Drainage device

Abstract

The drain device (1) begins to drain water by rotating the drain handle (3), and simultaneously returns the drain handle (3) to the stop position to stop the water flow. The drain device (1) has a cylindrical thermostat (8) that mixes the supplied hot and cold water inside and discharges it in the axial direction. The water channel (W) extending in the axial direction from the thermostat (8) is opened and closed by the axial movement of the diaphragm valve body (13). The diaphragm valve body (13) is opened and closed by the opening and closing mechanism (15) as the drain handle (3) rotates. The deceleration mechanism (16) rotates by the water flow generated by opening the diaphragm valve body (13), and the deceleration mechanism (16) returns the drain handle (3) to its original position. The drain handle (3), the thermostat (8), and the diaphragm valve body (13) are arranged such that their respective central axes are in the same axial direction, and they overlap when viewed in the axial direction.

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