JP2022013233A - Grain drying apparatus and grain drying method for grain drying apparatus - Google Patents

Abstract

To provide a grain drying apparatus which can realize reception of a large amount of grain and drying of a large amount of grain with a low cost.SOLUTION: The present invention is directed to a grain drying apparatus that has a plurality of circulation type grain dryer disposed therein in parallel, each having a grain storing part in its upper part and a hot blast drying part having a hot blast generating device in its lower part and attached with a grain elevator. Each of main dryers is provided with a circulation type grain dryer having a hot blast drying unit with no hot blast generating device as a reserve dryer. Each main dryer is provided with an air path for use in supplying exhausted hot blast exhausted from the hot blast drying unit of each of the main dryers to a hot blast drying unit of each of the reserve dryers and with a conveyance path for use in bringing grain preliminarily dried by each of the reserve dryers to each of the main dryers. Thus, a plurality of grain dryer units are formed to make it possible to put grain in each of the main dryers and the reserve dryers and also to sufficiently dry grain preliminarily dried by each of the reserve dryers to each of the main dryers.SELECTED DRAWING: Figure 2

Description

The present invention relates to a grain drying facility in which a plurality of circulating grain dryers are arranged side by side, and a grain drying method in the grain drying facility.

Conventionally, in grain drying facilities such as country elevators and rice centers, a plurality of storage bottles are arranged side by side in order to handle the receipt of a large amount of grains (raw paddy rice, etc.) in a short period of time (see Patent Document 1).
The storage bin is also called a bin dryer, and stores grains while pre-drying by blowing hot air from below the bottom surface made of a porous wall.

When putting high-moisture grains immediately after harvesting into this type of storage bottle, it is necessary to secure a predetermined air volume so that the grains do not deteriorate, and there are restrictions on the height of grain deposits. For example, in the case of raw paddy with a water content of 26% or more, the deposit height is up to 1 m (about 10 tons).
Therefore, it was necessary to install many storage bins, which led to an increase in the construction cost of the grain drying facility.

On the other hand, in this type of grain drying facility, in order to dry a large amount of grains, a grain drying facility is provided in which a plurality of circulating grain dryers are installed side by side (see Patent Document 2).
However, if a large number of dryers are installed according to the amount of cargo received during the harvest season, there is a problem that the installation cost and the fuel cost are high and the cost is high.

Japanese Unexamined Patent Publication No. 2001-128540 Jikkai Sho 51-155867

In view of the above problems, it is an object of the present invention to provide a grain drying facility capable of receiving a large amount of grains and drying a large amount of grains at low cost, and a grain drying method in the grain drying facility.

In order to achieve the above object, the present invention
It is a grain drying facility equipped with a grain storage section at the top and a hot air drying section with a hot air generator at the bottom, and a plurality of circulating grain dryers equipped with a grain raising machine are installed side by side.
The circulation type grain dryer is used as a main dryer, and each main dryer has a grain storage section at the upper part and a hot air drying section at the lower part which does not have a hot air generator, and a grain frying machine is attached to the circulation type grain. While each dryer is provided as a pre-dryer, an air passage for supplying exhaust hot air discharged from the hot air drying section of each main dryer to the hot air drying section of each pre-dryer is provided, and each pre-dryer is provided. A plurality of grain drying units are configured by providing a transport path for feeding the pre-dried grains in the above-mentioned main dryers.
While the grain can be charged into the main dryer and the pre-dryer, each grain drying unit is pre-dried by the exhaust hot air supplied through the air passage in the pre-dryer. It is characterized in that the grain is put into each of the main dryers to enable main drying.

The present invention
After the grains are sequentially loaded into each of the main dryers, the grains can be further loaded into each of the pre-dryers, while the grains pre-dried by the pre-dryers are used for each of the main dryers for each grain drying unit. It is preferable to put it in a dryer so that it can be dried.

Here, in the present invention, the present drying means, for example, finishing and drying the grain to a water state (for example, 14% to 16%) that can be distributed, and in that case, the pre-drying means, for example, the water state of the raw grain. It means that the grain is semi-dried to a moisture state (for example, about 17-18%) that does not deteriorate the grain, which is between (for example, about 20% or more) and the circable moisture state.

