Water seal mechanism

The utility model provides a water seal mechanism which comprises an installation shell, a driving module and a water seal module, the driving module and the water seal module are assembled on the installation shell, the water seal module is hinged to the installation shell, the installation shell is provided with a guide hole, and the driving module comprises a driver and a piston rod. The piston rod is assembled in the guide hole to form guide fit, the driver is connected with the piston rod, the piston rod is connected with the water seal module, and the driver drives the piston rod to move back and forth in the guide hole to drive the water seal module to be switched between a plugging position and an opening position; the device can be well applied to a closestool without an S-shaped bent pipe structure so as to plug and open a sewage draining exit of the closestool. 本实用新型提供一种水封机构，包括安装壳体以及装配在安装壳体上的驱动模块和水封模块，所述水封模块铰接于所述安装壳体上，所述安装壳体具有一个导向孔，所述驱动模块包括驱动器和活塞杆，所述活塞杆装配于导向孔内以形成导向配合，所述驱动器连接所述活塞杆，所述活塞杆连接所述水封模块，所述驱动