Sand prevention stop-adding oil-well pump device
An oil well pump and sand control technology, which is applied to components, pumps, and pump control of elastic fluid pumping devices, and can solve problems such as reducing oil pumping output, wasting electric energy, and increasing wear gaps
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[0008] see below figure 1 and figure 2 To elaborate: in figure 1 and figure 2 Among them, the anti-sand card increasing oil pump device is composed of a pump barrel 1, an upper expansion ring 2, a lower expansion ring 3, a pump cap 4, a ball 5 and a pump body 6. The pump barrel (1) is a cylindrical body; the upper expansion ring (2) is an annular body with an opening in the longitudinal direction of the ring wall, an internal thread on the inner wall of the ring, and a bevel on the outer end surface of the ring; the lower expansion ring (3) is a circular ring body, with an opening in the longitudinal direction of the ring wall, and an internal thread on the inner wall of the ring; an internal screw hole is provided at the center of the top of the pump cap (4), and several openings are provided on the periphery of the screw hole, and the pump cap ( 4) The upper periphery of the barrel is provided with external threads, and the inner and lower part of the pump cap (4) is pr...
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