Device for synchronously and symmetrically making material collide

A device for making a material collide in a rotating system, comprising:

• a rotor which can rotate about a central axis of rotation in clockwise direction, here called forward, as well as in anti-clockwise direction, here called backward;
• a forward guide member, which is supported by said rotor and is provided with a forward directed guide face with an inner and an outer edge, for accelerating and guiding a stream of the material which, in a region close to said axis of rotation, is metered on said rotor, said forward guide member extending in the direction of the external edge of said rotor, which material comes off the said forward guide member and is sent into a backward spiral stream (Sb), when rotating forward and when seen from a viewpoint which moves together with said forward guide member;
• a backward guide member, which is supported by said rotor and is at least provided with a backward directed guide face with an inner and an outer edge, for accelerating and guiding a stream of the material which, in a region close to said axis of rotation, is metered on said rotor, said backward guide member extending in the direction of the external edge of said rotor, which material comes off said backward guide member and is sent into a forward spiral stream (Sf), when rotating backward and when seen from a viewpoint which moves together with said backward guide member;
• a forward impact unit which is supported by said rotor and is linked with said forward guide member and includes a forward impact member which is provided with a forward directed impact face, which is associated with said forward guide member for simultaneously loading and accelerating the stream of material on impact when rotating forward, said forward directed impact face lies entirely behind, when seen in the direction of rotation, the radial line on which is situated the location where the as yet uncollided stream of material leaves said forward guide member, and at a greater radial distance from said axis of rotation than the location at which the as yet uncollided stream of material leaves said forward guide member, the position of said forward impact face is determined by the forward synchronization angle (θf) between the radial line on which is situated the location where the as yet uncollided stream of material leaves said forward guide member and the radial line on which is situated the location where said backward spiral stream (Sb) of the as yet uncollided stream of material and the forward path (Cf) of said forward impact face intersect one another, said forward synchronization angle (θf) is selected in such a manner that the arrival of the as yet uncollided material at the location where said backward spiral stream (Sb) and said forward path (Cf) intersect one another is synchronized with the arrival at the same location of said forward impact face, said forward impact face is directed virtually transversely, when seen in the plane of the rotation, to said backward spiral stream (Sb) which the as yet uncollided material describes, when seen from a viewpoint which moves together with said forward impact member;
• a backward impact unit which is supported by said rotor and is linked with said backward guide member and includes a backward impact member which is provided with a backward directed impact face, which is associated with said backward guide member for simultaneously loading and accelerating the stream of material on impact when rotating backward, said backward directed impact face lies entirely behind, when seen in the direction of rotation, the radial line on which is situated the location where the as yet uncollided stream of material leaves said backward guide member, and at a greater radial distance from said axis of rotation than the location at which the as yet uncollided stream of material leaves said backward guide member, the position of said backward impact face is determined by the backward synchronization angle (θb) between the radial line on which is situated the location where the as yet uncollided stream of material leaves said backward guide member and the radial line on which is situated the location where said forward spiral stream (Sf) of the as yet uncollided stream of material and the backward path (Cb) of said backward impact face intersect one another, said backward synchronization angle (θb) is selected in such a manner that the arrival of the as yet uncollided material at the location where said forward spiral stream (Sf) and said backward path (Cb) intersect one another is synchronized with the arrival at the same location of said backward impact face, said backward impact face is directed virtually transversely, when seen in the plane of the rotation, to said forward spiral stream (Sf) which the as yet uncollided material describes, when seen from a viewpoint which moves together with said backward impact member in such a way that said forward directed second spiral stream does not interfere with any of the forward directed impact faces.