自動清掃機能付き減圧弁

Japanese Patent JP7325118

B2

To provide a pressure reducing valve having an automatic screen cleaning mechanism for preventing accumulation of foreign matters on a screen.SOLUTION: A pressure reducing valve is arranged on a main passage 1 of a fluid S and reduces the pressure of a primary side to the pressure of the secondary side. The pressure reducing valve includes a main valve body 18 which opens/closes the main passage 1, and a pilot valve unit 30 which operates opening/closing of the main valve body 18. The pilot valve unit 30 includes: a pilot valve body 32 which opens and closes between a flow-in passage 62 and a flow-out passage 68 of the fluid S; a screen 66 which is arranged in the flow-in passage 62 and removes foreign matters 80 in the fluid S; a brush unit 90 which sweeps out the foreign matters 80 attached to the screen 66; and an automatic cleaning mechanism of the screen 66. The automatic cleaning mechanism includes: a first brush driving unit 74 which moves the brush unit 90 in a first direction X1 along an axis of the screen 66 while receiving a difference between the pressure of the primary side and the pressure of the secondary side during a period of valve closure; and a second brush driving unit 75 which moves the brush unit 90 in a second direction X2 opposite to the first direction X1 during a period of valve opening.SELECTED DRAWING: Figure 5

Yukio Kitamura

JP2020207004A

August 14, 2023

December 14, 2020

Click for automatic bibliography generation  

Miyawaki Co., Ltd.

G05D16/16; F16K51/00

JP2018189173A

US20100116754

Shuji Sugimoto
Takero Tsutsumi
Kenichi Nakata
Daisuke Kaneko

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