Rotary seal chuck of optical fiber preform rod deposition lathe

A rotary seal chuck of an optical fiber preform rod deposition lathe, comprising:

• a fixing seating;
• and
• a rotation shaft,
• wherein the fixing seating is provided with a center hole seat, wherein the center hole seat supports the rotation shaft through a bearing, and one end of the center hole seat is connected to an air pipe;
• wherein the rotation shaft comprises a hollow rotation shaft provided with a through hole, wherein one end of the through hole is communicated with the air pipe, and the other end of the through hole is provided with a liner pipe seal connection hole seat;
• wherein a magnetic fluid sealing ring is disposed at the junction of the inner side of the rotation shaft and the center hole seat of the fixing seating so as to form rotation dynamic seal, and the outside of the rotation shaft is connected to a rotation driving disc;
• and
• wherein an end cover is disposed at the outer end of the rotation shaft, a rubber seal ring is disposed between the inner side of the end cover and a port of the through hole so as to form the liner pipe seal connection hole seat.

A rotary seal chuck of an optical fiber preform rod deposition lathe, comprising:

• a fixing seating;
• and
• a rotation shaft,
• wherein the fixing seating is provided with a center hole seat, wherein the center hole seat supports the rotation shaft through a bearing, and one end of the center hole seat is connected to an air pipe;
• wherein the rotation shaft comprises a hollow rotation shaft provided with a through hole, wherein one end of the through hole is communicated with the air pipe, and the other end of the through hole is provided with a liner pipe seal connection hole seat;
• wherein a magnetic fluid sealing ring is disposed at the junction of the inner side of the rotation shaft and the center hole seat of the fixing seating so as to form rotation dynamic seal, and the outside of the rotation shaft is connected to a rotation driving disc;
• wherein the bearing is a rolling bearing, and two rolling bearings are disposed in the center hole seat in parallel at an interval in the front and back respectively;
• and
• wherein an end cover is disposed at the outer end of the rotation shaft, a rubber seal ring is disposed between the inner side of the end cover and a port of the through hole so as to form the liner pipe seal connection hole seat.