Planetary gear mechanisms require internal toothed gears in housings. A drive rotor and driven rotors are accommodated in a mixing space in a housing, and chemical inflow paths to the mixing space are formed in an upper portion of the housing. A mixture outflow path is formed in a lower portion of the housing. The mixing space is formed to allow the drive rotor and the driven rotors to rotate and to regulate the positions of the drive rotor and the driven rotors. Meshing the drive rotor with the driven rotors allows the driven rotors to rotate opposite to the rotating direction of the drive rotor accompanying the rotation of the drive rotor while the lower ends of the driven rotors are located above a bottom portion of the mixing space and the upper ends of the driven rotors are located below the lower surface of the lid body.

The present disclosure is directed to an agitating system having a sub-hopper configured to receive particulate material, an agitator disposed within the sub-hopper and configured to promote movement of the particulate material through the sub-hopper, and a deflector configured to block a portion of the particulate material from exerting a force onto the agitator as the particulate material flows through the sub-hopper. The deflector is positioned such that the agitator extends beyond a first distal edge and a second distal edge of the deflector along a lateral axis.

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 capable of 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.

A polymer dispersion system for use in a hydraulic fracturing operation is disclosed. The system comprises (a) a tank assembly comprising an ingress, an egress, and an interior volume for collecting mother solution; (b) a first transfer pump coupled with the egress of the tank assembly: and (c) a second transfer pump coupled with the egress of the tank assembly. The first transfer pump is configured for coupling to a missile unit and a blender unit downstream thereof, but in fluid communication with only one of such units at any given time when coupled. A method of operating said polymer dispersion system is also disclosed.

A system for generating and dispensing plural component materials includes a controller operatively connected to dispense valves and return valves. The return valves are in respective open states to allow constituent materials to circulate back to a source and are in respective closed states to block circulation. The dispense valves are in respective open states to allow mixing of the constituent materials to form the plural component material and in respective closed states to prevent generation and dispense. The controller implements a delay between closing the return valves and opening the dispense valves to build pressure in the system prior to generating and dispensing the plural component material.

The present disclosure provides a microbubble generation container and a water discharging device. The container includes a barrel main body, an excitation member and an elastic member. The barrel main body is provided with a water inlet, a water outlet and a connecting port. The excitation member is movably arranged in the barrel main body, and includes a partition plate and a sealing portion. The partition plate divides an inner space of the barrel main body into a first chamber and a second chamber, and a water passage for communicating the first chamber with the second chamber is arranged on the partition plate. The water passage enables water flowing by to form water droplets and be ejected. The sealing portion opens and closes the connecting port with a motion of the excitation member.

A slide gate assembly includes a mounting plate with a through opening and an upper surface, and a top plate with a through opening and lower surface, wherein the through opening of the top plate aligns with the through opening of the mounting plate. A slide plate is mounted between the lower surface of the top plate and the upper surface of the mounting plate, wherein the slide plate is slidable between a closed position and an open position, wherein, in the closed position the slide plate blocks material passage from the opening of the top plate to the opening of the bottom plate, wherein, in the open position, the slide plate permits material passage from the opening of the top plate to the opening of the bottom plate.

An additive delivery system may incorporate a cartridge system, including a container cap and a reservoir assembly that provides for storage of an additive. The container cap includes a mixing nozzle for mixing of the additive with a base fluid as the base fluid flows from the base fluid container through the cartridge. A one-way valve prevents backflow of base fluid and/or mixed base fluid/additive from an area downstream of the mixing nozzle such that the base fluid supply remains in a pure state.

An apparatus for preparing a reagent solution includes an enclosure and a container disposed within the enclosure. The container defines an internal cavity having a compressible volume and defines a passage providing fluidic communication between the internal cavity and the exterior of the container. Optionally, a compressible member is disposed within the internal cavity. A reagent is disposed within the internal cavity.

Disclosed is a chemiluminescence measurement apparatus that includes: a support member configured to support a cartridge for measuring a test substance contained in a specimen by chemiluminescence measurement; a motor configured to rotate the support member so as to rotate the cartridge such that a process required for the chemiluminescence measurement proceeds in the cartridge; and a light receiver configured to receive light generated by chemiluminescence in the cartridge that is supported by the support member rotated by the motor. The cartridge supported by the support member and a light receiving surface of the light receiver are disposed inside a dark space surrounded by a light-shielding portion, and the motor is disposed outside the dark space.