Showing papers on "Material flow published in 1988"

Apparatus and method for separating recyclable materials

Abstract: An apparatus for sorting recyclable materials including an inlet conveyor with a magnetic pulleys that directs magnetic objects out of the flow of recyclable materials. A vacuum inlet is positioned adjacent a stepped region of the conveyor so as to pull lighter weight materials out of the material flow. A size sorting conveyor separates larger objects from the smaller lighter weight objects, and heavier objects such as glass are conveyed to still another collecting region.

Control valve and method of controlling material flow through a conduit

Abstract: A device and method for regulating the flow of material through a conduit. The device includes a material flow path having a disk member for closing the material flow path, a material bleed path through the disk member when closed and a member for moving the disk and opening the material flow path. The device can further include an additional piston member for closing the material flow path at a secondary position and having an additional material bleed path therethrough and an additional member for moving the piston and opening the flow path as well as a sleeve member movable within the device for releasing material pressure from both within the device and ahead of the device.

Bell-furnace top numerically controlled stuff-flow adjusting device for shaft furnace to use up stuff

Abstract: The utility model discloses a numerical control material flow regulating device for the furnace top of a blast furnace without a bell. A digital pulse valve is used to replace public known hydraulic system composed of an electromagnetic valve, a hydraulic control one-way valve and a one-way throttle valve so as to simplify the numerical control material flow regulating device. A material flow regulating valve and the digital pulse valve are provided with a pair of gears which is used as the position feedback device of the digital pulse valve, and the rotation angle of the material flow regulating valve is made to have a linear relation with inputted pulse number so as to make opening control simplified. The numerical control material flow regulating device can exactly control and regulate the opening of the material flow regulating valve, and can realize reasonable distribution with various modes according to the requirements of the operation of the blast furnaces.

Produktionslogistik in der chemischen Industrie

Abstract: Logistics in the manufacture of chemical products. This survery covers the fields of location analysis, organization of operational material flow, and materials management, all of which are interlocked with each other. Logistics problems with location analysis lie in the area of infrastructure, procurement, and distribution. The organization of the operational material flow has to be based on a closed concept, taking simultanously into consideration interests of production techniques and of logistics. Special attention has to be paid to the reciprocal effect of plant and storage capacity. With complex production structures simulation models should be used, including a statistical model of the market demands, systematic variation of material flows, and grouping of technical equipment. Target is a minimization of total cost. For market oriented operation of complex productions, integrated materials management systems have to be employed. The systems supply a transparent material flow starting from the market demands via the control of production up to the procurement of raw materials.

Apparatus and method for blending particulate materials

Abstract: An apparatus for blending particulate materials comprising means defining an upper chamber for holding a supply of material to be blended, the material holding means having at least one wall, the wall of the material holding means having at least two outlet ports spaced vertically and about a perimeter of the material holding means for reeiving therethrough particulate material from the upper chamber by gravity flow, means defining a lower chamber for blending particulate material, the material blending means having at least one wall, the wall of the material blending means having at least two inlet ports, means intercommunicating each of the outlet ports with one of the inlet ports for guiding material from the upper chamber to the lower chamber, flow diverting means disposed in the lower chamber, the flow diverting means having means positioned to intercept the flow of material through each of the inlet ports for dividing the flow of material into separate streams, each of the material flow intercepting means including a set of surfaces disposed in diverging relation relative to the direction of material flow.

Viscous fluid spraying apparatus having a unitary nozzle

Abstract: An apparatus for dispensing viscous fluid material having one-piece nozzles which produce a supply of drops of fluid material. The nozzles each include a nozzle body having a first end and a dispensing end. A gas flow path through the nozzle body has an array of outlet sections which terminate at the dispensing end of the nozzle body. The inlet section of the gas flow path is a cylindrical bore which feeds a stream of gas to each of the outlet sections. A plurality of viscous fluid material passageways closely surround the outlet sections of the gas flow path. As a stream of material is discharged from each material passageway, the expansion of gas emerging from the gas outlet sections breaks up the flowing material, thereby applying the material in a spray of droplets even though both the gas flow and material flow are continuous. The first ends of nozzles are attached to an elongated dispensing bar of an applicator. The dispensing bar has a first longitudinal bore which is supplied with low pressure viscous fluid material and which is in fluid communication with the material passageways. The dispensing bar also has a second longitudinal bore which is supplied with a gas, preferably air, and which is in fluid communication with the inlet section of the gas flow path. Each nozzle is associated with a pair of screws which penetrate the dispensing bar and selectively restrict the gas flow and the material flow to the associated nozzle.

Adjustable electric draw-gate cooprated with grinding material flow display

Abstract: The utility model discloses an adjustable electric draw-gate cooperated with grinding material flow display, belonging to the technical field of the grinding material jet (throw) machine or equipment. The utility model is characterized in that a set of drive mechanism and a limiting device are additionally arranged on an electric magnet which controls the draw-gate to open or close; the drive mechanism and the limiting device can make the electric magnet move left and right to control the opening size of the draw-gate. The utility model is applied to the strengthening equipment and cooperated with a grinding material flow display; the grinding material flow can be electrically and stepless regulated at any time, ensuring the stability of the mechanical shot throwing quantity; the operation is convenient, flexible and safe.

Injection molding method for rubber and mold therefor

Abstract: PURPOSE:To prevent generation of flashes at the time of injection molding, by a method wherein after formation of a material reservoir in the vicinity of a final arrival part of a material flow for a product cavity, a surplus injection material is introduced to the material reservoir, and vulcanization molding is performed by pushing back the surplus injection material to a product cavity. CONSTITUTION:A cylindrical hole part 15 communicating with a product cavity 13 is formed in the vicinity of a final arrival part of a material flow for the product cavity 13, a pressing-in plug 17 is moved backward/forward by fitting the pressing-in plug 17 into the cylindrical hole part 15 and formation/back-filling of a material reservoir 18 are performed respectively. A fill amount of a rubber material into the product cavity 13 is more than the capacity of the product cavity 13, and less than the sum total quantity of the same and the capacity of the material reservoir 18. After completion of casting of the rubber material, a surplus injection material M in the material reservoir 18 is pushed back to the product cavity 13 by moving the pressing-in plug 17 forward and the material reservoir 18 is sealed. Magnitude of pushing-back pressure is lower than injection pressure due to a little return to the side of an injection nozzle 31 of the material within a material flow path, and the rubber material does not enter even if a fine gap is on a parting face of a mold P.L.