Single-track driving electric gate valve

The utility model discloses a single-track driving electric gate valve, which comprises a valve seat, a valve body and an insert plate performing reciprocating movement between the vale seat and the valve body, wherein a torque motor is fixed on the valve body; the torque motor is in mechanical joint with and drives a gear; the gear is meshed with and drives a transmission tooth rack; and the transmission tooth rack is accommodated in a guiding groove arranged on the valve body, is connected with the insert plate and drives the insert plate to perform reciprocating movement along the guiding groove. The gate vale adopts the gear and the tooth rack for transmission, can be opened and closed quickly, and meets the requirement of a system for the opening and closing time of the gate valve; as the torque motor is adopted, the gate valve has fast response and strong overload capacity, and the motor can perform rotation stop as the motor has the self-protection function; and the equipment has the advantages of compact structure, light weight and small volume, and can be installed and maintained very conveniently.