| 摘要 |
PURPOSE:To prevent rotation of conical square threads from interferring each other by forming left and right conical square threads meshing with each other on the respective surfaces of two conical bodies having no-parallel axes, while receiving respective conical bodies having the shafts meshing with each other in a casing provided with an intake port and a discharge port. CONSTITUTION:While two square thread rotor 2 are installed with the respective axes (a) intersecting each other at a predetermined angle under the non-parallel condition, right and left conical square threads R, L meshing with each other with a predetermined pitch are formed on the respective surfaces of said rotors. And each thread rotor 2 is formed from the large diameter portion 3 to the small diameter portion 4 with a cavity therein, while one shaft 1 projecting from the small diameter portion 4 is interlocked with a drive end 1'. Also, respective shafts 1 are supported by respective bearings while meshing with each other through bevel type timing gears 13 to be received in a casing 5. On the other hand, a discharge port 23 is provided on the small diameter 4 side of casing 5 while an intake port 22 is provided on an end cover 10 of casing 5.
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