| 摘要 |
A ball dropper assembly includes a main body and a ball injector assembly. The main body includes a fluid bore defining a fluid passage and radial bore intersecting the fluid bore. The ball injector assembly includes an inner ball deployment housing and an outer ball deployment housing disposed within the radial bore. The outer ball deployment housing has a plurality of gate members operable between a closed position, to retain the ball within the inner housing, and an open position, to allow deployment of the ball from the inner housing and into the fluid bore. The ball injector assembly is operable to rotate the inner housing with respect to the outer housing to move the plurality of gate members from the closed position to the open position and to deploy the ball into the fluid passage. |
