JP7196401B2 - How to use the circulating grain dryer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method of using a circulation grain dryer that enables efficient use of the circulation grain dryer.

Conventionally, it is well known that grains such as rice and wheat are dried using a circulating grain dryer (see Patent Documents 1 to 3).
The circulating grain dryer, as described in Patent Document 1, includes a dryer body having a storage section at the top and a drying section at the bottom of the storage section, and a grain hoisting machine attached to the dryer body. The grain fed into the dryer main body from above is passed from the storage section to the drying section and discharged from the lower side of the dryer main body, and the discharged grain is fried by the grain lifting machine. By returning the grains to the upper part of the dryer main body, the grains are dried while being circulated.

By the way, in grain drying preparation facilities such as country elevators and rice centers, as described in Patent Documents 2 and 3, a plurality of circulating grain dryers are installed to dry grains. For example, if the amount of goods received on the day is large, it is necessary to operate each dryer multiple times, which may affect the amount of goods that can be received the next day. Therefore, it is important to use each dryer as efficiently as possible. Become.

Also, even in a facility that dries grain with a single circulation grain dryer, if the amount of grain received on the day exceeds the capacity of the dryer itself, it is necessary to operate the dryer twice or more, and the grain can be received the next day. It is important to use the dryer as efficiently as possible, as this can affect the volume.

JP 2006-308244 A Japanese Utility Model Laid-Open No. 51-155867 Japanese Patent Publication No. 53-33498

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method of using a circulation grain dryer that enables efficient use of the circulation grain dryer.

In order to achieve the above object, the present invention
A dryer body having a storage section in the upper part and a drying section in the lower part of the storage section; The grains are passed through the drying unit and discharged from the lower part of the dryer body, and the discharged grains are fried by the grain hoisting machine and returned to the upper part of the dryer body, thereby drying the grains while circulating them. A circulating grain dryer that allows
In a method of using a circulating grain dryer in a facility in which a plurality of the circulating grain dryers are installed,
When the amount of grains to be dried exceeds the total capacity of each dryer body in the plurality of circulation grain dryers, the grains to be dried are sequentially put into each dryer body and dried while being circulated. On the other hand, after the grains to be dried are put into all the dryer main bodies, the grains after drying are tempered without being directly transferred to other circulation grain dryers in a progressive manner. At the same time, the remaining grains to be dried are sequentially fed into the respective dryer bodies from above as grains to be newly dried while the grains after drying are discharged from below the respective dryer bodies. .

The present invention
The grain to be dried is grain in a first moisture state,
When the amount of grain in the first moisture state exceeds the total capacity of each dryer main body in the plurality of circulating grain dryers, the grain after drying the grain in the first moisture state is dried. 2. Discharged out of the machine as grains in a moisture state,
When the amount of grain in the first moisture state does not exceed the total capacity of each dryer main body in the plurality of circulating grain dryers, the grain after drying the grain in the first moisture state is The grains are discharged out of the machine as grains in a third moisture state having a moisture content lower than that in the second moisture state.

The present invention
When the amount of grain in the first moisture state exceeds the total capacity of each dryer main body in the plurality of circulating grain dryers , and all of the grain in the first moisture state is After being thrown into the main body, when the grain in the second moisture state is discharged out of the machine as the grain in the second moisture state after drying the grain in the first moisture state, the grain in the second moisture state is discharged from the main bodies of the dryers. While discharging, at the same time, the grain in the second moisture state discharged to the outside of the machine is sequentially fed into the main bodies of the dryers as the grain to be newly dried, and the grain in the second moisture state is dried. Preferably, the grain is discharged overboard as grain in a third moisture state.

