Washing machine power
Ant miner is the first cryptocurrency miner brand in the world with a market share of about 70%. The mining machine is developed by bitmainland and has a patent in mainland China. At the beginning, ant miner had only bitcoin miner. Later, its business expanded to other cryptocurrencies, such as Ethereum, dascoin, Leyte, Monroe, etc
ant mining machine adopts ASIC chip designed by bitcontinental, which is proced by TSMC. All chips are made of BM prefix. Each miner has three to four circuit boards, and there are dozens of chips on the circuit board. Therefore, each miner can only be used to mine one or more cryptocurrencies using the same algorithm
ant mining machine needs special mining software, and can not use third-party software. In addition, because of its high power, the ant miner also needs to be used with a special fire ox
The ant miner is often criticized as monopolizing the cryptocurrency mining instry e to its 70% market share, which goes against the purpose of cryptocurrency decentralization. Because Monroe was worried that the mining machinery would monopolize the mining market, Monroe announced to change the mining algorithm a few days after the launch of Monroe (X3 model) despite the opposition of Monroe community, so that all mining machinery could not be used to mine Monroe. Bitcontinent also encountered the failure of its first proct herethe ant miner will use a lot of electricity and proce a lot of waste heat in the process of operation. This leads to a large amount of electricity being consumed for mining or cooling, causing a lot of social criticism. Too much ant mining machine at the same time also led to fire and power failure, causing social inconvenience
It's not against the law
The laws and administrative regulations in China do not prohibit the proction, holding and legal circulation of bitcoin, nor do they prohibit the sale of bitcoin mining machines2. The investment and transaction of "virtual currency" represented by bitcoin are on the rise. For this kind of virtual goods generated in the Internet environment after the development of Internet technology, there are policy and commercial risks in related transactions. However, under the premise of not violating the mandatory provisions of laws and administrative regulations, the contract signed by the parties is a valid contract
3. Bitcoin is generated by "miner" and "mining", and "miner" can be assumed by anyone in any place in the world. "Mining" is a process in which "miner" provides certain computer computing power according to the open source software provided by the designer, and obtains the special solution of the equation through complex mathematical operations, The miner who gets the special solution gets a certain amount of bitcoin reward
Because bitcoin is based on workload proof, it is related to computing power. To have computing power, we need to consume power, so its power consumption is very large. It is precisely because of such a large power consumption that the safe and stable operation of bitcoin system can be guaranteed 
extended information:
according to the data of btc.com website, up to now, the computing power of the whole bitcoin network is about 51.65 eh / s, which is equivalent to 1.84 million bitcoin S15 (28T computing power, 1596w power) mining machines in operation, and the daily power consumption is about 69.92 million kwh. Divided by the current proction of 1800 bitcoins per day, excluding other costs, each bitcoin will consume 38800 kwh of electricity. "
from this point of view, although the current price of bitcoin is expensive, the cryptocurrency market website coinmarketcap.com shows that the current unit price is about $7900, but the cost of mining a bitcoin is not low at all
1. Easy maintenance
2. High strength and low noise
3. When the excitation force and output are properly matched, the excitation force is large
4. The vibration frequency and amplitude can be selected according to different uses
5. Complete specifications, which can meet the work needs of all kinds of vibrating machinery
6. The direction of exciting force can be changed according to the installation mode of vibrating motor
7. The exciting force can be adjusted steplessly by adjusting the angle of eccentric block
8. Totally enclosed structure, can work in any st condition without explosion-proof requirements
operation and maintenance
adjustment
there is a fixed eccentric block and an adjustable eccentric block at each end of the output shaft of the vibration motor. The exciting force can be changed by adjusting the angle between the adjustable eccentric block and the fixed eccentric block. When leaving the factory, the included angle between the adjustable eccentric block and the fixed eccentric block is 0 degree, and the exciting force is the rated exciting force F of the vibration motor at this time. The exciting force at different included angles:
special attention should be paid to adjust the adjustable eccentric blocks on the output shaft of the vibration motor to the same direction and the same angle when adjusting the exciting force
adjustment steps of exciting force
1. Remove the protective cover< 2. Loosen the fastening bolt of the outer eccentric block
3. The eccentric blocks on both sides should be rotated in the same direction, so that the marking on the shaft is aligned with the exciting force indication line on the eccentric block to the required exciting force value, and check whether the two ends are at the same angle
folding excitation adjustment
the excitation force of vibration motors is adjusted to 80% when they leave the factory and 0% when they need to be transported by sea. Adjust according to the following steps when using:
horizontal vibration motor
