Rotary drilled hole sealing device for air drilling
A sealing device and rotary technology, which is applied in liquid/gas jet drilling, sealing/packing, earthwork drilling and production, etc. It can solve the problems of gap increase, sealing failure, and high return speed, and achieve good sealing effect , to avoid wear, reduce the effect of resistance
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[0015] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. It should be understood by those skilled in the art. The content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0016] The present invention proposes a rotary drilling orifice sealing device for air drilling, such as figure 1 and figure 2 As shown, it includes sealed semicircular slider 1, slider seat 2, clamping spring 3, spring pull rod 4, connecting core tube 5, fixing bolt 6, bearing gland 7, bearing seat 9, orifice connecting pipe 10, bearing 13 , sealing packing 16, rubber sealing sheet 18 and spring baffle 19, the quantity of described sealing semicircle slider 1 is two, and two sealing semicircle sliders 1 are symmetrically arranged on both sides of drill pipe 17, each sealing semicircle s...
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