Abstract: Mixing devices for mixing a processing agent with a pulp suspension are disclosed including a mixing vessel, an agitator mounted on the surface of the mixing vessel to create a flow of the pulp suspension across the mixing vessel, a processing agent supply for supplying processing agent to the flow of pulp suspension, and a flow divider mounted on the inner surface of the mixing vessel opposite the agitator, in which the flow divider includes a substantially vertical front distribution edge and a pair of arcuate front surfaces extending from that edge to the inner surface of the mixing vessel on opposite sides thereof.

Abstract: A mixer includes a shaft having first end and a second end. An impeller is mounted to the second end of the shaft while the shaft is rotated by a motor attached to the first end. The mixer includes a mixer support shaft and mounting bracket for mounting a diverter between the first end and the second end of the shaft.

Abstract: A mill for emulsifying immiscible fluids comprises a mill body having a cylindrical cavity extending therewithin, a fluid inlet at one end of the cavity and a fluid outlet near the other end, both in fluid communication with the cavity. The mill further comprises a stator having a first stator surface, and a rotor assembly having a rotor mounted on a shaft for rotation in the cavity, where the rotor has a first milling surface which faces the first stator surface. Between the first stator surface and the first milling surface is a first fluid milling space. The stator includes at least one annular row of stator projections extending from the first stator surface into the first fluid milling space, and the rotor includes at least one annular row of rotor projections extending from the first milling surface into the first fluid milling space. The annular rows of rotor projections are concentrically adjacent to the annular rows of stator projections within the first fluid milling space.

Abstract: An improved vertical feed mixer has a mixing chamber defined by a bottom wall, a side wall, and an open upper end through which feed material, such as hay bales, is loaded into the chamber. A vertically disposed auger with tapered flighting is rotatably mounted within the chamber for cutting, mixing, and discharging the feed material through a discharge opening near the bottom of the chamber. A plurality of hay claws prevent hay from spilling over the top edge of the mixing chamber. The hay claws also catch the hay bales, or portions thereof, to inhibit rotation of the hay with the rotating auger, thereby allowing the knife blades on the auger to cut the hay. A plurality of grader blades extend outwardly from the auger shaft in close proximity to the bottom wall of the mixing chamber, thereby pushing mixed feed outwardly through the discharge opening a plurality of times during each revolution of the auger, thereby providing increased uniformity of the discharge flow of material into a feed bunk or trough.

Abstract: A truck for shredding and mixing products for zootechnical use, including: a self-propelled or towed wheeled chassis; a container supported on the chassis and substantially shaped like an inverted frustum, with an open top; a rotating scroll in the container that has a vertical axis and an external profile that lies on an ideal substantially conical surface; shredding cutters fitted at the profile of the scroll; and vertically arranged countercutters, shaped substantially like a circular sector, and having respective vertices pivoted to the wall of the container in substantially radial positions and extractably inserted through appropriate slots of the container. The countercutters are arranged so that the pivoted vertex of each one is in a substantially median region of the wall of the container and so that each countercutter extends downward from its pivoted vertex so as to effect the lower part of the wall of the container.

Abstract: A truck for shredding and mixing products for zootechnical use, comprising, on a self-propelled or towed wheeled chassis, a frustum-shaped container that tapers downwardly, is open at the top, and contains a scroll that rotates with a vertical axis and has an external profile that lies on a substantially conical ideal surface, shredding cutters being fitted at the profile. Countercutters, shaped substantially like a circular sector, are pivoted in a vertical arrangement, by means of their respective vertices, to the wall of the container in substantially radial positions and can be inserted and extracted through specifically provided slots. The truck furthermore comprises an automatic actuation and control device for the positioning of the countercutters according to work variables. The actuation and control device is constituted by an electronic control unit that controls a hydraulic section for the movement of the countercutters.

