SU1193403A1 - Ventilated grain hopper - Google Patents

Abstract

VENTILABLE BUNKER FOR .ZERNOVYH MATERIALS, containing a chamber with double perforated walls, inside which is placed an air collector, about which it is made from separate layers in order to increase the quality of drying by more uniform heating of the grain elements of trapezoidal or rectangular section, whose faces are curved along a helix. sl; about 00 4 O CO

Description

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The invention relates to a drying technique and can be used in agriculture and in the workpiece system, in particular for drying and actively ventilating the seeds of grain crops.

The purpose of the invention is to improve the quality of drying by more uniform heating of the grain.

Fig. 1 shows a bin with a chamber consisting of square elements; Fig. 2 is the same as the plan in Fig. 3, an element of square section, axonometric projection; Fig, 4 - bunker, longitudinal section; figure 5 is the same cross section; Fig. 6 shows a bunker whose chamber consists of trapezoidal section elements; 7 - the same cross section.

The ventilated bunker contains a chamber consisting of eight installed vertically drying elements 1 (Fig. 1). Neighboring elements are joined to one another to form a polyhedron. The upper part of the bunker is covered by a lid 2 in which there is an opening 3 for feeding grain and in the lower part of the bunker the elements 1 are equipped with exhaust funnels 4.. . Element 1 is a hollow box-shaped structure of square or trapezoidal cross section, the internal cavity of which is designed to accommodate the grain. The edges of the box construction form a helix. The two opposite surfaces of the drying element are perforated (the perforations of the front surface are indicated by the number--), and the other two are gas-tight.

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The air collector 8 passes through the entire height of the bunker and ends with a multi-faceted gas-tight prism 9 (Fig. 4), simultaneously performing the functions of the distributor of grain fed to the elements 1. When two adjacent elements 1 are joined together, a gap is formed, which is closed by the gas-tight plate 10.

10 A bunker (FIG. 6) may be formed by drying elements I1 to a drain ladder.

Drying the grain in the bunker is as follows.

After filling the drying elements 1 or 11 with grain, a drying agent (usually air) is supplied to the collector 8. Through holes in the walls, air penetrates the grain in the radial direction, removing moisture from it. During the drying process, a vertical movement of the grain layer along the elements 1 is performed. The grain layer located in the upper part of the element must be moved to its lower part during at least one drying cycle. Due to the design of the walls of the element 1 with edges curved along a helical line, the grain also moves in the radial direction. Such a movement of the grain and the elements 1 compensates for the unevenness of heating caused by the change in heat flow in the radial Hc1 direction. Each grain in the process of moving vertically passes all points of the temperature field existing in the radial section of the element. This achieves a high uniformity of the entity. It is obvious that uniform heating is provided if at least half of the pitch of the screw is laid along the height of element 1.

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Claims (1)

VENTILATED BUNKER FOR GRAIN MATERIALS, containing a chamber with double perforated walls, inside which an air collector is placed, with a lt; grain, the camera is made of individual elements of a trapezoidal or rectangular section, the edges of which are curved along a helical line.