A screen basket for centrifuges having a wedge wire with a broad end and an opposite narrow end. The wedge wire narrows in width from the broad end to the narrow end and the wedge wire increases in depth from the broad end to the narrow end.

A screen basket for centrifuges having a wedge wire with a broad end and an opposite narrow end. The wedge wire narrows in width from the broad end to the narrow end and the wedge wire increases in depth from the broad end to the narrow end.

A screening device for separating dry granular material into a fine fraction and a coarse fraction is provided. The screening device includes a drum screen defined by an open rotatable frame, which frame defines a circumferential wall, and a sheet-like screen arranged over the circumferential wall of the frame. The screening device also includes a driving device by means of which the drum screen is rotatably driven, a feed opening at a short end of the drum screen and a discharge opening at the opposite short end of the drum screen. The screening device further includes a vibration device which rotates along with the drum screen, which vibration device includes one or more vibrating elements mounted to the drum screen, which set the drum screen vibrating in use. A method for separating dry granular material into a fine fraction and a coarse fraction is also provided.

A screening device for separating dry granular material into a fine fraction and a coarse fraction is provided. The screening device includes a drum screen defined by an open rotatable frame, which frame defines a circumferential wall, and a sheet-like screen arranged over the circumferential wall of the frame. The screening device also includes a driving device by means of which the drum screen is rotatably driven, a feed opening at a short end of the drum screen and a discharge opening at the opposite short end of the drum screen. The screening device further includes a vibration device which rotates along with the drum screen, which vibration device includes one or more vibrating elements mounted to the drum screen, which set the drum screen vibrating in use. A method for separating dry granular material into a fine fraction and a coarse fraction is also provided.

A feed diffuser for use in a rotating screen having drain holes is provided, comprising a flow chamber having an upstream end and a downstream end and defining a flow path for a slurry having solid material larger than the drain holes flowing between the upstream end and the downstream end; the flow chamber having an intermediate portion disposed between the upstream end and the downstream end; the intermediate portion having a first opening; the flow chamber having an inclined floor, the lowest point of the inclined floor being adjacent to the first opening; whereby the inclined floor is sufficiently inclined such that when the slurry flows down the flow path, the larger solid material is directed towards the first opening.

A feed diffuser for use in a rotating screen having drain holes is provided, comprising a flow chamber having an upstream end and a downstream end and defining a flow path for a slurry having solid material larger than the drain holes flowing between the upstream end and the downstream end; the flow chamber having an intermediate portion disposed between the upstream end and the downstream end; the intermediate portion having a first opening; the flow chamber having an inclined floor, the lowest point of the inclined floor being adjacent to the first opening; whereby the inclined floor is sufficiently inclined such that when the slurry flows down the flow path, the larger solid material is directed towards the first opening.

Variation in the amount of material that is dispersed when material containing fiber is discharged by a sieve is suppressed. A fiber processing device has a drum that screens defibrated material containing fiber, a mesh belt that accumulates first screened material discharged from the drum, and a processor that processes the first screened material accumulated on the mesh belt. The drum operates at a first speed during processing by the processor; and when the drum starts from a stationary stop, a startup operation including a state in which the drum operates at a slower speed than the first speed executes for a specific time.

The invention is used in various branches of industry, in particular in agriculture for preparing seeds for sowing and for selection purposes. The method of separating a granular mixture in a flowing medium is based on a gravitational supply of particles, with an aerodynamic, monotonously increasing action thereon with a cascade of flat jets, said cascade being stabilized in terms of pressure and discharge. Large impurities are removed from the granular mixture beforehand, and stable parameters are maintained in the separation chamber. The device comprises a vibrating screen, an adjustable hopper with an agitator and a vibrating chute, a generator of a cascade of flat jets, which is connected to a drive for supplying air under pressure, a fraction collector and a separation chamber. The output of the separation chamber is covered with a filtering element in the form of a rotating drum with a calibrating sifter on the surface, said sifter being connected to a cyclone.

The invention is used in various branches of industry, in particular in agriculture for preparing seeds for sowing and for selection purposes. The method of separating a granular mixture in a flowing medium is based on a gravitational supply of particles, with an aerodynamic, monotonously increasing action thereon with a cascade of flat jets, said cascade being stabilized in terms of pressure and discharge. Large impurities are removed from the granular mixture beforehand, and stable parameters are maintained in the separation chamber. The device comprises a vibrating screen, an adjustable hopper with an agitator and a vibrating chute, a generator of a cascade of flat jets, which is connected to a drive for supplying air under pressure, a fraction collector and a separation chamber. The output of the separation chamber is covered with a filtering element in the form of a rotating drum with a calibrating sifter on the surface, said sifter being connected to a cyclone.

Cannabis material is frozen within an inner chamber and agitated, such as by rotating the inner chamber within an outer chamber. Filters limit the passage of cannabis material from the inner to the outer chamber to primarily allow the passage of cannabis trichomes through the filters. Air flows through the outer chamber from an air inlet to an air outlet and entrains the filtered material within an air stream. The entrained material is separated and collected, such as by one or more cyclone separators.