The Pulley Diameter Analysis of the Belt Conveyor

In the designing of belt conveyor, the correct selection of pulley diameter is of great significance. The conveying belt use conditions improve with the increase of the pulley diameter. However, with the same other conditions, increasing the pulley diameter will correspondingly increase its weight, the transmission ratio,amount and size of the reducer. Therefore, the pulley diameter should not be too small to ensure delivery with normal operating conditions. Thus, traditional pulley diameter directly affects the whole cost and weighting the driving device of the conveyor belt.

In the selection of the pulley diameter, the factors below are generally considered:

1. The thickness of the conveying belt and the bending stress related to the thickness when it enlaces the pulley.
2. The total stress that the conveyor belt bears, including the pulling stress and the bending stress.
3. The maximum or average unit stress between the conveyor belt and the pulley surface.
4. The circle times that the conveyor belt bears bending load, the enlacing methods and number of its rolling the pulley.
5. The type of the conveyor belt and installation site.

For more information, please visit http://www.pkbeltconveyor.com.

Belt Conveyor Trippers Were on Their Way to Thailand

“All products meet clients’ specific requirements” is what we have promised.

Right before 5 days ago, we reached an agreement with our clients from Thailand, promising to deliver belt conveyor with tripper and circular vibrating screen what they had reserved. The belt conveyor with tripper refers to a particular equipment worked for wooden chip production line which will be settled at the top of warehouse to reach a maximum utilization rate of its space. 

Besides, their belt width are 1000mm and 650mm, length 25mm and 42mm.While circular vibrating screen is available for separating wooden chip with a size scale larger than 50mm, and stone size smaller than 4mm.

In addition, our clients are in need of metal detector, permanent magnet and drum separator as well. The permanent magnet settled at the feeding end is designed for isolating metals from material, while metal detector and drum separator are applied to eliminate the metal appeared in the production line.

Belt Conveyor Safety Operation Regulation

Belt conveyor is a kind of continuous conveying equipment. Can be widely used for quarry, coal, steel, chemical and other kinds of industries. Operating the belt conveyor safety, not only can make sure the safety of the operator, but also can longer the service life of the belt conveyor. PK machinery will introduce the safety operation regulation of the belt conveyor:

1. The belt conveyor should start without load and should not feed material until it operating regularly. Forbidden feed the material before starting.
2. Fixed belt conveyor should be installed on fixed foundation. Before the mobile belt conveyor operating officially, wheels should be holdback through triangular wedge or brake. To avoid move during operating, there should be an 1 meter channel between each machine if multi-set belt conveyor operating parallelly.
3. Before using the belt conveyor, we must check whether all the moving parts, belt buckles and bearing device is normal or not; whether the protective equipment is completely or not. Belt tensioning degree should be adjusted to the appropriate level before starting.
4. Forbidden stand on the conveyor belt.
5. If multiply sets belt conveyor connection with each other one by one, we should start the one in discharge end first, then start the other sets according to their order. You can feed the material once all of the equipment operating normally.

How to prolong lifespan of belt conveyor

Quality of belt is the main reason to impact on belt conveyor lifespan, so it must purchase the belt with high quality. Meanwhile, it should make sure that sweeper is reliable to use so that there is no material on the return belt. Otherwise, materials adhered to return belt will be taken to the surface of drive pulley and bend pulley, then it will damage belt and reduce its lifespan.
There are some problems in the use of belt conveyors sometimes, to which require you to pay attention that you can greatly extend the service life of belt conveyor.
1. If there is the phenomenon of belt slipping on drive pulley, users should find the reasons and adjust it promptly.
2. Please always check the belt connectors, if there is local damage, please repair it or replace conveyors joints.
3. Please check rollers using conditions regularly. Adding proper lubricating grease into sealing ring when making maintenance. And replace inflexible rotating rollers immediately.
4. It must add good quality lubrication into all rotating parts of belt conveyor. Please add lubrication at fixed period in accordance with the requirements.
5. Please ensure that the cleaning device has good working conditions, and the damaged components should be replaced.
6. Please check tension level of belt conveyor regularly. If the belt is loose, please tension it promptly and observe whether the belt is off tracking, otherwise it should be adjusted timely.

The application of conveyor belt fluid coupling

Fluid coupling is a used fluid transmission component. Motor drives coupling pump wheel rotation, pump impeller blade agitates intracavitary working liquid, under the centrifugal effect,pump wheel turns mechanical energy into liquid energy, then passes to the turbine blades, turbine passes the absorbent liquid energy to the machine.
Fluid coupling has the function of flexible transmission,slow down the impact and the isolation of torsional vibration, prolong the start-up time, reduce the starting current,make the motor light load start-up, solve the problem of heavy large inertia load start-up difficulties and protect the motor when overloads, energy and power saving effects are remarkable.
On the conveyor, fluid coupling has the function of connecting motor and reducer ,it replaces the mechanical coupling. The belt conveyor fluid coupling has two effects:
1.Overload protection
If the belt conveyor is overload, fluid coupling slip frequency increases, working fluid warms up, fluid coupling will spray without burning motor to a certain temperature. Of course sometimes coupling will be installed with a temperature control device, when work liquid superheats, temperature control device can control the motor and cut the power cut to protect the motor.
2. Flexible-start
When motor starts,belt conveyor starts slowly and acceleratedly , this can reduce the grid big impact to make the motor start up in light load. At the same time,it can reduce the effect of belt tension,protect belt and prolong life, especially under the heavy load start-up.

Tripper Introduction

Belt conveyor tripper is a mobile device which can unload materials at the arbitrary point of horizontal section of the conveyor; it’s a single part of the conveyor. Movable tripper can be divided into light-duty type and heavy-duty type.
► Features
    1.Durable
    2.High efficiency
    3.Simple structure
    4.Stable operation
    5.Easy to maintenance
    6.Multiple discharging points
    7.Moving freely with wheels
 

tripper

► Advantage

    1.Heavy duty structural frames and supports – to provide system rigidity

    2.Heavy duty inlet skirting – to eliminate spillage at discharge transition

    3.Abrasion resistant belting – to reduce wear and increase life span

    4.Heavy duty idlers with anti-friction bearings – to increase idler life and reduce horsepower requirements

    5.High torque drive units – to power through upset conditions 

    6.Modular design shipped with limited field assembly required for drop in, bolt in place field installation

    7.May be fitted to any new or existing conveyor

    8.Single and dual side discharge designs

    9.Evenly distribution of materials 

    10.Save storage space

    11.Powered tripper movement through cable/winch assembly or powered wheels, crowned bend pulleys for positive belt tracking 

    12.Shuttling cross conveyor belt design available with side to side movement

    13.Cross over platform/operator deck available on cross conveyor tripper

    14.Engineered to meet new project requirements and also to retrofit existing conveyors

►  Application
XLP Tripper is always used at a large belt conveyor, it applies in the occasion where the belt conveyor has a discharge requirement, such as mining, power plant, steel plant, port, etc.

Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, and Vibrating screen, Bucket elevator, Screw conveyor, 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. 

Tel: +86 373 579 9198 

Fax: +86 373 507 1699  

Email: info@pkmachinery.com  

Address: 289 Yellow River Road, Xinxiang City, Henan Province, China