The present invention
When there is no grain in the second moisture state to be discharged out of the machine and there is grain in the second moisture state discharged out of the machine earlier, the grain in the second moisture state is dried. When discharging the grains in the third moisture state to the outside of the machine, the grains in the third moisture state are discharged from the main bodies of the dryers, and at the same time, the remaining grains in the second moisture state are renewed. It is preferable that the grains to be dried in the second moisture state are sequentially fed into the main body of the dryer, and the remaining grains in the second moisture state are discharged out of the machine as the grains in the third moisture state after drying.

The present invention
Preferably, the grain in the first moisture state is raw grain, the grain in the second moisture state is semi-dry grain, and the grain in the third moisture state is semi-dry grain, and the grain in the second moisture state is discharged out of the machine. At the time of discharge, it is preferable to discharge grains out of the machine while drying each circulating grain dryer in a hot air drying operation.
In the present invention, semi-dried grains refer to grains whose moisture content is intermediate between the moisture content of fresh grains and that of semi-dried grains.

In addition, the present invention
Preferably, the grain in the first moisture state is raw grain, the grain in the second moisture state is semi-dry grain, and the grain in the third moisture state is semi-dry grain, and the grain in the third moisture state is discharged out of the machine. At the time of discharge, it is preferable to discharge to the outside while cooling each circulating grain dryer in a ventilation drying operation (ventilation operation).

In addition, in order to achieve the above object, the reference invention is
A dryer body having a storage section in the upper part and a drying section in the lower part of the storage section; The grains are passed through the drying unit and discharged from the lower part of the dryer body, and the discharged grains are fried by the grain hoisting machine and returned to the upper part of the dryer body, thereby drying the grains while circulating them. In the method of using the circulation type grain dryer,
When the amount of grains to be dried exceeds the capacity of the main body of the dryer, when discharging the grains after drying to the outside of the machine, while discharging the grains after drying from below the main body of the dryer, at the same time, the remaining Grains to be dried are introduced into the main body of the dryer from above as grains to be newly dried.

The present invention
When the dried grains are discharged from the bottom of the dryer body and at the same time, when the grains to be newly dried are put into the dryer body from above, moisture meters provided at a plurality of height positions in the dryer body Grasping the height position of each moisture layer of the discharged grain and the charged grain, and/or the discharged grain in the dryer main body based on the discharge amount of the grain discharged from the dryer main body It is preferable to detect the replacement state of grains in the dryer main body by grasping the remaining amount of grains.

In addition, the present invention
While discharging the dried grains from below the main body of the dryer, at the same time, the grains to be newly dried are introduced into the main body of the dryer from above. A weight having a specific gravity is put into the main body of the dryer from above, and the height position of the boundary between the grain to be discharged and the grain to be fed is grasped according to the height position of the weight, so that the grain in the main body of the dryer can be measured. It is preferable to detect a shunting situation.

According to the present invention, when the dried grains are discharged out of the machine, the dried grains are discharged from the lower side of the dryer main body, and at the same time, the grains to be newly dried are thrown into the dryer main body from above. The time required for exchanging the grains in the dryer body can be shortened to half as compared with the case where the grains to be newly dried are put into the dryer body after the dried grains are discharged from the dryer body.
Therefore, according to the method of using the circulation grain dryer of the present invention, the circulation grain dryer can be used efficiently.

The present invention provides a facility comprising a plurality of circulating grain dryers, wherein grains to be dried are grains in a first moisture state, and the amount of the grains in the first moisture state is If the total capacity of each dryer body in the circulatory grain dryer is exceeded, and the grain in the first moisture state is dried in two stages up to the grain in the third moisture state, circulatory grain drying It is possible to eliminate the variation in waiting time for each machine and improve the operation rate of the circulation type grain dryer as a whole facility.
Therefore, according to the method of using the circulation grain dryer of the present invention, it is possible to efficiently use the circulation grain dryer in a facility in which a plurality of circulation grain dryers are installed.

