A dust removing device for a long bag filter having a large diameter employs a method of injecting amplified air through a dual injector having two injectors vertically arranged on the same axis to exhibit a stronger dust removing force than a conventional bag filter dust removing device, and is thus applicable to a bag filter having relatively a large diameter and a long length.

A dust removing device for a long bag filter having a large diameter employs a method of injecting amplified air through a dual injector having two injectors vertically arranged on the same axis to exhibit a stronger dust removing force than a conventional bag filter dust removing device, and is thus applicable to a bag filter having relatively a large diameter and a long length.

A mobile earth working machine (10), for example a road milling machine, recycler, or surface miner, includes: a working apparatus (12) for material-removing working of a region of a substrate (U); and an extraction device (40) that is embodied to extract dust-laden air from at least one machine region at at least one extraction location (46), and to exhaust extracted air at a discharge location (50) different from the extraction location (46),

the extraction device (40) comprising a filter apparatus (42) arranged along an operational flow path from the at least one extraction location (46) to the discharge location (50), the filter apparatus (42) encompassing: a filter housing (54); a filter element (52) received in the filter housing (54), the filter element (52) being embodied to remove dust particles from the air flowing through the filter apparatus (42). The filter apparatus (42) comprises a deformation actuator arrangement (44, 76a) that interacts force-transferringly with at least one wall (86) of the filter housing (54) in such a way that by actuation of the deformation actuator arrangement (44, 76a), the at least one wall (86) of the filter housing (54) is deformable orthogonally to its wall surface.

A system and method of positioning and activating a rotating manifold for a filtration system that more precisely injects pressurized air into filter elements without being prone to getting out of sync and that can be more easily adjusted or calibrated without having an individual enter the filtration system. The system can generally comprise a rotating cleaning manifold, a shaft encoder, a position switch, and a controller. The shaft encoder can be configured to sense an angular position and output a first positional data value. The position switch can be configured to sense a complete revolution and output a second positional data value. The controller can be configured to receive the first positional data value and the second positional data value and cause the output of at least one signal via an output module to activate an intermittent cleaning pulse.

Pulse jet air cleaner systems, components and methods are described. The features relate to air cleaner housings that include a cartridge receiving section. Features described relate to a possible two-stage construction, a possible pulse jet accumulator section, pulse jet equipment for cleaning a filter cartridge positioned within the air cleaner; possible evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.

A vacuum cleaner dust container having a dust bag, made of an air permeable material, and a connector plate, surrounding an opening in the dust bag. The connector plate is configured by the connector plate being slid into a holder of a vacuum cleaner to correctly position the opening therein. The connector plate has a central portion surrounding the opening, and an extending portion projecting from the central portion. The extending portion has a lower bending stiffness than the central portion about an axis perpendicular to the direction in which it is inserted. Thereby extending portion can be bent out of the plane of the central portion and into a curvature without bending the central portion, which facilitates fitting the connector plate in a vacuum cleaner canister with curved inner walls.

A vacuum cleaner dust container having a dust bag, made of an air permeable material, and a connector plate, surrounding an opening in the dust bag. The connector plate is configured by the connector plate being slid into a holder of a vacuum cleaner to correctly position the opening therein. The connector plate has a central portion surrounding the opening, and an extending portion projecting from the central portion. The extending portion has a lower bending stiffness than the central portion about an axis perpendicular to the direction in which it is inserted. Thereby extending portion can be bent out of the plane of the central portion and into a curvature without bending the central portion, which facilitates fitting the connector plate in a vacuum cleaner canister with curved inner walls.

A filtration system housing is provided for supporting filtration system components. The filtration system is configured to remove particulates from air. The housing comprises a plurality of walls defining a chamber for receiving pressurized air. The housing additionally comprises a reinforcing member at least partially surrounding said walls. At least one of the walls is contoured to include a spatial curvature extending along a portion of the at least one wall.

The invention relates to a dust-handling device (1) for collecting and handling dust in a paper-making environment wherein the dust-handling device (1) comprises a source of underpressure (2) and an elongated collector (3) that extends along a longitudinal axis. The elongated collector (3) is connected to the source of underpressure (2) such that underpressure can be generated inside the elongated collector (3) and the elongated collector (3) has an inlet (5) through which dust-laden air can enter the elongated collector (3) and an exit opening (6) through which dust-laden air can be evacuated from the elongated collector. The inlet (5) of the elongated collector (3) is disposed in such a relation to the longitudinal axis of the elongated collector (3) so that upon drawing the dust-laden air into the elongated collector (3), an air vortex is induced with the dust-laden air wherein the induced air vortex flows between the collector inlet (5) and the collector exit opening (6). A source of water (7) is connected to the elongated collector such that water can be introduced into elongated collector (3) so that dust of the dust-laden air can be exposed to and mix with the water introduced into the elongated collector (3). According to the invention, a dust removal device (8, 10) is mounted on the elongated collector and arranged to act against the inlet (5) to remove dust that has clogged the inlet (5). The invention also relates to a method in which dust clogging the inlet (5) is removed.

The air filter cleaning device provides a tool for efficiently cleaning an air filter. the air filter cleaning device includes an elongated coil extending between a first end and a second end. The coil includes a surface that defines a hollow interior extending between first end and second end such that the coil is configured to be tubular. the elongated straight portion is connected with the actuator via the swivel joint. The coil is placed into the cavity of the air filter. The actuator is actuated, thereby causing air to enter the first end, flow through the interior and exit the opening. The pressure of the air exiting the opening causes the coil to rotate relative to the air filter. As the coil rotates, the pressure of the air pushes dust and/or debris from the porous material of the air filter.