The gear seems simple, but in fact, it has a high jishu content. It is a sign of industrial society. Ancient societies also had gears, whether in China or Europe, there are records of gear systems. But gears in the modern sense originated from the gear involute proposed by the mathematician Euler in 1765. With the basic law of involute gear and tooth profile meshing, high-speed gear transmission is possible, without involute gear, there can be no high-speed transmission, there can be no gearbox, and without gearbox, it is impossible to efficiently use any kind of powerful kinetic energy through industry.

For the cadres of the Industrial Energy Commission, designing most industrial gears is not a problem for them - there are countless industrial jishu materials available, and it is not very difficult to manufacture - they have gear hobbing machines, and even if they don't, several machining maniacs say that KAO machining and casting can also be copied. The difficulty is in finding the right materials.

It is not easy to find the right steel for gears in the metallurgical industry sector of the Crossing Group. Moreover, the quality of each batch of steel is slightly different, and the result of adopting the principle of substitution is that tooth breakage accidents occur from time to time.

Huang Tianyu instructed while repairing it, and it took half an hour to repair it, and he wrote the cards and put them in the toolkit for the damaged gears to take back for analysis. The potato mill began to rumble again.

The potato mill is a big guy with a wooden drum on the Taiwan Iron Shaft, and the wooden drum is densely covered with iron half-eyes. The upper grinding knives are detachable, so that different sizes of knives can be changed at any time to control the thickness of the pulp. This machine may not look good, but it benefits from a strong power support. The processing capacity is 2500 kg per hour. It's an artifact in this plane.

The sweet potato pulp coming out of the potato mill is washed and sifted. The trommel screen made by the machinery factory is used, and the industrial filter in the hands of the traverser is tight, so the silk cloth with about 130 holes is used as the sieve cloth.

After sifting, the starch in the potato pulp flows out with the water to become starch milk, and the rest is potato residue. Potato residue has a number of use values, mainly used to make alcohol, and the residue after making alcohol can also be used as fermented feed.

The starch milk can be precipitated to obtain the finished starch product. The sedimentation designed by Jiang Ye for the starch workshop is a simple process and relatively high efficiency of sedimentation tank separation. The separation troughs are made of bricks, and the inside is pasted with thick "tiles" fired in Fujian export kilns, each trough is 30 meters long, and can process 5,000 kg to 7,500 kg of sweet potatoes every 10 hours.

The starch slurry entering the sedimentation tank is subjected to "slurrying" - this is the traditional Chinese soil method for starch making. The sour pulp mixed into the starch slurry is obtained by fermentation of natural lactic acid bacteria in the starch production process, and the appropriate amount of sour slurry added to the starch milk can promote the rapid condensation and deposition of starch. Starch sinks quickly, deposited at the bottom, and above is a conglomerate of fiber and protein, and the two are clearly demarcated. This process not only accelerates the separation of starch from impurities, but also inhibits the activity of other impurities with lactic acid bacteria.

What is precipitated is starch, and the upper layer is a viscous yellow starch containing impurities. The middle layer of starch is of the best quality, and after taking it out, it is the best starch. The lower layer contains more soil and impurities, which are mixed with the starch of the first layer and then mixed with water and slurry to precipitate to prepare the inferior starch.

Regardless of whether the starch is of high grade or inferior, the moisture content is too high when taken out - up to 50% or more, and it must be treated with water before it can be stored and used. Zhong Lishi designed a simple centrifugal water mower for Leizhou Sugar Company, which was first used by the food factory to try it out. It can drag about 30% of the water, after drying or baking, further reduce the moisture content of the starch to 16%, and then use a mill to roll it into a powder. It can be used in all aspects of food processing and industrial production.

The clarifier in the upper layer of the sedimentation tank is taken out and placed in the water tank, and allowed to ferment into "old pulp", which can be used the next day. The remaining wastewater contains a small amount of starch, and the crude fiber and protein sediment in the wastewater are deposited in the wastewater pond to become potato yoshi. The starch can be extracted after the potato yolk is sieved and precipitated again, and the remaining potato yolk can be used like potato residue.

