JP6446921B2 - Grain storage silo and raw grain quality maintenance method in country elevator - Google Patents

Description

  The present invention relates to a grain storage silo in a country elevator and a method for maintaining the quality of raw grains in a country elevator.

Conventionally, country elevators are well known (see, for example, Patent Document 1).
In the country elevator described in Patent Document 1, harvested cereal is put into a receiving hopper, impurities are sorted and removed by a coarse sorter and weighed by a receiving weigher, and then stored in a storage bin by a grain carrying conveyor. It is thrown into.

  The grains put in the storage bin are stored in the storage bin until the grain harvested on that day is transferred to the dryer while being blown from the bottom to the top by the blower. Is done.

  According to the country elevator described in Patent Document 1, by storing the received grain in the storage bin, the quality of the grain can be ensured until the grain is transferred to the dryer. .

However, the storage bin temporarily stores the received grain, and many small bottles are generally installed in order to cope with fluctuations in the received amount.
Therefore, the country elevator described in Patent Document 1 has a problem of requiring a wide installation space for installing the storage bin.

JP 2005-6590 A

Then, this invention uses the existing installation as an installation replaced with a storage bin, Comprising: It aims at providing the grain storage silo of a country elevator which can store a raw grain and can maintain quality. .
Another object of the present invention is to provide a method for maintaining the quality of raw grains in a country elevator, in which raw grains are stored in the gap silos of the grain storage silo to maintain the quality.

In order to achieve the above object, the present invention provides:
A grain storage silo in a country elevator,
In a grain storage silo in which a gap silo is provided in a space surrounded by a plurality of main silos,
A decompression means is connected to the gap silo, the gap silo can be decompressed ,
A silo wall having an air layer is formed outside the plurality of silos, and the air in the air layer whose temperature has been lowered by radiation cooling can be sucked into the gap silo .

  In the present invention, it is preferable that the main silo has a cylindrical side wall, and the gap silo has a side wall that is curved inward along the side wall of the main silo.

In order to achieve the above object, the present invention provides:
A method for maintaining the quality of raw grains in a country elevator,
In a method for maintaining the quality of raw grains using a grain storage silo in which a gap silo is provided in a space surrounded by a plurality of main silos,
A pressure reducing means is connected to the gap silo,
The raw grain is stored in the gap silo, and the gap silo is decompressed by the decompression means to reduce the grain temperature of the raw grain and maintain the quality of the raw grain.

The present invention is made is silo wall formed with an air layer on the outer side of the plurality of the silos, you intake air of the air layer temperature decreases by radiation cooling to the gap silo.

  In the present invention, while maintaining the quality of the raw grain, the gap silo is decompressed, and after maintaining the decompressed state for a certain period of time, the gap silo is returned to atmospheric pressure for ventilation, and the gap silo is decompressed again. It is preferable to repeat.

  The grain storage silo in the country elevator according to the present invention is formed by connecting a decompression means to a gap silo, so that the grain temperature of the raw grain stored in the gap silo is reduced by decompressing the gap silo by the decompression means. The quality of the raw grain can be maintained.

  Moreover, since the quality of the received raw grain can be maintained using the grain storage silo which is an existing facility, the present invention does not require a large installation space as in the case of using a storage bin.

  In the grain storage silo in the country elevator according to the present invention, if the main silo has a cylindrical side wall, and the gap silo has a side wall curved inward along the side wall of the main silo, the gap The silo is strong enough to withstand decompression.

Grain storage silos in grain elevator of the present invention, the intake will be silo wall formed with an air layer on the outer side of the plurality of the silo, the air of the air layer temperature decreases by radiation cooling in the gap silo By making it possible, the grain temperature of the raw grain can be lowered, so that the quality maintenance function can be strengthened at low cost, and by sucking outside air into the gap silo, before drying, etc. In addition, the grain temperature of the raw grain can be increased.

  In addition, according to the raw grain quality maintenance method in the country elevator of the present invention, the grain storage silo having a gap silo provided in a space surrounded by a plurality of present silos, which is an existing facility, Since the quality is maintained, a large installation space is not required as in the case of using a storage bin.

In the method for maintaining the quality of raw grains in the country elevator according to the present invention, a silo wall having an air layer is formed outside the plurality of main silos, and air in the air layer whose temperature has been lowered by radiant cooling is used as the gap silo. By sucking in , the grain temperature of the raw grain can be lowered, so that the quality maintaining function can be enhanced at low cost.

  In the method for maintaining the quality of raw grain in the country elevator according to the present invention, while maintaining the quality of the raw grain, the gap silo is depressurized, and after maintaining the reduced pressure state for a certain time, the gap silo is returned to atmospheric pressure. If ventilation is performed and the decompression of the gap silo is repeated, the quality of the raw grain can be appropriately controlled.

