In order to provide an airflow sorting device having high accuracy and easy adjustment properties with a simple configuration, there are provided a conduit which has a central shaft line and which lets an object to be sorted to fall due to gravity on the inside of the conduit along the central shaft line; an air supply port which is provided at a lower part of the conduit and configured to blow air upward along the central shaft line; a suction port which is provided above the air supply port of the conduit and is an opening oriented downward of a suction pipe provided parallel to the central shaft line; and an input port provided above the suction port of the conduit through which the object to be sorted is input into the periphery of the suction pipe which is in the conduit. Sorting is performed in the sorting device according to whether or not the object to be sorted is being suctioned by the suction port together with a part or the entirety of an airflow generated in the conduit by the air blown from the air supply port, and an airflow adjusting body which is provided below the suction port in the conduit and blocks a falling path of the object to be sorted which falls due to gravity, is provided, and the airflow adjusting body includes: a vertex on the central shaft line; and an inclined surface having a sectional shape, sectional areas of which are similar to each other and increase in size downward, and a drag force which acts on the object to be sorted which falls due to gravity increases downward from the suction port.

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.

A vertical roller mill includes a housing, a chute that supplies materials to be grinded to a center portion of the housing, a grinder that is provided below the chute and grinds the materials to be grinded, an exhaust pipe that is provided above the grinder, a transport mechanism that forms an air flow for transporting, to the exhaust pipe, grinded materials grinded by the grinder, and a flow-constricting flow path provided between the grinder and the exhaust pipe and narrows a flow path area for the air flow, in which the flow-constricting flow path is formed between a first flow-constricting ring provided in the center portion of the housing and a second flow-constricting ring provided to protrude from the housing toward the center portion of the housing.

The group of inventions can be used in agriculture as well as the food, chemical, mining, metallurgical and construction industries for the fractional separation of bulk mixtures. The group of inventions consists of a method of impeller-driven injection of gas in aerodynamic separator, wherein the gas flow is directed at an angle required for the separation process by tilting the impeller axis. Then the flow of gas is divided into inner and outer flows by an internal conical ring 5. After that the inner and outer flows are straightened by directing them through profiled blades of the inner and outer sections 6 of the stator 4. The slowdown of the flow in the center is eliminated by an exhaust cone 7. Finally, the sectional shape of the flow is changed from round to square or rectangular by passing the flow through supply channel. The proposed group of inventions also consists of a gas boosting unit 12 that is used for the implementation of the above-identified method, wherein the above-identified method and blowing unit 12 are used. The application of a group of inventions for the separation of bulk mixtures leads to a reduction in energy consumption, simplify the design of nodes and improving the quality of the fractional separation of the bulk mixture.

The group of inventions can be used in agriculture as well as the food, chemical, mining, metallurgical and construction industries for the fractional separation of bulk mixtures. The group of inventions consists of a method of impeller-driven injection of gas in aerodynamic separator, wherein the gas flow is directed at an angle required for the separation process by tilting the impeller axis. Then the flow of gas is divided into inner and outer flows by an internal conical ring 5. After that the inner and outer flows are straightened by directing them through profiled blades of the inner and outer sections 6 of the stator 4. The slowdown of the flow in the center is eliminated by an exhaust cone 7. Finally, the sectional shape of the flow is changed from round to square or rectangular by passing the flow through supply channel. The proposed group of inventions also consists of a gas boosting unit 12 that is used for the implementation of the above-identified method, wherein the above-identified method and blowing unit 12 are used. The application of a group of inventions for the separation of bulk mixtures leads to a reduction in energy consumption, simplify the design of nodes and improving the quality of the fractional separation of the bulk mixture.

A half round dedusting apparatus for removes dust and debris from particulate material passing through the dedusting apparatus. The configuration of the dedusting apparatus includes a half round cylindrical housing in which is mounted a partial cone wash deck having a reverse partial cone deflector that is vertically moveable to vary the flow rate of particulate material passing over the wash deck. The product inlet port is preferably circular and directs contaminant-laden particulate material inside the deflector to pass over the surface of the wash deck. The housing has a greater diameter than the maximum diameter of the wash deck to establish a Venturi zone around the circumference of the wash deck. The wash deck and deflector are detachably mounted within the housing to allow removal thereof for ease of cleaning the wash deck and also the interior of the housing.

A half round dedusting apparatus for removes dust and debris from particulate material passing through the dedusting apparatus. The configuration of the dedusting apparatus includes a half round cylindrical housing in which is mounted a partial cone wash deck having a reverse partial cone deflector that is vertically moveable to vary the flow rate of particulate material passing over the wash deck. The product inlet port is preferably circular and directs contaminant-laden particulate material inside the deflector to pass over the surface of the wash deck. The housing has a greater diameter than the maximum diameter of the wash deck to establish a Venturi zone around the circumference of the wash deck. The wash deck and deflector are detachably mounted within the housing to allow removal thereof for ease of cleaning the wash deck and also the interior of the housing.

The invention relates to a screening device and a method for screening powders. The device comprises a screening space comprising a first chamber and a second chamber, which chambers are arranged adjacent and have a common partition wall. The device comprises a screen which is placed obliquely or vertically in the screening device, wherein the screen forms at least a part of the common partition wall. The first chamber comprises a raw material inlet, a drive gas inlet, a float gas unit, and a residual particle outlet. The second chamber comprises a product material outlet and a rotatable blade, wherein the blade comprises nozzles which are configured for blowing gas against the screen. In addition, the invention relates to an assembly comprising a first and second screening device, wherein the product material outlet of a first screening device is connected to the raw material inlet of the second screening device.