Load balancing mechanism of submersible diaphragm pump and submersible diaphragm pump

The invention discloses a load balancing mechanism of a submersible diaphragm pump, which comprises a small bevel gear, a large bevel gear, a crankshaft, a plunger and an energy storage spring, the small bevel gear and the large bevel gear are meshed with each other, and the small bevel gear is fixedly connected with an output shaft of a submersible motor; the crankshaft is fixedly connected with the large bevel gear; the upper end of the plunger is connected with the eccentric part of the crankshaft; the plunger is movably arranged in the cylinder sleeve; the crankshaft rotates to drive the plunger to reciprocate up and down in the cylinder sleeve; the upper end of the energy storage spring is connected with the lower end of the plunger, and the lower end is connected with a spring adjusting pressing block. According to the invention, the impact load of the plunger acting on the submersible motor can be balanced and adjusted into a stable load, so that the specification of the submersible motor can be reduce