According to the present invention, when the grains in the second moisture state are discharged to the outside of the machine, each circulation type grain dryer is operated in a hot air drying operation to dry the grains while discharging the grains out of the machine. can be used to dry the grain to the second moisture state, thereby reducing drying time.
In addition, while the grains in the second moisture state are discharged from the dryer main body, the grains to be newly dried are fed into the dryer main body at the same time. Dryness can be expected.
Therefore, according to the method of using the circulation grain dryer of the present invention, it is possible to efficiently use the circulation grain dryer in a facility in which a plurality of circulation grain dryers are installed.

According to the present invention, when the grains in the third moisture state are discharged to the outside of the machine, each circulation type grain dryer is discharged to the outside of the machine while being cooled in the ventilation drying operation. can be used to lower the grain temperature of the grain to the same level as the outside air.
Therefore, according to the method of using the circulation grain dryer of the present invention, it is possible to efficiently use the circulation grain dryer in a facility in which a plurality of circulation grain dryers are installed.

The present invention is a method for providing water at a plurality of height positions inside the dryer body when the dried grains are discharged from the dryer body and at the same time, the grains to be newly dried are loaded into the dryer body from above. Grasp the height position of each moisture layer of the discharged grain and the input grain by means of a meter, and/or the discharge in the dryer main body based on the discharge amount of the grain discharged from the dryer main body By grasping the remaining amount of grains to be dried, it is possible to appropriately detect the completion of grain replacement in the dryer main body by detecting the state of replacement of grains in the main body of the dryer.

According to the present invention, when the grains to be newly dried are introduced into the main body of the dryer from above while the grains after drying are being discharged from the main body of the dryer, the grains to be newly dried are started to be introduced at the same time as the grains are discharged. A weight having approximately the same specific gravity is put into the dryer main body from above, and the height position of the boundary between the discharged grain and the fed grain is grasped from the height position of the weight, so that the inside of the dryer main body By detecting the replacement state of the grains, it is possible to appropriately detect the completion of the replacement of the grains in the dryer main body.

A schematic plan view of a country elevator. Schematic explanatory drawing of a country elevator. The time chart of Example 1. FIG. The time chart of Example 2. FIG. The time chart of Example 3. FIG.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic plan view of a country elevator. FIG. 2 shows a schematic illustration of a country elevator.
The country elevator shown in FIGS. 1 and 2 consists of a machine building 1 housing various equipment for receiving and processing grain, a drying building 2 housing a circulating grain dryer for drying grain, and a grain storage facility. It comprises a silo train 3 for

In the machine building 1, there are a receiving hopper 11 for receiving harvested grains such as raw rice, a rough sorting machine 12 for removing impurities from the grains, a scale 13 for weighing the rough sorted grains, and the like. be accommodated.

In the drying building 2, six circulating grain dryers 21 are installed side by side and stored. The circulating grain dryer 21 includes a dryer body having a storage section in the upper part and a drying section in the lower part of the storage section, and a grain raising machine attached to the dryer body. The fed grain is passed from the storage section to the drying section and discharged from below the dryer main body, and the discharged grain is lifted by the grain hoisting machine and returned to the upper part of the dryer main body. This is a well-known method for drying grains while circulating them.

In the silo row 3, ten main silos 31 are provided in two rows, and four gap silos 32 are provided in the space surrounded by the main silos.

In the country elevator, the raw grains received by the receiving hopper 11 are roughly selected by the coarse sorter 12, weighed by the scale 13, and then lifted by the grain lifter 41. 42 and a horizontal feed conveyor 52, the grains are successively fed from above into each dryer body of each circulation type grain dryer 21. As shown in FIG. At this time, if the raw grain exceeds the total capacity of each dryer main body, the remaining raw grain is put into the gap silo 32 or the main silo 31 via the horizontal conveyor 51 and the horizontal conveyor 53, and temporarily may be stored. Moreover, not limited to this, raw grains exceeding the total capacity of each dryer body may be temporarily stored in a receiving tank or a temporary storage bin (not shown) provided at the receiving process side.

