Abstract: A cartridge assembly for a caulking gun or similar dispenser contains two or more components to be mixed upon operation of the gun. One component is stored within an inner tubular container with flexible walls, which walls are sustained against collapse by a light gauge spiral spring extending between the nozzle end and the plunger end of the cartridge. The cartridge may have a rigid cylindrical outer tube within which the second component is retained by a plunger, or a flexible tubular outer container for the second component, again supported against collapse by a spring. A passive mixer unit is provided at the nozzle end of the assembly either inside or outside the body. The mixer unit is preferably cylindrical, defining internally a double spiral mixing passage containing passive mixer elements.

Abstract: A mixing and dispensing gun comprising a body having spaced inlets for receiving two components of an adhesive or reactive fluid, a dispensing valve in the gun, an outlet nozzle and a motionless mixer interposed between the dispensing valve and the outlet nozzle for directing the fluids in a sinuous path and mixing the fluids.

Abstract: A tube-and shell double-pipe or liquid-air fin type heat exchanger, which offers a high level of thermal energy transfer efficiency, incorporates a rotary blade to disrupt a fluid film on surfaces of each tube, and is of uncomplicated design and construction. The blade is free-floating and operates regardless of the direction of flow of the liquid through the tubes.

Abstract: A material mixing apparatus for the mixing of two or more fluids. A tubular conduit is provided for the passage of a first fluid. A casing is caused to pass through the tubular conduit, eminating substantially radially toward the center thereof and a quill is slidably located within the casing. The quill is hollow for the passage of a second fluid therethrough and possesses a discharge port for discharging the second fluid into a stream with the first fluid when the quill is radially extended within the casing, but which is blocked by the casing when the quill is not fully extended. Downstream from the second fluid discharge port is located a mixing means for mixing the first and second fluids.

Abstract: A multiple-barreled resin dispensing device having a syringe, an exit conduit, a static mixing element, means for detachably coupling the inlet of the exit conduit to the outlet end of the syringe, and means for locating the static mixing element within the exit conduit to provide rotational alignment of the static mixing element relative to the syringe.

Abstract: A dispersion of polymeric particles in a non-aqueous liquid is mixed with water with sufficient agitation to initiate substantial dissolution of the particles into water and is substantially homogeneously dispersed into the water substantially immediately, for instance in less than 50 milliseconds from the initiation of substantial dissolution. Preferred apparatus is an orifice mixer having a mixing chamber 41 leading to an orifice 51 and supplied by an inlet 46 for dispersion, the inlet terminating in a valve 47 and an orifice 44, and an inlet 45 for water. The effective outlet area of the orifice 51 is adjusted by an eccentrically mounted aperture plate 52 and there is a shear helix 57.

Abstract: The invention pertains to a linear in-line mixing system wherein a plurality of tubular elements removably located within a conduit in end-to-end relationship define a passage through which materials to be mixed flow. The elements each contain a pair of helical vanes spiralled in opposite directions about the associated element's longitudinal axis, and engaging elements are interlocked to prevent relative rotation.

Abstract: In the purification of oil used for example in light metal rolling, and contaminated by abraded particles, a coagulating agent, for example an aqueous soda solution, is added by means of a dosaging device (7) and mixed in a device (5) which comprises a static dispersing device (8) with a jet pump (9) connected thereafter with a recirculation loop (10). The mixing is normally carried out at an elevated temperature and a heating step (3,4) included. After mixing, the coagulates formed are separated, typically in a centrifuge (14). The invention is particularly suited to the purification of the rolling oil occurring in the manufacture of aluminium foils.

Abstract: A gradient mixer which effects the continuous mixing of any two miscible solvents without excessive decay or dispersion of the resultant isocratic effluent or of a linear or exponential gradient. The two solvents are fed under low or high pressure by means of two high performance liquid chromatographic pumps. The mixer comprises a series of ultra-low dead volume stainless steel tubes and low dead volume chambers. The two solvent streams impinge head-on at high fluxes. This initial nonhomogeneous mixture is then passed through a chamber packed with spirally-wound wires which cause turbulent mixing thereby homogenizing the mixture with minimum "band-broadening".

Abstract: A gear pump assisted screw conveyor extrusion system utilizing a cartridge heating device disposed axially within the screw and having the drives for the gear pump and the screw correlated in speed to create relatively little pressure in the thermoplastic material being extruded such that relatively little mechanical working thereof occurs. The thermoplastic material is melted in the screw conveyor primarily by heat transfer from the cartridge heater and the gear pump is utilized for conveying the melted material under pressure to a subsequent work station. A relatively deep material-conveying spiral channel is provided in the screw for maximized extrusion output per revolution of the screw and minimized mechanical energy generation by the screw. A motionless mixer may be employed intermediate the screw and the work station to homogenize the melted material for reducing temperature gradients therein.

