Tubing drain
A technology of oil drainer and oil pipe, which is applied in the direction of wellbore/well parts, earthwork drilling, sealing/packing, etc., and can solve the problem that slips cannot be opened radially, connecting threads cannot be loosened, material costs and processing costs Advanced problems, to achieve the effect of low material cost and processing cost, easy processing and high operation success rate
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[0008] The embodiments of the present invention will be described below in conjunction with the drawings.
[0009] The embodiment of the present invention consists of a friction mechanism 1, an inner tube 3, a sealing sleeve 5, and a pin 6. The friction mechanism 1, the sealing sleeve 5 is sleeved outside the inner tube 3, the friction mechanism 1 is above the sealing sleeve 5, and the lower part of the inner tube 3 There is an oil drain hole 7, the lower part of the sealing sleeve 5 covers the lower oil hole 7 of the inner tube 3, the friction mechanism 1 has a convex key 2 at the lower end, and the sealing sleeve 5 has a convex key 4 at the upper end. The front end of the pin 6 is installed on the inner tube 3 to seal The sleeve 5 is provided with a vertical track groove 8 and a horizontal track groove 9, the vertical track groove 8 and the horizontal track groove 9 are communicated, the rear end of the pin 6 is in the horizontal track groove 9 on the sealing sleeve 5, and the p...
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