What is the character and feature of Belt Conveyor Buffer Bed?

Buffer Bed is mainly used for vibration damping protection of conveyor belt at material discharging point. When the material fall down, buffer bed uses its own elasticity to minimize the impact force when material falls down on the belt to ensure normal operation of belt conveyor. In addition, the buffer strip of bed surface consist of five million ultra high molecular polyethylene plates,which contacts the belt surface well to reduce the friction coefficient to the minimum.Here PK Machinery introduce the main characters and features of belt conveyor buffer bed.  
Main characters of belt conveyor buffer bed
1.The smooth UHMW PE surface reduces friction coefficient of conveyor belt and impact strip to minimum.Thick polyethylene layer is more widely used and durable.
2.The front and back of polyethylene surface form into a curved surface, thus ensuring the smooth passing by of the conveyor belt.
3. The excellent performance of the special rubber layer can effectively absorb the momentum when material falling down.
4. Each part of buffer strip is combined with hot vulcanization, compact and firm.

 

Main characteristics of the belt conveyor buffer bed
1. No moving components, low daily maintenance cost.
2. Even bearing force, large supporting area, small belt sagging, damage and materials dropping.
3. Strong absorption of impact energy.
4. Suitable for all kinds of belt width and angle.
5. It can withstand strong impact.
6. Quick and easy installation, easy to check and replace.
7. It can be installed at the conveyor belt blanking point.
8. Prolong the belt life.

How much knowledge do you know about belt conveyor magnetic separator ?

When customers purchase belt conveyor, they only provide conveying material name, but seldom mention whether the material contains other impurities or not.For example, if long and big iron contained in the material, it will be easy to scratch the conveyor belt, so magnetic separator plays an important role.In this article,we will introduce the magnetic separator as follows:
Magnetic separator is applicable to various fields deironing, which can realize continuous iron absorption and removal.
Please pay attention to the conveyor belt, bandwidth, dip angle, material properties, moisture, material thickness an iron content percentage, the nature of the magnetic material, as well as the deironing requirements and the environment condition to select a suitable magnetic separator.
Magnetic separator can remove the ferromagnetic impurities which are mixed in material, to ensure the safe and normal transmission system work of the crusher, grinding machine and other mechanical equipment,at the same time it can effectively prevent belt scratch caused by the large, long iron besides,the grade of raw materials can be significantly improved.

Application of Sidewall Belt Conveyor in Thermal Power Plant

1.Requirements
Sidewall belt conveyor is the major equipment to convey coal and lime-ash in thermal power plant. Therefore it has high requirements for the security of equipment. Generally speaking, the whole transit line is equipped with twin channel sidewall belt conveyor, one is put into use, another is as standby application device. Thus, this coal handling system must be equipped with sidewall belt conveyor with 2500m-3000m length. Applying sidewall belt conveyor to thermal powder plant, it can not only simplify procedure, but also save cost.
2.Features
Due to power plant has high requirements for the security of equipment, technical requirements of sidewall belt conveyor are as follows:
1) It has different requirements for belt conveyor when it used to receive, convey or discharge materials. For instance, if the belt conveyor is used to receive materials, the belt speed of it shouldn’t be too high. If it is used to convey materials, it requires that trough angle of idler decrease properly. If plow discharger is put into use, the cover rubber of belt surface should be thicken properly.
2)The belt speed should be low. Belt conveyor is mostly arranged in workshop, so it has high requirements for coal dust control. According to domestic and foreign practical experience, it’s better to adopt lower speed.
3)After installation of this machine, it seldom changes its layout.
4)Different coal type has different requirements for belt conveyor. For example, large coal particle size needs impact idler with high quality. Coal with less water and more dust needs guide chute with good sealing. 

Type and Function of Fixed Belt Conveyor Roller

Roller is used to support the conveyor belt and carry of the material, to ensure the stability of the conveyor belt.
In general, the fixed belt conveyor roller is the following:
1.Trough roller: it is also known as carrying roller which is used for carrying bulk material;
2.Parallel roller: parallel upper roller is used for carrying materials, parallel lower roller is to support the return branch of the conveyor belt;
3.Self-aligning roller: it includes taper aligning supporting roller and friction aligning roller which are mainly used for adjusting the belt deviation to avoid S-shaped, so as to ensure the stable operation of conveyor belt;
4.Impact roller: it is installed in the lower part of the conveyor belt, which can reduce the impact of the conveyor belt to extend the service life of the conveyor belt;
5.Return roller: it supports the conveyor belt of lower branch,including parallel type, V type, inverse V type,etc. V and inverse V type roller can reduce the conveying belt deviation possibilities;
6.Transition roller: it is installed between the drum and the first set of roller, which makes the conveying belt gradually turns from through shape into or flat shape and reduce additional stress of the conveying band edge turns to trough shape due to the expansion, at the same time,it can prevent the material spreading phenomenon of conveyor belt.
In addition, the comb type roller and screw roller, which can remove the sticky material on conveyor belt to keep the conveyor belt clean. 