Further, in the present invention, the present drying means, for example, semi-drying to a moisture state (for example, about 17%) in which the grain does not deteriorate, and in that case, the pre-drying means, for example, the moisture state of the raw grain (for example, about 24%). %) And the moisture state in which the grain does not deteriorate (for example, about 21%) is half-dried.

The present invention
The hot air drying section of each pre-dryer is provided on the side of the hot air chamber to which the exhaust hot air discharged from the hot air drying section of each main dryer is supplied, and flows in from the hot air chamber. A drying chamber that dries the grains flowing down from the grain storage portion by the exhaust hot air, and a drying chamber that is provided on the side of the drying chamber and communicates with the exhaust fan to dry the grains in the drying chamber. Has an exhaust chamber, which exhausts the exhaust hot air,
A damper for opening and closing an exhaust port communicating with the exhaust fan is provided at the end of the hot air chamber.
When the damper is closed, the exhaust hot air can be ventilated from the hot air chamber to the drying chamber, and when the damper is opened, the exhaust hot air can be exhausted to the outside of the machine from the exhaust port of the hot air chamber. Is preferable.

The present invention
The hot air drying section of each pre-dryer is provided on the side of the hot air chamber via a hot air chamber to which exhaust hot air discharged from the hot air drying section of each main dryer is supplied and a partition having air permeability. A drying chamber that dries the grains flowing down from the grain reservoir by the exhaust hot air flowing from the hot air chamber, and a drying chamber further sideways of the drying chamber via a breathable partition wall. It is preferable to have an exhaust air chamber that communicates with a fan and exhausts the exhaust hot air after the grains are dried in the drying chamber, and the drying chamber is preferably a screen-type drying chamber.

The present invention
The hot air drying section of each pre-dryer is provided with a hot air chamber to which exhaust hot air discharged from the hot air drying section of each main dryer is supplied, and the hot air chamber of the hot air chamber via a plurality of non-perforated plates arranged in an inclined manner. A drying chamber provided on the side and slanted to dry the grains flowing down from the grain storage portion by the exhaust hot air flowing from the hot air chamber through the opening formed between the non-perforated plates. The grains are dried in the drying chamber through an opening formed between the non-perforated plates, which is provided further to the side of the drying chamber through a plurality of non-perforated plates and communicates with the exhaust fan. It is preferable to have an exhaust air chamber for exhausting the exhaust hot air after the drying, and the drying chamber is preferably a baffle type drying chamber.

The present invention
It is preferable to install a dust remover in the air passage for supplying the exhaust hot air discharged from the hot air drying section of each main dryer to the hot air drying section of each preliminary dryer.

In addition, in order to achieve the above object, the present invention
It is a grain drying method in a grain drying facility that has a grain storage section at the top and a hot air drying section with a hot air generator at the bottom, and a plurality of circulating grain dryers equipped with a grain raising machine are installed side by side.
The circulation type grain dryer is used as a main dryer, and each main dryer has a grain storage section at the upper part and a hot air drying section at the lower part which does not have a hot air generator, and a grain frying machine is attached to the circulation type grain. While each dryer is provided as a pre-dryer, an air passage for supplying exhaust hot air discharged from the hot air drying section of each main dryer to the hot air drying section of each pre-dryer is provided, and each pre-dryer is provided. A plurality of grain drying units are configured by providing a transport path for feeding the pre-dried grains in the above-mentioned main dryers.
At the start of grain operation, grains are sequentially packed into each of the main dryers, drying is started sequentially from the main dryers that have been filled, and after the grains are filled in all of the main dryers, further filling is performed. If there is grain to be used, the grain is sequentially charged into each of the pre-dryers, and the pre-dryer that has completed the filling is sequentially started to dry by the exhaust hot air supplied from the pre-dryer through the air passage. ,
After the grains that have been main-dried by each of the main dryers are sequentially carried out, the grains that have been pre-dried by each of the pre-dryers are transferred to each of the main dryers via the transport path for each grain drying unit. It is characterized in that it is sequentially added and the main drying is performed.

