The invention discloses a flexible tube presser for discharging a mud cake by using a multi-layer water permeable plate through an
extrusion method. A
filter element of the flexible tube presser comprises an upper
flange, a filter tube unit, a filter chamber forward and backward limiting structure, a filter chamber leftward and rightward limiting mechanism, a horizontal filtrate collection tray and a mechanical
slag removal
assembly, wherein the upper
flange comprises a filter chamber upper sealing structure and a traveling mechanism; guide wheels of the traveling mechanism are arranged on the left side and the right side of the upper
flange and are engaged with a stand guide rail respectively; in the machinery, the mud cake is discharged by using the
extrusion method; at least one water permeable plate and a collection tube are arranged in a filter chamber; each water permeable plate comprises at least three
layers of plate-shaped filter mediums, a plate locking strip, a suspension
assembly, a filter cloth tightening mechanism, an edge covering corner strip, a
water discharge conduit port and a fluid inlet orifice; and a treatment process is automatically finished by the water permeable plate due to the small size, simple structure,
high pressure resistance, light weight, reliable sealing, large water absorption area, long life, high filtering speed, high efficiency, large treatment scale and low running cost of the water permeable plate.