Title:
微小開度表示機能付き回転弁と微小開度調整方法
Document Type and Number:
Japanese Patent JP6892783
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a rotary valve with a minute opening display function and a minute opening adjustment method, capable of displaying a rotation amount at the time when a valve body rotates from an arbitrary rotational state, to the outside with more accuracy and precision compared to conventional arts, to thereby visually recognize minute opening to improve workability.SOLUTION: The rotary valve with a minute opening display function has a speed reducer 2 having an input shaft 3 and an output shaft, and the speed reducer 2 includes a full opening display part 23 indicating opening of the output shaft and a full opening pointer part 30 pointing the full opening display part 23. On the input shaft 3 side, provided is a minute opening display part 32 configured to display valve body opening corresponding to a rotation angle of the input shaft 3, within a minute opening range. The speed reducer 2 also includes a rotational frequency display part 22 displaying a rotational frequency of the input shaft 3, and a rotational frequency pointer part 31 pointing the rotational frequency of the input shaft 3 at the rotational frequency display part 22.SELECTED DRAWING: Figure 6
Inventors:
Mitsuhiko Kakegawa
Yoshio Hashioka
Yoshio Hashioka
Application Number:
JP2017083204A
Publication Date:
June 23, 2021
Filing Date:
April 19, 2017
Export Citation:
Assignee:
Shimizu Alloy Co., Ltd.
International Classes:
F16K37/00; F16K31/53
Domestic Patent References:
| JP2016011666A | ||||
| JP60215168A |
Foreign References:
| US5769118 |
Attorney, Agent or Firm:
Tetsuo Kobayashi