The process and process flow of the entire starch workshop were made by Luo Duo, but after it was put into production, everyone realized that the starch factory was too water-intensive, and the wastewater discharged contained a large amount of organic matter, which seriously polluted the Wenlan River. So much so that there is a section of the river starch workshop that will be dyed white as soon as it is produced, like washing rice water. Tian Jiujiu is very troubled by this, theoretically, the wastewater of the starch factory can be treated by biogas digester fermentation, but in fact the matter is far from so simple - after all, this is a factory, not a workshop. Almost 300 kilograms of water are consumed for every 100 kilograms of sweet potatoes processed. The amount of wastewater discharged is staggering. Tian Jiujiu had no choice but to continue to use the sedimentation tank for primary treatment, and the precipitated high-concentration wastewater was then discharged into the biogas digester for fermentation, and the cleaner wastewater in the upper layer was directly discharged into the river.

"This level of pollution is enough in the rainy season for the Wenlan River to clean itself, but in the dry season it is difficult to say."

"It's okay, it's close first." Ma Qianzhuo looked at his opinion on the treatment of the wastewater problem and said, "In the future, when the conditions are ripe, Jishu will be renovated." ”

"It's not just about pollution." He continued to plead to Ma Qianzhu, "It's too much water." In order to ensure the water consumption of the sweet potato processing plant, the water plant had to be expanded. ”

Of course, Ma Qianzhu didn't want to expand the water plant for the sweet potato processing plant, so Tian Jiujiu proposed a new plan. Construction of a water recycling and secondary use system in a food factory. The main thing is to recycle the wastewater generated during the potato washing stage. It is reused after precipitation and simple chemical treatment. It is estimated that 40% of water consumption can be saved.

"A basin of dirty water to wash repeatedly?"

"Of course not, it has to be treated, and it is not indefinitely recycled, and the water has to be changed after a few cycles."

The wastewater from washing sweet potatoes mainly contains a large amount of sediment and substances such as sweet potato skins and grass blades. Unlike the wastewater in the starch process, which contains very little organic matter, most of the impurities can be removed by sedimentation, and then reused through a simple sand filter.

However, when Xun Soji came to take over, this device had not yet been seen, and the dirty water used to wash sweet potatoes was drained directly from the drainage channel under his feet.

"How? It's interesting, isn't it? Huang Dashan walked in from outside, Xun Suji just wanted to introduce himself, he shook his hand, "Mo Xiaoan told me, you will be the full-time factory director here in the future." Now I'm going to have an easy time. ”

"Yes." Xun Suji wanted to say a few polite words such as "I will ask you to help more in the future" and "Huang Gong, you worked hard in the previous stage", but he still couldn't say it. Huang Dashan didn't care, and told him about the workshop and production.

"The food industry is a big category," Mr. Huang said, "and since you have a chef's license, you can be regarded as a professional counterpart." ”

"If you want me to make salted duck eggs, it's okay to pickle a dish, I don't understand this at all."

"It's okay, just read more books and you'll understand. Isn't everything here just a book, do you think any of us really have ever worked in a food factory? Not to mention such backward processing equipment. ”

"Is this still behind? The largest starch processing plant in this space-time. As he spoke, Mo Xiao'an also came. Xun Suji knew that this was his direct boss, and wanted to go up and flatter him, but he had never done this before, and he didn't say anything except "Commissioner Mo".

"Tell me to smile and be okay, don't be so polite."

