Doomsday: Humanity shrinks 100 times

Chapter 87 Simple Machines from a Miniature Perspective

Lu Yuning didn't think about the modification of the steam pump for the time being, because it was still difficult to improve it with the current capabilities.

Even if the profit can be achieved, it is too low and the labor is not proportional to the harvest.

The steam pump in front of me has stopped supplying water and the container has been filled with water.

Everyone was naturally happy.

But the process is not over yet. The last step is to send the water in the device to the water tank above the head.

The process is relatively simple, just control the valve and heat the boiler.

Sure enough, there were no accidents in the end, and the water in the device was successfully pressurized into the water tank.

At this point their entire water supply system was completed.

The first tank of water was successfully collected in the water tank, but of course the amount of water was not much.

Lu Yuning hesitated for a while when doing it, and finally upgraded the water tank from the minimum requirement of 200ml to 500ml.

Due to its capacity, the steam pump in front of us can only extract and deliver about 100ml of water at a time.

So they have to repeat the previous operation several times before they can fill the entire water tank.

Xu Qi didn't want to watch the rest of the repetitive operations anymore. She said goodbye to Xu Lele, said hello to everyone, and rushed back.

Lu Yuning's words gave her a lot of inspiration, and she planned to go back and discuss with everyone how to use supernatural powers.

Moreover, their shelter was about to be officially built. Seeing that Lu Yuning's side was developing so fast, she was a little anxious.

"Do you want to do it a few more times?" Zou Yunxin seemed to be enjoying it.

"Just store another 200ml. Although I made it 500ml in capacity, I actually divided it into two parts. 300ml is used to store river water, and 200ml is used to store filtered water. When I went up there before, I also installed the filter. After that, the river water will be automatically filtered into clean water. So although our actual capacity limit is 500ml, we actually have to wait until the sewage is filtered out." Lu Yuning said.

Everyone understood and it seemed that they didn't have to worry about water filtration in the future. With the water tank, the water filtration work would continue.

After a while of hard work, the entire water storage work was finally completed.

In order to confirm whether the water tank is working properly, Lu Yuning has to climb up again.

This climbing work is a bit too time-consuming. Next, I have to see how to design a lifting device. Lu Yuning has also put this facility on the agenda.

Lu Yuning climbed onto the aerial platform and looked at the huge water tank filled with water in front of him, feeling quite satisfied.

Then he looked at the filter again, and clean water was already flowing out from the water filter outlet below.

There is now a little water in the water purification container below, and it seems that the whole device is running well.

There is a main valve near the water tank. Just open it and the water will flow.

But there is no rush now. Although the water supply system is ready, the water supply system has not been built yet.

The construction of the water supply system is relatively simple, provided that the pipeline planning is done well.

However, there are currently no other facilities that require water supply, only the two toilets built previously.

Just connect them to the water system first.

Lu Yuning climbed down again in a hurry.

"It's done, the water supply system is completely finished," Lu Yuning clapped his hands and confirmed to everyone. "So should we start with the bathroom?" Zhang Xinyue's eyes lit up, and she looked forward to it.

"Ah, well, I think we should connect the toilet first, mainly because the bathroom hasn't been dug out yet."

"Yeah, that's true." Zhang Xinyue was a little depressed.

"."

Lu Yuning couldn't help but smile bitterly. It seemed that this bathing facility had to be built no matter what.

Zou Yunxin asked curiously, "How do I connect to the bathroom?"

"Just like a home bathroom, just get a dedicated water tank for the toilet and see if you can make a simple mechanical device to automatically control water storage." Lu Yuning explained briefly.

"Things like gears and pulleys," Zou Yunxin continued.

"Yes, but the definition of a mechanical device is quite broad. Not all mechanical devices use gears and pulleys. In short, any tool that can reduce the difficulty of work or save effort can be called a mechanical device."

"So how is the mechanical device of a toilet generally implemented?" This was the question asked by Zhang Xinyue.

Although she has some knowledge of physics and chemistry, she obviously lacks knowledge of some common sense in life.

It is also conceivable that few girls would study how the toilet tank works.

Lu Yuning studied it when he was bored.

"Under normal circumstances, the toilet tank mainly relies on the float valve to control the water inlet and water outage."

"Float valve? Buoyancy?" Zhang Xinyue thought thoughtfully.

"Well, the buoyancy valve is a simple lever device with a buoyancy ball on one end and a plug-like thing on the other. When there is enough water in the water tank, the buoyancy ball will be lifted up by the buoyancy, and under the action of the lever, the plug on the other end will be firmly buckled on the water inlet," Lu Yuning said as he gestured.

"Oh, I see." Zhang Xinyue immediately understood.

The others were confused, but they were used to it. Anyway, they decided to leave this brain-wasting task to these two people.

"But we can't seem to figure out how to make a buoyancy valve right now. The buoyancy shouldn't be enough. We don't have enough water, so we can't use a large buoyancy device. Buoyancy is only related to the volume of water displaced."

"That's right, so I said it was under normal circumstances. In the shrunken world, this kind of mechanical device can no longer be used, so we may have to use another method to achieve it. I'd like to trouble you to think of a solution." Lu Yuning threw a difficult question to Zhang Xinyue, and it was obvious that he had already thought of this problem.

In the miniature world, many physical devices cannot be directly scaled down and used.

For example, the water tank in this bathroom can also be made into a similar device, but it is scaled down to one percent of its original size.

However, although the device looks the same as before, it is actually useless.

One is the problem of water tension.

If the amount of water is insufficient and the gravity of the water droplets is less than the tension of the water, it will be difficult for the water in the toilet tank to flow out.
From a miniature perspective, the general phenomenon is: although the box looks full of water, when the valve is opened, the water stubbornly clings to the wall of the container like glue.

Another problem is the buoyancy mentioned earlier, although from their current visual sense, the capacity of the water tank is the same as before.

But the actual amount of water is only a few tenths of a milliliter.

The buoyancy exerted on objects in water is related to the volume of water displaced, so a buoyancy device that looks the same as before can actually generate almost zero buoyancy.

Not to mention blocking the water outlet with the lever, even the lever itself cannot be lifted.

(End of this chapter)