The present invention
The hot air drying section of each pre-dryer is provided on the side of the hot air chamber to which the exhaust hot air discharged from the hot air drying section of each main dryer is supplied, and flows in from the hot air chamber. A drying chamber that dries the grains flowing down from the grain storage portion by the exhaust hot air, and a drying chamber that is provided on the side of the drying chamber and communicates with the exhaust fan to dry the grains in the drying chamber. Has an exhaust chamber, which exhausts the exhaust hot air,
A damper for opening and closing an exhaust port communicating with the exhaust fan is provided at the end of the hot air chamber.
When the grain is pre-dried by the pre-dryer, the damper is closed and the exhaust hot air is passed from the hot air chamber to the drying chamber to perform the pre-drying, and when the grain is not pre-dried by the pre-dryer, the grain is pre-dried. It is preferable to open the damper and exhaust the exhaust hot air from the exhaust port of the hot air chamber.

Since the grain drying equipment of the present invention allows grains to be loaded into each main dryer and each pre-dryer, it is possible to handle the receipt of a large amount of grains without installing many storage bins.
Further, in the grain drying equipment of the present invention, for each grain drying unit, the grains pre-dried by the pre-dryers by the exhaust hot air supplied through the air passage are brought into each of the pre-dried units via the transport path. Since the main dryer can be used for main drying, the number of dryers equipped with a hot air generator can be reduced as compared with the conventional one, and the installation cost and the fuel cost can be significantly reduced as compared with the conventional one.
Therefore, according to the grain drying equipment of the present invention, it is possible to simultaneously receive a large amount of grain and dry a large amount of grain at low cost.

In the grain drying equipment of the present invention, a damper for opening and closing an exhaust port communicating with an exhaust fan is provided at the end of the hot air chamber in the hot air drying portion of the pre-dryer, and when the damper is closed, the hot air chamber is used. If the exhaust hot air can be ventilated to the drying chamber and the exhaust hot air can be exhausted to the outside of the machine from the exhaust port of the hot air chamber when the damper is opened, the grain can be switched by switching the damper. Depending on whether the drying unit is operated only by the main dryer or the main dryer and the pre-dryer are operated together, the drying unit can be operated with an appropriate air volume in consideration of pressure loss.

In the grain drying equipment of the present invention, if the drying chamber in the hot air drying section of the pre-dryer is a baffle type drying chamber, the hot air drying section of the pre-dryer is caused by dust and the like contained in the exhaust hot air supplied from the main dryer. Does not clog.

In the grain drying equipment of the present invention, if the dust remover is provided in the air passage for supplying the exhaust hot air discharged from the hot air drying section of each main dryer to the hot air drying section of each pre-dryer. It is possible to prevent clogging of the hot air drying portion (particularly the partition wall) in the pre-dryer due to dust and the like contained in the exhaust hot air supplied from the main dryer.

In the grain drying method in the grain drying equipment of the present invention, when the grain operation is started, the grains are sequentially squeezed into each main dryer, and the drying is started sequentially from the main dryers for which the squeezing is completed, and all of the above-mentioned main dryers. If there is grain to be further stuffed after the grain is stuffed into the squeeze, the grain is sequentially squeezed into each pre-dryer and supplied from the pre-dryer that has been stuffed through the air passage. Since drying is sequentially started by the exhaust hot air of the main dryer, it is possible to handle the receipt of a large amount of grain without installing many storage bins.
Further, in the grain drying method in the grain drying facility of the present invention, the grains that have been main-dried are sequentially carried out by each of the main dryers, and then the exhaust is supplied to each grain drying unit via the air passage. Since the grains pre-dried by each pre-dryer by hot air are sequentially put into each main dryer via the transport path to perform main drying, the number of dryers having a hot air generator is larger than before. It can be reduced, and the installation cost and fuel cost can be significantly reduced compared to the conventional method.
Therefore, according to the grain drying method in the grain drying equipment of the present invention, it is possible to simultaneously realize the receipt of a large amount of grains and the drying process of a large amount of grains at low cost.

