1. High pressure pipeline filter (A)

 

Located on the outlet pipeline of the pump, it has the function of protecting pollutants from entering the system. Therefore, the concentration of pollutants in the system can be controlled. However, as it is a high-pressure main pipeline, it is subject to pump pulsation and pressure impact, so the material and strength of the filter element need to be carefully considered.

 

2. High pressure pipeline filter (B)

 

In the system, this filter, also known as a terminal filter, is installed to protect hydraulic components that are particularly sensitive to pollution. Therefore, it often has a smaller filtering granularity than other filters. Therefore, when using it, it is necessary to choose one with a larger capacity. In addition, the material and strength of the components should also be fully considered, just like (A).

 

3. Reflux filter

 

Located on the return oil pipeline of the system, its function is to capture pollutants generated or invaded in the system before returning to the oil tank. Therefore, it is an effective and important filter for controlling system pollution concentration. Although it is a low-pressure pipeline, pulsation or pressure shock may occur depending on the operating condition of the transmission device, so the material and strength of the components should be fully considered.

 

4. Oil suction filter

 

The filter is installed on the suction pipeline of the pump to filter out residual pollutants in the fuel tank and pollutants entering through the air hole, which has a protective effect on the pump. However, in order to avoid the phenomenon of cavitation in the pump, full attention must be paid to pressure loss. Generally, 100-200 mesh coarse metal mesh or recessed metal wire materials are used. Therefore, it is not a filter for controlling the pollution concentration of the system.

The above: Difficulties in the machining process of hydraulic vane pumps