SPRAY NOZZLE FOR DELIVERING LUBRICANT TO WHEEL FLANGE Russian patent published in 1994 - IPC

FIELD: railway traffic. SUBSTANCE: spray nozzle has body 1 with air delivery channel 3 and a through threaded channel accommodating sprayer 4. The latter has the form of a cylinder given a stepped configuration which outer thread surpasses in diameter the sprayer cylindrical part followed by a truncated cone having air channels 5 positioned on its surface at a tangent to its periphery. Sprayer 4 also accommodates through stepped axial channel 6 having needle valve 7 arranged in it. Sprayer 4 is positioned in conic nozzle 10 with through axial outlet opening 11 provided in it. The inner cylindrical surface of conic nozzle 10 and the discharge one of sprayer 4 have cavity 13 interposed between them with this cavity connecting to air delivery channel 3. The conic nozzle, ring seal 9 and valve 7 define cavity 12 respectively with its inner surface, the outer one and the conic end. The generatrix length of the nozzle in its conic part and the outer diameter and the cross section of the valve ring seal relates to the length of the valve tip in its conic part as V=V_p-b·L·h_сm. V=volume of the cavity defined by the nozzle in its conic surface and by those needle tip and the ring seal. V_p = maximum volume of lubricant delivered by a plunger pump in one stroke. = thickness of the lubricant layer provided on the wheel flange. R_a = mean deviation from the center line of the height characteristic of the surface microirregularities of the wheel flange. K = viscosity coefficient of the lubricant; L = V . t = running time of the plunger pump. B = width of the lubricant streak at the surface of the wheel flange. EFFECT: increased velocity of lubrication due to using compressed air. 2 cl, 2 dwg