Size Grader

Size Grader

 

an agricultural machine for separating crop seeds, fruits (apples, citrus fruit), grape stalks, potatoes, and so on by size. In the USSR size graders are produced for grading corn, sugar beet seeds, fruits, and grape stalks.

The primary working elements of the grader for separating corn and sugar beet seeds are screen mills fitted with screens with round or longitudinal holes of various sizes. The screens with round holes grade seeds by width, and those with longitudinal holes grade them by thickness into several groups. By using screens with the appropriate-sized holes, the machines can be used to grade sunflower seeds, castor beans, soybeans, kidney beans, peas, and other crops.

Size graders for sorting and grading round fruits by size or weight consist of a feeder to empty the boxes of ungraded fruits, a sorting roller conveyer along which sorting workers manually pick out nonstandard fruits, grading sections or devices, and storage trays. Band conveyers with holes of different sizes cut in the band are used in size graders for grading fruits by size. Size graders that divide fruits by weight use a grading device in the form of a conveyer with cups, into which a cellular conveyer places the fruit one at a time, and scales for weighing the cups containing the fruit. The graded fruits are carried to storage trays from which they are packed or poured into boxes.

Size graders for trimming grape stalks by length and grading them by diameter have two cutting devices, two grading rulers, and two trays set on opposite walls of the machine. In addition, the machine has compartments for picking out stalks with identical diameters; the diameter limits of the graded stalks are within 7-12 mm.

Potatoes are graded by potato-sorter assemblies and potatosorters.

References in periodicals archive ?
Tender are invited for Supply & Installation of Machinery and Equipment for Project-Primary Processing Centre (PPC) in NIFTEM At KUNDLI, Haryana- Size Grader,Size Grader,Lift Roller Grader,Control Panel,Hybrid power System
A number of upgrades for its Farmco Sliver Sizer Remover and Farmco Rotary Size Grader have been announced by Key Technology.
The Rotary Size Grader removes short pieces, nubbins, loose seeds and snipped ends of vegetables while conveying good product to downstream equipment.
Key Technology introduces upgrades for its popular Farmco Sliver Sizer Remover and Farmco Rotary Size Grader.
Farmco Sliver Sizer Removers and Farmco Rotary Size Graders can be upgraded in the field by Key service technicians or by the food processors' maintenance personnel being guided by Key's field installation manual.
Key Technology has introduced the new Farmco Precision Size Grader for high efficiency, accurate sizing.
Typical season-end maintenance on the Precision Size Grader may involve little more than changing bearings and a thorough cleaning.
Prior to installing the VeriSym SE systems, Nutra had Symetix's Impulse[R]/P size graders in-line after the continuous dryers to remove twins, clusters, empties and over- and under-diameter softgels.
With VeriSym SE in-line after the continuous dryers on discreet encapsulation lines, Nutra has repurposed its Impulse/P size graders for use elsewhere.
There are two types of mechanical sorters for solid-dose pharmaceuticals today - traditional diverging roller sorters and newer vibratory size graders.
By comparison, newer vibratory size graders feature few mov-ing parts and no rotating parts, which reduces maintenance and results in a lower total cost of ownership than diverging roller sorters.