Abstract: A mixer for mixing glass fibres into a relatively dilute aqueous cement slurry, e.g. for use in forming glass fibre reinforced cement products on an asbestos-cement making machine of the Hatschek or Bell type, comprises an annular chamber with a tangential slurry inlet, a helical rising floor, a coaxial conical outlet disposed to receive slurry flowing over the inner wall, which is lower than the outer wall, and a fibre inlet above the conical outlet so that the fibres are mixed with the slurry as it passes down the wall of the conical outlet in a vortex motion.

Abstract: A mixing element for a motionless mixer comprises a passage tube through which fluids flow and a helical blade formed in the passage tube so as to be integral therewith. The interior of the passage tube is partitioned by the blade to form a plurality of fluid passages. The blade extends from one end of the passage tube to the other in the longitudinal direction of the passage tube to be twisted helically clockwise (right-handed) or counterclockwise (left-handed). The corner portions of the fluid passages are rounded. The end edges of the blade are curved in the direction of the thickness and rounded. The motionless mixer is formed by alternately and longitudinally coupling right- and left-handed rotation type mixing elements. The mixing elements are so arranged that the facing end edges of the blades of each two adjacent mixing elements cross at right angles.

Abstract: An attachment to a dynamic mixhead allows pigment to be fully blended with a specified volumetric portion of a reactive polymer mix immediately prior to its passing through an in-line motionless mixer. The fully pigmented portion of the mix passes into the motionless mixer concurrently with the nonpigmented remainder of the polymer mix, each portion constituting a discrete stream and positioned in a manner facilitating rapid, improved blending. The pigment pre-blending attachment possesses particular utility for partial or incomplete blending applications, wherein striations of color are desired to impart a marbled effect.

Abstract: A motionless fluid mixing device having a tubular conduit in which right-hand and left-hand primary helical baffles are alternatingly arranged in spaced, serial relation with smaller helical connecting baffles extending centrally in the conduit between the primary baffles. The conduit has an entrance and exit end, each connecting baffle being helically curved oppositely to the primary baffle on the entrance end side of the connecting baffle for preventing center channeling of fluids flowing through the conduit by obstructingly deflecting and turbulently diffusing outwardly the portion of fluids flowing centrally in the conduit.

Abstract: An apparatus is provided for handling and treating heavy waste hydrocarbons. The device comprises a pit heater for at least partially liquifying the hydrocarbon waste to render it pumpable. A positive displacement pump has its inlet adjacent the pit heater and pumps and partially liquified material out of a pit and into a heater-blender. In the heater-blender, a relatively high gravity crude oil is mixed with the heavy hydrocarbon waste and the temperature of the mixture is elevated by injecting steam thereinto. The blend exiting from the heater-blender is on the order of 200.degree. F. The hydrocarbon component of the blended material is in the range of 15.degree.-25.degree. API. The blend is discharged into a holding tank which has the capacity for reheating the material if necessary. The blend is withdrawn from the storage tank and processed to break the water-hydrocarbon emulsion and remove the water therefrom.

Abstract: A flashing reactor wherein the initial single pipe carrying the ingredients within the flasher shell is connected within the shell to a flow splitter which in turn is connected to at least two other pipes arranged for parallel flow. In order to avoid an abrupt change in pressure and flow rate downstream from the splitter, the cross-sectional area of the branch pipes immediately adjacent the splitter is approximately equal to the cross-sectional area of the single pipe feeding of the splitter. The branch pipes are then increased in diameter until the combined cross-sectional area of the branch pipes is increased to up to twice the area of the single pipe feeding the splitter.

Abstract: Apparatus for imparting spiral motion to material flowing in a tube comprising a relatively short spiral member anchored to prevent movement relative to the tube. The spiral member has a maximum length shorter than the tube and is capable of imparting spiral motion to the entire amount of material flowing in the tube.

Abstract: A device for mixing flowable materials, especially relatively viscous liquids and flowable solids, comprises a pipe or tube section, preferably of circular cross section, provided internally with at least one mixing element helically twisted in a uniform manner about the axis of the pipe and formed with only two groups of surface regions which are folded relative to one another and which alternate along the mixing element. Each of these surface regions is of flat triangular outline with a base of the triangle formed along one of the helically twisted longitudinal edges of the mixing element and converging toward the other. The flat surface regions may be truncated, i.e. of generally trapezoidal outline with their narrow triangle side lying along the opposite edge of the mixing element from that occupied by the base, or of a pointed configuration where the triangle apex lies along this opposite side of the mixing element.

Abstract: The invention relates to an apparatus for the continuous preparation of photographic emulsions by a continuous flow process, in which a volume stream entering a pipe system flows successively through the various sections of this system corresponding to the individual stages of the process, such as the inlet points for introduction of the volume streams, mixing paths and ripening paths.

