Test instrument for liquid-solid extraction separation

The invention relates to the technical field of liquid-solid extraction separation, and discloses a test instrument for liquid-solid extraction separation. The test instrument comprises a base and a rotating assembly, the inner wall of the top of the base is movably connected with the outer wall of the bottom of the rotating assembly, and the outer wall of the rotating assembly is movably connected with a limiting pipe. According to the test instrument for liquid-solid extraction separation, in the rotating process of the outer pipe, the reciprocating assembly also rotates along with the outer pipe, under the action of a limiting block, a connecting plate moves towards the opposite side, so that the limiting force of the connecting plate on the filter screen disappears, at the moment, a fixing plate moves under the action of an elastic rope, and a connecting column and a connector also move under the action of the elastic rope and generate pulling force on the filter screen; and when the pressed plate moves to the tail end of the limiting block, the pressed plate rebounds under the action of the constant-pressure rod, so that the connecting plate can generate explosive pulling force on the filter screen, solid substances on the surface of the filter screen are separated, and the effect of preventing the solid separation efficiency from being reduced due to accumulation of the solid substances is achieved.