Feeder lubrication
1. Before the installation of the seat type drawing machine, the on-site foundation shall be compared with the drawing of the drawing machine. After the inspection, the steel plate shall be embedded. The thickness of the steel plate shall be 20 mm and the flatness shall not be greater than 1.5%
2. After the ore drawing machine is installed, adjust the relative position, and then weld the spring base and the embedded steel plate by spot welding
3. It is required that the two vibrating motors must turn in the opposite direction
4. After installation and running for 1 hour, check whether the body runs smoothly, the yaw is not more than 0.5mm, and the bolt fastening of the vibration motor
5. If the handling capacity is not enough, the exciting force of the vibration motor can be adjusted to achieve the best effect if it is allowed
6. Adjustment of exciting force: A. remove the protective cover; B. loosen the two inner eccentric blocks; C. adjust the two outer eccentric blocks in the same phase and at the same angle; D. tighten the adjusting bolts and install the protective cover; e. the temperature rise of the vibration motor bearing shall not be greater than 80oC (resistance method)
7. During the operation of the ore drawing machine, attention should be paid to whether the movement of the machine body is stable. If abnormal operation or abnormal sound is found, the machine should be stopped immediately for inspection. 8. The bearing of vibration motor shall be lubricated with 3 # lithium grease once a week. The bearing shall be inspected and cleaned once a year to check the wear degree of the bearing. If necessary, it shall be replaced and repaired in time
9. The fastening bolts of the connection parts should be checked frequently to eliminate the hidden danger in time
you must be familiar with bitcoin now. The virtual currency, once considered as a freak, has flourished in the economic market. In particular, bitcoin once caught fire in the past two years, attracting countless people who fantasize about huge wealth to pursue. Recently, Libra, another virtual currency, has emerged. What will be the future market of Libra, Will it bring an explosion to the economic market just like bitcoin
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from the original intention of creating Libra coin is to save money for users, this original intention will certainly be recognized by everyone, but the key to the future direction of Libra coin is how to solve the operation supervision problems in the later stage. Bitcoin once panicked bitcoin holders because of security problems. The market of virtual currency is global. It is a great challenge for operating companies to do a good job in global security supervision. I also hope that Libra coin can grow up and fight against bitcoin. After all, the more competition, the more our interests will be maximized
Chinese ancient currency is relatively rare. Like shells and stones of ancient times, the oldest are some of the food they beat. Then there are coins of various shapes made of copper. Next is our world fixed currency gold and silver. There is also the paper money that we made in Song Dynasty
China is a country with 5000 years of cultural history. So our country has the most exotic currencies. In the Yellow River Valley in ancient times, we didn't have money, we all hunted together, and then we went back to our houses to share our prey. So money at that time was food, that is, the food of other animals was exchanged for the food of other animals. With the increase of the number of people living in groups, our currency has been replaced with shells and more beautiful stones, which is a manifestation of the progress of life. When people know how to dress up, they will wear shells in strings around their necks. For example, the first Chinese dragon unearthed in Puyang City, Henan Province, is a dragon shaped pattern with shells{ RRRRR}with the development of time, the initial country was formed, and the country unified its currency. Our currency became a copper currency. There are many shapes of this kind of currency, such as round, concentric circle, square, knife and so on. After that, gold will appear in our vision. Yuanbao appeared in our country, which is the unique currency of our country. In the Song Dynasty, our country was highly developed, and the circulation of money was very large. In some places, there will be banknotes, which are made by many businesses together. This is a pioneering work of our country, and it has also influenced the world. Our country is still using paper money as our common currency. The history of currency is a development history of our country. The development of currency represents the development degree of our country. All kinds of exotic currencies represent the brilliant development history of our country
1、 Preparation and inspection before operation
2. Whether the lubricating oil of the gearbox reaches the oil mark
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6. Whether the V-belt is damaged
7. Whether the tank body is worn out or damaged
8. Whether the safety devices such as belt cover are firm
9. Whether the pointer of ammeter is at zero
10. Whether all switches and buttons are in good condition< 2. Operation method
1. Start up operation method
(1) before operation, it must be checked item by item according to the inspection content before start-up
(2) get ready to start after hearing the start signal
(3) close the switch and start the operation button
2. Stop method
(1) stop the mine only after the ore in the ore bin has been fully supplied
(2) press the stop button of feeder operation
(3) turn off the power switch
(1) pull down the switch immediately in case of power failure or emergency stop without notice
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
in order to make the ball mill run at a high rate with good grinding effect, the operation and maintenance regulations must be strictly observed< 1. Maintenance of the machine:
