US 12,460,744 B2
Assembly for preventing clamping stagnation of valve rod, and valve structure and method for preventing clamping stagnation of valve rod
Jinyuan Qian, Zhejiang (CN); Juan Mu, Zhejiang (CN); Zhenhao Lin, Zhejiang (CN); and Zhijiang Jin, Zhejiang (CN)
Assigned to ZHEJIANG UNIVERSITY, Zhejiang (CN)
Filed by ZHEJIANG UNIVERSITY, Zhejiang (CN)
Filed on Feb. 23, 2024, as Appl. No. 18/585,093.
Application 18/585,093 is a continuation of application No. PCT/CN2022/114333, filed on Aug. 23, 2022.
Claims priority of application No. 202110979625.7 (CN), filed on Aug. 25, 2021.
Prior Publication US 2024/0218941 A1, Jul. 4, 2024
Int. Cl. F16K 41/04 (2006.01); F16K 1/54 (2006.01); F16K 27/02 (2006.01)
CPC F16K 41/04 (2013.01) [F16K 1/54 (2013.01); F16K 27/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An assembly for preventing clamping stagnation of a valve rod, wherein comprising a rigid ring and an elastic ring, the rigid ring is coaxially sleeved in the elastic ring, and an inner wall of the rigid ring is of a straight cylindrical structure; the valve rod is able to move up and down along the inner wall of the rigid ring under a guidance of the rigid ring and forms a sliding pair together with the rigid ring; a joint between the rigid ring and the valve rod is closed,
wherein a circumferential side of an outer wall of the rigid ring near two ends extends outward to form an annular protrusion, and the inner wall of the elastic ring near two ends is recessed to form an annular groove,
wherein the rigid ring and the elastic ring are engaged and connected through the protrusion and the groove.