Thermocouple mounting seat for vacuum heat treatment furnace

The invention discloses a thermocouple mounting seat for a vacuum heat treatment furnace. The thermocouple mounting seat comprises a mounting seat body (2), a sealing pad (3) and a cap nut (4), and is characterized in that the mounting seat body (2) is axially provided with an inner cavity, the inner cavity comprises a front-section small-diameter hole (8) and a rear-section large-diameter hole (10), a taper hole (9) is arranged between the small-diameter hole (8) and the large-diameter hole (10) in a connected manner, a guide sleeve (1) is fixed to the front end of the mounting seat body (2), the sealing pad (3) and a pressing sleeve (5) are sequentially arranged in the large-diameter hole (10) in the rear end of the inner cavity, the pressing sleeve (5) is in contact with the outer end surface of the sealing pad (3), the cap nut (4) is arranged on the other side of the pressing sleeve (5) and is connected to the outer side end of the mounting seat body (2), and the mounting seat body (2) is connected with the pressing sleeve (5) in an untwisted manner. The thermocouple mounting seat has the advantages of convenience in loading and unloading, reliability in sealing, economical efficiency and safety.