Crop threshing or separating – Cleaner
Patent
1996-08-09
1998-04-07
Melius, Terry Lee
Crop threshing or separating
Cleaner
460144, 460145, 171124, A01D 4600
Patent
active
057357404
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. The Technical Field
This invention concerns agricultural machines or, more exactly, equipment for separating vegetables and root-crops from admixtures.
2. The Prior Art
A common device for separating potatoes from admixtures such as soil, rocks and weeds, contains a cylindrical drum with an elastic surface and a transporter with elastic fingers for picking vegetables or root-crops. The transporter is made as a horizontal endless band which is placed under the drum and has a clearance smaller than the length of the elastic fingers. The drum has a drive providing it with line velocity, which is faster than that of the transporter. Under the lower branch of the transporter band, a contrary rotating brush is placed so that it interacts with the transporter fingers, as shown in SU A 1685005.
For example, a mixture of mother and rotten potatoes is carried along the upper part of the transporter. Moving along the transporter band, the root-crops pass under the drum. At this moment, the rotten potatoes are squashed and stick to the fingers, while conditional root-crops move non-damaged under the drum and leave the transporter. The stock root-crops move to the lower band of the transporter, and, under the influence of vibration, and then of the brush, are then taken away to another transporter.
This device is not effective for separating vegetables like tomatoes and peppers from the admixtures because these vegetables are damaged by the drum when it interacts with a heap of vegetables. Therefore, this device is not universal and its application is limited.
Another known device for separating root-crops from admixtures comprises a working organ of an agricultural machine for root-crop processing. This device consists of a finger-hill with upper and lower parts made of separate transporting contours placed at different angles to the horizontal. This working surface of the upper part is fixed under a larger angle than that of the lower part. Both parts are angled downward. A contrary rotating brush is placed over the descending part of the hill, as shown in SU A 158 3018.
Having a small difference in rolling friction coefficients over the finger-hill transporter, rounded clods roll down the more steep upper part. If they are rolling down a less steep lower part, they are caught by the brush and led to the root-crop fraction. If the clods roll together with the fingers of the lower part of the hill, they cannot be led to the transporter carrying out the admixtures because the fingers on the upper part of the hill drop the clods to the brush. This decreases the separating coefficient of the admixtures. Thus, the above-mentioned device can separate only admixtures with an equivalent diameter, which is smaller than the interfinger clearance of the transporter.
SUMMARY OF THE INVENTION
It is therefore an object of the invention to create a device for separating vegetables and root-crops from admixtures that is not dependant on the size of the admixture fractions. This object has been attained by changing the transporter's construction.
This object is achieved as follows: The device for separating vegetables and root-crops from admixtures comprises a transporter with protruding fingers mounted at an inclined angle and receiving the separating products, and an appliance for carrying out the vegetables. The appliance is placed after the transporter. The transporter has at least one bent part of the upper bed, in the region of which the protruding fingers of the transporter move apart and the separating products fall between them. Behind this region, the fingers draw together with sufficient force to clamp and/or destroy at least some part of the admixtures.
The transporter preferably has at least one tensioner for the upper bed forming the bent and inclined parts, and a plurality of rollers mounted on the frame along the transporter to regulate the length and the angle of the pitch of the corresponding inclined parts.
All of the inclined parts of the transporter preferably have an angle of i
REFERENCES:
patent: 3810512 (1974-05-01), Porter
patent: 4407370 (1983-10-01), Small et al.
Kindzersky Vasily Vasilievich
Tarasenko Vladimir Vitalievich
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