Multi-point combined temperature control and temperature measurement heat treatment furnace

The utility model relates to a multi-point combined temperature control and temperature measurement heat treatment furnace which comprises a furnace pipe, an outer heating cover and a furnace sleeve, wherein the outer heating cover is movably sleeved outside the furnace pipe; the furnace sleeve is arranged in the furnace pipe; the furnace pipe is of a hollow sealed cylindrical structure; the outer heating cover is used for heating the side wall of the furnace pipe; the furnace sleeve is of a through cylindrical structure, and the furnace sleeve and the inner wall of the furnace pipe are arranged at an interval; a plurality of thermocouples for measuring and controlling temperature are distributed on the inner wall of the furnace sleeve at intervals; a circulating stirring fan is arranged at one end of the furnace pipe; a vacuumizing system is further mounted on the furnace pipe; and a PLC (Programmable Logic Controller) control electric cabinet is arranged on the furnace pipe. The temperature change of each p