BSBK frame filter

About filter press dewatering filter is the use of a pump or compressed air, the solid, liquid slurry consisting of two phases, at a pressure difference, through the filter medium and achieve solid and liquid separation dehydration process. At present, domestic and foreign pressure filtration equipment used in coal preparation plant can be divided into two kinds of plate and frame filter presses and belt filter press. Coal filter press generally frame filter based. 1? Filter work? ???? Filter press dewatering is the use of a pump or compressed air, the solid, liquid slurry consisting of two phases, at a pressure difference, through the filter medium and achieve solid and liquid separation dehydration process. At present, domestic and foreign pressure filtration equipment used in coal preparation plant can be divided into two kinds of box-type filter presses and belt filter press. Coal filter press generally dominated chamber filter press. ??? Filter press for coal preparation plant Slime recovery, closed water circuit and have played an important role in environmental protection. Currently, the device has become an effective check slime water treatment equipment. 1.1? Filter work? ???? Filter works by using a pressure pump, coal slurry pressed into two adjacent sealed filter chamber filter plate formed so that a pressure difference on both sides of the cloth, thus solid-liquid separation. ? ???? Filter is generally part of the head plate, end plate, filter plate, hydraulic cylinders, the main beam, transmission and pull devices. Hydraulic cylinder piston driven head plate, so the pressing filter plate filter chamber is formed adjacent to the filter plate; coal slurry by a slurry pump into the filter chamber, the water is discharged through the discharge port through the cloth, solid pulverized coal in the filter chamber is formed cake. When the coal slurry filter chamber filled with high-pressure coal slurry pump continue to pressure filtration, solid-liquid separation in the filter chamber. ? 1.2? Filter workflow? ???? Filter structure is simple, reliable, adaptable, generally based on the following process work. ? ???? (1) pressing filter plate. Operation of the hydraulic system, so that moving the head transom board direction, the entire filter plates between the head board and the tail board compression. Thus, between adjacent filter plates constitute a hollow sealed filter chamber. ? ???? (2) pressure filtration process. Feed pump slurry transportation from feedholes transom to filter room, when the filter chamber filled with slurry, pressure filtration process begins, the slurry feed pump pressure by means of solid-liquid separation. ? ???? In the early pressure filtration, pulp in the filter cake thickness indoors little smaller cake resistance, dehydration speed, usually with the use of low head and large flow pumps. Cake thickness increases, resistance increases, pressure filtration rate decline, then use a small flow of high-lift pump. The time required for pressure filtration process, based on coal slurry filtration properties and process requirements to determine, when it reaches a predetermined pressure filtration time, stop feeding, pressure filtration process is complete. ????? (3) Release the filter plate. Hydraulic steering system, the head plate back to its original position. ?? (4) Plates discharge. Drive and pull the drive chain on the unit, have opened the filter plates, the filter cake by means of weight loss, the lower part of the conveyor away. ?