more about belt conveyor

Friday, March 4, 2016

How to Extend the Service Time of Belt Conveyor

One main factor of impacting the belt conveyor service time is the conveyor belt quality. Therefore high quality of conveyor belt is required in purchasing. Another main factor is that the sweeper is highly reliable to make sure no more material adhered to the return belt, in case they are next sent to the surface of the drive pulley and bend pulley, thus bring damage to the belt and shorten its service time:

Fixed belt conveyor 01
  1. Due to how to greatly expand the service time of the belt conveyor, Followings are some suggestions:
  2. Avoid belt slipping on the drive conveyor pulley. Please find the reason and give prompt adjust if slipping appears.
  3. Check the conveyor belt joints frequently. Damaged conveyor belt joints should be repaired or replaced in time.
  4. Check the service condition of the belt conveyor roller regularly. Properlubricating grease should be added into the sealing machine in the maintenance, and also inflexible rotating rollers should be replaced immediately.
  5. High quality of lubrication should be added into all rotating parts of belt conveyor periodically according to the requirement.
  6. Ensure the good work condition of the cleaning device and replace damaged parts in time.
  7. Regularly check the conveyor belt tensity. Prompt tension is needed if the belt is loose. Meanwhile please notice the belt position, timely adjust should be made when it’s off tracking.
Movable belt conveyor 02

Thursday, March 3, 2016

Why will Belt Conveyor Pulley Wear?

Belt conveyor is a kind of common conveyor equipment, often used in a variety of material transportation with large throughput, stable performance. In the process of using, pulley may occur wearing, this phenomenon is caused by two reasons:
One reason is that the design gap between roller bracket and pulley is too small, at the same time, building foundation hole vertical distance is less than the pulley support distance.In the process of belt running, overlarge belt tension will result in the change of its traction.Return accretion has not been cleared up, which will form accumulation debris and occur rubber friction.For design factors,as the space between pulley stents and pulley is too small, and the base hole of the vertical distance is less than the pulley support distance, it is not easy to handle timely, which is the main cause of pulley rubber lining wear.
Work environment factor is the second reason leads to rubber lining equipment damage phenomenon.

Wednesday, March 2, 2016

Belt running deviation and skid processing method of belt conveyor

  • Running deviation has many reasons, according to the different reasons , we need to different treatment:
  1. Adjust the carrying idler group.
  2. Install the self-aligning roller group.
  3. Tension adjustment, tension adjustment is an important link of belt conveyor running deviation.
  4. Adjust the driving drum and redirection roller position. And the adjustment of the redirection roller driving drum is an important part of the belt running deviation adjustment.
  5. Two-way adjust deviation of belt conveyor.
  • Belt skid treatment method:
  1. Adjustable tension when the belt conveyor in skid trip to increase tension. Sometimes tensioning trip has not enough, however, belt in the permanent deformation , the belt can be cut part to and sulfide.
  2. In the use of nylon belt or EP,tension travel is longer,  when tension trip has not enough, sulfide or increase tension to solve.
  3. Heavy hammer tensioning belt conveyor belt skid can add weight to solve,  added until not skid. But should add not too much, avoid belt  bear too much unnecessary tension and reduce the service life of the belt.

Friday, February 26, 2016

Matters should be noted during belt sway switch installation and adjustment

Matters should be noted during belt sway switch installation and adjustment

Belt sway switch is used to check the belt running deviation of the belt conveyor, it is a safe protection device of automatic alarm and stop when the belt running deviation appears.Belt sway switch is fixed on the conveyor belt bracket, action bar is at the side of the belt, when the belt running deviation appears, force the action bar deviation, and touch the alarm micro switch. If the belt running deviation continues,will touch another group of contact, and the conveyor will be protective to stop.
In the installation and adjustment of belt sway switch, what matters should we pay attention to? PK Machinery will answer for you!
1. Belt sway switch should be located on both sides of the conveyor belt, the vertical roll should be vertical with conveyor belt edge flat, and both sides of the conveyor belt are located at 1/3 height of vertical roll.
2.The distance between the vertical roll of belt sway switch and the normal position of conveyor belt should be 50 ~ 100 mm.
3.The quantity of belt sway switch ought to be determined according to the length of the conveyor, types and arrangement. Commonly it is located on the conveyor head, tail, convex segment, concave segment and the middle position.(Note: when the conveyor is longer, a pair of belt sway switch can be located every 30 ~ 35 m.)
4.Belt sway switch connects the conveyor middle frame through the mounting bracket, switch bracket will be welded with conveyor frame after the installing completion of the conveyor, and belt sway switch shall be bolted in the bracket.