1. The bearing of the bearing crusher bears all the load of the machine, so good lubrication has a great influence on the service life of the bearing, which directly affects the service life and operation rate of the machine, so the injected lubricating oil must be clean and the seal must be good, The main oil filling part of the machine (1) rotating bearing (2) roll bearing (3) all gears (4) movable bearing and sliding plane. 2. The newly installed tyre is easy to loose and must be inspected frequently. 3. Pay attention to whether all parts of the machine work normally. 4. Pay attention to check the wear degree of easily worn parts and replace worn parts at any time Dust and other objects should be removed from the underframe plane of the movable device, so as to prevent the movable bearing from moving on the underframe when the machine encounters materials that cannot be broken, resulting in serious accidents. 6. When the bearing oil temperature rises, stop the machine immediately to check the cause and eliminate it. 7. When the rotating gear is running, stop the machine immediately to check and eliminate the impact sound
this article is recommended by Gongyi Xinxing Machinery Factory
1. Working principle of overflow ball mill
3. Working principle of horizontal ball mill
the appearance of horizontal ball mill is a horizontal cylindrical rotating device, which is driven by outer gear, sprocket or belt. Different from lattice and overflow ball mill, it has two material silos. When the ball mill cylinder starts to rotate, the material is loaded into the cylinder by the hollow shaft at the feed end of the ball mill. Due to the combined action of inertia, centrifugal force and friction, the material parabolic operation is realized and the grinding is completed
the grinding principle diagram of ball mill is derived from the fact that the network materials enter the first bin of the mill evenly through the feeding device feeding hollow shaft screw, in which there are stepped lining plates or corrugated lining plates, with different specifications of steel balls built in. The centrifugal force generated by the rotation of the cylinder will bring the copper ball to a certain height and then drop, which will have a heavy impact and grinding effect on the materials. After coarse grinding in the first bin, the materials enter the second bin through the single-layer partition board. There is a flat lining plate and steel ball in the bin. The materials are further ground, and the materials with finished proct particle size are discharged from the discharge end of the cylinder to complete the powder operation
The working principle of the cone ball mill is similar to that of the horizontal ball mill. The cone ball mill is driven by the outer gear. The principle of the two bin mill is the same. However, the second bin of the cone ball mill is inlaid with a flat lining plate to complete the further grinding of the material together with the steel ball. Finally, the material is discharged through the discharge grate plate to complete the grinding5. Working principle of planetary ball mill
planetary ball mill is equipped with four ball milling tanks on the same rotary table. When the rotary table rotates, the ball milling tanks will rotate around the rotary table, and at the same time, they will rotate around their own axis, making a star like motion, while the grinding balls in the tank collide with each other in high-speed motion, grinding and mixing materials
working principle of various types of ball mills
(1) carefully check whether all parts of the crusher are in good condition, whether all connecting pieces are firm, and whether there are obstacles in the transmission parts, etc
(2) check whether there are ore or iron lumps in the crushing chamber. If there are ore and other impurities, they should be cleaned to ensure that the crusher starts under no-load condition
(3) check whether auxiliary equipment such as feeder, belt conveyor, electrical equipment and signal device are in good condition
(4) check whether the size of the ore outlet meets the requirements of the proction process
(5) check the oil level and temperature in the oil tank. When the oil temperature is too low in winter, the heating equipment should be used to heat the oil temperature above 20 ℃
(6) check whether the interlocking devices of lubricating equipment, oil pump motor and crusher motor are normal
2. Start up of gyratory crusher
the gyratory crusher can only be started according to the start-up procere after the above inspection and confirmation
(1) start the oil pump motor of the lubrication system, check and adjust the oil supply pressure to control the oil supply pressure in the range of 0.1 ~ 0.3 MPa. Check whether the oil flow indicator and the whole lubrication system work normally. Check whether the pressure of cooling water in the filter cooler is about 0.05 MPa lower than the oil supply pressure, so as to prevent the cooling water from seeping into the lubricating oil. After the lubricating oil reaches all lubricating parts and the return oil is normal, the start-up signal will be sent out according to the regulations
(2) for hydraulic rotary crusher, before starting the main engine, the oil pump motor of the hydraulic system should be started to supply oil to the oil cylinder. When the crushing cone rises to the working position (the size of the ore outlet meets the requirements), close the stop valve first, and then close the oil pump motor. At the same time, check whether the charging pressure of the accumulator meets the requirements
(3) start the host. After starting the motor of the rotary crusher, first observe whether the working current of the ammeter is normal, and whether the operation of the main engine and each part of the crusher is normal. At the same time, add grease to the crushing cone suspension device and other dry oil lubricated parts. When the crusher idles for 3-5min and the machine runs normally, start the feeder to feed the ore, so that the crusher can crush the ore
