Abstract:
A method and device for heating and/or drying flowable loose material, especially granular polymeric material, that is to be conveyed to a processing machine, such as an injection molding machine, are provided. A hot air stream that has been heated up with a heating unit is caused to flow through loose material flowing in a chamber transverse to the direction of flow of the loose material in the chamber.
Abstract:
The invention deals with calcium silicate granulates or powders with a microporous structure, which are obtained, by reacting crystalline or, if required, amorphous silicon dioxide, or materials containing the same, with calcium oxide or materials containing the same, in a CaO to SiO.sub.2 molar ratio of 0.8:1 to 1:1:1, by homogenizing the same in water together with a suitable additive and molding, autoclave setting, comminuting, drying, and grading with the further proviso that the homogenization during the reaction is carried through by dispersion of the starting materials in water by adding an anion-active surfactant, which had previously been converted in water into a microporous stable foam, obtained as absorbents and adsorbents for liquids, vapors and gases, as well as calcium silicate granulates of this type with further developing additives, which in the use for absorption of hydrophilic liquids are fatty amines, whereas in the use of the absorbent for oleophilic liquids and gases polyamide waxes, fatty amine salts or saponification resistant alkoxy silanes may be used.
Abstract:
A gate valve has a gate for opening and closing a conveyor line, which is connected to a piston. The piston delimits a pressure chamber within a housing which can be pressure-connected to the interior of the conveyor line. A module for producing a conveyor line of a system for conveying bulk material has a tube section from which a tubular crosspiece branches off, in which a valve is seated. The system for conveying bulk material has at least two senders containing the bulk material and at least one receiver receiving the bulk material, which are line-connected to one another by conveyor lines. The conveyor lines have at least one receiver collecting line, which has a line section running upwards, into which at least two transverse lines open, in each of which a valve is seated for opening and closing the line sections.
Abstract:
The invention relates to a separator for separating a conveyed medium, preferably air, from a conveyed material (4). Said separator comprises a container (1) which has at least one feed line (3) for the conveyed medium/conveyed material mixture, at east one outlet for the conveyed material (4), and at least one outlet (8) for the conveyed medium. In order to avoid abrasion damage at high conveying speeds or to ensure that said abrasion damage occurs at most only to a small extent, while nevertheless ensuring that the conveying medium and conveying material are reliably separated, an impact wall (14), which adjoins a cover wall (15) at an angle thereto, is located in the housing (1) opposite and at a distance from the outlet end (10) of the feed line (3) in the inflow direction (13) of the conveyed medium/conveyed material mixture. Said impact wall covers the inflow path of the conveyed medium/conveyed material mixture, blocking it from the outlet (8) for the conveyed medium. The conveyed material (4) hits the impact wall (14), which causes the kinetic energy of the conveyed medium to dissipate. The speed of the conveyed medium reduces very quickly after exiting the feed line (13), meaning that it cannot entrain any conveyed material.
Abstract:
The invention relates to a coupling point serving to form a coupling station between at least two senders and at least one receiver of a pneumatic conveyance system for conveying bulk material. The bulk material is directed by sender tubes and receiver tubes, which fluidically connect the sender and the receiver to the coupling station (6). The coupling point is a plug-in module which has at least one sender divider tube (7) and at least one receiver divider tuber (12). The sender divider tube (7) has at least one outlet (10) and the receiver divider tube (12) has at least one inlet (15) for the bulk material. The sender divider tube (7) and the receiver divider tube (12) each have at least one connection (9, 14) for a next plug-in module (21) or a sender tube (4) or receiver tube (5). The outlet (10) of the sender divider tube (7) and the inlet (15) of the receiver divider tube (12) can be closed or released. The coupling station has at least two dimensionally stable plug-in modules, each having at least one sender divider tube and at least one receiver divider tube which are fluidically connected or connectable to each other.
Abstract:
A dryer has a hopper for material to be dried and an inlet line for supplying dry air to the hopper. A heating device for heating the dry air to the desired drying temperature before introduction into the hopper is provided. A return line is connected to the hopper for removing moist air from the hopper which results from the dry air passing through the material in the hopper and absorbing moisture therefrom. The return line has a part that functions as a heat exchanger. The dry air before entering the hopper is guided through the heat exchanger.
Abstract:
A carafe made of completely non-metallic parts includes a glass body portion with rim. A plastic edge member is fitted over the rim and secured by adhesive. The plastic edge member has a notch therein which received a projection from a plastic handle which is bonded to the outside surface of the glass body portion.
Abstract:
A partition which can be used in offices or like establishments has a row of neighboring upright rod-shaped sound-absorbing components with transversely extending openings for several flexible strip- or band-shaped metallic coupling elements in the form of leaf springs which enable the partition to be flexed so that the components are located in a common plane or together form a U-shaped, S-shaped, L-shaped or a like panel. The end portions of the flexible coupling elements are secured to the corresponding outer components, and the securing means can be provided with devices for coupling the partition to an adjacent partition. Certain rod-shaped components carry legs which are weighted and have roughened floor-contacting surfaces so as to reduce the likelihood of unintentional slippage of the feet relative to the floor, particularly when the rod-shaped components are not disposed in a common plane. The neighboring components can be assembled in partly compressed condition so as to tension the flexible coupling elements.
Abstract:
A vacuum conveying system has at least two storage locations and at least two consumers connected by supply conduits and discharge conduits to each other. A vacuum source is provided that produces a vacuum flow/air flow. A central material conduit is provided with valves, wherein the supply conduits and the discharge conduits each have one of the valves associated therewith. The valves actuate conveying paths of bulk material from the at least two storage locations to the at least two consumers. The valves have a first position and a second position, wherein in the first position the valves open the material conduit to provide a through passage. In the second position, the valves supply the vacuum flow/air flow to the central material conduit or conduct the vacuum flow/air flow away from the central material conduit.
Abstract:
The disclosed spool valve is used especially in conveying systems comprising conveying pipes (6, 7) and includes a spool (1) which allows the conveying cross-section of the conveying pipe (6, 7) to be closed. The spool (1) has at least one through-hole (33). The conveying pipe (6, 7) is sealed from the spool (1) by at least one sealing ring (27, 28). Said sealing ring (27, 28) surrounds the conveying line (6, 7) and includes a washer-shaped sealing portion. Said sealing portion lies flat on the spool and seals under the effect of the difference between the pressure in the conveying line (6, 7) and the ambient pressure.