▎ 摘　　要

NOVELTY - The utility model claims a diamond valve seat for preparing ultra-high pressure graphene, comprising a valve seat main body, a first connecting flange; valve core mounting cylinder; two sides of the valve seat main body and are upper end with an opening; the first connecting flange connecting ring side end fixedly connected with connecting ring outer wall and the valve seat main body two side opening inner wall are provided with a screw thread; and the first connecting flange is connected and installed on the two sides of the opening of the valve seat main body through the thread connecting ring the outer side of the first connecting flange is fixedly installed on the outer side of the valve seat main body through a fixing bolt; the outer side of the valve core mounting cylinder is fixedly sleeved on the limiting disc; the part of the outer wall of the valve core mounting cylinder located at the bottom of the limiting disc is provided with a screw thread; and the valve core mounting cylinder is inserted and mounted on the opening of the upper end seat main body. The utility model is convenient to disassemble the structure connected and installed in the valve seat; it is convenient to change when the subsequent damage; it greatly reduces the whole maintenance costs practical effect is good; it is worthy of popularization and use in the existing market.