摘要:
A device for restoring a rotary member into a defined normal position, with a spatially stationary fixed catch, which predetermines the normal position, and a driver catch, which is coupled to the rotary member and can be moved past the fixed catch, each of which has stop surfaces embodied on each of its opposing sides, and with a clamping spring, which encompasses the catches in a prestressed fashion with two bent spring legs, in order to prevent a rotary play between the clamping spring and the catches in the normal position, and an elastic spring element in at least one leg section of the spring legs extending across the stop surfaces of the catches, which spring element is supported against the associated stop surface with a spring force that is less powerful than the prestressing force of the clamping spring.
摘要:
Process for separating water from a gas mixture, obtained in the manufacture of vinyl acetate by reacting ethylene with acetic acid and oxygen in contact with catalysts containing palladium or palladium compounds in the gaseous phase said gas mixture consisting essentially of acetic acid, vinyl acetate, water, carbon dioxide and ethylene, wherein(a) the gas mixture leaving the reaction zone is condensed to give a condensate containing the major portion of acetic acid, vinyl acetate and water and(b) an acetic acid solution containing the residual amount of vinyl acetate and water being prepared by absorption of the non-condensed gas in acetic acid, is characterized in that(c) the condensate obtained in step (a) and the solution obtained in step (b) are introduced separately from each other into the same distillation column, the feeding point of the condensate being above the feeding point of the solution, the water is distilled off at the head of said column as azeotrope together with the vinyl acetate and(d) the water phase is removed from the distillate separating into a water phase and a vinyl acetate phase.
摘要:
The present invention provides desazapurine-nucleoside derivatives of the general formula: wherein X is a nitrogen atom or a methine radical, W is a nitrogen atom or a C—R4 radical, R1, R2, R3 and R4, which can be the same or different, are hydrogen or halogen atoms, hydroxyl or mercapto groups, lower alkyl, lower alkylthio, lower alkoxy, aralkyl, aralkoxy or aryloxy radicals or amino groups optionally substituted once or twice, R5 is a hydrogen atom or a hydroxyl group, R6 and R7 are each hydrogen atoms or one of them is a halogen atom or a cyano or azido group or an amino group optionally substituted once or twice, whereby one of R6 and R7 can also be a hydroxyl group when X is a methine radical and, in addition, R5 and R7 can together also represent a further valency bond between C-2′ and C-3′ and Y is a hydrogen atom or a mono-, di- or tri-phosphate group.
摘要:
The invention is directed to an intake apparatus for an internal combustion engine with the apparatus including an intake pipe defining a longitudinal axis and a throttle flap mounted on the intake pipe, the throttle flap including a shaft having a shaft radius (r), a throttle flap having a thickness (t) and being mounted on the shaft to be rotatable through a displacement angle, and the shaft having a diameter (2r) greater than the thickness (t); a potentiometer operatively connected to the throttle flap for detecting the displacement angle thereof; a full-load stop for fixing the displacement angle of the flap at full load; the throttle flap being adjusted to a stop angle AW of the throttle flap by impacting on the full-load stop pursuant to the relationship:(2) (KETW)+(2) (AETW).congruent.(2) (WSW)-DAWwherein: WSW is a shaft shading angle, the angle of the throttle flap at which points on the throttle flap disposed farthest away from the shaft lie at a distance from the longitudinal axis equal to the radius (r); KETW is a permissible corresponding tolerance angle corresponding to the tolerance of the potentiometer; AETW is a permissible tolerance angle for the stop of the throttle flap; and, DAW is the difference angle by which a rearward tolerance limit for the throttle flap stop lies ahead of a rearward shaft shading limit. Because of the increased tolerance, adjusting devices can be omitted or adjusting measures such as preparatory procedures can be avoided.
