FLOW REGULATING VALVE - ZHEJIANG DUNAN ARTIFICIAL ENV CO LTD

Title:

FLOW REGULATING VALVE

Document Type and Number:

WIPO Patent Application WO/2022/078219

Kind Code:

A1

Abstract:

A flow regulating valve, comprising: a valve body (10), the valve body (10) having a valve port, and the inner wall of the valve port having a first conical surface (11) and a second conical surface (12), the included angle between a bus of the first conical surface (11) and a radial plane of the valve body (10) being b, and the included angle between a bus of the second conical surface (12) and the radial plane of the valve body (10) being c; and a valve head (20) movably arranged in the valve body (10) to close or open the valve port, the valve head (20) having a chamfer (21), and the included angle between the chamfer (21) and the radial plane of the valve body (10) being a, where b < a < c. The inner wall of the valve port of the valve body (10) has the first conical surface (11) and the second conical surface (12) which have different angles of inclination, and the angle of the chamfer (21) of the valve head (20) and the angles of the first conical surface (11) and the second conical surface (12) meet the relationship b < a < c, such that the flow characteristic curve is in a zigzag shape during opening or closing of the valve port, thereby meeting the usage requirements under certain conditions.

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Inventors:

ZHAN SHAOJUN (CN)
JIANG CHAO (CN)

Application Number:

PCT/CN2021/121854

Publication Date:

April 21, 2022

Filing Date:

September 29, 2021

Export Citation: