Abstract:
A door closure system for a vacuum sterilization chamber includes a mechanism to allow movement of the door with respect to the chamber at the latch and more preferably at the hinge. In one aspect the hinge attaches to the chamber via screws through elongated slots in the hinge. A spring biases the door toward the chamber. Forces applied by the hinge and by an opposite latch are normalized.
Abstract:
The invention relates to the field of powder metallurgy, in particular to the design of autoclaves for manufacturing of composite materials by treatment of workpieces of discrete materials, mostly powders, at high pressures and temperatures. The autoclave module contains the vessel that includes hermetically sealed movable end closures, the rams restricting the axial shift of these closures, and the pressure yoke with columns and winding made of high-strength steel wire, whereby the pressure yoke is made in the form of three oval yoke sectionsnulltwo lateral sections encompassing the rams, and one central section encompassing the rams and the vessel with closures, all of them equidistant from each other on the ram's length, whereby each of the lateral oval sections is made in such a way as to allow opposite shift while the central section is made in such a way as to allow shift in the direction which is perpendicular to the vessel's axis and parallel to the rams' axis, for a length ensuring free withdrawal of the rams and the end closures. The invention allows to reduce the metal consumption of the pressure module by a factor of 2 to 3 compared to the known analogs, and to enhance the reliability and the operational safety of the apparatus.
Abstract:
An improved closure device for a laboratory scale chemical reactor which provides fast and efficient opening and closing of the reaction vessel as well as providing a simple and reliable system for relieving excessive pressure should it build up in the reaction vessel. The reactor is sealed by use of a substantially flat head that is seated against the rim of the reaction vessel by pressure which is generated by a variably adjustable closure means. Since the closure pressure can be adjusted to any value within the design limitations of the closure means, the closure means also operates as a pressure relief valve.
Abstract:
An instrument is disclosed for carrying out controlled microwave assisted chemical processes, and that is particularly useful for handling relatively small samples. The instrument includes a microwave-transparent reaction vessel with an open mouth, a pressure-resistant seal on the mouth of the vessel, and a needle, portions of which penetrate the seal with a first end of the needle and provide fluid communication into the vessel. A pressure transducer is at the opposite end of the needle and in fluid communication with the interior of the vessel through the needle. The instrument defines a pressure control flow path from a portion of the needle outside of the vessel to a fluid port, the flow path being in communication with the needle, the interior of the vessel and the transducer. A controllable pressure release valve for the flow path is-associated with the port.
Abstract:
The invention relates to a device 51 for closing a plurality of digestion vessels 1 the openings of which are in each case covered by a cover 3, comprising a plurality of positioning spaces 53 for the digestion vessels, the positioning spaces 53 being able to be distributed in a circumferential row R1 and being accessible from outside, and a plurality of closing devices 73 for pressing the covers 3 against the vessels. In order to improve the capacity of the device 51 with regard to the number of digestion vessels 1 further inner positioning spaces 53 are arranged to be offset inwardly with respect to said positioning spaces 53.
Abstract:
The present invention provides a substantially remote operable system for connecting and disconnecting a vessel. The system comprises a substantially remotely operable joint connector for connecting and disconnecting structural units. The system and the method using the system may also comprise a remote operable closure transport for removing a vessel closure from an opening in the vessel, and a substantially remote operable removal system for allowing material to be emptied from the vessel to increase operational efficiency.
Abstract:
A method and 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:
A vacuum sealing structure (1) for connecting a first connection part (13) with a second connection part (43) via a gasket (31). The first connection part (13) or the second connection part (43) is provided with a jaw (43a), having an end portion which is broadened outwardly of a pipe member forming a vacuum passage, and a support member (21) having an annular tapered groove (21a). The second connection part (43a) directly contacts the gasket (31) and a tapered groove (21a). Thus the second connection part tapered jaw (43a) is tightly pressed against the gasket (31) by fastening the support member (21) with a fastening member (15), thereby achieving a vacuum sealing structure for facilitating the sealing of a body (2) to be vacuum sealed. The body may be a viewing port (41). Since it is not necessary to secure the body (2) to a flange (21), welding for securing will not be required and no trouble will be caused with sealing. In the event that the body (2) is damaged, all that is required is to replace the body itself, enabling easy maintenance.
Abstract:
A device for high-pressure treatment, in particular of liquid substances which contain components with a consistency different from that of the liquid. The device comprises a cylinder member (1), two end members (2, 3), a high-pressure piston (4), two high-pressure seals (8, 9) and connection means comprising channels and valve members to conduct the substance to and from the cylinder member (1). When the substance is pressurized, the cylinder member (1), at least one of the end members (3), the high-pressure piston (4) and the two high-pressure seals (8, 9) delimit a high-pressure chamber (10). The connection means are arranged outside the high-pressure chamber and preferably in respective end members (2, 3).
Abstract:
A closure for a pressure vessel of the type in which the pressure vessel door is preferably slidably attached to the pressure vessel by door retention assemblies. The door is constructed of a plate member to which bars are attached at opposing edges of the door. Slider portions are inset in a portion of the surface of each slider bar to enhance sliding contact with the door retention assemblies in sliding door embodiments of the invention. A plurality of reinforcing members span the plate member between slider bars and taper from a maximum elevation at or adjacent the center of the reinforcing member to a minimum elevation at the edges of the reinforcing member, where a flange sandwiches the slider bars between the plate member and the flange.