摘要:
The invention relates to a blade (10) for screens for the treatment of a fibrous suspension, said blade (10) being mountable on a rotor (1) of the screen. According to the invention, the blade (10) has a curved leading edge (11) or curved envelope (21) of the leading edge (11), the curvature extending in the direction of the trailing edge (12), and a curved trailing edge (12) or curved envelope (22) of the trailing edge (12), said curvature extending in the same direction (23) as the other one. The invention also relates to a screen comprising a rotor (1) on which the disclosed blades (10) are mounted.
摘要:
The invention relates to a method for the preparation of electrical and electronic components for the recovery of valuable substances, such as, for example, metals contained in printed circuit boards. The electrical or electronic components are mechanically precomminuted and subsequently mixed with a liquid and subjected to a wet milling process (5).
摘要:
Den Gegenstand dieser Erfindung bildet eine Antriebseinheit für einen Stanzautomat oder eine Presse zum Bewegen eines Stößels mit mindestens einem Elektromotor (17), der einen Stator (4) und einen Rotor (6) aufweist, die konzentrisch zueinander angeordnet sind, wobei der Stator (4) drehfest mit dem Pressengestell (1) verbunden ist und eine Abtriebswelle (8) zum Bewegen des Stößels durch den Rotor (6) antreibbar ist. Erfindungsgemäß ist zwischen dem Rotor (6) und der Abtriebswelle (8) eine Schleppkurbel (5) angeordnet ist.
摘要:
A method for controlling the atmosphere in a protective gas chamber for the continuous treatment of metal strips. A metal strip is guided into and out of the protective gas chamber via locks. At least one lock has at least two sealing elements for the metal strip which runs through it, with the result that a sealed chamber is formed between the two sealing elements. The gas pressure (P2, PD) is measured in the protective gas chamber and in the sealed chamber of the lock and the pressure (PD) in the sealed chamber is regulated, to be precise in such a way that, during operation, the differential pressure between the protective gas chamber and the sealed chamber is kept as far as possible to an optimum value.