Coal seam gas drilling rig power head tap device
A drilling rig power head and power head technology, applied in the direction of rotary drilling rigs, earthwork drilling, drilling equipment, etc., can solve the problems of insufficient pressure in the mud system, affecting the service life of the power, accidents at the bottom of the hole, etc., to avoid mud leakage, Improve the service life and eliminate the effect of relative shaking
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[0011] A water tap device for a power head of a coalbed methane drilling rig, comprising a water joint 11 and a floating mandrel 2 of the power head, a positioning nut 1 is sheathed on the water inlet end of the floating mandrel 2 of the power head, and the positioning nut 1 is connected to the floating mandrel 2 of the power head The threads are connected, and a sealing connection mechanism is provided between the positioning nut 1 and the water joint 11. The sealing connection mechanism includes a centering support sleeve 3 fixedly connected with the positioning nut, and a water joint is provided inside the centering support sleeve 3. The core tube 7 fixedly connected, the inner cavity of the core tube 7 is respectively connected with the inner cavity of the floating mandrel of the power head and the water joint to form a water inlet channel, and the outer wall of the water inlet end of the core tube 7 and the centering support sleeve A centering mechanism is provided between...
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