RU2589894C1 - Shaft-type air-slide drier - Google Patents

Abstract

FIELD: agriculture; machine building.

SUBSTANCE: higher efficiency of the drier and simplified design. In a shaft air-duct dryer there are drying boxes with load-carrying perforated partitions, wall of each drying duct is bent at the height of 100…200 mm from the perforated load-carrying partition over its entire length and forms a pocket with inclination angle of side wall of 35…50° vertically and 5…15° horizontally. Dryer consists of two shaft located mirrors with a gap L between walls of the pockets for removal of used air pockets ducts one level are opposed, end space between the columns is closed with a blind walls and inclined walls lower pockets are shield to form tight chamber for removal of exhaust air, which is connected by confuser in its upper part with a system of cleaning and recycling of waste air.

EFFECT: higher efficiency of the drier, and also simplifies the design and higher reliability of the process.

1 cl, 3 dwg

Description

The invention relates to agricultural machinery, namely for drying grain and other bulk materials.

Known mine aerogel dryer [1], containing a loading neck, a drying chamber with wedge-shaped boxes located one below the other, an unloading neck, the walls of the shaft have windows for the removal of waste coolant.

The disadvantage of this dryer is that the spent drying agent is discharged through windows in the shaft wall and is not reused. Due to the fact that the cross-sectional area of the outlet window is small compared to the cross-sectional area of the load-carrying partition of the aeroflot, an excess static pressure of the exhaust air is created inside the mine, which prevents the drying agent from increasing its filtration rate through the grain layer, complicates the drying process and reduces the reliability of the process of transporting material with an aeroflow At the same time, the cost of fan drive increases.

Closest to this technical solution is a dryer containing a shaft [2], in which drying boxes with perforated load-bearing partitions are installed. The wall of each drying box is bent at a height of 100 ... 200 mm from the perforated load-bearing partition along its entire length and forms a pocket with an angle of inclination of the side wall of 35 ... 50 ° vertically and 5 ... 15 ° horizontally, pockets hermetically closed with a confuser. A drying bin is installed above the shaft, and a drying bin with a dispenser is fixed under the shaft. At the ends of the shaft are fixed air distribution ducts with movable shutters.

The disadvantage of this design is the low productivity of the dryer, which is limited by the design features of the aeration channel and cannot be significantly increased due to its geometrical dimensions, so when it is installed in the production line, to increase the productivity of the drying line, an increase in the number of such dryers with cyclones, cleaning devices, mixing and distribution of recirculated air, the number of fans, which will increase the energy intensity of the process , reduce its reliability and increase the metal structure.

The present invention is aimed at improving the performance of the dryer for grain and other bulk materials, simplifying its design and improving the reliability of the process.

The problem is solved in that the mine aerogelous dryer, in which drying boxes with perforated load-bearing partitions are installed, the wall of each drying box is bent at a height of 100 ... 200 mm from the perforated load-bearing partition along its entire length and forms a pocket with an angle of inclination of the side wall of 35 ... 50 ° vertically and 5 ... 15 ° horizontally, according to the invention, the dryer contains two shafts that are mirrored to each other with a gap L between the walls of the pockets to remove exhaust air, the pockets are robes of the same level are located in opposition, the end space between the shafts is closed by blind walls, and the inclined walls of the lower pockets are connected by a visor to form a sealed chamber for removing exhaust air, which is connected via a confuser in its upper part to the exhaust air purification and recirculation system.

The proposed design of a mine aerosene dryer for drying grain and other bulk materials due to the distinguishing features provides a solution to the problem of increasing the productivity of the dryer for grain and other bulk materials, simplifying the design of the dryer and increasing the reliability of the process

The design of a shaft aerogel dryer is illustrated in FIG. 1-3.

In FIG. 1 shows a general view of a shaft aerobelic drier.

In FIG. 2 shows the layout of the pockets of two mirrored boxes.

In FIG. 3 shows a connection diagram of two pockets of lower mirror-mounted boxes.

