Energy-saving inverted bucket type drain valve

The invention discloses an energy-saving inverted bucket type drain valve which comprises a valve body. The valve body is provided with a gas-liquid separation cavity, a steam inlet channel and a liquid outlet channel, the bottom of the liquid outlet channel is provided with a rotating arm, the rotating arm is rotationally connected with an inverted bucket, the inverted bucket covers the steam inlet channel, and a thermosensitive bimetallic strip is arranged in the valve body. The thermosensitive bimetallic strip extends to the position between the liquid outlet channel and the rotating arm, avalve element used for blocking the liquid outlet channel is arranged on the thermosensitive bimetallic strip, and the thermosensitive bimetallic strip is heated, cooled and deformed so that the valve element can block or open the liquid outlet channel. The rotating arm ascends and descends to push the valve element to block or open the liquid outlet channel. According to the energy-saving inverted bucket type drain valv