After the starch workshop was put into operation, Mo Xiao'an was here for the first time, and his curiosity about this place was no less than that of Xun Suji. From time to time he looks around,

Mo Xiao'an watched as the slightly yellowed starch was poured out of the centrifuge by the workers. Put it on the bamboo plaques one by one, spread it out, ready to send it to the drying room to further haul the water, and said:

"It's an amazing feeling. What was originally a strange shape and muddy sweet potato has become snow-white starch in the blink of an eye—" he suddenly asked, "Weishenme starch is not white?" Is it yellowing? ”

"It's not bleached." Huang Dashan explained that in the modern starch industrial production, starch is bleached, "in fact, it is not difficult, it can be bleached with bleaching powder and water." In addition to being a little better, it is useless, and there are several more processes, which is not counted. ”

"Drain it!" With the shouting of a worker, there was a huge whimper of water in the workshop, and a large amount of waste water gushed out of the potato washer and instantly filled the drainage canal of the workshop. The water was very fast, and some even rushed directly to the ground, and Mo Xiaoan's trouser legs were wet.

"You should wear rain boots to the food factory." Huang Dashan looked at their shoes, shook his head, and took care of a worker a few times, and the worker brought two pairs of strange boots, which looked like they were made of cloth, but **.

"This is a high-quality rain boot cover made of tung oil cloth, you all put it on, and you will use it in the workshop later."

Put the rain boot cover directly on the foot, and it has a strap on the instep and calf to tie it tightly, so that there is a pair of "high-top rain boots". This kind of shoe cover is made of tung oil cloth. The crossing group is now unable to supply rubber rain boots, and some liquids in industrial and agricultural production are not directly accessible to the skin. The result is a kind of earthen rain boots, which are often used by the natives with sandals tied to their feet on rainy days.

Several workers began to take the sweet potatoes out of the potato washer and put them into large baskets. Some of them are sent to the potato mill to be beaten, while the rest are carried to another large machine.

"It's a dual-purpose machine for slicing and gratering." Huang Dashan introduced, "It is specially used for slicing and grazing sweet potatoes. ”

"What's the use? Isn't it possible to beat the pulp directly? Mo Xiao'an said strangely, "Are you still going to make Liancheng dried sweet potatoes......?"

Xun Suji thought: Is it to dry it and preserve it?

"Let's make shredded potato rice or something." He said.

This thing was suggested by Wang Tian to Wu Nanhai, and it was eaten by the local poor peasants, tenants, long-term workers, and all the thrifty landlords who kept their families and gentry.

"The meaning is similar, but the effect is different." Huang Dashan explained. The slicing grater is for easy drying. Dried potato chips, shredded potatoes can be stored, of course. But the main purpose here is to grind the dried potato flour.

Potato powder is different from sweet potato starch, in addition to starch, it also contains the fiber in sweet potatoes, which is not good when used to make food alone, but can be used as a food filler to mix in various flour foods to reduce production costs. Just as corn flour is widely used as a filler in the modern food industry. As long as it is not excessive, the average consumer will not feel it.

"Now there is no flour, otherwise it can be miserable in it, making bread, noodles, biscuits or something can save 30~40% of the amount of wheat flour."

"It's darker than opening a restaurant." Xun Suji couldn't help but say.

"There's a lot of shady stuff in the food industry." Huang Dashan smiled, "Have you ever eaten maltose?" ”

"I ate it when I was a kid."

"Sometimes I use it when cooking."

"Maltose is a commonly used ingredient in the food industry. However, very few maltose on the market is made of malt, and most of them are sweet potato maltose, 5 kg of maltose with 100 kg of sweet potato. ”

"It's a pity that maltose can't be used as an export product." Mo Xiaoan never forgot this stubble.

"Maltose can't be sold for a few bucks, and the batch is not large."

Xun Su Ji remembers the experience of being a cook: "I remember that dried sweet potato powder can be made into vermicelli and flour skin. ”

"Yes, but the vermicelli made from pure dried potato powder is terrible and lacks toughness. The taste is far inferior to mung bean vermicelli, so it's better not to do it for the time being. ”

"How about using it in rice noodles? Mix a little bit into it as if it were in flour. Xun Suji remembered that the local rice noodles are a common food, whether it is a soup or a dry mix, it is a delicacy for ordinary people.

