The invention relates to a method for filtering a suspension in a filter device comprising a sequence of steps, including piping the suspension into the filter chamber between the filter cloths, directing the suspension through the filter cloths, discharging a liquid fraction of the suspension through the first duct and the second duct out of the filter chamber and through the first outlet of the first recess plate and the second outlet of the second recess plate as a filtrate, and piping a drying gas from the head piece into the filter chamber through the first duct and discharging the same through the second duct. The invention further relates to such a recess plate that is designed for packing a plurality of specimens of the recess plate into a pack between a stationary head piece and a moveable end piece of a filter device.

The invention relates to a method for filtering a suspension in a filter device comprising a sequence of steps, including piping the suspension into the filter chamber between the filter cloths, directing the suspension through the filter cloths, discharging a liquid fraction of the suspension through the first duct and the second duct out of the filter chamber and through the first outlet of the first recess plate and the second outlet of the second recess plate as a filtrate, and piping a drying gas from the head piece into the filter chamber through the first duct and discharging the same through the second duct. The invention further relates to such a recess plate that is designed for packing a plurality of specimens of the recess plate into a pack between a stationary head piece and a moveable end piece of a filter device.

A horizontal filter press is disclosed. The horizontal filter press comprises a support bracket, a head bracket, two sidebars spanning a distance between said support bracket and said head bracket, and a plurality of double filter plates. Each double filter plate comprises a first individual filter plate having a first filter chamber, one or more first filtrate ports, at least one first feed eye port, and at least one first handle; and a second individual filter plate having a second filter chamber, one or more second filtrate ports, at least one second feed eye port, and at least one second handle. The first and second individual filter plates are initially separate components, but are subsequently mechanically joined together to form said at least one double filter plate. In some embodiments a spacer bar is provided between the first and second individual filter plates. In some embodiments, a cutout is provided between the first and second individual filter plates to accommodate a support beam centrally disposed between said sidebars, the support beam providing additional support to the plurality of double filter plates. Methods of manufacturing a double filter plate are also disclosed.

A horizontal filter press is disclosed. The horizontal filter press comprises a support bracket, a head bracket, two sidebars spanning a distance between said support bracket and said head bracket, and a plurality of double filter plates. Each double filter plate comprises a first individual filter plate having a first filter chamber, one or more first filtrate ports, at least one first feed eye port, and at least one first handle; and a second individual filter plate having a second filter chamber, one or more second filtrate ports, at least one second feed eye port, and at least one second handle. The first and second individual filter plates are initially separate components, but are subsequently mechanically joined together to form said at least one double filter plate. In some embodiments a spacer bar is provided between the first and second individual filter plates. In some embodiments, a cutout is provided between the first and second individual filter plates to accommodate a support beam centrally disposed between said sidebars, the support beam providing additional support to the plurality of double filter plates. Methods of manufacturing a double filter plate are also disclosed.

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 pressure filter dewatering system and a method, which includes a pressure filter, an extrusion dewatering assembly, and a negative pressure dewatering assembly. The pressure filter includes a plurality of filter plates and filter cloth; a first chamber used for accommodating a solid medium to form a filter cake can be formed between adjacent filter plates; a liquid inlet hole allowing suspension liquid to enter the first chamber and a liquid outlet hole allowing filtrate to flow out of the first chamber are formed in each filter plate; each filter plate includes a core plate and two membranes respectively located on two sides of the core plate; a second chamber is formed between the core plate and each membrane; and a first channel and a second channel which communicate with the second chambers are arranged inside the core plate.

A pressure filter dewatering system and a method, which includes a pressure filter, an extrusion dewatering assembly, and a negative pressure dewatering assembly. The pressure filter includes a plurality of filter plates and filter cloth; a first chamber used for accommodating a solid medium to form a filter cake can be formed between adjacent filter plates; a liquid inlet hole allowing suspension liquid to enter the first chamber and a liquid outlet hole allowing filtrate to flow out of the first chamber are formed in each filter plate; each filter plate includes a core plate and two membranes respectively located on two sides of the core plate; a second chamber is formed between the core plate and each membrane; and a first channel and a second channel which communicate with the second chambers are arranged inside the core plate.

A high-efficiency filter press includes a filter plate for solid-liquid separation, a material pool for storing materials and transporting the materials to the filter plate, and a filtrate pool for storing filtrate flowing out of the filter plate, wherein the filter plate is provided with a feed hole, a first drain hole and a second drain hole, the material pool is in communication with the feed hole through a feed pipe, the first drain hole is in communication with the filtrate pool through a first drain pipe, the second drain hole is in communication with the filtrate pool through a second drain pipe. The filter press further includes a washing device which is configured to inject washing water into the first drain hole to allow the washing water to flow out from the second drain hole into the filtrate pool after flowing through the filter plate.

The present disclosure provides an urban river channel direct purification device. The device includes a support wall panel arranged vertically, an upper tray and a lower tray arranged horizontally, an upper end of the support wall panel is connected with the upper tray, a lower end of the support wall panel is connected with the lower tray, the upper tray and the lower tray are respectively semi-circular, several filler biological walls are disposed between the upper tray and the lower tray, a top end of each filler biological wall is fixedly connected with the bottom of the upper tray, a bottom end of each filler biological wall is fixedly connected with the lower tray, and the filler biological wall is arranged along a radial direction of the upper tray/lower tray. The device can purify the water of the river channel through the adsorption material in the device.

A filter plate assembly for a filter press is provided. The filter plate assembly includes at least a first filter plate and a second filter plate, which cooperate to define a filter chamber when the first filter plate and the second filter plate are in a filtering position. At least one of the first filter plate and the second filter plate is movable from the filtering position to a discharge position in which a filter cake can be discharged. In other configurations, the filter plate assembly can include a first filter plate, a second filter plate and a center filter plate or frame, which cooperate to define a filter chamber. The center filter plate or frame is movable from a filtering position to a discharge position.