Grain Spiral Scraper Conveyor

The Grain Spiral Scraper Conveyor by ZOOMRY is a specialized piece of equipment designed for global grain handling scenarios, focusing on the collection and transportation needs of bulk grains such as wheat, corn, and rice. With a wide capacity range of 100-2000 tph, it caters to various grain storage operations. Featuring an anti-breakage spiral design, a grain storage-adapted chassis, and a residue-preventing cleaning structure, it achieves "low loss, high cleanliness, and continuous" grain processing. Equipped with a 500-800 mm spiral system and an 800-1600 mm wide conveyor belt, supporting 100-meter wireless remote control, it is suitable for flat storage in grain warehouses and agricultural storage transfer scenarios. Certified by CE, EAC international standards, and grain industry hygiene standards, it stands out as the preferred choice for grain spiral scraper conveyors and grain storage equipment, offering "grain quality protection, strong adaptability, and easy maintenance," providing reliable grain handling solutions for global grain storage enterprises.

Core Functions of the Grain Spiral Scraper Conveyor

As a specialized piece of equipment focused on grain operations, the core competitiveness of ZOOMRY’s Grain Spiral Scraper Conveyor lies in "grain quality protection + adaptability to grain storage scenarios + operational stability." Addressing the pain points of traditional scraper equipment, such as "high breakage rates, residue-induced mold, and poor ground adaptability in grain storage," it resolves issues like "significant grain loss, compromised storage quality, and low operational efficiency" through structural optimization and functional synergy, while meeting the dual demands of global grain storage clients for "international compliance and hygiene safety."

Anti-Breakage Spiral System

The core spiral scraper unit is designed specifically for grain characteristics, distinguishing it from traditional hard material scraper conveyors by prioritizing "low breakage and uniform collection" performance. The spiral blades are made of 6-8 mm thick wear-resistant manganese steel with rounded, polished edges to avoid scratching grains with sharp edges. The alloy teeth on the outer side are designed with a 15° tilt angle, rather than vertical grabbing, to reduce impact and pressure on grain particles. Combined with a spiral linear speed of 2.5-3.0 m/s (precisely adjustable via the control system), the grain breakage rate is controlled below 0.5%, significantly lower than the industry average of 1.5%.

The spiral outer diameter ranges from 500-800 mm, adapting to different grain pile densities: for lighter grains like wheat and rice, the 800 mm large spiral achieves a high capacity of 2000 tph, using a "layered collection" logic to avoid grain pile compression; for larger-grained grains like corn, the 500 mm spiral with wide-spaced teeth reduces grain jamming, ensuring continuous collection without blockages. Additionally, the spiral shaft is equipped with self-aligning bearings at both ends, with a vibration amplitude ≤2 mm during operation, further reducing grain breakage due to equipment vibration.

Grain Storage-Adapted Track Chassis

Addressing the characteristics of grain storage and warehouse sites, where "floors are typically concrete or padded, requiring protection from crushing damage, and temporary storage areas have soft ground prone to sinking," the equipment is equipped with 400 mm wide tracks, offering two configurations tailored for grain storage:

• Rubber Tracks: Model 4009068, with an effective length of 2.9 m, made of high-elasticity food-grade rubber (compliant with EU EC 1935/2004 food contact standards), with a ground pressure of only 0.07 MPa, evenly distributing the equipment’s weight to avoid damaging grain storage floor padding (e.g., moisture-proof plastic films or wooden pallets). With a minimum turning radius of 5 m, it can flexibly maneuver in narrow gaps between grain piles, completing flat storage operations without frequent route adjustments.
• Steel Tracks (Optional): Model 40013554, with an effective length of 3.6 m, with track plates passivated to eliminate sharp edges, preventing scratches on grain storage concrete floors while offering high wear resistance, suitable for long-term operations on hard grain storage surfaces. Track tension is adjusted in real-time via the hydraulic system to adapt to varying ground hardness within grain storage areas, reducing ground friction damage due to track deviation.

Both track types are driven by hydraulic motors with an output torque of up to 3500 N·m, enabling smooth starts and stops even under full load. Combined with hydraulic dampers in the chassis, the equipment’s stability on slightly uneven grain storage floors is improved by 40%, preventing grain spillage during transportation.

