Saturday, February 27, 2016

How to Resolve Chain Deviation of Buried Scraper Conveyor

1. Check installation quality and take measures to correct mounting dimensions.

1) Check and adjust the flange connections between conveyor casings, make sure the connections are smooth and tightly sealed.

2) Adjust the clearance between chain and conveyor trough. The appropriate clearance value will guarantee the conveyor to operate normally, reduce energy consumption, extend the service life of chain scraper & conveyor trough, and improve transport efficiency.

3) Check and adjust the surface flatness of guide rail. The joints between guide rails should be smooth.

4) Check and adjust head and tail pulleys, which should be on one center line and correct meshing.

5) Correct and replace the deformed scrapers.

6) Repair and replace the worn-out guide rails.

7) Adjust the tension device, make sure the elastic of chain & scraper is moderate, and the tensile force of left and right sides are the same.

2. Adjust material drop point.
Material impact is one of important factors that cause chain deviation. The solution is to install a retaining plate at the inlet. In this case, the material will fall in the middle position of scraper & chain to make sure the chain will be uniformly forced, so as to reduce chain deviation.

3. Install baffle plates on both sides of the chains to prevent deviation phenomenon.

Wednesday, February 17, 2016

How to Select a Proper Scraper Conveyor

1.Name of material __
2.Material density __ t/m3
3.Handling capacity of conveyor__ t/h
4.Temperature of material__℃.
5.Average particle size __mm, max.particle size__mm.
6.Level or inclined conveying?
If level, please inform distance between inlet and outlet__m
If inclined,please inform level conveying distance:__m,
Vertical height:__m
Inclined angle:__°
7.Voltage:__V, frequency__HZ,3phase,driving device brand:__
8. Ambient temperature__℃.

scraper conveyor

Thursday, December 24, 2015

Scraper Chain Selection Principles (1)

The reasonable selection of scraper and chain depends on its structure form, chain pitch, scraper pitch and material of construction. When choosing, people should pay special attention to meet the requirements of production capacity, and make the scraper & chain have the adaptability to material.

1. Selection of Scraper Structure Form
The scraper structure form determines the transportation effect of buried scraper conveyor. It could get a good effect through the reasonable selection of scraper. Otherwise, the improper selection of scraper may cause poor transportation effect, even failure.

On the condition of meeting the adaptability to material, the selection principle is to choose the scraper simple in structure. In the specific use, the scraper can be chosen according to the material features (viscosity, suspension property and fluidity), conveyor trough width and conveyor arrangement form. 

1) The material has good transportation property: the scraper in simple shape is preferred, such as T-type, V-type, U-type, etc.
The material has small internal friction coefficient, strong suspension property and high fluidity: complex shape scraper should be used, such as H-type.

2) The material has heavy viscosity, or the viscosity becomes big after the material moisture absorption: in order to reduce the material adhesion on the scraper, and unload and clean material easily, it is better to choose simple structure scraper, such as T-type, V-type, U-type, etc.

3) The material is easy to float chain: the scraper can be inclined position welded.

4) The trough width of buried scraper conveyor is smaller: it is appropriate to use simple shape scraper. When the material with large bulk density is transported in bigger conveyor trough, in order to increase the scraper rigidity, it is recommended to use O-type scraper with diagonal strut. 

5) The buried scraper conveyor is horizontal installation: T-type, U-type or V-type scraper is generally used.
Conveyor vertical installation: V-type and U-type scrapers in outward form arrangement are usually chosen.
Z-type buried scraper conveyor: V-type scraper in inward form arrangement.
Ring-lock (MK type) buried scraper conveyor: V-type scraper in outward form arrangement.
Planar ring structure (MP type) buried scraper conveyor: L-type scraper in outward form arrangement.
Facade ring structure (ML type) buried scraper conveyor: V-type scraper in outward form arrangement. 

Friday, December 18, 2015

Troubleshooting of Buried Scraper Conveyor

Deviation of chain scraper
1.         The whole equipment installed improperly; casing straightness is too large; wheel axle deflection; head, tail wheel misalignment.
2.         casing transmutation
3.         Tail wheel inclines after adjusting the take-up unit
1.checked the  installation quality
2.Adjusting the casing
3. readjustment
Chain scraper break
1.         Chain wear
2.         The conveyor Overloading operation result in the strength is not enough.
3.         Some hard material fallen into the closed trough and locked the scraper
1.Change chain
2.Eliminate long time overloading operation
3. After manual discharging the machine should feeding uniformly
Chain scraper bent result in break
1.         Casing are not straight
2.         The location of flange is offset then locks the scraper.
1.checked the  installation quality
2.dismantled original installation and install it again
During the operation of chain scraper, it gives out excessive noise
1.         Some hard material fallen into the closed trough
2.         Some chain with looseness or Inflexible faults
1.clear debris
2.change chain
Head wheel not fit in with chain scraper well
1.         Head wheel chain inclines; Casing misalignment
2.         The chain is wearing out after long time operation
1.rectify head wheel shaft
2.change chain

Monday, December 7, 2015

Have You Known the Type of Scraper and Chain of Buried Scraper Conveyor?

