"The villain looks at this thing should be made of wood, but I don't know its function...... Peng Da and Hong Tao have cooperated the most, and they have been mentally prepared for this thankless result, and they have recovered the fastest emotionally, and they took the lead in choosing between the three drawings.

Although each of the three drawings was so strange that none of them could be understood, his work in woodwork made him make the right choice.

"This thing is called a foot blower, and its function is similar to that of a water drain, but it is smaller and more efficient than a water drain."

In the Song Dynasty, there were generally two kinds of smelting and combustion equipment, the large one was called the water drain, which was a series of bellows pushed by hydraulic power, and the small one was a leather bellows or bellows.

The air pressure and air volume of these two types of blower equipment are insufficient, and in order to increase the temperature of the furnace, the amount of oxygen must be increased, and the blower is the easiest choice. Not an ordinary bellows, but a centrifugal blower.

It is composed of two parts, the power system at one end uses a human pedal to drive a large flywheel with a diameter of one and a half meters as the power input to drive the power wheel to rotate, and then drives the shaft fan blade in the snail bellows to rotate through the belt transmission mode.

In addition to the fan shaft is made of steel, the blower is basically made of camphor wood and pine planks, with simple structure, large unit air volume, simple installation, disassembly, maintenance and repair, which is most suitable for blacksmith shops and small ironmaking furnaces.

When in use, the flywheel is driven to rotate by standing and stepping on the pedal to obtain power, which is more efficient than hand-pulled bellows, and can effectively increase the furnace temperature under the premise of saving manpower.

There is no need to test this, when the Jinhe Empire first developed the smelting industry, all earth blast furnaces used this kind of blower, but after amplification, they were driven by water wheels.

In fact, this centrifugal blower can be driven by manpower, animal power, wind power, and water power, and if there are metal bearings, it can also use the pot camel machine and the motor as a power source, and the efficiency is higher.

This thing is not Hong Tao's invention, it was very popular in China in the fifties and sixties of the 20th century, and it can be found in every village during the large-scale steelmaking, and it is also a compulsory course for many professional and steelmaking engineering students.

It is not difficult to manufacture, but the design must be particular, the key core components are the ratio of the large flywheel gear and the power wheel gear, as well as the ratio of the diameter of the power wheel and the driven wheel. If these two data are not calculated clearly, the purpose of labor-saving and efficient will not be achieved.

Hong Tao didn't calculate it alone, to be honest, relying on this bit of ink in his head, it was really not easy to figure out the relationship between air volume, air intake, speed, and gear ratio.

Even if you learned a lot of knowledge at the time, you will forget it if you don't use it for decades. Fortunately, he still remembered the wisdom of the craftsmen of the Golden River Empire, so don't create it yourself, just copy it.

The gear ratio of the large flywheel and the power wheel is 4:1, the speed ratio of the power wheel and the driven wheel is 1:4.4, the fan wheel diameter is 54 cm, the width is 15 cm, the diameter of the air outlet is 8 cm, and the length of the air outlet pipe is about 30 cm.

However, the tooth ratio processing drawings of the two gears have to be calculated by themselves, and Hong Tao stayed up in the study for two days to get it out for this thing. The ancients said well, the book is hated when it is used. I usually brag about it and my mind is full of data, but when I really want to use it, I find that every data is not accurate.

"The villain wants to use wood to make a wheel fan first, and if it can be used and then replace it with brass, what does the official think?" Peng Da must not understand the principle explained by Hong Tao, but he can still understand the conclusion, but he doesn't believe in this conclusion.

"It's okay, we're not rich yet, we can save it." Hong Tao didn't expect to say anything to others as a golden rule, trust between people needs to be cultivated, and blind worship is even more undesirable. Bold questioning and careful verification are the attitudes of technology.

"I don't know if the official painted it is a shochu pot?" Seeing that Peng Da received a new job, Wang Dalang, the copper craftsman on the side, was a little embarrassed. They are all the same masters, and people dare to take on the work, is their craftsmanship inferior? Absolutely not!

"Oh? Big Head Knows This? ”

Wang Dalang's name is a crime of Hong Tao, and his nickname in this life is Dalang, also surnamed Wang. But there are several people named Dalang in the house, especially this Wang Dalang is the most hateful. But he is not an emperor, and he is not qualified to let others avoid it, so he can only give others nicknames.

Wang Dalang was less than forty years old, he was a short and fat man, but he had a head comparable to Wang Dali, so his name in the mouth of the horse became Wang Datou.

As for whether he likes it or not, he has never asked for anyone's opinion. Just called, dare not agree to a try, and immediately let the wasp give you an injection!

"There is a shochu pot in the official Shangjiu Bureau, which is made for soju with copper tires and copper bones. However, the official is much more complicated than the shochu pot, and the villain is just guessing......"

Wang Datou was quite modest and didn't dare to say that he recognized it. However, he squatted on the ground and drew a sketch of a soju pot with his fingers, which was indeed somewhat similar to what Hong Tao had on his drawings.

"Why isn't the official's soju sold?" Hong Tao really didn't know that the Northern Song Dynasty already had highly distilled liquor, because the Southern Song Dynasty didn't have it, and there were so many restaurants in Kaifeng City, and there were no such liquor for sale.

"Shochu is extremely strong and spicy, and consumes a lot of food, and it is no longer used after steaming and brewing in the Shangjiu Bureau."

Wang Datou's big head is not long in vain, it is really not empty inside, and he knows a lot about things in the palace. The Song people didn't like the taste of high wine, and the emperor thought that it was too expensive to make wine like this, so he simply strangled it in the palace.

Why didn't the Southern Song Dynasty, don't ask, it must have been forgotten when you crossed to the south. The hometown was lost, the palace maids, eunuchs, craftsmen and so on died and fled, and Jin Guo took a lot of them, and there are few estimates who can remember the past hundred and ten years of the previous dynasty.

In fact, there are many technologies in ancient China that have been lost due to dynastic changes and wars, and we really don't care as much about this as Europeans.

Although their church is also very different, and they do all kinds of evil in cheating, abduction, and deception, they still have merit in faithfully recording historical materials. Without the Church, it would have been difficult for European technology to be systematically preserved.

"That's right, the official and I are this is a shochu pot, but it's better than the official's pot. Don't be afraid, I don't want to brew moonshine, but I want to use wine as medicine, and I can live countless lives. In the future, I plan to call this kind of medicine official Datou Shui, what do you think? ”

Since the distillation kettle is no longer a too new object, Hong Tao will no longer give Wang Datou a little bit of detailed technical details. The size is on the drawing, and I know what it's for, so let's think about it slowly. What he can give him is a false name.

"......" Wang Datou smiled very embarrassedly, saying that he was not happy, but the big head was also his nickname, and he couldn't say that he didn't have anything to do with it. But if you want to say you're happy, this name really doesn't have any sense of honor, even if it's called Da Lang Shui, it's better than the big head.

"Don't be shy, hot pot is not worth mentioning compared to this thing, why don't you change it to a big pot?" Two of the three things have been settled, and Hong Tao's mood is a little happy. As soon as he was happy, someone else must have been unlucky, and this time Wang Datou caught up.

"No, the villain is willing to call the big head water...... "Wang Datou heard it, yes, the big head pot is not as good as the big head water, depending on the meaning of the horse, you have to choose one, then it is better to choose the lesser of two evils.

"Hee-hee-hee...... Hahaha...... Hehehe...... "The craftsmen and Lian'er on the side can see it, and the colt is making fun of people again." But it's really funny, and even the Wasp, who has always been unsmiling, can't help but twist his head to the side.