After the oil tank runs out of oil, the air can't be discharged from the oil circuit after filling, and the oil in the oil-water separator is always dissatisfied with the pump. It's not just a reason, please advise and thank you.

first, you don't have to refuel. In fact, the oil mist oiler is not only for the mechanical valve, but also for the cylinder behind it.

1. The one on the left is the oil-water separator+pressure regulating valve, which needs no refueling.

2. On the right is the oil mist sprayer, which needs to be refueled. There is a mark on the fuel quantity cup. The regulating valve on it is used to adjust the fuel quantity, and its main function is to lubricate the moving parts in the pneumatic control system. The lubricating oil can refer to SMC requirements: Turbine Oil No.1 (ISO VG32)

2. Oil-water separators are generally used in diesel vehicles, which are installed near the fuel tank to separate the water in diesel oil. The diesel oil comes out of the oil tank, passes through the oil-water separator, then goes to the diesel oil filter, and then enters the diesel oil pump and the high-pressure oil pump.

Extended information:

1. Oil-water separator:

1. Oil-water separator is a device, which can be divided into catering oil-water separator and industrial oil-water separator. Catering oil-water separator is used to treat sewage in catering industry; Because of the requirements of environmental protection, the sewage discharged to the ship machinery in rivers, lakes and seas must be treated, and an industrial oil-water separator is needed.

2. compressed air oil-water separator, which is used to separate condensed impurities such as water and oil in compressed air, so that the compressed air can be preliminarily purified. Generally, the pressure is 1.1Mpa- 2.5Mpa.

3. When compressed air enters the oil-water separator, the flow direction and speed change sharply, and then the oil droplets and water droplets with higher density than compressed air are separated by inertia. The common ones are impact oil-water separator and annular rotary oil-water separator.

4. after the compressed air enters the oil-water separator shell from the inlet, the air flow is blocked by the baffle and then bounces back down, and then rises up again, resulting in annular rotation. In this way, water droplets and oil droplets are separated from the air and settled at the bottom of the shell under the action of centrifugal force and inertial force.

Reference: Baidu Encyclopedia-Oil-Water Separator