3. Matters needing attention in the operation of the rotary crusher
after the feeder starts, the operator must observe and pay attention to the following matters ring the loaded operation of the crusher, and operate correctly:
(1) the operation of the crusher should be checked frequently. Pay attention to whether the sound of transmission part and gear meshing is normal, and whether the sound of machine crushing ore is normal. If there is any abnormal sound and any abnormal situation, it should be dealt with immediately. In special cases, it should be stopped immediately
(2) ore feeding must be uniform, and the particle size of ore feeding should not be greater than 0.8 times of the width of ore feeding mouth
(3) pay attention to the situation of ore discharge and transportation at any time to prevent the ore from blocking near the ore discharge outlet and causing accidents
(4) regularly check whether the oil pump, cooler and filter work normally, check the oil flow indicator of each lubricating part, and check whether the oil pressure and temperature are normal. The return oil temperature should be lower than 60 ℃, and the oil temperature should be below 45-50 ℃ after cooler
(5) grease the crushing cone suspension device and pulley bearing regularly
(6) strengthen the inspection of ore feeding to prevent metal block, drill head and other non broken materials from entering the crushing chamber
(7) regularly check whether the connecting pins between the crossbeam, the middle frame and the base are loose, and whether the broken liner is loose and seriously worn. Find problems and deal with them in time< (1) stop the feeder first, and the crusher will continue to run until all the ore in the crushing chamber is broken. Otherwise, it will bring great difficulties to the next startup
(2) stop the crusher
(3) stop the oil pump and ore discharge transportation equipment.
ling cement ball mill
the working principle of ball mill
there is a circular cylinder with end caps with hollow journals at both ends of the cylinder. The journals of the end caps are supported on the bearings. The motor rotates the ball mill through the gears installed on the cylinder, and the grinding medium (steel ball, steel bar or gravel, etc.) and the ground ore are installed in the cylinder, The total loading is 25-45% of the effective volume of the cylinder. When the cylinder rotates around the horizontal axis according to the specified speed, the grinding medium and ore in the cylinder are lifted to a certain height by the cylinder liner under the action of centrifugal force and friction, and then fall or throw away from the cylinder wall freely, so that the ore is crushed by impact and grinding. The ore is continuously fed from the hollow journal at one end of the cylinder, and the ground proct is continuously discharged through the hollow journal at the other end of the cylinder. The movement of ore in the cylinder is realized by the pressure of continuously feeding ore. During wet grinding, the ore is carried away by the current. During dry grinding, the ore is taken away by the air flow drawn out of the cylinder
working principle of ceramic ball mill
the motor drives the cylinder to rotate through the deceleration device. The crushed ore and steel ball in the cylinder are brought to a certain height by the lining plate under the action of friction and centrifugal force when the cylinder rotates. Due to the action of gravity, the ore is thrown and dropped, and the ore is graally crushed under the action of impact and grinding. The crushed ore is discharged out of the cylinder through the discharge part. After the discharged minerals are graded into qualified procts in the spiral classifier, the coarse sand returns to the ball mill through the combined feeder for further grinding. The feeder feeds continuously and evenly, the ore enters the ball mill continuously and evenly through the combined feeder, and the ground materials are continuously discharged from the ceramic ball mill. Ceramic ball mill is a kind of grinding equipment which can work 24 hours a day
working principle of lattice ball mill
lattice ball mill is composed of cylinder part, feeding part, discharging part, bearing part, transmission part and lubrication system. The cylinder is supported on the main bearing by the end cover. The cylinder and end cover are lined with high manganese steel lining plate, and the grid lining plate is also installed on the discharge side. The small gears of different sizes are installed in the cylinder according to the proportion to drive the big gear on the cylinder to make the ball mill rotate. The ore is fed by the feeder and enters the mill through the inner sleeve of the feeding shaft neck. The milled pulp is lifted to a level higher than the discharge port through the lattice lining plate through the fan-shaped chamber leading to the discharge port, so that the pulp is discharged from the mill. Because of the fan-shaped chamber's lengthening and lifting effect, the time of pulp staying in the mill is shortened, so the lattice ball mill is also called forced discharge mill< The structure of overflow ball mill is simpler than that of lattice ball mill, except that the structure of discharge end is different, others are basically the same as lattice ball mill, the main difference is that there is no lattice plate, the inner surface of hollow journal bushing at discharge end is equipped with spiral square and spiral blade with opposite rotation direction of mill, The purpose of overflow ball mill is to prevent the water ball or coarse ore block from discharging together with the slurry. The discharge of overflow ball mill depends on the slurry flowing through the lower edge of hollow journal bushing, so the liquid level of slurry in the cylinder is higher than that of lattice ball mill.