1, the filter accuracy should meet the predetermined requirements. In a long time to maintain adequate flow of energy;
2, the filter has enough strength, not because of the role of hydraulic damage;
3, filter corrosion resistance, and can work at a specified temperature for a long time. Filter cleaning or replacement is simple.
Installation of the feed water pump filter in the hydraulic system installation location are usually the following:
1, to be installed in the suction port of the feed pump:
Pump oil suction circuit is generally installed with a surface type oil filter, the purpose is to filter out the larger impurity particles to protect the hydraulic pump, in addition to the filter capacity of the filter should be more than twice the pump flow, the pressure loss is less than 0.02MPa.
2, installed in the outlet pump on the road:
The purpose of the oil filter installed here is to filter out contaminants that may penetrate valves and other components. Its filtration accuracy should be 10 ~ 15μm, and can withstand the working pressure on the oil and the impact pressure, the pressure drop should be less than 0.35MPa. At the same time should be installed safety valve to prevent the filter plug.
3, installed in the return pump on the water supply system:
This installation of indirect filtering effect, generally with the filter and even install a back pressure valve, when the filter block to a certain pressure value, the back pressure valve open. Installed on the system branch oil. Separate filtration system: large hydraulic system can be set up a hydraulic pump and oil filter composed of independent filter circuit. In addition to the entire system required for the oil system, but also often in some important components (such as servo valves, precision throttle valve, etc.) in front of a separate installation of a dedicated fine filter to ensure their normal work.click here
Feed water pump filter installation, switch valve - filter - bellows / soft connector - feed pump. The pump inlet is installed directly, and the diffusion filter has the function of filtering impurities. It also has stable water flow, prevents cavitation, improves pump efficiency, saves pump inlet diversion tube, and can greatly reduce installation space.
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