Exhaust port control device of vacuum pump oil tank

The utility model discloses an exhaust port control device of a vacuum pump oil tank, which is provided with a tank body, an oil-water separator and a drainage piece, oil vapor and water vapor in the vacuum pump oil tank enter the tank body from an exhaust port, oil and water are stored in the tank body, gas is discharged outdoors after being filtered by the oil-water separator, and no oil and water are deposited in the vacuum pump oil tank. By adopting the built-in oil-water separator, the oil-water separator which is originally arranged in the oil tank of the vacuum pump can be removed, the contact between the oil-water separator and oil and water is reduced after the oil-water separator is removed, the service life of the oil-water separator is prolonged, the maintenance period of the oil-water separator is shortened, and the technical scheme can ensure that steam is better discharged into the vacuum pump; meanwhile, water vapor cannot flow back into the vacuum pump, the oil-water separator is convenient t