In the grain drying method in the grain drying facility of the present invention, a damper for opening and closing an exhaust port communicating with the exhaust fan is provided at the end of the hot air chamber, and when the pre-dryer pre-drys the grains, the above-mentioned When the damper is closed and the exhaust hot air is passed from the hot air chamber to the drying chamber to perform pre-drying, and the grain is not pre-dried by the pre-dryer, the damper is opened and the exhaust port of the hot air chamber is used. If the exhaust hot air is to be exhausted to the outside of the machine, the grain drying unit may be operated only by the main dryer or the main dryer and the pre-dryer may be operated together by switching the damper. Therefore, the grain can be dried by operating with an appropriate air volume considering the pressure loss.

It is a schematic front sectional view of the circulation type grain dryer. It is a schematic plan sectional view in the hot air drying part of a grain drying unit. It is a schematic plan sectional view in the hot air drying part of a grain drying unit. It is a time chart of an embodiment.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic front sectional view of a circulating grain dryer.
The grain drying equipment according to the embodiment of the present invention includes a plurality of circulating grain dryers 1 arranged side by side.
The circulation type grain dryer 1 has a grain storage section 2 in the upper part and a hot air drying section 3 in the lower part, and a hot air chamber 4 is formed in the central portion in the hot air drying section 3 in the front-rear direction. A pair of exhaust chambers 5 are provided on both sides of the chamber 4 with the hot air chamber 4 interposed therebetween, and a pair of drying units is provided between the hot air chamber 4 and the exhaust chamber 5 and the upper portion thereof is connected to the grain storage unit 2. The chamber 6 is formed.

The front end surface of the hot air chamber 4 is connected to a burner (not shown) as a hot air generator, and the hot air generated by the burner is supplied into the hot air chamber 4.
The drying chamber 6 is a so-called screen-type drying chamber, in which the partition wall between the hot air chamber 4 and the exhaust air chamber 5 is formed by a porous wall having air permeability, and the hot air in the hot air chamber 4 is the partition wall. After flowing into the drying chamber 6 through the drying chamber 6 and drying the grains in the drying chamber 6, it flows out into the exhaust chamber 5 through the partition wall and is described later as an exhaust fan (not shown). ) To be blown out of the aircraft.

A burner box (not shown) containing the burner is arranged on the front wall of the hot air drying portion 3, while a pair of exhausts on the rear end surface of the exhaust chamber 5 is provided on the back wall of the hot air drying portion 3. An exhaust box 17 is provided so as to cover the air vent 14, and an exhaust fan (not shown) is attached to the exhaust box 17 directly or via a duct or the like.

On the front side of the hot air drying unit 3, a grain raising machine 9 is erected close to one side of the burner box. The grain raising machine 9 lifts grains that have passed through the drying chamber 6 and are discharged to the outside of the machine and circulates them in the grain storage unit 2.
A rotary valve 11 that is intermittently driven to allow the grains in the drying chamber 6 to flow down is laterally provided at the lower end of the drying chamber 6, and the grains falling from the rotary valve 11 are installed at the bottom of the hot air drying portion 3. A grain collecting hopper 12 for receiving is provided, and a lower screw conveyor 13 is horizontally installed in the central portion of the grain collecting hopper 12. A connecting gutter 10 for connecting the lower screw conveyor 13 is provided between the transport end portion of the lower screw conveyor 13 and the supply port of the grain raising machine 9.

A motor 9a for driving the grain raising machine 9 is provided on the upper part of the grain raising machine 9, and the discharge portion thereof is connected to an upper screw conveyor 19 horizontally provided on the top plate portion of the grain storage portion 2. Ru. A rotary dispersion board 16 for evenly charging grains into the grain storage section 2 is rotatably installed at the transport end portion of the upper screw conveyor 19.

2 and 3 show a schematic plan sectional view of the hot air drying portion of the grain drying unit as viewed from the side.
In the grain drying equipment according to the embodiment of the present invention, the circulating grain dryer 1 shown in FIG. 1 is used as the main dryer 21, and the circulating grain dryer without a burner is used as a pair for a plurality of main dryers 21. A plurality of grain drying units 41 are configured by arranging them in close proximity to each other as the pre-dryer 31.

