Miner structure

mining needs high-end graphics card, mining equipment is the first to eliminate NV graphics card. Mining must be done with graphics cards. The overall structure of mining equipment and ordinary PC machine is different is the number of graphics cards. You can install four or eight through pic extension

The wealth myth of "one coin, one villa" is still widely spread in the currency circle, and new investors are eager to try. But in fact, a stable power structure has been formed in this small circle, from mining machinery manufacturers to large mine owners, and then to mining pools

manufacturing and selling mining machines, mining, building mines and building ore pools, the "mining circle" has become another way to get rich in the blockchain world, and mining machines have also become a little-known "big business"

according to the imagination of Nakamoto, the inventor of bitcoin, the ideal state should be "decentralized", with computing power scattered all over the world. However, contrary to decentralization, the mine pool is absolutely centralized, and more and more mining machines are connected to the mine pool

this article was first published in the Southern Weekend

"if speculation is a road of no return, then investment in mining machinery is a business that can make a steady profit without loss, and it is only a matter of time before the cost is recovered." Zhong Xi, general manager of Shenzhen Aibo times Technology Co., Ltd., calculated an account. A miner earns 200 yuan a day, which can be recovered in 120 days, and then the profit

in October 2017, in addition to his main business, Zhong Xi joined the mining army and quickly became a big boss in the mining circle. He operated many large mines in Jiangxi, Sichuan, Guizhou and other places

in fact, the business of "steady profit without loss" still depends on the continuous rise of currency price. In the past two months, the price of bitcoin has dropped from US $15000 to about US $10000, or even below US $6000 at one time, which has extended the cycle of mining machinery return. If it keeps falling, the profit will be far away

in 2012, four years after the advent of bitcoin, mass-proced mining machines appeared. Before that, mining was mainly a private activity, which could be completed by a home computer“ At that time, the home computer was the money printing machine, and a lot of bitcoin could be g up every day. " Huang Shiliang, a senior digital currency player who sold mining machines in his early years, recalled to Southern Weekend reporters

after the emergence of mining machine, mining began to be "socialized", with the emergence of mines and pools, and mining became a collective work. The indivial miner is entrusted by the mine, just like the workers on the proction line, as long as they are there, they can get paid every day

manufacturing and selling mining machines, mining, building mines and building ore pools, the "mining circle" has become another way to get rich in the blockchain world, and mining machines have also become a little-known "big business"

China has become the world's largest procer of mining machinery. Since 2012, a number of miner manufacturers have been born in China, such as Shenzhen bitquan Co., Ltd., which proces cat roasting miner, bitmainland, Jianan Yun and Yibang communication, which are now famous. In Huaqiangbei, Shenzhen, foreigners can be seen everywhere asking about the price of mining machinery with translators

recently, in an interview with the media, the CEO of bitcontinental, Mr. Zhan Ketun, said that this startup company, which has been established for only four years, had a revenue of about US $2.5 billion in 2017. Bitcontinent is known as the world's largest miner, whose ant miner has always been the hard currency of the coin circle and miner world

just like the coin circle, the mining circle also needs belief that the mechanical mathematical operation of mining machines every day can create great wealth

this process of "centralization" made the wealth of the mining circle snatched by a few people, and it was not easy for Zhong Xi to enter the core circle

calculation force "centralization"

the main function of the mine is to provide a place for scattered mining machines to operate. But it is the "ore pool" that really plays the role of integration

the so-called "mine pool" can be simply understood as "cooperative mining". The miners and the mines give the calculation power to the mine pool, and the mine pool is used as the only address to access the digital currency network for mining, and then distribute dividends to the miners according to the calculation power of the mining machine

the history of ore pool is longer than that of mining machine. In November 2010, the mine pool named slush appeared. Today, its official website says "the world's first mine pool", which is also recognized by the coin circle. Compared with the mine, the construction of the mine pool needs certain technology, and the threshold is relatively higher

the person in charge of a well-known domestic mine pool explained the principle of the mine pool to the Southern Weekend reporter. He compares mining to buying lottery tickets. If you dig alone, the probability of winning the lottery is very unstable. You may win 100000 today, but you won't in the next six months

