SECTIONAL HYDRAULIC DISTRIBUTOR Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: hydraulic distributor consists of pressure section, return section and set of working sections which consist of distributing and bearing plates. Working section consists of slide valve whose one plane adjoins plane of distributing plate and other plane adjoins the plane of adjacent section; slide valve is arranged inside bearing plate; working section also has rods of the slide valve linear motion mechanism and circular seal for sealing the joint between distributing and bearing plates. In center portion of slide valve there is distributing port in form of longitudinal and transverse intersecting slots. Edges of transverse slot and outer lateral edges of slide valve form pressure and return cut-off edges. Intake ports are brought out to plane of distributing plate. Pressure passages of adjacent sections are connected through central port and return passages are connected through chamber bounded by lateral edges of slide valve and seal 9. When slide valve shifts, intake ports located on one side from transverse slot are connected to pressure passage and those which are located on other side from transverse slot are connected to return passage. EFFECT: enhanced efficiency. 5 cl, 9 dwg