Scraper chain is not only the traction artifacts of buried scraper conveyor, but its bearing components.It is usually made of different types of chain scraper and welded together.Whether scraper chain to choose properly or not will directly affect the transmission effect of buried scraping machine and running effect.Here PK Machinery will introduce the basic type of scraper and chain used for buried scraper conveyor as follows.
ms scraper-chain-conveyor

In order to meet the actual needs of buried scraper conveyor various operations, according to the nature of the material being conveyed, different machine groove width and transport capacity of the conveyor, a variety of types of blades and chains.
(1)The types of the scraper
According to the shape classification:
1.flat scraper (such as T-type)
2.framework scraper (such as U-shaped, V-type, H type)
3.a side pull type scraper (such as L-type)
4.three-dimensional angular blade or the like
A U-type & V-type scrapers: widely used and suitable for horizontal, inclined and vertical transmission
B T-type & L-type scrapers: apply to horizontal transmission
C H-type scrapers: appropriate for square cross section conveyor
D cleaner scraper: blade mounted on the bottom and sides of the rubber, neoprene, leather or canvas cleaning sheet to remove left in the machine residual material shell, but also to prevent the most viscous material bonded to the inner wall of the housing, when pumping viscous materials can be 5 to 10 mer install a particular type of blade every such.


(2)The types of the chain
1.Bush roller chain:flexible rotation, low friction in meshing process, low specific pressure and small abrasion/the chains must be replaced in pairs if its weight heavier 
2.Die forging chain: simple structure, light weight, high strength, reliable operation and convenient assembling & dismantling
3.Double chain: 
1)advantage:high carrying capacity, reliable operation and convenient assembling & dismantling
2)disadvantage:heavy weight,so that it can’t be designed according to equal strength 

scraper and chain

Saturday, November 7, 2015

The Basic Installation of Buried Scraper Conveyor

The Basic Installation of Buried Scraper Conveyor

Any device in the production process is completed, we need to install before they can be precisely later normal production. How to properly install buried scraper conveyor has become the decisive factor whether it can run properly, let's take a look masse installation steps:
1.Location: First fix the position of the nose and tail, and then fix the center line buried scraper conveyor.
2.Laying in the middle slot: The conveyor centerline fixed for laying in the middle slot. Laying flat surface conveyor needs, as there are within conveyor plane excessive bending, it will inevitably lead to discontinuity two chains, accelerated wear chain and groove wall, and even card chain.
3.Installation nose and tail: the nose and tail should leave some space, ease of maintenance and repair, wheel centerline perpendicular to the centerline of the conveyor, and the level of assurance.

Buried Scraper Conveyor

4.Install scraper chain: Before installing the scraper chain, should be pre-connected, the blade should be uniformly distributed in the chain, the chain length should be equal, without reversing the phenomenon.
5.Check and idling: After conveyor installed, should be fully checked and start conveyor. Idling two hours, mainly the drive means and the blade is functioning properly, at the same time, adjust the length of the chain.
6.Check: First, head to the upper and lower scraper chain connected. ? Then pull the tail section or the lower scraper chain, the scraper chain tension, and finally take the appropriate length, and at the end of the scraper chain link. At this point, the host and are installed scraper chain

Buried Scraper Conveyor chain

Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, and Vibrating screen, Bucket elevatorScrew conveyorScraper 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  
Address: 289 Yellow River Road, Xinxiang City, Henan Province, China

Thursday, October 22, 2015

Useful Maintenance Tips of Scraper Conveyor Chain,You Cannot Miss

Useful Maintenance Tips of Scraper Conveyor Chain,You Cannot Miss

In the process of transporting materials,scraper conveyor chain is the most important component of scraper conveyor. So for users, it's necessary for you to know how to maintain and repair chain. Here we will analyze the useful maintenance tips which you cannot miss as follows.

Before Using Tips

1. Ensure all pins are are fastened before using scraper chain
2. Check the scraper chain and keep maintenance records regularly
3. Inspect tension degree of scraper chain and keep it reach required torque

After Using Tips

1. Carry out periodic inspection and measurement
2. Adjust the tension of chain in time when scraper chain slack is found, or abnormal sound of guide rail rack hitting
3. Ensure the joints between chains could move freely when changing new chains
4. Inspect whether head of scraper conveyor parts is deformation or falling off

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:
Official Website: