Patent ID: 6763852
Filing Date: 2004-07-20
Classification: F16K,Y10T

Abstract:
An alternating distributor for high-viscosity liquids comprising a central distribution chamber, a product input line within said central distribution chamber and two product discharge valves communicating with said product input line,wherein each of the product discharge valves is comprised of a housing within which a guide cylinder having a laterally branching product discharge line and a housing enlargement on the side opposite the branching of the product discharge line are located, together with a valve piston having a valve block movable in the housing in the axial direction which, in the closed position, engages into a valve seat inset into the wall of the central distribution chamber, and optionally an auxiliary valve, said two product discharge valves being in a Y-shaped arrangement relative to the product input line wherein the center lines of the two product discharge valves run at an angle of 100 to 140Â° to one another and at an angle of 50 to 70Â° to the center line of the product input line, the valve block is provided with a mushroom-shaped displacer headpiece which, when the valve is dosed, is positioned fully within the central distribution chamber and forms a gap relative to the wall of the distribution chamber allowing product flow and having a shaft which, when the valve is open, is positioned at the location of the branching of the product discharge line, the central distribution chamber, including the displacer headpiece positioned in it possesses only surfaces and edges which run at an acute or obtuse angle to the flow of product with exclusion of surfaces or edges arranged perpendicularly to the product flow, the diameters of (a) the valve piston (b), the valve seat (c), the shaft and (d) the mushroom head of the displacer headpiece are in the ratio a:b:c=1:(0.75 to 0.90):(0.4 to 0.5), with d=(0.90 to 0.99)*b, and the heights of (e) the valve block (f), the shaft (g), the lower part and (h) the upper part of the cap of the mushroom-shaped displacer headpiece and (i) the width of the gap between the headpiece and wall when the valve is closed are in the ratio e:f:g:h:i=(0.6 to 0.8):(1.3 to 1.7): 3:(0.95 to 1.06):(0.2 to 0.35), with d=(0.9 to 1.1)*(a+h), e+f+g=(1.0 to 1.05)*t and t is the diameter of product discharge line at the branching point.