An underground submersible diaphragm pump
A diaphragm pump and sheath technology, used in pumps, wellbore/well components, pumps with flexible working elements, etc., can solve the problems of high maintenance operation costs, breakage, and high failure rate of pump cards, and achieve maintenance operation costs. High and long life effect
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[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0030] See attached figure 1 , the downhole submersible diaphragm pump of the present invention includes a liquid inlet valve assembly 1, a cylinder body 3, a connecting rod plunger 5, a transmission box body 6, a transmission shaft 9, a coupling 12, a motor 14, and a conical pinion 17 , Conical bull gear 18, eccentric shaft 19, spring 22, righting block 23, diaphragm 24, valve box 29, drain valve assembly 31, sheath 32.
[0031] Among them, the motor 14 and the transmission shaft 9 are connected through a coupling 12, the second seal 11 and the third seal 16 are respectively installed between the transmission shaft 9 and the transmission box 6, and the shaft end of the transmission shaft 9 is equipped with a bevel pinion 17. The conical pinion 17 meshes with the conical large gear 18. The conical large gear 18 is mounted on the eccentric shaft 19. The eccen...
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