"gather the people who buy lottery tickets together and buy them in a unified way. No matter who wins, they will be divided according to the proportion of money they pay. In the coin circle, the mine pool plays this role. " The person in charge said

it's not complicated to connect the mining machine with the ore pool. According to the operation guidelines of the major ore pools, it can be completed in a few steps, and then according to the calculation power provided by ourselves, we can get benefits from the ore pool. The miner is like a worker standing on the proction line, receiving a fixed salary every day

the mine pool with huge computing power and many mining machines has an absolute say in the coin circle and the mining circle. For example, if you want to issue a new digital currency or dominate the bitcoin bifurcation, you generally need to get the support of the mine pool. Without the support of the mine pool, no one will dig the new currency, so it is meaningless

in addition, when a hot new coin comes out, the mine pool can also use its own miners to pack it quickly and take the lead in the rush purchase of these new coins

in June 2017, when SNT and EOS were issued, Southern Weekend reporters witnessed the scene of minchi snapping up tokens. Because there are too many investors, many indivial investors can not put their funds into the designated position, but the person in charge of a mine pool can easily complete this operation

according to the imagination of Nakamoto, the inventor of bitcoin, the ideal state should be "decentralized", with computing power scattered all over the world. However, contrary to decentralization, the mine pool is absolutely centralized, and more and more mining machines are connected to the mine pool

on January 18, 2018, Emin Yun silash, a computer professor at Cornell University, and other five people co authored a paper pointing out that there is an implicit power structure behind bitcoin and Ethereum, the two major digital currencies, and mining is too centralized, in which 50% of bitcoin's computing power is controlled by the four major mines

5

recessive power structure

in the mining circle, the top of the food chain is mining machinery manufacturers. At present, the three recognized mining machinery manufacturers are located in China. Through the proction and sales of mining machines, they get a lot of profits. At the same time, they also set foot in the construction of mines and pools, and have the right to speak in the whole coin circle

ant mining pool is one of the top two large mining pools in the world, and its computing power accounts for 17% of the total network computing power. However, according to instrial and commercial data, it was founded by bitmainland; Several investors of Jianan Yun are also investors of Hangzhou mining Pool Technology Co., Ltd., which has its own mining pool hash and mining platform, but the mining pool has ceased operation at the end of 2017

"we are building a new mine in Irkutsk, Russia, where electricity charges are much lower and new mining machines can be hosted there." The source said

above the mining machinery manufacturers, it is the harvest of chip giants“ The core technology of mining machinery lies in the chip. Whoever has the chip can proce more mining machinery. " Ding Yang told reporters at Nanfang Weekend that the chips are mainly in the hands of several giant manufacturers, such as TSMC, NVIDIA, AMD, etc

since 2015, TSMC has always been the largest chip supplier of Jianan Yun. In 2015, the chips purchased by Jianan Yun from TSMC accounted for 69.62% of all the chips purchased by Jianan Yun. Since then, this figure has been maintained at about 60%. Most of the profits of Jia Nan Yun Zhi were made by TSMC

under the mining machinery manufacturers, there is another power structure. Jianan Yun disclosed this secret in its 2017 prospectus. In the first four months of 2017, four of the top five customers of Jianan Yun were "indivials". According to public information, three of them are well-known "wrists" in the currency circle

these big customers are not simple miners, they all have their own influence in the coin circle. Mechanical operation of the mining machine to bring them income at the same time, also brought the right to speak

according to an insider in bitmainland, most of the big customers in bitmainland are big guys in the currency circle. However, bitmainland officials declined an interview with the Southern Weekend reporter. The company's Public Relations Department responded that it was not convenient to disclose the content because it signed a confidentiality agreement with its customers

