| 摘要 |
This invention relates to a grit protector for rotating fluid processing equipment. The protector is placed in or adjacent the seal cavity of the equipment and includes an axial portion and a generally radial flange which, when the device is within the seal cavity, has an inner diameter slightly greater than the shaft. The flange has at least one low flow vent therein, the vent being defined by a radial slit in the flange, an arcuate slit along the periphery of the flange adjacent the axial portion, and a bend line extending from the radial inner end of the radial slit to the extended end of the arcuate slit. The material of the slit as bounded by the slits and the bend line is curved inwardly and radially outwardly to define a vent entrance adjacent the first slit to define a flap. The flap has a short generally straight portion extending from the vent entrance and then curves smoothly towards the flange. With the invention grit is efficiently removed from the seal cavity with little possibility of damage to the shaft, the seals, the housing, or the rotating member. |