The dryer contains two shafts 1 (Fig. 1), consisting of drying ducts 2 (Fig. 1-3), in which aerodynamic ducts with load-bearing perforated partitions 9 (Fig. 2, 3) are installed. The shafts are mirrored to each other with a gap L between the walls of the pockets 7 for removing exhaust air, the pockets 7 of the boxes of the same level are located in opposition (Fig. 1-3), the end space between the shafts is closed by blind walls, and the inclined walls of the lower pockets 7 are connected by a visor 8 for the formation of a sealed chamber to remove exhaust air. Above the chamber there is a confuser 3 of an exhaust air purification and recirculation system. A drying hopper 4 is installed above each shaft, and drying bins 6 are fixed under the shafts. At the ends of the shafts, air distribution boxes 5 are mounted (heat generator, cyclones of the exhaust air cleaning and recirculation system, cooler, ducts and fans are not conventionally shown).

Mine aerogel dryer for drying grain and other bulk materials works as follows: the material is loaded into the drying hopper 4 of one of the mines on the load-bearing perforated partition 9 of the upper drying box 2, where it is exposed to jets of air coming out at an acute angle from the cracks of the load-bearing perforated partition 9 Drying occurs when heated air passes through a layer of bulk material. The material sequentially passes through the drying boxes 2 of one mine and enters the drying hopper 6 of the first mine, from which, using a transporting device (not shown), the material is fed into the drying hopper 4 of the second mine. In the second shaft, as well as in the first shaft, the bulk material passes sequentially through the drying boxes 2 and enters the drying bin 6 of the second shaft. From the drying hopper 6 of the second shaft, the dried bulk material is transported to the cooler by a conveying device.

During the passage of heated air through a layer of bulk material, its gradual saturation with moisture occurs. The exhaust air with dust and light impurities is sent to the pockets 7 of the drying boxes 2, enters the sealed chamber to remove the exhaust air between the mines and through the confuser 3 through the air duct enters the dust and light impurities cleaning system, then part of the warm exhaust air is directed through a special air exchanger for recycling to the heat generator, and the other part is thrown out.

When setting the dryer to the specified mode of operation, as well as during its maintenance, granular material may be ejected outside the drying boxes 2 into the airtight chamber to remove the exhaust air, where they drop down the airtight chamber and slide along the visor 8 and the walls of the pockets 7 into the lower drying boxes, which eliminates the loss of bulk material during its drying and facilitates the maintenance and operation of the dryer.

The design of the dryer provides an increase in productivity, simplification of the design of the dryer and increase the reliability of the process, it is easier to manufacture, technologically advanced and allows for the recycling of exhaust air, the energy consumption of the process and the metal consumption of the structure are also reduced.

Information sources

1. RF patent 2151983, IPC ⁷ F26B 3/08. The method of drying agricultural products [Text] / E.M. Zimin, BC Krutov, M.S. Volkhonov; Applicant and patent holder FGOU VPO Kostroma State Agricultural Academy. - No. 98105188/06 (005259); declared 03/17/98; publ. 06/27/00, bull. Number 18. - 5 p., Ill.

2. RF patent 2506508, IPC F26B 17/14. Mine aerogel dryer [Text] / M.S. Volkhonov, S.V. Kurilov, S.A. Polozov, I.S. Zyrin, I.S. Kudryashov; Applicant and patent holder Limited Liability Company “Warm Wind”, publ. 02/10/2014, bull. Number 4. - 7 p .; silt

Claims (1)

Mine aerogel dryer, in which drying boxes with perforated load-bearing partitions are installed, the wall of each drying box is bent at a height of 100 ... 200 mm from the perforated load-bearing partition along its entire length and forms a pocket with a side angle of 35 ... 50 ° vertically and 5 ... 15 ° horizontally, characterized in that the dryer contains two shafts that are mirrored to each other with a gap L between the walls of the pockets to remove exhaust air, pockets of boxes of the same level are located opposite Alternatively, the end space between the shafts is closed by blind walls, and the inclined walls of the lower pockets are connected by a visor to form a sealed chamber for removing exhaust air, which is connected by means of a confuser in its upper part to the exhaust air purification and recirculation system.

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