显示标签为“pkmachinery”的博文。显示所有博文
显示标签为“pkmachinery”的博文。显示所有博文

2015年10月21日星期三

What Should You Pay Attention to About the Conveyor Belt with Large Angle?



Why you should pay attention to the belt conveyor with large angle? That almost because the heavily damaged by the belt which is under the overload.And then,this damaged will not only lead to the belt reversal,but cause more seriously accidient like belt broken,frame destroy.In order to avoid more damaged by the conveyor belt with large dip angle,it is necessary to learn the anti-reversal control methods.The following introduction would like to introduce the analysis detailedly.

Are you still using the capture device method to avoid this destory by the overload?You may find that it doesn't have a better real effect.Today we will show you a fresh way which you should pay attention so much.
With the anti-reversal control method,it’s better for you to adopt unidirectional rollers.
1.     When the belt goes up, the rollers will rotate accordingly
in this case, friction between upper belt and rollers is rolling friction.
2.     When the belt is breakage and upper belt goes downward slide, the rollers will not do reverse rotation
on this occasion, friction between upper belt and rollers is sliding friction. 
And then,in this way can it realize breaking.

-------------------------------------------------------------------------
Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyorVibrating screenBucket elevatorScrew conveyorand Scraper conveyor using the world's most advanced technology, we are willing to serve every company to meet your custom needs. our goal is "be the future global leader of mining machinery industry". have any questions, please contact us without any hesitation.

Henan Pingyuan Mining Machinery Co., Ltd 
Address: 289 Yellow River Road, Xinxiang City, Henan Province, China. 
Tel: +86 373 579 9198
Fax: +86 373 507 1699
Email Address: info@pkmachinery.com
Official Website: http://www.pkmachinery.com/



2015年10月15日星期四

Failure Analysis of Belt Conveyor Components

In the process of operation, failure of belt conveyor is inevitable, here PK Machinery will analyze the cause of belt conveyor failure.
1.Belt doesn’t rotate 
After start-up of the belt conveyor motor, the belt of drive pulley idles and slips, belt can’t rotate, this failure is caused by insufficient belt tension, improper adjustment of tension device, overlong length, overloading start-up, coal piled in the tail part of belt conveyor.
2. Belt is easy to break 
It is due to the large belt tension loose joint, poor quality of belt buckle, belt using for a long time, poor maintenance of belt, the solution is to tighten tension device, lower the tension ,change the new belt in time and strengthen the maintenance quality.
3. Reducer occurs abnormal sound.
The reason is due to the larger gap caused by serious wear of bearing and gear or screw is too loose, the solution is to replace the bearing, adjust the gap and repair or replace the whole reducer.
4.Reducer heats up too fast.
The reason is because of too much oil, poor heat dissipation performance, speed reducer is buried in coal pile, the solution is to adjust oil amount and remove the coal.

conveyor belt driving device drawing
5.Reducer oil leakage.
The reason is due to the damage of sealing ring, the connecting surface of reducer is not uneven, the bolt is too loose, the solution is to replace the sealing ring, tighten the connecting surface and the bearing cap bolts.

reducer of belt conveyor
 
6.Roller doesn’t rotate.
It is because of the damage of roller bearing, when coal powder enters into the roller sealing ring on both sides, it will be blocked and not rotate which makes the roller bend due to the large stress. The solution is replacement roller, reduce the height of discharging point and the landing point, or use the shock-proof roller at the landing point.

scheme drawing of conveyor belt

2015年10月8日星期四

belt conveyor for raw material in cement plant

Fixed/ stationary/ long distance/ overland/ heavy duty belt conveyor is continuous material handling equipment for loading and unloading material horizontally or aslant such as bulk material, lump material, and package goods.
Fixed conveyor belt consists of transmission device, frame, conveyor belt, pulleys, rollers, tensioning device, sweepers, hopper, gathering sill, etc.
Stationary conveyor belt is widely used in mining, metallurgy, coal, power plant, port, etc.



Thank you for your watching.

Web: www.pkmachinery.com
Email: pk@pkmachinery.com
Tel: +86-373-5799198
Fax: +86-373-5071699

2015年9月17日星期四

Maintenance Tips of Conveyor Belt

In the use and storage of conveyor belt, it should kept clean, avoid direct sunlight or exposed to rain and snow, prevent contact with acid, alkaline, oil, organic solvent and other substances, and also located at least one meter away from heating device. The temperature of the storage should maintained at between 18-40 ℃ , the relative humidity should maintained between 50-80℃.In the storage period, conveyor belt should be placed in rolls, but not folding; in the placement, it should turn-over once in every seasons. Different types and standards layers number of conveyor belt should not be connected together while used, the best connection is used the bonded process. Type, structure, standard, number of layers for conveyor belt should be used according to the reasonable choice.

maintenance of conveyor belt
 
Conveyor belt operating speed generally not more than 2.5 m/s. For large lump size, material with large abrasiveness and fixed unloading device should use low velocity. The relationship between driving pulleydiameter and coating layer of conveyor belt, supporting of driving and bend pulley and also requirement for trough angle of idler roller should according to the design specification of conveyor belt, reasonable selection. Direction of feeding should along the operating direction of the conveyor belt, use chute in order to minimize the impact of material fall on receiving belt, reduce material’s free fall distance. The feeding section of conveyor belt should shortened the spacing of idler and use absorber idler as discharge section. The belt should use striker plate with moderately soft, to avoid the rigid striker plate will scrape the belt surface of conveyor belt.

coking coal belt conveyors