| 摘要 |
The pump with two rotors contains a body with admission and discharge ducts, two identical rotors with three kinematically synchronized blades, and the axes of symmetry of the blades are placed at an angle of 120. The working surface of the blade is formed by an evolvent curve, for the construction of which the centre of theoretical circumference of the engagement between the rotors coincides with the centre of the triangle, being the base of the triangular prism, wherein the rotor is inscribed. The relationship between the radius of circumference and the triangle side is reproduced by means of the formula:where R1 is the radius of theoretical circumference and is the triangle side.
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