To provide a highly convenient filter-plate-type filtration device capable of more effectively preventing leakage of a raw liquid to be filtrated and filtrate through a filter material. The filter-plate-type filtration device includes: a plurality of filter plates arranged with a filter material sandwiched therebetween; a filtration chamber formed between the plurality of filter plates; a raw liquid introduction path configured to introduce a raw liquid to be filtrated into the filtration chamber; a pressure sealing unit configured to apply a sealing pressure to the filter material such that leakage of the raw liquid to be filtrated and the filtrate from inside of the filtration chamber to outside of the filtration chamber is prevented; and a control unit configured to automatically control the sealing pressure in response to fluctuations in a pressure in the filtration chamber.

To provide a highly convenient filter-plate-type filtration device capable of more effectively preventing leakage of a raw liquid to be filtrated and filtrate through a filter material. The filter-plate-type filtration device includes: a plurality of filter plates arranged with a filter material sandwiched therebetween; a filtration chamber formed between the plurality of filter plates; a raw liquid introduction path configured to introduce a raw liquid to be filtrated into the filtration chamber; a pressure sealing unit configured to apply a sealing pressure to the filter material such that leakage of the raw liquid to be filtrated and the filtrate from inside of the filtration chamber to outside of the filtration chamber is prevented; and a control unit configured to automatically control the sealing pressure in response to fluctuations in a pressure in the filtration chamber.

A method of cleaning a filter cloth of a filter press including a first cleaning nozzle and a second cleaning nozzle which jet cleaning liquid from positions upper right and left of the filter cloth toward respective diagonal corners of the filter cloth, the method including: jetting the cleaning liquid from only the first cleaning nozzle; and jetting the cleaning liquid from only the second cleaning nozzle.

A method of cleaning a filter cloth of a filter press including a first cleaning nozzle and a second cleaning nozzle which jet cleaning liquid from positions upper right and left of the filter cloth toward respective diagonal corners of the filter cloth, the method including: jetting the cleaning liquid from only the first cleaning nozzle; and jetting the cleaning liquid from only the second cleaning nozzle.

A grid and a vat for a vat assembly of a vertical filter press such as a tower press is disclosed. The grid is provided with a topographical pattern engaging with a corresponding, inverse topographical pattern on the filtrate vat. The topographical patterns guide the filtrate flow towards a filtrate outlet and reduces the formation of vortices and turbulent flow of the filtrate, hence increasing the filtrate flow rate through the vat. Simultaneous, the topographical patterns improve secure attachment of the grid onto the vat, thereby allowing increased travel speed of the filter medium during advancement thereof. As a result, the cycle time of a filtration process may be reduced, and consequently, the overall capacity of the associated filter press is increased. A filtrate vat assembly and a vertical filter are also disclosed.

A grid and a vat for a vat assembly of a vertical filter press such as a tower press is disclosed. The grid is provided with a topographical pattern engaging with a corresponding, inverse topographical pattern on the filtrate vat. The topographical patterns guide the filtrate flow towards a filtrate outlet and reduces the formation of vortices and turbulent flow of the filtrate, hence increasing the filtrate flow rate through the vat. Simultaneous, the topographical patterns improve secure attachment of the grid onto the vat, thereby allowing increased travel speed of the filter medium during advancement thereof. As a result, the cycle time of a filtration process may be reduced, and consequently, the overall capacity of the associated filter press is increased. A filtrate vat assembly and a vertical filter are also disclosed.