The pre-dryer 31 has a grain storage section in the upper part and a hot air drying section 33 having no burner in the lower part, and a hot air chamber 34 is formed in the central portion in the hot air drying section 33 in the front-rear direction. A pair of exhaust chambers 35 are provided on both sides of the hot air chamber 34 with the hot air chamber 34 interposed therebetween, and a pair of drying units whose upper portion is connected to the grain storage portion between the hot air chamber 34 and the exhaust chamber 35. It forms a chamber 36.

In the grain drying unit 41, the exhaust box 17 of the main dryer 21 is connected to the hot air chamber 34 of the hot air drying unit 33 of the pre-dryer 31 by a hot air duct 42, and the exhaust box of the pre-dryer 31 is connected. An exhaust fan 44 is attached to the 37 through the hot air duct 43.
Further, in the grain drying unit 41, an exhaust port 38 communicating with the exhaust box 37 (exhaust fan 44) is opened at the end of the hot air chamber 34 in the preliminary dryer 31, and the exhaust port 38 is opened. A damper 39 is provided to open and close the door.

In the grain drying unit 41, by closing the damper 39 in the pre-dryer 31, the exhaust hot air supplied from the main dryer 21 to the pre-dryer 31 via the hot air duct 42 is shown in FIG. As shown, the static pressure in the hot air chamber 34 allows the hot air chamber 34 to ventilate the drying chamber 36 to pre-dry the grains.
Further, in the grain drying unit 41, when the damper 39 is opened in the pre-dryer 31, the exhaust hot air supplied from the main dryer 21 to the pre-dryer 31 via the hot air duct 42 is shown in the figure. As shown in 3, the air is exhausted to the outside of the machine through the hot air chamber 34.

Since the grain drying unit 41 can switch the air passage of the exhaust hot air supplied from the main dryer 21 in the pre-dryer 31 by opening and closing the damper 39, the grain drying unit can be used as the main dryer. It is possible to operate with an appropriate air volume in consideration of pressure loss depending on whether the main dryer and the pre-dryer are operated together.

On the other hand, in the grain drying unit 41, between the pre-dryer 31 and the main dryer 21, the grain pre-dried by the exhaust hot air from the main dryer 21 in the pre-dryer 31 is the main. A transport path (not shown) for feeding into the dryer 21 is provided.
The grain drying unit 41 can carry out the main drying by putting the grain pre-dried by each of the pre-dryers 31 into each of the main dryers 31 via the transport path.

Here, in the embodiment of the present invention, the present drying means, for example, finishing and drying the grain to a moist state (for example, 14% to 16%) in which the grain can be distributed, and in that case, the pre-drying means, for example, raw. It means that the grain is semi-dried to a moisture state (for example, about 17 to 18%), which is between the moisture state of the grain (for example, about 20% or more) and the moisture state that can be distributed, and the grain does not deteriorate.

Further, in the embodiment of the present invention, the present drying means, for example, semi-drying to a moisture state (for example, about 17%) in which the grain does not deteriorate, and in that case, the pre-drying means, for example, the moisture state of the raw grain. It means that the grain is half-dried to an intermediate moisture state (for example, about 21%) between (for example, about 24%) and the moisture state in which the grain does not deteriorate.

Since the grain drying equipment according to the embodiment of the present invention is provided with the plurality of grain drying units 41, the grains can be packed into each of the plurality of main dryers 21 and the plurality of pre-dryers 31. It is possible to handle the receipt of a large amount of grain without installing a storage bin.
Further, in the grain drying equipment according to the embodiment of the present invention, after the grains that have been finally dried by the main dryer 21 are discharged to the outside of the machine, the grain drying unit 41 is supplied to each of the grain drying units 41 via the hot air duct 42. Since the grain pre-dried by the pre-dryer 31 by the exhaust hot air can be put into each main dryer 31 via the transport path to perform the main drying, the circulating grain having a burner can be used. The number of dryers can be reduced compared to the conventional one, and the installation cost and fuel cost can be significantly reduced compared to the conventional one.
Therefore, according to the grain drying equipment according to the embodiment of the present invention, it is possible to simultaneously receive a large amount of grain and dry a large amount of grain at low cost.

