There are provided hoppers for separating slack from a mixture of product and slack, and systems and method using such hoppers. Each hopper comprises: an internal gate configured to prevent the passage of product therethrough, but to allow the passage of slack therethrough; and, an external gate configured to prevent the passage of product and the passage of slack therethrough; the internal gate and the external gate being moveable between respective open and closed positions; the hopper configured such that: when the internal gate and external gate are in their respective closed positions and the mixture is introduced into the hopper, product is retained by the internal gate whilst slack passes through the internal gate and is retained by the external gate; and, when the external gate and internal gate are each in their respective open positions, product may exit the hopper along a first path.

An object-sorting apparatus includes a housing that extends from a top end to a bottom end, at least one vibration element, and a plurality of stages arranged in a vertical sequence in the housing between the top end and the bottom end. At least one of the stages includes a sorting base that at least partially defines a floor of the at least one stage. The sorting base is coupled to the at least one vibration element, and is configured to receive thereon a mixture of objects having different sizes, including a target size associated with the at least one stage. The stage also includes apertures defined in and extending through the sorting base and into flow communication with a next lower stage. The apertures are sized to receive therethrough, from the mixture, objects having a size smaller than the target size associated with the at least one stage.

Tables for sorting agricultural producta. The tables include legs, a deck, and a vibration generator. The deck is supported on the legs. The deck includes a loading end, a terminal end, and a grate. The terminal end is opposite the loading end. The grate extends between the loading end and the terminal end and defines the grate openings. The vibration generator is mounted to the deck and configured to vibrate the deck. The grate supports agricultural products that are larger than the grate openings. Agricultural products that are smaller than the grate openings pass through the grate. The vibration generator vibrating the deck causes the agricultural products to move across the deck over the grate.

Aggregate washing systems are described including mechanisms for slurrying, washing and/or dewatering aggregate material.

The invention relates to a method for setting an operating state of at least one mobile mineral machining plant, in particular a mobile mineral material crusher (10), wherein a processing device (100) is provided, to which an input unit (90) is assigned, wherein at least one characteristic material value of the feed material (KM) to be machined is entered into the input unit (90), wherein at least one characteristic material value (KE) of at least one end material to be produced using the mineral machining plant is entered into the input unit (90), wherein a target machine parameter (SP) or a target machine parameter set containing several target machine parameters (SP) is generated in the processing device (100), taking into account the characteristic material value of the feed material (KM) to be machined and the characteristic material value of the end material (KE) to be produced, and wherein the at least one target machine parameter (SP) or the target machine parameter set is transferred to a control device (130) of the mineral machining plant and/or displayed on a display device. Such a process significantly facilitates adapting the mineral machining plant to changing crushing tasks for a machine operator.

A multi-deck screening assembly includes upper and lower screen decks, each having first and second deck sections. The upper deck's first deck section has first-size grading apertures, and its second deck section is downstream of the first deck section with second-size grading apertures larger than the first-size apertures. The lower deck's first section has third-size grading apertures and its second section is downstream of its first section with fourth-size grading apertures larger than the third-size apertures. A gap between the lower deck's first and second sections allows oversize material from the lower deck's first section to pass through to a first collection region. A diverter is positioned between the upper and lower decks and over the gap, whereby material from the upper deck collected on the diverter passes onto the lower deck's second section, thereby preventing undersize material that passes through the upper deck from passing directly through the gap.

Devices, systems, and methods for transporting or transferring insect pupae in an aqueous solution are described. The system includes a tank containing a solution with insect pupae, a transfer chamber having an outlet at a bottom portion of the chamber, a solution inlet, an evacuation channel, and a depth measurement system. A tube fluidly connects to tank and the transfer chamber. An evacuation device connected to the evacuation channel removes air from the transfer chamber and generates a vacuum therein to draw the solution through the tube into the transfer chamber.

A collection system for collecting materials, such as cuttings, drilling fluid, wellbore fluid, lost circulation material, hydrocarbons and mixtures thereof, from a vibratory separator in a collection trough and facilitating movement of the collected materials to a discharge conduit utilizing a squeegee member. The squeegee may be moved along a track between the discharge conduits to move the material in the collection trough to the discharge conduits. The squeegee may be moved pneumatically or hydraulically. The squeegee may also be moved along the track magnetically utilizing a magnetic piston train. Movement of the squeegee can be modulated based on the rate of material into the collection trough.

A collection system for collecting materials, such as cuttings, drilling fluid, wellbore fluid, lost circulation material, hydrocarbons and mixtures thereof, from a vibratory separator in a collection trough and facilitating movement of the collected materials to a discharge conduit utilizing a squeegee member. The squeegee may be moved along a track between the discharge conduits to move the material in the collection trough to the discharge conduits. The squeegee may be moved pneumatically or hydraulically. The squeegee may also be moved along the track magnetically utilizing a magnetic piston train. Movement of the squeegee can be modulated based on the rate of material into the collection trough.

A white cap removal unit for a grain cleaner for eliminating multiple steps otherwise necessary to properly clean grains. The white cap removal unit for a grain cleaner includes a separator assembly including a grain receiver having a side wall, an open top, an open bottom, an open side and a passageway extending therethrough, and also including a planar mesh screen removably disposed in the passageway for removing white cap from grain.