Comparison of filter press and filter

Sometimes, filter presses are classified as filters, because there are too many similarities between them, but there are also different places. Compared to filters, filter press equipment is used more widely in industrial production and is used more in a variety of industries.

Same point

The biggest difference between the filter and the van filter press is that they have the same principle of filtration separation. They also use the dialysis barrier of the filter media (in most cases filter cloth). They are designed by special mechanical equipment to introduce the mixed liquid into the equipment. In contact with the filter medium, a pressure difference is formed on both sides of the medium, which provides a physical power source for the liquid to permeate the filter medium. The filter medium can only let liquid and tiny solid particles pass, so the solid is intercepted by the filter cloth on the filter cloth, thus achieving the solid-liquid separation effect.

difference

Design structure

In many industries where filter presses are used, the water content of the filter cake is clearly limited, which results in a large difference in the design structure between the filter and the filter press. In order to reduce the filter cake moisture of the filter press, the structure of the filter press ensures the relative isolation of the filter cloth, and the filter cake is subjected to secondary drying and pressing processes. Therefore, the filter chamber of the horizontal filter press has a large number of filter plates, and the diaphragm filter press has a blow dryer.

Filtration efficiency

The filter press has a higher filtration efficiency than a filter. The unique design of the filter press in the filter chamber results in more contact between the filter media and the filter, ie the effective filtration area is larger than the filtration. In addition, the filter press has a large external force on the filter, and the filter press increases the filter by 2 MPa, and when pressed, it can reach 25 MPa. These two points make the filter press more efficient.

Filter cake moisture

Compared to the filter, the filter cake of the filter press has 50% less moisture.

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