After being dried in each circulation grain dryer 21, the grains reach the target moisture state and are sequentially discharged from the lower part of each dryer body. The grains are fed from the conveyor 54 to the gap silo 32 or the main silo 31 via the hoisting machine 43 and the transverse conveyor 53 and tempered.

In addition, when there is raw grain exceeding the total capacity of each dryer main body, for example, the raw grain put into the gap silo 32 or the main silo 31 and temporarily stored is As the grains after the drying treatment in 21 are discharged to the outside of each machine, they are discharged from the gap silo 32 or the lower part of the main silo 31, and are conveyed from the horizontal conveyor 55 to the horizontal conveyor 56 and the grain lifting machine 42. After that, the grains are successively introduced into the dryer bodies of the circulation type grain dryers 21 from above.

The grains after being dried in each of the circulation grain dryers 21 are discharged in order from the lower side of each dryer main body in the target moisture state, and after being discharged outside the respective dryers, the grains are conveyed by the horizontal feed conveyor 54. From there, the grains are put into the gap silo 32 or the main silo 31 via the grain hoist 43 and the transverse conveyor 53 and tempering is performed.

It should be noted that the grains having the target moisture content put into the gap silo 32 or main silo 31 and subjected to tempering are subjected to drying treatment again in the circulation type grain dryers 21 as necessary.

A method of using the circulating grain dryer according to the embodiment of the present invention will be described below.
Here, using a circulating grain dryer 21 with a dryer body capacity of 30 tons, raw rice with a moisture content of about 24% was dried at a drying rate (moisture reduction rate per hour) of 0.00%. An example is the case of obtaining semi-dried rice with a moisture content of about 17% by drying with hot air at 6%.
The time required to charge 30 tons of grain into the dryer main body (input time) and the time required to discharge 30 tons of grain from the dryer main body (discharging time) are both one hour. Assume there is.

<Example 1>
Fig. 3 shows that in a facility where six circulating grain dryers 21 are installed side by side, raw rice with a daily receiving amount of 210 tons exceeding the total capacity of each dryer body of 180 tons is processed from a moisture state of about 24%. An example of a time chart of a method of using a circulating grain dryer in the case of drying at once in one step to semi-dry rice with a moisture content of about 17% is shown.

In this embodiment, first, in the first round of feeding, 30 tons of raw rice are sequentially fed into each dryer main body from the first dryer to the sixth dryer.
In each dryer, after the raw rice is put into the main body of each dryer, the drying process is performed sequentially. % moisture level to about 17% moisture level over a period of about 12 hours.

After completion of the drying process in each dryer, the semi-dried paddy is sequentially discharged from the main body of each dryer from the first dryer to the sixth dryer, and discharged to the outside of each machine. Then, the semi-dried rice discharged to the outside of each machine is put into the gap silo 32 or the main silo 31 and tempered.

Next, after the raw rice is put into all the dryer bodies from the 1st dryer to the 6th dryer, 30 tons of raw rice remains, so the first dryer is operated twice, and the input 2 In the cycle, the remaining raw rice is put into the dryer body of the first dryer, dried, and the half-dried rice is discharged from the dryer body and discharged outside the machine. Dry paddy is put into the gap silo 32 or main silo 31 and tempered.

Here, in this embodiment, when the semi-dried rice whose moisture content has decreased to a moisture state of about 17% in the first cycle of input is discharged out of the first dryer, the semi-dried rice is discharged from the lower part of the dryer main body. While discharging, at the same time, the remaining raw rice is fed into the dryer main body from above as raw rice to be newly dried in the second feeding cycle.

According to this embodiment, after the half-dried paddy is discharged from the dryer main body in the first round of input, the remaining raw paddy is introduced into the dryer main body in the second round of input. The time it takes to change the paddy can be cut in half to one hour.
Therefore, according to the method of using the circulating grain dryer according to this embodiment, the circulating grain dryers can be used efficiently in a facility in which six circulating grain dryers are installed side by side.

