Patent ID: 9080689
Filing Date: 2015-07-14
Classification: F16K,Y10T

Abstract:
1. A float type drain trap, in which a gas-liquid mixture of compressed air and drain water generated from the compressed air is received from a flow-in opening formed in an upper portion of a cover, the drain water is separated from the gas-liquid mixture, and the drain water is discharged from a discharge opening formed in a lower portion of a side wall, wherein a float that swings about a float pivot shaft fixed on the cover as a water surface rises and falls and an opening/closing valve that swings about a valve pivot shaft fixed on the cover between a valve seat and an arm stopper are connected to each other by a spring having connecting portions at both ends respectively connected to a hole on a side of the float and to a spring bearing on a side of the opening/closing valve, wherein the float is configured by a float main body, a float arm having one end to which the float main body is fixed and the other end on which the float pivot shaft is disposed, and a spring arm fixed to the float arm and formed with said hole at an end portion on an opposite side to the float arm, wherein the opening/closing arm is configured by a valve arm having one end on which the valve pivot shaft is disposed and the other end on which the spring bearing is fixed, and a valve body fixed on the valve arm in a vicinity of the valve pivot shaft and configured to open and close the valve seat, and wherein a buoyancy of the float compresses the spring, and a force of the compressed spring opens and closes the valve seat connected to the discharge opening, thereby discharging the drain water intermittently.