A:
All Dongding dryers come with a 12-month warranty covering parts and workmanship from the date of commissioning. Lifetime technical support and spare parts supply are provided.
Introduction of Spent Grain Dewatering Machine
The Spent Grain Dewatering Machine is a high-efficiency industrial separation equipment specifically designed for the treatment of brewery waste, such as spent grains and hops. Utilizing advanced Screw Press technology, this machine is engineered to extract moisture from wet materials through mechanical compression.
In the brewing industry, spent grains typically have a high moisture content (around 80-85%). This machine effectively reduces the moisture level to approximately 60-65% or lower, making the material much easier to transport, store, or process into high-quality animal feed or biomass fuel. It is an essential component for breweries seeking to optimize waste management and enhance byproduct value.
Advantages of Spent Grain Dewatering Machine
01
High Efficiency
Powerful mechanical squeezing achieves lower moisture levels than traditional filters for immediate downstream processing.
02
Energy Saving
Uses a high-torque, low-speed drive, reducing energy costs by over 70% compared to thermal drying.
03
Long Service Life
Stainless steel (SUS304/316) construction with alloy-reinforced screw edges ensures a long, wear-resistant service life.
04
Full Automation
Designed for continuous operation with a self-cleaning screen to maintain high throughput without clogging.
05
Eco-Friendly
Minimizes waste volume and weight, significantly cutting transport costs and preventing environmental pollution.
06
Multiple Choice
Single shaft and double shaft series for your selection.
Working Principle of Spent Grain Dewatering Machine
The system consists of feed hopper, tapered screw shaft, cylindrical screen (filter mesh), drive motor, gearbox, and discharge regulation mechanism.
Feeding: The wet spent grain is continuously fed into the machine via the hopper.
Conveying & Compression: The internal screw shaft features a variable pitch and diameter. As the material moves along the axis, the space between the screw blades and the screen gradually narrows, generating intense mechanical pressure.
Liquid Separation: Under this pressure, the water is squeezed out through the precision-engineered screen mesh and collected in the drainage tray below.
Discharge: The dewatered "cake" is pushed toward the discharge outlet. A pressure-regulating cone or spring-loaded baffle at the outlet maintains backpressure to ensure consistent moisture reduction regardless of feed variations.
Specifications of Spent Grain Dewatering Machine
| Model | DDTH250 | DDTH300 | DDTHT350 | DDTH400 | DDTH450 | DDTH500 |
| Power (kw) | 7.5 | 11 | 15 | 18.5 | 22 | 30 |
| Speed Range (r/min) | 125-1250 | 125-1250 | 125-1250 | 125-1250 | 125-1250 | 125-1250 |
| Weight (t) | 0.75 | 1.1 | 1.5 | 2.0 | 3.5 | 5.0 |
| Capacity (t/d) | 40 | 70 | 90 | 120 | 160 | 200 |
| Floor Area (㎡） | 2.1 | 2.1 | 2.1 | 5.04 | 5.04 | 5.04 |
Notice:
1. Any change of technical data shall not be advised additionally.
2. Parameters above are for reference; final configuration is tailored to your material and capacity.
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Frequently Asked Questions
Common questions about our rotary dryers — pricing, customization, installation and after-sales.
A:
Please share your raw material, initial and target moisture content, required capacity (t/h), available fuel or heat source, and your target market. With these details our engineers can recommend the right model and send an accurate quotation.
A:
As a manufacturer, we accept orders starting from a single machine. We can also deliver complete drying production lines with auxiliary equipment such as hot air furnaces and dust collectors. Contact us for tailored pricing.
A:
Standard models are usually delivered within 25-40 days after the deposit. Customized machines or larger production lines may take longer depending on the configuration. The exact schedule is confirmed in your contract.
A:
Yes. Every dryer is engineered around your material, capacity, moisture and site layout. Heat source, material of construction, dust collection and automation level can all be customized to your process.
A:
Yes. We provide installation guidance, commissioning, operator training and lifetime after-sales support. Our engineers can also travel to your site, and all equipment comes with a warranty.
