ROOTS ROTARY GEAR PUMP MECHANISM

Impellers 1 and 2 rotate about fixed axes A and B and have identical and symmetrically arranged teeth d whose profile is made up of portions of cycle curves. When impellers 1 and 2 rotate, fluid is continuously delivered in the direction of arrows a and b. The suction and discharge chambers are separated by imparting special profiles to impellers 1 and 2. The impellers are driven by two meshing id…