first dust container defines a second receiving room therein. A mesh is disposed on a bottom surface of the first dust container to divide the second receiving room into a first chamber and a second chamber. The bypass tube defines a bypass passage therein, and it communicates the connection passage with the second chamber. The first dust bag is disposed in the first chamber.

Abstract: A filtration bag assembly may include an air permeable bag and a collar affixed thereto. The collar may include an opening that communicates with the interior of said bag and at least one panel that is movable to selectively obscure the opening. The collar includes a bottom surface and a pair of opposed tabs extending laterally from opposed lateral edges of the collar. A bracket is secured to the floor cleaning apparatus and includes a pair of opposed legs, that each includes a first ramp surface and a second ramp surface. During insertion of the collar into said bracket, the first ramp surface slidingly contacts the bottom surface and the second ramp surface slidingly contacts said tabs to move the collar upwardly into fluid communication with a nozzle.

Abstract: A bag filter (100) comprises a plurality of functional modules (1-4) associated with each other and adapted to perform respective functions in the bag filter. One or more functional modules (1-4) of said plurality of functional modules (1-4) have a respective structure obtained at least partially from one or more freight containers (10). A method for constructing such a bag filter (100) is also described.

Abstract: Filter media which may be used in ASHRAE applications are described. The media include a fiber web and has desirable performance characteristics.

Abstract: The present invention provides a nonwoven fabric for cylindrical bag filter, wherein a long-fiber nonwoven fabric made of a synthetic fiber is used and the long-fiber nonwoven fabric is a long-fiber nonwoven fabric which is made of a thermoplastic continuous filament and is partially thermocompression-bonded. It is preferable that the circular arc flexural rigidity per basis weight is 0.050 to 1.000 ((cN/2 cm)/(g/m2)) and the air permeation rate per basis weight is 0.010 to 0.500 ((cc/cm2/sec)/(g/m2)).

Abstract: The removable apparatus of a transparent filterable dust bag with a support container is designed as an attachment for a vacuum cleaner and like. A transparent filterable dust bag having an outer transparent wall and an inner filter cone coincides within a transparent support container which keeping the shape and position of the dust bag while separating dust from air. The transparent support container and the outer transparent wall of the dust bag allow to watch inside the filling level of the dust bag and to replace properly.

Abstract: A cyclone dust-separating apparatus includes a cyclone unit having air inflow and air outflow parts that separate dust or dirt from air, the cyclone unit being installed such that a longitudinal axis thereof is substantially horizontally arranged; a dust bin joined to a bottom end of the cyclone unit that collects the dust or dirt separated by the cyclone unit, the dust bin installed in such a manner that a longitudinal axis thereof is substantially perpendicular to the longitudinal axis of the cyclone unit; a nonporous envelope detachably disposed in the dust bin that stores the dust or dirt collected into the dust bin; and a pressure difference-generating passage to communicate an outlet of the air outflow part and the dust bin with each other so as to allow the nonporous envelope to come in contact with an inner surface of the dust bin by a pressure difference between the dust bin and the air outflow part.

Abstract: An inlet air filtration system for a gas turbine includes, in an exemplary embodiment, an air plenum, and a plurality of filter elements mounted inside the air plenum, with each filter element including a support structure. The inlet air filtration system also includes a plurality of electrodes positioned proximate the plurality of filter elements, where the electrodes are coupled to a power source which supplies a voltage to the electrodes. The voltage is sufficient to establish an electrostatic field between the electrodes and the filter elements, and at the same time, the voltage is sufficient to produce a corona discharge from the electrodes.

Abstract: A negative pressure dust collector with a dust receiving bag comprises a ventilation hood and an exhaust device. The ventilation hood includes a motor, fan blades, and a first exit. A dust collection tank is positioned below the first exit. The exhaust device comprises a ventilation tube and a flexible tube.

Abstract: A dust collector with a function of secondary collection is composed of a bottom base,an air guiding box installed above the bottom base and bored with a suction hole and a dust collecting hole at its upper and bottom surface respectively, a guiding device set inside the air guiding box, a filtering bag fixed on the guiding device, and a dust bag sealed with the lower dust collecting hole of the air guiding box. In using, dust can be drawn in by a blower to enter the air-guiding box. With a secondary filtration to prolong a service life of the filtering bag.

