There are various types of filters, which can be divided into the following categories according to their functions, application scenarios and working principles:
1. Oil suction filter
The filter is located on the suction pipe of the pump, which is mainly used to filter the residual pollutants in the tank and the pollutants entering through the air hole to protect the oil pump.
2. Return oil filter
This filter is located in the return oil line of the system, and its role is to capture the pollutants generated or invaded in the system before returning to the tank, thereby controlling the pollution concentration of the system.
3. High-pressure pipeline filter
It is divided into class A and Class B, Class A is located on the outlet pipe of the pump to protect pollutants from entering the system, and Class B is a terminal filter installed to protect hydraulic parts that are particularly sensitive to pollution.
4. Air filter
The filter is located on the oil tank and has the effect of preventing pollutants caused by changes in the oil tank amount from mixing with the air into the oil tank.
5. Return filter
The filter is located on the return pipeline of the system, which is mainly used to control the pollution concentration of the system. Although it is a low pressure pipeline, it also needs to have certain pressure resistance performance.
6. Circulation filter
Located on the oil return circuit of the tank cycle, it is suitable for situations requiring high cleanliness, and can trap pollutants in the tank even when the system is not working.
7. Mechanical filter
Removing impurities from water by physical means, usually made of porous materials, such as activated carbon, ceramics, etc., is widely used in the field of water treatment.
8. Activated carbon filter
The high adsorption performance of activated carbon is used to remove harmful substances such as organic matter, residual chlorine and heavy metals from water, which is usually used in domestic and industrial water treatment.
9. Reverse osmosis filter
Water is pushed through a semi-permeable membrane by applying pressure to remove almost all impurities and ions for desalination, industrial and domestic drinking water treatment.
10. Ultrafiltration filter
The use of ultrafiltration membrane to remove suspended matter, bacteria, viruses and most organic matter, etc., is widely used in industry and drinking water treatment.
11. Ion exchange filter
Ionic impurities are removed from water by ion exchanger, which is used in water softening, industrial water treatment and laboratory.