"Congratulations, Ada, you've finally got this thing out. "In the midst www.biquge.info of the noisy rotation of the steam engine, Marin said loudly.

"Thank you so much for Mr. Watt's ideas." Leonardo da Vinci smiled happily. After saying that, he took Marin away from the steam engine to make it easier to speak.

"Well, it looks like it can be used for pumping!" Marin looked at the steam engine that couldn't stop spinning, and said thoughtfully.

"Pumping?" Before, Leonardo da Vinci was busy with the research and development of the steam engine, and did not pay attention to the purpose of the steam engine.

"Of course, the steam engine is naturally for pumping water. I have a deep mine on the island of Ireland, up to 50 meters deep, and I don't think it would have been possible to mine it without a steam engine to pump water. "Marin is talking about the lead-zinc mine in Mount Tara. Over there, Van Goray had already sent someone to dig a deep well, and as long as he found the mine, then he would first need a pumping machine.

After all, Mount Tara is located in the eastern plains of the island of Ireland, which is a humid region with a humid climate, and groundwater is bound to be abundant. Even after discovering an underground river where groundwater is surging, it is possible to block the river by digging another well to block it so that the groundwater does not gush out. However, with the mines over there, underground water seepage is inevitable. Even if the underground river is blocked, some water will penetrate through the moist soil. Therefore, it is inevitable that the pumping machine needs to work frequently. The pump just burns a little coal, and the cost is not too high.

"That'...... What kind of water pump do you use? ”

Nowadays, in Europe, there are no long-range pumps, and windmills pump water, and they are more like windmills driving things like waterwheels, lifting water from low to high places.

However, the pump problem is not a problem for Marin. There are three types of pumps that Marin knows and understands - centrifugal pumps, screw pumps, and piston pumps.

Speaking of which, in later rural areas, centrifugal pumps were the most commonly used pumps. However, Marin was the first to rule out centrifugal pumps. Why? Because the centrifugal pump relies on the high-speed rotation of the impeller to generate suction and pump water up. But the problem is on a "high speed". The rotational speed of the steam engine...... Don't mention it. Ada created the Watt steam engine, which rotates at only 50 revolutions per minute, to drive a centrifugal pump, which is absolutely less than a few meters high. The Tara lead-zinc mine needs to pump water to a height of 50 meters, so the centrifugal pump is OUT first.

Next up is the piston pump, in fact, the piston pump is the best pump to pump deep groundwater and even oil. The "kowtow machines" that pumped oil in later generations used piston pumps to pump oil. This kind of kowtow machine, there are several kowtow machines near Ma Lin's grandmother's house in his previous life, and he always likes to go to see the "kowtow machine" kowtow when he was a child.

Moreover, this vertical steam engine is actually a natural kowtow machine. If the "solar and planetary gear transmission system" is canceled, the connecting rod of the vertical steam engine is reciprocating up and down, which is very suitable for supporting piston pumps.

However, Marin knows that the biggest problem with piston pumps lies in this "piston". To pump groundwater up from such a deep underground, it is clear that the piston has to be very gas-tight. Otherwise, if you don't hold your breath well, you may not be able to work.

Marlin now cannot guarantee that it will produce a good quality piston pump, or even that it will hold air well. Therefore, no matter how good the piston pump is, Marin can only give up, who calls the processing level of this era too poor......

Next, it's time for the screw pump. The structure of this screw pump is very simple, that is, a screw rod in the tube is constantly rotating, and it relies on the volume change of the sealing cavity formed by the screw rod and the bushing (inner wall of the tube) to suck in and discharge the liquid.

In fact, this water pump, as early as BC, was invented in Egypt by the great ancient Greek scientist Archimedes. According to the ancient Greek historian Diodorus, Archimedes saw the local Egyptian farmers using buckets to carry water for irrigation, felt that the farmers were too hard, and developed sympathy, so he came up with a way to design a pump instead of buckets to carry water for irrigation.

Archimedes made a large spiral, put it in a cylinder, made a crank at the top, and opened the spout on the top side. As long as you keep shaking the handle, the water will flow out without stopping.

Later, this simple artificial water pump quickly spread in Egypt. After the Roman Empire conquered Egypt, the Romans also learned from it. Unfortunately, after the invasion of the Germanic barbarians, European technology was set back by hundreds of years, and in Western Europe, this kind of thing was also lost. However, Western Europeans did invent the waterwheel, a tool that relied on the forces of nature to lift water, and did not need this kind of human-dependent Archimedes screw pump.

The force required for the Archimedes screw pump is to rotate, and the Watt steam engine is just able to provide a stable rotational force. Therefore, the combination of a Watt steam engine and an Archimedes screw pump is a perfect combination.

Marin explained the history and principle of Archimedes' screw pump to Leonardo da Vinci in detail, and Da Vinci thought for a while and said:

"I really wanted to see this historical introduction, but I didn't pay much attention to it at the time. Because, at that time, I felt that this kind of water pump that was shaken by human power was not as convenient as a water wheel driven by natural forces, so I didn't pay much attention to it. However, now that we have a steam engine, it seems that it can really be used......

Marin didn't talk nonsense, he directly called a few carpenters, and it took half a day to make a very small spiral wooden pole and a sleeve. Then, a living model of the Archimedes screw pump came out. It's a good thing to pump water.

The most important thing is that the head of the screw pump is large, which can reach 68 meters. In the early days of the Newcomen steam engine, the vacuum pump could only pump water to a height of 10 meters at most. Obviously, in mines more than 50 meters deep, that kind of vacuum pump pump is useless. Only screw pumps with a head of up to 68 meters can be practical.

The problem is that it is extremely difficult to make a 50-meter-long screw. Even with wooden poles carved spirals, it is difficult to find a log 50 meters long. In addition, the 50-meter-long log is very heavy, and it is difficult to drive it with a steam engine.

As a result, Marin lowered his requirements and only asked for a twenty or thirty meter long screw. In this way, the water in the deep well can be pumped out by the relay of two steam engines.

Next, Leonardo da Vinci, who had just completed the research and development of the Watt steam engine, nervously devoted himself to the research and development of the Archimedes screw pump.

"I'm really tired, I've just got a steam engine, and I'm going to get a pump. By the way, Marlin, after you get it, are you going to vigorously promote the application in the swamps of East Friesland? This kind of pumping machine is much more efficient than the Dutch windmill. Leonardo da Vinci asked curiously. He also doesn't have much respect for Marin, mainly because he hated Marin for forcibly kidnapping him. Later, disrespect became a habit. However, Marin didn't care, after all, Leonardo da Vinci was a bull, a great scientist, and it was nothing to hold at all. Moreover, this product is not an official, so there is no need to follow the hierarchy so much. Because, according to Marin, great scientists are privileged......

"No, Ada, even if you get the steam engine and the water pump, I'm not going to promote it in East Friesland right now." Marin directly rejected Leonardo da Vinci's idea.

"Why?" Leonardo da Vinci was in a hurry. As a great scientist, I like my inventions to be applied in society. In this way, people can also praise his good name.

"Ada, I haven't taken the Ruhr area yet. The Ruhr region is a coal producer. If I hadn't taken the Ruhr area and had taken out the steam engine, wouldn't that have made people sit on the ground and raise the price? Moreover, if I want to buy the Ruhr area in the future, it will be difficult. Therefore, I will not disclose the existence of steam engines until I get the coal land in the Ruhr area. ”

"Well, you better go and take down the Ruhr as soon as possible, I'll study my steam engine and water pump first, and see if there is anything that can be improved......" Then Leonardo da Vinci began to tinker with the machine, and never bothered with Marlin again......