The disclosed Hydro-Gravitational Trap (HGT) method and apparatus separate a suspension into two flow streams, discriminating particles based on a designated particle settling velocity: one Designated Particle Concentrated (DPC) and one Designated Particle Diluted (DPD). The HGT confines particles between a controlled upward hydrodynamic field and the downward net gravitational field within the apparatus's High-Energy Segment (HES), awaiting removal. The HES typically contains an internal agitator conforming to its divergent shape. Agitator motion prevents trapped particles from adhering to the HES, provides flocculation energy, and mixes the contents, controlling the DPC flow stream concentration. The agitator can also simultaneously function as a control valve or an actuator regulating this flow in some preferred embodiments. Designated particles remain trapped in the HES until removed with the DPC flow stream while the DPD flow stream advects upward, exiting the apparatus through the top of the Low-Energy Segment (LES).

The disclosed Hydro-Gravitational Trap (HGT) method and apparatus separate a suspension into two flow streams, discriminating particles based on a designated particle settling velocity: one Designated Particle Concentrated (DPC) and one Designated Particle Diluted (DPD). The HGT confines particles between a controlled upward hydrodynamic field and the downward net gravitational field within the apparatus's High-Energy Segment (HES), awaiting removal. The HES typically contains an internal agitator conforming to its divergent shape. Agitator motion prevents trapped particles from adhering to the HES, provides flocculation energy, and mixes the contents, controlling the DPC flow stream concentration. The agitator can also simultaneously function as a control valve or an actuator regulating this flow in some preferred embodiments. Designated particles remain trapped in the HES until removed with the DPC flow stream while the DPD flow stream advects upward, exiting the apparatus through the top of the Low-Energy Segment (LES).

This invention relates to a classifier for separating particles by size and density and a method of classifying particles by size and density. The classifier, which is also used in the method, includes an underflow outlet for conveying a first product out of the classifier; a fluidising means for introducing a fluidisation fluid into the classifier; a settling chamber for forming a hindered-settling zone, the settling chamber being in fluid flow communication with the fluidising means and the underflow outlet; a reflux chamber for forming a free-settling zone, the reflux chamber being in fluid flow communication with the settling chamber and having a cross-sectional area larger than that of the settling chamber; a launder in fluid flow communication with the reflux chamber for conveying a second product to an overflow outlet of the classifier; and an inlet conduit which projects into the classifier for introducing a feedstock into the classifier.

This invention relates to a classifier for separating particles by size and density and a method of classifying particles by size and density. The classifier, which is also used in the method, includes an underflow outlet for conveying a first product out of the classifier; a fluidising means for introducing a fluidisation fluid into the classifier; a settling chamber for forming a hindered-settling zone, the settling chamber being in fluid flow communication with the fluidising means and the underflow outlet; a reflux chamber for forming a free-settling zone, the reflux chamber being in fluid flow communication with the settling chamber and having a cross-sectional area larger than that of the settling chamber; a launder in fluid flow communication with the reflux chamber for conveying a second product to an overflow outlet of the classifier; and an inlet conduit which projects into the classifier for introducing a feedstock into the classifier.

The present invention relates to an apparatus for collecting inert particles in a kitchen waste slurry, and in particular to an apparatus and method for collecting inert particles in a slurry by applying Venturi effect. The method includes the steps: an apparatus for collecting the inert particles based on the Venturi effect, a method for drawing a pipeline flow velocity cloud plot, a method for counting a concentration of the inert particles, etc. By means of a method for counting a flow velocity, a concentration of inert substances in the slurry and a particle density in a target kitchen waste slurry, an optimal arrangement solution of an inert particle collector is determined. A Venturi-type inert particle collecting apparatus of the present invention includes an inert particle settling apparatus, a particle storage apparatus, and a connection portion between the apparatuses. With stable recovery of the inert particles in the kitchen waste slurry as a target, through simulation and field debugging of flow conditions and a content of inert substances of the slurry, and feedback adjustment on each recovery of the inert substances, the present invention obtains a stable recovery cycle, and finally achieves sustainable and stable recovery of inert particles in the kitchen waste slurry.

The present invention relates to an apparatus for collecting inert particles in a kitchen waste slurry, and in particular to an apparatus and method for collecting inert particles in a slurry by applying Venturi effect. The method includes the steps: an apparatus for collecting the inert particles based on the Venturi effect, a method for drawing a pipeline flow velocity cloud plot, a method for counting a concentration of the inert particles, etc. By means of a method for counting a flow velocity, a concentration of inert substances in the slurry and a particle density in a target kitchen waste slurry, an optimal arrangement solution of an inert particle collector is determined. A Venturi-type inert particle collecting apparatus of the present invention includes an inert particle settling apparatus, a particle storage apparatus, and a connection portion between the apparatuses. With stable recovery of the inert particles in the kitchen waste slurry as a target, through simulation and field debugging of flow conditions and a content of inert substances of the slurry, and feedback adjustment on each recovery of the inert substances, the present invention obtains a stable recovery cycle, and finally achieves sustainable and stable recovery of inert particles in the kitchen waste slurry.