"one coin, one villa" wealth myth is still widely spread in the currency circle, and new investors are eager to try. But in fact, a stable power structure has been formed in this small circle, from mining machinery manufacturers to large mine owners, and then to mining pools

most of the new entrants can only make the harvested "leeks"

Diamond structure is divided into equiaxed tetrahedral cubic and hexagonal diamond

in diamond crystal, carbon atoms are connected by tetrahedral bonding to form an infinite three-dimensional framework, which is a typical atomic crystal. Each carbon atom forms a covalent bond with the other four carbon atoms in SP3 hybrid orbital to form a tetrahedron. Because the C-C bond in diamond is very strong, all the valence electrons participate in the formation of covalent bond, and there are no free electrons, so the diamond is not only hard, but also non-conctive

diamond is 10; Because of the highest hardness in nature, diamond must be cut and processed with diamond powder. The density of diamond is 3.52g/cm3, the refractive index is 2.417 and the dispersion index is 0.044

extended data:

diamond is a kind of single crystal composed of carbon element, which is formed under the conditions of high pressure and high temperature in the deep part of the earth. Diamond is a colorless regular octahedral crystal, which is composed of pure carbon and is linked by carbon atoms with four valence bonds. It is the hardest material known to exist naturally

because the C-C bond in diamond is very strong, all valence electrons participate in the formation of covalent bond, and there are no free electrons, so the hardness of diamond is very high, the melting point is 6900 degrees Fahrenheit, the ignition point of diamond in pure oxygen is 720 ~ 800 ℃, and that in air is 850 ~ 1000 ℃, and it is not conctive

CS Series cone crusher

I. working principle:

the motor drives the V-belt and pulley, and drives the cone to swing under the force of eccentric sleeve through the transmission shaft, so that the material is constantly impacted, squeezed and bent in the crushing cavity, so as to achieve the purpose of material crushing

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bevelgear (20crni2 MOA)

(11) pulley (HT200)

(12) spindle (45)

(13) thrust bearing (upper thrust plate 35SiMn, (14) eccentric sleeve (zgg330-450)

(15) spindle bushing (zccuppb15sn7)

(15) spindle bushing (zccuppb15sn7)

(15) spindle bushing (zccuppb15sn7)

(14) eccentric sleeve (zgg330-450-450)

(19) (19) (19) (19) (19) (19) (19) lower seal ring (HT250) (HT250) (HT250) (20) (20) (20) (20) body (20) body (zg

(23) spindle nut (zg230-450)

(24) distributor (zg270-500)

(25) hopper (ZGMn13)

(26) adjusting sleeve shield (Q235A)

(27) spring (60Si2Mn)

(28) sector plate (Q235A)

(29) ejector (45)

(30) Jack

(31) push cylinder

(32) high pressure pump station

(33) thin oil station

Overflow ball mill is mainly composed of cylinder, end cover, main bearing, hollow journal, transmission gear and feeder. Overflow type ball mill cylinder is welded by steel plate with thickness of 15-36mm. Flange plates made of cast steel are welded at both ends of the cylinder. End caps 2 and 3 are connected with flange plates by bolts. The two must be precisely processed and matched, because the hollow journal bearing the quality of the mill is welded on the end cap. The cylinder is provided with 1-2 man holes for repairing and replacing the lining plate. A lining plate 5 is arranged inside the cylinder body and the end cover. The hollow Journal on the end cap is supported on the main bearing 4. Sliding bearing is commonly used in main bearing, its diameter is very large, but its length is very short. The bearing bush is casted with Babbitt alloy, which is different from ordinary sliding bearing in that only the lower part has bearing bush. The whole bearing is made of cast iron except that the bearing bush is cast with Babbitt metal. Due to the large span and load of the ball mill, there will be a certain degree of deflection, and the manufacturing and assembly errors are difficult to ensure accurate concentricity. Therefore, the main bearing is made into automatic self-aligning sliding bearing. In order to prevent the bearing bush from sliding out of the bearing seat e to excessive rotation, a cylindrical pin is placed in the center of the spherical surface between the bearing seat and the bearing bush