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Oil filter is a series of coarse filter pipe can also be used for gas or other media large particles filter, installed in the pipeline can remove the fluid in the larger solid impurities, so that machinery and equipment (including compressors, pumps, etc.), the instrument can be normal Work and operation, to achieve a stable process to ensure the safety of production. Basket filter The main filter material is stainless steel perforated plate, stainless steel braid and stainless steel sintered mesh. The oil filter can be customized according to the specific requirements of customers (special pressure, special caliber). Basket filter with a large amount of pollutants, high pressure, easy installation and cleaning advantages.
When choosing an oil filter, consider the following:
(1) filter accuracy should meet the required requirements.
(2) can maintain a sufficient flow capacity for a long time.
(3) filter has enough strength, not because of the role of hydraulic damage.
(4) filter corrosion resistance, and can work at a specified temperature for a long time.
(5) filter cleaning or easy to replace.
Therefore, the oil filter should be based on the hydraulic system technical requirements, according to the filter accuracy, flow capacity, working pressure, oil viscosity, working temperature and other conditions selected its model.
2. Install the oil filter in the hydraulic system installation location usually have the following:
(1) to be installed in the suction port of the 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 pump outlet oil:
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 system on the oil return: this installation from the 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.
(4) installed in the system branch oil.
(5) separate filtration system: large hydraulic system can be dedicated to 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.