Abstract: An apparatus for mixing or otherwise processing fluids, which apparatus comprises, within a housing, a rotating perforated drum positioned tangentially relative to an inner non-rotating stationary body that is located within the rotating perforated drum. The outer surface of the rotating perforated drum is also positioned tangentially relative to the inner surface of the housing or other outer non-rotating stationary body. In operation, zones are formed which promote mixing of the fluid being processed and generate new fluid surfaces, thereby facilitating mixing, degassing and/or reaction.

Abstract: A rotating stirring device, particularly for mixing heterogeneous systems in mechanical stirred reactors, is fit to be joined to a drive shaft coaxial with respect to the device rotation axis. The device includes a plurality of extended and substantially C-shaped stirring elements symmetrically arranged with respect to the rotation axis and joined to each other at respective ends corresponding with the rotation axis. Such a device permits a very efficient material exchange among different phases to be obtained and to remain substantially constant with an increase in the volume of the mass being stirred. The device is also characterized by a high mixing homogeneity and particularly low shear stress values.

Abstract: Improved mixing effectiveness in the mixing of a gas with a liquid suspension is achieved in a batch mixing system having a mixing tank with a hemi-toroidal tank bottom which extends between a radially inner neck portion of the tank to a radially outer cylindrical wall portion of the tank. The hemi-toroidal profile of the tank bottom has a monotonically increasing toroidal radius between the neck and wall portions. Disposed within the tank is an assembly including an axial flow impeller with pitched impeller blades, a stator adjacent to the impeller and having stationary stator blades of a pitch opposite to the pitch of the impeller blades, a shroud surrounding the radial periphery of both the impeller and the stator and a gas sparging means supported by the shroud.

Abstract: A vertical forage mixer is of a unibody-type construction to provide an especially strong and durable unit. The major components of the vertical forage mixer are secured-together, typically by welding, so that the various components are combined and tied together into a structure in which there is no need to isolate one component from any of the other components. A detachable weigh bar and hub combination assembly can be provided. A discharge conveyor can be included which features an adjustable conveyor run for varying discharge locations. A comb assembly can be associated with the discharge conveyor in order to facilitate even outflow of mixed forage or removal of foreign materials. A scroll assembly is also provided which is of a cantilevered variety and which is especially durable and facilitates aggressive mixing, including cutting when desired.

Abstract: Machine for treating chocolate masses in which solid matter can be fed in and comminuted if so desired. The arrangement is designed such that in addition to a mixing and kneading device, at least one feeding screw is employed, with which a cutting procedure is carried out, preferably in simultaneous operation. The feeding screw can be made up of different individual screw elements, which are convenient for the material to be treated. This treatment is particularly suited for producing crumb.

Abstract: Stirring device for machines for the manufacture of ice-cream, of the type with a whipping cylinder (1) with a horizontal axis, provided with a device for extraction of the ice-cream at one head side. The stirrer consists of two stirring blades (7) of helical shape which are arranged diametrically opposite one another and extend over the entire length of the whipping cylinder at a slight distance from the internal wall of same. The stirring blades (7) are supported on a hub (8) which is integral with the operating shaft (9), while there is provided between the two stirring blades (7) a plurality of scraping vanes (11) which are capable of interacting with the internal wall of the whipping cylinder.

Abstract: The invention relates to a method for mixing liquids into each other or different phases into liquid by employing a double loop circulation, created below the surface zone of a reactor, in order to maintain an intensive mixing. It is characteristic of this Bottom Toroidal Roll or BTR principle that the employed mixer has a strong bottom draft and presses obliquely downwards, and that the mixer is installed according to the mixing method of this invention and that the flow pattern thereof is controlled in an exactly determined fashion. In our method the mixer jet hits the cylinder surface of the reactor, so that the jet is divided into two roughly equal parts by adjusting this distribution by means of a back-flow guiding member of the invention, which guiding member is located above the mixer. The rolling motion taking place in the reactor is controlled by means of specific baffles.

