Drill bit with dry internal drillings discharge
A drill bit and dry-type technology, which is applied in the direction of drill bits, drill pipes, drill pipes, etc., can solve the problems of inability to dry dust discharge, low powder discharge efficiency, and inconvenient replacement, so as to achieve convenient and quick disassembly and replacement of the top cover Convenience, cost-saving effect
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[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0028] see Figure 1-6 As shown, a dry-type internal powder discharge drill bit includes a drill bit 1, a cutting edge 3, a drill rod 6 and a through hole 2. The drill bit 1 is externally connected with several helical cutting edges 3, and the drill bit 1 is externally connected to several cutting edges 3. Several through holes 2 are arranged between them. When the drill bit 1 rotates, the cutting edge 3 can increase the working efficiency of the drill bit 1. Dust can enter the drill bit 1 and the drill pipe 6 through the t...
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