In the hydraulic system auxiliary component, to prevent the theft from entering the fuel tank
Can't, hydraulic system, the hydraulic oil flow is very large, sealed tank can not balance inside and outside the tank pressure, will cause the hydraulic tank by vacuum absorption at work, unable to meet the needs of oil hydraulic system, and email may be crushed in the pressure of the atmosphere. You can install the tank cover with breathing and splash system.
The fuel tank is connected to the air in accordance with the tank level, which is divided into the open tank and closed tank. The oil in the open tank is connected to the atmosphere, which is the most widely used fuel tank, and is used in fixed equipment.
The oil in the closed tank is not connected to the atmosphere. It is divided into two types. Isolation tank type usually with folding or flexible isolation, and it can make the air outside the contractions not contact with the liquid level within the tank, but guarantee on the surface of the fluid pressure to atmospheric pressure, to avoid the dust in the air to mix the oil, the fuel tank is suitable for the occasion of dust pollution is severe; An inflatable fuel tank is also called a pressure tank, which is completely enclosed in a tank, which compresses the air and puts pressure above the outside pressure. The closed tank is mostly used for walking equipment and vehicles. In general, the tank can't form negative pressure, or how can the pump pump oil out of the tank?
