Criba for onions (Machine-translation by Google Translate, not legally binding)

摘要

Screen for onions, in general a screen designed for the screening of buried or horticultural products of another type as they are collected with the elimination of the residues of earth, stones, rubble branches or others that normally accompany the products collected, whose screen has has been designed for incorporation in a harvesting machine of the type of which include means for the extraction of the buried product, a first front belt (1) for the raising and raising of the products unearthed towards a first device (2) of screening through from which the waste of earth or other small waste is eliminated, the device being suitable for the delivery of the sifted products to a reception hopper (14) located at the rear of the machine and from which they can be transferred. Products, then, to a container (15) of any type, located below the hopper and supported by a conveyor belt ( 18) so that once the successive containers (15) are filled, they are transported by said belt (18) towards the outlet end for its subsequent transportation to the place of storage or consumption, characterized in that the device comprises: said first screening means (2), which is structured as an endless belt that moves according to the longitudinal direction of the machine, and which is constituted by a multiplicity of transverse elements (3) successively parallel and separated from each other by a predetermined distance, subject at both ends to chains associated with groups of lateral pinions (4), of which at least one of said pinions is motive and receives movement from a hydraulic, pneumatic, or other suitable motor member; a transverse drive means, positioned above the plane of said first screening means (2) at a predetermined adjustable height with respect to the surface of the latter, formed as an endless band (5), and endowed with a multiplicity of filaments (6) projecting orthogonally from its surface, successively separated by a predetermined distance and by means of which the branches or similar residues are dragged to a side of the machine, where they are collected for later disposal; an endless band (7), positioned after the first screening means (2), which receives the products from the latter after having experienced said first screening, animated with a variable speed movement, and capable of being positioned in height by means of respective regulating devices (8), one on each side, and each one of them provided with a respective manually operated handle (9); an endless band (13), positioned after the previous band (7) and at a predetermined distance to leave between them a gap of pre-established dimensions; a turbine (10) generating a stream of air directed towards said gap between both consecutive endless bands (7, 13) with a predetermined inclination, by which an adequate orientation is provided to the stems of the fruits (c) while it helps them in their passage through the aforementioned hollow between bands while allowing the heavier stones or rubble (17) to fall through the hole downwards; a group (11) of cut, composed of several fan-cutters (12) that on the lower part facing the fruits (c), are each protected by a closing grid that protects a respective blade associated with each fan-cutter, which moves along with it, and which cuts the stems of the fruits (c) oriented towards the fan-cutters (12) by means of the air current generated by the turbine (10), as they pass in the direction of longitudinal dragging of the device, and whose air current is also responsible for dragging the cut stems towards the outside of the device, and a ribbon (16) of variable length, which receives at one of its ends the fruits already sifted from said band (13), and which delivers them at the opposite end to said collection hopper (14). (Machine-translation by Google Translate, not legally binding)