In the embodiment of the present invention, the drying chamber 36 in the preliminary dryer 31 may be a baffle type drying chamber.
The hot air drying unit 33 of each pre-dryer 31 is provided via a hot air chamber 34 to which exhaust hot air discharged from the hot air drying unit 3 of each main dryer 21 is supplied, and a plurality of non-perforated plates arranged in an inclined manner. The exhaust hot air flowing from the hot air chamber 34 through the opening formed between the non-perforated plates is provided on the side of the hot air chamber 34 to dry the grains flowing down from the grain storage portion. A drying chamber 36 is provided further to the side of the drying chamber 36 via a plurality of non-perforated plates arranged in an inclined manner, and communicates with the exhaust fan 44 via an opening formed between the non-perforated plates. If the drying chamber 36 has an exhaust air chamber 35 for exhausting the exhaust hot air obtained by drying the grains, the preliminary dryer is provided with dust or the like contained in the exhaust hot air supplied from the main dryer 21. The hot air drying portion 33 in 31 is not clogged.

Further, in the embodiment of the present invention, a dust removing device can be provided in the hot air duct 42.
If a dust removing device is provided in the hot air duct 42 that supplies the exhaust hot air discharged from the hot air drying unit 3 of each main dryer 21 to the hot air drying unit 33 of each preliminary dryer 31, the main dryer It is possible to prevent clogging of the hot air drying unit 33 (in the case of a screen-type drying chamber, a porous wall having air permeability) in the preliminary dryer 31 due to dust or the like contained in the exhaust hot air supplied from 21.

The grain drying unit 41 is configured by arranging the main dryer 21 and the pre-dryer 31 in close proximity to each other, but the main dryer 21 and the pre-dryer 31 are separated by a partition wall. It may be configured.

Further, the main dryer 21 and the pre-dryer 31 are provided with a hot air duct 42 for supplying the exhaust hot air discharged from the hot air drying unit 3 of the main dryer 21 to the hot air drying unit 33 of the pre-dryer 31. At the same time, the grain drying unit 41 may be configured by providing a transport path for feeding the grains pre-dried by the pre-dryer 31 into the main dryer 21, and the grain drying unit 41 may be the main dryer. The 21 and the pre-dryer 31 do not necessarily have to be arranged in close proximity to each other.

<Example>
FIG. 4 shows a grain drying facility equipped with four grain drying units, in which a daily load of 240 tons of raw paddy is transferred from about 24% to about 17% moisture (semi-dry). An example of a time chart in the case of drying up to is shown.
In this embodiment, the received raw paddy is sequentially loaded into four main dryers having a dryer capacity of 30 tons, that is, from the Unit 1 main dryer to the Unit 4 main dryer for 1 hour each, and the filling is completed1. Drying is started sequentially from the unit main dryer. Then, in each of the main dryers, the hot air temperature is controlled so that the drying reduction rate is about 0.6%, and the main drying is performed. The water value decreases in about 11 hours until the state (semi-dry state) is reached.

On the other hand, after filling all of the main dryers with raw paddy, the remaining raw paddy is put into four pre-dryers with a dryer capacity of 30 tons, that is, from the Unit 1 pre-dryer to the Unit 4 pre-dryer for 1 hour each. The drying is started sequentially from the Unit 1 pre-dryer, which has been squeezed in sequence. At that time, in each of the pre-dryers, pre-drying is performed by the exhaust hot air from the main dryer 21 until the main drying is completed in each of the main dryers, and the raw paddy has a moisture content of about 24%. It takes about 7 hours from the state to the water state of about 21% (half-dry state), and the water value decreases.

After the semi-dried paddy that has been fully dried by each of the main dryers is sequentially discharged to the outside of the machine, the semi-dried paddy (half-dried paddy) that has been pre-dried by each of the pre-dryers for each grain drying unit. ) Is sequentially charged into each of the main dryers via a transport path provided between the pre-dryer and the main dryer to perform the main drying. Then, in each of the main dryers, the moisture value of the half-dried paddy decreases from about 21% moisture state to about 17% moisture state (half-dry state) over about 7 hours.

