Experimental caffeine sublimating device

The utility model relates to the field of experimental devices and provides an experimental caffeine sublimating device. The experimental caffeine sublimating device comprises a temperature probe (1), a funnel (2), a beaker (3), porous filter paper (4) and a digital display electric heating sleeve (5), wherein the beaker (3) is cylindrical; the funnel (3) comprises a funnel body (21) and a funnel neck (22); the funnel body (21) comprises a cylindrical funnel body part (211) and a conical funnel body part (212); the inner diameter of the cylindrical funnel body part (211) corresponds to the outer diameter of a beaker opening (31); a pipe hole of the temperature probe (1) is formed in the middle of the porous filter paper (4). The experimental caffeine sublimating device has the advantages that the temperature of a raw material can be directly measured to be controlled directly, the crystallization phenomenon is easy to observe, the crystal collection rate is high, and each student can collect the crystal in th