JP2592518Y2 - Drying facility using solar heat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a solar heat drying system capable of drying a large amount of cereals to finish moisture without using any auxiliary heat source even in unseasonable weather due to an effective endothermic effect of solar heat. About facilities.

[0002]

2. Description of the Related Art Conventionally, a plurality of silos for temporarily storing grains having a predetermined moisture content or less are arranged in two rows at predetermined intervals, and raw grains are stored in parallel between the silos on one side. A storage tank is provided, and on the other side, a machine room such as a huller for hulling grains,
A grain dryer for drying the grains, a product grain storage area, and the like are provided. A loading device, an operation room, an office, and the like are provided on one side of both ends of the silo. Of the sedimentation chamber, a drying furnace that generates hot air, a drying fan that sends hot air to the dryer, and a storage fan that sends air to the storage tank. After drying, and then predrying is completed, a country elevator in which the grain is finished by a hot air obtained from a drying furnace and then dried by hot air obtained by a drying furnace is described in, for example, JP-A-5-7424. It is known.

[0003]

By the way, in the conventional country elevator of this type, the grain is dried to the finish moisture by obtaining hot air at a predetermined temperature using a drying furnace. For this reason, the fuel consumption for drying a large amount of grains may become enormous, and the maintenance and maintenance of the fuel cells may be troublesome. There is a problem that labor costs increase because of the necessity.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to obtain a raw grain having a high moisture content by the endothermic action of solar energy. Pre-dried grains are slowly and evenly pre-dried by the suction ventilation action of the heated air and the stirring and transfer action, and then the pre-dried grains are put into a ventilation bottle that can be switched between pumping and suction, and only during the daytime through solar heat absorption. It is an object of the present invention to provide a drying facility utilizing solar heat, which can finish and dry to a predetermined moisture without difficulty while saving fuel consumption by suction ventilation of the obtained heated air.

[0005]

In order to achieve the above-mentioned object, a drying facility utilizing solar heat according to the present invention enables a stirring transfer machine to reciprocate in a solar drying building formed around a solar heat absorbing wall. A solar-powered agitated and air-drying device that is equipped with a horizontal drying cabinet that has a ventilation chamber with a suction exhaust fan at the bottom, and is installed outdoors, and heat is absorbed entirely. Formed into a cylindrical shape rich in properties,
A ventilation chamber provided on the bottom side is connected to a ventilation device through a ventilation channel, and a solar heat type with a switching device in the ventilation channel that can adjust the direction of ventilation of the ventilation device to the pressure feeding direction or suction direction And the discharge side of the drying cabinet and the input side of the ventilation bin are connected via a transfer device.

[0006]

In FIG. 1, when it is desired to finish and dry a harvested grain having a high moisture content to a predetermined moisture level, for example, about 15%, by means of a drying facility utilizing solar heat, a horizontally long grain is first installed in a solar drying building. After being charged into the drying cabinet so as to be substantially flat, the suction air blower and the stirring transfer machine are operated. Then, the grains introduced into the drying cabinet are transferred while being sequentially stirred from the supply side to the discharge side by the reciprocating action of the stirring transfer machine.

[0007] By the way, in the daytime, since a solar drying building in which a horizontally long drying cabinet is installed is formed by a solar heat absorbing wall, the internal temperature of the solar drying building is controlled by the effective use of the transmitted and absorbed solar heat. If it is allowed to be heated and become heated air, the heated air is sucked and circulated through the drying cabinet toward the exhaust chamber by the suction action of the suction and exhaust fan, and is evenly poured on the grains being stirred and transferred, and dried. After that, while being discharged from the discharge side, the exhausted wind after being subjected to drying is exhausted from the exhaust air chamber through a suction exhaust fan and concentrated outside the solar thermal drying building.