Residue-Preventing Cleaning Design

Grains are prone to mold and contamination due to equipment residue, affecting storage quality. The equipment incorporates a residue-preventing design from the hopper to the conveyor belt: the hopper’s inner wall is lined with a 1.5 mm thick polytetrafluoroethylene (PTFE) anti-stick coating with a surface friction coefficient of only 0.04, achieving a grain residue rate ≤0.2%. The lining material complies with food contact safety standards, allowing direct contact with grains like wheat and corn. The hopper bottom features a “V-shaped” flow guide structure with a 15° inclined discharge port, ensuring no dead zones in grain transport and preventing mold due to material accumulation.

The conveyor belt uses a nylon-core anti-slip rubber belt with a polished surface (instead of traditional diamond patterns) to reduce grain particle embedding in gaps. The 350 mm high rubber skirts on both sides incorporate soft sealing strips, preventing grain leakage while facilitating cleaning. The conveyor belt head is equipped with two sets of polyurethane cleaning scrapers (powered by 3-phase electricity), achieving a 99% cleaning rate, thoroughly removing residual grain debris from the belt surface to prevent cross-contamination (e.g., no mixing when switching between corn and wheat). Additionally, critical areas (such as the connection between the spiral shaft and hopper) are fitted with food-grade sealing strips to prevent dust and impurities from mixing with grains, meeting global grain storage hygiene requirements.

Core Components

The long-term reliable operation of ZOOMRY’s Grain Spiral Scraper Conveyor relies on targeted optimization of core components for “grain protection, grain storage adaptability, and hygiene safety.” From the spiral to the control system, each component undergoes simulated grain industry condition testing and international hygiene standard verification, ensuring continuous and safe operation in global grain storage scenarios.

Anti-Breakage Spiral Drive Unit

The spiral system’s drive core is a 22-75 kW customized motor, precisely matched to grain capacity needs (22-37 kW for 100-500 tph, 45-55 kW for 500-1200 tph, 75 kW for 1200-2000 tph). The motor features an IP55 protection rating with a corrosion-resistant casing, capable of withstanding humid grain storage environments (relative humidity often reaches 60%-80%). The motor rotor uses a high-silicon steel lamination process, with operating noise ≤70 dB, avoiding disruption to the surrounding grain storage environment.

The accompanying gearbox offers three models: ZQ350 dual output, ZQ400 dual output, and ZLY250 hard-tooth dual output, with the hard-tooth gearbox achieving a transmission efficiency of 97% and supporting stepless speed adjustment (spiral speed 0-30 r/min). This allows adjustments based on grain type: low speed (15 r/min) for fragile rice, high speed (25 r/min) for hard corn, balancing "efficiency and low breakage." The gearbox output shaft and spiral shaft are connected via a flexible coupling to buffer impact loads during startup, preventing instantaneous grain compression and breakage.

Grain Storage-Specific Conveyor Belt System

The conveyor belt system is the critical link between “collection and transfer,” with a belt width of 800-1600 mm (800-1000 mm for 100-800 tph, 1200-1600 mm for 800-2000 tph), made of nylon-core anti-slip rubber with a polished surface (roughness Ra ≤0.8 μm), ensuring both anti-slip performance (friction coefficient ≥0.35) and minimal grain residue. The conveyor belt drive uses a 15-30 kW electric drum with built-in overheat protection (automatic shutdown above 120℃), preventing belt overheating during prolonged operations that could affect grain quality.

The conveyor belt length of 12-15 m, combined with a fixed 4-meter discharge height, allows direct connection to grain storage elevators or silo inlets, eliminating secondary transfers and reducing grain breakage and contamination during handling. The belt’s side skirts are made of food-grade rubber, suitable for direct grain contact, with excellent anti-aging properties and a service life exceeding 2000 hours, reducing the cost of frequent skirt replacements in grain storage.

Precision Control and Hydraulic System

The control system focuses on “precision grain operation control,” featuring a 12-inch high-definition HMI touchscreen supporting multilingual switching (English, Russian, Spanish, Chinese). The interface is designed for “grain parameter settings,” capable of storing five sets of common grain operation parameters (e.g., wheat spiral speed of 20 r/min, conveyor belt speed of 1.8 m/s; corn spiral speed of 25 r/min, conveyor belt speed of 2.2 m/s), allowing one-touch switching between grains without repeated adjustments.

