First, Machine instructions
1, Overview
Ball mill, and change the traditional ball mill bulky heavy, high energy consumption, low yield, the noise big shortcoming, offer you is a kind of light weight, low cost, power consumption province, low noise, low steel consumption, high productivity, a new type of ball mill.
Ball mill is characterized by:
(1). Main bearing part:
The double row spherical roller bearing, the shaft diameter greatly reduced, not only can reduce the weight of the mill and reduce friction torque, reduce useless power consumption, while ensuring the automatic aligning, prolong the service life, simple operation, convenient maintenance.
(2). Cylinder parts:
To increase the effective volume and make the adjustment of media: reasonable ball large diameter in the cylinder, the feeding from the ground with the ball of the automatic classification of ore block, more close to the port of discharge, the ball size is smaller, which can give full play to the role of various ball, get the finer granularity of product processing; the amount of increase.(3). Transmission part:
The bearing is used to reduce the distortion stress of the cylinder, so that the gear modulus and the diameter are reduced accordingly, so that the ball mill's weight is reduced and the load is reduced.
(4). Power part:
The motor power of the ball mill, 20-40% lower than conventional grinding machine using this series of ball mill can get significant social and economic benefits, due to power saving costs can only withdraw the ball mill 2-3 years investment.
2, Machine use
This product can be widely used in non-ferrous metals, ferrous metals, non-metallic ore field and chemical industry, building materials and other industries of grinding materials used. It is used for dry grinding of all kinds of hardness of ore and materials.
This product is composed of feeding part, cylinder part, discharging part and so on, as well as bearing part, transmission part, basic part and so on.
The cylinder of ball mill with steel balls by centrifugal force generated by the rotating cylinder, will enhance the grinding media to a certain height after falling down the ore crushing, grinding and grinding medium and the cylinder liner plate between the ore grinding ore and slag, this process is called grinding process.
For the sale of products, such as the quality of product manufacturing defects within six months, the company implemented a free repair, replacement, do not assume joint and several liability.
Two, the ball mill test
1, preparation before commissioning
(1) check motor drying and insulation, electric motor running empty test.
(2) check all fasteners in detail.
(3) for cleaning and oiling of all the lubricating parts.
(4) to check whether the sealing device of each seal meets the quality requirements.
(5) installation and inspection of various protective devices are complete and reliable.
(6) empty (no grinding medium, no material) and other rotary ball mill jigger, check body has no contact with other objects or collision phenomenon, there is no abnormal sound.
After the empty load barring confirmed after passing to empty load (without the ball, not feeding) test, no load test should meet the following requirements:
(1) the lubrication of the normal, no oil leakage phenomenon.
(2) the main shaft bearing temperature shall not exceed 50 degrees.
(3) the ball mill works smoothly, and the gear has no abnormal noise.
(4) there is no loosening of the lining board and transmission parts.
(5) there was no significant change in energy consumption, continuous operation for more than 8 hours, no abnormal accident occurred.
3, load test
No load test qualified can be carried out after the load test load test should be with the following requirements:
(1) before the operation of the mill to add a specified amount of load of 20-30% steel balls and materials, running 8-10 hours, after the normal 30 minutes to join 10%, until the full load and the normal feeding of 10-20 hours of continuous operation;
(2) the ball mill works smoothly, without sharp periodic vibration and minor impact.
(3) the motor current is within the allowable range, and the temperature is below the allowable temperature.
(4) the lubrication point is normal, the temperature of the main bearing is not more than 50 degrees.
Three, operating procedures and maintenance
1, ball mill before the start: check all the connecting bolts are tightened, gears, couplings and the key to mine for fastening.
2, Check: oil tank and reducer in the oil is sufficient, the oil pipeline is smooth.
3, check around the mill and classifier without hinder the operation of the debris, and then use the crane wheel to the mill for a week, loosening the cylinder ball and the ore, and check the situation of gear bared have no abnormal noise.
4, start order is: first start the classifier, and then start the ball mill, all operating normally and then began to mine.
5, operation process to achieve:(1). ball mill is not allowed to work in the case of overload and material supply, in the process of using quantitative regularly from the entrance of the feeder adding steel ball.
(2). the main bearing per shift filling grease, and often pay attention to the temperature rise is normal, motor voltage, current, temperature, noise.
(3). periodically check lining board screw fastening, prevent loose lining board, displacement and loss caused by accidents.
(4). check the size, main bearing, gear reducer lubrication condition.
(5). observed before and after the end cover, cylinder, exhaust trough, classifier overflow tank return sand, sand return sand blockage or leakage.
(6). often pay attention to the change of ore properties, and take the appropriate measures in time according to the situation.
When stop should stop feeding machine, to stay after the ball mill cylinder body ore processing, and then, stop the ball mill motor with the help of a classifier lifting device of the spiral sand surface is put forward, finally stop classifier.
7, Maintenance
In order to ensure the safety running and prolonging service life, ball mill must be planned overhaul:
(2). in the repair: once a year, the parts of the equipment to do a larger cleaning and adjustment, replace a large number of vulnerable parts.
(3). major overhaul: in addition to the completion of the task of small and medium-sized repair, focus on replacing and repairing the major components, such as hollow shaft, large gear and so on.
Four, the common failure and elimination method of ball mill
Breakdown phenomenon | Reason | Elimination method |
Main bearing heating, abnormal sound, motor overload power | 1 bad lubrication 2, the main bearing into the sediment 3, bearing broken 4, the main bearing installation is not 5, the amount of ore is too much or less | 1, plus grease 2, cleaning bearings to replace grease 3, replace the bearing to adjust the amount of ore |
Motor power supply is not stable or too high | 1, feeder loose 2, main bearing lubrication bad 3, discharging high concentration of 5, cylinder liners around the unbalanced weight or uneven wear 6, excessive wear of gear 7, motor circuit failure | 1, a feeder to improve lubrication condition 2, adjust the operation of replacing lining board 3, replacement repair gear 4, get rid of the electrical faults |
Ball mill vibration | 1, a gear close is not good or too much wear 2, screws or screw loosening 3, big gear bearings, connecting screws or the like open bolt loosening 4, drive bearing wear too much | 1, adjust the gear gap 2, tighten loose bolt 3, replace the drive bearing |
Suddenly a strong vibration and impact sound | 1, the size of the gear mixed with foreign body 2, loose gear 3, gear to break 4, bearing or fixed on the basis of the screw loose | 1, remove the foreign body 2, replace the gear 3, tighten the bolt |
The end cover and the cylinder are connected with the slurry. | 1, loose bolts, long pin 2, liner plate screw loosening, seal wear or interrupted screw |
Tighten,
replace the bolt and tighten the positioning pin to replace the sealing
pad |
Ball mill starting motor overload or can not start |
There
is no disk mill |
After
the disc mill and then start |
The company reserves the right to interpret because of the technical improvement of the equipment.