Apparatus for releasing cleaner in flush toilet

An apparatus for releasing a cleaner in a flush toilet, wherein the apparatus is placed in a water tank of a flush toilet during use, and comprises a container;

• the container is provided with an opening, and a cleaner is provided in the container;
• the apparatus comprises a filling member;
• the filling member is able to extend into the container from the opening, and there is a gap between the filling member and the opening;
• the filling member or the container is connected to a floating body;
• relative movement between the container and the filling member occurs by means of a buoyancy effect, on the container or the filling member, of rising and drawdown of water in the water tank of the flush toilet, and a space that the filling member occupies the container changes;
• during the drawdown of the water, the filling member occupies more space in the container, and the water in the container flows out;
• and during the rising of the water, the water outside the container flows into the container, and the filling member occupies less space in the container;
• and the container is provided with a through hole, and the through hole communicates with the opening via the space in the container.