High-temperature-resistant vacuum butterfly valve device

The high-temperature-resistant vacuum butterfly valve device comprises a water-cooling magnetic fluid sealing device, a valve body, a valve plate and a motor, the water-cooling magnetic fluid sealing device is provided with a rotating shaft, one end of the rotating shaft is in transmission connection with the motor, the other end of the rotating shaft is fixedly connected with the valve plate, and the valve plate is arranged in the valve body; and the valve body and the motor are fixedly connected with the water-cooling magnetic fluid sealing device. The high-temperature-resistant vacuum butterfly valve device has the beneficial effects that the water-cooling magnetic fluid sealing device is adopted for vacuum sealing of the butterfly valve, the water-cooling magnetic fluid sealing device is not affected by high-temperature gas in a vacuum cavity, the butterfly valve can be stably sealed for a long time, the sealing performance is reliable and stable, gas leakage is not prone to occurring, and the service lif