Special experiment rack for middle school chemistry classroom

The utility model belongs to the technical field of chemical experiment frames, and particularly relates to a special experiment frame for a middle school chemistry classroom, which comprises a base, a plurality of experiment frames and a plurality of experiment frames, the outer wall of the stand column is slidably sleeved with a sliding sleeve, one side edge of the sliding sleeve is in threaded connection with a screw, and the screw penetrates through the sliding sleeve and is connected with the outer wall of the stand column. A supporting ring with the angle adjusted through rotation is connected to the outer wall of the sliding sleeve, an elastic telescopic mechanism is arranged in the supporting ring, one end of the elastic telescopic mechanism is connected with the inner wall of the supporting ring, and the other end of the elastic telescopic mechanism is connected with a clamping plate. The supporting ring can be longitudinally adjusted on the stand column so as to be suitable for different installatio