The 500L/600L Hydraulic Folding Arm Boom Sprayer is a high-efficiency agricultural plant protection machine designed for large-scale pesticide, foliar fertilizer, and herbicide application. It connects to tractors via a 3-point hitch system, is powered by the tractor's PTO (Power Take-Off) shaft, and features a hydraulic folding boom-ideal for field crops, orchards, and cash crops.
II. Core Technical Specifications
1. Basic Dimensions
Tank Capacity: 500L/600L (HDPE material, corrosion-resistant)
Required Tractor Power: 40-50 HP (PTO speed: 540rpm or 1000rpm)
Spray Width: 8-12 meters (folded width ≤3 meters for road transportation)
Nozzle Quantity: 14-24 units (spacing: 0.5-0.75 meters)
Working Pressure: 0.8-1.5 MPa (adjustable for different crops)
Pump Flow Rate: 30-60 L/min (varies by pump type)
Total Weight: Approx. 250-350 kg (including chemical solution)
2. Hydraulic Folding System
Folding Type: Multi-section hydraulic folding (3-5 sections typically)
Control Method: Operated via the tractor's hydraulic system (through a multi-way valve)
Folding Time: 15-30 seconds (model-dependent)
Safety Design: Dual protection (automatic limit + mechanical locking)
3. Power Transmission System
PTO Shaft Specification: Standard 540rpm (21 splines) or 1000rpm (for high-power requirements)
Transmission Mode: PTO shaft → Universal joint → Gearbox → Liquid pump
Gearbox: Built-in speed increasing/decreasing device to match the pump's optimal working speed (usually 500-600rpm)
III. Key Component Details
1. Pump Type Comparison
| Pump Type | Working Pressure (MPa) | Application Scenarios | Features |
|---|---|---|---|
| Diaphragm Pump | 3-5 | High-pressure spraying, high-viscosity liquids | Strong self-priming ability, anti-clogging, long service life |
| Roller Pump | 2-3 | Standard field spraying | Simple structure, easy maintenance, cost-effective |
| Gear Pump | 2-2.5 | Low-viscosity liquids, economic applications | Stable pressure, low cost, suitable for regular operations |
Note: For 500L/600L models, a 5-8 roller pump or 3-cylinder diaphragm pump is recommended to ensure spraying uniformity and system stability.
2. Boom & Nozzle System
Boom Structure: High-strength aluminum alloy truss (lightweight, wind-resistant)
Folding Mechanism: "X-type" or parallelogram design for synchronous folding of all sections
Nozzle Types:
Fan Nozzles: Ideal for fields (uniform coverage, flat fan-shaped droplets)
Cone Nozzles: Suitable for orchards (conical droplets, strong penetration)
Anti-drip Design: Auto-shutoff when spraying stops to prevent chemical leakage and contamination
3. Control System
Pressure Regulation: Dashboard + control valve for precise pressure adjustment
Sectional Control: Individual boom section shutoff to adapt to different field widths and crop layouts
Agitation System: Hydraulic-driven agitator to maintain uniform chemical mixing
Filtration System: 3-stage filtration (tank inlet + pre-pump + pre-nozzle) to prevent system clogging
IV. Working Principle
Power Transmission: Tractor PTO shaft (540rpm) rotates → Universal joint → Gearbox → Liquid pump operates.
Chemical Pressurization:
The liquid pump pressurizes the chemical solution to 0.8-1.5 MPa.
High-pressure solution is delivered to the boom via pipelines.
The agitation system works synchronously to ensure uniform mixing.
Spraying Operation:
Chemicals are atomized into 50-300μm droplets through nozzles (adjustable based on crop needs).
The boom can be hydraulically lifted to 1.5-3 meters to adapt to different crop heights.
The folding system retracts the boom to ≤3 meters for road transportation.
V. Application Scenarios
1. Field Crops (Wheat, Corn, Rice, etc.)
Advantages: Large-area uniform spraying, efficiency of 10-30 acres per hour
Recommended Configuration: 500L tank, 10-12m spray width, fan nozzles, 0.8-1.0 MPa pressure
2. Orchards/Economic Forests (Apples, Pears, Citrus, etc.)
Advantages: Hydraulic folding arm adjusts flexibly to different row spacings and tree heights
Recommended Configuration: 600L tank, 8-10m spray width, cone nozzles, 1.0-1.5 MPa pressure
3. Special Terrains & Crops
Slope Operation: Low center of gravity for stability; hydraulic system keeps the boom level
Tall Crops: Boom lifts to 1.5-2 meters to cover crop tops and sides
Protected Agriculture: Compact folded width for greenhouse operations
VI. Buying Guide (International Market)
1. Tractor Compatibility
Power Matching: ≥40 HP for 500L models; ≥50 HP for 600L models
PTO Interface: Confirm tractor PTO speed (540rpm/1000rpm) to match the sprayer
Hydraulic Output: Minimum 1 hydraulic outlet (for boom folding); 2 outlets recommended (including boom lifting)
2. Essential CE Certification Standards
EN 907: Safety requirements for agricultural and forestry sprayers (protective devices, stability)
EN 12965: Safety requirements for PTO shafts (3-layer shielding)
EN ISO 16119-2: Spray uniformity and drift control requirements
CE Marking: Clear CE logo + notified body number on the product
3. Practical Configuration Recommendations
Priority Options: "Three-hydraulic" configuration (hydraulic folding + hydraulic lifting + hydraulic agitation) for easier operation
Nozzle Selection: Standard fan nozzles + optional cone nozzles (for orchards) for multi-purpose use
Accessories: Spare nozzles, filters, and seal kits to reduce maintenance time and costs
VII. Operation & Maintenance Tips
1. Safe Operation
Personal Protection: Wear protective clothing, gloves, and goggles; spray downwind to avoid chemical contact.
Startup Sequence:
Connect and lock the PTO shaft.
Attach hydraulic hoses.
Start the tractor and run at idle.
Engage the PTO slowly and monitor pressure rise.
Field Transfer:
Fold and lock the boom.
Lower the boom to the minimum height.
Limit speed to ≤20km/h to avoid damage from bumpy.
2. Routine Maintenance
After Daily Use:
Empty the tank and flush the system with clean water for 10 minutes.
Disassemble and clean nozzles and filters.
Check for loose connections and tighten as needed.
Regular Maintenance:
Every 50 hours: Check gearbox oil level; top up or replace if necessary.
Every 200 hours: Inspect hydraulic system seals and replace hydraulic oil.
Off-season Storage: Clean the machine, store with the boom folded, and place in a dry, covered area.
VIII. Economic Benefit Analysis
Efficiency Improvement: Single-person operation covers 10-30 acres per hour-10x faster than manual spraying.
Chemical Savings: Uniform atomization + precise control reduces chemical usage by 20-30% compared to traditional methods.
Return on Investment (ROI):
500L Model: Approx. $2,000-$3,000; ROI achieved in 1-2 planting seasons.
600L Model: Approx. $2,500-$3,500; Ideal for large-scale farms with faster ROI.
Conclusion
The 500L/600L Hydraulic Folding Arm Boom Sprayer is an ideal plant protection solution for medium-sized farms, balancing flexibility and efficiency. When purchasing, prioritize tractor compatibility, pump type, and CE certification.
The "three-hydraulic" configuration (folding + lifting + agitation) significantly enhances operational convenience and productivity. Whether for field crops or orchards, this equipment delivers reliable performance, enabling "precision spraying, cost reduction, and efficiency improvement" in modern agriculture.