Abstract: The barrel (20) comprises at least two intersecting lobes (21a,21b) of cylindrical bores having parallel axes each corresponding to a screw and defining in the region of their intersection at least two longitudinal parallel edges (22). Each lobe comprises at least one shearing zone (23a,23b) adapted to cooperate with a shearing element mounted on the respective screws. The shearing zone (23a,23b) of each lobe is formed by least one groove (24a,24b) extending in the direction of the flow of the material and provided on the inner side of the barrel (20), the groove providing therebetween and each edge (22) a portion of a continuous surface of the cylindrical bore forming the corresponding lobe.

Abstract: A system is provided for mixing of concentrated liquid gelling agent and water to form a fracturing fluid for fracturing of a subterranean formation. High shear rotary mixers are utilized in a blender tub to provide efficient hydration of the concentrated liquid gelling agent and water mixture.

Abstract: Side entering mixer apparatus has an impeller with an axis of rotation above and along the bottom of a tank in which the material (liquid or liquid suspension) to be mixed is disposed. In a discharge region in front of the impeller and in close proximity to the front of the impeller, there is disposed a flow straightening vane which removes substantially any radial component of flow. By removal of the radial flow component, helical flows which interact in the discharge region and cause pulsation of flow into the inlet region (between the rear surface of the impeller and the side wall of the tank from which it projects) are substantially eliminated and potentially catastrophic stress-induced failures in the side entering mixer and its seals are avoided.

Abstract: A stirring reactor for a viscous material. The reactor comprises a stirring vessel; a revolvable shaft provided in the vessel; a surface layer stirring vane provided on the revolvable shaft in the vicinity of interface of the gas and the liquid to be stirred; a stirring vane having at least a pair of radially directed multiple portion blades which extend radially towards the inner wall, a first of which blade portions is fastened on the revolving shaft below the upper layer stirring vane and the other of which blade portions extends outwardly radially from said first portion to terminate close to the inner wall of the vessel; and baffle plates provided on the inner side wall at positions substantially parallel to the surface layer stirring vane, and at a height between the heights of any stirring vanes having multiple blades.

Abstract: A plain, circular, high speed rotor, completely covering, and spaced apart from, the end of a thin walled stationary cylinder, forms a short narrow high shear gap. The cylindrical chamber allows fluid axially approaching the central rotor surface to be accelerated radially, to higher speeds over most of the plain rotor, to pass directly through the short shear gap near the rotor periphery. The higher speed fluid in the rotor boundary layer entering the gap excludes free stream turbulence from the high shear region. By adjustments of the gap clearance, one unit with an inch diameter stationary cylinder can dissolve, grind, prepare submicron dispersions, emulsify, mix or pump fluid mixtures at more than three gallons per minute. The gap clearance limits the size of particles passing through the gap without grinding and the force opposing gap spreading controls the intensity of grinding. After grinding is completed the elastic gap may close to the adjusted gap clearance.

Abstract: An agitator vessel is equipped with a radially conveying agitator and with at least one baffle, for the thorough mixing of liquids, the at least one baffle has the shape of an airfoil profile and is arranged below the level of liquids and above the blades of the agitator.The agitator vessel is equipped with a radially conveying agitator 3 and at least one baffle 2, the latter having the shape of an airfoil profile.

Abstract: A cement paste generator produces a paste with improved workability. The cement paste generator includes a housing, a shaft and a series of blades and baffles which have critical dimensions.

Abstract: A mixing device for the mixing of two or more liquids. A shell body is configured with a cavity having a longitudinal axis and circular cross-section which rotatably houses a shaft. The shaft is configured along a portion of its surface with grooves for receiving liquids to be mixed from inlets located within the shell body. A narrow annular gap region is formed between the outer surface of the shaft and the inner surface of the internal cavity in that portion of the shaft containing the slotted grooves.

Abstract: Novel process for preparing rubber-based compositions, e.g. adhesive formulations including natural and/or synthetic rubber and a quantity of tackifier resin for increasing adhesion, wherein said resin is incorporated in the composition via a cavity transfer mixer.

