A cavitation reactor having a pulse valve for receiving an input fluid flow and generating a pulsed output flow that is provided to the input of a resonance chamber, such as a tube. The pulse valve uses a shaft with a number of regularly spaced lands to form fluid conduits between an input port and
A cavitation reactor having a pulse valve for receiving an input fluid flow and generating a pulsed output flow that is provided to the input of a resonance chamber, such as a tube. The pulse valve uses a shaft with a number of regularly spaced lands to form fluid conduits between an input port and the output port connected to the resonance tube to cause fluid communication between the input and output ports to be regularly opened and closed, thereby producing a pulsed output that drives the formation of resonance waves in the resonance chamber. The shaft is rotated at a suitable frequency to produce cavitation bubbles that collapse in the resonance chamber without damaging the valve shaft.
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1. A pulse valve comprising: (a) a housing having a cylindrical bore having an axis extending laterally, the bore being defined by an inner cylindrical surface of the housing, the housing having an outer surface and having at least two pairs of ports, each pair of ports comprising a pulse valve segm
1. A pulse valve comprising: (a) a housing having a cylindrical bore having an axis extending laterally, the bore being defined by an inner cylindrical surface of the housing, the housing having an outer surface and having at least two pairs of ports, each pair of ports comprising a pulse valve segment input port and a pulse valve segment output port, each of the ports providing a separate fluid communication path between the outer surface of the housing and the cylindrical bore; and(b) a multi-segment valve shaft coaxially positioned in the cylindrical bore and having at least front and rear segments, each segment comprising a central portion and at least two lands extending radially therefrom, each land having a surface and having an end proximate to the cylindrical inner surface of the housing, the valve shaft being rotatable inside the cylindrical bore around the bore axis by a drive shaft connected to the central portion of each segment, each pair of adjacent segments being separated by a disk shaped separator having a cylindrical outer surface and being sized so the outer surface of the separator is proximate to the cylindrical inner surface of the housing so that fluid cannot pass between the segments,wherein the lands extend laterally so that a fluid conduit is defined by the surfaces of each pair of adjacent lands in each segment and the central portion therebetween, in combination with the housing and the separators,wherein adjacent pairs of ports are laterally spaced apart from each other and positioned so that by rotating the valve shaft via the drive shaft, each of the pairs of ports may be brought into fluid communication with each of the fluid conduits of one of the segments,wherein the valve shaft is continuously rotatable so that each fluid conduit in each segment moves between a closed position in which the pulse valve segment input port of that segment and the pulse valve segment output port of that segment are not in fluid communication with each other, so that the fluid communication path of that segment is closed, and an open position in which the pulse valve segment input port of that segment and the pulse valve segment output port of that segment are in fluid communication with each other, so that the fluid communication path of that segment is open and fluid flows from the pulse valve segment input port of that segment, through the fluid conduit and out the pulse valve segment output port of that segment. 2. The pulse valve of claim 1, wherein the segments are of like size and configuration, and wherein the valve shaft further comprises a third segment positioned between the front and rear segments. 3. The pulse valve of claim 2, wherein the multi-segment valve shaft has exactly three segments, each segment having three regularly spaced lands, the radial positions of the lands of the front segment being offset from the radial positions of the lands in the third segment by about forty degrees, and the radial positions of the lands of the third segment being offset from the radial positions of the lands in the rear segment by about forty degrees. 4. The pulse valve of claim 1, further comprising an output manifold having one manifold input port for each segment, each manifold input port being in fluid communication with one of the pulse valve segment output ports, and the output manifold having a single manifold output port, so that fluid passing out all the pulse valve segment output ports exits the manifold output port, and wherein the lands within each segment are regularly spaced so that when fluid is injected into the pulse valve segment input ports, a regularly pulsed fluid flow is produced at the single manifold output port. 5. The pulse valve of claim 1, wherein the multi-segment valve shaft comprises six segments.
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