[0008] Therefore, as described above, when the pre-drying is slowly performed to about 19% of water by the agitated ventilation drying apparatus of the solar heat type, the dried grains are put into a plurality of ventilation bins via the transfer device, and the switching device is operated. When activated, the ventilation direction of the ventilation device is switched and adjusted so as to be the suction direction.

In this case, since the entire ventilation bin is also formed in a cylindrical shape having a high heat absorbing property, the internal temperature of the ventilation bin is increased by the heat absorbing action of solar heat, so that the internal air is also heated air. The heated air is sucked and circulated through the sedimentary cereal from the upper side to the lower side by the suction action of the ventilation device, so that the heated air is gradually dried.

[0010] Therefore, if the above-mentioned suction circulation operation is carried out only temporarily during the daytime, the pre-dried cereal gradually dries and is dried to a final moisture content, for example, about 15%. In addition, when the outside air temperature is high in the daytime, the ventilation direction of the ventilation device is switched to the pumping direction by the switching operation of the switching device, and the high-temperature air is blown upward from the lower side to the preliminary dried grain, and the grain is slowly cooled. And let it dry.

[0011]

An embodiment will be described with reference to the drawings. In FIG. 1 to FIG. 4, numeral 1 indicates that the received raw cereal having a high moisture content is pre-dried to approximately 19% by the suction and circulation of heated air obtained by the endothermic effect of solar heat, and the pre-dried cereal is dried. The heated water obtained by the endothermic effect of solar heat is further pumped and sucked and circulated to finish water of approximately 15%.
%. The solar heat drying facility 1 is capable of drying to about% by weight. The solar heat drying facility 1 is a solar-heat-type agitation ventilation drying apparatus 2 for pre-drying received cereal with a large amount of water and finish-drying. Multiple ventilation bins 3
.. And the transport device 4. And
The agitated ventilation drying device 2 of the solar heat type is configured by installing a horizontally long drying casing 7 in a single or plural rows inside a solar drying building 5 formed by a solar heat transmitting / absorbing wall 6 around the periphery. The drying cabinet 7 has a horizontally long shape with an upper surface of about 20 m to 35 m opened, and a horizontal ventilation plate 8 having a large number of ventilation holes 9 laid on the surface at an appropriate internal height position. As a boundary, a drying chamber 10 is formed in the upper part and a plurality of exhaust chambers 11 are formed in the lower part.
1 are connected to the inside and provided with suction blowers 12 whose discharge side is viewed outside the solar drying building 5. Further, on the drying cabinet 7, a stirring and transferring machine 13 for transferring the grains contained in the drying chamber 10 while stirring from the supply side a toward the discharge side b is mounted so as to be able to reciprocate.

The ventilation bin 3 for finishing and drying the pre-dried grain is configured as follows. That is, it is installed outdoors, and is entirely formed in a cylindrical shape having a high heat absorbing property, and a porous ventilation floor 15 is horizontally laid on the bottom side through a ventilation chamber 14, and is disposed above the ventilation floor 15. The horizontal axis discharge auger 16 which revolves while rotating on the upper surface of the ventilation floor 15 is provided horizontally, and the dried grains in the drying chamber 17 are conveyed to the discharge port 18 opened at the center position of the ventilation floor 15, and Below the horizontal discharge auger 16, a conveyor-type transfer belt 19 for rotatably suspending the dried grains transferred to the discharge port 18 by the horizontal discharge auger 16 and transporting the dried grains to the outside of the ventilation bin 3 is provided. Have been. In the drying chamber 17, a horizontal shaft 21 revolves along an annular guide rail 20 provided on the inner peripheral surface of the side wall of the ventilation bin 3, the other end of which has a base end as an axis of revolving rotation. A stirrer / mixer 23 comprising a plurality of vertical augers 22 which rotates while reciprocating between a center portion and a side wall along a horizontal axis 21 is provided. A ventilation device 25 including a blower or the like is provided on one side of the ventilation chamber 14 via a ventilation passage 24, and an intake passage 26 is connected to an intake side of the ventilation device 25. An intake window 27 and an exhaust window 28 are opened in the middle of the air guide passage 24. The intake window 27 and the exhaust window 28 are provided with a switching device 29 which is pivoted so as to be able to slide in conjunction with each other. When the switch is closed by switching operation,
The ventilation direction of the ventilation device 25 is in the pressure feeding direction.
7 and the exhaust window 28 are closed by the switching operation of the switching device 29, and when the air guide path 24 and the intake window 26 are connected, the ventilation direction of the ventilation device 25 is changed to the suction direction. It is configured. A grain filling device 30 is provided at the center of the top of the ventilation bin 3 described above, and a plurality of intake / exhaust ducts 31 are provided on the ceiling of the ventilation bin 3 in a downward direction.

