61results about "Flat flow vortex" patented technology

A system to facilitate separation and concentration of particles based on centrifugal force on suspended particles, including biological matter, which are made to flow in a vortex structure is provided. The centrifugal force urges larger particles to collect along outer portions of the vortex flow. Conversely, within a vortex structure, a radial hydrodynamic pressure drop is also amplified to urge smaller particles toward inner portions of the vortex flow. This force created by the pressure can reach magnitudes that encourage a sharp cut-off and improved resolution discrimination between particle sizes. Thus, separated streams of particles can be collected with both increased concentration and purification.

A device for degassing gas bubbles out of a liquid comprises a housing having a liquid inlet, a liquid outlet and a gas bubble outlet. The housing includes a spiral wall defining a spiral flow path for the liquid and a hydrophobic membrane above the spiral wall and between the spiral wall and the gas bubble outlet. The spiral wall forces inward liquid entering the housing through the inlet into a spiral flow along the spiral flow path, and causes an upward flow of the gas bubbles toward the hydrophobic membrane. A method for degassing gas bubbles out of a liquid, e.g., blood, e.g., during hemodialysis, hemofiltration and hemodiafiltration, and use of such a degassing device in an extracorporeal circuit for degassing gas bubbles out of liquid, e.g., blood, e.g., during hemodialysis, hemofiltration and hemodiafiltration, are disclosed.

This invention is based on size and mass separation of suspended particles, including biological matter, which are made to flow in a spiral channel. On the spiral sections, the inward directed transverse pressure field from fluid shear competes with the outward directed centrifugal force to allow for separation of particles. At high velocity, centrifugal force dominates and particles move outward. At low velocities, transverse pressure dominates and the particles move inward. The magnitudes of the two opposing forces depend on flow velocity, particle size, radius of curvature of the spiral section, channel dimensions, and viscosity of the fluid. At the end of the spiral channel, a parallel array of outlets collects separated particles. For any particle size, the required channel dimension is determined by estimating the transit time to reach the side-wall. This time is a function of flow velocity, channel width, viscosity, and radius of curvature. Larger particles may reach the channel wall earlier than the smaller particles which need more time to reach the side wall. Thus a spiral channel may be envisioned by placing multiple outlets along the channel. This technique is inherently scalable over a large size range from sub-millimeter down to 1 μm.

The present invention discloses a hydrocyclone flotation system comprising: a hydrocyclone body; air injection means for injecting air into water being supplied to the hydrocyclone body; drain water volume regulation means for regulating the volume of drain water discharged out of the hydrocyclone body to maintain a constant water level in the hydrocyclone body; suspended solids filtration means for taking suspended solids out of the hydrocyclone body, the suspended solids staying dispersed in water being supplied to the hydrocyclone body and then floating and gathering towards the vortex center of the water by the swirling flow of the water and air foam while the water passes through the hydrocyclone body. With such a hydrocyclone flotation system, a water pollution prevention system of the present invention can effectively treat suspended solids produced from a purification process of waste water, sewage, used water, etc., at a relatively low cost.

Apparatus, such as a flotation separation device, features a flotation cell or column configured to receive a mixture of water, valuable material and unwanted material; receive polymer-based materials, including polymer bubbles or beads, configured to attach to the valuable material in the mixture; and provide enriched polymer-based materials, including enriched polymer bubbles or beads, having the valuable material attached thereon.

A cyclone separator (40) includes a housing (42), in which a cyclone assembly (10) is contained. The housing (42) has an inflow chamber (44), an overflow chamber (46) and a discharge chamber (48). The cyclone assembly (10) has an inner cyclone liner (16) positioned concentrically within a cyclone chamber (12). A displacement means (52) is provided for displacing the inner cyclone liner (16) axially from an operative position in the cyclone chamber (12) to an inoperative position in the overflow chamber (46) of the housing (42). The cyclone chamber (12) has a larger internal diameter than the inner cyclone liner (16), therefore, when the inner cyclone liner is moved to the inoperative position, the flowrate through the cyclone assembly is increased.

The group of inventions relates to the technology for purifying liquids and gases by removal of contaminating multicomponent ingredients. The device comprises a housing comprising at least one hollow spiral element with a conical shape, with separation openings being formed in at least some of the turns of the spiral element, each of the openings communicating with a corresponding separation chamber. Arranged opposite the separation opening is a nozzle, which is intended for compensating for the mass and centrifugal moment of the fluid medium. A guide element around which a flow passes is mounted on the wall of the nozzle. The cross-sectional area and the radius of each successive turn is selected from the condition for maintaining an estimated value for the centrifugal moment of the substance to be purified. The method consists in that a flow of medium to be purified is spun by the above-described device. Contaminating components in each turn are positioned by coaxial layers. Layer-by-layer removal of the contaminating components via the separation openings is performed. A reduction in the centrifugal moment of the flow to be purified is compensated for by a clean layer of fluid medium being injected. Technical result: as complete purification of fluid media as possible.