Physical phenomena and principles related to water saving toilets

The toilet works as follows:1. When you press the button, you pull the chain inside the toilet, so you can open the flush valve.

2. Then you will find that there is a large amount of water in the tank to flush into the toilet, so as to flush it clean, and then the flush valve will also return to its original position.

3. The impulse of the water will activate the siphon in the urinal, and the siphon will suck the dirt in the urinal into the drain.

4. At the same time, the water level in the tank will drop, and the floating block will also drop. The lowered float opens the water valve.

5. The water flows through the water valve to fill the water tank and urinal. When the tank is filled with water, the float will float up, and when the float reaches a certain height, the water supply valve will close.

6. If the toilet is faulty and the water valve cannot be closed, the overflow pipe can prevent the water in the tank from overflowing.

There are two principles of toilet flushing: one is flush and the other is siphon. The impulse of the straight flush is all completed by the difference between the ups and downs of the water flow.

Siphon type means that when the water rotates through the pipe and falls downward, it will produce a suction, and some pipes will add a nozzle to increase the strength of the flush, so as to achieve less water but no reduction in the impulse.

How the flushing process of the toilet works.

The modern toilet was invented by Geberit in Switzerland more than 100 years ago, when it used nearly 30 liters of water, until the seventies of the last century, the toilet still used 25 liters of water, with the development of environmental protection and water-saving undertakings to the eighties of the last century, 13 liters of water appeared, 9 liters appeared in the nineties, at the end of the last century, Geberit invented 9 liters of double flushing, with the development of time in Singapore now at least liters, of course, there is no water, but I think that kind of economy is not cost-effective.

Jet siphon type mainly relies on air suction.

Summary. The principle of leverage and buoyancy is mainly used. When discharging water, pull the drain knob, and the knob pulls up the water outlet plug through the lever.

In this way, the water from the tank will be released. After the water is released, the outlet plug falls down, blocking the water outlet. At this time, the float is also at the bottom of the tank due to the drop of the water surface.

The fall of the float drives the lever to pull up the water inlet plug and let the water enter the tank.

The three physical knowledge involved in the toilet bowl 1, the formula of gravity: g = mg2, Bernoulli's principle p1 + 1 2 v1 + gh1 = p2 + 1 2 v2 + control principle u(t) = kp [e(t) + 1 ti e(t) dt + td*de(t) dt].

Don't formula. The principle of leverage and buoyancy is mainly used. When discharging water, pull the drain knob, and the knob pulls up the water outlet plug through the lever.

In this way, the water from the tank will be released. After the water is released, the outlet plug falls down, blocking the water outlet. At this time, the float is also at the bottom of the tank due to the drop of the water surface.

The fall of the float drives the lever to pull up the water inlet plug and let the water enter the tank.

1. The principle of flush toilet.

The basic principle of the flush toilet is to use the gravity of the water to convert the potential energy of the water into the kinetic energy of the water, so as to carry the excrement into the sewer pipe.

The specific working process is as follows:

1) Use the water discharge knob and water plug to control the water discharge and water storage, when using, directly rotate the water discharge knob, and then use the metal rope or nylon rope connected to the water plug to pull the water plug up;

2) When the water plug pulls up the outlet pipe port, the outlet pipe will put the water into the urinal, and then use the gravity of the water and the kinetic energy converted by potential energy to flush the excrement into the sewer pipe;

3) At the same time, when the water level drops to a certain water level, the water plug will be re-pressed into the port of the outlet pipe due to the negative pressure generated by the gravity of the water, and the water outlet will be blocked, and the water will no longer be released, and then a new water storage stage will begin;

4) When the water level drops and flushes the urinal, the float and the lever Bihaoyuan drive the lever due to the drop in water level and the gravity of the float, that is, open the water replenishment mechanism and start synchronous water replenishment;

5) The water replenishment stage is mainly to use the buoyancy and lever of the float to control the water replenishment of the water tank, when the float descends to the position, just the water plug is pressed into the mouth of the water pipe by negative pressure, and the water tank begins to store water;

6) The water inlet pipe is connected to the water pipe to be responsible for the input of the water source, when the water supply reaches a certain height, the buoyancy of the water will jack up the float, and the linkage lever will close the water supply mechanism and stop the water supply.

2. Flush toilet structure.

The flush toilet is composed of the following main parts: inlet pipe, outlet pipe, seepage pipe, water plug (inlet and outlet), float, drain knob and lever, repentant water mechanism, water tank, urinal (the urinal has a bend connecting to the water tank).