PHƯƠNG PHÁP MÔ PHỎNG PHẦN TỬ RỜI RẠC - TRỢ GIÚP THIẾT KẾ VÀ XÁC ĐỊNH THÔNG SỐ VẬN HÀNH THIẾT BỊ PHÂN LOẠI CỦ QUẢ THEO KÍCH THƯỚC

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Tác giả: Minh Lư Lê, Tiến Thịnh Lê, Thị Hạnh Nguyên Nguyễn, Xuân Thiết Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học & Công nghệ - Trường Đại học Công nghiệp Hà Nội, 2024

Mô tả vật lý: tr.186

Bộ sưu tập: Metadata

ID: 380600

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Đối với củ quả nông sản, việc phân loại theo kích cỡ là chỉ tiêu chất lượng quan trọng phục vụ một số mục đích như sở thích của người tiêu dùng, yêu cầu của thịtrường, định giá thành sản phẩm, quy cách đóng gói, các nguyên công chế biến sau thu hoạch…. Nghiên cứu này thực hiện các mô phỏng phần tử rời rạc nhằm trợ giúp tối ưu thiết kế và thông số vận hành thiết bị phân loại kích thước củ quả nông sản dạng lồng quay (sàng lồng). Các mô phỏng tập trung xác định khả năng di chuyển của củ quả nông sản dọc theo lồng quay
thông số vận hành tối ưu của thiết bị (vận tốc góc của lồng quay) đối với năng suất thiết kế. Ma trận mô phỏng với 7 trường hợp đã được đề xuất và thực hiện. Để các quả có thể di chuyển dễ dàng dọc theo lồng quay thì các thanh khung lồng được làm nghiêng theo chiều quay của lồng một góc là 12°. Đối với năng suất thiết kế 7,2 tấn/giờ, lồng có đường kính 800mm, có 5 khoang phân loại dài 1000mm mỗi khoang, thì vận tốc góc của lồng quay tối ưu là 12,5v/ph. Phương pháp mô phỏng phần tử rời rạc hoàn toàn có thể trợ giúp các kỹ sư/nghiên cứu viên trong việc tính toán thiết kế thông số vận hành của các thiết bị phân loại củquả nông sản, giảm thiểu việc chế tạo các nguyên mẫu “prototype”, việc mà sẽ rất tốn kém về chi phí, nhân lực và thời gian.For agricultural fruits, the classification by size is an important quality indicator that serves a number of purposes such as consumer preferences, market requirements, product pricing, packaging specifications, and post-harvest processing operations…. This study performed Discrete Element simulations to assist in the design and determination of working parameters of the rotary drum sizing equipment. Simulations focused on determining the motion of the fruits along the rotating axis and working parameters of the equipment (angular velocity of the rotary drum). Simulation matrix with 7 cases has been proposed and conducted. In order for the fruits to move easily along the rotating drum, the drum frame bars are tilted in the direction of rotation of the cage at an angle of 12°. For a yield of 7.2 tons/h, a drum with a diameter of 800mm, with 5 sorting chambers of 1000mm long each, the optimal angular velocity of the rotating drum is 12.5 rpm. The Discrete Element simulation method can fully assist engineers/researchers in designing working parameters of fruit sorting equipment, minimizing the production of prototypes, which is currently high in terms of cost, manpower and time.

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