Kabushiki Kaisha Powrex

Yasuhiro Hotta

Kazuhiro Uchida

Koji Hasegawa

Yosuke Tomita

Naotoshi Kinoshita

Tarou Endou

Shuichiro Fukuda

Hitoshi Kamada

Kazunori Wakabayashi

A butterfly valve has a circular plate-shaped valve element, a pair of support shafts, a pair of support shaft moving units, and a drive shaft. The valve element is seated on and removed from the valve seat from below. The drive shaft drives and rotates the support shafts. As the support shafts are rotated by the drive shaft, the valve element is rotated and inverted. The support shaft moving units include decentered shafts that are rotatably supported by casings and in which the support shafts are respectively inserted in a decentered state, and air cylinders configured to apply a force to the support shafts in the upward and downward direction. When the valve element is seated on or removed from the valve seat, the valve element is moved in the upward and downward direction in a horizontal posture as the air cylinders operate.

Mechanism for moving circular plate-shaped member

A partition portion includes a proximal portion fixed to the outer periphery of the peripheral wall portion and a sealing member mounted to the proximal portion in a manner that the sealing member is allowed to move in inner and outer circumferential directions of the peripheral wall portion. When receiving a force toward an outer circumferential direction, the sealing member is moved in the outer circumferential direction, and a distal end portion thereof is held in press-contact with a sliding contact portion of a ventilation member with a force generated along with the above-mentioned force.

Coating device

Growing community of inventors

Hyogo, Japan

Yasuhiro Hotta