Jiang Laogan and Niu Dali had previously done the plastering of the reservoir, this time with the cement prefabricated board, it is easier to build a few more sinks, except for the first sink, which is not experienced to build thicker, although the cement prefabricated slabs of the back several sinks have not changed in length, width and height, but their thickness is half thinner, but it is also the same strong and reliable after testing.

There is a drainage hole in the upper left corner of each sink, which is also reserved when making prefabricated panels, and after the sinks are built, they are installed with suitable floor drains, glued with glass, and then connected with a drainage hose below.

The use of floor drain is particular, for example, in general, the straight-through floor drain should be used, and the water-sealed floor drain should not be used. In the kitchen and bathroom, the floor drain pipe should have an S-shaped trap, and the balcony floor drain should have a P-shaped trap with an inspection opening.

The floor drain is also installed with a filter similar to the filter screen in the thermos cup, because if there is no object on the drain hole, then when washing vegetables, dishes, and clothes, it is easy to drop vegetable leaves, chopsticks, rice grains, hair and even other objects into the hole, resulting in the sewer blockage of the sink.

The drain pipe of the sink does not directly discharge the water to the ground, so that the sewage will flow sideways, so Huangshi asked Niu Dali to dig a drainage ditch around the perimeter of the dormitory.

The professional requirements of the drainage ditch are specially noted by Gao Ge to Huangshi, because the drainage ditch design is one of the water supply and drainage design, and the specific construction operation is also completed by the water supply and drainage professionals of the construction equipment project, and the design of the drainage ditch should take into account its width, depth, slope and direction.

According to the design drawings provided by Gao Ge, the drainage ditch is 50 minutes deep, the upper mouth width is 50 centimeters, the bottom is 30 centimeters, and it is in the shape of an inverted trapezoid. Originally, Huangshi also wanted to use stainless steel shelves to cover the ditch, but when he thought about the dense silver shining stainless steel horizontal bars, it was estimated that it would be too luxurious for the people on the island to look at, so he replaced it with this cheap cement product.

As for how to build and how to plaster, Niu Dali and they have rich experience, and soon, in the first week after Huangshi left, they had already dug the nullah, and built the bricks, and then plastered them with the prepared cement mortar.

After a few days of cement drying, these sinks were put into use, which made it easier for everyone, and everyone no longer had to run to the rows of sinks in front of the restaurant to clean, and they could enjoy the tap water service at their doorstep. However, the only fly in the ointment that Niu Dali felt was that it was also a silver faucet, which could not produce hot water like the bathroom and kitchen of the model house.

……

In addition to the "water dispenser" and "air purifier" in the living room, Niu Dali felt that it was not necessary, and some other household electrical appliances completely subverted some of their concepts, they all felt that if the laundry and cooking work had these magic tools to do, then what else could people do.

Just like they saw a "washing machine" in the bathroom, the same milky white shell like the refrigerator case, but it was short and fat, one meter high, half a meter long and wide, with a green plastic flap on it, and then there were a few flat buttons in the front, and when the flap was opened, there was a silver metal bucket inside, with some regular holes on the sides, and at the bottom of the bucket was a white disc with 4 protruding rib lattices.

That day, they heard Hong'er say, "This is a fully automatic washing machine, and I heard the chief say that there is also a fully automatic drum washing machine in the upper realm." ”

However, Huangshi didn't show Hong'er the coloring page of the drum washing machine, so she didn't know what the washing machine looked like, but the head of the washing machine asked her to take the changed clothes and throw them inside, and added a kind of "washing powder" to it, then turned on the faucet at the water inlet, and then pressed a few operation keys on the control panel.

After that, the water rushed out of the inlet pipe, and after a while, I heard a "click", and the water stopped, and then through the plastic flip cover, I saw the water-soaked clothes, as if there was a pair of hands grasping them underneath, and they rotated back and forth.

"Chief, can this be washed?" Hong'er looked at the washing machine, where the clothes were tumbling up and down with the flow of water, stirring up many small white splashes.

"Yes." Huang Shi nodded, in fact, the principle of the washing machine is quite simple, it is to use electricity to drive the internal device of the washing machine, and imitate the action of washing clothes by hand, scrubbing or hammering back and forth, and with the decontamination ability of washing powder, the clothes can naturally be washed.

