| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: invention is related to machine building, in particular, to helical rotor pumps, and may be used in design of helical rotor pumps intended for pumping of different compositions in construction, petrochemical, food and other industries. In helical rotor pump that comprises stator, rotor in the form of single-thread screw, round cross section of which is displaced relative to axis of screw rotation by value of eccentricity, one or several hoses installed in stator channel and inserted into long grooves arranged in cylindrical channel of stator. Profile of long grooves is arranged in the form of circular arc and line segments from arc ends to cylindrical channel. At that radius of long grooves profile circular arc and diameter of rotor cross section are associated by certain ratio. Return leaks of pumped medium are eliminated. ^ EFFECT: elimination of return leaks of pumped medium. ^ 2 dwg |
