An inner plastic liquid container (25) includes a filling neck (41) in an upper wall (33) for filling the inner container and a front side outlet neck (40) for an outlet armature. A lower wall (28) interconnecting two side walls (30, 31), a rear wall (32) and a front wall (29) supports the container on a transport pallet (21) pallet base (26), which has an outer mantle (24) for receiving the container. The outlet neck is at a hopper bottom (39) of an outlet hopper (34) in the lower bottom wall. The outlet hopper has a front hopper wall (35) and inclined lateral hopper walls (36, 37) that are arranged at a hopper angle and each extend from a keel-shaped hopper base (38) to a lower edge (46, 47) of a side wall. A keel line (63) rises at another hopper angle from an outlet neck toward the rear wall.

An alternative bottom drop and straight tee discharge from bulk tank conveying granular material, the tee having extensions for the automatic and manual operations of a disc valve, pivotally located within the horizontal section of the tee, during functioning. The disc valve may be manually operated, or pivoted through motorized operations, to allow for the alternative flow of bulk material from the vehicle hopper. The disc valve has an annular disc, integrally formed with upright supports, that are bearing mounted by shafts to the sidewalls of the structured tee.

An alternative bottom drop and straight tee discharge from bulk tank conveying granular material, the tee having extensions for the automatic and manual operations of a disc valve, pivotally located within the horizontal section of the tee, during functioning. The disc valve may be manually operated, or pivoted through motorized operations, to allow for the alternative flow of bulk material from the vehicle hopper. The disc valve has an annular disc, integrally formed with upright supports, that are bearing mounted by shafts to the sidewalls of the structured tee.

A barrel is capable of vacuum loading and unloading, gravity unloading and loading, and pneumatic unloading. A roll-off skid is coupled to the barrel.

A barrel is capable of vacuum loading and unloading, gravity unloading and loading, and pneumatic unloading. A roll-off skid is coupled to the barrel.

Bins for storing and/or dispensing a material, such as preferably a flowable material. In some embodiments, the bin may comprise a body comprising an inner storage chamber configured to receive and store a flowable material therein. A forklift base may be coupled to the body and may comprise one or more pairs of forklift slots configured to receive forks of a forklift to allow the storage bin to be lifted and transported. A dispensing gate may be slidably positioned adjacent to a dispensing opening in the body to allow for positioning between a closed configuration in which the flowable material is blocked from being dispensed from the inner storage chamber and an open configuration in which the dispensing gate is moved away from the dispensing opening to allow the flowable material to exit the inner storage chamber.

Bins for storing and/or dispensing a material, such as preferably a flowable material. In some embodiments, the bin may comprise a body comprising an inner storage chamber configured to receive and store a flowable material therein. A forklift base may be coupled to the body and may comprise one or more pairs of forklift slots configured to receive forks of a forklift to allow the storage bin to be lifted and transported. A dispensing gate may be slidably positioned adjacent to a dispensing opening in the body to allow for positioning between a closed configuration in which the flowable material is blocked from being dispensed from the inner storage chamber and an open configuration in which the dispensing gate is moved away from the dispensing opening to allow the flowable material to exit the inner storage chamber.

A proppant delivery system for use at a hydraulic fracturing site to prepare a proppant mixture for subsequent delivery to a wellbore at the hydraulic fracturing site comprises two types of proppant storage containers, including silo type and box-like container type each of which normally has a dedicated system to dispense proppant, arranged in an array usually employed in a silo-only delivery system where parallel rows are formed and interrupted by a feed conveyor extending parallel to and disposed between the rows. A support stand carries the box-like container to one side of the feed conveyor with a bottom discharge of this container held at a spaced height above a ground surface.

A proppant delivery system for use at a hydraulic fracturing site to prepare a proppant mixture for subsequent delivery to a wellbore at the hydraulic fracturing site comprises two types of proppant storage containers, including silo type and box-like container type each of which normally has a dedicated system to dispense proppant, arranged in an array usually employed in a silo-only delivery system where parallel rows are formed and interrupted by a feed conveyor extending parallel to and disposed between the rows. A support stand carries the box-like container to one side of the feed conveyor with a bottom discharge of this container held at a spaced height above a ground surface.

In an example implementation, a build material hopper for a 3D printing system includes a container housing, a top for receiving build material, and a bottom. The build material hopper also includes a fluidizing drain assembled in the bottom of the container housing to aerate build material within the drain to facilitate passing build material through the drain.