
Fstsort modular mandarin line: washing, waxing and drying + choose your grader – drum grader (diameter), electronic weight sorter (±2g), or optical sorter (blemish detection). Custom capacity & grades. No fixed models – we design for you. Get quote.
Product Overview – A Modular Line for Mandarin Processing
Mandarins are a low-margin fruit, so we design efficient, high-value lines – not just standalone graders.
Our modular mandarin processing line consists of:
Infeed section (you choose one of two options):
Option A: Water tank & sprinkles + brushes (wet cleaning)
Option B: Hopper & elevator + brushes (dry infeed, then wet cleaning)
Middle section (standard for all configurations):
Waxing section → Air blowers (drying)Back-end (you choose one):
Drum grader – sorts by diameter
Electronic weight sorter – sorts by weight (±2g accuracy)
Optical sorter – sorts by external defects (color, blemish, shape)
Application:
Round or oblate fruits like citrus, orange, mandarin, tangerine, clementine, apple, tomato, etc.
Infeed Section – Two Options
Customers can choose between two infeed configurations depending on their fruit condition and budget.
Option A – Water Tank & Sprinkles + Brushes (Wet Cleaning)
This is the complete cleaning solution. It includes a water tank with sprinkles for soaking and pre-washing, followed by brush rollers for deep cleaning.

Best for:
Fruit with heavy dirt, leaves, or debris
Customers who want the most thorough cleaning
Higher budget lines
Components:
Water tank with sprinkles – soaks and loosens dirt
Brush rollers – deep cleaning
Option B – Hopper & Elevator + Brushes (Direct to Brushes)
This is the simplified infeed. Fruit goes directly from hopper to elevator to brush rollers – no water tank.

Best for:
Fruit that is relatively clean already
Customers with lower budget
Smaller footprint
Components:
Hopper – manual or belt feeding
Elevator – gently lifts fruit to brushes
Brush rollers – wet cleaning (sprayers added on brushes)
✅ Both options include brushes with water spray for effective cleaning. The difference is whether a water tank is used before the brushes.
Middle Section: Waxing & Drying (Standard for All)
After cleaning, all lines include:
Component | Function |
|---|---|
Waxing section | Applies food-grade wax for shine and extended shelf life |
Air blowers | Removes excess moisture before grading |
Key features:
Adjustable speed, high capacity, high efficiency
Gentle handling – soft brushes and low drops
Conveyor belt under each grade – carries large capacity
Can be customized with roller inspection table for manual defect removal
End with a bag closing device or weighing system as needed
Back-End: Choose Your Grading Technology
After washing, waxing and drying, you select the grading method that suits your market.
Option A – Size Grader (Diameter Sorting)
The drum size grader sorts mandarins by diameter using rotating drums with round holes. This is the traditional, high-capacity method for citrus.
Parameter | Reference Range | Customizable |
|---|---|---|
Capacity | 3–10 t/h | ✅ Yes |
Number of grades | 4–8 | ✅ Yes |
Sorting principle | Diameter (round holes) | ✅ Yes |
Best for | High volume, standard market grades | ✅ Yes |
✅ Ideal for: Large packers who need simple, fast diameter sorting.
Option B – Electronic Weight Sorter (Weight Sorting)
The electronic weight sorter sorts mandarins by weight with high precision (±2g). It is available in rotary (compact) or linear (multi-lane) designs.
Parameter | Reference Range | Customizable |
|---|---|---|
Capacity | 10,000 – 30,000 pcs/h/lane | ✅ Yes (1–4 lanes) |
Number of grades | 5–12 exits | ✅ Yes |
Weighing range | 30–500 g | ✅ Yes |
Accuracy | ±2 g | ✅ Yes (±1g available) |
Best for | Uniform weight packing (e.g., 1kg, 2kg bags) | ✅ Yes |
✅ Ideal for: Packers who sell by weight (retail bags, export orders).
Option C – Optical Sorter (Defect Sorting)
The optical sorter uses high-speed cameras to detect external defects that diameter or weight graders cannot see. It automatically removes defective fruit.
Defect Type | Examples |
|---|---|
Color defects | Green spots, uneven ripening, discoloration |
Surface blemishes | Scars, russeting, insect damage |
Shape defects | Deformed, irregular mandarins |
External rot | Visible decay, mold |
Parameter | Reference Range | Customizable |
|---|---|---|
Capacity | 3–8 t/h | ✅ Yes |
Number of outputs | 2–4 (good / bad / color-sorted) | ✅ Yes |
Best for | Premium export, replacing manual sorting | ✅ Yes |
✅ Ideal for: Premium markets that require flawless appearance.
Project:
Mandarin washing waxing sorting line cstomized for client from Bangladesh

Citrus washing drying waxing grading line