  Further, in the method for maintaining the quality of raw grain in the country elevator according to the present invention, if the gap silo is returned to atmospheric pressure before discharging the raw grain from the gap silo, the raw grain bridge at the time of discharge Can be prevented.

The plane schematic diagram of the country elevator in the embodiment of the present invention. The schematic plan view of the grain storage silo in the country elevator of FIG. AA sectional drawing of FIG.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic plan view of a country elevator according to an embodiment of the present invention.
In the embodiment of the present invention, in the building 1, a load receiving hopper 2, a coarse selection device 3, and a grain raising machine 4 that connects the load receiving hopper 2 and the coarse selection device 3 are disposed. Further, in the building 1, a dryer 5 is disposed adjacent to the coarse selection device 3, and further a hulling / selection device 6 is disposed.

In the embodiment of the present invention, a silo group of grain storage silos 15 is installed on one side of the building 1.
The grain storage silo 15 has six main silos 7A to 7F and two gap silos 8A and 8B provided in a space surrounded by the six main silos 7A to 7F.

  On the upper part of the grain storage silo 15, a loading conveyor (not shown) connected to the loading ports of the main silos 7A to 7F and the gap silos 8A and 8B is provided, and the building 1 and the grain storage silo 15 In the middle, the silo cerealing machine 10 connected to the starting end side of the loading conveyor is disposed.

  Further, in the skirt portion below the grain storage silo 15, take-out conveyors (not shown) connected to the discharge ports of the main silos 7A to 7F and the gap silos 8A and 8B are arranged.

  The take-out conveyor is connected to a cerealing machine 13 in the building 1, and the cerealing machine 13 is connected to the silo cerealing machine 10 and the dryer 5 by branching the upper discharge side. Yes.

FIG. 2 is an explanatory view of a grain storage silo in the country elevator of FIG. 1 and shows a schematic plan view. Here, a state in which the present silo 7D is omitted is shown. FIG. 3 is a cross-sectional view taken along the line AA in FIG.
In the grain storage silo 15 according to the embodiment of the present invention, the present silos 7A to 7F have a cylindrical side wall 18 formed of a steel plate. The gap silos 8A and 8B are formed of a steel plate and have side walls 19 that are curved inward along the cylindrical side walls 18 of the present silos 7A to 7F.

  The grain storage silo 15 is composed of the adjacent silos 7A to 7F connected to each other by the connecting steel plate 20 and integrally assembled together with the gap silos 8A and 8B.

  Further, on the outside of the silo group, that is, on the outside of the side walls 18 and the connecting plate 20 of the present silos 7A to 7F, a heat insulating material 21 such as urethane foam or glass wool is provided as shown in an enlarged view of B part in FIG. Thus, the iron plate 24 is covered through the space serving as the air layer 22 and a silo wall 23 is formed.

  A vacuum pump 25 is disposed in the skirt portion 11 of the silo group, and the vacuum pump 25 is connected to the lower portion of one of the gap silos 8A by a suction pipe 28 through a filter 26 and an intake valve 27. Has been. The vacuum pump 25 communicates with the outside through an exhaust valve 29 through an exhaust pipe 30.

On the other hand, an intake pipe 31 communicating with the upper part of the air layer 22 formed on the silo wall 23 is disposed above the silo group, and the intake pipe 31 is connected via an intake valve 32. One gap silo 8A is connected to the upper part. A branch pipe 33 communicating with the outside air is connected to the intake pipe 31 via an intake valve 34.
The other gap silo 8B is similarly provided with a configuration such as a vacuum pump 25 and an intake pipe, but the illustration is omitted here.

Next, a method for maintaining the quality of raw grains in the country elevator according to the embodiment of the present invention will be described.
In the country elevator according to the embodiment of the present invention, raw grains such as ginger received by the load receiving hopper 2 are coarsely selected and weighed by the coarse selection device 3, and then passed through the silo cereal mill 10 and the input conveyor. It is introduced into the gap silos 8A and 8B from the inlet 9 and stored.

  The raw grains stored in the gap silos 8A and 8B are reduced in pressure by the vacuum pump 25 by the gap silos 8A and 8B, and the quality is maintained.

  The raw grain is stored in the gap silos 8A and 8B in a state where the quality is maintained until the dryer 5 becomes empty, and then discharged from the discharge port 12, and the take-out conveyor and the cereal It is transferred to the dryer 5 via the machine 13.

Here, it is preferable to repeat the following steps (1) to (4) while maintaining the quality of the raw grain.
(1) The gap silos 8A and 8B are sucked by the vacuum pump 25 to be in a reduced pressure state of about 0.02 to 0.03 MPa (2000 to 3000 mmAq). The pressure reduction state of the gap silos 8A and 8B is maintained while starting and stopping the vacuum pump 25 within the range of the set values of the pressure gauges installed in the gap silos 8A and 8B.

