Liquid filter, and a liquid filtration apparatus using the liquid filter

A liquid filter comprising:

• a filter body comprising a filter paper through which a liquid is allowed to pass from an inner face to an outer face, and
• a plurality of spacers fixed to the filter body,
• the filter body further comprising:
• a liquid inflow space defined at a center of the filter body having corner parts, the liquid inflow space having four sides connected to one another at four corners, and inlet ports defined at each corner so as to define a near-cuboidal shape of the liquid inflow space,
• mountain fold parts individually exposed to an outside of a front face and a back face, as well as of a left side face and a right side face, individually having a length in the direction orthogonal to a height direction, and juxtaposed in the height direction;
• valley fold parts individually formed between adjacent ones of the mountain fold parts, partially contributing to form the liquid inflow space, and having each of the valley fold parts having a length equal to or shorter than a length of the mountain fold parts;
• diagonal fold parts individually formed outwards from the corners of the liquid inflow space, and having a length in a radial direction around a center of the liquid inflow space;
• and
• pocket parts, each pocket part having a respective one of the diagonal fold parts on one side, and having a triangular planar shape,
• each spacer being fixed on the inner face of the filter paper, near a respective one of the diagonal fold parts, and inside of each of the pocket parts.