A method and apparatus are disclosed for a mixing system with a recirculation pump and a sensor configured to measure a property of a fluid discharged from the recirculation pump, wherein the sensor may transmit the property to a control system to allow an operator to adjust the mixing system in response to changes in the measurement signal.

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 and suction system positioned above the mixer. Further, the mitigation system 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 portable mixer that has a first auger, a second auger, a motor, a material loading location, where material may be loaded into the mixer, and a dispensing conduit. The motor powers both the first auger and second auger. Further, the second auger may rotate in a first rotational direction and a second rotational direction and the second auger substantially prevents material from exiting a dispensing conduit when the second auger rotates in the first rotational direction and the second auger distributes material through the dispensing conduit when the second auger rotates in the second rotational direction.

The invention relates to an apparatus (110) for producing foamed building materials, comprising a gas supply unit (112), a suspension supply unit (150-156), and a mixing chamber (118), the apparatus (110) further comprising a control and/or regulating unit (136) which has means (116, 124, 130, 134, 146,) for supplying values of a plurality of input parameters, based on which at least a temperature of the dispersion and an air pressure in an environment of the apparatus (110) can be inferred, the control and/or regulating unit (136) being further configured to influence at least one output parameter, by means of which the ratio of the volumes and/or masses and/or densities of gas and suspension supplied per unit of time can be adjusted. The invention further relates to a corresponding method.

A system provides building materials including a packaging, a lifting device and a mixing and conveying device. The packaging can be positioned by the lifting device via the mixing and conveying device in such a way that a total height of the system is less than 230 cm.

A mobile aggregate hopper for a volumetric and gravimetric mixer having arcuate longitudinal walls for holding and isolating aggregate. The mobile aggregate hopper has a base integral with the arcuate longitudinal walls with an aggregate transfer conveyor and means for attachment to a trailer or chassis having wheels. The single sheet structure of the longitudinal arcuate side walls minimizes welding and mechanical joints during manufacturing and provides a hopper with high strength and capacity and low overall weight.

Systems and methods for preparing construction material mixtures. A container can include a flexible body having an interior for receiving and holding construction material mixture components to be mixed. The construction material mixture components can be mixed in the interior by rotating a mixing tool. The flexible body is collapsible for forcing the construction material mixture out of a mouth of the container. The flexible body can be everted to facilitate cleaning the interior of the flexible body. The system can also include a stand, a mixing tool, a funnel, and/or a measuring cup.

Mobile mixing devices, mobile mixing systems, and related methods are provided. A mobile mixing device can include a frame and a mixing drum securable to the frame. The mixing drum can include a body that forms an internal cavity and can have a forward end and a bottom end. The mixing drum can also include a mouth at the forward end of the body that provides access to the internal cavity of the mixing drum. The mobile mixing device can include a heater support arm having a heater secured to an end of the heater support arm that is distal from the mixing drum. The mixing drum can be used to process cement material when the heater support arm is in a stow-away position or used to process asphalt when the heater support arm is in a heating position with the heater facing into the mouth of the mixing drum after loading of the asphalt.

A material sprayer includes a hopper and a shaker assembly mounted onto a sidewall of the hopper. The hopper includes at least one sidewall that extends along a first plane. The shaker assembly includes a resilient bracket, an electromagnetic coil, and an armature. The resilient bracket is mounted to the sidewall of the hopper and includes first and second ends and a curved portion. The electromagnetic coil is mounted to a portion of the resilient bracket and is configured to generate a magnetic field in response to a current from a power source. The armature is mounted to a portion of the resilient bracket such that the armature is able to move relative to the electromagnetic coil along an acceleration axis that is orthogonal to the first plane of the sidewall of the hopper.

A sealed disposable concrete vibrator assembly includes a hollow cylindrical main housing enclosing a shaft having an eccentric mid portion sized to rotate therewithin. Sealed bearings supporting the shaft are encased within an adaptor housing and a tip cover attached concentrically to proximal and distal ends, respectively, of the main housing. Outer surfaces of the adaptor housing and tip cover protrude into the main housing for frictional engagement therewith, while inner surfaces thereof provide channels to encase the bearings. An oil seal compressed against a flange integral to the adaptor housing prevents intrusion of contaminants. A circumvolving adaptor is coupled through the oil seal to the driven end of the shaft. The assembly may be hermetically sealed by permanent attachment of the adaptor housing and tip assembly to the main housing.