Saturday, February 20, 2016

Do You Know the Installation Position Requirement of Belt Weigh Scale

The belt weigh scale measures bulk solid materials of the belt conveyor automatically and continuously, it can measure instantaneous throughput and total cumulative throughput. The belt weigh scale is widely used in industrial feed-in automatic continuous weighing and automatic Ingredients weighing.
Do you know the installation position requirement of the belt weigh scale? PK Machinery will answer for you!
1.The belt weigh scale should be installed in a linear segment of the belt conveyor.
2.The installation place should be where belt tension of belt conveyor change least, installing near the tail is ideal. When installed in the tail ,the distance between the belt weigh scale and the loading point should be not less than 5 ~ 9 meters, at the same time the distance between plate and The belt weigh scale shall not be less than 3 ~ 5 drag roller spacing.
3.When the belt weigh scale must be installed near the concave belt, should ensure that it is installed on the conveyor line segment and ensure that the entire loading place before and after the belt weigh scale at least four drag rollers are closely contacted with belt.
4.When the belt weigh scale must be installed in the vicinity of a convex arc curve, should ensure that there are no arc belt in the vertical direction between the loading point and the belt weigh scale .the arc segment must be 6 m or 5 times drag roller roller spacing outside the weighing segment dragged.
5.When the belt conveyor has mobile discharger, should comply with the requirements of the "(3)", at the same time ensure when running the belt centerline always match together with the belt weigh scale centerline.
6.To guarantee the accuracy of the belt weigh scale measurement, the belt conveyor should have only one loading point.
7.In order to ensure the measuring accuracy, the capacity of the belt conveyor should be in the range of 20 ~ 120% Qmax.


Friday, February 19, 2016

Ways to Maximize the Performance of Belt Conveyor

During application of belt conveyor, it is beneficial to reduce operating resistance by using high precision conveyor rollers and high performance belt. Revolving resistance of rollers and forward resistance of belt conveyor account for 50% main resistance in belt conveyor. If the belt conveyor length is more than 80m, main resistance will be influenced by device condition, friction coefficient related to real working condition, conveyor length, rotating quality in unit length of roller, belt quality, material property, etc.
Apart from above mentioned influential factor, we can refer to the following ways to maximize the performance of belt conveyor:
1.Reduce or adjust belt deviation;
2.Add lubricating oil to components of belt conveyor;
3.Clean up the sundries produced in transportation promptly;
4.Tension force of belt conveyor should be adjusted the best status;
5.Please add oil to conveyor pulley at fixed period to ensure smooth rotation;
6.It’s better to adopt vulcanized joint, though it costs too much money, it can keep a longer service life(especially suitable for fix belt conveyor).

Thursday, February 18, 2016

How to Select Belt Conveyor Pulley?

You need to provide following parameters before you purchase belt conveyor pulley.
1.Diameter of pulley wall(not include rubber thickness):_________mm.
2.Length of pulley wall:___________mm.
3.Diameter of pulley Shaft:_________mm.
4.Length of pulley Shaft:___________mm.
5.Material of Pulley wall:______________.
6.Material of Pulley shaft:_____________.
7.Bearing brand:_____________.
8.Keyless Locking Devices brand:____________.
9.Surface treatment:______________(coating rubber/galvanized/other)
(1)If coating rubber,thickness of rubber:__________mm
(2)Rubber type:____________(herringbone/rhombus/other)
10.Pulley type:_________(ordinary pulley or motorized pulley)

If motorized pulley,please confirm following information:
(1)Motor installation type:______________(exterior installation or interior installation)
(2)Motor Power:_________Kw.
(3)Motor Voltage:3 phase ______V______Hz.

Besides,in order to ensure conveyor pulley to meet your needs,please confirm the conveyor information:
1.Handling Capacity:________t/h.
2.Belt speed:__________m/s.
3.Driven device Power:_____________kw.
It’s better that if you can provide pulley drawings!