According to this embodiment, the grain drying facility is equipped with four grain drying units, and can load 240 tons of raw paddy per day into four main dryers and four pre-dryers. Therefore, it can be seen that it is possible to handle a large amount of raw paddy without installing many storage bins.
Further, according to this embodiment, after the semi-dried paddy that has been main-dried by the four main dryers is discharged to the outside of the machine, pre-drying is performed by four pre-dryers for each of the four grain drying units. Since the half-dried paddy can be put into each of the main dryers for main drying, the number of circulating grain dryers with burners can be reduced compared to the conventional method, and the installation cost and fuel cost can be reduced. It can be seen that it can be significantly reduced compared to.
Therefore, according to this embodiment, it can be confirmed that a large amount of raw paddy can be received and a large amount of raw paddy can be dried at the same time at low cost.

In the above embodiment, a grain drying facility provided with four grain drying units is taken as an example, but the present invention is not limited to this, and the number of grain drying units can be arbitrarily set.

Further, in the above embodiment, the received raw paddy is sequentially loaded into four main dryers, and the main dryers that have completed the loading are sequentially started to be dried to perform the main drying, and all of the main dryers are subjected to the main drying. After filling the raw paddy, the remaining raw paddy is sequentially packed in four pre-dryers, and the pre-dryers that have completed the filling are sequentially started to dry and the pre-drying is performed, and each of the main dryers is described. After the semi-dried paddy that has been completely dried in the above is sequentially discharged to the outside of the machine, the half-dried paddy that has been pre-dried by each of the pre-dryers is sequentially put into each of the main dryers for each grain drying unit. The example is a grain drying method for drying, but the present invention is not limited to this, and the grain drying method in the grain drying equipment according to the embodiment of the present invention can be appropriately changed.

In the above embodiment, the case where the raw paddy is used as a raw material for the drying treatment is taken as an example, but the dried paddy can also be used as the raw material for the drying treatment.

In the above embodiment, paddy is used as a raw material, but other grains such as wheat can also be used as a raw material for drying treatment.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and the configuration thereof can be appropriately changed as long as it does not deviate from the scope of the invention.

The grain drying equipment of the present invention and the grain drying method in the grain drying equipment can simultaneously realize the receipt of a large amount of grains and the drying process of a large amount of grains at low cost, and are extremely useful.

1 Circulation type grain dryer 2 Grain storage section 3 Hot air drying section 4 Hot air chamber 5 Blower chamber 6 Drying chamber 8 Burner 9 Grain lifter 9a Motor 10 Connection trough 11 Rotary valve 12 Grain collection hopper 13 Lower screw conveyor 14 Blower port 16 Rotating Disperser 17 Blower Box 19 Upper Screw Conveyor 21 Main Dryer 31 Pre-Dryer 33 Hot Air Drying Unit 34 Hot Air Room 35 Blow Room 36 Drying Room 37 Blow Box 38 Blow Out Port 39 Damper 41 Grain Drying Unit 42 Hot Air Duct 43 Hot air duct 44 exhaust fan

Claims (7)

