Positive pressure protection device for laser processing laser head protection glass

The invention provides a laser processing laser head protective glass positive pressure protection device which comprises an outer sleeve, an inner sleeve, a GPL quick connector, a T-shaped tee joint, a straight-through type speed regulating valve and a PU air pipe, the laser head protective glass is fixedly connected with the outer sleeve of the device through screws, and the inner sleeve and the outer sleeve are fixedly connected through threads. The GPL quick-plug connector and the outer sleeve are fixedly connected through round threaded holes in the two sides of the outer sleeve, the GPL quick-plug connector, the T-shaped tee joint and the straight-through type speed regulating valve are connected through the PU air pipe, the straight-through type speed regulating valve is connected to the output end of a protective gas source through the PU air pipe, more uniform and powerful annular protective gas flow can be applied when the device works, gas consumption is reduced, and the service life of the device