In this embodiment, in both the first and second feeding cycles, when the semi-dried rice is discharged out of each machine, each dryer from the first dryer to the sixth dryer is subjected to ventilation drying operation ( It is preferable to discharge the semi-dried rice to the outside while cooling it as a blowing operation). In this ventilation drying operation (ventilation operation), when the outside air temperature is low, it may be possible to dry with a drying loss rate (moisture reduction rate per hour) of about 0.3%.

<Example 2>
Fig. 4 shows that in a facility where six circulating grain dryers 21 are installed side by side, raw rice with a daily receiving amount of 270 tons exceeding the total capacity of each dryer body of 180 tons is processed from a moisture state of about 24%. An example of a time chart of how to use the circulating grain dryer when the drying process is performed in two stages until semi-dry rice with a moisture content of about 17% is shown.

In this embodiment, as the first stage of drying, raw rice is dried from a first moisture state of about 24% to a second moisture state of about 21% (hereinafter referred to as "half-half dry rice"). As the second-stage drying, the half-dried paddy is dried from the second moisture state of about 21% to the semi-dried paddy with the third moisture content of about 17%.

In this embodiment, first, in the first round of feeding, 30 tons of raw rice are sequentially fed into each dryer main body from the first dryer to the sixth dryer.
In each dryer, after the raw paddy is put into each dryer body, the first drying process is sequentially performed, and the raw paddy is in a first moisture state of about 24% with a dry loss rate of 0.6%. to a second moisture state of about 21% over about 5 hours.

After the first-stage drying process is completed in each dryer, the half-dried rice is sequentially discharged from each dryer main body from the first dryer to the sixth dryer, and discharged to the outside of each machine. . Then, the half-dried paddy discharged out of each machine is put into the gap silo 32 or main silo 31 and tempered.

Next, after the raw rice is put into all the dryer bodies from the 1st dryer to the 6th dryer, 90 tons of raw rice will remain. Until the dryer, the remaining raw paddy is sequentially put into each dryer main body as raw paddy to be newly dried, and after performing the first drying process, the half-dried paddy is discharged from each dryer main body and The half-dried rice is discharged to the outside of the machine, and the half-dried rice is put into the gap silo 32 or the main silo 31 and tempered.

On the other hand, in the second round of input, after all the remaining raw rice is input into each dryer main body from the first dryer to the third dryer, the first stage from the fourth dryer to the sixth dryer Half-dried rice in a second moisture state of about 21% discharged from each dryer after the drying process is completed, and is half-dried after being put into the gap silo 32 or the main silo 31 and subjected to tempering. As new paddy to be dried, the paddy is put into each dryer main body in sequence.

In each dryer from the 4th dryer to the 6th dryer, after the half-dried paddy is put into each dryer main body, the second-stage drying process is sequentially performed, and the half-dried paddy has a drying loss rate of 0. At .6%, the moisture value decreases from a second moisture state of about 21% to a third moisture state of about 17% over about 7 hours.

After the second-stage drying process is completed in each of the fourth to sixth dryers, the semi-dried paddy is sequentially discharged from each dryer body of the fourth to sixth dryers. and discharge it to the outside of each machine. Then, the semi-dried paddy discharged out of each machine is put into the main silo 31 and stored.

After the half-dried paddy is put into each dryer body from the 4th dryer to the 6th dryer, it is necessary to dry another 180t of half-dried paddy. From the dryer to the sixth dryer, the half-dried paddy is sequentially put into each dryer body as paddy to be newly dried, and after the second stage drying process, the half-dried paddy is discharged from each dryer body. Then, the semi-dried rice is put into the silo 31 and stored.

