| 主权项 |
1. A blow gun comprising:
a body having a top path and a bottom path, an inlet communicating with a lower end of the bottom path, an outlet communicating with a top of the top path, a handle connected to the body and a space defined in the body, the space communicating with the top and bottom paths, the space having a first hole and a second hole which is smaller than the first hole so as to define a first stepped portion between the first and second hole, the top path communicating with the second hole and the bottom path communicating with the first hole; a volume adjustment device installed in the space and being in contact with a press rod which has one end pivotably connected to the body and being in contact with a lower end of the volume adjustment device, the volume adjustment device having a valve rod, a spring, a rotatable rod and a nut, the nut connected to a top of the space, a top of the valve rod connected to a first end of the spring, a second end of the spring being in contact with an underside of the nut the rotatable rod having a front end thereof extending through the nut and located in the spring, a distance being formed between the top of the valve rod and the front end of the rotatable rod, a knob connected to the rotatable rod and exposed beyond the nut, and a blowing pipe connected to the top path and having an exit. |