1. Loosen the fastening screw of the protective cover and remove the protective cover at both ends< (2) the exciting force is less than mv50-2< (3) for vibration motors with excitation force greater than or equal to mv50-2, mv50-4, mv50-6 and mv30-8 (including the four specifications), the outer eccentric block is a fixed block, which is fixed on the shaft with key and cannot rotate. The inner eccentric block is an adjustable block, and the outer surface is equipped with a scale indicating the maximum exciting force percentage, which is pressed on the motor shaft with fastening bolts. Loosen the compression bolts of the inner eccentric blocks on both sides, rotate the inner eccentric blocks on both sides in the same direction, align the exciting force scale marking on the inner eccentric block with the slit on the outer eccentric block, adjust the exciting force to the required exciting force, tighten the compression bolts of the inner eccentric block, and install the protective cover
note: except for special applications, the positions of the eccentric blocks at both ends of the shaft of the vibration motor must be corresponding, and the percentage of the eccentric blocks at both ends must be set equal, otherwise the vibration motor will proce huge staggered exciting force and damage the vibration machinery of the motor< (1) adjustment of exciting force: remove the pressing bolt of the additional block, and adjust the exciting force by increasing or decreasing the number of additional blocks< (2) adjustment of the angle between the upper and lower eccentric blocks: the upper eccentric block is a fixed block, and the lower eccentric block is an adjustable block, which are pressed on the motor shaft with fastening bolts. The two end faces of the rotating shaft are engraved with reference lines, and the outer surface of the lower eccentric block is equipped with a ruler indicating the rotation angle. Loosen the pressing bolt of the lower eccentric block, rotate the lower eccentric block, so that the angle ruler marking line on the lower eccentric block is aligned with the reference marking line of the rotating shaft, adjust to the required angle, and tighten the pressing bolt of the lower eccentric block; If you need to adjust the angle of the upper eccentric block, you can also adjust it according to the corresponding method
connect the power supply
the outlet cable of the vibration motor should be heavy-ty four core cable because it is subject to vibration. Sudden bending is not allowed near the cable outlet. A bending radius greater than 8-9 times of the outer diameter of the cable should be provided, and then the cable should be fixed to the stationary machine or frame. The distance is about 0.6 m to 0.9 M. Soft insulating material shall be padded at the clamp for fixing the cable to avoid damaging the cable by friction. One end of the grounding wire of the four core cable is connected with the grounding screw in the junction box, and the other end must be reliably grounded. For small vibration motor, there is no junction box on the shell, and heavy three core cable is used to connect directly from the inside of the motor. A grounding screw is installed near the foot of the motor, which must be reliably grounded when in use
precautions
the outgoing cable of vibration motor is a vulnerable part, which is often damaged e to vibration friction, resulting in motor phase missing operation and motor damage. The user should check the condition of the cable frequently and replace the cable of the same type in time if it is worn
vibration source three-phase asynchronous motor is a general vibration source for all kinds of vibration machinery. Such as vibration feeder, vibration conveyor, vibration dryer, vibration drawing machine, vibration shaker, vibration screening machine, vibration anti blocking of silo, etc. It can be widely used in electric power, building materials, grain, coal, mining, metallurgy, chemical instry, light instry, casting, railway, cement, port and other instries http://wenku..com/view/39bf670b79563c1ec5da7103.html
Marie Curie is a French Polish physicist and chemist< In 1898, French physicist Antoine Henri Becquerel discovered that uranium bearing minerals can emit a mysterious ray, but he failed to reveal the mystery of this ray. Mary and her husband, Pierre Curie, worked together on the radiation. Under extremely difficult conditions, they separated and analyzed pitchblende, and finally found two new elements in July and December 1898
in memory of her motherland Poland, she named one element polonium and the other radium, which means "radioactive substance". In order to prepare pure radium compound, Marie cui7e (1867-1934) spent four years to extract 10 mg radium chloride from tons of pitchblende slag, and the relative atomic mass of radium was 225. This simple figure embodies the painstaking efforts and sweat of the Curies< In June 1903, Madame Curie received her doctor's degree in physics from the University of Paris with her doctoral dissertation in the study of radioactive substances. In November of the same year, the Curies were awarded the David gold medal by the Royal Society. In December, they won the 1903 Nobel Prize in physics with becoller< In 1906, Pierre Curie died in a car accident. This heavy blow did not make her give up her persistent pursuit. She enred her grief and redoubled her efforts to complete their beloved scientific cause. She continued her husband's lecture at the University of Paris and became the first female professor of the University. In 1910, her famous book on radioactivity was published. With Mou, she worked with others to analyze pure metal radium and determine its properties. She also measured the half lives of oxygen and other elements and published a series of important works on radioactivity. In view of the above achievements, she won the Nobel Prize in chemistry in 1911 and became the first great scientist to win the Nobel Prize twice in history<
the founder of radiation science, who has experienced the joys and sorrows of science, died of malignant anemia (leukemia) on July 4, 1934 e to years of hard work. She has dedicated her glorious life to the scientific cause of mankind.
