Six types of filters and their main functions

- Aug 03, 2019-

Six types of filters and their main functions


High pressure pipeline filter (A) : set on the outlet pipeline of the pump to protect pollutants from entering the system. Therefore, the concentration of pollutants in the system can be controlled. However, because it is a high pressure main road, to be subject to pump pulsation and pressure impact, so the material of the filter element, the strength should be carefully considered.


1. Air filter: it is set on the oil tank to prevent pollutants from mixing with air due to the change of oil volume in the tank. Therefore, the filtration precision should have the same or more performance as the filter, and the capacity should have enough leeway to prevent the pressure in the oil tank from becoming negative pressure due to the hole blocking, causing the cavitation phenomenon of the pump. Be especially careful when your surroundings are hostile.


2. High pressure pipeline filter (A) : it is set on the outlet pipeline of the pump to protect pollutants from entering the system. Therefore, the concentration of pollutants in the system can be controlled. However, because it is a high pressure main road, to be subject to pump pulsation and pressure impact, so the material of the filter element, the strength should be carefully considered.


3, oil absorption filter: the filter is located in the suction pipe of the pump, filtering out the residual pollutants in the oil tank through the air hole into the pollutants, to protect the pump. However, in order to avoid cavitation in the pump, the pressure loss must be paid full attention to in the fusional filter element. Generally, 100-200 mesh or notched wire materials are used. Therefore, it is not a filter to control the pollution concentration of the system


4. Backflow filter: it is located on the return pipeline of the system. Its function is to capture pollutants generated or invaded in the system before returning to the fuel tank. Therefore, it is the most effective and important filter to control the pollution concentration of the system. Although it is a low-pressure pipeline, pulsation or pressure impact may occur according to the operation of the transmission device, so the material and strength of components should be fully considered.


5. High pressure pipeline filter (B) : this filter, also known as terminal filter, is installed in the system to protect hydraulic components that are particularly sensitive to pollution. As a result, it tends to be less granular than other filters. Therefore, the use of large capacity to choose. In addition, the material and strength of the components should also be fully considered as (A).


6, circulation filter: set on the oil return road of the tank cycle, the system capacity is large, so in the requirements of strict cleanliness is often used, even if the system is not working, can also catch the pollutants in the tank, therefore, the best efficiency to reduce the pollution concentration. In addition, a cooler is installed with the advantages of simultaneous cooling and easy maintenance. But need to use special pump and motor, cost is high.

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