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This high-power self-propelled sprayer boasts a robust powertrain with a high-output engine and dual battery setup for reliable performance. The walking system includes a heavy-duty frame, drum brake system, and large-diameter tires that ensure smooth and safe movement across fields and during transfers. The gearbox offers multiple forward and reverse gears with high and low-speed transmission, adapting to different working scenarios. The spray system features a large number of stainless steel nozzles, with optional fan-shaped or conical spray plates, ensuring balanced pressure and uniform atomization. The hydraulic motor-driven medicine pump delivers consistent flow, while the jet and reflux stirring system keeps the medicated liquid well-mixed.
| Project name | Specification parameters | Item name | Specification parameters | ||
| Overall size | Overall dimensions (mm) | 6260*2500*3170 | Powertrain | Engine power (kw/r/min) | 76/2200 |
| Ground clearance (mm) | 920 | Battery capacity | 2*24v 2*45Ah | ||
| Spray length (mm) | 20000 | Engine type: | 100HP- Yunnei cylinder water cooled engine | ||
| Spray rod lift (mm) | 450-1600 | Walking system | Weight of the whole machine (Kg) | 3000 | |
| Wheel base (mm) | 1850/adjustable | Drive | Four-wheel drive | ||
| Wheelbase (mm) | 2500 | Steering | Four-wheel steering | ||
| Cab | Adjustable | Gearbox | Forward gear 3, backward gear 2 with high and low speed transmission | ||
| Spray system | Spray rod position | Front | Brakes | Drum Brake | |
| Spray rod material | Aluminium | Tires | Pneumatic rubber | ||
| Number of spray bodies | 51 | Tire diameter (mm) | 1600 | ||
| Spray rod type | Hydraulic lift | Tire width (mm) | 140 | ||
| Medicine cabinet Volume (L) | 1400 | Turning radius (mm) | 4300 | ||
| Working pressure (Mpa) | 0-2.5 | Drive mode | Four-wheel drive | ||
| Drug pump flow (L/min) | 160 | Walking speed (km/h) | <28km/h | ||
| Medicated liquid stirring | Jet Flow+Back Flow | Work benefit | Application efficiency | 6-10hec/day | |
| Medicine pump construction | Diaphragm pump | Topdressing efficiency | 6-10hec/day | ||
| Medicine pump drive | Hydraulic motor | Fuel consumption (L/h) | 20 | ||
The 3WPZ-1400F self-propelled sprayer is a high-power, high-torque agricultural solution designed for demanding field operations. As a top-tier large-capacity agricultural sprayer, it combines robust performance with versatility, making it ideal for complex environments such as muddy, uneven, or small plots. Equipped with a powerful engine and advanced diaphragm pump, this self-propelled boom sprayer outperforms standard models in terms of efficiency and coverage. Whether you’re managing food crops, vegetables, or economic crops, the 3WPZ-1400F stands out as a multi-purpose crop sprayer that delivers exceptional results, streamlining large-scale operations and adapting to diverse agricultural needs.
At the core of this self-propelled sprayer is a 100-horsepower National IV engine, paired with a Mingke 5-axis gear bridge and 6-axis transmission for enhanced torque. The four-cylinder in-line water-cooled design ensures durability and power, making it suitable for muddy paddy fields and challenging terrains. The rear-mounted engine layout balances the machine’s weight with the fuel injector and cab, centering the center of gravity for improved driving safety.
Equipped with a high-pressure diaphragm pump, the 3WPZ-1400F delivers consistent pressure and flow, ensuring uniform atomization and precise liquid distribution. The 20-meter spray rod features hydraulic lifting and folding functions, along with an automatic balancing device, providing stable support and wide coverage. The spray rod’s single-side double-support and double-cylinder top-mounted mechanism enhance structural strength, making it suitable for small plot operations.
The split self-developed medicine tank offers an impressive capacity, with an independently designed sunken structure located on both sides of the machine. This low-center-of-gravity design enhances stability during operation, even on uneven terrain. The tank’s large capacity reduces the need for frequent refills, improving efficiency during long working sessions, and far exceeds the carrying capacity of remote-controlled agricultural drones.
The 3WPZ-1400F features four-wheel drive and four-wheel steering, ensuring exceptional maneuverability in complex environments. The pneumatic rubber tires are designed for durability and smooth movement, while the adjustable wheelbase and large track width enhance stability. The adjustable cab provides a comfortable working environment, with a user-friendly interface and smooth gear shifting, reducing operator fatigue during extended use.

The 3WPZ-1400F excels in full-process pesticide application for medium and short crops such as rice, wheat, soybeans, and peanuts, as well as early and mid-stage application for taller crops like corn and sorghum. Its high efficiency and wide coverage make it ideal for large-scale farms, reducing the time and labor required for disease, pest, and weed control.
Designed for muddy, uneven, and small plot environments, this diaphragm pump sprayer navigates with ease, adapting to challenging terrains where other sprayers may struggle. It is suitable for vegetables, fruits, Chinese herbal medicines, forage grasses, and garden flowers, providing versatile pest and weed control solutions.
The 3WPZ-1400F can be equipped with a centrifugal single-disc fertilizer sprayer at the rear, enabling granular fertilizer dissemination. This dual-purpose functionality allows for front spraying and rear fertilizing, with matching widths to minimize seedling burden, making it more convenient and multi-functional than traditional tractor sprayers.

Inspect the diaphragm pump’s valve, diaphragm, and air chamber for wear or damage. Replace any faulty components to restore consistent pressure. Regular maintenance of the pump is essential to ensure the high-power self-propelled sprayer’s performance.
Clean the nozzle filter screen and the liquid medicine filter screen to remove any clogs or debris. Blockages can hinder spray performance, so regular cleaning will ensure uniform atomization and effective application.
Check the hydraulic oil level and add more if necessary. Inspect the connecting rod pin bearings of the extension cylinder or ejector cylinder for damage and replace them if worn. Proper maintenance of the hydraulic system and moving parts is key to ensuring smooth spray rod operation.
