摘要:
Agglomerated vanadium oxides of the formula V.sub.2 O.sub.x, wherein x is between 3.8 and 4.6, are prepared by thermally decomposing ammonium polyvanadate at 600.degree.-900.degree. C and permitting the resultant solid decomposition products and reducing gases to react. The reducing gases displace the air and/or scavenging gas in the reaction zone.
摘要翻译:通过在600-900℃下热分解聚钒酸铵并允许所得的固体分解产物和还原气体反应制备式V 2 O x的结合的钒氧化物,其中x为3.8至4.6。 还原气体置换反应区中的空气和/或清除气体。
摘要:
Apparatus for humidifying a respiratory gas includes a liquid storage space for storage of a liquid, a humidifying region for loading the respiratory gas with the liquid by the respiratory gas coming into contact in the humidifying region with the liquid, a respiratory gas supply device for supplying the respiratory gas to the humidifying region, a respiratory gas withdrawal device for withdrawal of the humidified respiratory gas from the humidifying region, and a partial-amount discharge device for passing a partial amount of the liquid stored in the liquid storage space into the humidifying region.
摘要:
A cable holder 1 for a large number of connection cables 2, 4, 6, 8 of an electrical or electronic control device, in particular of an electronic ballast of a lamp. The cable holder 1 has a base body 24, in which receptacles 32, 34, 36, 50 are formed which surround, at least in sections, an insulating sheath of the connection cables 2, 4, 6, 8 and are associated with apertures 38, 40, 42, 52, which open out into an end face 44 of the base body 24, cable ends 12, 14, 16, 18, from which the insulation has been stripped, of the connection cables 2, 4, 6, 8 extending through the apertures 38, 40, 42, 52.
摘要:
The invention relates to a microswitch comprising a housing, a switching plunger arranged in displaced relationship with the centre of said housing and projecting from said housing, contacts which are arranged on the housing side located opposite the switching plunger, and a contact bridge which is adapted to be transferred from a first to a second switching position through the switching plunger and a bistable spring, said switching plunger being provided with a cantilevered arm which projects on one side and on the projecting end of which a downholder is provided for positive opening of the contact bridge. In order to improve a microswitch of the type mentioned at the beginning in such a way that its overall size can be reduced still further and that a reliable positive opening operation will take place, the present invention is so conceived that, on the switching plunger side located opposite the cantilevered arm, a support projection is arranged, which acts on a resilient part of the spring in spaced relationship with the switching plunger, in such a way that, when the switching plunger is pressed down, a moment (M) will be applied via the support projection to the cantilevered arm of the switching plunger in the opening direction of the contact bridge.
摘要:
Process and apparatus for drying a material web. The process includes guiding the material web to at least one heated area having a jacket surface of a cylinder having a diameter of between about 4-10 meters, setting the material web, having a dry content of between about 45-55%, onto the at least one heated area, maintaining the material web in uninterrupted contact with the at least one heated area at least until the material web achieves a firmness sufficient for detaching the material web from the heated area, and detaching the material web from the at least one heated area with a dry content of between about 55%-65%.
摘要:
In a drying section of a machine for producing a material web such as, in particular, a paper or cardboard web, a pick-up suction roll, in particular a larger pick-up suction roll, is provided between the last pressing nip of a pressing section and a subsequent impingement drying unit, which suction roll removes the material web from a pressing felt guided through the pressing nip or from a transfer belt and transfers it to the impingement drying unit.
摘要:
Process for determining disturbances of a moisture cross profile of a fibrous material web in a paper making machine, a paper making machine, and a measuring arrangement for measuring the disturbances, the process including guiding the fibrous material web by way of at least one water-permeable belt and collecting and draining off water released from the belt. The water is collected by several sections separated from one another. The process further includes measuring per time unit, the amount of water in each section, wherein the sections extend at right angles to a web running direction over only a partial section of the fibrous material web. The paper making machine includes at least one water-permeable belt, the belt being wrapped around a roll. The measuring arrangement includes a water collection device having the form of one of a trough or channel.
摘要:
A drying cylinder for drying a fibrous web, the cylinder having an inner chamber connected to a pressurized air source; and an outer cylinder jacket having an air-permeable region which is adapted to contact the fibrous material web. Also a drying section for drying a fibrous web, including at least one drying cylinder having an inner chamber and an outer cylinder jacket having an air-permeable region; a circulating belt arranged to press the fibrous web against the outer cylinder jacket and belt being arranged to partially wrap around the drying cylinder; and a pressurized air source connected to the inner chamber is described. Finally, a process for drying a fibrous web in an apparatus that includes at least one drying cylinder having an inner chamber and an outer cylinder jacket having an air permeable region, the process including pressurizing the inner chamber of the drying cylinder with air; and guiding the fibrous material web partially around the drying cylinder with a circulating belt wherein the circulating belt presses the fibrous material web against the air permeable portion of the cylinder jacket is described.
摘要:
A device for securing an actuating lever, e.g. a finger lever, of a valve control mechanism of an internal combustion engine to a support element, with the actuating lever being formed with a concave recess receiving a spherical end of the support element for allowing the actuating lever to pivot relative to the support element includes a connecting element received in an undercut of a displaceable piston of the support element and having a thickness which is smaller than a width of the undercut to effect a free movement of the connecting element within the undercut in all pivoted positions of the actuating lever.
摘要:
A dryer section of a paper making machine is divided into several dryer groups, each comprising a plurality of dryer cylinders, a plurality of reversing rolls between neighboring cylinders and a respective web supporting belt wrapping around the cylinders of a dryer group. Within each dryer group, the web travels, in continuous contact with the supporting belt, alternately over the dryer cylinders and the reversing rolls so that the web comes into direct contact with the cylinders and the supporting belt comes into direct contact with the reversing rolls. The cylinders are arranged in several rows which are inclined to the vertical, alternately rearwardly and forwardly defining V-shaped double rows. The end of each row and the starting point of the following row are formed by two cylinders arranged horizontally alongside of each other. The rows of dryer cylinders succeed each other in the manner of a zig-zag line. Each inclined row comprises about three cylinders.