(2) After maintaining the pressure-reduced state of the gap silos 8A and 8B for a certain time, the intake valve 32 is opened to return to atmospheric pressure.
(3) The vacuum pump 25 is operated for several minutes with the intake valve 30 opened, and the gap silos 8A and 8B are ventilated.

(4) The intake valve 30 is closed and the vacuum pump 25 is activated to bring it into the state (1).
By repeating the steps (1) to (4) while maintaining the quality of the raw grain, the quality of the raw grain stored in the gap silos 8A and 8B can be appropriately managed.

  If the intake valve 32 is opened and the gap silos 8A and 8B are returned to the atmospheric pressure before the raw grains are discharged from the gap silos 8A and 8B, the bridge of the raw grains at the time of discharge is used. Can be prevented.

  The gap silos 8A and 8B can take air from the intake pipe 31 by appropriately switching the air in the air layer 22 and the outside air in the silo wall 23.

  For example, if the air in the air layer 22 whose temperature has been lowered by radiative cooling is sucked into the gap silos 8A and 8B, the grain temperature of the raw grain can be lowered, so that quality is maintained at low cost. Function can be strengthened. Further, if the outside air is sucked into the gap silos 8A and 8B, the grain temperature of the raw grain can be increased before drying.

  In the embodiment of the present invention, the grain storage silo 15 is formed by connecting a vacuum pump 25 to the gap silos 8A and 8B, so that the gap silos 8A and 8B are decompressed by the vacuum pump 25, thereby The grain temperature of the raw grain stored in the silos 8A and 8B can be lowered, and the quality of the raw grain can be maintained.

  In the embodiment of the present invention, the country elevator uses the grain storage silo 15 as an existing facility to store the raw grain until the received raw grain is transferred to the dryer. Since it can hold | maintain, a large installation space is not required like the case where a storage bin is utilized.

  Furthermore, in the embodiment of the present invention, in the grain storage silo 15, the present silos 7A-7F have cylindrical side walls 18, and the gap silos 8A, 8B extend along the side walls of the present silos 7A-7F. Since the side wall 19 is curved inward, the gap silos 8A and 8B to which the decompression means is connected have a strong structure capable of withstanding the decompression.

  In the embodiment of the present invention, the moisture in the raw grain stored in the gap silos 8A and 8B moves to the surface side of the raw grain due to the reduced pressure, so that the drying efficiency in the dryer 5 is expected to be improved. it can.

  The present invention is not limited to the above-described embodiment, and it goes without saying that the configuration can be appropriately changed without departing from the scope of the invention.

  INDUSTRIAL APPLICABILITY The present invention is extremely useful because the quality of raw grain can be maintained by using a grain storage silo of a country elevator that is an existing facility.

DESCRIPTION OF SYMBOLS 1 Building 2 Load receiving hopper 3 Coarse-selection device 4 Graining machine 5 Drying machine 6 Rice hulling and fine-selection device 7A-7F This silo 8A, 8B Gap silo 9 Input port 10 Silo graining machine 11 Skirt part 12 Outlet port 13 Graining Machine 15 Grain storage silo 18 Side wall (this silo)
19 Side wall (gap silo)
20 connecting steel plate 21 heat insulating material 22 air layer 23 silo wall 24 iron plate 25 vacuum pump 26 filter 27 intake valve 28 intake pipe 29 exhaust valve 30 exhaust pipe 31 intake pipe 32 intake valve 33 branch pipe 34 intake valve

Claims (4)

A grain storage silo in a country elevator,
In a grain storage silo in which a gap silo is provided in a space surrounded by a plurality of main silos,
A decompression means is connected to the gap silo, the gap silo can be decompressed ,
In the country elevator , a silo wall having an air layer is formed on the outside of the plurality of silos, and air in the air layer whose temperature has been lowered by radiation cooling can be sucked into the gap silo . Grain storage silo.   The grain storage silo in a country elevator according to claim 1, wherein the silo has a cylindrical side wall, and the gap silo has a side wall that is curved inward along the side wall of the main silo. A method for maintaining the quality of raw grains in a country elevator,
In a method for maintaining the quality of raw grains using a grain storage silo in which a gap silo is provided in a space surrounded by a plurality of main silos,
A pressure reducing means is connected to the gap silo,
The raw grain is stored in the gap silo, the grain temperature of the raw grain is reduced by reducing the gap silo by the decompression means, and the quality of the raw grain is maintained .
A silo wall having an air layer is formed on the outside of the plurality of silos, and the temperature of the raw grain is lowered by sucking the air in the air layer whose temperature has been lowered by radiation cooling into the gap silo. And maintaining the quality of the raw grain, the method for maintaining the quality of raw grain in a country elevator. While maintaining the quality of the raw grain, the gap silo is decompressed, and after maintaining the decompressed state for a certain period of time, the gap silo is returned to atmospheric pressure for ventilation, and the gap silo is decompressed again. The quality maintenance method of the raw grain in the country elevator of Claim 3 .

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