Abstract: A foam generator conventionally consisting of a hollow stator (1) with a coaxial internal rotor (2) together forming an annular mixing chamber. Both stator and rotor are being provided with alternative rings of polygonal pins (4, 3) reaching within the mixing chamber, each pin having at least two ribs 11 creating a vortex trail during generation. The rate of occupancy of the pins (4, 3) is such that within a cross-sectional range for the mixing chamber between 40-90 cm.sup.2, the quotient: ##EQU1## amounts at least to 1.5 and is preferably between 2.4 and 3.0.

Abstract: A method and apparatus for providing and treating a well with a viscosity-enhanced treatment liquid which will not clog perforations, gravel packs, filters and the like. A selected viscosity-enhancing agent in particle size is mixed in a selected well treatment liquid to produce a dispersion and the mixing continued at least until hydration is initiated to form an interface between the particles and the liquid. The liquid containing the interface is then subjected to a simultaneous mechanical and hydraulic shearing action by passage through axial apertures in a relatively rotatable rotor and stator units which are disposed in axial juxtaposition with a spacing between the adjacent rotor and stator surfaces selected to be less than the minor dimensions of the interface produced by the dispersion of the selected well treatment liquid and viscosity-enhancing agent.

Abstract: Apparatus for counter-current contact of at least partially immiscible fluids having different densities, which apparatus comprises a vertical vessel enclosing a plurality of superposed stirred compartments separated from one another by perforated separating walls. To increase the hold-up of dispersed fluid phase in the compartments, part of the perforations in the walls are provided with deflecting elements preventing flow of dispersed fluid through said perforations while substantially not hampering the flow of fluid being in the continuous phase.

Abstract: A high-speed fluid blender for liquid fertilizer employs a slurry-type of pump for both mixing and recirculation. The pump has a plurality of parallel spaced-apart blades, each of which comprises a disc having a central circular opening formed therein. One of the discs, such as the top disc, is driven by a shaft powered by a motor. The remaining discs are carried by the driven disc for rotation in unison. The discs are substantially alined coaxially of one another, and the disc assembly is housed within an annular pump housing. The circumferential edges of the discs have a substantial radial clearance with respect to the annular wall of the pump housing. This radial clearance increases in the direction of rotation of the blade assembly towards the discharge opening in the pump housing. A funnel-shaped hollow neck housing is secured to the bottom wall of the pump housing, in communication with the inlet opening therein, and diverges outwardly therefrom.

Abstract: An apparatus and method for mixing two or more distinct fluids is disclosed, and which includes a housing, a sleeve fixedly mounted in the housing and defining a mixing chamber, and a rotatable mixing head having a grooved outer surface disposed in the mixing chamber. At least one of the fluids is fed radially through the sleeve and into the mixing chamber, so as to be sheared and highly dispersed in the mixing chamber by contact with the rotating mixing head. In one embodiment, the sleeve includes a plurality of distinct openings for permitting the passage of the fluid, and in another embodiment the sleeve is composed of a porous metallic material, with the pores of the material defining the openings for the passage of the fluid.

Abstract: A cream whipping machine has an electric motor (1), a vane pump (3,9) and a whipping barrel (26) fitted closely together in axial alignment. Air and cream are sucked in to the pump chamber (14) via an intake assembly (16). A pump rotor (3) is fixed to a motor shaft (2) and a pump casing (9) together with the whipping barrel (26) and intake assembly (16), may be withdrawn from the rotor by undoing bolts (11). A space (13) to the motor side of a main pump seal (8) is vented to atmosphere through an opening (12) so that if the seal fails the liquid product is not forced into the motor.

Abstract: A containment and circulating system for drilling fluid is provided having generally circular tank means for receiving drilling fluid from a well during well drilling operations and from which the drilling fluid is withdrawn and injected into the well. The system incorporates a plurality of generally cylindrical tanks having cylindrical side wall means in normal relation with a substantially planar bottom wall. On opposed sides of each circular tank is provided angulated flow directing walls which intersect both the side wall and bottom wall. The flow directing walls receive the radiating flow from the impeller and direct it upwardly along opposed portions of the cylindrical side wall of the tank. An impeller is centrally located at the lower portion of each tank thereby inducing radiating flow of drilling fluid toward the lower outer wall structure of each tank.