The discharge side b of the drying cabinet 7 installed in the solar thermal drying building 5 and the grain filling device 30 of the ventilation bin 3 are connected by the transporting device 4, and the solar thermal agitation ventilation drying device 2 is used. Cereal preliminarily dried by the ventilation bin 3
And dried to finish moisture.

[0014]

Since the present invention is configured as described above, the following effects are obtained. (A) As in the case of solar drying, preliminary drying and finish drying can be performed with heated air obtained by solar thermal energy, so that drying in a completely natural environment can be performed without difficulty. (B) Grains such as soybeans and buckwheat, as well as wheat other than paddy, can be easily dried or made into a glossy high-grade product by a cleaning effect by stirring. (C) Since all drying is performed by a suction ventilation system, there is no scattering of dust, and the drying operation can be achieved under sanitary environmental conditions. (D) Since it is a drying device using solar heat, it is not only necessary to remarkably save fuel consumption, but also it is not necessary to work late at night or early morning including monitoring. (E) Since the capacity of the solar heat utilizing agitated ventilation drying apparatus is large, and the ventilation bottle is additionally provided, it is possible to cope with receiving a large amount of cargo. (F) Since it can be pre-dried and finished dried in a ventilation bottle,
Large cereals can be completely processed in a small drying facility. (G) Since the ventilation bin is of a pressure-feeding / suction switching type, it can be dried during the day by effectively utilizing solar heat by suction ventilation. (H) Since night work is not required and there is no need for a substitute, labor costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a drying facility using solar heat, with a part cut away.

FIG. 2 is a vertical cross-sectional side view of a stirring-air drying device of a solar heat type.

FIG. 3 is a vertical sectional front view of a drying case with a part cut away.

FIG. 4 is a vertical sectional side view of a ventilation bin partially cut away.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drying facility using solar heat 2 Stirred ventilation drying apparatus of the solar heat type 3 Ventilation bin 4 Conveying device 5 Solar heat drying building 6 Solar heat absorption wall 7 Drying cabinet 11 Exhaust chamber 12 Suction exhauster 13 Stirring transfer machine 14 Ventilation chamber 24 Guide Air passage 25 Ventilation device 29 Switching device b Discharge side of drying cabinet

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F26B 23/00 F26B 25/00-25/04 F26B 21/00 F26B 9/06

Claims (1)

(57) [Scope of request for utility model registration] 1. A stirring transfer machine is mounted in a solar drying building having a perimeter formed of a solar heat absorbing wall so as to be able to reciprocate,
A solar-heat-type agitated ventilation drying device constructed by arranging a horizontally long drying cabinet that defines a ventilation chamber with a suction ventilation device on the lower side, and installed outdoors, and the whole is rich in heat absorption The ventilation chamber formed on the bottom side is connected to the ventilation device through the ventilation channel, and the ventilation direction of the ventilation device can be changed to the pressure feeding direction or the suction direction during the ventilation channel. A drying facility utilizing solar heat, comprising a solar-heat-utilizing ventilation bin provided with a device, and a discharge side of the drying casing and an inlet of the ventilation bin connected via a transfer device.