Here, in this embodiment, the half-dried paddy whose moisture value has decreased to the second moisture state of about 21% after the first stage drying process is completed in the first cycle of input is dried in the first dryer to the third dryer. When discharging out of each dryer, while discharging the half-dried rice from the bottom of each dryer body, at the same time, the remaining raw rice is newly dried in the second round of feeding. Introduce in order from

Also, in the first round of input, the first drying process is completed, and the half-dried rice whose moisture value has decreased to the second moisture state of about 21% is discharged from the fourth dryer to the outside of the sixth dryer. At the same time, while the half-dried rice is discharged from the lower part of each dryer body, the half-dried rice that has been discharged out of the machine and subjected to tempering in the second cycle is newly dried as the rice. They are sequentially put into the dryer main body from above.

In this embodiment, the first drying process is completed in the second cycle of input, and the half-dried paddy whose moisture value has decreased to the second moisture state of about 21% is dried in each of the first to third dryers. When the half-dried rice is discharged to the outside, the half-dried rice is discharged from the lower part of each dryer main body, and at the same time, the half-dried rice that has been discharged to the outside and subjected to tempering in the third cycle of feeding is newly dried. As a result, it is sequentially introduced into each dryer main body from above.

In addition, in the second round of input, the second stage drying process is completed, and the semi-dried paddy whose moisture value has decreased to the third moisture state of about 17% is discharged from the fourth dryer to the outside of the sixth dryer. At the same time, while the half-dried paddy is discharged from below the main body of each dryer, the half-dried paddy that has been discharged out of the machine and subjected to tempering in the third cycle of input is used as the paddy to be newly dried. They are sequentially put into the dryer main body from above.

According to this embodiment, in a facility in which six circulating grain dryers are installed in parallel, when the amount of raw rice received per day exceeds the total capacity of each dryer body, the raw rice Since the paddy is dried in two stages up to half-dried paddy, it is possible to eliminate variations in the waiting time of each dryer and improve the operation rate of the circulating grain dryer as a whole facility, as shown in Fig. 4. does not affect the amount of goods received on the following day.

Also in this embodiment, since the dried paddy is discharged from the dryer main body and the newly dried paddy is introduced into the dryer main body at the same time, after the dried paddy is discharged from the dryer main body, Compared with the case where newly dried paddy is put into the dryer main body, the time required for replacing the paddy in the dryer main body can be shortened to one hour, which is half.
Therefore, according to the method of using the circulating grain dryer according to this embodiment, the circulating grain dryers can be used efficiently in a facility in which six circulating grain dryers are installed side by side.

Here, in the present embodiment, when the half-dried rice is discharged to the outside of each dryer after the first drying process is completed, each dryer is operated in a hot air drying operation and discharged to the outside while being dried. be able to. In this case, the paddy can be dried to the second moisture state by utilizing the time of discharge from each dryer main body, so the drying time can be shortened by about one hour.
In addition, while the half-dried paddy is discharged from the dryer main body, the newly dried paddy is put into the dryer main body at the same time, so it is expected that some of the newly dried paddy will be dried using the charging time. can.

In this embodiment, when the semi-dried rice is discharged out of each dryer after the second stage drying process is completed, the dryer is discharged to the outside while being cooled as a ventilation drying operation (air blowing operation). can do. In that case, the grain temperature of the semi-dried rice can be lowered to the same level as the outside air by utilizing the time of discharge from each dryer main body.

<Example 3>
Fig. 5 shows that in a facility where one circulating grain dryer 21 is installed, raw rice with a daily receiving amount of 60 tons, which exceeds the capacity of the dryer body of 30 tons, is changed from a moisture state of about 24% to about 17%. An example of a time chart of how to use a circulating grain dryer for drying up to semi-dried rice with a moisture content of 100% is shown.

In this embodiment, in the first round of feeding, after the raw rice is fed into the dryer main body of the dryer, the drying process is performed over about 12 hours. After the drying process in the dryer is completed, the semi-dried paddy with a moisture content of about 17% is discharged from the dryer body and discharged outside the machine, and the semi-dried paddy is transferred to the silo 31. Input and store.

