Tap water must have pipes and taps.

The water pipe is good to say, the bamboo pipe, the pottery pipe and the iron pipe can be, and there is no shortage of materials and production methods at present, but the faucet is still a little problematic.

Because the faucet can be regarded as a precision equipment, in order to achieve no leakage after closing, it is required to ensure that the internal structure can not have the slightest gap, and must reach the degree of closure at the molecular level, this degree of precision is definitely a very big challenge for the casting process of Daqin craftsmen at present, so for the traditional ball valve faucet in later generations, Chen Xu does not have much hope, what he needs now is the simplest switch, because the height of the water tower will not exceed ten meters, The water in the water tower is only a few tons at most, and the water pressure generated is not too large, as long as the simple waterproof measures will not run and drip everywhere, so the requirements for the faucet are not high.

However, even if this equipment is not high, Chen Xu is still not too sure, after all, in this fucking era, many things are easier said than done, and it is even more difficult to do well, such as a steel ball bearing, the design has not been successful for several months, because the precision requirements for collars and steel balls are too high, and the slightest gap and spacing error will lead to unusability, so although several bearings of different sizes have been made, the appearance looks decent, but in fact, it has not yet reached the application stage. It's easy to shake the shelf during rotation.

After returning to the Academy of Sciences, Chen Xu instructed Sun Shujiong to find a few craftsmen who were good at organs, explained his requirements, and also drew a sketch of a faucet to explain the principle.

Several craftsmen began to meditate on their beards and hair, and after a long time, an old craftsman with gray hair said: "Master Hou, it is definitely not easy to cast the faucet you said with copper and iron, because the copper and iron are too hard, as long as there is the slightest gap, it will leak, but my subordinates have made a kind of ditch sluice before, which is made of wood and stone, I will draw it for you to see, if it is feasible, make this sluice much smaller, it should be able to block the water of the water pipe......"

"Go get chalk and a little blackboard!" Chen Xu raised his hand and ordered, and a scribe hurriedly went to bring a small blackboard and a box of round strips of chalk.

The blackboard is simple, that is, the polished and flat wooden board is brushed with black paint, the chalk is made of gypsum and a very fine white clay mixture, this thing Chen Xu just casually mentioned, so the Academy of Sciences soon had craftsmen with gypsum powder and a kind of white clay to make it, after repeated improvements after several times, the writing is basically not much different from the chalk of later generations, and now the Academy of Sciences and various workshops have begun to popularize the use.

The old craftsman picked up the chalk and quickly drew a sketch of the sluice gate on the blackboard.

"Hou Ye, you see, your drawings are required to install a hemispherical device in the center of the water pipe, and rotate the hemisphere left and right to play the role of opening and closing, but because the hemisphere is not easy to cast, and there will be no gap between the casting and the water pipe, the natural airtightness is not good, the structure of this wooden gate I designed before is simple, once the wooden gate is closed, the canal does not leak, so I think the hemisphere valve in the middle of the faucet that Hou Ye needs is changed to a sluice, Hou Ye, you look here......"

The old craftsman pointed to the center of the faucet on the drawing, "We only need to cast a square cabin, the two sides of the cabin are the water entry and exit channels, I put the wooden gate into the square cabin after designing, and design a handle that can be moved up and down on the gate, lift the handle up, the gate knife lifts the water and naturally flows from below, press down the handle, and the water is naturally cut off when the gate knife falls......"

"Hey, you're doing this easily!" Chen Xu naturally understood when he heard this, the structure was not complicated, and it was much simpler than his hemispheric device.

The old craftsman's design was affirmed by Chen Xu, and he immediately became excited and said, "Master Hou, this kind of wooden gate can be big or small, and the workmanship is not complicated, but you need to use wood that will not swell too much when exposed to water, and in order not to be too easily damaged, the harder and finer the wood texture, the better!" ”

"No, no, you don't need to use wood at all, just iron and copper!"

After Chen Xu understood the structure of this faucet at this time, he naturally had a new idea, and drew a new faucet style with a few clicks of chalk on the blackboard, the style was similar to that of the old craftsman, and then designed a new handle in the middle of the wooden gate, and the new handle was connected with the gate knife: "See, there is no wooden gate here, just cast an integrated handle with iron, and the fixed part of the wooden gate placed in the cabin is reduced, and in order to seal, you can use cowhide as a waterproof mat......"

Chen Xu only made a small change in the old craftsman's wooden gate, but it reduced the manufacturing difficulty of the wooden gate by more than half, the reason why the wooden gate will not run and drip is that the wood has a certain elasticity, which is equivalent to forcing a piece of wooden wedge into a gap, plus swelling in the water, so that the close contact between the wood is used to completely block the water, which is not possible with hard copper and iron, mainly because the current process cannot reach such a precise point.

