Coating equipment containing liquid supply system

The utility model discloses coating equipment containing a liquid supply system, which comprises a supply system and a vacuum evaporator, the supply system comprises a liquid storage bottle, the liquid storage bottle is used for storing liquid raw materials, the interior of the liquid storage bottle is sealed, the top of the liquid storage bottle is provided with an air inlet pipe and a liquid outlet pipe, the air inlet pipe is connected with a high-pressure air source, and the liquid outlet pipe is connected with a liquid outlet pipe; the air inlet pipe is higher than the liquid level of the liquid raw material; the liquid outlet pipe is submerged at the bottom of the liquid raw material; the first valve is connected with the liquid outlet pipe through a conveying pipeline; the filter is connected with the first valve through a conveying pipeline; the liquid mass flow meter is connected with the filter through a conveying pipeline; the gas-liquid separator is connected with the liquid mass flow meter through