US 12,644,267 B2 · Pneumatic drain valve driving device

Abstract

A pneumatic drain valve driving device includes a cylinder, including a cylinder body and an air chamber. The air chamber includes an air chamber communication port in air communication with an outside of the cylinder body; and an air chamber exhaust port configured to be connected to a pneumatic drain valve. The cylinder also includes a liquid chamber, including a drain hole configured to receive a slide valve. The cylinder also includes a piston disposed in the cylinder body. The device also includes a pilot valve, connected to the liquid chamber through a waterway and including a pilot valve control port. The device also includes a linkage trigger mechanism disposed between the pilot valve control port and the slide valve and configured to control an opening and a closing of the pilot valve control port and the slide valve.

Claims14

Dependent claims

A pneumatic drain valve driving device, comprising:

a cylinder, comprising:
a cylinder body;
an air chamber, comprising:
an air chamber communication port in air communication with an outside of the cylinder body;
and
an air chamber exhaust port configured to be connected to a drain valve;
a liquid chamber, comprising:
a drain hole configured to receive a slide valve;
a piston disposed in the cylinder body and configured to divide the cylinder body into the air chamber and the liquid chamber;
a pilot valve, connected to the liquid chamber through a waterway, the pilot valve comprising a pilot valve control port;
and
a linkage trigger mechanism disposed between the pilot valve control port and the slide valve and configured to control an opening and a closing of the pilot valve control port and the slide valve.

9 more elements

Dependencies are inferred from the claim text.

Pneumatic drain valve driving device

Life of this patent

Pneumatic drain valve driving device

Life of this patent

Abstract

Claims14