▎ 摘　　要

NOVELTY - The utility model claims a diamond valve core for preparing ultra-high pressure graphene, comprising a valve core main body, the outer side of the valve core main body is provided with an adjusting block connected with the screw thread structure of the valve seat, the upper end of the valve core main body fixedly connected with with a valve rod, the upper end of the valve rod is fixedly connected with with a connector, the outer side of the connector is provided with an annular handle, the outer side of the connecting joint is fixedly provided with multiple groups of force applying mechanisms, the force applying mechanism comprises a fixing rod fixedly connected to the outer side of the connecting sleeve, the outer side of the annular handle is provided with a through hole butted with the fixing rod, the fixing rod is movably inserted with a threaded rod, and the threaded rod is movably penetrated through the through hole and extends to the outer side of the annular handle. The utility model can adjust the length of the whole force applying mechanism through the connecting structure, by increasing the length of the force arm of the force, so as to save the force; it is more convenient to rotate the tightly connected valve core so as to open or close the valve, the whole structure design is simple and reasonable, convenient and practical, It is worthy of popularizing and using in the existing market.