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

Claim 9:
10. The sealing mechanism of the fluororesin diaphragm valve as claimed in claim 1, wherein the exterior ring surface of the annular portion is provided with an external screw thread, the valve upper cover includes an inner accommodating chamber, an external ring surface, an internal screw thread, a top, a shaft hub portion, a central hole, and a sealing ribbed plate; the force-applying member is the sealing ribbed plate of the valve upper cover; the sealing ribbed plate is located between the shaft hub portion and the internal screw thread, a threaded groove is formed between the annular sealing ribbed plate and the internal screw thread, a shaft hub groove is formed between the shaft hub portion and the annular sealing ribbed plate; a lower end of the annular sealing ribbed plate is formed with an annular tightening groove, an opening of the groove faces the internal screw thread and faces downward, the tightening surface is provided at an upper bottom of the tightening groove; the tightening ring is installed in the annular tightening groove; a plurality of radial ribs are connected between the shaft hub portion and the annular sealing ribbed plate to provide higher rigidity of the sealing ribbed plate and to isolate heat transferred from the valve shaft; when the valve upper cover is tightly closed by the annular portion, the structure of the annular portion is embedded in the threaded groove, the exterior ring surface of the sealing ribbed plate is provided with a plurality of convex longitudinal ribs, and the plurality of convex longitudinal ribs are adjacent to the internal ring surface of the annular portion to provide structural rigidity and to isolate heat transferred from the peripheral portion of the diaphragm.