The history of filter press development and cleaning methods after use

This type of Filter pressees was first used in the chemical industry in the 18th century and is still widely used today in the chemical, pharmaceutical, metallurgical, dye, food, brewing, ceramic and environmental industries. The pressure Filter Press Machine consists of multiple Filter Plate that are stacked to form a filter room and includes a filter frame that uses pressure as the driving force. Filter Presses are intermittent in operation and are divided into three different types, including Plate And Frame Filter Press, Chamber Filter Press and vertical Filter press . Filter plates offer stable performance, easy operation, and safety and labor saving. Filter plates made of metal and plastic are made by casting or molding and have the characteristics of resistance to high temperature, high pressure and long-lasting durability.

How do we usually clean the filter press after using it? Let's learn more about it: When performing filter cake cleaning, sometimes it is necessary to perform clear flow one-way/bidirectional washing, or dark flow one-way/bidirectional washing. Clear flow one-way washing means that the washing liquid enters from the washing liquid inlet holes on the thrust plate in sequence, passes through the filter cloth, the filter cake, and then flows out from the non-porous filter plate. During this process, the liquid flows out of the nozzles on the orifice plate and closes. The exit nozzles without holes are open.

The dark flow unidirectional flow of the filter press is that the washing liquid enters the porous plate from the washing liquid inlet hole of the stopper plate, passes through the filter cloth then through the filter cake, and flows out from the non-porous Filter plate. Undercurrent bi-directional cleaning is from the two washing liquid inlet holes on both sides above the cleaning plate to clean the washing liquid twice, that is, first from one side of the washing liquid, and then from the other side of the washing liquid, the outlet of the washing liquid is diagonally oriented. Therefore, it is also known as dark current bidirectional cross washing.

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