# Shandong Baowei Duck Carcass Production Line: Technology Empowers a New Benchmark in Poultry Slaughtering

In the modern poultry slaughtering industry, automated production lines have become the core equipment for enhancing efficiency and ensuring quality. Relying on more than thirty years of technological expertise, Shandong Baowei Machinery & Technology Co., Ltd. has developed an automated duck carcass slaughtering line that integrates intelligence, energy efficiency, and modularity, setting a benchmark for the industry’s transition from extensive processing to precision manufacturing. This fully automated production line, which covers the entire process—from live ducks to ready-to-cook white ducks—not only achieves a high throughput of 12,000 ducks per hour but also keeps product loss below 0.3% through precise process control. As a result, it has become the preferred equipment supplier for the Peking duck industrial chain in the Beijing-Tianjin-Hebei region and the braised food processing clusters in the Yangtze River Delta.

1. Full-process automation: Reconstructing the logic of slaughter production

The Baowei duck carcass production line adopts a modular design concept, seamlessly connecting 12 core processes:

1. **Intelligent Duck Hanging System**: Utilizing a variable-frequency speed-control chain, this system achieves a standard hanging rack spacing of 8 inches (203.2 mm). Paired with nylon-material walking wheels, it ensures stable duck suspension while preventing skin damage. The system supports capacity adjustments ranging from 3,000 to 12,000 birds per hour, meeting the diverse needs of facilities—from small- and medium-sized processing plants to large-scale slaughterhouses.  

2. **Water-bath Electrical Stunning Device**: This device employs low-voltage pulse technology at 40–50V, combined with a precisely controlled stunning duration of 4–6 seconds. It ensures that ducks are instantly rendered unconscious, thereby minimizing stress responses, while also preventing muscle contractions caused by excessive current that could affect meat quality. Measured data show that this process can reduce bleeding time to just 3 minutes, with a blood residue rate below 0.5%.

3. **Spiral Pre-cooling Core Equipment**: Equipped with a 3.7 kW high-efficiency motor, this equipment utilizes a spiral-propulsion design to ensure uniform cooling of the carcasses. Within a sealed space measuring 12,000 × 3,300 × 3,200 mm, a mixture of ice and water maintained at 0–4℃ reduces the core temperature of the duck carcasses below 7℃ in just 15 minutes—a 40% improvement over conventional pre-cooling methods. Additionally, a circulating filtration system reduces water consumption by 65%.

4. **Waxing and Depilation Combination Unit**: This innovative unit employs a three-stage waxing process. In the first stage, wax is melted at a high temperature of 120°C to soften fine hairs; in the second stage, wax at a moderate temperature of 85°C penetrates deeply into the pores; and in the third stage, wax solidifies at a low temperature of 60°C to achieve precise shaping. Combined with the automatic depilator’s vibration frequency of 120 times per minute, this system can achieve a residual hair removal rate of 99.2%, representing a 20-fold improvement over manual hair removal efficiency.

## II. Technological Breakthrough: Solving Industry Pain Points

In response to the unique technical challenges specific to waterfowl slaughter, Bowei’s R&D team has achieved three key breakthroughs:

- **Waterproof Feather Treatment Technology**: Before the scalding stage, a high-pressure spray device is added to open up the gaps in the feathers using water pressure of 0.8 MPa, thereby increasing the penetration efficiency of the 82°C hot water by a factor of three and completely resolving the issue of uneven plucking caused by the waterproof layer on the feathers of waterfowl such as ducks and geese.

- **Body Protection System**: Food-grade silicone pads are installed on the inner walls of the hair removal machine, paired with a 360° rotating rubber roller. This design maintains a high hair removal rate of 120 rotations per minute while keeping the skin-breakage rate below 0.1%. The design has been granted a national utility model patent (Patent No.: ZL20242XXXXXXX.X).

- **Smart Temperature-Controlled Pre-cooling Chamber**: Equipped with a PID temperature control system, this chamber uses 12 temperature sensors strategically placed around its perimeter to dynamically adjust the ice-water ratio in real time. This ensures that the cooling curves for different batches of duck bodies fluctuate by no more than ±0.5℃, effectively inhibiting microbial growth.

## III. Customized Services: Matching Diverse Needs

宝威流水线提供从5000只/小时到12000只/小时的梯度化产能配置，支持设备尺寸、材质、功能模块的深度定制：  

- **Economical Solution**: For small-scale workshops processing fewer than 3,000 birds per day, we offer a combination package consisting of a vertical scalding machine and a horizontal depilating machine. The equipment occupies only 15㎡ of space, and the total investment cost is kept within RMB 180,000.

- **Flagship Solution**: A full-process production line designed for large-scale slaughtering enterprises, integrating value-added modules such as automatic weighing and grading, metal detection, and vacuum packaging. Paired with Bowei’s self-developed MES production management system, this solution enables end-to-end digital traceability—from raw material receiving to finished product shipment.

- **Special Environment Adaptation**: Developed pressurized scalding equipment tailored to the atmospheric pressure differences in plateau regions; equipped export enterprises with stainless steel materials meeting EU standards and certified by SGS for food contact safety.

## IV. Industry Empowerment: From Equipment Supplier to Solution Provider

Bao Wei’s service system spans the entire lifecycle of a project:

- **Preliminary Planning**: A team of engineers is dispatched to conduct on-site surveys and, based on the factory’s structural layout, production capacity targets, and budget constraints, prepare a 3D layout plan. A case study involving a client in Hebei Province shows that the optimized production line reduced material handling distances by 42%.

- **Installation and Commissioning**: We offer “turnkey” services, providing full supervision from equipment lifting to electrical wiring, ensuring cold commissioning is completed within 72 hours and hot-load testing is completed within 48 hours.

- **After-sales Guarantee**: We have established a nationwide 24-hour response network and maintain a stockpile of commonly used spare parts worth 5 million yuan. We also offer a “3-year free replacement” policy for key components.

At the Zucheng production base in Shandong, three slaughtering equipment sets are shipped to various regions across the country every day, among which the duck carcass processing line accounts for a significant share.