Anti-blocking device for paraffin nozzle

The utility model discloses an anti-blocking device for a paraffin nozzle. The anti-blocking device comprises a paraffin storage tank, a paraffin nozzle; the three-way pipe fitting is provided with a first port, a second port and a third port; the transfer pump is connected with the paraffin storage tank through a feeding pipe and connected with a first port of the three-way pipe fitting through a discharging pipe; the feeding control valve is mounted on the discharging pipe and is used for controlling the opening and closing of the discharging pipe; the steam pipe is provided with a steam control valve and is connected with the second port of the three-way pipe fitting; and the paraffin spray head is connected with the third port of the three-way pipe fitting through a paraffin feeding pipe. The paraffin spraying head has the advantages of being capable of preventing the paraffin spraying head from being blocked after wax application is stopped and the like. 本实用新型公开了一种石蜡喷嘴防堵塞装置，包括石蜡储罐；石蜡喷头；三通管件，所述三通管件具有第一端口、