Reason Analysis for Rubber Falling Off the Belt Conveyor Pulley

 Rubber falling off the pulley is one of the common trouble of belt conveyor,after many years of practice and analysis, the reasons are as following:
1.The wrapping angle between pulley and belt is too small.
Peripheral force of driving pulley is transmitted to belt by friction.In running,in order to avoid slipping between pulley and belt,the belt tension is not allowed too big.According to Euler’s Formula,if the wrapping angle is smaller,the belt tension will be bigger,so it’s easy to slip.Slipping will speed up the wear of pulley.
2.Water or wet material stick on the belt surface.
When transporting material contents dust,like coal,ore and so on ,we usually use water spray to remove dust,thus water will be mixed with material and stick on belt surface,besides,rain will also lead water sticking on belt, once water sticks on belt surface,the friction coefficient between belt and pulley will decline which will cause slipping between belt and pulley,and speed up the wear of pulley.

3.The tension is too small.
Tension device is very important to conveyor pulley,if the tension is too small,it will lead to slip,causing wear of pulley,when the tension distance is not enough and the belt with permanent deformation,we can cut a segment of belt,then vulcanize again.
4.The failure of cleanser.
The failure of cleanser can result in the adhesive materials entering into belt and pulley,causing wear between belt and pulley, thus the rubber cover will fall off the pulley,and reduce the service life of belt.
5.Belt conveyor material scattering .
Belt conveyor material scattering is a common problem,when the material scatter during machine running,a portion of material will enter into belt and pulley,which will cause the wear of rubber surface and belt.

Daily, Weekly, Monthly Belt Conveyor Check&Maintenance Work

When using the belt conveyor, less daily check and maintenance or do not pay attention to maintenance will greatly reduce the service life of the belt conveyor, when the belt conveyor problems occur, it will affect the work efficiency, so regular inspection for belt conveyor parts is needed.
Daily check
Mechanical items: inspect the guardrail, bridge, roller, pulley, turnabout pulley and belt.
Electrical items: inspect the anti-skid device, deviation switch, emergency stop switch, tear detection device, anti-reverse device.

Weekly check
Mechanical items: inspect the driving wheel, guide wheel section, reducer, inspect the machine's tail, check tensioning device and pull rope device.
Electrical items: inspect the main motor, inverter, filter, repair and inspect the main transformer wiring, electrical control, power system.
Monthly check
Mechanical items: inspect the rope wheel, transition wheel, guide wheel, driving wheel, belt wheel, tensioning car and check the oiling.
Electrical items: inspect the fastening bolts, fast switch; the maintenance and repair of commutator, limit protection, emergency stop protection and the alarm system. 

 

Notice! Prohibit the following things during the operation of mobile belt conveyor

Notice! Prohibit the following things during the operation of mobile belt conveyor

During the operation of mobile belt conveyor, if we operate it in the wrong way, it may lead to short service life, conveyor damage, even hurt the operator, please see the following things which are prohibited during the operation of the mobile belt conveyor:
1. Prohibit turning on the switch before making sure all nuts and bolts are tighten.
We usually disassemble the mobile belt conveyor during transport process. Customer needs to assemble it on site. If the nuts and bolts are loose, they may fall off during operating, thus, it will be a great potential safety hazard.
2. Prohibit changing the conveyor head direction before shutting down the switch.
Please shut down the switch first if when you want to change the conveyor head direction, or it will be easy to hurt the operator.
3. Prohibit moving the conveyor before shutting the switch
Mobile belt conveyor is a kind of light- weight conveyor, it can be moved anywhere, however, please shut down the switch first before moving it to ensure the safety of the operator.
4. Prohibit standing under the conveyor.
Please note, prohibit standing under the conveyor no matter operate the conveyor or not.

Portable Belt Conveyor