The invention relates to a
water cooling device of
vacuum evaporation equipment for an
optical filter. A rotating shaft is connected to a mounting and fixing plate in a penetrating manner. One end of the rotating shaft is driven by a motor and is connected with the motor, and the other end of the rotating shaft is fixed together with the bottom end of a
water cooling coil. An inner cavity of the
water cooling coil is partitioned into an upper cavity layer and a lower cavity layer by a partition plate, and the upper cavity layer is communicated with the lower cavity layer. A water outlet
pipe is connected to the inner cavity of the rotating shaft in an inserting manner. One end of the water outlet
pipe extends into the upper cavity layer of the water
cooling coil and is communicated with the upper cavity layer while the other end of the water outlet
pipe is communicated to a water outlet of the water outlet pipe. The rotating shaft is sleeved by a water inlet pipe. One end of the water inlet pipe is communicated with the lower cavity layer of the water
cooling coil and the other end of the water inlet pipe is communicated to a water inlet of the water inlet pipe. According to the water cooling device, the rotating shaft is internally provided with the water outlet pipe, the outside of the rotating shaft is sleeved by the water inlet pipe, one end of the water outlet pipe is communicated with the upper cavity layer, and one end of the water inlet pipe is communicated with the lower cavity layer, so that high temperature generated because an
electrode bar works for a long term is effectively relieved, the service life of the
electrode bar is prolonged, and furthermore the work efficiency is increased.