A stirring device is adapted to be used for a water storage system. The stirring device includes a tube unit and a stirring unit. The tube unit includes a rigid tube member, and a flexible tube member adapted for interconnecting the rigid tube member and an inlet of the water storage system. The stirring unit includes a center rod extending rotatably into the rigid tube member along an longitudinal direction of the rigid tube member, a support subunit positioning the center rod within the rigid tube member, a driver fan subunit mounted to the center rod and adapted to be driven by water for actuating rotation of the center rod, and a stirring member mounted co-rotatably to the center rod and adapted for stirring sediments in the water.

A mixing arrangement, and pump for supplying small particles suspended in a liquid to form slurry for delivery includes a container, a mixing and delivery pump having a first shaft, a rotor connected to the first shaft and arranged at an inner bottom of an inner space of the container, a first power device connected to the first shaft, and a stator having stator blades. The stator surrounds the first shaft. The arrangement includes a pump having an inlet, which is located in a stator space between two stator blades, and an outlet, and an outlet pipe having a second inlet opening connected to the outlet and a second outlet opening located outside the inner space.

The boundary layer drum mixer is an apparatus which can pass through the narrow top port of a standard chemical drum or bulk container without the need to disassemble any part of the mixer or the vessel. The invention is an enclosed system with an internal arrangement of impellers and stators which draw liquid-based media from the adjacent vessel and strategically distributes it throughout the vessel through an array of outlet ports. The strategic mixing requires low energy input, minimizes the risk of media aeration and works with a wide range of fluid levels. The apparatus imparts no net external torque, and therefore, requires no rigid mounting. The upper impeller flow positively entrains particles or liquid phases that tend to float. The lower impeller flow positively entrains particles or liquid phases that tend to sink and/or remain static in boundary layers against or near the vessel walls and base.

Biomass feedstocks (e.g., plant biomass, animal biomass, and municipal waste biomass) are processed to produce useful products, such as fuels. For example, systems are described that can convert feedstock materials to a sugar solution, which can then be fermented to produce a product such as a biofuel.

The present application provides an impeller assembly and battery slurry mixing and stirring equipment having same. The impeller assembly provided in the present application includes: a stirring impeller, wherein the stirring impeller includes a rotating shaft and blades arranged around the rotating shaft along the circumferential direction; a surrounding plate, wherein the surrounding plate is arranged around the outer periphery of the stirring impeller, and the surrounding plate is provided with a plurality of discharge holes, the surrounding plate further includes a plurality of dispersing teeth, the plurality of dispersing teeth are arranged facing a rotation direction of the blades, and the plurality of dispersing teeth are distributed around the periphery of the plurality of discharge holes.

The present application provides an impeller assembly and battery slurry mixing and stirring equipment having same. The impeller assembly provided in the present application includes: a stirring impeller, wherein the stirring impeller includes a rotating shaft and blades arranged around the rotating shaft along the circumferential direction; a surrounding plate, wherein the surrounding plate is arranged around the outer periphery of the stirring impeller, and the surrounding plate is provided with a plurality of discharge holes, the surrounding plate further includes a plurality of dispersing teeth, the plurality of dispersing teeth are arranged facing a rotation direction of the blades, and the plurality of dispersing teeth are distributed around the periphery of the plurality of discharge holes.

Guard for impellers, methods of using the guards, impeller assemblies including the guards mounted to impellers, impeller systems, and biocontainer systems including the impeller systems, are disclosed.

Guard for impellers, methods of using the guards, impeller assemblies including the guards mounted to impellers, impeller systems, and biocontainer systems including the impeller systems, are disclosed.

A method and apparatus for injecting a gas into a liquid in which a rotating helical impeller within a draft tube submerged in the liquid creates a liquid flow within the draft tube. Gas bubbles are injected into the draft tube either above or below or alongside the helical impeller or in all three locations. The liquid is drawn into the draft tube with a superficial velocity greater than a substantially uniform terminal ascent velocity of the gas bubbles to allow entrainment of undissolved gas bubbles in the bulk liquid into the liquid being drawn into the draft tube. The gas bubbles are injected with a uniform diameter of between about 10.0 microns and about 1.0 millimeters. The small bubble size enhances the dissolution of the gas into the liquid and also allow the entrainment of the gas into the liquid being drawn into the draft tube.

The boundary layer drum mixer is an apparatus which can pass through the narrow top port of a standard chemical drum or bulk container without the need to disassemble any part of the mixer or the vessel. The invention is an enclosed system with an internal arrangement of impellers and stators which draw liquid-based media from the adjacent vessel and strategically distributes it throughout the vessel through an array of outlet ports. The strategic mixing requires low energy input, minimizes the risk of media aeration and works with a wide range of fluid levels. The apparatus imparts no net external torque, and therefore, requires no rigid mounting. The upper impeller flow positively entrains particles or liquid phases that tend to float. The lower impeller flow positively entrains particles or liquid phases that tend to sink and/or remain static in boundary layers against or near the vessel walls and base.