Righting structure for preventing sucker rod pump plunger from eccentrically-wearing
An oil well pump and plunger technology is applied in the field of righting structures for preventing eccentric wear of the plunger of a rod oil well pump.
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0026] Such as figure 1 , 3 As shown, the centralizing structure for preventing the eccentric wear of the plunger of the rod well pump disclosed by the present invention includes a centralizing device 1, an equal-diameter sucker rod 2, a pump barrel 3 and a plunger 4, and the centralizing device 1 and the plunger 4 are coaxially arranged In the pump cylinder 3, the centralizing device 1 is located at the outer end of the plunger 4. The outer wall of the centralizing device 1 is threadedly matched with the inner wall of the pump cylinder 3. The center of the centralizing device 1 has an oil rod guide hole 11 arranged axially. The inner diameter of the oil rod guide hole 11 is Adapted to the outer diameter of the equal-diameter sucker rod 2, one end of the equal-di...
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