Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
Patent
1992-07-14
1994-05-17
Dayoan, D. Glenn
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Condition responsive means controls separating means
209586, 209698, 209701, 198365, B07C 500
Patent
active
053119983
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates generally to sorting of items, and in a more particular sense has reference to grading of agricultural projects after harvesting and pre-market treatment.
The basic criterion of the grading quality is the accuracy of addressing the item depending on the preset values of the grading characteristics.
DESCRIPTION OF THE PRIOR ART
Known in the art are methods of grading agricultural products in the process of after-harvesting and pre-market treatment, and apparatus for realization of the methods. In this apparatus the items are fed to a monitoring zone by a piece-by-piece feeding unit to determine a current value of grading characteristics and compare it with a preset value. In doing so, the monitoring can be effected in the process of free falling of the items or directly at the feeding unit.
When the items are monitored in the course of their free falling, restrictions as to the number of fractions when grading is done by one device are possible. These restrictions take place due to a wide spread of the pathways within the location area of actuators, which are arranged along the pathway of the item. This necessitates increase in the dimensions of the actuators and causes more damage to the items being graded due to enhanced velocity of their motion (U.S. Pat. No. 4,241,835).
In case the items are monitored at the feeding unit, it is necessary to impart a definite space attitude to the products within the monitoring zone and in the course of their conveyance to the actuator. For this purpose the feeding unit is provided with cells for accommodation of the products being graded, the addressing of the products being carried out by the action of the actuators onto the cell. Hence, only one item is received by the cell, and variations in the size of the products being graded can correspondingly affect the throughput capacity when grading various items (U.S. Pat. No. 4,735,823).
Known in the art is a method of grading items fed in a flow into a monitoring zone and a device for materializing same in which the monitoring of items and subsequent addressing of each item is effected by a plurality of actuators, each having its analizing unit. (V. I. Starovoitov, A. M. Bashilov, A. L. Andershanov "Automation of monitoring quality of potatoes, vegetables and fruit", VO "Agropromizdat" Publishers, Moskow, 1987, pp. 135-139). This allows elimination of cell-shaped structure of feeding unit.
Known in the art is a method of grading items carrying out piece-by-piece single-row feeding of items into the monitoring zone and successive conveyance to the places of addressing. In this method the removal of items by the monitoring signal is done with the aid of pivotable members incorporated into the zone of the travel across the pathway of the items. The accuracy of addressing in this particular case depends on the correspondence of the values of distances between the items, the speed of their conveyance and the time of interaction of the actuators and the items (U.S. Pat. No. 4,549,272).
Known in the art is a method of grading items transferred by a conveyor having supporting members, the method providing piece-by-piece feeding in at last one row of the items into the monitoring zone, their direction to the places of addressing, measuring of a current value of grading characteristics, comparing it with a preset value, followed by distribution of the items among the places of addressing according to the results of the comparison.
In this apparatus addressing of the items is done without taking into account their type and dimensions. Known in the art is an apparatus for the embodiment of this method of grading items, comprising a feeding unit, a conveyor with supporting members, a means for directing the items to the places of addressing, a monitoring system provided with a unit for measuring a preset value of the grading characteristic linked with the actuator. Each supporting member comprises a definite number of pivotable slats which facilitate smooth disposal of the items
REFERENCES:
patent: 1432762 (1922-10-01), Ladd
patent: 2908375 (1959-10-01), Hoover et al.
patent: 3275135 (1966-09-01), Niese
patent: 3741371 (1973-06-01), Oldershaw et al.
patent: 3773172 (1973-11-01), McClure et al.
patent: 4241835 (1980-12-01), Lockett
patent: 4317521 (1982-03-01), Clark et al.
patent: 4324335 (1982-04-01), Conway et al.
patent: 4351437 (1982-09-01), Long
patent: 4549272 (1985-10-01), Hagan et al.
patent: 4586613 (1986-05-01), Horii
patent: 4726898 (1988-02-01), Mills et al.
patent: 4846335 (1989-07-01), Hartlepp
patent: 4993535 (1991-02-01), Scata
Buryan Petr L.
Lerner Moisei M.
Milgrom Moisei F.
Suschenko Alexei I.
Tarandash Khaskel A.
Dayoan D. Glenn
Reichard Dean A.
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