公开(公告)号：US20190078437A1

公开(公告)日：2019-03-14

申请号：US15924296

申请日：2018-03-19

Applicant: Shaobin WANG ,  Yongqin WANG

Inventor： Shaobin WANG ,  Yongqin WANG

IPC: E21B49/08 ,  F04B19/22 ,  F16H25/20

Abstract: An integrated apparatus for precisely and synchronously controlling amounts of discharged hydraulic oil and fluid using a motor, includes a housing. A movable dual-piston extractor, a motor and a plunger pump are configured in the housing and sequentially connected. A hydraulic pipeline and a fluid pipeline are connected with the housing to control flows of hydraulic oil and a fluid. A specified amount of fluid sample can be precisely extracted by precisely controlling, according to a control circuit, the number of rotations of the motor, which is indirectly reflected to a travel distance of the lead screw. A motor indirectly drives a lead screw, a nut and a piston to move linearly along a hydraulic chamber through mechanisms including a transmission shaft, and according to a position where the transmission shaft of the motor rotates, the displacement distance of the piston can be measured precisely.