Chapter 273 Oil Mill (Please vote and subscribe)
The first windmill was built next to the blast furnace, with two windmills installed on it, one to power the forging hammer and the other to power the stone mill, allowing the Han tribe to continue grinding ore powder in winter.
The cold wind was raging on the land, but many members of the Han tribe were shivering in the cold wind, and they came over to watch the two windmills.
The big windmill was turning, and the scenery here was really beautiful, the sky was beautiful, the land was beautiful, and there was a group of happy friends.
"Wow, mother, mother, look, that windmill is turning so fast, the chief is so powerful, he can even make such a thing." Qubing, who was wrapped like a plush toy, jumped in front of the windmill and shouted to his mother.
"Yes, you are still young. You should learn more from the chief in the future. Then you can help the chief. Maybe you can also research something yourself. Mother knows that the chief rewards the tribesmen who invent things very highly. If you can also make something powerful in the future, maybe you can also wear a tin crown like that and become a captain or something." Qubing's mother also rubbed his head to encourage him.
"Well, I know that the chief taught us to learn Chinese characters. I studied very hard. The chief praised me for being smart. I will definitely be as powerful as the chief in the future." Qubing said seriously, with his eyes full of confidence and fighting spirit.
The windmill ran for two days, very smoothly, without any malfunctions. The tribesmen gradually calmed down from their initial interest. Only some children with nothing to do would occasionally run out to watch.
After the trial run, Luo Chong immediately issued an order to continue building windmills. This time, it was still the same two groups of windmills, but they were built for the carpentry group, which was also the wood processing plant of the Han tribe. Relying on the power of the windmill, several wind-powered sawmills were made, which could greatly speed up the production of wood products, and save more low-level manpower from the carpentry group, freeing those apprentices who only knew how to saw wood to do other things.
The structure of the sawmill is not very complicated. It just converts the circular motion of the windmill into reciprocating motion through the crankshaft, driving the saw blade to pull back and forth to achieve the purpose of sawing wood.
It is necessary to mention here that the saw blades of the sawmill are all made of steel, all of which are long saw blades of the same specifications, not circular saws, because if you want to make the speed of the circular saw reach the speed that can saw wood, it is more difficult to rely on windmills and gearboxes alone, and the circular motion will definitely cause a large amplitude of shaking, so it is impossible to saw flat wood, so Luo Chong finally decided to use saw blades that move up and down.
There are four sawmills in total, and each windmill drives two of them. Two of them are specially used for sawing wood boards. A vertical tool holder is installed on both sides of the windmill main shaft. The tool holder is a frame-shaped frame that can be vertically installed with a large row of saw blades. The spacing of the saw blades can be adjusted according to the thickness of the required wood board.
The linkage device of the saw blades divides all the saw blades into two groups. Group A and Group B are installed alternately. When working, one group is up and the other group is down. As long as the log is pushed into the tool holder, the wood board will come out from the other side. It is very labor-saving. Only two or three people are responsible for watching the machine and sending wood into it.
The other windmill is connected to two single saw tables, which are divided into upper and lower layers. The lower layer can be used to cut thick logs, and the upper layer can be used as a table saw to make some special wooden strips or wooden squares, or use a ruler to saw out shapes that meet specific angles.
Of course, there is a reason for building this wind-powered wood processing plant first. The residential houses of the Han tribe still have no doors and windows. The reason is that no one has time to saw so many wooden strips.
But after the processing plant is built, with the rapid output of basic wood, the Han tribe will be able to quickly process furniture, ships, vehicles, and wooden machinery.
After instructing a group of blacksmiths to make saw blades and instructing the carpenters on how to make sawmills, Luo Chong soon became busy with other things, that is, making oil pressing equipment. The Han tribe currently has so many oil fruits stored, but there is no pressing equipment to produce them. Seeing that there are more and more wooden products, but the tung oil used as paint has not been found, so the research and development of pressing equipment has also been put on the agenda.
The process of pressing vegetable oil is basically the same. First, grind the fruit containing vegetable oil into powder, then fry it in a crucible, and then wrap the fried powder with cloth or grass. Finally, through physical pressing, the oil contained in it is squeezed out. In this process, the most important thing is pressing.
If you want a high oil yield, you need a strong enough pressure. If you want to increase the pressure, there are only two ways. One is to increase the counterweight to increase the pressure, and the other is to reduce the force area to increase the pressure under the same counterweight. Such simple physics knowledge is learned in junior high school, and Luo Chong has no problem using it.
The pressing equipment was built in a new warehouse built by the slaves. Luo Chong named it the Oil Mill. The Oil Mill was divided into three areas, processing three different vegetable oils, one is peanut oil, the second is tung oil, and the third is lacquer oil.
Similarly, each area has an independent stone mill, stove, wok, and oil press. Although it seems wasteful, it is very safe. After all, tung oil is poisonous and it is impossible to use the same equipment as peanut oil.
In addition, although lacquer oil can be eaten, its seeds grow from lacquer grass after all, so lacquer oil has other uses, such as using it as ink oil. This lacquer oil supplemented with other ingredients can be used to make ink specifically for printing books, which is more important than tung oil and peanut oil.
The structure of the pressing equipment is also very simple. First, a bronze vertical cylinder with a hole at the bottom and a diameter of 40 cm is cast with bronze. Then a lever-type pressure hammer is made of a huge wood on it. It can be raised and lowered with ropes and pulleys, or bricks can be hung on the huge wood to increase the weight of the pressure arm, so that the oil press workers can flexibly control the pressure.
In late February in winter, when Luo Chong was instructing the tribesmen to build the oil mill equipment, the gloomy sky snowed again. This time, the heavy snow lasted for a whole day, and the thickness of the snow in the city square reached one foot.
Such heavy snow is nothing to the well-prepared Han tribe, but it is extremely difficult for those small tribes with only dozens of people. The lack of food and fuel forced them to go out.
In previous years, when they encountered such a situation, they usually went out hunting, but this winter they had a new choice, that is, the market of the Han tribe. Although they didn’t know whether it would be open in winter, they could only go there to see if it was open. Maybe it was the hope of survival? !
(End of this chapter)
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