JP3086860B2 - Temperature and humidity control device for grain silo - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for controlling temperature and humidity in a silo for storing grain.

[0002]

2. Description of the Related Art In grain silos, the temperature inside rises during storage. However, there has been no particularly established means for controlling the temperature inside silos. Tempering, that is, dispensing of grains from silos. This cycle of putting the grain into the silo brings the grain into contact with air to reduce the temperature. In most cases, no special consideration is given to humidity.

[0003]

Since the conventional silo has a diameter of about 10 m and a capacity of about 2000 t, the temperature and humidity in the silo can be maintained at appropriate levels even by the above-mentioned tempering method. it can.

By the way, a single grain silo having a large capacity and a large diameter has been considered for the purpose of long-term storage. However, since such a silo has a large storage capacity of one unit, a conventional tempering method is used. However, it is uneconomical, and the temperature and humidity cannot be sufficiently controlled.

In view of the above circumstances, it is an object of the present invention to control the temperature and humidity in a silo with a simple structure when the silo is a single grain silo with a large diameter for long-term storage of a large capacity. It is an object of the present invention to provide a grain silo temperature / humidity management device that can be appropriately performed and maintain the quality of grains in the silo.

[0006]

According to the present invention, an air chamber is provided at the center of the bottom of a large-diameter single-type grain silo for circulating gas, and a vent is provided at the upper part of the air chamber. A canvas is stretched, and the other end of the gas pipe opening at one end using the air chamber as a suction port is opened at the center of the upper part of the grain silo as an air outlet to form a gas circulation path, and in the middle of the gas pipe. A blower and a cooling / dehumidification / humidification unit for adjusting the temperature and humidity of the gas to an appropriate predetermined value are arranged side by side from the intake port,
Alternatively, in addition to this structure, the gas is air or nitrogen gas having a small oxygen content.

[0007]

According to the first aspect of the present invention, cooling, dehumidification,
In addition to adjusting the temperature of the gas, the humidifying unit can dehumidify the gas and control the humidity by humidifying the gas. If the gas is blown out from the upper outlet into the silo, this gas will pass down between the grains in the silo and flow downward, in addition to appropriately adjusting the temperature of the grain, removing and replenishing the moisture of the grain The stored grain can be controlled at the optimal temperature and humidity.

The gas reaching the bottom of the silo is sucked by a blower through a ventilation canvas and an air chamber into a gas pipe forming a circulation path having an end connected to a suction port, and is again regenerated by a cooling / dehumidifying / humidifying unit. The air is blown into the silo after being adjusted to an appropriate temperature and humidity, and this is repeated thereafter. In particular, to circulate gas,
Since the ventilation canvas and the air chamber are provided, noise can be prevented.

In circulating the gas in the silo as described above, since the outlet and the suction port are located at the center of the silo, the gas can be easily circulated in the silo at an equal ratio. Even the one that travels along the silo inner wall of the furthest trajectory can be circulated evenly left, right, front and back. That is, the same amount of gas simultaneously blown out from the outlet at the same strength travels symmetrically on the inner wall of the silo right and left, and just hits the inlet at the center of the bottom of the silo. Therefore, the gas can be smoothly recovered from the suction port,
Gas can be recovered in a balanced manner from top to bottom of the grains in the silo.

In addition to this, since the silo has a large diameter and is of a single type, the temperature of the grain in the silo can be controlled by using gas as a medium.
Since the humidity can be easily controlled, and the temperature and humidity of the gas itself can be adjusted and circulated with a single facility, the gas circulation operation and the maintenance and management of the gas temperature and humidity can be easily performed.

According to the second aspect of the present invention, in addition to the above operation, since the gas is air or air with a small oxygen content or nitrogen gas, the temperature and humidity of the grain in the silo where the temperature tends to rise are increased. Management can be performed properly.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of a temperature / humidity management apparatus for a grain silo according to the present invention. In the figure, reference numeral 1 denotes a large-diameter single-type grain silo formed in a cylindrical shape. An air chamber 2 is provided below.

The upper portion of the air chamber 2 serves as a gas inlet 3 opening to the bottom of the grain silo 1, and a ventilation canvas 4 is stretched over the inlet 3.

A gas outlet 5 is formed in the upper part of the grain silo 1, and the inlet 3 and the outlet 5 are connected by a gas pipe 6. The blower 7 and the cooling / dehumidifying / humidifying unit 8 are arranged side by side. As the cooling / dehumidifying / humidifying unit 8, for example, a cooler provided with a humidifying function is used.

As described above, a closed gas circulation path is formed by the grain silo 1 and the gas pipe 6. The type of gas to be circulated is, for example, either air or air with low oxygen content or nitrogen gas.

Next, the operation will be described. The gas in the grain silo is sucked into the air chamber 2 from the suction port 3 through the ventilation canvas 4 by the suction force of the blower 7 and flows into the cooling / dehumidification / humidification unit 8 through the gas pipe 6, where the gas Temperature and humidity are adjusted to appropriate predetermined values.

The gas adjusted to a predetermined value is blown out from the upper outlet 5 into the grain silo 1, passes between the grains 9 inside, and flows downward. During this time, the gas takes the temperature from the grain 9 to lower the grain temperature, and at the same time, supplies moisture to the grain 9 to maintain the grain moisture at a predetermined value.

The gas that has passed between the grains 9 as described above is again sucked into the gas pipe 6 from the lower suction port 3 and is cooled by the cooling / dehumidification / humidification unit 8 into a gas having an appropriate temperature and humidity. It is adjusted and discharged again from the upper outlet 5 into the grain silo 1, and this is repeated to repeat the grain silo 1
It manages the temperature and humidity inside.

In this case, since either gas or air having a small amount of oxygen or nitrogen gas is used as the gas, the temperature and humidity of the grain in the silo where the temperature tends to rise can be appropriately controlled.

[0020]

As described above, the temperature and humidity control apparatus for grain silos according to the present invention has a simple structure when the silos are made into large-diameter, single-type grain silos for large-capacity long-term storage. Can properly manage the temperature and humidity inside the silo,
The quality of the grain in the silo can be maintained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of a grain silo temperature / humidity management device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Grain silo 2 ... Air chamber 3 ... Suction port 4 ... Ventilation canvas 5 ... Outlet 6 ... Gas piping 7 ... Blower 8 ... Cooling / dehumidification / humidification unit 9 ... Grain

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masamichi Yasunaga 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Yoshiyuki Oguma 1-3-8 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. Tokyo Branch (72) Inventor Koichiro Kanai 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Yasufumi Iseki 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (56) References JP-A-61-88817 (JP, A) JP-A-54-109621 (JP, A) JP-A-58-149615 (JP, A) JP-A-2-272232 ( JP, A) JP-A-4-278046 (JP, A) JP-A-4-27329 (JP, U) JP-A-2-85935 (JP, U) JP-A-3-103983 (JP, U) 56-32891 (JP, B2) 1295 (JP, B2)

Claims (2)

(57) [Claims] An air chamber is provided at the center of the bottom of a large-diameter single-type grain silo for circulating gas, a ventilation canvas is stretched over the air chamber, and one end is formed using the air chamber as a suction port. The other end of the gas pipe is opened as an outlet at the center of the upper part of the grain silo to form a gas circulation path, and a blower and a gas temperature and humidity are arranged in the gas pipe in order from the intake port. A temperature / humidity control device for grain silos, wherein cooling, dehumidifying, and humidifying units that adjust the temperature to an appropriate predetermined value are arranged side by side. 2. The temperature / humidity control apparatus for a grain silo according to claim 1, wherein the gas is air or air or nitrogen gas having a small amount of oxygen.