Next, in the second round of input, the remaining raw rice is put into the dryer body of the dryer, dried, the semi-dried rice is discharged from the dryer body, and discharged outside the machine. , the semi-dried paddy is put into the main silo 31 and stored.

Here, also in this embodiment, when the semi-dried paddy whose moisture content has decreased to about 17% in the first round of input is discharged outside the machine, the semi-dried paddy is discharged from below the main body of the dryer. At the same time, in the second feeding round, the remaining raw rice is fed into the dryer main body from above as raw rice to be newly dried.

According to this embodiment as well, compared to the case where half-dried paddy is discharged from the dryer main body in the first round of charging and then the remaining raw paddy is charged into the dryer main body in the second round of charging, the amount of paddy in the dryer body is The time required for replacement can be cut in half to 1 hour.
Therefore, according to the method of using the circulating grain dryer according to this embodiment, the circulating grain dryer can be efficiently used even in a facility where one circulating grain dryer is installed.

In each of the above embodiments, when the dried grains are discharged from below the dryer body and at the same time, the grains to be newly dried are loaded into the dryer body from above, the plurality of height positions in the dryer body Grasp the height position of each moisture layer of the discharged grain and the charged grain by a moisture meter provided in the dryer main body, and / or based on the discharge amount of the grain discharged from the dryer main body Grain replacement status in the dryer main body is detected by grasping the remaining amount of the discharged grain in the dryer main body, appropriately detecting the completion of grain replacement in the dryer main body can be done.

Further, in each of the above-described embodiments, when the grains to be newly dried are discharged from the lower side of the dryer main body and at the same time, the grains to be newly dried are introduced into the main body of the dryer from above. At the same time as the start, a weight having approximately the same specific gravity as the grain, for example, a weight with a hoisting device, is put into the dryer body from above, and the height of the weight determines the height of the boundary between the discharged grain and the fed grain. By grasping the position, it is possible to appropriately detect the completion of grain replacement in the dryer main body by detecting the replacement state of the grain in the dryer main body.

In each of the above-described embodiments, a facility having six or one circulating grain dryers was exemplified, but the present invention is not limited to this, and the number of dryers installed can be increased or decreased as appropriate.

In each of the above embodiments, a case where raw rice is dried in one stage and a case where it is dried in two stages have been described, but raw rice can also be dried in three or more stages.
Further, in each of the above examples, the case of drying raw paddy to obtain half-dried paddy with a moisture content of about 17% has been described, but it is also possible to obtain dried paddy with a lower moisture content.

In the above embodiment, the dry processing is performed using raw rice as a raw material.
In addition, in the above example, rice was used as a raw material, but other grains such as wheat can be used as a raw material and dried.

It goes without saying that the present invention is not limited to the above-described embodiment, and its configuration can be changed as appropriate without departing from the scope of the invention.

INDUSTRIAL APPLICABILITY According to the method of using the circulation grain dryer of the present invention, the circulation grain dryer can be used efficiently, which is useful.

1 Machine Building 11 Receiving Hopper 12 Rough Sorting Machine 13 Weighing Machine 2 Drying Building 21 Circulation Grain Dryer 3 Silo Line 31 Main Silo 32 Gap Silo 41 Grain Lifting Machine 42 Grain Lifting Machine 43 Grain Lifting Machine 51 Horizontal Feeding Conveyor 52 Horizontal Feeding Conveyor 53 Horizontal conveyor 54 Horizontal conveyor 55 Horizontal conveyor 56 Horizontal conveyor

Claims (7)

