A bin sweep comprising a first auger section configured to be movably mounted to a central support framework of a storage bin, and a second auger section operably engaged with the first auger frame such that the second auger section is moveable relative to the first section frame substantially along an axis.

A compact and transportable equipment adapted to be used for hydraulic fracturing operations on gas or oil fields includes a means for unloading powder polymer, a means for supplying a polymer powder to a silo, and a silo for storing polymer in powder form, the silo having inside a vertical screw located in a vertical pipe, the lower end of the shaft of the vertical screw extending outside of the silo. The equipment has a feed hopper of a polymer metering device, a device for metering out the powder polymer, at least one tank for hydrating and dissolving the dispersed polymer originating from the dispersing and grinding device, and at least one volumetric pump enabling injection and metering of the polymer solution. The lower end of the shaft of the vertical screw has a rotating ring, the rotating ring being perpendicularly fixed on the shaft and being equipped with at least three straight paddles, positioned perpendicularly to the horizontal plan of the ring.

An offloading vacuum system. The system has a tank to capture debris from an excavation site. The debris is pulled into the tank due to a blower pulling air into an attached hose. An internal conveyor within the tank conveys material to an offloading hub. The offloading hub has a ground-facing door which opens to deposit debris into an external conveyor. The external conveyor, when deployed, can move debris from below the tank to a dump container with a wall greater than a height of the tank.

A filter unit is connected between a tray and a discharging duct of a spiral conveyor. The filter unit includes a first filter (perforated metal) that is fixed at a position close to the outer periphery of a conveying spiral, and a second filter (mesh filter) that rotates on the outside of the conveying spiral and the first filter. A washing nozzle sprays a washing liquid on the second filter. The chips captured by the first filter are scraped by the rotating conveying spiral and delivered back to the conveying path and the chips passing through the first filter but captured by the second filter are removed by the washing nozzle and delivered back to the conveying path. The washing liquid is sprayed at a predetermined angle from the washing nozzle and collides with vanes arranged on the outer periphery of the second filter and provides rotational force on the second filter.

A conveying device for conveying material, in particular material having a temperature of 1500 C. to 3200 C., in particular for conveying thermally or thermo-chemically treated material, has a housing which has a material inlet and a material outlet. The material can be conveyed from the material inlet to the material outlet along a conveying path by means of a conveying device. Along the conveying path, such surfaces that come into contact with the material to be conveyed are provided, at least in certain areas, by a material that is a graphite material or a material with graphite-like properties.