546 results about "Gravity flow" patented technology

A pressure actuated flow control valve for an infusion catheter permits gravity flow of a liquid through the catheter and into a patient while resisting back flow of blood from the patient and into the catheter. The valve has a hemispherical body with an outstanding circumferential flange and a normally closed, diametric slit. The slit is longer on the convex outer surface than on the concave inner surface. Dome thickness diminishes in the area adjacent the slit, reducing total apical deflection upon collapse of the slit toward the concave surface. An inner orthogonal rib biases the slit closed. Upon application of a predetermined pressure, the slit opens toward the concave surface to permit forward fluid flow. At lower pressures, the slit closes to check fluid flow. Greater reverse pressure is required to collapse the slit toward the concave surface to permit reverse fluid flow.

A portable, personal apparatus for treating drinking water comprises a generally tubular or cylindrical filter housing containing filtration media and water-permeable screen or mesh or felt or membrane or netting layer at the top and bottom ends of the filter. The design of the apparatus involves the bottle exterior and interior contouring to the filter and enables the efficient and rapid gravity flow of water in through the filter. The apparatus may be configured such that water is first passed through a top reservoir designed to receive water, followed by a porous mesh, followed by granular filtration and antimicrobial media agitated by turbulent motion of influent water, followed by a porous mesh before reaching a durable and reusable water containment vessel.

A reactor has an aerobic tank, an anoxic tank and a sealed membrane tank with conduits for circulating mixed liquor between them. Permeation starts when the mixed liquor reaches a high level and stops when the mixed liquor reaches a low level. A sensor, for detecting the mixed liquor level, may stop and start permeation. Pressure builds in the membrane tank when membrane air is on. Transmembrane pressure is also provided by gravity flow or siphon. Membrane air generates an air lift which drives the mixed liquor circulation. The total amount of air provided by an air source is divided and varied in time between the membrane aerator and the process aerator. The process aerator acts as a screening inlet to the conduit to the membrane tank. Chemical maintenance cleaning is provided by gravity flow.

A well pump has a riser gas separator for removing large slugs of gas prior to reentry into the pump. The riser extends upward from a barrier that is located in the well. The riser has an inlet that is located above an effective intake of the pump. Well fluid must turn to flow down to the pump, with gas separating by gravity flowing upward while the liquid flows downward. The downhole assembly has various configurations to assure that fluid flows past the motor for cooling.

A gravity fed carbon block water filter includes activated carbon particles; a binder material interspersed with the activated carbon particles; and a lead scavenger coupled to at least one of the activated carbon particles and binder material, the lead scavenger being for removing lead from water, where a lead concentration in a final liter of effluent water filtered by the filter is less than about 10 μg/liter after about 151 liters (40 gallons) of source water filtration, the source water having a pH of 8.5 and containing 135-165 parts per billion total lead with 30-60 parts per billion thereof being colloidal lead greater than 0.1 μm in diameter, and where the water has an average flow rate of at least 0.1 liter per minute through the filter with a head pressure of between approximately 0.1 and 1.0 psi.

Provided are robots for managing inventory of arbitrary size, shape, weighted, or other distinct featured items. The robots dynamically and adaptively manage inventory for items stacked atop one another, items stacked behind one another, items that are horizontally arranged, items that are dispensed from a gravity flow dispenser, items that are dispensed from a back-to-front push dispenser, and items that are loosely contained within a bin. The robots have a sensory array from which dimensions of a particular arrangement and dimensions of a particular item in the particular arrangement can be calculated. The calculated dimensions can include length, width, or height of a particular arrangement and a particular item or force imposed by the particular arrangement and mass of the particular item. Based on these dimensions, the robots can dynamically track different item inventories without counting each individual item.

The invention discloses a method for continuously preparing fiber/ ionic liquid solution. It comprises following steps: mixing fiber with ionic liquid solution into soft muddy shape, feeding said soft muddy mixture into feed port of screw extruder for continous dissolution, getting fiber/ ionic liquid solution at outlet port of screw extruder. The metioned mixture contains no free ionic liquid solution, and does not possess property of gravity flow and deposition. The invention is characterized in that it employs screw extruder to process said muddy mixture, the solution efficiency of fiber can be increased and time can be reduced by making use of cutting action of extruder, and the degradation of fiber can be avoided. If extruding dissloution process and spinning/ filming process can be matched together, the heating time for material can be identical, which will stabilize product quality.

A bundle assembly for vertical, gravity flow driven polymerization reactors for combinations of high viscosity, high throughput, and thin polymer films is provided. The bundle assembly includes static internal components that provide large areas of free liquid surfaces in contact with the atmosphere of the reactor while still attaining sufficient liquid holdup times for polymerization to take place. The bundle assembly includes one or more stationary film generators. The bundle assembly further includes one or more stationary arrays of film support structures. Each of the film support structures has a first side and a second side. Both sides of the film support structure are coated with flowing polymer. The vertical arrangement of components in the bundle assembly cause the polymeric melt to cascade down the vertical length of a reaction vessel interior that incorporates the bundle assembly. The present invention also provides a polymerization reactor that incorporates the assembly of the invention and a method of increasing the degree of polymerization of a polymer melt by using the assembly of the invention.

