SU1383068A1 - Shaft grain drier - Google Patents

Abstract

Invention m. used in agriculture for drying 21 17 of other materials in the procurement system. The purpose of the invention is to increase the productivity and intensify the drying process. All zones of the grain dryer are made as autonomous blocks K 2, 3, installed one above the other with the formation of a vertical row. The number of blocks 1 of the drying zone corresponds to the specified capacity of the grain dryer. Vertical p - dy are installed close to each other. The furnace 24 for preparing the heat carrier further comprises a flame tube 10 enclosed in an intake manifold 9. The collector 14 adjoins the drying and cooling zones 1, and the last 5 chambers are connected to the collector 14 via ducts. Layout of a grain dryer (С (Л с:

Description

1383068

of the required number of blocks unifies the process of manufacturing grain dryers of various capacities in

This allows the blocks to grow in vertical and horizontal directions. 4 hp f-ly, 12 ill.

one

The invention relates to the field of drying bulk materials, such as grain, and can be used in the harvesting system and agriculture.

The purpose of the invention is to increase the productivity and intensify the drying process.

Figure 1 shows the block of the drying zone; figure 2 is the same, the view in the plan; in fig. 3 shows section A-A in FIG. 1, on fi1. 4 - preheating zone unit; figure 5 is the same, the view in the plan; FIG. 6 is a section BB in FIG. 4, in FIG. 7 is a layout diagram of a grain dryer, state w; and two blocks of preheating and cooling; in fig.

I -

the same of three

blocks: preheating, drying and cooling; , figure 9 - mine grain dryer with a two-row layout of blocks, general view; figure 10 is a view In figure 9; FIG. 11 shows a layout-technological scheme of a mining grain dryer of extra capacity with five blocks, two of which are cooling, two drying and one is preheating; Fig. 12 shows the layout and assembly of blocks with an intermediate cooling zone.

The shaft dryer (Figs. 1-6) contains a drying zone, consisting of a set of the required number of units 1, which ensures a given performance, the preheating unit 2 and the cooling unit 3. Each block 15 2 and 3 contains grain columns of 4 with feed and discharge boxes arranged in a checkerboard pattern. On the sides of the columns 4 of the whole; ex units, discharge chambers 5 and supply chambers 6 are located, in the end walls of which there are technological hatches 7, which are also man-shaped. Each unit 1 of the drying zone contains a fan 8 connected

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a suction pipe to the intake manifold 9 adjoining the block end, with a flame tube 10 built into it. The intake manifold 9 is connected to a diverting chamber 5 by means of an air duct 11 with a two-way valve 12 of the type closed-open. The delivery pipe 8 is connected to the upper compartment 13 of the feed chamber 6, and through the manifold 14 it communicates with the lower compartment 15 of the feed chamber 6 of the overlying unit 1. The preheat block 2 contains a dust chamber 16 adjacent to its end. 17. Blocks 1 and 2 may contain an adjacent compartment 18 of one of the ends of the operational bunker 19 with a grain transport mechanism section 20 integrated in it. The grain dryer contains a raw grain hopper 22, a grain unloading mechanism 23, top 24, connected through the flame tube 10 to the intake manifold 9, the Zharov tube 10 is perforated in the drying zone perforated in the block 1 and provided with a ring nozzle 25 of cold air intake with an annular regulating damper 26 in the lower part. mechanism 21, and also contains a cutter compartment 28, adjacent directly to the discharge chamber 5 of the preheating unit 2 and connected to the dust collectors 17. The grain transport mechanism 21 comprises ntu 29 with buckets 30,

Shaft grain dryer (Fig, 7) works as follows.

From the feed hopper 22 of the raw grain, the grain is fed by the transport mechanism 21 to the super-dry bunker 27, from where excess grain is fed back by the belt 29, with the buckets 30 it is raked into the operative bunker 19, and

the bulk of the grain enters the grain columns 4 of the preheating unit 2. Having removed some of the moisture, the dried grain goes further into the grain columns of block 3 of the cooling zone, after which the grain unloading mechanism 23 is removed from the dryer or returned to recirculation to the super-dry bunker 27. The air and drying agent are supplied as follows. Atmospheric air through the open process hatch 7 of block 3 of the cooling zone, operating under vacuum, enters the feed chamber 6 and passes through the duct of grain columns 4 and a layer of grain between

5, from where it is directed through the air duct 11, at the position of the flap 12 Open to the intake manifold 9, where it mixes with the hot flue gases coming from the furnace 24 through the flame tube 10 that is perforated in the blocks 2 in the intake manifold 10. Heated valve drying agent The torus 8 is taken from the intake manifold 9 and fed to the manifold-distributor 14, from where it evenly enters the feed chamber 6 of the overlying block 1 and, having passed through the duct and the grain layer between them, goes into the discharge chamber 5 separated from the lower chamber lying horizontal partition block. Next, the spent drying agent enters the dust removal compartment 28 of unit 1 and then to the dust cleaning unit into the dust separators 17 located in the dust chamber 16. After the dust chamber 16,

The pulling agent is dried through its louvered walls to the atmosphere.