"However, there are some things that look like oil stains, so it's better to rub them with your hands first." Huang Shi thought for a moment and came to a twist. After all, those dark oil stains can't be washed in the washing machine, so you can only apply dish soap to the oily parts when the clothes are dry, or immerse the polluted part of the clothes in hot water at 60 °C, take them out after a while, sprinkle a small amount of alkali powder and the same amount of washing powder, scrub them by hand, and then put them in the washing machine to wash normally, which can remove the oil stains.

"Oh." In this way, Hong'er snuggled in Huangshi's arms, quietly watching the washing machine go through several processes of cleaning, rinsing, and dehydration, and then made a wonderful and pleasant sound, and then saw the power switch "poof" pop.

Hong'er saw that the barrel of the washing machine was completely unmoving, so she asked Huang Shidao, "Chief, this is done." ”

Huang Shi nodded and replied, "It's washed, Hong'er, you take out the clothes and take a look, the dirty places have been washed?" ”

"Hmm."

Hong'er picked out a piece of clothing from the washing machine, which was a little dirty, but when she shook it open, she found that the stains on it were all gone, and she turned it back and forth, so she said, "Chief, this really needs to be cleaned." ”

Huang Shi saw her laughing happily, and laughed happily, "Silly girl, of course, why else would you invent a washing machine just to be able to wash your clothes?" ”

Hong'er put the clothes in front of her nose and sniffed them, attracted by the fragrance on them, felt that these clothes were washed very clean and refreshing, and turned around and asked Huang Shidao, "Chief, by the way, you said before that Edison Daxian is the most powerful inventor in the upper realm, so did he also invent this washing machine?" ”

Huang Shi did not expect that in his speech at the ceremony to celebrate the electrification of Dongluo Island in a small park not long ago, when he mentioned the discovery of electricity, the invention of the generator, and the invention of the electric light, he mentioned the names of several scientists and inventors, and at that time he said that Edison was one of the greatest inventors, and this was remembered by Hong'er.

"Of course not." After Huang Shi said this, he wanted to recall who first invented the washing machine, but unfortunately the invention of the washing machine was not an epoch-making invention like the electric light and steam engine, and naturally it did not leave traces in history textbooks, so he really couldn't remember who the earliest inventor was.

He only remembered mentioning in the "History of the Development of Science and Technology" that the first washing machine was made by an American in Pittsburgh in 1858, and it was the first washing machine in the world, but the main part of this washing machine was a round barrel, and then the barrel was equipped with a straight shaft with paddle-like blades, and the shaft was rotated by shaking the crank connected to it.

However, this washing machine was not widely used because it was laborious to use and damaged clothes, but it marked the beginning of washing with machines. The following year, a washing machine with a pestle as a stirrer also appeared in Germany, and when the pestle moved up and down, a wooden nail equipped with a spring acted continuously on the clothes.

In 1874, another American invented the wooden hand washing machine, which was very simple to build, which was to install 6 blades in a wooden cylinder, and use a handle and gear transmission to turn the clothes over in the cylinder, so as to achieve the purpose of "cleaning clothes".

The advent of this washing machine has inspired those who are thinking hard about improving the efficiency of their lives, and the process of improving washing machines has begun to speed up considerably, so the "hand washing era" has been challenged like never before.

By 1880, steam washing machines appeared in the United States, and steam power began to replace manpower. And 30 years later, in 1910, the Americans successfully trial-produced the world's first electric washing machine in Chicago. The advent of electric washing machines marks the beginning of the automation of human housework.

Then, in 1922, a company in the United States transformed the washing structure of the washing machine, changing the dragging type to the agitator type, so that the structure of the washing machine was fixed, which was the birth of the first stirring washing machine.

Ten years later, in 1932, another company in the United States announced that they had developed the first front-loading drum washing machine, which washed, rinsed, and dewatered in the same drum. This means that electric washing machines have taken a leap to a new level and a big step towards automation.

Later, the first "front-loaded" automatic washing machine came out in 1937, followed by the development and introduction of a jet washing machine in the United Kingdom, which relies on the strong vortex generated by the running wave wheel on one side of the cylinder, so that the clothes and the washing liquid are constantly tumbling in the cylinder together to wash the clothes.

Finally, the current wave-wheel washing machine was invented by the Japanese, who introduced the British jet washing machine to develop a unique style and popular washing machine to this day.

"This must have been invented by a lazy man!" Huang Shi thought about it for a long time, but he still didn't remember the earliest inventor, so he had to apologize in his heart and pop out of his mouth with such a sentence.