Multiple sealed stop valve of combination valve clack

The utility model relates to a multiple sealed stop valve of combination valve clack, including valve body, disk seat, valve clack, valve rod, valve gap, support, hand wheel, mainly be that the valve clack adopts the composite structure who comprises main valve lamella and vice valve clack, the outer circumference system of main valve lamella has a round conical sealing surface, makes downwardly extending's cylinder at round conical sealing surface downside, vice valve clack by screw fixed mounting under the cylinder on the terminal surface, it has toroidal cavity to make between terminal surface and the vice valve clack up end under the cylinder, and the system has guide pressure hole, this guide pressure hole intercommunication toroidal cavity inboard and valve body intake channel, the annular tetrafluoro sealing washer of installation in the cavity of the triangle -shaped inclined plane structure outside toroidal cavity on the vice valve clack, the disk seat has the sealed face of mutually supporting with the round conical sealing surface and the annular tetrafluoro sealing washer of main valve lamella, forms the sealed vice structure of multichannel, has the sealed face wearing and tearing function of pressure medium self sealss function and automatic compensation, and sealing performance is good. Be applicable to high pressure, the polishing machine medium operating mode in fields such as petrochemical industry, electric power.