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    Gravel Pump – SG

    Gravel Pump-SG is a centrifugal gravel pump designed for continuous transportation of slurry containing large solid particles that cannot be handled effectively by conventional slurry pumps. With a single casing structure, clamp band connection and wide flow passage design, the pump provides excellent solid passing capability and reliable wear resistance under abrasive working conditions. The wet-end components are manufactured from high wear-resistant alloys, making it suitable for sand, gravel, rocks and mining debris transportation. SG Gravel Pump is widely used in dredging, river sand extraction, mining, metallurgy and other applications requiring stable handling of coarse and abrasive materials.

    Key word:

    Slurry Pumps,Gravel Sand Pumps

    Category:

    Gravel Pump

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    info@slurrypump-hb.com

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    Need help selecting model? Contact our engineer.

    Products detail

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    Product Overview

    The Gravel Pump – SG is designed for continuously transporting slurry containing large solid particles that are too large or abrasive to be handled by conventional slurry pumps.

    Unlike standard slurry pumps, this type of gravel pump features a wider flow passage and stronger solid handling capability, allowing smooth transportation of materials such as gravel, sand, rocks and mining debris.

    The pump adopts a single casing structure connected by clamp bands. The wide wet passage design helps reduce blockage risks and improves reliability when handling coarse materials with high abrasive characteristics.

    The pump is widely used in:

    • Dredging operations
    • River and channel excavation
    • Sand and gravel extraction
    • Mining slurry transportation
    • Metallurgical slag handling

    Gravel Pump Design Features

    Single Casing Structure with Wide Flow Passage

    The pump adopts a single casing structure with clamp band connection.

    The wide wet passage provides:

    • Improved large particle passing capability
    • Reduced blockage risk
    • Better slurry transportation performance
    • Easier maintenance

    This structure is especially suitable for applications where solid particles are too large for conventional slurry pumps.

    Wear Resistant Wet-End Components

    The wetted parts are manufactured from abrasion-resistant materials including:

    • Ni-hard alloy
    • High chrome alloy

    Main wear components include:

    • Impeller
    • Pump casing
    • Back liner
    • Expeller
    • Throat bush

    These materials provide excellent resistance against abrasive slurry and help extend service life under severe operating conditions.

    Excellent Cavitation Performance

    The hydraulic design provides good NPSH performance, making the pump suitable for applications with difficult suction conditions.

    Typical applications include:

    • Dredger suction systems
    • River dredging
    • Sand recovery operations

    360° Adjustable Discharge Direction

    The discharge direction can be oriented in any position within 360°.

    Advantages include:

    • Flexible installation
    • Easier pipeline arrangement
    • Improved adaptability to different site conditions

    Flexible Shaft Sealing Options

    The pump can be equipped with different sealing configurations according to operating requirements.

    Available options include:

    • Packing seal
    • Expeller seal
    • Mechanical seal

    The selection depends on slurry characteristics and operating conditions.

    Multiple Drive Configurations

    The pump supports various transmission methods:

    • V-belt drive
    • Elastic coupling drive
    • Gearbox drive
    • Hydraulic coupling drive
    • Variable frequency drive

    Different drive solutions allow flexible integration into dredging, mining and industrial systems.

    Bearing and Shaft Design

    Robust Shaft Structure

    The large diameter shaft design helps reduce shaft deflection and improves operational stability.

    Cartridge-Type Bearing Assembly

    The bearing assembly is designed for convenient inspection and maintenance.

    Benefits include:

    • Easier replacement
    • Reduced downtime
    • Improved equipment availability

    Shaft Protection

    The shaft sleeve protects the shaft from slurry wear and improves service reliability.

    Applications

    Dredging and River Excavation

    The pump is suitable for:

    • Dredger suction systems
    • River dredging
    • Channel excavation
    • Sediment transportation

    Sand and Gravel Extraction

    Applications include:

    • Sand mining
    • Aggregate transportation
    • Gravel handling

    The wide flow passage allows continuous transportation of coarse materials.

    Mining Industry

    Used for:

    • Ore slurry transportation
    • Coarse mineral slurry handling
    • Abrasive material transfer

    The wear-resistant structure supports long-term operation in demanding mining environments.

    Metallurgical Industry

    Suitable for:

    • Blast furnace slag transportation
    • Metal processing waste slurry
    • Abrasive industrial materials

    Material Options

    Typical material selection includes:

    ComponentMaterial
    ImpellerHigh Chrome Alloy
    Pump CasingHigh Chrome Alloy
    Back LinerHigh Chrome Alloy
    ExpellerHigh Chrome Alloy
    ShaftHigh Tensile Steel
    Shaft Sleeve3Cr13

    Material selection depends on slurry concentration, particle characteristics and operating conditions.

    Technical Parameters

    ModelOutlet Diameter (mm)Speed (rpm)PERFORMANCE PARAMETERRating - kWImpeller Diameter (mm)Max. particle size (mm)
    Flow (m3/hr)Head (m)Eff. η
    (%)
    M-4-SG-D100600-140036-2507-56506037882
    M-6-SG-E150800-1400180-54012-5260120378120
    M-8-SG-F200500-1000180-82012-5660260533178
    M-8-SG-S200500-1000180-82012-5660560533178
    M-10-SG-G250400-850360-120012-6065600667220
    M-12-SG-G300300-700700-27008-7065600864241
    M-12-SG-T300300-700700-27008-70651200864241
    M-6-GH-F150500-1000180-90020-9060260610140
    M-8-GH-S200500-110050-90020-7870560610180
    M-10-GH-G250350-700500-200020-7870600915210
    M-14-GH-TU350250-5001000-280020-707012001220230

    How to Select the Right Gravel Pump?

    Selection should consider:

    Particle Size

    Large solid particles require:

    • Wide flow passage
    • Suitable impeller design
    • Wear-resistant materials

    Slurry Characteristics

    Important factors include:

    • Solid concentration
    • Particle hardness
    • Abrasiveness
    • Material composition

    Operating Conditions

    Selection should consider:

    • Required flow rate
    • Pumping distance
    • Installation conditions
    • Drive configuration

    Frequently Asked Questions

    Q1：What is a gravel pump used for?

    👉A gravel pump is designed for transporting slurry containing large solid particles such as gravel, sand, rocks and mining debris that cannot be handled efficiently by standard slurry pumps.

    Q2：What is the difference between a gravel pump and a slurry pump?

    👉A gravel pump features a wider flow passage and stronger solid handling capability, allowing it to transport larger particles with lower blockage risk.

    Q3：Can SG Gravel Pump be used for dredging?

    👉Yes. SG Gravel Pump is widely used for dredging, river excavation, sand extraction and other applications involving coarse slurry transportation.

    Q4：What materials are used for SG Gravel Pump wear parts?

    👉The wet-end components are commonly manufactured from Ni-hard alloy and high chrome alloy materials for improved abrasion resistance.

    Q5：What sealing options are available?

    👉Available sealing options include packing seal, expeller seal and mechanical seal.

    Conclusion

    The Gravel Pump – SG provides a reliable solution for transporting large particle slurry, sand, gravel and highly abrasive materials.

    With a single casing structure, wide flow passage, wear-resistant alloy components and flexible configuration options, it delivers stable performance in dredging, mining, metallurgy and industrial solid handling applications.

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