The wireless remote control handle has an effective range of 100 meters, supporting full-function operations including “spiral start/stop, speed adjustment, track movement, and conveyor belt start/stop.” Operators can monitor grain collection from a safe area in the grain storage, avoiding close contact with dust (e.g., wheat dust) to protect health. In emergencies, both the remote handle and control cabinet feature emergency stop buttons that immediately cut off all power, ensuring grain operation safety.

The hydraulic system powers the track drive, with an 11-18.5 kW hydraulic pump station (11 kW for rubber tracks, 15-18.5 kW for steel tracks) and a 200 L oil tank equipped with triple filtration (10 μm precision). The system uses food-grade anti-wear hydraulic oil (FDA-compliant) to prevent grain contamination from leaks. Hydraulic pipelines use stainless steel fittings and high-pressure hoses, offering excellent corrosion resistance for long-term humid grain storage environments, with an annual system failure rate below 0.5%.

Modular Transportation and Efficient Installation

Addressing the characteristics of grain storage facilities with “limited space and uninterrupted operations,” ZOOMRY’s Grain Spiral Scraper Conveyor adopts a “compact modular disassembly + high pre-assembly ratio” design, ensuring grain handling performance while significantly reducing transportation and installation challenges within grain storage facilities, minimizing disruptions to storage operations.

Grain Storage-Adapted Modular Disassembly

The equipment can be disassembled into four standard units: spiral scraper module, conveyor belt module, track chassis module, and control module, each sized to fit a 40-foot high-cube container (12.03 m long × 2.35 m wide × 2.69 m high), with each unit weighing ≤20 tons, movable within the grain storage facility using standard cargo elevators or forklifts. The spiral and conveyor belt modules use a “horizontal disassembly” design to avoid vertical hoisting pressure on grain storage ceilings, while the control module is integrated into a waterproof enclosure (1.2 m × 0.8 m × 1.5 m), placeable in a corner of the grain storage without occupying operational space.

Compared to traditional scraper equipment requiring “whole-unit transport + large-scale hoisting,” cross-border logistics costs are reduced by 40%. Core components (e.g., anti-stick hopper and polished conveyor belt) are packaged at the factory with dust-proof and scratch-resistant materials to prevent surface damage during transport that could affect grain residue control.

High Pre-Assembly for Rapid Deployment

The equipment is 90% pre-assembled at the factory, including precise connection of the spiral to the motor, conveyor belt installation and debugging, initial hydraulic pipeline connections, and control system parameter calibration, undergoing 80 hours of full-load testing with “simulated grain storage conditions” (using a wheat-corn mix to verify breakage and residue rates), ensuring fault-free on-site installation.

On-site installation requires only three core steps: first, modular unit assembly (high-strength bolts to connect the spiral module to the chassis and conveyor belt module to the frame, completed by two people in 2 hours); second, final connection of hydraulic pipelines and electrical plugs (using food-grade sealed fittings, taking ≤1 hour); third, no-load testing and parameter fine-tuning (checking spiral collection, conveyor belt cleaning, and remote control functions, completed by a skilled team in one day for full deployment). ZOOMRY provides a multilingual technical manual with grain storage-specific notes, including “grain residue prevention cleaning steps” and a “parameter setting table for different grains,” along with 24-hour online technical support via video guidance to resolve installation queries, enabling deployment without a professional installation team and avoiding disruptions to normal grain storage operations.

International Compliance and Rigorous Quality

As equipment designed for the global grain industry, ZOOMRY’s Grain Spiral Scraper Conveyor ensures compliant use in various countries and regions through multiple international certifications and grain industry-specific testing, guaranteeing grain quality and operational safety.

International Certifications and Grain Hygiene Standards

The equipment has passed EU CE certification (Machinery Directive 2006/42/EC, Electromagnetic Compatibility Directive 2014/30/EU), completing 12 specialized tests for grain handling equipment safety requirements, including structural load-bearing strength, emergency braking response (≤0.5 seconds), electrical safety protection (IP65), and electromagnetic compatibility (resistant to strong electromagnetic interference in grain storage). It also holds EAC certification from the Russian Customs Union, meeting operational requirements for “-30℃ low-temperature grain storage” in CIS countries, with technical documentation provided in Russian (including protocols for preventing grain clumping at low temperatures).

