Abstract:
A pot-like digestion vessel (1), which is closed by a cover (3), is provided with adjustable automatic internal pressure relief by means of a pressure applying plunger (6) which is held in a screwing part (7) via a resilient pressure generating mans (8) to press against the cover (3). In another embodiment the plunger (6) holds a valve body (33) in an outlet channel (31) which extends through the cover (3).
Abstract:
An apparatus for carrying out chemical reactions simultaneously on a number of samples under identical pressure conditions comprises a plurality of upwardly open pressure vessels 1 mounted on a lower plate 2 and a plurality of vessel closure means 10 mounted on an upper plate 15 such that the plurality of vessel closure means 10 can be applied to the plurality of pressure vessels 1 simultaneously in order to hermetically seal said vessels 1, each vessel closure means 10 having a passage 19 communicating the interior of an associated pressure vessel 1 with a common manifold 22. A plurality of retaining posts 6 extend upwardly from the lower plate 2 and pass through apertures 27 in the upper plate 15. A locking ring 34 has a plurality of keyhole apertures therein having a wider portion allowing each retaining post 6 to pass through the locking ring 34 when the locking ring 34 is in an unlocked position and a narrower portion that engages a peripheral groove 7 adjacent the upper end of each retaining post 6 when the locking ring 34 is in a locked position.
Abstract:
A high temperature industrial door having a flexible door plate with notches about the periphery thereof for receipt of swing bolts. The door plate includes interior insulation and is suspended from and hinged to a door frame using a davit assembly. In the closed position, the lower edge of the door extends below floor level. To open the door, the davit assembly allows the door to be lifted above floor level and moved to an open position, by pivoting of the davit assembly.
Abstract:
The present invention provides a fully remotely operable system for loading and unloading a vessel. The system comprises a remotely operable joint connector for sealing or unsealing a vessel. It also consists of a remotely operable closure transport for removing a vessel closure from an opening in the vessel, and a remotely operable removal system for allowing material to be emptied from the vessel.
Abstract:
A device (100) for producing fullerenes includes an IEC vacuum chamber (110) which has a central grid-like electrode (112) and a conductive outer shell (111) that are connected to a pulsed source of high voltage (114) and provide an electric field within the chamber (110). The applied voltage supports the creation of a plasma at the inner core of the chamber near the electrode (112). A carbon-based gas, which is introduced into the chamber (110), possibly along with an inert buffer gas, id dissociated into component carbon and hydrogen ions that are separated and the carbon ions recombined into fullerenes that appears as a soot. The device (100) includes a soot extraction mechanism for removing and collecting the fullerenes.
Abstract:
An extrusion system utilizes single or tandem extruders and a mixer-cooler to extrude a foamable extrudate through a die in a sealable chamber. The foamable extrudate is shaped and calibrated within the chamber. The die is mounted on the end of a gel tube projecting through a gland seal in a fixed bulkhead forming the upstream end of the chamber. The gel tube and mixer-cooler are mounted on a movable carriage, movement of which may be used to adjust the die with respect to shaping and calibrating equipment inside the chamber. The mixer-cooler achieves a selected narrow range of uniform viscosity of the melt at the die depending on the size of the product and density. The chamber is preferably a vacuum chamber producing low density foams. The product exits the chamber to atmosphere on a continuous basis through a submerged orifice in a water baffle immersion seal. The mixer-cooler enables a large size low density product to be produced with uniform cellular structure without cell collapse or density gradients, as the product is subjected to the pressure and temperature transformations passing from the chamber to atmosphere through the water. The seal includes the submerged orifice with a free wheeling guiding system upstream of the orifice. Immediately ahead of the guiding system, the parameters of the foam extrudate are sensed to control the configuration of the orifice on a continuous basis. Before the extrudate passes into the water baffle seal it moves over a floating dancer roll, the position of which controls a haul-off such as a vacuum belt at the tail end of the system. This avoids pushing on the extrudate.
Abstract:
An extrusion system utilizes single or tandem extruders and a mixer-cooler to extrude a foamable extrudate through a die in a sealable chamber. The foamable extrudate is shaped and calibrated within the chamber. The die is mounted on the end of a gel tube projecting through a gland seal in a fixed bulkhead forming the upstream end of the chamber. The gel tube and mixer-cooler are mounted on a movable carriage, movement of which may be used to adjust the die with respect to shaping and calibrating equipment inside the chamber. The mixer-cooler achieves a selected narrow range of uniform viscosity of the melt at the die depending on the size of the product and density. The chamber is preferably a vacuum chamber producing low density foams. The product exits the chamber to atmosphere on a continuous basis through a submerged orifice in a water baffle immersion seal. The mixer-cooler enables a large size low density product to be produced with uniform cellular structure without cell collapse or density gradients, as the product is subjected to the pressure and temperature transformations passing from the chamber to atmosphere through the water. The seal includes the submerged orifice with a free wheeling guiding system upstream of the orifice. Immediately ahead of the guiding system, the parameters of the foam extrudate are sensed to control the configuration of the orifice on a continuous basis. Before the extrudate passes into the water baffle seal it moves over a floating dancer roll, the position of which controls a haul-off such as a vacuum belt at the tail end of the system. This avoids pushing on the extrudate.
Abstract:
A high vacuum housing with a first and second housing part and in which the housing parts are secured together to form an interior housing chamber. In order to seal the housing parts, an annular outwardly extending sealing ring having a flat radial surface is formed on one of the housing parts. An annular alignment recess is formed on the other housing part which registers with and receives the alignment ring. A thin walled seal is disposed between the housing parts. When the housing parts are secured together by bolts, an outer periphery of the seal is compressibly sandwiched between the flat radial surface on the sealing ring and the flat surface on the second housing part thus sealing the window to the housing.
Abstract:
The present invention is an apparatus for separating volatile from nonvolatile substances, separation of volatile substances, one from the other, and for performing various chemical reactions. In particular, an apparatus which performs these functions utilizing a combination of above ambient temperatures and above one inch of mercury vacuum within a rotating vessel. The apparatus uses a conventional rotary vacuum seal. The apparatus, however, operates well above the maximum operating temperature of the conventional rotary vacuum seal by isolating and cooling the conventional rotary vacuum seal.
Abstract:
There is a gap between the respective inner regions of the end face of the cylindrical side wall and the abutting portion of the top plate, which are situated inside the seal member. Even though the top plate is bent inward by atmospheric pressure when the container is decompressed to a predetermined degree of vacuum, therefore, the abutting portion thereof cannot come into contact with the inner edge of the end face of the cylindrical side wall. Thus, if decompression and exposure to atmospheric pressure are repeated to bend the cylindrical side wall repeatedly, there is no possibility of the inner edge portion of the end face of the cylindrical side wall being separated or rubbed off to produce dust. Moreover, the cylindrical side wall and top plate are joined together in the region outside the seal member. If dust is produced by the contact between the cylindrical side wall and top plate at their junctions outside the seal member, therefore, it is prevented from entering the container by the seal member. Thus, a clean atmosphere in the container cannot be contaminated by the dust.