摘要:
This invention provides a mixing chamber that utilizes several tined cylinders to convey materials through the mixing chamber for applying liquid additives to the materials. Each of the tined cylinders includes a number of spring biased tines extending from the surface of the cylinder. The tined cylinders are arranged within the mixing chamber such that, as the tined cylinders rotate about an axis, the spring biased tines engage the materials within the mixing chamber and nullsweepnull them along towards a discharge opening of the mixing chamber. As the materials are conveyed through the mixing chamber, an additive liquid, typically containing various chemicals, colorants, dies, and/or paints, is sprayed onto the materials. In this manner, liquid additives are applied to materials more evenly and more thoroughly, resulting in a more consistent finished product.
摘要:
To provide superior anti-agglomeration, or tackiness-reducing, properties, one aspect of the invention is directed to coated polymeric particles, with each of the coated particles comprised of a polymeric substrate particle and a block-reducing coating on the surface of the substrate particle. The coating includes polymeric coating particles which advantageously may be in the form of a micro-fine powder. Also disclosed herein is a process for applying the polymeric coating particles onto the polymeric substrate particles, as well as equipment which is especially useful in producing the coated polymeric particles.
摘要:
An apparatus for high capacity production of high-fluidity, colloidally mixed cement slurry. Water and cement dust are combined at metered rates by a premixing assembly which discharges into a mixing tub. The high-speed, high-shear pump recirculates the material through the tub to produce the colloidally-mixed slurry. The high-fluidity slurry may be provided to a second pump, preferably of the positive-displacement, progressive-cavity, rotor-stator type, for supplying the slurry at a metered rate. Finished foam material may also be provided to the slurry metering pump at the metered rate, so the materials are mixed to form a foamed cement grout in which the weight and quality of the material is precisely adjustable.
摘要:
A self-cleaning mixer includes a cylindrical housing and a feedscrew extending longitudinally through the housing for mixing water and cement and conveying the slurry through the housing. A chute at the infeed end of the housing receives a batch of material and directs the material into the housing. The feedscrew turns on a hollow shaft including a plurality of outwardly directed nozzles along a portion of the length of the shaft. The housing includes a plurality of inwardly directed nozzles fed from a pair of manifolds. During a cleaning cycle, one of the manifolds is shut off, thereby increasing the water pressure in the other manifold and increasing the force of the spray to enhance cleaning. The housing is slightly inclined to provide gravity feed of slurry in addition to the feedscrew.
摘要:
A process and apparatus for the preparation of mortar from an aggregate and a binder is disclosed which comprises the use of a silo provided with at least one partition so as to create in the silo two or more compartments for the separate storage of the aggregate and the binder, the compartments being provided with conveyor screws, the speeds of which can be adjusted to control the volumetric flow of the components to a mixing chamber. When the desired amounts have been dispensed, the remaining materials may be stored indefinitely for layer use. The silo compartment for the aggregate may be provided with a heating element to safeguard the mechanically operated slide valve against freezing. The conveyor screw in the outlet for the binder may be provided with a cam and a plunger rod with transverse projections to prevent arching in the compartment for the storage of the binder.The apparatus may be removably mounted on a truck so that it may be loaded and unloaded easily for transport to and storage at the building site.
摘要:
In a method for the continuous addition of glue to a mixture consisting of wood chips, wood fibres or the like, the mixture is moved helically, in the form of a ring of mixture, through at least one glue-applying zone of a mixing container where glue is supplied to the mixture substantially radially from the inside of the ring of mixture.In order to achieve a particularly satisfactory distribution of glue over the chips or fibres with the use of little energy and so little destruction of the chips, the glue is very finely atomized in the space situated inside the ring of mixture and is supplied to the ring of mixture largely radially. For this purpose, glue nozzles, to which glue can be supplied under pressure by a glue proportioning pump, are mounted on the shaft of the mixing container.
摘要:
The percentage of entrapped air in mortar, plaster, concrete or a like building material which is prepared on a continuous basis is increased, preferably by at least 100 percent, by providing a mixing chamber with one or more barriers which oppose the progress of a mixture of solid and liquid constituents toward the outlet so that each increment of the mixture dwells in the mixing chamber for a relatively long interval of time which exceeds 15 seconds and can even exceed 40 or 50 seconds. The mixing chamber defines a sump for a supply of the mixture, and the rate at which the material leaves the chamber equals or approximates the rate of admission of constituents into the chamber so that the quantity of material which forms the supply is constant. Such supply is agitated by blades, paddles, vanes, grates, lattices or like devices to ensure continuous penetration of air into the material which dwells in, as well as the material which advances through, the mixing chamber. The barrier or barriers may form part of the mixing chamber or they may constitute discrete parts in the form of rings, discs, vanes, paddles or the like, normally in the region of the outlet. Each barrier may but need not rotate with the agitating elements in the interior of the mixing chamber. The mixing chamber can be used in lieu of conventional mixing devices or at the discharge end of a conventional mixing device.
摘要:
A mixing and pelletizing chamber includes a semicylindrical flexible trough of rubber or other material in which a rotor assembly mixes and pelletizes material moved from an inlet end to an outlet end. Springs are attached to the trough to resist movement of the trough in the direction of the rotation of the rotor assembly. The rotor assembly includes an axial shaft having transversely extending arms with blades at their outer ends with every fourth arm and blade being in a common plane. The blades are symmetrical and have converging flat surface to control product retention time in the pelletizer and are adjustably connected to the arms for providing adjustment of the force of the conveying action to the material in the trough. Adjustment is provided by aligned slots on opposite sides of the tubular arms receiving bolts on which the blades are carried. Optionally, the blade may nest in a semicylindrical portion of the tubular arm for angular adjustment.