Hydraulic oil tank of hydraulic drive diaphragm type compressor

The utility model discloses a hydraulic oil tank of a hydraulic drive diaphragm type compressor, and belongs to the technical field of hydraulic oil tanks. Comprising an oil tank top cover and an oil tank body, and the oil tank top cover is of a cover body structure and covers the top of the oil tank body; a temperature sensor, a breather valve, a liquid level switch and an electric heater are mounted on the oil tank top cover; the heating end of the electric heater extends into the oil tank body and makes contact with oil. A liquid level meter used for measuring the position of oil is arranged on the oil tank body. By improving the structure of the oil tank top cover, the oil tank top cover is designed into a cover structure which directly covers the oil tank main body, and the way that rainwater enters the oil tank is completely blocked, so that the waterproof IP level of the whole hydraulic oil tank is improved, and the situation that safe operation of a compressor is harmed due to mixing of oil and water