Passion Fruit Washing and Grading Line Workflow
Conveying ➡ Washing ➡ Air-drying ➡ Grading
1. Conveying Stage
Upon entering the fruit processing line, passion fruits are first conveyed through a feeding mechanism to ensure orderly feeding. The conveying system is designed for smooth operation and controllable rhythm, enabling even distribution of the fruits while preventing accumulation or collision. An appropriate conveying speed provides favourable conditions for subsequent washing and grading.
2. Washing Stage
Washing constitutes one of the most critical steps in the entire passion fruit processing line. This stage primarily removes soil, dust, and impurities adhering to the fruit's surface during harvesting. The brush roller washer machine employs a combination of multi-angle spraying and rotating brushes to achieve comprehensive cleaning as the fruit tumbles. This method ensures surface cleanliness while preventing damage to the skin.
3. Drying Stage
Post-washing, passion fruit surfaces often retain moisture. Untreated, this can compromise grading accuracy and subsequent packaging quality. The drying process employs forced-air circulation to rapidly evaporate surface moisture, achieving a dry finish. This treatment affects only the exterior, preserving the fruit's internal integrity and maintaining its original quality.
4. Grading Process
The grading operation automatically sorts passion fruits based on diameter or external dimensions. A roller grading system facilitates the natural separation of different sizes during transit. The grading results are clear and consistent, facilitating subsequent sales by grade or further processing.
Main passion fruit processing machine
1. Feeding Conveyor
The feeding conveyor serves as the initial equipment in the entire passion fruit washing and grading line, integrating both conveying and soaking cleaning functions. Operating smoothly, it effectively buffers the feed rate from upstream, enabling preliminary sedimentation and impurity separation of passion fruit prior to the washing stage, thereby creating optimal conditions for subsequent cleaning.
2. Brush Roller Washer Machine
This brush roller washer machine features soft nylon brushes that gently contact the passion fruit surface during rotation. While propelling the fruit forward, it delivers uniform cleaning.
This method thoroughly covers all areas of the fruit's surface while avoiding damage to the skin from abrasive friction, making it particularly suitable for passion fruit requiring high visual integrity.
3. Air Drying Machine
The strong air drying line employs high-efficiency fans to generate a stable airflow, rapidly removing surface moisture from the passion fruit. During conveyance, surface water is swiftly dried, effectively reducing residual moisture's impact on subsequent processing or packaging stages while helping maintain the fruit's pristine appearance.
4. Fruit Grading Machine
The roller type fruit grading machine employs a rotating spiral shaft to drive parallel motion, propelling the rollers forward. As the passion fruits roll along, they fall through corresponding gaps according to their diameter, achieving automatic grading. Featuring a mature structure and stable operation, the fruit grading equipment has a capacity of approximately 2–3 tonnes per hour, with adjustable grading dimensions. We offer multiple grading machines tailored to different fruits and vegetables; please contact us at any time for customised solutions.
Parameters of Passion Fruit Processing Line
| Specification | Details |
| Processing capacity | 500–3000 kg/h |
| Suitable fruit diameter range | 31–100 mm (customisable) |
| Cleaning method | Spray wash + rotating brushes |
| Grading levels | 3–6 grades (optional) |
| Equipment material | Food-grade stainless steel |
| Power supply | 380 volts / 50 hertz |
| Total installed power | 6–15 kW |
Application of the Passion Fruit Washing and Grading Processing Line
Beyond passion fruit, this washing and grading processing line is equally suitable for processing a variety of fruits, such as:
- Mangosteen
- Citrus fruits
- Limes and lemons
- Guavas
- Small citrus fruits
- Apples
- Peaches
By appropriately adjusting the washing intensity and grading intervals, the passion fruit washing and grading line can accommodate diverse fruit processing requirements, thereby enhancing equipment utilisation rates.
Features of Lonkia Fruit and Vegetable Processing Equipment
1. High-efficiency Processing Capacity
The entire fruit processing line employs continuous automated design, with seamless integration of conveying, washing, drying and grading operations. It operates stably, is suitable for prolonged continuous operation, and ensures consistent output.
2. Robust and Durable
Constructed from food-grade stainless steel, the passion fruit washing and grading line is sturdy and reliable. It is suitable for high-frequency production environments and meets the stringent hygiene and durability requirements of the food processing industry.
3. User-Friendly Operation and Maintenance
The passion fruit processing machine features a modular structural layout with an intuitive control system interface and straightforward parameter adjustment. Daily cleaning and maintenance tasks are simplified, reducing operational complexity and maintenance costs.
4. Flexible Customisation and Adaptability
The passion fruit production line can be tailored to client-specific capacity requirements, factory layouts, and fruit specifications. It supports future upgrades and expansion needs.
An Australian fruit processing enterprise has acquired our passion fruit processing line. This client primarily serves both domestic markets and export channels, demanding high consistency in fruit appearance and precise grading accuracy. Following thorough preliminary discussions with Lonkia's technical team regarding material characteristics and production capacity requirements, targeted adjustments were made to the brush structure, air-drying intensity, and grading intervals. Upon delivery and commissioning, the passion fruit processing line demonstrated stable processing operations with clearly defined grading outcomes, fully meeting the client's specifications.