Abstract: Disclosed is an apparatus for blending sand and solid additives selectively and at selected rates into water for injection into a well. The apparatus may be truck mounted, and includes a frame, an input line with manifold and pump, a mixing tank, a variable venturi nozzle for delivering water to the tank, and an output line with pump, manifold, and recycle line. An auger delivers sand to the mixing tank. Dry chemicals are fed to the tank adjacent the variable venturi nozzle where the water is turbulent, at low pressure, and in high shear. Liquid chemicals may also be pumped into the tank.

Abstract: An apparatus and method for determining the heating value of gaseous fuels is disclosed which include the novel means for establishing a mixture of air and the gaseous fuel of interest in known volumetric proportions. An electrochemical sensor is provided to sense the products of combustion of the precise volumetric mixture and the output of the sensor is indicative of the relation of the mixture to a stoichiometric mixture of fuel and air. This system is provided for adjusting the proportions of fuel and air in the mixture of interest in response to the output of the electrochemical sensor until the sensor indicates that the mixture of known proportions is substantially stoichiometric. The system is provided for determining the heating value of the fuel from a known relationship between the heating value of the constituents of the fuel and the amount of oxygen required for stoichiometric combustion.

Abstract: In a kneading machine including a fixed support structure, a kneading trough supported centrally for rotation about a vertical axis by the fixed support structure, and a rotary kneading tool located within the kneading trough, the kneading tool is rotatable about a substantially horizontal axis. The machine is also provided with fixed counter-members which cooperate with the kneading tool.

Abstract: This case is drawn towards an apparatus which mixes dry building materials. The building materials are mixed with air and water in a continuously flowing manner. The apparatus has a mixing tube with a rotating shaft. The materials are fed into the tube in its upward portion, moves downward passing a series of supporting plates which are attached to the sides of the tube in the conical shaft alternatively in a conically sloping manner.

Abstract: An apparatus for extracting pulverous or granular material from a mixture means of a solvent brought into contact with the mixtue. A receptacle is provided for receiving the material to be extracted as well as the solvent. A conduit system is connected with the lower portion of the receptacle and empties into the upper portion of the receptacle. Within the conduit system is arranged a device for conveying the solvent to be withdrawn from the receptacle as well as the mixture containing the material to be extracted. The device also serves to mechanically form a dispersion of the material to be extracted in the solvent. The device includes a rotatable body operated at a speed of 10,000 to 30,000 rpm.

Abstract: The instant invention is directed to a method of producing a reaction mixture for forming solid or cellular materials from flowable reactants and, optionally, fillers, comprising premixing the components and, optionally, fillers in a first mixing zone and after-mixing in a second mixing zone, the improvement wherein said after-mixing is carried out in a slit-like annular zone which extends radially from the center, the surface boundaries of said annular zone are not parallel and one of said surface boundaries is rotated while the opposite facing surface boundary remains stationary.

Abstract: A stirrer which permits homogenous and quick thorough mixing for the conditioning of bioinjurious waste, particularly radioactive waste, by means of a binder in the final storage container. The stirrer has a portion rotatable on another portion fixed in the container. The rotatable portion includes closed frame means having two or more opposite axially staggered stirrer arms secured to a hollow central bearing sleeve having axially spaced parts. The fixed portion includes a rod-like part upstanding centrally from the bottom of the container with the sleeve journalled thereon. The fixed portion is provided with one or more mixing elements secured thereto and disposed between the sleeve parts.

