Manual chestnut grading is slow and tiring.More processors are turning to automated drum screen graders.The Fstsort drum screen grader automates size sorting with round holes and gentle tumbling – no cracking, no jamming. Capacity: 3-8 t/h, 3-6 grades, stainless steel. Check the product page for details or request a quote.
Chestnut is a common nut with a brown or dark brown shell, usually round or oval in shape. The shell has spines, the shape and density of which vary from species to species.
Chestnut has a firm and soft texture, a rich aroma and sweetness, a rich taste and a balanced taste. It is also rich in carbohydrates, proteins, fats, dietary fiber and other nutrients.
Chestnuts are one of the most beloved nuts worldwide, valued for their rich aroma, sweet taste and high nutritional content. However, fresh chestnuts have limited shelf life and must be processed quickly after harvest to preserve quality and prevent spoilage. For growers and packers, efficient sorting by size is essential – yet many still rely on manual grading, which is slow, labor-intensive and often inconsistent.
The Fstsort drum screen grader is specifically designed for automatic size sorting of chestnuts by diameter. Unlike roller graders (which are not suitable for chestnuts), the drum screen grader uses round holes and gentle tumbling action – the preferred method for chestnut packers worldwide. In addition, Fstsort chestnut sorting equipment is designed to be user-friendly and easy to operate, so even staff without professional technical background can easily get started.
How it Works
Chestnuts enter a roating drum. As the drum turns, chestnuts fall through round holes of increasing sizes. Each size category falls into a separate outlet, while the gentle tumbling action ensures no cracking or jamming.
Key Feature & Benefits
Feature | Benefit |
|---|---|
Round holes | Match the natural round/oval shape of chestnuts for accurate sizing |
Gentle tumbling | No crushing， no cracking， no jamming – preserves nut integrity |
Consistent sizing | Precise diameter separation for uniform product quality |
3–6 adjustable grades | Customize grade sizes to match your market requirements |
Low maintenance | Simple design， easy to clean and operate |
Technical Specifications（Customizable）
Parameter | Reference Range |
Capacity | 3–8 t/h（up to 5–10 t/h on request） |
Number of grades | 3–6 |
Material | Stainless steel（food contact） |
Voltage | 380V |
✅We can customize any size you need
Why Choose Fstsort‘s Drum Screen Grader？
1. Proven technology – Drum screening with round holes is the industry-preferred method for chestnuts, ensuring accurate sizing without damaging the nuts.
2. Scalable capacity – From 3 to 8 tons per hour(expandable to 5–10 t/h), our grader can handle small farms and large packers alike.
3. Flexible grading – Adjust the number of grades(3–6) and set diameter ranges to match your specific market needs – from small nuts for processing to jumbo nuts for premium export.
4. Low operating costs – Simple mechanical design requires minimal maintenance and training. Staff without professional technical background can easily get started.
5. Complete integration – The drum screen grader can be used alone or combined with our chestnut washing line(bubble washing tank + brushes + air blowers + roller inspection table) for a complete processing solution.
Would you like to learn about our complete chestnuts processing line?👉🏻Please see our page for the processing line products of chestnuts.