SU845815A1 - Silo for active ventilation - Google Patents

Description

(54) ACTIVATED VENTILATION SILOS

The invention relates to the storage of agricultural products, namely, devices for the temporary storage and active ventilation of wet grain. A silo for active ventilation of a wet grain mass is known, containing a cylindrical body with a vertical shaft installed in the center. The disadvantage of this silo is uneven air distribution over the height of the grain mass with layer-by-layer horizontal ventilation, which reduces the effect of ventilation and safe storage of wet grain. The purpose of the invention is to increase the preservation of wet grain by venting any part of the grain grain along the silo height. The goal is achieved by the fact that inside the shaft there is a pipe with holes and horizontal partitions forming sections, in each of which are installed with the possibility of movement by means of power cylinders. elastic valves .. Figure 1 shows the lower part of the silo, the section; figure 2 - section Ana figure 1; on fig.Z - top part of the silo, section; 4 shows the upper part of the air distributor; nafkg.5 grain ventilation circuit with partial silo filling; in Fig. 6, a circuit for venting grain in one zone of the middle part of the silo; Fig. 7 shows a scheme for venting grain in the upper not filled silo; Fig. 8 is a scheme for venting grain mass in a filled silo; Fig. 9 shows an evil valve; in fig. 10 - vein knot of the mineral shaft, plan; Figure 11 is the same section. The silo consists of a cylindrical body 1. In the center of which a vertical shaft 2 is installed, inside which a pipe is mounted .3 with an opening

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M, on which are installed with the possibility of movement by means of power cylinders 4 elastic valves 5. The shaft is divided by airtight partitions 6, having hatches 7, into sections, in each of which a valve is placed. Visors are mounted on the cylindrical surface of the shaft 8. The walls of the shaft under the visors have holes 9. The top and bottom of the pipe are closed with valves 10. A cone I is mounted on the shaft. A horizontal air duct is attached to the tee 12.

13, to which two lines of axially connected axial BeHTHj iTopoBs are installed in parallel 14. The air duct 15 is connected to the atmosphere through tees of the throttle valve; A suction pipe 19 with a throttle valve 20 is installed above the roof. The air pipe 21 through the throttle valve 22 communicates with the npocTpakcTBOM nod. Air distributors 23 are installed on the internal surface of the walls, above each

of which the box 24 with Krzka 25, having a load of 26, is strengthened. The lid 25 is connected through pipe 27 by means of a pull 28 with a stopper 29 on the silo curtain.

The device for active ventilation works as follows.

Before starting ventilation, valves 18 and 22 are closed, valves 16 and 20 are closed, valves 5 are closed. Next, the fans are put into operation

14. Ventilation is carried out depending on the silo filling and the outdoor temperature. The ventilation of the lower zone at the beginning of the loading of the silo is carried out as follows. Ventilation begins when the level of the grain embankment exceeds the lower airtight partition 6, valve 5 opens only in the first zone of mine 2. Vozz enters the silo through the nozzle 19, enters the embankment through its surface, passes through the embankment, leaves the silo 8 through the opening 9, enters the vertical shaft 2 Through the valve 5. Then the air enters the pneumatic-ventilation pipe 3, the air line 13 and

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through the air duct 15 and the nozzle is ejected. The ventilation of the upper zone of the filled silo (Fig. 7) is carried out similarly to that described, but the valve 5 is opened only in the fifth zone of the mine, and the air distributors 23 are closed. Ventilation of the filled silo in zones with directed air movement in the embankment (Fig. 6) is performed similarly to ventilation of the lower zone at the beginning of silo loading, but at the same time, valve 5 is opened in any of the zones of the shaft 2 as necessary, and covers 25 are partially opened to direct air , for example, one of the diameters, as shown in Fig.6. Ventilation of the filled silo during freezing (Fig. B) is carried out at a negative outdoor temperature and allows a reduction in the specific air flow rates. The entire grain massif is vented at the same time as the lower zone is ventilated, but with all valves 5 open.

By implementing layer-horizontal ventilation of the grain mass along the silo height, the uniformity of the air distributor is improved, which makes it possible to increase the safety of wet grain.

Claims (1)

1. Sakun V.A. Drying and active ventilation of grain and green fodder. M., Kolos, 1974, p. Pi rice 30 (B). LLF yy N /  Sjiix ЬV