A dryer body having a storage section in the upper part and a drying section in the lower part of the storage section; The grains are passed through the drying unit and discharged from the lower part of the dryer body, and the discharged grains are fried by the grain hoisting machine and returned to the upper part of the dryer body, thereby drying the grains while circulating them. A circulating grain dryer that allows
In a method of using a circulating grain dryer in a facility in which a plurality of the circulating grain dryers are installed,
When the amount of grains to be dried exceeds the total capacity of each dryer body in the plurality of circulation grain dryers, the grains to be dried are sequentially put into each dryer body and dried while being circulated. On the other hand, after the grains to be dried are put into all the dryer main bodies, the grains after drying are discharged out of the machine for tempering without being directly transferred to other circulation type grain dryers in a progressive manner. While the grains after drying are discharged from below the main bodies of the respective dryers, at the same time, the remaining grains to be dried are sequentially fed into the main bodies of the respective dryers from above as grains to be newly dried,
the grains to be dried are grains in a first moisture state,
When the amount of grain in the first moisture state exceeds the total capacity of each dryer main body in the plurality of circulating grain dryers, the grain after drying the grain in the first moisture state is dried. 2. Discharged out of the machine as grains in a moisture state,
When the amount of grain in the first moisture state does not exceed the total capacity of each dryer main body in the plurality of circulating grain dryers, the grain after drying the grain in the first moisture state is A method of using a circulating grain dryer for discharging grains in a third moisture state having a moisture content lower than that in the second moisture state to the outside of the machine.
When the amount of grain in the first moisture state exceeds the total capacity of each dryer main body in the plurality of circulating grain dryers , and all of the grain in the first moisture state is After being thrown into the main body, when the grain in the second moisture state is discharged out of the machine as the grain in the second moisture state after drying the grain in the first moisture state, the grain in the second moisture state is discharged from the main bodies of the dryers. While discharging, at the same time, the grain in the second moisture state discharged to the outside of the machine is sequentially fed into the main bodies of the dryers as the grain to be newly dried, and the grain in the second moisture state is dried. 2. A method of using a circulating grain dryer according to claim 1 , wherein the grain is discharged out of the machine as grain in the third moisture state. When there is no grain in the second moisture state to be discharged out of the machine and there is grain in the second moisture state discharged out of the machine earlier, the grain in the second moisture state is dried. When discharging the grains in the third moisture state to the outside of the machine, the grains in the third moisture state are discharged from the main bodies of the dryers, and at the same time, the remaining grains in the second moisture state are renewed. 3. The method according to claim 2 , wherein the grains to be dried in the second moisture state are successively fed into the main body of the dryer, and the remaining grains in the second moisture state are discharged out of the machine as the grains in the third moisture state after drying. How to use the circulating grain dryer. 4. The circulation type grain dryer according to any one of claims 1 to 3 , wherein when the grains in the second moisture state are discharged to the outside of the machine, each of the circulation type grain dryers is operated in a hot air drying operation to dry the grains while discharging the grains to the outside of the machine. how to use. 4. The circulation type grain dryer according to any one of claims 1 to 3, wherein when the grains in the third moisture state are discharged to the outside of the machine, each of the circulation type grain dryers is discharged to the outside of the machine while being cooled in a ventilation drying operation. how to use. When the dried grains are discharged from the bottom of the dryer body and at the same time, when the grains to be newly dried are put into the dryer body from above, moisture meters provided at a plurality of height positions in the dryer body Grasping the height position of each moisture layer of the discharged grain and the charged grain, and/or the discharged grain in the dryer main body based on the discharge amount of the grain discharged from the dryer main body 6. The method of using a circulation type grain dryer according to any one of claims 1 to 5 , wherein the state of replacement of grains in the dryer main body is detected by grasping the remaining amount of grains. While discharging the dried grains from below the main body of the dryer, at the same time, the grains to be newly dried are introduced into the main body of the dryer from above. A weight having a specific gravity is put into the main body of the dryer from above, and the height position of the boundary between the grain to be discharged and the grain to be fed is grasped according to the height position of the weight, so that the grain in the main body of the dryer can be measured. 6. The method of using the circulatory grain dryer according to any one of claims 1 to 5 , wherein the replacement situation is detected.

Images