초록 ▼

A shaft seal is interposed between a tank and a rotating shaft extending through the tank and having a non-rotatable stator fixed to the tank and a rotor fixed for rotation to the shaft. A multiple labyrinth structure is formed between the rotor and the stator for preventing the ingress of contamina

A shaft seal is interposed between a tank and a rotating shaft extending through the tank and having a non-rotatable stator fixed to the tank and a rotor fixed for rotation to the shaft. A multiple labyrinth structure is formed between the rotor and the stator for preventing the ingress of contaminants from the tank and the egress of lubricant from the shaft. A self-aligning arrangement is constructed and arranged to permit the stator to shift axially along the shaft and compensate for various forces inflicted on the shaft as the shaft rotates.

대표청구항 ▼

[ We claim:] [1.] In a shaft seal interposed between a tank and a rotary shaft extending through the tank, and having a non-rotatable stator fixed to the tank and a rotor fixed for rotation to the shaft, the improvement comprising:a multiple labyrinth structure formed between the rotor and the stato

[ We claim:] [1.] In a shaft seal interposed between a tank and a rotary shaft extending through the tank, and having a non-rotatable stator fixed to the tank and a rotor fixed for rotation to the shaft, the improvement comprising:a multiple labyrinth structure formed between the rotor and the stator for preventing the ingress of contaminants from the tank and the egress of lubricant to the shaft; anda self-aligning arrangement constructed and arranged to permit the stator to shift axially along the shaft and compensate for various forces inflicted on the shaft as the shaft rotates;wherein the multiple labyrinth structure includes a pair of baffles oriented at substantially 90.degree. to each other;wherein the rotor is formed with an axially extending recess receiving one of the baffles, and a radially extending groove receiving the other of the baffles;wherein the tank includes an end wall and a liner connected thereto; wherein the one of the baffles is defined by an axially extending flange formed on the stator; andwherein the other of the baffles is formed by the liner.