Divided flush water-saving squatting pan of public toilet

The utility model discloses a water-saving squat pan (77) that allows flushing in sections for public toilets. The squat pan uses a water sealing plug valve device (3) to close or open a sewage discharge outlet (11) at the bottom of the squat pan. The water sealing plug valve device (3) is communicated with a water corridor (7) at the top of a water flow switching device (2). A sectional flushing device (4) is connected with another water corridor (5) of the water flow switching device, and able to flush the squat pan by sections. The sectional flushing device uses a metal piston in the chamber to move up and push an interception gate to achieve the sectional flushing. The piston can also be made of lightweight materials, and the lifting speed of the piston can be controlled by a hydraulic cylinder. The lifting speed of the piston can also be controlled through an air discharge hole in the center of the valve core at the upper part of the chamber and by using the material with an appropriate density. The device involves no use of external force such as power, and only uses the water pressure in the pipe to achieve the sectional flushing of the squat pan, and opening and closing of the sewage discharge outlet.