"Yes, yes, the cowhide is soft and swollen when it encounters water, so that the iron gate knife can also be tightly fitted with the cowhide, and naturally it will not leak, which is much simpler than the pure wooden gate, and it is labor-saving, Hou Ye is really smarter than us......"

Several craftsmen hurriedly patted their ass.

"Okay, you guys design it yourself, see what to do, it's easier and more convenient to make, I just need to be able to use it, and it's best to look as exquisite and beautiful as possible!" Chen Xu shrugged his shoulders and dropped the chalk and said, "By the way, what's your name, why haven't I seen you before?" ”

"Back to the Hou Ye, my subordinate is called Lu Erdan, a month ago, Lord Zhao brought me from Changsha County to build the dam outside the city, but the water rose in the summer, and the dam was stopped, and Lao Er had nothing to do all day."

Chen Xu's cheeks twitched a few times and said, "Lu ...... Erdan, well, the name is good, this kind of faucet will be named Lu's faucet in the future, design and produce it as soon as possible, and then go to the financial office to receive a reward of 2,000 yuan! ”

"Multi-...... Thank you Hou Ye, my subordinates will not let Hou Ye down! Lu Erdan's excited words were almost trembling, and several other craftsmen also showed a look of envy and jealousy on their faces, and their eyes were very red.

Such a simple faucet rewards 2,000 yuan, which is really a heavy reward, enough to feed a family of five to feed and clothe for several years.

After getting the faucet, Chen Xu walked around the various laboratories of the Academy of Sciences again, and found that some were in a daze, some were writing and painting, some were grinding and building, some were chatting and farting in an issue, and some were actually drinking tea and reading newspapers, and there were even two guys playing chess crackling, and most of them looked idle.

Chen Xu felt a little pain in his heart, but this is also a helpless thing, the purpose of the Academy of Sciences is to convene some outstanding craftsmen in all walks of life to create and play by themselves, to see if they can research anything good, and Chen Xu will also take the time to explain some basic knowledge of physical chemistry and other disciplines on weekdays, and put forward some simple applications such as scientific concepts in later generations, but after all, the limitations of civilization in this era are too great, and these craftsmen who sit in the office and think are far less advanced than those craftsmen in the factory.

As the saying goes, practice makes true knowledge, Chen Xu frowned and instructed Sun Shujiong to inform all the craftsmen and craftsmen of the Academy of Sciences who were proficient in architecture, institutions, water conservancy, and even bridge and road design to gather in the conference hall for a meeting, and he himself returned to his office to write and draw, and quickly got a few pieces of manuscript paper.

The conference room is not big, designed like a classroom in later generations, with rows of long seats, about able to sit more than 100 people, directly in front of a podium, a blackboard with a length of one zhang and six feet wide hanging on the wall, there is also a lectern on the podium, and the lecture is placed with chalk, chalk erasers, wooden triangular rulers, rulers and protractors.

The people who came to sit one after another whispered, I don't know what Hou Ye suddenly called everyone to a meeting?

However, it seems that since the death of Princess Qingning, Hou Ye has not come to lecture, and everyone has a little expectation, because every time Hou Ye lectures, it is full of all kinds of unbelievable and novel ideas, and many of the principles described are incomprehensible but irrefutable.

When Chen Xu walked in, the conference room was buzzing with the sound of exchange and discussion, and when they saw Chen Xu coming in, everyone quickly shut up, and then stood up and saluted together.

"Excuse me, please be seated!" Chen Xu waved his hand and put the manuscript paper in his hand on the podium, and then his eyes swept over the group of craftsmen and craftsmen below who were about sixty or seventy years old and about twenty years old, and said with a calm face: "I suddenly summoned everyone here today because my annex outside the city is about to be completed......

After everyone sat down, they all looked at each other, and they all guessed what Hou Ye meant when he said this, could it be that he moved to a new house and asked everyone to get together to congratulate him?

So in an instant, a few flexible minds had already stood up, "Master Hou moved to a new house, I will definitely prepare a gift to congratulate!" ”

The others saw that something was wrong, and they didn't pat their farts at this time, so everyone who had just sat down stood up and saluted, saying that they would prepare gifts to congratulate the Hou Ye on moving to his new house.

Chen Xu was full of black lines, and then he didn't speak, picked up the triangular ruler and began to draw on the blackboard, and soon drew a diagram of the water supply pipe, and each part was clearly marked with the water tower, water pipe, kitchen, bathroom, toilet, and even bathtub, sink, toilet, faucet, etc.

Everyone sitting below was confused, and while watching, they began to discuss with the people in front and behind.

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