A mixer vehicle comprises a chassis and mixer drum coupled with the chassis. The mixer drum includes a first cylindrical inner volume and a second cylindrical inner volume. The first cylindrical inner volume and the second cylindrical inner volume are fluidly coupled with each other at passageways positioned at both ends of the mixer drum. The mixer drum further comprises a first mixer screw positioned within the first cylindrical inner volume and a second mixer screw positioned within the second cylindrical inner volume. The first mixer screw and the second mixer screw are configured to be driven to rotate to drive a slurry material between the first cylindrical inner volume and the second cylindrical inner volume to mix the slurry material.

According to some embodiments, a system and method for dispensing a floor coating in a specified ratio of multiple components is disclosed. The system and method may set and maintain a desired ratio of the multiple components by controlling, with a controller, a drive rate of respective pumps configured for propelling the components from a reservoir to a mixer or a dispenser. The controller may be responsive to at least one of a measured actual drive rate, an environmental condition, an actual usage of each component, and an operational parameter of the system, for adjusting a drive rate of the respective pumps to compensate for discrepancies that may affect the ratio of the multiple components.

Fodder mixing wagon with a mixing container and at least one mixing member arranged rotatable therein for fodder components and a sensor system arranged to co-rotate on the mixing member for examining at least one of the fodder components and/or a fodder mixture formed therefrom. A data transmission system with a transmitter a receiver which are associated with one another in a co-rotating and not co-rotating arrangement for wireless data transmission to and/or from the sensor system; and/or an electrical generator for supplying power to the sensor system. The transmitter and receiver are arranged such that the wireless data transmission is within the mixing container; and the generator is arranged on the stator side to co-rotate with the mixing member and on the rotor side is coupled not to co-rotate. Data transmission is provided with a low transmission power. Inductive data and power transmission may be used.

A mixing drum includes a body defining a head aperture and a discharge aperture opposite the head aperture, a head coupled to the body and extending across the head aperture, and a mixing element positioned within the volume and coupled to the body. The head and the body define a volume. The body is formed from at least a first section and a second section. The first section overlaps the second section.

A mobile submersible mixer comprising a mobile platform, frame or chassis with a plurality of wheels, with one or more mixing jets or systems mounted thereon. The apparatus also may comprise an aeration system and real-time sampling system. The apparatus is introduced into a pit or tank, typically by rolling the mixer down a ramp into the pit or tank.

A dual container concrete mixing transport truck chute washout system with (a) a chute attachable funnel container having an open mouth with an upper rim, an attachment for detachably attaching the funnel container below an exit end of a concrete truck concrete chute, and a material outlet connector to drain liquid and debris from the funnel container, and (b) a truck mountable holding container having an upper portion that is adapted to store the funnel container when the funnel container is not affixed to the chute, a lower portion for collection of fluid and solid materials, a seat located between the upper space and the lower portion, a material inlet connector, and a fluid drain valve for draining fluid from the holding container, wherein the upper rim of the funnel container is adapted to sit on the seat of the holding container to act as a lid.

A system for use with a gunite rig to capture airborne gunite type materials, particularly those containing silica, during the preparation of the gunite. In one respect, as the bags of silica-containing material are placed in the mixing section of the gunite rig and ripped open, airborne gunite dust is captured by a hood, separation, and suction system positioned above the mixer. The mitigation system also includes a plenum box and suction system positioned adjacent the mouth of a gunite pot to capture gunite dust generated as the mixed gunite material falls from a hopper into the gunite pot. A separator positioned upstream of a dust collection apparatus separates the larger heavier particles from the lighter ones.

In accordance with one embodiment, a method is provided that includes providing a liquid nitrogen storage system configured to cool a supply of liquid nitrogen to a temperature below the vapor point of liquid nitrogen; coupling a piping system with the liquid nitrogen storage system to convey a portion of the supply of liquid nitrogen from the liquid nitrogen storage system; coupling the piping system with a liquid nitrogen control valve configured to control a flow of liquid nitrogen to at least one liquid nitrogen dispensing head; disposing the at least one liquid nitrogen dispensing head above a conveyance device operable to convey an aggregate stream of a concrete batching plant during use; and disposing the at least one liquid nitrogen dispensing head in a position to dispense an output flow of liquid nitrogen onto the aggregate stream of the concrete batching plant during use.

A system for producing a wellbore fluid including a process fluid source, a rotating apparatus, and a motor directly coupled to the rotating apparatus. The motor is configured to receive a coolant and transfer heat from the motor to the coolant. The rotating apparatus is configured to receive process fluid from the process fluid source and mix the process fluid received from the process fluid source with one or more additives to produce a wellbore fluid. The coolant transfers heat to the process fluid, the wellbore fluid or both.

A proppant delivery assembly receives and supports a plurality of containers having proppant stored therein. A cradle has a top surface which receives and supports the plurality of containers when positioned thereon. The cradle enables the plurality of containers to dispense the proppant stored therein. A proppant mover is positioned to underlie and extend along the top surface of the cradle aligned with the plurality of containers to receive proppant from the plurality of containers. The proppant mover carries proppant away from the plurality of containers. A chute is coupled to the cradle for receiving proppant from the proppant mover and directing the proppant to a blender hopper. A hood assembly is disposed at an end of the chute opposite the proppant mover for directing a vacuum air flow that removes a volume of air containing proppant dust particles directed from the chute. The hood assembly includes a curtain extending about a perimeter of the hood assembly and downward therefrom to at least partially define the volume of air being removed by the hood assembly.