resulting in broken teeth dolomite mill pinion reason

The first reason for broken teeth: low start

We start the ball in normal circumstances, the first station is a high-pressure oil cash work station first high-pressure working oil. Low-pressure pump is started, with the

After the high-pressure pump start, when the pressure reaches 16 ~ 18MPa, the ball floated Simplified 0.13 ~ 0.18 mm, then you can start the mill. 15 min later, the ring gear and small

Adequately lubricated gears, mill at 0.4 MPa of low pressure lubrication operation. Because job working operation or electrical problems, and sometimes high-pressure oil pressure does not reach a predetermined

Oil pressure or high-pressure magnetic systems pump there is a problem to force the mill started at a lower pressure. At this point the host mill bearing pad is closely integrated with the state of the hollow shaft, friction

Large, if start mill, not only easy to scratch pad, and a small gear due to localized sudden impact, prone to the phenomenon of broken teeth.

The second reason for broken teeth: No disk drive or disk drive enough time

Under normal circumstances, the ball must be stopped before stopping the mill to the mine, mill water emptied barrel materials, or a thick slurry drying and will stick to the

Jane mill, the mill to increase the load on startup, even so, the next time you start the ball still need to be started before a slow disk drive device for car, so

Not only will make the ball mill with hollow shaft main bearings formed in the middle layer of film, but also the material loose ball inside the mill. Such mill at startup, you can greatly reduce the startup

Load. If the ball is not in magnetic separators the disk before starting the car, then when the ball once to start easily lead to broken teeth pinion.

A third reason for broken teeth: there radial and ring gear runout

We install the ball mill ring gear, because of the mill ring gear is bolted on simplified its face runout is distributed by the circumference of the ring gear

The screw holes with the top wire adjustments. When the ring gear runout not meet the requirement, in the long run after the ball, loose bolts, ring deformation, it is easy to cause the ring gear

Vibrations.

The fourth reason for broken teeth: extension shaft pinion bearing vibration caused by loose

Vibrating ball mill pinion reasons: gear shaft and the extension shaft misalignment, gear shaft centerline and extending axis tilt large deviations; foundation bolts loose, although

However, often the fastening bolt, but there are still loose.

The fifth reason for broken teeth: Size gear assembly is not in place

Ball mill pinion meshing with the ring gear is critical, if assembled, then you can extend the life of ball size gears to reduce vibration. When the size of the tooth

Wheel installation, the ring gear with the cylinder has been fixed, then we need to adjust the position of the pinion, pinion and ring gear required axial centerline parallel to the tip clearance and

Backlash fit, too small prone to undercut phenomenon, too prone to large gear teeth broken.

Sixth Fracture: End cap plasma leakage, a small gear wear

Ball cap liner blank piece of cast iron, and the ball mill material in a long time under the impact of fixed ball mill liner bolts often loose, resulting from slurry

Cover bolt holes leak, coupled with the drive gear cover Mifengbuyan so easily thrown into the ring gear on the pulp, causing excessive gear wear size, shortened life expectancy in some

Start force when broken teeth.

Main bearing ball What are the causes fever? Mill main bearing spindle fever is because there are a lot of heat from the inside not out, which led to the main bearing

Overheating. When the temperature is gradually increased, the main bearing surface of the babbitt will melt, causing Burnt, resulting in ball mill can not function properly. So mill main bearing fever

This problem is users who attach great importance to our simple aspects from the following nine main bearing ball to understand the cause of overheating.

1, ball mill main bearing scraping poor contact with the hollow shaft and main bearings do not meet requirements, resulting in excessive main bearing wear, a lot of heat, causing the spindle

Watts overheating, even Burnt.

2, if the mill type of lubricant used improper selection oily bad, damaged hollow shaft and main bearings, oil viscosity is small, difficult to form a lubricating film.

3, lubrication system problems, such as oil rings with oil well, scraping the oil bodies, cloth oil cooler is not installed correctly, there is no oil filter, piping, etc. is not smooth.

4, if the mill operator is not properly grasp the oil level, oil quality, not timely refueling, can not be caused by lack of oil to replace oil mill, oil

Poor. Not a good mill main bearing lubrication, will also happen mill main bearing overheating.

5, the ball screw shaft and the hollow cylinder insulation is not good, the mill cylinder body heat is passed directly to the main bearing.

6, prolonged feeding hot materials, mainly out of the kiln clinker cooling is not sufficient, resulting in high temperature material into the mill, the mill is directly reflected in the high temperature on the main bearing

, Which is more obvious in the summer from June to August.

7, poorly ventilated mill, the mill cylinder body heat from the difficulties, as well as directly to the main bearings.

8, external cooling is not sufficient, a ball mill with water cooling, cooling water circulation main bearing on the one hand, one surface of the cylinder mill cooling, cooling water or cooling water is stopped

Deficiency may cause insufficient cooling, main bearing overheating.

9, there are cracks in the main bearing, the bearing cooling water to seep through the cracks in tile surface, undermining the good lubrication, leading to the main bearing overheating.

Yu sent us through the above mill manufacturers skilled workers analysis, we can see that the ball eventually cause various failures main bearing temperature rises, causing

Burnt main bearing overheating even if the mill spindle Burnt us how to do. Therefore, we can detect main bearing through real-time temperature and found fault mill

. When the main bearing temperature anomalies, the alarm signal is given in a timely manner to detect, prevent bush-burning and other serious accidents, to protect the safe operation of equipment.