Additionally, core grain-contact components (e.g., hopper lining, conveyor belt, sealing strips) comply with EU EC 1935/2004 and U.S. FDA 21 CFR Part 177 food contact material standards, ensuring no migration of harmful substances during direct grain contact. The equipment fully complies with ISO 22000 food safety management system requirements, with a fully traceable production process from raw material entry (e.g., stainless steel composition testing) to final product delivery, with quality records for each stage to ensure consistency and safety in mass production.

Grain-Specific Quality Control

ZOOMRY maintains a dedicated grain equipment testing laboratory equipped with grain breakage rate testers, residue detectors, and food contact material analyzers, conducting rigorous tests on the conveyor’s core performance:

• Anti-Breakage Testing: Continuous 100-hour collection tests with wheat, rice, and corn, controlling breakage rates at 0.3%, 0.5%, and 0.2%, respectively.
• Residue Prevention Testing: After collecting wet corn (18% moisture content), hopper and conveyor belt residue is ≤0.2 g/m², well below grain storage hygiene standards (≤1 g/m²).
• Hygiene Testing: Microbial testing of grain-contact components shows a total bacterial count ≤10 CFU/cm², with no E. coli or mold detected.
• Low-Temperature Testing: Equipment startup at -30℃, with spiral and track systems operating normally without cold-induced jamming or failures.

Each grain spiral scraper conveyor undergoes 16 rigorous tests before delivery, including “multi-grain collection switching tests,” “grain storage ground adaptability tests,” and “low-temperature startup tests,” and is delivered only after meeting standards, ensuring reliable operation and grain safety in diverse global grain storage scenarios.

Technical Parameters

Why Choose ZOOMRY

Customer Value

Choosing ZOOMRY’s Grain Spiral Scraper Conveyor provides significant value to global grain storage and agricultural warehouse clients in three dimensions: grain quality, operational efficiency, and compliance safety:

• Grain Quality Protection: The anti-breakage spiral design achieves a grain breakage rate ≤0.5%, a 67% reduction compared to traditional scraper equipment, minimizing grain loss and quality degradation (e.g., broken corn prone to mold, affecting market price). The residue-preventing cleaning design avoids grain mixing and mold, meeting global grain procurement standards and enhancing market competitiveness.
• Operational Efficiency Improvement: The integrated “collection-transport” design eliminates 1-2 transfer steps, improving flat storage efficiency by 40% compared to traditional “loader + conveyor” setups. The 100-meter wireless remote control reduces manual intervention, with a single unit replacing two operators, lowering labor costs. The wide capacity range accommodates various storage scales, eliminating the need for separate equipment for different capacities.
• Compliance and Safety Assurance: Core components comply with EU and U.S. food contact standards, certified by CE and EAC, enabling seamless entry into global markets without additional investment. Compliance with ISO 22000 food safety systems avoids grain recalls or penalties due to hygiene issues, reducing compliance risks.

Service Support

ZOOMRY has established a comprehensive service system of “technical support + spare parts + training” tailored to the needs of global grain storage clients, ensuring long-term stable operation and grain safety:

• Technical Support: Provides multilingual technical documentation (including grain operation manuals, grain storage maintenance guides, and food safety compliance manuals), covering spiral parameter settings for different grains (e.g., low speed for rice, high speed for corn), grain storage low-temperature operation techniques, and equipment cleaning and disinfection steps, accompanied by clear diagrams and operation videos. 24-hour online technical support (email: [email protected]; phone: +86-13164016717), with engineer response times within 4 hours. Assigned engineers have over 5 years of grain equipment service experience, familiar with operational pain points in diverse global grain storage scenarios (e.g., moisture prevention in tropical grain storage, low-temperature startup in cold regions).
• Spare Parts Assurance: Supported by an efficient global supply chain collaboration system, ZOOMRY pre-stocks common spare parts such as anti-stick linings, alloy teeth, and food-grade conveyor belts. Upon client request, parts are shipped quickly via international logistics (e.g., DHL, FedEx) within 5-10 days, depending on the region. For key clients, a “spare parts advance planning service” is offered—based on grain operation seasons (e.g., high-load post-harvest) and wear part replacement cycles, a procurement and storage plan is developed, using bulk or phased shipments to avoid downtime due to part shortages.
• Specialized Training: Offers “grain operation-specific training” for grain storage teams worldwide, covering anti-breakage parameter optimization for different grains, equipment cleaning and disinfection processes, and emergency handling for grain temperature anomalies, ensuring client teams master the core operation and grain safety protection aspects of the conveyor, tailored to professional grain storage operational needs.