A system for purifying a fibrous suspension consists of multiple hydro-cyclones arranged adjacent to one another in a row, each of the hydro-cyclones having at least one feed connection, one accepted stock connection and one reject material connection, and having at least one supply manifold which is connected to multiple feed connections and/or having at least one accepted stock manifold which is connected to multiple accepted stock connections and/or having at least one reject material manifold which is connected to multiple reject material connections, the manifold being elongated and the corresponding connections discharge at their longitudinal side into the corresponding manifold. At an end of at least one manifold which follows the final hydro-cyclone, a fluid or a suspension is guided via at least one flushing connection into or out of the manifold.

A cyclone separator arrangement includes a preceding apparatus having an outlet, and a cyclone separator having an inlet. The arrangement further includes a crossover duct connected to the outlet and the inlet for supplying gas flow including particles from the preceding apparatus to the cyclone separator. The preceding apparatus has a horizontal inner diameter (D), and a flow channel having a cross-section having a height (H) and a width (d), said width (d) relating to the inner diameter (D) such that 0.15×D<d<0.6×D.

The invention in at least one embodiment includes a system for treating water having an intake module, a vortex module, a disk-pack module, and a motor module where the intake module is above the vortex module, which is above the disk-pack module and the motor module. In a further embodiment, a housing is provided over at least the intake module and the vortex module and sits above the disk-pack module. In at least one further embodiment, the disk-pack module includes a disk-pack turbine having a plurality of disks having at least one waveform present on at least one of the disks.

The invention in at least one embodiment includes a system for treating water having an intake module, a vortex module, a disk-pack module, and a motor module where the intake module is above the vortex module, which is above the disk-pack module and the motor module. In a further embodiment, a housing is provided over at least the intake module and the vortex module and sits above the disk-pack module. In at least one further embodiment, the disk-pack module includes a disk-pack turbine having a plurality of disks having at least one waveform present on at least one of the disks.

A drilling mud treatment unit (100) comprises a primary duct (10) for feeding coagulated drilling mud, an in-line flocculation system (20) for flocculating the coagulated drilling mud flowing in the primary duct (10), and at least one hydrocyclone (30) fed by the primary duct (10) and arranged downstream from the flocculation system (20). The hydrocyclone (30) has an overflow orifice (32) for receiving a liquid product resulting from treatment of the drilling mud and an underflow orifice (34) for receiving a solid product resulting from treatment of the drilling mud. The overflow orifice (32) presents an overflow diameter (Do) and the underflow orifice presents an underflow diameter (Du), and the underflow diameter (Du) is greater than 1.1 times the overflow diameter (Do).

A drilling mud treatment unit (100) comprises a primary duct (10) for feeding coagulated drilling mud, an in-line flocculation system (20) for flocculating the coagulated drilling mud flowing in the primary duct (10), and at least one hydrocyclone (30) fed by the primary duct (10) and arranged downstream from the flocculation system (20). The hydrocyclone (30) has an overflow orifice (32) for receiving a liquid product resulting from treatment of the drilling mud and an underflow orifice (34) for receiving a solid product resulting from treatment of the drilling mud. The overflow orifice (32) presents an overflow diameter (Do) and the underflow orifice presents an underflow diameter (Du), and the underflow diameter (Du) is greater than 1.1 times the overflow diameter (Do).

A recoverable module is configured for subsea environments, and is suitable for use in the processing of fluids linked to the oil industry, and subsea fluid separation equipment or equipment involving any process performed through liners. The recoverable module for subsea environments includes a separating vessel provided with an inlet and two underflow and overflow or tailing outlets, in addition to a cover which has a set of removable liners fastened to its interior.

A vacuum cleaner including a dirty air inlet, a fluid flow path extending from the dirty air inlet to a clean air outlet, a fluid flow motor positioned in the fluid flow path, and a filter assembly positioned in the fluid flow path. The filter assembly including a first cylindrical filter and a second cylindrical filter nested within and removable from the first cylindrical filter. An inner diameter of the first cylindrical filter is smaller than an outer diameter of the second cylindrical filter such that the second cylindrical filter is compressed in order to be nested within the first cylindrical filter.

A vacuum cleaner including a dirty air inlet, a fluid flow path extending from the dirty air inlet to a clean air outlet, a fluid flow motor positioned in the fluid flow path, and a filter assembly positioned in the fluid flow path. The filter assembly including a first cylindrical filter and a second cylindrical filter nested within and removable from the first cylindrical filter. An inner diameter of the first cylindrical filter is smaller than an outer diameter of the second cylindrical filter such that the second cylindrical filter is compressed in order to be nested within the first cylindrical filter.

A vehicle may include an undercarriage with a vacuum spoils tank and a multi-cyclone body housing mounted thereon. A vacuum spoils tank may be in fluid connection to the multi-cyclone body housing. The vacuum spoils tank may include both an inlet and an outlet. A multi-cyclone body may be housed within the multi-cyclone body housing. The housing may be positioned at the vacuum spoils tank outlet, and the multi-cyclone body may carry a plurality of mini-cyclonic chambers. Each mini-cyclonic chamber may include an outlet tube and a mini-cyclonic separator. The mini-cyclonic separator may be in fluid communication with the vacuum spoils tank outlet. The outlet tube may be in fluid communication with a multi-cyclone body housing outlet and a filtration system