Built for customers who sell feed by the ton, not by the bag. The 3-5 t/h ring die line takes locally available corn, soybean meal, wheat bran, rice bran, cottonseed meal, sunflower meal and similar raw materials and turns them into uniform 2-8 mm compound pellets with a low powdering rate.
Typical users: commercial feed mills supplying local dealers; livestock and poultry farms mixing their own ration; feed traders who bag and resell under their own brand. Pellet size is switched between 2 mm and 8 mm by changing the die, so one line covers chick starter, grower, layer, cattle, sheep and fish feed. High-fibre formulas run with a larger die hole and a lower compression ratio; high-fat formulas with a higher compression ratio and a longer conditioning time.
parameter
Model WW-3T WW-4T WW-5T
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Output (t/h) 3 4 5
Ring die diameter (mm) 420 450 508
Pellet mill main motor (kW) 55 75 90
Feeder + conditioner motor (kW) 3 4 5.5
Hammer mill (kW) 55 75 90
Mixer batch (kg) / motor (kW) 500 / 15 500 / 18.5 1000 / 22
Bucket elevator capacity (t/h) 10 15 20
Counter-flow cooler (m³) / fan (kW) 2.5 / 5.5 3.5 / 7.5 5 / 11
Crumbler (kW) 5.5 optional 5.5 optional 7.5 optional
Screener (kW) 1.5 1.5 2.2
Bagging machine (kW) 1.5 1.5 1.5
Pellet diameter (mm) 2-8 2-8 2-8
Steam boiler (t/h, optional) 0.3 0.5 0.5
Total installed power (kW) 135 165 195
Floor space L x W x H (m) 18 x 6 x 8 22 x 7 x 9 26 x 8 x 10
Shipping volume 2 x 40HQ 2 x 40HQ 3 x 40HQ
Standard configuration. Final motor power, ring die diameter and layout are confirmed against your raw material, required fineness, pellet size and local voltage before the contract.
principle
1. Intake and grinding. Grain and meals are fed by screw conveyor into the hammer mill, ground to pass a 2-3 mm screen, then lifted by the bucket elevator. The cyclone and pulse dust collector keep the workshop clean.
2. Batching and mixing. Ground material is weighed into the paddle mixer; oil, molasses, premix and water are added and mixed for 90-120 seconds to a coefficient of variation below 5%.
3. Steam conditioning. The mash passes through the conditioner, where dry saturated steam at 0.2-0.4 MPa raises it to 75-85 °C and 15-16% moisture. Starch gelatinises and fibre softens, which is what makes a durable pellet.
4. Ring die pressing. Conditioned mash falls into the centre of the rotating vertical ring die; two or three rollers press it outward through the die holes and fixed knives cut the strands to length. Because die and rollers work over a much larger area than a flat die, output is continuous, pellet density and durability are higher, and kWh per ton is lower.
5. Cooling, screening and bagging. Hot pellets enter the counter-flow cooler, where air moves against the pellet flow and brings them to within 5 °C of ambient. The crumbler reduces them to smaller sizes if needed, the screener removes fines and returns them to the mixer, and the bagging machine weighs and sews 10-50 kg bags.
Detail
The WEIWEI 3-5 t/h ring die feed pellet production line is a complete turnkey plant, not a pile of separate machines. From the intake conveyor to the sewing machine every unit is sized to match: a 3 t/h line is not a 5 t/h line with a smaller motor — elevator capacity, cooler volume, mixer batch and bin volume are all re-matched so that nothing becomes a bottleneck.
The heart of the line is the ring die pellet mill. Compared with connecting four or five flat die machines to reach 3-5 t/h, one ring die mill means continuous output with no batch gaps, one operator instead of three, about a third of the floor space, one set of wear parts to stock, denser pellets with a lower powdering rate — which is what buyers judge when they open a bag — and lower energy consumption per ton of finished feed.
Control is centralised in one cabinet: start-up and shut-down follow a fixed sequence so material never jams a chute, every motor has thermal overload protection, and units are interlocked. The line is designed for 20 hours a day with routine greasing only; the die and rollers are the only consumables.
We adapt the layout to your building, your raw materials and your market: 380 V / 415 V / 440 V, 50 or 60 Hz, 2-8 mm die, optional crumbler, optional double-shaft mixer, optional automatic bagging with weighing and sewing in one station.
Product Details and Packaging
Details that decide uptime:
- Ring die and rollers. Alloy steel die, compression ratio matched to your formula, hardened working surface, 600-1000 hours service life depending on abrasive content; rollers can be re-grooved instead of replaced.
- Main drive. Heavy-duty gear reducer with forced oil lubrication — no belt slip, no V-belt re-tensioning, no downtime for belt changes.
- Conditioner. Stainless steel body and shaft, steam manifold with pressure gauge and safety valve, direct steam injection for fast, even temperature rise.
- Magnet feeder. Permanent magnet in the feeder removes tramp iron before it reaches the die, protecting the most expensive wear part in the line.
- Control cabinet. One intelligent cabinet with PLC, thermal overload for every motor, interlocking between units and an emergency stop on each floor.
- Spare parts shipped with the line. One spare die, one set of rollers, screens, knives, bearings and seals.
Packing and shipping:
Every unit is wrapped in stretch film; motors and the control cabinet travel in plywood cases; dies and rollers are oiled and boxed separately. You receive the container loading plan, lifting points and a bolted foundation drawing before shipment. A 3-5 t/h line normally ships in 2-3 x 40HQ containers, and the bolted frame means no welding on site — assembly follows the drawing and the line is commissioned to rated output.
Factory and more information
Zhengzhou Weiwei Machinery Co., Ltd. has been building feed and biomass machinery in Xingyang, Henan since 1980. We cut, weld, machine and assemble in our own workshops — hammer mills, mixers, bucket elevators, ring die mills, coolers and bagging machines are all made under one roof, so quality, spare parts and delivery dates stay under our control instead of a supplier's.
The company holds ISO 9001, CE, SGS and TUV certificates and more than 19 patents. Complete lines and single machines have been exported to Africa, Southeast Asia, the Middle East and South America, running on different voltages, in different climates and on very different raw materials.
For a 3-5 t/h project we deliver more than hardware: a layout drawing for your building, foundation and anchor bolt plan, shipping list, installation supervision, commissioning to rated output and operator training, plus a 12-month warranty and lifetime spare parts support. If your formula or capacity changes later, the line can be extended with an extra bin, a crumbler or a second cooler without rebuilding the whole plant.
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