Electromagnetic-drive expansion valve

The invention provides an electromagnetic-drive expansion valve which comprises a valve body, a valve plug and an electromagnetic assembly, wherein the valve body is provided with an inflow channel, an outflow channel and a circulating cavity, the inflow channel and the outflow channel are coaxially and oppositely arranged, and the circulating cavity is communicated between the inflow channel andthe outflow channel; the valve plug is arranged at one end of the outflow channel and provided with a valve-plug channel, and a valve port of the valve-plug channel faces to the inflow channel; and the electromagnetic assembly comprises an electromagnetic draw bar which carries out reciprocating motion along the direction perpendicular to the inflowing direction of a medium in the inflow channel,a first end of the electromagnetic draw bar is provided with a sealing component covering the valve port, and the sealing component opens or closes the valve port with the reciprocating motion of theelectromagnetic draw bar. T