Abstract: An air filter assembly for removing particulate matter from an incoming dirty air stream. The assembly includes a housing having an inlet, an outlet, a dirty air chamber and a clean air chamber and a non-cylindrical shaped elongated filter element arranged within the dirty air chamber constructed to remove particulate matter from an incoming air stream. A plurality of non-cylindrical filter elements are preferred. The non-cylindrical filter elements provide a decreased incoming air stream velocity when compared to conventional cylindrical filter elements having the same surface area. Alternately, the non-cylindrical filter elements allow an increase in the volume of incoming air when compared to conventional cylindrical filter elements having the same surface area.

Abstract: A filter element (1) with a tubular folded bag (2) of folded filter material, which has a plurality of fold blades (3) adjacent each other in the longitudinal direction (10) of the folded bag (2) a closure cover (4) is attached at at least one axial end (7) of the folded bag (2). In order to provide a filter element which can be bent to any desired curved form while maintaining a high degree of filtration performance, and can be produced in a cost effective manner, the fold blades (3) of a folded bag (2) are provided with a combination of diagonal folds extending at an angle relative to each other such that the fold blades (3) in the longitudinal direction (10) of the folded bag extend back and forth and thereby form a three-dimensional crown structure (18). At least the outer margin of the closure cover (4) has a form corresponding to the crown structure (18) of the fold blades (3).

Abstract: The collector bag is provided that includes a fabric formed to define an internal volume, a plurality of sewn loops for disposal about an outer periphery of the collector frame, and a gather of fabric at each of the plurality of sewn loops for disposal about an inner circumference of the collector frame. The plurality of sewn loops are secured to the gather so that the internal volume of the collector bag, when disposed on the collector frame, is at least about 90 percent of a maximum volume of the collector frame.

Abstract: A vacuum cleaner bag includes a bottom part having a substantially rectangular base section. A projecting section is disposed proximate to at least one side of the base section. The projecting section, when folded up for the storage position, rests on the base section. Sidewall sections extend peripherally in a direction away from the bottom part to form an inside space.

Abstract: A filter assembly attachable to the discharge opening of a contaminated air source includes a filter having an outer periphery; a flexible conduit having a continuous side wall, an outer end attachable to the discharge opening, and an inner end attachable about the periphery of the filter; and a flexible side protrusion extending from the conduit sidewall, the protrusion having an inner end in communication with the interior of the conduit and a closed outer end. The filter can be mounted within an enclosure with an inlet opening and a discharge outlet, the conduit extending through the inlet opening and the filter being located within the enclosure.

Abstract: An inlet air treatment system for a gas turbine includes, in an exemplary embodiment, an air plenum, and a moisture removal system, and an air filtration system located downstream from the moisture removal system. The moisture removal system includes a plurality of S-shaped vanes, and a mesh structure downstream from the plurality of S-shaped vanes. The air filtration system includes a plurality of filter elements, with each filter element including a support structure. The inlet air filtration system also includes a plurality of electrodes positioned proximate the plurality of filter elements, where the electrodes are coupled to a power source which supplies a voltage to the electrodes. The voltage is sufficient to establish an electrostatic field between the electrodes and the filter elements, and at the same time, the voltage is sufficient to produce a corona discharge from the electrodes.

Abstract: A filter pipeline for an air intake system of an internal combustion engine has a tubular body and a filter element arranged in the tubular body. The filter element is a filter bag of a flexible material that has an opening and is attachable in the area of the opening to the tubular body. The filter bag and an inner wall of the tubular body are shaped such that in a circumferential direction of the pipeline different spacings are provided between the filter bag and the inner wall of the tubular body.

Abstract: This invention relates to a bag filter having a tubular section, one closed end and one open end, the tubular section having a nonwoven felt comprising an intimate fiber blend of 50 to 80 parts by weight polyphenylene sulfide fiber and 20 to 50 parts by weight acrylic fiber, based on the total weight of polyphenylene sulfide and acrylic fibers in the felt, wherein the acrylic fiber has an equal or lower denier per filament than the polyphenylene sulfide fiber.