Permanent type dust blowing gun

The utility model discloses a permanent type dust blowing gun. According to the technical scheme, the permanent type dust blowing gun is characterized in that the dust blowing gun comprises a gun body, a trigger, a valve rod and a valve base arranged at one end of the valve rod in a sleeving mode; the gun body comprises an air guiding channel, the valve base is connected in the air guiding channel in a sliding mode and stretches out of the gun body to abut against the trigger, the trigger is hinged to the outer side wall of the gun body, and the valve rod moves in the air guide channel through the valve base in the rotating process of the trigger; a sliding channel is internally connected with a sealing elastic ball in a sliding mode, and the sealing elastic ball can abut against an air inlet channel and an air outlet channel respectively in a sealed mode; the sealing elastic ball is connected with the valve rod in an abutted mode; the sliding channel is provided with an opening positioning groove and a closing positioning groove, and the sealing elastic ball is matched with the opening positioning groove and the closing positioning groove respectively; the gun body is further provided with a reset device, and the reset device is used for controlling the sealing elastic ball to reset and closing the air guide channel. By means of the permanent type dust blowing gun, the purpose that the continuous air injection can be kept without pressing the trigger with the hands all the time when working staff use the dust blowing gun to conduct cleaning is achieved, and the effect of conducting the dust blowing work for a long time is facilitated.