Shaft grain dryer (Fig.8) is assembled from blocks 1-3. In this case, the fans 8 of unit 2 and 3 are connected in parallel. The air and the drying agent are moving as follows. Cold air through the open process hatch 7 of the lower block 3 of the cooling zone enters the supply chamber 6 and, after passing through the duct and the grain layer between them, enters the discharge chamber 5, from where it passes through the damper 12 in the Open position to the collector 9, it is mixed with the hot flue gases flowing through the flame tube 10 from the furnace 24. Heat up to the required temperature, the drying agent by fans 8 of both

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units 2 and 3 from intake manifold 9, then by fan 8 of unit 3 is supplied through manifold 14 into the lower compartment of the supply chamber 6 of the overlying unit 2 drying zones and, having passed through the duct and a layer of grain between them, enters the diverting chamber 5 drying unit 2, from where, when the flap 12 is in the closed position, enters the exhaust chamber 5 into the atmosphere of the preheating unit 1 and is released through the separator 17 to the atmosphere. The fan 8 of the unit 2 delivers the heated drying agent through the manifold-distributor 14 to the lower compartment of the supply chamber 6 of the overlying unit 15 which; having passed through the box and a layer of grain between them, enters the discharge chamber 5, from where, together with the selected heat carrier, the drying zone enters the pd compartment 28 and passes through it into dust and dust separators 1 7 and partially clears out of them into the dust chamber 16, where the pti precipitation occurs. and the purified spent drying agent is expelled to the atmosphere through the louvered walls.

When assembling a grain dryer of two rows of blocks (in Fig. 9), the connection circuit of fans and blocks, depending on the position of the shutters 12 and the presence of partitions between the discharge chambers of the blocks, can be parallel or sequential with the use and cleaning of the spent drying agent.

The layout of the grain dryer of the above capacity is shown in FIG. 11. In this case, the two lower blocks 3 operate under vacuum for cooling, and the three blocks 1 and 2, located above, work under pressure like drying ovens. The fans 8 of all three blocks are connected in parallel to the cooling zone through the intake manifold 9, and each of them delivers the hot drying agent to the upstream block through the manifold-distributor 14. The discharge chambers of the cooling blocks are separated from the discharge chambers of the horizontal blocks 2 horizontal septum.

The block assembly scheme with an intermediate cooling zone is shown in Fig. 12. Cold air intake in block 3 is carried out through the technological hatch 7, and the supply of sushi agent

The fans of the fan are made through the manifold-distributor 14 of the overlying block 2 or block 1. In this case, the discharge chambers of the underlying three blocks are separated from each other by horizontal partitions. The rest of the pattern of movement of the grain, air and the dryer agent is similar to those described. In addition, the diverting chamber 5 of the intermediate block 3 of the cooling zone is provided with a vertical partition forming the diverting channel 5 connecting the diverting chambers of the blocks 2.

The arrangement of a grain dryer of the required number of blocks allows maximum unification of the manufacturing process of grain dryers of various capacities. The assembly is carried out by installing one block on another, and the increase in productivity is provided by increasing in vertical and horizontal pressure.

blocks. This will reduce the 25 throttling flaps.

to minimize the time required for the installation of the dryer, to improve the quality of its production and to reduce the capital costs of its construction.

Claims (2)

Invention Formula 1. A mine grain dryer containing a super-drying bunker with a loading mechanism, a furnace for preparing a heat transfer fluid connected to fans for supplying the heat transfer fluid to the preheating and drying zone, the cooling zone with its own fan, and a discharge device, all of which are supplied and discharge ducts with corresponding chambers for heat carrier, characterized in that, in order to increase productivity 0 30686 and intensification of the drying process, all zones are made in the form of autonomous blocks installed one above the other with the formation of at least one vertical row in which the number of blocks of the drying zone corresponds to a given productivity of the dryer, and the vertical rows are installed close to each other, the furnace additionally contains a flame tube enclosed in the intake manifold adjacent to the drying zone blocks 20 five and cooling, and the discharge chambers of the latter are in communication with the collector through ducts, 2. Zernosushilka pop.1, characterized in that the heat pipe in each block of the drying zone is perforated, and the air ducts are equipped with a two-way valve of the closed-open type. Zero grain dryer according to claim 2, characterized in that during polo the chambers of two adjacent drying units are separated by a partition, and when the position is closed, these chambers are communicated. 4. The dryer is nl, characterized in that5 that the inlet chamber of each block of the drying zone is divided into two compartments connected to each other through the discharge chamber of this block, while the lower compartment communicates with the upper compartment of the lower block and the upper compartment with the lower compartment upstream block by means of manifolds - distributors. 5. Grain dryer pop. 1, characterized in that at the place of connection to the firebox the heat pipe is provided with an annular inlet of cold air intake with a control valve. UQDQuug QDUDCig QudQCjC / QQjuQU / I 20 / 7 go /  "five, l y. (Y (Y; y (/ C X rl / 1 12 2 L l N / Y Fiz. 26 .sixteen / 7 five -7 9 and g, 9 7 Fig.Yu Fig.I gd 9 us. 12.