Rotary type tubing drain and use method thereof
A technology of oil drainer and rotary type, which is applied in the field of oil drainer, can solve the problems of complex unlocking structure of the oil drainer, and achieve the effects of wide application range, convenient use, and cost reduction
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[0021] The specific embodiment of the rotary oil pipe drainer of the present invention is as figure 1 As shown, the oil pipe oil drainer includes an oil drain pipe 1, an oil drain sleeve 6 and a lower joint 11 arranged sequentially from top to bottom. An external thread is provided on the surface, and an internal thread is correspondingly provided in the oil drain sleeve 6, and the oil drain pipe 1 is inserted into the oil drain sleeve 6 to be threadedly connected thereto. Oil drain holes are opened on the side walls of the oil drain pipe 1 and the oil drain sleeve 6 respectively, wherein the inner oil drain hole 5 on the oil drain pipe 1 is lower than the outer oil drain hole 3 on the oil drain sleeve 6 when assembled, and Between the inner oil drain hole 5 and the outer oil drain hole 3, there are two sealing rings 4 on the outer wall of the oil drain pipe 1 for sealing the gap between the oil drain pipe 1 and the oil drain sleeve 6. The inner oil drain hole 5 communicates ...
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