Feeding Material in Proper Order of Buried Scraper Conveyor

Equipment failure happens when improper operation made in the running process of buried chain scraper conveyor. Please pay attention to the the material feeding sequence.

During material conveying, turning on the device at the first place and opening feed inlet afterwards. In this case, scraper conveyor would not be filled with material avoiding unnecessary losses because of overload motor. When material conveying finished, turn off the slide damperor or the power of the discharger firstly, stop material feeding and turnoff squeegee machine after clean up the material in the conveyor chamber. It will prevent the material accumulation in the equipment avoiding material moisture and agglomeration.

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Difference between forging and casting of scraper chain machining process

Forging and casting is commonly used in the mechanical processing of scraper chain, but do you know the differences? Today, PK Machinery will introduce it in details.
Forging is a processing method which uses the forging machinery occurs pressure to metal blank, make it produce plastic deformation to obtain a certain mechanical properties, a certain shape and dimension.
Casting is the process thatmakes the metal melt into a certain requirements of liquid and pour into the mold, after cooling, solidification, and cleaning the whole process to obtainwith a predetermined shape, size and performance of the casting (parts or blanks).
Generally forging chain mechanical properties are generally better than the same kind of casting chain, but the cost is higher. Although the cost of casting is low, but the production needs more materials and equipment, it will produce dust, harmful gases and noise which will pollute the environment, so we will choose forging chain as the traction component of scraper conveyor in most cases.

How to Choose the Scraper and Chain of Buried Scraper Conveyor? (II)

1. Selection of  Scraper Conveyors Chain
On the basis of meeting the adaptability to material, the chain should be selected reasonably according to maximum working load.
1) Bush roller chain should not be used for dust conveying, and should be first selected to transport the material which is easy to float chain. But in general, die forging chain is used as the first choose.
2) Base on the assurance of maximum chain working load, in order to maximize its carrying capacity,
it is best to use the chains which allowable load is close to maximum working load.
3) On the condition of meeting strength requirement, it should be try to reduce chain weight.
4) Different kinds of chains are used for different arrangement form.
MS / MC / MG buried scraper conveyors: three types of chains can be used, bush roller chain, die forging chain and double chain.
MZ / MP buried scraper conveyors: die forging chain
MK / ML buried scraper conveyors: die forging chain and double chain

2. Selection of Chain Pitch

The selection principle is to minimize the maximum dynamical load and up & down movement speed of chains. If the chain shake is too big, it will destroy normal material transportation, especially vertical conveying. And big dynamical load will lead to the increase of chain weight or decrease of its service life. 
3. Selection of Scraper Pitch
The scraper pitch can be determined according to the conveyor trough width, but it must be adaptable to chain pitch. If the scraper pitch is too big, it can lead to relative slippage between various material layers in conveyor trough, so as to increase energy consumption and even destroy normal material transportation. On the contrary, too small scraper pitch will increase the traction weight and energy consumption. 
The scraper pitch generally equals to chain pitch. When the load is small, the scraper pitch can be chosen the twice of chain pitch. Meanwhile the material features should be taken into consideration, for example, when conveying viscous material, the manufacturer can install a special form scraper, to remove the sticking of material inside conveyor trough, and prevent most viscous material bonded on the inner wall of conveyor trough.

Introduction of Grain Scraper Chain Conveyor

CUSTOMER REFERENCE LIST (YEAR 2012-2014)
NO.	EQUIPMENT	VENDOR'S SCOPE OF SUPPLY	QUANTITY	TIME
		PROJECT LOCATION
8	Scraper Conveyor	Ukraine	1 Set	20120829
16	Scraper Conveyor	Russia	4 Sets	20121119
23	Scraper Conveyor	Russia	12 Sets	20130516
55	Scraper Conveyor	Pakistan	2 Sets	20150220

► Introduction
Grain scraper chain conveyor is a light type buried scraper conveyor. It is widely used to convey grain such as soybean, wheat, rice, flour etc. Compared to the ordinary type, the casing thickness of QMS type is smaller, thus lose the whole weight and save money.

► Working principle
When conveying in horizontal direction, under the constraints of material weight and casing sidewall, producing internal friction between the materials. The material can be conveyed forward along to the scraper chain, form a continuous whole material flow. When conveying in vertical direction, because of the constraints of material arch camber, weight and casing sidewall, producing internal friction that prevent the material falling down. The material can be conveyed upward along to the scraper chain.

►Features
1,Grain buried scraper conveyor is completely enclosed for clean plant operation
2.Large capacities for conveying in a compact space
3.Higher conveying speed
4. Can reach multipoint charging and discharging
5.Variety of side & bottom abrasive resistant steel liners
6.Liner fasteners that are positioned clear of material flow.

►Applications
It is widely used to convey grain such as soybean, wheat, rice, flour etc.