Scraper Conveyor

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About Scraper Conveyor

WHAT IS A SCRAPER CONVEYOR?

A Scraper Conveyor (also known as a drag conveyor or slat conveyor) is a mechanical system used for horizontal or inclined transport of bulk materials, chips, swarf, dust, or sludge using scraper blades that drag the material along the bottom of a trough or channel.

WORKING PRINCIPLE

Material (chips, dust, sludge) enters the conveyor trough.
Scraper plates mounted on a chain or shaft move continuously inside a closed or semi-closed channel.
The scrapers drag the material along the bottom surface toward the discharge point.
Material is collected, dumped, or sent to bins, and the chain/scrapers loop back to collect more.

TYPES OF SCRAPER CONVEYORS

Type	Description	Application
Horizontal Scraper	For floor-mounted horizontal transfer	Chip collection, ETP sludge
Inclined Scraper	Moves material at an angle (up to 60 deg )	Loading into bins, presses
U-type/Channel Type	U-trough with chain drag system	Swarf and sludge
Flat Bottom Type	Scrapers move over flat bed	Dry chips and dust
Heavy-duty Scraper	For high-load handling	Steel plant, furnace slag

KEY TECHNICAL FEATURES

Parameter	Typical Range
Conveying Capacity	50 kg/hr to 10 TPH
Trough Width	100 mm to 800 mm
Conveyor Length	1 m to 30 m
Incline Angle	0 deg to 60 deg
Chain Type	Roller chain / Pin bush / Drag chain
Scraper Material	MS, SS304, Hardox, Nylon
Housing Material	MS powder-coated / SS304
Motor Power	0.5 HP to 5 HP
Discharge Height	As per design

APPLICATIONS

Metal & Machining:

Chip removal from CNC/VMC machines
Swarf handling in centralized filtration
Coolant sludge conveying

Heavy Industry:

Foundry sand removal
Furnace slag and ash handling
ETP/STP sludge movement

Others:

Press scrap handling
Food industry waste transport
Bulk powder transport (with dustproofing)

ADVANTAGES

Handles wet, dry, fine, or coarse materials
Rugged and compact design
Ideal for automatic chip removal
Suitable for continuous or batch operation
Customizable for length, layout, discharge

SELECTION CHECKLIST

Selection Criteria	Consideration
Material Type	Chips, sludge, powder, wet/dry
Flow Rate or Load	Kg/hr or TPH
Horizontal or Incline?	Affects drive power and trough design
Trough Width & Length	Site space and layout
Chain Type & Strength	Depends on material load
Maintenance Access	Inspection covers, cleaning ports
Oil or Coolant Handling	Requires sealed troughs/drainage

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