Abstract: Triglyceride oils are bleached rapidly and efficiently in a continuous system wherein a stream of the oil is preheated to bleaching temperature and is introduced into a mixing zone in such manner as to provide a swirling motion, bleaching adsorbent containing moisture is added to the surface of the swirling hot oil and water vapor or steam derived from the moisture in the adsorbent forms a protective atmosphere above the surface of the oil to protect it from oxidation. The oil-adsorbent mixture is pumped continuously from the mixer to a bleaching zone consisting of one or more static mixers, which may be unobstructed pipe sections, under flow conditions providing an average residence time of approximately one minute. The flow regime in the bleaching zone may be laminar or turbulent. Optionally, the oil-adsorbent mixture may flow continuously from the mixing zone to a vacuum dryer where it is deaerated and dried to optimum moisture content for bleaching prior to being pumped to the bleaching zone.

Abstract: A portable device for mixing two materials for discharge from a nozzle characterized by a separate container for each of the two materials with each container having means to discharge the contents of the container under pressure through a discharge tube, a mixing tube of flexible material having a discharge end and an inlet end with a mixing element received in the mixing tube and extending between the ends, a nozzle attached to the discharge end, and coupling means attached to the inlet end for connecting the discharge tubes of the containers thereto. The mixing element may take the form of a helically twisted strip member which may have projections extending from opposite edges thereof or may have one or more rows of perforation to form helical extending element spaced apart by a row of perforations and interconnected by bars extending between adjacent perforations.

Abstract: A spinneret assembly that includes a filtration cavity and a spinneret has a plate between the cavity and spinneret. The plate has an enclosed channel connecting the cavity and spinneret. The channel contains a plurality of stationary mixing elements and lies in a plane substantially parallel with the spinneret.

Abstract: An inline motionless mixer for mounting in a fluid-conducting conduit having a removable housing which facilitates cleaning of the internal mixing elements.

Abstract: A multi-component fluent product, such as an epoxy resin mixture, is controllably mixed and dispensed from an improved mixer-dispenser. The device has a pair of pressure chambers each of which receives one of the fluent components in its original package. Air under pressure is communicated to the two chambers to force the fluent materials from their packages into flow passages which merge and cause mixing of the components. Special valve arrangements are provided along the flow passages to control the mixture proportions and to enable the flow passages to be purged of the mixed components when desired.

Abstract: An atomizing device for mixing or atomizing fluids without moving parts and comprising, in combination, a hollow tube which has a substantially cylindrical inner wall and a core member situated within the tube in substantial coaxial relationship with and spaced from the inner wall. The surface of the core member includes at least one non-intersecting helical channel which extends substantially continuously for the length of the channel. Also, channel-forming means is provided about the core member in close proximity with the surface thereof and with the inner wall of the tube, which comprises at least one layer of at least one non-intersecting helical winding. Each winding in any single layer is in the opposite direction to each winding in the next or adjacent layer and each winding in the layer nearest the core is in the opposite direction to the helical channel formed in the core member.

Abstract: Two or more fluids, particularly viscous fluids, may be thoroughly blended and homogenized with a static mixer and method using a mixing element which comprises two or more banks of stationary baffles arranged around an axis parallel to the overall direction of flow of the fluids to be mixed. The baffles in each bank of the element are inclined at an angle to the overall flow axis and at an angle to the baffles of adjacent banks so that fluid streams are guided through windows or apertures formed by abutting baffles along the interface between adjacent banks. Each bank includes a plurality of substantially parallel baffle plates spaced along the axis, and at least one of the banks has a second set of substantially parallel baffle plates spaced along the axis and alternating with the first set of baffles.

Abstract: Apparatus is described that is useful for making a stable aqueous dispersion of a complex alkali metal-aluminium-silicate which is soluble in hydrochloric acid. The apparatus comprises a mixing tube, at least two inlets through which aqueous streams can pass into one end of the tube, one of the inlets being for the supply of the bulk of the water for the process at a pressure of at least 40 psi, an outlet at the other end of the tube, and stationary means within the apparatus for causing the aqueous streams to adopt a generally helical path and to mix with one another with shear, and for causing the product leaving the outlet to be at a pressure of atmospheric pressure or less and which is at least 40 psi below the pressure in the inlet of the bulk of the water.

Abstract: A mixing method and system for the thorough intermixing of liquids of widely different viscosities in which there is interposed at least one perforated plate in the line of flow ahead of a conventional static mixer.

Abstract: A static mixer for flowing media is disclosed. More specifically, the mixer comprises a tubular enclosure and guide surfaces which are in the form of multiple-thread screw surfaces which are alternatingly interrupted, overlap each other and extend to and are concentric with the tubular enclosure. A mixer designed in this manner provides a thorough mixing of the flowing media within a short length of the enclosure. Moreover, with the present mixer, little pressure loss occurs and the flowing media is distributed uniformly over the exit cross section.

Abstract: A mixing device comprising a plurality of mixing elements, each consisting of at least two passages which are arranged parallel, in a row, and are provided with spiral vanes therein, and through which fluid to be mixed passes, and a collecting and dividing chamber which is common to the passages, in which the fluid to be mixed is collected and then divided in subsequent passage, the elements being arranged in series in such a way that a line extending between the centers of the passages in one element intersects the corresponding line of an adjacent element. The elements of the device are also covered.