Flow division valve

The invention discloses a flow division valve which comprises a first electromagnet assembly, a second electromagnet assembly, a third electromagnet assembly and a fourth electromagnet assembly. The first electromagnet assembly, the second electromagnet assembly, the third electromagnet assembly and the fourth electromagnet assembly each comprise a gasket, a static iron core, a movable iron core and an electromagnetic shell. Each gasket is inlaid in the corresponding static iron core. Each static iron core and the corresponding electromagnetic shell are fixed into a whole. Multiple symmetrically-formed first exhausting grooves are machined in the side wall face, adjacent to the corresponding electromagnetic shell, of each movable iron core. Multiple symmetrically-formed second exhausting grooves are machined in the face, making contact with the corresponding static iron core, of each movable iron core as well. Each second exhausting groove correspondingly communicates with one first exhausting groove. The per