Abstract: A rotor for the distribution of air in the form of finely divided bubbles in the slurry in a flotation tank comprises a boss with an inner hollow air passageway, spaced-apart wings extending radially outwardly from the outer surface of the boss, and multiple air conduits communicating between the inner hollow air passageway and the surface of the boss between each adjacent pair of wings. The air conduits have outer mouths located immediately behind a wing (behind in the sense of rotational direction of the rotor) and linearly extend to the inner hollow air passageway such that lines through their central axes will intercept with imaginary radial lines passing through the centers of the wings behind which the outer mouths of the respective air conduits are located.

Abstract: A dyeing washing and/or milling machine particularly useful for dyeing woollen components including an annular working fluid reservoir and rotating paddle members which pass into and out of the reservoir to circulate the fluid therein. The apparatus may further include a heating system and a fluid pump and duct system, to heat and increase the circulation of fluid within the reservoir.

Abstract: Abrasive-containing tobacco slurry is homogenized by passing radially outwards between the facing surfaces of two closely adjacent coaxial rings of tungsten carbide to impinge violently against a tungsten carbide surface surrounding the rings. The occurrence of local areas of wear in the facing surfaces is minimized by rotating one ring relative to the other.

Abstract: An in-line mixer for animal feed is provided. The mixer receives feeds from a plurality of sources, mixes the feeds in a short distance, and deposits the mixed feed on a conveyor which carries it to animal feeding stations. The mixer includes a housing forming an upright passage containing baffles and rapidly rotating agitator blades which maintain the feeds in a fluidized condition and accomplish the mixing operation in a short time. Consequently, the mixer itself is short and requires relatively little space.

Abstract: A continuous mixing device for preparing emulsions comprising a chamber with a means of providing high shear mixing, e.g., a plurality of mixing blades on a shaft in the axis of the chamber, and with a plurality of entrance nozzles, e.g., at the bottom of the chamber and one or more in the sides thereof, for sequential addition of liquids at a controlled rate.

Abstract: Mixing apparatus includes a rotor having at least one rotor surface comprising a non-cylindrical surface of revolution about the rotor shaft axis and a stator having at least one stator surface which is substantially reciprocal in shape to the rotor surface. The rotor and stator surfaces have pluralities of mixing teeth attached to and projecting outwardly from these surfaces such that the teeth on the rotor surfaces intermesh with those on the stator surfaces. These mixing teeth may be tapered preferably on both their circumferential and radial sides.

Abstract: A mixing system which prevents accumulation of buoyant stagnant particles on the liquid surface and produces substantially uniform outlet slurry concentrations, comprising a tank having partial baffles in combination with an agitator. The baffle designs may be suitable for variable or constant level tanks depending upon the particular design selected and basically includes a plurality of baffles located within the tank substantially at or just below the liquid surface. These baffles are spaced about the tank wall and for a constant level agitated tank can be secured to the wall at a fixed location. In the case of variable level tanks the baffles can be maintained at the desired location by means of a floating member.Another embodiment locates the baffles as mentioned above and further provides a centrally located draft tube located above the agitator. Still another embodiment for variable level tanks locates narrow fixed baffles extending substantially from the liquid surface to the bottom of the tank.

Abstract: A mixer means for asphalt materials, particularly Trinidad Lake Asphalt. It has a revolving rotor assembly which carries longitudinally-extending mixer blades, the blades being perforate and thereby providing more thoroughness of the mixing procedure by which the asphalt particulate chips are caused to go into a sort of suspension in the liquid solvent of other asphalts or oils, even though the mixer blades are substantially larger than the particles being mixed. There are heater coil means extending inwardly from the tank ends, the support of the mixer blades being such as to accommodate the heater means without interference from revolving members of the rotor assembly.

Abstract: An apparatus for discontinuous mixing of at least two substances, of which at least one is a liquid, includes a container and a mixer which is disposed in the container. The mixer has a rotor drivable at high speed and a stator, the rotor and stator are provided with teeth disposed on mutually concentric circles. When the teeth move past one another, shearing slots are formed. In order to reduce the energy input and to reduce the required mixing time and/or improve the mixing results, at least the radially outermost circle of teeth on the rotor is disposed outside the radially outermost circle of teeth on the stator.