A reject chamber for use with a hydrocyclone for separating a fiber suspension into a heavy fraction substantially containing heavy contaminants and a light fiber fraction substantially containing fibers, the reject chamber having an internal cavity, a reject inlet into the internal cavity, and a reject outlet out of the internal cavity, the longitudinal axis of the reject outlet being angled relative to the longitudinal axis of the reject inlet. The reject chamber has a stem that extends into the internal cavity at the elbow of the reject chamber, and at least two bumps, each of which extend into the chamber on opposite sides of the stem, the reject chamber taken along a cross section through the stem and between the bumps having symmetrical sides.

A dust suction system comprises a cyclonic dust filter component, a dust collection bucket and a load bearing frame. The dust collection bucket comprises an assembly rib, the load bearing frame comprises a frame and a support plate disposed on the frame, and the support plate comprises a through hole disposed corresponding to a dust exhausting port, and at least two assembly jaws located at two opposite sides of the through hole. Each of the assembly jaws comprises a connecting section, an extending section connecting the connecting section, and a limiting section connecting the extending section. The limiting section comprises a limiting protrusion disposed towards a direction of the through hole. When the two assembly jaws are not forced, movement of the assembly rib is restricted by the limiting section, so that the dust collection bucket is fixed on the frame.

A dust suction system comprises a cyclonic dust filter component, a dust collection bucket and a load bearing frame. The dust collection bucket comprises an assembly rib, the load bearing frame comprises a frame and a support plate disposed on the frame, and the support plate comprises a through hole disposed corresponding to a dust exhausting port, and at least two assembly jaws located at two opposite sides of the through hole. Each of the assembly jaws comprises a connecting section, an extending section connecting the connecting section, and a limiting section connecting the extending section. The limiting section comprises a limiting protrusion disposed towards a direction of the through hole. When the two assembly jaws are not forced, movement of the assembly rib is restricted by the limiting section, so that the dust collection bucket is fixed on the frame.

A cyclone separator for separating at least two phases of a fluid, with a base housing through which the fluid can flow in an essentially helical pattern, that has a separation chamber with an upper and a lower end, wherein the upper and lower end each respectively have a wall, and a central axis that extends between the two ends, and furthermore a central separation tube arranged inside the conical separation chamber, concentric to the central axis of the base housing, with an essentially cylindrical wall having a surface facing toward the inner cross-section with a first surface profile, and a surface facing away from the inner cross-section with a second surface profile. The base housing has at its upper end a header section with an inner radius and with at least one essentially tangentially attached inlet opening for the fluid, as well as at least one light fraction outlet opening with a cross-section and, at its lower end, at least one expansion chamber and at least one heavy fraction outlet opening. The separation chamber tapers conically in the direction of the lower end at least incrementally in sections, preferably with a constant cone angle α.

A cyclone separator for separating at least two phases of a fluid, with a base housing through which the fluid can flow in an essentially helical pattern, that has a separation chamber with an upper and a lower end, wherein the upper and lower end each respectively have a wall, and a central axis that extends between the two ends, and furthermore a central separation tube arranged inside the conical separation chamber, concentric to the central axis of the base housing, with an essentially cylindrical wall having a surface facing toward the inner cross-section with a first surface profile, and a surface facing away from the inner cross-section with a second surface profile. The base housing has at its upper end a header section with an inner radius and with at least one essentially tangentially attached inlet opening for the fluid, as well as at least one light fraction outlet opening with a cross-section and, at its lower end, at least one expansion chamber and at least one heavy fraction outlet opening. The separation chamber tapers conically in the direction of the lower end at least incrementally in sections, preferably with a constant cone angle α.

This invention relates to a process and apparatus for growing agricultural products with a reduced abundance of radioactive carbon-14 (.sup.14C) by employing centrifugal separation of atmospheric gases to selectively remove carbon dioxide (CO.sub.2) with .sup.14C. Agricultural products with reduced .sup.14C content can be grown in controlled environments with filtered atmospheric gases for the benefit of reducing harmful damage to human DNA that is unavoidable with our current food chain, due to the natural abundance of .sup.14C in atmospheric gases. Bilateral and unilateral compression helikon vortex apparatus provide efficient and economical removal of CO.sub.2 with .sup.14C from atmospheric gases with a single filtration pass, which is ideally suited for large scale agricultural production.

This invention relates to a process and apparatus for growing agricultural products with a reduced abundance of radioactive carbon-14 (.sup.14C) by employing centrifugal separation of atmospheric gases to selectively remove carbon dioxide (CO.sub.2) with .sup.14C. Agricultural products with reduced .sup.14C content can be grown in controlled environments with filtered atmospheric gases for the benefit of reducing harmful damage to human DNA that is unavoidable with our current food chain, due to the natural abundance of .sup.14C in atmospheric gases. Bilateral and unilateral compression helikon vortex apparatus provide efficient and economical removal of CO.sub.2 with .sup.14C from atmospheric gases with a single filtration pass, which is ideally suited for large scale agricultural production.

A dust collecting device using multi-cyclone dust filtration includes a dust collecting chamber, cyclone chamber and airflow guiding component. The dust collecting chamber communicates with the cyclone chamber having an intake port for a gas to be filtered, an annular side wall connected to intake port and guiding gas to be filtered to form a first cyclone, an engaging port communicated with dust collecting chamber and allowing first cyclone to enter dust collecting chamber, and an exhaust port. The airflow guiding component within cyclone chamber is provided with a return flow tube receiving the returned gas to be filtered and forming a second cyclone, an airflow guiding bonnet separated from return flow tube, and a dust filtration channel between airflow guiding bonnet and return flow tube. The second cyclone flows toward the exhaust port, and enables dust therein to enter cyclone chamber again, as passing by dust filtration channel.

A dust suction system comprises a cyclonic dust filter component, a dust collection bucket and a load bearing frame. The dust collection bucket comprises an assembly rib, the load bearing frame comprises a frame and a support plate disposed on the frame, and the support plate comprises a through hole disposed corresponding to a dust exhausting port, and at least two assembly jaws located at two opposite sides of the through hole. Each of the assembly jaws comprises a connecting section, an extending section connecting the connecting section, and a limiting section connecting the extending section. The limiting section comprises a limiting protrusion disposed towards a direction of the through hole. When the two assembly jaws are not forced, movement of the assembly rib is restricted by the limiting section, so that the dust collection bucket is fixed on the frame.

A separator apparatus includes an intake nozzle, first cyclone device, and a second cyclone device. The first and second cyclone devices each include an inlet section, a scroll, a barrel centered on a first axis, a vortex finder, and an underflow portion. The scroll is attached to the inlet section and to the barrel such that the scroll connects the inlet section to the barrel. The vortex finder has a vortex tube arranged concentrically on the axis in an interior volume of barrel. The underflow portion defines an annular gap in fluid connection with the interior volume. The intake nozzle is fluidly connected to the inlet sections of the first and second cyclone devices.