A cyclonic air treatment member comprises a cyclone and a dirt collection chamber external to the cyclone chamber. The cyclone chamber extends longitudinally in an axial direction between a cyclone first end and a cyclone second end. The cyclone chamber includes an axially extending dirt outlet. A removable dirt outlet insert member may be removably receivable by a portion of the dirt outlet.

A dust filtering and collection system for filtering dust and other particles from an air stream generally being used for conveying granular material into or from a bulk tank, with the filtering system designed to incorporate structure, such as a specially designed grommet, for holding a porous filter tube for filtering out such dust particles, with a grommet having structure to provide for its interlocking and engagement with and through an aperture in a transverse plate within the system. The grommet has an upper flange, that engages the upper surface of the transverse plate, and has an inner flange for engagement with the upper edge of the filter tube, while the bottom of the grommet has resilient fingers and associated detents for engaging the bottom of the transverse plate, to furnish an interlocking of the grommet, with its supported filter tube, onto and through the transverse plate.

An inline vortex demister for removing moisture from an air stream is disclosed. In embodiments, the inline vortex demister includes one or more vortex-inducing structures disposed within a tube. In embodiments, the one or more vortex-inducing structures are configured to induce an air stream with a first moisture content into a vortex flow pattern in order to remove a first volume of moisture from the air stream by causing the first volume of moisture to adsorb to an inner tube surface of the tube. In additional embodiments, the inline vortex demister includes a demister element disposed within the tube, wherein the demister element is configured to remove a second volume of moisture from the air stream.

A particle separator assembly includes an airbox providing an outer tapered portion tapering from a first section having a first cross sectional area to a first opening having a second cross sectional area less than the first cross sectional area. The example assembly includes a flow diverter providing an inner tapered portion that tapers to a second opening. The example assembly includes an air filter housed by the airbox, the air filter is spaced from the second opening in a first direction, and the first opening is spaced from the second opening in a second direction opposite the first direction.

A hand vacuum cleaner has a first air treatment stage comprising a first stage air treatment chamber and a first stage longitudinal axis extending between the front and rear ends of the first air treatment stage and a second air treatment stage downstream from the first stage air treatment chamber, the second air treatment stage a second stage air treatment chamber and a second stage dirt collection chamber that is exterior to the second stage air treatment chamber. The second stage dirt collection chamber extends forward of the second stage air treatment chamber. A plane that is transverse to the first stage longitudinal axis extends through the first stage air treatment chamber and the second stage dirt collection chamber, and the first stage air treatment chamber and the second stage dirt collection chamber are concurrently openable.

A dust container for a vacuum cleaner comprises a vessel, a reed valve, and a filter. The vessel has a longitudinal axis and an annular cross section transverse to the longitudinal axis. The vessel has a first end and a second end, a tangential inlet near the first end, and an axial outlet at the first end. The second end is closed, and the vessel is impervious except for the inlet and the outlet. A vacuum actuated valve biased toward a closed position is positioned to seal the inlet of the vessel, and a filter is positioned in covering relationship with the outlet of the vessel. Dust is trapped within the vessel which can be disposed of as a unit together with the valve and filter and can be replaced with a fresh unit.

A vacuum cleaner includes a suctioning unit, a main body including a cyclone unit for separating dust from the air suctioned through the suctioning unit, a body forming a dust container for storing the dust separated by the cyclone unit, and a body cover for opening and closing the lower side of the body. A filter unit is arranged in the body for filtering air. An actuating unit is configured to move in the body along a space between the outside of the filter unit and the inner circumferential surface of the body.

A multiple inlets cyclo-filtration hydrocyclone separator includes a separator body having an upper body part and a lower body part narrower than the upper body part in diameter; at least two feeders connected helically to the upper body part from a lateral side for feeding in a raw liquid; an upstream outlet disposed axially within the separator body, having an upper part projecting upward and axially from the upper body part and a lower part extending into the lower body part; a downstream outlet attached axially to the lower body part in spatially communication therewith; and a filtering unit disposed axially within an inner wall confining the upstream outlet. The filtering unit has an upper part projecting upwardly and outwardly from a top end of the upstream outlet and a lower part extending into the downstream outlet. The filtering unit consists of a filtering membrane having an inner wall confining the filtering member.

A separator for separating solid particles from a processing gas stream that has been fed repeatedly through a work machine, wherein the separator includes a processing gas inlet through which particle-laden processing gas emitted from the work machine is fed into the separator, and a filterless separator element to reduce the particle content of the processing gas and a processing gas outlet to discharge the processing gas with its reduced particle content to the work machine, the separator including a secondary stream filter, which filters a smaller portion of the processing gas, and a secondary outlet, connected thereto, which ejects the filtered secondary stream of processing gas.

A hand vacuum cleaner has a cyclone assembly positioned in the air flow path, the cyclone assembly comprising a cyclone chamber, the cyclone chamber having a front end, a rear end, a cyclone axis of rotation extending between the front and rear ends, a cyclone air inlet and a cyclone air outlet provided at the rear end of the cyclone chamber, wherein the rear end is rotationally moveable by a rotational mount between a closed position in which the cyclone is closed and an open position wherein a rear portion of the cyclone is open.