PURPOSE: To simplify the solid-liquid separation device for a squeeze dehydration press of the liquid containing sludge, machine oil, other sludges and the squeeze dehydration device for squeeze dehydration treatment of garbage, etc., and a simple juicer, etc.

CONSTITUTION: The solid-liquid separation device is provided with a raw material charging port 2 on an upper face 111, a horizontally placed casing tube 1 having an opening port 112 at pressure receiving face side, a liquid taking out part (many through holes 3) pierced to the upper face of casing tube 1, a piston 6 integrated in the casing tube free to reciprocate, a cylinder 7 to move forward/backward the piston and a pressure receiving plate 4 arranged at the pressure receiving face side of casing tube 1 and to open/close the opening port 112. By this method, taking out of squeeze cake is simply and surely is executed and good quality clean water, juice, etc., are produced.