摘要:
An arrangement for converting a multi-track stream of bottles to a single-track stream of bottles. An intermediate conveyer is disposed between a feeding mechanism, which is provided with guide rails, and a withdrawal mechanism, which is provided with guide rails. The upper sides of the conveyer belts of the intermediate conveyer form a conversion region in which the conveyer belts are disposed flushly adjacent one another in the shape of an inclined plane which is inclined transverse to the direction in which bottles are conveyed from the upper side of the feeding mechanism to the upper side of the withdrawal mechanism. The conversion region is formed by the upper sides of the conveyer belts of the intermediate conveyer and of the withdrawal mechanism. The track width of the conversion region corresponds to the track width of the heating mechanism, with the conversion region being disposed downstream of the feeding mechanism and essentially coinciding in level and track with the latter. The conversion region is provided with a linear guide rail.
摘要:
A device with a plurality of filling elements for filling-in particular still liquids into bottles and similar vessels, in which each of the filling elements respectively comprises an axially displaceable filling pipe and a gas tube with an opening. The filling pipe has on its circumference provided a sealing element for the respective bottle or vessel mouth, which sealing element is axially displaceable thereon by means of a level adjusting device. The adjusting devices for the sealing elements are operable by a mechanism and through the intervention of transmitting members yieldable at least with regard to the axial movement of the filling pipes are drivingly connected to a common drive or are each connected to an individual drive, while in the last mentioned instance the individual devices are controllable by a common control mechanism.
摘要:
A method for producing a seal-welded connection between a stamped grid designed to conduct electricity and embedded in a laser-transparent plastic, and a plastic component positioned underneath the stamped grid, using a laser method, including the following method steps, executable in any order: a) carrying out a first welding operation by emitting laser beams, the laser beams falling on the surface of the stamped grid embedded in the plastic, at an angle α, and the angle α being inclined in a positive direction with respect to the vertical; and b) carrying out a further welding operation by emitting laser beams, the laser beams falling on the surface of the stamped grid embedded in the plastic, at an angle α, and the angle α being inclined in a negative direction with respect to the vertical.
摘要:
In a flap valve for controlling a gas flow, with a valve tube (11) that carries the gas flow and with a valve flap (14) that is pivotable in the valve tube (11) and that in its closing position rests sealingly with its outer contour on the inner wall of a flexible thin-walled tube (20) disposed coaxially in the valve tube (11), and with a valve shaft (15) connected to the valve flap (14) in a manner fixed against relative rotation, it is provided, in order to attain a sensitive adjustment of the valve flap (14) and for the sake of technologically simple, inexpensive production of the flap valve (14), that the valve shaft (15) is positioned at an acute angle (&ggr;) relative to the valve plane, and the thin-walled tube (20) is formed directly and integrally onto the valve tube (11) (FIG. 2).
摘要:
A bearing is fixed in a housing in such a way that it is fixed axially relative to a throttle flap shaft which remains rotatable relative to the bearing. The throttle flap shaft can then be gripped relative to the bearing, in a bearing recess of the throttle flap housing. The throttle device is suitable particularly for vehicles having a throttle-type internal combustion engine.
摘要:
A process for reducing the phosphate content in waste water from the preparation of salts of ascorbic acid 2-monophosphate comprisesA. treating the waste water from the crystallization of the metal salts of ascorbic acid 2-monophosphate with an alkali metal or alkaline earth metal hypochlorite, chlorine or H.sub.2 O.sub.2,andB. precipitating, at a pH of 9-12, the inorganic phosphate which has been produced from organically bound phosphorus and/or was present in the waste water, especially as calcium phosphate.
摘要翻译:从制备抗坏血酸2-单磷酸盐的盐中降低废水中的磷酸盐含量的方法包括:用碱金属或碱土金属次氯酸盐对2-一磷酸抗坏血酸的金属盐进行结晶处理废水 ,氯或H 2 O 2,和B.在pH为9-12的条件下沉淀出由有机结合的磷生成的和/或存在于废水中,特别是作为磷酸钙的无机磷酸盐。