Popular Science Knowledge--Filter Press made by Shenhongfa

A Filter Press is a type of pressurized Filter. Filters can be divided into three types according to the different filtering forces, namely gravity filter, vacuum filter and pressure filter.

The pressure filter is based on the pressure applied at the inlet of the suspension or the mechanical pressing force applied to the wet material as the driving force for filtration. It is suitable for use in suspensions that require a large filter pressure difference. It can also be divided into There are two kinds of intermittent operation and continuous operation.

Intermittently operated shell and tube Filter Presses and pressurized filters for filtration of low-concentration suspensions. The Filter press is also a pressurized filter with intermittent operation, which can be divided into three types: plate and frame type, box type and vertical type, and has a wide range of uses. The oil filter unit is a Plate And Frame Filter Press unit equipped with oil pumps, vacuum evaporators and other accessories.

Continuously operating drum pressure filter and disc pressure filter perform pressure filtration in a closed shell, and their structure is very similar to drum vacuum filter and disc vacuum filter. However, due to its complex structure, it is rarely used.

Commonly used pressure filtration is to use the volume of the filter chamber to decrease or apply mechanical pressure to filter. The moisture content of the filter residue is low, and it is suitable for high-concentration solid particle suspensions. In the Belt Press Filter, the wet filter residue after preliminary dehydration by gravity or vacuum moves between two filter belts, and then is deliquored by roller extrusion. The screw Press FIlter has a cylinder with holes, in which there is a rotating spiral, and the depth of the spiral groove is different. The material is fed from the deep groove end to the shallow groove end, the space of the filter chamber is gradually reduced, the material is squeezed, and the filtrate is discharged from the cylinder The pores are discharged, and the filter residue is discharged from the small end.

Using a filter machine does not require filter cloth and filter paper, which greatly reduces the cost of filtration. Its airtight and environment-friendly operation will not cause loss of materials. In addition, vibration slag removal also reduces labor intensity and realizes continuous operation. Pneumatic valve slag removal also reduces labor workload and labor intensity of workers. To sum up, these advantages and characteristics of the filter also determine that it is the leading equipment in the filtration industry.

Shenzhen Hongfa Environmental Protection Equipment Co., Ltd. has 20 years of experience in filter press production and research and development, and will serve you wholeheartedly!