Multi-pump integrated mixed fluid delivery device

A multi-pump integrated mixed fluid delivery device, which comprises a hollow cylindrical casing, a hydraulic drive part, a power part, a sample part and a pipeline unit, wherein:

• the hydraulic drive part, the power part, the sample part and the pipeline unit are provided within the casing in sequence;
• the hydraulic drive part comprises multiple hydraulic plunger pumps, wherein an output end of each of the plunger pumps is connected with an oil output pipe, drive shafts of the hydraulic plunger pumps are connected with each other through gears which are engaged with each other;
• the power part comprises a dual-shaft motor, wherein a first output shaft of the dual-shaft motor, which is provided at one end of the dual-shaft motor, is connected with one of the gears;
• the sample part comprises a lead screw, a screw nut, a piston rod and a sample chamber, wherein one end of the lead screw is connected with a second output shaft of the dual-shaft motor, which is provided at another end of the dual-shaft motor, the screw nut is sleeved on the lead screw, the piston rod is fixedly connected with the screw nut, and the sample chamber is configured to accommodate a sample;
• the pipeline unit comprises a cable passage and multiple oil output pipes comprising the oil output pipe, wherein:
• the cable passage is configured to transmit signals, the oil output pipes are configured to convey hydraulic oil;
• the pipeline unit is provided within a mounting base of the hydraulic drive part, the power part and the sample part;
• the first output shaft of the dual-shaft motor drives the hydraulic plunger pumps to synchronously rotate through the gears, so as to suck hydraulic oil in a mounting chamber of each of the multiple hydraulic plunger pumps for pressurization, and then different flow rates of pressurized hydraulic oil are outputted through the oil output pipes respectively;
• the second output shaft of the dual-shaft motor drives the lead screw to rotate, so that the screw nut drives the piston rod to axially move, so as to suck an external sample into the sample chamber and deliver to a sample cylinder.