Poultry Feeding System Product

Overview

A poultry feeding system is a distributed network delivering precisely metered portions of pelleted or mashed feed to hundreds of birds throughout a henhouse, broiler barn, or turkey facility. The system consists of a centralized Feed Storage Silo (2–20 tonne capacity), a Main Distribution Auger trunk line, 4–6 Branch Line Auger branch lines, and 20–100 individual Automatic Feeding Pan feeders hanging above the birds. A Controller & Logic System orchestrates feeding cycles throughout the day, dispensing feed on a schedule and adjusting portions based on consumption feedback from Sensor & Feedback System load cells beneath the pans.

Modern poultry farms operate on razor-thin margins; automating feed delivery reduces labor costs and, more importantly, standardizes bird nutrition. Uniform feeding across the flock results in more uniform body weight, earlier lay-date in hens, and better feed conversion ratios in broilers. The system eliminates hand-filling feeders daily and detects when pans run empty (risking bird stress and production loss).

Storage and silo

The Feed Storage Silo is a cylindrical bolted or welded tank with a Silo Hopper conical discharge section. Silos are constructed from 2–3 mm galvanized steel panels bolted together, resisting corrosion from ammonia-rich barn air. A typical 5-tonne silo is 2.5 m diameter × 3.5 m tall; a 10-tonne is 3 m × 4.5 m. The Silo Roof is a conical cap with a Fill Auger Coupling coupling allowing a farm truck with a PTO-driven auger to empty bags or tanker-feed directly into the silo. A Access Hatch permits internal cleaning; accumulation of fines (powdered feed) or moisture can bridge and block discharge.

The silo is mounted on a steel pad or concrete foundation. Below it sits the Main Distribution Auger, drawing feed from the conical Silo Hopper through a slide gate or auger inlet.

Main distribution auger

The Main Distribution Auger is a horizontal conveyor running the full length of the henhouse (15–20 m typical). It is a Auger Tube (100–150 mm diameter) containing a Auger Shaft (40 mm solid steel) with welded Auger Flighting Section (200 mm pitch, optimized for pea-sized feed particles). The auger rotates slowly, 60–100 rpm, driven by a 2–3 kW Main Motor.

The low speed is intentional. Fast-rotating augers damage feed particles, generating fines that reduce nutritional value and increase spoilage risk (fines absorb moisture). A 60 rpm auger can convey 5–10 tonnes per hour, more than sufficient for a 50,000-bird house consuming 50 tonnes per month (30–40 kg/day). The auger is suspended from the Structural Frame via Suspension Rods and Equipment Brackets.

Branch augers and pans

Four to six Branch Line Augers branch off from the main auger at 3–4 m intervals, running perpendicular across the house width. Each branch is 50–75 mm diameter, 8–12 m long, rotating at 200–400 rpm (higher speed and tighter pitch than the trunk line to distribute more evenly).

At the end of each branch, feed drops into individual Automatic Feeding Pans suspended in a grid above the birds. The pan is a stainless steel vessel (2–5 L capacity) with an anti-waste Anti-Waste Baffle ring and a Pan Outlet Valve valve (solenoid or gravity slide gate). When the Controller & Logic System signals a feeding cycle, the valve opens, allowing feed to flow from the auger into the pan. The valve closes when the pan reaches a setpoint weight (detected by a Pan Weight Sensor).

Most systems use distributed control: a master PLC commands the opening of branch-line solenoids, but each pan has its own load cell and local logic ensuring each pan fills to the same level. This prevents unequal distribution caused by auger wear or wear in individual pans' valves.

Sensor feedback and consumption monitoring

A subset of pans (typically 8–10 per pen group) have Pan Weight Sensors (load cells rated 10 kg, ±0.05 kg resolution) mounted beneath them. These load cells send continuous weight signals to the Signal Conditioner, which buffers the data and reports to the Programmable Logic Controller via analog or CAN-bus interface.

