High-purity graphite crucible for semiconductor crystal growth

The utility model relates to the technical field of graphite crucibles, in particular to a high-purity graphite crucible for semiconductor crystal growth, which comprises a graphite crucible body, a sealing groove arranged at the top of the graphite crucible body, a connecting thread arranged at the top of the graphite crucible body, a dustproof cover arranged at the top of the graphite crucible body, and a dustproof cover thread arranged on the dustproof cover. And a sealing block is also arranged on the dustproof cover. The graphite crucible has the advantages that the sealing groove and the connecting thread are arranged at the top of the graphite crucible body and used for being connected with the dustproof cover with the dustproof cover thread and the sealing block, so that the graphite crucible is good in sealing effect; the valve plate, the screw, the gear and the driving wheel disc are mounted at the discharge port, the gear can be driven to rotate by rotating the driving wheel disc during use, then t