Constant-temperature water-oil groove with inner shell convenient to replace

The utility model provides a constant-temperature water-oil groove with an inner shell convenient to replace, which comprises a shell, a liftable water-oil groove body is arranged in the shell, the top of the shell is provided with a taking-out groove larger than the size of the water-oil groove body, and the water-oil groove body can vertically pass through the inside of the taking-out groove; an inner shell is detachably connected in the water-oil tank body, and an experimental product can be placed in the inner shell. Through the arrangement of the water-oil groove body, the inner shell, the motor, the screw rod, the threaded block, the vertical rod, the sliding block, the taking-out groove and the door plate, the position of the inner shell can be adjusted, and experimental products placed in the inner shell can be taken out conveniently after the inner shell is lifted; and through mutual cooperation of parts among the mounting base, the limiting groove, the fixed box, the stud, the operation block, the m