Transmission mechanism of submerged advection plunger metering pump

The invention provides a transmission mechanism of a submerged advection plunger metering pump, which comprises a shell, a crank, a swing rod, a connecting rod and a plunger connecting rod, the crank is in a disc shape; the circle center of the disc is rotatably fixed on the inner wall of the shell, and the disc is suitable for being connected with a motor; the swing rod is fixed in the cavity of the shell; one end of the connecting rod is fixed at the edge of the disc of the crank, the other end of the connecting rod is fixed on the swing rod, and the connecting rod is suitable for driving the swing rod to do reciprocating motion under the driving of the crank; the plunger connecting rod is provided with a free end and a fixed end; the fixed end is fixed with the swing rod and is suitable for reciprocating motion under the driving of the swing rod; the free end is adapted to transmit kinetic energy. According to the transmission mechanism of the submerged advection plunger metering pump, rolling friction is