It is a grain drying facility equipped with a grain storage section at the top and a hot air drying section with a hot air generator at the bottom, and a plurality of circulating grain dryers equipped with a grain raising machine are installed side by side.
The circulation type grain dryer is used as a main dryer, and each main dryer has a grain storage section at the upper part and a hot air drying section at the lower part which does not have a hot air generator, and a grain frying machine is attached to the circulation type grain. While each dryer is provided as a pre-dryer, an air passage for supplying exhaust hot air discharged from the hot air drying section of each main dryer to the hot air drying section of each pre-dryer is provided, and each pre-dryer is provided. A plurality of grain drying units are configured by providing a transport path for feeding the pre-dried grains in the above-mentioned main dryers.
While the grain can be charged into each of the main dryers and the pre-dryers, each grain drying unit is pre-dried by the exhaust heat air supplied through the air passage in each of the pre-dryers. A grain drying facility characterized in that the grain is put into each of the main dryers to enable main drying. The hot air drying section of each pre-dryer is provided on the side of the hot air chamber to which the exhaust hot air discharged from the hot air drying section of each main dryer is supplied, and flows in from the hot air chamber. A drying chamber that dries the grains flowing down from the grain storage portion by the exhaust hot air, and a drying chamber that is provided on the side of the drying chamber and communicates with the exhaust fan to dry the grains in the drying chamber. Has an exhaust chamber, which exhausts the exhaust hot air,
A damper for opening and closing an exhaust port communicating with the exhaust fan is provided at the end of the hot air chamber.
A claim that when the damper is closed, the exhaust hot air can be ventilated from the hot air chamber to the drying chamber, and when the damper is opened, the exhaust hot air can be exhausted from the exhaust port of the hot air chamber. Item 1 The grain drying equipment. The hot air drying section of each pre-dryer is provided on the side of the hot air chamber via a hot air chamber to which exhaust hot air discharged from the hot air drying section of each main dryer is supplied and a partition having air permeability. A drying chamber that dries the grains flowing down from the grain reservoir by the exhaust hot air flowing from the hot air chamber, and a drying chamber further sideways of the drying chamber via a breathable partition wall. The grain drying facility according to claim 2, further comprising an exhaust air chamber that communicates with a fan and exhausts the exhaust hot air after the grains are dried in the drying chamber. The hot air drying section of each pre-dryer is a hot air chamber to which exhaust hot air discharged from the hot air drying section of each main dryer is supplied, and the hot air chamber of the hot air chamber via a plurality of non-perforated plates arranged in an inclined manner. A drying chamber provided on the side and slanted to dry the grains flowing down from the grain storage portion by the exhaust hot air flowing from the hot air chamber through the opening formed between the non-perforated plates. The grain is dried in the drying chamber through an opening formed between the non-perforated plates, which is provided further to the side of the drying chamber through a plurality of non-perforated plates and communicates with the exhaust fan. The grain drying facility according to claim 2, further comprising an exhaust chamber for exhausting the exhaust hot air after the operation. The grain according to any one of claims 1 to 4, wherein a dust remover is provided in the air passage for supplying the exhaust hot air discharged from the hot air drying section of each main dryer to the hot air drying section of each preliminary dryer. Drying equipment. It is a grain drying method in a grain drying facility that has a grain storage section at the top and a hot air drying section with a hot air generator at the bottom, and a plurality of circulating grain dryers equipped with a grain raising machine are installed side by side.
The circulation type grain dryer is used as a main dryer, and each main dryer has a grain storage section at the upper part and a hot air drying section at the lower part which does not have a hot air generator, and a grain frying machine is attached to the circulation type grain. While each dryer is provided as a pre-dryer, an air passage for supplying exhaust hot air discharged from the hot air drying section of each main dryer to the hot air drying section of each pre-dryer is provided, and each pre-dryer is provided. A plurality of grain drying units are configured by providing a transport path for feeding the pre-dried grains in the above-mentioned main dryers.
At the start of grain operation, grains are sequentially packed into each of the main dryers, drying is started sequentially from the main dryers that have been filled, and after the grains are filled in all of the main dryers, further filling is performed. If there is grain to be used, the grain is sequentially charged into each of the pre-dryers, and the pre-dryer that has completed the filling is sequentially started to dry by the exhaust hot air supplied from the pre-dryer through the air passage. ,
After the grains that have been main-dried by each of the main dryers are sequentially carried out, the grains that have been pre-dried by each of the pre-dryers are transferred to each of the main dryers via the transport path for each grain drying unit. A grain drying method in a grain drying facility, characterized in that the grains are sequentially added and the main drying is performed. The hot air drying section of each pre-dryer is provided on the side of the hot air chamber to which the exhaust hot air discharged from the hot air drying section of each main dryer is supplied, and flows in from the hot air chamber. A drying chamber that dries the grains flowing down from the grain storage portion by the exhaust hot air, and a drying chamber that is provided on the side of the drying chamber and communicates with the exhaust fan to dry the grains in the drying chamber. Has an exhaust chamber, which exhausts the exhaust hot air,
A damper for opening and closing an exhaust port communicating with the exhaust fan is provided at the end of the hot air chamber.
When the grain is pre-dried by the pre-dryer, the damper is closed and the exhaust hot air is passed from the hot air chamber to the drying chamber to perform the pre-drying, and when the grain is not pre-dried by the pre-dryer, the grain is pre-dried. The grain drying method in the grain drying facility according to claim 6, wherein the damper is opened and the exhaust hot air is exhausted from the exhaust port of the hot air chamber.

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