A proppant metering and loading apparatus for a hydraulic fracturing blender unit is provided. A continuous loop conveyor belt receives proppant from a source location on the blender, such as a hopper, and delivers the proppant to a blender device of the blender. A measurement device (e.g. weigh scale) measures and provides an indication of amount (e.g. weight, volume and/or density) of the proppant delivered to the blender device by the conveyor belt.

A compact modular mobile aggregate processing system configured with no stand-alone inter-plant conveyors for decreasing the footprint of the system and an infinitely adjustable flow diverter(s) for increasing the control of and variation of output characteristics of the system; the system further including specialized folding conveyors.

A compact modular mobile aggregate processing system configured with no stand-alone inter-plant conveyors for decreasing the footprint of the system and an infinitely adjustable flow diverter(s) for increasing the control of and variation of output characteristics of the system; the system further including specialized folding conveyors.

An apparatus including a supply system that is adapted for supplying at least a first explosives material, the supply system comprising: at least a first explosives material delivery mechanism; a bin having an upper end, a lower end, and an interior volume that provides at least a first compartment for storing an explosives material, the first compartment having a corresponding lower end; at least a first outlet provided at the lower end of the compartment for feeding the first explosives material from the first compartment to the first explosives material delivery mechanism; at least a first removable cover for a second outlet at the lower end of the compartment, and installable thereon and removable therefrom; a port provided at the upper end of the bin by which the explosives material is loadable into the first compartment; and an operation tool that is adapted to allow installation and removal of the first removable cover by way of the port without requiring any personnel to fully or partially enter into the bin.

An apparatus including a supply system that is adapted for supplying at least a first explosives material, the supply system comprising: at least a first explosives material delivery mechanism; a bin having an upper end, a lower end, and an interior volume that provides at least a first compartment for storing an explosives material, the first compartment having a corresponding lower end; at least a first outlet provided at the lower end of the compartment for feeding the first explosives material from the first compartment to the first explosives material delivery mechanism; at least a first removable cover for a second outlet at the lower end of the compartment, and installable thereon and removable therefrom; a port provided at the upper end of the bin by which the explosives material is loadable into the first compartment; and an operation tool that is adapted to allow installation and removal of the first removable cover by way of the port without requiring any personnel to fully or partially enter into the bin.

A compact modular mobile aggregate processing system configured with no stand-alone inter-plant conveyors for decreasing the footprint of the system and an infinitely adjustable flow diverter(s) for increasing the control of and variation of output characteristics of the system; the system further including specialized folding conveyors.

A compact modular mobile aggregate processing system configured with no stand-alone inter-plant conveyors for decreasing the footprint of the system and an infinitely adjustable flow diverter(s) for increasing the control of and variation of output characteristics of the system; the system further including specialized folding conveyors.

This invention quickly supplies a predetermined amount of powder from a hopper to a recoater. A powder supply apparatus includes, as its feature, a hopper, a powder spreader, a powder replenisher, and a pivoting unit. The hopper of the powder supply apparatus stores a powder. The powder spreader spreads the powder on a shaping surface. The powder replenisher of the powder supply apparatus is provided between the hopper and the powder spreader, and replenishes the powder spreader with a predetermined amount of powder. The pivoting unit of the powder supply apparatus causes the powder replenisher to pivot.

A material distribution apparatus and preparing an artificial stone plate using the material distribution apparatus includes a belt material distribution device including a material distribution hopper and a conveying belt. The conveying belt is located at a lower portion of the material distribution hopper. An upper surface of the conveying belt is inclined. The material distribution hopper has a first wall and a second wall. The first wall is an inclined wall with an upper end away from the second wall. A discharge outlet is provided below the second wall. An upper portion of the second wall is vertically mounted, and a lower portion of the second wall has a circular arc portion and a discharge portion which forms the discharge outlet with a surface of the conveying belt therebetween.

An orbital plant material feed assembly includes a drum structure and hopper assembly. An external surface of the drum structure has a curved shape and includes a peripheral groove. A width of the peripheral groove varies along the external surface of the drum structure. The hopper assembly may define a compression space between the drum structure and a portion of the hopper assembly that covers a portion of the peripheral groove.