Patent ID: 11898660
Assignee: BUENO TECHNOLOGY CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 3:
4. The sealing mechanism of the fluororesin diaphragm valve as claimed in claim 3, wherein the external ring surface of the annular portion is provided with an external screw thread, and a plurality of screw threads of the internal screw thread and the external screw thread are overlapped in the axial position, the ribbed plate structure connects the external screw thread, the valve upper cover is provided with an internal screw thread for tightly locking and engaging with the external screw thread of the annular portion; the axial position of the internal screw thread of the annular portion is contained by the axial length of the external screw thread and the ribbed plate structure; when the valve upper cover is tightly locked to the external screw thread, a plurality of screw threads distributed in the axial direction of the internal screw thread of the valve upper cover and the locking screw thread of the upper valve body are overlapped.