RU1790335C - Hopper for storage of grain products - Google Patents

Abstract

Appointment: for storage of grain products. SUBSTANCE: hopper comprises a housing with a conical bottom and an outlet funnel in the center, as well as a device for product ventilation, including discharge and suction air ducts. The ventilating device comprises louvred ducts; the height of the housing is inclined at a height inclined to the outlet funnel. In each louvered duct there is a longitudinal partition with the formation of wedge-shaped channels. 2 ill.

Description

The invention relates to the field of receiving and processing cereal products, in particular to the design of a silo for storing cereal products and a device for ventilating the product.

A grain storage bin is known, comprising a conical bottom housing in the center of which an outlet funnel is provided, and a product ventilation device including discharge and suction ducts. Air is supplied from the bottom up to the hopper through the discharge air duct. Exhaust air is directed to a suction duct mounted on top of the hopper.

However, this device has a significant drawback, since the air passing through the large thickness of the grain layer along the height of the hopper and the lower layers of the product experience very high pressure from the gravity of the upper layers. If we take into account the fact that the height of modern bins in many cases reaches 40-50 m (for example, on elevators), then the mass of the product in

One bunker is several tens of tons. The lower layers of the product are highly compacted and obstructed. The movement of air in the grain mass from the bottom up (or horizontally). Therefore, the ventilation efficiency is low. In addition, it takes a long time to ventilate the product and a large fan power to blow fresh air and suck the exhaust through product layers with a large thickness. At high hopper heights, uneven ventilation of all product layers is observed and food safety is reduced.

The aim of the invention is to increase the safety of products and reduce energy costs.

This goal is achieved by the fact that the device for ventilating the product contains louvered air ducts, installed in height along the height of the casing with an inclination to the outlet funnel, and a longitudinal partition is placed in each louvered duct with the formation of a wedge

with

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3

00

ate

with

ny channels, the upper of which are connected to the discharge air duct, and the lower ones to the suction;

Figure 1 shows a silo for storing cereal products; Fig. 2 is a schematic cross-sectional view of a grain storage bin and a device for venting a product.

In the hopper 1 with a loading nozzle 2 and an outlet funnel 3 there is a device for ventilating the product with tambour air ducts 4. The louvred ducts 4 are installed along the height of the housing of the hopper 1 inclined to the outlet funnel 3. A longitudinal partition 5 is placed in each louvered duct 4 with the possibility of forming wedge-shaped channels b and 7. The upper channels 6 are connected to the discharge 8 air duct 8, and the lower 7 to the suction 9 (section A-A). Between the inner wall of the hopper 1 and the outer ends of the louvered nozzles and in the center of each channel of the louvered air ducts 4, there are outlet openings 10 and 11 used when loading and unloading the product hopper.

The device operates as follows. .-. -; ,, ..; ..

Air is supplied through the discharge air ducts 8 and the upper channels b of the louvred nozzles in parallel to the product layers in the hopper. Air

moving up between the particles of the product it is ventilated (cooled or heated during drying, cleaned of light impurities, etc.).

The small thickness of the product layer above the ducts promotes a better interaction of the product particles with air due to the presence of sufficient free space between the particles

his. This drastically reduces product ventilation time and energy consumption. Air passing through the product layers above each bed of louvered air ducts reduces (or raises) the temperature of the grain product, carries away light impurities and moisture. The exhaust air is directed through the lower channel 7 and the suction ducts 8 to the separator, where the separation of light impurities and

moisture from the air mixture. The wedge-shaped shape of channels b and 7 provides the supply and exhaust with the same air velocity along the entire length of the louvered air ducts 4. The presence of louvers on channels b and 7 facilitate the directional movement of air flow in the product layers.

The proposed device allows the ventilation of products: cooling of embankments, their freezing,

drying grain products, eliminating self-heating, heating seeds before sowing, degassing.

Claims (1)

SUMMARY OF THE INVENTION A hopper for storing cereal products, comprising a housing with a conical bottom, in the center of which an outlet funnel is made, and a device for ventilating the product, including a discharge and suction air ducts, such that In order to increase the safety of products and reduce energy consumption, the ventilation device contains louvered air ducts, installed along the height of the casing with a slope to the outlet funnel, and in each louvered duct there is a longitudinal partition with the formation of wedge-shaped channels, the upper of which are connected to the discharge air duct, and the lower ones to the suction. .