The PLC maintains a consumption profile: the weight of each monitored pan is recorded every minute. When the PLC detects that a pen's average pan weight has dropped below a threshold (e.g., from 2 kg to 0.5 kg), it triggers a refill. By comparing pan weights across time, the PLC can estimate total feed consumption and identify pens with abnormal eating behavior (indicating illness or environmental stress).

In addition, optical or capacitive Pan Availability Sensors detect when a pan is completely empty. If a pan stays empty for more than 5–10 minutes, the Human-Machine Interface alerts the farmer to investigate (blockage, bird mortality, or feeder mechanical failure).

Feeding schedule

The Controller & Logic System runs a daily schedule stored in Feed Schedule Database. A typical schedule for laying hens:

• 06:00 — 1.5 kg per pan (morning)
• 10:00 — 1.0 kg per pan
• 14:00 — 1.5 kg per pan
• 18:00 — 1.0 kg per pan
• 20:00 — Refill all pans to maximum (evening)

Broilers receive continuous access (feeders always available), or limited feeding for better body composition. Turkeys are often fed once daily, with automatic pan-out-of-service during molt. The Human-Machine Interface (touchscreen interface) allows the farmer to modify times and portion sizes without re-programming the PLC.

Motor and actuation

The Main Motor is a 2–3 kW 3-phase asynchronous motor (1400 rpm), stepped down via a chain drive to 60–100 rpm at the main auger shaft. A Motor Soft-Starter (soft-start module) limits inrush current when the motor starts, reducing electrical demand and mechanical shock.

A Mechanical Brake, spring-set mechanical brake, holds the main shaft when the motor is off, preventing auger backslip. Branch auger motors are smaller (0.5–1.5 kW) with Motor Soft-Starters allowing soft-start and variable speed (some farms slow branch augers during specific feeding windows to extend the refill cycle and improve distribution uniformity).

The Branch Distribution Pump (or separate pneumatic pump) supplies 4–6 bar air pressure to the solenoid valves controlling individual pan outlets. Compressed air is drawn from the farm's central compressor or from an onboard 1–2 kW pump.

Electrical and control architecture

The Controller & Logic System is a hardened industrial PLC with 32 digital I/O (motor contactors, solenoid valve drivers) and 8 analog inputs (load cell signals). It communicates with the Human-Machine Interface via a local serial link (RS-485 or USB). A redundant 24 V Power Supply provides logic power and solenoid drive voltage.

Emergency stop is hardwired: pressing the poultry-feeding-emergency-stop button (if present) de-energizes all contactors, stopping motors and closing solenoid valves instantly. Manual feeders or backup pans must exist to prevent bird starvation if power is lost.

Structural frame

The Structural Frame is a welded steel grid spanning the length and width of the house, typically 1.5–2 m above the bird floor. Main Main Beams (200 × 100 mm I-beams or 150 × 150 mm tube) run lengthwise; Cross Members (100 × 100 mm tube) space them 2–3 m apart. The augers, silo, and pans are suspended from this grid via Suspension Rods (M16 threaded rods with nylock nuts), isolating vibration and allowing adjustment for house settling.

Maintenance and reliability

The main auger flighting wears gradually; worn sections are replaced in the field. Bearing replacement is routine every 2–3 years (500–1000 operating hours). Solenoid valves are cartridge-type, easily replaced. Load cells occasionally develop salt-induced corrosion; sensor replacement is a 30-minute job per pan.

Blocked augers (from bridged fines or hardened feed) are the most common failure. Preventive maintenance includes: weekly visual inspection of branch lines, monthly manual feed-flow testing, and quarterly cleaning of the silo interior. Bird litter and dust accumulate in the silo over months; operators must pump out compacted material periodically.

In tropical or wet climates, mold or spoilage in the silo is a risk. Many farms add anti-caking agents (flow aids) or moisture-absorbent minerals (bentonite) to the silo during fill. Feed turnover (complete silo discharge every 3–4 weeks) is mandatory.