A gypsum-based mortar for plastering is prepared from semi-hydrated gypsum, quartz sand, Ca(OH)2, powdered coal ash, slag, lime stone, hoolamite, volcanic dregs, haydite, polystyrene foam, expanded pearlite, zeolite, and ethene-vinyl acetate copolymer resin. Agypsum-based mortar for automatic leveling is prepared from semi- hydrated gypsum, quartz sand, Ca(OH)2, powdered coal ash, slag, lime stone, ethene-vinyl acetate copolymer resin, methyl hydroxyethyl (or hydroxypropyl) cellulose ether, sulfonated cyanuramide-formaldehyde resin and gluconate.

A baby bottle feeding apparatus and method for assisting the feeding of a nursing infant by a bottle attached to an elongated feeding tube with pacifier end. The apparatus and method can include a pivotable connector such as a ball and socket connected between an elongated tube and the pacifier that can be rotated to selected positions without pinching off the tube for allowing ease of use by the nursing infant. The apparatus and methods can include additional assists such as allowing the liquid contents of the bottle to become more easily moveable by gravity flow. One embodiment can have a stand that orients the bottle up to approximately ninety degrees which can include forty five degrees when positioning the bottle on a support surface. Another embodiment allows for an interior wall inside the bottle to have a sloped portion so that laying the bottle on its side in a horizontal position still allows gravity to assist moving liquid contents within the bottle to the feeding infant.

The invention relates to a technology for breaking, sorting and recycling household garbage incineration slag. The technology comprises the following steps: by utilizing gravitational potential energy and using water as a medium and circulating flow, vertically arranging an iron removal device, a hopper, a breaker, a magnetic separator, a jigger, screening equipment, a slag finished product collection tank, a sedimentation tank and the like which are equipment for treating the household garbage incineration slag in every link from high to low; injecting water and the garbage incineration slag into the breaker so as to form a material flow, obtaining slag materials with fine particles, light mass and optimized components through the breaker, the jigger and the screening equipment under the action of material gravity flow, filtering through the collection tank and the sedimentation tank and directly transporting the dried fine-grained slag finished product to a finished product warehouse finally; and reblending clear water obtained after sedimentation and filtration and the garbage incineration slag raw material so as to be recycled. The technology has the advantages that the exertion of gravitational potential energy is facilitated in a material treatment process, and the friction heat energy of the materials and the equipment is reduced; and the dust fog pollution in the treatment process is reduced, and environments are protected.

A unitary concrete structure pumping station useful in pumping waste fluids and the like during the passing of such materials from one part of a gravity flow waste system to another. This concrete structure is simple to install and use and many of the problems associated with conventional pumping stations are alleviated. The structure is comprised of several parts that can be made pre-assembled at the factory or assembled in the field prior to installation. By being a unitary structure this pumping station is resistant to movements within the earth and therefore less likely to incur line breaks.

The present invention provides an assembly for use in vertical, gravity flow driven polymerization reactors for combinations of high viscosity, high throughput, and shallow polymer depths. The baffle assembly module of the invention includes a support structure having a plurality of side openings. The side openings allow the escape of vapor liberated from the polymeric melt. The assembly further includes a feed splitter followed by two or more vertically arranged rows of baffle plates with the feed splitter and baffles sequentially positioned in the support structure. The plurality of parallel baffles in a row are angled such that when a polymeric melt contacts a given baffle the polymeric melt moves in a downward direction under the force of gravity. The arrangement of the rows is such that each row (except the lowest row) transfers the polymeric melt to a lower vertically adjacent row until reaching the last row of baffles in the module. According to the vertical arrangement of the components in the baffle assembly module and by stacking additional baffle assembly modules if needed within the reactor, the polymeric melt cascades down the vertical length of the reaction vessel interior. The present invention also provides a polymerization reactor that incorporates the assembly of the invention and a method of increasing the degree of polymerization of a polymer melt by using the assembly of the invention.

The present invention discloses a self-flowing farmland underground drenching solution collecting device which belongs to the field for researching the environment science, agrology and plant nutriology. The device of the invention comprises an eluviation disk, a water-discharging pipe, a liquid-collecting pipe, a breathing pipe, a liquid drawing pipe, a sampling bottle, a buffering bottle and a vacuum pump; the eluviation disk is used for collecting the drenching solution; the liquid-collecting pipe is connected to the water outlet of the eluviation disk through the water-discharging pipe, the drenching solution in the eluviation disc can automatically flow into the liquid collecting tube; and the vacuum pump is used for extracting the drenching solution collected by the liquid-collecting pipe to the sampling bottle through the liquid drawing pipe under the buffering of the buffering bottle. Comparing with the prior art the invention has the characters of reasonable structure, convenient manufacturing, easy actualizing and the like, and the invention is especially suitable for monitoring the influence of the soil solutes of nitrogen, phosphor, agriculture chemicals and the like to the groundwater.

The invention provides solvent-free polyurethane self-leveling terrace material, which comprises A, B and C components. A consists of 20 to 60 percent of vibrin, 0.1 to 1 percent of defoamer, 1 to 5 percent of color paste, 5 to 20 percent of powdered zeolite, and10 to 40 percent of kaolin or silica flour. B is liquid MDI with NCO equivalent of 127. The solvent-free polyurethane self-levelling terrace material has the advantages that dehydrated castor oil is used to prepare vibrin instead of polyether and polyester polyol; castor oil belongs to vegetable oil with wide sources, and is renewable; vegetable oil is low in cost as raw material for preparing coating, and is innoxious, friendly to the environment with high hardness.