Clamping jaw type spiral tooth centering device of coal bed gas well drainage mining pump
A technology for coalbed methane wells and centering devices, which is applied in the directions of components, pumps, pump elements, etc. of pumping devices for elastic fluids
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[0034] in figure 1 In the CBM well drainage pump jaw type spiral tooth centering device, it is mainly composed of a centering cover 3, a spiral tooth agitator 4, a centering base body 5, a centering coupling 6 and a docking jaw 7. The centering device It is connected to the bottom end of the extraction pipe 2 through the centering coupling 6, while the extraction rod 1 sequentially penetrates the centering cover 3, the spiral tooth agitator 4 and the centering coupling 6 and is connected to the plunger of the extraction pump , According to the double-cylindrical movement pair between the centering cover 3 and the centering coupling 6 and the extraction rod 1 to realize the downhole real-time centering between the plunger and the extraction rod 1 and the pump barrel.
[0035] in figure 1 The specifications of the claw-type spiral tooth centering device of the coalbed methane well drainage pump are consistent with the diameter of the extraction rod 1 and the diameter of the extracti...
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