Improved plunger type electromagnetic water pump

The utility model discloses an improved plunger type electromagnetic water pump, which comprises a pump body, an electromagnetic coil module arranged outside the pump body, and a magnetic core plunger arranged inside the pump body, wherein the pump body comprises a main casing pipe with a water inlet and a front casing pipe with a water outlet, and the main casing pipe is in threaded connection with the front casing pipe; the plunger is internally provided with a channel capable of communicating the water inlet and the water outlet, and the channel is internally provided with a one-way valve; and one end of the plunger, close to the water inlet, is provided with a return spring acting on the plunger, on end of the plunger, close to the water outlet, is provided with an extension plunger with the diameter smaller than that of the plunger, and a check valve is arranged between the tail end of the extension plunger and the water outlet. Compared with the prior art, the improved plunger type electromagnetic water