"It should be okay to use it less." Huang Dashan thought about it, "But the food factory really hasn't made rice noodles." ”

"Rice noodles are easy to make." "I used to make it when I was in the cafeteria, and the rice could be made by taking it to the mill and grinding it into flour. ”

"Wait," Mo Xiao'an thought about, "Isn't rice noodles just an export commodity?" ”

"Export dried rice noodles?"

"That's right," Mo Xiao'an took out a small notebook from his pocket, "Mr. Wen said that the mass consumption power of this time and space is low, and most people are in the most basic consumption state, that is, there is more demand for food and clothing. I think about it, there are certain processing requirements for dried rice noodles, and many people still buy ready-made ones and go back to make them-"

"There is no difficulty in processing rice noodles, I think most farmers make their own noodles."

"The focus of dried rice noodle sales should be in the city, facing urban residents." Mo Xiaoan said, "Mr. Wen once taught us: from ancient times to the present, the main consumption power of society is concentrated in the city. It is even more impossible to expect farmers on this plane to buy our commodities. In the Qing Dynasty, there were also cut noodle shops in the city of Beijing, specializing in cutting noodles and selling them - what do you say is the difficulty of cutting noodles? ”

"It's kind of interesting."

"There should be many stores in Guangdong that make and sell dried rice noodles, but they can't compare to us in terms of cost. Dumping them directly at a low price can crush them! ”

What are the cost advantages of the traverser? Mo Xiao'an analyzed, first of all, Mi Yuan. The traversers used cheap rice from Vietnam that had been bartered in sugar. There are dozens of tons of batches each time, although there is a cost of freight, but there are still obvious advantages in amortizing the cost.

The second is to mix cheap dried potato flour into the dried rice flour, and implement the idea of "cutting corners to make cheap products" of modern businessmen. It's hard to say exactly how much can be mixed into the dried rice noodles, but if 20% can be added, the reduction in material costs is amazing.

zuihou is the cost of production. The cross-cutting group uses large-scale industrial production, and its cost advantage is far from comparable to that of small handicraft workshops.

The biggest cost of crossing the group is the transportation costs, but most of the ships returning to Guangzhou from Lingao are now empty, and these spaces are just right for exports. Shipping costs won't increase much.

All things considered, I'm afraid that as soon as "Lingao Dried Rice Noodles" is listed, the rice noodles market in Guangzhou will collapse.

"There is a theory of water flow in marketing," Mo Xiao'an said, the more excited he became, "just like water, cheap goods have a tendency to spread automatically." Without us engaging in too many sales activities, dried rice noodles will quickly expand to major cities throughout Guangdong! ”

"And our rice noodles are cleaner and more hygienic than traditional handmade rice noodles and contain fewer impurities. The moisture content is also low, and the use of preservatives and other means is much better than other rice noodles in terms of appearance and shelf life—"

"That's a good idea." Huang Dashan hesitated, "There are new ideas, but it involves the issue of grain exports." The Executive Committee has first-class control over grain, and it is strictly forbidden to export. ”

"Now there are a lot of imports of Vietnamese rice, so the reserves must be abundant."

"It's hard to say." Although Huang Dashan's administrative position is not high, he has come into contact with the people's commissars at the level of the executive committee, and he has heard a lot of internal information: "The Governor has recently held several grain work meetings of the Planning Commission, and he still has a very tight grasp of grain procurement and reserves. ”

"Really?" Mo Xiao'an was immediately deflated. This is reflected in the recent construction of new migrant villages, the expansion of quarantine camps, the 24-hour full capacity of timber processing plants, cement factories and brick kilns, and the recent orders for clothing and bedding received by the Ministry of Light Industry.

"The dried rice noodles are put into production first, after all, they are easy to store, and they can change the tricks for everyone to eat." Xun Suji is not interested in the grand jihua of "Lingao Rice Noodles Sweeping the Market", but rice noodles are indeed very popular in the cafeteria. "You can also make instant rice noodles, so you don't have to run to the cafeteria to eat when you want to be hungry

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