Cellular cylinder

FIELD: agricultural engineering and food-processing industry, in particular, equipment for sorting of cereal mixtures by grain length.

SUBSTANCE: cellular cylinder has oval-shaped cells oriented with their larger axis to cylinder generatrix. Annular guiding rims with inclined side surfaces are extending between cells along larger axis of cells. Angle of inclination of rim side surfaces exceeds angle of friction of cereal mixture components against said surfaces.

EFFECT: improved filling of cells, which is facilitated by employment of guiding rims with inclined side surfaces, and, accordingly, increased efficiency of cellular cylinder.

2 dwg

 

The present invention relates to machines for sorting grain mixtures along the length of the grains and can be used in agricultural production, milling and grain Elevator and feed mill industry.

Known for this purpose a cylindrical screening [1] according to GOST 9331-71 the Cylinders of treerow have mesh, made in the plan in the form of a circle, which do not provide one sunken in their grain orientation, and in this regard, and a clear division of their length. When such cylinder is formed a significant area of overlap of the processes of falling short and long beans.

Also known cylinder Trier, the cells of which have the shape of an oval that allows you to more precisely Orient the grain in the cell and eliminate the deficit [2] (the prototype).

The disadvantage of this cylinder Trier is not a complete filling of the cell components of the grain mixture, due to the chaotic their location relative to the major axis of the cell, which reduces its performance.

The task that needs to be addressed, is to increase the specific productivity of the cylinder Trier due to more completely fill the cell.

The problem is solved by using a cylinder Trier with mesh on the inner surface having the shape of an oval that is located more axis about perpendicular to Azusa cylinder, thus between cells along their major axis are circular guide flange, the angle of the side surfaces of which exceeds the friction angle components of the grain mixture.

Increasing the specific productivity of the cylinder Trier is achieved by orienting the major axis of the particles of the side surfaces of the annular guide flanges along the major axis of the cells and more full filling.

Figures 1 and 2 show a fragment of the sweep wire mesh surface of the cylinder Trier and its cross-section.

Cylinder 1 Trier has on the inner surface of the mesh 2, in terms of representing the shape of an oval that is located more axis perpendicular to the generatrix of the cylinder. Between cells 2 along their major axis are circular guide flange 3, the side surfaces 4 and 5 which are installed at an angle α to the horizon. In this case the angle α angle ϕ friction components of the grain mixture on side surfaces of the ribs. In the cross-section of the flanges may have different shapes - triangle, line segment, rectangle, etc. Cylinder 1 Trier may be made of various materials: metal, rubber, plastics.

Workflow cylinder Trier is as follows.

During the rotation of the cylinder mesh and the flanges are held in the lower part of the under layer of the grain mixture. For accounts the coefficient of friction components of the grain mixture are addicted up on some angle and then slide down the surface of the grain layer back down. Particles between two adjacent flanges, slip on their lateral surfaces in the cells located more axis along the major axis of the cells. The sliding of the particles on the lateral surfaces of the flanges is provided, if the angle α their slope exceeds the angle ϕ friction. This long particles (longer than the distance between adjacent ribs), lying across the ribs do not interfere with the filling of the cells short particles, as is the case in the prototype. They are in the process of working cylinder axial movement of the grain layer are moved to the next row of cells.

As a result, due to the presence of the annular guide flanges, side surfaces of which have an angle of inclination greater than the angle of friction of the components of the grain mixture that improves the filling of the cells and increases the specific capacity of the cylinder.

LITERATURE

1. Machinery for post-harvest grain handling / Bisognin, Ipharmacy, Try, Vimalagiri. - M.: Agropromizdat, 1987. Pp.61-66.

2. Copyright certificate № 188783 the USSR, IPC B 07 B 13/02. Drum Trier / AA Rassadin. No. 944390/30-15; Claimed 18.02.1965; Published 01.11.1966. Bulletin # 22 - the prototype.

Cylinder Trier with mesh on the inner surface having the shape of an oval that is located more axis perpendicular to the generatrix of the cylinder, characterized in that between the cells along their greatly the y-axis are circular guide flange, the angle of the side surfaces of which exceeds the friction angle components of the grain mixture.



 

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