An axial adjustment device for a suspended vertical long axis semi submersible chemical sump pump

An axial adjustment device for a suspended vertical long shaft semi submersible chemical water collection pit pump, characterized in that a shaft sleeve is installed on the shaft, and the shaft and the shaft sleeve have a clearance fit. An angular contact ball bearing is installed on the shaft sleeve, and a locking nut is installed on the small diameter end of the shaft sleeve to axially position the angular contact ball bearing. The large diameter end of the shaft sleeve is provided with a bearing positioning step, and the angular contact ball bearing is positioned and installed inside the bearing positioning step. An adjustment nut is installed on the end face of the large diameter end of the shaft sleeve, and a locking nut is also installed on the adjustment nut. The adjustment nut and the locking nut are both installed on the shaft; This technology achieves bidirectional adjustment of axial clearance by adjusting the position of the adjusting nut on the shaft. After the adjustment is in place, the shaft sleeve, shaft, and adjusting nut are reliably locked with the help of screws, locking nuts, and stop washers. During the start-up, operation, or reverse rotation of the pump, the bearing positioning is reliable, and there is no relative axial movement between the shaft sleeve and the shaft.

Technical requirements: A suspended vertical long shaft semi submersible chemical sump pump rotor axial adjustment device, comprising a bearing bracket, a bearing body, a shaft passing through the bearing body, paired angular contact ball bearings, a stopper sleeve, a locking nut, and a skeleton oil seal arranged in the bearing body, a bearing cover installed on the bearing body, and a cover screw. The device is characterized in that the shaft is equipped with a shaft sleeve, and the shaft and the shaft sleeve are in a clearance fit. The angular contact ball bearing is installed on the shaft sleeve, and the locking nut is installed on the small diameter end of the shaft sleeve to axially position the angular contact ball bearing. The large diameter end of the shaft sleeve is provided with a bearing positioning step, and the angular contact ball bearing is positioned and installed in the bearing positioning step. The adjusting nut is installed on the end face of the large diameter end of the shaft sleeve. There is also a locking nut installed on the adjusting nut, and both the adjusting nut and the locking nut are installed on the shaft.