The function of lubrication system is to continuously supply oil to the friction surface of moving parts to form a thin layer of lubricating oil film, so as to avoid the adverse consequences such as wear and heat caused by direct friction between parts and increase the movement resistance. It has the following functions
Lubrication: lubricating oil can make the moving parts form oil film contact, rece the friction resistance and power loss, and rece the wear of parts② cleaning function: the circulating oil will wash away the metal particles which fall off from the friction, so as to prevent the formation of abrasive between the parts and aggravate the wear
(3) heat dissipation: the circulating oil takes away 6% - 14% of the heat generated by friction, and prevents the moving parts from burning e to too high temperature rise (4) sealing function: the oil film formed by lubricating oil between piston ring and cylinder wall can play a certain sealing function and rece air leakage. ⑤ Antirust effect: the lubricating oil film adsorbs on the metal surface, separating the air and water, playing the role of antirust and anti-corrosion
The official definition of ball mill model and specification is a series of indicators reflecting the nature, performance and quality of the proct, which is generally composed of a series of letters and numbers with a certain number. For example, brand name, grade, composition, content, purity, size, etc. In short, specification refers to the size of performance indicators, and model refers to the name (or code) obtained from the collection of specifications and models
ball mill specification: if it is expressed by the diameter and length of the ball mill cylinder, it can be shown as φ two point two × 7m、 φ two point four × 13m、 φ three × 11 m, etc
ball mill model: also, according to the diameter and length of the ball mill cylinder, it is mqgg 1212, mqG 1212, mqy 1212, mqyg 1212, etc., in which the letter part indicates the abbreviation of the ball mill equipment, and the number part indicates the diameter of the ball mill cylinder. Take mqgg 1212 as an example: this model is a wet energy-saving lattice ball mill φ one point two × 1.2m
generally, there are many models and specifications of mine ball mills, which can be divided into large, medium and small types according to the level. Taking ferrous metals as an example, a large concentrator with a daily processing capacity of 3000t, a medium concentrator with a daily processing capacity of 900-3000t, and a small concentrator with a daily processing capacity below 900t
the commonly used mining ball mill equipment mainly includes
wet energy-saving lattice ball mill. This lattice ball mill mostly deals with coarse minerals and adopts large double row self-aligning roller bearing, which effectively reces the friction force and is easy to start. Compared with other ball mills, it can save 20-30% energy
small ball mills are mainly used in small and medium-sized development enterprises. The proction scale of such enterprises is small, and the investment cost of small ball mills is low, so the investment income of users is fast, and it will not cause a waste of resources. The main ball mill equipment and model parameters suitable for medium-sized concentrator are as follows:
the above introces the definition of mining ball mill model and specification, and the distinction of model and specification according to large, medium and small type selection, and shows the model, specification and parameters of ball mill according to each level, which can be used for reference. However, in the actual concentrator, the specific model and specification of ball mill selected by each concentrator should consider the nature of materials and beneficiation conditions. It is recommended to select qualified ball mill manufacturer for test selection< br />
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